1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4  * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/queue.h>
20 #include <sys/types.h>
21 #include <sys/stat.h>
22 #include <sys/param.h>
23 #include <sys/wait.h>
24 
25 #include <err.h>
26 #include <errno.h>
27 #include <fcntl.h>
28 #include <limits.h>
29 #include <locale.h>
30 #include <ctype.h>
31 #include <signal.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <unistd.h>
36 #include <libgen.h>
37 #include <time.h>
38 #include <paths.h>
39 #include <regex.h>
40 #include <getopt.h>
41 #include <util.h>
42 
43 #include "got_version.h"
44 #include "got_error.h"
45 #include "got_object.h"
46 #include "got_reference.h"
47 #include "got_repository.h"
48 #include "got_path.h"
49 #include "got_cancel.h"
50 #include "got_worktree.h"
51 #include "got_diff.h"
52 #include "got_commit_graph.h"
53 #include "got_fetch.h"
54 #include "got_blame.h"
55 #include "got_privsep.h"
56 #include "got_opentemp.h"
57 #include "got_gotconfig.h"
58 
59 #ifndef nitems
60 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
61 #endif
62 
63 static volatile sig_atomic_t sigint_received;
64 static volatile sig_atomic_t sigpipe_received;
65 
66 static void
67 catch_sigint(int signo)
68 {
69 	sigint_received = 1;
70 }
71 
72 static void
73 catch_sigpipe(int signo)
74 {
75 	sigpipe_received = 1;
76 }
77 
78 
79 struct got_cmd {
80 	const char	*cmd_name;
81 	const struct got_error *(*cmd_main)(int, char *[]);
82 	void		(*cmd_usage)(void);
83 	const char	*cmd_alias;
84 };
85 
86 __dead static void	usage(int, int);
87 __dead static void	usage_init(void);
88 __dead static void	usage_import(void);
89 __dead static void	usage_clone(void);
90 __dead static void	usage_fetch(void);
91 __dead static void	usage_checkout(void);
92 __dead static void	usage_update(void);
93 __dead static void	usage_log(void);
94 __dead static void	usage_diff(void);
95 __dead static void	usage_blame(void);
96 __dead static void	usage_tree(void);
97 __dead static void	usage_status(void);
98 __dead static void	usage_ref(void);
99 __dead static void	usage_branch(void);
100 __dead static void	usage_tag(void);
101 __dead static void	usage_add(void);
102 __dead static void	usage_remove(void);
103 __dead static void	usage_revert(void);
104 __dead static void	usage_commit(void);
105 __dead static void	usage_cherrypick(void);
106 __dead static void	usage_backout(void);
107 __dead static void	usage_rebase(void);
108 __dead static void	usage_histedit(void);
109 __dead static void	usage_integrate(void);
110 __dead static void	usage_stage(void);
111 __dead static void	usage_unstage(void);
112 __dead static void	usage_cat(void);
113 __dead static void	usage_info(void);
114 
115 static const struct got_error*		cmd_init(int, char *[]);
116 static const struct got_error*		cmd_import(int, char *[]);
117 static const struct got_error*		cmd_clone(int, char *[]);
118 static const struct got_error*		cmd_fetch(int, char *[]);
119 static const struct got_error*		cmd_checkout(int, char *[]);
120 static const struct got_error*		cmd_update(int, char *[]);
121 static const struct got_error*		cmd_log(int, char *[]);
122 static const struct got_error*		cmd_diff(int, char *[]);
123 static const struct got_error*		cmd_blame(int, char *[]);
124 static const struct got_error*		cmd_tree(int, char *[]);
125 static const struct got_error*		cmd_status(int, char *[]);
126 static const struct got_error*		cmd_ref(int, char *[]);
127 static const struct got_error*		cmd_branch(int, char *[]);
128 static const struct got_error*		cmd_tag(int, char *[]);
129 static const struct got_error*		cmd_add(int, char *[]);
130 static const struct got_error*		cmd_remove(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_rebase(int, char *[]);
136 static const struct got_error*		cmd_histedit(int, char *[]);
137 static const struct got_error*		cmd_integrate(int, char *[]);
138 static const struct got_error*		cmd_stage(int, char *[]);
139 static const struct got_error*		cmd_unstage(int, char *[]);
140 static const struct got_error*		cmd_cat(int, char *[]);
141 static const struct got_error*		cmd_info(int, char *[]);
142 
143 static struct got_cmd got_commands[] = {
144 	{ "init",	cmd_init,	usage_init,	"" },
145 	{ "import",	cmd_import,	usage_import,	"im" },
146 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
147 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
148 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
149 	{ "update",	cmd_update,	usage_update,	"up" },
150 	{ "log",	cmd_log,	usage_log,	"" },
151 	{ "diff",	cmd_diff,	usage_diff,	"di" },
152 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
153 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
154 	{ "status",	cmd_status,	usage_status,	"st" },
155 	{ "ref",	cmd_ref,	usage_ref,	"" },
156 	{ "branch",	cmd_branch,	usage_branch,	"br" },
157 	{ "tag",	cmd_tag,	usage_tag,	"" },
158 	{ "add",	cmd_add,	usage_add,	"" },
159 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
160 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
161 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
162 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
163 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
164 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
165 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
166 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
167 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
168 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
169 	{ "cat",	cmd_cat,	usage_cat,	"" },
170 	{ "info",	cmd_info,	usage_info,	"" },
171 };
172 
173 static void
174 list_commands(FILE *fp)
175 {
176 	int i;
177 
178 	fprintf(fp, "commands:");
179 	for (i = 0; i < nitems(got_commands); i++) {
180 		struct got_cmd *cmd = &got_commands[i];
181 		fprintf(fp, " %s", cmd->cmd_name);
182 	}
183 	fputc('\n', fp);
184 }
185 
186 int
187 main(int argc, char *argv[])
188 {
189 	struct got_cmd *cmd;
190 	unsigned int i;
191 	int ch;
192 	int hflag = 0, Vflag = 0;
193 	static struct option longopts[] = {
194 	    { "version", no_argument, NULL, 'V' },
195 	    { NULL, 0, NULL, 0 }
196 	};
197 
198 	setlocale(LC_CTYPE, "");
199 
200 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
201 		switch (ch) {
202 		case 'h':
203 			hflag = 1;
204 			break;
205 		case 'V':
206 			Vflag = 1;
207 			break;
208 		default:
209 			usage(hflag, 1);
210 			/* NOTREACHED */
211 		}
212 	}
213 
214 	argc -= optind;
215 	argv += optind;
216 	optind = 1;
217 	optreset = 1;
218 
219 	if (Vflag) {
220 		got_version_print_str();
221 		return 0;
222 	}
223 
224 	if (argc <= 0)
225 		usage(hflag, hflag ? 0 : 1);
226 
227 	signal(SIGINT, catch_sigint);
228 	signal(SIGPIPE, catch_sigpipe);
229 
230 	for (i = 0; i < nitems(got_commands); i++) {
231 		const struct got_error *error;
232 
233 		cmd = &got_commands[i];
234 
235 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
236 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
237 			continue;
238 
239 		if (hflag)
240 			got_commands[i].cmd_usage();
241 
242 		error = got_commands[i].cmd_main(argc, argv);
243 		if (error && error->code != GOT_ERR_CANCELLED &&
244 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
245 		    !(sigpipe_received &&
246 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
247 		    !(sigint_received &&
248 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
249 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
250 			return 1;
251 		}
252 
253 		return 0;
254 	}
255 
256 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
257 	list_commands(stderr);
258 	return 1;
259 }
260 
261 __dead static void
262 usage(int hflag, int status)
263 {
264 	FILE *fp = (status == 0) ? stdout : stderr;
265 
266 	fprintf(fp, "usage: %s [-h] [-V | --version] command [arg ...]\n",
267 	    getprogname());
268 	if (hflag)
269 		list_commands(fp);
270 	exit(status);
271 }
272 
273 static const struct got_error *
274 get_editor(char **abspath)
275 {
276 	const struct got_error *err = NULL;
277 	const char *editor;
278 
279 	*abspath = NULL;
280 
281 	editor = getenv("VISUAL");
282 	if (editor == NULL)
283 		editor = getenv("EDITOR");
284 
285 	if (editor) {
286 		err = got_path_find_prog(abspath, editor);
287 		if (err)
288 			return err;
289 	}
290 
291 	if (*abspath == NULL) {
292 		*abspath = strdup("/bin/ed");
293 		if (*abspath == NULL)
294 			return got_error_from_errno("strdup");
295 	}
296 
297 	return NULL;
298 }
299 
300 static const struct got_error *
301 apply_unveil(const char *repo_path, int repo_read_only,
302     const char *worktree_path)
303 {
304 	const struct got_error *err;
305 
306 #ifdef PROFILE
307 	if (unveil("gmon.out", "rwc") != 0)
308 		return got_error_from_errno2("unveil", "gmon.out");
309 #endif
310 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
311 		return got_error_from_errno2("unveil", repo_path);
312 
313 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
314 		return got_error_from_errno2("unveil", worktree_path);
315 
316 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
317 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
318 
319 	err = got_privsep_unveil_exec_helpers();
320 	if (err != NULL)
321 		return err;
322 
323 	if (unveil(NULL, NULL) != 0)
324 		return got_error_from_errno("unveil");
325 
326 	return NULL;
327 }
328 
329 __dead static void
330 usage_init(void)
331 {
332 	fprintf(stderr, "usage: %s init repository-path\n", getprogname());
333 	exit(1);
334 }
335 
336 static const struct got_error *
337 cmd_init(int argc, char *argv[])
338 {
339 	const struct got_error *error = NULL;
340 	char *repo_path = NULL;
341 	int ch;
342 
343 	while ((ch = getopt(argc, argv, "")) != -1) {
344 		switch (ch) {
345 		default:
346 			usage_init();
347 			/* NOTREACHED */
348 		}
349 	}
350 
351 	argc -= optind;
352 	argv += optind;
353 
354 #ifndef PROFILE
355 	if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
356 		err(1, "pledge");
357 #endif
358 	if (argc != 1)
359 		usage_init();
360 
361 	repo_path = strdup(argv[0]);
362 	if (repo_path == NULL)
363 		return got_error_from_errno("strdup");
364 
365 	got_path_strip_trailing_slashes(repo_path);
366 
367 	error = got_path_mkdir(repo_path);
368 	if (error &&
369 	    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
370 		goto done;
371 
372 	error = apply_unveil(repo_path, 0, NULL);
373 	if (error)
374 		goto done;
375 
376 	error = got_repo_init(repo_path);
377 done:
378 	free(repo_path);
379 	return error;
380 }
381 
382 __dead static void
383 usage_import(void)
384 {
385 	fprintf(stderr, "usage: %s import [-b branch] [-m message] "
386 	    "[-r repository-path] [-I pattern] path\n", getprogname());
387 	exit(1);
388 }
389 
390 int
391 spawn_editor(const char *editor, const char *file)
392 {
393 	pid_t pid;
394 	sig_t sighup, sigint, sigquit;
395 	int st = -1;
396 
397 	sighup = signal(SIGHUP, SIG_IGN);
398 	sigint = signal(SIGINT, SIG_IGN);
399 	sigquit = signal(SIGQUIT, SIG_IGN);
400 
401 	switch (pid = fork()) {
402 	case -1:
403 		goto doneediting;
404 	case 0:
405 		execl(editor, editor, file, (char *)NULL);
406 		_exit(127);
407 	}
408 
409 	while (waitpid(pid, &st, 0) == -1)
410 		if (errno != EINTR)
411 			break;
412 
413 doneediting:
414 	(void)signal(SIGHUP, sighup);
415 	(void)signal(SIGINT, sigint);
416 	(void)signal(SIGQUIT, sigquit);
417 
418 	if (!WIFEXITED(st)) {
419 		errno = EINTR;
420 		return -1;
421 	}
422 
423 	return WEXITSTATUS(st);
424 }
425 
426 static const struct got_error *
427 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
428     const char *initial_content, size_t initial_content_len)
429 {
430 	const struct got_error *err = NULL;
431 	char *line = NULL;
432 	size_t linesize = 0;
433 	ssize_t linelen;
434 	struct stat st, st2;
435 	FILE *fp = NULL;
436 	size_t len, logmsg_len;
437 	char *initial_content_stripped = NULL, *buf = NULL, *s;
438 
439 	*logmsg = NULL;
440 
441 	if (stat(logmsg_path, &st) == -1)
442 		return got_error_from_errno2("stat", logmsg_path);
443 
444 	if (spawn_editor(editor, logmsg_path) == -1)
445 		return got_error_from_errno("failed spawning editor");
446 
447 	if (stat(logmsg_path, &st2) == -1)
448 		return got_error_from_errno("stat");
449 
450 	if (st.st_mtime == st2.st_mtime && st.st_size == st2.st_size)
451 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
452 		    "no changes made to commit message, aborting");
453 
454 	/*
455 	 * Set up a stripped version of the initial content without comments
456 	 * and blank lines. We need this in order to check if the message
457 	 * has in fact been edited.
458 	 */
459 	initial_content_stripped = malloc(initial_content_len + 1);
460 	if (initial_content_stripped == NULL)
461 		return got_error_from_errno("malloc");
462 	initial_content_stripped[0] = '\0';
463 
464 	buf = strdup(initial_content);
465 	if (buf == NULL) {
466 		err = got_error_from_errno("strdup");
467 		goto done;
468 	}
469 	s = buf;
470 	len = 0;
471 	while ((line = strsep(&s, "\n")) != NULL) {
472 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
473 			continue; /* remove comments and leading empty lines */
474 		len = strlcat(initial_content_stripped, line,
475 		    initial_content_len + 1);
476 		if (len >= initial_content_len + 1) {
477 			err = got_error(GOT_ERR_NO_SPACE);
478 			goto done;
479 		}
480 	}
481 	while (len > 0 && initial_content_stripped[len - 1] == '\n') {
482 		initial_content_stripped[len - 1] = '\0';
483 		len--;
484 	}
485 
486 	logmsg_len = st2.st_size;
487 	*logmsg = malloc(logmsg_len + 1);
488 	if (*logmsg == NULL)
489 		return got_error_from_errno("malloc");
490 	(*logmsg)[0] = '\0';
491 
492 	fp = fopen(logmsg_path, "r");
493 	if (fp == NULL) {
494 		err = got_error_from_errno("fopen");
495 		goto done;
496 	}
497 
498 	len = 0;
499 	while ((linelen = getline(&line, &linesize, fp)) != -1) {
500 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
501 			continue; /* remove comments and leading empty lines */
502 		len = strlcat(*logmsg, line, logmsg_len + 1);
503 		if (len >= logmsg_len + 1) {
504 			err = got_error(GOT_ERR_NO_SPACE);
505 			goto done;
506 		}
507 	}
508 	free(line);
509 	if (ferror(fp)) {
510 		err = got_ferror(fp, GOT_ERR_IO);
511 		goto done;
512 	}
513 	while (len > 0 && (*logmsg)[len - 1] == '\n') {
514 		(*logmsg)[len - 1] = '\0';
515 		len--;
516 	}
517 
518 	if (len == 0) {
519 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
520 		    "commit message cannot be empty, aborting");
521 		goto done;
522 	}
523 	if (strcmp(*logmsg, initial_content_stripped) == 0)
524 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
525 		    "no changes made to commit message, aborting");
526 done:
527 	free(initial_content_stripped);
528 	free(buf);
529 	if (fp && fclose(fp) == EOF && err == NULL)
530 		err = got_error_from_errno("fclose");
531 	if (err) {
532 		free(*logmsg);
533 		*logmsg = NULL;
534 	}
535 	return err;
536 }
537 
538 static const struct got_error *
539 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
540     const char *path_dir, const char *branch_name)
541 {
542 	char *initial_content = NULL;
543 	const struct got_error *err = NULL;
544 	int initial_content_len;
545 	int fd = -1;
546 
547 	initial_content_len = asprintf(&initial_content,
548 	    "\n# %s to be imported to branch %s\n", path_dir,
549 	    branch_name);
550 	if (initial_content_len == -1)
551 		return got_error_from_errno("asprintf");
552 
553 	err = got_opentemp_named_fd(logmsg_path, &fd,
554 	    GOT_TMPDIR_STR "/got-importmsg");
555 	if (err)
556 		goto done;
557 
558 	if (write(fd, initial_content, initial_content_len) == -1) {
559 		err = got_error_from_errno2("write", *logmsg_path);
560 		goto done;
561 	}
562 
563 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
564 	    initial_content_len);
565 done:
566 	if (fd != -1 && close(fd) == -1 && err == NULL)
567 		err = got_error_from_errno2("close", *logmsg_path);
568 	free(initial_content);
569 	if (err) {
570 		free(*logmsg_path);
571 		*logmsg_path = NULL;
572 	}
573 	return err;
574 }
575 
576 static const struct got_error *
577 import_progress(void *arg, const char *path)
578 {
579 	printf("A  %s\n", path);
580 	return NULL;
581 }
582 
583 static const struct got_error *
584 get_author(char **author, struct got_repository *repo,
585     struct got_worktree *worktree)
586 {
587 	const struct got_error *err = NULL;
588 	const char *got_author = NULL, *name, *email;
589 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
590 
591 	*author = NULL;
592 
593 	if (worktree)
594 		worktree_conf = got_worktree_get_gotconfig(worktree);
595 	repo_conf = got_repo_get_gotconfig(repo);
596 
597 	/*
598 	 * Priority of potential author information sources, from most
599 	 * significant to least significant:
600 	 * 1) work tree's .got/got.conf file
601 	 * 2) repository's got.conf file
602 	 * 3) repository's git config file
603 	 * 4) environment variables
604 	 * 5) global git config files (in user's home directory or /etc)
605 	 */
606 
607 	if (worktree_conf)
608 		got_author = got_gotconfig_get_author(worktree_conf);
609 	if (got_author == NULL)
610 		got_author = got_gotconfig_get_author(repo_conf);
611 	if (got_author == NULL) {
612 		name = got_repo_get_gitconfig_author_name(repo);
613 		email = got_repo_get_gitconfig_author_email(repo);
614 		if (name && email) {
615 			if (asprintf(author, "%s <%s>", name, email) == -1)
616 				return got_error_from_errno("asprintf");
617 			return NULL;
618 		}
619 
620 		got_author = getenv("GOT_AUTHOR");
621 		if (got_author == NULL) {
622 			name = got_repo_get_global_gitconfig_author_name(repo);
623 			email = got_repo_get_global_gitconfig_author_email(
624 			    repo);
625 			if (name && email) {
626 				if (asprintf(author, "%s <%s>", name, email)
627 				    == -1)
628 					return got_error_from_errno("asprintf");
629 				return NULL;
630 			}
631 			/* TODO: Look up user in password database? */
632 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
633 		}
634 	}
635 
636 	*author = strdup(got_author);
637 	if (*author == NULL)
638 		return got_error_from_errno("strdup");
639 
640 	/*
641 	 * Really dumb email address check; we're only doing this to
642 	 * avoid git's object parser breaking on commits we create.
643 	 */
644 	while (*got_author && *got_author != '<')
645 		got_author++;
646 	if (*got_author != '<') {
647 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
648 		goto done;
649 	}
650 	while (*got_author && *got_author != '@')
651 		got_author++;
652 	if (*got_author != '@') {
653 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
654 		goto done;
655 	}
656 	while (*got_author && *got_author != '>')
657 		got_author++;
658 	if (*got_author != '>')
659 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
660 done:
661 	if (err) {
662 		free(*author);
663 		*author = NULL;
664 	}
665 	return err;
666 }
667 
668 static const struct got_error *
669 get_gitconfig_path(char **gitconfig_path)
670 {
671 	const char *homedir = getenv("HOME");
672 
673 	*gitconfig_path = NULL;
674 	if (homedir) {
675 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
676 			return got_error_from_errno("asprintf");
677 
678 	}
679 	return NULL;
680 }
681 
682 static const struct got_error *
683 cmd_import(int argc, char *argv[])
684 {
685 	const struct got_error *error = NULL;
686 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
687 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
688 	const char *branch_name = "main";
689 	char *refname = NULL, *id_str = NULL, *logmsg_path = NULL;
690 	struct got_repository *repo = NULL;
691 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
692 	struct got_object_id *new_commit_id = NULL;
693 	int ch;
694 	struct got_pathlist_head ignores;
695 	struct got_pathlist_entry *pe;
696 	int preserve_logmsg = 0;
697 
698 	TAILQ_INIT(&ignores);
699 
700 	while ((ch = getopt(argc, argv, "b:m:r:I:")) != -1) {
701 		switch (ch) {
702 		case 'b':
703 			branch_name = optarg;
704 			break;
705 		case 'm':
706 			logmsg = strdup(optarg);
707 			if (logmsg == NULL) {
708 				error = got_error_from_errno("strdup");
709 				goto done;
710 			}
711 			break;
712 		case 'r':
713 			repo_path = realpath(optarg, NULL);
714 			if (repo_path == NULL) {
715 				error = got_error_from_errno2("realpath",
716 				    optarg);
717 				goto done;
718 			}
719 			break;
720 		case 'I':
721 			if (optarg[0] == '\0')
722 				break;
723 			error = got_pathlist_insert(&pe, &ignores, optarg,
724 			    NULL);
725 			if (error)
726 				goto done;
727 			break;
728 		default:
729 			usage_import();
730 			/* NOTREACHED */
731 		}
732 	}
733 
734 	argc -= optind;
735 	argv += optind;
736 
737 #ifndef PROFILE
738 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
739 	    "unveil",
740 	    NULL) == -1)
741 		err(1, "pledge");
742 #endif
743 	if (argc != 1)
744 		usage_import();
745 
746 	if (repo_path == NULL) {
747 		repo_path = getcwd(NULL, 0);
748 		if (repo_path == NULL)
749 			return got_error_from_errno("getcwd");
750 	}
751 	got_path_strip_trailing_slashes(repo_path);
752 	error = get_gitconfig_path(&gitconfig_path);
753 	if (error)
754 		goto done;
755 	error = got_repo_open(&repo, repo_path, gitconfig_path);
756 	if (error)
757 		goto done;
758 
759 	error = get_author(&author, repo, NULL);
760 	if (error)
761 		return error;
762 
763 	/*
764 	 * Don't let the user create a branch name with a leading '-'.
765 	 * While technically a valid reference name, this case is usually
766 	 * an unintended typo.
767 	 */
768 	if (branch_name[0] == '-')
769 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
770 
771 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
772 		error = got_error_from_errno("asprintf");
773 		goto done;
774 	}
775 
776 	error = got_ref_open(&branch_ref, repo, refname, 0);
777 	if (error) {
778 		if (error->code != GOT_ERR_NOT_REF)
779 			goto done;
780 	} else {
781 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
782 		    "import target branch already exists");
783 		goto done;
784 	}
785 
786 	path_dir = realpath(argv[0], NULL);
787 	if (path_dir == NULL) {
788 		error = got_error_from_errno2("realpath", argv[0]);
789 		goto done;
790 	}
791 	got_path_strip_trailing_slashes(path_dir);
792 
793 	/*
794 	 * unveil(2) traverses exec(2); if an editor is used we have
795 	 * to apply unveil after the log message has been written.
796 	 */
797 	if (logmsg == NULL || strlen(logmsg) == 0) {
798 		error = get_editor(&editor);
799 		if (error)
800 			goto done;
801 		free(logmsg);
802 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
803 		    path_dir, refname);
804 		if (error) {
805 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
806 			    logmsg_path != NULL)
807 				preserve_logmsg = 1;
808 			goto done;
809 		}
810 	}
811 
812 	if (unveil(path_dir, "r") != 0) {
813 		error = got_error_from_errno2("unveil", path_dir);
814 		if (logmsg_path)
815 			preserve_logmsg = 1;
816 		goto done;
817 	}
818 
819 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
820 	if (error) {
821 		if (logmsg_path)
822 			preserve_logmsg = 1;
823 		goto done;
824 	}
825 
826 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
827 	    author, &ignores, repo, import_progress, NULL);
828 	if (error) {
829 		if (logmsg_path)
830 			preserve_logmsg = 1;
831 		goto done;
832 	}
833 
834 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
835 	if (error) {
836 		if (logmsg_path)
837 			preserve_logmsg = 1;
838 		goto done;
839 	}
840 
841 	error = got_ref_write(branch_ref, repo);
842 	if (error) {
843 		if (logmsg_path)
844 			preserve_logmsg = 1;
845 		goto done;
846 	}
847 
848 	error = got_object_id_str(&id_str, new_commit_id);
849 	if (error) {
850 		if (logmsg_path)
851 			preserve_logmsg = 1;
852 		goto done;
853 	}
854 
855 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
856 	if (error) {
857 		if (error->code != GOT_ERR_NOT_REF) {
858 			if (logmsg_path)
859 				preserve_logmsg = 1;
860 			goto done;
861 		}
862 
863 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
864 		    branch_ref);
865 		if (error) {
866 			if (logmsg_path)
867 				preserve_logmsg = 1;
868 			goto done;
869 		}
870 
871 		error = got_ref_write(head_ref, repo);
872 		if (error) {
873 			if (logmsg_path)
874 				preserve_logmsg = 1;
875 			goto done;
876 		}
877 	}
878 
879 	printf("Created branch %s with commit %s\n",
880 	    got_ref_get_name(branch_ref), id_str);
881 done:
882 	if (preserve_logmsg) {
883 		fprintf(stderr, "%s: log message preserved in %s\n",
884 		    getprogname(), logmsg_path);
885 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
886 		error = got_error_from_errno2("unlink", logmsg_path);
887 	free(logmsg);
888 	free(logmsg_path);
889 	free(repo_path);
890 	free(editor);
891 	free(refname);
892 	free(new_commit_id);
893 	free(id_str);
894 	free(author);
895 	free(gitconfig_path);
896 	if (branch_ref)
897 		got_ref_close(branch_ref);
898 	if (head_ref)
899 		got_ref_close(head_ref);
900 	return error;
901 }
902 
903 __dead static void
904 usage_clone(void)
905 {
906 	fprintf(stderr, "usage: %s clone [-a] [-b branch] [-l] [-m] [-q] [-v] "
907 	    "[-R reference] repository-url [directory]\n", getprogname());
908 	exit(1);
909 }
910 
911 struct got_fetch_progress_arg {
912 	char last_scaled_size[FMT_SCALED_STRSIZE];
913 	int last_p_indexed;
914 	int last_p_resolved;
915 	int verbosity;
916 
917 	struct got_repository *repo;
918 
919 	int create_configs;
920 	int configs_created;
921 	struct {
922 		struct got_pathlist_head *symrefs;
923 		struct got_pathlist_head *wanted_branches;
924 		const char *proto;
925 		const char *host;
926 		const char *port;
927 		const char *remote_repo_path;
928 		const char *git_url;
929 		int fetch_all_branches;
930 		int mirror_references;
931 	} config_info;
932 };
933 
934 /* XXX forward declaration */
935 static const struct got_error *
936 create_config_files(const char *proto, const char *host, const char *port,
937     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
938     int mirror_references, struct got_pathlist_head *symrefs,
939     struct got_pathlist_head *wanted_branches, struct got_repository *repo);
940 
941 static const struct got_error *
942 fetch_progress(void *arg, const char *message, off_t packfile_size,
943     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
944 {
945 	const struct got_error *err = NULL;
946 	struct got_fetch_progress_arg *a = arg;
947 	char scaled_size[FMT_SCALED_STRSIZE];
948 	int p_indexed, p_resolved;
949 	int print_size = 0, print_indexed = 0, print_resolved = 0;
950 
951 	/*
952 	 * In order to allow a failed clone to be resumed with 'got fetch'
953 	 * we try to create configuration files as soon as possible.
954 	 * Once the server has sent information about its default branch
955 	 * we have all required information.
