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  * Copyright (C) 2023 Josh Rickmar <jrick@zettaport.com>
6  *
7  * Permission to use, copy, modify, and distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 #include <sys/queue.h>
21 #include <sys/time.h>
22 #include <sys/types.h>
23 #include <sys/stat.h>
24 #include <sys/wait.h>
25 
26 #include <err.h>
27 #include <errno.h>
28 #include <fcntl.h>
29 #include <limits.h>
30 #include <locale.h>
31 #include <ctype.h>
32 #include <sha1.h>
33 #include <sha2.h>
34 #include <signal.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39 #include <libgen.h>
40 #include <time.h>
41 #include <paths.h>
42 #include <regex.h>
43 #include <getopt.h>
44 #include <util.h>
45 
46 #include "got_version.h"
47 #include "got_error.h"
48 #include "got_object.h"
49 #include "got_reference.h"
50 #include "got_repository.h"
51 #include "got_path.h"
52 #include "got_cancel.h"
53 #include "got_worktree.h"
54 #include "got_worktree_cvg.h"
55 #include "got_diff.h"
56 #include "got_commit_graph.h"
57 #include "got_fetch.h"
58 #include "got_send.h"
59 #include "got_blame.h"
60 #include "got_privsep.h"
61 #include "got_opentemp.h"
62 #include "got_gotconfig.h"
63 #include "got_dial.h"
64 #include "got_patch.h"
65 #include "got_sigs.h"
66 #include "got_date.h"
67 
68 #ifndef nitems
69 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
70 #endif
71 
72 #ifndef GOT_DEFAULT_EDITOR
73 #define GOT_DEFAULT_EDITOR "/usr/bin/vi"
74 #endif
75 
76 static volatile sig_atomic_t sigint_received;
77 static volatile sig_atomic_t sigpipe_received;
78 
79 static void
80 catch_sigint(int signo)
81 {
82 	sigint_received = 1;
83 }
84 
85 static void
86 catch_sigpipe(int signo)
87 {
88 	sigpipe_received = 1;
89 }
90 
91 
92 struct got_cmd {
93 	const char	*cmd_name;
94 	const struct got_error *(*cmd_main)(int, char *[]);
95 	void		(*cmd_usage)(void);
96 	const char	*cmd_alias;
97 };
98 
99 __dead static void	usage(int, int);
100 __dead static void	usage_import(void);
101 __dead static void	usage_clone(void);
102 __dead static void	usage_checkout(void);
103 __dead static void	usage_update(void);
104 __dead static void	usage_log(void);
105 __dead static void	usage_diff(void);
106 __dead static void	usage_blame(void);
107 __dead static void	usage_tree(void);
108 __dead static void	usage_status(void);
109 __dead static void	usage_tag(void);
110 __dead static void	usage_add(void);
111 __dead static void	usage_remove(void);
112 __dead static void	usage_patch(void);
113 __dead static void	usage_revert(void);
114 __dead static void	usage_commit(void);
115 __dead static void	usage_cherrypick(void);
116 __dead static void	usage_backout(void);
117 __dead static void	usage_cat(void);
118 __dead static void	usage_info(void);
119 
120 static const struct got_error*		cmd_import(int, char *[]);
121 static const struct got_error*		cmd_clone(int, char *[]);
122 static const struct got_error*		cmd_checkout(int, char *[]);
123 static const struct got_error*		cmd_update(int, char *[]);
124 static const struct got_error*		cmd_log(int, char *[]);
125 static const struct got_error*		cmd_diff(int, char *[]);
126 static const struct got_error*		cmd_blame(int, char *[]);
127 static const struct got_error*		cmd_tree(int, char *[]);
128 static const struct got_error*		cmd_status(int, char *[]);
129 static const struct got_error*		cmd_tag(int, char *[]);
130 static const struct got_error*		cmd_add(int, char *[]);
131 static const struct got_error*		cmd_remove(int, char *[]);
132 static const struct got_error*		cmd_patch(int, char *[]);
133 static const struct got_error*		cmd_revert(int, char *[]);
134 static const struct got_error*		cmd_commit(int, char *[]);
135 static const struct got_error*		cmd_cherrypick(int, char *[]);
136 static const struct got_error*		cmd_backout(int, char *[]);
137 static const struct got_error*		cmd_cat(int, char *[]);
138 static const struct got_error*		cmd_info(int, char *[]);
139 
140 static const struct got_cmd got_commands[] = {
141 	{ "import",	cmd_import,	usage_import,	"im" },
142 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
143 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
144 	{ "update",	cmd_update,	usage_update,	"up" },
145 	{ "log",	cmd_log,	usage_log,	"" },
146 	{ "diff",	cmd_diff,	usage_diff,	"di" },
147 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
148 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
149 	{ "status",	cmd_status,	usage_status,	"st" },
150 	{ "tag",	cmd_tag,	usage_tag,	"" },
151 	{ "add",	cmd_add,	usage_add,	"" },
152 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
153 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
154 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
155 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
156 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
157 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
158 	{ "cat",	cmd_cat,	usage_cat,	"" },
159 	{ "info",	cmd_info,	usage_info,	"" },
160 };
161 
162 static void
163 list_commands(FILE *fp)
164 {
165 	size_t i;
166 
167 	fprintf(fp, "commands:");
168 	for (i = 0; i < nitems(got_commands); i++) {
169 		const struct got_cmd *cmd = &got_commands[i];
170 		fprintf(fp, " %s", cmd->cmd_name);
171 	}
172 	fputc('\n', fp);
173 }
174 
175 __dead static void
176 option_conflict(char a, char b)
177 {
178 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
179 }
180 
181 int
182 main(int argc, char *argv[])
183 {
184 	const struct got_cmd *cmd;
185 	size_t i;
186 	int ch;
187 	int hflag = 0, Vflag = 0;
188 	static const struct option longopts[] = {
189 	    { "version", no_argument, NULL, 'V' },
190 	    { NULL, 0, NULL, 0 }
191 	};
192 
193 	setlocale(LC_CTYPE, "");
194 
195 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
196 		switch (ch) {
197 		case 'h':
198 			hflag = 1;
199 			break;
200 		case 'V':
201 			Vflag = 1;
202 			break;
203 		default:
204 			usage(hflag, 1);
205 			/* NOTREACHED */
206 		}
207 	}
208 
209 	argc -= optind;
210 	argv += optind;
211 	optind = 1;
212 	optreset = 1;
213 
214 	if (Vflag) {
215 		got_version_print_str();
216 		return 0;
217 	}
218 
219 	if (argc <= 0)
220 		usage(hflag, hflag ? 0 : 1);
221 
222 	signal(SIGINT, catch_sigint);
223 	signal(SIGPIPE, catch_sigpipe);
224 
225 	for (i = 0; i < nitems(got_commands); i++) {
226 		const struct got_error *error;
227 
228 		cmd = &got_commands[i];
229 
230 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
231 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
232 			continue;
233 
234 		if (hflag)
235 			cmd->cmd_usage();
236 
237 		error = cmd->cmd_main(argc, argv);
238 		if (error && error->code != GOT_ERR_CANCELLED &&
239 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
240 		    !(sigpipe_received &&
241 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
242 		    !(sigint_received &&
243 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
244 			fflush(stdout);
245 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
246 			return 1;
247 		}
248 
249 		return 0;
250 	}
251 
252 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
253 	list_commands(stderr);
254 	return 1;
255 }
256 
257 __dead static void
258 usage(int hflag, int status)
259 {
260 	FILE *fp = (status == 0) ? stdout : stderr;
261 
262 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
263 	    getprogname());
264 	if (hflag)
265 		list_commands(fp);
266 	exit(status);
267 }
268 
269 static const struct got_error *
270 get_editor(char **abspath)
271 {
272 	const struct got_error *err = NULL;
273 	const char *editor;
274 
275 	*abspath = NULL;
276 
277 	editor = getenv("VISUAL");
278 	if (editor == NULL)
279 		editor = getenv("EDITOR");
280 
281 	if (editor) {
282 		err = got_path_find_prog(abspath, editor);
283 		if (err)
284 			return err;
285 	}
286 
287 	if (*abspath == NULL) {
288 		*abspath = strdup(GOT_DEFAULT_EDITOR);
289 		if (*abspath == NULL)
290 			return got_error_from_errno("strdup");
291 	}
292 
293 	return NULL;
294 }
295 
296 static const struct got_error *
297 apply_unveil(const char *repo_path, int repo_read_only,
298     const char *worktree_path)
299 {
300 	const struct got_error *err;
301 
302 #ifdef PROFILE
303 	if (unveil("gmon.out", "rwc") != 0)
304 		return got_error_from_errno2("unveil", "gmon.out");
305 #endif
306 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
307 		return got_error_from_errno2("unveil", repo_path);
308 
309 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
310 		return got_error_from_errno2("unveil", worktree_path);
311 
312 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
313 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
314 
315 	err = got_privsep_unveil_exec_helpers();
316 	if (err != NULL)
317 		return err;
318 
319 	if (unveil(NULL, NULL) != 0)
320 		return got_error_from_errno("unveil");
321 
322 	return NULL;
323 }
324 
325 __dead static void
326 usage_import(void)
327 {
328 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
329 	    "[-r repository-path] directory\n", getprogname());
330 	exit(1);
331 }
332 
333 static int
334 spawn_editor(const char *editor, const char *file)
335 {
336 	pid_t pid;
337 	sig_t sighup, sigint, sigquit;
338 	int st = -1;
339 
340 	sighup = signal(SIGHUP, SIG_IGN);
341 	sigint = signal(SIGINT, SIG_IGN);
342 	sigquit = signal(SIGQUIT, SIG_IGN);
343 
344 	switch (pid = fork()) {
345 	case -1:
346 		goto doneediting;
347 	case 0:
348 		execl(editor, editor, file, (char *)NULL);
349 		_exit(127);
350 	}
351 
352 	while (waitpid(pid, &st, 0) == -1)
353 		if (errno != EINTR)
354 			break;
355 
356 doneediting:
357 	(void)signal(SIGHUP, sighup);
358 	(void)signal(SIGINT, sigint);
359 	(void)signal(SIGQUIT, sigquit);
360 
361 	if (!WIFEXITED(st)) {
362 		errno = EINTR;
363 		return -1;
364 	}
365 
366 	return WEXITSTATUS(st);
367 }
368 
369 static const struct got_error *
370 read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
371 {
372 	const struct got_error *err = NULL;
373 	char *line = NULL;
374 	size_t linesize = 0;
375 
376 	*logmsg = NULL;
377 	*len = 0;
378 
379 	if (fseeko(fp, 0L, SEEK_SET) == -1)
380 		return got_error_from_errno("fseeko");
381 
382 	*logmsg = malloc(filesize + 1);
383 	if (*logmsg == NULL)
384 		return got_error_from_errno("malloc");
385 	(*logmsg)[0] = '\0';
386 
387 	while (getline(&line, &linesize, fp) != -1) {
388 		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
389 			continue; /* remove comments and leading empty lines */
390 		*len = strlcat(*logmsg, line, filesize + 1);
391 		if (*len >= filesize + 1) {
392 			err = got_error(GOT_ERR_NO_SPACE);
393 			goto done;
394 		}
395 	}
396 	if (ferror(fp)) {
397 		err = got_ferror(fp, GOT_ERR_IO);
398 		goto done;
399 	}
400 
401 	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
402 		(*logmsg)[*len - 1] = '\0';
403 		(*len)--;
404 	}
405 done:
406 	free(line);
407 	if (err) {
408 		free(*logmsg);
409 		*logmsg = NULL;
410 		*len = 0;
411 	}
412 	return err;
413 }
414 
415 static const struct got_error *
416 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
417     const char *initial_content, size_t initial_content_len,
418     int require_modification)
419 {
420 	const struct got_error *err = NULL;
421 	struct stat st, st2;
422 	FILE *fp = NULL;
423 	size_t logmsg_len;
424 
425 	*logmsg = NULL;
426 
427 	if (stat(logmsg_path, &st) == -1)
428 		return got_error_from_errno2("stat", logmsg_path);
429 
430 	if (spawn_editor(editor, logmsg_path) == -1)
431 		return got_error_from_errno("failed spawning editor");
432 
433 	if (require_modification) {
434 		struct timespec timeout;
435 
436 		timeout.tv_sec = 0;
437 		timeout.tv_nsec = 1;
438 		nanosleep(&timeout,  NULL);
439 	}
440 
441 	if (stat(logmsg_path, &st2) == -1)
442 		return got_error_from_errno2("stat", logmsg_path);
443 
444 	if (require_modification && st.st_size == st2.st_size &&
445 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
446 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
447 		    "no changes made to commit message, aborting");
448 
449 	fp = fopen(logmsg_path, "re");
450 	if (fp == NULL) {
451 		err = got_error_from_errno("fopen");
452 		goto done;
453 	}
454 
455 	/* strip comments and leading/trailing newlines */
456 	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
457 	if (err)
458 		goto done;
459 	if (logmsg_len == 0) {
460 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
461 		    "commit message cannot be empty, aborting");
462 		goto done;
463 	}
464 done:
465 	if (fp && fclose(fp) == EOF && err == NULL)
466 		err = got_error_from_errno("fclose");
467 	if (err) {
468 		free(*logmsg);
469 		*logmsg = NULL;
470 	}
471 	return err;
472 }
473 
474 static const struct got_error *
475 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
476     const char *path_dir, const char *branch_name)
477 {
478 	char *initial_content = NULL;
479 	const struct got_error *err = NULL;
480 	int initial_content_len;
481 	int fd = -1;
482 
483 	initial_content_len = asprintf(&initial_content,
484 	    "\n# %s to be imported to branch %s\n", path_dir,
485 	    branch_name);
486 	if (initial_content_len == -1)
487 		return got_error_from_errno("asprintf");
488 
489 	err = got_opentemp_named_fd(logmsg_path, &fd,
490 	    GOT_TMPDIR_STR "/got-importmsg", "");
491 	if (err)
492 		goto done;
493 
494 	if (write(fd, initial_content, initial_content_len) == -1) {
495 		err = got_error_from_errno2("write", *logmsg_path);
496 		goto done;
497 	}
498 	if (close(fd) == -1) {
499 		err = got_error_from_errno2("close", *logmsg_path);
500 		goto done;
501 	}
502 	fd = -1;
503 
504 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
505 	    initial_content_len, 1);
506 done:
507 	if (fd != -1 && close(fd) == -1 && err == NULL)
508 		err = got_error_from_errno2("close", *logmsg_path);
509 	free(initial_content);
510 	if (err) {
511 		free(*logmsg_path);
512 		*logmsg_path = NULL;
513 	}
514 	return err;
515 }
516 
517 static const struct got_error *
518 import_progress(void *arg, const char *path)
519 {
520 	printf("A  %s\n", path);
521 	return NULL;
522 }
523 
524 static const struct got_error *
525 valid_author(const char *author)
526 {
527 	const char *email = author;
528 
529 	/*
530 	 * Git' expects the author (or committer) to be in the form
531 	 * "name <email>", which are mostly free form (see the
532 	 * "committer" description in git-fast-import(1)).  We're only
533 	 * doing this to avoid git's object parser breaking on commits
534 	 * we create.
535 	 */
536 
537 	while (*author && *author != '\n' && *author != '<' && *author != '>')
538 		author++;
539 	if (author != email && *author == '<' && *(author - 1) != ' ')
540 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
541 		    "between author name and email required", email);
542 	if (*author++ != '<')
543 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
544 	while (*author && *author != '\n' && *author != '<' && *author != '>')
545 		author++;
546 	if (strcmp(author, ">") != 0)
547 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
548 	return NULL;
549 }
550 
551 static const struct got_error *
552 get_author(char **author, struct got_repository *repo,
553     struct got_worktree *worktree)
554 {
555 	const struct got_error *err = NULL;
556 	const char *got_author = NULL, *name, *email;
557 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
558 
559 	*author = NULL;
560 
561 	if (worktree)
562 		worktree_conf = got_worktree_get_gotconfig(worktree);
563 	repo_conf = got_repo_get_gotconfig(repo);
564 
565 	/*
566 	 * Priority of potential author information sources, from most
567 	 * significant to least significant:
568 	 * 1) work tree's .got/got.conf file
569 	 * 2) repository's got.conf file
570 	 * 3) repository's git config file
571 	 * 4) environment variables
572 	 * 5) global git config files (in user's home directory or /etc)
573 	 */
574 
575 	if (worktree_conf)
576 		got_author = got_gotconfig_get_author(worktree_conf);
577 	if (got_author == NULL)
578 		got_author = got_gotconfig_get_author(repo_conf);
579 	if (got_author == NULL) {
580 		name = got_repo_get_gitconfig_author_name(repo);
581 		email = got_repo_get_gitconfig_author_email(repo);
582 		if (name && email) {
583 			if (asprintf(author, "%s <%s>", name, email) == -1)
584 				return got_error_from_errno("asprintf");
585 			return NULL;
586 		}
587 
588 		got_author = getenv("GOT_AUTHOR");
589 		if (got_author == NULL) {
590 			name = got_repo_get_global_gitconfig_author_name(repo);
591 			email = got_repo_get_global_gitconfig_author_email(
592 			    repo);
593 			if (name && email) {
594 				if (asprintf(author, "%s <%s>", name, email)
595 				    == -1)
596 					return got_error_from_errno("asprintf");
597 				return NULL;
598 			}
599 			/* TODO: Look up user in password database? */
600 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
601 		}
602 	}
603 
604 	*author = strdup(got_author);
605 	if (*author == NULL)
606 		return got_error_from_errno("strdup");
607 
608 	err = valid_author(*author);
609 	if (err) {
610 		free(*author);
611 		*author = NULL;
612 	}
613 	return err;
614 }
615 
616 static const struct got_error *
617 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
618     struct got_worktree *worktree)
619 {
620 	const char *got_allowed_signers = NULL;
621 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
622 
623 	*allowed_signers = NULL;
624 
625 	if (worktree)
626 		worktree_conf = got_worktree_get_gotconfig(worktree);
627 	repo_conf = got_repo_get_gotconfig(repo);
628 
629 	/*
630 	 * Priority of potential author information sources, from most
631 	 * significant to least significant:
632 	 * 1) work tree's .got/got.conf file
633 	 * 2) repository's got.conf file
634 	 */
635 
636 	if (worktree_conf)
637 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
638 		    worktree_conf);
639 	if (got_allowed_signers == NULL)
640 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
641 		    repo_conf);
642 
643 	if (got_allowed_signers) {
644 		*allowed_signers = strdup(got_allowed_signers);
645 		if (*allowed_signers == NULL)
646 			return got_error_from_errno("strdup");
647 	}
648 	return NULL;
649 }
650 
651 static const struct got_error *
652 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
653     struct got_worktree *worktree)
654 {
655 	const char *got_revoked_signers = NULL;
656 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
657 
658 	*revoked_signers = NULL;
659 
660 	if (worktree)
661 		worktree_conf = got_worktree_get_gotconfig(worktree);
662 	repo_conf = got_repo_get_gotconfig(repo);
663 
664 	/*
665 	 * Priority of potential author information sources, from most
666 	 * significant to least significant:
667 	 * 1) work tree's .got/got.conf file
668 	 * 2) repository's got.conf file
669 	 */
670 
671 	if (worktree_conf)
672 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
673 		    worktree_conf);
674 	if (got_revoked_signers == NULL)
675 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
676 		    repo_conf);
677 
678 	if (got_revoked_signers) {
679 		*revoked_signers = strdup(got_revoked_signers);
680 		if (*revoked_signers == NULL)
681 			return got_error_from_errno("strdup");
682 	}
683 	return NULL;
684 }
685 
686 static const char *
687 get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
688 {
689 	const char *got_signer_id = NULL;
690 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
691 
692 	if (worktree)
693 		worktree_conf = got_worktree_get_gotconfig(worktree);
694 	repo_conf = got_repo_get_gotconfig(repo);
695 
696 	/*
697 	 * Priority of potential author information sources, from most
698 	 * significant to least significant:
699 	 * 1) work tree's .got/got.conf file
700 	 * 2) repository's got.conf file
701 	 */
702 
703 	if (worktree_conf)
704 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
705 	if (got_signer_id == NULL)
706 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
707 
708 	return got_signer_id;
709 }
710 
711 static const struct got_error *
712 get_gitconfig_path(char **gitconfig_path)
713 {
714 	const char *homedir = getenv("HOME");
715 
716 	*gitconfig_path = NULL;
717 	if (homedir) {
718 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
719 			return got_error_from_errno("asprintf");
720 
721 	}
722 	return NULL;
723 }
724 
725 static const struct got_error *
726 cmd_import(int argc, char *argv[])
727 {
728 	const struct got_error *error = NULL;
729 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
730 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
731 	const char *branch_name = NULL;
732 	char *id_str = NULL, *logmsg_path = NULL;
733 	char refname[PATH_MAX] = "refs/heads/";
734 	struct got_repository *repo = NULL;
735 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
736 	struct got_object_id *new_commit_id = NULL;
737 	int ch, n = 0;
738 	struct got_pathlist_head ignores;
739 	struct got_pathlist_entry *pe;
740 	int preserve_logmsg = 0;
741 	int *pack_fds = NULL;
742 
743 	TAILQ_INIT(&ignores);
744 
745 #ifndef PROFILE
746 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
747 	    "unveil",
748 	    NULL) == -1)
749 		err(1, "pledge");
750 #endif
751 
752 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
753 		switch (ch) {
754 		case 'b':
755 			branch_name = optarg;
756 			break;
757 		case 'I':
758 			if (optarg[0] == '\0')
759 				break;
760 			error = got_pathlist_insert(&pe, &ignores, optarg,
761 			    NULL);
762 			if (error)
763 				goto done;
764 			break;
765 		case 'm':
766 			logmsg = strdup(optarg);
767 			if (logmsg == NULL) {
768 				error = got_error_from_errno("strdup");
769 				goto done;
770 			}
771 			break;
772 		case 'r':
773 			repo_path = realpath(optarg, NULL);
774 			if (repo_path == NULL) {
775 				error = got_error_from_errno2("realpath",
776 				    optarg);
777 				goto done;
778 			}
779 			break;
780 		default:
781 			usage_import();
782 			/* NOTREACHED */
783 		}
784 	}
785 
786 	argc -= optind;
787 	argv += optind;
788 
789 	if (argc != 1)
790 		usage_import();
791 
792 	if (repo_path == NULL) {
793 		repo_path = getcwd(NULL, 0);
794 		if (repo_path == NULL)
795 			return got_error_from_errno("getcwd");
796 	}
797 	got_path_strip_trailing_slashes(repo_path);
798 	error = get_gitconfig_path(&gitconfig_path);
799 	if (error)
800 		goto done;
801 	error = got_repo_pack_fds_open(&pack_fds);
802 	if (error != NULL)
803 		goto done;
804 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
805 	if (error)
806 		goto done;
807 
808 	error = get_author(&author, repo, NULL);
809 	if (error)
810 		return error;
811 
812 	/*
813 	 * Don't let the user create a branch name with a leading '-'.
814 	 * While technically a valid reference name, this case is usually
815 	 * an unintended typo.
816 	 */
817 	if (branch_name && branch_name[0] == '-')
818 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
819 
820 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
821 	if (error && error->code != GOT_ERR_NOT_REF)
822 		goto done;
823 
824 	if (branch_name)
825 		n = strlcat(refname, branch_name, sizeof(refname));
826 	else if (head_ref && got_ref_is_symbolic(head_ref))
827 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
828 		    sizeof(refname));
829 	else
830 		n = strlcat(refname, "main", sizeof(refname));
831 	if (n >= sizeof(refname)) {
832 		error = got_error(GOT_ERR_NO_SPACE);
833 		goto done;
834 	}
835 
836 	error = got_ref_open(&branch_ref, repo, refname, 0);
837 	if (error) {
838 		if (error->code != GOT_ERR_NOT_REF)
839 			goto done;
840 	} else {
841 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
842 		    "import target branch already exists");
843 		goto done;
844 	}
845 
846 	path_dir = realpath(argv[0], NULL);
847 	if (path_dir == NULL) {
848 		error = got_error_from_errno2("realpath", argv[0]);
849 		goto done;
850 	}
851 	got_path_strip_trailing_slashes(path_dir);
852 
853 	/*
854 	 * unveil(2) traverses exec(2); if an editor is used we have
855 	 * to apply unveil after the log message has been written.
856 	 */
857 	if (logmsg == NULL || *logmsg == '\0') {
858 		error = get_editor(&editor);
859 		if (error)
860 			goto done;
861 		free(logmsg);
862 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
863 		    path_dir, refname);
864 		if (error) {
865 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
866 			    logmsg_path != NULL)
867 				preserve_logmsg = 1;
868 			goto done;
869 		}
870 	}
871 
872 	if (unveil(path_dir, "r") != 0) {
873 		error = got_error_from_errno2("unveil", path_dir);
874 		if (logmsg_path)
875 			preserve_logmsg = 1;
876 		goto done;
877 	}
878 
879 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
880 	if (error) {
881 		if (logmsg_path)
882 			preserve_logmsg = 1;
883 		goto done;
884 	}
885 
886 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
887 	    author, &ignores, repo, import_progress, NULL);
888 	if (error) {
889 		if (logmsg_path)
890 			preserve_logmsg = 1;
891 		goto done;
892 	}
893 
894 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
895 	if (error) {
896 		if (logmsg_path)
897 			preserve_logmsg = 1;
898 		goto done;
899 	}
900 
901 	error = got_ref_write(branch_ref, repo);
902 	if (error) {
903 		if (logmsg_path)
904 			preserve_logmsg = 1;
905 		goto done;
906 	}
907 
908 	error = got_object_id_str(&id_str, new_commit_id);
909 	if (error) {
910 		if (logmsg_path)
911 			preserve_logmsg = 1;
912 		goto done;
913 	}
914 
915 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
916 	if (error) {
917 		if (error->code != GOT_ERR_NOT_REF) {
918 			if (logmsg_path)
919 				preserve_logmsg = 1;
920 			goto done;
921 		}
922 
923 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
924 		    branch_ref);
925 		if (error) {
926 			if (logmsg_path)
927 				preserve_logmsg = 1;
928 			goto done;
929 		}
930 
931 		error = got_ref_write(head_ref, repo);
932 		if (error) {
933 			if (logmsg_path)
934 				preserve_logmsg = 1;
935 			goto done;
936 		}
937 	}
938 
939 	printf("Created branch %s with commit %s\n",
940 	    got_ref_get_name(branch_ref), id_str);
941 done:
942 	if (pack_fds) {
943 		const struct got_error *pack_err =
944 		    got_repo_pack_fds_close(pack_fds);
945 		if (error == NULL)
946 			error = pack_err;
947 	}
948 	if (repo) {
949 		const struct got_error *close_err = got_repo_close(repo);
950 		if (error == NULL)
951 			error = close_err;
952 	}
953 	if (preserve_logmsg) {
954 		fprintf(stderr, "%s: log message preserved in %s\n",
955 		    getprogname(), logmsg_path);
956 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
957 		error = got_error_from_errno2("unlink", logmsg_path);
958 	free(logmsg);
959 	free(logmsg_path);
960 	free(repo_path);
961 	free(editor);
962 	free(new_commit_id);
963 	free(id_str);
964 	free(author);
965 	free(gitconfig_path);
966 	if (branch_ref)
967 		got_ref_close(branch_ref);
968 	if (head_ref)
969 		got_ref_close(head_ref);
970 	return error;
971 }
972 
973 __dead static void
974 usage_clone(void)
975 {
976 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
977 	    "repository-URL [directory]\n", getprogname());
978 	exit(1);
979 }
980 
981 struct got_fetch_progress_arg {
982 	char last_scaled_size[FMT_SCALED_STRSIZE];
983 	int last_p_indexed;
984 	int last_p_resolved;
985 	int verbosity;
986 
987 	struct got_repository *repo;
988 
989 	int create_configs;
990 	int configs_created;
991 	struct {
992 		struct got_pathlist_head *symrefs;
993 		struct got_pathlist_head *wanted_branches;
994 		struct got_pathlist_head *wanted_refs;
995 		const char *proto;
996 		const char *host;
997 		const char *port;
998 		const char *remote_repo_path;
999 		const char *git_url;
1000 		int fetch_all_branches;
1001 		int mirror_references;
1002 	} config_info;
1003 };
1004 
1005 /* XXX forward declaration */
1006 static const struct got_error *
1007 create_config_files(const char *proto, const char *host, const char *port,
1008     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1009     int mirror_references, struct got_pathlist_head *symrefs,
1010     struct got_pathlist_head *wanted_branches,
1011     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1012 
1013 static const struct got_error *
1014 fetch_progress(void *arg, const char *message, off_t packfile_size,
1015     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1016 {
1017 	const struct got_error *err = NULL;
1018 	struct got_fetch_progress_arg *a = arg;
1019 	char scaled_size[FMT_SCALED_STRSIZE];
1020 	int p_indexed, p_resolved;
1021 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1022 
1023 	/*
1024 	 * In order to allow a failed clone to be resumed with 'got fetch'
1025 	 * we try to create configuration files as soon as possible.
1026 	 * Once the server has sent information about its default branch
1027 	 * we have all required information.
1028 	 */
1029 	if (a->create_configs && !a->configs_created &&
1030 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1031 		err = create_config_files(a->config_info.proto,
1032 		    a->config_info.host, a->config_info.port,
1033 		    a->config_info.remote_repo_path,
1034 		    a->config_info.git_url,
1035 		    a->config_info.fetch_all_branches,
1036 		    a->config_info.mirror_references,
1037 		    a->config_info.symrefs,
1038 		    a->config_info.wanted_branches,
1039 		    a->config_info.wanted_refs, a->repo);
1040 		if (err)
1041 			return err;
1042 		a->configs_created = 1;
1043 	}
1044 
1045 	if (a->verbosity < 0)
1046 		return NULL;
1047 
1048 	if (message && message[0] != '\0') {
1049 		printf("\rserver: %s", message);
1050 		fflush(stdout);
1051 		return NULL;
1052 	}
1053 
1054 	if (packfile_size > 0 || nobj_indexed > 0) {
1055 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1056 		    (a->last_scaled_size[0] == '\0' ||
1057 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1058 			print_size = 1;
1059 			if (strlcpy(a->last_scaled_size, scaled_size,
1060 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1061 				return got_error(GOT_ERR_NO_SPACE);
1062 		}
1063 		if (nobj_indexed > 0) {
1064 			p_indexed = (nobj_indexed * 100) / nobj_total;
1065 			if (p_indexed != a->last_p_indexed) {
1066 				a->last_p_indexed = p_indexed;
1067 				print_indexed = 1;
1068 				print_size = 1;
1069 			}
1070 		}
1071 		if (nobj_resolved > 0) {
1072 			p_resolved = (nobj_resolved * 100) /
1073 			    (nobj_total - nobj_loose);
1074 			if (p_resolved != a->last_p_resolved) {
1075 				a->last_p_resolved = p_resolved;
1076 				print_resolved = 1;
1077 				print_indexed = 1;
1078 				print_size = 1;
1079 			}
1080 		}
1081 
1082 	}
1083 	if (print_size || print_indexed || print_resolved)
1084 		printf("\r");
1085 	if (print_size)
1086 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1087 	if (print_indexed)
1088 		printf("; indexing %d%%", p_indexed);
1089 	if (print_resolved)
1090 		printf("; resolving deltas %d%%", p_resolved);
1091 	if (print_size || print_indexed || print_resolved)
1092 		fflush(stdout);
1093 
1094 	return NULL;
1095 }
1096 
1097 static const struct got_error *
1098 create_symref(const char *refname, struct got_reference *target_ref,
1099     int verbosity, struct got_repository *repo)
1100 {
1101 	const struct got_error *err;
1102 	struct got_reference *head_symref;
1103 
1104 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1105 	if (err)
1106 		return err;
1107 
1108 	err = got_ref_write(head_symref, repo);
1109 	if (err == NULL && verbosity > 0) {
1110 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1111 		    got_ref_get_name(target_ref));
1112 	}
1113 	got_ref_close(head_symref);
1114 	return err;
1115 }
1116 
1117 static const struct got_error *
1118 list_remote_refs(struct got_pathlist_head *symrefs,
1119     struct got_pathlist_head *refs)
1120 {
1121 	const struct got_error *err;
1122 	struct got_pathlist_entry *pe;
1123 
1124 	TAILQ_FOREACH(pe, symrefs, entry) {
1125 		const char *refname = pe->path;
1126 		const char *targetref = pe->data;
1127 
1128 		printf("%s: %s\n", refname, targetref);
1129 	}
1130 
1131 	TAILQ_FOREACH(pe, refs, entry) {
1132 		const char *refname = pe->path;
1133 		struct got_object_id *id = pe->data;
1134 		char *id_str;
1135 
1136 		err = got_object_id_str(&id_str, id);
1137 		if (err)
1138 			return err;
1139 		printf("%s: %s\n", refname, id_str);
1140 		free(id_str);
1141 	}
1142 
1143 	return NULL;
1144 }
1145 
1146 static const struct got_error *
1147 create_ref(const char *refname, struct got_object_id *id,
1148     int verbosity, struct got_repository *repo)
1149 {
1150 	const struct got_error *err = NULL;
1151 	struct got_reference *ref;
1152 	char *id_str;
1153 
1154 	err = got_object_id_str(&id_str, id);
1155 	if (err)
1156 		return err;
1157 
1158 	err = got_ref_alloc(&ref, refname, id);
1159 	if (err)
1160 		goto done;
1161 
1162 	err = got_ref_write(ref, repo);
1163 	got_ref_close(ref);
1164 
1165 	if (err == NULL && verbosity >= 0)
1166 		printf("Created reference %s: %s\n", refname, id_str);
1167 done:
1168 	free(id_str);
1169 	return err;
1170 }
1171 
1172 static int
1173 match_wanted_ref(const char *refname, const char *wanted_ref)
1174 {
1175 	if (strncmp(refname, "refs/", 5) != 0)
1176 		return 0;
1177 	refname += 5;
1178 
1179 	/*
1180 	 * Prevent fetching of references that won't make any
1181 	 * sense outside of the remote repository's context.
