1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4  * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/queue.h>
20 #include <sys/time.h>
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <sys/wait.h>
24 
25 #include <err.h>
26 #include <errno.h>
27 #include <fcntl.h>
28 #include <limits.h>
29 #include <locale.h>
30 #include <ctype.h>
31 #include <sha1.h>
32 #include <signal.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37 #include <libgen.h>
38 #include <time.h>
39 #include <paths.h>
40 #include <regex.h>
41 #include <getopt.h>
42 #include <util.h>
43 
44 #include "got_version.h"
45 #include "got_error.h"
46 #include "got_object.h"
47 #include "got_reference.h"
48 #include "got_repository.h"
49 #include "got_path.h"
50 #include "got_cancel.h"
51 #include "got_worktree.h"
52 #include "got_diff.h"
53 #include "got_commit_graph.h"
54 #include "got_fetch.h"
55 #include "got_send.h"
56 #include "got_blame.h"
57 #include "got_privsep.h"
58 #include "got_opentemp.h"
59 #include "got_gotconfig.h"
60 #include "got_dial.h"
61 #include "got_patch.h"
62 #include "got_sigs.h"
63 #include "got_date.h"
64 
65 #ifndef nitems
66 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
67 #endif
68 
69 static volatile sig_atomic_t sigint_received;
70 static volatile sig_atomic_t sigpipe_received;
71 
72 static void
73 catch_sigint(int signo)
74 {
75 	sigint_received = 1;
76 }
77 
78 static void
79 catch_sigpipe(int signo)
80 {
81 	sigpipe_received = 1;
82 }
83 
84 
85 struct got_cmd {
86 	const char	*cmd_name;
87 	const struct got_error *(*cmd_main)(int, char *[]);
88 	void		(*cmd_usage)(void);
89 	const char	*cmd_alias;
90 };
91 
92 __dead static void	usage(int, int);
93 __dead static void	usage_import(void);
94 __dead static void	usage_clone(void);
95 __dead static void	usage_fetch(void);
96 __dead static void	usage_checkout(void);
97 __dead static void	usage_update(void);
98 __dead static void	usage_log(void);
99 __dead static void	usage_diff(void);
100 __dead static void	usage_blame(void);
101 __dead static void	usage_tree(void);
102 __dead static void	usage_status(void);
103 __dead static void	usage_ref(void);
104 __dead static void	usage_branch(void);
105 __dead static void	usage_tag(void);
106 __dead static void	usage_add(void);
107 __dead static void	usage_remove(void);
108 __dead static void	usage_patch(void);
109 __dead static void	usage_revert(void);
110 __dead static void	usage_commit(void);
111 __dead static void	usage_send(void);
112 __dead static void	usage_cherrypick(void);
113 __dead static void	usage_backout(void);
114 __dead static void	usage_rebase(void);
115 __dead static void	usage_histedit(void);
116 __dead static void	usage_integrate(void);
117 __dead static void	usage_merge(void);
118 __dead static void	usage_stage(void);
119 __dead static void	usage_unstage(void);
120 __dead static void	usage_cat(void);
121 __dead static void	usage_info(void);
122 
123 static const struct got_error*		cmd_import(int, char *[]);
124 static const struct got_error*		cmd_clone(int, char *[]);
125 static const struct got_error*		cmd_fetch(int, char *[]);
126 static const struct got_error*		cmd_checkout(int, char *[]);
127 static const struct got_error*		cmd_update(int, char *[]);
128 static const struct got_error*		cmd_log(int, char *[]);
129 static const struct got_error*		cmd_diff(int, char *[]);
130 static const struct got_error*		cmd_blame(int, char *[]);
131 static const struct got_error*		cmd_tree(int, char *[]);
132 static const struct got_error*		cmd_status(int, char *[]);
133 static const struct got_error*		cmd_ref(int, char *[]);
134 static const struct got_error*		cmd_branch(int, char *[]);
135 static const struct got_error*		cmd_tag(int, char *[]);
136 static const struct got_error*		cmd_add(int, char *[]);
137 static const struct got_error*		cmd_remove(int, char *[]);
138 static const struct got_error*		cmd_patch(int, char *[]);
139 static const struct got_error*		cmd_revert(int, char *[]);
140 static const struct got_error*		cmd_commit(int, char *[]);
141 static const struct got_error*		cmd_send(int, char *[]);
142 static const struct got_error*		cmd_cherrypick(int, char *[]);
143 static const struct got_error*		cmd_backout(int, char *[]);
144 static const struct got_error*		cmd_rebase(int, char *[]);
145 static const struct got_error*		cmd_histedit(int, char *[]);
146 static const struct got_error*		cmd_integrate(int, char *[]);
147 static const struct got_error*		cmd_merge(int, char *[]);
148 static const struct got_error*		cmd_stage(int, char *[]);
149 static const struct got_error*		cmd_unstage(int, char *[]);
150 static const struct got_error*		cmd_cat(int, char *[]);
151 static const struct got_error*		cmd_info(int, char *[]);
152 
153 static const struct got_cmd got_commands[] = {
154 	{ "import",	cmd_import,	usage_import,	"im" },
155 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
156 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
157 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
158 	{ "update",	cmd_update,	usage_update,	"up" },
159 	{ "log",	cmd_log,	usage_log,	"" },
160 	{ "diff",	cmd_diff,	usage_diff,	"di" },
161 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
162 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
163 	{ "status",	cmd_status,	usage_status,	"st" },
164 	{ "ref",	cmd_ref,	usage_ref,	"" },
165 	{ "branch",	cmd_branch,	usage_branch,	"br" },
166 	{ "tag",	cmd_tag,	usage_tag,	"" },
167 	{ "add",	cmd_add,	usage_add,	"" },
168 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
169 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
170 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
171 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
172 	{ "send",	cmd_send,	usage_send,	"se" },
173 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
174 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
175 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
176 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
177 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
178 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
179 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
180 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
181 	{ "cat",	cmd_cat,	usage_cat,	"" },
182 	{ "info",	cmd_info,	usage_info,	"" },
183 };
184 
185 static void
186 list_commands(FILE *fp)
187 {
188 	size_t i;
189 
190 	fprintf(fp, "commands:");
191 	for (i = 0; i < nitems(got_commands); i++) {
192 		const struct got_cmd *cmd = &got_commands[i];
193 		fprintf(fp, " %s", cmd->cmd_name);
194 	}
195 	fputc('\n', fp);
196 }
197 
198 __dead static void
199 option_conflict(char a, char b)
200 {
201 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
202 }
203 
204 int
205 main(int argc, char *argv[])
206 {
207 	const struct got_cmd *cmd;
208 	size_t i;
209 	int ch;
210 	int hflag = 0, Vflag = 0;
211 	static const struct option longopts[] = {
212 	    { "version", no_argument, NULL, 'V' },
213 	    { NULL, 0, NULL, 0 }
214 	};
215 
216 	setlocale(LC_CTYPE, "");
217 
218 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
219 		switch (ch) {
220 		case 'h':
221 			hflag = 1;
222 			break;
223 		case 'V':
224 			Vflag = 1;
225 			break;
226 		default:
227 			usage(hflag, 1);
228 			/* NOTREACHED */
229 		}
230 	}
231 
232 	argc -= optind;
233 	argv += optind;
234 	optind = 1;
235 	optreset = 1;
236 
237 	if (Vflag) {
238 		got_version_print_str();
239 		return 0;
240 	}
241 
242 	if (argc <= 0)
243 		usage(hflag, hflag ? 0 : 1);
244 
245 	signal(SIGINT, catch_sigint);
246 	signal(SIGPIPE, catch_sigpipe);
247 
248 	for (i = 0; i < nitems(got_commands); i++) {
249 		const struct got_error *error;
250 
251 		cmd = &got_commands[i];
252 
253 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
254 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
255 			continue;
256 
257 		if (hflag)
258 			cmd->cmd_usage();
259 
260 		error = cmd->cmd_main(argc, argv);
261 		if (error && error->code != GOT_ERR_CANCELLED &&
262 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
263 		    !(sigpipe_received &&
264 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
265 		    !(sigint_received &&
266 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
267 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
268 			return 1;
269 		}
270 
271 		return 0;
272 	}
273 
274 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
275 	list_commands(stderr);
276 	return 1;
277 }
278 
279 __dead static void
280 usage(int hflag, int status)
281 {
282 	FILE *fp = (status == 0) ? stdout : stderr;
283 
284 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
285 	    getprogname());
286 	if (hflag)
287 		list_commands(fp);
288 	exit(status);
289 }
290 
291 static const struct got_error *
292 get_editor(char **abspath)
293 {
294 	const struct got_error *err = NULL;
295 	const char *editor;
296 
297 	*abspath = NULL;
298 
299 	editor = getenv("VISUAL");
300 	if (editor == NULL)
301 		editor = getenv("EDITOR");
302 
303 	if (editor) {
304 		err = got_path_find_prog(abspath, editor);
305 		if (err)
306 			return err;
307 	}
308 
309 	if (*abspath == NULL) {
310 		*abspath = strdup("/bin/ed");
311 		if (*abspath == NULL)
312 			return got_error_from_errno("strdup");
313 	}
314 
315 	return NULL;
316 }
317 
318 static const struct got_error *
319 apply_unveil(const char *repo_path, int repo_read_only,
320     const char *worktree_path)
321 {
322 	const struct got_error *err;
323 
324 #ifdef PROFILE
325 	if (unveil("gmon.out", "rwc") != 0)
326 		return got_error_from_errno2("unveil", "gmon.out");
327 #endif
328 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
329 		return got_error_from_errno2("unveil", repo_path);
330 
331 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
332 		return got_error_from_errno2("unveil", worktree_path);
333 
334 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
335 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
336 
337 	err = got_privsep_unveil_exec_helpers();
338 	if (err != NULL)
339 		return err;
340 
341 	if (unveil(NULL, NULL) != 0)
342 		return got_error_from_errno("unveil");
343 
344 	return NULL;
345 }
346 
347 __dead static void
348 usage_import(void)
349 {
350 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
351 	    "[-r repository-path] directory\n", getprogname());
352 	exit(1);
353 }
354 
355 static int
356 spawn_editor(const char *editor, const char *file)
357 {
358 	pid_t pid;
359 	sig_t sighup, sigint, sigquit;
360 	int st = -1;
361 
362 	sighup = signal(SIGHUP, SIG_IGN);
363 	sigint = signal(SIGINT, SIG_IGN);
364 	sigquit = signal(SIGQUIT, SIG_IGN);
365 
366 	switch (pid = fork()) {
367 	case -1:
368 		goto doneediting;
369 	case 0:
370 		execl(editor, editor, file, (char *)NULL);
371 		_exit(127);
372 	}
373 
374 	while (waitpid(pid, &st, 0) == -1)
375 		if (errno != EINTR)
376 			break;
377 
378 doneediting:
379 	(void)signal(SIGHUP, sighup);
380 	(void)signal(SIGINT, sigint);
381 	(void)signal(SIGQUIT, sigquit);
382 
383 	if (!WIFEXITED(st)) {
384 		errno = EINTR;
385 		return -1;
386 	}
387 
388 	return WEXITSTATUS(st);
389 }
390 
391 static const struct got_error *
392 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
393     const char *initial_content, size_t initial_content_len,
394     int require_modification)
395 {
396 	const struct got_error *err = NULL;
397 	char *line = NULL;
398 	size_t linesize = 0;
399 	struct stat st, st2;
400 	FILE *fp = NULL;
401 	size_t len, logmsg_len;
402 	char *initial_content_stripped = NULL, *buf = NULL, *s;
403 
404 	*logmsg = NULL;
405 
406 	if (stat(logmsg_path, &st) == -1)
407 		return got_error_from_errno2("stat", logmsg_path);
408 
409 	if (spawn_editor(editor, logmsg_path) == -1)
410 		return got_error_from_errno("failed spawning editor");
411 
412 	if (stat(logmsg_path, &st2) == -1)
413 		return got_error_from_errno("stat");
414 
415 	if (require_modification &&
416 	    st.st_mtime == st2.st_mtime && st.st_size == st2.st_size)
417 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
418 		    "no changes made to commit message, aborting");
419 
420 	/*
421 	 * Set up a stripped version of the initial content without comments
422 	 * and blank lines. We need this in order to check if the message
423 	 * has in fact been edited.
424 	 */
425 	initial_content_stripped = malloc(initial_content_len + 1);
426 	if (initial_content_stripped == NULL)
427 		return got_error_from_errno("malloc");
428 	initial_content_stripped[0] = '\0';
429 
430 	buf = strdup(initial_content);
431 	if (buf == NULL) {
432 		err = got_error_from_errno("strdup");
433 		goto done;
434 	}
435 	s = buf;
436 	len = 0;
437 	while ((line = strsep(&s, "\n")) != NULL) {
438 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
439 			continue; /* remove comments and leading empty lines */
440 		len = strlcat(initial_content_stripped, line,
441 		    initial_content_len + 1);
442 		if (len >= initial_content_len + 1) {
443 			err = got_error(GOT_ERR_NO_SPACE);
444 			goto done;
445 		}
446 	}
447 	while (len > 0 && initial_content_stripped[len - 1] == '\n') {
448 		initial_content_stripped[len - 1] = '\0';
449 		len--;
450 	}
451 
452 	logmsg_len = st2.st_size;
453 	*logmsg = malloc(logmsg_len + 1);
454 	if (*logmsg == NULL)
455 		return got_error_from_errno("malloc");
456 	(*logmsg)[0] = '\0';
457 
458 	fp = fopen(logmsg_path, "re");
459 	if (fp == NULL) {
460 		err = got_error_from_errno("fopen");
461 		goto done;
462 	}
463 
464 	len = 0;
465 	while (getline(&line, &linesize, fp) != -1) {
466 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
467 			continue; /* remove comments and leading empty lines */
468 		len = strlcat(*logmsg, line, logmsg_len + 1);
469 		if (len >= logmsg_len + 1) {
470 			err = got_error(GOT_ERR_NO_SPACE);
471 			goto done;
472 		}
473 	}
474 	free(line);
475 	if (ferror(fp)) {
476 		err = got_ferror(fp, GOT_ERR_IO);
477 		goto done;
478 	}
479 	while (len > 0 && (*logmsg)[len - 1] == '\n') {
480 		(*logmsg)[len - 1] = '\0';
481 		len--;
482 	}
483 
484 	if (len == 0) {
485 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
486 		    "commit message cannot be empty, aborting");
487 		goto done;
488 	}
489 	if (require_modification &&
490 	    strcmp(*logmsg, initial_content_stripped) == 0)
491 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
492 		    "no changes made to commit message, aborting");
493 done:
494 	free(initial_content_stripped);
495 	free(buf);
496 	if (fp && fclose(fp) == EOF && err == NULL)
497 		err = got_error_from_errno("fclose");
498 	if (err) {
499 		free(*logmsg);
500 		*logmsg = NULL;
501 	}
502 	return err;
503 }
504 
505 static const struct got_error *
506 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
507     const char *path_dir, const char *branch_name)
508 {
509 	char *initial_content = NULL;
510 	const struct got_error *err = NULL;
511 	int initial_content_len;
512 	int fd = -1;
513 
514 	initial_content_len = asprintf(&initial_content,
515 	    "\n# %s to be imported to branch %s\n", path_dir,
516 	    branch_name);
517 	if (initial_content_len == -1)
518 		return got_error_from_errno("asprintf");
519 
520 	err = got_opentemp_named_fd(logmsg_path, &fd,
521 	    GOT_TMPDIR_STR "/got-importmsg", "");
522 	if (err)
523 		goto done;
524 
525 	if (write(fd, initial_content, initial_content_len) == -1) {
526 		err = got_error_from_errno2("write", *logmsg_path);
527 		goto done;
528 	}
529 
530 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
531 	    initial_content_len, 1);
532 done:
533 	if (fd != -1 && close(fd) == -1 && err == NULL)
534 		err = got_error_from_errno2("close", *logmsg_path);
535 	free(initial_content);
536 	if (err) {
537 		free(*logmsg_path);
538 		*logmsg_path = NULL;
539 	}
540 	return err;
541 }
542 
543 static const struct got_error *
544 import_progress(void *arg, const char *path)
545 {
546 	printf("A  %s\n", path);
547 	return NULL;
548 }
549 
550 static const struct got_error *
551 valid_author(const char *author)
552 {
553 	const char *email = author;
554 
555 	/*
556 	 * Git' expects the author (or committer) to be in the form
557 	 * "name <email>", which are mostly free form (see the
558 	 * "committer" description in git-fast-import(1)).  We're only
559 	 * doing this to avoid git's object parser breaking on commits
560 	 * we create.
561 	 */
562 
563 	while (*author && *author != '\n' && *author != '<' && *author != '>')
564 		author++;
565 	if (author != email && *author == '<' && *(author - 1) != ' ')
566 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
567 		    "between author name and email required", email);
568 	if (*author++ != '<')
569 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
570 	while (*author && *author != '\n' && *author != '<' && *author != '>')
571 		author++;
572 	if (strcmp(author, ">") != 0)
573 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
574 	return NULL;
575 }
576 
577 static const struct got_error *
578 get_author(char **author, struct got_repository *repo,
579     struct got_worktree *worktree)
580 {
581 	const struct got_error *err = NULL;
582 	const char *got_author = NULL, *name, *email;
583 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
584 
585 	*author = NULL;
586 
587 	if (worktree)
588 		worktree_conf = got_worktree_get_gotconfig(worktree);
589 	repo_conf = got_repo_get_gotconfig(repo);
590 
591 	/*
592 	 * Priority of potential author information sources, from most
593 	 * significant to least significant:
594 	 * 1) work tree's .got/got.conf file
595 	 * 2) repository's got.conf file
596 	 * 3) repository's git config file
597 	 * 4) environment variables
598 	 * 5) global git config files (in user's home directory or /etc)
599 	 */
600 
601 	if (worktree_conf)
602 		got_author = got_gotconfig_get_author(worktree_conf);
603 	if (got_author == NULL)
604 		got_author = got_gotconfig_get_author(repo_conf);
605 	if (got_author == NULL) {
606 		name = got_repo_get_gitconfig_author_name(repo);
607 		email = got_repo_get_gitconfig_author_email(repo);
608 		if (name && email) {
609 			if (asprintf(author, "%s <%s>", name, email) == -1)
610 				return got_error_from_errno("asprintf");
611 			return NULL;
612 		}
613 
614 		got_author = getenv("GOT_AUTHOR");
615 		if (got_author == NULL) {
616 			name = got_repo_get_global_gitconfig_author_name(repo);
617 			email = got_repo_get_global_gitconfig_author_email(
618 			    repo);
619 			if (name && email) {
620 				if (asprintf(author, "%s <%s>", name, email)
621 				    == -1)
622 					return got_error_from_errno("asprintf");
623 				return NULL;
624 			}
625 			/* TODO: Look up user in password database? */
626 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
627 		}
628 	}
629 
630 	*author = strdup(got_author);
631 	if (*author == NULL)
632 		return got_error_from_errno("strdup");
633 
634 	err = valid_author(*author);
635 	if (err) {
636 		free(*author);
637 		*author = NULL;
638 	}
639 	return err;
640 }
641 
642 static const struct got_error *
643 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
644     struct got_worktree *worktree)
645 {
646 	const char *got_allowed_signers = NULL;
647 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
648 
649 	*allowed_signers = NULL;
650 
651 	if (worktree)
652 		worktree_conf = got_worktree_get_gotconfig(worktree);
653 	repo_conf = got_repo_get_gotconfig(repo);
654 
655 	/*
656 	 * Priority of potential author information sources, from most
657 	 * significant to least significant:
658 	 * 1) work tree's .got/got.conf file
659 	 * 2) repository's got.conf file
660 	 */
661 
662 	if (worktree_conf)
663 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
664 		    worktree_conf);
665 	if (got_allowed_signers == NULL)
666 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
667 		    repo_conf);
668 
669 	if (got_allowed_signers) {
670 		*allowed_signers = strdup(got_allowed_signers);
671 		if (*allowed_signers == NULL)
672 			return got_error_from_errno("strdup");
673 	}
674 	return NULL;
675 }
676 
677 static const struct got_error *
678 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
679     struct got_worktree *worktree)
680 {
681 	const char *got_revoked_signers = NULL;
682 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
683 
684 	*revoked_signers = NULL;
685 
686 	if (worktree)
687 		worktree_conf = got_worktree_get_gotconfig(worktree);
688 	repo_conf = got_repo_get_gotconfig(repo);
689 
690 	/*
691 	 * Priority of potential author information sources, from most
692 	 * significant to least significant:
693 	 * 1) work tree's .got/got.conf file
694 	 * 2) repository's got.conf file
695 	 */
696 
697 	if (worktree_conf)
698 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
699 		    worktree_conf);
700 	if (got_revoked_signers == NULL)
701 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
702 		    repo_conf);
703 
704 	if (got_revoked_signers) {
705 		*revoked_signers = strdup(got_revoked_signers);
706 		if (*revoked_signers == NULL)
707 			return got_error_from_errno("strdup");
708 	}
709 	return NULL;
710 }
711 
712 static const struct got_error *
713 get_signer_id(char **signer_id, struct got_repository *repo,
714     struct got_worktree *worktree)
715 {
716 	const char *got_signer_id = NULL;
717 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
718 
719 	*signer_id = NULL;
720 
721 	if (worktree)
722 		worktree_conf = got_worktree_get_gotconfig(worktree);
723 	repo_conf = got_repo_get_gotconfig(repo);
724 
725 	/*
726 	 * Priority of potential author information sources, from most
727 	 * significant to least significant:
728 	 * 1) work tree's .got/got.conf file
729 	 * 2) repository's got.conf file
730 	 */
731 
732 	if (worktree_conf)
733 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
734 	if (got_signer_id == NULL)
735 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
736 
737 	if (got_signer_id) {
738 		*signer_id = strdup(got_signer_id);
739 		if (*signer_id == NULL)
740 			return got_error_from_errno("strdup");
741 	}
742 	return NULL;
743 }
744 
745 static const struct got_error *
746 get_gitconfig_path(char **gitconfig_path)
747 {
748 	const char *homedir = getenv("HOME");
749 
750 	*gitconfig_path = NULL;
751 	if (homedir) {
752 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
753 			return got_error_from_errno("asprintf");
754 
755 	}
756 	return NULL;
757 }
758 
759 static const struct got_error *
760 cmd_import(int argc, char *argv[])
761 {
762 	const struct got_error *error = NULL;
763 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
764 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
765 	const char *branch_name = NULL;
766 	char *id_str = NULL, *logmsg_path = NULL;
767 	char refname[PATH_MAX] = "refs/heads/";
768 	struct got_repository *repo = NULL;
769 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
770 	struct got_object_id *new_commit_id = NULL;
771 	int ch, n = 0;
772 	struct got_pathlist_head ignores;
773 	struct got_pathlist_entry *pe;
774 	int preserve_logmsg = 0;
775 	int *pack_fds = NULL;
776 
777 	TAILQ_INIT(&ignores);
778 
779 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
780 		switch (ch) {
781 		case 'b':
782 			branch_name = optarg;
783 			break;
784 		case 'I':
785 			if (optarg[0] == '\0')
786 				break;
787 			error = got_pathlist_insert(&pe, &ignores, optarg,
788 			    NULL);
789 			if (error)
790 				goto done;
791 			break;
792 		case 'm':
793 			logmsg = strdup(optarg);
794 			if (logmsg == NULL) {
795 				error = got_error_from_errno("strdup");
796 				goto done;
797 			}
798 			break;
799 		case 'r':
800 			repo_path = realpath(optarg, NULL);
801 			if (repo_path == NULL) {
802 				error = got_error_from_errno2("realpath",
803 				    optarg);
804 				goto done;
805 			}
806 			break;
807 		default:
808 			usage_import();
809 			/* NOTREACHED */
810 		}
811 	}
812 
813 	argc -= optind;
814 	argv += optind;
815 
816 #ifndef PROFILE
817 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
818 	    "unveil",
819 	    NULL) == -1)
820 		err(1, "pledge");
821 #endif
822 	if (argc != 1)
823 		usage_import();
824 
825 	if (repo_path == NULL) {
826 		repo_path = getcwd(NULL, 0);
827 		if (repo_path == NULL)
828 			return got_error_from_errno("getcwd");
829 	}
830 	got_path_strip_trailing_slashes(repo_path);
831 	error = get_gitconfig_path(&gitconfig_path);
832 	if (error)
833 		goto done;
834 	error = got_repo_pack_fds_open(&pack_fds);
835 	if (error != NULL)
836 		goto done;
837 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
838 	if (error)
839 		goto done;
840 
841 	error = get_author(&author, repo, NULL);
842 	if (error)
843 		return error;
844 
845 	/*
846 	 * Don't let the user create a branch name with a leading '-'.
847 	 * While technically a valid reference name, this case is usually
848 	 * an unintended typo.
849 	 */
850 	if (branch_name && branch_name[0] == '-')
851 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
852 
853 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
854 	if (error && error->code != GOT_ERR_NOT_REF)
855 		goto done;
856 
857 	if (branch_name)
858 		n = strlcat(refname, branch_name, sizeof(refname));
859 	else if (head_ref && got_ref_is_symbolic(head_ref))
860 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
861 		    sizeof(refname));
862 	else
863 		n = strlcat(refname, "main", sizeof(refname));
864 	if (n >= sizeof(refname)) {
865 		error = got_error(GOT_ERR_NO_SPACE);
866 		goto done;
867 	}
868 
869 	error = got_ref_open(&branch_ref, repo, refname, 0);
870 	if (error) {
871 		if (error->code != GOT_ERR_NOT_REF)
872 			goto done;
873 	} else {
874 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
875 		    "import target branch already exists");
876 		goto done;
877 	}
878 
879 	path_dir = realpath(argv[0], NULL);
880 	if (path_dir == NULL) {
881 		error = got_error_from_errno2("realpath", argv[0]);
882 		goto done;
883 	}
884 	got_path_strip_trailing_slashes(path_dir);
885 
886 	/*
887 	 * unveil(2) traverses exec(2); if an editor is used we have
888 	 * to apply unveil after the log message has been written.
889 	 */
890 	if (logmsg == NULL || strlen(logmsg) == 0) {
891 		error = get_editor(&editor);
892 		if (error)
893 			goto done;
894 		free(logmsg);
895 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
896 		    path_dir, refname);
897 		if (error) {
898 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
899 			    logmsg_path != NULL)
900 				preserve_logmsg = 1;
901 			goto done;
902 		}
903 	}
904 
905 	if (unveil(path_dir, "r") != 0) {
906 		error = got_error_from_errno2("unveil", path_dir);
907 		if (logmsg_path)
908 			preserve_logmsg = 1;
909 		goto done;
910 	}
911 
912 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
913 	if (error) {
914 		if (logmsg_path)
915 			preserve_logmsg = 1;
916 		goto done;
917 	}
918 
919 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
920 	    author, &ignores, repo, import_progress, NULL);
921 	if (error) {
922 		if (logmsg_path)
923 			preserve_logmsg = 1;
924 		goto done;
925 	}
926 
927 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
928 	if (error) {
929 		if (logmsg_path)
930 			preserve_logmsg = 1;
931 		goto done;
932 	}
933 
934 	error = got_ref_write(branch_ref, repo);
935 	if (error) {
936 		if (logmsg_path)
937 			preserve_logmsg = 1;
938 		goto done;
939 	}
940 
941 	error = got_object_id_str(&id_str, new_commit_id);
942 	if (error) {
943 		if (logmsg_path)
944 			preserve_logmsg = 1;
945 		goto done;
946 	}
947 
948 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
949 	if (error) {
950 		if (error->code != GOT_ERR_NOT_REF) {
951 			if (logmsg_path)
952 				preserve_logmsg = 1;
953 			goto done;
954 		}
955 
956 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
957 		    branch_ref);
958 		if (error) {
959 			if (logmsg_path)
960 				preserve_logmsg = 1;
961 			goto done;
962 		}
963 
964 		error = got_ref_write(head_ref, repo);
965 		if (error) {
966 			if (logmsg_path)
967 				preserve_logmsg = 1;
968 			goto done;
969 		}
970 	}
971 
972 	printf("Created branch %s with commit %s\n",
973 	    got_ref_get_name(branch_ref), id_str);
974 done:
975 	if (pack_fds) {
976 		const struct got_error *pack_err =
977 		    got_repo_pack_fds_close(pack_fds);
978 		if (error == NULL)
979 			error = pack_err;
980 	}
981 	if (preserve_logmsg) {
982 		fprintf(stderr, "%s: log message preserved in %s\n",
983 		    getprogname(), logmsg_path);
984 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
985 		error = got_error_from_errno2("unlink", logmsg_path);
986 	free(logmsg);
987 	free(logmsg_path);
988 	free(repo_path);
989 	free(editor);
990 	free(new_commit_id);
991 	free(id_str);
992 	free(author);
993 	free(gitconfig_path);
994 	if (branch_ref)
995 		got_ref_close(branch_ref);
996 	if (head_ref)
997 		got_ref_close(head_ref);
998 	return error;
999 }
1000 
1001 __dead static void
1002 usage_clone(void)
1003 {
1004 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
1005 	    "repository-URL [directory]\n", getprogname());
1006 	exit(1);
1007 }
1008 
1009 struct got_fetch_progress_arg {
1010 	char last_scaled_size[FMT_SCALED_STRSIZE];
1011 	int last_p_indexed;
1012 	int last_p_resolved;
1013 	int verbosity;
1014 
1015 	struct got_repository *repo;
1016 
1017 	int create_configs;
1018 	int configs_created;
1019 	struct {
1020 		struct got_pathlist_head *symrefs;
1021 		struct got_pathlist_head *wanted_branches;
1022 		struct got_pathlist_head *wanted_refs;
1023 		const char *proto;
1024 		const char *host;
1025 		const char *port;
1026 		const char *remote_repo_path;
1027 		const char *git_url;
1028 		int fetch_all_branches;
1029 		int mirror_references;
1030 	} config_info;
1031 };
1032 
1033 /* XXX forward declaration */
1034 static const struct got_error *
1035 create_config_files(const char *proto, const char *host, const char *port,
1036     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1037     int mirror_references, struct got_pathlist_head *symrefs,
1038     struct got_pathlist_head *wanted_branches,
1039     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1040 
1041 static const struct got_error *
1042 fetch_progress(void *arg, const char *message, off_t packfile_size,
1043     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1044 {
1045 	const struct got_error *err = NULL;
1046 	struct got_fetch_progress_arg *a = arg;
1047 	char scaled_size[FMT_SCALED_STRSIZE];
1048 	int p_indexed, p_resolved;
1049 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1050 
1051 	/*
1052 	 * In order to allow a failed clone to be resumed with 'got fetch'
1053 	 * we try to create configuration files as soon as possible.
1054 	 * Once the server has sent information about its default branch
1055 	 * we have all required information.
1056 	 */
1057 	if (a->create_configs && !a->configs_created &&
1058 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1059 		err = create_config_files(a->config_info.proto,
1060 		    a->config_info.host, a->config_info.port,
1061 		    a->config_info.remote_repo_path,
1062 		    a->config_info.git_url,
1063 		    a->config_info.fetch_all_branches,
1064 		    a->config_info.mirror_references,
1065 		    a->config_info.symrefs,
1066 		    a->config_info.wanted_branches,
1067 		    a->config_info.wanted_refs, a->repo);
1068 		if (err)
1069 			return err;
1070 		a->configs_created = 1;
1071 	}
1072 
1073 	if (a->verbosity < 0)
1074 		return NULL;
1075 
1076 	if (message && message[0] != '\0') {
1077 		printf("\rserver: %s", message);
1078 		fflush(stdout);
1079 		return NULL;
1080 	}
1081 
1082 	if (packfile_size > 0 || nobj_indexed > 0) {
1083 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1084 		    (a->last_scaled_size[0] == '\0' ||
1085 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1086 			print_size = 1;
1087 			if (strlcpy(a->last_scaled_size, scaled_size,
1088 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1089 				return got_error(GOT_ERR_NO_SPACE);
1090 		}
1091 		if (nobj_indexed > 0) {
1092 			p_indexed = (nobj_indexed * 100) / nobj_total;
1093 			if (p_indexed != a->last_p_indexed) {
1094 				a->last_p_indexed = p_indexed;
1095 				print_indexed = 1;
1096 				print_size = 1;
1097 			}
1098 		}
1099 		if (nobj_resolved > 0) {
1100 			p_resolved = (nobj_resolved * 100) /
1101 			    (nobj_total - nobj_loose);
1102 			if (p_resolved != a->last_p_resolved) {
1103 				a->last_p_resolved = p_resolved;
1104 				print_resolved = 1;
1105 				print_indexed = 1;
1106 				print_size = 1;
1107 			}
1108 		}
1109 
1110 	}
1111 	if (print_size || print_indexed || print_resolved)
1112 		printf("\r");
1113 	if (print_size)
1114 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1115 	if (print_indexed)
1116 		printf("; indexing %d%%", p_indexed);
1117 	if (print_resolved)
1118 		printf("; resolving deltas %d%%", p_resolved);
1119 	if (print_size || print_indexed || print_resolved)
1120 		fflush(stdout);
1121 
1122 	return NULL;
1123 }
1124 
1125 static const struct got_error *
1126 create_symref(const char *refname, struct got_reference *target_ref,
1127     int verbosity, struct got_repository *repo)
1128 {
1129 	const struct got_error *err;
1130 	struct got_reference *head_symref;
1131 
1132 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1133 	if (err)
1134 		return err;
1135 
1136 	err = got_ref_write(head_symref, repo);
1137 	if (err == NULL && verbosity > 0) {
1138 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1139 		    got_ref_get_name(target_ref));
1140 	}
1141 	got_ref_close(head_symref);
1142 	return err;
1143 }
1144 
1145 static const struct got_error *
1146 list_remote_refs(struct got_pathlist_head *symrefs,
1147     struct got_pathlist_head *refs)
1148 {
1149 	const struct got_error *err;
1150 	struct got_pathlist_entry *pe;
1151 
1152 	TAILQ_FOREACH(pe, symrefs, entry) {
1153 		const char *refname = pe->path;
1154 		const char *targetref = pe->data;
1155 
1156 		printf("%s: %s\n", refname, targetref);
1157 	}
1158 
1159 	TAILQ_FOREACH(pe, refs, entry) {
1160 		const char *refname = pe->path;
1161 		struct got_object_id *id = pe->data;
1162 		char *id_str;
1163 
1164 		err = got_object_id_str(&id_str, id);
1165 		if (err)
1166 			return err;
1167 		printf("%s: %s\n", refname, id_str);
1168 		free(id_str);
1169 	}
1170 
1171 	return NULL;
1172 }
1173 
1174 static const struct got_error *
1175 create_ref(const char *refname, struct got_object_id *id,
1176     int verbosity, struct got_repository *repo)
1177 {
1178 	const struct got_error *err = NULL;
1179 	struct got_reference *ref;
1180 	char *id_str;
1181 
1182 	err = got_object_id_str(&id_str, id);
1183 	if (err)
1184 		return err;
1185 
1186 	err = got_ref_alloc(&ref, refname, id);
1187 	if (err)
1188 		goto done;
1189 
1190 	err = got_ref_write(ref, repo);
1191 	got_ref_close(ref);
1192 
1193 	if (err == NULL && verbosity >= 0)
1194 		printf("Created reference %s: %s\n", refname, id_str);
1195 done:
1196 	free(id_str);
1197 	return err;
1198 }
1199 
1200 static int
1201 match_wanted_ref(const char *refname, const char *wanted_ref)
1202 {
1203 	if (strncmp(refname, "refs/", 5) != 0)
1204 		return 0;
1205 	refname += 5;
1206 
1207 	/*
1208 	 * Prevent fetching of references that won't make any
1209 	 * sense outside of the remote repository's context.
1210 	 */
1211 	if (strncmp(refname, "got/", 4) == 0)
1212 		return 0;
1213 	if (strncmp(refname, "remotes/", 8) == 0)
1214 		return 0;
1215 
1216 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1217 		wanted_ref += 5;
1218 
1219 	/* Allow prefix match. */
1220 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1221 		return 1;
1222 
1223 	/* Allow exact match. */
1224 	return (strcmp(refname, wanted_ref) == 0);
1225 }
1226 
1227 static int
1228 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1229 {
1230 	struct got_pathlist_entry *pe;
1231 
1232 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1233 		if (match_wanted_ref(refname, pe->path))
1234 			return 1;
1235 	}
1236 
1237 	return 0;
1238 }
1239 
1240 static const struct got_error *
1241 create_wanted_ref(const char *refname, struct got_object_id *id,
1242     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1243 {
1244 	const struct got_error *err;
1245 	char *remote_refname;
1246 
1247 	if (strncmp("refs/", refname, 5) == 0)
1248 		refname += 5;
1249 
1250 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1251 	    remote_repo_name, refname) == -1)
1252 		return got_error_from_errno("asprintf");
1253 
1254 	err = create_ref(remote_refname, id, verbosity, repo);
1255 	free(remote_refname);
1256 	return err;
1257 }
1258 
1259 static const struct got_error *
1260 create_gotconfig(const char *proto, const char *host, const char *port,
1261     const char *remote_repo_path, const char *default_branch,
1262     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1263     struct got_pathlist_head *wanted_refs, int mirror_references,
1264     struct got_repository *repo)
1265 {
1266 	const struct got_error *err = NULL;
1267 	char *gotconfig_path = NULL;
1268 	char *gotconfig = NULL;
1269 	FILE *gotconfig_file = NULL;
1270 	const char *branchname = NULL;
1271 	char *branches = NULL, *refs = NULL;
1272 	ssize_t n;
1273 
1274 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1275 		struct got_pathlist_entry *pe;
1276 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1277 			char *s;
1278 			branchname = pe->path;
1279 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1280 				branchname += 11;
1281 			if (asprintf(&s, "%s\"%s\" ",
1282 			    branches ? branches : "", branchname) == -1) {
1283 				err = got_error_from_errno("asprintf");
1284 				goto done;
1285 			}
1286 			free(branches);
1287 			branches = s;
1288 		}
1289 	} else if (!fetch_all_branches && default_branch) {
1290 		branchname = default_branch;
1291 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1292 			branchname += 11;
1293 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1294 			err = got_error_from_errno("asprintf");
1295 			goto done;
1296 		}
1297 	}
1298 	if (!TAILQ_EMPTY(wanted_refs)) {
1299 		struct got_pathlist_entry *pe;
1300 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1301 			char *s;
1302 			const char *refname = pe->path;
1303 			if (strncmp(refname, "refs/", 5) == 0)
1304 				branchname += 5;
1305 			if (asprintf(&s, "%s\"%s\" ",
1306 			    refs ? refs : "", refname) == -1) {
1307 				err = got_error_from_errno("asprintf");
1308 				goto done;
1309 			}
1310 			free(refs);
1311 			refs = s;
1312 		}
1313 	}
1314 
1315 	/* Create got.conf(5). */
1316 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1317 	if (gotconfig_path == NULL) {
1318 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1319 		goto done;
1320 	}
1321 	gotconfig_file = fopen(gotconfig_path, "ae");
1322 	if (gotconfig_file == NULL) {
1323 		err = got_error_from_errno2("fopen", gotconfig_path);
1324 		goto done;
1325 	}
1326 	if (asprintf(&gotconfig,
1327 	    "remote \"%s\" {\n"
1328 	    "\tserver %s\n"
1329 	    "\tprotocol %s\n"
1330 	    "%s%s%s"
1331 	    "\trepository \"%s\"\n"
1332 	    "%s%s%s"
1333 	    "%s%s%s"
1334 	    "%s"
1335 	    "%s"
1336 	    "}\n",
1337 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1338 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1339 	    remote_repo_path, branches ? "\tbranch { " : "",
1340 	    branches ? branches : "", branches ? "}\n" : "",
1341 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1342 	    mirror_references ? "\tmirror_references yes\n" : "",
1343 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1344 		err = got_error_from_errno("asprintf");
1345 		goto done;
1346 	}
1347 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1348 	if (n != strlen(gotconfig)) {
1349 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1350 		goto done;
1351 	}
1352 
1353 done:
1354 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1355 		err = got_error_from_errno2("fclose", gotconfig_path);
1356 	free(gotconfig_path);
1357 	free(branches);
1358 	return err;
1359 }
1360 
1361 static const struct got_error *
1362 create_gitconfig(const char *git_url, const char *default_branch,
1363     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1364     struct got_pathlist_head *wanted_refs, int mirror_references,
1365     struct got_repository *repo)
1366 {
1367 	const struct got_error *err = NULL;
1368 	char *gitconfig_path = NULL;
1369 	char *gitconfig = NULL;
1370 	FILE *gitconfig_file = NULL;
1371 	char *branches = NULL, *refs = NULL;
1372 	const char *branchname;
1373 	ssize_t n;
1374 
1375 	/* Create a config file Git can understand. */
1376 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1377 	if (gitconfig_path == NULL) {
1378 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1379 		goto done;
1380 	}
1381 	gitconfig_file = fopen(gitconfig_path, "ae");
1382 	if (gitconfig_file == NULL) {
1383 		err = got_error_from_errno2("fopen", gitconfig_path);
1384 		goto done;
1385 	}
1386 	if (fetch_all_branches) {
1387 		if (mirror_references) {
1388 			if (asprintf(&branches,
1389 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1390 				err = got_error_from_errno("asprintf");
1391 				goto done;
1392 			}
1393 		} else if (asprintf(&branches,
1394 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1395 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1396 			err = got_error_from_errno("asprintf");
1397 			goto done;
1398 		}
1399 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1400 		struct got_pathlist_entry *pe;
1401 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1402 			char *s;
1403 			branchname = pe->path;
1404 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1405 				branchname += 11;
1406 			if (mirror_references) {
1407 				if (asprintf(&s,
1408 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1409 				    branches ? branches : "",
1410 				    branchname, branchname) == -1) {
1411 					err = got_error_from_errno("asprintf");
1412 					goto done;
1413 				}
1414 			} else if (asprintf(&s,
1415 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1416 			    branches ? branches : "",
1417 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1418 			    branchname) == -1) {
1419 				err = got_error_from_errno("asprintf");
1420 				goto done;
1421 			}
1422 			free(branches);
1423 			branches = s;
1424 		}
1425 	} else {
1426 		/*
1427 		 * If the server specified a default branch, use just that one.
1428 		 * Otherwise fall back to fetching all branches on next fetch.
1429 		 */
1430 		if (default_branch) {
1431 			branchname = default_branch;
1432 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1433 				branchname += 11;
1434 		} else
1435 			branchname = "*"; /* fall back to all branches */
1436 		if (mirror_references) {
1437 			if (asprintf(&branches,
1438 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1439 			    branchname, branchname) == -1) {
1440 				err = got_error_from_errno("asprintf");
1441 				goto done;
1442 			}
1443 		} else if (asprintf(&branches,
1444 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1445 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1446 		    branchname) == -1) {
1447 			err = got_error_from_errno("asprintf");
1448 			goto done;
1449 		}
1450 	}
1451 	if (!TAILQ_EMPTY(wanted_refs)) {
1452 		struct got_pathlist_entry *pe;
1453 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1454 			char *s;
1455 			const char *refname = pe->path;
1456 			if (strncmp(refname, "refs/", 5) == 0)
1457 				refname += 5;
1458 			if (mirror_references) {
1459 				if (asprintf(&s,
1460 				    "%s\tfetch = refs/%s:refs/%s\n",
1461 				    refs ? refs : "", refname, refname) == -1) {
1462 					err = got_error_from_errno("asprintf");
1463 					goto done;
1464 				}
1465 			} else if (asprintf(&s,
1466 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1467 			    refs ? refs : "",
1468 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1469 			    refname) == -1) {
1470 				err = got_error_from_errno("asprintf");
1471 				goto done;
1472 			}
1473 			free(refs);
1474 			refs = s;
1475 		}
1476 	}
1477 
1478 	if (asprintf(&gitconfig,
1479 	    "[remote \"%s\"]\n"
1480 	    "\turl = %s\n"
1481 	    "%s"
1482 	    "%s"
1483 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1484 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1485 	    refs ? refs : "") == -1) {
1486 		err = got_error_from_errno("asprintf");
1487 		goto done;
1488 	}
1489 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1490 	if (n != strlen(gitconfig)) {
1491 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1492 		goto done;
1493 	}
1494 done:
1495 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1496 		err = got_error_from_errno2("fclose", gitconfig_path);
1497 	free(gitconfig_path);
1498 	free(branches);
1499 	return err;
1500 }
1501 
1502 static const struct got_error *
1503 create_config_files(const char *proto, const char *host, const char *port,
1504     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1505     int mirror_references, struct got_pathlist_head *symrefs,
1506     struct got_pathlist_head *wanted_branches,
1507     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1508 {
1509 	const struct got_error *err = NULL;
1510 	const char *default_branch = NULL;
1511 	struct got_pathlist_entry *pe;
1512 
1513 	/*
1514 	 * If we asked for a set of wanted branches then use the first
1515 	 * one of those.
1516 	 */
1517 	if (!TAILQ_EMPTY(wanted_branches)) {
1518 		pe = TAILQ_FIRST(wanted_branches);
1519 		default_branch = pe->path;
1520 	} else {
1521 		/* First HEAD ref listed by server is the default branch. */
1522 		TAILQ_FOREACH(pe, symrefs, entry) {
1523 			const char *refname = pe->path;
1524 			const char *target = pe->data;
1525 
1526 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1527 				continue;
1528 
1529 			default_branch = target;
1530 			break;
1531 		}
1532 	}
1533 
1534 	/* Create got.conf(5). */
1535 	err = create_gotconfig(proto, host, port, remote_repo_path,
1536 	    default_branch, fetch_all_branches, wanted_branches,
1537 	    wanted_refs, mirror_references, repo);
1538 	if (err)
1539 		return err;
1540 
1541 	/* Create a config file Git can understand. */
1542 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1543 	    wanted_branches, wanted_refs, mirror_references, repo);
1544 }
1545 
1546 static const struct got_error *
1547 cmd_clone(int argc, char *argv[])
1548 {
1549 	const struct got_error *error = NULL;
1550 	const char *uri, *dirname;
1551 	char *proto, *host, *port, *repo_name, *server_path;
1552 	char *default_destdir = NULL, *id_str = NULL;
1553 	const char *repo_path;
1554 	struct got_repository *repo = NULL;
1555 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1556 	struct got_pathlist_entry *pe;
1557 	struct got_object_id *pack_hash = NULL;
1558 	int ch, fetchfd = -1, fetchstatus;
1559 	pid_t fetchpid = -1;
1560 	struct got_fetch_progress_arg fpa;
1561 	char *git_url = NULL;
1562 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1563 	int list_refs_only = 0;
1564 	int *pack_fds = NULL;
1565 
1566 	TAILQ_INIT(&refs);
1567 	TAILQ_INIT(&symrefs);
1568 	TAILQ_INIT(&wanted_branches);
1569 	TAILQ_INIT(&wanted_refs);
1570 
1571 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1572 		switch (ch) {
1573 		case 'a':
1574 			fetch_all_branches = 1;
1575 			break;
1576 		case 'b':
1577 			error = got_pathlist_append(&wanted_branches,
1578 			    optarg, NULL);
1579 			if (error)
1580 				return error;
1581 			break;
1582 		case 'l':
1583 			list_refs_only = 1;
1584 			break;
1585 		case 'm':
1586 			mirror_references = 1;
1587 			break;
1588 		case 'q':
1589 			verbosity = -1;
1590 			break;
1591 		case 'R':
1592 			error = got_pathlist_append(&wanted_refs,
1593 			    optarg, NULL);
1594 			if (error)
1595 				return error;
1596 			break;
1597 		case 'v':
1598 			if (verbosity < 0)
1599 				verbosity = 0;
1600 			else if (verbosity < 3)
1601 				verbosity++;
1602 			break;
1603 		default:
1604 			usage_clone();
1605 			break;
1606 		}
1607 	}
1608 	argc -= optind;
1609 	argv += optind;
1610 
1611 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1612 		option_conflict('a', 'b');
1613 	if (list_refs_only) {
1614 		if (!TAILQ_EMPTY(&wanted_branches))
1615 			option_conflict('l', 'b');
1616 		if (fetch_all_branches)
1617 			option_conflict('l', 'a');
1618 		if (mirror_references)
1619 			option_conflict('l', 'm');
1620 		if (!TAILQ_EMPTY(&wanted_refs))
1621 			option_conflict('l', 'R');
1622 	}
1623 
1624 	uri = argv[0];
1625 
1626 	if (argc == 1)
1627 		dirname = NULL;
1628 	else if (argc == 2)
1629 		dirname = argv[1];
1630 	else
1631 		usage_clone();
1632 
1633 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1634 	    &repo_name, uri);
1635 	if (error)
1636 		goto done;
1637 
1638 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1639 	    host, port ? ":" : "", port ? port : "",
1640 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1641 		error = got_error_from_errno("asprintf");
1642 		goto done;
1643 	}
1644 
1645 	if (strcmp(proto, "git") == 0) {
1646 #ifndef PROFILE
1647 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1648 		    "sendfd dns inet unveil", NULL) == -1)
1649 			err(1, "pledge");
1650 #endif
1651 	} else if (strcmp(proto, "git+ssh") == 0 ||
1652 	    strcmp(proto, "ssh") == 0) {
1653 #ifndef PROFILE
1654 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1655 		    "sendfd unveil", NULL) == -1)
1656 			err(1, "pledge");
1657 #endif
1658 	} else if (strcmp(proto, "http") == 0 ||
1659 	    strcmp(proto, "git+http") == 0) {
1660 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1661 		goto done;
1662 	} else {
1663 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1664 		goto done;
1665 	}
1666 	if (dirname == NULL) {
1667 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1668 			error = got_error_from_errno("asprintf");
1669 			goto done;
1670 		}
1671 		repo_path = default_destdir;
1672 	} else
1673 		repo_path = dirname;
1674 
1675 	if (!list_refs_only) {
1676 		error = got_path_mkdir(repo_path);
1677 		if (error &&
1678 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1679 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1680 			goto done;
1681 		if (!got_path_dir_is_empty(repo_path)) {
1682 			error = got_error_path(repo_path,
1683 			    GOT_ERR_DIR_NOT_EMPTY);
1684 			goto done;
1685 		}
1686 	}
1687 
1688 	error = got_dial_apply_unveil(proto);
1689 	if (error)
1690 		goto done;
1691 
1692 	error = apply_unveil(repo_path, 0, NULL);
1693 	if (error)
1694 		goto done;
1695 
1696 	if (verbosity >= 0)
1697 		printf("Connecting to %s%s%s\n", host,
1698 		    port ? ":" : "", port ? port : "");
1699 
1700 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1701 	    server_path, verbosity);
1702 	if (error)
1703 		goto done;
1704 
1705 	if (!list_refs_only) {
1706 		error = got_repo_init(repo_path, NULL);
1707 		if (error)
1708 			goto done;
1709 		error = got_repo_pack_fds_open(&pack_fds);
1710 		if (error != NULL)
1711 			goto done;
1712 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1713 		if (error)
1714 			goto done;
1715 	}
1716 
1717 	fpa.last_scaled_size[0] = '\0';
1718 	fpa.last_p_indexed = -1;
1719 	fpa.last_p_resolved = -1;
1720 	fpa.verbosity = verbosity;
1721 	fpa.create_configs = 1;
1722 	fpa.configs_created = 0;
1723 	fpa.repo = repo;
1724 	fpa.config_info.symrefs = &symrefs;
1725 	fpa.config_info.wanted_branches = &wanted_branches;
1726 	fpa.config_info.wanted_refs = &wanted_refs;
1727 	fpa.config_info.proto = proto;
1728 	fpa.config_info.host = host;
1729 	fpa.config_info.port = port;
1730 	fpa.config_info.remote_repo_path = server_path;
1731 	fpa.config_info.git_url = git_url;
1732 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1733 	fpa.config_info.mirror_references = mirror_references;
1734 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1735 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1736 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1737 	    list_refs_only, verbosity, fetchfd, repo,
1738 	    fetch_progress, &fpa);
1739 	if (error)
1740 		goto done;
1741 
1742 	if (list_refs_only) {
1743 		error = list_remote_refs(&symrefs, &refs);
1744 		goto done;
1745 	}
1746 
1747 	if (pack_hash == NULL) {
1748 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1749 		    "server sent an empty pack file");
1750 		goto done;
1751 	}
1752 	error = got_object_id_str(&id_str, pack_hash);
1753 	if (error)
1754 		goto done;
1755 	if (verbosity >= 0)
1756 		printf("\nFetched %s.pack\n", id_str);
1757 	free(id_str);
1758 
1759 	/* Set up references provided with the pack file. */
1760 	TAILQ_FOREACH(pe, &refs, entry) {
1761 		const char *refname = pe->path;
1762 		struct got_object_id *id = pe->data;
1763 		char *remote_refname;
1764 
1765 		if (is_wanted_ref(&wanted_refs, refname) &&
1766 		    !mirror_references) {
1767 			error = create_wanted_ref(refname, id,
1768 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1769 			    verbosity - 1, repo);
1770 			if (error)
1771 				goto done;
1772 			continue;
1773 		}
1774 
1775 		error = create_ref(refname, id, verbosity - 1, repo);
1776 		if (error)
1777 			goto done;
1778 
1779 		if (mirror_references)
1780 			continue;
1781 
1782 		if (strncmp("refs/heads/", refname, 11) != 0)
1783 			continue;
1784 
1785 		if (asprintf(&remote_refname,
1786 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1787 		    refname + 11) == -1) {
1788 			error = got_error_from_errno("asprintf");
1789 			goto done;
1790 		}
1791 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1792 		free(remote_refname);
1793 		if (error)
1794 			goto done;
1795 	}
1796 
1797 	/* Set the HEAD reference if the server provided one. */
1798 	TAILQ_FOREACH(pe, &symrefs, entry) {
1799 		struct got_reference *target_ref;
1800 		const char *refname = pe->path;
1801 		const char *target = pe->data;
1802 		char *remote_refname = NULL, *remote_target = NULL;
1803 
1804 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1805 			continue;
1806 
1807 		error = got_ref_open(&target_ref, repo, target, 0);
1808 		if (error) {
1809 			if (error->code == GOT_ERR_NOT_REF) {
1810 				error = NULL;
1811 				continue;
1812 			}
1813 			goto done;
1814 		}
1815 
1816 		error = create_symref(refname, target_ref, verbosity, repo);
1817 		got_ref_close(target_ref);
1818 		if (error)
1819 			goto done;
1820 
1821 		if (mirror_references)
1822 			continue;
1823 
1824 		if (strncmp("refs/heads/", target, 11) != 0)
1825 			continue;
1826 
1827 		if (asprintf(&remote_refname,
1828 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1829 		    refname) == -1) {
1830 			error = got_error_from_errno("asprintf");
1831 			goto done;
1832 		}
1833 		if (asprintf(&remote_target,
1834 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1835 		    target + 11) == -1) {
1836 			error = got_error_from_errno("asprintf");
1837 			free(remote_refname);
1838 			goto done;
1839 		}
1840 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1841 		if (error) {
1842 			free(remote_refname);
1843 			free(remote_target);
1844 			if (error->code == GOT_ERR_NOT_REF) {
1845 				error = NULL;
1846 				continue;
1847 			}
1848 			goto done;
1849 		}
1850 		error = create_symref(remote_refname, target_ref,
1851 		    verbosity - 1, repo);
1852 		free(remote_refname);
1853 		free(remote_target);
1854 		got_ref_close(target_ref);
1855 		if (error)
1856 			goto done;
1857 	}
1858 	if (pe == NULL) {
1859 		/*
1860 		 * We failed to set the HEAD reference. If we asked for
1861 		 * a set of wanted branches use the first of one of those
1862 		 * which could be fetched instead.