956 	 */
957 	if (a->create_configs && !a->configs_created &&
958 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
959 		err = create_config_files(a->config_info.proto,
960 		    a->config_info.host, a->config_info.port,
961 		    a->config_info.remote_repo_path,
962 		    a->config_info.git_url,
963 		    a->config_info.fetch_all_branches,
964 		    a->config_info.mirror_references,
965 		    a->config_info.symrefs,
966 		    a->config_info.wanted_branches, a->repo);
967 		if (err)
968 			return err;
969 		a->configs_created = 1;
970 	}
971 
972 	if (a->verbosity < 0)
973 		return NULL;
974 
975 	if (message && message[0] != '\0') {
976 		printf("\rserver: %s", message);
977 		fflush(stdout);
978 		return NULL;
979 	}
980 
981 	if (packfile_size > 0 || nobj_indexed > 0) {
982 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
983 		    (a->last_scaled_size[0] == '\0' ||
984 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
985 			print_size = 1;
986 			if (strlcpy(a->last_scaled_size, scaled_size,
987 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
988 				return got_error(GOT_ERR_NO_SPACE);
989 		}
990 		if (nobj_indexed > 0) {
991 			p_indexed = (nobj_indexed * 100) / nobj_total;
992 			if (p_indexed != a->last_p_indexed) {
993 				a->last_p_indexed = p_indexed;
994 				print_indexed = 1;
995 				print_size = 1;
996 			}
997 		}
998 		if (nobj_resolved > 0) {
999 			p_resolved = (nobj_resolved * 100) /
1000 			    (nobj_total - nobj_loose);
1001 			if (p_resolved != a->last_p_resolved) {
1002 				a->last_p_resolved = p_resolved;
1003 				print_resolved = 1;
1004 				print_indexed = 1;
1005 				print_size = 1;
1006 			}
1007 		}
1008 
1009 	}
1010 	if (print_size || print_indexed || print_resolved)
1011 		printf("\r");
1012 	if (print_size)
1013 		printf("%*s fetched", FMT_SCALED_STRSIZE, scaled_size);
1014 	if (print_indexed)
1015 		printf("; indexing %d%%", p_indexed);
1016 	if (print_resolved)
1017 		printf("; resolving deltas %d%%", p_resolved);
1018 	if (print_size || print_indexed || print_resolved)
1019 		fflush(stdout);
1020 
1021 	return NULL;
1022 }
1023 
1024 static const struct got_error *
1025 create_symref(const char *refname, struct got_reference *target_ref,
1026     int verbosity, struct got_repository *repo)
1027 {
1028 	const struct got_error *err;
1029 	struct got_reference *head_symref;
1030 
1031 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1032 	if (err)
1033 		return err;
1034 
1035 	err = got_ref_write(head_symref, repo);
1036 	if (err == NULL && verbosity > 0) {
1037 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1038 		    got_ref_get_name(target_ref));
1039 	}
1040 	got_ref_close(head_symref);
1041 	return err;
1042 }
1043 
1044 static const struct got_error *
1045 list_remote_refs(struct got_pathlist_head *symrefs,
1046     struct got_pathlist_head *refs)
1047 {
1048 	const struct got_error *err;
1049 	struct got_pathlist_entry *pe;
1050 
1051 	TAILQ_FOREACH(pe, symrefs, entry) {
1052 		const char *refname = pe->path;
1053 		const char *targetref = pe->data;
1054 
1055 		printf("%s: %s\n", refname, targetref);
1056 	}
1057 
1058 	TAILQ_FOREACH(pe, refs, entry) {
1059 		const char *refname = pe->path;
1060 		struct got_object_id *id = pe->data;
1061 		char *id_str;
1062 
1063 		err = got_object_id_str(&id_str, id);
1064 		if (err)
1065 			return err;
1066 		printf("%s: %s\n", refname, id_str);
1067 		free(id_str);
1068 	}
1069 
1070 	return NULL;
1071 }
1072 
1073 static const struct got_error *
1074 create_ref(const char *refname, struct got_object_id *id,
1075     int verbosity, struct got_repository *repo)
1076 {
1077 	const struct got_error *err = NULL;
1078 	struct got_reference *ref;
1079 	char *id_str;
1080 
1081 	err = got_object_id_str(&id_str, id);
1082 	if (err)
1083 		return err;
1084 
1085 	err = got_ref_alloc(&ref, refname, id);
1086 	if (err)
1087 		goto done;
1088 
1089 	err = got_ref_write(ref, repo);
1090 	got_ref_close(ref);
1091 
1092 	if (err == NULL && verbosity >= 0)
1093 		printf("Created reference %s: %s\n", refname, id_str);
1094 done:
1095 	free(id_str);
1096 	return err;
1097 }
1098 
1099 static int
1100 match_wanted_ref(const char *refname, const char *wanted_ref)
1101 {
1102 	if (strncmp(refname, "refs/", 5) != 0)
1103 		return 0;
1104 	refname += 5;
1105 
1106 	/*
1107 	 * Prevent fetching of references that won't make any
1108 	 * sense outside of the remote repository's context.
1109 	 */
1110 	if (strncmp(refname, "got/", 4) == 0)
1111 		return 0;
1112 	if (strncmp(refname, "remotes/", 8) == 0)
1113 		return 0;
1114 
1115 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1116 		wanted_ref += 5;
1117 
1118 	/* Allow prefix match. */
1119 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1120 		return 1;
1121 
1122 	/* Allow exact match. */
1123 	return (strcmp(refname, wanted_ref) == 0);
1124 }
1125 
1126 static int
1127 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1128 {
1129 	struct got_pathlist_entry *pe;
1130 
1131 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1132 		if (match_wanted_ref(refname, pe->path))
1133 			return 1;
1134 	}
1135 
1136 	return 0;
1137 }
1138 
1139 static const struct got_error *
1140 create_wanted_ref(const char *refname, struct got_object_id *id,
1141     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1142 {
1143 	const struct got_error *err;
1144 	char *remote_refname;
1145 
1146 	if (strncmp("refs/", refname, 5) == 0)
1147 		refname += 5;
1148 
1149 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1150 	    remote_repo_name, refname) == -1)
1151 		return got_error_from_errno("asprintf");
1152 
1153 	err = create_ref(remote_refname, id, verbosity, repo);
1154 	free(remote_refname);
1155 	return err;
1156 }
1157 
1158 static const struct got_error *
1159 create_gotconfig(const char *proto, const char *host, const char *port,
1160     const char *remote_repo_path, int fetch_all_branches, int mirror_references,
1161     struct got_repository *repo)
1162 {
1163 	const struct got_error *err = NULL;
1164 	char *gotconfig_path = NULL;
1165 	char *gotconfig = NULL;
1166 	FILE *gotconfig_file = NULL;
1167 	ssize_t n;
1168 
1169 	/* Create got.conf(5). */
1170 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1171 	if (gotconfig_path == NULL) {
1172 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1173 		goto done;
1174 	}
1175 	gotconfig_file = fopen(gotconfig_path, "a");
1176 	if (gotconfig_file == NULL) {
1177 		err = got_error_from_errno2("fopen", gotconfig_path);
1178 		goto done;
1179 	}
1180 	if (asprintf(&gotconfig,
1181 	    "remote \"%s\" {\n"
1182 	    "\tserver %s\n"
1183 	    "\tprotocol %s\n"
1184 	    "%s%s%s"
1185 	    "\trepository \"%s\"\n"
1186 	    "%s"
1187 	    "}\n",
1188 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1189 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1190 	    remote_repo_path,
1191 	    mirror_references ? "\tmirror-references yes\n" : "") == -1) {
1192 		err = got_error_from_errno("asprintf");
1193 		goto done;
1194 	}
1195 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1196 	if (n != strlen(gotconfig)) {
1197 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1198 		goto done;
1199 	}
1200 
1201 done:
1202 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1203 		err = got_error_from_errno2("fclose", gotconfig_path);
1204 	free(gotconfig_path);
1205 	return err;
1206 }
1207 
1208 static const struct got_error *
1209 create_gitconfig(const char *git_url, const char *default_branch,
1210     int fetch_all_branches, int mirror_references, struct got_repository *repo)
1211 {
1212 	const struct got_error *err = NULL;
1213 	char *gitconfig_path = NULL;
1214 	char *gitconfig = NULL;
1215 	FILE *gitconfig_file = NULL;
1216 	ssize_t n;
1217 
1218 	/* Create a config file Git can understand. */
1219 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1220 	if (gitconfig_path == NULL) {
1221 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1222 		goto done;
1223 	}
1224 	gitconfig_file = fopen(gitconfig_path, "a");
1225 	if (gitconfig_file == NULL) {
1226 		err = got_error_from_errno2("fopen", gitconfig_path);
1227 		goto done;
1228 	}
1229 	if (mirror_references) {
1230 		if (asprintf(&gitconfig,
1231 		    "[remote \"%s\"]\n"
1232 		    "\turl = %s\n"
1233 		    "\tfetch = +refs/*:refs/*\n"
1234 		    "\tmirror = true\n",
1235 		    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url) == -1) {
1236 			err = got_error_from_errno("asprintf");
1237 			goto done;
1238 		}
1239 	} else if (fetch_all_branches) {
1240 		if (asprintf(&gitconfig,
1241 		    "[remote \"%s\"]\n"
1242 		    "\turl = %s\n"
1243 		    "\tfetch = +refs/heads/*:refs/remotes/%s/*\n",
1244 		    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url,
1245 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1246 			err = got_error_from_errno("asprintf");
1247 			goto done;
1248 		}
1249 	} else {
1250 		const char *branchname;
1251 
1252 		/*
1253 		 * If the server specified a default branch, use just that one.
1254 		 * Otherwise fall back to fetching all branches on next fetch.
1255 		 */
1256 		if (default_branch) {
1257 			branchname = default_branch;
1258 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1259 				branchname += 11;
1260 		} else
1261 			branchname = "*"; /* fall back to all branches */
1262 		if (asprintf(&gitconfig,
1263 		    "[remote \"%s\"]\n"
1264 		    "\turl = %s\n"
1265 		    "\tfetch = +refs/heads/%s:refs/remotes/%s/%s\n",
1266 		    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url,
1267 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1268 		    branchname) == -1) {
1269 			err = got_error_from_errno("asprintf");
1270 			goto done;
1271 		}
1272 	}
1273 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1274 	if (n != strlen(gitconfig)) {
1275 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1276 		goto done;
1277 	}
1278 done:
1279 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1280 		err = got_error_from_errno2("fclose", gitconfig_path);
1281 	free(gitconfig_path);
1282 	return err;
1283 }
1284 
1285 static const struct got_error *
1286 create_config_files(const char *proto, const char *host, const char *port,
1287     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1288     int mirror_references, struct got_pathlist_head *symrefs,
1289     struct got_pathlist_head *wanted_branches, struct got_repository *repo)
1290 {
1291 	const struct got_error *err = NULL;
1292 	const char *default_branch = NULL;
1293 	struct got_pathlist_entry *pe;
1294 
1295 	/*
1296 	 * If we asked for a set of wanted branches then use the first
1297 	 * one of those.
1298 	 */
1299 	if (!TAILQ_EMPTY(wanted_branches)) {
1300 		pe = TAILQ_FIRST(wanted_branches);
1301 		default_branch = pe->path;
1302 	} else {
1303 		/* First HEAD ref listed by server is the default branch. */
1304 		TAILQ_FOREACH(pe, symrefs, entry) {
1305 			const char *refname = pe->path;
1306 			const char *target = pe->data;
1307 
1308 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1309 				continue;
1310 
1311 			default_branch = target;
1312 			break;
1313 		}
1314 	}
1315 
1316 	/* Create got.conf(5). */
1317 	err = create_gotconfig(proto, host, port, remote_repo_path,
1318 	    fetch_all_branches, mirror_references, repo);
1319 	if (err)
1320 		return err;
1321 
1322 	/* Create a config file Git can understand. */
1323 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1324 	    mirror_references, repo);
1325 }
1326 
1327 static const struct got_error *
1328 cmd_clone(int argc, char *argv[])
1329 {
1330 	const struct got_error *error = NULL;
1331 	const char *uri, *dirname;
1332 	char *proto, *host, *port, *repo_name, *server_path;
1333 	char *default_destdir = NULL, *id_str = NULL;
1334 	const char *repo_path;
1335 	struct got_repository *repo = NULL;
1336 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1337 	struct got_pathlist_entry *pe;
1338 	struct got_object_id *pack_hash = NULL;
1339 	int ch, fetchfd = -1, fetchstatus;
1340 	pid_t fetchpid = -1;
1341 	struct got_fetch_progress_arg fpa;
1342 	char *git_url = NULL;
1343 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1344 	int list_refs_only = 0;
1345 
1346 	TAILQ_INIT(&refs);
1347 	TAILQ_INIT(&symrefs);
1348 	TAILQ_INIT(&wanted_branches);
1349 	TAILQ_INIT(&wanted_refs);
1350 
1351 	while ((ch = getopt(argc, argv, "ab:lmvqR:")) != -1) {
1352 		switch (ch) {
1353 		case 'a':
1354 			fetch_all_branches = 1;
1355 			break;
1356 		case 'b':
1357 			error = got_pathlist_append(&wanted_branches,
1358 			    optarg, NULL);
1359 			if (error)
1360 				return error;
1361 			break;
1362 		case 'l':
1363 			list_refs_only = 1;
1364 			break;
1365 		case 'm':
1366 			mirror_references = 1;
1367 			break;
1368 		case 'v':
1369 			if (verbosity < 0)
1370 				verbosity = 0;
1371 			else if (verbosity < 3)
1372 				verbosity++;
1373 			break;
1374 		case 'q':
1375 			verbosity = -1;
1376 			break;
1377 		case 'R':
1378 			error = got_pathlist_append(&wanted_refs,
1379 			    optarg, NULL);
1380 			if (error)
1381 				return error;
1382 			break;
1383 		default:
1384 			usage_clone();
1385 			break;
1386 		}
1387 	}
1388 	argc -= optind;
1389 	argv += optind;
1390 
1391 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1392 		errx(1, "-a and -b options are mutually exclusive");
1393 	if (list_refs_only) {
1394 		if (!TAILQ_EMPTY(&wanted_branches))
1395 			errx(1, "-l and -b options are mutually exclusive");
1396 		if (fetch_all_branches)
1397 			errx(1, "-l and -a options are mutually exclusive");
1398 		if (mirror_references)
1399 			errx(1, "-l and -m options are mutually exclusive");
1400 		if (verbosity == -1)
1401 			errx(1, "-l and -q options are mutually exclusive");
1402 		if (!TAILQ_EMPTY(&wanted_refs))
1403 			errx(1, "-l and -R options are mutually exclusive");
1404 	}
1405 
1406 	uri = argv[0];
1407 
1408 	if (argc == 1)
1409 		dirname = NULL;
1410 	else if (argc == 2)
1411 		dirname = argv[1];
1412 	else
1413 		usage_clone();
1414 
1415 	error = got_fetch_parse_uri(&proto, &host, &port, &server_path,
1416 	    &repo_name, uri);
1417 	if (error)
1418 		goto done;
1419 
1420 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1421 	    host, port ? ":" : "", port ? port : "",
1422 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1423 		error = got_error_from_errno("asprintf");
1424 		goto done;
1425 	}
1426 
1427 	if (strcmp(proto, "git") == 0) {
1428 #ifndef PROFILE
1429 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1430 		    "sendfd dns inet unveil", NULL) == -1)
1431 			err(1, "pledge");
1432 #endif
1433 	} else if (strcmp(proto, "git+ssh") == 0 ||
1434 	    strcmp(proto, "ssh") == 0) {
1435 #ifndef PROFILE
1436 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1437 		    "sendfd unveil", NULL) == -1)
1438 			err(1, "pledge");
1439 #endif
1440 	} else if (strcmp(proto, "http") == 0 ||
1441 	    strcmp(proto, "git+http") == 0) {
1442 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1443 		goto done;
1444 	} else {
1445 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1446 		goto done;
1447 	}
1448 	if (dirname == NULL) {
1449 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1450 			error = got_error_from_errno("asprintf");
1451 			goto done;
1452 		}
1453 		repo_path = default_destdir;
1454 	} else
1455 		repo_path = dirname;
1456 
1457 	if (!list_refs_only) {
1458 		error = got_path_mkdir(repo_path);
1459 		if (error &&
1460 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1461 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1462 			goto done;
1463 		if (!got_path_dir_is_empty(repo_path)) {
1464 			error = got_error_path(repo_path,
1465 			    GOT_ERR_DIR_NOT_EMPTY);
1466 			goto done;
1467 		}
1468 	}
1469 
1470 	if (strcmp(proto, "git+ssh") == 0 || strcmp(proto, "ssh") == 0) {
1471 		if (unveil(GOT_FETCH_PATH_SSH, "x") != 0) {
1472 			error = got_error_from_errno2("unveil",
1473 			    GOT_FETCH_PATH_SSH);
1474 			goto done;
1475 		}
1476 	}
1477 	error = apply_unveil(repo_path, 0, NULL);
1478 	if (error)
1479 		goto done;
1480 
1481 	if (verbosity >= 0)
1482 		printf("Connecting to %s%s%s\n", host,
1483 		    port ? ":" : "", port ? port : "");
1484 
1485 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1486 	    server_path, verbosity);
1487 	if (error)
1488 		goto done;
1489 
1490 	if (!list_refs_only) {
1491 		error = got_repo_init(repo_path);
1492 		if (error)
1493 			goto done;
1494 		error = got_repo_open(&repo, repo_path, NULL);
1495 		if (error)
1496 			goto done;
1497 	}
1498 
1499 	fpa.last_scaled_size[0] = '\0';
1500 	fpa.last_p_indexed = -1;
1501 	fpa.last_p_resolved = -1;
1502 	fpa.verbosity = verbosity;
1503 	fpa.create_configs = 1;
1504 	fpa.configs_created = 0;
1505 	fpa.repo = repo;
1506 	fpa.config_info.symrefs = &symrefs;
1507 	fpa.config_info.wanted_branches = &wanted_branches;
1508 	fpa.config_info.proto = proto;
1509 	fpa.config_info.host = host;
1510 	fpa.config_info.port = port;
1511 	fpa.config_info.remote_repo_path = server_path;
1512 	fpa.config_info.git_url = git_url;
1513 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1514 	fpa.config_info.mirror_references = mirror_references;
1515 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1516 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1517 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1518 	    list_refs_only, verbosity, fetchfd, repo,
1519 	    fetch_progress, &fpa);
1520 	if (error)
1521 		goto done;
1522 
1523 	if (list_refs_only) {
1524 		error = list_remote_refs(&symrefs, &refs);
1525 		goto done;
1526 	}
1527 
1528 	error = got_object_id_str(&id_str, pack_hash);
1529 	if (error)
1530 		goto done;
1531 	if (verbosity >= 0)
1532 		printf("\nFetched %s.pack\n", id_str);
1533 	free(id_str);
1534 
1535 	/* Set up references provided with the pack file. */
1536 	TAILQ_FOREACH(pe, &refs, entry) {
1537 		const char *refname = pe->path;
1538 		struct got_object_id *id = pe->data;
1539 		char *remote_refname;
1540 
1541 		if (is_wanted_ref(&wanted_refs, refname) &&
1542 		    !mirror_references) {
1543 			error = create_wanted_ref(refname, id,
1544 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1545 			    verbosity - 1, repo);
1546 			if (error)
1547 				goto done;
1548 			continue;
1549 		}
1550 
1551 		error = create_ref(refname, id, verbosity - 1, repo);
1552 		if (error)
1553 			goto done;
1554 
1555 		if (mirror_references)
1556 			continue;
1557 
1558 		if (strncmp("refs/heads/", refname, 11) != 0)
1559 			continue;
1560 
1561 		if (asprintf(&remote_refname,
1562 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1563 		    refname + 11) == -1) {
1564 			error = got_error_from_errno("asprintf");
1565 			goto done;
1566 		}
1567 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1568 		free(remote_refname);
1569 		if (error)
1570 			goto done;
1571 	}
1572 
1573 	/* Set the HEAD reference if the server provided one. */
1574 	TAILQ_FOREACH(pe, &symrefs, entry) {
1575 		struct got_reference *target_ref;
1576 		const char *refname = pe->path;
1577 		const char *target = pe->data;
1578 		char *remote_refname = NULL, *remote_target = NULL;
1579 
1580 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1581 			continue;
1582 
1583 		error = got_ref_open(&target_ref, repo, target, 0);
1584 		if (error) {
1585 			if (error->code == GOT_ERR_NOT_REF) {
1586 				error = NULL;
1587 				continue;
1588 			}
1589 			goto done;
1590 		}
1591 
1592 		error = create_symref(refname, target_ref, verbosity, repo);
1593 		got_ref_close(target_ref);
1594 		if (error)
1595 			goto done;
1596 
1597 		if (mirror_references)
1598 			continue;
1599 
1600 		if (strncmp("refs/heads/", target, 11) != 0)
1601 			continue;
1602 
1603 		if (asprintf(&remote_refname,
1604 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1605 		    refname) == -1) {
1606 			error = got_error_from_errno("asprintf");
1607 			goto done;
1608 		}
1609 		if (asprintf(&remote_target,
1610 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1611 		    target + 11) == -1) {
1612 			error = got_error_from_errno("asprintf");
1613 			free(remote_refname);
1614 			goto done;
1615 		}
1616 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1617 		if (error) {
1618 			free(remote_refname);
1619 			free(remote_target);
1620 			if (error->code == GOT_ERR_NOT_REF) {
1621 				error = NULL;
1622 				continue;
1623 			}
1624 			goto done;
1625 		}
1626 		error = create_symref(remote_refname, target_ref,
1627 		    verbosity - 1, repo);
1628 		free(remote_refname);
1629 		free(remote_target);
1630 		got_ref_close(target_ref);
1631 		if (error)
1632 			goto done;
1633 	}
1634 	if (pe == NULL) {
1635 		/*
1636 		 * We failed to set the HEAD reference. If we asked for
1637 		 * a set of wanted branches use the first of one of those
1638 		 * which could be fetched instead.