1182 	 */
1183 	if (strncmp(refname, "got/", 4) == 0)
1184 		return 0;
1185 	if (strncmp(refname, "remotes/", 8) == 0)
1186 		return 0;
1187 
1188 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1189 		wanted_ref += 5;
1190 
1191 	/* Allow prefix match. */
1192 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1193 		return 1;
1194 
1195 	/* Allow exact match. */
1196 	return (strcmp(refname, wanted_ref) == 0);
1197 }
1198 
1199 static int
1200 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1201 {
1202 	struct got_pathlist_entry *pe;
1203 
1204 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1205 		if (match_wanted_ref(refname, pe->path))
1206 			return 1;
1207 	}
1208 
1209 	return 0;
1210 }
1211 
1212 static const struct got_error *
1213 create_wanted_ref(const char *refname, struct got_object_id *id,
1214     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1215 {
1216 	const struct got_error *err;
1217 	char *remote_refname;
1218 
1219 	if (strncmp("refs/", refname, 5) == 0)
1220 		refname += 5;
1221 
1222 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1223 	    remote_repo_name, refname) == -1)
1224 		return got_error_from_errno("asprintf");
1225 
1226 	err = create_ref(remote_refname, id, verbosity, repo);
1227 	free(remote_refname);
1228 	return err;
1229 }
1230 
1231 static const struct got_error *
1232 create_gotconfig(const char *proto, const char *host, const char *port,
1233     const char *remote_repo_path, const char *default_branch,
1234     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1235     struct got_pathlist_head *wanted_refs, int mirror_references,
1236     struct got_repository *repo)
1237 {
1238 	const struct got_error *err = NULL;
1239 	char *gotconfig_path = NULL;
1240 	char *gotconfig = NULL;
1241 	FILE *gotconfig_file = NULL;
1242 	const char *branchname = NULL;
1243 	char *branches = NULL, *refs = NULL;
1244 	ssize_t n;
1245 
1246 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1247 		struct got_pathlist_entry *pe;
1248 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1249 			char *s;
1250 			branchname = pe->path;
1251 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1252 				branchname += 11;
1253 			if (asprintf(&s, "%s\"%s\" ",
1254 			    branches ? branches : "", branchname) == -1) {
1255 				err = got_error_from_errno("asprintf");
1256 				goto done;
1257 			}
1258 			free(branches);
1259 			branches = s;
1260 		}
1261 	} else if (!fetch_all_branches && default_branch) {
1262 		branchname = default_branch;
1263 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1264 			branchname += 11;
1265 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1266 			err = got_error_from_errno("asprintf");
1267 			goto done;
1268 		}
1269 	}
1270 	if (!TAILQ_EMPTY(wanted_refs)) {
1271 		struct got_pathlist_entry *pe;
1272 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1273 			char *s;
1274 			const char *refname = pe->path;
1275 			if (strncmp(refname, "refs/", 5) == 0)
1276 				branchname += 5;
1277 			if (asprintf(&s, "%s\"%s\" ",
1278 			    refs ? refs : "", refname) == -1) {
1279 				err = got_error_from_errno("asprintf");
1280 				goto done;
1281 			}
1282 			free(refs);
1283 			refs = s;
1284 		}
1285 	}
1286 
1287 	/* Create got.conf(5). */
1288 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1289 	if (gotconfig_path == NULL) {
1290 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1291 		goto done;
1292 	}
1293 	gotconfig_file = fopen(gotconfig_path, "ae");
1294 	if (gotconfig_file == NULL) {
1295 		err = got_error_from_errno2("fopen", gotconfig_path);
1296 		goto done;
1297 	}
1298 	if (asprintf(&gotconfig,
1299 	    "remote \"%s\" {\n"
1300 	    "\tserver %s\n"
1301 	    "\tprotocol %s\n"
1302 	    "%s%s%s"
1303 	    "\trepository \"%s\"\n"
1304 	    "%s%s%s"
1305 	    "%s%s%s"
1306 	    "%s"
1307 	    "%s"
1308 	    "}\n",
1309 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1310 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1311 	    remote_repo_path, branches ? "\tbranch { " : "",
1312 	    branches ? branches : "", branches ? "}\n" : "",
1313 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1314 	    mirror_references ? "\tmirror_references yes\n" : "",
1315 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1316 		err = got_error_from_errno("asprintf");
1317 		goto done;
1318 	}
1319 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1320 	if (n != strlen(gotconfig)) {
1321 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1322 		goto done;
1323 	}
1324 
1325 done:
1326 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1327 		err = got_error_from_errno2("fclose", gotconfig_path);
1328 	free(gotconfig_path);
1329 	free(branches);
1330 	return err;
1331 }
1332 
1333 static const struct got_error *
1334 create_gitconfig(const char *git_url, const char *default_branch,
1335     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1336     struct got_pathlist_head *wanted_refs, int mirror_references,
1337     struct got_repository *repo)
1338 {
1339 	const struct got_error *err = NULL;
1340 	char *gitconfig_path = NULL;
1341 	char *gitconfig = NULL;
1342 	FILE *gitconfig_file = NULL;
1343 	char *branches = NULL, *refs = NULL;
1344 	const char *branchname;
1345 	ssize_t n;
1346 
1347 	/* Create a config file Git can understand. */
1348 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1349 	if (gitconfig_path == NULL) {
1350 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1351 		goto done;
1352 	}
1353 	gitconfig_file = fopen(gitconfig_path, "ae");
1354 	if (gitconfig_file == NULL) {
1355 		err = got_error_from_errno2("fopen", gitconfig_path);
1356 		goto done;
1357 	}
1358 	if (fetch_all_branches) {
1359 		if (mirror_references) {
1360 			if (asprintf(&branches,
1361 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1362 				err = got_error_from_errno("asprintf");
1363 				goto done;
1364 			}
1365 		} else if (asprintf(&branches,
1366 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1367 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1368 			err = got_error_from_errno("asprintf");
1369 			goto done;
1370 		}
1371 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1372 		struct got_pathlist_entry *pe;
1373 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1374 			char *s;
1375 			branchname = pe->path;
1376 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1377 				branchname += 11;
1378 			if (mirror_references) {
1379 				if (asprintf(&s,
1380 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1381 				    branches ? branches : "",
1382 				    branchname, branchname) == -1) {
1383 					err = got_error_from_errno("asprintf");
1384 					goto done;
1385 				}
1386 			} else if (asprintf(&s,
1387 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1388 			    branches ? branches : "",
1389 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1390 			    branchname) == -1) {
1391 				err = got_error_from_errno("asprintf");
1392 				goto done;
1393 			}
1394 			free(branches);
1395 			branches = s;
1396 		}
1397 	} else {
1398 		/*
1399 		 * If the server specified a default branch, use just that one.
1400 		 * Otherwise fall back to fetching all branches on next fetch.
1401 		 */
1402 		if (default_branch) {
1403 			branchname = default_branch;
1404 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1405 				branchname += 11;
1406 		} else
1407 			branchname = "*"; /* fall back to all branches */
1408 		if (mirror_references) {
1409 			if (asprintf(&branches,
1410 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1411 			    branchname, branchname) == -1) {
1412 				err = got_error_from_errno("asprintf");
1413 				goto done;
1414 			}
1415 		} else if (asprintf(&branches,
1416 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1417 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1418 		    branchname) == -1) {
1419 			err = got_error_from_errno("asprintf");
1420 			goto done;
1421 		}
1422 	}
1423 	if (!TAILQ_EMPTY(wanted_refs)) {
1424 		struct got_pathlist_entry *pe;
1425 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1426 			char *s;
1427 			const char *refname = pe->path;
1428 			if (strncmp(refname, "refs/", 5) == 0)
1429 				refname += 5;
1430 			if (mirror_references) {
1431 				if (asprintf(&s,
1432 				    "%s\tfetch = refs/%s:refs/%s\n",
1433 				    refs ? refs : "", refname, refname) == -1) {
1434 					err = got_error_from_errno("asprintf");
1435 					goto done;
1436 				}
1437 			} else if (asprintf(&s,
1438 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1439 			    refs ? refs : "",
1440 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1441 			    refname) == -1) {
1442 				err = got_error_from_errno("asprintf");
1443 				goto done;
1444 			}
1445 			free(refs);
1446 			refs = s;
1447 		}
1448 	}
1449 
1450 	if (asprintf(&gitconfig,
1451 	    "[remote \"%s\"]\n"
1452 	    "\turl = %s\n"
1453 	    "%s"
1454 	    "%s"
1455 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1456 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1457 	    refs ? refs : "") == -1) {
1458 		err = got_error_from_errno("asprintf");
1459 		goto done;
1460 	}
1461 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1462 	if (n != strlen(gitconfig)) {
1463 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1464 		goto done;
1465 	}
1466 done:
1467 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1468 		err = got_error_from_errno2("fclose", gitconfig_path);
1469 	free(gitconfig_path);
1470 	free(branches);
1471 	return err;
1472 }
1473 
1474 static const struct got_error *
1475 create_config_files(const char *proto, const char *host, const char *port,
1476     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1477     int mirror_references, struct got_pathlist_head *symrefs,
1478     struct got_pathlist_head *wanted_branches,
1479     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1480 {
1481 	const struct got_error *err = NULL;
1482 	const char *default_branch = NULL;
1483 	struct got_pathlist_entry *pe;
1484 
1485 	/*
1486 	 * If we asked for a set of wanted branches then use the first
1487 	 * one of those.
1488 	 */
1489 	if (!TAILQ_EMPTY(wanted_branches)) {
1490 		pe = TAILQ_FIRST(wanted_branches);
1491 		default_branch = pe->path;
1492 	} else {
1493 		/* First HEAD ref listed by server is the default branch. */
1494 		TAILQ_FOREACH(pe, symrefs, entry) {
1495 			const char *refname = pe->path;
1496 			const char *target = pe->data;
1497 
1498 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1499 				continue;
1500 
1501 			default_branch = target;
1502 			break;
1503 		}
1504 	}
1505 
1506 	/* Create got.conf(5). */
1507 	err = create_gotconfig(proto, host, port, remote_repo_path,
1508 	    default_branch, fetch_all_branches, wanted_branches,
1509 	    wanted_refs, mirror_references, repo);
1510 	if (err)
1511 		return err;
1512 
1513 	/* Create a config file Git can understand. */
1514 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1515 	    wanted_branches, wanted_refs, mirror_references, repo);
1516 }
1517 
1518 static const struct got_error *
1519 cmd_clone(int argc, char *argv[])
1520 {
1521 	const struct got_error *error = NULL;
1522 	const char *uri, *dirname;
1523 	char *proto, *host, *port, *repo_name, *server_path;
1524 	char *default_destdir = NULL, *id_str = NULL;
1525 	const char *repo_path;
1526 	struct got_repository *repo = NULL;
1527 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1528 	struct got_pathlist_entry *pe;
1529 	struct got_object_id *pack_hash = NULL;
1530 	int ch, fetchfd = -1, fetchstatus;
1531 	pid_t fetchpid = -1;
1532 	struct got_fetch_progress_arg fpa;
1533 	char *git_url = NULL;
1534 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1535 	int bflag = 0, list_refs_only = 0;
1536 	int *pack_fds = NULL;
1537 
1538 	TAILQ_INIT(&refs);
1539 	TAILQ_INIT(&symrefs);
1540 	TAILQ_INIT(&wanted_branches);
1541 	TAILQ_INIT(&wanted_refs);
1542 
1543 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1544 		switch (ch) {
1545 		case 'a':
1546 			fetch_all_branches = 1;
1547 			break;
1548 		case 'b':
1549 			error = got_pathlist_append(&wanted_branches,
1550 			    optarg, NULL);
1551 			if (error)
1552 				return error;
1553 			bflag = 1;
1554 			break;
1555 		case 'l':
1556 			list_refs_only = 1;
1557 			break;
1558 		case 'm':
1559 			mirror_references = 1;
1560 			break;
1561 		case 'q':
1562 			verbosity = -1;
1563 			break;
1564 		case 'R':
1565 			error = got_pathlist_append(&wanted_refs,
1566 			    optarg, NULL);
1567 			if (error)
1568 				return error;
1569 			break;
1570 		case 'v':
1571 			if (verbosity < 0)
1572 				verbosity = 0;
1573 			else if (verbosity < 3)
1574 				verbosity++;
1575 			break;
1576 		default:
1577 			usage_clone();
1578 			break;
1579 		}
1580 	}
1581 	argc -= optind;
1582 	argv += optind;
1583 
1584 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1585 		option_conflict('a', 'b');
1586 	if (list_refs_only) {
1587 		if (!TAILQ_EMPTY(&wanted_branches))
1588 			option_conflict('l', 'b');
1589 		if (fetch_all_branches)
1590 			option_conflict('l', 'a');
1591 		if (mirror_references)
1592 			option_conflict('l', 'm');
1593 		if (!TAILQ_EMPTY(&wanted_refs))
1594 			option_conflict('l', 'R');
1595 	}
1596 
1597 	uri = argv[0];
1598 
1599 	if (argc == 1)
1600 		dirname = NULL;
1601 	else if (argc == 2)
1602 		dirname = argv[1];
1603 	else
1604 		usage_clone();
1605 
1606 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1607 	    &repo_name, uri);
1608 	if (error)
1609 		goto done;
1610 
1611 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1612 	    host, port ? ":" : "", port ? port : "",
1613 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1614 		error = got_error_from_errno("asprintf");
1615 		goto done;
1616 	}
1617 
1618 	if (strcmp(proto, "git") == 0) {
1619 #ifndef PROFILE
1620 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1621 		    "sendfd dns inet unveil", NULL) == -1)
1622 			err(1, "pledge");
1623 #endif
1624 	} else if (strcmp(proto, "git+ssh") == 0 ||
1625 	    strcmp(proto, "ssh") == 0) {
1626 #ifndef PROFILE
1627 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1628 		    "sendfd unveil", NULL) == -1)
1629 			err(1, "pledge");
1630 #endif
1631 	} else if (strcmp(proto, "http") == 0 ||
1632 	    strcmp(proto, "git+http") == 0) {
1633 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1634 		goto done;
1635 	} else {
1636 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1637 		goto done;
1638 	}
1639 	if (dirname == NULL) {
1640 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1641 			error = got_error_from_errno("asprintf");
1642 			goto done;
1643 		}
1644 		repo_path = default_destdir;
1645 	} else
1646 		repo_path = dirname;
1647 
1648 	if (!list_refs_only) {
1649 		error = got_path_mkdir(repo_path);
1650 		if (error &&
1651 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1652 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1653 			goto done;
1654 		if (!got_path_dir_is_empty(repo_path)) {
1655 			error = got_error_path(repo_path,
1656 			    GOT_ERR_DIR_NOT_EMPTY);
1657 			goto done;
1658 		}
1659 	}
1660 
1661 	error = got_dial_apply_unveil(proto);
1662 	if (error)
1663 		goto done;
1664 
1665 	error = apply_unveil(repo_path, 0, NULL);
1666 	if (error)
1667 		goto done;
1668 
1669 	if (verbosity >= 0)
1670 		printf("Connecting to %s\n", git_url);
1671 
1672 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1673 	    server_path, verbosity);
1674 	if (error)
1675 		goto done;
1676 
1677 	if (!list_refs_only) {
1678 		error = got_repo_init(repo_path, NULL);
1679 		if (error)
1680 			goto done;
1681 		error = got_repo_pack_fds_open(&pack_fds);
1682 		if (error != NULL)
1683 			goto done;
1684 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1685 		if (error)
1686 			goto done;
1687 	}
1688 
1689 	fpa.last_scaled_size[0] = '\0';
1690 	fpa.last_p_indexed = -1;
1691 	fpa.last_p_resolved = -1;
1692 	fpa.verbosity = verbosity;
1693 	fpa.create_configs = 1;
1694 	fpa.configs_created = 0;
1695 	fpa.repo = repo;
1696 	fpa.config_info.symrefs = &symrefs;
1697 	fpa.config_info.wanted_branches = &wanted_branches;
1698 	fpa.config_info.wanted_refs = &wanted_refs;
1699 	fpa.config_info.proto = proto;
1700 	fpa.config_info.host = host;
1701 	fpa.config_info.port = port;
1702 	fpa.config_info.remote_repo_path = server_path;
1703 	fpa.config_info.git_url = git_url;
1704 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1705 	fpa.config_info.mirror_references = mirror_references;
1706 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1707 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1708 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1709 	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
1710 	    fetch_progress, &fpa);
1711 	if (error)
1712 		goto done;
1713 
1714 	if (list_refs_only) {
1715 		error = list_remote_refs(&symrefs, &refs);
1716 		goto done;
1717 	}
1718 
1719 	if (pack_hash == NULL) {
1720 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1721 		    "server sent an empty pack file");
1722 		goto done;
1723 	}
1724 	error = got_object_id_str(&id_str, pack_hash);
1725 	if (error)
1726 		goto done;
1727 	if (verbosity >= 0)
1728 		printf("\nFetched %s.pack\n", id_str);
1729 	free(id_str);
1730 
1731 	/* Set up references provided with the pack file. */
1732 	TAILQ_FOREACH(pe, &refs, entry) {
1733 		const char *refname = pe->path;
1734 		struct got_object_id *id = pe->data;
1735 		char *remote_refname;
1736 
1737 		if (is_wanted_ref(&wanted_refs, refname) &&
1738 		    !mirror_references) {
1739 			error = create_wanted_ref(refname, id,
1740 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1741 			    verbosity - 1, repo);
1742 			if (error)
1743 				goto done;
1744 			continue;
1745 		}
1746 
1747 		error = create_ref(refname, id, verbosity - 1, repo);
1748 		if (error)
1749 			goto done;
1750 
1751 		if (mirror_references)
1752 			continue;
1753 
1754 		if (strncmp("refs/heads/", refname, 11) != 0)
1755 			continue;
1756 
1757 		if (asprintf(&remote_refname,
1758 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1759 		    refname + 11) == -1) {
1760 			error = got_error_from_errno("asprintf");
1761 			goto done;
1762 		}
1763 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1764 		free(remote_refname);
1765 		if (error)
1766 			goto done;
1767 	}
1768 
1769 	/* Set the HEAD reference if the server provided one. */
1770 	TAILQ_FOREACH(pe, &symrefs, entry) {
1771 		struct got_reference *target_ref;
1772 		const char *refname = pe->path;
1773 		const char *target = pe->data;
1774 		char *remote_refname = NULL, *remote_target = NULL;
1775 
1776 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1777 			continue;
1778 
1779 		error = got_ref_open(&target_ref, repo, target, 0);
1780 		if (error) {
1781 			if (error->code == GOT_ERR_NOT_REF) {
1782 				error = NULL;
1783 				continue;
1784 			}
1785 			goto done;
1786 		}
1787 
1788 		error = create_symref(refname, target_ref, verbosity, repo);
1789 		got_ref_close(target_ref);
1790 		if (error)
1791 			goto done;
1792 
1793 		if (mirror_references)
1794 			continue;
1795 
1796 		if (strncmp("refs/heads/", target, 11) != 0)
1797 			continue;
1798 
1799 		if (asprintf(&remote_refname,
1800 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1801 		    refname) == -1) {
1802 			error = got_error_from_errno("asprintf");
1803 			goto done;
1804 		}
1805 		if (asprintf(&remote_target,
1806 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1807 		    target + 11) == -1) {
1808 			error = got_error_from_errno("asprintf");
1809 			free(remote_refname);
1810 			goto done;
1811 		}
1812 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1813 		if (error) {
1814 			free(remote_refname);
1815 			free(remote_target);
1816 			if (error->code == GOT_ERR_NOT_REF) {
1817 				error = NULL;
1818 				continue;
1819 			}
1820 			goto done;
1821 		}
1822 		error = create_symref(remote_refname, target_ref,
1823 		    verbosity - 1, repo);
1824 		free(remote_refname);
1825 		free(remote_target);
1826 		got_ref_close(target_ref);
1827 		if (error)
1828 			goto done;
1829 	}
1830 	if (pe == NULL) {
1831 		/*
1832 		 * We failed to set the HEAD reference. If we asked for
1833 		 * a set of wanted branches use the first of one of those
1834 		 * which could be fetched instead.
1835 		 */
1836 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1837 			const char *target = pe->path;
1838 			struct got_reference *target_ref;
1839 
1840 			error = got_ref_open(&target_ref, repo, target, 0);
1841 			if (error) {
1842 				if (error->code == GOT_ERR_NOT_REF) {
1843 					error = NULL;
1844 					continue;
1845 				}
1846 				goto done;
1847 			}
1848 
1849 			error = create_symref(GOT_REF_HEAD, target_ref,
1850 			    verbosity, repo);
1851 			got_ref_close(target_ref);
1852 			if (error)
1853 				goto done;
1854 			break;
1855 		}
1856 
1857 		if (!fpa.configs_created && pe != NULL) {
1858 			error = create_config_files(fpa.config_info.proto,
1859 			    fpa.config_info.host, fpa.config_info.port,
1860 			    fpa.config_info.remote_repo_path,
1861 			    fpa.config_info.git_url,
1862 			    fpa.config_info.fetch_all_branches,
1863 			    fpa.config_info.mirror_references,
1864 			    fpa.config_info.symrefs,
1865 			    fpa.config_info.wanted_branches,
1866 			    fpa.config_info.wanted_refs, fpa.repo);
1867 			if (error)
1868 				goto done;
1869 		}
1870 	}
1871 
1872 	if (verbosity >= 0)
1873 		printf("Created %s repository '%s'\n",
1874 		    mirror_references ? "mirrored" : "cloned", repo_path);
1875 done:
1876 	if (pack_fds) {
1877 		const struct got_error *pack_err =
1878 		    got_repo_pack_fds_close(pack_fds);
1879 		if (error == NULL)
1880 			error = pack_err;
1881 	}
1882 	if (fetchpid > 0) {
1883 		if (kill(fetchpid, SIGTERM) == -1)
1884 			error = got_error_from_errno("kill");
1885 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1886 			error = got_error_from_errno("waitpid");
1887 	}
1888 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1889 		error = got_error_from_errno("close");
1890 	if (repo) {
1891 		const struct got_error *close_err = got_repo_close(repo);
1892 		if (error == NULL)
1893 			error = close_err;
1894 	}
1895 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
1896 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
1897 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
1898 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
1899 	free(pack_hash);
1900 	free(proto);
1901 	free(host);
1902 	free(port);
1903 	free(server_path);
1904 	free(repo_name);
1905 	free(default_destdir);
1906 	free(git_url);
1907 	return error;
1908 }
1909 
1910 static const struct got_error *
1911 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1912     int replace_tags, int verbosity, struct got_repository *repo)
1913 {
1914 	const struct got_error *err = NULL;
1915 	char *new_id_str = NULL;
1916 	struct got_object_id *old_id = NULL;
1917 
1918 	err = got_object_id_str(&new_id_str, new_id);
1919 	if (err)
1920 		goto done;
1921 
1922 	if (!replace_tags &&
1923 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1924 		err = got_ref_resolve(&old_id, repo, ref);
1925 		if (err)
1926 			goto done;
1927 		if (got_object_id_cmp(old_id, new_id) == 0)
1928 			goto done;
1929 		if (verbosity >= 0) {
1930 			printf("Rejecting update of existing tag %s: %s\n",
1931 			    got_ref_get_name(ref), new_id_str);
1932 		}
1933 		goto done;
1934 	}
1935 
1936 	if (got_ref_is_symbolic(ref)) {
1937 		if (verbosity >= 0) {
1938 			printf("Replacing reference %s: %s\n",
1939 			    got_ref_get_name(ref),
1940 			    got_ref_get_symref_target(ref));
1941 		}
1942 		err = got_ref_change_symref_to_ref(ref, new_id);
1943 		if (err)
1944 			goto done;
1945 		err = got_ref_write(ref, repo);
1946 		if (err)
1947 			goto done;
1948 	} else {
1949 		err = got_ref_resolve(&old_id, repo, ref);
1950 		if (err)
1951 			goto done;
1952 		if (got_object_id_cmp(old_id, new_id) == 0)
1953 			goto done;
1954 
1955 		err = got_ref_change_ref(ref, new_id);
1956 		if (err)
1957 			goto done;
1958 		err = got_ref_write(ref, repo);
1959 		if (err)
1960 			goto done;
1961 	}
1962 
1963 	if (verbosity >= 0)
1964 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1965 		    new_id_str);
1966 done:
1967 	free(old_id);
1968 	free(new_id_str);
1969 	return err;
1970 }
1971 
1972 static const struct got_error *
1973 update_wanted_ref(const char *refname, struct got_object_id *id,
1974     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1975 {
1976 	const struct got_error *err, *unlock_err;
1977 	char *remote_refname;
1978 	struct got_reference *ref;
1979 
1980 	if (strncmp("refs/", refname, 5) == 0)
1981 		refname += 5;
1982 
1983 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1984 	    remote_repo_name, refname) == -1)
1985 		return got_error_from_errno("asprintf");
1986 
1987 	err = got_ref_open(&ref, repo, remote_refname, 1);
1988 	if (err) {
1989 		if (err->code != GOT_ERR_NOT_REF)
1990 			goto done;
1991 		err = create_ref(remote_refname, id, verbosity, repo);
1992 	} else {
1993 		err = update_ref(ref, id, 0, verbosity, repo);
1994 		unlock_err = got_ref_unlock(ref);
1995 		if (unlock_err && err == NULL)
1996 			err = unlock_err;
1997 		got_ref_close(ref);
1998 	}
1999 done:
2000 	free(remote_refname);
2001 	return err;
2002 }
2003 
2004 __dead static void
2005 usage_checkout(void)
2006 {
2007 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2008 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2009 	    getprogname());
2010 	exit(1);
2011 }
2012 
2013 static void
2014 show_worktree_base_ref_warning(void)
2015 {
2016 	fprintf(stderr, "%s: warning: could not create a reference "
2017 	    "to the work tree's base commit; the commit could be "
2018 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2019 	    "repository writable and running 'got update' will prevent this\n",
2020 	    getprogname());
2021 }
2022 
2023 struct got_checkout_progress_arg {
2024 	const char *worktree_path;
2025 	int had_base_commit_ref_error;
2026 	int verbosity;
2027 };
2028 
2029 static const struct got_error *
2030 checkout_progress(void *arg, unsigned char status, const char *path)
2031 {
2032 	struct got_checkout_progress_arg *a = arg;
2033 
2034 	/* Base commit bump happens silently. */
2035 	if (status == GOT_STATUS_BUMP_BASE)
2036 		return NULL;
2037 
2038 	if (status == GOT_STATUS_BASE_REF_ERR) {
2039 		a->had_base_commit_ref_error = 1;
2040 		return NULL;
2041 	}
2042 
2043 	while (path[0] == '/')
2044 		path++;
2045 
2046 	if (a->verbosity >= 0)
2047 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2048 
2049 	return NULL;
2050 }
2051 
2052 static const struct got_error *
2053 check_cancelled(void *arg)
2054 {
2055 	if (sigint_received || sigpipe_received)
2056 		return got_error(GOT_ERR_CANCELLED);
2057 	return NULL;
2058 }
2059 
2060 static const struct got_error *
2061 check_linear_ancestry(struct got_object_id *commit_id,
2062     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2063     struct got_repository *repo)
2064 {
2065 	const struct got_error *err = NULL;
2066 	struct got_object_id *yca_id;
2067 
2068 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2069 	    commit_id, base_commit_id, 1, 0, repo, check_cancelled, NULL);
2070 	if (err)
2071 		return err;
2072 
2073 	if (yca_id == NULL)
2074 		return got_error(GOT_ERR_ANCESTRY);
2075 
2076 	/*
2077 	 * Require a straight line of history between the target commit
2078 	 * and the work tree's base commit.
2079 	 *
2080 	 * Non-linear situations such as this require a rebase:
2081 	 *
2082 	 * (commit) D       F (base_commit)
2083 	 *           \     /
2084 	 *            C   E
2085 	 *             \ /
2086 	 *              B (yca)
2087 	 *              |
2088 	 *              A
2089 	 *
2090 	 * 'got update' only handles linear cases:
2091 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2092 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2093 	 */
2094 	if (allow_forwards_in_time_only) {
2095 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2096 		return got_error(GOT_ERR_ANCESTRY);
2097 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2098 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2099 		return got_error(GOT_ERR_ANCESTRY);
2100 
2101 	free(yca_id);
2102 	return NULL;
2103 }
2104 
2105 static const struct got_error *
2106 check_same_branch(struct got_object_id *commit_id,
2107     struct got_reference *head_ref, struct got_repository *repo)
2108 {
2109 	const struct got_error *err = NULL;
2110 	struct got_commit_graph *graph = NULL;
2111 	struct got_object_id *head_commit_id = NULL;
2112 
2113 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2114 	if (err)
2115 		goto done;
2116 
2117 	if (got_object_id_cmp(head_commit_id, commit_id) == 0)
2118 		goto done;
2119 
2120 	err = got_commit_graph_open(&graph, "/", 1);
2121 	if (err)
2122 		goto done;
2123 
2124 	err = got_commit_graph_bfsort(graph, head_commit_id, repo,
2125 	    check_cancelled, NULL);
2126 	if (err)
2127 		goto done;
2128 
2129 	for (;;) {
2130 		struct got_object_id id;
2131 
2132 		err = got_commit_graph_iter_next(&id, graph, repo,
2133 		    check_cancelled, NULL);
2134 		if (err) {
2135 			if (err->code == GOT_ERR_ITER_COMPLETED)
2136 				err = got_error(GOT_ERR_ANCESTRY);
2137 			break;
2138 		}
2139 
2140 		if (got_object_id_cmp(&id, commit_id) == 0)
2141 			break;
2142 	}
2143 done:
2144 	if (graph)
2145 		got_commit_graph_close(graph);
2146 	free(head_commit_id);
2147 	return err;
2148 }
2149 
2150 static const struct got_error *
2151 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2152 {
2153 	static char msg[512];
2154 	const char *branch_name;
2155 
2156 	if (got_ref_is_symbolic(ref))
2157 		branch_name = got_ref_get_symref_target(ref);
2158 	else
2159 		branch_name = got_ref_get_name(ref);
2160 
2161 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2162 		branch_name += 11;
2163 
2164 	snprintf(msg, sizeof(msg),
2165 	    "target commit is not contained in branch '%s'; "
2166 	    "the branch to use must be specified with -b; "
2167 	    "if necessary a new branch can be created for "
2168 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2169 	    branch_name, commit_id_str);
2170 
2171 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2172 }
2173 
2174 static const struct got_error *
2175 cmd_checkout(int argc, char *argv[])
2176 {
2177 	const struct got_error *error = NULL;
2178 	struct got_repository *repo = NULL;
2179 	struct got_reference *head_ref = NULL, *ref = NULL;
2180 	struct got_worktree *worktree = NULL;
2181 	char *repo_path = NULL;
2182 	char *worktree_path = NULL;
2183 	const char *path_prefix = "";
2184 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2185 	char *commit_id_str = NULL;
2186 	struct got_object_id *commit_id = NULL;
2187 	char *cwd = NULL;
2188 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2189 	struct got_pathlist_head paths;
2190 	struct got_checkout_progress_arg cpa;
2191 	int *pack_fds = NULL;
2192 
2193 	TAILQ_INIT(&paths);
2194 
2195 #ifndef PROFILE
2196 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2197 	    "unveil", NULL) == -1)
2198 		err(1, "pledge");
2199 #endif
2200 
2201 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
2202 		switch (ch) {
2203 		case 'b':
2204 			branch_name = optarg;
2205 			break;
2206 		case 'c':
2207 			commit_id_str = strdup(optarg);
2208 			if (commit_id_str == NULL)
2209 				return got_error_from_errno("strdup");
2210 			break;
2211 		case 'E':
2212 			allow_nonempty = 1;
2213 			break;
2214 		case 'p':
2215 			path_prefix = optarg;
2216 			break;
2217 		case 'q':
2218 			verbosity = -1;
2219 			break;
2220 		default:
2221 			usage_checkout();
2222 			/* NOTREACHED */
2223 		}
2224 	}
2225 
2226 	argc -= optind;
2227 	argv += optind;
2228 
2229 	if (argc == 1) {
2230 		char *base, *dotgit;
2231 		const char *path;
2232 		repo_path = realpath(argv[0], NULL);
2233 		if (repo_path == NULL)
2234 			return got_error_from_errno2("realpath", argv[0]);
2235 		cwd = getcwd(NULL, 0);
2236 		if (cwd == NULL) {
2237 			error = got_error_from_errno("getcwd");
2238 			goto done;
2239 		}
2240 		if (path_prefix[0])
2241 			path = path_prefix;
2242 		else
2243 			path = repo_path;
2244 		error = got_path_basename(&base, path);
2245 		if (error)
2246 			goto done;
2247 		dotgit = strstr(base, ".git");
2248 		if (dotgit)
2249 			*dotgit = '\0';
2250 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
2251 			error = got_error_from_errno("asprintf");
2252 			free(base);
2253 			goto done;
2254 		}
2255 		free(base);
2256 	} else if (argc == 2) {
2257 		repo_path = realpath(argv[0], NULL);
2258 		if (repo_path == NULL) {
2259 			error = got_error_from_errno2("realpath", argv[0]);
2260 			goto done;
2261 		}
2262 		worktree_path = realpath(argv[1], NULL);
2263 		if (worktree_path == NULL) {
2264 			if (errno != ENOENT) {
2265 				error = got_error_from_errno2("realpath",
2266 				    argv[1]);
2267 				goto done;
2268 			}
2269 			worktree_path = strdup(argv[1]);
2270 			if (worktree_path == NULL) {
2271 				error = got_error_from_errno("strdup");
2272 				goto done;
2273 			}
2274 		}
2275 	} else
2276 		usage_checkout();
2277 
2278 	got_path_strip_trailing_slashes(repo_path);
2279 	got_path_strip_trailing_slashes(worktree_path);
2280 
2281 	error = got_repo_pack_fds_open(&pack_fds);
2282 	if (error != NULL)
2283 		goto done;
2284 
2285 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2286 	if (error != NULL)
2287 		goto done;
2288 
2289 	/* Pre-create work tree path for unveil(2) */
2290 	error = got_path_mkdir(worktree_path);
2291 	if (error) {
2292 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
2293 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2294 			goto done;
2295 		if (!allow_nonempty &&
2296 		    !got_path_dir_is_empty(worktree_path)) {
2297 			error = got_error_path(worktree_path,
2298 			    GOT_ERR_DIR_NOT_EMPTY);
2299 			goto done;
2300 		}
2301 	}
2302 
2303 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
2304 	if (error)
2305 		goto done;
2306 
2307 	error = got_ref_open(&head_ref, repo, branch_name, 0);
2308 	if (error != NULL)
2309 		goto done;
2310 
2311 	error = got_worktree_init(worktree_path, head_ref, path_prefix,
2312 	    GOT_WORKTREE_CVG_DIR, repo);
2313 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2314 		goto done;
2315 
2316 	error = got_worktree_open(&worktree, worktree_path, GOT_WORKTREE_CVG_DIR);
2317 	if (error != NULL)
2318 		goto done;
2319 
2320 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
2321 	    path_prefix);
2322 	if (error != NULL)
2323 		goto done;
2324 	if (!same_path_prefix) {
2325 		error = got_error(GOT_ERR_PATH_PREFIX);
2326 		goto done;
2327 	}
2328 
2329 	if (commit_id_str) {
2330 		struct got_reflist_head refs;
2331 		TAILQ_INIT(&refs);
2332 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
2333 		    NULL);
2334 		if (error)
2335 			goto done;
2336 		error = got_repo_match_object_id(&commit_id, NULL,
2337 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
2338 		got_ref_list_free(&refs);
2339 		if (error)
2340 			goto done;
2341 		error = check_linear_ancestry(commit_id,
2342 		    got_worktree_get_base_commit_id(worktree), 0, repo);
2343 		if (error != NULL) {
2344 			if (error->code == GOT_ERR_ANCESTRY) {
2345 				error = checkout_ancestry_error(
2346 				    head_ref, commit_id_str);
2347 			}
2348 			goto done;
2349 		}
2350 		error = check_same_branch(commit_id, head_ref, repo);
2351 		if (error) {
2352 			if (error->code == GOT_ERR_ANCESTRY) {
2353 				error = checkout_ancestry_error(
2354 				    head_ref, commit_id_str);
2355 			}
2356 			goto done;
2357 		}
2358 		error = got_worktree_set_base_commit_id(worktree, repo,
2359 		    commit_id);
2360 		if (error)
2361 			goto done;
2362 		/* Expand potentially abbreviated commit ID string. */
2363 		free(commit_id_str);
2364 		error = got_object_id_str(&commit_id_str, commit_id);
2365 		if (error)
2366 			goto done;
2367 	} else {
2368 		commit_id = got_object_id_dup(
2369 		    got_worktree_get_base_commit_id(worktree));
2370 		if (commit_id == NULL) {
2371 			error = got_error_from_errno("got_object_id_dup");
2372 			goto done;
2373 		}
2374 		error = got_object_id_str(&commit_id_str, commit_id);
2375 		if (error)
2376 			goto done;
2377 	}
2378 
2379 	error = got_pathlist_append(&paths, "", NULL);
2380 	if (error)
2381 		goto done;
2382 	cpa.worktree_path = worktree_path;
2383 	cpa.had_base_commit_ref_error = 0;
2384 	cpa.verbosity = verbosity;
2385 	error = got_worktree_checkout_files(worktree, &paths, repo,
2386 	    checkout_progress, &cpa, check_cancelled, NULL);
2387 	if (error != NULL)
2388 		goto done;
2389 
2390 	if (got_ref_is_symbolic(head_ref)) {
2391 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
2392 		if (error)
2393 			goto done;
2394 		refname = got_ref_get_name(ref);
2395 	} else
2396 		refname = got_ref_get_name(head_ref);
2397 	printf("Checked out %s: %s\n", refname, commit_id_str);
2398 	printf("Now shut up and hack\n");
2399 	if (cpa.had_base_commit_ref_error)
2400 		show_worktree_base_ref_warning();
2401 done:
2402 	if (pack_fds) {
2403 		const struct got_error *pack_err =
2404 		    got_repo_pack_fds_close(pack_fds);
2405 		if (error == NULL)
2406 			error = pack_err;
2407 	}
2408 	if (head_ref)
2409 		got_ref_close(head_ref);
2410 	if (ref)
2411 		got_ref_close(ref);
2412 	if (repo) {
2413 		const struct got_error *close_err = got_repo_close(repo);
2414 		if (error == NULL)
2415 			error = close_err;
2416 	}
2417 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
2418 	free(commit_id_str);
2419 	free(commit_id);
2420 	free(repo_path);
2421 	free(worktree_path);
2422 	free(cwd);
2423 	return error;
2424 }
2425 
2426 struct got_update_progress_arg {
2427 	int did_something;
2428 	int conflicts;
2429 	int obstructed;
2430 	int not_updated;
2431 	int missing;
2432 	int not_deleted;
2433 	int unversioned;
2434 	int verbosity;
2435 };
2436 
2437 static void
2438 print_update_progress_stats(struct got_update_progress_arg *upa)
2439 {
2440 	if (!upa->did_something)
2441 		return;
2442 
2443 	if (upa->conflicts > 0)
2444 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
2445 	if (upa->obstructed > 0)
2446 		printf("File paths obstructed by a non-regular file: %d\n",
2447 		    upa->obstructed);
2448 	if (upa->not_updated > 0)
2449 		printf("Files not updated because of existing merge "
2450 		    "conflicts: %d\n", upa->not_updated);
2451 }
2452 
2453 /*
2454  * The meaning of some status codes differs between merge-style operations and
2455  * update operations. For example, the ! status code means "file was missing"
2456  * if changes were merged into the work tree, and "missing file was restored"
2457  * if the work tree was updated. This function should be used by any operation
2458  * which merges changes into the work tree without updating the work tree.