1863 		 */
1864 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1865 			const char *target = pe->path;
1866 			struct got_reference *target_ref;
1867 
1868 			error = got_ref_open(&target_ref, repo, target, 0);
1869 			if (error) {
1870 				if (error->code == GOT_ERR_NOT_REF) {
1871 					error = NULL;
1872 					continue;
1873 				}
1874 				goto done;
1875 			}
1876 
1877 			error = create_symref(GOT_REF_HEAD, target_ref,
1878 			    verbosity, repo);
1879 			got_ref_close(target_ref);
1880 			if (error)
1881 				goto done;
1882 			break;
1883 		}
1884 
1885 		if (!fpa.configs_created && pe != NULL) {
1886 			error = create_config_files(fpa.config_info.proto,
1887 			    fpa.config_info.host, fpa.config_info.port,
1888 			    fpa.config_info.remote_repo_path,
1889 			    fpa.config_info.git_url,
1890 			    fpa.config_info.fetch_all_branches,
1891 			    fpa.config_info.mirror_references,
1892 			    fpa.config_info.symrefs,
1893 			    fpa.config_info.wanted_branches,
1894 			    fpa.config_info.wanted_refs, fpa.repo);
1895 			if (error)
1896 				goto done;
1897 		}
1898 	}
1899 
1900 	if (verbosity >= 0)
1901 		printf("Created %s repository '%s'\n",
1902 		    mirror_references ? "mirrored" : "cloned", repo_path);
1903 done:
1904 	if (pack_fds) {
1905 		const struct got_error *pack_err =
1906 		    got_repo_pack_fds_close(pack_fds);
1907 		if (error == NULL)
1908 			error = pack_err;
1909 	}
1910 	if (fetchpid > 0) {
1911 		if (kill(fetchpid, SIGTERM) == -1)
1912 			error = got_error_from_errno("kill");
1913 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1914 			error = got_error_from_errno("waitpid");
1915 	}
1916 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1917 		error = got_error_from_errno("close");
1918 	if (repo) {
1919 		const struct got_error *close_err = got_repo_close(repo);
1920 		if (error == NULL)
1921 			error = close_err;
1922 	}
1923 	TAILQ_FOREACH(pe, &refs, entry) {
1924 		free((void *)pe->path);
1925 		free(pe->data);
1926 	}
1927 	got_pathlist_free(&refs);
1928 	TAILQ_FOREACH(pe, &symrefs, entry) {
1929 		free((void *)pe->path);
1930 		free(pe->data);
1931 	}
1932 	got_pathlist_free(&symrefs);
1933 	got_pathlist_free(&wanted_branches);
1934 	got_pathlist_free(&wanted_refs);
1935 	free(pack_hash);
1936 	free(proto);
1937 	free(host);
1938 	free(port);
1939 	free(server_path);
1940 	free(repo_name);
1941 	free(default_destdir);
1942 	free(git_url);
1943 	return error;
1944 }
1945 
1946 static const struct got_error *
1947 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1948     int replace_tags, int verbosity, struct got_repository *repo)
1949 {
1950 	const struct got_error *err = NULL;
1951 	char *new_id_str = NULL;
1952 	struct got_object_id *old_id = NULL;
1953 
1954 	err = got_object_id_str(&new_id_str, new_id);
1955 	if (err)
1956 		goto done;
1957 
1958 	if (!replace_tags &&
1959 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1960 		err = got_ref_resolve(&old_id, repo, ref);
1961 		if (err)
1962 			goto done;
1963 		if (got_object_id_cmp(old_id, new_id) == 0)
1964 			goto done;
1965 		if (verbosity >= 0) {
1966 			printf("Rejecting update of existing tag %s: %s\n",
1967 			    got_ref_get_name(ref), new_id_str);
1968 		}
1969 		goto done;
1970 	}
1971 
1972 	if (got_ref_is_symbolic(ref)) {
1973 		if (verbosity >= 0) {
1974 			printf("Replacing reference %s: %s\n",
1975 			    got_ref_get_name(ref),
1976 			    got_ref_get_symref_target(ref));
1977 		}
1978 		err = got_ref_change_symref_to_ref(ref, new_id);
1979 		if (err)
1980 			goto done;
1981 		err = got_ref_write(ref, repo);
1982 		if (err)
1983 			goto done;
1984 	} else {
1985 		err = got_ref_resolve(&old_id, repo, ref);
1986 		if (err)
1987 			goto done;
1988 		if (got_object_id_cmp(old_id, new_id) == 0)
1989 			goto done;
1990 
1991 		err = got_ref_change_ref(ref, new_id);
1992 		if (err)
1993 			goto done;
1994 		err = got_ref_write(ref, repo);
1995 		if (err)
1996 			goto done;
1997 	}
1998 
1999 	if (verbosity >= 0)
2000 		printf("Updated %s: %s\n", got_ref_get_name(ref),
2001 		    new_id_str);
2002 done:
2003 	free(old_id);
2004 	free(new_id_str);
2005 	return err;
2006 }
2007 
2008 static const struct got_error *
2009 update_symref(const char *refname, struct got_reference *target_ref,
2010     int verbosity, struct got_repository *repo)
2011 {
2012 	const struct got_error *err = NULL, *unlock_err;
2013 	struct got_reference *symref;
2014 	int symref_is_locked = 0;
2015 
2016 	err = got_ref_open(&symref, repo, refname, 1);
2017 	if (err) {
2018 		if (err->code != GOT_ERR_NOT_REF)
2019 			return err;
2020 		err = got_ref_alloc_symref(&symref, refname, target_ref);
2021 		if (err)
2022 			goto done;
2023 
2024 		err = got_ref_write(symref, repo);
2025 		if (err)
2026 			goto done;
2027 
2028 		if (verbosity >= 0)
2029 			printf("Created reference %s: %s\n",
2030 			    got_ref_get_name(symref),
2031 			    got_ref_get_symref_target(symref));
2032 	} else {
2033 		symref_is_locked = 1;
2034 
2035 		if (strcmp(got_ref_get_symref_target(symref),
2036 		    got_ref_get_name(target_ref)) == 0)
2037 			goto done;
2038 
2039 		err = got_ref_change_symref(symref,
2040 		    got_ref_get_name(target_ref));
2041 		if (err)
2042 			goto done;
2043 
2044 		err = got_ref_write(symref, repo);
2045 		if (err)
2046 			goto done;
2047 
2048 		if (verbosity >= 0)
2049 			printf("Updated %s: %s\n", got_ref_get_name(symref),
2050 			    got_ref_get_symref_target(symref));
2051 
2052 	}
2053 done:
2054 	if (symref_is_locked) {
2055 		unlock_err = got_ref_unlock(symref);
2056 		if (unlock_err && err == NULL)
2057 			err = unlock_err;
2058 	}
2059 	got_ref_close(symref);
2060 	return err;
2061 }
2062 
2063 __dead static void
2064 usage_fetch(void)
2065 {
2066 	fprintf(stderr, "usage: %s fetch [-adlqtvX] [-b branch] "
2067 	    "[-R reference] [-r repository-path] [remote-repository]\n",
2068 	    getprogname());
2069 	exit(1);
2070 }
2071 
2072 static const struct got_error *
2073 delete_missing_ref(struct got_reference *ref,
2074     int verbosity, struct got_repository *repo)
2075 {
2076 	const struct got_error *err = NULL;
2077 	struct got_object_id *id = NULL;
2078 	char *id_str = NULL;
2079 
2080 	if (got_ref_is_symbolic(ref)) {
2081 		err = got_ref_delete(ref, repo);
2082 		if (err)
2083 			return err;
2084 		if (verbosity >= 0) {
2085 			printf("Deleted %s: %s\n",
2086 			    got_ref_get_name(ref),
2087 			    got_ref_get_symref_target(ref));
2088 		}
2089 	} else {
2090 		err = got_ref_resolve(&id, repo, ref);
2091 		if (err)
2092 			return err;
2093 		err = got_object_id_str(&id_str, id);
2094 		if (err)
2095 			goto done;
2096 
2097 		err = got_ref_delete(ref, repo);
2098 		if (err)
2099 			goto done;
2100 		if (verbosity >= 0) {
2101 			printf("Deleted %s: %s\n",
2102 			    got_ref_get_name(ref), id_str);
2103 		}
2104 	}
2105 done:
2106 	free(id);
2107 	free(id_str);
2108 	return NULL;
2109 }
2110 
2111 static const struct got_error *
2112 delete_missing_refs(struct got_pathlist_head *their_refs,
2113     struct got_pathlist_head *their_symrefs,
2114     const struct got_remote_repo *remote,
2115     int verbosity, struct got_repository *repo)
2116 {
2117 	const struct got_error *err = NULL, *unlock_err;
2118 	struct got_reflist_head my_refs;
2119 	struct got_reflist_entry *re;
2120 	struct got_pathlist_entry *pe;
2121 	char *remote_namespace = NULL;
2122 	char *local_refname = NULL;
2123 
2124 	TAILQ_INIT(&my_refs);
2125 
2126 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2127 	    == -1)
2128 		return got_error_from_errno("asprintf");
2129 
2130 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2131 	if (err)
2132 		goto done;
2133 
2134 	TAILQ_FOREACH(re, &my_refs, entry) {
2135 		const char *refname = got_ref_get_name(re->ref);
2136 		const char *their_refname;
2137 
2138 		if (remote->mirror_references) {
2139 			their_refname = refname;
2140 		} else {
2141 			if (strncmp(refname, remote_namespace,
2142 			    strlen(remote_namespace)) == 0) {
2143 				if (strcmp(refname + strlen(remote_namespace),
2144 				    GOT_REF_HEAD) == 0)
2145 					continue;
2146 				if (asprintf(&local_refname, "refs/heads/%s",
2147 				    refname + strlen(remote_namespace)) == -1) {
2148 					err = got_error_from_errno("asprintf");
2149 					goto done;
2150 				}
2151 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2152 				continue;
2153 
2154 			their_refname = local_refname;
2155 		}
2156 
2157 		TAILQ_FOREACH(pe, their_refs, entry) {
2158 			if (strcmp(their_refname, pe->path) == 0)
2159 				break;
2160 		}
2161 		if (pe != NULL)
2162 			continue;
2163 
2164 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2165 			if (strcmp(their_refname, pe->path) == 0)
2166 				break;
2167 		}
2168 		if (pe != NULL)
2169 			continue;
2170 
2171 		err = delete_missing_ref(re->ref, verbosity, repo);
2172 		if (err)
2173 			break;
2174 
2175 		if (local_refname) {
2176 			struct got_reference *ref;
2177 			err = got_ref_open(&ref, repo, local_refname, 1);
2178 			if (err) {
2179 				if (err->code != GOT_ERR_NOT_REF)
2180 					break;
2181 				free(local_refname);
2182 				local_refname = NULL;
2183 				continue;
2184 			}
2185 			err = delete_missing_ref(ref, verbosity, repo);
2186 			if (err)
2187 				break;
2188 			unlock_err = got_ref_unlock(ref);
2189 			got_ref_close(ref);
2190 			if (unlock_err && err == NULL) {
2191 				err = unlock_err;
2192 				break;
2193 			}
2194 
2195 			free(local_refname);
2196 			local_refname = NULL;
2197 		}
2198 	}
2199 done:
2200 	got_ref_list_free(&my_refs);
2201 	free(remote_namespace);
2202 	free(local_refname);
2203 	return err;
2204 }
2205 
2206 static const struct got_error *
2207 update_wanted_ref(const char *refname, struct got_object_id *id,
2208     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2209 {
2210 	const struct got_error *err, *unlock_err;
2211 	char *remote_refname;
2212 	struct got_reference *ref;
2213 
2214 	if (strncmp("refs/", refname, 5) == 0)
2215 		refname += 5;
2216 
2217 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2218 	    remote_repo_name, refname) == -1)
2219 		return got_error_from_errno("asprintf");
2220 
2221 	err = got_ref_open(&ref, repo, remote_refname, 1);
2222 	if (err) {
2223 		if (err->code != GOT_ERR_NOT_REF)
2224 			goto done;
2225 		err = create_ref(remote_refname, id, verbosity, repo);
2226 	} else {
2227 		err = update_ref(ref, id, 0, verbosity, repo);
2228 		unlock_err = got_ref_unlock(ref);
2229 		if (unlock_err && err == NULL)
2230 			err = unlock_err;
2231 		got_ref_close(ref);
2232 	}
2233 done:
2234 	free(remote_refname);
2235 	return err;
2236 }
2237 
2238 static const struct got_error *
2239 delete_ref(struct got_repository *repo, struct got_reference *ref)
2240 {
2241 	const struct got_error *err = NULL;
2242 	struct got_object_id *id = NULL;
2243 	char *id_str = NULL;
2244 	const char *target;
2245 
2246 	if (got_ref_is_symbolic(ref)) {
2247 		target = got_ref_get_symref_target(ref);
2248 	} else {
2249 		err = got_ref_resolve(&id, repo, ref);
2250 		if (err)
2251 			goto done;
2252 		err = got_object_id_str(&id_str, id);
2253 		if (err)
2254 			goto done;
2255 		target = id_str;
2256 	}
2257 
2258 	err = got_ref_delete(ref, repo);
2259 	if (err)
2260 		goto done;
2261 
2262 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2263 done:
2264 	free(id);
2265 	free(id_str);
2266 	return err;
2267 }
2268 
2269 static const struct got_error *
2270 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2271 {
2272 	const struct got_error *err = NULL;
2273 	struct got_reflist_head refs;
2274 	struct got_reflist_entry *re;
2275 	char *prefix;
2276 
2277 	TAILQ_INIT(&refs);
2278 
2279 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2280 		err = got_error_from_errno("asprintf");
2281 		goto done;
2282 	}
2283 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2284 	if (err)
2285 		goto done;
2286 
2287 	TAILQ_FOREACH(re, &refs, entry)
2288 		delete_ref(repo, re->ref);
2289 done:
2290 	got_ref_list_free(&refs);
2291 	return err;
2292 }
2293 
2294 static const struct got_error *
2295 cmd_fetch(int argc, char *argv[])
2296 {
2297 	const struct got_error *error = NULL, *unlock_err;
2298 	char *cwd = NULL, *repo_path = NULL;
2299 	const char *remote_name;
2300 	char *proto = NULL, *host = NULL, *port = NULL;
2301 	char *repo_name = NULL, *server_path = NULL;
2302 	const struct got_remote_repo *remotes, *remote = NULL;
2303 	int nremotes;
2304 	char *id_str = NULL;
2305 	struct got_repository *repo = NULL;
2306 	struct got_worktree *worktree = NULL;
2307 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2308 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2309 	struct got_pathlist_entry *pe;
2310 	struct got_object_id *pack_hash = NULL;
2311 	int i, ch, fetchfd = -1, fetchstatus;
2312 	pid_t fetchpid = -1;
2313 	struct got_fetch_progress_arg fpa;
2314 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2315 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2316 	int *pack_fds = NULL;
2317 
2318 	TAILQ_INIT(&refs);
2319 	TAILQ_INIT(&symrefs);
2320 	TAILQ_INIT(&wanted_branches);
2321 	TAILQ_INIT(&wanted_refs);
2322 
2323 	while ((ch = getopt(argc, argv, "ab:dlqR:r:tvX")) != -1) {
2324 		switch (ch) {
2325 		case 'a':
2326 			fetch_all_branches = 1;
2327 			break;
2328 		case 'b':
2329 			error = got_pathlist_append(&wanted_branches,
2330 			    optarg, NULL);
2331 			if (error)
2332 				return error;
2333 			break;
2334 		case 'd':
2335 			delete_refs = 1;
2336 			break;
2337 		case 'l':
2338 			list_refs_only = 1;
2339 			break;
2340 		case 'q':
2341 			verbosity = -1;
2342 			break;
2343 		case 'R':
2344 			error = got_pathlist_append(&wanted_refs,
2345 			    optarg, NULL);
2346 			if (error)
2347 				return error;
2348 			break;
2349 		case 'r':
2350 			repo_path = realpath(optarg, NULL);
2351 			if (repo_path == NULL)
2352 				return got_error_from_errno2("realpath",
2353 				    optarg);
2354 			got_path_strip_trailing_slashes(repo_path);
2355 			break;
2356 		case 't':
2357 			replace_tags = 1;
2358 			break;
2359 		case 'v':
2360 			if (verbosity < 0)
2361 				verbosity = 0;
2362 			else if (verbosity < 3)
2363 				verbosity++;
2364 			break;
2365 		case 'X':
2366 			delete_remote = 1;
2367 			break;
2368 		default:
2369 			usage_fetch();
2370 			break;
2371 		}
2372 	}
2373 	argc -= optind;
2374 	argv += optind;
2375 
2376 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2377 		option_conflict('a', 'b');
2378 	if (list_refs_only) {
2379 		if (!TAILQ_EMPTY(&wanted_branches))
2380 			option_conflict('l', 'b');
2381 		if (fetch_all_branches)
2382 			option_conflict('l', 'a');
2383 		if (delete_refs)
2384 			option_conflict('l', 'd');
2385 		if (delete_remote)
2386 			option_conflict('l', 'X');
2387 	}
2388 	if (delete_remote) {
2389 		if (fetch_all_branches)
2390 			option_conflict('X', 'a');
2391 		if (!TAILQ_EMPTY(&wanted_branches))
2392 			option_conflict('X', 'b');
2393 		if (delete_refs)
2394 			option_conflict('X', 'd');
2395 		if (replace_tags)
2396 			option_conflict('X', 't');
2397 		if (!TAILQ_EMPTY(&wanted_refs))
2398 			option_conflict('X', 'R');
2399 	}
2400 
2401 	if (argc == 0) {
2402 		if (delete_remote)
2403 			errx(1, "-X option requires a remote name");
2404 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2405 	} else if (argc == 1)
2406 		remote_name = argv[0];
2407 	else
2408 		usage_fetch();
2409 
2410 	cwd = getcwd(NULL, 0);
2411 	if (cwd == NULL) {
2412 		error = got_error_from_errno("getcwd");
2413 		goto done;
2414 	}
2415 
2416 	error = got_repo_pack_fds_open(&pack_fds);
2417 	if (error != NULL)
2418 		goto done;
2419 
2420 	if (repo_path == NULL) {
2421 		error = got_worktree_open(&worktree, cwd);
2422 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2423 			goto done;
2424 		else
2425 			error = NULL;
2426 		if (worktree) {
2427 			repo_path =
2428 			    strdup(got_worktree_get_repo_path(worktree));
2429 			if (repo_path == NULL)
2430 				error = got_error_from_errno("strdup");
2431 			if (error)
2432 				goto done;
2433 		} else {
2434 			repo_path = strdup(cwd);
2435 			if (repo_path == NULL) {
2436 				error = got_error_from_errno("strdup");
2437 				goto done;
2438 			}
2439 		}
2440 	}
2441 
2442 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2443 	if (error)
2444 		goto done;
2445 
2446 	if (delete_remote) {
2447 		error = delete_refs_for_remote(repo, remote_name);
2448 		goto done; /* nothing else to do */
2449 	}
2450 
2451 	if (worktree) {
2452 		worktree_conf = got_worktree_get_gotconfig(worktree);
2453 		if (worktree_conf) {
2454 			got_gotconfig_get_remotes(&nremotes, &remotes,
2455 			    worktree_conf);
2456 			for (i = 0; i < nremotes; i++) {
2457 				if (strcmp(remotes[i].name, remote_name) == 0) {
2458 					remote = &remotes[i];
2459 					break;
2460 				}
2461 			}
2462 		}
2463 	}
2464 	if (remote == NULL) {
2465 		repo_conf = got_repo_get_gotconfig(repo);
2466 		if (repo_conf) {
2467 			got_gotconfig_get_remotes(&nremotes, &remotes,
2468 			    repo_conf);
2469 			for (i = 0; i < nremotes; i++) {
2470 				if (strcmp(remotes[i].name, remote_name) == 0) {
2471 					remote = &remotes[i];
2472 					break;
2473 				}
2474 			}
2475 		}
2476 	}
2477 	if (remote == NULL) {
2478 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2479 		for (i = 0; i < nremotes; i++) {
2480 			if (strcmp(remotes[i].name, remote_name) == 0) {
2481 				remote = &remotes[i];
2482 				break;
2483 			}
2484 		}
2485 	}
2486 	if (remote == NULL) {
2487 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2488 		goto done;
2489 	}
2490 
2491 	if (TAILQ_EMPTY(&wanted_branches)) {
2492 		if (!fetch_all_branches)
2493 			fetch_all_branches = remote->fetch_all_branches;
2494 		for (i = 0; i < remote->nfetch_branches; i++) {
2495 			got_pathlist_append(&wanted_branches,
2496 			    remote->fetch_branches[i], NULL);
2497 		}
2498 	}
2499 	if (TAILQ_EMPTY(&wanted_refs)) {
2500 		for (i = 0; i < remote->nfetch_refs; i++) {
2501 			got_pathlist_append(&wanted_refs,
2502 			    remote->fetch_refs[i], NULL);
2503 		}
2504 	}
2505 
2506 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2507 	    &repo_name, remote->fetch_url);
2508 	if (error)
2509 		goto done;
2510 
2511 	if (strcmp(proto, "git") == 0) {
2512 #ifndef PROFILE
2513 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2514 		    "sendfd dns inet unveil", NULL) == -1)
2515 			err(1, "pledge");
2516 #endif
2517 	} else if (strcmp(proto, "git+ssh") == 0 ||
2518 	    strcmp(proto, "ssh") == 0) {
2519 #ifndef PROFILE
2520 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2521 		    "sendfd unveil", NULL) == -1)
2522 			err(1, "pledge");
2523 #endif
2524 	} else if (strcmp(proto, "http") == 0 ||
2525 	    strcmp(proto, "git+http") == 0) {
2526 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2527 		goto done;
2528 	} else {
2529 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2530 		goto done;
2531 	}
2532 
2533 	error = got_dial_apply_unveil(proto);
2534 	if (error)
2535 		goto done;
2536 
2537 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2538 	if (error)
2539 		goto done;
2540 
2541 	if (verbosity >= 0)
2542 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
2543 		    port ? ":" : "", port ? port : "");
2544 
2545 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2546 	    server_path, verbosity);
2547 	if (error)
2548 		goto done;
2549 
2550 	fpa.last_scaled_size[0] = '\0';
2551 	fpa.last_p_indexed = -1;
2552 	fpa.last_p_resolved = -1;
2553 	fpa.verbosity = verbosity;
2554 	fpa.repo = repo;
2555 	fpa.create_configs = 0;
2556 	fpa.configs_created = 0;
2557 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2558 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2559 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2560 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2561 	    fetch_progress, &fpa);
2562 	if (error)
2563 		goto done;
2564 
2565 	if (list_refs_only) {
2566 		error = list_remote_refs(&symrefs, &refs);
2567 		goto done;
2568 	}
2569 
2570 	if (pack_hash == NULL) {
2571 		if (verbosity >= 0)
2572 			printf("Already up-to-date\n");
2573 	} else if (verbosity >= 0) {
2574 		error = got_object_id_str(&id_str, pack_hash);
2575 		if (error)
2576 			goto done;
2577 		printf("\nFetched %s.pack\n", id_str);
2578 		free(id_str);
2579 		id_str = NULL;
2580 	}
2581 
2582 	/* Update references provided with the pack file. */
2583 	TAILQ_FOREACH(pe, &refs, entry) {
2584 		const char *refname = pe->path;
2585 		struct got_object_id *id = pe->data;
2586 		struct got_reference *ref;
2587 		char *remote_refname;
2588 
2589 		if (is_wanted_ref(&wanted_refs, refname) &&
2590 		    !remote->mirror_references) {
2591 			error = update_wanted_ref(refname, id,
2592 			    remote->name, verbosity, repo);
2593 			if (error)
2594 				goto done;
2595 			continue;
2596 		}
2597 
2598 		if (remote->mirror_references ||
2599 		    strncmp("refs/tags/", refname, 10) == 0) {
2600 			error = got_ref_open(&ref, repo, refname, 1);
2601 			if (error) {
2602 				if (error->code != GOT_ERR_NOT_REF)
2603 					goto done;
2604 				error = create_ref(refname, id, verbosity,
2605 				    repo);
2606 				if (error)
2607 					goto done;
2608 			} else {
2609 				error = update_ref(ref, id, replace_tags,
2610 				    verbosity, repo);
2611 				unlock_err = got_ref_unlock(ref);
2612 				if (unlock_err && error == NULL)
2613 					error = unlock_err;
2614 				got_ref_close(ref);
2615 				if (error)
2616 					goto done;
2617 			}
2618 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2619 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2620 			    remote_name, refname + 11) == -1) {
2621 				error = got_error_from_errno("asprintf");
2622 				goto done;
2623 			}
2624 
2625 			error = got_ref_open(&ref, repo, remote_refname, 1);
2626 			if (error) {
2627 				if (error->code != GOT_ERR_NOT_REF)
2628 					goto done;
2629 				error = create_ref(remote_refname, id,
2630 				    verbosity, repo);
2631 				if (error)
2632 					goto done;
2633 			} else {
2634 				error = update_ref(ref, id, replace_tags,
2635 				    verbosity, repo);
2636 				unlock_err = got_ref_unlock(ref);
2637 				if (unlock_err && error == NULL)
2638 					error = unlock_err;
2639 				got_ref_close(ref);
2640 				if (error)
2641 					goto done;
2642 			}
2643 
2644 			/* Also create a local branch if none exists yet. */
2645 			error = got_ref_open(&ref, repo, refname, 1);
2646 			if (error) {
2647 				if (error->code != GOT_ERR_NOT_REF)
2648 					goto done;
2649 				error = create_ref(refname, id, verbosity,
2650 				    repo);
2651 				if (error)
2652 					goto done;
2653 			} else {
2654 				unlock_err = got_ref_unlock(ref);
2655 				if (unlock_err && error == NULL)
2656 					error = unlock_err;
2657 				got_ref_close(ref);
2658 			}
2659 		}
2660 	}
2661 	if (delete_refs) {
2662 		error = delete_missing_refs(&refs, &symrefs, remote,
2663 		    verbosity, repo);
2664 		if (error)
2665 			goto done;
2666 	}
2667 
2668 	if (!remote->mirror_references) {
2669 		/* Update remote HEAD reference if the server provided one. */
2670 		TAILQ_FOREACH(pe, &symrefs, entry) {
2671 			struct got_reference *target_ref;
2672 			const char *refname = pe->path;
2673 			const char *target = pe->data;
2674 			char *remote_refname = NULL, *remote_target = NULL;
2675 
2676 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2677 				continue;
2678 
2679 			if (strncmp("refs/heads/", target, 11) != 0)
2680 				continue;
2681 
2682 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2683 			    remote->name, refname) == -1) {
2684 				error = got_error_from_errno("asprintf");
2685 				goto done;
2686 			}
2687 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2688 			    remote->name, target + 11) == -1) {
2689 				error = got_error_from_errno("asprintf");
2690 				free(remote_refname);
2691 				goto done;
2692 			}
2693 
2694 			error = got_ref_open(&target_ref, repo, remote_target,
2695 			    0);
2696 			if (error) {
2697 				free(remote_refname);
2698 				free(remote_target);
2699 				if (error->code == GOT_ERR_NOT_REF) {
2700 					error = NULL;
2701 					continue;
2702 				}
2703 				goto done;
2704 			}
2705 			error = update_symref(remote_refname, target_ref,
2706 			    verbosity, repo);
2707 			free(remote_refname);
2708 			free(remote_target);
2709 			got_ref_close(target_ref);
2710 			if (error)
2711 				goto done;
2712 		}
2713 	}
2714 done:
2715 	if (fetchpid > 0) {
2716 		if (kill(fetchpid, SIGTERM) == -1)
2717 			error = got_error_from_errno("kill");
2718 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2719 			error = got_error_from_errno("waitpid");
2720 	}
2721 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2722 		error = got_error_from_errno("close");
2723 	if (repo) {
2724 		const struct got_error *close_err = got_repo_close(repo);
2725 		if (error == NULL)
2726 			error = close_err;
2727 	}
2728 	if (worktree)
2729 		got_worktree_close(worktree);
2730 	if (pack_fds) {
2731 		const struct got_error *pack_err =
2732 		    got_repo_pack_fds_close(pack_fds);
2733 		if (error == NULL)
2734 			error = pack_err;
2735 	}
2736 	TAILQ_FOREACH(pe, &refs, entry) {
2737 		free((void *)pe->path);
2738 		free(pe->data);
2739 	}
2740 	got_pathlist_free(&refs);
2741 	TAILQ_FOREACH(pe, &symrefs, entry) {
2742 		free((void *)pe->path);
2743 		free(pe->data);
2744 	}
2745 	got_pathlist_free(&symrefs);
2746 	got_pathlist_free(&wanted_branches);
2747 	got_pathlist_free(&wanted_refs);
2748 	free(id_str);
2749 	free(cwd);
2750 	free(repo_path);
2751 	free(pack_hash);
2752 	free(proto);
2753 	free(host);
2754 	free(port);
2755 	free(server_path);
2756 	free(repo_name);
2757 	return error;
2758 }
2759 
2760 
2761 __dead static void
2762 usage_checkout(void)
2763 {
2764 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2765 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2766 	    getprogname());
2767 	exit(1);
2768 }
2769 
2770 static void
2771 show_worktree_base_ref_warning(void)
2772 {
2773 	fprintf(stderr, "%s: warning: could not create a reference "
2774 	    "to the work tree's base commit; the commit could be "
2775 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2776 	    "repository writable and running 'got update' will prevent this\n",
2777 	    getprogname());
2778 }
2779 
2780 struct got_checkout_progress_arg {
2781 	const char *worktree_path;
2782 	int had_base_commit_ref_error;
2783 	int verbosity;
2784 };
2785 
2786 static const struct got_error *
2787 checkout_progress(void *arg, unsigned char status, const char *path)
2788 {
2789 	struct got_checkout_progress_arg *a = arg;
2790 
2791 	/* Base commit bump happens silently. */
2792 	if (status == GOT_STATUS_BUMP_BASE)
2793 		return NULL;
2794 
2795 	if (status == GOT_STATUS_BASE_REF_ERR) {
2796 		a->had_base_commit_ref_error = 1;
2797 		return NULL;
2798 	}
2799 
2800 	while (path[0] == '/')
2801 		path++;
2802 
2803 	if (a->verbosity >= 0)
2804 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2805 
2806 	return NULL;
2807 }
2808 
2809 static const struct got_error *
2810 check_cancelled(void *arg)
2811 {
2812 	if (sigint_received || sigpipe_received)
2813 		return got_error(GOT_ERR_CANCELLED);
2814 	return NULL;
2815 }
2816 
2817 static const struct got_error *
2818 check_linear_ancestry(struct got_object_id *commit_id,
2819     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2820     struct got_repository *repo)
2821 {
2822 	const struct got_error *err = NULL;
2823 	struct got_object_id *yca_id;
2824 
2825 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2826 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2827 	if (err)
2828 		return err;
2829 
2830 	if (yca_id == NULL)
2831 		return got_error(GOT_ERR_ANCESTRY);
2832 
2833 	/*
2834 	 * Require a straight line of history between the target commit
2835 	 * and the work tree's base commit.
2836 	 *
2837 	 * Non-linear situations such as this require a rebase:
2838 	 *
2839 	 * (commit) D       F (base_commit)
2840 	 *           \     /
2841 	 *            C   E
2842 	 *             \ /
2843 	 *              B (yca)
2844 	 *              |
2845 	 *              A
2846 	 *
2847 	 * 'got update' only handles linear cases:
2848 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2849 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2850 	 */
2851 	if (allow_forwards_in_time_only) {
2852 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2853 		return got_error(GOT_ERR_ANCESTRY);
2854 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2855 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2856 		return got_error(GOT_ERR_ANCESTRY);
2857 
2858 	free(yca_id);
2859 	return NULL;
2860 }
2861 
2862 static const struct got_error *
2863 check_same_branch(struct got_object_id *commit_id,
2864     struct got_reference *head_ref, struct got_object_id *yca_id,
2865     struct got_repository *repo)
2866 {
2867 	const struct got_error *err = NULL;
2868 	struct got_commit_graph *graph = NULL;
2869 	struct got_object_id *head_commit_id = NULL;
2870 	int is_same_branch = 0;
2871 
2872 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2873 	if (err)
2874 		goto done;
2875 
2876 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2877 		is_same_branch = 1;
2878 		goto done;
2879 	}
2880 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2881 		is_same_branch = 1;
2882 		goto done;
2883 	}
2884 
2885 	err = got_commit_graph_open(&graph, "/", 1);
2886 	if (err)
2887 		goto done;
2888 
2889 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2890 	    check_cancelled, NULL);
2891 	if (err)
2892 		goto done;
2893 
2894 	for (;;) {
2895 		struct got_object_id id;
2896 
2897 		err = got_commit_graph_iter_next(&id, graph, repo,
2898 		    check_cancelled, NULL);
2899 		if (err) {
2900 			if (err->code == GOT_ERR_ITER_COMPLETED)
2901 				err = NULL;
2902 			break;
2903 		}
2904 
2905 		if (yca_id && got_object_id_cmp(&id, yca_id) == 0)
2906 			break;
2907 		if (got_object_id_cmp(&id, commit_id) == 0) {
2908 			is_same_branch = 1;
2909 			break;
2910 		}
2911 	}
2912 done:
2913 	if (graph)
2914 		got_commit_graph_close(graph);
2915 	free(head_commit_id);
2916 	if (!err && !is_same_branch)
2917 		err = got_error(GOT_ERR_ANCESTRY);
2918 	return err;
2919 }
2920 
2921 static const struct got_error *
2922 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2923 {
2924 	static char msg[512];
2925 	const char *branch_name;
2926 
2927 	if (got_ref_is_symbolic(ref))
2928 		branch_name = got_ref_get_symref_target(ref);
2929 	else
2930 		branch_name = got_ref_get_name(ref);
2931 
2932 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2933 		branch_name += 11;
2934 
2935 	snprintf(msg, sizeof(msg),
2936 	    "target commit is not contained in branch '%s'; "
2937 	    "the branch to use must be specified with -b; "
2938 	    "if necessary a new branch can be created for "
2939 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2940 	    branch_name, commit_id_str);
2941 
2942 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2943 }
2944 
2945 static const struct got_error *
2946 cmd_checkout(int argc, char *argv[])
2947 {
2948 	const struct got_error *error = NULL;
2949 	struct got_repository *repo = NULL;
2950 	struct got_reference *head_ref = NULL, *ref = NULL;
2951 	struct got_worktree *worktree = NULL;
2952 	char *repo_path = NULL;
2953 	char *worktree_path = NULL;
2954 	const char *path_prefix = "";
2955 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2956 	char *commit_id_str = NULL;
2957 	struct got_object_id *commit_id = NULL;
2958 	char *cwd = NULL;
2959 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2960 	struct got_pathlist_head paths;
2961 	struct got_checkout_progress_arg cpa;
2962 	int *pack_fds = NULL;
2963 
2964 	TAILQ_INIT(&paths);
2965 
2966 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
2967 		switch (ch) {
2968 		case 'b':
2969 			branch_name = optarg;
2970 			break;
2971 		case 'c':
2972 			commit_id_str = strdup(optarg);
2973 			if (commit_id_str == NULL)
2974 				return got_error_from_errno("strdup");
2975 			break;
2976 		case 'E':
2977 			allow_nonempty = 1;
2978 			break;
2979 		case 'p':
2980 			path_prefix = optarg;
2981 			break;
2982 		case 'q':
2983 			verbosity = -1;
2984 			break;
2985 		default:
2986 			usage_checkout();
2987 			/* NOTREACHED */
2988 		}
2989 	}
2990 
2991 	argc -= optind;
2992 	argv += optind;
2993 
2994 #ifndef PROFILE
2995 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2996 	    "unveil", NULL) == -1)
2997 		err(1, "pledge");
2998 #endif
2999 	if (argc == 1) {
3000 		char *base, *dotgit;
3001 		const char *path;
3002 		repo_path = realpath(argv[0], NULL);
3003 		if (repo_path == NULL)
3004 			return got_error_from_errno2("realpath", argv[0]);
3005 		cwd = getcwd(NULL, 0);
3006 		if (cwd == NULL) {
3007 			error = got_error_from_errno("getcwd");
3008 			goto done;
3009 		}
3010 		if (path_prefix[0])
3011 			path = path_prefix;
3012 		else
3013 			path = repo_path;
3014 		error = got_path_basename(&base, path);
3015 		if (error)
3016 			goto done;
3017 		dotgit = strstr(base, ".git");
3018 		if (dotgit)
3019 			*dotgit = '\0';
3020 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
3021 			error = got_error_from_errno("asprintf");
3022 			free(base);
3023 			goto done;
3024 		}
3025 		free(base);
3026 	} else if (argc == 2) {
3027 		repo_path = realpath(argv[0], NULL);
3028 		if (repo_path == NULL) {
3029 			error = got_error_from_errno2("realpath", argv[0]);
3030 			goto done;
3031 		}
3032 		worktree_path = realpath(argv[1], NULL);
3033 		if (worktree_path == NULL) {
3034 			if (errno != ENOENT) {
3035 				error = got_error_from_errno2("realpath",
3036 				    argv[1]);
3037 				goto done;
3038 			}
3039 			worktree_path = strdup(argv[1]);
3040 			if (worktree_path == NULL) {
3041 				error = got_error_from_errno("strdup");
3042 				goto done;
3043 			}
3044 		}
3045 	} else
3046 		usage_checkout();
3047 
3048 	got_path_strip_trailing_slashes(repo_path);
3049 	got_path_strip_trailing_slashes(worktree_path);
3050 
3051 	error = got_repo_pack_fds_open(&pack_fds);
3052 	if (error != NULL)
3053 		goto done;
3054 
3055 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
3056 	if (error != NULL)
3057 		goto done;
3058 
3059 	/* Pre-create work tree path for unveil(2) */
3060 	error = got_path_mkdir(worktree_path);
3061 	if (error) {
3062 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
3063 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3064 			goto done;
3065 		if (!allow_nonempty &&
3066 		    !got_path_dir_is_empty(worktree_path)) {
3067 			error = got_error_path(worktree_path,
3068 			    GOT_ERR_DIR_NOT_EMPTY);
3069 			goto done;
3070 		}
3071 	}
3072 
3073 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3074 	if (error)
3075 		goto done;
3076 
3077 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3078 	if (error != NULL)
3079 		goto done;
3080 
3081 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
3082 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3083 		goto done;
3084 
3085 	error = got_worktree_open(&worktree, worktree_path);
3086 	if (error != NULL)
3087 		goto done;
3088 
3089 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
3090 	    path_prefix);
3091 	if (error != NULL)
3092 		goto done;
3093 	if (!same_path_prefix) {
3094 		error = got_error(GOT_ERR_PATH_PREFIX);
3095 		goto done;
3096 	}
3097 
3098 	if (commit_id_str) {
3099 		struct got_reflist_head refs;
3100 		TAILQ_INIT(&refs);
3101 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3102 		    NULL);
3103 		if (error)
3104 			goto done;
3105 		error = got_repo_match_object_id(&commit_id, NULL,
3106 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3107 		got_ref_list_free(&refs);
3108 		if (error)
3109 			goto done;
3110 		error = check_linear_ancestry(commit_id,
3111 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3112 		if (error != NULL) {
3113 			if (error->code == GOT_ERR_ANCESTRY) {
3114 				error = checkout_ancestry_error(
3115 				    head_ref, commit_id_str);
3116 			}
3117 			goto done;
3118 		}
3119 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3120 		if (error) {
3121 			if (error->code == GOT_ERR_ANCESTRY) {
3122 				error = checkout_ancestry_error(
3123 				    head_ref, commit_id_str);
3124 			}
3125 			goto done;
3126 		}
3127 		error = got_worktree_set_base_commit_id(worktree, repo,
3128 		    commit_id);
3129 		if (error)
3130 			goto done;
3131 		/* Expand potentially abbreviated commit ID string. */
3132 		free(commit_id_str);
3133 		error = got_object_id_str(&commit_id_str, commit_id);
3134 		if (error)
3135 			goto done;
3136 	} else {
3137 		commit_id = got_object_id_dup(
3138 		    got_worktree_get_base_commit_id(worktree));
3139 		if (commit_id == NULL) {
3140 			error = got_error_from_errno("got_object_id_dup");
3141 			goto done;
3142 		}
3143 		error = got_object_id_str(&commit_id_str, commit_id);
3144 		if (error)
3145 			goto done;
3146 	}
3147 
3148 	error = got_pathlist_append(&paths, "", NULL);
3149 	if (error)
3150 		goto done;
3151 	cpa.worktree_path = worktree_path;
3152 	cpa.had_base_commit_ref_error = 0;
3153 	cpa.verbosity = verbosity;
3154 	error = got_worktree_checkout_files(worktree, &paths, repo,
3155 	    checkout_progress, &cpa, check_cancelled, NULL);
3156 	if (error != NULL)
3157 		goto done;
3158 
3159 	if (got_ref_is_symbolic(head_ref)) {
3160 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3161 		if (error)
3162 			goto done;
3163 		refname = got_ref_get_name(ref);
3164 	} else
3165 		refname = got_ref_get_name(head_ref);
3166 	printf("Checked out %s: %s\n", refname, commit_id_str);
3167 	printf("Now shut up and hack\n");
3168 	if (cpa.had_base_commit_ref_error)
3169 		show_worktree_base_ref_warning();
3170 done:
3171 	if (pack_fds) {
3172 		const struct got_error *pack_err =
3173 		    got_repo_pack_fds_close(pack_fds);
3174 		if (error == NULL)
3175 			error = pack_err;
3176 	}
3177 	if (head_ref)
3178 		got_ref_close(head_ref);
3179 	if (ref)
3180 		got_ref_close(ref);
3181 	got_pathlist_free(&paths);
3182 	free(commit_id_str);
3183 	free(commit_id);
3184 	free(repo_path);
3185 	free(worktree_path);
3186 	free(cwd);
3187 	return error;
3188 }
3189 
3190 struct got_update_progress_arg {
3191 	int did_something;
3192 	int conflicts;
3193 	int obstructed;
3194 	int not_updated;
3195 	int missing;
3196 	int not_deleted;
3197 	int unversioned;
3198 	int verbosity;
3199 };
3200 
3201 static void
3202 print_update_progress_stats(struct got_update_progress_arg *upa)
3203 {
3204 	if (!upa->did_something)
3205 		return;
3206 
3207 	if (upa->conflicts > 0)
3208 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3209 	if (upa->obstructed > 0)
3210 		printf("File paths obstructed by a non-regular file: %d\n",
3211 		    upa->obstructed);
3212 	if (upa->not_updated > 0)
3213 		printf("Files not updated because of existing merge "
3214 		    "conflicts: %d\n", upa->not_updated);
3215 }
3216 
3217 /*
3218  * The meaning of some status codes differs between merge-style operations and
3219  * update operations. For example, the ! status code means "file was missing"
3220  * if changes were merged into the work tree, and "missing file was restored"
3221  * if the work tree was updated. This function should be used by any operation
3222  * which merges changes into the work tree without updating the work tree.