1639 		 */
1640 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1641 			const char *target = pe->path;
1642 			struct got_reference *target_ref;
1643 
1644 			error = got_ref_open(&target_ref, repo, target, 0);
1645 			if (error) {
1646 				if (error->code == GOT_ERR_NOT_REF) {
1647 					error = NULL;
1648 					continue;
1649 				}
1650 				goto done;
1651 			}
1652 
1653 			error = create_symref(GOT_REF_HEAD, target_ref,
1654 			    verbosity, repo);
1655 			got_ref_close(target_ref);
1656 			if (error)
1657 				goto done;
1658 			break;
1659 		}
1660 	}
1661 
1662 	if (verbosity >= 0)
1663 		printf("Created %s repository '%s'\n",
1664 		    mirror_references ? "mirrored" : "cloned", repo_path);
1665 done:
1666 	if (fetchpid > 0) {
1667 		if (kill(fetchpid, SIGTERM) == -1)
1668 			error = got_error_from_errno("kill");
1669 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1670 			error = got_error_from_errno("waitpid");
1671 	}
1672 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1673 		error = got_error_from_errno("close");
1674 	if (repo)
1675 		got_repo_close(repo);
1676 	TAILQ_FOREACH(pe, &refs, entry) {
1677 		free((void *)pe->path);
1678 		free(pe->data);
1679 	}
1680 	got_pathlist_free(&refs);
1681 	TAILQ_FOREACH(pe, &symrefs, entry) {
1682 		free((void *)pe->path);
1683 		free(pe->data);
1684 	}
1685 	got_pathlist_free(&symrefs);
1686 	got_pathlist_free(&wanted_branches);
1687 	got_pathlist_free(&wanted_refs);
1688 	free(pack_hash);
1689 	free(proto);
1690 	free(host);
1691 	free(port);
1692 	free(server_path);
1693 	free(repo_name);
1694 	free(default_destdir);
1695 	free(git_url);
1696 	return error;
1697 }
1698 
1699 static const struct got_error *
1700 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1701     int replace_tags, int verbosity, struct got_repository *repo)
1702 {
1703 	const struct got_error *err = NULL;
1704 	char *new_id_str = NULL;
1705 	struct got_object_id *old_id = NULL;
1706 
1707 	err = got_object_id_str(&new_id_str, new_id);
1708 	if (err)
1709 		goto done;
1710 
1711 	if (!replace_tags &&
1712 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1713 		err = got_ref_resolve(&old_id, repo, ref);
1714 		if (err)
1715 			goto done;
1716 		if (got_object_id_cmp(old_id, new_id) == 0)
1717 			goto done;
1718 		if (verbosity >= 0) {
1719 			printf("Rejecting update of existing tag %s: %s\n",
1720 			    got_ref_get_name(ref), new_id_str);
1721 		}
1722 		goto done;
1723 	}
1724 
1725 	if (got_ref_is_symbolic(ref)) {
1726 		if (verbosity >= 0) {
1727 			printf("Replacing reference %s: %s\n",
1728 			    got_ref_get_name(ref),
1729 			    got_ref_get_symref_target(ref));
1730 		}
1731 		err = got_ref_change_symref_to_ref(ref, new_id);
1732 		if (err)
1733 			goto done;
1734 		err = got_ref_write(ref, repo);
1735 		if (err)
1736 			goto done;
1737 	} else {
1738 		err = got_ref_resolve(&old_id, repo, ref);
1739 		if (err)
1740 			goto done;
1741 		if (got_object_id_cmp(old_id, new_id) == 0)
1742 			goto done;
1743 
1744 		err = got_ref_change_ref(ref, new_id);
1745 		if (err)
1746 			goto done;
1747 		err = got_ref_write(ref, repo);
1748 		if (err)
1749 			goto done;
1750 	}
1751 
1752 	if (verbosity >= 0)
1753 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1754 		    new_id_str);
1755 done:
1756 	free(old_id);
1757 	free(new_id_str);
1758 	return err;
1759 }
1760 
1761 static const struct got_error *
1762 update_symref(const char *refname, struct got_reference *target_ref,
1763     int verbosity, struct got_repository *repo)
1764 {
1765 	const struct got_error *err = NULL, *unlock_err;
1766 	struct got_reference *symref;
1767 	int symref_is_locked = 0;
1768 
1769 	err = got_ref_open(&symref, repo, refname, 1);
1770 	if (err) {
1771 		if (err->code != GOT_ERR_NOT_REF)
1772 			return err;
1773 		err = got_ref_alloc_symref(&symref, refname, target_ref);
1774 		if (err)
1775 			goto done;
1776 
1777 		err = got_ref_write(symref, repo);
1778 		if (err)
1779 			goto done;
1780 
1781 		if (verbosity >= 0)
1782 			printf("Created reference %s: %s\n",
1783 			    got_ref_get_name(symref),
1784 			    got_ref_get_symref_target(symref));
1785 	} else {
1786 		symref_is_locked = 1;
1787 
1788 		if (strcmp(got_ref_get_symref_target(symref),
1789 		    got_ref_get_name(target_ref)) == 0)
1790 			goto done;
1791 
1792 		err = got_ref_change_symref(symref,
1793 		    got_ref_get_name(target_ref));
1794 		if (err)
1795 			goto done;
1796 
1797 		err = got_ref_write(symref, repo);
1798 		if (err)
1799 			goto done;
1800 
1801 		if (verbosity >= 0)
1802 			printf("Updated %s: %s\n", got_ref_get_name(symref),
1803 			    got_ref_get_symref_target(symref));
1804 
1805 	}
1806 done:
1807 	if (symref_is_locked) {
1808 		unlock_err = got_ref_unlock(symref);
1809 		if (unlock_err && err == NULL)
1810 			err = unlock_err;
1811 	}
1812 	got_ref_close(symref);
1813 	return err;
1814 }
1815 
1816 __dead static void
1817 usage_fetch(void)
1818 {
1819 	fprintf(stderr, "usage: %s fetch [-a] [-b branch] [-d] [-l] "
1820 	    "[-r repository-path] [-t] [-q] [-v] [-R reference] "
1821 	    "[remote-repository-name]\n",
1822 	    getprogname());
1823 	exit(1);
1824 }
1825 
1826 static const struct got_error *
1827 delete_missing_ref(struct got_reference *ref,
1828     int verbosity, struct got_repository *repo)
1829 {
1830 	const struct got_error *err = NULL;
1831 	struct got_object_id *id = NULL;
1832 	char *id_str = NULL;
1833 
1834 	if (got_ref_is_symbolic(ref)) {
1835 		err = got_ref_delete(ref, repo);
1836 		if (err)
1837 			return err;
1838 		if (verbosity >= 0) {
1839 			printf("Deleted reference %s: %s\n",
1840 			    got_ref_get_name(ref),
1841 			    got_ref_get_symref_target(ref));
1842 		}
1843 	} else {
1844 		err = got_ref_resolve(&id, repo, ref);
1845 		if (err)
1846 			return err;
1847 		err = got_object_id_str(&id_str, id);
1848 		if (err)
1849 			goto done;
1850 
1851 		err = got_ref_delete(ref, repo);
1852 		if (err)
1853 			goto done;
1854 		if (verbosity >= 0) {
1855 			printf("Deleted reference %s: %s\n",
1856 			    got_ref_get_name(ref), id_str);
1857 		}
1858 	}
1859 done:
1860 	free(id);
1861 	free(id_str);
1862 	return NULL;
1863 }
1864 
1865 static const struct got_error *
1866 delete_missing_refs(struct got_pathlist_head *their_refs,
1867     struct got_pathlist_head *their_symrefs,
1868     const struct got_remote_repo *remote,
1869     int verbosity, struct got_repository *repo)
1870 {
1871 	const struct got_error *err = NULL, *unlock_err;
1872 	struct got_reflist_head my_refs;
1873 	struct got_reflist_entry *re;
1874 	struct got_pathlist_entry *pe;
1875 	char *remote_namespace = NULL;
1876 	char *local_refname = NULL;
1877 
1878 	SIMPLEQ_INIT(&my_refs);
1879 
1880 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
1881 	    == -1)
1882 		return got_error_from_errno("asprintf");
1883 
1884 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
1885 	if (err)
1886 		goto done;
1887 
1888 	SIMPLEQ_FOREACH(re, &my_refs, entry) {
1889 		const char *refname = got_ref_get_name(re->ref);
1890 
1891 		if (!remote->mirror_references) {
1892 			if (strncmp(refname, remote_namespace,
1893 			    strlen(remote_namespace)) == 0) {
1894 				if (strcmp(refname + strlen(remote_namespace),
1895 				    GOT_REF_HEAD) == 0)
1896 					continue;
1897 				if (asprintf(&local_refname, "refs/heads/%s",
1898 				    refname + strlen(remote_namespace)) == -1) {
1899 					err = got_error_from_errno("asprintf");
1900 					goto done;
1901 				}
1902 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
1903 				continue;
1904 		}
1905 
1906 		TAILQ_FOREACH(pe, their_refs, entry) {
1907 			if (strcmp(local_refname, pe->path) == 0)
1908 				break;
1909 		}
1910 		if (pe != NULL)
1911 			continue;
1912 
1913 		TAILQ_FOREACH(pe, their_symrefs, entry) {
1914 			if (strcmp(local_refname, pe->path) == 0)
1915 				break;
1916 		}
1917 		if (pe != NULL)
1918 			continue;
1919 
1920 		err = delete_missing_ref(re->ref, verbosity, repo);
1921 		if (err)
1922 			break;
1923 
1924 		if (local_refname) {
1925 			struct got_reference *ref;
1926 			err = got_ref_open(&ref, repo, local_refname, 1);
1927 			if (err) {
1928 				if (err->code != GOT_ERR_NOT_REF)
1929 					break;
1930 				free(local_refname);
1931 				local_refname = NULL;
1932 				continue;
1933 			}
1934 			err = delete_missing_ref(ref, verbosity, repo);
1935 			if (err)
1936 				break;
1937 			unlock_err = got_ref_unlock(ref);
1938 			got_ref_close(ref);
1939 			if (unlock_err && err == NULL) {
1940 				err = unlock_err;
1941 				break;
1942 			}
1943 
1944 			free(local_refname);
1945 			local_refname = NULL;
1946 		}
1947 	}
1948 done:
1949 	free(remote_namespace);
1950 	free(local_refname);
1951 	return err;
1952 }
1953 
1954 static const struct got_error *
1955 update_wanted_ref(const char *refname, struct got_object_id *id,
1956     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1957 {
1958 	const struct got_error *err, *unlock_err;
1959 	char *remote_refname;
1960 	struct got_reference *ref;
1961 
1962 	if (strncmp("refs/", refname, 5) == 0)
1963 		refname += 5;
1964 
1965 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1966 	    remote_repo_name, refname) == -1)
1967 		return got_error_from_errno("asprintf");
1968 
1969 	err = got_ref_open(&ref, repo, remote_refname, 1);
1970 	if (err) {
1971 		if (err->code != GOT_ERR_NOT_REF)
1972 			goto done;
1973 		err = create_ref(remote_refname, id, verbosity, repo);
1974 	} else {
1975 		err = update_ref(ref, id, 0, verbosity, repo);
1976 		unlock_err = got_ref_unlock(ref);
1977 		if (unlock_err && err == NULL)
1978 			err = unlock_err;
1979 		got_ref_close(ref);
1980 	}
1981 done:
1982 	free(remote_refname);
1983 	return err;
1984 }
1985 
1986 static const struct got_error *
1987 cmd_fetch(int argc, char *argv[])
1988 {
1989 	const struct got_error *error = NULL, *unlock_err;
1990 	char *cwd = NULL, *repo_path = NULL;
1991 	const char *remote_name;
1992 	char *proto = NULL, *host = NULL, *port = NULL;
1993 	char *repo_name = NULL, *server_path = NULL;
1994 	const struct got_remote_repo *remotes, *remote = NULL;
1995 	int nremotes;
1996 	char *id_str = NULL;
1997 	struct got_repository *repo = NULL;
1998 	struct got_worktree *worktree = NULL;
1999 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2000 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2001 	struct got_pathlist_entry *pe;
2002 	struct got_object_id *pack_hash = NULL;
2003 	int i, ch, fetchfd = -1, fetchstatus;
2004 	pid_t fetchpid = -1;
2005 	struct got_fetch_progress_arg fpa;
2006 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2007 	int delete_refs = 0, replace_tags = 0;
2008 
2009 	TAILQ_INIT(&refs);
2010 	TAILQ_INIT(&symrefs);
2011 	TAILQ_INIT(&wanted_branches);
2012 	TAILQ_INIT(&wanted_refs);
2013 
2014 	while ((ch = getopt(argc, argv, "ab:dlr:tvqR:")) != -1) {
2015 		switch (ch) {
2016 		case 'a':
2017 			fetch_all_branches = 1;
2018 			break;
2019 		case 'b':
2020 			error = got_pathlist_append(&wanted_branches,
2021 			    optarg, NULL);
2022 			if (error)
2023 				return error;
2024 			break;
2025 		case 'd':
2026 			delete_refs = 1;
2027 			break;
2028 		case 'l':
2029 			list_refs_only = 1;
2030 			break;
2031 		case 'r':
2032 			repo_path = realpath(optarg, NULL);
2033 			if (repo_path == NULL)
2034 				return got_error_from_errno2("realpath",
2035 				    optarg);
2036 			got_path_strip_trailing_slashes(repo_path);
2037 			break;
2038 		case 't':
2039 			replace_tags = 1;
2040 			break;
2041 		case 'v':
2042 			if (verbosity < 0)
2043 				verbosity = 0;
2044 			else if (verbosity < 3)
2045 				verbosity++;
2046 			break;
2047 		case 'q':
2048 			verbosity = -1;
2049 			break;
2050 		case 'R':
2051 			error = got_pathlist_append(&wanted_refs,
2052 			    optarg, NULL);
2053 			if (error)
2054 				return error;
2055 			break;
2056 		default:
2057 			usage_fetch();
2058 			break;
2059 		}
2060 	}
2061 	argc -= optind;
2062 	argv += optind;
2063 
2064 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2065 		errx(1, "-a and -b options are mutually exclusive");
2066 	if (list_refs_only) {
2067 		if (!TAILQ_EMPTY(&wanted_branches))
2068 			errx(1, "-l and -b options are mutually exclusive");
2069 		if (fetch_all_branches)
2070 			errx(1, "-l and -a options are mutually exclusive");
2071 		if (delete_refs)
2072 			errx(1, "-l and -d options are mutually exclusive");
2073 		if (verbosity == -1)
2074 			errx(1, "-l and -q options are mutually exclusive");
2075 	}
2076 
2077 	if (argc == 0)
2078 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2079 	else if (argc == 1)
2080 		remote_name = argv[0];
2081 	else
2082 		usage_fetch();
2083 
2084 	cwd = getcwd(NULL, 0);
2085 	if (cwd == NULL) {
2086 		error = got_error_from_errno("getcwd");
2087 		goto done;
2088 	}
2089 
2090 	if (repo_path == NULL) {
2091 		error = got_worktree_open(&worktree, cwd);
2092 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2093 			goto done;
2094 		else
2095 			error = NULL;
2096 		if (worktree) {
2097 			repo_path =
2098 			    strdup(got_worktree_get_repo_path(worktree));
2099 			if (repo_path == NULL)
2100 				error = got_error_from_errno("strdup");
2101 			if (error)
2102 				goto done;
2103 		} else {
2104 			repo_path = strdup(cwd);
2105 			if (repo_path == NULL) {
2106 				error = got_error_from_errno("strdup");
2107 				goto done;
2108 			}
2109 		}
2110 	}
2111 
2112 	error = got_repo_open(&repo, repo_path, NULL);
2113 	if (error)
2114 		goto done;
2115 
2116 	if (worktree) {
2117 		worktree_conf = got_worktree_get_gotconfig(worktree);
2118 		if (worktree_conf) {
2119 			got_gotconfig_get_remotes(&nremotes, &remotes,
2120 			    worktree_conf);
2121 			for (i = 0; i < nremotes; i++) {
2122 				if (strcmp(remotes[i].name, remote_name) == 0) {
2123 					remote = &remotes[i];
2124 					break;
2125 				}
2126 			}
2127 		}
2128 	}
2129 	if (remote == NULL) {
2130 		repo_conf = got_repo_get_gotconfig(repo);
2131 		if (repo_conf) {
2132 			got_gotconfig_get_remotes(&nremotes, &remotes,
2133 			    repo_conf);
2134 			for (i = 0; i < nremotes; i++) {
2135 				if (strcmp(remotes[i].name, remote_name) == 0) {
2136 					remote = &remotes[i];
2137 					break;
2138 				}
2139 			}
2140 		}
2141 	}
2142 	if (remote == NULL) {
2143 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2144 		for (i = 0; i < nremotes; i++) {
2145 			if (strcmp(remotes[i].name, remote_name) == 0) {
2146 				remote = &remotes[i];
2147 				break;
2148 			}
2149 		}
2150 	}
2151 	if (remote == NULL) {
2152 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2153 		goto done;
2154 	}
2155 
2156 	if (TAILQ_EMPTY(&wanted_branches) && remote->nbranches > 0) {
2157 		for (i = 0; i < remote->nbranches; i++) {
2158 			got_pathlist_append(&wanted_branches,
2159 			    remote->branches[i], NULL);
2160 		}
2161 
2162 	}
2163 
2164 	error = got_fetch_parse_uri(&proto, &host, &port, &server_path,
2165 	    &repo_name, remote->url);
2166 	if (error)
2167 		goto done;
2168 
2169 	if (strcmp(proto, "git") == 0) {
2170 #ifndef PROFILE
2171 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2172 		    "sendfd dns inet unveil", NULL) == -1)
2173 			err(1, "pledge");
2174 #endif
2175 	} else if (strcmp(proto, "git+ssh") == 0 ||
2176 	    strcmp(proto, "ssh") == 0) {
2177 #ifndef PROFILE
2178 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2179 		    "sendfd unveil", NULL) == -1)
2180 			err(1, "pledge");
2181 #endif
2182 	} else if (strcmp(proto, "http") == 0 ||
2183 	    strcmp(proto, "git+http") == 0) {
2184 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2185 		goto done;
2186 	} else {
2187 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2188 		goto done;
2189 	}
2190 
2191 	if (strcmp(proto, "git+ssh") == 0 || strcmp(proto, "ssh") == 0) {
2192 		if (unveil(GOT_FETCH_PATH_SSH, "x") != 0) {
2193 			error = got_error_from_errno2("unveil",
2194 			    GOT_FETCH_PATH_SSH);
2195 			goto done;
2196 		}
2197 	}
2198 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2199 	if (error)
2200 		goto done;
2201 
2202 	if (verbosity >= 0)
2203 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
2204 		    port ? ":" : "", port ? port : "");
2205 
2206 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2207 	    server_path, verbosity);
2208 	if (error)
2209 		goto done;
2210 
2211 	fpa.last_scaled_size[0] = '\0';
2212 	fpa.last_p_indexed = -1;
2213 	fpa.last_p_resolved = -1;
2214 	fpa.verbosity = verbosity;
2215 	fpa.repo = repo;
2216 	fpa.create_configs = 0;
2217 	fpa.configs_created = 0;
2218 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2219 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2220 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2221 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2222 	    fetch_progress, &fpa);
2223 	if (error)
2224 		goto done;
2225 
2226 	if (list_refs_only) {
2227 		error = list_remote_refs(&symrefs, &refs);
2228 		goto done;
2229 	}
2230 
2231 	if (pack_hash == NULL) {
2232 		if (verbosity >= 0)
2233 			printf("Already up-to-date\n");
2234 	} else if (verbosity >= 0) {
2235 		error = got_object_id_str(&id_str, pack_hash);
2236 		if (error)
2237 			goto done;
2238 		printf("\nFetched %s.pack\n", id_str);
2239 		free(id_str);
2240 		id_str = NULL;
2241 	}
2242 
2243 	/* Update references provided with the pack file. */
2244 	TAILQ_FOREACH(pe, &refs, entry) {
2245 		const char *refname = pe->path;
2246 		struct got_object_id *id = pe->data;
2247 		struct got_reference *ref;
2248 		char *remote_refname;
2249 
2250 		if (is_wanted_ref(&wanted_refs, refname) &&
2251 		    !remote->mirror_references) {
2252 			error = update_wanted_ref(refname, id,
2253 			    remote->name, verbosity, repo);
2254 			if (error)
2255 				goto done;
2256 			continue;
2257 		}
2258 
2259 		if (remote->mirror_references ||
2260 		    strncmp("refs/tags/", refname, 10) == 0) {
2261 			error = got_ref_open(&ref, repo, refname, 1);
2262 			if (error) {
2263 				if (error->code != GOT_ERR_NOT_REF)
2264 					goto done;
2265 				error = create_ref(refname, id, verbosity,
2266 				    repo);
2267 				if (error)
2268 					goto done;
2269 			} else {
2270 				error = update_ref(ref, id, replace_tags,
2271 				    verbosity, repo);
2272 				unlock_err = got_ref_unlock(ref);
2273 				if (unlock_err && error == NULL)
2274 					error = unlock_err;
2275 				got_ref_close(ref);
2276 				if (error)
2277 					goto done;
2278 			}
2279 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2280 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2281 			    remote_name, refname + 11) == -1) {
2282 				error = got_error_from_errno("asprintf");
2283 				goto done;
2284 			}
2285 
2286 			error = got_ref_open(&ref, repo, remote_refname, 1);
2287 			if (error) {
2288 				if (error->code != GOT_ERR_NOT_REF)
2289 					goto done;
2290 				error = create_ref(remote_refname, id, 
2291 				    verbosity, repo);
2292 				if (error)
2293 					goto done;
2294 			} else {
2295 				error = update_ref(ref, id, replace_tags,
2296 				    verbosity, repo);
2297 				unlock_err = got_ref_unlock(ref);
2298 				if (unlock_err && error == NULL)
2299 					error = unlock_err;
2300 				got_ref_close(ref);
2301 				if (error)
2302 					goto done;
2303 			}
2304 
2305 			/* Also create a local branch if none exists yet. */
2306 			error = got_ref_open(&ref, repo, refname, 1);
2307 			if (error) {
2308 				if (error->code != GOT_ERR_NOT_REF)
2309 					goto done;
2310 				error = create_ref(refname, id, verbosity,
2311 				    repo);
2312 				if (error)
2313 					goto done;
2314 			} else {
2315 				unlock_err = got_ref_unlock(ref);
2316 				if (unlock_err && error == NULL)
2317 					error = unlock_err;
2318 				got_ref_close(ref);
2319 			}
2320 		}
2321 	}
2322 	if (delete_refs) {
2323 		error = delete_missing_refs(&refs, &symrefs, remote,
2324 		    verbosity, repo);
2325 		if (error)
2326 			goto done;
2327 	}
2328 
2329 	if (!remote->mirror_references) {
2330 		/* Update remote HEAD reference if the server provided one. */
2331 		TAILQ_FOREACH(pe, &symrefs, entry) {
2332 			struct got_reference *target_ref;
2333 			const char *refname = pe->path;
2334 			const char *target = pe->data;
2335 			char *remote_refname = NULL, *remote_target = NULL;
2336 
2337 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2338 				continue;
2339 
2340 			if (strncmp("refs/heads/", target, 11) != 0)
2341 				continue;
2342 
2343 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2344 			    remote->name, refname) == -1) {
2345 				error = got_error_from_errno("asprintf");
2346 				goto done;
2347 			}
2348 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2349 			    remote->name, target + 11) == -1) {
2350 				error = got_error_from_errno("asprintf");
2351 				free(remote_refname);
2352 				goto done;
2353 			}
2354 
2355 			error = got_ref_open(&target_ref, repo, remote_target,
2356 			    0);
2357 			if (error) {
2358 				free(remote_refname);
2359 				free(remote_target);
2360 				if (error->code == GOT_ERR_NOT_REF) {
2361 					error = NULL;
2362 					continue;
2363 				}
2364 				goto done;
2365 			}
2366 			error = update_symref(remote_refname, target_ref,
2367 			    verbosity, repo);
2368 			free(remote_refname);
2369 			free(remote_target);
2370 			got_ref_close(target_ref);
2371 			if (error)
2372 				goto done;
2373 		}
2374 	}
2375 done:
2376 	if (fetchpid > 0) {
2377 		if (kill(fetchpid, SIGTERM) == -1)
2378 			error = got_error_from_errno("kill");
2379 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2380 			error = got_error_from_errno("waitpid");
2381 	}
2382 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2383 		error = got_error_from_errno("close");
2384 	if (repo)
2385 		got_repo_close(repo);
2386 	if (worktree)
2387 		got_worktree_close(worktree);
2388 	TAILQ_FOREACH(pe, &refs, entry) {
2389 		free((void *)pe->path);
2390 		free(pe->data);
2391 	}
2392 	got_pathlist_free(&refs);
2393 	TAILQ_FOREACH(pe, &symrefs, entry) {
2394 		free((void *)pe->path);
2395 		free(pe->data);
2396 	}
2397 	got_pathlist_free(&symrefs);
2398 	got_pathlist_free(&wanted_branches);
2399 	got_pathlist_free(&wanted_refs);
2400 	free(id_str);
2401 	free(cwd);
2402 	free(repo_path);
2403 	free(pack_hash);
2404 	free(proto);
2405 	free(host);
2406 	free(port);
2407 	free(server_path);
2408 	free(repo_name);
2409 	return error;
2410 }
2411 
2412 
2413 __dead static void
2414 usage_checkout(void)
2415 {
2416 	fprintf(stderr, "usage: %s checkout [-E] [-b branch] [-c commit] "
2417 	    "[-p prefix] repository-path [worktree-path]\n", getprogname());
2418 	exit(1);
2419 }
2420 
2421 static void
2422 show_worktree_base_ref_warning(void)
2423 {
2424 	fprintf(stderr, "%s: warning: could not create a reference "
2425 	    "to the work tree's base commit; the commit could be "
2426 	    "garbage-collected by Git; making the repository "
2427 	    "writable and running 'got update' will prevent this\n",
2428 	    getprogname());
2429 }
2430 
2431 struct got_checkout_progress_arg {
2432 	const char *worktree_path;
2433 	int had_base_commit_ref_error;
2434 };
2435 
2436 static const struct got_error *
2437 checkout_progress(void *arg, unsigned char status, const char *path)
2438 {
2439 	struct got_checkout_progress_arg *a = arg;
2440 
2441 	/* Base commit bump happens silently. */
2442 	if (status == GOT_STATUS_BUMP_BASE)
2443 		return NULL;
2444 
2445 	if (status == GOT_STATUS_BASE_REF_ERR) {
2446 		a->had_base_commit_ref_error = 1;
2447 		return NULL;
2448 	}
2449 
2450 	while (path[0] == '/')
2451 		path++;
2452 
2453 	printf("%c  %s/%s\n", status, a->worktree_path, path);
2454 	return NULL;
2455 }
2456 
2457 static const struct got_error *
2458 check_cancelled(void *arg)
2459 {
2460 	if (sigint_received || sigpipe_received)
2461 		return got_error(GOT_ERR_CANCELLED);
2462 	return NULL;
2463 }
2464 
2465 static const struct got_error *
2466 check_linear_ancestry(struct got_object_id *commit_id,
2467     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2468     struct got_repository *repo)
2469 {
2470 	const struct got_error *err = NULL;
2471 	struct got_object_id *yca_id;
2472 
2473 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2474 	    commit_id, base_commit_id, repo, check_cancelled, NULL);
2475 	if (err)
2476 		return err;
2477 
2478 	if (yca_id == NULL)
2479 		return got_error(GOT_ERR_ANCESTRY);
2480 
2481 	/*
2482 	 * Require a straight line of history between the target commit
2483 	 * and the work tree's base commit.
2484 	 *
2485 	 * Non-linear situations such as this require a rebase:
2486 	 *
2487 	 * (commit) D       F (base_commit)
2488 	 *           \     /
2489 	 *            C   E
2490 	 *             \ /
2491 	 *              B (yca)
2492 	 *              |
2493 	 *              A
2494 	 *
2495 	 * 'got update' only handles linear cases:
2496 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2497 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2498 	 */
2499 	if (allow_forwards_in_time_only) {
2500 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2501 		return got_error(GOT_ERR_ANCESTRY);
2502 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2503 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2504 		return got_error(GOT_ERR_ANCESTRY);
2505 
2506 	free(yca_id);
2507 	return NULL;
2508 }
2509 
2510 static const struct got_error *
2511 check_same_branch(struct got_object_id *commit_id,
2512     struct got_reference *head_ref, struct got_object_id *yca_id,
2513     struct got_repository *repo)
2514 {
2515 	const struct got_error *err = NULL;
2516 	struct got_commit_graph *graph = NULL;
2517 	struct got_object_id *head_commit_id = NULL;
2518 	int is_same_branch = 0;
2519 
2520 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2521 	if (err)
2522 		goto done;
2523 
2524 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2525 		is_same_branch = 1;
2526 		goto done;
2527 	}
2528 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2529 		is_same_branch = 1;
2530 		goto done;
2531 	}
2532 
2533 	err = got_commit_graph_open(&graph, "/", 1);
2534 	if (err)
2535 		goto done;
2536 
2537 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2538 	    check_cancelled, NULL);
2539 	if (err)
2540 		goto done;
2541 
2542 	for (;;) {
2543 		struct got_object_id *id;
2544 		err = got_commit_graph_iter_next(&id, graph, repo,
2545 		    check_cancelled, NULL);
2546 		if (err) {
2547 			if (err->code == GOT_ERR_ITER_COMPLETED)
2548 				err = NULL;
2549 			break;
2550 		}
2551 
2552 		if (id) {
2553 			if (yca_id && got_object_id_cmp(id, yca_id) == 0)
2554 				break;
2555 			if (got_object_id_cmp(id, commit_id) == 0) {
2556 				is_same_branch = 1;
2557 				break;
2558 			}
2559 		}
2560 	}
2561 done:
2562 	if (graph)
2563 		got_commit_graph_close(graph);
2564 	free(head_commit_id);
2565 	if (!err && !is_same_branch)
2566 		err = got_error(GOT_ERR_ANCESTRY);
2567 	return err;
2568 }
2569 
2570 static const struct got_error *
2571 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2572 {
2573 	static char msg[512];
2574 	const char *branch_name;
2575 
2576 	if (got_ref_is_symbolic(ref))
2577 		branch_name = got_ref_get_symref_target(ref);
2578 	else
2579 		branch_name = got_ref_get_name(ref);
2580 
2581 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2582 		branch_name += 11;
2583 
2584 	snprintf(msg, sizeof(msg),
2585 	    "target commit is not contained in branch '%s'; "
2586 	    "the branch to use must be specified with -b; "
2587 	    "if necessary a new branch can be created for "
2588 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2589 	    branch_name, commit_id_str);
2590 
2591 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2592 }
2593 
2594 static const struct got_error *
2595 cmd_checkout(int argc, char *argv[])
2596 {
2597 	const struct got_error *error = NULL;
2598 	struct got_repository *repo = NULL;
2599 	struct got_reference *head_ref = NULL;
2600 	struct got_worktree *worktree = NULL;
2601 	char *repo_path = NULL;
2602 	char *worktree_path = NULL;
2603 	const char *path_prefix = "";
2604 	const char *branch_name = GOT_REF_HEAD;
2605 	char *commit_id_str = NULL;
2606 	char *cwd = NULL;
2607 	int ch, same_path_prefix, allow_nonempty = 0;
2608 	struct got_pathlist_head paths;
2609 	struct got_checkout_progress_arg cpa;
2610 
2611 	TAILQ_INIT(&paths);
2612 
2613 	while ((ch = getopt(argc, argv, "b:c:Ep:")) != -1) {
2614 		switch (ch) {
2615 		case 'b':
2616 			branch_name = optarg;
2617 			break;
2618 		case 'c':
2619 			commit_id_str = strdup(optarg);
2620 			if (commit_id_str == NULL)
2621 				return got_error_from_errno("strdup");
2622 			break;
2623 		case 'E':
2624 			allow_nonempty = 1;
2625 			break;
2626 		case 'p':
2627 			path_prefix = optarg;
2628 			break;
2629 		default:
2630 			usage_checkout();
2631 			/* NOTREACHED */
2632 		}
2633 	}
2634 
2635 	argc -= optind;
2636 	argv += optind;
2637 
2638 #ifndef PROFILE
2639 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2640 	    "unveil", NULL) == -1)
2641 		err(1, "pledge");
2642 #endif
2643 	if (argc == 1) {
2644 		char *base, *dotgit;
2645 		const char *path;
2646 		repo_path = realpath(argv[0], NULL);
2647 		if (repo_path == NULL)
2648 			return got_error_from_errno2("realpath", argv[0]);
2649 		cwd = getcwd(NULL, 0);
2650 		if (cwd == NULL) {
2651 			error = got_error_from_errno("getcwd");
2652 			goto done;
2653 		}
2654 		if (path_prefix[0])
2655 			path = path_prefix;
2656 		else
2657 			path = repo_path;
2658 		error = got_path_basename(&base, path);
2659 		if (error)
2660 			goto done;
2661 		dotgit = strstr(base, ".git");
2662 		if (dotgit)
2663 			*dotgit = '\0';
2664 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
2665 			error = got_error_from_errno("asprintf");
2666 			free(base);
2667 			goto done;
2668 		}
2669 		free(base);
2670 	} else if (argc == 2) {
2671 		repo_path = realpath(argv[0], NULL);
2672 		if (repo_path == NULL) {
2673 			error = got_error_from_errno2("realpath", argv[0]);
2674 			goto done;
2675 		}
2676 		worktree_path = realpath(argv[1], NULL);
2677 		if (worktree_path == NULL) {
2678 			if (errno != ENOENT) {
2679 				error = got_error_from_errno2("realpath",
2680 				    argv[1]);
2681 				goto done;
2682 			}
2683 			worktree_path = strdup(argv[1]);
2684 			if (worktree_path == NULL) {
2685 				error = got_error_from_errno("strdup");
2686 				goto done;
2687 			}
2688 		}
2689 	} else
2690 		usage_checkout();
2691 
2692 	got_path_strip_trailing_slashes(repo_path);
2693 	got_path_strip_trailing_slashes(worktree_path);
2694 
2695 	error = got_repo_open(&repo, repo_path, NULL);
2696 	if (error != NULL)
2697 		goto done;
2698 
2699 	/* Pre-create work tree path for unveil(2) */
2700 	error = got_path_mkdir(worktree_path);
2701 	if (error) {
2702 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
2703 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2704 			goto done;
2705 		if (!allow_nonempty &&
2706 		    !got_path_dir_is_empty(worktree_path)) {
2707 			error = got_error_path(worktree_path,
2708 			    GOT_ERR_DIR_NOT_EMPTY);
2709 			goto done;
2710 		}
2711 	}
2712 
2713 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
2714 	if (error)
2715 		goto done;
2716 
2717 	error = got_ref_open(&head_ref, repo, branch_name, 0);
2718 	if (error != NULL)
2719 		goto done;
2720 