2459  */
2460 static void
2461 print_merge_progress_stats(struct got_update_progress_arg *upa)
2462 {
2463 	if (!upa->did_something)
2464 		return;
2465 
2466 	if (upa->conflicts > 0)
2467 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
2468 	if (upa->obstructed > 0)
2469 		printf("File paths obstructed by a non-regular file: %d\n",
2470 		    upa->obstructed);
2471 	if (upa->missing > 0)
2472 		printf("Files which had incoming changes but could not be "
2473 		    "found in the work tree: %d\n", upa->missing);
2474 	if (upa->not_deleted > 0)
2475 		printf("Files not deleted due to differences in deleted "
2476 		    "content: %d\n", upa->not_deleted);
2477 	if (upa->unversioned > 0)
2478 		printf("Files not merged because an unversioned file was "
2479 		    "found in the work tree: %d\n", upa->unversioned);
2480 }
2481 
2482 __dead static void
2483 usage_update(void)
2484 {
2485 	fprintf(stderr, "usage: %s update [-qtvX] [-c commit] [-r remote] "
2486 	    "[path ...]\n", getprogname());
2487 	exit(1);
2488 }
2489 
2490 static const struct got_error *
2491 update_progress(void *arg, unsigned char status, const char *path)
2492 {
2493 	struct got_update_progress_arg *upa = arg;
2494 
2495 	if (status == GOT_STATUS_EXISTS ||
2496 	    status == GOT_STATUS_BASE_REF_ERR)
2497 		return NULL;
2498 
2499 	upa->did_something = 1;
2500 
2501 	/* Base commit bump happens silently. */
2502 	if (status == GOT_STATUS_BUMP_BASE)
2503 		return NULL;
2504 
2505 	if (status == GOT_STATUS_CONFLICT)
2506 		upa->conflicts++;
2507 	if (status == GOT_STATUS_OBSTRUCTED)
2508 		upa->obstructed++;
2509 	if (status == GOT_STATUS_CANNOT_UPDATE)
2510 		upa->not_updated++;
2511 	if (status == GOT_STATUS_MISSING)
2512 		upa->missing++;
2513 	if (status == GOT_STATUS_CANNOT_DELETE)
2514 		upa->not_deleted++;
2515 	if (status == GOT_STATUS_UNVERSIONED)
2516 		upa->unversioned++;
2517 
2518 	while (path[0] == '/')
2519 		path++;
2520 	if (upa->verbosity >= 0)
2521 		printf("%c  %s\n", status, path);
2522 
2523 	return NULL;
2524 }
2525 
2526 static const struct got_error *
2527 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
2528 {
2529 	const struct got_error *err;
2530 	int in_progress;
2531 
2532 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
2533 	if (err)
2534 		return err;
2535 	if (in_progress)
2536 		return got_error(GOT_ERR_REBASING);
2537 
2538 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
2539 	if (err)
2540 		return err;
2541 	if (in_progress)
2542 		return got_error(GOT_ERR_HISTEDIT_BUSY);
2543 
2544 	return NULL;
2545 }
2546 
2547 static const struct got_error *
2548 check_merge_in_progress(struct got_worktree *worktree,
2549     struct got_repository *repo)
2550 {
2551 	const struct got_error *err;
2552 	int in_progress;
2553 
2554 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
2555 	if (err)
2556 		return err;
2557 	if (in_progress)
2558 		return got_error(GOT_ERR_MERGE_BUSY);
2559 
2560 	return NULL;
2561 }
2562 
2563 static const struct got_error *
2564 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
2565     char *argv[], struct got_worktree *worktree)
2566 {
2567 	const struct got_error *err = NULL;
2568 	char *path;
2569 	struct got_pathlist_entry *new;
2570 	int i;
2571 
2572 	if (argc == 0) {
2573 		path = strdup("");
2574 		if (path == NULL)
2575 			return got_error_from_errno("strdup");
2576 		return got_pathlist_append(paths, path, NULL);
2577 	}
2578 
2579 	for (i = 0; i < argc; i++) {
2580 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
2581 		if (err)
2582 			break;
2583 		err = got_pathlist_insert(&new, paths, path, NULL);
2584 		if (err || new == NULL /* duplicate */) {
2585 			free(path);
2586 			if (err)
2587 				break;
2588 		}
2589 	}
2590 
2591 	return err;
2592 }
2593 
2594 static const struct got_error *
2595 wrap_not_worktree_error(const struct got_error *orig_err,
2596     const char *cmdname, const char *path)
2597 {
2598 	const struct got_error *err;
2599 	struct got_repository *repo;
2600 	static char msg[512];
2601 	int *pack_fds = NULL;
2602 
2603 	err = got_repo_pack_fds_open(&pack_fds);
2604 	if (err)
2605 		return err;
2606 
2607 	err = got_repo_open(&repo, path, NULL, pack_fds);
2608 	if (err)
2609 		return orig_err;
2610 
2611 	snprintf(msg, sizeof(msg),
2612 	    "'got %s' needs a work tree in addition to a git repository\n"
2613 	    "Work trees can be checked out from this Git repository with "
2614 	    "'got checkout'.\n"
2615 	    "The got(1) manual page contains more information.", cmdname);
2616 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
2617 	if (repo) {
2618 		const struct got_error *close_err = got_repo_close(repo);
2619 		if (err == NULL)
2620 			err = close_err;
2621 	}
2622 	if (pack_fds) {
2623 		const struct got_error *pack_err =
2624 		    got_repo_pack_fds_close(pack_fds);
2625 		if (err == NULL)
2626 			err = pack_err;
2627 	}
2628 	return err;
2629 }
2630 
2631 static const struct got_error *
2632 cmd_update(int argc, char *argv[])
2633 {
2634 	const struct got_error *error = NULL, *unlock_err;
2635 	char *worktree_path = NULL;
2636 	const char *repo_path = NULL;
2637 	const char *remote_name = NULL;
2638 	char *proto = NULL, *host = NULL, *port = NULL;
2639 	char *repo_name = NULL, *server_path = NULL;
2640 	const struct got_remote_repo *remotes, *remote = NULL;
2641 	int nremotes;
2642 	char *id_str = NULL;
2643 	struct got_repository *repo = NULL;
2644 	struct got_worktree *worktree = NULL;
2645 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2646 	struct got_pathlist_head paths, refs, symrefs;
2647 	struct got_pathlist_head wanted_branches, wanted_refs;
2648 	struct got_pathlist_entry *pe;
2649 	struct got_reflist_head remote_refs;
2650 	struct got_reflist_entry *re;
2651 	struct got_object_id *pack_hash = NULL;
2652 	int i, ch, fetchfd = -1, fetchstatus;
2653 	pid_t fetchpid = -1;
2654 	struct got_fetch_progress_arg fpa;
2655 	struct got_update_progress_arg upa;
2656 	int verbosity = 0;
2657 	int delete_remote = 0;
2658 	int replace_tags = 0;
2659 	int *pack_fds = NULL;
2660 	const char *remote_head = NULL, *worktree_branch = NULL;
2661 	struct got_object_id *commit_id = NULL;
2662 	char *commit_id_str = NULL;
2663 	const char *refname;
2664 	struct got_reference *head_ref = NULL;
2665 
2666 	TAILQ_INIT(&paths);
2667 	TAILQ_INIT(&refs);
2668 	TAILQ_INIT(&symrefs);
2669 	TAILQ_INIT(&remote_refs);
2670 	TAILQ_INIT(&wanted_branches);
2671 	TAILQ_INIT(&wanted_refs);
2672 
2673 	while ((ch = getopt(argc, argv, "c:qr:vX")) != -1) {
2674 		switch (ch) {
2675 		case 'c':
2676 			commit_id_str = strdup(optarg);
2677 			if (commit_id_str == NULL)
2678 				return got_error_from_errno("strdup");
2679 			break;
2680 		case 't':
2681 			replace_tags = 1;
2682 			break;
2683 		case 'q':
2684 			verbosity = -1;
2685 			break;
2686 		case 'r':
2687 			remote_name = optarg;
2688 			break;
2689 		case 'v':
2690 			if (verbosity < 0)
2691 				verbosity = 0;
2692 			else if (verbosity < 3)
2693 				verbosity++;
2694 			break;
2695 		case 'X':
2696 			delete_remote = 1;
2697 			break;
2698 		default:
2699 			usage_update();
2700 			break;
2701 		}
2702 	}
2703 	argc -= optind;
2704 	argv += optind;
2705 
2706 	if (delete_remote) {
2707 		if (replace_tags)
2708 			option_conflict('X', 't');
2709 		if (remote_name == NULL)
2710 			errx(1, "-X option requires a remote name");
2711 	}
2712 	if (remote_name == NULL)
2713 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2714 
2715 	worktree_path = getcwd(NULL, 0);
2716 	if (worktree_path == NULL) {
2717 		error = got_error_from_errno("getcwd");
2718 		goto done;
2719 	}
2720 	error = got_worktree_open(&worktree, worktree_path, GOT_WORKTREE_CVG_DIR);
2721 	if (error) {
2722 		if (error->code == GOT_ERR_NOT_WORKTREE)
2723 			error = wrap_not_worktree_error(error, "update",
2724 			    worktree_path);
2725 		goto done;
2726 	}
2727 	repo_path = got_worktree_get_repo_path(worktree);
2728 
2729 	error = got_repo_pack_fds_open(&pack_fds);
2730 	if (error != NULL)
2731 		goto done;
2732 
2733 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2734 	if (error)
2735 		goto done;
2736 
2737 	error = check_rebase_or_histedit_in_progress(worktree);
2738 	if (error)
2739 		goto done;
2740 	error = check_merge_in_progress(worktree, repo);
2741 	if (error)
2742 		goto done;
2743 
2744 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
2745 	if (error)
2746 		goto done;
2747 
2748 	worktree_conf = got_worktree_get_gotconfig(worktree);
2749 	if (worktree_conf) {
2750 		got_gotconfig_get_remotes(&nremotes, &remotes,
2751 		    worktree_conf);
2752 		for (i = 0; i < nremotes; i++) {
2753 			if (strcmp(remotes[i].name, remote_name) == 0) {
2754 				remote = &remotes[i];
2755 				break;
2756 			}
2757 		}
2758 	}
2759 
2760 	if (remote == NULL) {
2761 		repo_conf = got_repo_get_gotconfig(repo);
2762 		if (repo_conf) {
2763 			got_gotconfig_get_remotes(&nremotes, &remotes,
2764 			    repo_conf);
2765 			for (i = 0; i < nremotes; i++) {
2766 				if (strcmp(remotes[i].name, remote_name) == 0) {
2767 					remote = &remotes[i];
2768 					break;
2769 				}
2770 			}
2771 		}
2772 	}
2773 	if (remote == NULL) {
2774 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2775 		for (i = 0; i < nremotes; i++) {
2776 			if (strcmp(remotes[i].name, remote_name) == 0) {
2777 				remote = &remotes[i];
2778 				break;
2779 			}
2780 		}
2781 	}
2782 	if (remote == NULL) {
2783 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2784 		goto done;
2785 	}
2786 
2787 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2788 	    &repo_name, remote->fetch_url);
2789 	if (error)
2790 		goto done;
2791 
2792 	if (strcmp(proto, "git") == 0) {
2793 #ifndef PROFILE
2794 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2795 		    "sendfd dns inet unveil", NULL) == -1)
2796 			err(1, "pledge");
2797 #endif
2798 	} else if (strcmp(proto, "git+ssh") == 0 ||
2799 	    strcmp(proto, "ssh") == 0) {
2800 #ifndef PROFILE
2801 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2802 		    "sendfd unveil", NULL) == -1)
2803 			err(1, "pledge");
2804 #endif
2805 	} else if (strcmp(proto, "http") == 0 ||
2806 	    strcmp(proto, "git+http") == 0) {
2807 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2808 		goto done;
2809 	} else {
2810 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2811 		goto done;
2812 	}
2813 
2814 	error = got_dial_apply_unveil(proto);
2815 	if (error)
2816 		goto done;
2817 
2818 	error = apply_unveil(got_repo_get_path(repo), 0,
2819 	    got_worktree_get_root_path(worktree));
2820 	if (error)
2821 		goto done;
2822 
2823 	if (verbosity >= 0) {
2824 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
2825 		    remote->name, proto, host,
2826 		    port ? ":" : "", port ? port : "",
2827 		    *server_path == '/' ? "" : "/", server_path);
2828 	}
2829 
2830 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2831 	    server_path, verbosity);
2832 	if (error)
2833 		goto done;
2834 
2835 	/*
2836 	 * If set, get this remote's HEAD ref target so
2837 	 * if it has changed on the server we can fetch it.
2838 	 */
2839 	error = got_ref_list(&remote_refs, repo, "refs/remotes",
2840 	    got_ref_cmp_by_name, repo);
2841 	if (error)
2842 		goto done;
2843 
2844 	TAILQ_FOREACH(re, &remote_refs, entry) {
2845 		const char	*remote_refname, *remote_target;
2846 		size_t		 remote_name_len;
2847 
2848 		if (!got_ref_is_symbolic(re->ref))
2849 			continue;
2850 
2851 		remote_name_len = strlen(remote->name);
2852 		remote_refname = got_ref_get_name(re->ref);
2853 
2854 		/* we only want refs/remotes/$remote->name/HEAD */
2855 		if (strncmp(remote_refname + 13, remote->name,
2856 		    remote_name_len) != 0)
2857 			continue;
2858 
2859 		if (strcmp(remote_refname + remote_name_len + 14,
2860 		    GOT_REF_HEAD) != 0)
2861 			continue;
2862 
2863 		/*
2864 		 * Take the name itself because we already
2865 		 * only match with refs/heads/ in fetch_pack().
2866 		 */
2867 		remote_target = got_ref_get_symref_target(re->ref);
2868 		remote_head = remote_target + remote_name_len + 14;
2869 		break;
2870 	}
2871 
2872 	refname = got_worktree_get_head_ref_name(worktree);
2873 	if (strncmp(refname, "refs/heads/", 11) == 0)
2874 		worktree_branch = refname;
2875 
2876 	fpa.last_scaled_size[0] = '\0';
2877 	fpa.last_p_indexed = -1;
2878 	fpa.last_p_resolved = -1;
2879 	fpa.verbosity = verbosity;
2880 	fpa.repo = repo;
2881 	fpa.create_configs = 0;
2882 	fpa.configs_created = 0;
2883 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2884 
2885 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2886 	    remote->mirror_references, 0, &wanted_branches, &wanted_refs,
2887 	    0, verbosity, fetchfd, repo, worktree_branch, remote_head,
2888 	    0, fetch_progress, &fpa);
2889 	if (error)
2890 		goto done;
2891 
2892 	if (pack_hash != NULL && verbosity >= 0) {
2893 		error = got_object_id_str(&id_str, pack_hash);
2894 		if (error)
2895 			goto done;
2896 		printf("\nFetched %s.pack\n", id_str);
2897 		free(id_str);
2898 		id_str = NULL;
2899 	}
2900 
2901 	/* Update references provided with the pack file. */
2902 	TAILQ_FOREACH(pe, &refs, entry) {
2903 		const char *refname = pe->path;
2904 		struct got_object_id *id = pe->data;
2905 		struct got_reference *ref;
2906 
2907 		if (is_wanted_ref(&wanted_refs, refname)) {
2908 			error = update_wanted_ref(refname, id,
2909 			    remote->name, verbosity, repo);
2910 			if (error)
2911 				goto done;
2912 			continue;
2913 		}
2914 
2915 		error = got_ref_open(&ref, repo, refname, 1);
2916 		if (error) {
2917 			if (error->code != GOT_ERR_NOT_REF)
2918 				goto done;
2919 			error = create_ref(refname, id, verbosity,
2920 			    repo);
2921 			if (error)
2922 				goto done;
2923 		} else {
2924 			error = update_ref(ref, id, replace_tags,
2925 			    verbosity-1, repo);
2926 			unlock_err = got_ref_unlock(ref);
2927 			if (unlock_err && error == NULL)
2928 				error = unlock_err;
2929 			got_ref_close(ref);
2930 			if (error)
2931 				goto done;
2932 		}
2933 	}
2934 
2935 	/* Update worktree */
2936 	error = got_ref_open(&head_ref, repo,
2937 	    got_worktree_get_head_ref_name(worktree), 0);
2938 	if (error != NULL)
2939 		goto done;
2940 	if (commit_id_str == NULL) {
2941 		error = got_ref_resolve(&commit_id, repo, head_ref);
2942 		if (error != NULL)
2943 			goto done;
2944 		error = got_object_id_str(&commit_id_str, commit_id);
2945 		if (error != NULL)
2946 			goto done;
2947 	} else {
2948 		struct got_reflist_head refs;
2949 		TAILQ_INIT(&refs);
2950 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
2951 		    NULL);
2952 		if (error)
2953 			goto done;
2954 		error = got_repo_match_object_id(&commit_id, NULL,
2955 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
2956 		got_ref_list_free(&refs);
2957 		free(commit_id_str);
2958 		commit_id_str = NULL;
2959 		if (error)
2960 			goto done;
2961 		error = got_object_id_str(&commit_id_str, commit_id);
2962 		if (error)
2963 			goto done;
2964 	}
2965 
2966 
2967 	error = check_linear_ancestry(commit_id,
2968 	    got_worktree_get_base_commit_id(worktree), 0, repo);
2969 	if (error != NULL) {
2970 		if (error->code == GOT_ERR_ANCESTRY)
2971 			error = got_error(GOT_ERR_BRANCH_MOVED);
2972 		goto done;
2973 	}
2974 	error = check_same_branch(commit_id, head_ref, repo);
2975 	if (error)
2976 		goto done;
2977 
2978 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
2979 	    commit_id) != 0) {
2980 		error = got_worktree_set_base_commit_id(worktree, repo,
2981 		    commit_id);
2982 		if (error)
2983 			goto done;
2984 	}
2985 
2986 	memset(&upa, 0, sizeof(upa));
2987 	upa.verbosity = verbosity;
2988 	error = got_worktree_checkout_files(worktree, &paths, repo,
2989 	    update_progress, &upa, check_cancelled, NULL);
2990 	if (error != NULL)
2991 		goto done;
2992 
2993 	if (upa.did_something) {
2994 		printf("Updated to %s: %s\n",
2995 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
2996 	} else
2997 		printf("Already up-to-date\n");
2998 
2999 	print_update_progress_stats(&upa);
3000 done:
3001 	if (fetchpid > 0) {
3002 		if (kill(fetchpid, SIGTERM) == -1)
3003 			error = got_error_from_errno("kill");
3004 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
3005 			error = got_error_from_errno("waitpid");
3006 	}
3007 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
3008 		error = got_error_from_errno("close");
3009 	if (repo) {
3010 		const struct got_error *close_err = got_repo_close(repo);
3011 		if (error == NULL)
3012 			error = close_err;
3013 	}
3014 	if (worktree)
3015 		got_worktree_close(worktree);
3016 	if (pack_fds) {
3017 		const struct got_error *pack_err =
3018 		    got_repo_pack_fds_close(pack_fds);
3019 		if (error == NULL)
3020 			error = pack_err;
3021 	}
3022 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
3023 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
3024 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
3025 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
3026 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
3027 	got_ref_list_free(&remote_refs);
3028 	free(id_str);
3029 	free(worktree_path);
3030 	free(pack_hash);
3031 	free(proto);
3032 	free(host);
3033 	free(port);
3034 	free(server_path);
3035 	free(repo_name);
3036 	free(commit_id);
3037 	free(commit_id_str);
3038 	return error;
3039 }
3040 
3041 static const struct got_error *
3042 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3043     const char *path, int diff_context, int ignore_whitespace,
3044     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3045     struct got_repository *repo, FILE *outfile)
3046 {
3047 	const struct got_error *err = NULL;
3048 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3049 	FILE *f1 = NULL, *f2 = NULL;
3050 	int fd1 = -1, fd2 = -1;
3051 
3052 	fd1 = got_opentempfd();
3053 	if (fd1 == -1)
3054 		return got_error_from_errno("got_opentempfd");
3055 	fd2 = got_opentempfd();
3056 	if (fd2 == -1) {
3057 		err = got_error_from_errno("got_opentempfd");
3058 		goto done;
3059 	}
3060 
3061 	if (blob_id1) {
3062 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3063 		    fd1);
3064 		if (err)
3065 			goto done;
3066 	}
3067 
3068 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3069 	if (err)
3070 		goto done;
3071 
3072 	f1 = got_opentemp();
3073 	if (f1 == NULL) {
3074 		err = got_error_from_errno("got_opentemp");
3075 		goto done;
3076 	}
3077 	f2 = got_opentemp();
3078 	if (f2 == NULL) {
3079 		err = got_error_from_errno("got_opentemp");
3080 		goto done;
3081 	}
3082 
3083 	while (path[0] == '/')
3084 		path++;
3085 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3086 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3087 	    force_text_diff, dsa, outfile);
3088 done:
3089 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3090 		err = got_error_from_errno("close");
3091 	if (blob1)
3092 		got_object_blob_close(blob1);
3093 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3094 		err = got_error_from_errno("close");
3095 	if (blob2)
3096 		got_object_blob_close(blob2);
3097 	if (f1 && fclose(f1) == EOF && err == NULL)
3098 		err = got_error_from_errno("fclose");
3099 	if (f2 && fclose(f2) == EOF && err == NULL)
3100 		err = got_error_from_errno("fclose");
3101 	return err;
3102 }
3103 
3104 static const struct got_error *
3105 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3106     const char *path, int diff_context, int ignore_whitespace,
3107     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3108     struct got_repository *repo, FILE *outfile)
3109 {
3110 	const struct got_error *err = NULL;
3111 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3112 	struct got_diff_blob_output_unidiff_arg arg;
3113 	FILE *f1 = NULL, *f2 = NULL;
3114 	int fd1 = -1, fd2 = -1;
3115 
3116 	if (tree_id1) {
3117 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3118 		if (err)
3119 			goto done;
3120 		fd1 = got_opentempfd();
3121 		if (fd1 == -1) {
3122 			err = got_error_from_errno("got_opentempfd");
3123 			goto done;
3124 		}
3125 	}
3126 
3127 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3128 	if (err)
3129 		goto done;
3130 
3131 	f1 = got_opentemp();
3132 	if (f1 == NULL) {
3133 		err = got_error_from_errno("got_opentemp");
3134 		goto done;
3135 	}
3136 
3137 	f2 = got_opentemp();
3138 	if (f2 == NULL) {
3139 		err = got_error_from_errno("got_opentemp");
3140 		goto done;
3141 	}
3142 	fd2 = got_opentempfd();
3143 	if (fd2 == -1) {
3144 		err = got_error_from_errno("got_opentempfd");
3145 		goto done;
3146 	}
3147 	arg.diff_context = diff_context;
3148 	arg.ignore_whitespace = ignore_whitespace;
3149 	arg.force_text_diff = force_text_diff;
3150 	arg.diffstat = dsa;
3151 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3152 	arg.outfile = outfile;
3153 	arg.lines = NULL;
3154 	arg.nlines = 0;
3155 	while (path[0] == '/')
3156 		path++;
3157 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3158 	    got_diff_blob_output_unidiff, &arg, 1);
3159 done:
3160 	if (tree1)
3161 		got_object_tree_close(tree1);
3162 	if (tree2)
3163 		got_object_tree_close(tree2);
3164 	if (f1 && fclose(f1) == EOF && err == NULL)
3165 		err = got_error_from_errno("fclose");
3166 	if (f2 && fclose(f2) == EOF && err == NULL)
3167 		err = got_error_from_errno("fclose");
3168 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3169 		err = got_error_from_errno("close");
3170 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3171 		err = got_error_from_errno("close");
3172 	return err;
3173 }
3174 
3175 static const struct got_error *
3176 get_changed_paths(struct got_pathlist_head *paths,
3177     struct got_commit_object *commit, struct got_repository *repo,
3178     struct got_diffstat_cb_arg *dsa)
3179 {
3180 	const struct got_error *err = NULL;
3181 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3182 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3183 	struct got_object_qid *qid;
3184 	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
3185 	FILE *f1 = NULL, *f2 = NULL;
3186 	int fd1 = -1, fd2 = -1;
3187 
3188 	if (dsa) {
3189 		cb = got_diff_tree_compute_diffstat;
3190 
3191 		f1 = got_opentemp();
3192 		if (f1 == NULL) {
3193 			err = got_error_from_errno("got_opentemp");
3194 			goto done;
3195 		}
3196 		f2 = got_opentemp();
3197 		if (f2 == NULL) {
3198 			err = got_error_from_errno("got_opentemp");
3199 			goto done;
3200 		}
3201 		fd1 = got_opentempfd();
3202 		if (fd1 == -1) {
3203 			err = got_error_from_errno("got_opentempfd");
3204 			goto done;
3205 		}
3206 		fd2 = got_opentempfd();
3207 		if (fd2 == -1) {
3208 			err = got_error_from_errno("got_opentempfd");
3209 			goto done;
3210 		}
3211 	}
3212 
3213 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3214 	if (qid != NULL) {
3215 		struct got_commit_object *pcommit;
3216 		err = got_object_open_as_commit(&pcommit, repo,
3217 		    &qid->id);
3218 		if (err)
3219 			return err;
3220 
3221 		tree_id1 = got_object_id_dup(
3222 		    got_object_commit_get_tree_id(pcommit));
3223 		if (tree_id1 == NULL) {
3224 			got_object_commit_close(pcommit);
3225 			return got_error_from_errno("got_object_id_dup");
3226 		}
3227 		got_object_commit_close(pcommit);
3228 
3229 	}
3230 
3231 	if (tree_id1) {
3232 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3233 		if (err)
3234 			goto done;
3235 	}
3236 
3237 	tree_id2 = got_object_commit_get_tree_id(commit);
3238 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3239 	if (err)
3240 		goto done;
3241 
3242 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
3243 	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
3244 done:
3245 	if (tree1)
3246 		got_object_tree_close(tree1);
3247 	if (tree2)
3248 		got_object_tree_close(tree2);
3249 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3250 		err = got_error_from_errno("close");
3251 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3252 		err = got_error_from_errno("close");
3253 	if (f1 && fclose(f1) == EOF && err == NULL)
3254 		err = got_error_from_errno("fclose");
3255 	if (f2 && fclose(f2) == EOF && err == NULL)
3256 		err = got_error_from_errno("fclose");
3257 	free(tree_id1);
3258 	return err;
3259 }
3260 
3261 static const struct got_error *
3262 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3263     const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
3264     struct got_repository *repo, FILE *outfile)
3265 {
3266 	const struct got_error *err = NULL;
3267 	struct got_commit_object *pcommit = NULL;
3268 	char *id_str1 = NULL, *id_str2 = NULL;
3269 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3270 	struct got_object_qid *qid;
3271 
3272 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3273 	if (qid != NULL) {
3274 		err = got_object_open_as_commit(&pcommit, repo,
3275 		    &qid->id);
3276 		if (err)
3277 			return err;
3278 		err = got_object_id_str(&id_str1, &qid->id);
3279 		if (err)
3280 			goto done;
3281 	}
3282 
3283 	err = got_object_id_str(&id_str2, id);
3284 	if (err)
3285 		goto done;
3286 
3287 	if (path && path[0] != '\0') {
3288 		int obj_type;
3289 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3290 		if (err)
3291 			goto done;
3292 		if (pcommit) {
3293 			err = got_object_id_by_path(&obj_id1, repo,
3294 			    pcommit, path);
3295 			if (err) {
3296 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3297 					free(obj_id2);
3298 					goto done;
3299 				}
3300 			}
3301 		}
3302 		err = got_object_get_type(&obj_type, repo, obj_id2);
3303 		if (err) {
3304 			free(obj_id2);
3305 			goto done;
3306 		}
3307 		fprintf(outfile,
3308 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3309 		fprintf(outfile, "commit - %s\n",
3310 		    id_str1 ? id_str1 : "/dev/null");
3311 		fprintf(outfile, "commit + %s\n", id_str2);
3312 		switch (obj_type) {
3313 		case GOT_OBJ_TYPE_BLOB:
3314 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3315 			    0, 0, dsa, repo, outfile);
3316 			break;
3317 		case GOT_OBJ_TYPE_TREE:
3318 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3319 			    0, 0, dsa, repo, outfile);
3320 			break;
3321 		default:
3322 			err = got_error(GOT_ERR_OBJ_TYPE);
3323 			break;
3324 		}
3325 		free(obj_id1);
3326 		free(obj_id2);
3327 	} else {
3328 		obj_id2 = got_object_commit_get_tree_id(commit);
3329 		if (pcommit)
3330 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3331 		fprintf(outfile,
3332 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3333 		fprintf(outfile, "commit - %s\n",
3334 		    id_str1 ? id_str1 : "/dev/null");
3335 		fprintf(outfile, "commit + %s\n", id_str2);
3336 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3337 		    dsa, repo, outfile);
3338 	}
3339 done:
3340 	free(id_str1);
3341 	free(id_str2);
3342 	if (pcommit)
3343 		got_object_commit_close(pcommit);
3344 	return err;
3345 }
3346 
3347 static char *
3348 get_datestr(time_t *time, char *datebuf)
3349 {
3350 	struct tm mytm, *tm;
3351 	char *p, *s;
3352 
3353 	tm = gmtime_r(time, &mytm);
3354 	if (tm == NULL)
3355 		return NULL;
3356 	s = asctime_r(tm, datebuf);
3357 	if (s == NULL)
3358 		return NULL;
3359 	p = strchr(s, '\n');
3360 	if (p)
3361 		*p = '\0';
3362 	return s;
3363 }
3364 
3365 static const struct got_error *
3366 match_commit(int *have_match, struct got_object_id *id,
3367     struct got_commit_object *commit, regex_t *regex)
3368 {
3369 	const struct got_error *err = NULL;
3370 	regmatch_t regmatch;
3371 	char *id_str = NULL, *logmsg = NULL;
3372 
3373 	*have_match = 0;
3374 
3375 	err = got_object_id_str(&id_str, id);
3376 	if (err)
3377 		return err;
3378 
3379 	err = got_object_commit_get_logmsg(&logmsg, commit);
3380 	if (err)
3381 		goto done;
3382 
3383 	if (regexec(regex, got_object_commit_get_author(commit), 1,
3384 	    &regmatch, 0) == 0 ||
3385 	    regexec(regex, got_object_commit_get_committer(commit), 1,
3386 	    &regmatch, 0) == 0 ||
3387 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
3388 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3389 		*have_match = 1;
3390 done:
3391 	free(id_str);
3392 	free(logmsg);
3393 	return err;
3394 }
3395 
3396 static void
3397 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3398     regex_t *regex)
3399 {
3400 	regmatch_t regmatch;
3401 	struct got_pathlist_entry *pe;
3402 
3403 	*have_match = 0;
3404 
3405 	TAILQ_FOREACH(pe, changed_paths, entry) {
3406 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3407 			*have_match = 1;
3408 			break;
3409 		}
3410 	}
3411 }
3412 
3413 static const struct got_error *
3414 match_patch(int *have_match, struct got_commit_object *commit,
3415     struct got_object_id *id, const char *path, int diff_context,
3416     struct got_repository *repo, regex_t *regex, FILE *f)
3417 {
3418 	const struct got_error *err = NULL;
3419 	char *line = NULL;
3420 	size_t linesize = 0;
3421 	regmatch_t regmatch;
3422 
3423 	*have_match = 0;
3424 
3425 	err = got_opentemp_truncate(f);
3426 	if (err)
3427 		return err;
3428 
3429 	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
3430 	if (err)
3431 		goto done;
3432 
3433 	if (fseeko(f, 0L, SEEK_SET) == -1) {
3434 		err = got_error_from_errno("fseeko");
3435 		goto done;
3436 	}
3437 
3438 	while (getline(&line, &linesize, f) != -1) {
3439 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
3440 			*have_match = 1;
3441 			break;
3442 		}
3443 	}
3444 done:
3445 	free(line);
3446 	return err;
3447 }
3448 
3449 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3450 
3451 static const struct got_error*
3452 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3453     struct got_object_id *id, struct got_repository *repo,
3454     int local_only)
3455 {
3456 	static const struct got_error *err = NULL;
3457 	struct got_reflist_entry *re;
3458 	char *s;
3459 	const char *name;
3460 
3461 	*refs_str = NULL;
3462 
3463 	TAILQ_FOREACH(re, refs, entry) {
3464 		struct got_tag_object *tag = NULL;
3465 		struct got_object_id *ref_id;
3466 		int cmp;
3467 
3468 		name = got_ref_get_name(re->ref);
3469 		if (strcmp(name, GOT_REF_HEAD) == 0)
3470 			continue;
3471 		if (strncmp(name, "refs/", 5) == 0)
3472 			name += 5;
3473 		if (strncmp(name, "got/", 4) == 0)
3474 			continue;
3475 		if (strncmp(name, "heads/", 6) == 0)
3476 			name += 6;
3477 		if (strncmp(name, "remotes/", 8) == 0) {
3478 			if (local_only)
3479 				continue;
3480 			name += 8;
3481 			s = strstr(name, "/" GOT_REF_HEAD);
3482 			if (s != NULL && strcmp(s, "/" GOT_REF_HEAD) == 0)
3483 				continue;
3484 		}
3485 		err = got_ref_resolve(&ref_id, repo, re->ref);
3486 		if (err)
3487 			break;
3488 		if (strncmp(name, "tags/", 5) == 0) {
3489 			err = got_object_open_as_tag(&tag, repo, ref_id);
3490 			if (err) {
3491 				if (err->code != GOT_ERR_OBJ_TYPE) {
3492 					free(ref_id);
3493 					break;
3494 				}
3495 				/* Ref points at something other than a tag. */
3496 				err = NULL;
3497 				tag = NULL;
3498 			}
3499 		}
3500 		cmp = got_object_id_cmp(tag ?
