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