2721 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
2722 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2723 		goto done;
2724 
2725 	error = got_worktree_open(&worktree, worktree_path);
2726 	if (error != NULL)
2727 		goto done;
2728 
2729 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
2730 	    path_prefix);
2731 	if (error != NULL)
2732 		goto done;
2733 	if (!same_path_prefix) {
2734 		error = got_error(GOT_ERR_PATH_PREFIX);
2735 		goto done;
2736 	}
2737 
2738 	if (commit_id_str) {
2739 		struct got_object_id *commit_id;
2740 		error = got_repo_match_object_id(&commit_id, NULL,
2741 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, 1, repo);
2742 		if (error)
2743 			goto done;
2744 		error = check_linear_ancestry(commit_id,
2745 		    got_worktree_get_base_commit_id(worktree), 0, repo);
2746 		if (error != NULL) {
2747 			free(commit_id);
2748 			if (error->code == GOT_ERR_ANCESTRY) {
2749 				error = checkout_ancestry_error(
2750 				    head_ref, commit_id_str);
2751 			}
2752 			goto done;
2753 		}
2754 		error = check_same_branch(commit_id, head_ref, NULL, repo);
2755 		if (error) {
2756 			if (error->code == GOT_ERR_ANCESTRY) {
2757 				error = checkout_ancestry_error(
2758 				    head_ref, commit_id_str);
2759 			}
2760 			goto done;
2761 		}
2762 		error = got_worktree_set_base_commit_id(worktree, repo,
2763 		    commit_id);
2764 		free(commit_id);
2765 		if (error)
2766 			goto done;
2767 	}
2768 
2769 	error = got_pathlist_append(&paths, "", NULL);
2770 	if (error)
2771 		goto done;
2772 	cpa.worktree_path = worktree_path;
2773 	cpa.had_base_commit_ref_error = 0;
2774 	error = got_worktree_checkout_files(worktree, &paths, repo,
2775 	    checkout_progress, &cpa, check_cancelled, NULL);
2776 	if (error != NULL)
2777 		goto done;
2778 
2779 	printf("Now shut up and hack\n");
2780 	if (cpa.had_base_commit_ref_error)
2781 		show_worktree_base_ref_warning();
2782 done:
2783 	got_pathlist_free(&paths);
2784 	free(commit_id_str);
2785 	free(repo_path);
2786 	free(worktree_path);
2787 	free(cwd);
2788 	return error;
2789 }
2790 
2791 struct got_update_progress_arg {
2792 	int did_something;
2793 	int conflicts;
2794 	int obstructed;
2795 	int not_updated;
2796 };
2797 
2798 void
2799 print_update_progress_stats(struct got_update_progress_arg *upa)
2800 {
2801 	if (!upa->did_something)
2802 		return;
2803 
2804 	if (upa->conflicts > 0)
2805 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
2806 	if (upa->obstructed > 0)
2807 		printf("File paths obstructed by a non-regular file: %d\n",
2808 		    upa->obstructed);
2809 	if (upa->not_updated > 0)
2810 		printf("Files not updated because of existing merge "
2811 		    "conflicts: %d\n", upa->not_updated);
2812 }
2813 
2814 __dead static void
2815 usage_update(void)
2816 {
2817 	fprintf(stderr, "usage: %s update [-b branch] [-c commit] [path ...]\n",
2818 	    getprogname());
2819 	exit(1);
2820 }
2821 
2822 static const struct got_error *
2823 update_progress(void *arg, unsigned char status, const char *path)
2824 {
2825 	struct got_update_progress_arg *upa = arg;
2826 
2827 	if (status == GOT_STATUS_EXISTS ||
2828 	    status == GOT_STATUS_BASE_REF_ERR)
2829 		return NULL;
2830 
2831 	upa->did_something = 1;
2832 
2833 	/* Base commit bump happens silently. */
2834 	if (status == GOT_STATUS_BUMP_BASE)
2835 		return NULL;
2836 
2837 	if (status == GOT_STATUS_CONFLICT)
2838 		upa->conflicts++;
2839 	if (status == GOT_STATUS_OBSTRUCTED)
2840 		upa->obstructed++;
2841 	if (status == GOT_STATUS_CANNOT_UPDATE)
2842 		upa->not_updated++;
2843 
2844 	while (path[0] == '/')
2845 		path++;
2846 	printf("%c  %s\n", status, path);
2847 	return NULL;
2848 }
2849 
2850 static const struct got_error *
2851 switch_head_ref(struct got_reference *head_ref,
2852     struct got_object_id *commit_id, struct got_worktree *worktree,
2853     struct got_repository *repo)
2854 {
2855 	const struct got_error *err = NULL;
2856 	char *base_id_str;
2857 	int ref_has_moved = 0;
2858 
2859 	/* Trivial case: switching between two different references. */
2860 	if (strcmp(got_ref_get_name(head_ref),
2861 	    got_worktree_get_head_ref_name(worktree)) != 0) {
2862 		printf("Switching work tree from %s to %s\n",
2863 		    got_worktree_get_head_ref_name(worktree),
2864 		    got_ref_get_name(head_ref));
2865 		return got_worktree_set_head_ref(worktree, head_ref);
2866 	}
2867 
2868 	err = check_linear_ancestry(commit_id,
2869 	    got_worktree_get_base_commit_id(worktree), 0, repo);
2870 	if (err) {
2871 		if (err->code != GOT_ERR_ANCESTRY)
2872 			return err;
2873 		ref_has_moved = 1;
2874 	}
2875 	if (!ref_has_moved)
2876 		return NULL;
2877 
2878 	/* Switching to a rebased branch with the same reference name. */
2879 	err = got_object_id_str(&base_id_str,
2880 	    got_worktree_get_base_commit_id(worktree));
2881 	if (err)
2882 		return err;
2883 	printf("Reference %s now points at a different branch\n",
2884 	    got_worktree_get_head_ref_name(worktree));
2885 	printf("Switching work tree from %s to %s\n", base_id_str,
2886 	    got_worktree_get_head_ref_name(worktree));
2887 	return NULL;
2888 }
2889 
2890 static const struct got_error *
2891 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
2892 {
2893 	const struct got_error *err;
2894 	int in_progress;
2895 
2896 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
2897 	if (err)
2898 		return err;
2899 	if (in_progress)
2900 		return got_error(GOT_ERR_REBASING);
2901 
2902 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
2903 	if (err)
2904 		return err;
2905 	if (in_progress)
2906 		return got_error(GOT_ERR_HISTEDIT_BUSY);
2907 
2908 	return NULL;
2909 }
2910 
2911 static const struct got_error *
2912 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
2913     char *argv[], struct got_worktree *worktree)
2914 {
2915 	const struct got_error *err = NULL;
2916 	char *path;
2917 	int i;
2918 
2919 	if (argc == 0) {
2920 		path = strdup("");
2921 		if (path == NULL)
2922 			return got_error_from_errno("strdup");
2923 		return got_pathlist_append(paths, path, NULL);
2924 	}
2925 
2926 	for (i = 0; i < argc; i++) {
2927 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
2928 		if (err)
2929 			break;
2930 		err = got_pathlist_append(paths, path, NULL);
2931 		if (err) {
2932 			free(path);
2933 			break;
2934 		}
2935 	}
2936 
2937 	return err;
2938 }
2939 
2940 static const struct got_error *
2941 wrap_not_worktree_error(const struct got_error *orig_err,
2942     const char *cmdname, const char *path)
2943 {
2944 	const struct got_error *err;
2945 	struct got_repository *repo;
2946 	static char msg[512];
2947 
2948 	err = got_repo_open(&repo, path, NULL);
2949 	if (err)
2950 		return orig_err;
2951 
2952 	snprintf(msg, sizeof(msg),
2953 	    "'got %s' needs a work tree in addition to a git repository\n"
2954 	    "Work trees can be checked out from this Git repository with "
2955 	    "'got checkout'.\n"
2956 	    "The got(1) manual page contains more information.", cmdname);
2957 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
2958 	got_repo_close(repo);
2959 	return err;
2960 }
2961 
2962 static const struct got_error *
2963 cmd_update(int argc, char *argv[])
2964 {
2965 	const struct got_error *error = NULL;
2966 	struct got_repository *repo = NULL;
2967 	struct got_worktree *worktree = NULL;
2968 	char *worktree_path = NULL;
2969 	struct got_object_id *commit_id = NULL;
2970 	char *commit_id_str = NULL;
2971 	const char *branch_name = NULL;
2972 	struct got_reference *head_ref = NULL;
2973 	struct got_pathlist_head paths;
2974 	struct got_pathlist_entry *pe;
2975 	int ch;
2976 	struct got_update_progress_arg upa;
2977 
2978 	TAILQ_INIT(&paths);
2979 
2980 	while ((ch = getopt(argc, argv, "b:c:")) != -1) {
2981 		switch (ch) {
2982 		case 'b':
2983 			branch_name = optarg;
2984 			break;
2985 		case 'c':
2986 			commit_id_str = strdup(optarg);
2987 			if (commit_id_str == NULL)
2988 				return got_error_from_errno("strdup");
2989 			break;
2990 		default:
2991 			usage_update();
2992 			/* NOTREACHED */
2993 		}
2994 	}
2995 
2996 	argc -= optind;
2997 	argv += optind;
2998 
2999 #ifndef PROFILE
3000 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3001 	    "unveil", NULL) == -1)
3002 		err(1, "pledge");
3003 #endif
3004 	worktree_path = getcwd(NULL, 0);
3005 	if (worktree_path == NULL) {
3006 		error = got_error_from_errno("getcwd");
3007 		goto done;
3008 	}
3009 	error = got_worktree_open(&worktree, worktree_path);
3010 	if (error) {
3011 		if (error->code == GOT_ERR_NOT_WORKTREE)
3012 			error = wrap_not_worktree_error(error, "update",
3013 			    worktree_path);
3014 		goto done;
3015 	}
3016 
3017 	error = check_rebase_or_histedit_in_progress(worktree);
3018 	if (error)
3019 		goto done;
3020 
3021 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3022 	    NULL);
3023 	if (error != NULL)
3024 		goto done;
3025 
3026 	error = apply_unveil(got_repo_get_path(repo), 0,
3027 	    got_worktree_get_root_path(worktree));
3028 	if (error)
3029 		goto done;
3030 
3031 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3032 	if (error)
3033 		goto done;
3034 
3035 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3036 	    got_worktree_get_head_ref_name(worktree), 0);
3037 	if (error != NULL)
3038 		goto done;
3039 	if (commit_id_str == NULL) {
3040 		error = got_ref_resolve(&commit_id, repo, head_ref);
3041 		if (error != NULL)
3042 			goto done;
3043 		error = got_object_id_str(&commit_id_str, commit_id);
3044 		if (error != NULL)
3045 			goto done;
3046 	} else {
3047 		error = got_repo_match_object_id(&commit_id, NULL,
3048 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, 1, repo);
3049 		free(commit_id_str);
3050 		commit_id_str = NULL;
3051 		if (error)
3052 			goto done;
3053 		error = got_object_id_str(&commit_id_str, commit_id);
3054 		if (error)
3055 			goto done;
3056 	}
3057 
3058 	if (branch_name) {
3059 		struct got_object_id *head_commit_id;
3060 		TAILQ_FOREACH(pe, &paths, entry) {
3061 			if (pe->path_len == 0)
3062 				continue;
3063 			error = got_error_msg(GOT_ERR_BAD_PATH,
3064 			    "switching between branches requires that "
3065 			    "the entire work tree gets updated");
3066 			goto done;
3067 		}
3068 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3069 		if (error)
3070 			goto done;
3071 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3072 		    repo);
3073 		free(head_commit_id);
3074 		if (error != NULL)
3075 			goto done;
3076 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3077 		if (error)
3078 			goto done;
3079 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3080 		if (error)
3081 			goto done;
3082 	} else {
3083 		error = check_linear_ancestry(commit_id,
3084 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3085 		if (error != NULL) {
3086 			if (error->code == GOT_ERR_ANCESTRY)
3087 				error = got_error(GOT_ERR_BRANCH_MOVED);
3088 			goto done;
3089 		}
3090 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3091 		if (error)
3092 			goto done;
3093 	}
3094 
3095 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3096 	    commit_id) != 0) {
3097 		error = got_worktree_set_base_commit_id(worktree, repo,
3098 		    commit_id);
3099 		if (error)
3100 			goto done;
3101 	}
3102 
3103 	memset(&upa, 0, sizeof(upa));
3104 	error = got_worktree_checkout_files(worktree, &paths, repo,
3105 	    update_progress, &upa, check_cancelled, NULL);
3106 	if (error != NULL)
3107 		goto done;
3108 
3109 	if (upa.did_something)
3110 		printf("Updated to commit %s\n", commit_id_str);
3111 	else
3112 		printf("Already up-to-date\n");
3113 	print_update_progress_stats(&upa);
3114 done:
3115 	free(worktree_path);
3116 	TAILQ_FOREACH(pe, &paths, entry)
3117 		free((char *)pe->path);
3118 	got_pathlist_free(&paths);
3119 	free(commit_id);
3120 	free(commit_id_str);
3121 	return error;
3122 }
3123 
3124 static const struct got_error *
3125 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3126     const char *path, int diff_context, int ignore_whitespace,
3127     int force_text_diff, struct got_repository *repo)
3128 {
3129 	const struct got_error *err = NULL;
3130 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3131 
3132 	if (blob_id1) {
3133 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192);
3134 		if (err)
3135 			goto done;
3136 	}
3137 
3138 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192);
3139 	if (err)
3140 		goto done;
3141 
3142 	while (path[0] == '/')
3143 		path++;
3144 	err = got_diff_blob(NULL, NULL, blob1, blob2, path, path,
3145 	    diff_context, ignore_whitespace, force_text_diff, stdout);
3146 done:
3147 	if (blob1)
3148 		got_object_blob_close(blob1);
3149 	got_object_blob_close(blob2);
3150 	return err;
3151 }
3152 
3153 static const struct got_error *
3154 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3155     const char *path, int diff_context, int ignore_whitespace,
3156     int force_text_diff, struct got_repository *repo)
3157 {
3158 	const struct got_error *err = NULL;
3159 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3160 	struct got_diff_blob_output_unidiff_arg arg;
3161 
3162 	if (tree_id1) {
3163 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3164 		if (err)
3165 			goto done;
3166 	}
3167 
3168 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3169 	if (err)
3170 		goto done;
3171 
3172 	arg.diff_context = diff_context;
3173 	arg.ignore_whitespace = ignore_whitespace;
3174 	arg.force_text_diff = force_text_diff;
3175 	arg.outfile = stdout;
3176 	arg.line_offsets = NULL;
3177 	arg.nlines = 0;
3178 	while (path[0] == '/')
3179 		path++;
3180 	err = got_diff_tree(tree1, tree2, path, path, repo,
3181 	    got_diff_blob_output_unidiff, &arg, 1);
3182 done:
3183 	if (tree1)
3184 		got_object_tree_close(tree1);
3185 	if (tree2)
3186 		got_object_tree_close(tree2);
3187 	return err;
3188 }
3189 
3190 static const struct got_error *
3191 get_changed_paths(struct got_pathlist_head *paths,
3192     struct got_commit_object *commit, struct got_repository *repo)
3193 {
3194 	const struct got_error *err = NULL;
3195 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3196 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3197 	struct got_object_qid *qid;
3198 
3199 	qid = SIMPLEQ_FIRST(got_object_commit_get_parent_ids(commit));
3200 	if (qid != NULL) {
3201 		struct got_commit_object *pcommit;
3202 		err = got_object_open_as_commit(&pcommit, repo,
3203 		    qid->id);
3204 		if (err)
3205 			return err;
3206 
3207 		tree_id1 = got_object_commit_get_tree_id(pcommit);
3208 		got_object_commit_close(pcommit);
3209 
3210 	}
3211 
3212 	if (tree_id1) {
3213 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3214 		if (err)
3215 			goto done;
3216 	}
3217 
3218 	tree_id2 = got_object_commit_get_tree_id(commit);
3219 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3220 	if (err)
3221 		goto done;
3222 
3223 	err = got_diff_tree(tree1, tree2, "", "", repo,
3224 	    got_diff_tree_collect_changed_paths, paths, 0);
3225 done:
3226 	if (tree1)
3227 		got_object_tree_close(tree1);
3228 	if (tree2)
3229 		got_object_tree_close(tree2);
3230 	return err;
3231 }
3232 
3233 static const struct got_error *
3234 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3235     const char *path, int diff_context, struct got_repository *repo)
3236 {
3237 	const struct got_error *err = NULL;
3238 	struct got_commit_object *pcommit = NULL;
3239 	char *id_str1 = NULL, *id_str2 = NULL;
3240 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3241 	struct got_object_qid *qid;
3242 
3243 	qid = SIMPLEQ_FIRST(got_object_commit_get_parent_ids(commit));
3244 	if (qid != NULL) {
3245 		err = got_object_open_as_commit(&pcommit, repo,
3246 		    qid->id);
3247 		if (err)
3248 			return err;
3249 	}
3250 
3251 	if (path && path[0] != '\0') {
3252 		int obj_type;
3253 		err = got_object_id_by_path(&obj_id2, repo, id, path);
3254 		if (err)
3255 			goto done;
3256 		err = got_object_id_str(&id_str2, obj_id2);
3257 		if (err) {
3258 			free(obj_id2);
3259 			goto done;
3260 		}
3261 		if (pcommit) {
3262 			err = got_object_id_by_path(&obj_id1, repo,
3263 			    qid->id, path);
3264 			if (err) {
3265 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3266 					free(obj_id2);
3267 					goto done;
3268 				}
3269 			} else {
3270 				err = got_object_id_str(&id_str1, obj_id1);
3271 				if (err) {
3272 					free(obj_id2);
3273 					goto done;
3274 				}
3275 			}
3276 		}
3277 		err = got_object_get_type(&obj_type, repo, obj_id2);
3278 		if (err) {
3279 			free(obj_id2);
3280 			goto done;
3281 		}
3282 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3283 		switch (obj_type) {
3284 		case GOT_OBJ_TYPE_BLOB:
3285 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3286 			    0, 0, repo);
3287 			break;
3288 		case GOT_OBJ_TYPE_TREE:
3289 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3290 			    0, 0, repo);
3291 			break;
3292 		default:
3293 			err = got_error(GOT_ERR_OBJ_TYPE);
3294 			break;
3295 		}
3296 		free(obj_id1);
3297 		free(obj_id2);
3298 	} else {
3299 		obj_id2 = got_object_commit_get_tree_id(commit);
3300 		err = got_object_id_str(&id_str2, obj_id2);
3301 		if (err)
3302 			goto done;
3303 		if (pcommit) {
3304 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3305 			err = got_object_id_str(&id_str1, obj_id1);
3306 			if (err)
3307 				goto done;
3308 		}
3309 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null",
3310 		    id_str2);
3311 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3312 		    repo);
3313 	}
3314 done:
3315 	free(id_str1);
3316 	free(id_str2);
3317 	if (pcommit)
3318 		got_object_commit_close(pcommit);
3319 	return err;
3320 }
3321 
3322 static char *
3323 get_datestr(time_t *time, char *datebuf)
3324 {
3325 	struct tm mytm, *tm;
3326 	char *p, *s;
3327 
3328 	tm = gmtime_r(time, &mytm);
3329 	if (tm == NULL)
3330 		return NULL;
3331 	s = asctime_r(tm, datebuf);
3332 	if (s == NULL)
3333 		return NULL;
3334 	p = strchr(s, '\n');
3335 	if (p)
3336 		*p = '\0';
3337 	return s;
3338 }
3339 
3340 static const struct got_error *
3341 match_logmsg(int *have_match, struct got_object_id *id,
3342     struct got_commit_object *commit, regex_t *regex)
3343 {
3344 	const struct got_error *err = NULL;
3345 	regmatch_t regmatch;
3346 	char *id_str = NULL, *logmsg = NULL;
3347 
3348 	*have_match = 0;
3349 
3350 	err = got_object_id_str(&id_str, id);
3351 	if (err)
3352 		return err;
3353 
3354 	err = got_object_commit_get_logmsg(&logmsg, commit);
3355 	if (err)
3356 		goto done;
3357 
3358 	if (regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3359 		*have_match = 1;
3360 done:
3361 	free(id_str);
3362 	free(logmsg);
3363 	return err;
3364 }
3365 
3366 static void
3367 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3368     regex_t *regex)
3369 {
3370 	regmatch_t regmatch;
3371 	struct got_pathlist_entry *pe;
3372 
3373 	*have_match = 0;
3374 
3375 	TAILQ_FOREACH(pe, changed_paths, entry) {
3376 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3377 			*have_match = 1;
3378 			break;
3379 		}
3380 	}
3381 }
3382 
3383 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3384 
3385 static const struct got_error *
3386 print_commit(struct got_commit_object *commit, struct got_object_id *id,
3387     struct got_repository *repo, const char *path,
3388     struct got_pathlist_head *changed_paths, int show_patch,
3389     int diff_context, struct got_reflist_head *refs)
3390 {
3391 	const struct got_error *err = NULL;
3392 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
3393 	char datebuf[26];
3394 	time_t committer_time;
3395 	const char *author, *committer;
3396 	char *refs_str = NULL;
3397 	struct got_reflist_entry *re;
3398 
3399 	SIMPLEQ_FOREACH(re, refs, entry) {
3400 		char *s;
3401 		const char *name;
3402 		struct got_tag_object *tag = NULL;
3403 		struct got_object_id *ref_id;
3404 		int cmp;
3405 
3406 		name = got_ref_get_name(re->ref);
3407 		if (strcmp(name, GOT_REF_HEAD) == 0)
3408 			continue;
3409 		if (strncmp(name, "refs/", 5) == 0)
3410 			name += 5;
3411 		if (strncmp(name, "got/", 4) == 0)
3412 			continue;
3413 		if (strncmp(name, "heads/", 6) == 0)
3414 			name += 6;
3415 		if (strncmp(name, "remotes/", 8) == 0) {
3416 			name += 8;
3417 			s = strstr(name, "/" GOT_REF_HEAD);
3418 			if (s != NULL && s[strlen(s)] == '\0')
3419 				continue;
3420 		}
3421 		err = got_ref_resolve(&ref_id, repo, re->ref);
3422 		if (err)
3423 			return err;
3424 		if (strncmp(name, "tags/", 5) == 0) {
3425 			err = got_object_open_as_tag(&tag, repo, ref_id);
3426 			if (err) {
3427 				if (err->code != GOT_ERR_OBJ_TYPE) {
3428 					free(ref_id);
3429 					return err;
3430 				}
3431 				/* Ref points at something other than a tag. */
3432 				err = NULL;
3433 				tag = NULL;
3434 			}
3435 		}
3436 		cmp = got_object_id_cmp(tag ?
3437 		    got_object_tag_get_object_id(tag) : ref_id, id);
3438 		free(ref_id);
3439 		if (tag)
3440 			got_object_tag_close(tag);
3441 		if (cmp != 0)
3442 			continue;
3443 		s = refs_str;
3444 		if (asprintf(&refs_str, "%s%s%s", s ? s : "", s ? ", " : "",
3445 		    name) == -1) {
3446 			err = got_error_from_errno("asprintf");
3447 			free(s);
3448 			return err;
3449 		}
3450 		free(s);
3451 	}
3452 	err = got_object_id_str(&id_str, id);
3453 	if (err)
3454 		return err;
3455 
3456 	printf(GOT_COMMIT_SEP_STR);
3457 	printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
3458 	    refs_str ? refs_str : "", refs_str ? ")" : "");
3459 	free(id_str);
3460 	id_str = NULL;
3461 	free(refs_str);
3462 	refs_str = NULL;
3463 	printf("from: %s\n", got_object_commit_get_author(commit));
3464 	committer_time = got_object_commit_get_committer_time(commit);
3465 	datestr = get_datestr(&committer_time, datebuf);
3466 	if (datestr)
3467 		printf("date: %s UTC\n", datestr);
3468 	author = got_object_commit_get_author(commit);
3469 	committer = got_object_commit_get_committer(commit);
3470 	if (strcmp(author, committer) != 0)
3471 		printf("via: %s\n", committer);
3472 	if (got_object_commit_get_nparents(commit) > 1) {
3473 		const struct got_object_id_queue *parent_ids;
3474 		struct got_object_qid *qid;
3475 		int n = 1;
3476 		parent_ids = got_object_commit_get_parent_ids(commit);
3477 		SIMPLEQ_FOREACH(qid, parent_ids, entry) {
3478 			err = got_object_id_str(&id_str, qid->id);
3479 			if (err)
3480 				return err;
3481 			printf("parent %d: %s\n", n++, id_str);
3482 			free(id_str);
3483 		}
3484 	}
3485 
3486 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3487 	if (err)
3488 		return err;
3489 
3490 	logmsg = logmsg0;
3491 	do {
3492 		line = strsep(&logmsg, "\n");
3493 		if (line)
3494 			printf(" %s\n", line);
3495 	} while (line);
3496 	free(logmsg0);
3497 
3498 	if (changed_paths) {
3499 		struct got_pathlist_entry *pe;
3500 		TAILQ_FOREACH(pe, changed_paths, entry) {
3501 			struct got_diff_changed_path *cp = pe->data;
3502 			printf(" %c  %s\n", cp->status, pe->path);
3503 		}
3504 		printf("\n");
3505 	}
3506 	if (show_patch) {
3507 		err = print_patch(commit, id, path, diff_context, repo);
3508 		if (err == 0)
3509 			printf("\n");
3510 	}
3511 
3512 	if (fflush(stdout) != 0 && err == NULL)
3513 		err = got_error_from_errno("fflush");
3514 	return err;
3515 }
3516 
3517 static const struct got_error *
3518 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
3519     struct got_repository *repo, const char *path, int show_changed_paths,
3520     int show_patch, const char *search_pattern, int diff_context, int limit,
3521     int log_branches, int reverse_display_order, struct got_reflist_head *refs)
3522 {
3523 	const struct got_error *err;
3524 	struct got_commit_graph *graph;
3525 	regex_t regex;
3526 	int have_match;
3527 	struct got_object_id_queue reversed_commits;
3528 	struct got_object_qid *qid;
3529 	struct got_commit_object *commit;
3530 	struct got_pathlist_head changed_paths;
3531 	struct got_pathlist_entry *pe;
3532 
3533 	SIMPLEQ_INIT(&reversed_commits);
3534 	TAILQ_INIT(&changed_paths);
3535 
3536 	if (search_pattern && regcomp(&regex, search_pattern,
3537 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
3538 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
3539 
3540 	err = got_commit_graph_open(&graph, path, !log_branches);
3541 	if (err)
3542 		return err;
3543 	err = got_commit_graph_iter_start(graph, root_id, repo,
3544 	    check_cancelled, NULL);
3545 	if (err)
3546 		goto done;
3547 	for (;;) {
3548 		struct got_object_id *id;
3549 
3550 		if (sigint_received || sigpipe_received)
3551 			break;
3552 
3553 		err = got_commit_graph_iter_next(&id, graph, repo,
3554 		    check_cancelled, NULL);
3555 		if (err) {
3556 			if (err->code == GOT_ERR_ITER_COMPLETED)
3557 				err = NULL;
3558 			break;
3559 		}
3560 		if (id == NULL)
3561 			break;
3562 
3563 		err = got_object_open_as_commit(&commit, repo, id);
3564 		if (err)
3565 			break;
3566 
3567 		if (show_changed_paths && !reverse_display_order) {
3568 			err = get_changed_paths(&changed_paths, commit, repo);
3569 			if (err)
3570 				break;
3571 		}
3572 
3573 		if (search_pattern) {
3574 			err = match_logmsg(&have_match, id, commit, &regex);
3575 			if (err) {
3576 				got_object_commit_close(commit);
3577 				break;
3578 			}
3579 			if (have_match == 0 && show_changed_paths)
3580 				match_changed_paths(&have_match,
3581 				    &changed_paths, &regex);
3582 			if (have_match == 0) {
3583 				got_object_commit_close(commit);
3584 				TAILQ_FOREACH(pe, &changed_paths, entry) {
3585 					free((char *)pe->path);
3586 					free(pe->data);
3587 				}
3588 				got_pathlist_free(&changed_paths);
3589 				continue;
3590 			}
3591 		}
3592 
3593 		if (reverse_display_order) {
3594 			err = got_object_qid_alloc(&qid, id);
3595 			if (err)
3596 				break;
3597 			SIMPLEQ_INSERT_HEAD(&reversed_commits, qid, entry);
3598 			got_object_commit_close(commit);
3599 		} else {
3600 			err = print_commit(commit, id, repo, path,
3601 			    show_changed_paths ? &changed_paths : NULL,
3602 			    show_patch, diff_context, refs);
3603 			got_object_commit_close(commit);
3604 			if (err)
3605 				break;
3606 		}
3607 		if ((limit && --limit == 0) ||
3608 		    (end_id && got_object_id_cmp(id, end_id) == 0))
3609 			break;
3610 
3611 		TAILQ_FOREACH(pe, &changed_paths, entry) {
3612 			free((char *)pe->path);
3613 			free(pe->data);
3614 		}
3615 		got_pathlist_free(&changed_paths);
3616 	}
3617 	if (reverse_display_order) {
3618 		SIMPLEQ_FOREACH(qid, &reversed_commits, entry) {
3619 			err = got_object_open_as_commit(&commit, repo, qid->id);
3620 			if (err)
3621 				break;
3622 			if (show_changed_paths) {
3623 				err = get_changed_paths(&changed_paths,
3624 				    commit, repo);
3625 				if (err)
3626 					break;
3627 			}
3628 			err = print_commit(commit, qid->id, repo, path,
3629 			    show_changed_paths ? &changed_paths : NULL,
3630 			    show_patch, diff_context, refs);
3631 			got_object_commit_close(commit);
3632 			if (err)
3633 				break;
3634 			TAILQ_FOREACH(pe, &changed_paths, entry) {
3635 				free((char *)pe->path);
3636 				free(pe->data);
3637 			}
3638 			got_pathlist_free(&changed_paths);
3639 		}
3640 	}
3641 done:
3642 	while (!SIMPLEQ_EMPTY(&reversed_commits)) {
3643 		qid = SIMPLEQ_FIRST(&reversed_commits);
3644 		SIMPLEQ_REMOVE_HEAD(&reversed_commits, entry);
3645 		got_object_qid_free(qid);
3646 	}
3647 	TAILQ_FOREACH(pe, &changed_paths, entry) {
3648 		free((char *)pe->path);
3649 		free(pe->data);
3650 	}
3651 	got_pathlist_free(&changed_paths);
3652 	if (search_pattern)
3653 		regfree(&regex);
3654 	got_commit_graph_close(graph);
3655 	return err;
3656 }
3657 
3658 __dead static void
3659 usage_log(void)
3660 {
3661 	fprintf(stderr, "usage: %s log [-b] [-c commit] [-C number] [ -l N ] "
3662 	    "[-p] [-P] [-x commit] [-s search-pattern] [-r repository-path] "
3663 	    "[-R] [path]\n", getprogname());
3664 	exit(1);
3665 }
3666 
3667 static int
3668 get_default_log_limit(void)
3669 {
3670 	const char *got_default_log_limit;
3671 	long long n;
3672 	const char *errstr;
3673 
3674 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
3675 	if (got_default_log_limit == NULL)
3676 		return 0;
3677 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
3678 	if (errstr != NULL)
3679 		return 0;
3680 	return n;
3681 }
3682 
3683 static const struct got_error *
3684 cmd_log(int argc, char *argv[])
3685 {
3686 	const struct got_error *error;
3687 	struct got_repository *repo = NULL;
3688 	struct got_worktree *worktree = NULL;
3689 	struct got_object_id *start_id = NULL, *end_id = NULL;
3690 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
3691 	const char *start_commit = NULL, *end_commit = NULL;
3692 	const char *search_pattern = NULL;
3693 	int diff_context = -1, ch;
3694 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
3695 	int reverse_display_order = 0;
3696 	const char *errstr;
3697 	struct got_reflist_head refs;
3698 
3699 	SIMPLEQ_INIT(&refs);
3700 
3701 #ifndef PROFILE
3702 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
3703 	    NULL)
3704 	    == -1)
3705 		err(1, "pledge");
3706 #endif
3707 
3708 	limit = get_default_log_limit();
3709 
3710 	while ((ch = getopt(argc, argv, "bpPc:C:l:r:Rs:x:")) != -1) {
3711 		switch (ch) {
3712 		case 'p':
3713 			show_patch = 1;
3714 			break;
3715 		case 'P':
3716 			show_changed_paths = 1;
3717 			break;
3718 		case 'c':
3719 			start_commit = optarg;
3720 			break;
3721 		case 'C':
3722 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
3723 			    &errstr);
3724 			if (errstr != NULL)
3725 				err(1, "-C option %s", errstr);
3726 			break;
3727 		case 'l':
3728 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
3729 			if (errstr != NULL)
3730 				err(1, "-l option %s", errstr);
3731 			break;
3732 		case 'b':
3733 			log_branches = 1;
3734 			break;
3735 		case 'r':
3736 			repo_path = realpath(optarg, NULL);
3737 			if (repo_path == NULL)
3738 				return got_error_from_errno2("realpath",
3739 				    optarg);
3740 			got_path_strip_trailing_slashes(repo_path);
3741 			break;
3742 		case 'R':
3743 			reverse_display_order = 1;
3744 			break;
3745 		case 's':
3746 			search_pattern = optarg;
3747 			break;
3748 		case 'x':
3749 			end_commit = optarg;
3750 			break;
3751 		default:
3752 			usage_log();
3753 			/* NOTREACHED */
3754 		}
3755 	}
3756 
3757 	argc -= optind;
3758 	argv += optind;
3759 
3760 	if (diff_context == -1)
3761 		diff_context = 3;
3762 	else if (!show_patch)
3763 		errx(1, "-C requires -p");
3764 
3765 	cwd = getcwd(NULL, 0);
3766 	if (cwd == NULL) {
3767 		error = got_error_from_errno("getcwd");
3768 		goto done;
3769 	}
3770 
3771 	if (repo_path == NULL) {
3772 		error = got_worktree_open(&worktree, cwd);
3773 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
3774 			goto done;
3775 		error = NULL;
3776 	}
3777 
3778 	if (argc == 1) {
3779 		if (worktree) {
3780 			error = got_worktree_resolve_path(&path, worktree,
3781 			    argv[0]);
3782 			if (error)
3783 				goto done;
3784 		} else {
3785 			path = strdup(argv[0]);
3786 			if (path == NULL) {
3787 				error = got_error_from_errno("strdup");
3788 				goto done;
3789 			}
3790 		}
3791 	} else if (argc != 0)
3792 		usage_log();
3793 
3794 	if (repo_path == NULL) {
3795 		repo_path = worktree ?