3501 		    got_object_tag_get_object_id(tag) : ref_id, id);
3502 		free(ref_id);
3503 		if (tag)
3504 			got_object_tag_close(tag);
3505 		if (cmp != 0)
3506 			continue;
3507 		s = *refs_str;
3508 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
3509 		    s ? ", " : "", name) == -1) {
3510 			err = got_error_from_errno("asprintf");
3511 			free(s);
3512 			*refs_str = NULL;
3513 			break;
3514 		}
3515 		free(s);
3516 	}
3517 
3518 	return err;
3519 }
3520 
3521 static const struct got_error *
3522 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
3523     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
3524 {
3525 	const struct got_error *err = NULL;
3526 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
3527 	char *comma, *s, *nl;
3528 	struct got_reflist_head *refs;
3529 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
3530 	struct tm tm;
3531 	time_t committer_time;
3532 
3533 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
3534 	if (refs) {
3535 		err = build_refs_str(&ref_str, refs, id, repo, 1);
3536 		if (err)
3537 			return err;
3538 
3539 		/* Display the first matching ref only. */
3540 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
3541 			*comma = '\0';
3542 	}
3543 
3544 	if (ref_str == NULL) {
3545 		err = got_object_id_str(&id_str, id);
3546 		if (err)
3547 			return err;
3548 	}
3549 
3550 	committer_time = got_object_commit_get_committer_time(commit);
3551 	if (gmtime_r(&committer_time, &tm) == NULL) {
3552 		err = got_error_from_errno("gmtime_r");
3553 		goto done;
3554 	}
3555 	if (strftime(datebuf, sizeof(datebuf), "%F ", &tm) == 0) {
3556 		err = got_error(GOT_ERR_NO_SPACE);
3557 		goto done;
3558 	}
3559 
3560 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3561 	if (err)
3562 		goto done;
3563 
3564 	s = logmsg0;
3565 	while (isspace((unsigned char)s[0]))
3566 		s++;
3567 
3568 	nl = strchr(s, '\n');
3569 	if (nl) {
3570 		*nl = '\0';
3571 	}
3572 
3573 	if (ref_str)
3574 		printf("%s%-7s %s\n", datebuf, ref_str, s);
3575 	else
3576 		printf("%s%.7s %s\n", datebuf, id_str, s);
3577 
3578 	if (fflush(stdout) != 0 && err == NULL)
3579 		err = got_error_from_errno("fflush");
3580 done:
3581 	free(id_str);
3582 	free(ref_str);
3583 	free(logmsg0);
3584 	return err;
3585 }
3586 
3587 static const struct got_error *
3588 print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
3589 {
3590 	struct got_pathlist_entry *pe;
3591 
3592 	if (header != NULL)
3593 		printf("%s\n", header);
3594 
3595 	TAILQ_FOREACH(pe, dsa->paths, entry) {
3596 		struct got_diff_changed_path *cp = pe->data;
3597 		int pad = dsa->max_path_len - pe->path_len + 1;
3598 
3599 		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
3600 		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
3601 	}
3602 	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
3603 	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
3604 	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
3605 
3606 	if (fflush(stdout) != 0)
3607 		return got_error_from_errno("fflush");
3608 
3609 	return NULL;
3610 }
3611 
3612 static const struct got_error *
3613 printfile(FILE *f)
3614 {
3615 	char	buf[8192];
3616 	size_t	r;
3617 
3618 	if (fseeko(f, 0L, SEEK_SET) == -1)
3619 		return got_error_from_errno("fseek");
3620 
3621 	for (;;) {
3622 		r = fread(buf, 1, sizeof(buf), f);
3623 		if (r == 0) {
3624 			if (ferror(f))
3625 				return got_error_from_errno("fread");
3626 			if (feof(f))
3627 				break;
3628 		}
3629 		if (fwrite(buf, 1, r, stdout) != r)
3630 			return got_ferror(stdout, GOT_ERR_IO);
3631 	}
3632 
3633 	return NULL;
3634 }
3635 
3636 static const struct got_error *
3637 print_commit(struct got_commit_object *commit, struct got_object_id *id,
3638     struct got_repository *repo, const char *path,
3639     struct got_pathlist_head *changed_paths,
3640     struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
3641     struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
3642     const char *prefix)
3643 {
3644 	const struct got_error *err = NULL;
3645 	FILE *f = NULL;
3646 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
3647 	char datebuf[26];
3648 	time_t committer_time;
3649 	const char *author, *committer;
3650 	char *refs_str = NULL;
3651 
3652 	err = got_object_id_str(&id_str, id);
3653 	if (err)
3654 		return err;
3655 
3656 	if (custom_refs_str == NULL) {
3657 		struct got_reflist_head *refs;
3658 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
3659 		if (refs) {
3660 			err = build_refs_str(&refs_str, refs, id, repo, 0);
3661 			if (err)
3662 				goto done;
3663 		}
3664 	}
3665 
3666 	printf(GOT_COMMIT_SEP_STR);
3667 	if (custom_refs_str)
3668 		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
3669 		    custom_refs_str);
3670 	else
3671 		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
3672 		    refs_str ? " (" : "", refs_str ? refs_str : "",
3673 		    refs_str ? ")" : "");
3674 	free(id_str);
3675 	id_str = NULL;
3676 	free(refs_str);
3677 	refs_str = NULL;
3678 	printf("from: %s\n", got_object_commit_get_author(commit));
3679 	author = got_object_commit_get_author(commit);
3680 	committer = got_object_commit_get_committer(commit);
3681 	if (strcmp(author, committer) != 0)
3682 		printf("via: %s\n", committer);
3683 	committer_time = got_object_commit_get_committer_time(commit);
3684 	datestr = get_datestr(&committer_time, datebuf);
3685 	if (datestr)
3686 		printf("date: %s UTC\n", datestr);
3687 	if (got_object_commit_get_nparents(commit) > 1) {
3688 		const struct got_object_id_queue *parent_ids;
3689 		struct got_object_qid *qid;
3690 		int n = 1;
3691 		parent_ids = got_object_commit_get_parent_ids(commit);
3692 		STAILQ_FOREACH(qid, parent_ids, entry) {
3693 			err = got_object_id_str(&id_str, &qid->id);
3694 			if (err)
3695 				goto done;
3696 			printf("parent %d: %s\n", n++, id_str);
3697 			free(id_str);
3698 			id_str = NULL;
3699 		}
3700 	}
3701 
3702 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3703 	if (err)
3704 		goto done;
3705 
3706 	logmsg = logmsg0;
3707 	do {
3708 		line = strsep(&logmsg, "\n");
3709 		if (line)
3710 			printf(" %s\n", line);
3711 	} while (line);
3712 	free(logmsg0);
3713 
3714 	if (changed_paths && diffstat == NULL) {
3715 		struct got_pathlist_entry *pe;
3716 
3717 		TAILQ_FOREACH(pe, changed_paths, entry) {
3718 			struct got_diff_changed_path *cp = pe->data;
3719 
3720 			printf(" %c  %s\n", cp->status, pe->path);
3721 		}
3722 		printf("\n");
3723 	}
3724 	if (show_patch) {
3725 		if (diffstat) {
3726 			f = got_opentemp();
3727 			if (f == NULL) {
3728 				err = got_error_from_errno("got_opentemp");
3729 				goto done;
3730 			}
3731 		}
3732 
3733 		err = print_patch(commit, id, path, diff_context, diffstat,
3734 		    repo, diffstat == NULL ? stdout : f);
3735 		if (err)
3736 			goto done;
3737 	}
3738 	if (diffstat) {
3739 		err = print_diffstat(diffstat, NULL);
3740 		if (err)
3741 			goto done;
3742 		if (show_patch) {
3743 			err = printfile(f);
3744 			if (err)
3745 				goto done;
3746 		}
3747 	}
3748 	if (show_patch)
3749 		printf("\n");
3750 
3751 	if (fflush(stdout) != 0 && err == NULL)
3752 		err = got_error_from_errno("fflush");
3753 done:
3754 	if (f && fclose(f) == EOF && err == NULL)
3755 		err = got_error_from_errno("fclose");
3756 	free(id_str);
3757 	free(refs_str);
3758 	return err;
3759 }
3760 
3761 static const struct got_error *
3762 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
3763     struct got_repository *repo, const char *path, int show_changed_paths,
3764     int show_diffstat, int show_patch, const char *search_pattern,
3765     int diff_context, int limit, int log_branches, int reverse_display_order,
3766     struct got_reflist_object_id_map *refs_idmap, int one_line,
3767     FILE *tmpfile)
3768 {
3769 	const struct got_error *err;
3770 	struct got_commit_graph *graph;
3771 	regex_t regex;
3772 	int have_match;
3773 	struct got_object_id_queue reversed_commits;
3774 	struct got_object_qid *qid;
3775 	struct got_commit_object *commit;
3776 	struct got_pathlist_head changed_paths;
3777 
3778 	STAILQ_INIT(&reversed_commits);
3779 	TAILQ_INIT(&changed_paths);
3780 
3781 	if (search_pattern && regcomp(&regex, search_pattern,
3782 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
3783 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
3784 
3785 	err = got_commit_graph_open(&graph, path, !log_branches);
3786 	if (err)
3787 		return err;
3788 	err = got_commit_graph_bfsort(graph, root_id, repo,
3789 	    check_cancelled, NULL);
3790 	if (err)
3791 		goto done;
3792 	for (;;) {
3793 		struct got_object_id id;
3794 		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
3795 		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
3796 
3797 		if (sigint_received || sigpipe_received)
3798 			break;
3799 
3800 		err = got_commit_graph_iter_next(&id, graph, repo,
3801 		    check_cancelled, NULL);
3802 		if (err) {
3803 			if (err->code == GOT_ERR_ITER_COMPLETED)
3804 				err = NULL;
3805 			break;
3806 		}
3807 
3808 		err = got_object_open_as_commit(&commit, repo, &id);
3809 		if (err)
3810 			break;
3811 
3812 		if ((show_changed_paths || (show_diffstat && !show_patch))
3813 		    && !reverse_display_order) {
3814 			err = get_changed_paths(&changed_paths, commit, repo,
3815 			    show_diffstat ? &dsa : NULL);
3816 			if (err)
3817 				break;
3818 		}
3819 
3820 		if (search_pattern) {
3821 			err = match_commit(&have_match, &id, commit, &regex);
3822 			if (err) {
3823 				got_object_commit_close(commit);
3824 				break;
3825 			}
3826 			if (have_match == 0 && show_changed_paths)
3827 				match_changed_paths(&have_match,
3828 				    &changed_paths, &regex);
3829 			if (have_match == 0 && show_patch) {
3830 				err = match_patch(&have_match, commit, &id,
3831 				    path, diff_context, repo, &regex, tmpfile);
3832 				if (err)
3833 					break;
3834 			}
3835 			if (have_match == 0) {
3836 				got_object_commit_close(commit);
3837 				got_pathlist_free(&changed_paths,
3838 				    GOT_PATHLIST_FREE_ALL);
3839 				continue;
3840 			}
3841 		}
3842 
3843 		if (reverse_display_order) {
3844 			err = got_object_qid_alloc(&qid, &id);
3845 			if (err)
3846 				break;
3847 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
3848 			got_object_commit_close(commit);
3849 		} else {
3850 			if (one_line)
3851 				err = print_commit_oneline(commit, &id,
3852 				    repo, refs_idmap);
3853 			else
3854 				err = print_commit(commit, &id, repo, path,
3855 				    (show_changed_paths || show_diffstat) ?
3856 				    &changed_paths : NULL,
3857 				    show_diffstat ? &dsa : NULL, show_patch,
3858 				    diff_context, refs_idmap, NULL, NULL);
3859 			got_object_commit_close(commit);
3860 			if (err)
3861 				break;
3862 		}
3863 		if ((limit && --limit == 0) ||
3864 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
3865 			break;
3866 
3867 		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
3868 	}
3869 	if (reverse_display_order) {
3870 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
3871 			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
3872 			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
3873 
3874 			err = got_object_open_as_commit(&commit, repo,
3875 			    &qid->id);
3876 			if (err)
3877 				break;
3878 			if (show_changed_paths ||
3879 			    (show_diffstat && !show_patch)) {
3880 				err = get_changed_paths(&changed_paths, commit,
3881 				    repo, show_diffstat ? &dsa : NULL);
3882 				if (err)
3883 					break;
3884 			}
3885 			if (one_line)
3886 				err = print_commit_oneline(commit, &qid->id,
3887 				    repo, refs_idmap);
3888 			else
3889 				err = print_commit(commit, &qid->id, repo, path,
3890 				    (show_changed_paths || show_diffstat) ?
3891 				    &changed_paths : NULL,
3892 				    show_diffstat ? &dsa : NULL, show_patch,
3893 				    diff_context, refs_idmap, NULL, NULL);
3894 			got_object_commit_close(commit);
3895 			if (err)
3896 				break;
3897 			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
3898 		}
3899 	}
3900 done:
3901 	while (!STAILQ_EMPTY(&reversed_commits)) {
3902 		qid = STAILQ_FIRST(&reversed_commits);
3903 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
3904 		got_object_qid_free(qid);
3905 	}
3906 	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
3907 	if (search_pattern)
3908 		regfree(&regex);
3909 	got_commit_graph_close(graph);
3910 	return err;
3911 }
3912 
3913 __dead static void
3914 usage_log(void)
3915 {
3916 	fprintf(stderr, "usage: %s log [-bdPpRs] [-C number] [-c commit] "
3917 	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
3918 	    "[path]\n", getprogname());
3919 	exit(1);
3920 }
3921 
3922 static int
3923 get_default_log_limit(void)
3924 {
3925 	const char *got_default_log_limit;
3926 	long long n;
3927 	const char *errstr;
3928 
3929 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
3930 	if (got_default_log_limit == NULL)
3931 		return 0;
3932 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
3933 	if (errstr != NULL)
3934 		return 0;
3935 	return n;
3936 }
3937 
3938 static const struct got_error *
3939 cmd_log(int argc, char *argv[])
3940 {
3941 	const struct got_error *error;
3942 	struct got_repository *repo = NULL;
3943 	struct got_worktree *worktree = NULL;
3944 	struct got_object_id *start_id = NULL, *end_id = NULL;
3945 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
3946 	const char *start_commit = NULL, *end_commit = NULL;
3947 	const char *search_pattern = NULL;
3948 	int diff_context = -1, ch;
3949 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
3950 	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
3951 	const char *errstr;
3952 	struct got_reflist_head refs;
3953 	struct got_reflist_object_id_map *refs_idmap = NULL;
3954 	FILE *tmpfile = NULL;
3955 	int *pack_fds = NULL;
3956 
3957 	TAILQ_INIT(&refs);
3958 
3959 #ifndef PROFILE
3960 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
3961 	    NULL)
3962 	    == -1)
3963 		err(1, "pledge");
3964 #endif
3965 
3966 	limit = get_default_log_limit();
3967 
3968 	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:sx:")) != -1) {
3969 		switch (ch) {
3970 		case 'b':
3971 			log_branches = 1;
3972 			break;
3973 		case 'C':
3974 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
3975 			    &errstr);
3976 			if (errstr != NULL)
3977 				errx(1, "number of context lines is %s: %s",
3978 				    errstr, optarg);
3979 			break;
3980 		case 'c':
3981 			start_commit = optarg;
3982 			break;
3983 		case 'd':
3984 			show_diffstat = 1;
3985 			break;
3986 		case 'l':
3987 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
3988 			if (errstr != NULL)
3989 				errx(1, "number of commits is %s: %s",
3990 				    errstr, optarg);
3991 			break;
3992 		case 'P':
3993 			show_changed_paths = 1;
3994 			break;
3995 		case 'p':
3996 			show_patch = 1;
3997 			break;
3998 		case 'R':
3999 			reverse_display_order = 1;
4000 			break;
4001 		case 'r':
4002 			repo_path = realpath(optarg, NULL);
4003 			if (repo_path == NULL)
4004 				return got_error_from_errno2("realpath",
4005 				    optarg);
4006 			got_path_strip_trailing_slashes(repo_path);
4007 			break;
4008 		case 'S':
4009 			search_pattern = optarg;
4010 			break;
4011 		case 's':
4012 			one_line = 1;
4013 			break;
4014 		case 'x':
4015 			end_commit = optarg;
4016 			break;
4017 		default:
4018 			usage_log();
4019 			/* NOTREACHED */
4020 		}
4021 	}
4022 
4023 	argc -= optind;
4024 	argv += optind;
4025 
4026 	if (diff_context == -1)
4027 		diff_context = 3;
4028 	else if (!show_patch)
4029 		errx(1, "-C requires -p");
4030 
4031 	if (one_line && (show_patch || show_changed_paths || show_diffstat))
4032 		errx(1, "cannot use -s with -d, -p or -P");
4033 
4034 	cwd = getcwd(NULL, 0);
4035 	if (cwd == NULL) {
4036 		error = got_error_from_errno("getcwd");
4037 		goto done;
4038 	}
4039 
4040 	error = got_repo_pack_fds_open(&pack_fds);
4041 	if (error != NULL)
4042 		goto done;
4043 
4044 	if (repo_path == NULL) {
4045 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
4046 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4047 			goto done;
4048 		error = NULL;
4049 	}
4050 
4051 	if (argc == 1) {
4052 		if (worktree) {
4053 			error = got_worktree_resolve_path(&path, worktree,
4054 			    argv[0]);
4055 			if (error)
4056 				goto done;
4057 		} else {
4058 			path = strdup(argv[0]);
4059 			if (path == NULL) {
4060 				error = got_error_from_errno("strdup");
4061 				goto done;
4062 			}
4063 		}
4064 	} else if (argc != 0)
4065 		usage_log();
4066 
4067 	if (repo_path == NULL) {
4068 		repo_path = worktree ?
4069 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4070 	}
4071 	if (repo_path == NULL) {
4072 		error = got_error_from_errno("strdup");
4073 		goto done;
4074 	}
4075 
4076 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4077 	if (error != NULL)
4078 		goto done;
4079 
4080 	error = apply_unveil(got_repo_get_path(repo), 1,
4081 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4082 	if (error)
4083 		goto done;
4084 
4085 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4086 	if (error)
4087 		goto done;
4088 
4089 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4090 	if (error)
4091 		goto done;
4092 
4093 	if (start_commit == NULL) {
4094 		struct got_reference *head_ref;
4095 		struct got_commit_object *commit = NULL;
4096 		error = got_ref_open(&head_ref, repo,
4097 		    worktree ? got_worktree_get_head_ref_name(worktree)
4098 		    : GOT_REF_HEAD, 0);
4099 		if (error != NULL)
4100 			goto done;
4101 		error = got_ref_resolve(&start_id, repo, head_ref);
4102 		got_ref_close(head_ref);
4103 		if (error != NULL)
4104 			goto done;
4105 		error = got_object_open_as_commit(&commit, repo,
4106 		    start_id);
4107 		if (error != NULL)
4108 			goto done;
4109 		got_object_commit_close(commit);
4110 	} else {
4111 		error = got_repo_match_object_id(&start_id, NULL,
4112 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4113 		if (error != NULL)
4114 			goto done;
4115 	}
4116 	if (end_commit != NULL) {
4117 		error = got_repo_match_object_id(&end_id, NULL,
4118 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4119 		if (error != NULL)
4120 			goto done;
4121 	}
4122 
4123 	if (worktree) {
4124 		/*
4125 		 * If a path was specified on the command line it was resolved
4126 		 * to a path in the work tree above. Prepend the work tree's
4127 		 * path prefix to obtain the corresponding in-repository path.
4128 		 */
4129 		if (path) {
4130 			const char *prefix;
4131 			prefix = got_worktree_get_path_prefix(worktree);
4132 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4133 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4134 				error = got_error_from_errno("asprintf");
4135 				goto done;
4136 			}
4137 		}
4138 	} else
4139 		error = got_repo_map_path(&in_repo_path, repo,
4140 		    path ? path : "");
4141 	if (error != NULL)
4142 		goto done;
4143 	if (in_repo_path) {
4144 		free(path);
4145 		path = in_repo_path;
4146 	}
4147 
4148 	if (worktree) {
4149 		/* Release work tree lock. */
4150 		got_worktree_close(worktree);
4151 		worktree = NULL;
4152 	}
4153 
4154 	if (search_pattern && show_patch) {
4155 		tmpfile = got_opentemp();
4156 		if (tmpfile == NULL) {
4157 			error = got_error_from_errno("got_opentemp");
4158 			goto done;
4159 		}
4160 	}
4161 
4162 	error = print_commits(start_id, end_id, repo, path ? path : "",
4163 	    show_changed_paths, show_diffstat, show_patch, search_pattern,
4164 	    diff_context, limit, log_branches, reverse_display_order,
4165 	    refs_idmap, one_line, tmpfile);
4166 done:
4167 	free(path);
4168 	free(repo_path);
4169 	free(cwd);
4170 	free(start_id);
4171 	free(end_id);
4172 	if (worktree)
4173 		got_worktree_close(worktree);
4174 	if (repo) {
4175 		const struct got_error *close_err = got_repo_close(repo);
4176 		if (error == NULL)
4177 			error = close_err;
4178 	}
4179 	if (pack_fds) {
4180 		const struct got_error *pack_err =
4181 		    got_repo_pack_fds_close(pack_fds);
4182 		if (error == NULL)
4183 			error = pack_err;
4184 	}
4185 	if (refs_idmap)
4186 		got_reflist_object_id_map_free(refs_idmap);
4187 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4188 		error = got_error_from_errno("fclose");
4189 	got_ref_list_free(&refs);
4190 	return error;
4191 }
4192 
4193 __dead static void
4194 usage_diff(void)
4195 {
4196 	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
4197 	    "[-r repository-path] [object1 object2 | path ...]\n",
4198 	    getprogname());
4199 	exit(1);
4200 }
4201 
4202 struct print_diff_arg {
4203 	struct got_repository *repo;
4204 	struct got_worktree *worktree;
4205 	struct got_diffstat_cb_arg *diffstat;
4206 	int diff_context;
4207 	const char *id_str;
4208 	int header_shown;
4209 	int diff_staged;
4210 	enum got_diff_algorithm diff_algo;
4211 	int ignore_whitespace;
4212 	int force_text_diff;
4213 	FILE *f1;
4214 	FILE *f2;
4215 	FILE *outfile;
4216 };
4217 
4218 /*
4219  * Create a file which contains the target path of a symlink so we can feed
4220  * it as content to the diff engine.
4221  */
4222 static const struct got_error *
4223 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4224     const char *abspath)
4225 {
4226 	const struct got_error *err = NULL;
4227 	char target_path[PATH_MAX];
4228 	ssize_t target_len, outlen;
4229 
4230 	*fd = -1;
4231 
4232 	if (dirfd != -1) {
4233 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4234 		if (target_len == -1)
4235 			return got_error_from_errno2("readlinkat", abspath);
4236 	} else {
4237 		target_len = readlink(abspath, target_path, PATH_MAX);
4238 		if (target_len == -1)
4239 			return got_error_from_errno2("readlink", abspath);
4240 	}
4241 
4242 	*fd = got_opentempfd();
4243 	if (*fd == -1)
4244 		return got_error_from_errno("got_opentempfd");
4245 
4246 	outlen = write(*fd, target_path, target_len);
4247 	if (outlen == -1) {
4248 		err = got_error_from_errno("got_opentempfd");
4249 		goto done;
4250 	}
4251 
4252 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4253 		err = got_error_from_errno2("lseek", abspath);
4254 		goto done;
4255 	}
4256 done:
4257 	if (err) {
4258 		close(*fd);
4259 		*fd = -1;
4260 	}
4261 	return err;
4262 }
4263 
4264 static const struct got_error *
4265 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4266     const char *path, struct got_object_id *blob_id,
4267     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4268     int dirfd, const char *de_name)
4269 {
4270 	struct print_diff_arg *a = arg;
4271 	const struct got_error *err = NULL;
4272 	struct got_blob_object *blob1 = NULL;
4273 	int fd = -1, fd1 = -1, fd2 = -1;
4274 	FILE *f2 = NULL;
4275 	char *abspath = NULL, *label1 = NULL;
4276 	struct stat sb;
4277 	off_t size1 = 0;
4278 	int f2_exists = 0;
4279 
4280 	memset(&sb, 0, sizeof(sb));
4281 
4282 	if (a->diff_staged) {
4283 		if (staged_status != GOT_STATUS_MODIFY &&
4284 		    staged_status != GOT_STATUS_ADD &&
4285 		    staged_status != GOT_STATUS_DELETE)
4286 			return NULL;
4287 	} else {
4288 		if (staged_status == GOT_STATUS_DELETE)
4289 			return NULL;
4290 		if (status == GOT_STATUS_NONEXISTENT)
4291 			return got_error_set_errno(ENOENT, path);
4292 		if (status != GOT_STATUS_MODIFY &&
4293 		    status != GOT_STATUS_ADD &&
4294 		    status != GOT_STATUS_DELETE &&
4295 		    status != GOT_STATUS_CONFLICT)
4296 			return NULL;
4297 	}
4298 
4299 	err = got_opentemp_truncate(a->f1);
4300 	if (err)
4301 		return got_error_from_errno("got_opentemp_truncate");
4302 	err = got_opentemp_truncate(a->f2);
4303 	if (err)
4304 		return got_error_from_errno("got_opentemp_truncate");
4305 
4306 	if (!a->header_shown) {
4307 		if (fprintf(a->outfile, "diff %s%s\n",
4308 		    a->diff_staged ? "-s " : "",
4309 		    got_worktree_get_root_path(a->worktree)) < 0) {
4310 			err = got_error_from_errno("fprintf");
4311 			goto done;
4312 		}
4313 		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
4314 			err = got_error_from_errno("fprintf");
4315 			goto done;
4316 		}
4317 		if (fprintf(a->outfile, "path + %s%s\n",
4318 		    got_worktree_get_root_path(a->worktree),
4319 		    a->diff_staged ? " (staged changes)" : "") < 0) {
4320 			err = got_error_from_errno("fprintf");
4321 			goto done;
4322 		}
4323 		a->header_shown = 1;
4324 	}
4325 
4326 	if (a->diff_staged) {
4327 		const char *label1 = NULL, *label2 = NULL;
4328 		switch (staged_status) {
4329 		case GOT_STATUS_MODIFY:
4330 			label1 = path;
4331 			label2 = path;
4332 			break;
4333 		case GOT_STATUS_ADD:
4334 			label2 = path;
4335 			break;
4336 		case GOT_STATUS_DELETE:
4337 			label1 = path;
4338 			break;
4339 		default:
4340 			return got_error(GOT_ERR_FILE_STATUS);
4341 		}
4342 		fd1 = got_opentempfd();
4343 		if (fd1 == -1) {
4344 			err = got_error_from_errno("got_opentempfd");
4345 			goto done;
4346 		}
4347 		fd2 = got_opentempfd();
4348 		if (fd2 == -1) {
4349 			err = got_error_from_errno("got_opentempfd");
4350 			goto done;
4351 		}
4352 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4353 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4354 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4355 		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
4356 		goto done;
4357 	}
4358 
4359 	fd1 = got_opentempfd();
4360 	if (fd1 == -1) {
4361 		err = got_error_from_errno("got_opentempfd");
4362 		goto done;
4363 	}
4364 
4365 	if (staged_status == GOT_STATUS_ADD ||
4366 	    staged_status == GOT_STATUS_MODIFY) {
4367 		char *id_str;
4368 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4369 		    8192, fd1);
4370 		if (err)
4371 			goto done;
4372 		err = got_object_id_str(&id_str, staged_blob_id);
4373 		if (err)
4374 			goto done;
4375 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4376 			err = got_error_from_errno("asprintf");
4377 			free(id_str);
4378 			goto done;
4379 		}
4380 		free(id_str);
4381 	} else if (status != GOT_STATUS_ADD) {
4382 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
4383 		    fd1);
4384 		if (err)
4385 			goto done;
4386 	}
4387 
4388 	if (status != GOT_STATUS_DELETE) {
4389 		if (asprintf(&abspath, "%s/%s",
4390 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4391 			err = got_error_from_errno("asprintf");
4392 			goto done;
4393 		}
4394 
4395 		if (dirfd != -1) {
4396 			fd = openat(dirfd, de_name,
4397 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4398 			if (fd == -1) {
4399 				if (!got_err_open_nofollow_on_symlink()) {
4400 					err = got_error_from_errno2("openat",
4401 					    abspath);
4402 					goto done;
4403 				}
4404 				err = get_symlink_target_file(&fd, dirfd,
4405 				    de_name, abspath);
4406 				if (err)
4407 					goto done;
4408 			}
4409 		} else {
4410 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4411 			if (fd == -1) {
4412 				if (!got_err_open_nofollow_on_symlink()) {
4413 					err = got_error_from_errno2("open",
4414 					    abspath);
4415 					goto done;
4416 				}
4417 				err = get_symlink_target_file(&fd, dirfd,
4418 				    de_name, abspath);
4419 				if (err)
4420 					goto done;
4421 			}
4422 		}
4423 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
4424 			err = got_error_from_errno2("fstatat", abspath);
4425 			goto done;
4426 		}
4427 		f2 = fdopen(fd, "r");
4428 		if (f2 == NULL) {
4429 			err = got_error_from_errno2("fdopen", abspath);
4430 			goto done;
4431 		}
4432 		fd = -1;
4433 		f2_exists = 1;
4434 	}
4435 
4436 	if (blob1) {
4437 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
4438 		    a->f1, blob1);
4439 		if (err)
4440 			goto done;
4441 	}
4442 
4443 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
4444 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
4445 	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
4446 done:
4447 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
4448 		err = got_error_from_errno("close");
4449 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
4450 		err = got_error_from_errno("close");
4451 	if (blob1)
4452 		got_object_blob_close(blob1);
4453 	if (fd != -1 && close(fd) == -1 && err == NULL)
4454 		err = got_error_from_errno("close");
4455 	if (f2 && fclose(f2) == EOF && err == NULL)
4456 		err = got_error_from_errno("fclose");
4457 	free(abspath);
4458 	return err;
4459 }
4460 
4461 static const struct got_error *
4462 cmd_diff(int argc, char *argv[])
4463 {
4464 	const struct got_error *error;
4465 	struct got_repository *repo = NULL;
4466 	struct got_worktree *worktree = NULL;
4467 	char *cwd = NULL, *repo_path = NULL;
4468 	const char *commit_args[2] = { NULL, NULL };
4469 	int ncommit_args = 0;
4470 	struct got_object_id *ids[2] = { NULL, NULL };
4471 	char *labels[2] = { NULL, NULL };
4472 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
4473 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
4474 	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
4475 	const char *errstr;
4476 	struct got_reflist_head refs;
4477 	struct got_pathlist_head diffstat_paths, paths;
4478 	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
4479 	int fd1 = -1, fd2 = -1;
4480 	int *pack_fds = NULL;
4481 	struct got_diffstat_cb_arg dsa;
4482 
4483 	memset(&dsa, 0, sizeof(dsa));
4484 
4485 	TAILQ_INIT(&refs);
4486 	TAILQ_INIT(&paths);
4487 	TAILQ_INIT(&diffstat_paths);
4488 
4489 #ifndef PROFILE
4490 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4491 	    NULL) == -1)
4492 		err(1, "pledge");
4493 #endif
4494 
4495 	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
4496 		switch (ch) {
4497 		case 'a':
4498 			force_text_diff = 1;
4499 			break;
4500 		case 'C':
4501 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4502 			    &errstr);
4503 			if (errstr != NULL)
4504 				errx(1, "number of context lines is %s: %s",
4505 				    errstr, optarg);
4506 			break;
4507 		case 'c':
4508 			if (ncommit_args >= 2)
4509 				errx(1, "too many -c options used");
4510 			commit_args[ncommit_args++] = optarg;
4511 			break;
4512 		case 'd':
4513 			show_diffstat = 1;
4514 			break;
4515 		case 'P':
4516 			force_path = 1;
4517 			break;
4518 		case 'r':
4519 			repo_path = realpath(optarg, NULL);
4520 			if (repo_path == NULL)
4521 				return got_error_from_errno2("realpath",
4522 				    optarg);
4523 			got_path_strip_trailing_slashes(repo_path);
4524 			rflag = 1;
4525 			break;
4526 		case 's':
4527 			diff_staged = 1;
4528 			break;
4529 		case 'w':
4530 			ignore_whitespace = 1;
4531 			break;
4532 		default:
4533 			usage_diff();
4534 			/* NOTREACHED */
4535 		}
4536 	}
4537 
4538 	argc -= optind;
4539 	argv += optind;
4540 
4541 	cwd = getcwd(NULL, 0);
4542 	if (cwd == NULL) {
4543 		error = got_error_from_errno("getcwd");
4544 		goto done;
4545 	}
4546 
4547 	error = got_repo_pack_fds_open(&pack_fds);
4548 	if (error != NULL)
4549 		goto done;
4550 
4551 	if (repo_path == NULL) {
4552 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
4553 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4554 			goto done;
4555 		else
4556 			error = NULL;
4557 		if (worktree) {
4558 			repo_path =
4559 			    strdup(got_worktree_get_repo_path(worktree));
4560 			if (repo_path == NULL) {
4561 				error = got_error_from_errno("strdup");
4562 				goto done;
4563 			}
4564 		} else {
4565 			repo_path = strdup(cwd);
4566 			if (repo_path == NULL) {
4567 				error = got_error_from_errno("strdup");
4568 				goto done;
4569 			}
4570 		}
4571 	}
4572 
4573 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4574 	free(repo_path);
4575 	if (error != NULL)
4576 		goto done;
4577 
4578 	if (show_diffstat) {
4579 		dsa.paths = &diffstat_paths;
4580 		dsa.force_text = force_text_diff;
4581 		dsa.ignore_ws = ignore_whitespace;
4582 		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
4583 	}
4584 
4585 	if (rflag || worktree == NULL || ncommit_args > 0) {
4586 		if (force_path) {
4587 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4588 			    "-P option can only be used when diffing "
4589 			    "a work tree");
4590 			goto done;
4591 		}
4592 		if (diff_staged) {
4593 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4594 			    "-s option can only be used when diffing "
4595 			    "a work tree");
4596 			goto done;
4597 		}
4598 	}
4599 
4600 	error = apply_unveil(got_repo_get_path(repo), 1,
4601 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4602 	if (error)
4603 		goto done;
4604 
4605 	if ((!force_path && argc == 2) || ncommit_args > 0) {
4606 		int obj_type = (ncommit_args > 0 ?