3223  */
3224 static void
3225 print_merge_progress_stats(struct got_update_progress_arg *upa)
3226 {
3227 	if (!upa->did_something)
3228 		return;
3229 
3230 	if (upa->conflicts > 0)
3231 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3232 	if (upa->obstructed > 0)
3233 		printf("File paths obstructed by a non-regular file: %d\n",
3234 		    upa->obstructed);
3235 	if (upa->missing > 0)
3236 		printf("Files which had incoming changes but could not be "
3237 		    "found in the work tree: %d\n", upa->missing);
3238 	if (upa->not_deleted > 0)
3239 		printf("Files not deleted due to differences in deleted "
3240 		    "content: %d\n", upa->not_deleted);
3241 	if (upa->unversioned > 0)
3242 		printf("Files not merged because an unversioned file was "
3243 		    "found in the work tree: %d\n", upa->unversioned);
3244 }
3245 
3246 __dead static void
3247 usage_update(void)
3248 {
3249 	fprintf(stderr, "usage: %s update [-q] [-b branch] [-c commit] "
3250 	    "[path ...]\n", getprogname());
3251 	exit(1);
3252 }
3253 
3254 static const struct got_error *
3255 update_progress(void *arg, unsigned char status, const char *path)
3256 {
3257 	struct got_update_progress_arg *upa = arg;
3258 
3259 	if (status == GOT_STATUS_EXISTS ||
3260 	    status == GOT_STATUS_BASE_REF_ERR)
3261 		return NULL;
3262 
3263 	upa->did_something = 1;
3264 
3265 	/* Base commit bump happens silently. */
3266 	if (status == GOT_STATUS_BUMP_BASE)
3267 		return NULL;
3268 
3269 	if (status == GOT_STATUS_CONFLICT)
3270 		upa->conflicts++;
3271 	if (status == GOT_STATUS_OBSTRUCTED)
3272 		upa->obstructed++;
3273 	if (status == GOT_STATUS_CANNOT_UPDATE)
3274 		upa->not_updated++;
3275 	if (status == GOT_STATUS_MISSING)
3276 		upa->missing++;
3277 	if (status == GOT_STATUS_CANNOT_DELETE)
3278 		upa->not_deleted++;
3279 	if (status == GOT_STATUS_UNVERSIONED)
3280 		upa->unversioned++;
3281 
3282 	while (path[0] == '/')
3283 		path++;
3284 	if (upa->verbosity >= 0)
3285 		printf("%c  %s\n", status, path);
3286 
3287 	return NULL;
3288 }
3289 
3290 static const struct got_error *
3291 switch_head_ref(struct got_reference *head_ref,
3292     struct got_object_id *commit_id, struct got_worktree *worktree,
3293     struct got_repository *repo)
3294 {
3295 	const struct got_error *err = NULL;
3296 	char *base_id_str;
3297 	int ref_has_moved = 0;
3298 
3299 	/* Trivial case: switching between two different references. */
3300 	if (strcmp(got_ref_get_name(head_ref),
3301 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3302 		printf("Switching work tree from %s to %s\n",
3303 		    got_worktree_get_head_ref_name(worktree),
3304 		    got_ref_get_name(head_ref));
3305 		return got_worktree_set_head_ref(worktree, head_ref);
3306 	}
3307 
3308 	err = check_linear_ancestry(commit_id,
3309 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3310 	if (err) {
3311 		if (err->code != GOT_ERR_ANCESTRY)
3312 			return err;
3313 		ref_has_moved = 1;
3314 	}
3315 	if (!ref_has_moved)
3316 		return NULL;
3317 
3318 	/* Switching to a rebased branch with the same reference name. */
3319 	err = got_object_id_str(&base_id_str,
3320 	    got_worktree_get_base_commit_id(worktree));
3321 	if (err)
3322 		return err;
3323 	printf("Reference %s now points at a different branch\n",
3324 	    got_worktree_get_head_ref_name(worktree));
3325 	printf("Switching work tree from %s to %s\n", base_id_str,
3326 	    got_worktree_get_head_ref_name(worktree));
3327 	return NULL;
3328 }
3329 
3330 static const struct got_error *
3331 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3332 {
3333 	const struct got_error *err;
3334 	int in_progress;
3335 
3336 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3337 	if (err)
3338 		return err;
3339 	if (in_progress)
3340 		return got_error(GOT_ERR_REBASING);
3341 
3342 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3343 	if (err)
3344 		return err;
3345 	if (in_progress)
3346 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3347 
3348 	return NULL;
3349 }
3350 
3351 static const struct got_error *
3352 check_merge_in_progress(struct got_worktree *worktree,
3353     struct got_repository *repo)
3354 {
3355 	const struct got_error *err;
3356 	int in_progress;
3357 
3358 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3359 	if (err)
3360 		return err;
3361 	if (in_progress)
3362 		return got_error(GOT_ERR_MERGE_BUSY);
3363 
3364 	return NULL;
3365 }
3366 
3367 static const struct got_error *
3368 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3369     char *argv[], struct got_worktree *worktree)
3370 {
3371 	const struct got_error *err = NULL;
3372 	char *path;
3373 	struct got_pathlist_entry *new;
3374 	int i;
3375 
3376 	if (argc == 0) {
3377 		path = strdup("");
3378 		if (path == NULL)
3379 			return got_error_from_errno("strdup");
3380 		return got_pathlist_append(paths, path, NULL);
3381 	}
3382 
3383 	for (i = 0; i < argc; i++) {
3384 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3385 		if (err)
3386 			break;
3387 		err = got_pathlist_insert(&new, paths, path, NULL);
3388 		if (err || new == NULL /* duplicate */) {
3389 			free(path);
3390 			if (err)
3391 				break;
3392 		}
3393 	}
3394 
3395 	return err;
3396 }
3397 
3398 static const struct got_error *
3399 wrap_not_worktree_error(const struct got_error *orig_err,
3400     const char *cmdname, const char *path)
3401 {
3402 	const struct got_error *err;
3403 	struct got_repository *repo;
3404 	static char msg[512];
3405 	int *pack_fds = NULL;
3406 
3407 	err = got_repo_pack_fds_open(&pack_fds);
3408 	if (err)
3409 		return err;
3410 
3411 	err = got_repo_open(&repo, path, NULL, pack_fds);
3412 	if (err)
3413 		return orig_err;
3414 
3415 	snprintf(msg, sizeof(msg),
3416 	    "'got %s' needs a work tree in addition to a git repository\n"
3417 	    "Work trees can be checked out from this Git repository with "
3418 	    "'got checkout'.\n"
3419 	    "The got(1) manual page contains more information.", cmdname);
3420 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3421 	got_repo_close(repo);
3422 	if (pack_fds) {
3423 		const struct got_error *pack_err =
3424 		    got_repo_pack_fds_close(pack_fds);
3425 		if (err == NULL)
3426 			err = pack_err;
3427 	}
3428 	return err;
3429 }
3430 
3431 static const struct got_error *
3432 cmd_update(int argc, char *argv[])
3433 {
3434 	const struct got_error *error = NULL;
3435 	struct got_repository *repo = NULL;
3436 	struct got_worktree *worktree = NULL;
3437 	char *worktree_path = NULL;
3438 	struct got_object_id *commit_id = NULL;
3439 	char *commit_id_str = NULL;
3440 	const char *branch_name = NULL;
3441 	struct got_reference *head_ref = NULL;
3442 	struct got_pathlist_head paths;
3443 	struct got_pathlist_entry *pe;
3444 	int ch, verbosity = 0;
3445 	struct got_update_progress_arg upa;
3446 	int *pack_fds = NULL;
3447 
3448 	TAILQ_INIT(&paths);
3449 
3450 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3451 		switch (ch) {
3452 		case 'b':
3453 			branch_name = optarg;
3454 			break;
3455 		case 'c':
3456 			commit_id_str = strdup(optarg);
3457 			if (commit_id_str == NULL)
3458 				return got_error_from_errno("strdup");
3459 			break;
3460 		case 'q':
3461 			verbosity = -1;
3462 			break;
3463 		default:
3464 			usage_update();
3465 			/* NOTREACHED */
3466 		}
3467 	}
3468 
3469 	argc -= optind;
3470 	argv += optind;
3471 
3472 #ifndef PROFILE
3473 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3474 	    "unveil", NULL) == -1)
3475 		err(1, "pledge");
3476 #endif
3477 	worktree_path = getcwd(NULL, 0);
3478 	if (worktree_path == NULL) {
3479 		error = got_error_from_errno("getcwd");
3480 		goto done;
3481 	}
3482 
3483 	error = got_repo_pack_fds_open(&pack_fds);
3484 	if (error != NULL)
3485 		goto done;
3486 
3487 	error = got_worktree_open(&worktree, worktree_path);
3488 	if (error) {
3489 		if (error->code == GOT_ERR_NOT_WORKTREE)
3490 			error = wrap_not_worktree_error(error, "update",
3491 			    worktree_path);
3492 		goto done;
3493 	}
3494 
3495 	error = check_rebase_or_histedit_in_progress(worktree);
3496 	if (error)
3497 		goto done;
3498 
3499 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3500 	    NULL, pack_fds);
3501 	if (error != NULL)
3502 		goto done;
3503 
3504 	error = apply_unveil(got_repo_get_path(repo), 0,
3505 	    got_worktree_get_root_path(worktree));
3506 	if (error)
3507 		goto done;
3508 
3509 	error = check_merge_in_progress(worktree, repo);
3510 	if (error)
3511 		goto done;
3512 
3513 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3514 	if (error)
3515 		goto done;
3516 
3517 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3518 	    got_worktree_get_head_ref_name(worktree), 0);
3519 	if (error != NULL)
3520 		goto done;
3521 	if (commit_id_str == NULL) {
3522 		error = got_ref_resolve(&commit_id, repo, head_ref);
3523 		if (error != NULL)
3524 			goto done;
3525 		error = got_object_id_str(&commit_id_str, commit_id);
3526 		if (error != NULL)
3527 			goto done;
3528 	} else {
3529 		struct got_reflist_head refs;
3530 		TAILQ_INIT(&refs);
3531 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3532 		    NULL);
3533 		if (error)
3534 			goto done;
3535 		error = got_repo_match_object_id(&commit_id, NULL,
3536 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3537 		got_ref_list_free(&refs);
3538 		free(commit_id_str);
3539 		commit_id_str = NULL;
3540 		if (error)
3541 			goto done;
3542 		error = got_object_id_str(&commit_id_str, commit_id);
3543 		if (error)
3544 			goto done;
3545 	}
3546 
3547 	if (branch_name) {
3548 		struct got_object_id *head_commit_id;
3549 		TAILQ_FOREACH(pe, &paths, entry) {
3550 			if (pe->path_len == 0)
3551 				continue;
3552 			error = got_error_msg(GOT_ERR_BAD_PATH,
3553 			    "switching between branches requires that "
3554 			    "the entire work tree gets updated");
3555 			goto done;
3556 		}
3557 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3558 		if (error)
3559 			goto done;
3560 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3561 		    repo);
3562 		free(head_commit_id);
3563 		if (error != NULL)
3564 			goto done;
3565 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3566 		if (error)
3567 			goto done;
3568 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3569 		if (error)
3570 			goto done;
3571 	} else {
3572 		error = check_linear_ancestry(commit_id,
3573 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3574 		if (error != NULL) {
3575 			if (error->code == GOT_ERR_ANCESTRY)
3576 				error = got_error(GOT_ERR_BRANCH_MOVED);
3577 			goto done;
3578 		}
3579 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3580 		if (error)
3581 			goto done;
3582 	}
3583 
3584 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3585 	    commit_id) != 0) {
3586 		error = got_worktree_set_base_commit_id(worktree, repo,
3587 		    commit_id);
3588 		if (error)
3589 			goto done;
3590 	}
3591 
3592 	memset(&upa, 0, sizeof(upa));
3593 	upa.verbosity = verbosity;
3594 	error = got_worktree_checkout_files(worktree, &paths, repo,
3595 	    update_progress, &upa, check_cancelled, NULL);
3596 	if (error != NULL)
3597 		goto done;
3598 
3599 	if (upa.did_something) {
3600 		printf("Updated to %s: %s\n",
3601 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3602 	} else
3603 		printf("Already up-to-date\n");
3604 
3605 	print_update_progress_stats(&upa);
3606 done:
3607 	if (pack_fds) {
3608 		const struct got_error *pack_err =
3609 		    got_repo_pack_fds_close(pack_fds);
3610 		if (error == NULL)
3611 			error = pack_err;
3612 	}
3613 	free(worktree_path);
3614 	TAILQ_FOREACH(pe, &paths, entry)
3615 		free((char *)pe->path);
3616 	got_pathlist_free(&paths);
3617 	free(commit_id);
3618 	free(commit_id_str);
3619 	return error;
3620 }
3621 
3622 static const struct got_error *
3623 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3624     const char *path, int diff_context, int ignore_whitespace,
3625     int force_text_diff, struct got_repository *repo, FILE *outfile)
3626 {
3627 	const struct got_error *err = NULL;
3628 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3629 	FILE *f1 = NULL, *f2 = NULL;
3630 	int fd1 = -1, fd2 = -1;
3631 
3632 	fd1 = got_opentempfd();
3633 	if (fd1 == -1)
3634 		return got_error_from_errno("got_opentempfd");
3635 	fd2 = got_opentempfd();
3636 	if (fd2 == -1) {
3637 		err = got_error_from_errno("got_opentempfd");
3638 		goto done;
3639 	}
3640 
3641 	if (blob_id1) {
3642 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3643 		    fd1);
3644 		if (err)
3645 			goto done;
3646 	}
3647 
3648 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3649 	if (err)
3650 		goto done;
3651 
3652 	f1 = got_opentemp();
3653 	if (f1 == NULL) {
3654 		err = got_error_from_errno("got_opentemp");
3655 		goto done;
3656 	}
3657 	f2 = got_opentemp();
3658 	if (f2 == NULL) {
3659 		err = got_error_from_errno("got_opentemp");
3660 		goto done;
3661 	}
3662 
3663 	while (path[0] == '/')
3664 		path++;
3665 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3666 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3667 	    force_text_diff, outfile);
3668 done:
3669 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3670 		err = got_error_from_errno("close");
3671 	if (blob1)
3672 		got_object_blob_close(blob1);
3673 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3674 		err = got_error_from_errno("close");
3675 	got_object_blob_close(blob2);
3676 	if (f1 && fclose(f1) == EOF && err == NULL)
3677 		err = got_error_from_errno("fclose");
3678 	if (f2 && fclose(f2) == EOF && err == NULL)
3679 		err = got_error_from_errno("fclose");
3680 	return err;
3681 }
3682 
3683 static const struct got_error *
3684 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3685     const char *path, int diff_context, int ignore_whitespace,
3686     int force_text_diff, struct got_repository *repo, FILE *outfile)
3687 {
3688 	const struct got_error *err = NULL;
3689 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3690 	struct got_diff_blob_output_unidiff_arg arg;
3691 	FILE *f1 = NULL, *f2 = NULL;
3692 	int fd1 = -1, fd2 = -1;
3693 
3694 	if (tree_id1) {
3695 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3696 		if (err)
3697 			goto done;
3698 		fd1 = got_opentempfd();
3699 		if (fd1 == -1) {
3700 			err = got_error_from_errno("got_opentempfd");
3701 			goto done;
3702 		}
3703 	}
3704 
3705 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3706 	if (err)
3707 		goto done;
3708 
3709 	f1 = got_opentemp();
3710 	if (f1 == NULL) {
3711 		err = got_error_from_errno("got_opentemp");
3712 		goto done;
3713 	}
3714 
3715 	f2 = got_opentemp();
3716 	if (f2 == NULL) {
3717 		err = got_error_from_errno("got_opentemp");
3718 		goto done;
3719 	}
3720 	fd2 = got_opentempfd();
3721 	if (fd2 == -1) {
3722 		err = got_error_from_errno("got_opentempfd");
3723 		goto done;
3724 	}
3725 	arg.diff_context = diff_context;
3726 	arg.ignore_whitespace = ignore_whitespace;
3727 	arg.force_text_diff = force_text_diff;
3728 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3729 	arg.outfile = outfile;
3730 	arg.lines = NULL;
3731 	arg.nlines = 0;
3732 	while (path[0] == '/')
3733 		path++;
3734 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3735 	    got_diff_blob_output_unidiff, &arg, 1);
3736 done:
3737 	if (tree1)
3738 		got_object_tree_close(tree1);
3739 	if (tree2)
3740 		got_object_tree_close(tree2);
3741 	if (f1 && fclose(f1) == EOF && err == NULL)
3742 		err = got_error_from_errno("fclose");
3743 	if (f2 && fclose(f2) == EOF && err == NULL)
3744 		err = got_error_from_errno("fclose");
3745 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3746 		err = got_error_from_errno("close");
3747 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3748 		err = got_error_from_errno("close");
3749 	return err;
3750 }
3751 
3752 static const struct got_error *
3753 get_changed_paths(struct got_pathlist_head *paths,
3754     struct got_commit_object *commit, struct got_repository *repo)
3755 {
3756 	const struct got_error *err = NULL;
3757 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3758 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3759 	struct got_object_qid *qid;
3760 
3761 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3762 	if (qid != NULL) {
3763 		struct got_commit_object *pcommit;
3764 		err = got_object_open_as_commit(&pcommit, repo,
3765 		    &qid->id);
3766 		if (err)
3767 			return err;
3768 
3769 		tree_id1 = got_object_id_dup(
3770 		    got_object_commit_get_tree_id(pcommit));
3771 		if (tree_id1 == NULL) {
3772 			got_object_commit_close(pcommit);
3773 			return got_error_from_errno("got_object_id_dup");
3774 		}
3775 		got_object_commit_close(pcommit);
3776 
3777 	}
3778 
3779 	if (tree_id1) {
3780 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3781 		if (err)
3782 			goto done;
3783 	}
3784 
3785 	tree_id2 = got_object_commit_get_tree_id(commit);
3786 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3787 	if (err)
3788 		goto done;
3789 
3790 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
3791 	    got_diff_tree_collect_changed_paths, paths, 0);
3792 done:
3793 	if (tree1)
3794 		got_object_tree_close(tree1);
3795 	if (tree2)
3796 		got_object_tree_close(tree2);
3797 	free(tree_id1);
3798 	return err;
3799 }
3800 
3801 static const struct got_error *
3802 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3803     const char *path, int diff_context, struct got_repository *repo,
3804     FILE *outfile)
3805 {
3806 	const struct got_error *err = NULL;
3807 	struct got_commit_object *pcommit = NULL;
3808 	char *id_str1 = NULL, *id_str2 = NULL;
3809 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3810 	struct got_object_qid *qid;
3811 
3812 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3813 	if (qid != NULL) {
3814 		err = got_object_open_as_commit(&pcommit, repo,
3815 		    &qid->id);
3816 		if (err)
3817 			return err;
3818 		err = got_object_id_str(&id_str1, &qid->id);
3819 		if (err)
3820 			goto done;
3821 	}
3822 
3823 	err = got_object_id_str(&id_str2, id);
3824 	if (err)
3825 		goto done;
3826 
3827 	if (path && path[0] != '\0') {
3828 		int obj_type;
3829 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3830 		if (err)
3831 			goto done;
3832 		if (pcommit) {
3833 			err = got_object_id_by_path(&obj_id1, repo,
3834 			    pcommit, path);
3835 			if (err) {
3836 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3837 					free(obj_id2);
3838 					goto done;
3839 				}
3840 			}
3841 		}
3842 		err = got_object_get_type(&obj_type, repo, obj_id2);
3843 		if (err) {
3844 			free(obj_id2);
3845 			goto done;
3846 		}
3847 		fprintf(outfile,
3848 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3849 		fprintf(outfile, "commit - %s\n",
3850 		    id_str1 ? id_str1 : "/dev/null");
3851 		fprintf(outfile, "commit + %s\n", id_str2);
3852 		switch (obj_type) {
3853 		case GOT_OBJ_TYPE_BLOB:
3854 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3855 			    0, 0, repo, outfile);
3856 			break;
3857 		case GOT_OBJ_TYPE_TREE:
3858 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3859 			    0, 0, repo, outfile);
3860 			break;
3861 		default:
3862 			err = got_error(GOT_ERR_OBJ_TYPE);
3863 			break;
3864 		}
3865 		free(obj_id1);
3866 		free(obj_id2);
3867 	} else {
3868 		obj_id2 = got_object_commit_get_tree_id(commit);
3869 		if (pcommit)
3870 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3871 		fprintf(outfile,
3872 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3873 		fprintf(outfile, "commit - %s\n",
3874 		    id_str1 ? id_str1 : "/dev/null");
3875 		fprintf(outfile, "commit + %s\n", id_str2);
3876 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3877 		    repo, outfile);
3878 	}
3879 done:
3880 	free(id_str1);
3881 	free(id_str2);
3882 	if (pcommit)
3883 		got_object_commit_close(pcommit);
3884 	return err;
3885 }
3886 
3887 static char *
3888 get_datestr(time_t *time, char *datebuf)
3889 {
3890 	struct tm mytm, *tm;
3891 	char *p, *s;
3892 
3893 	tm = gmtime_r(time, &mytm);
3894 	if (tm == NULL)
3895 		return NULL;
3896 	s = asctime_r(tm, datebuf);
3897 	if (s == NULL)
3898 		return NULL;
3899 	p = strchr(s, '\n');
3900 	if (p)
3901 		*p = '\0';
3902 	return s;
3903 }
3904 
3905 static const struct got_error *
3906 match_commit(int *have_match, struct got_object_id *id,
3907     struct got_commit_object *commit, regex_t *regex)
3908 {
3909 	const struct got_error *err = NULL;
3910 	regmatch_t regmatch;
3911 	char *id_str = NULL, *logmsg = NULL;
3912 
3913 	*have_match = 0;
3914 
3915 	err = got_object_id_str(&id_str, id);
3916 	if (err)
3917 		return err;
3918 
3919 	err = got_object_commit_get_logmsg(&logmsg, commit);
3920 	if (err)
3921 		goto done;
3922 
3923 	if (regexec(regex, got_object_commit_get_author(commit), 1,
3924 	    &regmatch, 0) == 0 ||
3925 	    regexec(regex, got_object_commit_get_committer(commit), 1,
3926 	    &regmatch, 0) == 0 ||
3927 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
3928 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3929 		*have_match = 1;
3930 done:
3931 	free(id_str);
3932 	free(logmsg);
3933 	return err;
3934 }
3935 
3936 static void
3937 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3938     regex_t *regex)
3939 {
3940 	regmatch_t regmatch;
3941 	struct got_pathlist_entry *pe;
3942 
3943 	*have_match = 0;
3944 
3945 	TAILQ_FOREACH(pe, changed_paths, entry) {
3946 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3947 			*have_match = 1;
3948 			break;
3949 		}
3950 	}
3951 }
3952 
3953 static const struct got_error *
3954 match_patch(int *have_match, struct got_commit_object *commit,
3955     struct got_object_id *id, const char *path, int diff_context,
3956     struct got_repository *repo, regex_t *regex, FILE *f)
3957 {
3958 	const struct got_error *err = NULL;
3959 	char *line = NULL;
3960 	size_t linesize = 0;
3961 	regmatch_t regmatch;
3962 
3963 	*have_match = 0;
3964 
3965 	err = got_opentemp_truncate(f);
3966 	if (err)
3967 		return err;
3968 
3969 	err = print_patch(commit, id, path, diff_context, repo, f);
3970 	if (err)
3971 		goto done;
3972 
3973 	if (fseeko(f, 0L, SEEK_SET) == -1) {
3974 		err = got_error_from_errno("fseeko");
3975 		goto done;
3976 	}
3977 
3978 	while (getline(&line, &linesize, f) != -1) {
3979 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
3980 			*have_match = 1;
3981 			break;
3982 		}
3983 	}
3984 done:
3985 	free(line);
3986 	return err;
3987 }
3988 
3989 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3990 
3991 static const struct got_error*
3992 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3993     struct got_object_id *id, struct got_repository *repo,
3994     int local_only)
3995 {
3996 	static const struct got_error *err = NULL;
3997 	struct got_reflist_entry *re;
3998 	char *s;
3999 	const char *name;
4000 
4001 	*refs_str = NULL;
4002 
4003 	TAILQ_FOREACH(re, refs, entry) {
4004 		struct got_tag_object *tag = NULL;
4005 		struct got_object_id *ref_id;
4006 		int cmp;
4007 
4008 		name = got_ref_get_name(re->ref);
4009 		if (strcmp(name, GOT_REF_HEAD) == 0)
4010 			continue;
4011 		if (strncmp(name, "refs/", 5) == 0)
4012 			name += 5;
4013 		if (strncmp(name, "got/", 4) == 0)
4014 			continue;
4015 		if (strncmp(name, "heads/", 6) == 0)
4016 			name += 6;
4017 		if (strncmp(name, "remotes/", 8) == 0) {
4018 			if (local_only)
4019 				continue;
4020 			name += 8;
4021 			s = strstr(name, "/" GOT_REF_HEAD);
4022 			if (s != NULL && s[strlen(s)] == '\0')
4023 				continue;
4024 		}
4025 		err = got_ref_resolve(&ref_id, repo, re->ref);
4026 		if (err)
4027 			break;
4028 		if (strncmp(name, "tags/", 5) == 0) {
4029 			err = got_object_open_as_tag(&tag, repo, ref_id);
4030 			if (err) {
4031 				if (err->code != GOT_ERR_OBJ_TYPE) {
4032 					free(ref_id);
4033 					break;
4034 				}
4035 				/* Ref points at something other than a tag. */
4036 				err = NULL;
4037 				tag = NULL;
4038 			}
4039 		}
4040 		cmp = got_object_id_cmp(tag ?
4041 		    got_object_tag_get_object_id(tag) : ref_id, id);
4042 		free(ref_id);
4043 		if (tag)
4044 			got_object_tag_close(tag);
4045 		if (cmp != 0)
4046 			continue;
4047 		s = *refs_str;
4048 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
4049 		    s ? ", " : "", name) == -1) {
4050 			err = got_error_from_errno("asprintf");
4051 			free(s);
4052 			*refs_str = NULL;
4053 			break;
4054 		}
4055 		free(s);
4056 	}
4057 
4058 	return err;
4059 }
4060 
4061 static const struct got_error *
4062 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4063     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4064 {
4065 	const struct got_error *err = NULL;
4066 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4067 	char *comma, *s, *nl;
4068 	struct got_reflist_head *refs;
4069 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4070 	struct tm tm;
4071 	time_t committer_time;
4072 
4073 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4074 	if (refs) {
4075 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4076 		if (err)
4077 			return err;
4078 
4079 		/* Display the first matching ref only. */
4080 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4081 			*comma = '\0';
4082 	}
4083 
4084 	if (ref_str == NULL) {
4085 		err = got_object_id_str(&id_str, id);
4086 		if (err)
4087 			return err;
4088 	}
4089 
4090 	committer_time = got_object_commit_get_committer_time(commit);
4091 	if (gmtime_r(&committer_time, &tm) == NULL) {
4092 		err = got_error_from_errno("gmtime_r");
4093 		goto done;
4094 	}
4095 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
4096 		err = got_error(GOT_ERR_NO_SPACE);
4097 		goto done;
4098 	}
4099 
4100 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4101 	if (err)
4102 		goto done;
4103 
4104 	s = logmsg0;
4105 	while (isspace((unsigned char)s[0]))
4106 		s++;
4107 
4108 	nl = strchr(s, '\n');
4109 	if (nl) {
4110 		*nl = '\0';
4111 	}
4112 
4113 	if (ref_str)
4114 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4115 	else
4116 		printf("%s%.7s %s\n", datebuf, id_str, s);
4117 
4118 	if (fflush(stdout) != 0 && err == NULL)
4119 		err = got_error_from_errno("fflush");
4120 done:
4121 	free(id_str);
4122 	free(ref_str);
4123 	free(logmsg0);
4124 	return err;
4125 }
4126 
4127 static const struct got_error *
4128 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4129     struct got_repository *repo, const char *path,
4130     struct got_pathlist_head *changed_paths, int show_patch,
4131     int diff_context, struct got_reflist_object_id_map *refs_idmap,
4132     const char *custom_refs_str)
4133 {
4134 	const struct got_error *err = NULL;
4135 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4136 	char datebuf[26];
4137 	time_t committer_time;
4138 	const char *author, *committer;
4139 	char *refs_str = NULL;
4140 
4141 	err = got_object_id_str(&id_str, id);
4142 	if (err)
4143 		return err;
4144 
4145 	if (custom_refs_str == NULL) {
4146 		struct got_reflist_head *refs;
4147 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4148 		if (refs) {
4149 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4150 			if (err)
4151 				goto done;
4152 		}
4153 	}
4154 
4155 	printf(GOT_COMMIT_SEP_STR);
4156 	if (custom_refs_str)
4157 		printf("commit %s (%s)\n", id_str, custom_refs_str);
4158 	else
4159 		printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
4160 		    refs_str ? refs_str : "", refs_str ? ")" : "");
4161 	free(id_str);
4162 	id_str = NULL;
4163 	free(refs_str);
4164 	refs_str = NULL;
4165 	printf("from: %s\n", got_object_commit_get_author(commit));
4166 	committer_time = got_object_commit_get_committer_time(commit);
4167 	datestr = get_datestr(&committer_time, datebuf);
4168 	if (datestr)
4169 		printf("date: %s UTC\n", datestr);
4170 	author = got_object_commit_get_author(commit);
4171 	committer = got_object_commit_get_committer(commit);
4172 	if (strcmp(author, committer) != 0)
4173 		printf("via: %s\n", committer);
4174 	if (got_object_commit_get_nparents(commit) > 1) {
4175 		const struct got_object_id_queue *parent_ids;
4176 		struct got_object_qid *qid;
4177 		int n = 1;
4178 		parent_ids = got_object_commit_get_parent_ids(commit);
4179 		STAILQ_FOREACH(qid, parent_ids, entry) {
4180 			err = got_object_id_str(&id_str, &qid->id);
4181 			if (err)
4182 				goto done;
4183 			printf("parent %d: %s\n", n++, id_str);
4184 			free(id_str);
4185 			id_str = NULL;
4186 		}
4187 	}
4188 
4189 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4190 	if (err)
4191 		goto done;
4192 
4193 	logmsg = logmsg0;
4194 	do {
4195 		line = strsep(&logmsg, "\n");
4196 		if (line)
4197 			printf(" %s\n", line);
4198 	} while (line);
4199 	free(logmsg0);
4200 
4201 	if (changed_paths) {
4202 		struct got_pathlist_entry *pe;
4203 		TAILQ_FOREACH(pe, changed_paths, entry) {
4204 			struct got_diff_changed_path *cp = pe->data;
4205 			printf(" %c  %s\n", cp->status, pe->path);
4206 		}
4207 		printf("\n");
4208 	}
4209 	if (show_patch) {
4210 		err = print_patch(commit, id, path, diff_context, repo, stdout);
4211 		if (err == 0)
4212 			printf("\n");
4213 	}
4214 
4215 	if (fflush(stdout) != 0 && err == NULL)
4216 		err = got_error_from_errno("fflush");
4217 done:
4218 	free(id_str);
4219 	free(refs_str);
4220 	return err;
4221 }
4222 
4223 static const struct got_error *
4224 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4225     struct got_repository *repo, const char *path, int show_changed_paths,
4226     int show_patch, const char *search_pattern, int diff_context, int limit,
4227     int log_branches, int reverse_display_order,
4228     struct got_reflist_object_id_map *refs_idmap, int one_line,
4229     FILE *tmpfile)
4230 {
4231 	const struct got_error *err;
4232 	struct got_commit_graph *graph;
4233 	regex_t regex;
4234 	int have_match;
4235 	struct got_object_id_queue reversed_commits;
4236 	struct got_object_qid *qid;
4237 	struct got_commit_object *commit;
4238 	struct got_pathlist_head changed_paths;
4239 	struct got_pathlist_entry *pe;
4240 
4241 	STAILQ_INIT(&reversed_commits);
4242 	TAILQ_INIT(&changed_paths);
4243 
4244 	if (search_pattern && regcomp(&regex, search_pattern,
4245 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4246 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4247 
4248 	err = got_commit_graph_open(&graph, path, !log_branches);
4249 	if (err)
4250 		return err;
4251 	err = got_commit_graph_iter_start(graph, root_id, repo,
4252 	    check_cancelled, NULL);
4253 	if (err)
4254 		goto done;
4255 	for (;;) {
4256 		struct got_object_id id;
4257 
4258 		if (sigint_received || sigpipe_received)
4259 			break;
4260 
4261 		err = got_commit_graph_iter_next(&id, graph, repo,
4262 		    check_cancelled, NULL);
4263 		if (err) {
4264 			if (err->code == GOT_ERR_ITER_COMPLETED)
4265 				err = NULL;
4266 			break;
4267 		}
4268 
4269 		err = got_object_open_as_commit(&commit, repo, &id);
4270 		if (err)
4271 			break;
4272 
4273 		if (show_changed_paths && !reverse_display_order) {
4274 			err = get_changed_paths(&changed_paths, commit, repo);
4275 			if (err)
4276 				break;
4277 		}
4278 
4279 		if (search_pattern) {
4280 			err = match_commit(&have_match, &id, commit, &regex);
4281 			if (err) {
4282 				got_object_commit_close(commit);
4283 				break;
4284 			}
4285 			if (have_match == 0 && show_changed_paths)
4286 				match_changed_paths(&have_match,
4287 				    &changed_paths, &regex);
4288 			if (have_match == 0 && show_patch) {
4289 				err = match_patch(&have_match, commit, &id,
4290 				    path, diff_context, repo, &regex,
4291 				    tmpfile);
4292 				if (err)
4293 					break;
4294 			}
4295 			if (have_match == 0) {
4296 				got_object_commit_close(commit);
4297 				TAILQ_FOREACH(pe, &changed_paths, entry) {
4298 					free((char *)pe->path);
4299 					free(pe->data);
4300 				}
4301 				got_pathlist_free(&changed_paths);
4302 				continue;
4303 			}
4304 		}
4305 
4306 		if (reverse_display_order) {
4307 			err = got_object_qid_alloc(&qid, &id);
4308 			if (err)
4309 				break;
4310 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4311 			got_object_commit_close(commit);
4312 		} else {
4313 			if (one_line)
4314 				err = print_commit_oneline(commit, &id,
4315 				    repo, refs_idmap);
4316 			else
4317 				err = print_commit(commit, &id, repo, path,
4318 				    show_changed_paths ? &changed_paths : NULL,
4319 				    show_patch, diff_context, refs_idmap, NULL);
4320 			got_object_commit_close(commit);
4321 			if (err)
4322 				break;
4323 		}
4324 		if ((limit && --limit == 0) ||
4325 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
4326 			break;
4327 
4328 		TAILQ_FOREACH(pe, &changed_paths, entry) {
4329 			free((char *)pe->path);
4330 			free(pe->data);
4331 		}
4332 		got_pathlist_free(&changed_paths);
4333 	}
4334 	if (reverse_display_order) {
4335 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4336 			err = got_object_open_as_commit(&commit, repo,
4337 			    &qid->id);
4338 			if (err)
4339 				break;
4340 			if (show_changed_paths) {
4341 				err = get_changed_paths(&changed_paths,
4342 				    commit, repo);
4343 				if (err)
4344 					break;
4345 			}
4346 			if (one_line)
4347 				err = print_commit_oneline(commit, &qid->id,
4348 				    repo, refs_idmap);
4349 			else
4350 				err = print_commit(commit, &qid->id, repo, path,
4351 				    show_changed_paths ? &changed_paths : NULL,
4352 				    show_patch, diff_context, refs_idmap, NULL);
4353 			got_object_commit_close(commit);
4354 			if (err)
4355 				break;
4356 			TAILQ_FOREACH(pe, &changed_paths, entry) {
4357 				free((char *)pe->path);
4358 				free(pe->data);
4359 			}
4360 			got_pathlist_free(&changed_paths);
4361 		}
4362 	}
4363 done:
4364 	while (!STAILQ_EMPTY(&reversed_commits)) {
4365 		qid = STAILQ_FIRST(&reversed_commits);
4366 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4367 		got_object_qid_free(qid);
4368 	}
4369 	TAILQ_FOREACH(pe, &changed_paths, entry) {
4370 		free((char *)pe->path);
4371 		free(pe->data);
4372 	}
4373 	got_pathlist_free(&changed_paths);
4374 	if (search_pattern)
4375 		regfree(&regex);
4376 	got_commit_graph_close(graph);
4377 	return err;
4378 }
4379 
4380 __dead static void
4381 usage_log(void)
4382 {
4383 	fprintf(stderr, "usage: %s log [-bPpRs] [-C number] [-c commit] [-l N] "
4384 	    "[-r repository-path] [-S search-pattern] [-x commit] [path]\n",
4385 	    getprogname());
4386 	exit(1);
4387 }
4388 
4389 static int
4390 get_default_log_limit(void)
4391 {
4392 	const char *got_default_log_limit;
4393 	long long n;
4394 	const char *errstr;
4395 
4396 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4397 	if (got_default_log_limit == NULL)
4398 		return 0;
4399 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4400 	if (errstr != NULL)
4401 		return 0;
4402 	return n;
4403 }
4404 
4405 static const struct got_error *
4406 cmd_log(int argc, char *argv[])
4407 {
4408 	const struct got_error *error;
4409 	struct got_repository *repo = NULL;
4410 	struct got_worktree *worktree = NULL;
4411 	struct got_object_id *start_id = NULL, *end_id = NULL;
4412 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4413 	const char *start_commit = NULL, *end_commit = NULL;
4414 	const char *search_pattern = NULL;
4415 	int diff_context = -1, ch;
4416 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4417 	int reverse_display_order = 0, one_line = 0;
4418 	const char *errstr;
4419 	struct got_reflist_head refs;
4420 	struct got_reflist_object_id_map *refs_idmap = NULL;
4421 	FILE *tmpfile = NULL;
4422 	int *pack_fds = NULL;
4423 
4424 	TAILQ_INIT(&refs);
4425 
4426 #ifndef PROFILE
4427 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4428 	    NULL)
4429 	    == -1)
4430 		err(1, "pledge");
4431 #endif
4432 
4433 	limit = get_default_log_limit();
4434 
4435 	while ((ch = getopt(argc, argv, "bC:c:l:PpRr:S:sx:")) != -1) {
4436 		switch (ch) {
4437 		case 'b':
4438 			log_branches = 1;
4439 			break;
4440 		case 'C':
4441 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4442 			    &errstr);
4443 			if (errstr != NULL)
4444 				errx(1, "number of context lines is %s: %s",
4445 				    errstr, optarg);
4446 			break;
4447 		case 'c':
4448 			start_commit = optarg;
4449 			break;
4450 		case 'l':
4451 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4452 			if (errstr != NULL)
4453 				errx(1, "number of commits is %s: %s",
4454 				    errstr, optarg);
4455 			break;
4456 		case 'P':
4457 			show_changed_paths = 1;
4458 			break;
4459 		case 'p':
4460 			show_patch = 1;
4461 			break;
4462 		case 'R':
4463 			reverse_display_order = 1;
4464 			break;
4465 		case 'r':
4466 			repo_path = realpath(optarg, NULL);
4467 			if (repo_path == NULL)
4468 				return got_error_from_errno2("realpath",
4469 				    optarg);
4470 			got_path_strip_trailing_slashes(repo_path);
4471 			break;
4472 		case 'S':
4473 			search_pattern = optarg;
4474 			break;
4475 		case 's':
4476 			one_line = 1;
4477 			break;
4478 		case 'x':
4479 			end_commit = optarg;
4480 			break;
4481 		default:
4482 			usage_log();
4483 			/* NOTREACHED */
4484 		}
4485 	}
4486 
4487 	argc -= optind;
4488 	argv += optind;
4489 
4490 	if (diff_context == -1)
4491 		diff_context = 3;
4492 	else if (!show_patch)
4493 		errx(1, "-C requires -p");
4494 
4495 	if (one_line && (show_patch || show_changed_paths))
4496 		errx(1, "cannot use -s with -p or -P");
4497 
4498 	cwd = getcwd(NULL, 0);
4499 	if (cwd == NULL) {
4500 		error = got_error_from_errno("getcwd");
4501 		goto done;
4502 	}
4503 
4504 	error = got_repo_pack_fds_open(&pack_fds);
4505 	if (error != NULL)
4506 		goto done;
4507 
4508 	if (repo_path == NULL) {
4509 		error = got_worktree_open(&worktree, cwd);
4510 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4511 			goto done;
4512 		error = NULL;
4513 	}
4514 
4515 	if (argc == 1) {
4516 		if (worktree) {
4517 			error = got_worktree_resolve_path(&path, worktree,
4518 			    argv[0]);
4519 			if (error)
4520 				goto done;
4521 		} else {
4522 			path = strdup(argv[0]);
4523 			if (path == NULL) {
4524 				error = got_error_from_errno("strdup");
4525 				goto done;
4526 			}
4527 		}
4528 	} else if (argc != 0)
4529 		usage_log();
4530 
4531 	if (repo_path == NULL) {
4532 		repo_path = worktree ?
4533 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4534 	}
4535 	if (repo_path == NULL) {
4536 		error = got_error_from_errno("strdup");
4537 		goto done;
4538 	}
4539 
4540 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4541 	if (error != NULL)
4542 		goto done;
4543 
4544 	error = apply_unveil(got_repo_get_path(repo), 1,
4545 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4546 	if (error)
4547 		goto done;
4548 
4549 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4550 	if (error)
4551 		goto done;
4552 
4553 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4554 	if (error)
4555 		goto done;
4556 
4557 	if (start_commit == NULL) {
4558 		struct got_reference *head_ref;
4559 		struct got_commit_object *commit = NULL;
4560 		error = got_ref_open(&head_ref, repo,
4561 		    worktree ? got_worktree_get_head_ref_name(worktree)
4562 		    : GOT_REF_HEAD, 0);
4563 		if (error != NULL)
4564 			goto done;
4565 		error = got_ref_resolve(&start_id, repo, head_ref);
4566 		got_ref_close(head_ref);
4567 		if (error != NULL)
4568 			goto done;
4569 		error = got_object_open_as_commit(&commit, repo,
4570 		    start_id);
4571 		if (error != NULL)
4572 			goto done;
4573 		got_object_commit_close(commit);
4574 	} else {
4575 		error = got_repo_match_object_id(&start_id, NULL,
4576 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4577 		if (error != NULL)
4578 			goto done;
4579 	}
4580 	if (end_commit != NULL) {
4581 		error = got_repo_match_object_id(&end_id, NULL,
4582 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4583 		if (error != NULL)
4584 			goto done;
4585 	}
4586 
4587 	if (worktree) {
4588 		/*
4589 		 * If a path was specified on the command line it was resolved
4590 		 * to a path in the work tree above. Prepend the work tree's
4591 		 * path prefix to obtain the corresponding in-repository path.
4592 		 */
4593 		if (path) {
4594 			const char *prefix;
4595 			prefix = got_worktree_get_path_prefix(worktree);
4596 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4597 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4598 				error = got_error_from_errno("asprintf");
4599 				goto done;
4600 			}
4601 		}
4602 	} else
4603 		error = got_repo_map_path(&in_repo_path, repo,
4604 		    path ? path : "");
4605 	if (error != NULL)
4606 		goto done;
4607 	if (in_repo_path) {
4608 		free(path);
4609 		path = in_repo_path;
4610 	}
4611 
4612 	if (worktree) {
4613 		/* Release work tree lock. */
4614 		got_worktree_close(worktree);
4615 		worktree = NULL;
4616 	}
4617 
4618 	if (search_pattern && show_patch) {
4619 		tmpfile = got_opentemp();
4620 		if (tmpfile == NULL) {
4621 			error = got_error_from_errno("got_opentemp");
4622 			goto done;
4623 		}
4624 	}
4625 
4626 	error = print_commits(start_id, end_id, repo, path ? path : "",
4627 	    show_changed_paths, show_patch, search_pattern, diff_context,
4628 	    limit, log_branches, reverse_display_order, refs_idmap, one_line,
4629 	    tmpfile);
4630 done:
4631 	free(path);
4632 	free(repo_path);
4633 	free(cwd);
4634 	if (worktree)
4635 		got_worktree_close(worktree);
4636 	if (repo) {
4637 		const struct got_error *close_err = got_repo_close(repo);
4638 		if (error == NULL)
4639 			error = close_err;
4640 	}
4641 	if (pack_fds) {
4642 		const struct got_error *pack_err =
4643 		    got_repo_pack_fds_close(pack_fds);
4644 		if (error == NULL)
4645 			error = pack_err;
4646 	}
4647 	if (refs_idmap)
4648 		got_reflist_object_id_map_free(refs_idmap);
4649 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4650 		error = got_error_from_errno("fclose");
4651 	got_ref_list_free(&refs);
4652 	return error;
4653 }
4654 
4655 __dead static void
4656 usage_diff(void)
4657 {
4658 	fprintf(stderr, "usage: %s diff [-aPsw] [-C number] [-c commit] "
4659 	    "[-r repository-path] [object1 object2 | path ...]\n",
4660 	    getprogname());
4661 	exit(1);
4662 }
4663 
4664 struct print_diff_arg {
4665 	struct got_repository *repo;
4666 	struct got_worktree *worktree;
4667 	int diff_context;
4668 	const char *id_str;
4669 	int header_shown;
4670 	int diff_staged;
4671 	enum got_diff_algorithm diff_algo;
4672 	int ignore_whitespace;
4673 	int force_text_diff;
4674 	FILE *f1;
4675 	FILE *f2;
4676 };
4677 
4678 /*
4679  * Create a file which contains the target path of a symlink so we can feed
4680  * it as content to the diff engine.
4681  */
4682 static const struct got_error *
4683 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4684     const char *abspath)
4685 {
4686 	const struct got_error *err = NULL;
4687 	char target_path[PATH_MAX];
4688 	ssize_t target_len, outlen;
4689 
4690 	*fd = -1;
4691 
4692 	if (dirfd != -1) {
4693 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4694 		if (target_len == -1)
4695 			return got_error_from_errno2("readlinkat", abspath);
4696 	} else {
4697 		target_len = readlink(abspath, target_path, PATH_MAX);
4698 		if (target_len == -1)
4699 			return got_error_from_errno2("readlink", abspath);
4700 	}
4701 
4702 	*fd = got_opentempfd();
4703 	if (*fd == -1)
4704 		return got_error_from_errno("got_opentempfd");
4705 
4706 	outlen = write(*fd, target_path, target_len);
4707 	if (outlen == -1) {
4708 		err = got_error_from_errno("got_opentempfd");
4709 		goto done;
4710 	}
4711 
4712 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4713 		err = got_error_from_errno2("lseek", abspath);
4714 		goto done;
4715 	}
4716 done:
4717 	if (err) {
4718 		close(*fd);
4719 		*fd = -1;
4720 	}
4721 	return err;
4722 }
4723 
4724 static const struct got_error *
4725 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4726     const char *path, struct got_object_id *blob_id,
4727     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4728     int dirfd, const char *de_name)
4729 {
4730 	struct print_diff_arg *a = arg;
4731 	const struct got_error *err = NULL;
4732 	struct got_blob_object *blob1 = NULL;
4733 	int fd = -1, fd1 = -1, fd2 = -1;
4734 	FILE *f2 = NULL;
4735 	char *abspath = NULL, *label1 = NULL;
4736 	struct stat sb;
4737 	off_t size1 = 0;
4738 	int f2_exists = 0;
4739 
4740 	memset(&sb, 0, sizeof(sb));
4741 
4742 	if (a->diff_staged) {
4743 		if (staged_status != GOT_STATUS_MODIFY &&
4744 		    staged_status != GOT_STATUS_ADD &&
4745 		    staged_status != GOT_STATUS_DELETE)
4746 			return NULL;
4747 	} else {
4748 		if (staged_status == GOT_STATUS_DELETE)
4749 			return NULL;
4750 		if (status == GOT_STATUS_NONEXISTENT)
4751 			return got_error_set_errno(ENOENT, path);
4752 		if (status != GOT_STATUS_MODIFY &&
4753 		    status != GOT_STATUS_ADD &&
4754 		    status != GOT_STATUS_DELETE &&
4755 		    status != GOT_STATUS_CONFLICT)
4756 			return NULL;
4757 	}
4758 
4759 	err = got_opentemp_truncate(a->f1);
4760 	if (err)
4761 		return got_error_from_errno("got_opentemp_truncate");
4762 	err = got_opentemp_truncate(a->f2);
4763 	if (err)
4764 		return got_error_from_errno("got_opentemp_truncate");
4765 
4766 	if (!a->header_shown) {
4767 		printf("diff %s%s\n", a->diff_staged ? "-s " : "",
4768 		    got_worktree_get_root_path(a->worktree));
4769 		printf("commit - %s\n", a->id_str);
4770 		printf("path + %s%s\n",
4771 		    got_worktree_get_root_path(a->worktree),
4772 		    a->diff_staged ? " (staged changes)" : "");
4773 		a->header_shown = 1;
4774 	}
4775 
4776 	if (a->diff_staged) {
4777 		const char *label1 = NULL, *label2 = NULL;
4778 		switch (staged_status) {
4779 		case GOT_STATUS_MODIFY:
4780 			label1 = path;
4781 			label2 = path;
4782 			break;
4783 		case GOT_STATUS_ADD:
4784 			label2 = path;
4785 			break;
4786 		case GOT_STATUS_DELETE:
4787 			label1 = path;
4788 			break;
4789 		default:
4790 			return got_error(GOT_ERR_FILE_STATUS);
4791 		}
4792 		fd1 = got_opentempfd();
4793 		if (fd1 == -1) {
4794 			err = got_error_from_errno("got_opentempfd");
4795 			goto done;
4796 		}
4797 		fd2 = got_opentempfd();
4798 		if (fd2 == -1) {
4799 			err = got_error_from_errno("got_opentempfd");
4800 			goto done;
4801 		}
4802 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4803 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4804 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4805 		    a->force_text_diff, a->repo, stdout);
4806 		goto done;
4807 	}
4808 
4809 	fd1 = got_opentempfd();
4810 	if (fd1 == -1) {
4811 		err = got_error_from_errno("got_opentempfd");
4812 		goto done;
4813 	}
4814 
4815 	if (staged_status == GOT_STATUS_ADD ||
4816 	    staged_status == GOT_STATUS_MODIFY) {
4817 		char *id_str;
4818 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4819 		    8192, fd1);
4820 		if (err)
4821 			goto done;
4822 		err = got_object_id_str(&id_str, staged_blob_id);
4823 		if (err)
4824 			goto done;
4825 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4826 			err = got_error_from_errno("asprintf");
4827 			free(id_str);
4828 			goto done;
4829 		}
4830 		free(id_str);
4831 	} else if (status != GOT_STATUS_ADD) {
4832 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
4833 		    fd1);
4834 		if (err)
4835 			goto done;
4836 	}
4837 
4838 	if (status != GOT_STATUS_DELETE) {
4839 		if (asprintf(&abspath, "%s/%s",
4840 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4841 			err = got_error_from_errno("asprintf");
4842 			goto done;
4843 		}
4844 
4845 		if (dirfd != -1) {
4846 			fd = openat(dirfd, de_name,
4847 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4848 			if (fd == -1) {
4849 				if (!got_err_open_nofollow_on_symlink()) {
4850 					err = got_error_from_errno2("openat",
4851 					    abspath);
4852 					goto done;
4853 				}
4854 				err = get_symlink_target_file(&fd, dirfd,
4855 				    de_name, abspath);
4856 				if (err)
4857 					goto done;
4858 			}
4859 		} else {
4860 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4861 			if (fd == -1) {
4862 				if (!got_err_open_nofollow_on_symlink()) {
4863 					err = got_error_from_errno2("open",
4864 					    abspath);
4865 					goto done;
4866 				}
4867 				err = get_symlink_target_file(&fd, dirfd,
4868 				    de_name, abspath);
4869 				if (err)
4870 					goto done;
4871 			}
4872 		}
4873 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
4874 			err = got_error_from_errno2("fstatat", abspath);
4875 			goto done;
4876 		}
4877 		f2 = fdopen(fd, "r");
4878 		if (f2 == NULL) {
4879 			err = got_error_from_errno2("fdopen", abspath);
4880 			goto done;
4881 		}
4882 		fd = -1;
4883 		f2_exists = 1;
4884 	}
4885 
4886 	if (blob1) {
4887 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
4888 		    a->f1, blob1);
4889 		if (err)
4890 			goto done;
4891 	}
4892 
4893 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
4894 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
4895 	    a->ignore_whitespace, a->force_text_diff, stdout);
4896 done:
4897 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
4898 		err = got_error_from_errno("close");
4899 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
4900 		err = got_error_from_errno("close");
4901 	if (blob1)
4902 		got_object_blob_close(blob1);
4903 	if (fd != -1 && close(fd) == -1 && err == NULL)
4904 		err = got_error_from_errno("close");
4905 	if (f2 && fclose(f2) == EOF && err == NULL)
4906 		err = got_error_from_errno("fclose");
4907 	free(abspath);
4908 	return err;
4909 }
4910 
4911 static const struct got_error *
4912 cmd_diff(int argc, char *argv[])
4913 {
4914 	const struct got_error *error;
4915 	struct got_repository *repo = NULL;
4916 	struct got_worktree *worktree = NULL;
4917 	char *cwd = NULL, *repo_path = NULL;
4918 	const char *commit_args[2] = { NULL, NULL };
4919 	int ncommit_args = 0;
4920 	struct got_object_id *ids[2] = { NULL, NULL };
4921 	char *labels[2] = { NULL, NULL };
4922 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
4923 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
4924 	int force_text_diff = 0, force_path = 0, rflag = 0;
4925 	const char *errstr;
4926 	struct got_reflist_head refs;
4927 	struct got_pathlist_head paths;
4928 	struct got_pathlist_entry *pe;
4929 	FILE *f1 = NULL, *f2 = NULL;
4930 	int fd1 = -1, fd2 = -1;
4931 	int *pack_fds = NULL;
4932 
4933 	TAILQ_INIT(&refs);
4934 	TAILQ_INIT(&paths);
4935 
4936 #ifndef PROFILE
4937 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4938 	    NULL) == -1)
4939 		err(1, "pledge");
4940 #endif
4941 
4942 	while ((ch = getopt(argc, argv, "aC:c:Pr:sw")) != -1) {
4943 		switch (ch) {
4944 		case 'a':
4945 			force_text_diff = 1;
4946 			break;
4947 		case 'C':
4948 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4949 			    &errstr);
4950 			if (errstr != NULL)
4951 				errx(1, "number of context lines is %s: %s",
4952 				    errstr, optarg);
4953 			break;
4954 		case 'c':
4955 			if (ncommit_args >= 2)
4956 				errx(1, "too many -c options used");
4957 			commit_args[ncommit_args++] = optarg;
4958 			break;
4959 		case 'P':
4960 			force_path = 1;
4961 			break;
4962 		case 'r':
4963 			repo_path = realpath(optarg, NULL);
4964 			if (repo_path == NULL)
4965 				return got_error_from_errno2("realpath",
4966 				    optarg);
4967 			got_path_strip_trailing_slashes(repo_path);
4968 			rflag = 1;
4969 			break;
4970 		case 's':
4971 			diff_staged = 1;
4972 			break;
4973 		case 'w':
4974 			ignore_whitespace = 1;
4975 			break;
4976 		default:
4977 			usage_diff();
4978 			/* NOTREACHED */
4979 		}
4980 	}
4981 
4982 	argc -= optind;
4983 	argv += optind;
4984 
4985 	cwd = getcwd(NULL, 0);
4986 	if (cwd == NULL) {
4987 		error = got_error_from_errno("getcwd");
4988 		goto done;
4989 	}
4990 
4991 	error = got_repo_pack_fds_open(&pack_fds);
4992 	if (error != NULL)
4993 		goto done;
4994 
4995 	if (repo_path == NULL) {
4996 		error = got_worktree_open(&worktree, cwd);
4997 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4998 			goto done;
4999 		else
5000 			error = NULL;
5001 		if (worktree) {
5002 			repo_path =
5003 			    strdup(got_worktree_get_repo_path(worktree));
5004 			if (repo_path == NULL) {
5005 				error = got_error_from_errno("strdup");
5006 				goto done;
5007 			}
5008 		} else {
5009 			repo_path = strdup(cwd);
5010 			if (repo_path == NULL) {
5011 				error = got_error_from_errno("strdup");
5012 				goto done;
5013 			}
5014 		}
5015 	}
5016 
5017 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5018 	free(repo_path);
5019 	if (error != NULL)
5020 		goto done;
5021 
5022 	if (rflag || worktree == NULL || ncommit_args > 0) {
5023 		if (force_path) {
5024 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5025 			    "-P option can only be used when diffing "
5026 			    "a work tree");
5027 			goto done;
5028 		}
5029 		if (diff_staged) {
5030 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5031 			    "-s option can only be used when diffing "
5032 			    "a work tree");
5033 			goto done;
5034 		}
5035 	}
5036 
5037 	error = apply_unveil(got_repo_get_path(repo), 1,
5038 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5039 	if (error)
5040 		goto done;
5041 
5042 	if ((!force_path && argc == 2) || ncommit_args > 0) {
5043 		int obj_type = (ncommit_args > 0 ?