3796 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
3797 	}
3798 	if (repo_path == NULL) {
3799 		error = got_error_from_errno("strdup");
3800 		goto done;
3801 	}
3802 
3803 	error = got_repo_open(&repo, repo_path, NULL);
3804 	if (error != NULL)
3805 		goto done;
3806 
3807 	error = apply_unveil(got_repo_get_path(repo), 1,
3808 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
3809 	if (error)
3810 		goto done;
3811 
3812 	if (start_commit == NULL) {
3813 		struct got_reference *head_ref;
3814 		struct got_commit_object *commit = NULL;
3815 		error = got_ref_open(&head_ref, repo,
3816 		    worktree ? got_worktree_get_head_ref_name(worktree)
3817 		    : GOT_REF_HEAD, 0);
3818 		if (error != NULL)
3819 			goto done;
3820 		error = got_ref_resolve(&start_id, repo, head_ref);
3821 		got_ref_close(head_ref);
3822 		if (error != NULL)
3823 			goto done;
3824 		error = got_object_open_as_commit(&commit, repo,
3825 		    start_id);
3826 		if (error != NULL)
3827 			goto done;
3828 		got_object_commit_close(commit);
3829 	} else {
3830 		error = got_repo_match_object_id(&start_id, NULL,
3831 		    start_commit, GOT_OBJ_TYPE_COMMIT, 1, repo);
3832 		if (error != NULL)
3833 			goto done;
3834 	}
3835 	if (end_commit != NULL) {
3836 		error = got_repo_match_object_id(&end_id, NULL,
3837 		    end_commit, GOT_OBJ_TYPE_COMMIT, 1, repo);
3838 		if (error != NULL)
3839 			goto done;
3840 	}
3841 
3842 	if (worktree) {
3843 		/*
3844 		 * If a path was specified on the command line it was resolved
3845 		 * to a path in the work tree above. Prepend the work tree's
3846 		 * path prefix to obtain the corresponding in-repository path.
3847 		 */
3848 		if (path) {
3849 			const char *prefix;
3850 			prefix = got_worktree_get_path_prefix(worktree);
3851 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
3852 			    (path[0] != '\0') ? "/" : "", path) == -1) {
3853 				error = got_error_from_errno("asprintf");
3854 				goto done;
3855 			}
3856 		}
3857 	} else
3858 		error = got_repo_map_path(&in_repo_path, repo,
3859 		    path ? path : "");
3860 	if (error != NULL)
3861 		goto done;
3862 	if (in_repo_path) {
3863 		free(path);
3864 		path = in_repo_path;
3865 	}
3866 
3867 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
3868 	if (error)
3869 		goto done;
3870 
3871 	error = print_commits(start_id, end_id, repo, path ? path : "",
3872 	    show_changed_paths, show_patch, search_pattern, diff_context,
3873 	    limit, log_branches, reverse_display_order, &refs);
3874 done:
3875 	free(path);
3876 	free(repo_path);
3877 	free(cwd);
3878 	if (worktree)
3879 		got_worktree_close(worktree);
3880 	if (repo) {
3881 		const struct got_error *repo_error;
3882 		repo_error = got_repo_close(repo);
3883 		if (error == NULL)
3884 			error = repo_error;
3885 	}
3886 	got_ref_list_free(&refs);
3887 	return error;
3888 }
3889 
3890 __dead static void
3891 usage_diff(void)
3892 {
3893 	fprintf(stderr, "usage: %s diff [-a] [-C number] [-r repository-path] "
3894 	    "[-s] [-w] [object1 object2 | path]\n", getprogname());
3895 	exit(1);
3896 }
3897 
3898 struct print_diff_arg {
3899 	struct got_repository *repo;
3900 	struct got_worktree *worktree;
3901 	int diff_context;
3902 	const char *id_str;
3903 	int header_shown;
3904 	int diff_staged;
3905 	int ignore_whitespace;
3906 	int force_text_diff;
3907 };
3908 
3909 /*
3910  * Create a file which contains the target path of a symlink so we can feed
3911  * it as content to the diff engine.
3912  */
3913 static const struct got_error *
3914 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
3915     const char *abspath)
3916 {
3917 	const struct got_error *err = NULL;
3918 	char target_path[PATH_MAX];
3919 	ssize_t target_len, outlen;
3920 
3921 	*fd = -1;
3922 
3923 	if (dirfd != -1) {
3924 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
3925 		if (target_len == -1)
3926 			return got_error_from_errno2("readlinkat", abspath);
3927 	} else {
3928 		target_len = readlink(abspath, target_path, PATH_MAX);
3929 		if (target_len == -1)
3930 			return got_error_from_errno2("readlink", abspath);
3931 	}
3932 
3933 	*fd = got_opentempfd();
3934 	if (*fd == -1)
3935 		return got_error_from_errno("got_opentempfd");
3936 
3937 	outlen = write(*fd, target_path, target_len);
3938 	if (outlen == -1) {
3939 		err = got_error_from_errno("got_opentempfd");
3940 		goto done;
3941 	}
3942 
3943 	if (lseek(*fd, 0, SEEK_SET) == -1) {
3944 		err = got_error_from_errno2("lseek", abspath);
3945 		goto done;
3946 	}
3947 done:
3948 	if (err) {
3949 		close(*fd);
3950 		*fd = -1;
3951 	}
3952 	return err;
3953 }
3954 
3955 static const struct got_error *
3956 print_diff(void *arg, unsigned char status, unsigned char staged_status,
3957     const char *path, struct got_object_id *blob_id,
3958     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
3959     int dirfd, const char *de_name)
3960 {
3961 	struct print_diff_arg *a = arg;
3962 	const struct got_error *err = NULL;
3963 	struct got_blob_object *blob1 = NULL;
3964 	int fd = -1;
3965 	FILE *f2 = NULL;
3966 	char *abspath = NULL, *label1 = NULL;
3967 	struct stat sb;
3968 
3969 	if (a->diff_staged) {
3970 		if (staged_status != GOT_STATUS_MODIFY &&
3971 		    staged_status != GOT_STATUS_ADD &&
3972 		    staged_status != GOT_STATUS_DELETE)
3973 			return NULL;
3974 	} else {
3975 		if (staged_status == GOT_STATUS_DELETE)
3976 			return NULL;
3977 		if (status == GOT_STATUS_NONEXISTENT)
3978 			return got_error_set_errno(ENOENT, path);
3979 		if (status != GOT_STATUS_MODIFY &&
3980 		    status != GOT_STATUS_ADD &&
3981 		    status != GOT_STATUS_DELETE &&
3982 		    status != GOT_STATUS_CONFLICT)
3983 			return NULL;
3984 	}
3985 
3986 	if (!a->header_shown) {
3987 		printf("diff %s %s%s\n", a->id_str,
3988 		    got_worktree_get_root_path(a->worktree),
3989 		    a->diff_staged ? " (staged changes)" : "");
3990 		a->header_shown = 1;
3991 	}
3992 
3993 	if (a->diff_staged) {
3994 		const char *label1 = NULL, *label2 = NULL;
3995 		switch (staged_status) {
3996 		case GOT_STATUS_MODIFY:
3997 			label1 = path;
3998 			label2 = path;
3999 			break;
4000 		case GOT_STATUS_ADD:
4001 			label2 = path;
4002 			break;
4003 		case GOT_STATUS_DELETE:
4004 			label1 = path;
4005 			break;
4006 		default:
4007 			return got_error(GOT_ERR_FILE_STATUS);
4008 		}
4009 		return got_diff_objects_as_blobs(NULL, NULL, blob_id,
4010 		    staged_blob_id, label1, label2, a->diff_context,
4011 		    a->ignore_whitespace, a->force_text_diff, a->repo, stdout);
4012 	}
4013 
4014 	if (staged_status == GOT_STATUS_ADD ||
4015 	    staged_status == GOT_STATUS_MODIFY) {
4016 		char *id_str;
4017 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4018 		    8192);
4019 		if (err)
4020 			goto done;
4021 		err = got_object_id_str(&id_str, staged_blob_id);
4022 		if (err)
4023 			goto done;
4024 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4025 			err = got_error_from_errno("asprintf");
4026 			free(id_str);
4027 			goto done;
4028 		}
4029 		free(id_str);
4030 	} else if (status != GOT_STATUS_ADD) {
4031 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192);
4032 		if (err)
4033 			goto done;
4034 	}
4035 
4036 	if (status != GOT_STATUS_DELETE) {
4037 		if (asprintf(&abspath, "%s/%s",
4038 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4039 			err = got_error_from_errno("asprintf");
4040 			goto done;
4041 		}
4042 
4043 		if (dirfd != -1) {
4044 			fd = openat(dirfd, de_name, O_RDONLY | O_NOFOLLOW);
4045 			if (fd == -1) {
4046 				if (errno != ELOOP) {
4047 					err = got_error_from_errno2("openat",
4048 					    abspath);
4049 					goto done;
4050 				}
4051 				err = get_symlink_target_file(&fd, dirfd,
4052 				    de_name, abspath);
4053 				if (err)
4054 					goto done;
4055 			}
4056 		} else {
4057 			fd = open(abspath, O_RDONLY | O_NOFOLLOW);
4058 			if (fd == -1) {
4059 				if (errno != ELOOP) {
4060 					err = got_error_from_errno2("open",
4061 					    abspath);
4062 					goto done;
4063 				}
4064 				err = get_symlink_target_file(&fd, dirfd,
4065 				    de_name, abspath);
4066 				if (err)
4067 					goto done;
4068 			}
4069 		}
4070 		if (fstat(fd, &sb) == -1) {
4071 			err = got_error_from_errno2("fstat", abspath);
4072 			goto done;
4073 		}
4074 		f2 = fdopen(fd, "r");
4075 		if (f2 == NULL) {
4076 			err = got_error_from_errno2("fdopen", abspath);
4077 			goto done;
4078 		}
4079 		fd = -1;
4080 	} else
4081 		sb.st_size = 0;
4082 
4083 	err = got_diff_blob_file(blob1, label1, f2, sb.st_size, path,
4084 	    a->diff_context, a->ignore_whitespace, a->force_text_diff, stdout);
4085 done:
4086 	if (blob1)
4087 		got_object_blob_close(blob1);
4088 	if (f2 && fclose(f2) == EOF && err == NULL)
4089 		err = got_error_from_errno("fclose");
4090 	if (fd != -1 && close(fd) == -1 && err == NULL)
4091 		err = got_error_from_errno("close");
4092 	free(abspath);
4093 	return err;
4094 }
4095 
4096 static const struct got_error *
4097 cmd_diff(int argc, char *argv[])
4098 {
4099 	const struct got_error *error;
4100 	struct got_repository *repo = NULL;
4101 	struct got_worktree *worktree = NULL;
4102 	char *cwd = NULL, *repo_path = NULL;
4103 	struct got_object_id *id1 = NULL, *id2 = NULL;
4104 	const char *id_str1 = NULL, *id_str2 = NULL;
4105 	char *label1 = NULL, *label2 = NULL;
4106 	int type1, type2;
4107 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch;
4108 	int force_text_diff = 0;
4109 	const char *errstr;
4110 	char *path = NULL;
4111 
4112 #ifndef PROFILE
4113 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4114 	    NULL) == -1)
4115 		err(1, "pledge");
4116 #endif
4117 
4118 	while ((ch = getopt(argc, argv, "aC:r:sw")) != -1) {
4119 		switch (ch) {
4120 		case 'a':
4121 			force_text_diff = 1;
4122 			break;
4123 		case 'C':
4124 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4125 			    &errstr);
4126 			if (errstr != NULL)
4127 				err(1, "-C option %s", errstr);
4128 			break;
4129 		case 'r':
4130 			repo_path = realpath(optarg, NULL);
4131 			if (repo_path == NULL)
4132 				return got_error_from_errno2("realpath",
4133 				    optarg);
4134 			got_path_strip_trailing_slashes(repo_path);
4135 			break;
4136 		case 's':
4137 			diff_staged = 1;
4138 			break;
4139 		case 'w':
4140 			ignore_whitespace = 1;
4141 			break;
4142 		default:
4143 			usage_diff();
4144 			/* NOTREACHED */
4145 		}
4146 	}
4147 
4148 	argc -= optind;
4149 	argv += optind;
4150 
4151 	cwd = getcwd(NULL, 0);
4152 	if (cwd == NULL) {
4153 		error = got_error_from_errno("getcwd");
4154 		goto done;
4155 	}
4156 	if (argc <= 1) {
4157 		if (repo_path)
4158 			errx(1,
4159 			    "-r option can't be used when diffing a work tree");
4160 		error = got_worktree_open(&worktree, cwd);
4161 		if (error) {
4162 			if (error->code == GOT_ERR_NOT_WORKTREE)
4163 				error = wrap_not_worktree_error(error, "diff",
4164 				    cwd);
4165 			goto done;
4166 		}
4167 		repo_path = strdup(got_worktree_get_repo_path(worktree));
4168 		if (repo_path == NULL) {
4169 			error = got_error_from_errno("strdup");
4170 			goto done;
4171 		}
4172 		if (argc == 1) {
4173 			error = got_worktree_resolve_path(&path, worktree,
4174 			    argv[0]);
4175 			if (error)
4176 				goto done;
4177 		} else {
4178 			path = strdup("");
4179 			if (path == NULL) {
4180 				error = got_error_from_errno("strdup");
4181 				goto done;
4182 			}
4183 		}
4184 	} else if (argc == 2) {
4185 		if (diff_staged)
4186 			errx(1, "-s option can't be used when diffing "
4187 			    "objects in repository");
4188 		id_str1 = argv[0];
4189 		id_str2 = argv[1];
4190 		if (repo_path == NULL) {
4191 			error = got_worktree_open(&worktree, cwd);
4192 			if (error && error->code != GOT_ERR_NOT_WORKTREE)
4193 				goto done;
4194 			if (worktree) {
4195 				repo_path = strdup(
4196 				    got_worktree_get_repo_path(worktree));
4197 				if (repo_path == NULL) {
4198 					error = got_error_from_errno("strdup");
4199 					goto done;
4200 				}
4201 			} else {
4202 				repo_path = strdup(cwd);
4203 				if (repo_path == NULL) {
4204 					error = got_error_from_errno("strdup");
4205 					goto done;
4206 				}
4207 			}
4208 		}
4209 	} else
4210 		usage_diff();
4211 
4212 	error = got_repo_open(&repo, repo_path, NULL);
4213 	free(repo_path);
4214 	if (error != NULL)
4215 		goto done;
4216 
4217 	error = apply_unveil(got_repo_get_path(repo), 1,
4218 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4219 	if (error)
4220 		goto done;
4221 
4222 	if (argc <= 1) {
4223 		struct print_diff_arg arg;
4224 		struct got_pathlist_head paths;
4225 		char *id_str;
4226 
4227 		TAILQ_INIT(&paths);
4228 
4229 		error = got_object_id_str(&id_str,
4230 		    got_worktree_get_base_commit_id(worktree));
4231 		if (error)
4232 			goto done;
4233 		arg.repo = repo;
4234 		arg.worktree = worktree;
4235 		arg.diff_context = diff_context;
4236 		arg.id_str = id_str;
4237 		arg.header_shown = 0;
4238 		arg.diff_staged = diff_staged;
4239 		arg.ignore_whitespace = ignore_whitespace;
4240 		arg.force_text_diff = force_text_diff;
4241 
4242 		error = got_pathlist_append(&paths, path, NULL);
4243 		if (error)
4244 			goto done;
4245 
4246 		error = got_worktree_status(worktree, &paths, repo, print_diff,
4247 		    &arg, check_cancelled, NULL);
4248 		free(id_str);
4249 		got_pathlist_free(&paths);
4250 		goto done;
4251 	}
4252 
4253 	error = got_repo_match_object_id(&id1, &label1, id_str1,
4254 	    GOT_OBJ_TYPE_ANY, 1, repo);
4255 	if (error)
4256 		goto done;
4257 
4258 	error = got_repo_match_object_id(&id2, &label2, id_str2,
4259 	    GOT_OBJ_TYPE_ANY, 1, repo);
4260 	if (error)
4261 		goto done;
4262 
4263 	error = got_object_get_type(&type1, repo, id1);
4264 	if (error)
4265 		goto done;
4266 
4267 	error = got_object_get_type(&type2, repo, id2);
4268 	if (error)
4269 		goto done;
4270 
4271 	if (type1 != type2) {
4272 		error = got_error(GOT_ERR_OBJ_TYPE);
4273 		goto done;
4274 	}
4275 
4276 	switch (type1) {
4277 	case GOT_OBJ_TYPE_BLOB:
4278 		error = got_diff_objects_as_blobs(NULL, NULL, id1, id2,
4279 		    NULL, NULL, diff_context, ignore_whitespace,
4280 		    force_text_diff, repo, stdout);
4281 		break;
4282 	case GOT_OBJ_TYPE_TREE:
4283 		error = got_diff_objects_as_trees(NULL, NULL, id1, id2,
4284 		    "", "", diff_context, ignore_whitespace, force_text_diff,
4285 		    repo, stdout);
4286 		break;
4287 	case GOT_OBJ_TYPE_COMMIT:
4288 		printf("diff %s %s\n", label1, label2);
4289 		error = got_diff_objects_as_commits(NULL, NULL, id1, id2,
4290 		    diff_context, ignore_whitespace, force_text_diff, repo,
4291 		    stdout);
4292 		break;
4293 	default:
4294 		error = got_error(GOT_ERR_OBJ_TYPE);
4295 	}
4296 done:
4297 	free(label1);
4298 	free(label2);
4299 	free(id1);
4300 	free(id2);
4301 	free(path);
4302 	if (worktree)
4303 		got_worktree_close(worktree);
4304 	if (repo) {
4305 		const struct got_error *repo_error;
4306 		repo_error = got_repo_close(repo);
4307 		if (error == NULL)
4308 			error = repo_error;
4309 	}
4310 	return error;
4311 }
4312 
4313 __dead static void
4314 usage_blame(void)
4315 {
4316 	fprintf(stderr,
4317 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
4318 	    getprogname());
4319 	exit(1);
4320 }
4321 
4322 struct blame_line {
4323 	int annotated;
4324 	char *id_str;
4325 	char *committer;
4326 	char datebuf[11]; /* YYYY-MM-DD + NUL */
4327 };
4328 
4329 struct blame_cb_args {
4330 	struct blame_line *lines;
4331 	int nlines;
4332 	int nlines_prec;
4333 	int lineno_cur;
4334 	off_t *line_offsets;
4335 	FILE *f;
4336 	struct got_repository *repo;
4337 };
4338 
4339 static const struct got_error *
4340 blame_cb(void *arg, int nlines, int lineno, struct got_object_id *id)
4341 {
4342 	const struct got_error *err = NULL;
4343 	struct blame_cb_args *a = arg;
4344 	struct blame_line *bline;
4345 	char *line = NULL;
4346 	size_t linesize = 0;
4347 	struct got_commit_object *commit = NULL;
4348 	off_t offset;
4349 	struct tm tm;
4350 	time_t committer_time;
4351 
4352 	if (nlines != a->nlines ||
4353 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
4354 		return got_error(GOT_ERR_RANGE);
4355 
4356 	if (sigint_received)
4357 		return got_error(GOT_ERR_ITER_COMPLETED);
4358 
4359 	if (lineno == -1)
4360 		return NULL; /* no change in this commit */
4361 
4362 	/* Annotate this line. */
4363 	bline = &a->lines[lineno - 1];
4364 	if (bline->annotated)
4365 		return NULL;
4366 	err = got_object_id_str(&bline->id_str, id);
4367 	if (err)
4368 		return err;
4369 
4370 	err = got_object_open_as_commit(&commit, a->repo, id);
4371 	if (err)
4372 		goto done;
4373 
4374 	bline->committer = strdup(got_object_commit_get_committer(commit));
4375 	if (bline->committer == NULL) {
4376 		err = got_error_from_errno("strdup");
4377 		goto done;
4378 	}
4379 
4380 	committer_time = got_object_commit_get_committer_time(commit);
4381 	if (localtime_r(&committer_time, &tm) == NULL)
4382 		return got_error_from_errno("localtime_r");
4383 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
4384 	    &tm) >= sizeof(bline->datebuf)) {
4385 		err = got_error(GOT_ERR_NO_SPACE);
4386 		goto done;
4387 	}
4388 	bline->annotated = 1;
4389 
4390 	/* Print lines annotated so far. */
4391 	bline = &a->lines[a->lineno_cur - 1];
4392 	if (!bline->annotated)
4393 		goto done;
4394 
4395 	offset = a->line_offsets[a->lineno_cur - 1];
4396 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
4397 		err = got_error_from_errno("fseeko");
4398 		goto done;
4399 	}
4400 
4401 	while (bline->annotated) {
4402 		char *smallerthan, *at, *nl, *committer;
4403 		size_t len;
4404 
4405 		if (getline(&line, &linesize, a->f) == -1) {
4406 			if (ferror(a->f))
4407 				err = got_error_from_errno("getline");
4408 			break;
4409 		}
4410 
4411 		committer = bline->committer;
4412 		smallerthan = strchr(committer, '<');
4413 		if (smallerthan && smallerthan[1] != '\0')
4414 			committer = smallerthan + 1;
4415 		at = strchr(committer, '@');
4416 		if (at)
4417 			*at = '\0';
4418 		len = strlen(committer);
4419 		if (len >= 9)
4420 			committer[8] = '\0';
4421 
4422 		nl = strchr(line, '\n');
4423 		if (nl)
4424 			*nl = '\0';
4425 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
4426 		    bline->id_str, bline->datebuf, committer, line);
4427 
4428 		a->lineno_cur++;
4429 		bline = &a->lines[a->lineno_cur - 1];
4430 	}
4431 done:
4432 	if (commit)
4433 		got_object_commit_close(commit);
4434 	free(line);
4435 	return err;
4436 }
4437 
4438 static const struct got_error *
4439 cmd_blame(int argc, char *argv[])
4440 {
4441 	const struct got_error *error;
4442 	struct got_repository *repo = NULL;
4443 	struct got_worktree *worktree = NULL;
4444 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
4445 	char *link_target = NULL;
4446 	struct got_object_id *obj_id = NULL;
4447 	struct got_object_id *commit_id = NULL;
4448 	struct got_blob_object *blob = NULL;
4449 	char *commit_id_str = NULL;
4450 	struct blame_cb_args bca;
4451 	int ch, obj_type, i;
4452 	off_t filesize;
4453 
4454 	memset(&bca, 0, sizeof(bca));
4455 
4456 #ifndef PROFILE
4457 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4458 	    NULL) == -1)
4459 		err(1, "pledge");
4460 #endif
4461 
4462 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
4463 		switch (ch) {
4464 		case 'c':
4465 			commit_id_str = optarg;
4466 			break;
4467 		case 'r':
4468 			repo_path = realpath(optarg, NULL);
4469 			if (repo_path == NULL)
4470 				return got_error_from_errno2("realpath",
4471 				    optarg);
4472 			got_path_strip_trailing_slashes(repo_path);
4473 			break;
4474 		default:
4475 			usage_blame();
4476 			/* NOTREACHED */
4477 		}
4478 	}
4479 
4480 	argc -= optind;
4481 	argv += optind;
4482 
4483 	if (argc == 1)
4484 		path = argv[0];
4485 	else
4486 		usage_blame();
4487 
4488 	cwd = getcwd(NULL, 0);
4489 	if (cwd == NULL) {
4490 		error = got_error_from_errno("getcwd");
4491 		goto done;
4492 	}
4493 	if (repo_path == NULL) {
4494 		error = got_worktree_open(&worktree, cwd);
4495 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4496 			goto done;
4497 		else
4498 			error = NULL;
4499 		if (worktree) {
4500 			repo_path =
4501 			    strdup(got_worktree_get_repo_path(worktree));
4502 			if (repo_path == NULL) {
4503 				error = got_error_from_errno("strdup");
4504 				if (error)
4505 					goto done;
4506 			}
4507 		} else {
4508 			repo_path = strdup(cwd);
4509 			if (repo_path == NULL) {
4510 				error = got_error_from_errno("strdup");
4511 				goto done;
4512 			}
4513 		}
4514 	}
4515 
4516 	error = got_repo_open(&repo, repo_path, NULL);
4517 	if (error != NULL)
4518 		goto done;
4519 
4520 	if (worktree) {
4521 		const char *prefix = got_worktree_get_path_prefix(worktree);
4522 		char *p;
4523 
4524 		error = got_worktree_resolve_path(&p, worktree, path);
4525 		if (error)
4526 			goto done;
4527 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
4528 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
4529 		    p) == -1) {
4530 			error = got_error_from_errno("asprintf");
4531 			free(p);
4532 			goto done;
4533 		}
4534 		free(p);
4535 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
4536 	} else {
4537 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
4538 		if (error)
4539 			goto done;
4540 		error = got_repo_map_path(&in_repo_path, repo, path);
4541 	}
4542 	if (error)
4543 		goto done;
4544 
4545 	if (commit_id_str == NULL) {
4546 		struct got_reference *head_ref;
4547 		error = got_ref_open(&head_ref, repo, worktree ?