4607 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
4608 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
4609 		    NULL);
4610 		if (error)
4611 			goto done;
4612 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
4613 			const char *arg;
4614 			if (ncommit_args > 0)
4615 				arg = commit_args[i];
4616 			else
4617 				arg = argv[i];
4618 			error = got_repo_match_object_id(&ids[i], &labels[i],
4619 			    arg, obj_type, &refs, repo);
4620 			if (error) {
4621 				if (error->code != GOT_ERR_NOT_REF &&
4622 				    error->code != GOT_ERR_NO_OBJ)
4623 					goto done;
4624 				if (ncommit_args > 0)
4625 					goto done;
4626 				error = NULL;
4627 				break;
4628 			}
4629 		}
4630 	}
4631 
4632 	f1 = got_opentemp();
4633 	if (f1 == NULL) {
4634 		error = got_error_from_errno("got_opentemp");
4635 		goto done;
4636 	}
4637 
4638 	f2 = got_opentemp();
4639 	if (f2 == NULL) {
4640 		error = got_error_from_errno("got_opentemp");
4641 		goto done;
4642 	}
4643 
4644 	outfile = got_opentemp();
4645 	if (outfile == NULL) {
4646 		error = got_error_from_errno("got_opentemp");
4647 		goto done;
4648 	}
4649 
4650 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
4651 		struct print_diff_arg arg;
4652 		char *id_str;
4653 
4654 		if (worktree == NULL) {
4655 			if (argc == 2 && ids[0] == NULL) {
4656 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
4657 				goto done;
4658 			} else if (argc == 2 && ids[1] == NULL) {
4659 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
4660 				goto done;
4661 			} else if (argc > 0) {
4662 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
4663 				    "%s", "specified paths cannot be resolved");
4664 				goto done;
4665 			} else {
4666 				error = got_error(GOT_ERR_NOT_WORKTREE);
4667 				goto done;
4668 			}
4669 		}
4670 
4671 		error = get_worktree_paths_from_argv(&paths, argc, argv,
4672 		    worktree);
4673 		if (error)
4674 			goto done;
4675 
4676 		error = got_object_id_str(&id_str,
4677 		    got_worktree_get_base_commit_id(worktree));
4678 		if (error)
4679 			goto done;
4680 		arg.repo = repo;
4681 		arg.worktree = worktree;
4682 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
4683 		arg.diff_context = diff_context;
4684 		arg.id_str = id_str;
4685 		arg.header_shown = 0;
4686 		arg.diff_staged = diff_staged;
4687 		arg.ignore_whitespace = ignore_whitespace;
4688 		arg.force_text_diff = force_text_diff;
4689 		arg.diffstat = show_diffstat ? &dsa : NULL;
4690 		arg.f1 = f1;
4691 		arg.f2 = f2;
4692 		arg.outfile = outfile;
4693 
4694 		error = got_worktree_status(worktree, &paths, repo, 0,
4695 		    print_diff, &arg, check_cancelled, NULL);
4696 		free(id_str);
4697 		if (error)
4698 			goto done;
4699 
4700 		if (show_diffstat && dsa.nfiles > 0) {
4701 			char *header;
4702 
4703 			if (asprintf(&header, "diffstat %s%s",
4704 			    diff_staged ? "-s " : "",
4705 			    got_worktree_get_root_path(worktree)) == -1) {
4706 				error = got_error_from_errno("asprintf");
4707 				goto done;
4708 			}
4709 
4710 			error = print_diffstat(&dsa, header);
4711 			free(header);
4712 			if (error)
4713 				goto done;
4714 		}
4715 
4716 		error = printfile(outfile);
4717 		goto done;
4718 	}
4719 
4720 	if (ncommit_args == 1) {
4721 		struct got_commit_object *commit;
4722 		error = got_object_open_as_commit(&commit, repo, ids[0]);
4723 		if (error)
4724 			goto done;
4725 
4726 		labels[1] = labels[0];
4727 		ids[1] = ids[0];
4728 		if (got_object_commit_get_nparents(commit) > 0) {
4729 			const struct got_object_id_queue *pids;
4730 			struct got_object_qid *pid;
4731 			pids = got_object_commit_get_parent_ids(commit);
4732 			pid = STAILQ_FIRST(pids);
4733 			ids[0] = got_object_id_dup(&pid->id);
4734 			if (ids[0] == NULL) {
4735 				error = got_error_from_errno(
4736 				    "got_object_id_dup");
4737 				got_object_commit_close(commit);
4738 				goto done;
4739 			}
4740 			error = got_object_id_str(&labels[0], ids[0]);
4741 			if (error) {
4742 				got_object_commit_close(commit);
4743 				goto done;
4744 			}
4745 		} else {
4746 			ids[0] = NULL;
4747 			labels[0] = strdup("/dev/null");
4748 			if (labels[0] == NULL) {
4749 				error = got_error_from_errno("strdup");
4750 				got_object_commit_close(commit);
4751 				goto done;
4752 			}
4753 		}
4754 
4755 		got_object_commit_close(commit);
4756 	}
4757 
4758 	if (ncommit_args == 0 && argc > 2) {
4759 		error = got_error_msg(GOT_ERR_BAD_PATH,
4760 		    "path arguments cannot be used when diffing two objects");
4761 		goto done;
4762 	}
4763 
4764 	if (ids[0]) {
4765 		error = got_object_get_type(&type1, repo, ids[0]);
4766 		if (error)
4767 			goto done;
4768 	}
4769 
4770 	error = got_object_get_type(&type2, repo, ids[1]);
4771 	if (error)
4772 		goto done;
4773 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
4774 		error = got_error(GOT_ERR_OBJ_TYPE);
4775 		goto done;
4776 	}
4777 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
4778 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
4779 		    "path arguments cannot be used when diffing blobs");
4780 		goto done;
4781 	}
4782 
4783 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
4784 		char *in_repo_path;
4785 		struct got_pathlist_entry *new;
4786 		if (worktree) {
4787 			const char *prefix;
4788 			char *p;
4789 			error = got_worktree_resolve_path(&p, worktree,
4790 			    argv[i]);
4791 			if (error)
4792 				goto done;
4793 			prefix = got_worktree_get_path_prefix(worktree);
4794 			while (prefix[0] == '/')
4795 				prefix++;
4796 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4797 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
4798 			    p) == -1) {
4799 				error = got_error_from_errno("asprintf");
4800 				free(p);
4801 				goto done;
4802 			}
4803 			free(p);
4804 		} else {
4805 			char *mapped_path, *s;
4806 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
4807 			if (error)
4808 				goto done;
4809 			s = mapped_path;
4810 			while (s[0] == '/')
4811 				s++;
4812 			in_repo_path = strdup(s);
4813 			if (in_repo_path == NULL) {
4814 				error = got_error_from_errno("asprintf");
4815 				free(mapped_path);
4816 				goto done;
4817 			}
4818 			free(mapped_path);
4819 
4820 		}
4821 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
4822 		if (error || new == NULL /* duplicate */)
4823 			free(in_repo_path);
4824 		if (error)
4825 			goto done;
4826 	}
4827 
4828 	if (worktree) {
4829 		/* Release work tree lock. */
4830 		got_worktree_close(worktree);
4831 		worktree = NULL;
4832 	}
4833 
4834 	fd1 = got_opentempfd();
4835 	if (fd1 == -1) {
4836 		error = got_error_from_errno("got_opentempfd");
4837 		goto done;
4838 	}
4839 
4840 	fd2 = got_opentempfd();
4841 	if (fd2 == -1) {
4842 		error = got_error_from_errno("got_opentempfd");
4843 		goto done;
4844 	}
4845 
4846 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
4847 	case GOT_OBJ_TYPE_BLOB:
4848 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
4849 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
4850 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
4851 		    ignore_whitespace, force_text_diff,
4852 		    show_diffstat ? &dsa : NULL, repo, outfile);
4853 		break;
4854 	case GOT_OBJ_TYPE_TREE:
4855 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
4856 		    ids[0], ids[1], &paths, "", "",
4857 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
4858 		    ignore_whitespace, force_text_diff,
4859 		    show_diffstat ? &dsa : NULL, repo, outfile);
4860 		break;
4861 	case GOT_OBJ_TYPE_COMMIT:
4862 		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
4863 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
4864 		    fd1, fd2, ids[0], ids[1], &paths,
4865 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
4866 		    ignore_whitespace, force_text_diff,
4867 		    show_diffstat ? &dsa : NULL, repo, outfile);
4868 		break;
4869 	default:
4870 		error = got_error(GOT_ERR_OBJ_TYPE);
4871 	}
4872 	if (error)
4873 		goto done;
4874 
4875 	if (show_diffstat && dsa.nfiles > 0) {
4876 		char *header = NULL;
4877 
4878 		if (asprintf(&header, "diffstat %s %s",
4879 		    labels[0], labels[1]) == -1) {
4880 			error = got_error_from_errno("asprintf");
4881 			goto done;
4882 		}
4883 
4884 		error = print_diffstat(&dsa, header);
4885 		free(header);
4886 		if (error)
4887 			goto done;
4888 	}
4889 
4890 	error = printfile(outfile);
4891 
4892 done:
4893 	free(labels[0]);
4894 	free(labels[1]);
4895 	free(ids[0]);
4896 	free(ids[1]);
4897 	if (worktree)
4898 		got_worktree_close(worktree);
4899 	if (repo) {
4900 		const struct got_error *close_err = got_repo_close(repo);
4901 		if (error == NULL)
4902 			error = close_err;
4903 	}
4904 	if (pack_fds) {
4905 		const struct got_error *pack_err =
4906 		    got_repo_pack_fds_close(pack_fds);
4907 		if (error == NULL)
4908 			error = pack_err;
4909 	}
4910 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
4911 	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
4912 	got_ref_list_free(&refs);
4913 	if (outfile && fclose(outfile) == EOF && error == NULL)
4914 		error = got_error_from_errno("fclose");
4915 	if (f1 && fclose(f1) == EOF && error == NULL)
4916 		error = got_error_from_errno("fclose");
4917 	if (f2 && fclose(f2) == EOF && error == NULL)
4918 		error = got_error_from_errno("fclose");
4919 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
4920 		error = got_error_from_errno("close");
4921 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
4922 		error = got_error_from_errno("close");
4923 	return error;
4924 }
4925 
4926 __dead static void
4927 usage_blame(void)
4928 {
4929 	fprintf(stderr,
4930 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
4931 	    getprogname());
4932 	exit(1);
4933 }
4934 
4935 struct blame_line {
4936 	int annotated;
4937 	char *id_str;
4938 	char *committer;
4939 	char datebuf[11]; /* YYYY-MM-DD + NUL */
4940 };
4941 
4942 struct blame_cb_args {
4943 	struct blame_line *lines;
4944 	int nlines;
4945 	int nlines_prec;
4946 	int lineno_cur;
4947 	off_t *line_offsets;
4948 	FILE *f;
4949 	struct got_repository *repo;
4950 };
4951 
4952 static const struct got_error *
4953 blame_cb(void *arg, int nlines, int lineno,
4954     struct got_commit_object *commit, struct got_object_id *id)
4955 {
4956 	const struct got_error *err = NULL;
4957 	struct blame_cb_args *a = arg;
4958 	struct blame_line *bline;
4959 	char *line = NULL;
4960 	size_t linesize = 0;
4961 	off_t offset;
4962 	struct tm tm;
4963 	time_t committer_time;
4964 
4965 	if (nlines != a->nlines ||
4966 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
4967 		return got_error(GOT_ERR_RANGE);
4968 
4969 	if (sigint_received)
4970 		return got_error(GOT_ERR_ITER_COMPLETED);
4971 
4972 	if (lineno == -1)
4973 		return NULL; /* no change in this commit */
4974 
4975 	/* Annotate this line. */
4976 	bline = &a->lines[lineno - 1];
4977 	if (bline->annotated)
4978 		return NULL;
4979 	err = got_object_id_str(&bline->id_str, id);
4980 	if (err)
4981 		return err;
4982 
4983 	bline->committer = strdup(got_object_commit_get_committer(commit));
4984 	if (bline->committer == NULL) {
4985 		err = got_error_from_errno("strdup");
4986 		goto done;
4987 	}
4988 
4989 	committer_time = got_object_commit_get_committer_time(commit);
4990 	if (gmtime_r(&committer_time, &tm) == NULL)
4991 		return got_error_from_errno("gmtime_r");
4992 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%F", &tm) == 0) {
4993 		err = got_error(GOT_ERR_NO_SPACE);
4994 		goto done;
4995 	}
4996 	bline->annotated = 1;
4997 
4998 	/* Print lines annotated so far. */
4999 	bline = &a->lines[a->lineno_cur - 1];
5000 	if (!bline->annotated)
5001 		goto done;
5002 
5003 	offset = a->line_offsets[a->lineno_cur - 1];
5004 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5005 		err = got_error_from_errno("fseeko");
5006 		goto done;
5007 	}
5008 
5009 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5010 		char *smallerthan, *at, *nl, *committer;
5011 		size_t len;
5012 
5013 		if (getline(&line, &linesize, a->f) == -1) {
5014 			if (ferror(a->f))
5015 				err = got_error_from_errno("getline");
5016 			break;
5017 		}
5018 
5019 		committer = bline->committer;
5020 		smallerthan = strchr(committer, '<');
5021 		if (smallerthan && smallerthan[1] != '\0')
5022 			committer = smallerthan + 1;
5023 		at = strchr(committer, '@');
5024 		if (at)
5025 			*at = '\0';
5026 		len = strlen(committer);
5027 		if (len >= 9)
5028 			committer[8] = '\0';
5029 
5030 		nl = strchr(line, '\n');
5031 		if (nl)
5032 			*nl = '\0';
5033 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5034 		    bline->id_str, bline->datebuf, committer, line);
5035 
5036 		a->lineno_cur++;
5037 		bline = &a->lines[a->lineno_cur - 1];
5038 	}
5039 done:
5040 	free(line);
5041 	return err;
5042 }
5043 
5044 static const struct got_error *
5045 cmd_blame(int argc, char *argv[])
5046 {
5047 	const struct got_error *error;
5048 	struct got_repository *repo = NULL;
5049 	struct got_worktree *worktree = NULL;
5050 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5051 	char *link_target = NULL;
5052 	struct got_object_id *obj_id = NULL;
5053 	struct got_object_id *commit_id = NULL;
5054 	struct got_commit_object *commit = NULL;
5055 	struct got_blob_object *blob = NULL;
5056 	char *commit_id_str = NULL;
5057 	struct blame_cb_args bca;
5058 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5059 	off_t filesize;
5060 	int *pack_fds = NULL;
5061 	FILE *f1 = NULL, *f2 = NULL;
5062 
5063 	fd1 = got_opentempfd();
5064 	if (fd1 == -1)
5065 		return got_error_from_errno("got_opentempfd");
5066 
5067 	memset(&bca, 0, sizeof(bca));
5068 
5069 #ifndef PROFILE
5070 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5071 	    NULL) == -1)
5072 		err(1, "pledge");
5073 #endif
5074 
5075 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5076 		switch (ch) {
5077 		case 'c':
5078 			commit_id_str = optarg;
5079 			break;
5080 		case 'r':
5081 			repo_path = realpath(optarg, NULL);
5082 			if (repo_path == NULL)
5083 				return got_error_from_errno2("realpath",
5084 				    optarg);
5085 			got_path_strip_trailing_slashes(repo_path);
5086 			break;
5087 		default:
5088 			usage_blame();
5089 			/* NOTREACHED */
5090 		}
5091 	}
5092 
5093 	argc -= optind;
5094 	argv += optind;
5095 
5096 	if (argc == 1)
5097 		path = argv[0];
5098 	else
5099 		usage_blame();
5100 
5101 	cwd = getcwd(NULL, 0);
5102 	if (cwd == NULL) {
5103 		error = got_error_from_errno("getcwd");
5104 		goto done;
5105 	}
5106 
5107 	error = got_repo_pack_fds_open(&pack_fds);
5108 	if (error != NULL)
5109 		goto done;
5110 
5111 	if (repo_path == NULL) {
5112 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
5113 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5114 			goto done;
5115 		else
5116 			error = NULL;
5117 		if (worktree) {
5118 			repo_path =
5119 			    strdup(got_worktree_get_repo_path(worktree));
5120 			if (repo_path == NULL) {
5121 				error = got_error_from_errno("strdup");
5122 				if (error)
5123 					goto done;
5124 			}
5125 		} else {
5126 			repo_path = strdup(cwd);
5127 			if (repo_path == NULL) {
5128 				error = got_error_from_errno("strdup");
5129 				goto done;
5130 			}
5131 		}
5132 	}
5133 
5134 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5135 	if (error != NULL)
5136 		goto done;
5137 
5138 	if (worktree) {
5139 		const char *prefix = got_worktree_get_path_prefix(worktree);
5140 		char *p;
5141 
5142 		error = got_worktree_resolve_path(&p, worktree, path);
5143 		if (error)
5144 			goto done;
5145 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5146 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5147 		    p) == -1) {
5148 			error = got_error_from_errno("asprintf");
5149 			free(p);
5150 			goto done;
5151 		}
5152 		free(p);
5153 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5154 	} else {
5155 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5156 		if (error)
5157 			goto done;
5158 		error = got_repo_map_path(&in_repo_path, repo, path);
5159 	}
5160 	if (error)
5161 		goto done;
5162 
5163 	if (commit_id_str == NULL) {
5164 		struct got_reference *head_ref;
5165 		error = got_ref_open(&head_ref, repo, worktree ?
5166 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5167 		if (error != NULL)
5168 			goto done;
5169 		error = got_ref_resolve(&commit_id, repo, head_ref);
5170 		got_ref_close(head_ref);
5171 		if (error != NULL)
5172 			goto done;
5173 	} else {
5174 		struct got_reflist_head refs;
5175 		TAILQ_INIT(&refs);
5176 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5177 		    NULL);
5178 		if (error)
5179 			goto done;
5180 		error = got_repo_match_object_id(&commit_id, NULL,
5181 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5182 		got_ref_list_free(&refs);
5183 		if (error)
5184 			goto done;
5185 	}
5186 
5187 	if (worktree) {
5188 		/* Release work tree lock. */
5189 		got_worktree_close(worktree);
5190 		worktree = NULL;
5191 	}
5192 
5193 	error = got_object_open_as_commit(&commit, repo, commit_id);
5194 	if (error)
5195 		goto done;
5196 
5197 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5198 	    commit, repo);
5199 	if (error)
5200 		goto done;
5201 
5202 	error = got_object_id_by_path(&obj_id, repo, commit,
5203 	    link_target ? link_target : in_repo_path);
5204 	if (error)
5205 		goto done;
5206 
5207 	error = got_object_get_type(&obj_type, repo, obj_id);
5208 	if (error)
5209 		goto done;
5210 
5211 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5212 		error = got_error_path(link_target ? link_target : in_repo_path,
5213 		    GOT_ERR_OBJ_TYPE);
5214 		goto done;
5215 	}
5216 
5217 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5218 	if (error)
5219 		goto done;
5220 	bca.f = got_opentemp();
5221 	if (bca.f == NULL) {
5222 		error = got_error_from_errno("got_opentemp");
5223 		goto done;
5224 	}
5225 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5226 	    &bca.line_offsets, bca.f, blob);
5227 	if (error || bca.nlines == 0)
5228 		goto done;
5229 
5230 	/* Don't include \n at EOF in the blame line count. */
5231 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5232 		bca.nlines--;
5233 
5234 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5235 	if (bca.lines == NULL) {
5236 		error = got_error_from_errno("calloc");
5237 		goto done;
5238 	}
5239 	bca.lineno_cur = 1;
5240 	bca.nlines_prec = 0;
5241 	i = bca.nlines;
5242 	while (i > 0) {
5243 		i /= 10;
5244 		bca.nlines_prec++;
5245 	}
5246 	bca.repo = repo;
5247 
5248 	fd2 = got_opentempfd();
5249 	if (fd2 == -1) {
5250 		error = got_error_from_errno("got_opentempfd");
5251 		goto done;
5252 	}
5253 	fd3 = got_opentempfd();
5254 	if (fd3 == -1) {
5255 		error = got_error_from_errno("got_opentempfd");
5256 		goto done;
5257 	}
5258 	f1 = got_opentemp();
5259 	if (f1 == NULL) {
5260 		error = got_error_from_errno("got_opentemp");
5261 		goto done;
5262 	}
5263 	f2 = got_opentemp();
5264 	if (f2 == NULL) {
5265 		error = got_error_from_errno("got_opentemp");
5266 		goto done;
5267 	}
5268 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5269 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5270 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5271 done:
5272 	free(in_repo_path);
5273 	free(link_target);
5274 	free(repo_path);
5275 	free(cwd);
5276 	free(commit_id);
5277 	free(obj_id);
5278 	if (commit)
5279 		got_object_commit_close(commit);
5280 
5281 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5282 		error = got_error_from_errno("close");
5283 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5284 		error = got_error_from_errno("close");
5285 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5286 		error = got_error_from_errno("close");
5287 	if (f1 && fclose(f1) == EOF && error == NULL)
5288 		error = got_error_from_errno("fclose");
5289 	if (f2 && fclose(f2) == EOF && error == NULL)
5290 		error = got_error_from_errno("fclose");
5291 
5292 	if (blob)
5293 		got_object_blob_close(blob);
5294 	if (worktree)
5295 		got_worktree_close(worktree);
5296 	if (repo) {
5297 		const struct got_error *close_err = got_repo_close(repo);
5298 		if (error == NULL)
5299 			error = close_err;
5300 	}
5301 	if (pack_fds) {
5302 		const struct got_error *pack_err =
5303 		    got_repo_pack_fds_close(pack_fds);
5304 		if (error == NULL)
5305 			error = pack_err;
5306 	}
5307 	if (bca.lines) {
5308 		for (i = 0; i < bca.nlines; i++) {
5309 			struct blame_line *bline = &bca.lines[i];
5310 			free(bline->id_str);
5311 			free(bline->committer);
5312 		}
5313 		free(bca.lines);
5314 	}
5315 	free(bca.line_offsets);
5316 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5317 		error = got_error_from_errno("fclose");
5318 	return error;
5319 }
5320 
5321 __dead static void
5322 usage_tree(void)
5323 {
5324 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
5325 	    "[path]\n", getprogname());
5326 	exit(1);
5327 }
5328 
5329 static const struct got_error *
5330 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5331     const char *root_path, struct got_repository *repo)
5332 {
5333 	const struct got_error *err = NULL;
5334 	int is_root_path = (strcmp(path, root_path) == 0);
5335 	const char *modestr = "";
5336 	mode_t mode = got_tree_entry_get_mode(te);
5337 	char *link_target = NULL;
5338 
5339 	path += strlen(root_path);
5340 	while (path[0] == '/')
5341 		path++;
5342 
5343 	if (got_object_tree_entry_is_submodule(te))
5344 		modestr = "$";
5345 	else if (S_ISLNK(mode)) {
5346 		int i;
5347 
5348 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5349 		if (err)
5350 			return err;
5351 		for (i = 0; link_target[i] != '\0'; i++) {
5352 			if (!isprint((unsigned char)link_target[i]))
5353 				link_target[i] = '?';
5354 		}
5355 
5356 		modestr = "@";
5357 	}
5358 	else if (S_ISDIR(mode))
5359 		modestr = "/";
5360 	else if (mode & S_IXUSR)
5361 		modestr = "*";
5362 
5363 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5364 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5365 	    link_target ? " -> ": "", link_target ? link_target : "");
5366 
5367 	free(link_target);
5368 	return NULL;
5369 }
5370 
5371 static const struct got_error *
5372 print_tree(const char *path, struct got_commit_object *commit,
5373     int show_ids, int recurse, const char *root_path,
5374     struct got_repository *repo)
5375 {
5376 	const struct got_error *err = NULL;
5377 	struct got_object_id *tree_id = NULL;
5378 	struct got_tree_object *tree = NULL;
5379 	int nentries, i;
5380 
5381 	err = got_object_id_by_path(&tree_id, repo, commit, path);
5382 	if (err)
5383 		goto done;
5384 
5385 	err = got_object_open_as_tree(&tree, repo, tree_id);
5386 	if (err)
5387 		goto done;
5388 	nentries = got_object_tree_get_nentries(tree);
5389 	for (i = 0; i < nentries; i++) {
5390 		struct got_tree_entry *te;
5391 		char *id = NULL;
5392 
5393 		if (sigint_received || sigpipe_received)
5394 			break;
5395 
5396 		te = got_object_tree_get_entry(tree, i);
5397 		if (show_ids) {
5398 			char *id_str;
5399 			err = got_object_id_str(&id_str,
5400 			    got_tree_entry_get_id(te));
5401 			if (err)
5402 				goto done;
5403 			if (asprintf(&id, "%s ", id_str) == -1) {
5404 				err = got_error_from_errno("asprintf");
5405 				free(id_str);
5406 				goto done;
5407 			}
5408 			free(id_str);
5409 		}
5410 		err = print_entry(te, id, path, root_path, repo);
5411 		free(id);
5412 		if (err)
5413 			goto done;
5414 
5415 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5416 			char *child_path;
5417 			if (asprintf(&child_path, "%s%s%s", path,
5418 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5419 			    got_tree_entry_get_name(te)) == -1) {
5420 				err = got_error_from_errno("asprintf");
5421 				goto done;
5422 			}
5423 			err = print_tree(child_path, commit, show_ids, 1,
5424 			    root_path, repo);
5425 			free(child_path);
5426 			if (err)
5427 				goto done;
5428 		}
5429 	}
5430 done:
5431 	if (tree)
5432 		got_object_tree_close(tree);
5433 	free(tree_id);
5434 	return err;
5435 }
5436 
5437 static const struct got_error *
5438 cmd_tree(int argc, char *argv[])
5439 {
5440 	const struct got_error *error;
5441 	struct got_repository *repo = NULL;
5442 	struct got_worktree *worktree = NULL;
5443 	const char *path, *refname = NULL;
5444 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5445 	struct got_object_id *commit_id = NULL;
5446 	struct got_commit_object *commit = NULL;
5447 	char *commit_id_str = NULL;
5448 	int show_ids = 0, recurse = 0;
5449 	int ch;
5450 	int *pack_fds = NULL;
5451 
5452 #ifndef PROFILE
5453 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5454 	    NULL) == -1)
5455 		err(1, "pledge");
5456 #endif
5457 
5458 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
5459 		switch (ch) {
5460 		case 'c':
5461 			commit_id_str = optarg;
5462 			break;
5463 		case 'i':
5464 			show_ids = 1;
5465 			break;
5466 		case 'R':
5467 			recurse = 1;
5468 			break;
5469 		case 'r':
5470 			repo_path = realpath(optarg, NULL);
5471 			if (repo_path == NULL)
5472 				return got_error_from_errno2("realpath",
5473 				    optarg);
5474 			got_path_strip_trailing_slashes(repo_path);
5475 			break;
5476 		default:
5477 			usage_tree();
5478 			/* NOTREACHED */
5479 		}
5480 	}
5481 
5482 	argc -= optind;
5483 	argv += optind;
5484 
5485 	if (argc == 1)
5486 		path = argv[0];
5487 	else if (argc > 1)
5488 		usage_tree();
5489 	else
5490 		path = NULL;
5491 
5492 	cwd = getcwd(NULL, 0);
5493 	if (cwd == NULL) {
5494 		error = got_error_from_errno("getcwd");
5495 		goto done;
5496 	}
5497 
5498 	error = got_repo_pack_fds_open(&pack_fds);
5499 	if (error != NULL)
5500 		goto done;
5501 
5502 	if (repo_path == NULL) {
5503 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
5504 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5505 			goto done;
5506 		else
5507 			error = NULL;
5508 		if (worktree) {
5509 			repo_path =
5510 			    strdup(got_worktree_get_repo_path(worktree));
5511 			if (repo_path == NULL)
5512 				error = got_error_from_errno("strdup");
5513 			if (error)
5514 				goto done;
5515 		} else {
5516 			repo_path = strdup(cwd);
5517 			if (repo_path == NULL) {
5518 				error = got_error_from_errno("strdup");
5519 				goto done;
5520 			}
5521 		}
5522 	}
5523 
5524 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5525 	if (error != NULL)
5526 		goto done;
5527 
5528 	if (worktree) {
5529 		const char *prefix = got_worktree_get_path_prefix(worktree);
5530 		char *p;
5531 
5532 		if (path == NULL || got_path_is_root_dir(path))
5533 			path = "";
5534 		error = got_worktree_resolve_path(&p, worktree, path);
5535 		if (error)
5536 			goto done;
5537 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5538 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5539 		    p) == -1) {
5540 			error = got_error_from_errno("asprintf");
5541 			free(p);
5542 			goto done;
5543 		}
5544 		free(p);
5545 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5546 		if (error)
5547 			goto done;
5548 	} else {
5549 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5550 		if (error)
5551 			goto done;
5552 		if (path == NULL)
5553 			path = "/";
5554 		error = got_repo_map_path(&in_repo_path, repo, path);
5555 		if (error != NULL)
5556 			goto done;
5557 	}
5558 
5559 	if (commit_id_str == NULL) {
5560 		struct got_reference *head_ref;
5561 		if (worktree)
5562 			refname = got_worktree_get_head_ref_name(worktree);
5563 		else
5564 			refname = GOT_REF_HEAD;
5565 		error = got_ref_open(&head_ref, repo, refname, 0);
5566 		if (error != NULL)
5567 			goto done;
5568 		error = got_ref_resolve(&commit_id, repo, head_ref);
5569 		got_ref_close(head_ref);
5570 		if (error != NULL)
5571 			goto done;
5572 	} else {
5573 		struct got_reflist_head refs;
5574 		TAILQ_INIT(&refs);
5575 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5576 		    NULL);
5577 		if (error)
5578 			goto done;
5579 		error = got_repo_match_object_id(&commit_id, NULL,
5580 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5581 		got_ref_list_free(&refs);
5582 		if (error)
5583 			goto done;
5584 	}
5585 
5586 	if (worktree) {
5587 		/* Release work tree lock. */
5588 		got_worktree_close(worktree);
5589 		worktree = NULL;
5590 	}
5591 
5592 	error = got_object_open_as_commit(&commit, repo, commit_id);
5593 	if (error)
5594 		goto done;
5595 
5596 	error = print_tree(in_repo_path, commit, show_ids, recurse,
5597 	    in_repo_path, repo);
5598 done:
5599 	free(in_repo_path);
5600 	free(repo_path);
5601 	free(cwd);
5602 	free(commit_id);
5603 	if (commit)
5604 		got_object_commit_close(commit);
5605 	if (worktree)
5606 		got_worktree_close(worktree);
5607 	if (repo) {
5608 		const struct got_error *close_err = got_repo_close(repo);
5609 		if (error == NULL)
5610 			error = close_err;
5611 	}
5612 	if (pack_fds) {
5613 		const struct got_error *pack_err =
5614 		    got_repo_pack_fds_close(pack_fds);
5615 		if (error == NULL)
5616 			error = pack_err;
5617 	}
5618 	return error;
5619 }
5620 
5621 __dead static void
5622 usage_status(void)
5623 {
5624 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
5625 	    "[-s status-codes] [path ...]\n", getprogname());
5626 	exit(1);
5627 }
5628 
5629 struct got_status_arg {
5630 	char *status_codes;
5631 	int suppress;
5632 };
5633 
5634 static const struct got_error *
5635 print_status(void *arg, unsigned char status, unsigned char staged_status,
5636     const char *path, struct got_object_id *blob_id,
5637     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
5638     int dirfd, const char *de_name)
5639 {
5640 	struct got_status_arg *st = arg;
5641 
5642 	if (status == staged_status && (status == GOT_STATUS_DELETE))
5643 		status = GOT_STATUS_NO_CHANGE;
5644 	if (st != NULL && st->status_codes) {
5645 		size_t ncodes = strlen(st->status_codes);
5646 		int i, j = 0;
5647 
5648 		for (i = 0; i < ncodes ; i++) {
5649 			if (st->suppress) {
5650 				if (status == st->status_codes[i] ||
5651 				    staged_status == st->status_codes[i]) {
5652 					j++;
5653 					continue;
5654 				}
5655 			} else {
5656 				if (status == st->status_codes[i] ||
5657 				    staged_status == st->status_codes[i])
5658 					break;
5659 			}
5660 		}
5661 
5662 		if (st->suppress && j == 0)
5663 			goto print;
5664 
5665 		if (i == ncodes)
5666 			return NULL;
5667 	}
5668 print:
5669 	printf("%c%c %s\n", status, staged_status, path);
5670 	return NULL;
5671 }
5672 
5673 static const struct got_error *
5674 cmd_status(int argc, char *argv[])
5675 {
5676 	const struct got_error *error = NULL;
5677 	struct got_repository *repo = NULL;
5678 	struct got_worktree *worktree = NULL;
5679 	struct got_status_arg st;
5680 	char *cwd = NULL;
5681 	struct got_pathlist_head paths;
5682 	int ch, i, no_ignores = 0;
5683 	int *pack_fds = NULL;
5684 
5685 	TAILQ_INIT(&paths);
5686 
5687 	memset(&st, 0, sizeof(st));
5688 	st.status_codes = NULL;
5689 	st.suppress = 0;
5690 
5691 #ifndef PROFILE
5692 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5693 	    NULL) == -1)
5694 		err(1, "pledge");
5695 #endif
5696 
5697 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
5698 		switch (ch) {
5699 		case 'I':
5700 			no_ignores = 1;
5701 			break;
5702 		case 'S':
5703 			if (st.status_codes != NULL && st.suppress == 0)
5704 				option_conflict('S', 's');
5705 			st.suppress = 1;
5706 			/* fallthrough */
5707 		case 's':
5708 			for (i = 0; optarg[i] != '\0'; i++) {
5709 				switch (optarg[i]) {
5710 				case GOT_STATUS_MODIFY:
5711 				case GOT_STATUS_ADD:
5712 				case GOT_STATUS_DELETE:
5713 				case GOT_STATUS_CONFLICT:
5714 				case GOT_STATUS_MISSING:
5715 				case GOT_STATUS_OBSTRUCTED:
5716 				case GOT_STATUS_UNVERSIONED:
5717 				case GOT_STATUS_MODE_CHANGE:
5718 				case GOT_STATUS_NONEXISTENT:
5719 					break;
5720 				default:
5721 					errx(1, "invalid status code '%c'",
5722 					    optarg[i]);
5723 				}
5724 			}
5725 			if (ch == 's' && st.suppress)
5726 				option_conflict('s', 'S');
5727 			st.status_codes = optarg;
5728 			break;
5729 		default:
5730 			usage_status();
5731 			/* NOTREACHED */
5732 		}
5733 	}
5734 
5735 	argc -= optind;
5736 	argv += optind;
5737 
5738 	cwd = getcwd(NULL, 0);
5739 	if (cwd == NULL) {
5740 		error = got_error_from_errno("getcwd");
5741 		goto done;
5742 	}
5743 
5744 	error = got_repo_pack_fds_open(&pack_fds);
5745 	if (error != NULL)
5746 		goto done;
5747 
5748 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
5749 	if (error) {
5750 		if (error->code == GOT_ERR_NOT_WORKTREE)
5751 			error = wrap_not_worktree_error(error, "status", cwd);
5752 		goto done;
5753 	}
5754 
5755 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
5756 	    NULL, pack_fds);
5757 	if (error != NULL)
5758 		goto done;
5759 
5760 	error = apply_unveil(got_repo_get_path(repo), 1,
5761 	    got_worktree_get_root_path(worktree));
5762 	if (error)
5763 		goto done;
5764 
5765 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
5766 	if (error)
5767 		goto done;
5768 
5769 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
5770 	    print_status, &st, check_cancelled, NULL);
5771 done:
5772 	if (pack_fds) {
5773 		const struct got_error *pack_err =
5774 		    got_repo_pack_fds_close(pack_fds);
5775 		if (error == NULL)
5776 			error = pack_err;
5777 	}
5778 	if (repo) {
5779 		const struct got_error *close_err = got_repo_close(repo);
5780 		if (error == NULL)
5781 			error = close_err;
5782 	}
5783 
5784 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
5785 	free(cwd);
5786 	return error;
5787 }
5788 
5789 __dead static void
5790 usage_tag(void)
5791 {
5792 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
5793 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
5794 	exit(1);
5795 }
5796 
5797 #if 0
5798 static const struct got_error *
5799 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
5800 {
5801 	const struct got_error *err = NULL;
5802 	struct got_reflist_entry *re, *se, *new;
5803 	struct got_object_id *re_id, *se_id;
5804 	struct got_tag_object *re_tag, *se_tag;
5805 	time_t re_time, se_time;
5806 
5807 	STAILQ_FOREACH(re, tags, entry) {
5808 		se = STAILQ_FIRST(sorted);
5809 		if (se == NULL) {
5810 			err = got_reflist_entry_dup(&new, re);
5811 			if (err)
5812 				return err;
5813 			STAILQ_INSERT_HEAD(sorted, new, entry);
5814 			continue;
5815 		} else {
5816 			err = got_ref_resolve(&re_id, repo, re->ref);
5817 			if (err)
5818 				break;
5819 			err = got_object_open_as_tag(&re_tag, repo, re_id);
5820 			free(re_id);
5821 			if (err)
5822 				break;
5823 			re_time = got_object_tag_get_tagger_time(re_tag);
5824 			got_object_tag_close(re_tag);
5825 		}
5826 
5827 		while (se) {
5828 			err = got_ref_resolve(&se_id, repo, re->ref);
5829 			if (err)
5830 				break;
5831 			err = got_object_open_as_tag(&se_tag, repo, se_id);
5832 			free(se_id);
5833 			if (err)
5834 				break;
5835 			se_time = got_object_tag_get_tagger_time(se_tag);
5836 			got_object_tag_close(se_tag);
5837 
5838 			if (se_time > re_time) {
5839 				err = got_reflist_entry_dup(&new, re);
5840 				if (err)
5841 					return err;
5842 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
5843 				break;
5844 			}
5845 			se = STAILQ_NEXT(se, entry);
5846 			continue;
5847 		}
5848 	}
5849 done:
5850 	return err;
5851 }
5852 #endif
5853 
5854 static const struct got_error *
5855 get_tag_refname(char **refname, const char *tag_name)
5856 {
5857 	const struct got_error *err;
5858 
5859 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