5044 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
5045 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5046 		    NULL);
5047 		if (error)
5048 			goto done;
5049 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
5050 			const char *arg;
5051 			if (ncommit_args > 0)
5052 				arg = commit_args[i];
5053 			else
5054 				arg = argv[i];
5055 			error = got_repo_match_object_id(&ids[i], &labels[i],
5056 			    arg, obj_type, &refs, repo);
5057 			if (error) {
5058 				if (error->code != GOT_ERR_NOT_REF &&
5059 				    error->code != GOT_ERR_NO_OBJ)
5060 					goto done;
5061 				if (ncommit_args > 0)
5062 					goto done;
5063 				error = NULL;
5064 				break;
5065 			}
5066 		}
5067 	}
5068 
5069 	f1 = got_opentemp();
5070 	if (f1 == NULL) {
5071 		error = got_error_from_errno("got_opentemp");
5072 		goto done;
5073 	}
5074 
5075 	f2 = got_opentemp();
5076 	if (f2 == NULL) {
5077 		error = got_error_from_errno("got_opentemp");
5078 		goto done;
5079 	}
5080 
5081 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5082 		struct print_diff_arg arg;
5083 		char *id_str;
5084 
5085 		if (worktree == NULL) {
5086 			if (argc == 2 && ids[0] == NULL) {
5087 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5088 				goto done;
5089 			} else if (argc == 2 && ids[1] == NULL) {
5090 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5091 				goto done;
5092 			} else if (argc > 0) {
5093 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5094 				    "%s", "specified paths cannot be resolved");
5095 				goto done;
5096 			} else {
5097 				error = got_error(GOT_ERR_NOT_WORKTREE);
5098 				goto done;
5099 			}
5100 		}
5101 
5102 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5103 		    worktree);
5104 		if (error)
5105 			goto done;
5106 
5107 		error = got_object_id_str(&id_str,
5108 		    got_worktree_get_base_commit_id(worktree));
5109 		if (error)
5110 			goto done;
5111 		arg.repo = repo;
5112 		arg.worktree = worktree;
5113 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5114 		arg.diff_context = diff_context;
5115 		arg.id_str = id_str;
5116 		arg.header_shown = 0;
5117 		arg.diff_staged = diff_staged;
5118 		arg.ignore_whitespace = ignore_whitespace;
5119 		arg.force_text_diff = force_text_diff;
5120 		arg.f1 = f1;
5121 		arg.f2 = f2;
5122 
5123 		error = got_worktree_status(worktree, &paths, repo, 0,
5124 		    print_diff, &arg, check_cancelled, NULL);
5125 		free(id_str);
5126 		goto done;
5127 	}
5128 
5129 	if (ncommit_args == 1) {
5130 		struct got_commit_object *commit;
5131 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5132 		if (error)
5133 			goto done;
5134 
5135 		labels[1] = labels[0];
5136 		ids[1] = ids[0];
5137 		if (got_object_commit_get_nparents(commit) > 0) {
5138 			const struct got_object_id_queue *pids;
5139 			struct got_object_qid *pid;
5140 			pids = got_object_commit_get_parent_ids(commit);
5141 			pid = STAILQ_FIRST(pids);
5142 			ids[0] = got_object_id_dup(&pid->id);
5143 			if (ids[0] == NULL) {
5144 				error = got_error_from_errno(
5145 				    "got_object_id_dup");
5146 				got_object_commit_close(commit);
5147 				goto done;
5148 			}
5149 			error = got_object_id_str(&labels[0], ids[0]);
5150 			if (error) {
5151 				got_object_commit_close(commit);
5152 				goto done;
5153 			}
5154 		} else {
5155 			ids[0] = NULL;
5156 			labels[0] = strdup("/dev/null");
5157 			if (labels[0] == NULL) {
5158 				error = got_error_from_errno("strdup");
5159 				got_object_commit_close(commit);
5160 				goto done;
5161 			}
5162 		}
5163 
5164 		got_object_commit_close(commit);
5165 	}
5166 
5167 	if (ncommit_args == 0 && argc > 2) {
5168 		error = got_error_msg(GOT_ERR_BAD_PATH,
5169 		    "path arguments cannot be used when diffing two objects");
5170 		goto done;
5171 	}
5172 
5173 	if (ids[0]) {
5174 		error = got_object_get_type(&type1, repo, ids[0]);
5175 		if (error)
5176 			goto done;
5177 	}
5178 
5179 	error = got_object_get_type(&type2, repo, ids[1]);
5180 	if (error)
5181 		goto done;
5182 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5183 		error = got_error(GOT_ERR_OBJ_TYPE);
5184 		goto done;
5185 	}
5186 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
5187 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5188 		    "path arguments cannot be used when diffing blobs");
5189 		goto done;
5190 	}
5191 
5192 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5193 		char *in_repo_path;
5194 		struct got_pathlist_entry *new;
5195 		if (worktree) {
5196 			const char *prefix;
5197 			char *p;
5198 			error = got_worktree_resolve_path(&p, worktree,
5199 			    argv[i]);
5200 			if (error)
5201 				goto done;
5202 			prefix = got_worktree_get_path_prefix(worktree);
5203 			while (prefix[0] == '/')
5204 				prefix++;
5205 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5206 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5207 			    p) == -1) {
5208 				error = got_error_from_errno("asprintf");
5209 				free(p);
5210 				goto done;
5211 			}
5212 			free(p);
5213 		} else {
5214 			char *mapped_path, *s;
5215 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5216 			if (error)
5217 				goto done;
5218 			s = mapped_path;
5219 			while (s[0] == '/')
5220 				s++;
5221 			in_repo_path = strdup(s);
5222 			if (in_repo_path == NULL) {
5223 				error = got_error_from_errno("asprintf");
5224 				free(mapped_path);
5225 				goto done;
5226 			}
5227 			free(mapped_path);
5228 
5229 		}
5230 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5231 		if (error || new == NULL /* duplicate */)
5232 			free(in_repo_path);
5233 		if (error)
5234 			goto done;
5235 	}
5236 
5237 	if (worktree) {
5238 		/* Release work tree lock. */
5239 		got_worktree_close(worktree);
5240 		worktree = NULL;
5241 	}
5242 
5243 	fd1 = got_opentempfd();
5244 	if (fd1 == -1) {
5245 		error = got_error_from_errno("got_opentempfd");
5246 		goto done;
5247 	}
5248 
5249 	fd2 = got_opentempfd();
5250 	if (fd2 == -1) {
5251 		error = got_error_from_errno("got_opentempfd");
5252 		goto done;
5253 	}
5254 
5255 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5256 	case GOT_OBJ_TYPE_BLOB:
5257 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5258 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5259 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5260 		    ignore_whitespace, force_text_diff, repo, stdout);
5261 		break;
5262 	case GOT_OBJ_TYPE_TREE:
5263 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5264 		    ids[0], ids[1], &paths, "", "",
5265 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5266 		    ignore_whitespace, force_text_diff, repo, stdout);
5267 		break;
5268 	case GOT_OBJ_TYPE_COMMIT:
5269 		printf("diff %s %s\n", labels[0], labels[1]);
5270 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5271 		    fd1, fd2, ids[0], ids[1], &paths,
5272 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5273 		    ignore_whitespace, force_text_diff, repo, stdout);
5274 		break;
5275 	default:
5276 		error = got_error(GOT_ERR_OBJ_TYPE);
5277 	}
5278 done:
5279 	free(labels[0]);
5280 	free(labels[1]);
5281 	free(ids[0]);
5282 	free(ids[1]);
5283 	if (worktree)
5284 		got_worktree_close(worktree);
5285 	if (repo) {
5286 		const struct got_error *close_err = got_repo_close(repo);
5287 		if (error == NULL)
5288 			error = close_err;
5289 	}
5290 	if (pack_fds) {
5291 		const struct got_error *pack_err =
5292 		    got_repo_pack_fds_close(pack_fds);
5293 		if (error == NULL)
5294 			error = pack_err;
5295 	}
5296 	TAILQ_FOREACH(pe, &paths, entry)
5297 		free((char *)pe->path);
5298 	got_pathlist_free(&paths);
5299 	got_ref_list_free(&refs);
5300 	if (f1 && fclose(f1) == EOF && error == NULL)
5301 		error = got_error_from_errno("fclose");
5302 	if (f2 && fclose(f2) == EOF && error == NULL)
5303 		error = got_error_from_errno("fclose");
5304 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5305 		error = got_error_from_errno("close");
5306 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5307 		error = got_error_from_errno("close");
5308 	return error;
5309 }
5310 
5311 __dead static void
5312 usage_blame(void)
5313 {
5314 	fprintf(stderr,
5315 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5316 	    getprogname());
5317 	exit(1);
5318 }
5319 
5320 struct blame_line {
5321 	int annotated;
5322 	char *id_str;
5323 	char *committer;
5324 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5325 };
5326 
5327 struct blame_cb_args {
5328 	struct blame_line *lines;
5329 	int nlines;
5330 	int nlines_prec;
5331 	int lineno_cur;
5332 	off_t *line_offsets;
5333 	FILE *f;
5334 	struct got_repository *repo;
5335 };
5336 
5337 static const struct got_error *
5338 blame_cb(void *arg, int nlines, int lineno,
5339     struct got_commit_object *commit, struct got_object_id *id)
5340 {
5341 	const struct got_error *err = NULL;
5342 	struct blame_cb_args *a = arg;
5343 	struct blame_line *bline;
5344 	char *line = NULL;
5345 	size_t linesize = 0;
5346 	off_t offset;
5347 	struct tm tm;
5348 	time_t committer_time;
5349 
5350 	if (nlines != a->nlines ||
5351 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5352 		return got_error(GOT_ERR_RANGE);
5353 
5354 	if (sigint_received)
5355 		return got_error(GOT_ERR_ITER_COMPLETED);
5356 
5357 	if (lineno == -1)
5358 		return NULL; /* no change in this commit */
5359 
5360 	/* Annotate this line. */
5361 	bline = &a->lines[lineno - 1];
5362 	if (bline->annotated)
5363 		return NULL;
5364 	err = got_object_id_str(&bline->id_str, id);
5365 	if (err)
5366 		return err;
5367 
5368 	bline->committer = strdup(got_object_commit_get_committer(commit));
5369 	if (bline->committer == NULL) {
5370 		err = got_error_from_errno("strdup");
5371 		goto done;
5372 	}
5373 
5374 	committer_time = got_object_commit_get_committer_time(commit);
5375 	if (gmtime_r(&committer_time, &tm) == NULL)
5376 		return got_error_from_errno("gmtime_r");
5377 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
5378 	    &tm) == 0) {
5379 		err = got_error(GOT_ERR_NO_SPACE);
5380 		goto done;
5381 	}
5382 	bline->annotated = 1;
5383 
5384 	/* Print lines annotated so far. */
5385 	bline = &a->lines[a->lineno_cur - 1];
5386 	if (!bline->annotated)
5387 		goto done;
5388 
5389 	offset = a->line_offsets[a->lineno_cur - 1];
5390 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5391 		err = got_error_from_errno("fseeko");
5392 		goto done;
5393 	}
5394 
5395 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5396 		char *smallerthan, *at, *nl, *committer;
5397 		size_t len;
5398 
5399 		if (getline(&line, &linesize, a->f) == -1) {
5400 			if (ferror(a->f))
5401 				err = got_error_from_errno("getline");
5402 			break;
5403 		}
5404 
5405 		committer = bline->committer;
5406 		smallerthan = strchr(committer, '<');
5407 		if (smallerthan && smallerthan[1] != '\0')
5408 			committer = smallerthan + 1;
5409 		at = strchr(committer, '@');
5410 		if (at)
5411 			*at = '\0';
5412 		len = strlen(committer);
5413 		if (len >= 9)
5414 			committer[8] = '\0';
5415 
5416 		nl = strchr(line, '\n');
5417 		if (nl)
5418 			*nl = '\0';
5419 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5420 		    bline->id_str, bline->datebuf, committer, line);
5421 
5422 		a->lineno_cur++;
5423 		bline = &a->lines[a->lineno_cur - 1];
5424 	}
5425 done:
5426 	free(line);
5427 	return err;
5428 }
5429 
5430 static const struct got_error *
5431 cmd_blame(int argc, char *argv[])
5432 {
5433 	const struct got_error *error;
5434 	struct got_repository *repo = NULL;
5435 	struct got_worktree *worktree = NULL;
5436 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5437 	char *link_target = NULL;
5438 	struct got_object_id *obj_id = NULL;
5439 	struct got_object_id *commit_id = NULL;
5440 	struct got_commit_object *commit = NULL;
5441 	struct got_blob_object *blob = NULL;
5442 	char *commit_id_str = NULL;
5443 	struct blame_cb_args bca;
5444 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5445 	off_t filesize;
5446 	int *pack_fds = NULL;
5447 	FILE *f1 = NULL, *f2 = NULL;
5448 
5449 	fd1 = got_opentempfd();
5450 	if (fd1 == -1)
5451 		return got_error_from_errno("got_opentempfd");
5452 
5453 	memset(&bca, 0, sizeof(bca));
5454 
5455 #ifndef PROFILE
5456 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5457 	    NULL) == -1)
5458 		err(1, "pledge");
5459 #endif
5460 
5461 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5462 		switch (ch) {
5463 		case 'c':
5464 			commit_id_str = optarg;
5465 			break;
5466 		case 'r':
5467 			repo_path = realpath(optarg, NULL);
5468 			if (repo_path == NULL)
5469 				return got_error_from_errno2("realpath",
5470 				    optarg);
5471 			got_path_strip_trailing_slashes(repo_path);
5472 			break;
5473 		default:
5474 			usage_blame();
5475 			/* NOTREACHED */
5476 		}
5477 	}
5478 
5479 	argc -= optind;
5480 	argv += optind;
5481 
5482 	if (argc == 1)
5483 		path = argv[0];
5484 	else
5485 		usage_blame();
5486 
5487 	cwd = getcwd(NULL, 0);
5488 	if (cwd == NULL) {
5489 		error = got_error_from_errno("getcwd");
5490 		goto done;
5491 	}
5492 
5493 	error = got_repo_pack_fds_open(&pack_fds);
5494 	if (error != NULL)
5495 		goto done;
5496 
5497 	if (repo_path == NULL) {
5498 		error = got_worktree_open(&worktree, cwd);
5499 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5500 			goto done;
5501 		else
5502 			error = NULL;
5503 		if (worktree) {
5504 			repo_path =
5505 			    strdup(got_worktree_get_repo_path(worktree));
5506 			if (repo_path == NULL) {
5507 				error = got_error_from_errno("strdup");
5508 				if (error)
5509 					goto done;
5510 			}
5511 		} else {
5512 			repo_path = strdup(cwd);
5513 			if (repo_path == NULL) {
5514 				error = got_error_from_errno("strdup");
5515 				goto done;
5516 			}
5517 		}
5518 	}
5519 
5520 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5521 	if (error != NULL)
5522 		goto done;
5523 
5524 	if (worktree) {
5525 		const char *prefix = got_worktree_get_path_prefix(worktree);
5526 		char *p;
5527 
5528 		error = got_worktree_resolve_path(&p, worktree, path);
5529 		if (error)
5530 			goto done;
5531 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5532 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5533 		    p) == -1) {
5534 			error = got_error_from_errno("asprintf");
5535 			free(p);
5536 			goto done;
5537 		}
5538 		free(p);
5539 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5540 	} else {
5541 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5542 		if (error)
5543 			goto done;
5544 		error = got_repo_map_path(&in_repo_path, repo, path);
5545 	}
5546 	if (error)
5547 		goto done;
5548 
5549 	if (commit_id_str == NULL) {
5550 		struct got_reference *head_ref;
5551 		error = got_ref_open(&head_ref, repo, worktree ?
5552 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5553 		if (error != NULL)
5554 			goto done;
5555 		error = got_ref_resolve(&commit_id, repo, head_ref);
5556 		got_ref_close(head_ref);
5557 		if (error != NULL)
5558 			goto done;
5559 	} else {
5560 		struct got_reflist_head refs;
5561 		TAILQ_INIT(&refs);
5562 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5563 		    NULL);
5564 		if (error)
5565 			goto done;
5566 		error = got_repo_match_object_id(&commit_id, NULL,
5567 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5568 		got_ref_list_free(&refs);
5569 		if (error)
5570 			goto done;
5571 	}
5572 
5573 	if (worktree) {
5574 		/* Release work tree lock. */
5575 		got_worktree_close(worktree);
5576 		worktree = NULL;
5577 	}
5578 
5579 	error = got_object_open_as_commit(&commit, repo, commit_id);
5580 	if (error)
5581 		goto done;
5582 
5583 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5584 	    commit, repo);
5585 	if (error)
5586 		goto done;
5587 
5588 	error = got_object_id_by_path(&obj_id, repo, commit,
5589 	    link_target ? link_target : in_repo_path);
5590 	if (error)
5591 		goto done;
5592 
5593 	error = got_object_get_type(&obj_type, repo, obj_id);
5594 	if (error)
5595 		goto done;
5596 
5597 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5598 		error = got_error_path(link_target ? link_target : in_repo_path,
5599 		    GOT_ERR_OBJ_TYPE);
5600 		goto done;
5601 	}
5602 
5603 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5604 	if (error)
5605 		goto done;
5606 	bca.f = got_opentemp();
5607 	if (bca.f == NULL) {
5608 		error = got_error_from_errno("got_opentemp");
5609 		goto done;
5610 	}
5611 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5612 	    &bca.line_offsets, bca.f, blob);
5613 	if (error || bca.nlines == 0)
5614 		goto done;
5615 
5616 	/* Don't include \n at EOF in the blame line count. */
5617 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5618 		bca.nlines--;
5619 
5620 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5621 	if (bca.lines == NULL) {
5622 		error = got_error_from_errno("calloc");
5623 		goto done;
5624 	}
5625 	bca.lineno_cur = 1;
5626 	bca.nlines_prec = 0;
5627 	i = bca.nlines;
5628 	while (i > 0) {
5629 		i /= 10;
5630 		bca.nlines_prec++;
5631 	}
5632 	bca.repo = repo;
5633 
5634 	fd2 = got_opentempfd();
5635 	if (fd2 == -1) {
5636 		error = got_error_from_errno("got_opentempfd");
5637 		goto done;
5638 	}
5639 	fd3 = got_opentempfd();
5640 	if (fd3 == -1) {
5641 		error = got_error_from_errno("got_opentempfd");
5642 		goto done;
5643 	}
5644 	f1 = got_opentemp();
5645 	if (f1 == NULL) {
5646 		error = got_error_from_errno("got_opentemp");
5647 		goto done;
5648 	}
5649 	f2 = got_opentemp();
5650 	if (f2 == NULL) {
5651 		error = got_error_from_errno("got_opentemp");
5652 		goto done;
5653 	}
5654 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5655 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5656 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5657 done:
5658 	free(in_repo_path);
5659 	free(link_target);
5660 	free(repo_path);
5661 	free(cwd);
5662 	free(commit_id);
5663 	free(obj_id);
5664 	if (commit)
5665 		got_object_commit_close(commit);
5666 
5667 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5668 		error = got_error_from_errno("close");
5669 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5670 		error = got_error_from_errno("close");
5671 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5672 		error = got_error_from_errno("close");
5673 	if (f1 && fclose(f1) == EOF && error == NULL)
5674 		error = got_error_from_errno("fclose");
5675 	if (f2 && fclose(f2) == EOF && error == NULL)
5676 		error = got_error_from_errno("fclose");
5677 
5678 	if (blob)
5679 		got_object_blob_close(blob);
5680 	if (worktree)
5681 		got_worktree_close(worktree);
5682 	if (repo) {
5683 		const struct got_error *close_err = got_repo_close(repo);
5684 		if (error == NULL)
5685 			error = close_err;
5686 	}
5687 	if (pack_fds) {
5688 		const struct got_error *pack_err =
5689 		    got_repo_pack_fds_close(pack_fds);
5690 		if (error == NULL)
5691 			error = pack_err;
5692 	}
5693 	if (bca.lines) {
5694 		for (i = 0; i < bca.nlines; i++) {
5695 			struct blame_line *bline = &bca.lines[i];
5696 			free(bline->id_str);
5697 			free(bline->committer);
5698 		}
5699 		free(bca.lines);
5700 	}
5701 	free(bca.line_offsets);
5702 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5703 		error = got_error_from_errno("fclose");
5704 	return error;
5705 }
5706 
5707 __dead static void
5708 usage_tree(void)
5709 {
5710 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
5711 	    "[path]\n", getprogname());
5712 	exit(1);
5713 }
5714 
5715 static const struct got_error *
5716 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5717     const char *root_path, struct got_repository *repo)
5718 {
5719 	const struct got_error *err = NULL;
5720 	int is_root_path = (strcmp(path, root_path) == 0);
5721 	const char *modestr = "";
5722 	mode_t mode = got_tree_entry_get_mode(te);
5723 	char *link_target = NULL;
5724 
5725 	path += strlen(root_path);
5726 	while (path[0] == '/')
5727 		path++;
5728 
5729 	if (got_object_tree_entry_is_submodule(te))
5730 		modestr = "$";
5731 	else if (S_ISLNK(mode)) {
5732 		int i;
5733 
5734 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5735 		if (err)
5736 			return err;
5737 		for (i = 0; i < strlen(link_target); i++) {
5738 			if (!isprint((unsigned char)link_target[i]))
5739 				link_target[i] = '?';
5740 		}
5741 
5742 		modestr = "@";
5743 	}
5744 	else if (S_ISDIR(mode))
5745 		modestr = "/";
5746 	else if (mode & S_IXUSR)
5747 		modestr = "*";
5748 
5749 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5750 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5751 	    link_target ? " -> ": "", link_target ? link_target : "");
5752 
5753 	free(link_target);
5754 	return NULL;
5755 }
5756 
5757 static const struct got_error *
5758 print_tree(const char *path, struct got_commit_object *commit,
5759     int show_ids, int recurse, const char *root_path,
5760     struct got_repository *repo)
5761 {
5762 	const struct got_error *err = NULL;
5763 	struct got_object_id *tree_id = NULL;
5764 	struct got_tree_object *tree = NULL;
5765 	int nentries, i;
5766 
5767 	err = got_object_id_by_path(&tree_id, repo, commit, path);
5768 	if (err)
5769 		goto done;
5770 
5771 	err = got_object_open_as_tree(&tree, repo, tree_id);
5772 	if (err)
5773 		goto done;
5774 	nentries = got_object_tree_get_nentries(tree);
5775 	for (i = 0; i < nentries; i++) {
5776 		struct got_tree_entry *te;
5777 		char *id = NULL;
5778 
5779 		if (sigint_received || sigpipe_received)
5780 			break;
5781 
5782 		te = got_object_tree_get_entry(tree, i);
5783 		if (show_ids) {
5784 			char *id_str;
5785 			err = got_object_id_str(&id_str,
5786 			    got_tree_entry_get_id(te));
5787 			if (err)
5788 				goto done;
5789 			if (asprintf(&id, "%s ", id_str) == -1) {
5790 				err = got_error_from_errno("asprintf");
5791 				free(id_str);
5792 				goto done;
5793 			}
5794 			free(id_str);
5795 		}
5796 		err = print_entry(te, id, path, root_path, repo);
5797 		free(id);
5798 		if (err)
5799 			goto done;
5800 
5801 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5802 			char *child_path;
5803 			if (asprintf(&child_path, "%s%s%s", path,
5804 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5805 			    got_tree_entry_get_name(te)) == -1) {
5806 				err = got_error_from_errno("asprintf");
5807 				goto done;
5808 			}
5809 			err = print_tree(child_path, commit, show_ids, 1,
5810 			    root_path, repo);
5811 			free(child_path);
5812 			if (err)
5813 				goto done;
5814 		}
5815 	}
5816 done:
5817 	if (tree)
5818 		got_object_tree_close(tree);
5819 	free(tree_id);
5820 	return err;
5821 }
5822 
5823 static const struct got_error *
5824 cmd_tree(int argc, char *argv[])
5825 {
5826 	const struct got_error *error;
5827 	struct got_repository *repo = NULL;
5828 	struct got_worktree *worktree = NULL;
5829 	const char *path, *refname = NULL;
5830 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5831 	struct got_object_id *commit_id = NULL;
5832 	struct got_commit_object *commit = NULL;
5833 	char *commit_id_str = NULL;
5834 	int show_ids = 0, recurse = 0;
5835 	int ch;
5836 	int *pack_fds = NULL;
5837 
5838 #ifndef PROFILE
5839 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5840 	    NULL) == -1)
5841 		err(1, "pledge");
5842 #endif
5843 
5844 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
5845 		switch (ch) {
5846 		case 'c':
5847 			commit_id_str = optarg;
5848 			break;
5849 		case 'i':
5850 			show_ids = 1;
5851 			break;
5852 		case 'R':
5853 			recurse = 1;
5854 			break;
5855 		case 'r':
5856 			repo_path = realpath(optarg, NULL);
5857 			if (repo_path == NULL)
5858 				return got_error_from_errno2("realpath",
5859 				    optarg);
5860 			got_path_strip_trailing_slashes(repo_path);
5861 			break;
5862 		default:
5863 			usage_tree();
5864 			/* NOTREACHED */
5865 		}
5866 	}
5867 
5868 	argc -= optind;
5869 	argv += optind;
5870 
5871 	if (argc == 1)
5872 		path = argv[0];
5873 	else if (argc > 1)
5874 		usage_tree();
5875 	else
5876 		path = NULL;
5877 
5878 	cwd = getcwd(NULL, 0);
5879 	if (cwd == NULL) {
5880 		error = got_error_from_errno("getcwd");
5881 		goto done;
5882 	}
5883 
5884 	error = got_repo_pack_fds_open(&pack_fds);
5885 	if (error != NULL)
5886 		goto done;
5887 
5888 	if (repo_path == NULL) {
5889 		error = got_worktree_open(&worktree, cwd);
5890 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5891 			goto done;
5892 		else
5893 			error = NULL;
5894 		if (worktree) {
5895 			repo_path =
5896 			    strdup(got_worktree_get_repo_path(worktree));
5897 			if (repo_path == NULL)
5898 				error = got_error_from_errno("strdup");
5899 			if (error)
5900 				goto done;
5901 		} else {
5902 			repo_path = strdup(cwd);
5903 			if (repo_path == NULL) {
5904 				error = got_error_from_errno("strdup");
5905 				goto done;
5906 			}
5907 		}
5908 	}
5909 
5910 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5911 	if (error != NULL)
5912 		goto done;
5913 
5914 	if (worktree) {
5915 		const char *prefix = got_worktree_get_path_prefix(worktree);
5916 		char *p;
5917 
5918 		if (path == NULL)
5919 			path = "";
5920 		error = got_worktree_resolve_path(&p, worktree, path);
5921 		if (error)
5922 			goto done;
5923 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5924 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5925 		    p) == -1) {
5926 			error = got_error_from_errno("asprintf");
5927 			free(p);
5928 			goto done;
5929 		}
5930 		free(p);
5931 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5932 		if (error)
5933 			goto done;
5934 	} else {
5935 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5936 		if (error)
5937 			goto done;
5938 		if (path == NULL)
5939 			path = "/";
5940 		error = got_repo_map_path(&in_repo_path, repo, path);
5941 		if (error != NULL)
5942 			goto done;
5943 	}
5944 
5945 	if (commit_id_str == NULL) {
5946 		struct got_reference *head_ref;
5947 		if (worktree)
5948 			refname = got_worktree_get_head_ref_name(worktree);
5949 		else
5950 			refname = GOT_REF_HEAD;
5951 		error = got_ref_open(&head_ref, repo, refname, 0);
5952 		if (error != NULL)
5953 			goto done;
5954 		error = got_ref_resolve(&commit_id, repo, head_ref);
5955 		got_ref_close(head_ref);
5956 		if (error != NULL)
5957 			goto done;
5958 	} else {
5959 		struct got_reflist_head refs;
5960 		TAILQ_INIT(&refs);
5961 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5962 		    NULL);
5963 		if (error)
5964 			goto done;
5965 		error = got_repo_match_object_id(&commit_id, NULL,
5966 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5967 		got_ref_list_free(&refs);
5968 		if (error)
5969 			goto done;
5970 	}
5971 
5972 	if (worktree) {
5973 		/* Release work tree lock. */
5974 		got_worktree_close(worktree);
5975 		worktree = NULL;
5976 	}
5977 
5978 	error = got_object_open_as_commit(&commit, repo, commit_id);
5979 	if (error)
5980 		goto done;
5981 
5982 	error = print_tree(in_repo_path, commit, show_ids, recurse,
5983 	    in_repo_path, repo);
5984 done:
5985 	free(in_repo_path);
5986 	free(repo_path);
5987 	free(cwd);
5988 	free(commit_id);
5989 	if (commit)
5990 		got_object_commit_close(commit);
5991 	if (worktree)
5992 		got_worktree_close(worktree);
5993 	if (repo) {
5994 		const struct got_error *close_err = got_repo_close(repo);
5995 		if (error == NULL)
5996 			error = close_err;
5997 	}
5998 	if (pack_fds) {
5999 		const struct got_error *pack_err =
6000 		    got_repo_pack_fds_close(pack_fds);
6001 		if (error == NULL)
6002 			error = pack_err;
6003 	}
6004 	return error;
6005 }
6006 
6007 __dead static void
6008 usage_status(void)
6009 {
6010 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
6011 	    "[-s status-codes] [path ...]\n", getprogname());
6012 	exit(1);
6013 }
6014 
6015 struct got_status_arg {
6016 	char *status_codes;
6017 	int suppress;
6018 };
6019 
6020 static const struct got_error *
6021 print_status(void *arg, unsigned char status, unsigned char staged_status,
6022     const char *path, struct got_object_id *blob_id,
6023     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
6024     int dirfd, const char *de_name)
6025 {
6026 	struct got_status_arg *st = arg;
6027 
6028 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6029 		status = GOT_STATUS_NO_CHANGE;
6030 	if (st != NULL && st->status_codes) {
6031 		size_t ncodes = strlen(st->status_codes);
6032 		int i, j = 0;
6033 
6034 		for (i = 0; i < ncodes ; i++) {
6035 			if (st->suppress) {
6036 				if (status == st->status_codes[i] ||
6037 				    staged_status == st->status_codes[i]) {
6038 					j++;
6039 					continue;
6040 				}
6041 			} else {
6042 				if (status == st->status_codes[i] ||
6043 				    staged_status == st->status_codes[i])
6044 					break;
6045 			}
6046 		}
6047 
6048 		if (st->suppress && j == 0)
6049 			goto print;
6050 
6051 		if (i == ncodes)
6052 			return NULL;
6053 	}
6054 print:
6055 	printf("%c%c %s\n", status, staged_status, path);
6056 	return NULL;
6057 }
6058 
6059 static const struct got_error *
6060 cmd_status(int argc, char *argv[])
6061 {
6062 	const struct got_error *error = NULL;
6063 	struct got_repository *repo = NULL;
6064 	struct got_worktree *worktree = NULL;
6065 	struct got_status_arg st;
6066 	char *cwd = NULL;
6067 	struct got_pathlist_head paths;
6068 	struct got_pathlist_entry *pe;
6069 	int ch, i, no_ignores = 0;
6070 	int *pack_fds = NULL;
6071 
6072 	TAILQ_INIT(&paths);
6073 
6074 	memset(&st, 0, sizeof(st));
6075 	st.status_codes = NULL;
6076 	st.suppress = 0;
6077 
6078 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
6079 		switch (ch) {
6080 		case 'I':
6081 			no_ignores = 1;
6082 			break;
6083 		case 'S':
6084 			if (st.status_codes != NULL && st.suppress == 0)
6085 				option_conflict('S', 's');
6086 			st.suppress = 1;
6087 			/* fallthrough */
6088 		case 's':
6089 			for (i = 0; i < strlen(optarg); i++) {
6090 				switch (optarg[i]) {
6091 				case GOT_STATUS_MODIFY:
6092 				case GOT_STATUS_ADD:
6093 				case GOT_STATUS_DELETE:
6094 				case GOT_STATUS_CONFLICT:
6095 				case GOT_STATUS_MISSING:
6096 				case GOT_STATUS_OBSTRUCTED:
6097 				case GOT_STATUS_UNVERSIONED:
6098 				case GOT_STATUS_MODE_CHANGE:
6099 				case GOT_STATUS_NONEXISTENT:
6100 					break;
6101 				default:
6102 					errx(1, "invalid status code '%c'",
6103 					    optarg[i]);
6104 				}
6105 			}
6106 			if (ch == 's' && st.suppress)
6107 				option_conflict('s', 'S');
6108 			st.status_codes = optarg;
6109 			break;
6110 		default:
6111 			usage_status();
6112 			/* NOTREACHED */
6113 		}
6114 	}
6115 
6116 	argc -= optind;
6117 	argv += optind;
6118 
6119 #ifndef PROFILE
6120 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6121 	    NULL) == -1)
6122 		err(1, "pledge");
6123 #endif
6124 	cwd = getcwd(NULL, 0);
6125 	if (cwd == NULL) {
6126 		error = got_error_from_errno("getcwd");
6127 		goto done;
6128 	}
6129 
6130 	error = got_repo_pack_fds_open(&pack_fds);
6131 	if (error != NULL)
6132 		goto done;
6133 
6134 	error = got_worktree_open(&worktree, cwd);
6135 	if (error) {
6136 		if (error->code == GOT_ERR_NOT_WORKTREE)
6137 			error = wrap_not_worktree_error(error, "status", cwd);
6138 		goto done;
6139 	}
6140 
6141 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6142 	    NULL, pack_fds);
6143 	if (error != NULL)
6144 		goto done;
6145 
6146 	error = apply_unveil(got_repo_get_path(repo), 1,
6147 	    got_worktree_get_root_path(worktree));
6148 	if (error)
6149 		goto done;
6150 
6151 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6152 	if (error)
6153 		goto done;
6154 
6155 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6156 	    print_status, &st, check_cancelled, NULL);
6157 done:
6158 	if (pack_fds) {
6159 		const struct got_error *pack_err =
6160 		    got_repo_pack_fds_close(pack_fds);
6161 		if (error == NULL)
6162 			error = pack_err;
6163 	}
6164 
6165 	TAILQ_FOREACH(pe, &paths, entry)
6166 		free((char *)pe->path);
6167 	got_pathlist_free(&paths);
6168 	free(cwd);
6169 	return error;
6170 }
6171 
6172 __dead static void
6173 usage_ref(void)
6174 {
6175 	fprintf(stderr, "usage: %s ref [-dlt] [-c object] [-r repository-path] "
6176 	    "[-s reference] [name]\n", getprogname());
6177 	exit(1);
6178 }
6179 
6180 static const struct got_error *
6181 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6182 {
6183 	static const struct got_error *err = NULL;
6184 	struct got_reflist_head refs;
6185 	struct got_reflist_entry *re;
6186 
6187 	TAILQ_INIT(&refs);
6188 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6189 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6190 	    repo);
6191 	if (err)
6192 		return err;
6193 
6194 	TAILQ_FOREACH(re, &refs, entry) {
6195 		char *refstr;
6196 		refstr = got_ref_to_str(re->ref);
6197 		if (refstr == NULL) {
6198 			err = got_error_from_errno("got_ref_to_str");
6199 			break;
6200 		}
6201 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6202 		free(refstr);
6203 	}
6204 
6205 	got_ref_list_free(&refs);
6206 	return err;
6207 }
6208 
6209 static const struct got_error *
6210 delete_ref_by_name(struct got_repository *repo, const char *refname)
6211 {
6212 	const struct got_error *err;
6213 	struct got_reference *ref;
6214 
6215 	err = got_ref_open(&ref, repo, refname, 0);
6216 	if (err)
6217 		return err;
6218 
6219 	err = delete_ref(repo, ref);
6220 	got_ref_close(ref);
6221 	return err;
6222 }
6223 
6224 static const struct got_error *
6225 add_ref(struct got_repository *repo, const char *refname, const char *target)
6226 {
6227 	const struct got_error *err = NULL;
6228 	struct got_object_id *id = NULL;
6229 	struct got_reference *ref = NULL;
6230 	struct got_reflist_head refs;
6231 
6232 	/*
6233 	 * Don't let the user create a reference name with a leading '-'.
6234 	 * While technically a valid reference name, this case is usually
6235 	 * an unintended typo.
6236 	 */
6237 	if (refname[0] == '-')
6238 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6239 
6240 	TAILQ_INIT(&refs);
6241 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6242 	if (err)
6243 		goto done;
6244 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6245 	    &refs, repo);
6246 	got_ref_list_free(&refs);
6247 	if (err)
6248 		goto done;
6249 
6250 	err = got_ref_alloc(&ref, refname, id);
6251 	if (err)
6252 		goto done;
6253 
6254 	err = got_ref_write(ref, repo);
6255 done:
6256 	if (ref)
6257 		got_ref_close(ref);
6258 	free(id);
6259 	return err;
6260 }
6261 
6262 static const struct got_error *
6263 add_symref(struct got_repository *repo, const char *refname, const char *target)
6264 {
6265 	const struct got_error *err = NULL;
6266 	struct got_reference *ref = NULL;
6267 	struct got_reference *target_ref = NULL;
6268 
6269 	/*
6270 	 * Don't let the user create a reference name with a leading '-'.
6271 	 * While technically a valid reference name, this case is usually
6272 	 * an unintended typo.
6273 	 */
6274 	if (refname[0] == '-')
6275 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6276 
6277 	err = got_ref_open(&target_ref, repo, target, 0);
6278 	if (err)
6279 		return err;
6280 
6281 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6282 	if (err)
6283 		goto done;
6284 
6285 	err = got_ref_write(ref, repo);
6286 done:
6287 	if (target_ref)
6288 		got_ref_close(target_ref);
6289 	if (ref)
6290 		got_ref_close(ref);
6291 	return err;
6292 }
6293 
6294 static const struct got_error *
6295 cmd_ref(int argc, char *argv[])
6296 {
6297 	const struct got_error *error = NULL;
6298 	struct got_repository *repo = NULL;
6299 	struct got_worktree *worktree = NULL;
6300 	char *cwd = NULL, *repo_path = NULL;
6301 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6302 	const char *obj_arg = NULL, *symref_target= NULL;
6303 	char *refname = NULL;
6304 	int *pack_fds = NULL;
6305 
6306 	while ((ch = getopt(argc, argv, "c:dlr:s:t")) != -1) {
6307 		switch (ch) {
6308 		case 'c':
6309 			obj_arg = optarg;
6310 			break;
6311 		case 'd':
6312 			do_delete = 1;
6313 			break;
6314 		case 'l':
6315 			do_list = 1;
6316 			break;
6317 		case 'r':
6318 			repo_path = realpath(optarg, NULL);
6319 			if (repo_path == NULL)
6320 				return got_error_from_errno2("realpath",
6321 				    optarg);
6322 			got_path_strip_trailing_slashes(repo_path);
6323 			break;
6324 		case 's':
6325 			symref_target = optarg;
6326 			break;
6327 		case 't':
6328 			sort_by_time = 1;
6329 			break;
6330 		default:
6331 			usage_ref();
6332 			/* NOTREACHED */
6333 		}
6334 	}
6335 
6336 	if (obj_arg && do_list)
6337 		option_conflict('c', 'l');
6338 	if (obj_arg && do_delete)
6339 		option_conflict('c', 'd');
6340 	if (obj_arg && symref_target)
6341 		option_conflict('c', 's');
6342 	if (symref_target && do_delete)
6343 		option_conflict('s', 'd');
6344 	if (symref_target && do_list)
6345 		option_conflict('s', 'l');
6346 	if (do_delete && do_list)
6347 		option_conflict('d', 'l');
6348 	if (sort_by_time && !do_list)
6349 		errx(1, "-t option requires -l option");
6350 
6351 	argc -= optind;
6352 	argv += optind;
6353 
6354 	if (do_list) {
6355 		if (argc != 0 && argc != 1)
6356 			usage_ref();
6357 		if (argc == 1) {
6358 			refname = strdup(argv[0]);
6359 			if (refname == NULL) {
6360 				error = got_error_from_errno("strdup");
6361 				goto done;
6362 			}
6363 		}
6364 	} else {
6365 		if (argc != 1)
6366 			usage_ref();
6367 		refname = strdup(argv[0]);
6368 		if (refname == NULL) {
6369 			error = got_error_from_errno("strdup");
6370 			goto done;
6371 		}
6372 	}
6373 
6374 	if (refname)
6375 		got_path_strip_trailing_slashes(refname);
6376 
6377 #ifndef PROFILE
6378 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6379 	    "sendfd unveil", NULL) == -1)
6380 		err(1, "pledge");
6381 #endif
6382 	cwd = getcwd(NULL, 0);
6383 	if (cwd == NULL) {
6384 		error = got_error_from_errno("getcwd");
6385 		goto done;
6386 	}
6387 
6388 	error = got_repo_pack_fds_open(&pack_fds);
6389 	if (error != NULL)
6390 		goto done;
6391 
6392 	if (repo_path == NULL) {
6393 		error = got_worktree_open(&worktree, cwd);
6394 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6395 			goto done;
6396 		else
6397 			error = NULL;
6398 		if (worktree) {
6399 			repo_path =
6400 			    strdup(got_worktree_get_repo_path(worktree));
6401 			if (repo_path == NULL)
6402 				error = got_error_from_errno("strdup");
6403 			if (error)
6404 				goto done;
6405 		} else {
6406 			repo_path = strdup(cwd);
6407 			if (repo_path == NULL) {
6408 				error = got_error_from_errno("strdup");
6409 				goto done;
6410 			}
6411 		}
6412 	}
6413 
6414 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6415 	if (error != NULL)
6416 		goto done;
6417 
6418 #ifndef PROFILE
6419 	if (do_list) {
6420 		/* Remove "cpath" promise. */
6421 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6422 		    NULL) == -1)
6423 			err(1, "pledge");
6424 	}
6425 #endif
6426 
6427 	error = apply_unveil(got_repo_get_path(repo), do_list,
6428 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6429 	if (error)
6430 		goto done;
6431 
6432 	if (do_list)
6433 		error = list_refs(repo, refname, sort_by_time);
6434 	else if (do_delete)
6435 		error = delete_ref_by_name(repo, refname);
6436 	else if (symref_target)
6437 		error = add_symref(repo, refname, symref_target);
6438 	else {
6439 		if (obj_arg == NULL)
6440 			usage_ref();
6441 		error = add_ref(repo, refname, obj_arg);
6442 	}
6443 done:
6444 	free(refname);
6445 	if (repo) {
6446 		const struct got_error *close_err = got_repo_close(repo);
6447 		if (error == NULL)
6448 			error = close_err;
6449 	}
6450 	if (worktree)
6451 		got_worktree_close(worktree);
6452 	if (pack_fds) {
6453 		const struct got_error *pack_err =
6454 		    got_repo_pack_fds_close(pack_fds);
6455 		if (error == NULL)
6456 			error = pack_err;
6457 	}
6458 	free(cwd);
6459 	free(repo_path);
6460 	return error;
6461 }
6462 
6463 __dead static void
6464 usage_branch(void)
6465 {
6466 	fprintf(stderr, "usage: %s branch [-lnt] [-c commit] [-d name] "
6467 	    "[-r repository-path] [name]\n", getprogname());
6468 	exit(1);
6469 }
6470 
6471 static const struct got_error *
6472 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6473     struct got_reference *ref)
6474 {
6475 	const struct got_error *err = NULL;
6476 	const char *refname, *marker = "  ";
6477 	char *refstr;
6478 
6479 	refname = got_ref_get_name(ref);
6480 	if (worktree && strcmp(refname,
6481 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6482 		struct got_object_id *id = NULL;
6483 
6484 		err = got_ref_resolve(&id, repo, ref);
6485 		if (err)
6486 			return err;
6487 		if (got_object_id_cmp(id,
6488 		    got_worktree_get_base_commit_id(worktree)) == 0)
6489 			marker = "* ";
6490 		else
6491 			marker = "~ ";
6492 		free(id);
6493 	}
6494 
6495 	if (strncmp(refname, "refs/heads/", 11) == 0)
6496 		refname += 11;
6497 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6498 		refname += 18;
6499 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6500 		refname += 13;
6501 
6502 	refstr = got_ref_to_str(ref);
6503 	if (refstr == NULL)
6504 		return got_error_from_errno("got_ref_to_str");
6505 
6506 	printf("%s%s: %s\n", marker, refname, refstr);
6507 	free(refstr);
6508 	return NULL;
6509 }
6510 
6511 static const struct got_error *
6512 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6513 {
6514 	const char *refname;
6515 
6516 	if (worktree == NULL)
6517 		return got_error(GOT_ERR_NOT_WORKTREE);
6518 
6519 	refname = got_worktree_get_head_ref_name(worktree);
6520 
6521 	if (strncmp(refname, "refs/heads/", 11) == 0)
6522 		refname += 11;
6523 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6524 		refname += 18;
6525 
6526 	printf("%s\n", refname);
6527 
6528 	return NULL;
6529 }
6530 
6531 static const struct got_error *
6532 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6533     int sort_by_time)
6534 {
6535 	static const struct got_error *err = NULL;
6536 	struct got_reflist_head refs;
6537 	struct got_reflist_entry *re;
6538 	struct got_reference *temp_ref = NULL;
6539 	int rebase_in_progress, histedit_in_progress;
6540 
6541 	TAILQ_INIT(&refs);
6542 
6543 	if (worktree) {
6544 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6545 		    worktree);
6546 		if (err)
6547 			return err;
6548 
6549 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6550 		    worktree);
6551 		if (err)
6552 			return err;
6553 
6554 		if (rebase_in_progress || histedit_in_progress) {
6555 			err = got_ref_open(&temp_ref, repo,
6556 			    got_worktree_get_head_ref_name(worktree), 0);
6557 			if (err)
6558 				return err;
6559 			list_branch(repo, worktree, temp_ref);
6560 			got_ref_close(temp_ref);
6561 		}
6562 	}
6563 
6564 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6565 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6566 	    repo);
6567 	if (err)
6568 		return err;
6569 
6570 	TAILQ_FOREACH(re, &refs, entry)
6571 		list_branch(repo, worktree, re->ref);
6572 
6573 	got_ref_list_free(&refs);
6574 
6575 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6576 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6577 	    repo);
6578 	if (err)
6579 		return err;
6580 
6581 	TAILQ_FOREACH(re, &refs, entry)
6582 		list_branch(repo, worktree, re->ref);
6583 
6584 	got_ref_list_free(&refs);
6585 
6586 	return NULL;
6587 }
6588 
6589 static const struct got_error *
6590 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6591     const char *branch_name)
6592 {
6593 	const struct got_error *err = NULL;
6594 	struct got_reference *ref = NULL;
6595 	char *refname, *remote_refname = NULL;
6596 
6597 	if (strncmp(branch_name, "refs/", 5) == 0)
6598 		branch_name += 5;
6599 	if (strncmp(branch_name, "heads/", 6) == 0)
6600 		branch_name += 6;
6601 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6602 		branch_name += 8;
6603 
6604 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6605 		return got_error_from_errno("asprintf");
6606 
6607 	if (asprintf(&remote_refname, "refs/remotes/%s",
6608 	    branch_name) == -1) {
6609 		err = got_error_from_errno("asprintf");
6610 		goto done;
6611 	}
6612 
6613 	err = got_ref_open(&ref, repo, refname, 0);
6614 	if (err) {
6615 		const struct got_error *err2;
6616 		if (err->code != GOT_ERR_NOT_REF)
6617 			goto done;
6618 		/*
6619 		 * Keep 'err' intact such that if neither branch exists
6620 		 * we report "refs/heads" rather than "refs/remotes" in
6621 		 * our error message.
6622 		 */
6623 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6624 		if (err2)
6625 			goto done;
6626 		err = NULL;
6627 	}
6628 
6629 	if (worktree &&
6630 	    strcmp(got_worktree_get_head_ref_name(worktree),
6631 	    got_ref_get_name(ref)) == 0) {
6632 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6633 		    "will not delete this work tree's current branch");
6634 		goto done;
6635 	}
6636 
6637 	err = delete_ref(repo, ref);
6638 done:
6639 	if (ref)
6640 		got_ref_close(ref);
6641 	free(refname);
6642 	free(remote_refname);
6643 	return err;
6644 }
6645 
6646 static const struct got_error *
6647 add_branch(struct got_repository *repo, const char *branch_name,
6648     struct got_object_id *base_commit_id)
6649 {
6650 	const struct got_error *err = NULL;
6651 	struct got_reference *ref = NULL;
6652 	char *base_refname = NULL, *refname = NULL;
6653 
6654 	/*
6655 	 * Don't let the user create a branch name with a leading '-'.
6656 	 * While technically a valid reference name, this case is usually
6657 	 * an unintended typo.