4548 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
4549 		if (error != NULL)
4550 			goto done;
4551 		error = got_ref_resolve(&commit_id, repo, head_ref);
4552 		got_ref_close(head_ref);
4553 		if (error != NULL)
4554 			goto done;
4555 	} else {
4556 		error = got_repo_match_object_id(&commit_id, NULL,
4557 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, 1, repo);
4558 		if (error)
4559 			goto done;
4560 	}
4561 
4562 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
4563 	    commit_id, repo);
4564 	if (error)
4565 		goto done;
4566 
4567 	error = got_object_id_by_path(&obj_id, repo, commit_id,
4568 	    link_target ? link_target : in_repo_path);
4569 	if (error)
4570 		goto done;
4571 
4572 	error = got_object_get_type(&obj_type, repo, obj_id);
4573 	if (error)
4574 		goto done;
4575 
4576 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
4577 		error = got_error_path(link_target ? link_target : in_repo_path,
4578 		    GOT_ERR_OBJ_TYPE);
4579 		goto done;
4580 	}
4581 
4582 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192);
4583 	if (error)
4584 		goto done;
4585 	bca.f = got_opentemp();
4586 	if (bca.f == NULL) {
4587 		error = got_error_from_errno("got_opentemp");
4588 		goto done;
4589 	}
4590 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
4591 	    &bca.line_offsets, bca.f, blob);
4592 	if (error || bca.nlines == 0)
4593 		goto done;
4594 
4595 	/* Don't include \n at EOF in the blame line count. */
4596 	if (bca.line_offsets[bca.nlines - 1] == filesize)
4597 		bca.nlines--;
4598 
4599 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
4600 	if (bca.lines == NULL) {
4601 		error = got_error_from_errno("calloc");
4602 		goto done;
4603 	}
4604 	bca.lineno_cur = 1;
4605 	bca.nlines_prec = 0;
4606 	i = bca.nlines;
4607 	while (i > 0) {
4608 		i /= 10;
4609 		bca.nlines_prec++;
4610 	}
4611 	bca.repo = repo;
4612 
4613 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
4614 	    repo, blame_cb, &bca, check_cancelled, NULL);
4615 done:
4616 	free(in_repo_path);
4617 	free(link_target);
4618 	free(repo_path);
4619 	free(cwd);
4620 	free(commit_id);
4621 	free(obj_id);
4622 	if (blob)
4623 		got_object_blob_close(blob);
4624 	if (worktree)
4625 		got_worktree_close(worktree);
4626 	if (repo) {
4627 		const struct got_error *repo_error;
4628 		repo_error = got_repo_close(repo);
4629 		if (error == NULL)
4630 			error = repo_error;
4631 	}
4632 	if (bca.lines) {
4633 		for (i = 0; i < bca.nlines; i++) {
4634 			struct blame_line *bline = &bca.lines[i];
4635 			free(bline->id_str);
4636 			free(bline->committer);
4637 		}
4638 		free(bca.lines);
4639 	}
4640 	free(bca.line_offsets);
4641 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
4642 		error = got_error_from_errno("fclose");
4643 	return error;
4644 }
4645 
4646 __dead static void
4647 usage_tree(void)
4648 {
4649 	fprintf(stderr,
4650 	    "usage: %s tree [-c commit] [-r repository-path] [-iR] [path]\n",
4651 	    getprogname());
4652 	exit(1);
4653 }
4654 
4655 static const struct got_error *
4656 print_entry(struct got_tree_entry *te, const char *id, const char *path,
4657     const char *root_path, struct got_repository *repo)
4658 {
4659 	const struct got_error *err = NULL;
4660 	int is_root_path = (strcmp(path, root_path) == 0);
4661 	const char *modestr = "";
4662 	mode_t mode = got_tree_entry_get_mode(te);
4663 	char *link_target = NULL;
4664 
4665 	path += strlen(root_path);
4666 	while (path[0] == '/')
4667 		path++;
4668 
4669 	if (got_object_tree_entry_is_submodule(te))
4670 		modestr = "$";
4671 	else if (S_ISLNK(mode)) {
4672 		int i;
4673 
4674 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
4675 		if (err)
4676 			return err;
4677 		for (i = 0; i < strlen(link_target); i++) {
4678 			if (!isprint((unsigned char)link_target[i]))
4679 				link_target[i] = '?';
4680 		}
4681 
4682 		modestr = "@";
4683 	}
4684 	else if (S_ISDIR(mode))
4685 		modestr = "/";
4686 	else if (mode & S_IXUSR)
4687 		modestr = "*";
4688 
4689 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
4690 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
4691 	    link_target ? " -> ": "", link_target ? link_target : "");
4692 
4693 	free(link_target);
4694 	return NULL;
4695 }
4696 
4697 static const struct got_error *
4698 print_tree(const char *path, struct got_object_id *commit_id,
4699     int show_ids, int recurse, const char *root_path,
4700     struct got_repository *repo)
4701 {
4702 	const struct got_error *err = NULL;
4703 	struct got_object_id *tree_id = NULL;
4704 	struct got_tree_object *tree = NULL;
4705 	int nentries, i;
4706 
4707 	err = got_object_id_by_path(&tree_id, repo, commit_id, path);
4708 	if (err)
4709 		goto done;
4710 
4711 	err = got_object_open_as_tree(&tree, repo, tree_id);
4712 	if (err)
4713 		goto done;
4714 	nentries = got_object_tree_get_nentries(tree);
4715 	for (i = 0; i < nentries; i++) {
4716 		struct got_tree_entry *te;
4717 		char *id = NULL;
4718 
4719 		if (sigint_received || sigpipe_received)
4720 			break;
4721 
4722 		te = got_object_tree_get_entry(tree, i);
4723 		if (show_ids) {
4724 			char *id_str;
4725 			err = got_object_id_str(&id_str,
4726 			    got_tree_entry_get_id(te));
4727 			if (err)
4728 				goto done;
4729 			if (asprintf(&id, "%s ", id_str) == -1) {
4730 				err = got_error_from_errno("asprintf");
4731 				free(id_str);
4732 				goto done;
4733 			}
4734 			free(id_str);
4735 		}
4736 		err = print_entry(te, id, path, root_path, repo);
4737 		free(id);
4738 		if (err)
4739 			goto done;
4740 
4741 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
4742 			char *child_path;
4743 			if (asprintf(&child_path, "%s%s%s", path,
4744 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
4745 			    got_tree_entry_get_name(te)) == -1) {
4746 				err = got_error_from_errno("asprintf");
4747 				goto done;
4748 			}
4749 			err = print_tree(child_path, commit_id, show_ids, 1,
4750 			    root_path, repo);
4751 			free(child_path);
4752 			if (err)
4753 				goto done;
4754 		}
4755 	}
4756 done:
4757 	if (tree)
4758 		got_object_tree_close(tree);
4759 	free(tree_id);
4760 	return err;
4761 }
4762 
4763 static const struct got_error *
4764 cmd_tree(int argc, char *argv[])
4765 {
4766 	const struct got_error *error;
4767 	struct got_repository *repo = NULL;
4768 	struct got_worktree *worktree = NULL;
4769 	const char *path, *refname = NULL;
4770 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
4771 	struct got_object_id *commit_id = NULL;
4772 	char *commit_id_str = NULL;
4773 	int show_ids = 0, recurse = 0;
4774 	int ch;
4775 
4776 #ifndef PROFILE
4777 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4778 	    NULL) == -1)
4779 		err(1, "pledge");
4780 #endif
4781 
4782 	while ((ch = getopt(argc, argv, "c:r:iR")) != -1) {
4783 		switch (ch) {
4784 		case 'c':
4785 			commit_id_str = optarg;
4786 			break;
4787 		case 'r':
4788 			repo_path = realpath(optarg, NULL);
4789 			if (repo_path == NULL)
4790 				return got_error_from_errno2("realpath",
4791 				    optarg);
4792 			got_path_strip_trailing_slashes(repo_path);
4793 			break;
4794 		case 'i':
4795 			show_ids = 1;
4796 			break;
4797 		case 'R':
4798 			recurse = 1;
4799 			break;
4800 		default:
4801 			usage_tree();
4802 			/* NOTREACHED */
4803 		}
4804 	}
4805 
4806 	argc -= optind;
4807 	argv += optind;
4808 
4809 	if (argc == 1)
4810 		path = argv[0];
4811 	else if (argc > 1)
4812 		usage_tree();
4813 	else
4814 		path = NULL;
4815 
4816 	cwd = getcwd(NULL, 0);
4817 	if (cwd == NULL) {
4818 		error = got_error_from_errno("getcwd");
4819 		goto done;
4820 	}
4821 	if (repo_path == NULL) {
4822 		error = got_worktree_open(&worktree, cwd);
4823 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4824 			goto done;
4825 		else
4826 			error = NULL;
4827 		if (worktree) {
4828 			repo_path =
4829 			    strdup(got_worktree_get_repo_path(worktree));
4830 			if (repo_path == NULL)
4831 				error = got_error_from_errno("strdup");
4832 			if (error)
4833 				goto done;
4834 		} else {
4835 			repo_path = strdup(cwd);
4836 			if (repo_path == NULL) {
4837 				error = got_error_from_errno("strdup");
4838 				goto done;
4839 			}
4840 		}
4841 	}
4842 
4843 	error = got_repo_open(&repo, repo_path, NULL);
4844 	if (error != NULL)
4845 		goto done;
4846 
4847 	if (worktree) {
4848 		const char *prefix = got_worktree_get_path_prefix(worktree);
4849 		char *p;
4850 
4851 		if (path == NULL)
4852 			path = "";
4853 		error = got_worktree_resolve_path(&p, worktree, path);
4854 		if (error)
4855 			goto done;
4856 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
4857 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
4858 		    p) == -1) {
4859 			error = got_error_from_errno("asprintf");
4860 			free(p);
4861 			goto done;
4862 		}
4863 		free(p);
4864 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
4865 		if (error)
4866 			goto done;
4867 	} else {
4868 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
4869 		if (error)
4870 			goto done;
4871 		if (path == NULL)
4872 			path = "/";
4873 		error = got_repo_map_path(&in_repo_path, repo, path);
4874 		if (error != NULL)
4875 			goto done;
4876 	}
4877 
4878 	if (commit_id_str == NULL) {
4879 		struct got_reference *head_ref;
4880 		if (worktree)
4881 			refname = got_worktree_get_head_ref_name(worktree);
4882 		else
4883 			refname = GOT_REF_HEAD;
4884 		error = got_ref_open(&head_ref, repo, refname, 0);
4885 		if (error != NULL)
4886 			goto done;
4887 		error = got_ref_resolve(&commit_id, repo, head_ref);
4888 		got_ref_close(head_ref);
4889 		if (error != NULL)
4890 			goto done;
4891 	} else {
4892 		error = got_repo_match_object_id(&commit_id, NULL,
4893 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, 1, repo);
4894 		if (error)
4895 			goto done;
4896 	}
4897 
4898 	error = print_tree(in_repo_path, commit_id, show_ids, recurse,
4899 	    in_repo_path, repo);
4900 done:
4901 	free(in_repo_path);
4902 	free(repo_path);
4903 	free(cwd);
4904 	free(commit_id);
4905 	if (worktree)
4906 		got_worktree_close(worktree);
4907 	if (repo) {
4908 		const struct got_error *repo_error;
4909 		repo_error = got_repo_close(repo);
4910 		if (error == NULL)
4911 			error = repo_error;
4912 	}
4913 	return error;
4914 }
4915 
4916 __dead static void
4917 usage_status(void)
4918 {
4919 	fprintf(stderr, "usage: %s status [-s status-codes ] [path ...]\n",
4920 	    getprogname());
4921 	exit(1);
4922 }
4923 
4924 static const struct got_error *
4925 print_status(void *arg, unsigned char status, unsigned char staged_status,
4926     const char *path, struct got_object_id *blob_id,
4927     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4928     int dirfd, const char *de_name)
4929 {
4930 	if (status == staged_status && (status == GOT_STATUS_DELETE))
4931 		status = GOT_STATUS_NO_CHANGE;
4932 	if (arg) {
4933 		char *status_codes = arg;
4934 		size_t ncodes = strlen(status_codes);
4935 		int i;
4936 		for (i = 0; i < ncodes ; i++) {
4937 			if (status == status_codes[i] ||
4938 			    staged_status == status_codes[i])
4939 				break;
4940 		}
4941 		if (i == ncodes)
4942 			return NULL;
4943 	}
4944 	printf("%c%c %s\n", status, staged_status, path);
4945 	return NULL;
4946 }
4947 
4948 static const struct got_error *
4949 cmd_status(int argc, char *argv[])
4950 {
4951 	const struct got_error *error = NULL;
4952 	struct got_repository *repo = NULL;
4953 	struct got_worktree *worktree = NULL;
4954 	char *cwd = NULL, *status_codes = NULL;;
4955 	struct got_pathlist_head paths;
4956 	struct got_pathlist_entry *pe;
4957 	int ch, i;
4958 
4959 	TAILQ_INIT(&paths);
4960 
4961 	while ((ch = getopt(argc, argv, "s:")) != -1) {
4962 		switch (ch) {
4963 		case 's':
4964 			for (i = 0; i < strlen(optarg); i++) {
4965 				switch (optarg[i]) {
4966 				case GOT_STATUS_MODIFY:
4967 				case GOT_STATUS_ADD:
4968 				case GOT_STATUS_DELETE:
4969 				case GOT_STATUS_CONFLICT:
4970 				case GOT_STATUS_MISSING:
4971 				case GOT_STATUS_OBSTRUCTED:
4972 				case GOT_STATUS_UNVERSIONED:
4973 				case GOT_STATUS_MODE_CHANGE:
4974 				case GOT_STATUS_NONEXISTENT:
4975 					break;
4976 				default:
4977 					errx(1, "invalid status code '%c'",
4978 					    optarg[i]);
4979 				}
4980 			}
4981 			status_codes = optarg;
4982 			break;
4983 		default:
4984 			usage_status();
4985 			/* NOTREACHED */
4986 		}
4987 	}
4988 
4989 	argc -= optind;
4990 	argv += optind;
4991 
4992 #ifndef PROFILE
4993 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4994 	    NULL) == -1)
4995 		err(1, "pledge");
4996 #endif
4997 	cwd = getcwd(NULL, 0);
4998 	if (cwd == NULL) {
4999 		error = got_error_from_errno("getcwd");
5000 		goto done;
5001 	}
5002 
5003 	error = got_worktree_open(&worktree, cwd);
5004 	if (error) {
5005 		if (error->code == GOT_ERR_NOT_WORKTREE)
5006 			error = wrap_not_worktree_error(error, "status", cwd);
5007 		goto done;
5008 	}
5009 
5010 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
5011 	    NULL);
5012 	if (error != NULL)
5013 		goto done;
5014 
5015 	error = apply_unveil(got_repo_get_path(repo), 1,
5016 	    got_worktree_get_root_path(worktree));
5017 	if (error)
5018 		goto done;
5019 
5020 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
5021 	if (error)
5022 		goto done;
5023 
5024 	error = got_worktree_status(worktree, &paths, repo, print_status,
5025 	    status_codes, check_cancelled, NULL);
5026 done:
5027 	TAILQ_FOREACH(pe, &paths, entry)
5028 		free((char *)pe->path);
5029 	got_pathlist_free(&paths);
5030 	free(cwd);
5031 	return error;
5032 }
5033 
5034 __dead static void
5035 usage_ref(void)
5036 {
5037 	fprintf(stderr,
5038 	    "usage: %s ref [-r repository] [-l] [-c object] [-s reference] "
5039 	        "[-d] [name]\n",
5040 	    getprogname());
5041 	exit(1);
5042 }
5043 
5044 static const struct got_error *
5045 list_refs(struct got_repository *repo, const char *refname)
5046 {
5047 	static const struct got_error *err = NULL;
5048 	struct got_reflist_head refs;
5049 	struct got_reflist_entry *re;
5050 
5051 	SIMPLEQ_INIT(&refs);
5052 	err = got_ref_list(&refs, repo, refname, got_ref_cmp_by_name, NULL);
5053 	if (err)
5054 		return err;
5055 
5056 	SIMPLEQ_FOREACH(re, &refs, entry) {
5057 		char *refstr;
5058 		refstr = got_ref_to_str(re->ref);
5059 		if (refstr == NULL)
5060 			return got_error_from_errno("got_ref_to_str");
5061 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
5062 		free(refstr);
5063 	}
5064 
5065 	got_ref_list_free(&refs);
5066 	return NULL;
5067 }
5068 
5069 static const struct got_error *
5070 delete_ref(struct got_repository *repo, const char *refname)
5071 {
5072 	const struct got_error *err = NULL;
5073 	struct got_reference *ref;
5074 
5075 	err = got_ref_open(&ref, repo, refname, 0);
5076 	if (err)
5077 		return err;
5078 
5079 	err = got_ref_delete(ref, repo);
5080 	got_ref_close(ref);
5081 	return err;
5082 }
5083 
5084 static const struct got_error *
5085 add_ref(struct got_repository *repo, const char *refname, const char *target)
5086 {
5087 	const struct got_error *err = NULL;
5088 	struct got_object_id *id;
5089 	struct got_reference *ref = NULL;
5090 
5091 	/*
5092 	 * Don't let the user create a reference name with a leading '-'.
5093 	 * While technically a valid reference name, this case is usually
5094 	 * an unintended typo.
5095 	 */
5096 	if (refname[0] == '-')
5097 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5098 
5099 	err = got_repo_match_object_id_prefix(&id, target, GOT_OBJ_TYPE_ANY,
5100 	    repo);
5101 	if (err) {
5102 		struct got_reference *target_ref;
5103 
5104 		if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
5105 			return err;
5106 		err = got_ref_open(&target_ref, repo, target, 0);
5107 		if (err)
5108 			return err;
5109 		err = got_ref_resolve(&id, repo, target_ref);
5110 		got_ref_close(target_ref);
5111 		if (err)
5112 			return err;
5113 	}
5114 
5115 	err = got_ref_alloc(&ref, refname, id);
5116 	if (err)
5117 		goto done;
5118 
5119 	err = got_ref_write(ref, repo);
5120 done:
5121 	if (ref)
5122 		got_ref_close(ref);
5123 	free(id);
5124 	return err;
5125 }
5126 
5127 static const struct got_error *
5128 add_symref(struct got_repository *repo, const char *refname, const char *target)
5129 {
5130 	const struct got_error *err = NULL;
5131 	struct got_reference *ref = NULL;
5132 	struct got_reference *target_ref = NULL;
5133 
5134 	/*
5135 	 * Don't let the user create a reference name with a leading '-'.
5136 	 * While technically a valid reference name, this case is usually
5137 	 * an unintended typo.
5138 	 */
5139 	if (refname[0] == '-')
5140 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5141 
5142 	err = got_ref_open(&target_ref, repo, target, 0);
5143 	if (err)
5144 		return err;
5145 
5146 	err = got_ref_alloc_symref(&ref, refname, target_ref);
5147 	if (err)
5148 		goto done;
5149 
5150 	err = got_ref_write(ref, repo);
5151 done:
5152 	if (target_ref)
5153 		got_ref_close(target_ref);
5154 	if (ref)
5155 		got_ref_close(ref);
5156 	return err;
5157 }
5158 
5159 static const struct got_error *
5160 cmd_ref(int argc, char *argv[])
5161 {
5162 	const struct got_error *error = NULL;
5163 	struct got_repository *repo = NULL;
5164 	struct got_worktree *worktree = NULL;
5165 	char *cwd = NULL, *repo_path = NULL;
5166 	int ch, do_list = 0, do_delete = 0;
5167 	const char *obj_arg = NULL, *symref_target= NULL;
5168 	char *refname = NULL;
5169 
5170 	while ((ch = getopt(argc, argv, "c:dr:ls:")) != -1) {
5171 		switch (ch) {
5172 		case 'c':
5173 			obj_arg = optarg;
5174 			break;
5175 		case 'd':
5176 			do_delete = 1;
5177 			break;
5178 		case 'r':
5179 			repo_path = realpath(optarg, NULL);
5180 			if (repo_path == NULL)
5181 				return got_error_from_errno2("realpath",
5182 				    optarg);
5183 			got_path_strip_trailing_slashes(repo_path);
5184 			break;
5185 		case 'l':
5186 			do_list = 1;
5187 			break;
5188 		case 's':
5189 			symref_target = optarg;
5190 			break;
5191 		default:
5192 			usage_ref();
5193 			/* NOTREACHED */
5194 		}
5195 	}
5196 
5197 	if (obj_arg && do_list)
5198 		errx(1, "-c and -l options are mutually exclusive");
5199 	if (obj_arg && do_delete)
5200 		errx(1, "-c and -d options are mutually exclusive");
5201 	if (obj_arg && symref_target)
5202 		errx(1, "-c and -s options are mutually exclusive");
5203 	if (symref_target && do_delete)
5204 		errx(1, "-s and -d options are mutually exclusive");
5205 	if (symref_target && do_list)
5206 		errx(1, "-s and -l options are mutually exclusive");
5207 	if (do_delete && do_list)
5208 		errx(1, "-d and -l options are mutually exclusive");
5209 
5210 	argc -= optind;
5211 	argv += optind;
5212 
5213 	if (do_list) {
5214 		if (argc != 0 && argc != 1)
5215 			usage_ref();
5216 		if (argc == 1) {
5217 			refname = strdup(argv[0]);
5218 			if (refname == NULL) {
5219 				error = got_error_from_errno("strdup");
5220 				goto done;
5221 			}
5222 		}
5223 	} else {
5224 		if (argc != 1)
5225 			usage_ref();
5226 		refname = strdup(argv[0]);
5227 		if (refname == NULL) {
5228 			error = got_error_from_errno("strdup");
5229 			goto done;
5230 		}
5231 	}
5232 
5233 	if (refname)
5234 		got_path_strip_trailing_slashes(refname);
5235 
5236 #ifndef PROFILE
5237 	if (do_list) {
5238 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
5239 		    NULL) == -1)
5240 			err(1, "pledge");
5241 	} else {
5242 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
5243 		    "sendfd unveil", NULL) == -1)
5244 			err(1, "pledge");
5245 	}
5246 #endif
5247 	cwd = getcwd(NULL, 0);
5248 	if (cwd == NULL) {
5249 		error = got_error_from_errno("getcwd");
5250 		goto done;
5251 	}
5252 
5253 	if (repo_path == NULL) {
5254 		error = got_worktree_open(&worktree, cwd);
5255 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5256 			goto done;
5257 		else
5258 			error = NULL;
5259 		if (worktree) {
5260 			repo_path =
5261 			    strdup(got_worktree_get_repo_path(worktree));
5262 			if (repo_path == NULL)
5263 				error = got_error_from_errno("strdup");
5264 			if (error)
5265 				goto done;
5266 		} else {
5267 			repo_path = strdup(cwd);
5268 			if (repo_path == NULL) {
5269 				error = got_error_from_errno("strdup");
5270 				goto done;
5271 			}
5272 		}
5273 	}
5274 
5275 	error = got_repo_open(&repo, repo_path, NULL);
5276 	if (error != NULL)
5277 		goto done;
5278 
5279 	error = apply_unveil(got_repo_get_path(repo), do_list,
5280 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5281 	if (error)
5282 		goto done;
5283 
5284 	if (do_list)
5285 		error = list_refs(repo, refname);
5286 	else if (do_delete)
5287 		error = delete_ref(repo, refname);
5288 	else if (symref_target)
5289 		error = add_symref(repo, refname, symref_target);
5290 	else {
5291 		if (obj_arg == NULL)
5292 			usage_ref();
5293 		error = add_ref(repo, refname, obj_arg);
5294 	}
5295 done:
5296 	free(refname);
5297 	if (repo)
5298 		got_repo_close(repo);
5299 	if (worktree)
5300 		got_worktree_close(worktree);
5301 	free(cwd);
5302 	free(repo_path);
5303 	return error;
5304 }
5305 
5306 __dead static void
5307 usage_branch(void)
5308 {
5309 	fprintf(stderr,
5310 	    "usage: %s branch [-c commit] [-d] [-r repository] [-l] [-n] "
5311 	        "[name]\n", getprogname());
5312 	exit(1);
5313 }
5314 
5315 static const struct got_error *
5316 list_branch(struct got_repository *repo, struct got_worktree *worktree,
5317     struct got_reference *ref)
5318 {
5319 	const struct got_error *err = NULL;
5320 	const char *refname, *marker = "  ";
5321 	char *refstr;
5322 
5323 	refname = got_ref_get_name(ref);
5324 	if (worktree && strcmp(refname,
5325 	    got_worktree_get_head_ref_name(worktree)) == 0) {
5326 		struct got_object_id *id = NULL;
5327 
5328 		err = got_ref_resolve(&id, repo, ref);
5329 		if (err)
5330 			return err;
5331 		if (got_object_id_cmp(id,
5332 		    got_worktree_get_base_commit_id(worktree)) == 0)
5333 			marker = "* ";
5334 		else
5335 			marker = "~ ";
5336 		free(id);
5337 	}
5338 
5339 	if (strncmp(refname, "refs/heads/", 11) == 0)
5340 		refname += 11;
5341 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5342 		refname += 18;
5343 
5344 	refstr = got_ref_to_str(ref);
5345 	if (refstr == NULL)
5346 		return got_error_from_errno("got_ref_to_str");
5347 
5348 	printf("%s%s: %s\n", marker, refname, refstr);
5349 	free(refstr);
5350 	return NULL;
5351 }
5352 
5353 static const struct got_error *
5354 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
5355 {
5356 	const char *refname;
5357 
5358 	if (worktree == NULL)
5359 		return got_error(GOT_ERR_NOT_WORKTREE);
5360 
5361 	refname = got_worktree_get_head_ref_name(worktree);
5362 
5363 	if (strncmp(refname, "refs/heads/", 11) == 0)
5364 		refname += 11;
5365 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5366 		refname += 18;
5367 
5368 	printf("%s\n", refname);
5369 
5370 	return NULL;
5371 }
5372 
5373 static const struct got_error *
5374 list_branches(struct got_repository *repo, struct got_worktree *worktree)
5375 {
5376 	static const struct got_error *err = NULL;
5377 	struct got_reflist_head refs;
5378 	struct got_reflist_entry *re;
5379 	struct got_reference *temp_ref = NULL;
5380 	int rebase_in_progress, histedit_in_progress;
5381 
5382 	SIMPLEQ_INIT(&refs);
5383 
5384 	if (worktree) {
5385 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
5386 		    worktree);
5387 		if (err)
5388 			return err;
5389 
5390 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
5391 		    worktree);
5392 		if (err)
5393 			return err;
5394 
5395 		if (rebase_in_progress || histedit_in_progress) {
5396 			err = got_ref_open(&temp_ref, repo,
5397 			    got_worktree_get_head_ref_name(worktree), 0);
5398 			if (err)
5399 				return err;
5400 			list_branch(repo, worktree, temp_ref);
5401 			got_ref_close(temp_ref);
5402 		}
5403 	}
5404 
5405 	err = got_ref_list(&refs, repo, "refs/heads",
5406 	    got_ref_cmp_by_name, NULL);
5407 	if (err)
5408 		return err;
5409 
5410 	SIMPLEQ_FOREACH(re, &refs, entry)
5411 		list_branch(repo, worktree, re->ref);
5412 
5413 	got_ref_list_free(&refs);
5414 	return NULL;
5415 }
5416 
5417 static const struct got_error *
5418 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
5419     const char *branch_name)
5420 {
5421 	const struct got_error *err = NULL;
5422 	struct got_reference *ref = NULL;
5423 	char *refname;
5424 
5425 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
5426 		return got_error_from_errno("asprintf");
5427 
5428 	err = got_ref_open(&ref, repo, refname, 0);
5429 	if (err)
5430 		goto done;
5431 
5432 	if (worktree &&
5433 	    strcmp(got_worktree_get_head_ref_name(worktree),
5434 	    got_ref_get_name(ref)) == 0) {
5435 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
5436 		    "will not delete this work tree's current branch");
5437 		goto done;
5438 	}
5439 
5440 	err = got_ref_delete(ref, repo);
5441 done:
5442 	if (ref)
5443 		got_ref_close(ref);
5444 	free(refname);
5445 	return err;
5446 }
5447 
5448 static const struct got_error *
5449 add_branch(struct got_repository *repo, const char *branch_name,
5450     struct got_object_id *base_commit_id)
5451 {
5452 	const struct got_error *err = NULL;
5453 	struct got_reference *ref = NULL;
5454 	char *base_refname = NULL, *refname = NULL;
5455 
5456 	/*
5457 	 * Don't let the user create a branch name with a leading '-'.