5860 		*refname = strdup(tag_name);
5861 		if (*refname == NULL)
5862 			return got_error_from_errno("strdup");
5863 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
5864 		err = got_error_from_errno("asprintf");
5865 		*refname = NULL;
5866 		return err;
5867 	}
5868 
5869 	return NULL;
5870 }
5871 
5872 static const struct got_error *
5873 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
5874     const char *allowed_signers, const char *revoked_signers, int verbosity)
5875 {
5876 	static const struct got_error *err = NULL;
5877 	struct got_reflist_head refs;
5878 	struct got_reflist_entry *re;
5879 	char *wanted_refname = NULL;
5880 	int bad_sigs = 0;
5881 
5882 	TAILQ_INIT(&refs);
5883 
5884 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
5885 	if (err)
5886 		return err;
5887 
5888 	if (tag_name) {
5889 		struct got_reference *ref;
5890 		err = get_tag_refname(&wanted_refname, tag_name);
5891 		if (err)
5892 			goto done;
5893 		/* Wanted tag reference should exist. */
5894 		err = got_ref_open(&ref, repo, wanted_refname, 0);
5895 		if (err)
5896 			goto done;
5897 		got_ref_close(ref);
5898 	}
5899 
5900 	TAILQ_FOREACH(re, &refs, entry) {
5901 		const char *refname;
5902 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
5903 		char datebuf[26];
5904 		const char *tagger, *ssh_sig = NULL;
5905 		char *sig_msg = NULL;
5906 		time_t tagger_time;
5907 		struct got_object_id *id;
5908 		struct got_tag_object *tag;
5909 		struct got_commit_object *commit = NULL;
5910 
5911 		refname = got_ref_get_name(re->ref);
5912 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
5913 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
5914 			continue;
5915 		refname += 10;
5916 		refstr = got_ref_to_str(re->ref);
5917 		if (refstr == NULL) {
5918 			err = got_error_from_errno("got_ref_to_str");
5919 			break;
5920 		}
5921 
5922 		err = got_ref_resolve(&id, repo, re->ref);
5923 		if (err)
5924 			break;
5925 		err = got_object_open_as_tag(&tag, repo, id);
5926 		if (err) {
5927 			if (err->code != GOT_ERR_OBJ_TYPE) {
5928 				free(id);
5929 				break;
5930 			}
5931 			/* "lightweight" tag */
5932 			err = got_object_open_as_commit(&commit, repo, id);
5933 			if (err) {
5934 				free(id);
5935 				break;
5936 			}
5937 			tagger = got_object_commit_get_committer(commit);
5938 			tagger_time =
5939 			    got_object_commit_get_committer_time(commit);
5940 			err = got_object_id_str(&id_str, id);
5941 			free(id);
5942 			if (err)
5943 				break;
5944 		} else {
5945 			free(id);
5946 			tagger = got_object_tag_get_tagger(tag);
5947 			tagger_time = got_object_tag_get_tagger_time(tag);
5948 			err = got_object_id_str(&id_str,
5949 			    got_object_tag_get_object_id(tag));
5950 			if (err)
5951 				break;
5952 		}
5953 
5954 		if (tag && verify_tags) {
5955 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
5956 			    got_object_tag_get_message(tag));
5957 			if (ssh_sig && allowed_signers == NULL) {
5958 				err = got_error_msg(
5959 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
5960 				    "SSH signature verification requires "
5961 				        "setting allowed_signers in "
5962 				        "got.conf(5)");
5963 				break;
5964 			}
5965 		}
5966 
5967 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
5968 		free(refstr);
5969 		printf("from: %s\n", tagger);
5970 		datestr = get_datestr(&tagger_time, datebuf);
5971 		if (datestr)
5972 			printf("date: %s UTC\n", datestr);
5973 		if (commit)
5974 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
5975 		else {
5976 			switch (got_object_tag_get_object_type(tag)) {
5977 			case GOT_OBJ_TYPE_BLOB:
5978 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
5979 				    id_str);
5980 				break;
5981 			case GOT_OBJ_TYPE_TREE:
5982 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
5983 				    id_str);
5984 				break;
5985 			case GOT_OBJ_TYPE_COMMIT:
5986 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
5987 				    id_str);
5988 				break;
5989 			case GOT_OBJ_TYPE_TAG:
5990 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
5991 				    id_str);
5992 				break;
5993 			default:
5994 				break;
5995 			}
5996 		}
5997 		free(id_str);
5998 
5999 		if (ssh_sig) {
6000 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
6001 				allowed_signers, revoked_signers, verbosity);
6002 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
6003 				bad_sigs = 1;
6004 			else if (err)
6005 				break;
6006 			printf("signature: %s", sig_msg);
6007 			free(sig_msg);
6008 			sig_msg = NULL;
6009 		}
6010 
6011 		if (commit) {
6012 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
6013 			if (err)
6014 				break;
6015 			got_object_commit_close(commit);
6016 		} else {
6017 			tagmsg0 = strdup(got_object_tag_get_message(tag));
6018 			got_object_tag_close(tag);
6019 			if (tagmsg0 == NULL) {
6020 				err = got_error_from_errno("strdup");
6021 				break;
6022 			}
6023 		}
6024 
6025 		tagmsg = tagmsg0;
6026 		do {
6027 			line = strsep(&tagmsg, "\n");
6028 			if (line)
6029 				printf(" %s\n", line);
6030 		} while (line);
6031 		free(tagmsg0);
6032 	}
6033 done:
6034 	got_ref_list_free(&refs);
6035 	free(wanted_refname);
6036 
6037 	if (err == NULL && bad_sigs)
6038 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
6039 	return err;
6040 }
6041 
6042 static const struct got_error *
6043 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
6044     const char *tag_name, const char *repo_path)
6045 {
6046 	const struct got_error *err = NULL;
6047 	char *template = NULL, *initial_content = NULL;
6048 	char *editor = NULL;
6049 	int initial_content_len;
6050 	int fd = -1;
6051 
6052 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
6053 		err = got_error_from_errno("asprintf");
6054 		goto done;
6055 	}
6056 
6057 	initial_content_len = asprintf(&initial_content,
6058 	    "\n# tagging commit %s as %s\n",
6059 	    commit_id_str, tag_name);
6060 	if (initial_content_len == -1) {
6061 		err = got_error_from_errno("asprintf");
6062 		goto done;
6063 	}
6064 
6065 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
6066 	if (err)
6067 		goto done;
6068 
6069 	if (write(fd, initial_content, initial_content_len) == -1) {
6070 		err = got_error_from_errno2("write", *tagmsg_path);
6071 		goto done;
6072 	}
6073 	if (close(fd) == -1) {
6074 		err = got_error_from_errno2("close", *tagmsg_path);
6075 		goto done;
6076 	}
6077 	fd = -1;
6078 
6079 	err = get_editor(&editor);
6080 	if (err)
6081 		goto done;
6082 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
6083 	    initial_content_len, 1);
6084 done:
6085 	free(initial_content);
6086 	free(template);
6087 	free(editor);
6088 
6089 	if (fd != -1 && close(fd) == -1 && err == NULL)
6090 		err = got_error_from_errno2("close", *tagmsg_path);
6091 
6092 	if (err) {
6093 		free(*tagmsg);
6094 		*tagmsg = NULL;
6095 	}
6096 	return err;
6097 }
6098 
6099 static const struct got_error *
6100 add_tag(struct got_repository *repo, const char *tagger,
6101     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
6102     const char *signer_id, int verbosity)
6103 {
6104 	const struct got_error *err = NULL;
6105 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
6106 	char *label = NULL, *commit_id_str = NULL;
6107 	struct got_reference *ref = NULL;
6108 	char *refname = NULL, *tagmsg = NULL;
6109 	char *tagmsg_path = NULL, *tag_id_str = NULL;
6110 	int preserve_tagmsg = 0;
6111 	struct got_reflist_head refs;
6112 
6113 	TAILQ_INIT(&refs);
6114 
6115 	/*
6116 	 * Don't let the user create a tag name with a leading '-'.
6117 	 * While technically a valid reference name, this case is usually
6118 	 * an unintended typo.
6119 	 */
6120 	if (tag_name[0] == '-')
6121 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
6122 
6123 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6124 	if (err)
6125 		goto done;
6126 
6127 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
6128 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
6129 	if (err)
6130 		goto done;
6131 
6132 	err = got_object_id_str(&commit_id_str, commit_id);
6133 	if (err)
6134 		goto done;
6135 
6136 	err = get_tag_refname(&refname, tag_name);
6137 	if (err)
6138 		goto done;
6139 	if (strncmp("refs/tags/", tag_name, 10) == 0)
6140 		tag_name += 10;
6141 
6142 	err = got_ref_open(&ref, repo, refname, 0);
6143 	if (err == NULL) {
6144 		err = got_error(GOT_ERR_TAG_EXISTS);
6145 		goto done;
6146 	} else if (err->code != GOT_ERR_NOT_REF)
6147 		goto done;
6148 
6149 	if (tagmsg_arg == NULL) {
6150 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
6151 		    tag_name, got_repo_get_path(repo));
6152 		if (err) {
6153 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
6154 			    tagmsg_path != NULL)
6155 				preserve_tagmsg = 1;
6156 			goto done;
6157 		}
6158 		/* Editor is done; we can now apply unveil(2) */
6159 		err = got_sigs_apply_unveil();
6160 		if (err)
6161 			goto done;
6162 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
6163 		if (err)
6164 			goto done;
6165 	}
6166 
6167 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
6168 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
6169 	    verbosity);
6170 	if (err) {
6171 		if (tagmsg_path)
6172 			preserve_tagmsg = 1;
6173 		goto done;
6174 	}
6175 
6176 	err = got_ref_alloc(&ref, refname, tag_id);
6177 	if (err) {
6178 		if (tagmsg_path)
6179 			preserve_tagmsg = 1;
6180 		goto done;
6181 	}
6182 
6183 	err = got_ref_write(ref, repo);
6184 	if (err) {
6185 		if (tagmsg_path)
6186 			preserve_tagmsg = 1;
6187 		goto done;
6188 	}
6189 
6190 	err = got_object_id_str(&tag_id_str, tag_id);
6191 	if (err) {
6192 		if (tagmsg_path)
6193 			preserve_tagmsg = 1;
6194 		goto done;
6195 	}
6196 	printf("Created tag %s\n", tag_id_str);
6197 done:
6198 	if (preserve_tagmsg) {
6199 		fprintf(stderr, "%s: tag message preserved in %s\n",
6200 		    getprogname(), tagmsg_path);
6201 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
6202 		err = got_error_from_errno2("unlink", tagmsg_path);
6203 	free(tag_id_str);
6204 	if (ref)
6205 		got_ref_close(ref);
6206 	free(commit_id);
6207 	free(commit_id_str);
6208 	free(refname);
6209 	free(tagmsg);
6210 	free(tagmsg_path);
6211 	got_ref_list_free(&refs);
6212 	return err;
6213 }
6214 
6215 static const struct got_error *
6216 cmd_tag(int argc, char *argv[])
6217 {
6218 	const struct got_error *error = NULL;
6219 	struct got_repository *repo = NULL;
6220 	struct got_worktree *worktree = NULL;
6221 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
6222 	char *gitconfig_path = NULL, *tagger = NULL;
6223 	char *allowed_signers = NULL, *revoked_signers = NULL;
6224 	const char *signer_id = NULL;
6225 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
6226 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
6227 	int *pack_fds = NULL;
6228 
6229 #ifndef PROFILE
6230 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6231 	    "sendfd unveil", NULL) == -1)
6232 		err(1, "pledge");
6233 #endif
6234 
6235 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
6236 		switch (ch) {
6237 		case 'c':
6238 			commit_id_arg = optarg;
6239 			break;
6240 		case 'l':
6241 			do_list = 1;
6242 			break;
6243 		case 'm':
6244 			tagmsg = optarg;
6245 			break;
6246 		case 'r':
6247 			repo_path = realpath(optarg, NULL);
6248 			if (repo_path == NULL) {
6249 				error = got_error_from_errno2("realpath",
6250 				    optarg);
6251 				goto done;
6252 			}
6253 			got_path_strip_trailing_slashes(repo_path);
6254 			break;
6255 		case 's':
6256 			signer_id = optarg;
6257 			break;
6258 		case 'V':
6259 			verify_tags = 1;
6260 			break;
6261 		case 'v':
6262 			if (verbosity < 0)
6263 				verbosity = 0;
6264 			else if (verbosity < 3)
6265 				verbosity++;
6266 			break;
6267 		default:
6268 			usage_tag();
6269 			/* NOTREACHED */
6270 		}
6271 	}
6272 
6273 	argc -= optind;
6274 	argv += optind;
6275 
6276 	if (do_list || verify_tags) {
6277 		if (commit_id_arg != NULL)
6278 			errx(1,
6279 			    "-c option can only be used when creating a tag");
6280 		if (tagmsg) {
6281 			if (do_list)
6282 				option_conflict('l', 'm');
6283 			else
6284 				option_conflict('V', 'm');
6285 		}
6286 		if (signer_id) {
6287 			if (do_list)
6288 				option_conflict('l', 's');
6289 			else
6290 				option_conflict('V', 's');
6291 		}
6292 		if (argc > 1)
6293 			usage_tag();
6294 	} else if (argc != 1)
6295 		usage_tag();
6296 
6297 	if (argc == 1)
6298 		tag_name = argv[0];
6299 
6300 	cwd = getcwd(NULL, 0);
6301 	if (cwd == NULL) {
6302 		error = got_error_from_errno("getcwd");
6303 		goto done;
6304 	}
6305 
6306 	error = got_repo_pack_fds_open(&pack_fds);
6307 	if (error != NULL)
6308 		goto done;
6309 
6310 	if (repo_path == NULL) {
6311 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6312 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6313 			goto done;
6314 		else
6315 			error = NULL;
6316 		if (worktree) {
6317 			repo_path =
6318 			    strdup(got_worktree_get_repo_path(worktree));
6319 			if (repo_path == NULL)
6320 				error = got_error_from_errno("strdup");
6321 			if (error)
6322 				goto done;
6323 		} else {
6324 			repo_path = strdup(cwd);
6325 			if (repo_path == NULL) {
6326 				error = got_error_from_errno("strdup");
6327 				goto done;
6328 			}
6329 		}
6330 	}
6331 
6332 	if (do_list || verify_tags) {
6333 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6334 		if (error != NULL)
6335 			goto done;
6336 		error = get_allowed_signers(&allowed_signers, repo, worktree);
6337 		if (error)
6338 			goto done;
6339 		error = get_revoked_signers(&revoked_signers, repo, worktree);
6340 		if (error)
6341 			goto done;
6342 		if (worktree) {
6343 			/* Release work tree lock. */
6344 			got_worktree_close(worktree);
6345 			worktree = NULL;
6346 		}
6347 
6348 		/*
6349 		 * Remove "cpath" promise unless needed for signature tmpfile
6350 		 * creation.
6351 		 */
6352 		if (verify_tags)
6353 		 	got_sigs_apply_unveil();
6354 		else {
6355 #ifndef PROFILE
6356 			if (pledge("stdio rpath wpath flock proc exec sendfd "
6357 			    "unveil", NULL) == -1)
6358 				err(1, "pledge");
6359 #endif
6360 		}
6361 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6362 		if (error)
6363 			goto done;
6364 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
6365 		    revoked_signers, verbosity);
6366 	} else {
6367 		error = get_gitconfig_path(&gitconfig_path);
6368 		if (error)
6369 			goto done;
6370 		error = got_repo_open(&repo, repo_path, gitconfig_path,
6371 		    pack_fds);
6372 		if (error != NULL)
6373 			goto done;
6374 
6375 		error = get_author(&tagger, repo, worktree);
6376 		if (error)
6377 			goto done;
6378 		if (signer_id == NULL)
6379 			signer_id = get_signer_id(repo, worktree);
6380 
6381 		if (tagmsg) {
6382 			if (signer_id) {
6383 				error = got_sigs_apply_unveil();
6384 				if (error)
6385 					goto done;
6386 			}
6387 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
6388 			if (error)
6389 				goto done;
6390 		}
6391 
6392 		if (commit_id_arg == NULL) {
6393 			struct got_reference *head_ref;
6394 			struct got_object_id *commit_id;
6395 			error = got_ref_open(&head_ref, repo,
6396 			    worktree ? got_worktree_get_head_ref_name(worktree)
6397 			    : GOT_REF_HEAD, 0);
6398 			if (error)
6399 				goto done;
6400 			error = got_ref_resolve(&commit_id, repo, head_ref);
6401 			got_ref_close(head_ref);
6402 			if (error)
6403 				goto done;
6404 			error = got_object_id_str(&commit_id_str, commit_id);
6405 			free(commit_id);
6406 			if (error)
6407 				goto done;
6408 		}
6409 
6410 		if (worktree) {
6411 			/* Release work tree lock. */
6412 			got_worktree_close(worktree);
6413 			worktree = NULL;
6414 		}
6415 
6416 		error = add_tag(repo, tagger, tag_name,
6417 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
6418 		    signer_id, verbosity);
6419 	}
6420 done:
6421 	if (repo) {
6422 		const struct got_error *close_err = got_repo_close(repo);
6423 		if (error == NULL)
6424 			error = close_err;
6425 	}
6426 	if (worktree)
6427 		got_worktree_close(worktree);
6428 	if (pack_fds) {
6429 		const struct got_error *pack_err =
6430 		    got_repo_pack_fds_close(pack_fds);
6431 		if (error == NULL)
6432 			error = pack_err;
6433 	}
6434 	free(cwd);
6435 	free(repo_path);
6436 	free(gitconfig_path);
6437 	free(commit_id_str);
6438 	free(tagger);
6439 	free(allowed_signers);
6440 	free(revoked_signers);
6441 	return error;
6442 }
6443 
6444 __dead static void
6445 usage_add(void)
6446 {
6447 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
6448 	exit(1);
6449 }
6450 
6451 static const struct got_error *
6452 add_progress(void *arg, unsigned char status, const char *path)
6453 {
6454 	while (path[0] == '/')
6455 		path++;
6456 	printf("%c  %s\n", status, path);
6457 	return NULL;
6458 }
6459 
6460 static const struct got_error *
6461 cmd_add(int argc, char *argv[])
6462 {
6463 	const struct got_error *error = NULL;
6464 	struct got_repository *repo = NULL;
6465 	struct got_worktree *worktree = NULL;
6466 	char *cwd = NULL;
6467 	struct got_pathlist_head paths;
6468 	struct got_pathlist_entry *pe;
6469 	int ch, can_recurse = 0, no_ignores = 0;
6470 	int *pack_fds = NULL;
6471 
6472 	TAILQ_INIT(&paths);
6473 
6474 #ifndef PROFILE
6475 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6476 	    NULL) == -1)
6477 		err(1, "pledge");
6478 #endif
6479 
6480 	while ((ch = getopt(argc, argv, "IR")) != -1) {
6481 		switch (ch) {
6482 		case 'I':
6483 			no_ignores = 1;
6484 			break;
6485 		case 'R':
6486 			can_recurse = 1;
6487 			break;
6488 		default:
6489 			usage_add();
6490 			/* NOTREACHED */
6491 		}
6492 	}
6493 
6494 	argc -= optind;
6495 	argv += optind;
6496 
6497 	if (argc < 1)
6498 		usage_add();
6499 
6500 	cwd = getcwd(NULL, 0);
6501 	if (cwd == NULL) {
6502 		error = got_error_from_errno("getcwd");
6503 		goto done;
6504 	}
6505 
6506 	error = got_repo_pack_fds_open(&pack_fds);
6507 	if (error != NULL)
6508 		goto done;
6509 
6510 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6511 	if (error) {
6512 		if (error->code == GOT_ERR_NOT_WORKTREE)
6513 			error = wrap_not_worktree_error(error, "add", cwd);
6514 		goto done;
6515 	}
6516 
6517 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6518 	    NULL, pack_fds);
6519 	if (error != NULL)
6520 		goto done;
6521 
6522 	error = apply_unveil(got_repo_get_path(repo), 1,
6523 	    got_worktree_get_root_path(worktree));
6524 	if (error)
6525 		goto done;
6526 
6527 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6528 	if (error)
6529 		goto done;
6530 
6531 	if (!can_recurse) {
6532 		char *ondisk_path;
6533 		struct stat sb;
6534 		TAILQ_FOREACH(pe, &paths, entry) {
6535 			if (asprintf(&ondisk_path, "%s/%s",
6536 			    got_worktree_get_root_path(worktree),
6537 			    pe->path) == -1) {
6538 				error = got_error_from_errno("asprintf");
6539 				goto done;
6540 			}
6541 			if (lstat(ondisk_path, &sb) == -1) {
6542 				if (errno == ENOENT) {
6543 					free(ondisk_path);
6544 					continue;
6545 				}
6546 				error = got_error_from_errno2("lstat",
6547 				    ondisk_path);
6548 				free(ondisk_path);
6549 				goto done;
6550 			}
6551 			free(ondisk_path);
6552 			if (S_ISDIR(sb.st_mode)) {
6553 				error = got_error_msg(GOT_ERR_BAD_PATH,
6554 				    "adding directories requires -R option");
6555 				goto done;
6556 			}
6557 		}
6558 	}
6559 
6560 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
6561 	    NULL, repo, no_ignores);
6562 done:
6563 	if (repo) {
6564 		const struct got_error *close_err = got_repo_close(repo);
6565 		if (error == NULL)
6566 			error = close_err;
6567 	}
6568 	if (worktree)
6569 		got_worktree_close(worktree);
6570 	if (pack_fds) {
6571 		const struct got_error *pack_err =
6572 		    got_repo_pack_fds_close(pack_fds);
6573 		if (error == NULL)
6574 			error = pack_err;
6575 	}
6576 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6577 	free(cwd);
6578 	return error;
6579 }
6580 
6581 __dead static void
6582 usage_remove(void)
6583 {
6584 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
6585 	    getprogname());
6586 	exit(1);
6587 }
6588 
6589 static const struct got_error *
6590 print_remove_status(void *arg, unsigned char status,
6591     unsigned char staged_status, const char *path)
6592 {
6593 	while (path[0] == '/')
6594 		path++;
6595 	if (status == GOT_STATUS_NONEXISTENT)
6596 		return NULL;
6597 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6598 		status = GOT_STATUS_NO_CHANGE;
6599 	printf("%c%c %s\n", status, staged_status, path);
6600 	return NULL;
6601 }
6602 
6603 static const struct got_error *
6604 cmd_remove(int argc, char *argv[])
6605 {
6606 	const struct got_error *error = NULL;
6607 	struct got_worktree *worktree = NULL;
6608 	struct got_repository *repo = NULL;
6609 	const char *status_codes = NULL;
6610 	char *cwd = NULL;
6611 	struct got_pathlist_head paths;
6612 	struct got_pathlist_entry *pe;
6613 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
6614 	int ignore_missing_paths = 0;
6615 	int *pack_fds = NULL;
6616 
6617 	TAILQ_INIT(&paths);
6618 
6619 #ifndef PROFILE
6620 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6621 	    NULL) == -1)
6622 		err(1, "pledge");
6623 #endif
6624 
6625 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
6626 		switch (ch) {
6627 		case 'f':
6628 			delete_local_mods = 1;
6629 			ignore_missing_paths = 1;
6630 			break;
6631 		case 'k':
6632 			keep_on_disk = 1;
6633 			break;
6634 		case 'R':
6635 			can_recurse = 1;
6636 			break;
6637 		case 's':
6638 			for (i = 0; optarg[i] != '\0'; i++) {
6639 				switch (optarg[i]) {
6640 				case GOT_STATUS_MODIFY:
6641 					delete_local_mods = 1;
6642 					break;
6643 				case GOT_STATUS_MISSING:
6644 					ignore_missing_paths = 1;
6645 					break;
6646 				default:
6647 					errx(1, "invalid status code '%c'",
6648 					    optarg[i]);
6649 				}
6650 			}
6651 			status_codes = optarg;
6652 			break;
6653 		default:
6654 			usage_remove();
6655 			/* NOTREACHED */
6656 		}
6657 	}
6658 
6659 	argc -= optind;
6660 	argv += optind;
6661 
6662 	if (argc < 1)
6663 		usage_remove();
6664 
6665 	cwd = getcwd(NULL, 0);
6666 	if (cwd == NULL) {
6667 		error = got_error_from_errno("getcwd");
6668 		goto done;
6669 	}
6670 
6671 	error = got_repo_pack_fds_open(&pack_fds);
6672 	if (error != NULL)
6673 		goto done;
6674 
6675 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6676 	if (error) {
6677 		if (error->code == GOT_ERR_NOT_WORKTREE)
6678 			error = wrap_not_worktree_error(error, "remove", cwd);
6679 		goto done;
6680 	}
6681 
6682 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6683 	    NULL, pack_fds);
6684 	if (error)
6685 		goto done;
6686 
6687 	error = apply_unveil(got_repo_get_path(repo), 1,
6688 	    got_worktree_get_root_path(worktree));
6689 	if (error)
6690 		goto done;
6691 
6692 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6693 	if (error)
6694 		goto done;
6695 
6696 	if (!can_recurse) {
6697 		char *ondisk_path;
6698 		struct stat sb;
6699 		TAILQ_FOREACH(pe, &paths, entry) {
6700 			if (asprintf(&ondisk_path, "%s/%s",
6701 			    got_worktree_get_root_path(worktree),
6702 			    pe->path) == -1) {
6703 				error = got_error_from_errno("asprintf");
6704 				goto done;
6705 			}
6706 			if (lstat(ondisk_path, &sb) == -1) {
6707 				if (errno == ENOENT) {
6708 					free(ondisk_path);
6709 					continue;
6710 				}
6711 				error = got_error_from_errno2("lstat",
6712 				    ondisk_path);
6713 				free(ondisk_path);
6714 				goto done;
6715 			}
6716 			free(ondisk_path);
6717 			if (S_ISDIR(sb.st_mode)) {
6718 				error = got_error_msg(GOT_ERR_BAD_PATH,
6719 				    "removing directories requires -R option");
6720 				goto done;
6721 			}
6722 		}
6723 	}
6724 
6725 	error = got_worktree_schedule_delete(worktree, &paths,
6726 	    delete_local_mods, status_codes, print_remove_status, NULL,
6727 	    repo, keep_on_disk, ignore_missing_paths);
6728 done:
6729 	if (repo) {
6730 		const struct got_error *close_err = got_repo_close(repo);
6731 		if (error == NULL)
6732 			error = close_err;
6733 	}
6734 	if (worktree)
6735 		got_worktree_close(worktree);
6736 	if (pack_fds) {
6737 		const struct got_error *pack_err =
6738 		    got_repo_pack_fds_close(pack_fds);
6739 		if (error == NULL)
6740 			error = pack_err;
6741 	}
6742 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6743 	free(cwd);
6744 	return error;
6745 }
6746 
6747 __dead static void
6748 usage_patch(void)
6749 {
6750 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
6751 	    "[patchfile]\n", getprogname());
6752 	exit(1);
6753 }
6754 
6755 static const struct got_error *
6756 patch_from_stdin(int *patchfd)
6757 {
6758 	const struct got_error *err = NULL;
6759 	ssize_t r;
6760 	char buf[BUFSIZ];
6761 	sig_t sighup, sigint, sigquit;
6762 
6763 	*patchfd = got_opentempfd();
6764 	if (*patchfd == -1)
6765 		return got_error_from_errno("got_opentempfd");
6766 
6767 	sighup = signal(SIGHUP, SIG_DFL);
6768 	sigint = signal(SIGINT, SIG_DFL);
6769 	sigquit = signal(SIGQUIT, SIG_DFL);
6770 
6771 	for (;;) {
6772 		r = read(0, buf, sizeof(buf));
6773 		if (r == -1) {
6774 			err = got_error_from_errno("read");
6775 			break;
6776 		}
6777 		if (r == 0)
6778 			break;
6779 		if (write(*patchfd, buf, r) == -1) {
6780 			err = got_error_from_errno("write");
6781 			break;
6782 		}
6783 	}
6784 
6785 	signal(SIGHUP, sighup);
6786 	signal(SIGINT, sigint);
6787 	signal(SIGQUIT, sigquit);
6788 
6789 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
6790 		err = got_error_from_errno("lseek");
6791 
6792 	if (err != NULL) {
6793 		close(*patchfd);
6794 		*patchfd = -1;
6795 	}
6796 
6797 	return err;
6798 }
6799 
6800 struct got_patch_progress_arg {
6801 	int did_something;
6802 	int conflicts;
6803 	int rejects;
6804 };
6805 
6806 static const struct got_error *
6807 patch_progress(void *arg, const char *old, const char *new,
6808     unsigned char status, const struct got_error *error, int old_from,
6809     int old_lines, int new_from, int new_lines, int offset,
6810     int ws_mangled, const struct got_error *hunk_err)
6811 {
6812 	const char *path = new == NULL ? old : new;
6813 	struct got_patch_progress_arg *a = arg;
6814 
6815 	while (*path == '/')
6816 		path++;
6817 
6818 	if (status != GOT_STATUS_NO_CHANGE &&
6819 	    status != 0 /* per-hunk progress */) {
6820 		printf("%c  %s\n", status, path);
6821 		a->did_something = 1;
6822 	}
6823 
6824 	if (hunk_err == NULL) {
6825 		if (status == GOT_STATUS_CANNOT_UPDATE)
6826 			a->rejects++;
6827 		else if (status == GOT_STATUS_CONFLICT)
6828 			a->conflicts++;
6829 	}
6830 
6831 	if (error != NULL)
6832 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
6833 
6834 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
6835 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
6836 		    old_lines, new_from, new_lines);
6837 		if (hunk_err != NULL)
6838 			printf("%s\n", hunk_err->msg);
6839 		else if (offset != 0)
6840 			printf("applied with offset %d\n", offset);
6841 		else
6842 			printf("hunk contains mangled whitespace\n");
6843 	}
6844 
6845 	return NULL;
6846 }
6847 
6848 static void
6849 print_patch_progress_stats(struct got_patch_progress_arg *ppa)
6850 {
6851 	if (!ppa->did_something)
6852 		return;
6853 
6854 	if (ppa->conflicts > 0)
6855 		printf("Files with merge conflicts: %d\n", ppa->conflicts);
6856 
6857 	if (ppa->rejects > 0) {
6858 		printf("Files where patch failed to apply: %d\n",
6859 		    ppa->rejects);
6860 	}
6861 }
6862 
6863 static const struct got_error *
6864 cmd_patch(int argc, char *argv[])
6865 {
6866 	const struct got_error *error = NULL, *close_error = NULL;
6867 	struct got_worktree *worktree = NULL;
6868 	struct got_repository *repo = NULL;
6869 	struct got_reflist_head refs;
6870 	struct got_object_id *commit_id = NULL;
6871 	const char *commit_id_str = NULL;
6872 	struct stat sb;
6873 	const char *errstr;
6874 	char *cwd = NULL;
6875 	int ch, nop = 0, strip = -1, reverse = 0;
6876 	int patchfd;
6877 	int *pack_fds = NULL;
6878 	struct got_patch_progress_arg ppa;
6879 
6880 	TAILQ_INIT(&refs);
6881 
6882 #ifndef PROFILE
6883 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
6884 	    "unveil", NULL) == -1)
6885 		err(1, "pledge");
6886 #endif
6887 
6888 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
6889 		switch (ch) {
6890 		case 'c':
6891 			commit_id_str = optarg;
6892 			break;
6893 		case 'n':
6894 			nop = 1;
6895 			break;
6896 		case 'p':
6897 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
6898 			if (errstr != NULL)
6899 				errx(1, "pathname strip count is %s: %s",
6900 				     errstr, optarg);
6901 			break;
6902 		case 'R':
6903 			reverse = 1;
6904 			break;
6905 		default:
6906 			usage_patch();
6907 			/* NOTREACHED */
6908 		}
6909 	}
6910 
6911 	argc -= optind;
6912 	argv += optind;
6913 
6914 	if (argc == 0) {
6915 		error = patch_from_stdin(&patchfd);
6916 		if (error)
6917 			return error;
6918 	} else if (argc == 1) {
6919 		patchfd = open(argv[0], O_RDONLY);
6920 		if (patchfd == -1) {
6921 			error = got_error_from_errno2("open", argv[0]);
6922 			return error;
6923 		}
6924 		if (fstat(patchfd, &sb) == -1) {
6925 			error = got_error_from_errno2("fstat", argv[0]);
6926 			goto done;
6927 		}
6928 		if (!S_ISREG(sb.st_mode)) {
6929 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
6930 			goto done;
6931 		}
6932 	} else
6933 		usage_patch();
6934 
6935 	if ((cwd = getcwd(NULL, 0)) == NULL) {
6936 		error = got_error_from_errno("getcwd");
6937 		goto done;
6938 	}
6939 
6940 	error = got_repo_pack_fds_open(&pack_fds);
6941 	if (error != NULL)
6942 		goto done;
6943 
6944 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
6945 	if (error != NULL)
6946 		goto done;
6947 
6948 	const char *repo_path = got_worktree_get_repo_path(worktree);
6949 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6950 	if (error != NULL)
6951 		goto done;
6952 
6953 	error = apply_unveil(got_repo_get_path(repo), 0,
6954 	    got_worktree_get_root_path(worktree));
6955 	if (error != NULL)
6956 		goto done;
6957 
6958 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6959 	if (error)
6960 		goto done;
6961 
6962 	if (commit_id_str != NULL) {
6963 		error = got_repo_match_object_id(&commit_id, NULL,
6964 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6965 		if (error)
6966 			goto done;
6967 	}
6968 
6969 	memset(&ppa, 0, sizeof(ppa));
6970 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
6971 	    commit_id, patch_progress, &ppa, check_cancelled, NULL);
6972 	print_patch_progress_stats(&ppa);
6973 done:
6974 	got_ref_list_free(&refs);
6975 	free(commit_id);
6976 	if (repo) {
6977 		close_error = got_repo_close(repo);
6978 		if (error == NULL)
6979 			error = close_error;
6980 	}
6981 	if (worktree != NULL) {
6982 		close_error = got_worktree_close(worktree);
6983 		if (error == NULL)
6984 			error = close_error;
6985 	}
6986 	if (pack_fds) {
6987 		const struct got_error *pack_err =
6988 		    got_repo_pack_fds_close(pack_fds);
6989 		if (error == NULL)
6990 			error = pack_err;
6991 	}
6992 	free(cwd);
6993 	return error;
6994 }
6995 
6996 __dead static void
6997 usage_revert(void)
6998 {
6999 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
7000 	    getprogname());
7001 	exit(1);
7002 }
7003 
7004 static const struct got_error *
7005 revert_progress(void *arg, unsigned char status, const char *path)
7006 {
7007 	if (status == GOT_STATUS_UNVERSIONED)
7008 		return NULL;
7009 
7010 	while (path[0] == '/')
7011 		path++;
7012 	printf("%c  %s\n", status, path);
7013 	return NULL;
7014 }
7015 
7016 struct choose_patch_arg {
7017 	FILE *patch_script_file;
7018 	const char *action;
7019 };
7020 
7021 static const struct got_error *
7022 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
7023     int nchanges, const char *action)
7024 {
7025 	const struct got_error *err;
7026 	char *line = NULL;
7027 	size_t linesize = 0;
7028 	ssize_t linelen;
7029 
7030 	switch (status) {
7031 	case GOT_STATUS_ADD:
7032 		printf("A  %s\n%s this addition? [y/n] ", path, action);
7033 		break;
7034 	case GOT_STATUS_DELETE:
7035 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
7036 		break;
7037 	case GOT_STATUS_MODIFY:
7038 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
7039 			return got_error_from_errno("fseek");
7040 		printf(GOT_COMMIT_SEP_STR);
7041 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
7042 			printf("%s", line);
7043 		if (linelen == -1 && ferror(patch_file)) {
7044 			err = got_error_from_errno("getline");
7045 			free(line);
7046 			return err;
7047 		}
7048 		free(line);
7049 		printf(GOT_COMMIT_SEP_STR);
7050 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
7051 		    path, n, nchanges, action);
7052 		break;
7053 	default:
7054 		return got_error_path(path, GOT_ERR_FILE_STATUS);
7055 	}
7056 
7057 	fflush(stdout);
7058 	return NULL;
7059 }
7060 
7061 static const struct got_error *
7062 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
7063     FILE *patch_file, int n, int nchanges)
7064 {
7065 	const struct got_error *err = NULL;
7066 	char *line = NULL;
7067 	size_t linesize = 0;
7068 	ssize_t linelen;
7069 	int resp = ' ';
7070 	struct choose_patch_arg *a = arg;
7071 
7072 	*choice = GOT_PATCH_CHOICE_NONE;
7073 
7074 	if (a->patch_script_file) {
7075 		char *nl;
7076 		err = show_change(status, path, patch_file, n, nchanges,
7077 		    a->action);
7078 		if (err)
7079 			return err;
7080 		linelen = getline(&line, &linesize, a->patch_script_file);
7081 		if (linelen == -1) {
7082 			if (ferror(a->patch_script_file))
7083 				return got_error_from_errno("getline");
7084 			return NULL;
7085 		}
7086 		nl = strchr(line, '\n');
7087 		if (nl)
7088 			*nl = '\0';
7089 		if (strcmp(line, "y") == 0) {
7090 			*choice = GOT_PATCH_CHOICE_YES;
7091 			printf("y\n");
7092 		} else if (strcmp(line, "n") == 0) {
7093 			*choice = GOT_PATCH_CHOICE_NO;
7094 			printf("n\n");
7095 		} else if (strcmp(line, "q") == 0 &&
7096 		    status == GOT_STATUS_MODIFY) {
7097 			*choice = GOT_PATCH_CHOICE_QUIT;
7098 			printf("q\n");
7099 		} else
7100 			printf("invalid response '%s'\n", line);
7101 		free(line);
7102 		return NULL;
7103 	}
7104 
7105 	while (resp != 'y' && resp != 'n' && resp != 'q') {
7106 		err = show_change(status, path, patch_file, n, nchanges,
7107 		    a->action);
7108 		if (err)
7109 			return err;
7110 		resp = getchar();
7111 		if (resp == '\n')
7112 			resp = getchar();
7113 		if (status == GOT_STATUS_MODIFY) {
7114 			if (resp != 'y' && resp != 'n' && resp != 'q') {
7115 				printf("invalid response '%c'\n", resp);
7116 				resp = ' ';
7117 			}
7118 		} else if (resp != 'y' && resp != 'n') {
7119 				printf("invalid response '%c'\n", resp);
7120 				resp = ' ';
7121 		}
7122 	}
7123 
7124 	if (resp == 'y')
7125 		*choice = GOT_PATCH_CHOICE_YES;
7126 	else if (resp == 'n')
7127 		*choice = GOT_PATCH_CHOICE_NO;
7128 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
7129 		*choice = GOT_PATCH_CHOICE_QUIT;
7130 
7131 	return NULL;
7132 }
7133 
7134 struct wt_commitable_path_arg {
7135 	struct got_pathlist_head	*commit_paths;
7136 	int				*has_changes;
7137 };
7138 
7139 /*
7140  * Shortcut work tree status callback to determine if the set of paths scanned
7141  * has at least one versioned path that is being modified and, if not NULL, is
7142  * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
7143  * soon as a path is passed with a status that satisfies this criteria.