6658 	 */
6659 	if (branch_name[0] == '-')
6660 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6661 
6662 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6663 		branch_name += 11;
6664 
6665 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6666 		err = got_error_from_errno("asprintf");
6667 		goto done;
6668 	}
6669 
6670 	err = got_ref_open(&ref, repo, refname, 0);
6671 	if (err == NULL) {
6672 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6673 		goto done;
6674 	} else if (err->code != GOT_ERR_NOT_REF)
6675 		goto done;
6676 
6677 	err = got_ref_alloc(&ref, refname, base_commit_id);
6678 	if (err)
6679 		goto done;
6680 
6681 	err = got_ref_write(ref, repo);
6682 done:
6683 	if (ref)
6684 		got_ref_close(ref);
6685 	free(base_refname);
6686 	free(refname);
6687 	return err;
6688 }
6689 
6690 static const struct got_error *
6691 cmd_branch(int argc, char *argv[])
6692 {
6693 	const struct got_error *error = NULL;
6694 	struct got_repository *repo = NULL;
6695 	struct got_worktree *worktree = NULL;
6696 	char *cwd = NULL, *repo_path = NULL;
6697 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
6698 	const char *delref = NULL, *commit_id_arg = NULL;
6699 	struct got_reference *ref = NULL;
6700 	struct got_pathlist_head paths;
6701 	struct got_pathlist_entry *pe;
6702 	struct got_object_id *commit_id = NULL;
6703 	char *commit_id_str = NULL;
6704 	int *pack_fds = NULL;
6705 
6706 	TAILQ_INIT(&paths);
6707 
6708 	while ((ch = getopt(argc, argv, "c:d:lnr:t")) != -1) {
6709 		switch (ch) {
6710 		case 'c':
6711 			commit_id_arg = optarg;
6712 			break;
6713 		case 'd':
6714 			delref = optarg;
6715 			break;
6716 		case 'l':
6717 			do_list = 1;
6718 			break;
6719 		case 'n':
6720 			do_update = 0;
6721 			break;
6722 		case 'r':
6723 			repo_path = realpath(optarg, NULL);
6724 			if (repo_path == NULL)
6725 				return got_error_from_errno2("realpath",
6726 				    optarg);
6727 			got_path_strip_trailing_slashes(repo_path);
6728 			break;
6729 		case 't':
6730 			sort_by_time = 1;
6731 			break;
6732 		default:
6733 			usage_branch();
6734 			/* NOTREACHED */
6735 		}
6736 	}
6737 
6738 	if (do_list && delref)
6739 		option_conflict('l', 'd');
6740 	if (sort_by_time && !do_list)
6741 		errx(1, "-t option requires -l option");
6742 
6743 	argc -= optind;
6744 	argv += optind;
6745 
6746 	if (!do_list && !delref && argc == 0)
6747 		do_show = 1;
6748 
6749 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
6750 		errx(1, "-c option can only be used when creating a branch");
6751 
6752 	if (do_list || delref) {
6753 		if (argc > 0)
6754 			usage_branch();
6755 	} else if (!do_show && argc != 1)
6756 		usage_branch();
6757 
6758 #ifndef PROFILE
6759 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6760 	    "sendfd unveil", NULL) == -1)
6761 		err(1, "pledge");
6762 #endif
6763 	cwd = getcwd(NULL, 0);
6764 	if (cwd == NULL) {
6765 		error = got_error_from_errno("getcwd");
6766 		goto done;
6767 	}
6768 
6769 	error = got_repo_pack_fds_open(&pack_fds);
6770 	if (error != NULL)
6771 		goto done;
6772 
6773 	if (repo_path == NULL) {
6774 		error = got_worktree_open(&worktree, cwd);
6775 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6776 			goto done;
6777 		else
6778 			error = NULL;
6779 		if (worktree) {
6780 			repo_path =
6781 			    strdup(got_worktree_get_repo_path(worktree));
6782 			if (repo_path == NULL)
6783 				error = got_error_from_errno("strdup");
6784 			if (error)
6785 				goto done;
6786 		} else {
6787 			repo_path = strdup(cwd);
6788 			if (repo_path == NULL) {
6789 				error = got_error_from_errno("strdup");
6790 				goto done;
6791 			}
6792 		}
6793 	}
6794 
6795 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6796 	if (error != NULL)
6797 		goto done;
6798 
6799 #ifndef PROFILE
6800 	if (do_list || do_show) {
6801 		/* Remove "cpath" promise. */
6802 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6803 		    NULL) == -1)
6804 			err(1, "pledge");
6805 	}
6806 #endif
6807 
6808 	error = apply_unveil(got_repo_get_path(repo), do_list,
6809 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6810 	if (error)
6811 		goto done;
6812 
6813 	if (do_show)
6814 		error = show_current_branch(repo, worktree);
6815 	else if (do_list)
6816 		error = list_branches(repo, worktree, sort_by_time);
6817 	else if (delref)
6818 		error = delete_branch(repo, worktree, delref);
6819 	else {
6820 		struct got_reflist_head refs;
6821 		TAILQ_INIT(&refs);
6822 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6823 		    NULL);
6824 		if (error)
6825 			goto done;
6826 		if (commit_id_arg == NULL)
6827 			commit_id_arg = worktree ?
6828 			    got_worktree_get_head_ref_name(worktree) :
6829 			    GOT_REF_HEAD;
6830 		error = got_repo_match_object_id(&commit_id, NULL,
6831 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6832 		got_ref_list_free(&refs);
6833 		if (error)
6834 			goto done;
6835 		error = add_branch(repo, argv[0], commit_id);
6836 		if (error)
6837 			goto done;
6838 		if (worktree && do_update) {
6839 			struct got_update_progress_arg upa;
6840 			char *branch_refname = NULL;
6841 
6842 			error = got_object_id_str(&commit_id_str, commit_id);
6843 			if (error)
6844 				goto done;
6845 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
6846 			    worktree);
6847 			if (error)
6848 				goto done;
6849 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
6850 			    == -1) {
6851 				error = got_error_from_errno("asprintf");
6852 				goto done;
6853 			}
6854 			error = got_ref_open(&ref, repo, branch_refname, 0);
6855 			free(branch_refname);
6856 			if (error)
6857 				goto done;
6858 			error = switch_head_ref(ref, commit_id, worktree,
6859 			    repo);
6860 			if (error)
6861 				goto done;
6862 			error = got_worktree_set_base_commit_id(worktree, repo,
6863 			    commit_id);
6864 			if (error)
6865 				goto done;
6866 			memset(&upa, 0, sizeof(upa));
6867 			error = got_worktree_checkout_files(worktree, &paths,
6868 			    repo, update_progress, &upa, check_cancelled,
6869 			    NULL);
6870 			if (error)
6871 				goto done;
6872 			if (upa.did_something) {
6873 				printf("Updated to %s: %s\n",
6874 				    got_worktree_get_head_ref_name(worktree),
6875 				    commit_id_str);
6876 			}
6877 			print_update_progress_stats(&upa);
6878 		}
6879 	}
6880 done:
6881 	if (ref)
6882 		got_ref_close(ref);
6883 	if (repo) {
6884 		const struct got_error *close_err = got_repo_close(repo);
6885 		if (error == NULL)
6886 			error = close_err;
6887 	}
6888 	if (worktree)
6889 		got_worktree_close(worktree);
6890 	if (pack_fds) {
6891 		const struct got_error *pack_err =
6892 		    got_repo_pack_fds_close(pack_fds);
6893 		if (error == NULL)
6894 			error = pack_err;
6895 	}
6896 	free(cwd);
6897 	free(repo_path);
6898 	free(commit_id);
6899 	free(commit_id_str);
6900 	TAILQ_FOREACH(pe, &paths, entry)
6901 		free((char *)pe->path);
6902 	got_pathlist_free(&paths);
6903 	return error;
6904 }
6905 
6906 
6907 __dead static void
6908 usage_tag(void)
6909 {
6910 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
6911 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
6912 	exit(1);
6913 }
6914 
6915 #if 0
6916 static const struct got_error *
6917 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
6918 {
6919 	const struct got_error *err = NULL;
6920 	struct got_reflist_entry *re, *se, *new;
6921 	struct got_object_id *re_id, *se_id;
6922 	struct got_tag_object *re_tag, *se_tag;
6923 	time_t re_time, se_time;
6924 
6925 	STAILQ_FOREACH(re, tags, entry) {
6926 		se = STAILQ_FIRST(sorted);
6927 		if (se == NULL) {
6928 			err = got_reflist_entry_dup(&new, re);
6929 			if (err)
6930 				return err;
6931 			STAILQ_INSERT_HEAD(sorted, new, entry);
6932 			continue;
6933 		} else {
6934 			err = got_ref_resolve(&re_id, repo, re->ref);
6935 			if (err)
6936 				break;
6937 			err = got_object_open_as_tag(&re_tag, repo, re_id);
6938 			free(re_id);
6939 			if (err)
6940 				break;
6941 			re_time = got_object_tag_get_tagger_time(re_tag);
6942 			got_object_tag_close(re_tag);
6943 		}
6944 
6945 		while (se) {
6946 			err = got_ref_resolve(&se_id, repo, re->ref);
6947 			if (err)
6948 				break;
6949 			err = got_object_open_as_tag(&se_tag, repo, se_id);
6950 			free(se_id);
6951 			if (err)
6952 				break;
6953 			se_time = got_object_tag_get_tagger_time(se_tag);
6954 			got_object_tag_close(se_tag);
6955 
6956 			if (se_time > re_time) {
6957 				err = got_reflist_entry_dup(&new, re);
6958 				if (err)
6959 					return err;
6960 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
6961 				break;
6962 			}
6963 			se = STAILQ_NEXT(se, entry);
6964 			continue;
6965 		}
6966 	}
6967 done:
6968 	return err;
6969 }
6970 #endif
6971 
6972 static const struct got_error *
6973 get_tag_refname(char **refname, const char *tag_name)
6974 {
6975 	const struct got_error *err;
6976 
6977 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
6978 		*refname = strdup(tag_name);
6979 		if (*refname == NULL)
6980 			return got_error_from_errno("strdup");
6981 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
6982 		err = got_error_from_errno("asprintf");
6983 		*refname = NULL;
6984 		return err;
6985 	}
6986 
6987 	return NULL;
6988 }
6989 
6990 static const struct got_error *
6991 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
6992     const char *allowed_signers, const char *revoked_signers, int verbosity)
6993 {
6994 	static const struct got_error *err = NULL;
6995 	struct got_reflist_head refs;
6996 	struct got_reflist_entry *re;
6997 	char *wanted_refname = NULL;
6998 	int bad_sigs = 0;
6999 
7000 	TAILQ_INIT(&refs);
7001 
7002 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
7003 	if (err)
7004 		return err;
7005 
7006 	if (tag_name) {
7007 		struct got_reference *ref;
7008 		err = get_tag_refname(&wanted_refname, tag_name);
7009 		if (err)
7010 			goto done;
7011 		/* Wanted tag reference should exist. */
7012 		err = got_ref_open(&ref, repo, wanted_refname, 0);
7013 		if (err)
7014 			goto done;
7015 		got_ref_close(ref);
7016 	}
7017 
7018 	TAILQ_FOREACH(re, &refs, entry) {
7019 		const char *refname;
7020 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
7021 		char datebuf[26];
7022 		const char *tagger, *ssh_sig = NULL;
7023 		char *sig_msg = NULL;
7024 		time_t tagger_time;
7025 		struct got_object_id *id;
7026 		struct got_tag_object *tag;
7027 		struct got_commit_object *commit = NULL;
7028 
7029 		refname = got_ref_get_name(re->ref);
7030 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
7031 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
7032 			continue;
7033 		refname += 10;
7034 		refstr = got_ref_to_str(re->ref);
7035 		if (refstr == NULL) {
7036 			err = got_error_from_errno("got_ref_to_str");
7037 			break;
7038 		}
7039 
7040 		err = got_ref_resolve(&id, repo, re->ref);
7041 		if (err)
7042 			break;
7043 		err = got_object_open_as_tag(&tag, repo, id);
7044 		if (err) {
7045 			if (err->code != GOT_ERR_OBJ_TYPE) {
7046 				free(id);
7047 				break;
7048 			}
7049 			/* "lightweight" tag */
7050 			err = got_object_open_as_commit(&commit, repo, id);
7051 			if (err) {
7052 				free(id);
7053 				break;
7054 			}
7055 			tagger = got_object_commit_get_committer(commit);
7056 			tagger_time =
7057 			    got_object_commit_get_committer_time(commit);
7058 			err = got_object_id_str(&id_str, id);
7059 			free(id);
7060 			if (err)
7061 				break;
7062 		} else {
7063 			free(id);
7064 			tagger = got_object_tag_get_tagger(tag);
7065 			tagger_time = got_object_tag_get_tagger_time(tag);
7066 			err = got_object_id_str(&id_str,
7067 			    got_object_tag_get_object_id(tag));
7068 			if (err)
7069 				break;
7070 		}
7071 
7072 		if (tag && verify_tags) {
7073 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7074 			    got_object_tag_get_message(tag));
7075 			if (ssh_sig && allowed_signers == NULL) {
7076 				err = got_error_msg(
7077 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7078 				    "SSH signature verification requires "
7079 				        "setting allowed_signers in "
7080 				        "got.conf(5)");
7081 				break;
7082 			}
7083 		}
7084 
7085 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7086 		free(refstr);
7087 		printf("from: %s\n", tagger);
7088 		datestr = get_datestr(&tagger_time, datebuf);
7089 		if (datestr)
7090 			printf("date: %s UTC\n", datestr);
7091 		if (commit)
7092 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7093 		else {
7094 			switch (got_object_tag_get_object_type(tag)) {
7095 			case GOT_OBJ_TYPE_BLOB:
7096 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7097 				    id_str);
7098 				break;
7099 			case GOT_OBJ_TYPE_TREE:
7100 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7101 				    id_str);
7102 				break;
7103 			case GOT_OBJ_TYPE_COMMIT:
7104 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7105 				    id_str);
7106 				break;
7107 			case GOT_OBJ_TYPE_TAG:
7108 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7109 				    id_str);
7110 				break;
7111 			default:
7112 				break;
7113 			}
7114 		}
7115 		free(id_str);
7116 
7117 		if (ssh_sig) {
7118 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7119 				allowed_signers, revoked_signers, verbosity);
7120 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7121 				bad_sigs = 1;
7122 			else if (err)
7123 				break;
7124 			printf("signature: %s", sig_msg);
7125 			free(sig_msg);
7126 			sig_msg = NULL;
7127 		}
7128 
7129 		if (commit) {
7130 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7131 			if (err)
7132 				break;
7133 			got_object_commit_close(commit);
7134 		} else {
7135 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7136 			got_object_tag_close(tag);
7137 			if (tagmsg0 == NULL) {
7138 				err = got_error_from_errno("strdup");
7139 				break;
7140 			}
7141 		}
7142 
7143 		tagmsg = tagmsg0;
7144 		do {
7145 			line = strsep(&tagmsg, "\n");
7146 			if (line)
7147 				printf(" %s\n", line);
7148 		} while (line);
7149 		free(tagmsg0);
7150 	}
7151 done:
7152 	got_ref_list_free(&refs);
7153 	free(wanted_refname);
7154 
7155 	if (err == NULL && bad_sigs)
7156 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7157 	return err;
7158 }
7159 
7160 static const struct got_error *
7161 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7162     const char *tag_name, const char *repo_path)
7163 {
7164 	const struct got_error *err = NULL;
7165 	char *template = NULL, *initial_content = NULL;
7166 	char *editor = NULL;
7167 	int initial_content_len;
7168 	int fd = -1;
7169 
7170 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7171 		err = got_error_from_errno("asprintf");
7172 		goto done;
7173 	}
7174 
7175 	initial_content_len = asprintf(&initial_content,
7176 	    "\n# tagging commit %s as %s\n",
7177 	    commit_id_str, tag_name);
7178 	if (initial_content_len == -1) {
7179 		err = got_error_from_errno("asprintf");
7180 		goto done;
7181 	}
7182 
7183 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
7184 	if (err)
7185 		goto done;
7186 
7187 	if (write(fd, initial_content, initial_content_len) == -1) {
7188 		err = got_error_from_errno2("write", *tagmsg_path);
7189 		goto done;
7190 	}
7191 
7192 	err = get_editor(&editor);
7193 	if (err)
7194 		goto done;
7195 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7196 	    initial_content_len, 1);
7197 done:
7198 	free(initial_content);
7199 	free(template);
7200 	free(editor);
7201 
7202 	if (fd != -1 && close(fd) == -1 && err == NULL)
7203 		err = got_error_from_errno2("close", *tagmsg_path);
7204 
7205 	if (err) {
7206 		free(*tagmsg);
7207 		*tagmsg = NULL;
7208 	}
7209 	return err;
7210 }
7211 
7212 static const struct got_error *
7213 add_tag(struct got_repository *repo, const char *tagger,
7214     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7215     const char *signer_id, int verbosity)
7216 {
7217 	const struct got_error *err = NULL;
7218 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7219 	char *label = NULL, *commit_id_str = NULL;
7220 	struct got_reference *ref = NULL;
7221 	char *refname = NULL, *tagmsg = NULL;
7222 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7223 	int preserve_tagmsg = 0;
7224 	struct got_reflist_head refs;
7225 
7226 	TAILQ_INIT(&refs);
7227 
7228 	/*
7229 	 * Don't let the user create a tag name with a leading '-'.
7230 	 * While technically a valid reference name, this case is usually
7231 	 * an unintended typo.
7232 	 */
7233 	if (tag_name[0] == '-')
7234 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7235 
7236 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7237 	if (err)
7238 		goto done;
7239 
7240 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7241 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7242 	if (err)
7243 		goto done;
7244 
7245 	err = got_object_id_str(&commit_id_str, commit_id);
7246 	if (err)
7247 		goto done;
7248 
7249 	err = get_tag_refname(&refname, tag_name);
7250 	if (err)
7251 		goto done;
7252 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7253 		tag_name += 10;
7254 
7255 	err = got_ref_open(&ref, repo, refname, 0);
7256 	if (err == NULL) {
7257 		err = got_error(GOT_ERR_TAG_EXISTS);
7258 		goto done;
7259 	} else if (err->code != GOT_ERR_NOT_REF)
7260 		goto done;
7261 
7262 	if (tagmsg_arg == NULL) {
7263 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7264 		    tag_name, got_repo_get_path(repo));
7265 		if (err) {
7266 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7267 			    tagmsg_path != NULL)
7268 				preserve_tagmsg = 1;
7269 			goto done;
7270 		}
7271 		/* Editor is done; we can now apply unveil(2) */
7272 		err = got_sigs_apply_unveil();
7273 		if (err)
7274 			goto done;
7275 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
7276 		if (err)
7277 			goto done;
7278 	}
7279 
7280 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7281 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7282 	    verbosity);
7283 	if (err) {
7284 		if (tagmsg_path)
7285 			preserve_tagmsg = 1;
7286 		goto done;
7287 	}
7288 
7289 	err = got_ref_alloc(&ref, refname, tag_id);
7290 	if (err) {
7291 		if (tagmsg_path)
7292 			preserve_tagmsg = 1;
7293 		goto done;
7294 	}
7295 
7296 	err = got_ref_write(ref, repo);
7297 	if (err) {
7298 		if (tagmsg_path)
7299 			preserve_tagmsg = 1;
7300 		goto done;
7301 	}
7302 
7303 	err = got_object_id_str(&tag_id_str, tag_id);
7304 	if (err) {
7305 		if (tagmsg_path)
7306 			preserve_tagmsg = 1;
7307 		goto done;
7308 	}
7309 	printf("Created tag %s\n", tag_id_str);
7310 done:
7311 	if (preserve_tagmsg) {
7312 		fprintf(stderr, "%s: tag message preserved in %s\n",
7313 		    getprogname(), tagmsg_path);
7314 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7315 		err = got_error_from_errno2("unlink", tagmsg_path);
7316 	free(tag_id_str);
7317 	if (ref)
7318 		got_ref_close(ref);
7319 	free(commit_id);
7320 	free(commit_id_str);
7321 	free(refname);
7322 	free(tagmsg);
7323 	free(tagmsg_path);
7324 	got_ref_list_free(&refs);
7325 	return err;
7326 }
7327 
7328 static const struct got_error *
7329 cmd_tag(int argc, char *argv[])
7330 {
7331 	const struct got_error *error = NULL;
7332 	struct got_repository *repo = NULL;
7333 	struct got_worktree *worktree = NULL;
7334 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7335 	char *gitconfig_path = NULL, *tagger = NULL;
7336 	char *allowed_signers = NULL, *revoked_signers = NULL;
7337 	char *signer_id = NULL;
7338 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7339 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7340 	int *pack_fds = NULL;
7341 
7342 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
7343 		switch (ch) {
7344 		case 'c':
7345 			commit_id_arg = optarg;
7346 			break;
7347 		case 'l':
7348 			do_list = 1;
7349 			break;
7350 		case 'm':
7351 			tagmsg = optarg;
7352 			break;
7353 		case 'r':
7354 			repo_path = realpath(optarg, NULL);
7355 			if (repo_path == NULL) {
7356 				error = got_error_from_errno2("realpath",
7357 				    optarg);
7358 				goto done;
7359 			}
7360 			got_path_strip_trailing_slashes(repo_path);
7361 			break;
7362 		case 's':
7363 			signer_id = strdup(optarg);
7364 			if (signer_id == NULL) {
7365 				error = got_error_from_errno("strdup");
7366 				goto done;
7367 			}
7368 			break;
7369 		case 'V':
7370 			verify_tags = 1;
7371 			break;
7372 		case 'v':
7373 			if (verbosity < 0)
7374 				verbosity = 0;
7375 			else if (verbosity < 3)
7376 				verbosity++;
7377 			break;
7378 		default:
7379 			usage_tag();
7380 			/* NOTREACHED */
7381 		}
7382 	}
7383 
7384 	argc -= optind;
7385 	argv += optind;
7386 
7387 	if (do_list || verify_tags) {
7388 		if (commit_id_arg != NULL)
7389 			errx(1,
7390 			    "-c option can only be used when creating a tag");
7391 		if (tagmsg) {
7392 			if (do_list)
7393 				option_conflict('l', 'm');
7394 			else
7395 				option_conflict('V', 'm');
7396 		}
7397 		if (signer_id) {
7398 			if (do_list)
7399 				option_conflict('l', 's');
7400 			else
7401 				option_conflict('V', 's');
7402 		}
7403 		if (argc > 1)
7404 			usage_tag();
7405 	} else if (argc != 1)
7406 		usage_tag();
7407 
7408 	if (argc == 1)
7409 		tag_name = argv[0];
7410 
7411 #ifndef PROFILE
7412 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7413 	    "sendfd unveil", NULL) == -1)
7414 		err(1, "pledge");
7415 #endif
7416 	cwd = getcwd(NULL, 0);
7417 	if (cwd == NULL) {
7418 		error = got_error_from_errno("getcwd");
7419 		goto done;
7420 	}
7421 
7422 	error = got_repo_pack_fds_open(&pack_fds);
7423 	if (error != NULL)
7424 		goto done;
7425 
7426 	if (repo_path == NULL) {
7427 		error = got_worktree_open(&worktree, cwd);
7428 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7429 			goto done;
7430 		else
7431 			error = NULL;
7432 		if (worktree) {
7433 			repo_path =
7434 			    strdup(got_worktree_get_repo_path(worktree));
7435 			if (repo_path == NULL)
7436 				error = got_error_from_errno("strdup");
7437 			if (error)
7438 				goto done;
7439 		} else {
7440 			repo_path = strdup(cwd);
7441 			if (repo_path == NULL) {
7442 				error = got_error_from_errno("strdup");
7443 				goto done;
7444 			}
7445 		}
7446 	}
7447 
7448 	if (do_list || verify_tags) {
7449 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7450 		if (error != NULL)
7451 			goto done;
7452 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7453 		if (error)
7454 			goto done;
7455 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7456 		if (error)
7457 			goto done;
7458 		if (worktree) {
7459 			/* Release work tree lock. */
7460 			got_worktree_close(worktree);
7461 			worktree = NULL;
7462 		}
7463 
7464 		/*
7465 		 * Remove "cpath" promise unless needed for signature tmpfile
7466 		 * creation.
7467 		 */
7468 		if (verify_tags)
7469 		 	got_sigs_apply_unveil();
7470 		else {
7471 #ifndef PROFILE
7472 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7473 			    "unveil", NULL) == -1)
7474 				err(1, "pledge");
7475 #endif
7476 		}
7477 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7478 		if (error)
7479 			goto done;
7480 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7481 		    revoked_signers, verbosity);
7482 	} else {
7483 		error = get_gitconfig_path(&gitconfig_path);
7484 		if (error)
7485 			goto done;
7486 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7487 		    pack_fds);
7488 		if (error != NULL)
7489 			goto done;
7490 
7491 		error = get_author(&tagger, repo, worktree);
7492 		if (error)
7493 			goto done;
7494 		if (signer_id == NULL) {
7495 			error = get_signer_id(&signer_id, repo, worktree);
7496 			if (error)
7497 				goto done;
7498 		}
7499 
7500 		if (tagmsg) {
7501 			if (signer_id) {
7502 				error = got_sigs_apply_unveil();
7503 				if (error)
7504 					goto done;
7505 			}
7506 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7507 			if (error)
7508 				goto done;
7509 		}
7510 
7511 		if (commit_id_arg == NULL) {
7512 			struct got_reference *head_ref;
7513 			struct got_object_id *commit_id;
7514 			error = got_ref_open(&head_ref, repo,
7515 			    worktree ? got_worktree_get_head_ref_name(worktree)
7516 			    : GOT_REF_HEAD, 0);
7517 			if (error)
7518 				goto done;
7519 			error = got_ref_resolve(&commit_id, repo, head_ref);
7520 			got_ref_close(head_ref);
7521 			if (error)
7522 				goto done;
7523 			error = got_object_id_str(&commit_id_str, commit_id);
7524 			free(commit_id);
7525 			if (error)
7526 				goto done;
7527 		}
7528 
7529 		if (worktree) {
7530 			/* Release work tree lock. */
7531 			got_worktree_close(worktree);
7532 			worktree = NULL;
7533 		}
7534 
7535 		error = add_tag(repo, tagger, tag_name,
7536 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7537 		    signer_id, verbosity);
7538 	}
7539 done:
7540 	if (repo) {
7541 		const struct got_error *close_err = got_repo_close(repo);
7542 		if (error == NULL)
7543 			error = close_err;
7544 	}
7545 	if (worktree)
7546 		got_worktree_close(worktree);
7547 	if (pack_fds) {
7548 		const struct got_error *pack_err =
7549 		    got_repo_pack_fds_close(pack_fds);
7550 		if (error == NULL)
7551 			error = pack_err;
7552 	}
7553 	free(cwd);
7554 	free(repo_path);
7555 	free(gitconfig_path);
7556 	free(commit_id_str);
7557 	free(tagger);
7558 	free(allowed_signers);
7559 	free(revoked_signers);
7560 	free(signer_id);
7561 	return error;
7562 }
7563 
7564 __dead static void
7565 usage_add(void)
7566 {
7567 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
7568 	exit(1);
7569 }
7570 
7571 static const struct got_error *
7572 add_progress(void *arg, unsigned char status, const char *path)
7573 {
7574 	while (path[0] == '/')
7575 		path++;
7576 	printf("%c  %s\n", status, path);
7577 	return NULL;
7578 }
7579 
7580 static const struct got_error *
7581 cmd_add(int argc, char *argv[])
7582 {
7583 	const struct got_error *error = NULL;
7584 	struct got_repository *repo = NULL;
7585 	struct got_worktree *worktree = NULL;
7586 	char *cwd = NULL;
7587 	struct got_pathlist_head paths;
7588 	struct got_pathlist_entry *pe;
7589 	int ch, can_recurse = 0, no_ignores = 0;
7590 	int *pack_fds = NULL;
7591 
7592 	TAILQ_INIT(&paths);
7593 
7594 	while ((ch = getopt(argc, argv, "IR")) != -1) {
7595 		switch (ch) {
7596 		case 'I':
7597 			no_ignores = 1;
7598 			break;
7599 		case 'R':
7600 			can_recurse = 1;
7601 			break;
7602 		default:
7603 			usage_add();
7604 			/* NOTREACHED */
7605 		}
7606 	}
7607 
7608 	argc -= optind;
7609 	argv += optind;
7610 
7611 #ifndef PROFILE
7612 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7613 	    NULL) == -1)
7614 		err(1, "pledge");
7615 #endif
7616 	if (argc < 1)
7617 		usage_add();
7618 
7619 	cwd = getcwd(NULL, 0);
7620 	if (cwd == NULL) {
7621 		error = got_error_from_errno("getcwd");
7622 		goto done;
7623 	}
7624 
7625 	error = got_repo_pack_fds_open(&pack_fds);
7626 	if (error != NULL)
7627 		goto done;
7628 
7629 	error = got_worktree_open(&worktree, cwd);
7630 	if (error) {
7631 		if (error->code == GOT_ERR_NOT_WORKTREE)
7632 			error = wrap_not_worktree_error(error, "add", cwd);
7633 		goto done;
7634 	}
7635 
7636 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7637 	    NULL, pack_fds);
7638 	if (error != NULL)
7639 		goto done;
7640 
7641 	error = apply_unveil(got_repo_get_path(repo), 1,
7642 	    got_worktree_get_root_path(worktree));
7643 	if (error)
7644 		goto done;
7645 
7646 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7647 	if (error)
7648 		goto done;
7649 
7650 	if (!can_recurse) {
7651 		char *ondisk_path;
7652 		struct stat sb;
7653 		TAILQ_FOREACH(pe, &paths, entry) {
7654 			if (asprintf(&ondisk_path, "%s/%s",
7655 			    got_worktree_get_root_path(worktree),
7656 			    pe->path) == -1) {
7657 				error = got_error_from_errno("asprintf");
7658 				goto done;
7659 			}
7660 			if (lstat(ondisk_path, &sb) == -1) {
7661 				if (errno == ENOENT) {
7662 					free(ondisk_path);
7663 					continue;
7664 				}
7665 				error = got_error_from_errno2("lstat",
7666 				    ondisk_path);
7667 				free(ondisk_path);
7668 				goto done;
7669 			}
7670 			free(ondisk_path);
7671 			if (S_ISDIR(sb.st_mode)) {
7672 				error = got_error_msg(GOT_ERR_BAD_PATH,
7673 				    "adding directories requires -R option");
7674 				goto done;
7675 			}
7676 		}
7677 	}
7678 
7679 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
7680 	    NULL, repo, no_ignores);
7681 done:
7682 	if (repo) {
7683 		const struct got_error *close_err = got_repo_close(repo);
7684 		if (error == NULL)
7685 			error = close_err;
7686 	}
7687 	if (worktree)
7688 		got_worktree_close(worktree);
7689 	if (pack_fds) {
7690 		const struct got_error *pack_err =
7691 		    got_repo_pack_fds_close(pack_fds);
7692 		if (error == NULL)
7693 			error = pack_err;
7694 	}
7695 	TAILQ_FOREACH(pe, &paths, entry)
7696 		free((char *)pe->path);
7697 	got_pathlist_free(&paths);
7698 	free(cwd);
7699 	return error;
7700 }
7701 
7702 __dead static void
7703 usage_remove(void)
7704 {
7705 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
7706 	    getprogname());
7707 	exit(1);
7708 }
7709 
7710 static const struct got_error *
7711 print_remove_status(void *arg, unsigned char status,
7712     unsigned char staged_status, const char *path)
7713 {
7714 	while (path[0] == '/')
7715 		path++;
7716 	if (status == GOT_STATUS_NONEXISTENT)
7717 		return NULL;
7718 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7719 		status = GOT_STATUS_NO_CHANGE;
7720 	printf("%c%c %s\n", status, staged_status, path);
7721 	return NULL;
7722 }
7723 
7724 static const struct got_error *
7725 cmd_remove(int argc, char *argv[])
7726 {
7727 	const struct got_error *error = NULL;
7728 	struct got_worktree *worktree = NULL;
7729 	struct got_repository *repo = NULL;
7730 	const char *status_codes = NULL;
7731 	char *cwd = NULL;
7732 	struct got_pathlist_head paths;
7733 	struct got_pathlist_entry *pe;
7734 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
7735 	int ignore_missing_paths = 0;
7736 	int *pack_fds = NULL;
7737 
7738 	TAILQ_INIT(&paths);
7739 
7740 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
7741 		switch (ch) {
7742 		case 'f':
7743 			delete_local_mods = 1;
7744 			ignore_missing_paths = 1;
7745 			break;
7746 		case 'k':
7747 			keep_on_disk = 1;
7748 			break;
7749 		case 'R':
7750 			can_recurse = 1;
7751 			break;
7752 		case 's':
7753 			for (i = 0; i < strlen(optarg); i++) {
7754 				switch (optarg[i]) {
7755 				case GOT_STATUS_MODIFY:
7756 					delete_local_mods = 1;
7757 					break;
7758 				case GOT_STATUS_MISSING:
7759 					ignore_missing_paths = 1;
7760 					break;
7761 				default:
7762 					errx(1, "invalid status code '%c'",
7763 					    optarg[i]);
7764 				}
7765 			}
7766 			status_codes = optarg;
7767 			break;
7768 		default:
7769 			usage_remove();
7770 			/* NOTREACHED */
7771 		}
7772 	}
7773 
7774 	argc -= optind;
7775 	argv += optind;
7776 
7777 #ifndef PROFILE
7778 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7779 	    NULL) == -1)
7780 		err(1, "pledge");
7781 #endif
7782 	if (argc < 1)
7783 		usage_remove();
7784 
7785 	cwd = getcwd(NULL, 0);
7786 	if (cwd == NULL) {
7787 		error = got_error_from_errno("getcwd");
7788 		goto done;
7789 	}
7790 
7791 	error = got_repo_pack_fds_open(&pack_fds);
7792 	if (error != NULL)
7793 		goto done;
7794 
7795 	error = got_worktree_open(&worktree, cwd);
7796 	if (error) {
7797 		if (error->code == GOT_ERR_NOT_WORKTREE)
7798 			error = wrap_not_worktree_error(error, "remove", cwd);
7799 		goto done;
7800 	}
7801 
7802 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7803 	    NULL, pack_fds);
7804 	if (error)
7805 		goto done;
7806 
7807 	error = apply_unveil(got_repo_get_path(repo), 1,
7808 	    got_worktree_get_root_path(worktree));
7809 	if (error)
7810 		goto done;
7811 
7812 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7813 	if (error)
7814 		goto done;
7815 
7816 	if (!can_recurse) {
7817 		char *ondisk_path;
7818 		struct stat sb;
7819 		TAILQ_FOREACH(pe, &paths, entry) {
7820 			if (asprintf(&ondisk_path, "%s/%s",
7821 			    got_worktree_get_root_path(worktree),
7822 			    pe->path) == -1) {
7823 				error = got_error_from_errno("asprintf");
7824 				goto done;
7825 			}
7826 			if (lstat(ondisk_path, &sb) == -1) {
7827 				if (errno == ENOENT) {
7828 					free(ondisk_path);
7829 					continue;
7830 				}
7831 				error = got_error_from_errno2("lstat",
7832 				    ondisk_path);
7833 				free(ondisk_path);
7834 				goto done;
7835 			}
7836 			free(ondisk_path);
7837 			if (S_ISDIR(sb.st_mode)) {
7838 				error = got_error_msg(GOT_ERR_BAD_PATH,
7839 				    "removing directories requires -R option");
7840 				goto done;
7841 			}
7842 		}
7843 	}
7844 
7845 	error = got_worktree_schedule_delete(worktree, &paths,
7846 	    delete_local_mods, status_codes, print_remove_status, NULL,
7847 	    repo, keep_on_disk, ignore_missing_paths);
7848 done:
7849 	if (repo) {
7850 		const struct got_error *close_err = got_repo_close(repo);
7851 		if (error == NULL)
7852 			error = close_err;
7853 	}
7854 	if (worktree)
7855 		got_worktree_close(worktree);
7856 	if (pack_fds) {
7857 		const struct got_error *pack_err =
7858 		    got_repo_pack_fds_close(pack_fds);
7859 		if (error == NULL)
7860 			error = pack_err;
7861 	}
7862 	TAILQ_FOREACH(pe, &paths, entry)
7863 		free((char *)pe->path);
7864 	got_pathlist_free(&paths);
7865 	free(cwd);
7866 	return error;
7867 }
7868 
7869 __dead static void
7870 usage_patch(void)
7871 {
7872 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
7873 	    "[patchfile]\n", getprogname());
7874 	exit(1);
7875 }
7876 
7877 static const struct got_error *
7878 patch_from_stdin(int *patchfd)
7879 {
7880 	const struct got_error *err = NULL;
7881 	ssize_t r;
7882 	char buf[BUFSIZ];
7883 	sig_t sighup, sigint, sigquit;
7884 
7885 	*patchfd = got_opentempfd();
7886 	if (*patchfd == -1)
7887 		return got_error_from_errno("got_opentempfd");
7888 
7889 	sighup = signal(SIGHUP, SIG_DFL);
7890 	sigint = signal(SIGINT, SIG_DFL);
7891 	sigquit = signal(SIGQUIT, SIG_DFL);
7892 
7893 	for (;;) {
7894 		r = read(0, buf, sizeof(buf));
7895 		if (r == -1) {
7896 			err = got_error_from_errno("read");
7897 			break;
7898 		}
7899 		if (r == 0)
7900 			break;
7901 		if (write(*patchfd, buf, r) == -1) {
7902 			err = got_error_from_errno("write");
7903 			break;
7904 		}
7905 	}
7906 
7907 	signal(SIGHUP, sighup);
7908 	signal(SIGINT, sigint);
7909 	signal(SIGQUIT, sigquit);
7910 
7911 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
7912 		err = got_error_from_errno("lseek");
7913 
7914 	if (err != NULL) {
7915 		close(*patchfd);
7916 		*patchfd = -1;
7917 	}
7918 
7919 	return err;
7920 }
7921 
7922 static const struct got_error *
7923 patch_progress(void *arg, const char *old, const char *new,
7924     unsigned char status, const struct got_error *error, int old_from,
7925     int old_lines, int new_from, int new_lines, int offset,
7926     int ws_mangled, const struct got_error *hunk_err)
7927 {
7928 	const char *path = new == NULL ? old : new;
7929 
7930 	while (*path == '/')
7931 		path++;
7932 
7933 	if (status != 0)
7934 		printf("%c  %s\n", status, path);
7935 
7936 	if (error != NULL)
7937 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
7938 
7939 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
7940 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
7941 		    old_lines, new_from, new_lines);
7942 		if (hunk_err != NULL)
7943 			printf("%s\n", hunk_err->msg);
7944 		else if (offset != 0)
7945 			printf("applied with offset %d\n", offset);
7946 		else
7947 			printf("hunk contains mangled whitespace\n");
7948 	}
7949 
7950 	return NULL;
7951 }
7952 
7953 static const struct got_error *
7954 cmd_patch(int argc, char *argv[])
7955 {
7956 	const struct got_error *error = NULL, *close_error = NULL;
7957 	struct got_worktree *worktree = NULL;
7958 	struct got_repository *repo = NULL;
7959 	struct got_reflist_head refs;
7960 	struct got_object_id *commit_id = NULL;
7961 	const char *commit_id_str = NULL;
7962 	struct stat sb;
7963 	const char *errstr;
7964 	char *cwd = NULL;
7965 	int ch, nop = 0, strip = -1, reverse = 0;
7966 	int patchfd;
7967 	int *pack_fds = NULL;
7968 
7969 	TAILQ_INIT(&refs);
7970 
7971 #ifndef PROFILE
7972 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
7973 	    "unveil", NULL) == -1)
7974 		err(1, "pledge");
7975 #endif
7976 
7977 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
7978 		switch (ch) {
7979 		case 'c':
7980 			commit_id_str = optarg;
7981 			break;
7982 		case 'n':
7983 			nop = 1;
7984 			break;
7985 		case 'p':
7986 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
7987 			if (errstr != NULL)
7988 				errx(1, "pathname strip count is %s: %s",
7989 				     errstr, optarg);
7990 			break;
7991 		case 'R':
7992 			reverse = 1;
7993 			break;
7994 		default:
7995 			usage_patch();
7996 			/* NOTREACHED */
7997 		}
7998 	}
7999 
8000 	argc -= optind;
8001 	argv += optind;
8002 
8003 	if (argc == 0) {
8004 		error = patch_from_stdin(&patchfd);
8005 		if (error)
8006 			return error;
8007 	} else if (argc == 1) {
8008 		patchfd = open(argv[0], O_RDONLY);
8009 		if (patchfd == -1) {
8010 			error = got_error_from_errno2("open", argv[0]);
8011 			return error;
8012 		}
8013 		if (fstat(patchfd, &sb) == -1) {
8014 			error = got_error_from_errno2("fstat", argv[0]);
8015 			goto done;
8016 		}
8017 		if (!S_ISREG(sb.st_mode)) {
8018 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
8019 			goto done;
8020 		}
8021 	} else
8022 		usage_patch();
8023 
8024 	if ((cwd = getcwd(NULL, 0)) == NULL) {
8025 		error = got_error_from_errno("getcwd");
8026 		goto done;
8027 	}
8028 
8029 	error = got_repo_pack_fds_open(&pack_fds);
8030 	if (error != NULL)
8031 		goto done;
8032 
8033 	error = got_worktree_open(&worktree, cwd);
8034 	if (error != NULL)
8035 		goto done;
8036 
8037 	const char *repo_path = got_worktree_get_repo_path(worktree);
8038 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8039 	if (error != NULL)
8040 		goto done;
8041 
8042 	error = apply_unveil(got_repo_get_path(repo), 0,
8043 	    got_worktree_get_root_path(worktree));
8044 	if (error != NULL)
8045 		goto done;
8046 
8047 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8048 	if (error)
8049 		goto done;
8050 
8051 	if (commit_id_str != NULL) {
8052 		error = got_repo_match_object_id(&commit_id, NULL,
8053 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
8054 		if (error)
8055 			goto done;
8056 	}
8057 
8058 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
8059 	    commit_id, &patch_progress, NULL, check_cancelled, NULL);
8060 
8061 done:
8062 	got_ref_list_free(&refs);
8063 	free(commit_id);
8064 	if (repo) {
8065 		close_error = got_repo_close(repo);
8066 		if (error == NULL)
8067 			error = close_error;
8068 	}
8069 	if (worktree != NULL) {
8070 		close_error = got_worktree_close(worktree);
8071 		if (error == NULL)
8072 			error = close_error;
8073 	}
8074 	if (pack_fds) {
8075 		const struct got_error *pack_err =
8076 		    got_repo_pack_fds_close(pack_fds);
8077 		if (error == NULL)
8078 			error = pack_err;
8079 	}
8080 	free(cwd);
8081 	return error;
8082 }
8083 
8084 __dead static void
8085 usage_revert(void)
8086 {
8087 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
8088 	    getprogname());
8089 	exit(1);
8090 }
8091 
8092 static const struct got_error *
8093 revert_progress(void *arg, unsigned char status, const char *path)
8094 {
8095 	if (status == GOT_STATUS_UNVERSIONED)
8096 		return NULL;
8097 
8098 	while (path[0] == '/')
8099 		path++;
8100 	printf("%c  %s\n", status, path);
8101 	return NULL;
8102 }
8103 
8104 struct choose_patch_arg {
8105 	FILE *patch_script_file;
8106 	const char *action;
8107 };
8108 
8109 static const struct got_error *
8110 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8111     int nchanges, const char *action)
8112 {
8113 	const struct got_error *err;
8114 	char *line = NULL;
8115 	size_t linesize = 0;
8116 	ssize_t linelen;
8117 
8118 	switch (status) {
8119 	case GOT_STATUS_ADD:
8120 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8121 		break;
8122 	case GOT_STATUS_DELETE:
8123 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8124 		break;
8125 	case GOT_STATUS_MODIFY:
8126 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8127 			return got_error_from_errno("fseek");
8128 		printf(GOT_COMMIT_SEP_STR);
8129 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8130 			printf("%s", line);
8131 		if (linelen == -1 && ferror(patch_file)) {
8132 			err = got_error_from_errno("getline");
8133 			free(line);
8134 			return err;
8135 		}
8136 		free(line);
8137 		printf(GOT_COMMIT_SEP_STR);
8138 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8139 		    path, n, nchanges, action);
8140 		break;
8141 	default:
8142 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8143 	}
8144 
8145 	fflush(stdout);
8146 	return NULL;
8147 }
8148 
8149 static const struct got_error *
8150 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8151     FILE *patch_file, int n, int nchanges)
8152 {
8153 	const struct got_error *err = NULL;
8154 	char *line = NULL;
8155 	size_t linesize = 0;
8156 	ssize_t linelen;
8157 	int resp = ' ';
8158 	struct choose_patch_arg *a = arg;
8159 
8160 	*choice = GOT_PATCH_CHOICE_NONE;
8161 
8162 	if (a->patch_script_file) {
8163 		char *nl;
8164 		err = show_change(status, path, patch_file, n, nchanges,
8165 		    a->action);
8166 		if (err)
8167 			return err;
8168 		linelen = getline(&line, &linesize, a->patch_script_file);
8169 		if (linelen == -1) {
8170 			if (ferror(a->patch_script_file))
8171 				return got_error_from_errno("getline");
8172 			return NULL;
8173 		}
8174 		nl = strchr(line, '\n');
8175 		if (nl)
8176 			*nl = '\0';
8177 		if (strcmp(line, "y") == 0) {
8178 			*choice = GOT_PATCH_CHOICE_YES;
8179 			printf("y\n");
8180 		} else if (strcmp(line, "n") == 0) {
8181 			*choice = GOT_PATCH_CHOICE_NO;
8182 			printf("n\n");
8183 		} else if (strcmp(line, "q") == 0 &&
8184 		    status == GOT_STATUS_MODIFY) {
8185 			*choice = GOT_PATCH_CHOICE_QUIT;
8186 			printf("q\n");
8187 		} else
8188 			printf("invalid response '%s'\n", line);
8189 		free(line);
8190 		return NULL;
8191 	}
8192 
8193 	while (resp != 'y' && resp != 'n' && resp != 'q') {
8194 		err = show_change(status, path, patch_file, n, nchanges,
8195 		    a->action);
8196 		if (err)
8197 			return err;
8198 		resp = getchar();
8199 		if (resp == '\n')
8200 			resp = getchar();
8201 		if (status == GOT_STATUS_MODIFY) {
8202 			if (resp != 'y' && resp != 'n' && resp != 'q') {
8203 				printf("invalid response '%c'\n", resp);
8204 				resp = ' ';
8205 			}
8206 		} else if (resp != 'y' && resp != 'n') {
8207 				printf("invalid response '%c'\n", resp);
8208 				resp = ' ';
8209 		}
8210 	}
8211 
8212 	if (resp == 'y')
8213 		*choice = GOT_PATCH_CHOICE_YES;
8214 	else if (resp == 'n')
8215 		*choice = GOT_PATCH_CHOICE_NO;
8216 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
8217 		*choice = GOT_PATCH_CHOICE_QUIT;
8218 
8219 	return NULL;
8220 }
8221 
8222 static const struct got_error *
8223 cmd_revert(int argc, char *argv[])
8224 {
8225 	const struct got_error *error = NULL;
8226 	struct got_worktree *worktree = NULL;
8227 	struct got_repository *repo = NULL;
8228 	char *cwd = NULL, *path = NULL;
8229 	struct got_pathlist_head paths;
8230 	struct got_pathlist_entry *pe;
8231 	int ch, can_recurse = 0, pflag = 0;
8232 	FILE *patch_script_file = NULL;
8233 	const char *patch_script_path = NULL;
8234 	struct choose_patch_arg cpa;
8235 	int *pack_fds = NULL;
8236 
8237 	TAILQ_INIT(&paths);
8238 
8239 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
8240 		switch (ch) {
8241 		case 'F':
8242 			patch_script_path = optarg;
8243 			break;
8244 		case 'p':
8245 			pflag = 1;
8246 			break;
8247 		case 'R':
8248 			can_recurse = 1;
8249 			break;
8250 		default:
8251 			usage_revert();
8252 			/* NOTREACHED */
8253 		}
8254 	}
8255 
8256 	argc -= optind;
8257 	argv += optind;
8258 
8259 #ifndef PROFILE
8260 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8261 	    "unveil", NULL) == -1)
8262 		err(1, "pledge");
8263 #endif
8264 	if (argc < 1)
8265 		usage_revert();
8266 	if (patch_script_path && !pflag)
8267 		errx(1, "-F option can only be used together with -p option");
8268 
8269 	cwd = getcwd(NULL, 0);
8270 	if (cwd == NULL) {
8271 		error = got_error_from_errno("getcwd");
8272 		goto done;
8273 	}
8274 
8275 	error = got_repo_pack_fds_open(&pack_fds);
8276 	if (error != NULL)
8277 		goto done;
8278 
8279 	error = got_worktree_open(&worktree, cwd);
8280 	if (error) {
8281 		if (error->code == GOT_ERR_NOT_WORKTREE)
8282 			error = wrap_not_worktree_error(error, "revert", cwd);
8283 		goto done;
8284 	}
8285 
8286 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8287 	    NULL, pack_fds);
8288 	if (error != NULL)
8289 		goto done;
8290 
8291 	if (patch_script_path) {
8292 		patch_script_file = fopen(patch_script_path, "re");
8293 		if (patch_script_file == NULL) {
8294 			error = got_error_from_errno2("fopen",
8295 			    patch_script_path);
8296 			goto done;
8297 		}
8298 	}
8299 	error = apply_unveil(got_repo_get_path(repo), 1,
8300 	    got_worktree_get_root_path(worktree));
8301 	if (error)
8302 		goto done;
8303 
8304 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8305 	if (error)
8306 		goto done;
8307 
8308 	if (!can_recurse) {
8309 		char *ondisk_path;
8310 		struct stat sb;
8311 		TAILQ_FOREACH(pe, &paths, entry) {
8312 			if (asprintf(&ondisk_path, "%s/%s",
8313 			    got_worktree_get_root_path(worktree),
8314 			    pe->path) == -1) {
8315 				error = got_error_from_errno("asprintf");
8316 				goto done;
8317 			}
8318 			if (lstat(ondisk_path, &sb) == -1) {
8319 				if (errno == ENOENT) {
8320 					free(ondisk_path);
8321 					continue;
8322 				}
8323 				error = got_error_from_errno2("lstat",
8324 				    ondisk_path);
8325 				free(ondisk_path);
8326 				goto done;
8327 			}
8328 			free(ondisk_path);
8329 			if (S_ISDIR(sb.st_mode)) {
8330 				error = got_error_msg(GOT_ERR_BAD_PATH,
8331 				    "reverting directories requires -R option");
8332 				goto done;
8333 			}
8334 		}
8335 	}
8336 
8337 	cpa.patch_script_file = patch_script_file;
8338 	cpa.action = "revert";
8339 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
8340 	    pflag ? choose_patch : NULL, &cpa, repo);
8341 done:
8342 	if (patch_script_file && fclose(patch_script_file) == EOF &&
8343 	    error == NULL)
8344 		error = got_error_from_errno2("fclose", patch_script_path);
8345 	if (repo) {
8346 		const struct got_error *close_err = got_repo_close(repo);
8347 		if (error == NULL)
8348 			error = close_err;
8349 	}
8350 	if (worktree)
8351 		got_worktree_close(worktree);
8352 	if (pack_fds) {
8353 		const struct got_error *pack_err =
8354 		    got_repo_pack_fds_close(pack_fds);
8355 		if (error == NULL)
8356 			error = pack_err;
8357 	}
8358 	free(path);
8359 	free(cwd);
8360 	return error;
8361 }
8362 
8363 __dead static void
8364 usage_commit(void)
8365 {
8366 	fprintf(stderr, "usage: %s commit [-NS] [-A author] [-F path] "
8367 	    "[-m message] [path ...]\n", getprogname());
8368 	exit(1);
8369 }
8370 
8371 struct collect_commit_logmsg_arg {
8372 	const char *cmdline_log;
8373 	const char *prepared_log;
8374 	int non_interactive;
8375 	const char *editor;
8376 	const char *worktree_path;
8377 	const char *branch_name;
8378 	const char *repo_path;
8379 	char *logmsg_path;
8380 
8381 };
8382 
8383 static const struct got_error *
8384 read_prepared_logmsg(char **logmsg, const char *path)
8385 {
8386 	const struct got_error *err = NULL;
8387 	FILE *f = NULL;
8388 	struct stat sb;
8389 	size_t r;
8390 
8391 	*logmsg = NULL;
8392 	memset(&sb, 0, sizeof(sb));
8393 
8394 	f = fopen(path, "re");
8395 	if (f == NULL)
8396 		return got_error_from_errno2("fopen", path);
8397 
8398 	if (fstat(fileno(f), &sb) == -1) {
8399 		err = got_error_from_errno2("fstat", path);
8400 		goto done;
8401 	}
8402 	if (sb.st_size == 0) {
8403 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
8404 		goto done;
8405 	}
8406 
8407 	*logmsg = malloc(sb.st_size + 1);
8408 	if (*logmsg == NULL) {
8409 		err = got_error_from_errno("malloc");
8410 		goto done;
8411 	}
8412 
8413 	r = fread(*logmsg, 1, sb.st_size, f);
8414 	if (r != sb.st_size) {
8415 		if (ferror(f))
8416 			err = got_error_from_errno2("fread", path);
8417 		else
8418 			err = got_error(GOT_ERR_IO);
8419 		goto done;
8420 	}
8421 	(*logmsg)[sb.st_size] = '\0';
8422 done:
8423 	if (fclose(f) == EOF && err == NULL)
8424 		err = got_error_from_errno2("fclose", path);
8425 	if (err) {
8426 		free(*logmsg);
8427 		*logmsg = NULL;
8428 	}
8429 	return err;
8430 }
8431 
8432 static const struct got_error *
8433 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
8434     const char *diff_path, char **logmsg, void *arg)
8435 {
8436 	char *initial_content = NULL;
8437 	struct got_pathlist_entry *pe;
8438 	const struct got_error *err = NULL;
8439 	char *template = NULL;
8440 	struct collect_commit_logmsg_arg *a = arg;
8441 	int initial_content_len;
8442 	int fd = -1;
8443 	size_t len;
8444 
8445 	/* if a message was specified on the command line, just use it */
8446 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
8447 		len = strlen(a->cmdline_log) + 1;
8448 		*logmsg = malloc(len + 1);
8449 		if (*logmsg == NULL)
8450 			return got_error_from_errno("malloc");
8451 		strlcpy(*logmsg, a->cmdline_log, len);
8452 		return NULL;
8453 	} else if (a->prepared_log != NULL && a->non_interactive)
8454 		return read_prepared_logmsg(logmsg, a->prepared_log);
8455 
8456 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
8457 		return got_error_from_errno("asprintf");
8458 
8459 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
8460 	if (err)
8461 		goto done;
8462 
8463 	if (a->prepared_log) {
8464 		char *msg;
8465 		err = read_prepared_logmsg(&msg, a->prepared_log);
8466 		if (err)
8467 			goto done;
8468 		if (write(fd, msg, strlen(msg)) == -1) {
8469 			err = got_error_from_errno2("write", a->logmsg_path);
8470 			free(msg);
8471 			goto done;
8472 		}
8473 		free(msg);
8474 	}
8475 
8476 	initial_content_len = asprintf(&initial_content,
8477 	    "\n# changes to be committed on branch %s:\n",
8478 	    a->branch_name);
8479 	if (initial_content_len == -1) {
8480 		err = got_error_from_errno("asprintf");
8481 		goto done;
8482 	}
8483 
8484 	if (write(fd, initial_content, initial_content_len) == -1) {
8485 		err = got_error_from_errno2("write", a->logmsg_path);
8486 		goto done;
8487 	}
8488 
8489 	TAILQ_FOREACH(pe, commitable_paths, entry) {
8490 		struct got_commitable *ct = pe->data;
8491 		dprintf(fd, "#  %c  %s\n",
8492 		    got_commitable_get_status(ct),
8493 		    got_commitable_get_path(ct));
8494 	}
8495 
8496 	if (diff_path) {
8497 		dprintf(fd, "# detailed changes can be viewed in %s\n",
8498 		    diff_path);
8499 	}
8500 
8501 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
8502 	    initial_content_len, a->prepared_log ? 0 : 1);
8503 done:
8504 	free(initial_content);
8505 	free(template);
8506 
8507 	if (fd != -1 && close(fd) == -1 && err == NULL)
8508 		err = got_error_from_errno2("close", a->logmsg_path);
8509 
8510 	/* Editor is done; we can now apply unveil(2) */
8511 	if (err == NULL)
8512 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
8513 	if (err) {
8514 		free(*logmsg);
8515 		*logmsg = NULL;
8516 	}
8517 	return err;
8518 }
8519 
8520 static const struct got_error *
8521 cmd_commit(int argc, char *argv[])
8522 {
8523 	const struct got_error *error = NULL;
8524 	struct got_worktree *worktree = NULL;
8525 	struct got_repository *repo = NULL;
8526 	char *cwd = NULL, *id_str = NULL;
8527 	struct got_object_id *id = NULL;
8528 	const char *logmsg = NULL;
8529 	char *prepared_logmsg = NULL;
8530 	struct collect_commit_logmsg_arg cl_arg;
8531 	const char *author = NULL;
8532 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
8533 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
8534 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
8535 	int show_diff = 1;
8536 	struct got_pathlist_head paths;
8537 	int *pack_fds = NULL;
8538 
8539 	TAILQ_INIT(&paths);
8540 	cl_arg.logmsg_path = NULL;
8541 
8542 	while ((ch = getopt(argc, argv, "A:F:m:NnS")) != -1) {
8543 		switch (ch) {
8544 		case 'A':
8545 			author = optarg;
8546 			error = valid_author(author);
8547 			if (error)
8548 				return error;
8549 			break;
8550 		case 'F':
8551 			if (logmsg != NULL)
8552 				option_conflict('F', 'm');
8553 			prepared_logmsg = realpath(optarg, NULL);
8554 			if (prepared_logmsg == NULL)
8555 				return got_error_from_errno2("realpath",
8556 				    optarg);
8557 			break;
8558 		case 'm':
8559 			if (prepared_logmsg)
8560 				option_conflict('m', 'F');
8561 			logmsg = optarg;
8562 			break;
8563 		case 'N':
8564 			non_interactive = 1;
8565 			break;
8566 		case 'n':
8567 			show_diff = 0;
8568 			break;
8569 		case 'S':
8570 			allow_bad_symlinks = 1;
8571 			break;
8572 		default:
8573 			usage_commit();
8574 			/* NOTREACHED */
8575 		}
8576 	}
8577 
8578 	argc -= optind;
8579 	argv += optind;
8580 
8581 #ifndef PROFILE
8582 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8583 	    "unveil", NULL) == -1)
8584 		err(1, "pledge");
8585 #endif
8586 	cwd = getcwd(NULL, 0);
8587 	if (cwd == NULL) {
8588 		error = got_error_from_errno("getcwd");
8589 		goto done;
8590 	}
8591 
8592 	error = got_repo_pack_fds_open(&pack_fds);
8593 	if (error != NULL)
8594 		goto done;
8595 
8596 	error = got_worktree_open(&worktree, cwd);
8597 	if (error) {
8598 		if (error->code == GOT_ERR_NOT_WORKTREE)
8599 			error = wrap_not_worktree_error(error, "commit", cwd);
8600 		goto done;
8601 	}
8602 
8603 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
8604 	if (error)
8605 		goto done;
8606 	if (rebase_in_progress) {
8607 		error = got_error(GOT_ERR_REBASING);
8608 		goto done;
8609 	}
8610 
8611 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
8612 	    worktree);
8613 	if (error)
8614 		goto done;
8615 
8616 	error = get_gitconfig_path(&gitconfig_path);
8617 	if (error)
8618 		goto done;
8619 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8620 	    gitconfig_path, pack_fds);
8621 	if (error != NULL)
8622 		goto done;
8623 
8624 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
8625 	if (error)
8626 		goto done;
8627 	if (merge_in_progress) {
8628 		error = got_error(GOT_ERR_MERGE_BUSY);
8629 		goto done;
8630 	}
8631 
8632 	error = get_author(&committer, repo, worktree);
8633 	if (error)
8634 		goto done;
8635 
8636 	if (author != NULL && !strcmp(committer, author)) {
8637 		error = got_error(GOT_ERR_COMMIT_REDUNDANT_AUTHOR);
8638 		goto done;
8639 	}
8640 
8641 	if (author == NULL)
8642 		author = committer;
8643 
8644 	/*
8645 	 * unveil(2) traverses exec(2); if an editor is used we have
8646 	 * to apply unveil after the log message has been written.