5458 	 * While technically a valid reference name, this case is usually
5459 	 * an unintended typo.
5460 	 */
5461 	if (branch_name[0] == '-')
5462 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
5463 
5464 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
5465 		err = got_error_from_errno("asprintf");
5466 		goto done;
5467 	}
5468 
5469 	err = got_ref_open(&ref, repo, refname, 0);
5470 	if (err == NULL) {
5471 		err = got_error(GOT_ERR_BRANCH_EXISTS);
5472 		goto done;
5473 	} else if (err->code != GOT_ERR_NOT_REF)
5474 		goto done;
5475 
5476 	err = got_ref_alloc(&ref, refname, base_commit_id);
5477 	if (err)
5478 		goto done;
5479 
5480 	err = got_ref_write(ref, repo);
5481 done:
5482 	if (ref)
5483 		got_ref_close(ref);
5484 	free(base_refname);
5485 	free(refname);
5486 	return err;
5487 }
5488 
5489 static const struct got_error *
5490 cmd_branch(int argc, char *argv[])
5491 {
5492 	const struct got_error *error = NULL;
5493 	struct got_repository *repo = NULL;
5494 	struct got_worktree *worktree = NULL;
5495 	char *cwd = NULL, *repo_path = NULL;
5496 	int ch, do_list = 0, do_show = 0, do_update = 1;
5497 	const char *delref = NULL, *commit_id_arg = NULL;
5498 	struct got_reference *ref = NULL;
5499 	struct got_pathlist_head paths;
5500 	struct got_pathlist_entry *pe;
5501 	struct got_object_id *commit_id = NULL;
5502 	char *commit_id_str = NULL;
5503 
5504 	TAILQ_INIT(&paths);
5505 
5506 	while ((ch = getopt(argc, argv, "c:d:r:ln")) != -1) {
5507 		switch (ch) {
5508 		case 'c':
5509 			commit_id_arg = optarg;
5510 			break;
5511 		case 'd':
5512 			delref = optarg;
5513 			break;
5514 		case 'r':
5515 			repo_path = realpath(optarg, NULL);
5516 			if (repo_path == NULL)
5517 				return got_error_from_errno2("realpath",
5518 				    optarg);
5519 			got_path_strip_trailing_slashes(repo_path);
5520 			break;
5521 		case 'l':
5522 			do_list = 1;
5523 			break;
5524 		case 'n':
5525 			do_update = 0;
5526 			break;
5527 		default:
5528 			usage_branch();
5529 			/* NOTREACHED */
5530 		}
5531 	}
5532 
5533 	if (do_list && delref)
5534 		errx(1, "-l and -d options are mutually exclusive");
5535 
5536 	argc -= optind;
5537 	argv += optind;
5538 
5539 	if (!do_list && !delref && argc == 0)
5540 		do_show = 1;
5541 
5542 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
5543 		errx(1, "-c option can only be used when creating a branch");
5544 
5545 	if (do_list || delref) {
5546 		if (argc > 0)
5547 			usage_branch();
5548 	} else if (!do_show && argc != 1)
5549 		usage_branch();
5550 
5551 #ifndef PROFILE
5552 	if (do_list || do_show) {
5553 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
5554 		    NULL) == -1)
5555 			err(1, "pledge");
5556 	} else {
5557 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
5558 		    "sendfd unveil", NULL) == -1)
5559 			err(1, "pledge");
5560 	}
5561 #endif
5562 	cwd = getcwd(NULL, 0);
5563 	if (cwd == NULL) {
5564 		error = got_error_from_errno("getcwd");
5565 		goto done;
5566 	}
5567 
5568 	if (repo_path == NULL) {
5569 		error = got_worktree_open(&worktree, cwd);
5570 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5571 			goto done;
5572 		else
5573 			error = NULL;
5574 		if (worktree) {
5575 			repo_path =
5576 			    strdup(got_worktree_get_repo_path(worktree));
5577 			if (repo_path == NULL)
5578 				error = got_error_from_errno("strdup");
5579 			if (error)
5580 				goto done;
5581 		} else {
5582 			repo_path = strdup(cwd);
5583 			if (repo_path == NULL) {
5584 				error = got_error_from_errno("strdup");
5585 				goto done;
5586 			}
5587 		}
5588 	}
5589 
5590 	error = got_repo_open(&repo, repo_path, NULL);
5591 	if (error != NULL)
5592 		goto done;
5593 
5594 	error = apply_unveil(got_repo_get_path(repo), do_list,
5595 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5596 	if (error)
5597 		goto done;
5598 
5599 	if (do_show)
5600 		error = show_current_branch(repo, worktree);
5601 	else if (do_list)
5602 		error = list_branches(repo, worktree);
5603 	else if (delref)
5604 		error = delete_branch(repo, worktree, delref);
5605 	else {
5606 		if (commit_id_arg == NULL)
5607 			commit_id_arg = worktree ?
5608 			    got_worktree_get_head_ref_name(worktree) :
5609 			    GOT_REF_HEAD;
5610 		error = got_repo_match_object_id(&commit_id, NULL,
5611 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, 1, repo);
5612 		if (error)
5613 			goto done;
5614 		error = add_branch(repo, argv[0], commit_id);
5615 		if (error)
5616 			goto done;
5617 		if (worktree && do_update) {
5618 			struct got_update_progress_arg upa;
5619 			char *branch_refname = NULL;
5620 
5621 			error = got_object_id_str(&commit_id_str, commit_id);
5622 			if (error)
5623 				goto done;
5624 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
5625 			    worktree);
5626 			if (error)
5627 				goto done;
5628 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
5629 			    == -1) {
5630 				error = got_error_from_errno("asprintf");
5631 				goto done;
5632 			}
5633 			error = got_ref_open(&ref, repo, branch_refname, 0);
5634 			free(branch_refname);
5635 			if (error)
5636 				goto done;
5637 			error = switch_head_ref(ref, commit_id, worktree,
5638 			    repo);
5639 			if (error)
5640 				goto done;
5641 			error = got_worktree_set_base_commit_id(worktree, repo,
5642 			    commit_id);
5643 			if (error)
5644 				goto done;
5645 			memset(&upa, 0, sizeof(upa));
5646 			error = got_worktree_checkout_files(worktree, &paths,
5647 			    repo, update_progress, &upa, check_cancelled,
5648 			    NULL);
5649 			if (error)
5650 				goto done;
5651 			if (upa.did_something)
5652 				printf("Updated to commit %s\n", commit_id_str);
5653 			print_update_progress_stats(&upa);
5654 		}
5655 	}
5656 done:
5657 	if (ref)
5658 		got_ref_close(ref);
5659 	if (repo)
5660 		got_repo_close(repo);
5661 	if (worktree)
5662 		got_worktree_close(worktree);
5663 	free(cwd);
5664 	free(repo_path);
5665 	free(commit_id);
5666 	free(commit_id_str);
5667 	TAILQ_FOREACH(pe, &paths, entry)
5668 		free((char *)pe->path);
5669 	got_pathlist_free(&paths);
5670 	return error;
5671 }
5672 
5673 
5674 __dead static void
5675 usage_tag(void)
5676 {
5677 	fprintf(stderr,
5678 	    "usage: %s tag [-c commit] [-r repository] [-l] "
5679 	        "[-m message] name\n", getprogname());
5680 	exit(1);
5681 }
5682 
5683 #if 0
5684 static const struct got_error *
5685 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
5686 {
5687 	const struct got_error *err = NULL;
5688 	struct got_reflist_entry *re, *se, *new;
5689 	struct got_object_id *re_id, *se_id;
5690 	struct got_tag_object *re_tag, *se_tag;
5691 	time_t re_time, se_time;
5692 
5693 	SIMPLEQ_FOREACH(re, tags, entry) {
5694 		se = SIMPLEQ_FIRST(sorted);
5695 		if (se == NULL) {
5696 			err = got_reflist_entry_dup(&new, re);
5697 			if (err)
5698 				return err;
5699 			SIMPLEQ_INSERT_HEAD(sorted, new, entry);
5700 			continue;
5701 		} else {
5702 			err = got_ref_resolve(&re_id, repo, re->ref);
5703 			if (err)
5704 				break;
5705 			err = got_object_open_as_tag(&re_tag, repo, re_id);
5706 			free(re_id);
5707 			if (err)
5708 				break;
5709 			re_time = got_object_tag_get_tagger_time(re_tag);
5710 			got_object_tag_close(re_tag);
5711 		}
5712 
5713 		while (se) {
5714 			err = got_ref_resolve(&se_id, repo, re->ref);
5715 			if (err)
5716 				break;
5717 			err = got_object_open_as_tag(&se_tag, repo, se_id);
5718 			free(se_id);
5719 			if (err)
5720 				break;
5721 			se_time = got_object_tag_get_tagger_time(se_tag);
5722 			got_object_tag_close(se_tag);
5723 
5724 			if (se_time > re_time) {
5725 				err = got_reflist_entry_dup(&new, re);
5726 				if (err)
5727 					return err;
5728 				SIMPLEQ_INSERT_AFTER(sorted, se, new, entry);
5729 				break;
5730 			}
5731 			se = SIMPLEQ_NEXT(se, entry);
5732 			continue;
5733 		}
5734 	}
5735 done:
5736 	return err;
5737 }
5738 #endif
5739 
5740 static const struct got_error *
5741 list_tags(struct got_repository *repo, struct got_worktree *worktree)
5742 {
5743 	static const struct got_error *err = NULL;
5744 	struct got_reflist_head refs;
5745 	struct got_reflist_entry *re;
5746 
5747 	SIMPLEQ_INIT(&refs);
5748 
5749 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
5750 	if (err)
5751 		return err;
5752 
5753 	SIMPLEQ_FOREACH(re, &refs, entry) {
5754 		const char *refname;
5755 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
5756 		char datebuf[26];
5757 		const char *tagger;
5758 		time_t tagger_time;
5759 		struct got_object_id *id;
5760 		struct got_tag_object *tag;
5761 		struct got_commit_object *commit = NULL;
5762 
5763 		refname = got_ref_get_name(re->ref);
5764 		if (strncmp(refname, "refs/tags/", 10) != 0)
5765 			continue;
5766 		refname += 10;
5767 		refstr = got_ref_to_str(re->ref);
5768 		if (refstr == NULL) {
5769 			err = got_error_from_errno("got_ref_to_str");
5770 			break;
5771 		}
5772 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
5773 		free(refstr);
5774 
5775 		err = got_ref_resolve(&id, repo, re->ref);
5776 		if (err)
5777 			break;
5778 		err = got_object_open_as_tag(&tag, repo, id);
5779 		if (err) {
5780 			if (err->code != GOT_ERR_OBJ_TYPE) {
5781 				free(id);
5782 				break;
5783 			}
5784 			/* "lightweight" tag */
5785 			err = got_object_open_as_commit(&commit, repo, id);
5786 			if (err) {
5787 				free(id);
5788 				break;
5789 			}
5790 			tagger = got_object_commit_get_committer(commit);
5791 			tagger_time =
5792 			    got_object_commit_get_committer_time(commit);
5793 			err = got_object_id_str(&id_str, id);
5794 			free(id);
5795 			if (err)
5796 				break;
5797 		} else {
5798 			free(id);
5799 			tagger = got_object_tag_get_tagger(tag);
5800 			tagger_time = got_object_tag_get_tagger_time(tag);
5801 			err = got_object_id_str(&id_str,
5802 			    got_object_tag_get_object_id(tag));
5803 			if (err)
5804 				break;
5805 		}
5806 		printf("from: %s\n", tagger);
5807 		datestr = get_datestr(&tagger_time, datebuf);
5808 		if (datestr)
5809 			printf("date: %s UTC\n", datestr);
5810 		if (commit)
5811 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
5812 		else {
5813 			switch (got_object_tag_get_object_type(tag)) {
5814 			case GOT_OBJ_TYPE_BLOB:
5815 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
5816 				    id_str);
5817 				break;
5818 			case GOT_OBJ_TYPE_TREE:
5819 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
5820 				    id_str);
5821 				break;
5822 			case GOT_OBJ_TYPE_COMMIT:
5823 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
5824 				    id_str);
5825 				break;
5826 			case GOT_OBJ_TYPE_TAG:
5827 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
5828 				    id_str);
5829 				break;
5830 			default:
5831 				break;
5832 			}
5833 		}
5834 		free(id_str);
5835 		if (commit) {
5836 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
5837 			if (err)
5838 				break;
5839 			got_object_commit_close(commit);
5840 		} else {
5841 			tagmsg0 = strdup(got_object_tag_get_message(tag));
5842 			got_object_tag_close(tag);
5843 			if (tagmsg0 == NULL) {
5844 				err = got_error_from_errno("strdup");
5845 				break;
5846 			}
5847 		}
5848 
5849 		tagmsg = tagmsg0;
5850 		do {
5851 			line = strsep(&tagmsg, "\n");
5852 			if (line)
5853 				printf(" %s\n", line);
5854 		} while (line);
5855 		free(tagmsg0);
5856 	}
5857 
5858 	got_ref_list_free(&refs);
5859 	return NULL;
5860 }
5861 
5862 static const struct got_error *
5863 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
5864     const char *tag_name, const char *repo_path)
5865 {
5866 	const struct got_error *err = NULL;
5867 	char *template = NULL, *initial_content = NULL;
5868 	char *editor = NULL;
5869 	int initial_content_len;
5870 	int fd = -1;
5871 
5872 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
5873 		err = got_error_from_errno("asprintf");
5874 		goto done;
5875 	}
5876 
5877 	initial_content_len = asprintf(&initial_content,
5878 	    "\n# tagging commit %s as %s\n",
5879 	    commit_id_str, tag_name);
5880 	if (initial_content_len == -1) {
5881 		err = got_error_from_errno("asprintf");
5882 		goto done;
5883 	}
5884 
5885 	err = got_opentemp_named_fd(tagmsg_path, &fd, template);
5886 	if (err)
5887 		goto done;
5888 
5889 	if (write(fd, initial_content, initial_content_len) == -1) {
5890 		err = got_error_from_errno2("write", *tagmsg_path);
5891 		goto done;
5892 	}
5893 
5894 	err = get_editor(&editor);
5895 	if (err)
5896 		goto done;
5897 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
5898 	    initial_content_len);
5899 done:
5900 	free(initial_content);
5901 	free(template);
5902 	free(editor);
5903 
5904 	if (fd != -1 && close(fd) == -1 && err == NULL)
5905 		err = got_error_from_errno2("close", *tagmsg_path);
5906 
5907 	/* Editor is done; we can now apply unveil(2) */
5908 	if (err == NULL)
5909 		err = apply_unveil(repo_path, 0, NULL);
5910 	if (err) {
5911 		free(*tagmsg);
5912 		*tagmsg = NULL;
5913 	}
5914 	return err;
5915 }
5916 
5917 static const struct got_error *
5918 add_tag(struct got_repository *repo, struct got_worktree *worktree,
5919     const char *tag_name, const char *commit_arg, const char *tagmsg_arg)
5920 {
5921 	const struct got_error *err = NULL;
5922 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
5923 	char *label = NULL, *commit_id_str = NULL;
5924 	struct got_reference *ref = NULL;
5925 	char *refname = NULL, *tagmsg = NULL, *tagger = NULL;
5926 	char *tagmsg_path = NULL, *tag_id_str = NULL;
5927 	int preserve_tagmsg = 0;
5928 
5929 	/*
5930 	 * Don't let the user create a tag name with a leading '-'.
5931 	 * While technically a valid reference name, this case is usually
5932 	 * an unintended typo.
5933 	 */
5934 	if (tag_name[0] == '-')
5935 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
5936 
5937 	err = get_author(&tagger, repo, worktree);
5938 	if (err)
5939 		return err;
5940 
5941 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
5942 	    GOT_OBJ_TYPE_COMMIT, 1, repo);
5943 	if (err)
5944 		goto done;
5945 
5946 	err = got_object_id_str(&commit_id_str, commit_id);
5947 	if (err)
5948 		goto done;
5949 
5950 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
5951 		refname = strdup(tag_name);
5952 		if (refname == NULL) {
5953 			err = got_error_from_errno("strdup");
5954 			goto done;
5955 		}
5956 		tag_name += 10;
5957 	} else if (asprintf(&refname, "refs/tags/%s", tag_name) == -1) {
5958 		err = got_error_from_errno("asprintf");
5959 		goto done;
5960 	}
5961 
5962 	err = got_ref_open(&ref, repo, refname, 0);
5963 	if (err == NULL) {
5964 		err = got_error(GOT_ERR_TAG_EXISTS);
5965 		goto done;
5966 	} else if (err->code != GOT_ERR_NOT_REF)
5967 		goto done;
5968 
5969 	if (tagmsg_arg == NULL) {
5970 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
5971 		    tag_name, got_repo_get_path(repo));
5972 		if (err) {
5973 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
5974 			    tagmsg_path != NULL)
5975 				preserve_tagmsg = 1;
5976 			goto done;
5977 		}
5978 	}
5979 
5980 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
5981 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, repo);
5982 	if (err) {
5983 		if (tagmsg_path)
5984 			preserve_tagmsg = 1;
5985 		goto done;
5986 	}
5987 
5988 	err = got_ref_alloc(&ref, refname, tag_id);
5989 	if (err) {
5990 		if (tagmsg_path)
5991 			preserve_tagmsg = 1;
5992 		goto done;
5993 	}
5994 
5995 	err = got_ref_write(ref, repo);
5996 	if (err) {
5997 		if (tagmsg_path)
5998 			preserve_tagmsg = 1;
5999 		goto done;
6000 	}
6001 
6002 	err = got_object_id_str(&tag_id_str, tag_id);
6003 	if (err) {
6004 		if (tagmsg_path)
6005 			preserve_tagmsg = 1;
6006 		goto done;
6007 	}
6008 	printf("Created tag %s\n", tag_id_str);
6009 done:
6010 	if (preserve_tagmsg) {
6011 		fprintf(stderr, "%s: tag message preserved in %s\n",
6012 		    getprogname(), tagmsg_path);
6013 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
6014 		err = got_error_from_errno2("unlink", tagmsg_path);
6015 	free(tag_id_str);
6016 	if (ref)
6017 		got_ref_close(ref);
6018 	free(commit_id);
6019 	free(commit_id_str);
6020 	free(refname);
6021 	free(tagmsg);
6022 	free(tagmsg_path);
6023 	free(tagger);
6024 	return err;
6025 }
6026 
6027 static const struct got_error *
6028 cmd_tag(int argc, char *argv[])
6029 {
6030 	const struct got_error *error = NULL;
6031 	struct got_repository *repo = NULL;
6032 	struct got_worktree *worktree = NULL;
6033 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
6034 	char *gitconfig_path = NULL;
6035 	const char *tag_name, *commit_id_arg = NULL, *tagmsg = NULL;
6036 	int ch, do_list = 0;
6037 
6038 	while ((ch = getopt(argc, argv, "c:m:r:l")) != -1) {
6039 		switch (ch) {
6040 		case 'c':
6041 			commit_id_arg = optarg;
6042 			break;
6043 		case 'm':
6044 			tagmsg = optarg;
6045 			break;
6046 		case 'r':
6047 			repo_path = realpath(optarg, NULL);
6048 			if (repo_path == NULL)
6049 				return got_error_from_errno2("realpath",
6050 				    optarg);
6051 			got_path_strip_trailing_slashes(repo_path);
6052 			break;
6053 		case 'l':
6054 			do_list = 1;
6055 			break;
6056 		default:
6057 			usage_tag();
6058 			/* NOTREACHED */
6059 		}
6060 	}
6061 
6062 	argc -= optind;
6063 	argv += optind;
6064 
6065 	if (do_list) {
6066 		if (commit_id_arg != NULL)
6067 			errx(1,
6068 			    "-c option can only be used when creating a tag");
6069 		if (tagmsg)
6070 			errx(1, "-l and -m options are mutually exclusive");
6071 		if (argc > 0)
6072 			usage_tag();
6073 	} else if (argc != 1)
6074 		usage_tag();
6075 
6076 	tag_name = argv[0];
6077 
6078 #ifndef PROFILE
6079 	if (do_list) {
6080 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6081 		    NULL) == -1)
6082 			err(1, "pledge");
6083 	} else {
6084 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6085 		    "sendfd unveil", NULL) == -1)
6086 			err(1, "pledge");
6087 	}
6088 #endif
6089 	cwd = getcwd(NULL, 0);
6090 	if (cwd == NULL) {
6091 		error = got_error_from_errno("getcwd");
6092 		goto done;
6093 	}
6094 
6095 	if (repo_path == NULL) {
6096 		error = got_worktree_open(&worktree, cwd);
6097 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6098 			goto done;
6099 		else
6100 			error = NULL;
6101 		if (worktree) {
6102 			repo_path =
6103 			    strdup(got_worktree_get_repo_path(worktree));
6104 			if (repo_path == NULL)
6105 				error = got_error_from_errno("strdup");
6106 			if (error)
6107 				goto done;
6108 		} else {
6109 			repo_path = strdup(cwd);
6110 			if (repo_path == NULL) {
6111 				error = got_error_from_errno("strdup");
6112 				goto done;
6113 			}
6114 		}
6115 	}
6116 
6117 	if (do_list) {
6118 		error = got_repo_open(&repo, repo_path, NULL);
6119 		if (error != NULL)
6120 			goto done;
6121 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6122 		if (error)
6123 			goto done;
6124 		error = list_tags(repo, worktree);
6125 	} else {
6126 		error = get_gitconfig_path(&gitconfig_path);
6127 		if (error)
6128 			goto done;
6129 		error = got_repo_open(&repo, repo_path, gitconfig_path);
6130 		if (error != NULL)
6131 			goto done;
6132 
6133 		if (tagmsg) {
6134 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
6135 			if (error)
6136 				goto done;
6137 		}
6138 
6139 		if (commit_id_arg == NULL) {
6140 			struct got_reference *head_ref;
6141 			struct got_object_id *commit_id;
6142 			error = got_ref_open(&head_ref, repo,
6143 			    worktree ? got_worktree_get_head_ref_name(worktree)
6144 			    : GOT_REF_HEAD, 0);
6145 			if (error)
6146 				goto done;
6147 			error = got_ref_resolve(&commit_id, repo, head_ref);
6148 			got_ref_close(head_ref);
6149 			if (error)
6150 				goto done;
6151 			error = got_object_id_str(&commit_id_str, commit_id);
6152 			free(commit_id);
6153 			if (error)
6154 				goto done;
6155 		}
6156 
6157 		error = add_tag(repo, worktree, tag_name,
6158 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg);
6159 	}
6160 done:
6161 	if (repo)
6162 		got_repo_close(repo);
6163 	if (worktree)
6164 		got_worktree_close(worktree);
6165 	free(cwd);
6166 	free(repo_path);
6167 	free(gitconfig_path);
6168 	free(commit_id_str);
6169 	return error;
6170 }
6171 
6172 __dead static void
6173 usage_add(void)
6174 {
6175 	fprintf(stderr, "usage: %s add [-R] [-I] path ...\n",
6176 	    getprogname());
6177 	exit(1);
6178 }
6179 
6180 static const struct got_error *
6181 add_progress(void *arg, unsigned char status, const char *path)
6182 {
6183 	while (path[0] == '/')
6184 		path++;
6185 	printf("%c  %s\n", status, path);
6186 	return NULL;
6187 }
6188 
6189 static const struct got_error *
6190 cmd_add(int argc, char *argv[])
6191 {
6192 	const struct got_error *error = NULL;
6193 	struct got_repository *repo = NULL;
6194 	struct got_worktree *worktree = NULL;
6195 	char *cwd = NULL;
6196 	struct got_pathlist_head paths;
6197 	struct got_pathlist_entry *pe;
6198 	int ch, can_recurse = 0, no_ignores = 0;
6199 
6200 	TAILQ_INIT(&paths);
6201 
6202 	while ((ch = getopt(argc, argv, "IR")) != -1) {
6203 		switch (ch) {
6204 		case 'I':
6205 			no_ignores = 1;
6206 			break;
6207 		case 'R':
6208 			can_recurse = 1;
6209 			break;
6210 		default:
6211 			usage_add();
6212 			/* NOTREACHED */
6213 		}
6214 	}
6215 
6216 	argc -= optind;
6217 	argv += optind;
6218 
6219 #ifndef PROFILE
6220 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6221 	    NULL) == -1)
6222 		err(1, "pledge");
6223 #endif
6224 	if (argc < 1)
6225 		usage_add();
6226 
6227 	cwd = getcwd(NULL, 0);
6228 	if (cwd == NULL) {
6229 		error = got_error_from_errno("getcwd");
6230 		goto done;
6231 	}
6232 
6233 	error = got_worktree_open(&worktree, cwd);
6234 	if (error) {
6235 		if (error->code == GOT_ERR_NOT_WORKTREE)
6236 			error = wrap_not_worktree_error(error, "add", cwd);
6237 		goto done;
6238 	}
6239 
6240 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6241 	    NULL);
6242 	if (error != NULL)
6243 		goto done;
6244 
6245 	error = apply_unveil(got_repo_get_path(repo), 1,
6246 	    got_worktree_get_root_path(worktree));
6247 	if (error)
6248 		goto done;
6249 
6250 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6251 	if (error)
6252 		goto done;
6253 
6254 	if (!can_recurse && no_ignores) {
6255 		error = got_error_msg(GOT_ERR_BAD_PATH,
6256 		    "disregarding ignores requires -R option");
6257 		goto done;
6258 
6259 	}
6260 
6261 	if (!can_recurse) {
6262 		char *ondisk_path;
6263 		struct stat sb;
6264 		TAILQ_FOREACH(pe, &paths, entry) {
6265 			if (asprintf(&ondisk_path, "%s/%s",
6266 			    got_worktree_get_root_path(worktree),
6267 			    pe->path) == -1) {
6268 				error = got_error_from_errno("asprintf");
6269 				goto done;
6270 			}
6271 			if (lstat(ondisk_path, &sb) == -1) {
6272 				if (errno == ENOENT) {
6273 					free(ondisk_path);
6274 					continue;
6275 				}
6276 				error = got_error_from_errno2("lstat",
6277 				    ondisk_path);
6278 				free(ondisk_path);
6279 				goto done;
6280 			}
6281 			free(ondisk_path);
6282 			if (S_ISDIR(sb.st_mode)) {
6283 				error = got_error_msg(GOT_ERR_BAD_PATH,
6284 				    "adding directories requires -R option");
6285 				goto done;
6286 			}
6287 		}
6288 	}
6289 
6290 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
6291 	    NULL, repo, no_ignores);
6292 done:
6293 	if (repo)
6294 		got_repo_close(repo);
6295 	if (worktree)
6296 		got_worktree_close(worktree);
6297 	TAILQ_FOREACH(pe, &paths, entry)
6298 		free((char *)pe->path);
6299 	got_pathlist_free(&paths);
6300 	free(cwd);
6301 	return error;
6302 }
6303 
6304 __dead static void
6305 usage_remove(void)
6306 {
6307 	fprintf(stderr, "usage: %s remove [-f] [-k] [-R] [-s status-codes] "
6308 	    "path ...\n", getprogname());
6309 	exit(1);
6310 }
6311 
6312 static const struct got_error *
6313 print_remove_status(void *arg, unsigned char status,
6314     unsigned char staged_status, const char *path)
6315 {
6316 	while (path[0] == '/')
6317 		path++;
6318 	if (status == GOT_STATUS_NONEXISTENT)
6319 		return NULL;
6320 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6321 		status = GOT_STATUS_NO_CHANGE;
6322 	printf("%c%c %s\n", status, staged_status, path);
6323 	return NULL;
6324 }
6325 
6326 static const struct got_error *
6327 cmd_remove(int argc, char *argv[])
6328 {
6329 	const struct got_error *error = NULL;
6330 	struct got_worktree *worktree = NULL;
6331 	struct got_repository *repo = NULL;
6332 	const char *status_codes = NULL;
6333 	char *cwd = NULL;
6334 	struct got_pathlist_head paths;
6335 	struct got_pathlist_entry *pe;
6336 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
6337 
6338 	TAILQ_INIT(&paths);
6339 
6340 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
6341 		switch (ch) {
6342 		case 'f':
6343 			delete_local_mods = 1;
6344 			break;
6345 		case 'k':
6346 			keep_on_disk = 1;
6347 			break;
6348 		case 'R':