7144  */
7145 static const struct got_error *
7146 worktree_has_commitable_path(void *arg, unsigned char status,
7147     unsigned char staged_status, const char *path,
7148     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
7149     struct got_object_id *commit_id, int dirfd, const char *de_name)
7150 {
7151 	struct wt_commitable_path_arg *a = arg;
7152 
7153 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7154 		status = GOT_STATUS_NO_CHANGE;
7155 
7156 	if (!(status == GOT_STATUS_NO_CHANGE ||
7157 	    status == GOT_STATUS_UNVERSIONED) ||
7158 	    staged_status != GOT_STATUS_NO_CHANGE) {
7159 		if (a->commit_paths != NULL) {
7160 			struct got_pathlist_entry *pe;
7161 
7162 			TAILQ_FOREACH(pe, a->commit_paths, entry) {
7163 				if (strncmp(path, pe->path,
7164 				    pe->path_len) == 0) {
7165 					*a->has_changes = 1;
7166 					break;
7167 				}
7168 			}
7169 		} else
7170 			*a->has_changes = 1;
7171 
7172 		if (*a->has_changes)
7173 			return got_error(GOT_ERR_FILE_MODIFIED);
7174 	}
7175 
7176 	return NULL;
7177 }
7178 
7179 /*
7180  * Check that the changeset of the commit identified by id is
7181  * comprised of at least one modified path that is being committed.
7182  */
7183 static const struct got_error *
7184 commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
7185     struct got_object_id *id, struct got_worktree *worktree,
7186     struct got_repository *repo)
7187 {
7188 	const struct got_error		*err;
7189 	struct got_pathlist_head	 paths;
7190 	struct got_commit_object	*commit = NULL, *pcommit = NULL;
7191 	struct got_tree_object		*tree = NULL, *ptree = NULL;
7192 	struct got_object_qid		*pid;
7193 
7194 	TAILQ_INIT(&paths);
7195 
7196 	err = got_object_open_as_commit(&commit, repo, id);
7197 	if (err)
7198 		goto done;
7199 
7200 	err = got_object_open_as_tree(&tree, repo,
7201 	    got_object_commit_get_tree_id(commit));
7202 	if (err)
7203 		goto done;
7204 
7205 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
7206 	if (pid != NULL) {
7207 		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
7208 		if (err)
7209 			goto done;
7210 
7211 		err = got_object_open_as_tree(&ptree, repo,
7212 		    got_object_commit_get_tree_id(pcommit));
7213 		if (err)
7214 			goto done;
7215 	}
7216 
7217 	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
7218 	    got_diff_tree_collect_changed_paths, &paths, 0);
7219 	if (err)
7220 		goto done;
7221 
7222 	err = got_worktree_status(worktree, &paths, repo, 0,
7223 	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
7224 	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
7225 		/*
7226 		 * At least one changed path in the referenced commit is
7227 		 * modified in the work tree, that's all we need to know!
7228 		 */
7229 		err = NULL;
7230 	}
7231 
7232 done:
7233 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
7234 	if (commit)
7235 		got_object_commit_close(commit);
7236 	if (pcommit)
7237 		got_object_commit_close(pcommit);
7238 	if (tree)
7239 		got_object_tree_close(tree);
7240 	if (ptree)
7241 		got_object_tree_close(ptree);
7242 	return err;
7243 }
7244 
7245 /*
7246  * Remove any "logmsg" reference comprised entirely of paths that have
7247  * been reverted in this work tree. If any path in the logmsg ref changeset
7248  * remains in a changed state in the worktree, do not remove the reference.
7249  */
7250 static const struct got_error *
7251 rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
7252 {
7253 	const struct got_error		*err;
7254 	struct got_reflist_head		 refs;
7255 	struct got_reflist_entry	*re;
7256 	struct got_commit_object	*commit = NULL;
7257 	struct got_object_id		*commit_id = NULL;
7258 	struct wt_commitable_path_arg	 wcpa;
7259 	char				*uuidstr = NULL;
7260 
7261 	TAILQ_INIT(&refs);
7262 
7263 	err = got_worktree_get_uuid(&uuidstr, worktree);
7264 	if (err)
7265 		goto done;
7266 
7267 	err = got_ref_list(&refs, repo, "refs/got/worktree",
7268 	    got_ref_cmp_by_name, repo);
7269 	if (err)
7270 		goto done;
7271 
7272 	TAILQ_FOREACH(re, &refs, entry) {
7273 		const char	*refname;
7274 		int		 has_changes = 0;
7275 
7276 		refname = got_ref_get_name(re->ref);
7277 
7278 		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
7279 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
7280 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
7281 		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
7282 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
7283 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
7284 		else
7285 			continue;
7286 
7287 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
7288 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
7289 		else
7290 			continue;
7291 
7292 		err = got_repo_match_object_id(&commit_id, NULL, refname,
7293 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
7294 		if (err)
7295 			goto done;
7296 
7297 		err = got_object_open_as_commit(&commit, repo, commit_id);
7298 		if (err)
7299 			goto done;
7300 
7301 		wcpa.commit_paths = NULL;
7302 		wcpa.has_changes = &has_changes;
7303 
7304 		err = commit_path_changed_in_worktree(&wcpa, commit_id,
7305 		    worktree, repo);
7306 		if (err)
7307 			goto done;
7308 
7309 		if (!has_changes) {
7310 			err = got_ref_delete(re->ref, repo);
7311 			if (err)
7312 				goto done;
7313 		}
7314 
7315 		got_object_commit_close(commit);
7316 		commit = NULL;
7317 		free(commit_id);
7318 		commit_id = NULL;
7319 	}
7320 
7321 done:
7322 	free(uuidstr);
7323 	free(commit_id);
7324 	got_ref_list_free(&refs);
7325 	if (commit)
7326 		got_object_commit_close(commit);
7327 	return err;
7328 }
7329 
7330 static const struct got_error *
7331 cmd_revert(int argc, char *argv[])
7332 {
7333 	const struct got_error *error = NULL;
7334 	struct got_worktree *worktree = NULL;
7335 	struct got_repository *repo = NULL;
7336 	char *cwd = NULL, *path = NULL;
7337 	struct got_pathlist_head paths;
7338 	struct got_pathlist_entry *pe;
7339 	int ch, can_recurse = 0, pflag = 0;
7340 	FILE *patch_script_file = NULL;
7341 	const char *patch_script_path = NULL;
7342 	struct choose_patch_arg cpa;
7343 	int *pack_fds = NULL;
7344 
7345 	TAILQ_INIT(&paths);
7346 
7347 #ifndef PROFILE
7348 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7349 	    "unveil", NULL) == -1)
7350 		err(1, "pledge");
7351 #endif
7352 
7353 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
7354 		switch (ch) {
7355 		case 'F':
7356 			patch_script_path = optarg;
7357 			break;
7358 		case 'p':
7359 			pflag = 1;
7360 			break;
7361 		case 'R':
7362 			can_recurse = 1;
7363 			break;
7364 		default:
7365 			usage_revert();
7366 			/* NOTREACHED */
7367 		}
7368 	}
7369 
7370 	argc -= optind;
7371 	argv += optind;
7372 
7373 	if (argc < 1)
7374 		usage_revert();
7375 	if (patch_script_path && !pflag)
7376 		errx(1, "-F option can only be used together with -p option");
7377 
7378 	cwd = getcwd(NULL, 0);
7379 	if (cwd == NULL) {
7380 		error = got_error_from_errno("getcwd");
7381 		goto done;
7382 	}
7383 
7384 	error = got_repo_pack_fds_open(&pack_fds);
7385 	if (error != NULL)
7386 		goto done;
7387 
7388 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
7389 	if (error) {
7390 		if (error->code == GOT_ERR_NOT_WORKTREE)
7391 			error = wrap_not_worktree_error(error, "revert", cwd);
7392 		goto done;
7393 	}
7394 
7395 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7396 	    NULL, pack_fds);
7397 	if (error != NULL)
7398 		goto done;
7399 
7400 	if (patch_script_path) {
7401 		patch_script_file = fopen(patch_script_path, "re");
7402 		if (patch_script_file == NULL) {
7403 			error = got_error_from_errno2("fopen",
7404 			    patch_script_path);
7405 			goto done;
7406 		}
7407 	}
7408 
7409 	/*
7410 	 * XXX "c" perm needed on repo dir to delete merge references.
7411 	 */
7412 	error = apply_unveil(got_repo_get_path(repo), 0,
7413 	    got_worktree_get_root_path(worktree));
7414 	if (error)
7415 		goto done;
7416 
7417 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7418 	if (error)
7419 		goto done;
7420 
7421 	if (!can_recurse) {
7422 		char *ondisk_path;
7423 		struct stat sb;
7424 		TAILQ_FOREACH(pe, &paths, entry) {
7425 			if (asprintf(&ondisk_path, "%s/%s",
7426 			    got_worktree_get_root_path(worktree),
7427 			    pe->path) == -1) {
7428 				error = got_error_from_errno("asprintf");
7429 				goto done;
7430 			}
7431 			if (lstat(ondisk_path, &sb) == -1) {
7432 				if (errno == ENOENT) {
7433 					free(ondisk_path);
7434 					continue;
7435 				}
7436 				error = got_error_from_errno2("lstat",
7437 				    ondisk_path);
7438 				free(ondisk_path);
7439 				goto done;
7440 			}
7441 			free(ondisk_path);
7442 			if (S_ISDIR(sb.st_mode)) {
7443 				error = got_error_msg(GOT_ERR_BAD_PATH,
7444 				    "reverting directories requires -R option");
7445 				goto done;
7446 			}
7447 		}
7448 	}
7449 
7450 	cpa.patch_script_file = patch_script_file;
7451 	cpa.action = "revert";
7452 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
7453 	    pflag ? choose_patch : NULL, &cpa, repo);
7454 
7455 	error = rm_logmsg_ref(worktree, repo);
7456 done:
7457 	if (patch_script_file && fclose(patch_script_file) == EOF &&
7458 	    error == NULL)
7459 		error = got_error_from_errno2("fclose", patch_script_path);
7460 	if (repo) {
7461 		const struct got_error *close_err = got_repo_close(repo);
7462 		if (error == NULL)
7463 			error = close_err;
7464 	}
7465 	if (worktree)
7466 		got_worktree_close(worktree);
7467 	if (pack_fds) {
7468 		const struct got_error *pack_err =
7469 		    got_repo_pack_fds_close(pack_fds);
7470 		if (error == NULL)
7471 			error = pack_err;
7472 	}
7473 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7474 	free(path);
7475 	free(cwd);
7476 	return error;
7477 }
7478 
7479 __dead static void
7480 usage_commit(void)
7481 {
7482 	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
7483 	    "[-m message] [path ...]\n", getprogname());
7484 	exit(1);
7485 }
7486 
7487 struct collect_commit_logmsg_arg {
7488 	const char *cmdline_log;
7489 	const char *prepared_log;
7490 	const char *merged_log;
7491 	int non_interactive;
7492 	const char *editor;
7493 	const char *worktree_path;
7494 	const char *repo_path;
7495 	const char *dial_proto;
7496 	char *logmsg_path;
7497 };
7498 
7499 static const struct got_error *
7500 read_prepared_logmsg(char **logmsg, const char *path)
7501 {
7502 	const struct got_error *err = NULL;
7503 	FILE *f = NULL;
7504 	struct stat sb;
7505 	size_t r;
7506 
7507 	*logmsg = NULL;
7508 	memset(&sb, 0, sizeof(sb));
7509 
7510 	f = fopen(path, "re");
7511 	if (f == NULL)
7512 		return got_error_from_errno2("fopen", path);
7513 
7514 	if (fstat(fileno(f), &sb) == -1) {
7515 		err = got_error_from_errno2("fstat", path);
7516 		goto done;
7517 	}
7518 	if (sb.st_size == 0) {
7519 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
7520 		goto done;
7521 	}
7522 
7523 	*logmsg = malloc(sb.st_size + 1);
7524 	if (*logmsg == NULL) {
7525 		err = got_error_from_errno("malloc");
7526 		goto done;
7527 	}
7528 
7529 	r = fread(*logmsg, 1, sb.st_size, f);
7530 	if (r != sb.st_size) {
7531 		if (ferror(f))
7532 			err = got_error_from_errno2("fread", path);
7533 		else
7534 			err = got_error(GOT_ERR_IO);
7535 		goto done;
7536 	}
7537 	(*logmsg)[sb.st_size] = '\0';
7538 done:
7539 	if (fclose(f) == EOF && err == NULL)
7540 		err = got_error_from_errno2("fclose", path);
7541 	if (err) {
7542 		free(*logmsg);
7543 		*logmsg = NULL;
7544 	}
7545 	return err;
7546 }
7547 
7548 static const struct got_error *
7549 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
7550     const char *diff_path, char **logmsg, void *arg)
7551 {
7552 	char *initial_content = NULL;
7553 	struct got_pathlist_entry *pe;
7554 	const struct got_error *err = NULL;
7555 	char *template = NULL;
7556 	char *prepared_msg = NULL, *merged_msg = NULL;
7557 	struct collect_commit_logmsg_arg *a = arg;
7558 	int initial_content_len;
7559 	int fd = -1;
7560 	size_t len;
7561 
7562 	/* if a message was specified on the command line, just use it */
7563 	if (a->cmdline_log != NULL && *a->cmdline_log != '\0') {
7564 		len = strlen(a->cmdline_log) + 1;
7565 		*logmsg = malloc(len + 1);
7566 		if (*logmsg == NULL)
7567 			return got_error_from_errno("malloc");
7568 		strlcpy(*logmsg, a->cmdline_log, len);
7569 		return NULL;
7570 	} else if (a->prepared_log != NULL && a->non_interactive)
7571 		return read_prepared_logmsg(logmsg, a->prepared_log);
7572 
7573 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
7574 		return got_error_from_errno("asprintf");
7575 
7576 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
7577 	if (err)
7578 		goto done;
7579 
7580 	if (a->prepared_log) {
7581 		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
7582 		if (err)
7583 			goto done;
7584 	} else if (a->merged_log) {
7585 		err = read_prepared_logmsg(&merged_msg, a->merged_log);
7586 		if (err)
7587 			goto done;
7588 	}
7589 
7590 	initial_content_len = asprintf(&initial_content,
7591 	    "%s%s\n# changes to be committed:\n",
7592 	    prepared_msg ? prepared_msg : "",
7593 	    merged_msg ? merged_msg : "");
7594 	if (initial_content_len == -1) {
7595 		err = got_error_from_errno("asprintf");
7596 		goto done;
7597 	}
7598 
7599 	if (write(fd, initial_content, initial_content_len) == -1) {
7600 		err = got_error_from_errno2("write", a->logmsg_path);
7601 		goto done;
7602 	}
7603 
7604 	TAILQ_FOREACH(pe, commitable_paths, entry) {
7605 		struct got_commitable *ct = pe->data;
7606 		dprintf(fd, "#  %c  %s\n",
7607 		    got_commitable_get_status(ct),
7608 		    got_commitable_get_path(ct));
7609 	}
7610 
7611 	if (diff_path) {
7612 		dprintf(fd, "# detailed changes can be viewed in %s\n",
7613 		    diff_path);
7614 	}
7615 
7616 	if (close(fd) == -1) {
7617 		err = got_error_from_errno2("close", a->logmsg_path);
7618 		goto done;
7619 	}
7620 	fd = -1;
7621 
7622 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
7623 	    initial_content_len, a->prepared_log ? 0 : 1);
7624 done:
7625 	free(initial_content);
7626 	free(template);
7627 	free(prepared_msg);
7628 	free(merged_msg);
7629 
7630 	if (fd != -1 && close(fd) == -1 && err == NULL)
7631 		err = got_error_from_errno2("close", a->logmsg_path);
7632 
7633 	/* Editor is done; we can now apply unveil(2) */
7634 	if (err == NULL)
7635 		err = got_dial_apply_unveil(a->dial_proto);
7636 	if (err == NULL)
7637 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
7638 	if (err) {
7639 		free(*logmsg);
7640 		*logmsg = NULL;
7641 	}
7642 	return err;
7643 }
7644 
7645 static const struct got_error *
7646 cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
7647     const char *type, int has_content)
7648 {
7649 	const struct got_error	*err = NULL;
7650 	char			*logmsg = NULL;
7651 
7652 	err = got_object_commit_get_logmsg(&logmsg, commit);
7653 	if (err)
7654 		return err;
7655 
7656 	if (fprintf(f, "%s# log message of %s commit %s:%s",
7657 	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
7658 		err = got_ferror(f, GOT_ERR_IO);
7659 
7660 	free(logmsg);
7661 	return err;
7662 }
7663 
7664 /*
7665  * Lookup "logmsg" references of backed-out and cherrypicked commits
7666  * belonging to the current work tree. If found, and the worktree has
7667  * at least one modified file that was changed in the referenced commit,
7668  * add its log message to a new temporary file at *logmsg_path.
7669  * Add all refs found to matched_refs to be scheduled for removal on
7670  * successful commit.
7671  */
7672 static const struct got_error *
7673 lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
7674     struct got_reflist_head *matched_refs, struct got_worktree *worktree,
7675     struct got_repository *repo)
7676 {
7677 	const struct got_error		*err;
7678 	struct got_commit_object	*commit = NULL;
7679 	struct got_object_id		*id = NULL;
7680 	struct got_reflist_head		 refs;
7681 	struct got_reflist_entry	*re, *re_match;
7682 	FILE				*f = NULL;
7683 	char				*uuidstr = NULL;
7684 	int				 added_logmsg = 0;
7685 
7686 	TAILQ_INIT(&refs);
7687 
7688 	*logmsg_path = NULL;
7689 
7690 	err = got_worktree_get_uuid(&uuidstr, worktree);
7691 	if (err)
7692 		goto done;
7693 
7694 	err = got_ref_list(&refs, repo, "refs/got/worktree",
7695 	    got_ref_cmp_by_name, repo);
7696 	if (err)
7697 		goto done;
7698 
7699 	TAILQ_FOREACH(re, &refs, entry) {
7700 		const char			*refname, *type;
7701 		struct wt_commitable_path_arg	 wcpa;
7702 		int				 add_logmsg = 0;
7703 
7704 		refname = got_ref_get_name(re->ref);
7705 
7706 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
7707 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
7708 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
7709 			type = "cherrypicked";
7710 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
7711 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
7712 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
7713 			type = "backed-out";
7714 		} else
7715 			continue;
7716 
7717 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
7718 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
7719 		else
7720 			continue;
7721 
7722 		err = got_repo_match_object_id(&id, NULL, refname,
7723 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
7724 		if (err)
7725 			goto done;
7726 
7727 		err = got_object_open_as_commit(&commit, repo, id);
7728 		if (err)
7729 			goto done;
7730 
7731 		wcpa.commit_paths = paths;
7732 		wcpa.has_changes = &add_logmsg;
7733 
7734 		err = commit_path_changed_in_worktree(&wcpa, id,
7735 		    worktree, repo);
7736 		if (err)
7737 			goto done;
7738 
7739 		if (add_logmsg) {
7740 			if (f == NULL) {
7741 				err = got_opentemp_named(logmsg_path, &f,
7742 				    "got-commit-logmsg", "");
7743 				if (err)
7744 					goto done;
7745 			}
7746 			err = cat_logmsg(f, commit, refname, type,
7747 			    added_logmsg);
7748 			if (err)
7749 				goto done;
7750 			if (!added_logmsg)
7751 				++added_logmsg;
7752 
7753 			err = got_reflist_entry_dup(&re_match, re);
7754 			if (err)
7755 				goto done;
7756 			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
7757 		}
7758 
7759 		got_object_commit_close(commit);
7760 		commit = NULL;
7761 		free(id);
7762 		id = NULL;
7763 	}
7764 
7765 done:
7766 	free(id);
7767 	free(uuidstr);
7768 	got_ref_list_free(&refs);
7769 	if (commit)
7770 		got_object_commit_close(commit);
7771 	if (f && fclose(f) == EOF && err == NULL)
7772 		err = got_error_from_errno("fclose");
7773 	if (!added_logmsg) {
7774 		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
7775 			err = got_error_from_errno2("unlink", *logmsg_path);
7776 		*logmsg_path = NULL;
7777 	}
7778 	return err;
7779 }
7780 
7781 static const struct got_error *
7782 cmd_commit(int argc, char *argv[])
7783 {
7784 	const struct got_error *error = NULL;
7785 	struct got_worktree *worktree = NULL;
7786 	struct got_repository *repo = NULL;
7787 	char *cwd = NULL, *id_str = NULL;
7788 	struct got_object_id *id = NULL;
7789 	const char *logmsg = NULL;
7790 	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
7791 	struct collect_commit_logmsg_arg cl_arg;
7792 	const char *author = NULL;
7793 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
7794 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
7795 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
7796 	int show_diff = 1, commit_conflicts = 0;
7797 	struct got_pathlist_head paths;
7798 	struct got_reflist_head refs;
7799 	struct got_reflist_entry *re;
7800 	int *pack_fds = NULL;
7801 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
7802 	const struct got_remote_repo *remotes, *remote = NULL;
7803 	int nremotes;
7804 	char *proto = NULL, *host = NULL, *port = NULL;
7805 	char *repo_name = NULL, *server_path = NULL;
7806 	const char *remote_name;
7807 	int verbosity = 0;
7808 	int i;
7809 
7810 	TAILQ_INIT(&refs);
7811 	TAILQ_INIT(&paths);
7812 	cl_arg.logmsg_path = NULL;
7813 
7814 #ifndef PROFILE
7815 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7816 	    "unveil", NULL) == -1)
7817 		err(1, "pledge");
7818 #endif
7819 
7820 	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
7821 		switch (ch) {
7822 		case 'A':
7823 			author = optarg;
7824 			error = valid_author(author);
7825 			if (error)
7826 				return error;
7827 			break;
7828 		case 'C':
7829 			commit_conflicts = 1;
7830 			break;
7831 		case 'F':
7832 			if (logmsg != NULL)
7833 				option_conflict('F', 'm');
7834 			prepared_logmsg = realpath(optarg, NULL);
7835 			if (prepared_logmsg == NULL)
7836 				return got_error_from_errno2("realpath",
7837 				    optarg);
7838 			break;
7839 		case 'm':
7840 			if (prepared_logmsg)
7841 				option_conflict('m', 'F');
7842 			logmsg = optarg;
7843 			break;
7844 		case 'N':
7845 			non_interactive = 1;
7846 			break;
7847 		case 'n':
7848 			show_diff = 0;
7849 			break;
7850 		case 'S':
7851 			allow_bad_symlinks = 1;
7852 			break;
7853 		default:
7854 			usage_commit();
7855 			/* NOTREACHED */
7856 		}
7857 	}
7858 
7859 	argc -= optind;
7860 	argv += optind;
7861 
7862 	cwd = getcwd(NULL, 0);
7863 	if (cwd == NULL) {
7864 		error = got_error_from_errno("getcwd");
7865 		goto done;
7866 	}
7867 
7868 	error = got_repo_pack_fds_open(&pack_fds);
7869 	if (error != NULL)
7870 		goto done;
7871 
7872 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
7873 	if (error) {
7874 		if (error->code == GOT_ERR_NOT_WORKTREE)
7875 			error = wrap_not_worktree_error(error, "commit", cwd);
7876 		goto done;
7877 	}
7878 
7879 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
7880 	if (error)
7881 		goto done;
7882 	if (rebase_in_progress) {
7883 		error = got_error(GOT_ERR_REBASING);
7884 		goto done;
7885 	}
7886 
7887 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
7888 	    worktree);
7889 	if (error)
7890 		goto done;
7891 
7892 	error = get_gitconfig_path(&gitconfig_path);
7893 	if (error)
7894 		goto done;
7895 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7896 	    gitconfig_path, pack_fds);
7897 	if (error != NULL)
7898 		goto done;
7899 
7900 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
7901 	if (error)
7902 		goto done;
7903 	if (merge_in_progress) {
7904 		error = got_error(GOT_ERR_MERGE_BUSY);
7905 		goto done;
7906 	}
7907 
7908 	error = get_author(&committer, repo, worktree);
7909 	if (error)
7910 		goto done;
7911 
7912 	if (author == NULL)
7913 		author = committer;
7914 
7915 	remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
7916 	worktree_conf = got_worktree_get_gotconfig(worktree);
7917 	if (worktree_conf) {
7918 		got_gotconfig_get_remotes(&nremotes, &remotes,
7919 		    worktree_conf);
7920 		for (i = 0; i < nremotes; i++) {
7921 			if (strcmp(remotes[i].name, remote_name) == 0) {
7922 				remote = &remotes[i];
7923 				break;
7924 			}
7925 		}
7926 	}
7927 	if (remote == NULL) {
7928 		repo_conf = got_repo_get_gotconfig(repo);
7929 		if (repo_conf) {
7930 			got_gotconfig_get_remotes(&nremotes, &remotes,
7931 			    repo_conf);
7932 			for (i = 0; i < nremotes; i++) {
7933 				if (strcmp(remotes[i].name, remote_name) == 0) {
7934 					remote = &remotes[i];
7935 					break;
7936 				}
7937 			}
7938 		}
7939 	}
7940 	if (remote == NULL) {
7941 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
7942 		for (i = 0; i < nremotes; i++) {
7943 			if (strcmp(remotes[i].name, remote_name) == 0) {
7944 				remote = &remotes[i];
7945 				break;
7946 			}
7947 		}
7948 	}
7949 	if (remote == NULL) {
7950 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
7951 		goto done;
7952 	}
7953 
7954 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
7955 	    &repo_name, remote->fetch_url);
7956 	if (error)
7957 		goto done;
7958 
7959 	if (strcmp(proto, "git") == 0) {
7960 #ifndef PROFILE
7961 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7962 		    "sendfd dns inet unveil", NULL) == -1)
7963 			err(1, "pledge");
7964 #endif
7965 	} else if (strcmp(proto, "git+ssh") == 0 ||
7966 	    strcmp(proto, "ssh") == 0) {
7967 #ifndef PROFILE
7968 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7969 		    "sendfd unveil", NULL) == -1)
7970 			err(1, "pledge");
7971 #endif
7972 	} else if (strcmp(proto, "http") == 0 ||
7973 	    strcmp(proto, "git+http") == 0) {
7974 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
7975 		goto done;
7976 	} else {
7977 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
7978 		goto done;
7979 	}
7980 
7981 
7982 	/*if (verbosity >= 0) {
7983 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
7984 		    remote->name, proto, host,
7985 		    port ? ":" : "", port ? port : "",
7986 		    *server_path == '/' ? "" : "/", server_path);
7987 	}*/
7988 
7989 	/*
7990 	 * unveil(2) traverses exec(2); if an editor is used we have
7991 	 * to apply unveil after the log message has been written during
7992 	 * the callback.