8647 	 */
8648 	if (logmsg == NULL || strlen(logmsg) == 0)
8649 		error = get_editor(&editor);
8650 	else
8651 		error = apply_unveil(got_repo_get_path(repo), 0,
8652 		    got_worktree_get_root_path(worktree));
8653 	if (error)
8654 		goto done;
8655 
8656 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8657 	if (error)
8658 		goto done;
8659 
8660 	cl_arg.editor = editor;
8661 	cl_arg.cmdline_log = logmsg;
8662 	cl_arg.prepared_log = prepared_logmsg;
8663 	cl_arg.non_interactive = non_interactive;
8664 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
8665 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
8666 	if (!histedit_in_progress) {
8667 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
8668 			error = got_error(GOT_ERR_COMMIT_BRANCH);
8669 			goto done;
8670 		}
8671 		cl_arg.branch_name += 11;
8672 	}
8673 	cl_arg.repo_path = got_repo_get_path(repo);
8674 	error = got_worktree_commit(&id, worktree, &paths, author, committer,
8675 	    allow_bad_symlinks, show_diff, collect_commit_logmsg, &cl_arg,
8676 	    print_status, NULL, repo);
8677 	if (error) {
8678 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
8679 		    cl_arg.logmsg_path != NULL)
8680 			preserve_logmsg = 1;
8681 		goto done;
8682 	}
8683 
8684 	error = got_object_id_str(&id_str, id);
8685 	if (error)
8686 		goto done;
8687 	printf("Created commit %s\n", id_str);
8688 done:
8689 	if (preserve_logmsg) {
8690 		fprintf(stderr, "%s: log message preserved in %s\n",
8691 		    getprogname(), cl_arg.logmsg_path);
8692 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
8693 	    error == NULL)
8694 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
8695 	free(cl_arg.logmsg_path);
8696 	if (repo) {
8697 		const struct got_error *close_err = got_repo_close(repo);
8698 		if (error == NULL)
8699 			error = close_err;
8700 	}
8701 	if (worktree)
8702 		got_worktree_close(worktree);
8703 	if (pack_fds) {
8704 		const struct got_error *pack_err =
8705 		    got_repo_pack_fds_close(pack_fds);
8706 		if (error == NULL)
8707 			error = pack_err;
8708 	}
8709 	free(cwd);
8710 	free(id_str);
8711 	free(gitconfig_path);
8712 	free(editor);
8713 	free(committer);
8714 	free(prepared_logmsg);
8715 	return error;
8716 }
8717 
8718 __dead static void
8719 usage_send(void)
8720 {
8721 	fprintf(stderr, "usage: %s send [-afqTv] [-b branch] [-d branch] "
8722 	    "[-r repository-path] [-t tag] [remote-repository]\n",
8723 	    getprogname());
8724 	exit(1);
8725 }
8726 
8727 static void
8728 print_load_info(int print_colored, int print_found, int print_trees,
8729     int ncolored, int nfound, int ntrees)
8730 {
8731 	if (print_colored) {
8732 		printf("%d commit%s colored", ncolored,
8733 		    ncolored == 1 ? "" : "s");
8734 	}
8735 	if (print_found) {
8736 		printf("%s%d object%s found",
8737 		    ncolored > 0 ? "; " : "",
8738 		    nfound, nfound == 1 ? "" : "s");
8739 	}
8740 	if (print_trees) {
8741 		printf("; %d tree%s scanned", ntrees,
8742 		    ntrees == 1 ? "" : "s");
8743 	}
8744 }
8745 
8746 struct got_send_progress_arg {
8747 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
8748 	int verbosity;
8749 	int last_ncolored;
8750 	int last_nfound;
8751 	int last_ntrees;
8752 	int loading_done;
8753 	int last_ncommits;
8754 	int last_nobj_total;
8755 	int last_p_deltify;
8756 	int last_p_written;
8757 	int last_p_sent;
8758 	int printed_something;
8759 	int sent_something;
8760 	struct got_pathlist_head *delete_branches;
8761 };
8762 
8763 static const struct got_error *
8764 send_progress(void *arg, int ncolored, int nfound, int ntrees,
8765     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
8766     int nobj_written, off_t bytes_sent, const char *refname, int success)
8767 {
8768 	struct got_send_progress_arg *a = arg;
8769 	char scaled_packsize[FMT_SCALED_STRSIZE];
8770 	char scaled_sent[FMT_SCALED_STRSIZE];
8771 	int p_deltify = 0, p_written = 0, p_sent = 0;
8772 	int print_colored = 0, print_found = 0, print_trees = 0;
8773 	int print_searching = 0, print_total = 0;
8774 	int print_deltify = 0, print_written = 0, print_sent = 0;
8775 
8776 	if (a->verbosity < 0)
8777 		return NULL;
8778 
8779 	if (refname) {
8780 		const char *status = success ? "accepted" : "rejected";
8781 
8782 		if (success) {
8783 			struct got_pathlist_entry *pe;
8784 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
8785 				const char *branchname = pe->path;
8786 				if (got_path_cmp(branchname, refname,
8787 				    strlen(branchname), strlen(refname)) == 0) {
8788 					status = "deleted";
8789 					a->sent_something = 1;
8790 					break;
8791 				}
8792 			}
8793 		}
8794 
8795 		if (a->printed_something)
8796 			putchar('\n');
8797 		printf("Server has %s %s", status, refname);
8798 		a->printed_something = 1;
8799 		return NULL;
8800 	}
8801 
8802 	if (a->last_ncolored != ncolored) {
8803 		print_colored = 1;
8804 		a->last_ncolored = ncolored;
8805 	}
8806 
8807 	if (a->last_nfound != nfound) {
8808 		print_colored = 1;
8809 		print_found = 1;
8810 		a->last_nfound = nfound;
8811 	}
8812 
8813 	if (a->last_ntrees != ntrees) {
8814 		print_colored = 1;
8815 		print_found = 1;
8816 		print_trees = 1;
8817 		a->last_ntrees = ntrees;
8818 	}
8819 
8820 	if ((print_colored || print_found || print_trees) &&
8821 	    !a->loading_done) {
8822 		printf("\r");
8823 		print_load_info(print_colored, print_found, print_trees,
8824 		    ncolored, nfound, ntrees);
8825 		a->printed_something = 1;
8826 		fflush(stdout);
8827 		return NULL;
8828 	} else if (!a->loading_done) {
8829 		printf("\r");
8830 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
8831 		printf("\n");
8832 		a->loading_done = 1;
8833 	}
8834 
8835 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
8836 		return got_error_from_errno("fmt_scaled");
8837 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
8838 		return got_error_from_errno("fmt_scaled");
8839 
8840 	if (a->last_ncommits != ncommits) {
8841 		print_searching = 1;
8842 		a->last_ncommits = ncommits;
8843 	}
8844 
8845 	if (a->last_nobj_total != nobj_total) {
8846 		print_searching = 1;
8847 		print_total = 1;
8848 		a->last_nobj_total = nobj_total;
8849 	}
8850 
8851 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
8852 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
8853 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
8854 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
8855 			return got_error(GOT_ERR_NO_SPACE);
8856 	}
8857 
8858 	if (nobj_deltify > 0 || nobj_written > 0) {
8859 		if (nobj_deltify > 0) {
8860 			p_deltify = (nobj_deltify * 100) / nobj_total;
8861 			if (p_deltify != a->last_p_deltify) {
8862 				a->last_p_deltify = p_deltify;
8863 				print_searching = 1;
8864 				print_total = 1;
8865 				print_deltify = 1;
8866 			}
8867 		}
8868 		if (nobj_written > 0) {
8869 			p_written = (nobj_written * 100) / nobj_total;
8870 			if (p_written != a->last_p_written) {
8871 				a->last_p_written = p_written;
8872 				print_searching = 1;
8873 				print_total = 1;
8874 				print_deltify = 1;
8875 				print_written = 1;
8876 			}
8877 		}
8878 	}
8879 
8880 	if (bytes_sent > 0) {
8881 		p_sent = (bytes_sent * 100) / packfile_size;
8882 		if (p_sent != a->last_p_sent) {
8883 			a->last_p_sent = p_sent;
8884 			print_searching = 1;
8885 			print_total = 1;
8886 			print_deltify = 1;
8887 			print_written = 1;
8888 			print_sent = 1;
8889 		}
8890 		a->sent_something = 1;
8891 	}
8892 
8893 	if (print_searching || print_total || print_deltify || print_written ||
8894 	    print_sent)
8895 		printf("\r");
8896 	if (print_searching)
8897 		printf("packing %d reference%s", ncommits,
8898 		    ncommits == 1 ? "" : "s");
8899 	if (print_total)
8900 		printf("; %d object%s", nobj_total,
8901 		    nobj_total == 1 ? "" : "s");
8902 	if (print_deltify)
8903 		printf("; deltify: %d%%", p_deltify);
8904 	if (print_sent)
8905 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
8906 		    scaled_packsize, p_sent);
8907 	else if (print_written)
8908 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
8909 		    scaled_packsize, p_written);
8910 	if (print_searching || print_total || print_deltify ||
8911 	    print_written || print_sent) {
8912 		a->printed_something = 1;
8913 		fflush(stdout);
8914 	}
8915 	return NULL;
8916 }
8917 
8918 static const struct got_error *
8919 cmd_send(int argc, char *argv[])
8920 {
8921 	const struct got_error *error = NULL;
8922 	char *cwd = NULL, *repo_path = NULL;
8923 	const char *remote_name;
8924 	char *proto = NULL, *host = NULL, *port = NULL;
8925 	char *repo_name = NULL, *server_path = NULL;
8926 	const struct got_remote_repo *remotes, *remote = NULL;
8927 	int nremotes, nbranches = 0, ndelete_branches = 0;
8928 	struct got_repository *repo = NULL;
8929 	struct got_worktree *worktree = NULL;
8930 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
8931 	struct got_pathlist_head branches;
8932 	struct got_pathlist_head tags;
8933 	struct got_reflist_head all_branches;
8934 	struct got_reflist_head all_tags;
8935 	struct got_pathlist_head delete_args;
8936 	struct got_pathlist_head delete_branches;
8937 	struct got_reflist_entry *re;
8938 	struct got_pathlist_entry *pe;
8939 	int i, ch, sendfd = -1, sendstatus;
8940 	pid_t sendpid = -1;
8941 	struct got_send_progress_arg spa;
8942 	int verbosity = 0, overwrite_refs = 0;
8943 	int send_all_branches = 0, send_all_tags = 0;
8944 	struct got_reference *ref = NULL;
8945 	int *pack_fds = NULL;
8946 
8947 	TAILQ_INIT(&branches);
8948 	TAILQ_INIT(&tags);
8949 	TAILQ_INIT(&all_branches);
8950 	TAILQ_INIT(&all_tags);
8951 	TAILQ_INIT(&delete_args);
8952 	TAILQ_INIT(&delete_branches);
8953 
8954 	while ((ch = getopt(argc, argv, "ab:d:fqr:Tt:v")) != -1) {
8955 		switch (ch) {
8956 		case 'a':
8957 			send_all_branches = 1;
8958 			break;
8959 		case 'b':
8960 			error = got_pathlist_append(&branches, optarg, NULL);
8961 			if (error)
8962 				return error;
8963 			nbranches++;
8964 			break;
8965 		case 'd':
8966 			error = got_pathlist_append(&delete_args, optarg, NULL);
8967 			if (error)
8968 				return error;
8969 			break;
8970 		case 'f':
8971 			overwrite_refs = 1;
8972 			break;
8973 		case 'q':
8974 			verbosity = -1;
8975 			break;
8976 		case 'r':
8977 			repo_path = realpath(optarg, NULL);
8978 			if (repo_path == NULL)
8979 				return got_error_from_errno2("realpath",
8980 				    optarg);
8981 			got_path_strip_trailing_slashes(repo_path);
8982 			break;
8983 		case 'T':
8984 			send_all_tags = 1;
8985 			break;
8986 		case 't':
8987 			error = got_pathlist_append(&tags, optarg, NULL);
8988 			if (error)
8989 				return error;
8990 			break;
8991 		case 'v':
8992 			if (verbosity < 0)
8993 				verbosity = 0;
8994 			else if (verbosity < 3)
8995 				verbosity++;
8996 			break;
8997 		default:
8998 			usage_send();
8999 			/* NOTREACHED */
9000 		}
9001 	}
9002 	argc -= optind;
9003 	argv += optind;
9004 
9005 	if (send_all_branches && !TAILQ_EMPTY(&branches))
9006 		option_conflict('a', 'b');
9007 	if (send_all_tags && !TAILQ_EMPTY(&tags))
9008 		option_conflict('T', 't');
9009 
9010 
9011 	if (argc == 0)
9012 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
9013 	else if (argc == 1)
9014 		remote_name = argv[0];
9015 	else
9016 		usage_send();
9017 
9018 	cwd = getcwd(NULL, 0);
9019 	if (cwd == NULL) {
9020 		error = got_error_from_errno("getcwd");
9021 		goto done;
9022 	}
9023 
9024 	error = got_repo_pack_fds_open(&pack_fds);
9025 	if (error != NULL)
9026 		goto done;
9027 
9028 	if (repo_path == NULL) {
9029 		error = got_worktree_open(&worktree, cwd);
9030 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
9031 			goto done;
9032 		else
9033 			error = NULL;
9034 		if (worktree) {
9035 			repo_path =
9036 			    strdup(got_worktree_get_repo_path(worktree));
9037 			if (repo_path == NULL)
9038 				error = got_error_from_errno("strdup");
9039 			if (error)
9040 				goto done;
9041 		} else {
9042 			repo_path = strdup(cwd);
9043 			if (repo_path == NULL) {
9044 				error = got_error_from_errno("strdup");
9045 				goto done;
9046 			}
9047 		}
9048 	}
9049 
9050 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
9051 	if (error)
9052 		goto done;
9053 
9054 	if (worktree) {
9055 		worktree_conf = got_worktree_get_gotconfig(worktree);
9056 		if (worktree_conf) {
9057 			got_gotconfig_get_remotes(&nremotes, &remotes,
9058 			    worktree_conf);
9059 			for (i = 0; i < nremotes; i++) {
9060 				if (strcmp(remotes[i].name, remote_name) == 0) {
9061 					remote = &remotes[i];
9062 					break;
9063 				}
9064 			}
9065 		}
9066 	}
9067 	if (remote == NULL) {
9068 		repo_conf = got_repo_get_gotconfig(repo);
9069 		if (repo_conf) {
9070 			got_gotconfig_get_remotes(&nremotes, &remotes,
9071 			    repo_conf);
9072 			for (i = 0; i < nremotes; i++) {
9073 				if (strcmp(remotes[i].name, remote_name) == 0) {
9074 					remote = &remotes[i];
9075 					break;
9076 				}
9077 			}
9078 		}
9079 	}
9080 	if (remote == NULL) {
9081 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
9082 		for (i = 0; i < nremotes; i++) {
9083 			if (strcmp(remotes[i].name, remote_name) == 0) {
9084 				remote = &remotes[i];
9085 				break;
9086 			}
9087 		}
9088 	}
9089 	if (remote == NULL) {
9090 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
9091 		goto done;
9092 	}
9093 
9094 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
9095 	    &repo_name, remote->send_url);
9096 	if (error)
9097 		goto done;
9098 
9099 	if (strcmp(proto, "git") == 0) {
9100 #ifndef PROFILE
9101 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9102 		    "sendfd dns inet unveil", NULL) == -1)
9103 			err(1, "pledge");
9104 #endif
9105 	} else if (strcmp(proto, "git+ssh") == 0 ||
9106 	    strcmp(proto, "ssh") == 0) {
9107 #ifndef PROFILE
9108 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9109 		    "sendfd unveil", NULL) == -1)
9110 			err(1, "pledge");
9111 #endif
9112 	} else if (strcmp(proto, "http") == 0 ||
9113 	    strcmp(proto, "git+http") == 0) {
9114 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
9115 		goto done;
9116 	} else {
9117 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
9118 		goto done;
9119 	}
9120 
9121 	error = got_dial_apply_unveil(proto);
9122 	if (error)
9123 		goto done;
9124 
9125 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
9126 	if (error)
9127 		goto done;
9128 
9129 	if (send_all_branches) {
9130 		error = got_ref_list(&all_branches, repo, "refs/heads",
9131 		    got_ref_cmp_by_name, NULL);
9132 		if (error)
9133 			goto done;
9134 		TAILQ_FOREACH(re, &all_branches, entry) {
9135 			const char *branchname = got_ref_get_name(re->ref);
9136 			error = got_pathlist_append(&branches,
9137 			    branchname, NULL);
9138 			if (error)
9139 				goto done;
9140 			nbranches++;
9141 		}
9142 	} else if (nbranches == 0) {
9143 		for (i = 0; i < remote->nsend_branches; i++) {
9144 			got_pathlist_append(&branches,
9145 			    remote->send_branches[i], NULL);
9146 		}
9147 	}
9148 
9149 	if (send_all_tags) {
9150 		error = got_ref_list(&all_tags, repo, "refs/tags",
9151 		    got_ref_cmp_by_name, NULL);
9152 		if (error)
9153 			goto done;
9154 		TAILQ_FOREACH(re, &all_tags, entry) {
9155 			const char *tagname = got_ref_get_name(re->ref);
9156 			error = got_pathlist_append(&tags,
9157 			    tagname, NULL);
9158 			if (error)
9159 				goto done;
9160 		}
9161 	}
9162 
9163 	/*
9164 	 * To prevent accidents only branches in refs/heads/ can be deleted
9165 	 * with 'got send -d'.
9166 	 * Deleting anything else requires local repository access or Git.
9167 	 */
9168 	TAILQ_FOREACH(pe, &delete_args, entry) {
9169 		const char *branchname = pe->path;
9170 		char *s;
9171 		struct got_pathlist_entry *new;
9172 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
9173 			s = strdup(branchname);
9174 			if (s == NULL) {
9175 				error = got_error_from_errno("strdup");
9176 				goto done;
9177 			}
9178 		} else {
9179 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
9180 				error = got_error_from_errno("asprintf");
9181 				goto done;
9182 			}
9183 		}
9184 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
9185 		if (error || new == NULL /* duplicate */)
9186 			free(s);
9187 		if (error)
9188 			goto done;
9189 		ndelete_branches++;
9190 	}
9191 
9192 	if (nbranches == 0 && ndelete_branches == 0) {
9193 		struct got_reference *head_ref;
9194 		if (worktree)
9195 			error = got_ref_open(&head_ref, repo,
9196 			    got_worktree_get_head_ref_name(worktree), 0);
9197 		else
9198 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
9199 		if (error)
9200 			goto done;
9201 		if (got_ref_is_symbolic(head_ref)) {
9202 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
9203 			got_ref_close(head_ref);
9204 			if (error)
9205 				goto done;
9206 		} else
9207 			ref = head_ref;
9208 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
9209 		    NULL);
9210 		if (error)
9211 			goto done;
9212 		nbranches++;
9213 	}
9214 
9215 	if (verbosity >= 0)
9216 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
9217 		    port ? ":" : "", port ? port : "");
9218 
9219 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
9220 	    server_path, verbosity);
9221 	if (error)
9222 		goto done;
9223 
9224 	memset(&spa, 0, sizeof(spa));
9225 	spa.last_scaled_packsize[0] = '\0';
9226 	spa.last_p_deltify = -1;
9227 	spa.last_p_written = -1;
9228 	spa.verbosity = verbosity;
9229 	spa.delete_branches = &delete_branches;
9230 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
9231 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
9232 	    check_cancelled, NULL);
9233 	if (spa.printed_something)
9234 		putchar('\n');
9235 	if (error)
9236 		goto done;
9237 	if (!spa.sent_something && verbosity >= 0)
9238 		printf("Already up-to-date\n");
9239 done:
9240 	if (sendpid > 0) {
9241 		if (kill(sendpid, SIGTERM) == -1)
9242 			error = got_error_from_errno("kill");
9243 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
9244 			error = got_error_from_errno("waitpid");
9245 	}
9246 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
9247 		error = got_error_from_errno("close");
9248 	if (repo) {
9249 		const struct got_error *close_err = got_repo_close(repo);
9250 		if (error == NULL)
9251 			error = close_err;
9252 	}
9253 	if (worktree)
9254 		got_worktree_close(worktree);
9255 	if (pack_fds) {
9256 		const struct got_error *pack_err =
9257 		    got_repo_pack_fds_close(pack_fds);
9258 		if (error == NULL)
9259 			error = pack_err;
9260 	}
9261 	if (ref)
9262 		got_ref_close(ref);
9263 	got_pathlist_free(&branches);
9264 	got_pathlist_free(&tags);
9265 	got_ref_list_free(&all_branches);
9266 	got_ref_list_free(&all_tags);
9267 	got_pathlist_free(&delete_args);
9268 	TAILQ_FOREACH(pe, &delete_branches, entry)
9269 		free((char *)pe->path);
9270 	got_pathlist_free(&delete_branches);
9271 	free(cwd);
9272 	free(repo_path);
9273 	free(proto);
9274 	free(host);
9275 	free(port);
9276 	free(server_path);
9277 	free(repo_name);
9278 	return error;
9279 }
9280 
9281 __dead static void
9282 usage_cherrypick(void)
9283 {
9284 	fprintf(stderr, "usage: %s cherrypick commit-id\n", getprogname());
9285 	exit(1);
9286 }
9287 
9288 static const struct got_error *
9289 cmd_cherrypick(int argc, char *argv[])
9290 {
9291 	const struct got_error *error = NULL;
9292 	struct got_worktree *worktree = NULL;
9293 	struct got_repository *repo = NULL;
9294 	char *cwd = NULL, *commit_id_str = NULL;
9295 	struct got_object_id *commit_id = NULL;
9296 	struct got_commit_object *commit = NULL;
9297 	struct got_object_qid *pid;
9298 	int ch;
9299 	struct got_update_progress_arg upa;
9300 	int *pack_fds = NULL;
9301 
9302 	while ((ch = getopt(argc, argv, "")) != -1) {
9303 		switch (ch) {
9304 		default:
9305 			usage_cherrypick();
9306 			/* NOTREACHED */
9307 		}
9308 	}
9309 
9310 	argc -= optind;
9311 	argv += optind;
9312 
9313 #ifndef PROFILE
9314 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9315 	    "unveil", NULL) == -1)
9316 		err(1, "pledge");
9317 #endif
9318 	if (argc != 1)
9319 		usage_cherrypick();
9320 
9321 	cwd = getcwd(NULL, 0);
9322 	if (cwd == NULL) {
9323 		error = got_error_from_errno("getcwd");
9324 		goto done;
9325 	}
9326 
9327 	error = got_repo_pack_fds_open(&pack_fds);
9328 	if (error != NULL)
9329 		goto done;
9330 
9331 	error = got_worktree_open(&worktree, cwd);
9332 	if (error) {
9333 		if (error->code == GOT_ERR_NOT_WORKTREE)
9334 			error = wrap_not_worktree_error(error, "cherrypick",
9335 			    cwd);
9336 		goto done;
9337 	}
9338 
9339 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9340 	    NULL, pack_fds);
9341 	if (error != NULL)
9342 		goto done;
9343 
9344 	error = apply_unveil(got_repo_get_path(repo), 0,
9345 	    got_worktree_get_root_path(worktree));
9346 	if (error)
9347 		goto done;
9348 
9349 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
9350 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9351 	if (error)
9352 		goto done;
9353 	error = got_object_id_str(&commit_id_str, commit_id);
9354 	if (error)
9355 		goto done;
9356 
9357 	error = got_object_open_as_commit(&commit, repo, commit_id);
9358 	if (error)
9359 		goto done;
9360 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
9361 	memset(&upa, 0, sizeof(upa));
9362 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
9363 	    commit_id, repo, update_progress, &upa, check_cancelled,
9364 	    NULL);
9365 	if (error != NULL)
9366 		goto done;
9367 
9368 	if (upa.did_something)
9369 		printf("Merged commit %s\n", commit_id_str);
9370 	print_merge_progress_stats(&upa);
9371 done:
9372 	if (commit)
9373 		got_object_commit_close(commit);
9374 	free(commit_id_str);
9375 	if (worktree)
9376 		got_worktree_close(worktree);
9377 	if (repo) {
9378 		const struct got_error *close_err = got_repo_close(repo);
9379 		if (error == NULL)
9380 			error = close_err;
9381 	}
9382 	if (pack_fds) {
9383 		const struct got_error *pack_err =
9384 		    got_repo_pack_fds_close(pack_fds);
9385 		if (error == NULL)
9386 			error = pack_err;
9387 	}
9388 
9389 	return error;
9390 }
9391 
9392 __dead static void
9393 usage_backout(void)
9394 {
9395 	fprintf(stderr, "usage: %s backout commit-id\n", getprogname());
9396 	exit(1);
9397 }
9398 
9399 static const struct got_error *
9400 cmd_backout(int argc, char *argv[])
9401 {
9402 	const struct got_error *error = NULL;
9403 	struct got_worktree *worktree = NULL;
9404 	struct got_repository *repo = NULL;
9405 	char *cwd = NULL, *commit_id_str = NULL;
9406 	struct got_object_id *commit_id = NULL;
9407 	struct got_commit_object *commit = NULL;
9408 	struct got_object_qid *pid;
9409 	int ch;
9410 	struct got_update_progress_arg upa;
9411 	int *pack_fds = NULL;
9412 
9413 	while ((ch = getopt(argc, argv, "")) != -1) {
9414 		switch (ch) {
9415 		default:
9416 			usage_backout();
9417 			/* NOTREACHED */
9418 		}
9419 	}
9420 
9421 	argc -= optind;
9422 	argv += optind;
9423 
9424 #ifndef PROFILE
9425 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9426 	    "unveil", NULL) == -1)
9427 		err(1, "pledge");
9428 #endif
9429 	if (argc != 1)
9430 		usage_backout();
9431 
9432 	cwd = getcwd(NULL, 0);
9433 	if (cwd == NULL) {
9434 		error = got_error_from_errno("getcwd");
9435 		goto done;
9436 	}
9437 
9438 	error = got_repo_pack_fds_open(&pack_fds);
9439 	if (error != NULL)
9440 		goto done;
9441 
9442 	error = got_worktree_open(&worktree, cwd);
9443 	if (error) {
9444 		if (error->code == GOT_ERR_NOT_WORKTREE)
9445 			error = wrap_not_worktree_error(error, "backout", cwd);
9446 		goto done;
9447 	}
9448 
9449 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9450 	    NULL, pack_fds);
9451 	if (error != NULL)
9452 		goto done;
9453 
9454 	error = apply_unveil(got_repo_get_path(repo), 0,
9455 	    got_worktree_get_root_path(worktree));
9456 	if (error)
9457 		goto done;
9458 
9459 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
9460 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9461 	if (error)
9462 		goto done;
9463 	error = got_object_id_str(&commit_id_str, commit_id);
9464 	if (error)
9465 		goto done;
9466 
9467 	error = got_object_open_as_commit(&commit, repo, commit_id);
9468 	if (error)
9469 		goto done;
9470 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
9471 	if (pid == NULL) {
9472 		error = got_error(GOT_ERR_ROOT_COMMIT);
9473 		goto done;
9474 	}
9475 
9476 	memset(&upa, 0, sizeof(upa));
9477 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
9478 	    repo, update_progress, &upa, check_cancelled, NULL);
9479 	if (error != NULL)
9480 		goto done;
9481 
9482 	if (upa.did_something)
9483 		printf("Backed out commit %s\n", commit_id_str);
9484 	print_merge_progress_stats(&upa);
9485 done:
9486 	if (commit)
9487 		got_object_commit_close(commit);
9488 	free(commit_id_str);
9489 	if (worktree)
9490 		got_worktree_close(worktree);
9491 	if (repo) {
9492 		const struct got_error *close_err = got_repo_close(repo);
9493 		if (error == NULL)
9494 			error = close_err;
9495 	}
9496 	if (pack_fds) {
9497 		const struct got_error *pack_err =
9498 		    got_repo_pack_fds_close(pack_fds);
9499 		if (error == NULL)
9500 			error = pack_err;
9501 	}
9502 	return error;
9503 }
9504 
9505 __dead static void
9506 usage_rebase(void)
9507 {
9508 	fprintf(stderr, "usage: %s rebase [-aclX] [branch]\n", getprogname());
9509 	exit(1);
9510 }
9511 
9512 static void
9513 trim_logmsg(char *logmsg, int limit)
9514 {
9515 	char *nl;
9516 	size_t len;
9517 
9518 	len = strlen(logmsg);
9519 	if (len > limit)
9520 		len = limit;
9521 	logmsg[len] = '\0';
9522 	nl = strchr(logmsg, '\n');
9523 	if (nl)
9524 		*nl = '\0';
9525 }
9526 
9527 static const struct got_error *
9528 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
9529 {
9530 	const struct got_error *err;
9531 	char *logmsg0 = NULL;
9532 	const char *s;
9533 
9534 	err = got_object_commit_get_logmsg(&logmsg0, commit);
9535 	if (err)
9536 		return err;
9537 
9538 	s = logmsg0;
9539 	while (isspace((unsigned char)s[0]))
9540 		s++;
9541 
9542 	*logmsg = strdup(s);
9543 	if (*logmsg == NULL) {
9544 		err = got_error_from_errno("strdup");
9545 		goto done;
9546 	}
9547 
9548 	trim_logmsg(*logmsg, limit);
9549 done:
9550 	free(logmsg0);
9551 	return err;
9552 }
9553 
9554 static const struct got_error *
9555 show_rebase_merge_conflict(struct got_object_id *id,
9556     struct got_repository *repo)
9557 {
9558 	const struct got_error *err;
9559 	struct got_commit_object *commit = NULL;
9560 	char *id_str = NULL, *logmsg = NULL;
9561 
9562 	err = got_object_open_as_commit(&commit, repo, id);
9563 	if (err)
9564 		return err;
9565 
9566 	err = got_object_id_str(&id_str, id);
9567 	if (err)
9568 		goto done;
9569 
9570 	id_str[12] = '\0';
9571 
9572 	err = get_short_logmsg(&logmsg, 42, commit);
9573 	if (err)
9574 		goto done;
9575 
9576 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
9577 done:
9578 	free(id_str);
9579 	got_object_commit_close(commit);
9580 	free(logmsg);
9581 	return err;
9582 }
9583 
9584 static const struct got_error *
9585 show_rebase_progress(struct got_commit_object *commit,
9586     struct got_object_id *old_id, struct got_object_id *new_id)
9587 {
9588 	const struct got_error *err;
9589 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
9590 
9591 	err = got_object_id_str(&old_id_str, old_id);
9592 	if (err)
9593 		goto done;
9594 
9595 	if (new_id) {
9596 		err = got_object_id_str(&new_id_str, new_id);
9597 		if (err)
9598 			goto done;
9599 	}
9600 
9601 	old_id_str[12] = '\0';
9602 	if (new_id_str)
9603 		new_id_str[12] = '\0';
9604 
9605 	err = get_short_logmsg(&logmsg, 42, commit);
9606 	if (err)
9607 		goto done;
9608 
9609 	printf("%s -> %s: %s\n", old_id_str,
9610 	    new_id_str ? new_id_str : "no-op change", logmsg);
9611 done:
9612 	free(old_id_str);
9613 	free(new_id_str);
9614 	free(logmsg);
9615 	return err;
9616 }
9617 
9618 static const struct got_error *
9619 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
9620     struct got_reference *branch, struct got_reference *new_base_branch,
9621     struct got_reference *tmp_branch, struct got_repository *repo,
9622     int create_backup)
9623 {
9624 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
9625 	return got_worktree_rebase_complete(worktree, fileindex,
9626 	    new_base_branch, tmp_branch, branch, repo, create_backup);
9627 }
9628 
9629 static const struct got_error *
9630 rebase_commit(struct got_pathlist_head *merged_paths,
9631     struct got_worktree *worktree, struct got_fileindex *fileindex,
9632     struct got_reference *tmp_branch, const char *committer,
9633     struct got_object_id *commit_id, struct got_repository *repo)
9634 {
9635 	const struct got_error *error;
9636 	struct got_commit_object *commit;
9637 	struct got_object_id *new_commit_id;
9638 
9639 	error = got_object_open_as_commit(&commit, repo, commit_id);
9640 	if (error)
9641 		return error;
9642 
9643 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
9644 	    worktree, fileindex, tmp_branch, committer, commit, commit_id,
9645 	    repo);
9646 	if (error) {
9647 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
9648 			goto done;
9649 		error = show_rebase_progress(commit, commit_id, NULL);
9650 	} else {
9651 		error = show_rebase_progress(commit, commit_id, new_commit_id);
9652 		free(new_commit_id);
9653 	}
9654 done:
9655 	got_object_commit_close(commit);
9656 	return error;
9657 }
9658 
9659 struct check_path_prefix_arg {
9660 	const char *path_prefix;
9661 	size_t len;
9662 	int errcode;
9663 };
9664 
9665 static const struct got_error *
9666 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
9667     struct got_blob_object *blob2, FILE *f1, FILE *f2,
9668     struct got_object_id *id1, struct got_object_id *id2,
9669     const char *path1, const char *path2,
9670     mode_t mode1, mode_t mode2, struct got_repository *repo)
9671 {
9672 	struct check_path_prefix_arg *a = arg;
9673 
9674 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
9675 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
9676 		return got_error(a->errcode);
9677 
9678 	return NULL;
9679 }
9680 
9681 static const struct got_error *
9682 check_path_prefix(struct got_object_id *parent_id,
9683     struct got_object_id *commit_id, const char *path_prefix,
9684     int errcode, struct got_repository *repo)
9685 {
9686 	const struct got_error *err;
9687 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
9688 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
9689 	struct check_path_prefix_arg cpp_arg;
9690 
9691 	if (got_path_is_root_dir(path_prefix))
9692 		return NULL;
9693 
9694 	err = got_object_open_as_commit(&commit, repo, commit_id);
9695 	if (err)
9696 		goto done;
9697 
9698 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
9699 	if (err)
9700 		goto done;
9701 
9702 	err = got_object_open_as_tree(&tree1, repo,
9703 	    got_object_commit_get_tree_id(parent_commit));
9704 	if (err)
9705 		goto done;
9706 
9707 	err = got_object_open_as_tree(&tree2, repo,
9708 	    got_object_commit_get_tree_id(commit));
9709 	if (err)
9710 		goto done;
9711 
9712 	cpp_arg.path_prefix = path_prefix;
9713 	while (cpp_arg.path_prefix[0] == '/')
9714 		cpp_arg.path_prefix++;
9715 	cpp_arg.len = strlen(cpp_arg.path_prefix);
9716 	cpp_arg.errcode = errcode;
9717 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
9718 	    check_path_prefix_in_diff, &cpp_arg, 0);
9719 done:
9720 	if (tree1)
9721 		got_object_tree_close(tree1);
9722 	if (tree2)
9723 		got_object_tree_close(tree2);
9724 	if (commit)
9725 		got_object_commit_close(commit);
9726 	if (parent_commit)
9727 		got_object_commit_close(parent_commit);
9728 	return err;
9729 }
9730 
9731 static const struct got_error *
9732 collect_commits(struct got_object_id_queue *commits,
9733     struct got_object_id *initial_commit_id,
9734     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
9735     const char *path_prefix, int path_prefix_errcode,
9736     struct got_repository *repo)
9737 {
9738 	const struct got_error *err = NULL;
9739 	struct got_commit_graph *graph = NULL;
9740 	struct got_object_id parent_id, commit_id;
9741 	struct got_object_qid *qid;
9742 
9743 	err = got_commit_graph_open(&graph, "/", 1);
9744 	if (err)
9745 		return err;
9746 
9747 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
9748 	    check_cancelled, NULL);
9749 	if (err)
9750 		goto done;
9751 
9752 	memcpy(&commit_id, initial_commit_id, sizeof(commit_id));
9753 	while (got_object_id_cmp(&commit_id, iter_stop_id) != 0) {
9754 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
9755 		    check_cancelled, NULL);
9756 		if (err) {
9757 			if (err->code == GOT_ERR_ITER_COMPLETED) {
9758 				err = got_error_msg(GOT_ERR_ANCESTRY,
9759 				    "ran out of commits to rebase before "
9760 				    "youngest common ancestor commit has "
9761 				    "been reached?!?");
9762 			}
9763 			goto done;
9764 		} else {
9765 			err = check_path_prefix(&parent_id, &commit_id,
9766 			    path_prefix, path_prefix_errcode, repo);
9767 			if (err)
9768 				goto done;
9769 
9770 			err = got_object_qid_alloc(&qid, &commit_id);
9771 			if (err)
9772 				goto done;
9773 			STAILQ_INSERT_HEAD(commits, qid, entry);
9774 
9775 			memcpy(&commit_id, &parent_id, sizeof(commit_id));
9776 		}
9777 	}
9778 done:
9779 	got_commit_graph_close(graph);
9780 	return err;
9781 }
9782 
9783 static const struct got_error *
9784 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
9785 {
9786 	const struct got_error *err = NULL;
9787 	time_t committer_time;
9788 	struct tm tm;
9789 	char datebuf[11]; /* YYYY-MM-DD + NUL */
9790 	char *author0 = NULL, *author, *smallerthan;
9791 	char *logmsg0 = NULL, *logmsg, *newline;
9792 
9793 	committer_time = got_object_commit_get_committer_time(commit);
9794 	if (gmtime_r(&committer_time, &tm) == NULL)
9795 		return got_error_from_errno("gmtime_r");
9796 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
9797 		return got_error(GOT_ERR_NO_SPACE);
9798 
9799 	author0 = strdup(got_object_commit_get_author(commit));
9800 	if (author0 == NULL)
9801 		return got_error_from_errno("strdup");
9802 	author = author0;
9803 	smallerthan = strchr(author, '<');
9804 	if (smallerthan && smallerthan[1] != '\0')
9805 		author = smallerthan + 1;
9806 	author[strcspn(author, "@>")] = '\0';
9807 
9808 	err = got_object_commit_get_logmsg(&logmsg0, commit);
9809 	if (err)
9810 		goto done;
9811 	logmsg = logmsg0;
9812 	while (*logmsg == '\n')
9813 		logmsg++;
9814 	newline = strchr(logmsg, '\n');
9815 	if (newline)
9816 		*newline = '\0';
9817 
9818 	if (asprintf(brief_str, "%s %s  %s",
9819 	    datebuf, author, logmsg) == -1)
9820 		err = got_error_from_errno("asprintf");
9821 done:
9822 	free(author0);
9823 	free(logmsg0);
9824 	return err;
9825 }
9826 
9827 static const struct got_error *
9828 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
9829     struct got_repository *repo)
9830 {
9831 	const struct got_error *err;
9832 	char *id_str;
9833 
9834 	err = got_object_id_str(&id_str, id);
9835 	if (err)
9836 		return err;
9837 
9838 	err = got_ref_delete(ref, repo);
9839 	if (err)
9840 		goto done;
9841 
9842 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
9843 done:
9844 	free(id_str);
9845 	return err;
9846 }
9847 
9848 static const struct got_error *
9849 print_backup_ref(const char *branch_name, const char *new_id_str,
9850     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
9851     struct got_reflist_object_id_map *refs_idmap,
9852     struct got_repository *repo)
9853 {
9854 	const struct got_error *err = NULL;
9855 	struct got_reflist_head *refs;
9856 	char *refs_str = NULL;
9857 	struct got_object_id *new_commit_id = NULL;
9858 	struct got_commit_object *new_commit = NULL;
9859 	char *new_commit_brief_str = NULL;
9860 	struct got_object_id *yca_id = NULL;
9861 	struct got_commit_object *yca_commit = NULL;
9862 	char *yca_id_str = NULL, *yca_brief_str = NULL;
9863 	char *custom_refs_str;
9864 
9865 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
9866 		return got_error_from_errno("asprintf");
9867 
9868 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL,
9869 	    0, 0, refs_idmap, custom_refs_str);
9870 	if (err)
9871 		goto done;
9872 
9873 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
9874 	if (err)
9875 		goto done;
9876 
9877 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
9878 	if (refs) {
9879 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
9880 		if (err)
9881 			goto done;
9882 	}
9883 
9884 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
9885 	if (err)
9886 		goto done;
9887 
9888 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
9889 	if (err)
9890 		goto done;
9891 
9892 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
9893 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
9894 	if (err)
9895 		goto done;
9896 
9897 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
9898 	    refs_str ? " (" : "", refs_str ? refs_str : "",
9899 	    refs_str ? ")" : "", new_commit_brief_str);
9900 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
9901 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
9902 		free(refs_str);
9903 		refs_str = NULL;
9904 
9905 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
9906 		if (err)
9907 			goto done;
9908 
9909 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
9910 		if (err)
9911 			goto done;
9912 
9913 		err = got_object_id_str(&yca_id_str, yca_id);
9914 		if (err)
9915 			goto done;
9916 
9917 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
9918 		if (refs) {
9919 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
9920 			if (err)
9921 				goto done;
9922 		}
9923 		printf("history forked at %s%s%s%s\n %s\n",
9924 		    yca_id_str,
9925 		    refs_str ? " (" : "", refs_str ? refs_str : "",
9926 		    refs_str ? ")" : "", yca_brief_str);
9927 	}
9928 done:
9929 	free(custom_refs_str);
9930 	free(new_commit_id);
9931 	free(refs_str);
9932 	free(yca_id);
9933 	free(yca_id_str);
9934 	free(yca_brief_str);
9935 	if (new_commit)
9936 		got_object_commit_close(new_commit);
9937 	if (yca_commit)
9938 		got_object_commit_close(yca_commit);
9939 
9940 	return NULL;
9941 }
9942 
9943 static const struct got_error *
9944 process_backup_refs(const char *backup_ref_prefix,
9945     const char *wanted_branch_name,
9946     int delete, struct got_repository *repo)
9947 {
9948 	const struct got_error *err;
9949 	struct got_reflist_head refs, backup_refs;
9950 	struct got_reflist_entry *re;
9951 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
9952 	struct got_object_id *old_commit_id = NULL;
9953 	char *branch_name = NULL;
9954 	struct got_commit_object *old_commit = NULL;
9955 	struct got_reflist_object_id_map *refs_idmap = NULL;
9956 	int wanted_branch_found = 0;
9957 
9958 	TAILQ_INIT(&refs);
9959 	TAILQ_INIT(&backup_refs);
9960 
9961 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
9962 	if (err)
9963 		return err;
9964 
9965 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
9966 	if (err)
9967 		goto done;
9968 
9969 	if (wanted_branch_name) {
9970 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
9971 			wanted_branch_name += 11;
9972 	}
9973 
9974 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
9975 	    got_ref_cmp_by_commit_timestamp_descending, repo);
9976 	if (err)
9977 		goto done;
9978 
9979 	TAILQ_FOREACH(re, &backup_refs, entry) {
9980 		const char *refname = got_ref_get_name(re->ref);
9981 		char *slash;
9982 
9983 		err = check_cancelled(NULL);
9984 		if (err)
9985 			break;
9986 
9987 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
9988 		if (err)
9989 			break;
9990 
9991 		err = got_object_open_as_commit(&old_commit, repo,
9992 		    old_commit_id);
9993 		if (err)
9994 			break;
9995 
9996 		if (strncmp(backup_ref_prefix, refname,
9997 		    backup_ref_prefix_len) == 0)
9998 			refname += backup_ref_prefix_len;
9999 
10000 		while (refname[0] == '/')
10001 			refname++;
10002 
10003 		branch_name = strdup(refname);
10004 		if (branch_name == NULL) {
10005 			err = got_error_from_errno("strdup");
10006 			break;
10007 		}
10008 		slash = strrchr(branch_name, '/');
10009 		if (slash) {
10010 			*slash = '\0';
10011 			refname += strlen(branch_name) + 1;
10012 		}
10013 
10014 		if (wanted_branch_name == NULL ||
10015 		    strcmp(wanted_branch_name, branch_name) == 0) {
10016 			wanted_branch_found = 1;
10017 			if (delete) {
10018 				err = delete_backup_ref(re->ref,
10019 				    old_commit_id, repo);
10020 			} else {
10021 				err = print_backup_ref(branch_name, refname,
10022 				    old_commit_id, old_commit, refs_idmap,
10023 				    repo);
10024 			}
10025 			if (err)
10026 				break;
10027 		}
10028 
10029 		free(old_commit_id);
10030 		old_commit_id = NULL;
10031 		free(branch_name);
10032 		branch_name = NULL;
10033 		got_object_commit_close(old_commit);
10034 		old_commit = NULL;
10035 	}
10036 
10037 	if (wanted_branch_name && !wanted_branch_found) {
10038 		err = got_error_fmt(GOT_ERR_NOT_REF,
10039 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
10040 	}
10041 done:
10042 	if (refs_idmap)
10043 		got_reflist_object_id_map_free(refs_idmap);
10044 	got_ref_list_free(&refs);
10045 	got_ref_list_free(&backup_refs);
10046 	free(old_commit_id);
10047 	free(branch_name);
10048 	if (old_commit)
10049 		got_object_commit_close(old_commit);
10050 	return err;
10051 }
10052 
10053 static const struct got_error *
10054 abort_progress(void *arg, unsigned char status, const char *path)
10055 {
10056 	/*
10057 	 * Unversioned files should not clutter progress output when
10058 	 * an operation is aborted.
10059 	 */
10060 	if (status == GOT_STATUS_UNVERSIONED)
10061 		return NULL;
10062 
10063 	return update_progress(arg, status, path);
10064 }
10065 
10066 static const struct got_error *
10067 cmd_rebase(int argc, char *argv[])
10068 {
10069 	const struct got_error *error = NULL;
10070 	struct got_worktree *worktree = NULL;
10071 	struct got_repository *repo = NULL;
10072 	struct got_fileindex *fileindex = NULL;
10073 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
10074 	struct got_reference *branch = NULL;
10075 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
10076 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
10077 	struct got_object_id *resume_commit_id = NULL;
10078 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
10079 	struct got_commit_object *commit = NULL;
10080 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
10081 	int histedit_in_progress = 0, merge_in_progress = 0;
10082 	int create_backup = 1, list_backups = 0, delete_backups = 0;
10083 	struct got_object_id_queue commits;
10084 	struct got_pathlist_head merged_paths;
10085 	const struct got_object_id_queue *parent_ids;
10086 	struct got_object_qid *qid, *pid;
10087 	struct got_update_progress_arg upa;
10088 	int *pack_fds = NULL;
10089 
10090 	STAILQ_INIT(&commits);
10091 	TAILQ_INIT(&merged_paths);
10092 	memset(&upa, 0, sizeof(upa));
10093 
10094 	while ((ch = getopt(argc, argv, "aclX")) != -1) {
10095 		switch (ch) {
10096 		case 'a':
10097 			abort_rebase = 1;
10098 			break;
10099 		case 'c':
10100 			continue_rebase = 1;
10101 			break;
10102 		case 'l':
10103 			list_backups = 1;
10104 			break;
10105 		case 'X':
10106 			delete_backups = 1;
10107 			break;
10108 		default:
10109 			usage_rebase();
10110 			/* NOTREACHED */
10111 		}
10112 	}
10113 
10114 	argc -= optind;
10115 	argv += optind;
10116 
10117 #ifndef PROFILE
10118 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10119 	    "unveil", NULL) == -1)
10120 		err(1, "pledge");
10121 #endif
10122 	if (list_backups) {
10123 		if (abort_rebase)
10124 			option_conflict('l', 'a');
10125 		if (continue_rebase)
10126 			option_conflict('l', 'c');
10127 		if (delete_backups)
10128 			option_conflict('l', 'X');
10129 		if (argc != 0 && argc != 1)
10130 			usage_rebase();
10131 	} else if (delete_backups) {
10132 		if (abort_rebase)
10133 			option_conflict('X', 'a');
10134 		if (continue_rebase)
10135 			option_conflict('X', 'c');
10136 		if (list_backups)
10137 			option_conflict('l', 'X');
10138 		if (argc != 0 && argc != 1)
10139 			usage_rebase();
10140 	} else {
10141 		if (abort_rebase && continue_rebase)
10142 			usage_rebase();
10143 		else if (abort_rebase || continue_rebase) {
10144 			if (argc != 0)
10145 				usage_rebase();
10146 		} else if (argc != 1)
10147 			usage_rebase();
10148 	}
10149 
10150 	cwd = getcwd(NULL, 0);
10151 	if (cwd == NULL) {
10152 		error = got_error_from_errno("getcwd");
10153 		goto done;
10154 	}
10155 
10156 	error = got_repo_pack_fds_open(&pack_fds);
10157 	if (error != NULL)
10158 		goto done;
10159 
10160 	error = got_worktree_open(&worktree, cwd);
10161 	if (error) {
10162 		if (list_backups || delete_backups) {
10163 			if (error->code != GOT_ERR_NOT_WORKTREE)
10164 				goto done;
10165 		} else {
10166 			if (error->code == GOT_ERR_NOT_WORKTREE)
10167 				error = wrap_not_worktree_error(error,
10168 				    "rebase", cwd);
10169 			goto done;
10170 		}
10171 	}
10172 
10173 	error = get_gitconfig_path(&gitconfig_path);
10174 	if (error)
10175 		goto done;
10176 	error = got_repo_open(&repo,
10177 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10178 	    gitconfig_path, pack_fds);
10179 	if (error != NULL)
10180 		goto done;
10181 
10182 	error = get_author(&committer, repo, worktree);
10183 	if (error && error->code != GOT_ERR_COMMIT_NO_AUTHOR)
10184 		goto done;
10185 
10186 	error = apply_unveil(got_repo_get_path(repo), 0,
10187 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10188 	if (error)
10189 		goto done;
10190 
10191 	if (list_backups || delete_backups) {
10192 		error = process_backup_refs(
10193 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
10194 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
10195 		goto done; /* nothing else to do */
10196 	}
10197 
10198 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
10199 	    worktree);
10200 	if (error)
10201 		goto done;
10202 	if (histedit_in_progress) {
10203 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
10204 		goto done;
10205 	}
10206 
10207 	error = got_worktree_merge_in_progress(&merge_in_progress,
10208 	    worktree, repo);
10209 	if (error)
10210 		goto done;
10211 	if (merge_in_progress) {
10212 		error = got_error(GOT_ERR_MERGE_BUSY);
10213 		goto done;
10214 	}
10215 
10216 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10217 	if (error)
10218 		goto done;
10219 
10220 	if (abort_rebase) {
10221 		if (!rebase_in_progress) {
10222 			error = got_error(GOT_ERR_NOT_REBASING);
10223 			goto done;
10224 		}
10225 		error = got_worktree_rebase_continue(&resume_commit_id,
10226 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
10227 		    worktree, repo);
10228 		if (error)
10229 			goto done;
10230 		printf("Switching work tree to %s\n",
10231 		    got_ref_get_symref_target(new_base_branch));
10232 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
10233 		    new_base_branch, abort_progress, &upa);
10234 		if (error)
10235 			goto done;
10236 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
10237 		print_merge_progress_stats(&upa);
10238 		goto done; /* nothing else to do */
10239 	}
10240 
10241 	if (continue_rebase) {
10242 		if (!rebase_in_progress) {
10243 			error = got_error(GOT_ERR_NOT_REBASING);
10244 			goto done;
10245 		}
10246 		error = got_worktree_rebase_continue(&resume_commit_id,
10247 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
10248 		    worktree, repo);
10249 		if (error)
10250 			goto done;
10251 
10252 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
10253 		    committer, resume_commit_id, repo);
10254 		if (error)
10255 			goto done;
10256 
10257 		yca_id = got_object_id_dup(resume_commit_id);
10258 		if (yca_id == NULL) {
10259 			error = got_error_from_errno("got_object_id_dup");
10260 			goto done;
10261 		}
10262 	} else {
10263 		error = got_ref_open(&branch, repo, argv[0], 0);
10264 		if (error != NULL)
10265 			goto done;
10266 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
10267 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
10268 			    "will not rebase a branch which lives outside "
10269 			    "the \"refs/heads/\" reference namespace");
10270 			goto done;
10271 		}
10272 	}
10273 
10274 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
10275 	if (error)
10276 		goto done;
10277 
10278 	if (!continue_rebase) {
10279 		struct got_object_id *base_commit_id;
10280 
10281 		base_commit_id = got_worktree_get_base_commit_id(worktree);
10282 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
10283 		    base_commit_id, branch_head_commit_id, 1, repo,
10284 		    check_cancelled, NULL);
10285 		if (error)
10286 			goto done;
10287 		if (yca_id == NULL) {
10288 			error = got_error_msg(GOT_ERR_ANCESTRY,
10289 			    "specified branch shares no common ancestry "
10290 			    "with work tree's branch");
10291 			goto done;
10292 		}
10293 
10294 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
10295 		if (error) {
10296 			if (error->code != GOT_ERR_ANCESTRY)
10297 				goto done;
10298 			error = NULL;
10299 		} else {
10300 			struct got_pathlist_head paths;
10301 			printf("%s is already based on %s\n",
10302 			    got_ref_get_name(branch),
10303 			    got_worktree_get_head_ref_name(worktree));
10304 			error = switch_head_ref(branch, branch_head_commit_id,
10305 			    worktree, repo);
10306 			if (error)
10307 				goto done;
10308 			error = got_worktree_set_base_commit_id(worktree, repo,
10309 			    branch_head_commit_id);
10310 			if (error)
10311 				goto done;
10312 			TAILQ_INIT(&paths);
10313 			error = got_pathlist_append(&paths, "", NULL);
10314 			if (error)
10315 				goto done;
10316 			error = got_worktree_checkout_files(worktree,
10317 			    &paths, repo, update_progress, &upa,
10318 			    check_cancelled, NULL);
10319 			got_pathlist_free(&paths);
10320 			if (error)
10321 				goto done;
10322 			if (upa.did_something) {
10323 				char *id_str;
10324 				error = got_object_id_str(&id_str,
10325 				    branch_head_commit_id);
10326 				if (error)
10327 					goto done;
10328 				printf("Updated to %s: %s\n",
10329 				    got_worktree_get_head_ref_name(worktree),
10330 				    id_str);
10331 				free(id_str);
10332 			} else
10333 				printf("Already up-to-date\n");
10334 			print_update_progress_stats(&upa);
10335 			goto done;
10336 		}
10337 	}
10338 
10339 	commit_id = branch_head_commit_id;
10340 	error = got_object_open_as_commit(&commit, repo, commit_id);
10341 	if (error)
10342 		goto done;
10343 
10344 	parent_ids = got_object_commit_get_parent_ids(commit);
10345 	pid = STAILQ_FIRST(parent_ids);
10346 	if (pid == NULL) {
10347 		error = got_error(GOT_ERR_EMPTY_REBASE);
10348 		goto done;
10349 	}
10350 	error = collect_commits(&commits, commit_id, &pid->id,
10351 	    yca_id, got_worktree_get_path_prefix(worktree),
10352 	    GOT_ERR_REBASE_PATH, repo);
10353 	got_object_commit_close(commit);
10354 	commit = NULL;
10355 	if (error)
10356 		goto done;
10357 
10358 	if (!continue_rebase) {
10359 		error = got_worktree_rebase_prepare(&new_base_branch,
10360 		    &tmp_branch, &fileindex, worktree, branch, repo);
10361 		if (error)
10362 			goto done;
10363 	}
10364 
10365 	if (STAILQ_EMPTY(&commits)) {
10366 		if (continue_rebase) {
10367 			error = rebase_complete(worktree, fileindex,
10368 			    branch, new_base_branch, tmp_branch, repo,
10369 			    create_backup);
10370 			goto done;
10371 		} else {
10372 			/* Fast-forward the reference of the branch. */
10373 			struct got_object_id *new_head_commit_id;
10374 			char *id_str;
10375 			error = got_ref_resolve(&new_head_commit_id, repo,
10376 			    new_base_branch);
10377 			if (error)
10378 				goto done;
10379 			error = got_object_id_str(&id_str, new_head_commit_id);
10380 			if (error)
10381 				goto done;
10382 			printf("Forwarding %s to commit %s\n",
10383 			    got_ref_get_name(branch), id_str);
10384 			free(id_str);
10385 			error = got_ref_change_ref(branch,
10386 			    new_head_commit_id);
10387 			if (error)
10388 				goto done;
10389 			/* No backup needed since objects did not change. */
10390 			create_backup = 0;
10391 		}
10392 	}
10393 
10394 	pid = NULL;
10395 	STAILQ_FOREACH(qid, &commits, entry) {
10396 
10397 		commit_id = &qid->id;
10398 		parent_id = pid ? &pid->id : yca_id;
10399 		pid = qid;
10400 
10401 		memset(&upa, 0, sizeof(upa));
10402 		error = got_worktree_rebase_merge_files(&merged_paths,
10403 		    worktree, fileindex, parent_id, commit_id, repo,
10404 		    update_progress, &upa, check_cancelled, NULL);
10405 		if (error)
10406 			goto done;
10407 
10408 		print_merge_progress_stats(&upa);
10409 		if (upa.conflicts > 0 || upa.missing > 0 ||
10410 		    upa.not_deleted > 0 || upa.unversioned > 0) {
10411 			if (upa.conflicts > 0) {
10412 				error = show_rebase_merge_conflict(&qid->id,
10413 				    repo);
10414 				if (error)
10415 					goto done;
10416 			}
10417 			got_worktree_rebase_pathlist_free(&merged_paths);
10418 			break;
10419 		}
10420 
10421 		error = rebase_commit(&merged_paths, worktree, fileindex,
10422 		    tmp_branch, committer, commit_id, repo);
10423 		got_worktree_rebase_pathlist_free(&merged_paths);
10424 		if (error)
10425 			goto done;
10426 	}
10427 
10428 	if (upa.conflicts > 0 || upa.missing > 0 ||
10429 	    upa.not_deleted > 0 || upa.unversioned > 0) {
10430 		error = got_worktree_rebase_postpone(worktree, fileindex);
10431 		if (error)
10432 			goto done;
10433 		if (upa.conflicts > 0 && upa.missing == 0 &&
10434 		    upa.not_deleted == 0 && upa.unversioned == 0) {
10435 			error = got_error_msg(GOT_ERR_CONFLICTS,
10436 			    "conflicts must be resolved before rebasing "
10437 			    "can continue");
10438 		} else if (upa.conflicts > 0) {
10439 			error = got_error_msg(GOT_ERR_CONFLICTS,
10440 			    "conflicts must be resolved before rebasing "
10441 			    "can continue; changes destined for some "
10442 			    "files were not yet merged and should be "
10443 			    "merged manually if required before the "
10444 			    "rebase operation is continued");
10445 		} else {
10446 			error = got_error_msg(GOT_ERR_CONFLICTS,
10447 			    "changes destined for some files were not "
10448 			    "yet merged and should be merged manually "
10449 			    "if required before the rebase operation "
10450 			    "is continued");
10451 		}
10452 	} else
10453 		error = rebase_complete(worktree, fileindex, branch,
10454 		    new_base_branch, tmp_branch, repo, create_backup);
10455 done:
10456 	free(cwd);
10457 	free(committer);
10458 	free(gitconfig_path);
10459 	got_object_id_queue_free(&commits);
10460 	free(branch_head_commit_id);
10461 	free(resume_commit_id);
10462 	free(yca_id);
10463 	if (commit)
10464 		got_object_commit_close(commit);
10465 	if (branch)
10466 		got_ref_close(branch);
10467 	if (new_base_branch)
10468 		got_ref_close(new_base_branch);
10469 	if (tmp_branch)
10470 		got_ref_close(tmp_branch);
10471 	if (worktree)
10472 		got_worktree_close(worktree);
10473 	if (repo) {
10474 		const struct got_error *close_err = got_repo_close(repo);
10475 		if (error == NULL)
10476 			error = close_err;
10477 	}
10478 	if (pack_fds) {
10479 		const struct got_error *pack_err =
10480 		    got_repo_pack_fds_close(pack_fds);
10481 		if (error == NULL)
10482 			error = pack_err;
10483 	}
10484 	return error;
10485 }
10486 
10487 __dead static void
10488 usage_histedit(void)
10489 {
10490 	fprintf(stderr, "usage: %s histedit [-aceflmX] [-F histedit-script] "
10491 	    "[branch]\n", getprogname());
10492 	exit(1);
10493 }
10494 
10495 #define GOT_HISTEDIT_PICK 'p'
10496 #define GOT_HISTEDIT_EDIT 'e'
10497 #define GOT_HISTEDIT_FOLD 'f'
10498 #define GOT_HISTEDIT_DROP 'd'
10499 #define GOT_HISTEDIT_MESG 'm'
10500 
10501 static const struct got_histedit_cmd {
10502 	unsigned char code;
10503 	const char *name;
10504 	const char *desc;
10505 } got_histedit_cmds[] = {
10506 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
10507 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
10508 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
10509 	    "be used" },
10510 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
10511 	{ GOT_HISTEDIT_MESG, "mesg",
10512 	    "single-line log message for commit above (open editor if empty)" },
10513 };
10514 
10515 struct got_histedit_list_entry {
10516 	TAILQ_ENTRY(got_histedit_list_entry) entry;
10517 	struct got_object_id *commit_id;
10518 	const struct got_histedit_cmd *cmd;
10519 	char *logmsg;
10520 };
10521 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
10522 
10523 static const struct got_error *
10524 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
10525     FILE *f, struct got_repository *repo)
10526 {
10527 	const struct got_error *err = NULL;
10528 	char *logmsg = NULL, *id_str = NULL;
10529 	struct got_commit_object *commit = NULL;
10530 	int n;
10531 
10532 	err = got_object_open_as_commit(&commit, repo, commit_id);
10533 	if (err)
10534 		goto done;
10535 
10536 	err = get_short_logmsg(&logmsg, 34, commit);
10537 	if (err)
10538 		goto done;
10539 
10540 	err = got_object_id_str(&id_str, commit_id);
10541 	if (err)
10542 		goto done;
10543 
10544 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
10545 	if (n < 0)
10546 		err = got_ferror(f, GOT_ERR_IO);
10547 done:
10548 	if (commit)
10549 		got_object_commit_close(commit);
10550 	free(id_str);
10551 	free(logmsg);
10552 	return err;
10553 }
10554 
10555 static const struct got_error *
10556 histedit_write_commit_list(struct got_object_id_queue *commits,
10557     FILE *f, int edit_logmsg_only, int fold_only, int edit_only,
10558     struct got_repository *repo)
10559 {
10560 	const struct got_error *err = NULL;
10561 	struct got_object_qid *qid;
10562 	const char *histedit_cmd = NULL;
10563 
10564 	if (STAILQ_EMPTY(commits))
10565 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
10566 
10567 	STAILQ_FOREACH(qid, commits, entry) {
10568 		histedit_cmd = got_histedit_cmds[0].name;
10569 		if (edit_only)
10570 			histedit_cmd = "edit";
10571 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
10572 			histedit_cmd = "fold";
10573 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
10574 		if (err)
10575 			break;
10576 		if (edit_logmsg_only) {
10577 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
10578 			if (n < 0) {
10579 				err = got_ferror(f, GOT_ERR_IO);
10580 				break;
10581 			}
10582 		}
10583 	}
10584 
10585 	return err;
10586 }
10587 
10588 static const struct got_error *
10589 write_cmd_list(FILE *f, const char *branch_name,
10590     struct got_object_id_queue *commits)
10591 {
10592 	const struct got_error *err = NULL;
10593 	size_t i;
10594 	int n;
10595 	char *id_str;
10596 	struct got_object_qid *qid;
10597 
10598 	qid = STAILQ_FIRST(commits);
10599 	err = got_object_id_str(&id_str, &qid->id);
10600 	if (err)
10601 		return err;
10602 
10603 	n = fprintf(f,
10604 	    "# Editing the history of branch '%s' starting at\n"
10605 	    "# commit %s\n"
10606 	    "# Commits will be processed in order from top to "
10607 	    "bottom of this file.\n", branch_name, id_str);
10608 	if (n < 0) {
10609 		err = got_ferror(f, GOT_ERR_IO);
10610 		goto done;
10611 	}
10612 
10613 	n = fprintf(f, "# Available histedit commands:\n");
10614 	if (n < 0) {
10615 		err = got_ferror(f, GOT_ERR_IO);
10616 		goto done;
10617 	}
10618 
10619 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
10620 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
10621 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
10622 		    cmd->desc);
10623 		if (n < 0) {
10624 			err = got_ferror(f, GOT_ERR_IO);
10625 			break;
10626 		}
10627 	}
10628 done:
10629 	free(id_str);
10630 	return err;
10631 }
10632 
10633 static const struct got_error *
10634 histedit_syntax_error(int lineno)
10635 {
10636 	static char msg[42];
10637 	int ret;
10638 
10639 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
10640 	    lineno);
10641 	if (ret < 0 || (size_t)ret >= sizeof(msg))
10642 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
10643 
10644 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
10645 }
10646 
10647 static const struct got_error *
10648 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
10649     char *logmsg, struct got_repository *repo)
10650 {
10651 	const struct got_error *err;
10652 	struct got_commit_object *folded_commit = NULL;
10653 	char *id_str, *folded_logmsg = NULL;
10654 
10655 	err = got_object_id_str(&id_str, hle->commit_id);
10656 	if (err)
10657 		return err;
10658 
10659 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
10660 	if (err)
10661 		goto done;
10662 
10663 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
10664 	if (err)
10665 		goto done;
10666 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
10667 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
10668 	    folded_logmsg) == -1) {
10669 		err = got_error_from_errno("asprintf");
10670 	}
10671 done:
10672 	if (folded_commit)
10673 		got_object_commit_close(folded_commit);
10674 	free(id_str);
10675 	free(folded_logmsg);
10676 	return err;
10677 }
10678 
10679 static struct got_histedit_list_entry *
10680 get_folded_commits(struct got_histedit_list_entry *hle)
10681 {
10682 	struct got_histedit_list_entry *prev, *folded = NULL;
10683 
10684 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
10685 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
10686 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
10687 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
10688 			folded = prev;
10689 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
10690 	}
10691 
10692 	return folded;
10693 }
10694 
10695 static const struct got_error *
10696 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
10697     struct got_repository *repo)
10698 {
10699 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
10700 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
10701 	const struct got_error *err = NULL;
10702 	struct got_commit_object *commit = NULL;
10703 	int logmsg_len;
10704 	int fd;
10705 	struct got_histedit_list_entry *folded = NULL;
10706 
10707 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
10708 	if (err)
10709 		return err;
10710 
10711 	folded = get_folded_commits(hle);
10712 	if (folded) {
10713 		while (folded != hle) {
10714 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
10715 				folded = TAILQ_NEXT(folded, entry);
10716 				continue;
10717 			}
10718 			err = append_folded_commit_msg(&new_msg, folded,
10719 			    logmsg, repo);
10720 			if (err)
10721 				goto done;
10722 			free(logmsg);
10723 			logmsg = new_msg;
10724 			folded = TAILQ_NEXT(folded, entry);
10725 		}
10726 	}
10727 
10728 	err = got_object_id_str(&id_str, hle->commit_id);
10729 	if (err)
10730 		goto done;
10731 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
10732 	if (err)
10733 		goto done;
10734 	logmsg_len = asprintf(&new_msg,
10735 	    "%s\n# original log message of commit %s: %s",
10736 	    logmsg ? logmsg : "", id_str, orig_logmsg);
10737 	if (logmsg_len == -1) {
10738 		err = got_error_from_errno("asprintf");
10739 		goto done;
10740 	}
10741 	free(logmsg);
10742 	logmsg = new_msg;
10743 
10744 	err = got_object_id_str(&id_str, hle->commit_id);
10745 	if (err)
10746 		goto done;
10747 
10748 	err = got_opentemp_named_fd(&logmsg_path, &fd,
10749 	    GOT_TMPDIR_STR "/got-logmsg", "");
10750 	if (err)
10751 		goto done;
10752 
10753 	write(fd, logmsg, logmsg_len);
10754 	close(fd);
10755 
10756 	err = get_editor(&editor);
10757 	if (err)
10758 		goto done;
10759 
10760 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
10761 	    logmsg_len, 0);
10762 	if (err) {
10763 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
10764 			goto done;
10765 		err = NULL;
10766 		hle->logmsg = strdup(new_msg);
10767 		if (hle->logmsg == NULL)
10768 			err = got_error_from_errno("strdup");
10769 	}
10770 done:
10771 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
10772 		err = got_error_from_errno2("unlink", logmsg_path);
10773 	free(logmsg_path);
10774 	free(logmsg);
10775 	free(orig_logmsg);
10776 	free(editor);
10777 	if (commit)
10778 		got_object_commit_close(commit);
10779 	return err;
10780 }
10781 
10782 static const struct got_error *
10783 histedit_parse_list(struct got_histedit_list *histedit_cmds,
10784     FILE *f, struct got_repository *repo)
10785 {
10786 	const struct got_error *err = NULL;
10787 	char *line = NULL, *p, *end;
10788 	size_t i, size;
10789 	ssize_t len;
10790 	int lineno = 0, lastcmd = -1;
10791 	const struct got_histedit_cmd *cmd;
10792 	struct got_object_id *commit_id = NULL;
10793 	struct got_histedit_list_entry *hle = NULL;
10794 
10795 	for (;;) {
10796 		len = getline(&line, &size, f);
10797 		if (len == -1) {
10798 			const struct got_error *getline_err;
10799 			if (feof(f))
10800 				break;
10801 			getline_err = got_error_from_errno("getline");
10802 			err = got_ferror(f, getline_err->code);
10803 			break;
10804 		}
10805 		lineno++;
10806 		p = line;
10807 		while (isspace((unsigned char)p[0]))
10808 			p++;
10809 		if (p[0] == '#' || p[0] == '\0') {
10810 			free(line);
10811 			line = NULL;
10812 			continue;
10813 		}
10814 		cmd = NULL;
10815 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
10816 			cmd = &got_histedit_cmds[i];
10817 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
10818 			    isspace((unsigned char)p[strlen(cmd->name)])) {
10819 				p += strlen(cmd->name);
10820 				break;
10821 			}
10822 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
10823 				p++;
10824 				break;
10825 			}
10826 		}
10827 		if (i == nitems(got_histedit_cmds)) {
10828 			err = histedit_syntax_error(lineno);
10829 			break;
10830 		}
10831 		while (isspace((unsigned char)p[0]))
10832 			p++;
10833 		if (cmd->code == GOT_HISTEDIT_MESG) {
10834 			if (lastcmd != GOT_HISTEDIT_PICK &&
10835 			    lastcmd != GOT_HISTEDIT_EDIT) {
10836 				err = got_error(GOT_ERR_HISTEDIT_CMD);
10837 				break;
10838 			}
10839 			if (p[0] == '\0') {
10840 				err = histedit_edit_logmsg(hle, repo);
10841 				if (err)
10842 					break;
10843 			} else {
10844 				hle->logmsg = strdup(p);
10845 				if (hle->logmsg == NULL) {
10846 					err = got_error_from_errno("strdup");
10847 					break;
10848 				}
10849 			}
10850 			free(line);
10851 			line = NULL;
10852 			lastcmd = cmd->code;
10853 			continue;
10854 		} else {
10855 			end = p;
10856 			while (end[0] && !isspace((unsigned char)end[0]))
10857 				end++;
10858 			*end = '\0';
10859 
10860 			err = got_object_resolve_id_str(&commit_id, repo, p);
10861 			if (err) {
10862 				/* override error code */
10863 				err = histedit_syntax_error(lineno);
10864 				break;
10865 			}
10866 		}
10867 		hle = malloc(sizeof(*hle));
10868 		if (hle == NULL) {
10869 			err = got_error_from_errno("malloc");
10870 			break;
10871 		}
10872 		hle->cmd = cmd;
10873 		hle->commit_id = commit_id;
10874 		hle->logmsg = NULL;
10875 		commit_id = NULL;
10876 		free(line);
10877 		line = NULL;
10878 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
10879 		lastcmd = cmd->code;
10880 	}
10881 
10882 	free(line);
10883 	free(commit_id);
10884 	return err;
10885 }
10886 
10887 static const struct got_error *
10888 histedit_check_script(struct got_histedit_list *histedit_cmds,
10889     struct got_object_id_queue *commits, struct got_repository *repo)
10890 {
10891 	const struct got_error *err = NULL;
10892 	struct got_object_qid *qid;
10893 	struct got_histedit_list_entry *hle;
10894 	static char msg[92];
10895 	char *id_str;
10896 
10897 	if (TAILQ_EMPTY(histedit_cmds))
10898 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
10899 		    "histedit script contains no commands");
10900 	if (STAILQ_EMPTY(commits))
10901 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
10902 
10903 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
10904 		struct got_histedit_list_entry *hle2;
10905 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
10906 			if (hle == hle2)
10907 				continue;
10908 			if (got_object_id_cmp(hle->commit_id,
10909 			    hle2->commit_id) != 0)
10910 				continue;
10911 			err = got_object_id_str(&id_str, hle->commit_id);
10912 			if (err)
10913 				return err;
10914 			snprintf(msg, sizeof(msg), "commit %s is listed "
10915 			    "more than once in histedit script", id_str);
10916 			free(id_str);
10917 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
10918 		}
10919 	}
10920 
10921 	STAILQ_FOREACH(qid, commits, entry) {
10922 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
10923 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
10924 				break;
10925 		}
10926 		if (hle == NULL) {
10927 			err = got_object_id_str(&id_str, &qid->id);
10928 			if (err)
10929 				return err;
10930 			snprintf(msg, sizeof(msg),
10931 			    "commit %s missing from histedit script", id_str);
10932 			free(id_str);
10933 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
10934 		}
10935 	}
10936 
10937 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
10938 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
10939 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
10940 		    "last commit in histedit script cannot be folded");
10941 
10942 	return NULL;
10943 }
10944 
10945 static const struct got_error *
10946 histedit_run_editor(struct got_histedit_list *histedit_cmds,
10947     const char *path, struct got_object_id_queue *commits,
10948     struct got_repository *repo)
10949 {
10950 	const struct got_error *err = NULL;
10951 	char *editor;
10952 	FILE *f = NULL;
10953 
10954 	err = get_editor(&editor);
10955 	if (err)
10956 		return err;
10957 
10958 	if (spawn_editor(editor, path) == -1) {
10959 		err = got_error_from_errno("failed spawning editor");
10960 		goto done;
10961 	}
10962 
10963 	f = fopen(path, "re");
10964 	if (f == NULL) {
10965 		err = got_error_from_errno("fopen");
10966 		goto done;
10967 	}
10968 	err = histedit_parse_list(histedit_cmds, f, repo);
10969 	if (err)
10970 		goto done;
10971 
10972 	err = histedit_check_script(histedit_cmds, commits, repo);
10973 done:
10974 	if (f && fclose(f) == EOF && err == NULL)
10975 		err = got_error_from_errno("fclose");
10976 	free(editor);
10977 	return err;
10978 }
10979 
10980 static const struct got_error *
10981 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
10982     struct got_object_id_queue *, const char *, const char *,
10983     struct got_repository *);
10984 
10985 static const struct got_error *
10986 histedit_edit_script(struct got_histedit_list *histedit_cmds,
10987     struct got_object_id_queue *commits, const char *branch_name,
10988     int edit_logmsg_only, int fold_only, int edit_only,
10989     struct got_repository *repo)
10990 {
10991 	const struct got_error *err;
10992 	FILE *f = NULL;
10993 	char *path = NULL;
10994 
10995 	err = got_opentemp_named(&path, &f, "got-histedit", "");
10996 	if (err)
10997 		return err;
10998 
10999 	err = write_cmd_list(f, branch_name, commits);
11000 	if (err)
11001 		goto done;
11002 
11003 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
11004 	    fold_only, edit_only, repo);
11005 	if (err)
11006 		goto done;
11007 
11008 	if (edit_logmsg_only || fold_only || edit_only) {
11009 		rewind(f);
11010 		err = histedit_parse_list(histedit_cmds, f, repo);
11011 	} else {
11012 		if (fclose(f) == EOF) {
11013 			err = got_error_from_errno("fclose");
11014 			goto done;
11015 		}
11016 		f = NULL;
11017 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
11018 		if (err) {
11019 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11020 			    err->code != GOT_ERR_HISTEDIT_CMD)
11021 				goto done;
11022 			err = histedit_edit_list_retry(histedit_cmds, err,
11023 			    commits, path, branch_name, repo);
11024 		}
11025 	}
11026 done:
11027 	if (f && fclose(f) == EOF && err == NULL)
11028 		err = got_error_from_errno("fclose");
11029 	if (path && unlink(path) != 0 && err == NULL)
11030 		err = got_error_from_errno2("unlink", path);
11031 	free(path);
11032 	return err;
11033 }
11034 
11035 static const struct got_error *
11036 histedit_save_list(struct got_histedit_list *histedit_cmds,
11037     struct got_worktree *worktree, struct got_repository *repo)
11038 {
11039 	const struct got_error *err = NULL;
11040 	char *path = NULL;
11041 	FILE *f = NULL;
11042 	struct got_histedit_list_entry *hle;
11043 	struct got_commit_object *commit = NULL;
11044 
11045 	err = got_worktree_get_histedit_script_path(&path, worktree);
11046 	if (err)
11047 		return err;
11048 
11049 	f = fopen(path, "we");
11050 	if (f == NULL) {
11051 		err = got_error_from_errno2("fopen", path);
11052 		goto done;
11053 	}
11054 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
11055 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
11056 		    repo);
11057 		if (err)
11058 			break;
11059 
11060 		if (hle->logmsg) {
11061 			int n = fprintf(f, "%c %s\n",
11062 			    GOT_HISTEDIT_MESG, hle->logmsg);
11063 			if (n < 0) {
11064 				err = got_ferror(f, GOT_ERR_IO);
11065 				break;
11066 			}
11067 		}
11068 	}
11069 done:
11070 	if (f && fclose(f) == EOF && err == NULL)
11071 		err = got_error_from_errno("fclose");
11072 	free(path);
11073 	if (commit)
11074 		got_object_commit_close(commit);
11075 	return err;
11076 }
11077 
11078 static void
11079 histedit_free_list(struct got_histedit_list *histedit_cmds)
11080 {
11081 	struct got_histedit_list_entry *hle;
11082 
11083 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
11084 		TAILQ_REMOVE(histedit_cmds, hle, entry);
11085 		free(hle);
11086 	}
11087 }
11088 
11089 static const struct got_error *
11090 histedit_load_list(struct got_histedit_list *histedit_cmds,
11091     const char *path, struct got_repository *repo)
11092 {
11093 	const struct got_error *err = NULL;
11094 	FILE *f = NULL;
11095 
11096 	f = fopen(path, "re");
11097 	if (f == NULL) {
11098 		err = got_error_from_errno2("fopen", path);
11099 		goto done;
11100 	}
11101 
11102 	err = histedit_parse_list(histedit_cmds, f, repo);
11103 done:
11104 	if (f && fclose(f) == EOF && err == NULL)
11105 		err = got_error_from_errno("fclose");
11106 	return err;
11107 }
11108 
11109 static const struct got_error *
11110 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
11111     const struct got_error *edit_err, struct got_object_id_queue *commits,
11112     const char *path, const char *branch_name, struct got_repository *repo)
11113 {
11114 	const struct got_error *err = NULL, *prev_err = edit_err;
11115 	int resp = ' ';
11116 
11117 	while (resp != 'c' && resp != 'r' && resp != 'a') {
11118 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
11119 		    "or (a)bort: ", getprogname(), prev_err->msg);
11120 		resp = getchar();
11121 		if (resp == '\n')
11122 			resp = getchar();
11123 		if (resp == 'c') {
11124 			histedit_free_list(histedit_cmds);
11125 			err = histedit_run_editor(histedit_cmds, path, commits,
11126 			    repo);
11127 			if (err) {
11128 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11129 				    err->code != GOT_ERR_HISTEDIT_CMD)
11130 					break;
11131 				prev_err = err;
11132 				resp = ' ';
11133 				continue;
11134 			}
11135 			break;
11136 		} else if (resp == 'r') {
11137 			histedit_free_list(histedit_cmds);
11138 			err = histedit_edit_script(histedit_cmds,
11139 			    commits, branch_name, 0, 0, 0, repo);
11140 			if (err) {
11141 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11142 				    err->code != GOT_ERR_HISTEDIT_CMD)
11143 					break;
11144 				prev_err = err;
11145 				resp = ' ';
11146 				continue;
11147 			}
11148 			break;
11149 		} else if (resp == 'a') {
11150 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
11151 			break;
11152 		} else
11153 			printf("invalid response '%c'\n", resp);
11154 	}
11155 
11156 	return err;
11157 }
11158 
11159 static const struct got_error *
11160 histedit_complete(struct got_worktree *worktree,
11161     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
11162     struct got_reference *branch, struct got_repository *repo)
11163 {
11164 	printf("Switching work tree to %s\n",
11165 	    got_ref_get_symref_target(branch));
11166 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
11167 	    branch, repo);
11168 }
11169 
11170 static const struct got_error *
11171 show_histedit_progress(struct got_commit_object *commit,
11172     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
11173 {
11174 	const struct got_error *err;
11175 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
11176 
11177 	err = got_object_id_str(&old_id_str, hle->commit_id);
11178 	if (err)
11179 		goto done;
11180 
11181 	if (new_id) {
11182 		err = got_object_id_str(&new_id_str, new_id);
11183 		if (err)
11184 			goto done;
11185 	}
11186 
11187 	old_id_str[12] = '\0';
11188 	if (new_id_str)
11189 		new_id_str[12] = '\0';
11190 
11191 	if (hle->logmsg) {
11192 		logmsg = strdup(hle->logmsg);
11193 		if (logmsg == NULL) {
11194 			err = got_error_from_errno("strdup");
11195 			goto done;
11196 		}
11197 		trim_logmsg(logmsg, 42);
11198 	} else {
11199 		err = get_short_logmsg(&logmsg, 42, commit);
11200 		if (err)
11201 			goto done;
11202 	}
11203 
11204 	switch (hle->cmd->code) {
11205 	case GOT_HISTEDIT_PICK:
11206 	case GOT_HISTEDIT_EDIT:
11207 		printf("%s -> %s: %s\n", old_id_str,
11208 		    new_id_str ? new_id_str : "no-op change", logmsg);
11209 		break;
11210 	case GOT_HISTEDIT_DROP:
11211 	case GOT_HISTEDIT_FOLD:
11212 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
11213 		    logmsg);
11214 		break;
11215 	default:
11216 		break;
11217 	}
11218 done:
11219 	free(old_id_str);
11220 	free(new_id_str);
11221 	return err;
11222 }
11223 
11224 static const struct got_error *
11225 histedit_commit(struct got_pathlist_head *merged_paths,
11226     struct got_worktree *worktree, struct got_fileindex *fileindex,
11227     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
11228     const char *committer, struct got_repository *repo)
11229 {
11230 	const struct got_error *err;
11231 	struct got_commit_object *commit;
11232 	struct got_object_id *new_commit_id;
11233 
11234 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
11235 	    && hle->logmsg == NULL) {
11236 		err = histedit_edit_logmsg(hle, repo);
11237 		if (err)
11238 			return err;
11239 	}
11240 
11241 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
11242 	if (err)
11243 		return err;
11244 
11245 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
11246 	    worktree, fileindex, tmp_branch, committer, commit, hle->commit_id,
11247 	    hle->logmsg, repo);
11248 	if (err) {
11249 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
11250 			goto done;
11251 		err = show_histedit_progress(commit, hle, NULL);
11252 	} else {
11253 		err = show_histedit_progress(commit, hle, new_commit_id);
11254 		free(new_commit_id);
11255 	}
11256 done:
11257 	got_object_commit_close(commit);
11258 	return err;
11259 }
11260 
11261 static const struct got_error *
11262 histedit_skip_commit(struct got_histedit_list_entry *hle,
11263     struct got_worktree *worktree, struct got_repository *repo)
11264 {
11265 	const struct got_error *error;
11266 	struct got_commit_object *commit;
11267 
11268 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
11269 	    repo);
11270 	if (error)
11271 		return error;
11272 
11273 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
11274 	if (error)
11275 		return error;
11276 
11277 	error = show_histedit_progress(commit, hle, NULL);
11278 	got_object_commit_close(commit);
11279 	return error;
11280 }
11281 
11282 static const struct got_error *
11283 check_local_changes(void *arg, unsigned char status,
11284     unsigned char staged_status, const char *path,
11285     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
11286     struct got_object_id *commit_id, int dirfd, const char *de_name)
11287 {
11288 	int *have_local_changes = arg;
11289 
11290 	switch (status) {
11291 	case GOT_STATUS_ADD:
11292 	case GOT_STATUS_DELETE:
11293 	case GOT_STATUS_MODIFY:
11294 	case GOT_STATUS_CONFLICT:
11295 		*have_local_changes = 1;
11296 		return got_error(GOT_ERR_CANCELLED);
11297 	default:
11298 		break;
11299 	}
11300 
11301 	switch (staged_status) {
11302 	case GOT_STATUS_ADD:
11303 	case GOT_STATUS_DELETE:
11304 	case GOT_STATUS_MODIFY:
11305 		*have_local_changes = 1;
11306 		return got_error(GOT_ERR_CANCELLED);
11307 	default:
11308 		break;
11309 	}
11310 
11311 	return NULL;
11312 }
11313 
11314 static const struct got_error *
11315 cmd_histedit(int argc, char *argv[])
11316 {
11317 	const struct got_error *error = NULL;
11318 	struct got_worktree *worktree = NULL;
11319 	struct got_fileindex *fileindex = NULL;
11320 	struct got_repository *repo = NULL;
11321 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
11322 	struct got_reference *branch = NULL;
11323 	struct got_reference *tmp_branch = NULL;
11324 	struct got_object_id *resume_commit_id = NULL;
11325 	struct got_object_id *base_commit_id = NULL;
11326 	struct got_object_id *head_commit_id = NULL;
11327 	struct got_commit_object *commit = NULL;
11328 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
11329 	struct got_update_progress_arg upa;
11330 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
11331 	int edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
11332 	int list_backups = 0, delete_backups = 0;
11333 	const char *edit_script_path = NULL;
11334 	struct got_object_id_queue commits;
11335 	struct got_pathlist_head merged_paths;
11336 	const struct got_object_id_queue *parent_ids;
11337 	struct got_object_qid *pid;
11338 	struct got_histedit_list histedit_cmds;
11339 	struct got_histedit_list_entry *hle;
11340 	int *pack_fds = NULL;
11341 
11342 	STAILQ_INIT(&commits);
11343 	TAILQ_INIT(&histedit_cmds);
11344 	TAILQ_INIT(&merged_paths);
11345 	memset(&upa, 0, sizeof(upa));
11346 
11347 	while ((ch = getopt(argc, argv, "aceF:flmX")) != -1) {
11348 		switch (ch) {
11349 		case 'a':
11350 			abort_edit = 1;
11351 			break;
11352 		case 'c':
11353 			continue_edit = 1;
11354 			break;
11355 		case 'e':
11356 			edit_only = 1;
11357 			break;
11358 		case 'F':
11359 			edit_script_path = optarg;
11360 			break;
11361 		case 'f':
11362 			fold_only = 1;
11363 			break;
11364 		case 'l':
11365 			list_backups = 1;
11366 			break;
11367 		case 'm':
11368 			edit_logmsg_only = 1;
11369 			break;
11370 		case 'X':
11371 			delete_backups = 1;
11372 			break;
11373 		default:
11374 			usage_histedit();
11375 			/* NOTREACHED */
11376 		}
11377 	}
11378 
11379 	argc -= optind;
11380 	argv += optind;
11381 
11382 #ifndef PROFILE
11383 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11384 	    "unveil", NULL) == -1)
11385 		err(1, "pledge");
11386 #endif
11387 	if (abort_edit && continue_edit)
11388 		option_conflict('a', 'c');
11389 	if (edit_script_path && edit_logmsg_only)
11390 		option_conflict('F', 'm');
11391 	if (abort_edit && edit_logmsg_only)
11392 		option_conflict('a', 'm');
11393 	if (continue_edit && edit_logmsg_only)
11394 		option_conflict('c', 'm');
11395 	if (abort_edit && fold_only)
11396 		option_conflict('a', 'f');
11397 	if (continue_edit && fold_only)
11398 		option_conflict('c', 'f');
11399 	if (fold_only && edit_logmsg_only)
11400 		option_conflict('f', 'm');
11401 	if (edit_script_path && fold_only)
11402 		option_conflict('F', 'f');
11403 	if (abort_edit && edit_only)
11404 		option_conflict('a', 'e');
11405 	if (continue_edit && edit_only)
11406 		option_conflict('c', 'e');
11407 	if (edit_only && edit_logmsg_only)
11408 		option_conflict('e', 'm');
11409 	if (edit_script_path && edit_only)
11410 		option_conflict('F', 'e');
11411 	if (list_backups) {
11412 		if (abort_edit)
11413 			option_conflict('l', 'a');
11414 		if (continue_edit)
11415 			option_conflict('l', 'c');
11416 		if (edit_script_path)
11417 			option_conflict('l', 'F');
11418 		if (edit_logmsg_only)
11419 			option_conflict('l', 'm');
11420 		if (fold_only)
11421 			option_conflict('l', 'f');
11422 		if (edit_only)
11423 			option_conflict('l', 'e');
11424 		if (delete_backups)
11425 			option_conflict('l', 'X');
11426 		if (argc != 0 && argc != 1)
11427 			usage_histedit();
11428 	} else if (delete_backups) {
11429 		if (abort_edit)
11430 			option_conflict('X', 'a');
11431 		if (continue_edit)
11432 			option_conflict('X', 'c');
11433 		if (edit_script_path)
11434 			option_conflict('X', 'F');
11435 		if (edit_logmsg_only)
11436 			option_conflict('X', 'm');
11437 		if (fold_only)
11438 			option_conflict('X', 'f');
11439 		if (edit_only)
11440 			option_conflict('X', 'e');
11441 		if (list_backups)
11442 			option_conflict('X', 'l');
11443 		if (argc != 0 && argc != 1)
11444 			usage_histedit();
11445 	} else if (argc != 0)
11446 		usage_histedit();
11447 
11448 	/*
11449 	 * This command cannot apply unveil(2) in all cases because the
11450 	 * user may choose to run an editor to edit the histedit script
11451 	 * and to edit individual commit log messages.
11452 	 * unveil(2) traverses exec(2); if an editor is used we have to
11453 	 * apply unveil after edit script and log messages have been written.
11454 	 * XXX TODO: Make use of unveil(2) where possible.