7993 	 */
7994 	if (logmsg == NULL || strlen(logmsg) == 0)
7995 		error = get_editor(&editor);
7996 	else {
7997 		error = got_dial_apply_unveil(proto);
7998 		if (error)
7999 			goto done;
8000 		error = apply_unveil(got_repo_get_path(repo), 0,
8001 		    got_worktree_get_root_path(worktree));
8002 	}
8003 	if (error)
8004 		goto done;
8005 
8006 	if (prepared_logmsg == NULL) {
8007 		error = lookup_logmsg_ref(&merged_logmsg,
8008 		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
8009 		if (error)
8010 			goto done;
8011 	}
8012 
8013 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8014 	if (error)
8015 		goto done;
8016 
8017 	cl_arg.editor = editor;
8018 	cl_arg.cmdline_log = logmsg;
8019 	cl_arg.prepared_log = prepared_logmsg;
8020 	cl_arg.merged_log = merged_logmsg;
8021 	cl_arg.non_interactive = non_interactive;
8022 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
8023 	cl_arg.repo_path = got_repo_get_path(repo);
8024 	cl_arg.dial_proto = proto;
8025 	error = got_worktree_cvg_commit(&id, worktree, &paths, author,
8026 	    committer, allow_bad_symlinks, show_diff, commit_conflicts,
8027 	    collect_commit_logmsg, &cl_arg, print_status, NULL, proto, host,
8028 	    port, server_path, verbosity, remote, check_cancelled, repo);
8029 	if (error) {
8030 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
8031 		    cl_arg.logmsg_path != NULL)
8032 			preserve_logmsg = 1;
8033 		goto done;
8034 	}
8035 
8036 	error = got_object_id_str(&id_str, id);
8037 	if (error)
8038 		goto done;
8039 	printf("Created commit %s\n", id_str);
8040 
8041 	TAILQ_FOREACH(re, &refs, entry) {
8042 		error = got_ref_delete(re->ref, repo);
8043 		if (error)
8044 			goto done;
8045 	}
8046 
8047 done:
8048 	if (preserve_logmsg) {
8049 		fprintf(stderr, "%s: log message preserved in %s\n",
8050 		    getprogname(), cl_arg.logmsg_path);
8051 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
8052 	    error == NULL)
8053 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
8054 	free(cl_arg.logmsg_path);
8055 	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
8056 		error = got_error_from_errno2("unlink", merged_logmsg);
8057 	free(merged_logmsg);
8058 	if (repo) {
8059 		const struct got_error *close_err = got_repo_close(repo);
8060 		if (error == NULL)
8061 			error = close_err;
8062 	}
8063 	if (worktree)
8064 		got_worktree_close(worktree);
8065 	if (pack_fds) {
8066 		const struct got_error *pack_err =
8067 		    got_repo_pack_fds_close(pack_fds);
8068 		if (error == NULL)
8069 			error = pack_err;
8070 	}
8071 	got_ref_list_free(&refs);
8072 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8073 	free(cwd);
8074 	free(id_str);
8075 	free(gitconfig_path);
8076 	free(editor);
8077 	free(committer);
8078 	free(prepared_logmsg);
8079 	return error;
8080 }
8081 
8082 /*
8083  * Print and if delete is set delete all ref_prefix references.
8084  * If wanted_ref is not NULL, only print or delete this reference.
8085  */
8086 static const struct got_error *
8087 process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
8088     const char *wanted_ref, int delete, struct got_worktree *worktree,
8089     struct got_repository *repo)
8090 {
8091 	const struct got_error			*err;
8092 	struct got_pathlist_head		 paths;
8093 	struct got_reflist_head			 refs;
8094 	struct got_reflist_entry		*re;
8095 	struct got_reflist_object_id_map	*refs_idmap = NULL;
8096 	struct got_commit_object		*commit = NULL;
8097 	struct got_object_id			*id = NULL;
8098 	const char				*header_prefix;
8099 	char					*uuidstr = NULL;
8100 	int					 found = 0;
8101 
8102 	TAILQ_INIT(&refs);
8103 	TAILQ_INIT(&paths);
8104 
8105 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
8106 	if (err)
8107 		goto done;
8108 
8109 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
8110 	if (err)
8111 		goto done;
8112 
8113 	if (worktree != NULL) {
8114 		err = got_worktree_get_uuid(&uuidstr, worktree);
8115 		if (err)
8116 			goto done;
8117 	}
8118 
8119 	if (wanted_ref) {
8120 		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
8121 			wanted_ref += 11;
8122 	}
8123 
8124 	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
8125 		header_prefix = "backout";
8126 	else
8127 		header_prefix = "cherrypick";
8128 
8129 	TAILQ_FOREACH(re, &refs, entry) {
8130 		const char *refname, *wt;
8131 
8132 		refname = got_ref_get_name(re->ref);
8133 
8134 		err = check_cancelled(NULL);
8135 		if (err)
8136 			goto done;
8137 
8138 		if (strncmp(refname, ref_prefix, prefix_len) == 0)
8139 			refname += prefix_len + 1;  /* skip '-' delimiter */
8140 		else
8141 			continue;
8142 
8143 		wt = refname;
8144 
8145 		if (worktree == NULL || strncmp(refname, uuidstr,
8146 		    GOT_WORKTREE_UUID_STRLEN) == 0)
8147 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
8148 		else
8149 			continue;
8150 
8151 		err = got_repo_match_object_id(&id, NULL, refname,
8152 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8153 		if (err)
8154 			goto done;
8155 
8156 		err = got_object_open_as_commit(&commit, repo, id);
8157 		if (err)
8158 			goto done;
8159 
8160 		if (wanted_ref)
8161 			found = strncmp(wanted_ref, refname,
8162 			    strlen(wanted_ref)) == 0;
8163 		if (wanted_ref && !found) {
8164 			struct got_reflist_head	*ci_refs;
8165 
8166 			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
8167 			    id);
8168 
8169 			if (ci_refs) {
8170 				char		*refs_str = NULL;
8171 				char const	*r = NULL;
8172 
8173 				err = build_refs_str(&refs_str, ci_refs, id,
8174 				    repo, 1);
8175 				if (err)
8176 					goto done;
8177 
8178 				r = refs_str;
8179 				while (r) {
8180 					if (strncmp(r, wanted_ref,
8181 					    strlen(wanted_ref)) == 0) {
8182 						found = 1;
8183 						break;
8184 					}
8185 					r = strchr(r, ' ');
8186 					if (r)
8187 						++r;
8188 				}
8189 				free(refs_str);
8190 			}
8191 		}
8192 
8193 		if (wanted_ref == NULL || found) {
8194 			if (delete) {
8195 				err = got_ref_delete(re->ref, repo);
8196 				if (err)
8197 					goto done;
8198 				printf("Deleted: ");
8199 				err = print_commit_oneline(commit, id, repo,
8200 				    refs_idmap);
8201 			} else {
8202 				/*
8203 				 * Print paths modified by commit to help
8204 				 * associate commits with worktree changes.
8205 				 */
8206 				err = get_changed_paths(&paths, commit,
8207 				    repo, NULL);
8208 				if (err)
8209 					goto done;
8210 
8211 				err = print_commit(commit, id, repo, NULL,
8212 				    &paths, NULL, 0, 0, refs_idmap, NULL,
8213 				    header_prefix);
8214 				got_pathlist_free(&paths,
8215 				    GOT_PATHLIST_FREE_ALL);
8216 
8217 				if (worktree == NULL)
8218 					printf("work tree: %.*s\n\n",
8219 					    GOT_WORKTREE_UUID_STRLEN, wt);
8220 			}
8221 			if (err || found)
8222 				goto done;
8223 		}
8224 
8225 		got_object_commit_close(commit);
8226 		commit = NULL;
8227 		free(id);
8228 		id = NULL;
8229 	}
8230 
8231 	if (wanted_ref != NULL && !found)
8232 		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
8233 
8234 done:
8235 	free(id);
8236 	free(uuidstr);
8237 	got_ref_list_free(&refs);
8238 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
8239 	if (refs_idmap)
8240 		got_reflist_object_id_map_free(refs_idmap);
8241 	if (commit)
8242 		got_object_commit_close(commit);
8243 	return err;
8244 }
8245 
8246 /*
8247  * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
8248  * identified by id for log messages to prepopulate the editor on commit.
8249  */
8250 static const struct got_error *
8251 logmsg_ref(struct got_object_id *id, const char *prefix,
8252     struct got_worktree *worktree, struct got_repository *repo)
8253 {
8254 	const struct got_error	*err = NULL;
8255 	char			*idstr, *ref = NULL, *refname = NULL;
8256 	int			 histedit_in_progress;
8257 	int			 rebase_in_progress, merge_in_progress;
8258 
8259 	/*
8260 	 * Silenty refuse to create merge reference if any histedit, merge,
8261 	 * or rebase operation is in progress.
8262 	 */
8263 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
8264 	    worktree);
8265 	if (err)
8266 		return err;
8267 	if (histedit_in_progress)
8268 		return NULL;
8269 
8270 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
8271 	if (err)
8272 		return err;
8273 	if (rebase_in_progress)
8274 		return NULL;
8275 
8276 	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
8277 	    repo);
8278 	if (err)
8279 		return err;
8280 	if (merge_in_progress)
8281 		return NULL;
8282 
8283 	err = got_object_id_str(&idstr, id);
8284 	if (err)
8285 		return err;
8286 
8287 	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
8288 	if (err)
8289 		goto done;
8290 
8291 	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
8292 		err = got_error_from_errno("asprintf");
8293 		goto done;
8294 	}
8295 
8296 	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
8297 	    -1, repo);
8298 done:
8299 	free(ref);
8300 	free(idstr);
8301 	free(refname);
8302 	return err;
8303 }
8304 
8305 __dead static void
8306 usage_cherrypick(void)
8307 {
8308 	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
8309 	    getprogname());
8310 	exit(1);
8311 }
8312 
8313 static const struct got_error *
8314 cmd_cherrypick(int argc, char *argv[])
8315 {
8316 	const struct got_error *error = NULL;
8317 	struct got_worktree *worktree = NULL;
8318 	struct got_repository *repo = NULL;
8319 	char *cwd = NULL, *commit_id_str = NULL;
8320 	struct got_object_id *commit_id = NULL;
8321 	struct got_commit_object *commit = NULL;
8322 	struct got_object_qid *pid;
8323 	int ch, list_refs = 0, remove_refs = 0;
8324 	struct got_update_progress_arg upa;
8325 	int *pack_fds = NULL;
8326 
8327 #ifndef PROFILE
8328 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8329 	    "unveil", NULL) == -1)
8330 		err(1, "pledge");
8331 #endif
8332 
8333 	while ((ch = getopt(argc, argv, "lX")) != -1) {
8334 		switch (ch) {
8335 		case 'l':
8336 			list_refs = 1;
8337 			break;
8338 		case 'X':
8339 			remove_refs = 1;
8340 			break;
8341 		default:
8342 			usage_cherrypick();
8343 			/* NOTREACHED */
8344 		}
8345 	}
8346 
8347 	argc -= optind;
8348 	argv += optind;
8349 
8350 	if (list_refs || remove_refs) {
8351 		if (argc != 0 && argc != 1)
8352 			usage_cherrypick();
8353 	} else if (argc != 1)
8354 		usage_cherrypick();
8355 	if (list_refs && remove_refs)
8356 		option_conflict('l', 'X');
8357 
8358 	cwd = getcwd(NULL, 0);
8359 	if (cwd == NULL) {
8360 		error = got_error_from_errno("getcwd");
8361 		goto done;
8362 	}
8363 
8364 	error = got_repo_pack_fds_open(&pack_fds);
8365 	if (error != NULL)
8366 		goto done;
8367 
8368 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
8369 	if (error) {
8370 		if (list_refs || remove_refs) {
8371 			if (error->code != GOT_ERR_NOT_WORKTREE)
8372 				goto done;
8373 		} else {
8374 			if (error->code == GOT_ERR_NOT_WORKTREE)
8375 				error = wrap_not_worktree_error(error,
8376 				    "cherrypick", cwd);
8377 			goto done;
8378 		}
8379 	}
8380 
8381 	error = got_repo_open(&repo,
8382 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
8383 	    NULL, pack_fds);
8384 	if (error != NULL)
8385 		goto done;
8386 
8387 	error = apply_unveil(got_repo_get_path(repo), 0,
8388 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
8389 	if (error)
8390 		goto done;
8391 
8392 	if (list_refs || remove_refs) {
8393 		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8394 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
8395 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
8396 		goto done;
8397 	}
8398 
8399 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
8400 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8401 	if (error)
8402 		goto done;
8403 	error = got_object_id_str(&commit_id_str, commit_id);
8404 	if (error)
8405 		goto done;
8406 
8407 	error = got_object_open_as_commit(&commit, repo, commit_id);
8408 	if (error)
8409 		goto done;
8410 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8411 	memset(&upa, 0, sizeof(upa));
8412 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
8413 	    commit_id, repo, update_progress, &upa, check_cancelled,
8414 	    NULL);
8415 	if (error != NULL)
8416 		goto done;
8417 
8418 	if (upa.did_something) {
8419 		error = logmsg_ref(commit_id,
8420 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
8421 		if (error)
8422 			goto done;
8423 		printf("Merged commit %s\n", commit_id_str);
8424 	}
8425 	print_merge_progress_stats(&upa);
8426 done:
8427 	free(cwd);
8428 	if (commit)
8429 		got_object_commit_close(commit);
8430 	free(commit_id_str);
8431 	if (worktree)
8432 		got_worktree_close(worktree);
8433 	if (repo) {
8434 		const struct got_error *close_err = got_repo_close(repo);
8435 		if (error == NULL)
8436 			error = close_err;
8437 	}
8438 	if (pack_fds) {
8439 		const struct got_error *pack_err =
8440 		    got_repo_pack_fds_close(pack_fds);
8441 		if (error == NULL)
8442 			error = pack_err;
8443 	}
8444 
8445 	return error;
8446 }
8447 
8448 __dead static void
8449 usage_backout(void)
8450 {
8451 	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
8452 	exit(1);
8453 }
8454 
8455 static const struct got_error *
8456 cmd_backout(int argc, char *argv[])
8457 {
8458 	const struct got_error *error = NULL;
8459 	struct got_worktree *worktree = NULL;
8460 	struct got_repository *repo = NULL;
8461 	char *cwd = NULL, *commit_id_str = NULL;
8462 	struct got_object_id *commit_id = NULL;
8463 	struct got_commit_object *commit = NULL;
8464 	struct got_object_qid *pid;
8465 	int ch, list_refs = 0, remove_refs = 0;
8466 	struct got_update_progress_arg upa;
8467 	int *pack_fds = NULL;
8468 
8469 #ifndef PROFILE
8470 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8471 	    "unveil", NULL) == -1)
8472 		err(1, "pledge");
8473 #endif
8474 
8475 	while ((ch = getopt(argc, argv, "lX")) != -1) {
8476 		switch (ch) {
8477 		case 'l':
8478 			list_refs = 1;
8479 			break;
8480 		case 'X':
8481 			remove_refs = 1;
8482 			break;
8483 		default:
8484 			usage_backout();
8485 			/* NOTREACHED */
8486 		}
8487 	}
8488 
8489 	argc -= optind;
8490 	argv += optind;
8491 
8492 	if (list_refs || remove_refs) {
8493 		if (argc != 0 && argc != 1)
8494 			usage_backout();
8495 	} else if (argc != 1)
8496 		usage_backout();
8497 	if (list_refs && remove_refs)
8498 		option_conflict('l', 'X');
8499 
8500 	cwd = getcwd(NULL, 0);
8501 	if (cwd == NULL) {
8502 		error = got_error_from_errno("getcwd");
8503 		goto done;
8504 	}
8505 
8506 	error = got_repo_pack_fds_open(&pack_fds);
8507 	if (error != NULL)
8508 		goto done;
8509 
8510 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
8511 	if (error) {
8512 		if (list_refs || remove_refs) {
8513 			if (error->code != GOT_ERR_NOT_WORKTREE)
8514 				goto done;
8515 		} else {
8516 			if (error->code == GOT_ERR_NOT_WORKTREE)
8517 				error = wrap_not_worktree_error(error,
8518 				    "backout", cwd);
8519 			goto done;
8520 		}
8521 	}
8522 
8523 	error = got_repo_open(&repo,
8524 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
8525 	    NULL, pack_fds);
8526 	if (error != NULL)
8527 		goto done;
8528 
8529 	error = apply_unveil(got_repo_get_path(repo), 0,
8530 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
8531 	if (error)
8532 		goto done;
8533 
8534 	if (list_refs || remove_refs) {
8535 		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
8536 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
8537 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
8538 		goto done;
8539 	}
8540 
8541 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
8542 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8543 	if (error)
8544 		goto done;
8545 	error = got_object_id_str(&commit_id_str, commit_id);
8546 	if (error)
8547 		goto done;
8548 
8549 	error = got_object_open_as_commit(&commit, repo, commit_id);
8550 	if (error)
8551 		goto done;
8552 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8553 	if (pid == NULL) {
8554 		error = got_error(GOT_ERR_ROOT_COMMIT);
8555 		goto done;
8556 	}
8557 
8558 	memset(&upa, 0, sizeof(upa));
8559 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
8560 	    repo, update_progress, &upa, check_cancelled, NULL);
8561 	if (error != NULL)
8562 		goto done;
8563 
8564 	if (upa.did_something) {
8565 		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
8566 		    worktree, repo);
8567 		if (error)
8568 			goto done;
8569 		printf("Backed out commit %s\n", commit_id_str);
8570 	}
8571 	print_merge_progress_stats(&upa);
8572 done:
8573 	free(cwd);
8574 	if (commit)
8575 		got_object_commit_close(commit);
8576 	free(commit_id_str);
8577 	if (worktree)
8578 		got_worktree_close(worktree);
8579 	if (repo) {
8580 		const struct got_error *close_err = got_repo_close(repo);
8581 		if (error == NULL)
8582 			error = close_err;
8583 	}
8584 	if (pack_fds) {
8585 		const struct got_error *pack_err =
8586 		    got_repo_pack_fds_close(pack_fds);
8587 		if (error == NULL)
8588 			error = pack_err;
8589 	}
8590 	return error;
8591 }
8592 
8593 __dead static void
8594 usage_cat(void)
8595 {
8596 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
8597 	    "arg ...\n", getprogname());
8598 	exit(1);
8599 }
8600 
8601 static const struct got_error *
8602 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8603 {
8604 	const struct got_error *err;
8605 	struct got_blob_object *blob;
8606 	int fd = -1;
8607 
8608 	fd = got_opentempfd();
8609 	if (fd == -1)
8610 		return got_error_from_errno("got_opentempfd");
8611 
8612 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
8613 	if (err)
8614 		goto done;
8615 
8616 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
8617 done:
8618 	if (fd != -1 && close(fd) == -1 && err == NULL)
8619 		err = got_error_from_errno("close");
8620 	if (blob)
8621 		got_object_blob_close(blob);
8622 	return err;
8623 }
8624 
8625 static const struct got_error *
8626 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8627 {
8628 	const struct got_error *err;
8629 	struct got_tree_object *tree;
8630 	int nentries, i;
8631 
8632 	err = got_object_open_as_tree(&tree, repo, id);
8633 	if (err)
8634 		return err;
8635 
8636 	nentries = got_object_tree_get_nentries(tree);
8637 	for (i = 0; i < nentries; i++) {
8638 		struct got_tree_entry *te;
8639 		char *id_str;
8640 		if (sigint_received || sigpipe_received)
8641 			break;
8642 		te = got_object_tree_get_entry(tree, i);
8643 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
8644 		if (err)
8645 			break;
8646 		fprintf(outfile, "%s %.7o %s\n", id_str,
8647 		    got_tree_entry_get_mode(te),
8648 		    got_tree_entry_get_name(te));
8649 		free(id_str);
8650 	}
8651 
8652 	got_object_tree_close(tree);
8653 	return err;
8654 }
8655 
8656 static const struct got_error *
8657 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8658 {
8659 	const struct got_error *err;
8660 	struct got_commit_object *commit;
8661 	const struct got_object_id_queue *parent_ids;
8662 	struct got_object_qid *pid;
8663 	char *id_str = NULL;
8664 	const char *logmsg = NULL;
8665 	char gmtoff[6];
8666 
8667 	err = got_object_open_as_commit(&commit, repo, id);
8668 	if (err)
8669 		return err;
8670 
8671 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
8672 	if (err)
8673 		goto done;
8674 
8675 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
8676 	parent_ids = got_object_commit_get_parent_ids(commit);
8677 	fprintf(outfile, "numparents %d\n",
8678 	    got_object_commit_get_nparents(commit));
8679 	STAILQ_FOREACH(pid, parent_ids, entry) {
8680 		char *pid_str;
8681 		err = got_object_id_str(&pid_str, &pid->id);
8682 		if (err)
8683 			goto done;
8684 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
8685 		free(pid_str);
8686 	}
8687 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
8688 	    got_object_commit_get_author_gmtoff(commit));
8689 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
8690 	    got_object_commit_get_author(commit),
8691 	    (long long)got_object_commit_get_author_time(commit),
8692 	    gmtoff);
8693 
8694 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
8695 	    got_object_commit_get_committer_gmtoff(commit));
8696 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
8697 	    got_object_commit_get_committer(commit),
8698 	    (long long)got_object_commit_get_committer_time(commit),
8699 	    gmtoff);
8700 
8701 	logmsg = got_object_commit_get_logmsg_raw(commit);
8702 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
8703 	fprintf(outfile, "%s", logmsg);
8704 done:
8705 	free(id_str);
8706 	got_object_commit_close(commit);
8707 	return err;
8708 }
8709 
8710 static const struct got_error *
8711 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
8712 {
8713 	const struct got_error *err;
8714 	struct got_tag_object *tag;
8715 	char *id_str = NULL;
8716 	const char *tagmsg = NULL;
8717 	char gmtoff[6];
8718 
8719 	err = got_object_open_as_tag(&tag, repo, id);
8720 	if (err)
8721 		return err;
8722 
8723 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
8724 	if (err)
8725 		goto done;
8726 
8727 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
8728 
8729 	switch (got_object_tag_get_object_type(tag)) {
8730 	case GOT_OBJ_TYPE_BLOB:
8731 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8732 		    GOT_OBJ_LABEL_BLOB);
8733 		break;
8734 	case GOT_OBJ_TYPE_TREE:
8735 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8736 		    GOT_OBJ_LABEL_TREE);
8737 		break;
8738 	case GOT_OBJ_TYPE_COMMIT:
8739 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8740 		    GOT_OBJ_LABEL_COMMIT);
8741 		break;
8742 	case GOT_OBJ_TYPE_TAG:
8743 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
8744 		    GOT_OBJ_LABEL_TAG);
8745 		break;
8746 	default:
8747 		break;
8748 	}
8749 
8750 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
8751 	    got_object_tag_get_name(tag));
8752 
8753 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
8754 	    got_object_tag_get_tagger_gmtoff(tag));
8755 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
8756 	    got_object_tag_get_tagger(tag),
8757 	    (long long)got_object_tag_get_tagger_time(tag),
8758 	    gmtoff);
8759 
8760 	tagmsg = got_object_tag_get_message(tag);
8761 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
8762 	fprintf(outfile, "%s", tagmsg);
8763 done:
8764 	free(id_str);
8765 	got_object_tag_close(tag);
8766 	return err;
8767 }
8768 
8769 static const struct got_error *
8770 cmd_cat(int argc, char *argv[])
8771 {
8772 	const struct got_error *error;
8773 	struct got_repository *repo = NULL;
8774 	struct got_worktree *worktree = NULL;
8775 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
8776 	const char *commit_id_str = NULL;
8777 	struct got_object_id *id = NULL, *commit_id = NULL;
8778 	struct got_commit_object *commit = NULL;
8779 	int ch, obj_type, i, force_path = 0;
8780 	struct got_reflist_head refs;
8781 	int *pack_fds = NULL;
8782 
8783 	TAILQ_INIT(&refs);
8784 
8785 #ifndef PROFILE
8786 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
8787 	    NULL) == -1)
8788 		err(1, "pledge");
8789 #endif
8790 
8791 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
8792 		switch (ch) {
8793 		case 'c':
8794 			commit_id_str = optarg;
8795 			break;
8796 		case 'P':
8797 			force_path = 1;
8798 			break;
8799 		case 'r':
8800 			repo_path = realpath(optarg, NULL);
8801 			if (repo_path == NULL)
8802 				return got_error_from_errno2("realpath",
8803 				    optarg);
8804 			got_path_strip_trailing_slashes(repo_path);
8805 			break;
8806 		default:
8807 			usage_cat();
8808 			/* NOTREACHED */
8809 		}
8810 	}
8811 
8812 	argc -= optind;
8813 	argv += optind;
8814 
8815 	cwd = getcwd(NULL, 0);
8816 	if (cwd == NULL) {
8817 		error = got_error_from_errno("getcwd");
8818 		goto done;
8819 	}
8820 
8821 	error = got_repo_pack_fds_open(&pack_fds);
8822 	if (error != NULL)
8823 		goto done;
8824 
8825 	if (repo_path == NULL) {
8826 		error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
8827 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
8828 			goto done;
8829 		if (worktree) {
8830 			repo_path = strdup(
8831 			    got_worktree_get_repo_path(worktree));
8832 			if (repo_path == NULL) {
8833 				error = got_error_from_errno("strdup");
8834 				goto done;
8835 			}
8836 
8837 			/* Release work tree lock. */
8838 			got_worktree_close(worktree);
8839 			worktree = NULL;
8840 		}
8841 	}
8842 
8843 	if (repo_path == NULL) {
8844 		repo_path = strdup(cwd);
8845 		if (repo_path == NULL)
8846 			return got_error_from_errno("strdup");
8847 	}
8848 
8849 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8850 	free(repo_path);
8851 	if (error != NULL)
8852 		goto done;
8853 
8854 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
8855 	if (error)
8856 		goto done;
8857 
8858 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8859 	if (error)
8860 		goto done;
8861 
8862 	if (commit_id_str == NULL)
8863 		commit_id_str = GOT_REF_HEAD;
8864 	error = got_repo_match_object_id(&commit_id, NULL,
8865 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
8866 	if (error)
8867 		goto done;
8868 
8869 	error = got_object_open_as_commit(&commit, repo, commit_id);
8870 	if (error)
8871 		goto done;
8872 
8873 	for (i = 0; i < argc; i++) {
8874 		if (force_path) {
8875 			error = got_object_id_by_path(&id, repo, commit,
8876 			    argv[i]);
8877 			if (error)
8878 				break;
8879 		} else {
8880 			error = got_repo_match_object_id(&id, &label, argv[i],
8881 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
8882 			    repo);
8883 			if (error) {
8884 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
8885 				    error->code != GOT_ERR_NOT_REF)
8886 					break;
8887 				error = got_object_id_by_path(&id, repo,
8888 				    commit, argv[i]);
8889 				if (error)
8890 					break;
8891 			}
8892 		}
8893 
8894 		error = got_object_get_type(&obj_type, repo, id);
8895 		if (error)
8896 			break;
8897 
8898 		switch (obj_type) {
8899 		case GOT_OBJ_TYPE_BLOB:
8900 			error = cat_blob(id, repo, stdout);
8901 			break;
8902 		case GOT_OBJ_TYPE_TREE:
8903 			error = cat_tree(id, repo, stdout);
8904 			break;
8905 		case GOT_OBJ_TYPE_COMMIT:
8906 			error = cat_commit(id, repo, stdout);
8907 			break;
8908 		case GOT_OBJ_TYPE_TAG:
8909 			error = cat_tag(id, repo, stdout);
8910 			break;
8911 		default:
8912 			error = got_error(GOT_ERR_OBJ_TYPE);
8913 			break;
8914 		}
8915 		if (error)
8916 			break;
8917 		free(label);
8918 		label = NULL;
8919 		free(id);
8920 		id = NULL;
8921 	}
8922 done:
8923 	free(label);
8924 	free(id);
8925 	free(commit_id);
8926 	if (commit)
8927 		got_object_commit_close(commit);
8928 	if (worktree)
8929 		got_worktree_close(worktree);
8930 	if (repo) {
8931 		const struct got_error *close_err = got_repo_close(repo);
8932 		if (error == NULL)
8933 			error = close_err;
8934 	}
8935 	if (pack_fds) {
8936 		const struct got_error *pack_err =
8937 		    got_repo_pack_fds_close(pack_fds);
8938 		if (error == NULL)
8939 			error = pack_err;
8940 	}
8941 
8942 	got_ref_list_free(&refs);
8943 	return error;
8944 }
8945 
8946 __dead static void
8947 usage_info(void)
8948 {
8949 	fprintf(stderr, "usage: %s info [path ...]\n",
8950 	    getprogname());
8951 	exit(1);
8952 }
8953 
8954 static const struct got_error *
8955 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
8956     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8957     struct got_object_id *commit_id)
8958 {
8959 	const struct got_error *err = NULL;
8960 	char *id_str = NULL;
8961 	char datebuf[128];
8962 	struct tm mytm, *tm;
8963 	struct got_pathlist_head *paths = arg;
8964 	struct got_pathlist_entry *pe;
8965 
8966 	/*
8967 	 * Clear error indication from any of the path arguments which
8968 	 * would cause this file index entry to be displayed.
8969 	 */
8970 	TAILQ_FOREACH(pe, paths, entry) {
8971 		if (got_path_cmp(path, pe->path, strlen(path),
8972 		    pe->path_len) == 0 ||
8973 		    got_path_is_child(path, pe->path, pe->path_len))
8974 			pe->data = NULL; /* no error */
8975 	}
8976 
8977 	printf(GOT_COMMIT_SEP_STR);
8978 	if (S_ISLNK(mode))
8979 		printf("symlink: %s\n", path);
8980 	else if (S_ISREG(mode)) {
8981 		printf("file: %s\n", path);
8982 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
8983 	} else if (S_ISDIR(mode))
8984 		printf("directory: %s\n", path);
8985 	else
8986 		printf("something: %s\n", path);
8987 
8988 	tm = localtime_r(&mtime, &mytm);
8989 	if (tm == NULL)
8990 		return NULL;
8991 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
8992 		return got_error(GOT_ERR_NO_SPACE);
8993 	printf("timestamp: %s\n", datebuf);
8994 
8995 	if (blob_id) {
8996 		err = got_object_id_str(&id_str, blob_id);
8997 		if (err)
8998 			return err;
8999 		printf("based on blob: %s\n", id_str);
9000 		free(id_str);
9001 	}
9002 
9003 	if (staged_blob_id) {
9004 		err = got_object_id_str(&id_str, staged_blob_id);
9005 		if (err)
9006 			return err;
9007 		printf("based on staged blob: %s\n", id_str);
9008 		free(id_str);
9009 	}
9010 
9011 	if (commit_id) {
9012 		err = got_object_id_str(&id_str, commit_id);
9013 		if (err)
9014 			return err;
9015 		printf("based on commit: %s\n", id_str);
9016 		free(id_str);
9017 	}
9018 
9019 	return NULL;
9020 }
9021 
9022 static const struct got_error *
9023 cmd_info(int argc, char *argv[])
9024 {
9025 	const struct got_error *error = NULL;
9026 	struct got_worktree *worktree = NULL;
9027 	char *cwd = NULL, *id_str = NULL;
9028 	struct got_pathlist_head paths;
9029 	char *uuidstr = NULL;
9030 	int ch, show_files = 0;
9031 
9032 	TAILQ_INIT(&paths);
9033 
9034 #ifndef PROFILE
9035 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
9036 	    NULL) == -1)
9037 		err(1, "pledge");
9038 #endif
9039 
9040 	while ((ch = getopt(argc, argv, "")) != -1) {
9041 		switch (ch) {
9042 		default:
9043 			usage_info();
9044 			/* NOTREACHED */
9045 		}
9046 	}
9047 
9048 	argc -= optind;
9049 	argv += optind;
9050 
9051 	cwd = getcwd(NULL, 0);
9052 	if (cwd == NULL) {
9053 		error = got_error_from_errno("getcwd");
9054 		goto done;
9055 	}
9056 
9057 	error = got_worktree_open(&worktree, cwd, GOT_WORKTREE_CVG_DIR);
9058 	if (error) {
9059 		if (error->code == GOT_ERR_NOT_WORKTREE)
9060 			error = wrap_not_worktree_error(error, "info", cwd);
9061 		goto done;
9062 	}
9063 
9064 #ifndef PROFILE
9065 	/* Remove "wpath cpath proc exec sendfd" promises. */
9066 	if (pledge("stdio rpath flock unveil", NULL) == -1)
9067 		err(1, "pledge");
9068 #endif
9069 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
9070 	if (error)
9071 		goto done;
9072 
9073 	if (argc >= 1) {
9074 		error = get_worktree_paths_from_argv(&paths, argc, argv,
9075 		    worktree);
9076 		if (error)
9077 			goto done;
9078 		show_files = 1;
9079 	}
9080 
9081 	error = got_object_id_str(&id_str,
9082 	    got_worktree_get_base_commit_id(worktree));
9083 	if (error)
9084 		goto done;
9085 
9086 	error = got_worktree_get_uuid(&uuidstr, worktree);
9087 	if (error)
9088 		goto done;
9089 
9090 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
9091 	printf("work tree base commit: %s\n", id_str);
9092 	printf("work tree path prefix: %s\n",
9093 	    got_worktree_get_path_prefix(worktree));
9094 	printf("work tree branch reference: %s\n",
9095 	    got_worktree_get_head_ref_name(worktree));
9096 	printf("work tree UUID: %s\n", uuidstr);
9097 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
9098 
9099 	if (show_files) {
9100 		struct got_pathlist_entry *pe;
9101 		TAILQ_FOREACH(pe, &paths, entry) {
9102 			if (pe->path_len == 0)
9103 				continue;
9104 			/*
9105 			 * Assume this path will fail. This will be corrected
9106 			 * in print_path_info() in case the path does suceeed.
9107 			 */
9108 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
9109 		}
9110 		error = got_worktree_path_info(worktree, &paths,
9111 		    print_path_info, &paths, check_cancelled, NULL);
9112 		if (error)
9113 			goto done;
9114 		TAILQ_FOREACH(pe, &paths, entry) {
9115 			if (pe->data != NULL) {
9116 				const struct got_error *perr;
9117 
9118 				perr = pe->data;
9119 				error = got_error_fmt(perr->code, "%s",
9120 				    pe->path);
9121 				break;
9122 			}
9123 		}
9124 	}
9125 done:
9126 	if (worktree)
9127 		got_worktree_close(worktree);
9128 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9129 	free(cwd);
9130 	free(id_str);
9131 	free(uuidstr);
9132 	return error;
9133 }