11455 	 */
11456 
11457 	cwd = getcwd(NULL, 0);
11458 	if (cwd == NULL) {
11459 		error = got_error_from_errno("getcwd");
11460 		goto done;
11461 	}
11462 
11463 	error = got_repo_pack_fds_open(&pack_fds);
11464 	if (error != NULL)
11465 		goto done;
11466 
11467 	error = got_worktree_open(&worktree, cwd);
11468 	if (error) {
11469 		if (list_backups || delete_backups) {
11470 			if (error->code != GOT_ERR_NOT_WORKTREE)
11471 				goto done;
11472 		} else {
11473 			if (error->code == GOT_ERR_NOT_WORKTREE)
11474 				error = wrap_not_worktree_error(error,
11475 				    "histedit", cwd);
11476 			goto done;
11477 		}
11478 	}
11479 
11480 	if (list_backups || delete_backups) {
11481 		error = got_repo_open(&repo,
11482 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11483 		    NULL, pack_fds);
11484 		if (error != NULL)
11485 			goto done;
11486 		error = apply_unveil(got_repo_get_path(repo), 0,
11487 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
11488 		if (error)
11489 			goto done;
11490 		error = process_backup_refs(
11491 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
11492 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11493 		goto done; /* nothing else to do */
11494 	}
11495 
11496 	error = get_gitconfig_path(&gitconfig_path);
11497 	if (error)
11498 		goto done;
11499 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11500 	    gitconfig_path, pack_fds);
11501 	if (error != NULL)
11502 		goto done;
11503 
11504 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11505 	if (error)
11506 		goto done;
11507 	if (rebase_in_progress) {
11508 		error = got_error(GOT_ERR_REBASING);
11509 		goto done;
11510 	}
11511 
11512 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
11513 	    repo);
11514 	if (error)
11515 		goto done;
11516 	if (merge_in_progress) {
11517 		error = got_error(GOT_ERR_MERGE_BUSY);
11518 		goto done;
11519 	}
11520 
11521 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
11522 	if (error)
11523 		goto done;
11524 
11525 	if (edit_in_progress && edit_logmsg_only) {
11526 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11527 		    "histedit operation is in progress in this "
11528 		    "work tree and must be continued or aborted "
11529 		    "before the -m option can be used");
11530 		goto done;
11531 	}
11532 	if (edit_in_progress && fold_only) {
11533 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11534 		    "histedit operation is in progress in this "
11535 		    "work tree and must be continued or aborted "
11536 		    "before the -f option can be used");
11537 		goto done;
11538 	}
11539 	if (edit_in_progress && edit_only) {
11540 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11541 		    "histedit operation is in progress in this "
11542 		    "work tree and must be continued or aborted "
11543 		    "before the -e option can be used");
11544 		goto done;
11545 	}
11546 
11547 	if (edit_in_progress && abort_edit) {
11548 		error = got_worktree_histedit_continue(&resume_commit_id,
11549 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
11550 		    worktree, repo);
11551 		if (error)
11552 			goto done;
11553 		printf("Switching work tree to %s\n",
11554 		    got_ref_get_symref_target(branch));
11555 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
11556 		    branch, base_commit_id, abort_progress, &upa);
11557 		if (error)
11558 			goto done;
11559 		printf("Histedit of %s aborted\n",
11560 		    got_ref_get_symref_target(branch));
11561 		print_merge_progress_stats(&upa);
11562 		goto done; /* nothing else to do */
11563 	} else if (abort_edit) {
11564 		error = got_error(GOT_ERR_NOT_HISTEDIT);
11565 		goto done;
11566 	}
11567 
11568 	error = get_author(&committer, repo, worktree);
11569 	if (error)
11570 		goto done;
11571 
11572 	if (continue_edit) {
11573 		char *path;
11574 
11575 		if (!edit_in_progress) {
11576 			error = got_error(GOT_ERR_NOT_HISTEDIT);
11577 			goto done;
11578 		}
11579 
11580 		error = got_worktree_get_histedit_script_path(&path, worktree);
11581 		if (error)
11582 			goto done;
11583 
11584 		error = histedit_load_list(&histedit_cmds, path, repo);
11585 		free(path);
11586 		if (error)
11587 			goto done;
11588 
11589 		error = got_worktree_histedit_continue(&resume_commit_id,
11590 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
11591 		    worktree, repo);
11592 		if (error)
11593 			goto done;
11594 
11595 		error = got_ref_resolve(&head_commit_id, repo, branch);
11596 		if (error)
11597 			goto done;
11598 
11599 		error = got_object_open_as_commit(&commit, repo,
11600 		    head_commit_id);
11601 		if (error)
11602 			goto done;
11603 		parent_ids = got_object_commit_get_parent_ids(commit);
11604 		pid = STAILQ_FIRST(parent_ids);
11605 		if (pid == NULL) {
11606 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11607 			goto done;
11608 		}
11609 		error = collect_commits(&commits, head_commit_id, &pid->id,
11610 		    base_commit_id, got_worktree_get_path_prefix(worktree),
11611 		    GOT_ERR_HISTEDIT_PATH, repo);
11612 		got_object_commit_close(commit);
11613 		commit = NULL;
11614 		if (error)
11615 			goto done;
11616 	} else {
11617 		if (edit_in_progress) {
11618 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
11619 			goto done;
11620 		}
11621 
11622 		error = got_ref_open(&branch, repo,
11623 		    got_worktree_get_head_ref_name(worktree), 0);
11624 		if (error != NULL)
11625 			goto done;
11626 
11627 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11628 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11629 			    "will not edit commit history of a branch outside "
11630 			    "the \"refs/heads/\" reference namespace");
11631 			goto done;
11632 		}
11633 
11634 		error = got_ref_resolve(&head_commit_id, repo, branch);
11635 		got_ref_close(branch);
11636 		branch = NULL;
11637 		if (error)
11638 			goto done;
11639 
11640 		error = got_object_open_as_commit(&commit, repo,
11641 		    head_commit_id);
11642 		if (error)
11643 			goto done;
11644 		parent_ids = got_object_commit_get_parent_ids(commit);
11645 		pid = STAILQ_FIRST(parent_ids);
11646 		if (pid == NULL) {
11647 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11648 			goto done;
11649 		}
11650 		error = collect_commits(&commits, head_commit_id, &pid->id,
11651 		    got_worktree_get_base_commit_id(worktree),
11652 		    got_worktree_get_path_prefix(worktree),
11653 		    GOT_ERR_HISTEDIT_PATH, repo);
11654 		got_object_commit_close(commit);
11655 		commit = NULL;
11656 		if (error)
11657 			goto done;
11658 
11659 		if (STAILQ_EMPTY(&commits)) {
11660 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11661 			goto done;
11662 		}
11663 
11664 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
11665 		    &base_commit_id, &fileindex, worktree, repo);
11666 		if (error)
11667 			goto done;
11668 
11669 		if (edit_script_path) {
11670 			error = histedit_load_list(&histedit_cmds,
11671 			    edit_script_path, repo);
11672 			if (error) {
11673 				got_worktree_histedit_abort(worktree, fileindex,
11674 				    repo, branch, base_commit_id,
11675 				    abort_progress, &upa);
11676 				print_merge_progress_stats(&upa);
11677 				goto done;
11678 			}
11679 		} else {
11680 			const char *branch_name;
11681 			branch_name = got_ref_get_symref_target(branch);
11682 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
11683 				branch_name += 11;
11684 			error = histedit_edit_script(&histedit_cmds, &commits,
11685 			    branch_name, edit_logmsg_only, fold_only,
11686 			    edit_only, repo);
11687 			if (error) {
11688 				got_worktree_histedit_abort(worktree, fileindex,
11689 				    repo, branch, base_commit_id,
11690 				    abort_progress, &upa);
11691 				print_merge_progress_stats(&upa);
11692 				goto done;
11693 			}
11694 
11695 		}
11696 
11697 		error = histedit_save_list(&histedit_cmds, worktree,
11698 		    repo);
11699 		if (error) {
11700 			got_worktree_histedit_abort(worktree, fileindex,
11701 			    repo, branch, base_commit_id,
11702 			    abort_progress, &upa);
11703 			print_merge_progress_stats(&upa);
11704 			goto done;
11705 		}
11706 
11707 	}
11708 
11709 	error = histedit_check_script(&histedit_cmds, &commits, repo);
11710 	if (error)
11711 		goto done;
11712 
11713 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
11714 		if (resume_commit_id) {
11715 			if (got_object_id_cmp(hle->commit_id,
11716 			    resume_commit_id) != 0)
11717 				continue;
11718 
11719 			resume_commit_id = NULL;
11720 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
11721 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
11722 				error = histedit_skip_commit(hle, worktree,
11723 				    repo);
11724 				if (error)
11725 					goto done;
11726 			} else {
11727 				struct got_pathlist_head paths;
11728 				int have_changes = 0;
11729 
11730 				TAILQ_INIT(&paths);
11731 				error = got_pathlist_append(&paths, "", NULL);
11732 				if (error)
11733 					goto done;
11734 				error = got_worktree_status(worktree, &paths,
11735 				    repo, 0, check_local_changes, &have_changes,
11736 				    check_cancelled, NULL);
11737 				got_pathlist_free(&paths);
11738 				if (error) {
11739 					if (error->code != GOT_ERR_CANCELLED)
11740 						goto done;
11741 					if (sigint_received || sigpipe_received)
11742 						goto done;
11743 				}
11744 				if (have_changes) {
11745 					error = histedit_commit(NULL, worktree,
11746 					    fileindex, tmp_branch, hle,
11747 					    committer, repo);
11748 					if (error)
11749 						goto done;
11750 				} else {
11751 					error = got_object_open_as_commit(
11752 					    &commit, repo, hle->commit_id);
11753 					if (error)
11754 						goto done;
11755 					error = show_histedit_progress(commit,
11756 					    hle, NULL);
11757 					got_object_commit_close(commit);
11758 					commit = NULL;
11759 					if (error)
11760 						goto done;
11761 				}
11762 			}
11763 			continue;
11764 		}
11765 
11766 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
11767 			error = histedit_skip_commit(hle, worktree, repo);
11768 			if (error)
11769 				goto done;
11770 			continue;
11771 		}
11772 
11773 		error = got_object_open_as_commit(&commit, repo,
11774 		    hle->commit_id);
11775 		if (error)
11776 			goto done;
11777 		parent_ids = got_object_commit_get_parent_ids(commit);
11778 		pid = STAILQ_FIRST(parent_ids);
11779 
11780 		error = got_worktree_histedit_merge_files(&merged_paths,
11781 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
11782 		    update_progress, &upa, check_cancelled, NULL);
11783 		if (error)
11784 			goto done;
11785 		got_object_commit_close(commit);
11786 		commit = NULL;
11787 
11788 		print_merge_progress_stats(&upa);
11789 		if (upa.conflicts > 0 || upa.missing > 0 ||
11790 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11791 			if (upa.conflicts > 0) {
11792 				error = show_rebase_merge_conflict(
11793 				    hle->commit_id, repo);
11794 				if (error)
11795 					goto done;
11796 			}
11797 			got_worktree_rebase_pathlist_free(&merged_paths);
11798 			break;
11799 		}
11800 
11801 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
11802 			char *id_str;
11803 			error = got_object_id_str(&id_str, hle->commit_id);
11804 			if (error)
11805 				goto done;
11806 			printf("Stopping histedit for amending commit %s\n",
11807 			    id_str);
11808 			free(id_str);
11809 			got_worktree_rebase_pathlist_free(&merged_paths);
11810 			error = got_worktree_histedit_postpone(worktree,
11811 			    fileindex);
11812 			goto done;
11813 		}
11814 
11815 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
11816 			error = histedit_skip_commit(hle, worktree, repo);
11817 			if (error)
11818 				goto done;
11819 			continue;
11820 		}
11821 
11822 		error = histedit_commit(&merged_paths, worktree, fileindex,
11823 		    tmp_branch, hle, committer, repo);
11824 		got_worktree_rebase_pathlist_free(&merged_paths);
11825 		if (error)
11826 			goto done;
11827 	}
11828 
11829 	if (upa.conflicts > 0 || upa.missing > 0 ||
11830 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11831 		error = got_worktree_histedit_postpone(worktree, fileindex);
11832 		if (error)
11833 			goto done;
11834 		if (upa.conflicts > 0 && upa.missing == 0 &&
11835 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11836 			error = got_error_msg(GOT_ERR_CONFLICTS,
11837 			    "conflicts must be resolved before histedit "
11838 			    "can continue");
11839 		} else if (upa.conflicts > 0) {
11840 			error = got_error_msg(GOT_ERR_CONFLICTS,
11841 			    "conflicts must be resolved before histedit "
11842 			    "can continue; changes destined for some "
11843 			    "files were not yet merged and should be "
11844 			    "merged manually if required before the "
11845 			    "histedit operation is continued");
11846 		} else {
11847 			error = got_error_msg(GOT_ERR_CONFLICTS,
11848 			    "changes destined for some files were not "
11849 			    "yet merged and should be merged manually "
11850 			    "if required before the histedit operation "
11851 			    "is continued");
11852 		}
11853 	} else
11854 		error = histedit_complete(worktree, fileindex, tmp_branch,
11855 		    branch, repo);
11856 done:
11857 	free(cwd);
11858 	free(committer);
11859 	free(gitconfig_path);
11860 	got_object_id_queue_free(&commits);
11861 	histedit_free_list(&histedit_cmds);
11862 	free(head_commit_id);
11863 	free(base_commit_id);
11864 	free(resume_commit_id);
11865 	if (commit)
11866 		got_object_commit_close(commit);
11867 	if (branch)
11868 		got_ref_close(branch);
11869 	if (tmp_branch)
11870 		got_ref_close(tmp_branch);
11871 	if (worktree)
11872 		got_worktree_close(worktree);
11873 	if (repo) {
11874 		const struct got_error *close_err = got_repo_close(repo);
11875 		if (error == NULL)
11876 			error = close_err;
11877 	}
11878 	if (pack_fds) {
11879 		const struct got_error *pack_err =
11880 		    got_repo_pack_fds_close(pack_fds);
11881 		if (error == NULL)
11882 			error = pack_err;
11883 	}
11884 	return error;
11885 }
11886 
11887 __dead static void
11888 usage_integrate(void)
11889 {
11890 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
11891 	exit(1);
11892 }
11893 
11894 static const struct got_error *
11895 cmd_integrate(int argc, char *argv[])
11896 {
11897 	const struct got_error *error = NULL;
11898 	struct got_repository *repo = NULL;
11899 	struct got_worktree *worktree = NULL;
11900 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
11901 	const char *branch_arg = NULL;
11902 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
11903 	struct got_fileindex *fileindex = NULL;
11904 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
11905 	int ch;
11906 	struct got_update_progress_arg upa;
11907 	int *pack_fds = NULL;
11908 
11909 	while ((ch = getopt(argc, argv, "")) != -1) {
11910 		switch (ch) {
11911 		default:
11912 			usage_integrate();
11913 			/* NOTREACHED */
11914 		}
11915 	}
11916 
11917 	argc -= optind;
11918 	argv += optind;
11919 
11920 	if (argc != 1)
11921 		usage_integrate();
11922 	branch_arg = argv[0];
11923 #ifndef PROFILE
11924 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11925 	    "unveil", NULL) == -1)
11926 		err(1, "pledge");
11927 #endif
11928 	cwd = getcwd(NULL, 0);
11929 	if (cwd == NULL) {
11930 		error = got_error_from_errno("getcwd");
11931 		goto done;
11932 	}
11933 
11934 	error = got_repo_pack_fds_open(&pack_fds);
11935 	if (error != NULL)
11936 		goto done;
11937 
11938 	error = got_worktree_open(&worktree, cwd);
11939 	if (error) {
11940 		if (error->code == GOT_ERR_NOT_WORKTREE)
11941 			error = wrap_not_worktree_error(error, "integrate",
11942 			    cwd);
11943 		goto done;
11944 	}
11945 
11946 	error = check_rebase_or_histedit_in_progress(worktree);
11947 	if (error)
11948 		goto done;
11949 
11950 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11951 	    NULL, pack_fds);
11952 	if (error != NULL)
11953 		goto done;
11954 
11955 	error = apply_unveil(got_repo_get_path(repo), 0,
11956 	    got_worktree_get_root_path(worktree));
11957 	if (error)
11958 		goto done;
11959 
11960 	error = check_merge_in_progress(worktree, repo);
11961 	if (error)
11962 		goto done;
11963 
11964 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
11965 		error = got_error_from_errno("asprintf");
11966 		goto done;
11967 	}
11968 
11969 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
11970 	    &base_branch_ref, worktree, refname, repo);
11971 	if (error)
11972 		goto done;
11973 
11974 	refname = strdup(got_ref_get_name(branch_ref));
11975 	if (refname == NULL) {
11976 		error = got_error_from_errno("strdup");
11977 		got_worktree_integrate_abort(worktree, fileindex, repo,
11978 		    branch_ref, base_branch_ref);
11979 		goto done;
11980 	}
11981 	base_refname = strdup(got_ref_get_name(base_branch_ref));
11982 	if (base_refname == NULL) {
11983 		error = got_error_from_errno("strdup");
11984 		got_worktree_integrate_abort(worktree, fileindex, repo,
11985 		    branch_ref, base_branch_ref);
11986 		goto done;
11987 	}
11988 	if (strncmp(base_refname, "refs/heads/", 11) != 0) {
11989 		error = got_error(GOT_ERR_INTEGRATE_BRANCH);
11990 		got_worktree_integrate_abort(worktree, fileindex, repo,
11991 		    branch_ref, base_branch_ref);
11992 		goto done;
11993 	}
11994 
11995 	error = got_ref_resolve(&commit_id, repo, branch_ref);
11996 	if (error)
11997 		goto done;
11998 
11999 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
12000 	if (error)
12001 		goto done;
12002 
12003 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
12004 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
12005 		    "specified branch has already been integrated");
12006 		got_worktree_integrate_abort(worktree, fileindex, repo,
12007 		    branch_ref, base_branch_ref);
12008 		goto done;
12009 	}
12010 
12011 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
12012 	if (error) {
12013 		if (error->code == GOT_ERR_ANCESTRY)
12014 			error = got_error(GOT_ERR_REBASE_REQUIRED);
12015 		got_worktree_integrate_abort(worktree, fileindex, repo,
12016 		    branch_ref, base_branch_ref);
12017 		goto done;
12018 	}
12019 
12020 	memset(&upa, 0, sizeof(upa));
12021 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
12022 	    branch_ref, base_branch_ref, update_progress, &upa,
12023 	    check_cancelled, NULL);
12024 	if (error)
12025 		goto done;
12026 
12027 	printf("Integrated %s into %s\n", refname, base_refname);
12028 	print_update_progress_stats(&upa);
12029 done:
12030 	if (repo) {
12031 		const struct got_error *close_err = got_repo_close(repo);
12032 		if (error == NULL)
12033 			error = close_err;
12034 	}
12035 	if (worktree)
12036 		got_worktree_close(worktree);
12037 	if (pack_fds) {
12038 		const struct got_error *pack_err =
12039 		    got_repo_pack_fds_close(pack_fds);
12040 		if (error == NULL)
12041 			error = pack_err;
12042 	}
12043 	free(cwd);
12044 	free(base_commit_id);
12045 	free(commit_id);
12046 	free(refname);
12047 	free(base_refname);
12048 	return error;
12049 }
12050 
12051 __dead static void
12052 usage_merge(void)
12053 {
12054 	fprintf(stderr, "usage: %s merge [-acn] [branch]\n", getprogname());
12055 	exit(1);
12056 }
12057 
12058 static const struct got_error *
12059 cmd_merge(int argc, char *argv[])
12060 {
12061 	const struct got_error *error = NULL;
12062 	struct got_worktree *worktree = NULL;
12063 	struct got_repository *repo = NULL;
12064 	struct got_fileindex *fileindex = NULL;
12065 	char *cwd = NULL, *id_str = NULL, *author = NULL;
12066 	struct got_reference *branch = NULL, *wt_branch = NULL;
12067 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
12068 	struct got_object_id *wt_branch_tip = NULL;
12069 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
12070 	int interrupt_merge = 0;
12071 	struct got_update_progress_arg upa;
12072 	struct got_object_id *merge_commit_id = NULL;
12073 	char *branch_name = NULL;
12074 	int *pack_fds = NULL;
12075 
12076 	memset(&upa, 0, sizeof(upa));
12077 
12078 	while ((ch = getopt(argc, argv, "acn")) != -1) {
12079 		switch (ch) {
12080 		case 'a':
12081 			abort_merge = 1;
12082 			break;
12083 		case 'c':
12084 			continue_merge = 1;
12085 			break;
12086 		case 'n':
12087 			interrupt_merge = 1;
12088 			break;
12089 		default:
12090 			usage_rebase();
12091 			/* NOTREACHED */
12092 		}
12093 	}
12094 
12095 	argc -= optind;
12096 	argv += optind;
12097 
12098 #ifndef PROFILE
12099 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12100 	    "unveil", NULL) == -1)
12101 		err(1, "pledge");
12102 #endif
12103 
12104 	if (abort_merge && continue_merge)
12105 		option_conflict('a', 'c');
12106 	if (abort_merge || continue_merge) {
12107 		if (argc != 0)
12108 			usage_merge();
12109 	} else if (argc != 1)
12110 		usage_merge();
12111 
12112 	cwd = getcwd(NULL, 0);
12113 	if (cwd == NULL) {
12114 		error = got_error_from_errno("getcwd");
12115 		goto done;
12116 	}
12117 
12118 	error = got_repo_pack_fds_open(&pack_fds);
12119 	if (error != NULL)
12120 		goto done;
12121 
12122 	error = got_worktree_open(&worktree, cwd);
12123 	if (error) {
12124 		if (error->code == GOT_ERR_NOT_WORKTREE)
12125 			error = wrap_not_worktree_error(error,
12126 			    "merge", cwd);
12127 		goto done;
12128 	}
12129 
12130 	error = got_repo_open(&repo,
12131 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL,
12132 	    pack_fds);
12133 	if (error != NULL)
12134 		goto done;
12135 
12136 	error = apply_unveil(got_repo_get_path(repo), 0,
12137 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
12138 	if (error)
12139 		goto done;
12140 
12141 	error = check_rebase_or_histedit_in_progress(worktree);
12142 	if (error)
12143 		goto done;
12144 
12145 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
12146 	    repo);
12147 	if (error)
12148 		goto done;
12149 
12150 	if (abort_merge) {
12151 		if (!merge_in_progress) {
12152 			error = got_error(GOT_ERR_NOT_MERGING);
12153 			goto done;
12154 		}
12155 		error = got_worktree_merge_continue(&branch_name,
12156 		    &branch_tip, &fileindex, worktree, repo);
12157 		if (error)
12158 			goto done;
12159 		error = got_worktree_merge_abort(worktree, fileindex, repo,
12160 		    abort_progress, &upa);
12161 		if (error)
12162 			goto done;
12163 		printf("Merge of %s aborted\n", branch_name);
12164 		goto done; /* nothing else to do */
12165 	}
12166 
12167 	error = get_author(&author, repo, worktree);
12168 	if (error)
12169 		goto done;
12170 
12171 	if (continue_merge) {
12172 		if (!merge_in_progress) {
12173 			error = got_error(GOT_ERR_NOT_MERGING);
12174 			goto done;
12175 		}
12176 		error = got_worktree_merge_continue(&branch_name,
12177 		    &branch_tip, &fileindex, worktree, repo);
12178 		if (error)
12179 			goto done;
12180 	} else {
12181 		error = got_ref_open(&branch, repo, argv[0], 0);
12182 		if (error != NULL)
12183 			goto done;
12184 		branch_name = strdup(got_ref_get_name(branch));
12185 		if (branch_name == NULL) {
12186 			error = got_error_from_errno("strdup");
12187 			goto done;
12188 		}
12189 		error = got_ref_resolve(&branch_tip, repo, branch);
12190 		if (error)
12191 			goto done;
12192 	}
12193 
12194 	error = got_ref_open(&wt_branch, repo,
12195 	    got_worktree_get_head_ref_name(worktree), 0);
12196 	if (error)
12197 		goto done;
12198 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
12199 	if (error)
12200 		goto done;
12201 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
12202 	    wt_branch_tip, branch_tip, 0, repo,
12203 	    check_cancelled, NULL);
12204 	if (error && error->code != GOT_ERR_ANCESTRY)
12205 		goto done;
12206 
12207 	if (!continue_merge) {
12208 		error = check_path_prefix(wt_branch_tip, branch_tip,
12209 		    got_worktree_get_path_prefix(worktree),
12210 		    GOT_ERR_MERGE_PATH, repo);
12211 		if (error)
12212 			goto done;
12213 		if (yca_id) {
12214 			error = check_same_branch(wt_branch_tip, branch,
12215 			    yca_id, repo);
12216 			if (error) {
12217 				if (error->code != GOT_ERR_ANCESTRY)
12218 					goto done;
12219 				error = NULL;
12220 			} else {
12221 				static char msg[512];
12222 				snprintf(msg, sizeof(msg),
12223 				    "cannot create a merge commit because "
12224 				    "%s is based on %s; %s can be integrated "
12225 				    "with 'got integrate' instead", branch_name,
12226 				    got_worktree_get_head_ref_name(worktree),
12227 				    branch_name);
12228 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
12229 				goto done;
12230 			}
12231 		}
12232 		error = got_worktree_merge_prepare(&fileindex, worktree,
12233 		    branch, repo);
12234 		if (error)
12235 			goto done;
12236 
12237 		error = got_worktree_merge_branch(worktree, fileindex,
12238 		    yca_id, branch_tip, repo, update_progress, &upa,
12239 		    check_cancelled, NULL);
12240 		if (error)
12241 			goto done;
12242 		print_merge_progress_stats(&upa);
12243 		if (!upa.did_something) {
12244 			error = got_worktree_merge_abort(worktree, fileindex,
12245 			    repo, abort_progress, &upa);
12246 			if (error)
12247 				goto done;
12248 			printf("Already up-to-date\n");
12249 			goto done;
12250 		}
12251 	}
12252 
12253 	if (interrupt_merge) {
12254 		error = got_worktree_merge_postpone(worktree, fileindex);
12255 		if (error)
12256 			goto done;
12257 		printf("Merge of %s interrupted on request\n", branch_name);
12258 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
12259 	    upa.not_deleted > 0 || upa.unversioned > 0) {
12260 		error = got_worktree_merge_postpone(worktree, fileindex);
12261 		if (error)
12262 			goto done;
12263 		if (upa.conflicts > 0 && upa.missing == 0 &&
12264 		    upa.not_deleted == 0 && upa.unversioned == 0) {
12265 			error = got_error_msg(GOT_ERR_CONFLICTS,
12266 			    "conflicts must be resolved before merging "
12267 			    "can continue");
12268 		} else if (upa.conflicts > 0) {
12269 			error = got_error_msg(GOT_ERR_CONFLICTS,
12270 			    "conflicts must be resolved before merging "
12271 			    "can continue; changes destined for some "
12272 			    "files were not yet merged and "
12273 			    "should be merged manually if required before the "
12274 			    "merge operation is continued");
12275 		} else {
12276 			error = got_error_msg(GOT_ERR_CONFLICTS,
12277 			    "changes destined for some "
12278 			    "files were not yet merged and should be "
12279 			    "merged manually if required before the "
12280 			    "merge operation is continued");
12281 		}
12282 		goto done;
12283 	} else {
12284 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
12285 		    fileindex, author, NULL, 1, branch_tip, branch_name,
12286 		    repo, continue_merge ? print_status : NULL, NULL);
12287 		if (error)
12288 			goto done;
12289 		error = got_worktree_merge_complete(worktree, fileindex, repo);
12290 		if (error)
12291 			goto done;
12292 		error = got_object_id_str(&id_str, merge_commit_id);
12293 		if (error)
12294 			goto done;
12295 		printf("Merged %s into %s: %s\n", branch_name,
12296 		    got_worktree_get_head_ref_name(worktree),
12297 		    id_str);
12298 
12299 	}
12300 done:
12301 	free(id_str);
12302 	free(merge_commit_id);
12303 	free(author);
12304 	free(branch_tip);
12305 	free(branch_name);
12306 	free(yca_id);
12307 	if (branch)
12308 		got_ref_close(branch);
12309 	if (wt_branch)
12310 		got_ref_close(wt_branch);
12311 	if (worktree)
12312 		got_worktree_close(worktree);
12313 	if (repo) {
12314 		const struct got_error *close_err = got_repo_close(repo);
12315 		if (error == NULL)
12316 			error = close_err;
12317 	}
12318 	if (pack_fds) {
12319 		const struct got_error *pack_err =
12320 		    got_repo_pack_fds_close(pack_fds);
12321 		if (error == NULL)
12322 			error = pack_err;
12323 	}
12324 	return error;
12325 }
12326 
12327 __dead static void
12328 usage_stage(void)
12329 {
12330 	fprintf(stderr, "usage: %s stage [-lpS] [-F response-script] "
12331 	    "[path ...]\n", getprogname());
12332 	exit(1);
12333 }
12334 
12335 static const struct got_error *
12336 print_stage(void *arg, unsigned char status, unsigned char staged_status,
12337     const char *path, struct got_object_id *blob_id,
12338     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
12339     int dirfd, const char *de_name)
12340 {
12341 	const struct got_error *err = NULL;
12342 	char *id_str = NULL;
12343 
12344 	if (staged_status != GOT_STATUS_ADD &&
12345 	    staged_status != GOT_STATUS_MODIFY &&
12346 	    staged_status != GOT_STATUS_DELETE)
12347 		return NULL;
12348 
12349 	if (staged_status == GOT_STATUS_ADD ||
12350 	    staged_status == GOT_STATUS_MODIFY)
12351 		err = got_object_id_str(&id_str, staged_blob_id);
12352 	else
12353 		err = got_object_id_str(&id_str, blob_id);
12354 	if (err)
12355 		return err;
12356 
12357 	printf("%s %c %s\n", id_str, staged_status, path);
12358 	free(id_str);
12359 	return NULL;
12360 }
12361 
12362 static const struct got_error *
12363 cmd_stage(int argc, char *argv[])
12364 {
12365 	const struct got_error *error = NULL;
12366 	struct got_repository *repo = NULL;
12367 	struct got_worktree *worktree = NULL;
12368 	char *cwd = NULL;
12369 	struct got_pathlist_head paths;
12370 	struct got_pathlist_entry *pe;
12371 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
12372 	FILE *patch_script_file = NULL;
12373 	const char *patch_script_path = NULL;
12374 	struct choose_patch_arg cpa;
12375 	int *pack_fds = NULL;
12376 
12377 	TAILQ_INIT(&paths);
12378 
12379 	while ((ch = getopt(argc, argv, "F:lpS")) != -1) {
12380 		switch (ch) {
12381 		case 'F':
12382 			patch_script_path = optarg;
12383 			break;
12384 		case 'l':
12385 			list_stage = 1;
12386 			break;
12387 		case 'p':
12388 			pflag = 1;
12389 			break;
12390 		case 'S':
12391 			allow_bad_symlinks = 1;
12392 			break;
12393 		default:
12394 			usage_stage();
12395 			/* NOTREACHED */
12396 		}
12397 	}
12398 
12399 	argc -= optind;
12400 	argv += optind;
12401 
12402 #ifndef PROFILE
12403 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12404 	    "unveil", NULL) == -1)
12405 		err(1, "pledge");
12406 #endif
12407 	if (list_stage && (pflag || patch_script_path))
12408 		errx(1, "-l option cannot be used with other options");
12409 	if (patch_script_path && !pflag)
12410 		errx(1, "-F option can only be used together with -p option");
12411 
12412 	cwd = getcwd(NULL, 0);
12413 	if (cwd == NULL) {
12414 		error = got_error_from_errno("getcwd");
12415 		goto done;
12416 	}
12417 
12418 	error = got_repo_pack_fds_open(&pack_fds);
12419 	if (error != NULL)
12420 		goto done;
12421 
12422 	error = got_worktree_open(&worktree, cwd);
12423 	if (error) {
12424 		if (error->code == GOT_ERR_NOT_WORKTREE)
12425 			error = wrap_not_worktree_error(error, "stage", cwd);
12426 		goto done;
12427 	}
12428 
12429 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12430 	    NULL, pack_fds);
12431 	if (error != NULL)
12432 		goto done;
12433 
12434 	if (patch_script_path) {
12435 		patch_script_file = fopen(patch_script_path, "re");
12436 		if (patch_script_file == NULL) {
12437 			error = got_error_from_errno2("fopen",
12438 			    patch_script_path);
12439 			goto done;
12440 		}
12441 	}
12442 	error = apply_unveil(got_repo_get_path(repo), 0,
12443 	    got_worktree_get_root_path(worktree));
12444 	if (error)
12445 		goto done;
12446 
12447 	error = check_merge_in_progress(worktree, repo);
12448 	if (error)
12449 		goto done;
12450 
12451 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
12452 	if (error)
12453 		goto done;
12454 
12455 	if (list_stage)
12456 		error = got_worktree_status(worktree, &paths, repo, 0,
12457 		    print_stage, NULL, check_cancelled, NULL);
12458 	else {
12459 		cpa.patch_script_file = patch_script_file;
12460 		cpa.action = "stage";
12461 		error = got_worktree_stage(worktree, &paths,
12462 		    pflag ? NULL : print_status, NULL,
12463 		    pflag ? choose_patch : NULL, &cpa,
12464 		    allow_bad_symlinks, repo);
12465 	}
12466 done:
12467 	if (patch_script_file && fclose(patch_script_file) == EOF &&
12468 	    error == NULL)
12469 		error = got_error_from_errno2("fclose", patch_script_path);
12470 	if (repo) {
12471 		const struct got_error *close_err = got_repo_close(repo);
12472 		if (error == NULL)
12473 			error = close_err;
12474 	}
12475 	if (worktree)
12476 		got_worktree_close(worktree);
12477 	if (pack_fds) {
12478 		const struct got_error *pack_err =
12479 		    got_repo_pack_fds_close(pack_fds);
12480 		if (error == NULL)
12481 			error = pack_err;
12482 	}
12483 	TAILQ_FOREACH(pe, &paths, entry)
12484 		free((char *)pe->path);
12485 	got_pathlist_free(&paths);
12486 	free(cwd);
12487 	return error;
12488 }
12489 
12490 __dead static void
12491 usage_unstage(void)
12492 {
12493 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
12494 	    "[path ...]\n", getprogname());
12495 	exit(1);
12496 }
12497 
12498 
12499 static const struct got_error *
12500 cmd_unstage(int argc, char *argv[])
12501 {
12502 	const struct got_error *error = NULL;
12503 	struct got_repository *repo = NULL;
12504 	struct got_worktree *worktree = NULL;
12505 	char *cwd = NULL;
12506 	struct got_pathlist_head paths;
12507 	struct got_pathlist_entry *pe;
12508 	int ch, pflag = 0;
12509 	struct got_update_progress_arg upa;
12510 	FILE *patch_script_file = NULL;
12511 	const char *patch_script_path = NULL;
12512 	struct choose_patch_arg cpa;
12513 	int *pack_fds = NULL;
12514 
12515 	TAILQ_INIT(&paths);
12516 
12517 	while ((ch = getopt(argc, argv, "F:p")) != -1) {
12518 		switch (ch) {
12519 		case 'F':
12520 			patch_script_path = optarg;
12521 			break;
12522 		case 'p':
12523 			pflag = 1;
12524 			break;
12525 		default:
12526 			usage_unstage();
12527 			/* NOTREACHED */
12528 		}
12529 	}
12530 
12531 	argc -= optind;
12532 	argv += optind;
12533 
12534 #ifndef PROFILE
12535 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12536 	    "unveil", NULL) == -1)
12537 		err(1, "pledge");
12538 #endif
12539 	if (patch_script_path && !pflag)
12540 		errx(1, "-F option can only be used together with -p option");
12541 
12542 	cwd = getcwd(NULL, 0);
12543 	if (cwd == NULL) {
12544 		error = got_error_from_errno("getcwd");
12545 		goto done;
12546 	}
12547 
12548 	error = got_repo_pack_fds_open(&pack_fds);
12549 	if (error != NULL)
12550 		goto done;
12551 
12552 	error = got_worktree_open(&worktree, cwd);
12553 	if (error) {
12554 		if (error->code == GOT_ERR_NOT_WORKTREE)
12555 			error = wrap_not_worktree_error(error, "unstage", cwd);
12556 		goto done;
12557 	}
12558 
12559 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12560 	    NULL, pack_fds);
12561 	if (error != NULL)
12562 		goto done;
12563 
12564 	if (patch_script_path) {
12565 		patch_script_file = fopen(patch_script_path, "re");
12566 		if (patch_script_file == NULL) {
12567 			error = got_error_from_errno2("fopen",
12568 			    patch_script_path);
12569 			goto done;
12570 		}
12571 	}
12572 
12573 	error = apply_unveil(got_repo_get_path(repo), 0,
12574 	    got_worktree_get_root_path(worktree));
12575 	if (error)
12576 		goto done;
12577 
12578 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
12579 	if (error)
12580 		goto done;
12581 
12582 	cpa.patch_script_file = patch_script_file;
12583 	cpa.action = "unstage";
12584 	memset(&upa, 0, sizeof(upa));
12585 	error = got_worktree_unstage(worktree, &paths, update_progress,
12586 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
12587 	if (!error)
12588 		print_merge_progress_stats(&upa);
12589 done:
12590 	if (patch_script_file && fclose(patch_script_file) == EOF &&
12591 	    error == NULL)
12592 		error = got_error_from_errno2("fclose", patch_script_path);
12593 	if (repo) {
12594 		const struct got_error *close_err = got_repo_close(repo);
12595 		if (error == NULL)
12596 			error = close_err;
12597 	}
12598 	if (worktree)
12599 		got_worktree_close(worktree);
12600 	if (pack_fds) {
12601 		const struct got_error *pack_err =
12602 		    got_repo_pack_fds_close(pack_fds);
12603 		if (error == NULL)
12604 			error = pack_err;
12605 	}
12606 	TAILQ_FOREACH(pe, &paths, entry)
12607 		free((char *)pe->path);
12608 	got_pathlist_free(&paths);
12609 	free(cwd);
12610 	return error;
12611 }
12612 
12613 __dead static void
12614 usage_cat(void)
12615 {
12616 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
12617 	    "arg ...\n", getprogname());
12618 	exit(1);
12619 }
12620 
12621 static const struct got_error *
12622 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12623 {
12624 	const struct got_error *err;
12625 	struct got_blob_object *blob;
12626 	int fd = -1;
12627 
12628 	fd = got_opentempfd();
12629 	if (fd == -1)
12630 		return got_error_from_errno("got_opentempfd");
12631 
12632 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
12633 	if (err)
12634 		goto done;
12635 
12636 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
12637 done:
12638 	if (fd != -1 && close(fd) == -1 && err == NULL)
12639 		err = got_error_from_errno("close");
12640 	if (blob)
12641 		got_object_blob_close(blob);
12642 	return err;
12643 }
12644 
12645 static const struct got_error *
12646 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12647 {
12648 	const struct got_error *err;
12649 	struct got_tree_object *tree;
12650 	int nentries, i;
12651 
12652 	err = got_object_open_as_tree(&tree, repo, id);
12653 	if (err)
12654 		return err;
12655 
12656 	nentries = got_object_tree_get_nentries(tree);
12657 	for (i = 0; i < nentries; i++) {
12658 		struct got_tree_entry *te;
12659 		char *id_str;
12660 		if (sigint_received || sigpipe_received)
12661 			break;
12662 		te = got_object_tree_get_entry(tree, i);
12663 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
12664 		if (err)
12665 			break;
12666 		fprintf(outfile, "%s %.7o %s\n", id_str,
12667 		    got_tree_entry_get_mode(te),
12668 		    got_tree_entry_get_name(te));
12669 		free(id_str);
12670 	}
12671 
12672 	got_object_tree_close(tree);
12673 	return err;
12674 }
12675 
12676 static const struct got_error *
12677 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12678 {
12679 	const struct got_error *err;
12680 	struct got_commit_object *commit;
12681 	const struct got_object_id_queue *parent_ids;
12682 	struct got_object_qid *pid;
12683 	char *id_str = NULL;
12684 	const char *logmsg = NULL;
12685 	char gmtoff[6];
12686 
12687 	err = got_object_open_as_commit(&commit, repo, id);
12688 	if (err)
12689 		return err;
12690 
12691 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
12692 	if (err)
12693 		goto done;
12694 
12695 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
12696 	parent_ids = got_object_commit_get_parent_ids(commit);
12697 	fprintf(outfile, "numparents %d\n",
12698 	    got_object_commit_get_nparents(commit));
12699 	STAILQ_FOREACH(pid, parent_ids, entry) {
12700 		char *pid_str;
12701 		err = got_object_id_str(&pid_str, &pid->id);
12702 		if (err)
12703 			goto done;
12704 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
12705 		free(pid_str);
12706 	}
12707 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12708 	    got_object_commit_get_author_gmtoff(commit));
12709 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
12710 	    got_object_commit_get_author(commit),
12711 	    (long long)got_object_commit_get_author_time(commit),
12712 	    gmtoff);
12713 
12714 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12715 	    got_object_commit_get_committer_gmtoff(commit));
12716 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
12717 	    got_object_commit_get_committer(commit),
12718 	    (long long)got_object_commit_get_committer_time(commit),
12719 	    gmtoff);
12720 
12721 	logmsg = got_object_commit_get_logmsg_raw(commit);
12722 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
12723 	fprintf(outfile, "%s", logmsg);
12724 done:
12725 	free(id_str);
12726 	got_object_commit_close(commit);
12727 	return err;
12728 }
12729 
12730 static const struct got_error *
12731 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12732 {
12733 	const struct got_error *err;
12734 	struct got_tag_object *tag;
12735 	char *id_str = NULL;
12736 	const char *tagmsg = NULL;
12737 	char gmtoff[6];
12738 
12739 	err = got_object_open_as_tag(&tag, repo, id);
12740 	if (err)
12741 		return err;
12742 
12743 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
12744 	if (err)
12745 		goto done;
12746 
12747 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
12748 
12749 	switch (got_object_tag_get_object_type(tag)) {
12750 	case GOT_OBJ_TYPE_BLOB:
12751 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12752 		    GOT_OBJ_LABEL_BLOB);
12753 		break;
12754 	case GOT_OBJ_TYPE_TREE:
12755 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12756 		    GOT_OBJ_LABEL_TREE);
12757 		break;
12758 	case GOT_OBJ_TYPE_COMMIT:
12759 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12760 		    GOT_OBJ_LABEL_COMMIT);
12761 		break;
12762 	case GOT_OBJ_TYPE_TAG:
12763 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12764 		    GOT_OBJ_LABEL_TAG);
12765 		break;
12766 	default:
12767 		break;
12768 	}
12769 
12770 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
12771 	    got_object_tag_get_name(tag));
12772 
12773 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12774 	    got_object_tag_get_tagger_gmtoff(tag));
12775 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
12776 	    got_object_tag_get_tagger(tag),
12777 	    (long long)got_object_tag_get_tagger_time(tag),
12778 	    gmtoff);
12779 
12780 	tagmsg = got_object_tag_get_message(tag);
12781 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
12782 	fprintf(outfile, "%s", tagmsg);
12783 done:
12784 	free(id_str);
12785 	got_object_tag_close(tag);
12786 	return err;
12787 }
12788 
12789 static const struct got_error *
12790 cmd_cat(int argc, char *argv[])
12791 {
12792 	const struct got_error *error;
12793 	struct got_repository *repo = NULL;
12794 	struct got_worktree *worktree = NULL;
12795 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
12796 	const char *commit_id_str = NULL;
12797 	struct got_object_id *id = NULL, *commit_id = NULL;
12798 	struct got_commit_object *commit = NULL;
12799 	int ch, obj_type, i, force_path = 0;
12800 	struct got_reflist_head refs;
12801 	int *pack_fds = NULL;
12802 
12803 	TAILQ_INIT(&refs);
12804 
12805 #ifndef PROFILE
12806 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
12807 	    NULL) == -1)
12808 		err(1, "pledge");
12809 #endif
12810 
12811 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
12812 		switch (ch) {
12813 		case 'c':
12814 			commit_id_str = optarg;
12815 			break;
12816 		case 'P':
12817 			force_path = 1;
12818 			break;
12819 		case 'r':
12820 			repo_path = realpath(optarg, NULL);
12821 			if (repo_path == NULL)
12822 				return got_error_from_errno2("realpath",
12823 				    optarg);
12824 			got_path_strip_trailing_slashes(repo_path);
12825 			break;
12826 		default:
12827 			usage_cat();
12828 			/* NOTREACHED */
12829 		}
12830 	}
12831 
12832 	argc -= optind;
12833 	argv += optind;
12834 
12835 	cwd = getcwd(NULL, 0);
12836 	if (cwd == NULL) {
12837 		error = got_error_from_errno("getcwd");
12838 		goto done;
12839 	}
12840 
12841 	error = got_repo_pack_fds_open(&pack_fds);
12842 	if (error != NULL)
12843 		goto done;
12844 
12845 	if (repo_path == NULL) {
12846 		error = got_worktree_open(&worktree, cwd);
12847 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
12848 			goto done;
12849 		if (worktree) {
12850 			repo_path = strdup(
12851 			    got_worktree_get_repo_path(worktree));
12852 			if (repo_path == NULL) {
12853 				error = got_error_from_errno("strdup");
12854 				goto done;
12855 			}
12856 
12857 			/* Release work tree lock. */
12858 			got_worktree_close(worktree);
12859 			worktree = NULL;
12860 		}
12861 	}
12862 
12863 	if (repo_path == NULL) {
12864 		repo_path = strdup(cwd);
12865 		if (repo_path == NULL)
12866 			return got_error_from_errno("strdup");
12867 	}
12868 
12869 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
12870 	free(repo_path);
12871 	if (error != NULL)
12872 		goto done;
12873 
12874 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
12875 	if (error)
12876 		goto done;
12877 
12878 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
12879 	if (error)
12880 		goto done;
12881 
12882 	if (commit_id_str == NULL)
12883 		commit_id_str = GOT_REF_HEAD;
12884 	error = got_repo_match_object_id(&commit_id, NULL,
12885 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
12886 	if (error)
12887 		goto done;
12888 
12889 	error = got_object_open_as_commit(&commit, repo, commit_id);
12890 	if (error)
12891 		goto done;
12892 
12893 	for (i = 0; i < argc; i++) {
12894 		if (force_path) {
12895 			error = got_object_id_by_path(&id, repo, commit,
12896 			    argv[i]);
12897 			if (error)
12898 				break;
12899 		} else {
12900 			error = got_repo_match_object_id(&id, &label, argv[i],
12901 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
12902 			    repo);
12903 			if (error) {
12904 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
12905 				    error->code != GOT_ERR_NOT_REF)
12906 					break;
12907 				error = got_object_id_by_path(&id, repo,
12908 				    commit, argv[i]);
12909 				if (error)
12910 					break;
12911 			}
12912 		}
12913 
12914 		error = got_object_get_type(&obj_type, repo, id);
12915 		if (error)
12916 			break;
12917 
12918 		switch (obj_type) {
12919 		case GOT_OBJ_TYPE_BLOB:
12920 			error = cat_blob(id, repo, stdout);
12921 			break;
12922 		case GOT_OBJ_TYPE_TREE:
12923 			error = cat_tree(id, repo, stdout);
12924 			break;
12925 		case GOT_OBJ_TYPE_COMMIT:
12926 			error = cat_commit(id, repo, stdout);
12927 			break;
12928 		case GOT_OBJ_TYPE_TAG:
12929 			error = cat_tag(id, repo, stdout);
12930 			break;
12931 		default:
12932 			error = got_error(GOT_ERR_OBJ_TYPE);
12933 			break;
12934 		}
12935 		if (error)
12936 			break;
12937 		free(label);
12938 		label = NULL;
12939 		free(id);
12940 		id = NULL;
12941 	}
12942 done:
12943 	free(label);
12944 	free(id);
12945 	free(commit_id);
12946 	if (commit)
12947 		got_object_commit_close(commit);
12948 	if (worktree)
12949 		got_worktree_close(worktree);
12950 	if (repo) {
12951 		const struct got_error *close_err = got_repo_close(repo);
12952 		if (error == NULL)
12953 			error = close_err;
12954 	}
12955 	if (pack_fds) {
12956 		const struct got_error *pack_err =
12957 		    got_repo_pack_fds_close(pack_fds);
12958 		if (error == NULL)
12959 			error = pack_err;
12960 	}
12961 
12962 	got_ref_list_free(&refs);
12963 	return error;
12964 }
12965 
12966 __dead static void
12967 usage_info(void)
12968 {
12969 	fprintf(stderr, "usage: %s info [path ...]\n",
12970 	    getprogname());
12971 	exit(1);
12972 }
12973 
12974 static const struct got_error *
12975 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
12976     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12977     struct got_object_id *commit_id)
12978 {
12979 	const struct got_error *err = NULL;
12980 	char *id_str = NULL;
12981 	char datebuf[128];
12982 	struct tm mytm, *tm;
12983 	struct got_pathlist_head *paths = arg;
12984 	struct got_pathlist_entry *pe;
12985 
12986 	/*
12987 	 * Clear error indication from any of the path arguments which
12988 	 * would cause this file index entry to be displayed.
12989 	 */
12990 	TAILQ_FOREACH(pe, paths, entry) {
12991 		if (got_path_cmp(path, pe->path, strlen(path),
12992 		    pe->path_len) == 0 ||
12993 		    got_path_is_child(path, pe->path, pe->path_len))
12994 			pe->data = NULL; /* no error */
12995 	}
12996 
12997 	printf(GOT_COMMIT_SEP_STR);
12998 	if (S_ISLNK(mode))
12999 		printf("symlink: %s\n", path);
13000 	else if (S_ISREG(mode)) {
13001 		printf("file: %s\n", path);
13002 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
13003 	} else if (S_ISDIR(mode))
13004 		printf("directory: %s\n", path);
13005 	else
13006 		printf("something: %s\n", path);
13007 
13008 	tm = localtime_r(&mtime, &mytm);
13009 	if (tm == NULL)
13010 		return NULL;
13011 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
13012 		return got_error(GOT_ERR_NO_SPACE);
13013 	printf("timestamp: %s\n", datebuf);
13014 
13015 	if (blob_id) {
13016 		err = got_object_id_str(&id_str, blob_id);
13017 		if (err)
13018 			return err;
13019 		printf("based on blob: %s\n", id_str);
13020 		free(id_str);
13021 	}
13022 
13023 	if (staged_blob_id) {
13024 		err = got_object_id_str(&id_str, staged_blob_id);
13025 		if (err)
13026 			return err;
13027 		printf("based on staged blob: %s\n", id_str);
13028 		free(id_str);
13029 	}
13030 
13031 	if (commit_id) {
13032 		err = got_object_id_str(&id_str, commit_id);
13033 		if (err)
13034 			return err;
13035 		printf("based on commit: %s\n", id_str);
13036 		free(id_str);
13037 	}
13038 
13039 	return NULL;
13040 }
13041 
13042 static const struct got_error *
13043 cmd_info(int argc, char *argv[])
13044 {
13045 	const struct got_error *error = NULL;
13046 	struct got_worktree *worktree = NULL;
13047 	char *cwd = NULL, *id_str = NULL;
13048 	struct got_pathlist_head paths;
13049 	struct got_pathlist_entry *pe;
13050 	char *uuidstr = NULL;
13051 	int ch, show_files = 0;
13052 
13053 	TAILQ_INIT(&paths);
13054 
13055 	while ((ch = getopt(argc, argv, "")) != -1) {
13056 		switch (ch) {
13057 		default:
13058 			usage_info();
13059 			/* NOTREACHED */
13060 		}
13061 	}
13062 
13063 	argc -= optind;
13064 	argv += optind;
13065 
13066 #ifndef PROFILE
13067 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
13068 	    NULL) == -1)
13069 		err(1, "pledge");
13070 #endif
13071 	cwd = getcwd(NULL, 0);
13072 	if (cwd == NULL) {
13073 		error = got_error_from_errno("getcwd");
13074 		goto done;
13075 	}
13076 
13077 	error = got_worktree_open(&worktree, cwd);
13078 	if (error) {
13079 		if (error->code == GOT_ERR_NOT_WORKTREE)
13080 			error = wrap_not_worktree_error(error, "info", cwd);
13081 		goto done;
13082 	}
13083 
13084 #ifndef PROFILE
13085 	/* Remove "wpath cpath proc exec sendfd" promises. */
13086 	if (pledge("stdio rpath flock unveil", NULL) == -1)
13087 		err(1, "pledge");
13088 #endif
13089 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
13090 	if (error)
13091 		goto done;
13092 
13093 	if (argc >= 1) {
13094 		error = get_worktree_paths_from_argv(&paths, argc, argv,
13095 		    worktree);
13096 		if (error)
13097 			goto done;
13098 		show_files = 1;
13099 	}
13100 
13101 	error = got_object_id_str(&id_str,
13102 	    got_worktree_get_base_commit_id(worktree));
13103 	if (error)
13104 		goto done;
13105 
13106 	error = got_worktree_get_uuid(&uuidstr, worktree);
13107 	if (error)
13108 		goto done;
13109 
13110 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
13111 	printf("work tree base commit: %s\n", id_str);
13112 	printf("work tree path prefix: %s\n",
13113 	    got_worktree_get_path_prefix(worktree));
13114 	printf("work tree branch reference: %s\n",
13115 	    got_worktree_get_head_ref_name(worktree));
13116 	printf("work tree UUID: %s\n", uuidstr);
13117 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
13118 
13119 	if (show_files) {
13120 		struct got_pathlist_entry *pe;
13121 		TAILQ_FOREACH(pe, &paths, entry) {
13122 			if (pe->path_len == 0)
13123 				continue;
13124 			/*
13125 			 * Assume this path will fail. This will be corrected
13126 			 * in print_path_info() in case the path does suceeed.
13127 			 */
13128 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
13129 		}
13130 		error = got_worktree_path_info(worktree, &paths,
13131 		    print_path_info, &paths, check_cancelled, NULL);
13132 		if (error)
13133 			goto done;
13134 		TAILQ_FOREACH(pe, &paths, entry) {
13135 			if (pe->data != NULL) {
13136 				const struct got_error *perr;
13137 
13138 				perr = pe->data;
13139 				error = got_error_fmt(perr->code, "%s",
13140 				    pe->path);
13141 				break;
13142 			}
13143 		}
13144 	}
13145 done:
13146 	if (worktree)
13147 		got_worktree_close(worktree);
13148 	TAILQ_FOREACH(pe, &paths, entry)
13149 		free((char *)pe->path);
13150 	got_pathlist_free(&paths);
13151 	free(cwd);
13152 	free(id_str);
13153 	free(uuidstr);
13154 	return error;
13155 }