6349 			can_recurse = 1;
6350 			break;
6351 		case 's':
6352 			for (i = 0; i < strlen(optarg); i++) {
6353 				switch (optarg[i]) {
6354 				case GOT_STATUS_MODIFY:
6355 					delete_local_mods = 1;
6356 					break;
6357 				case GOT_STATUS_MISSING:
6358 					break;
6359 				default:
6360 					errx(1, "invalid status code '%c'",
6361 					    optarg[i]);
6362 				}
6363 			}
6364 			status_codes = optarg;
6365 			break;
6366 		default:
6367 			usage_remove();
6368 			/* NOTREACHED */
6369 		}
6370 	}
6371 
6372 	argc -= optind;
6373 	argv += optind;
6374 
6375 #ifndef PROFILE
6376 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6377 	    NULL) == -1)
6378 		err(1, "pledge");
6379 #endif
6380 	if (argc < 1)
6381 		usage_remove();
6382 
6383 	cwd = getcwd(NULL, 0);
6384 	if (cwd == NULL) {
6385 		error = got_error_from_errno("getcwd");
6386 		goto done;
6387 	}
6388 	error = got_worktree_open(&worktree, cwd);
6389 	if (error) {
6390 		if (error->code == GOT_ERR_NOT_WORKTREE)
6391 			error = wrap_not_worktree_error(error, "remove", cwd);
6392 		goto done;
6393 	}
6394 
6395 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6396 	    NULL);
6397 	if (error)
6398 		goto done;
6399 
6400 	error = apply_unveil(got_repo_get_path(repo), 1,
6401 	    got_worktree_get_root_path(worktree));
6402 	if (error)
6403 		goto done;
6404 
6405 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6406 	if (error)
6407 		goto done;
6408 
6409 	if (!can_recurse) {
6410 		char *ondisk_path;
6411 		struct stat sb;
6412 		TAILQ_FOREACH(pe, &paths, entry) {
6413 			if (asprintf(&ondisk_path, "%s/%s",
6414 			    got_worktree_get_root_path(worktree),
6415 			    pe->path) == -1) {
6416 				error = got_error_from_errno("asprintf");
6417 				goto done;
6418 			}
6419 			if (lstat(ondisk_path, &sb) == -1) {
6420 				if (errno == ENOENT) {
6421 					free(ondisk_path);
6422 					continue;
6423 				}
6424 				error = got_error_from_errno2("lstat",
6425 				    ondisk_path);
6426 				free(ondisk_path);
6427 				goto done;
6428 			}
6429 			free(ondisk_path);
6430 			if (S_ISDIR(sb.st_mode)) {
6431 				error = got_error_msg(GOT_ERR_BAD_PATH,
6432 				    "removing directories requires -R option");
6433 				goto done;
6434 			}
6435 		}
6436 	}
6437 
6438 	error = got_worktree_schedule_delete(worktree, &paths,
6439 	    delete_local_mods, status_codes, print_remove_status, NULL,
6440 	    repo, keep_on_disk);
6441 done:
6442 	if (repo)
6443 		got_repo_close(repo);
6444 	if (worktree)
6445 		got_worktree_close(worktree);
6446 	TAILQ_FOREACH(pe, &paths, entry)
6447 		free((char *)pe->path);
6448 	got_pathlist_free(&paths);
6449 	free(cwd);
6450 	return error;
6451 }
6452 
6453 __dead static void
6454 usage_revert(void)
6455 {
6456 	fprintf(stderr, "usage: %s revert [-p] [-F response-script] [-R] "
6457 	    "path ...\n", getprogname());
6458 	exit(1);
6459 }
6460 
6461 static const struct got_error *
6462 revert_progress(void *arg, unsigned char status, const char *path)
6463 {
6464 	if (status == GOT_STATUS_UNVERSIONED)
6465 		return NULL;
6466 
6467 	while (path[0] == '/')
6468 		path++;
6469 	printf("%c  %s\n", status, path);
6470 	return NULL;
6471 }
6472 
6473 struct choose_patch_arg {
6474 	FILE *patch_script_file;
6475 	const char *action;
6476 };
6477 
6478 static const struct got_error *
6479 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
6480     int nchanges, const char *action)
6481 {
6482 	char *line = NULL;
6483 	size_t linesize = 0;
6484 	ssize_t linelen;
6485 
6486 	switch (status) {
6487 	case GOT_STATUS_ADD:
6488 		printf("A  %s\n%s this addition? [y/n] ", path, action);
6489 		break;
6490 	case GOT_STATUS_DELETE:
6491 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
6492 		break;
6493 	case GOT_STATUS_MODIFY:
6494 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
6495 			return got_error_from_errno("fseek");
6496 		printf(GOT_COMMIT_SEP_STR);
6497 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
6498 			printf("%s", line);
6499 		if (ferror(patch_file))
6500 			return got_error_from_errno("getline");
6501 		printf(GOT_COMMIT_SEP_STR);
6502 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
6503 		    path, n, nchanges, action);
6504 		break;
6505 	default:
6506 		return got_error_path(path, GOT_ERR_FILE_STATUS);
6507 	}
6508 
6509 	return NULL;
6510 }
6511 
6512 static const struct got_error *
6513 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
6514     FILE *patch_file, int n, int nchanges)
6515 {
6516 	const struct got_error *err = NULL;
6517 	char *line = NULL;
6518 	size_t linesize = 0;
6519 	ssize_t linelen;
6520 	int resp = ' ';
6521 	struct choose_patch_arg *a = arg;
6522 
6523 	*choice = GOT_PATCH_CHOICE_NONE;
6524 
6525 	if (a->patch_script_file) {
6526 		char *nl;
6527 		err = show_change(status, path, patch_file, n, nchanges,
6528 		    a->action);
6529 		if (err)
6530 			return err;
6531 		linelen = getline(&line, &linesize, a->patch_script_file);
6532 		if (linelen == -1) {
6533 			if (ferror(a->patch_script_file))
6534 				return got_error_from_errno("getline");
6535 			return NULL;
6536 		}
6537 		nl = strchr(line, '\n');
6538 		if (nl)
6539 			*nl = '\0';
6540 		if (strcmp(line, "y") == 0) {
6541 			*choice = GOT_PATCH_CHOICE_YES;
6542 			printf("y\n");
6543 		} else if (strcmp(line, "n") == 0) {
6544 			*choice = GOT_PATCH_CHOICE_NO;
6545 			printf("n\n");
6546 		} else if (strcmp(line, "q") == 0 &&
6547 		    status == GOT_STATUS_MODIFY) {
6548 			*choice = GOT_PATCH_CHOICE_QUIT;
6549 			printf("q\n");
6550 		} else
6551 			printf("invalid response '%s'\n", line);
6552 		free(line);
6553 		return NULL;
6554 	}
6555 
6556 	while (resp != 'y' && resp != 'n' && resp != 'q') {
6557 		err = show_change(status, path, patch_file, n, nchanges,
6558 		    a->action);
6559 		if (err)
6560 			return err;
6561 		resp = getchar();
6562 		if (resp == '\n')
6563 			resp = getchar();
6564 		if (status == GOT_STATUS_MODIFY) {
6565 			if (resp != 'y' && resp != 'n' && resp != 'q') {
6566 				printf("invalid response '%c'\n", resp);
6567 				resp = ' ';
6568 			}
6569 		} else if (resp != 'y' && resp != 'n') {
6570 				printf("invalid response '%c'\n", resp);
6571 				resp = ' ';
6572 		}
6573 	}
6574 
6575 	if (resp == 'y')
6576 		*choice = GOT_PATCH_CHOICE_YES;
6577 	else if (resp == 'n')
6578 		*choice = GOT_PATCH_CHOICE_NO;
6579 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
6580 		*choice = GOT_PATCH_CHOICE_QUIT;
6581 
6582 	return NULL;
6583 }
6584 
6585 
6586 static const struct got_error *
6587 cmd_revert(int argc, char *argv[])
6588 {
6589 	const struct got_error *error = NULL;
6590 	struct got_worktree *worktree = NULL;
6591 	struct got_repository *repo = NULL;
6592 	char *cwd = NULL, *path = NULL;
6593 	struct got_pathlist_head paths;
6594 	struct got_pathlist_entry *pe;
6595 	int ch, can_recurse = 0, pflag = 0;
6596 	FILE *patch_script_file = NULL;
6597 	const char *patch_script_path = NULL;
6598 	struct choose_patch_arg cpa;
6599 
6600 	TAILQ_INIT(&paths);
6601 
6602 	while ((ch = getopt(argc, argv, "pF:R")) != -1) {
6603 		switch (ch) {
6604 		case 'p':
6605 			pflag = 1;
6606 			break;
6607 		case 'F':
6608 			patch_script_path = optarg;
6609 			break;
6610 		case 'R':
6611 			can_recurse = 1;
6612 			break;
6613 		default:
6614 			usage_revert();
6615 			/* NOTREACHED */
6616 		}
6617 	}
6618 
6619 	argc -= optind;
6620 	argv += optind;
6621 
6622 #ifndef PROFILE
6623 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
6624 	    "unveil", NULL) == -1)
6625 		err(1, "pledge");
6626 #endif
6627 	if (argc < 1)
6628 		usage_revert();
6629 	if (patch_script_path && !pflag)
6630 		errx(1, "-F option can only be used together with -p option");
6631 
6632 	cwd = getcwd(NULL, 0);
6633 	if (cwd == NULL) {
6634 		error = got_error_from_errno("getcwd");
6635 		goto done;
6636 	}
6637 	error = got_worktree_open(&worktree, cwd);
6638 	if (error) {
6639 		if (error->code == GOT_ERR_NOT_WORKTREE)
6640 			error = wrap_not_worktree_error(error, "revert", cwd);
6641 		goto done;
6642 	}
6643 
6644 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6645 	    NULL);
6646 	if (error != NULL)
6647 		goto done;
6648 
6649 	if (patch_script_path) {
6650 		patch_script_file = fopen(patch_script_path, "r");
6651 		if (patch_script_file == NULL) {
6652 			error = got_error_from_errno2("fopen",
6653 			    patch_script_path);
6654 			goto done;
6655 		}
6656 	}
6657 	error = apply_unveil(got_repo_get_path(repo), 1,
6658 	    got_worktree_get_root_path(worktree));
6659 	if (error)
6660 		goto done;
6661 
6662 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6663 	if (error)
6664 		goto done;
6665 
6666 	if (!can_recurse) {
6667 		char *ondisk_path;
6668 		struct stat sb;
6669 		TAILQ_FOREACH(pe, &paths, entry) {
6670 			if (asprintf(&ondisk_path, "%s/%s",
6671 			    got_worktree_get_root_path(worktree),
6672 			    pe->path) == -1) {
6673 				error = got_error_from_errno("asprintf");
6674 				goto done;
6675 			}
6676 			if (lstat(ondisk_path, &sb) == -1) {
6677 				if (errno == ENOENT) {
6678 					free(ondisk_path);
6679 					continue;
6680 				}
6681 				error = got_error_from_errno2("lstat",
6682 				    ondisk_path);
6683 				free(ondisk_path);
6684 				goto done;
6685 			}
6686 			free(ondisk_path);
6687 			if (S_ISDIR(sb.st_mode)) {
6688 				error = got_error_msg(GOT_ERR_BAD_PATH,
6689 				    "reverting directories requires -R option");
6690 				goto done;
6691 			}
6692 		}
6693 	}
6694 
6695 	cpa.patch_script_file = patch_script_file;
6696 	cpa.action = "revert";
6697 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
6698 	    pflag ? choose_patch : NULL, &cpa, repo);
6699 done:
6700 	if (patch_script_file && fclose(patch_script_file) == EOF &&
6701 	    error == NULL)
6702 		error = got_error_from_errno2("fclose", patch_script_path);
6703 	if (repo)
6704 		got_repo_close(repo);
6705 	if (worktree)
6706 		got_worktree_close(worktree);
6707 	free(path);
6708 	free(cwd);
6709 	return error;
6710 }
6711 
6712 __dead static void
6713 usage_commit(void)
6714 {
6715 	fprintf(stderr, "usage: %s commit [-m msg] [-S] [path ...]\n",
6716 	    getprogname());
6717 	exit(1);
6718 }
6719 
6720 struct collect_commit_logmsg_arg {
6721 	const char *cmdline_log;
6722 	const char *editor;
6723 	const char *worktree_path;
6724 	const char *branch_name;
6725 	const char *repo_path;
6726 	char *logmsg_path;
6727 
6728 };
6729 
6730 static const struct got_error *
6731 collect_commit_logmsg(struct got_pathlist_head *commitable_paths, char **logmsg,
6732     void *arg)
6733 {
6734 	char *initial_content = NULL;
6735 	struct got_pathlist_entry *pe;
6736 	const struct got_error *err = NULL;
6737 	char *template = NULL;
6738 	struct collect_commit_logmsg_arg *a = arg;
6739 	int initial_content_len;
6740 	int fd = -1;
6741 	size_t len;
6742 
6743 	/* if a message was specified on the command line, just use it */
6744 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
6745 		len = strlen(a->cmdline_log) + 1;
6746 		*logmsg = malloc(len + 1);
6747 		if (*logmsg == NULL)
6748 			return got_error_from_errno("malloc");
6749 		strlcpy(*logmsg, a->cmdline_log, len);
6750 		return NULL;
6751 	}
6752 
6753 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
6754 		return got_error_from_errno("asprintf");
6755 
6756 	initial_content_len = asprintf(&initial_content,
6757 	    "\n# changes to be committed on branch %s:\n",
6758 	    a->branch_name);
6759 	if (initial_content_len == -1)
6760 		return got_error_from_errno("asprintf");
6761 
6762 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template);
6763 	if (err)
6764 		goto done;
6765 
6766 	if (write(fd, initial_content, initial_content_len) == -1) {
6767 		err = got_error_from_errno2("write", a->logmsg_path);
6768 		goto done;
6769 	}
6770 
6771 	TAILQ_FOREACH(pe, commitable_paths, entry) {
6772 		struct got_commitable *ct = pe->data;
6773 		dprintf(fd, "#  %c  %s\n",
6774 		    got_commitable_get_status(ct),
6775 		    got_commitable_get_path(ct));
6776 	}
6777 
6778 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
6779 	    initial_content_len);
6780 done:
6781 	free(initial_content);
6782 	free(template);
6783 
6784 	if (fd != -1 && close(fd) == -1 && err == NULL)
6785 		err = got_error_from_errno2("close", a->logmsg_path);
6786 
6787 	/* Editor is done; we can now apply unveil(2) */
6788 	if (err == NULL)
6789 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
6790 	if (err) {
6791 		free(*logmsg);
6792 		*logmsg = NULL;
6793 	}
6794 	return err;
6795 }
6796 
6797 static const struct got_error *
6798 cmd_commit(int argc, char *argv[])
6799 {
6800 	const struct got_error *error = NULL;
6801 	struct got_worktree *worktree = NULL;
6802 	struct got_repository *repo = NULL;
6803 	char *cwd = NULL, *id_str = NULL;
6804 	struct got_object_id *id = NULL;
6805 	const char *logmsg = NULL;
6806 	struct collect_commit_logmsg_arg cl_arg;
6807 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
6808 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
6809 	int allow_bad_symlinks = 0;
6810 	struct got_pathlist_head paths;
6811 
6812 	TAILQ_INIT(&paths);
6813 	cl_arg.logmsg_path = NULL;
6814 
6815 	while ((ch = getopt(argc, argv, "m:S")) != -1) {
6816 		switch (ch) {
6817 		case 'm':
6818 			logmsg = optarg;
6819 			break;
6820 		case 'S':
6821 			allow_bad_symlinks = 1;
6822 			break;
6823 		default:
6824 			usage_commit();
6825 			/* NOTREACHED */
6826 		}
6827 	}
6828 
6829 	argc -= optind;
6830 	argv += optind;
6831 
6832 #ifndef PROFILE
6833 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
6834 	    "unveil", NULL) == -1)
6835 		err(1, "pledge");
6836 #endif
6837 	cwd = getcwd(NULL, 0);
6838 	if (cwd == NULL) {
6839 		error = got_error_from_errno("getcwd");
6840 		goto done;
6841 	}
6842 	error = got_worktree_open(&worktree, cwd);
6843 	if (error) {
6844 		if (error->code == GOT_ERR_NOT_WORKTREE)
6845 			error = wrap_not_worktree_error(error, "commit", cwd);
6846 		goto done;
6847 	}
6848 
6849 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
6850 	if (error)
6851 		goto done;
6852 	if (rebase_in_progress) {
6853 		error = got_error(GOT_ERR_REBASING);
6854 		goto done;
6855 	}
6856 
6857 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
6858 	    worktree);
6859 	if (error)
6860 		goto done;
6861 
6862 	error = get_gitconfig_path(&gitconfig_path);
6863 	if (error)
6864 		goto done;
6865 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6866 	    gitconfig_path);
6867 	if (error != NULL)
6868 		goto done;
6869 
6870 	error = get_author(&author, repo, worktree);
6871 	if (error)
6872 		return error;
6873 
6874 	/*
6875 	 * unveil(2) traverses exec(2); if an editor is used we have
6876 	 * to apply unveil after the log message has been written.
6877 	 */
6878 	if (logmsg == NULL || strlen(logmsg) == 0)
6879 		error = get_editor(&editor);
6880 	else
6881 		error = apply_unveil(got_repo_get_path(repo), 0,
6882 		    got_worktree_get_root_path(worktree));
6883 	if (error)
6884 		goto done;
6885 
6886 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6887 	if (error)
6888 		goto done;
6889 
6890 	cl_arg.editor = editor;
6891 	cl_arg.cmdline_log = logmsg;
6892 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
6893 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
6894 	if (!histedit_in_progress) {
6895 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
6896 			error = got_error(GOT_ERR_COMMIT_BRANCH);
6897 			goto done;
6898 		}
6899 		cl_arg.branch_name += 11;
6900 	}
6901 	cl_arg.repo_path = got_repo_get_path(repo);
6902 	error = got_worktree_commit(&id, worktree, &paths, author, NULL,
6903 	    allow_bad_symlinks, collect_commit_logmsg, &cl_arg,
6904 	    print_status, NULL, repo);
6905 	if (error) {
6906 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
6907 		    cl_arg.logmsg_path != NULL)
6908 			preserve_logmsg = 1;
6909 		goto done;
6910 	}
6911 
6912 	error = got_object_id_str(&id_str, id);
6913 	if (error)
6914 		goto done;
6915 	printf("Created commit %s\n", id_str);
6916 done:
6917 	if (preserve_logmsg) {
6918 		fprintf(stderr, "%s: log message preserved in %s\n",
6919 		    getprogname(), cl_arg.logmsg_path);
6920 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
6921 	    error == NULL)
6922 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
6923 	free(cl_arg.logmsg_path);
6924 	if (repo)
6925 		got_repo_close(repo);
6926 	if (worktree)
6927 		got_worktree_close(worktree);
6928 	free(cwd);
6929 	free(id_str);
6930 	free(gitconfig_path);
6931 	free(editor);
6932 	free(author);
6933 	return error;
6934 }
6935 
6936 __dead static void
6937 usage_cherrypick(void)
6938 {
6939 	fprintf(stderr, "usage: %s cherrypick commit-id\n", getprogname());
6940 	exit(1);
6941 }
6942 
6943 static const struct got_error *
6944 cmd_cherrypick(int argc, char *argv[])
6945 {
6946 	const struct got_error *error = NULL;
6947 	struct got_worktree *worktree = NULL;
6948 	struct got_repository *repo = NULL;
6949 	char *cwd = NULL, *commit_id_str = NULL;
6950 	struct got_object_id *commit_id = NULL;
6951 	struct got_commit_object *commit = NULL;
6952 	struct got_object_qid *pid;
6953 	struct got_reference *head_ref = NULL;
6954 	int ch;
6955 	struct got_update_progress_arg upa;
6956 
6957 	while ((ch = getopt(argc, argv, "")) != -1) {
6958 		switch (ch) {
6959 		default:
6960 			usage_cherrypick();
6961 			/* NOTREACHED */
6962 		}
6963 	}
6964 
6965 	argc -= optind;
6966 	argv += optind;
6967 
6968 #ifndef PROFILE
6969 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
6970 	    "unveil", NULL) == -1)
6971 		err(1, "pledge");
6972 #endif
6973 	if (argc != 1)
6974 		usage_cherrypick();
6975 
6976 	cwd = getcwd(NULL, 0);
6977 	if (cwd == NULL) {
6978 		error = got_error_from_errno("getcwd");
6979 		goto done;
6980 	}
6981 	error = got_worktree_open(&worktree, cwd);
6982 	if (error) {
6983 		if (error->code == GOT_ERR_NOT_WORKTREE)
6984 			error = wrap_not_worktree_error(error, "cherrypick",
6985 			    cwd);
6986 		goto done;
6987 	}
6988 
6989 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6990 	    NULL);
6991 	if (error != NULL)
6992 		goto done;
6993 
6994 	error = apply_unveil(got_repo_get_path(repo), 0,
6995 	    got_worktree_get_root_path(worktree));
6996 	if (error)
6997 		goto done;
6998 
6999 	error = got_repo_match_object_id_prefix(&commit_id, argv[0],
7000 	    GOT_OBJ_TYPE_COMMIT, repo);
7001 	if (error != NULL) {
7002 		struct got_reference *ref;
7003 		if (error->code != GOT_ERR_BAD_OBJ_ID_STR)
7004 			goto done;
7005 		error = got_ref_open(&ref, repo, argv[0], 0);
7006 		if (error != NULL)
7007 			goto done;
7008 		error = got_ref_resolve(&commit_id, repo, ref);
7009 		got_ref_close(ref);
7010 		if (error != NULL)
7011 			goto done;
7012 	}
7013 	error = got_object_id_str(&commit_id_str, commit_id);
7014 	if (error)
7015 		goto done;
7016 
7017 	error = got_ref_open(&head_ref, repo,
7018 	    got_worktree_get_head_ref_name(worktree), 0);
7019 	if (error != NULL)
7020 		goto done;
7021 
7022 	error = check_same_branch(commit_id, head_ref, NULL, repo);
7023 	if (error) {
7024 		if (error->code != GOT_ERR_ANCESTRY)
7025 			goto done;
7026 		error = NULL;
7027 	} else {
7028 		error = got_error(GOT_ERR_SAME_BRANCH);
7029 		goto done;
7030 	}
7031 
7032 	error = got_object_open_as_commit(&commit, repo, commit_id);
7033 	if (error)
7034 		goto done;
7035 	pid = SIMPLEQ_FIRST(got_object_commit_get_parent_ids(commit));
7036 	memset(&upa, 0, sizeof(upa));
7037 	error = got_worktree_merge_files(worktree, pid ? pid->id : NULL,
7038 	    commit_id, repo, update_progress, &upa, check_cancelled,
7039 	    NULL);
7040 	if (error != NULL)
7041 		goto done;
7042 
7043 	if (upa.did_something)
7044 		printf("Merged commit %s\n", commit_id_str);
7045 	print_update_progress_stats(&upa);
7046 done:
7047 	if (commit)
7048 		got_object_commit_close(commit);
7049 	free(commit_id_str);
7050 	if (head_ref)
7051 		got_ref_close(head_ref);
7052 	if (worktree)
7053 		got_worktree_close(worktree);
7054 	if (repo)
7055 		got_repo_close(repo);
7056 	return error;
7057 }
7058 
7059 __dead static void
7060 usage_backout(void)
7061 {
7062 	fprintf(stderr, "usage: %s backout commit-id\n", getprogname());
7063 	exit(1);
7064 }
7065 
7066 static const struct got_error *
7067 cmd_backout(int argc, char *argv[])
7068 {
7069 	const struct got_error *error = NULL;
7070 	struct got_worktree *worktree = NULL;
7071 	struct got_repository *repo = NULL;
7072 	char *cwd = NULL, *commit_id_str = NULL;
7073 	struct got_object_id *commit_id = NULL;
7074 	struct got_commit_object *commit = NULL;
7075 	struct got_object_qid *pid;
7076 	struct got_reference *head_ref = NULL;
7077 	int ch;
7078 	struct got_update_progress_arg upa;
7079 
7080 	while ((ch = getopt(argc, argv, "")) != -1) {
7081 		switch (ch) {
7082 		default:
7083 			usage_backout();
7084 			/* NOTREACHED */
7085 		}
7086 	}
7087 
7088 	argc -= optind;
7089 	argv += optind;
7090 
7091 #ifndef PROFILE
7092 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7093 	    "unveil", NULL) == -1)
7094 		err(1, "pledge");
7095 #endif
7096 	if (argc != 1)
7097 		usage_backout();
7098 
7099 	cwd = getcwd(NULL, 0);
7100 	if (cwd == NULL) {
7101 		error = got_error_from_errno("getcwd");
7102 		goto done;
7103 	}
7104 	error = got_worktree_open(&worktree, cwd);
7105 	if (error) {
7106 		if (error->code == GOT_ERR_NOT_WORKTREE)
7107 			error = wrap_not_worktree_error(error, "backout", cwd);
7108 		goto done;
7109 	}
7110 
7111 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7112 	    NULL);
7113 	if (error != NULL)
7114 		goto done;
7115 
7116 	error = apply_unveil(got_repo_get_path(repo), 0,
7117 	    got_worktree_get_root_path(worktree));
7118 	if (error)
7119 		goto done;
7120 
7121 	error = got_repo_match_object_id_prefix(&commit_id, argv[0],
7122 	    GOT_OBJ_TYPE_COMMIT, repo);
7123 	if (error != NULL) {
7124 		struct got_reference *ref;
7125 		if (error->code != GOT_ERR_BAD_OBJ_ID_STR)
7126 			goto done;
7127 		error = got_ref_open(&ref, repo, argv[0], 0);
7128 		if (error != NULL)
7129 			goto done;
7130 		error = got_ref_resolve(&commit_id, repo, ref);
7131 		got_ref_close(ref);
7132 		if (error != NULL)
7133 			goto done;
7134 	}
7135 	error = got_object_id_str(&commit_id_str, commit_id);
7136 	if (error)
7137 		goto done;
7138 
7139 	error = got_ref_open(&head_ref, repo,
7140 	    got_worktree_get_head_ref_name(worktree), 0);
7141 	if (error != NULL)
7142 		goto done;
7143 
7144 	error = check_same_branch(commit_id, head_ref, NULL, repo);
7145 	if (error)
7146 		goto done;
7147 
7148 	error = got_object_open_as_commit(&commit, repo, commit_id);
7149 	if (error)
7150 		goto done;
7151 	pid = SIMPLEQ_FIRST(got_object_commit_get_parent_ids(commit));
7152 	if (pid == NULL) {
7153 		error = got_error(GOT_ERR_ROOT_COMMIT);
7154 		goto done;
7155 	}
7156 
7157 	memset(&upa, 0, sizeof(upa));
7158 	error = got_worktree_merge_files(worktree, commit_id, pid->id, repo,
7159 	    update_progress, &upa, check_cancelled, NULL);
7160 	if (error != NULL)
7161 		goto done;
7162 
7163 	if (upa.did_something)
7164 		printf("Backed out commit %s\n", commit_id_str);
7165 	print_update_progress_stats(&upa);
7166 done:
7167 	if (commit)
7168 		got_object_commit_close(commit);
7169 	free(commit_id_str);
7170 	if (head_ref)
7171 		got_ref_close(head_ref);
7172 	if (worktree)
7173 		got_worktree_close(worktree);
7174 	if (repo)
7175 		got_repo_close(repo);
7176 	return error;
7177 }
7178 
7179 __dead static void
7180 usage_rebase(void)
7181 {
7182 	fprintf(stderr, "usage: %s rebase [-a] | [-c] | branch\n",
7183 	    getprogname());
7184 	exit(1);
7185 }
7186 
7187 void
7188 trim_logmsg(char *logmsg, int limit)
7189 {
7190 	char *nl;
7191 	size_t len;
7192 
7193 	len = strlen(logmsg);
7194 	if (len > limit)
7195 		len = limit;
7196 	logmsg[len] = '\0';
7197 	nl = strchr(logmsg, '\n');
7198 	if (nl)
7199 		*nl = '\0';
7200 }
7201 
7202 static const struct got_error *
7203 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
7204 {
7205 	const struct got_error *err;
7206 	char *logmsg0 = NULL;
7207 	const char *s;
7208 
7209 	err = got_object_commit_get_logmsg(&logmsg0, commit);
7210 	if (err)
7211 		return err;
7212 
7213 	s = logmsg0;
7214 	while (isspace((unsigned char)s[0]))
7215 		s++;
7216 
7217 	*logmsg = strdup(s);
7218 	if (*logmsg == NULL) {
7219 		err = got_error_from_errno("strdup");
7220 		goto done;
7221 	}
7222 
7223 	trim_logmsg(*logmsg, limit);
7224 done:
7225 	free(logmsg0);
7226 	return err;
7227 }
7228 
7229 static const struct got_error *
7230 show_rebase_merge_conflict(struct got_object_id *id, struct got_repository *repo)
7231 {
7232 	const struct got_error *err;
7233 	struct got_commit_object *commit = NULL;
7234 	char *id_str = NULL, *logmsg = NULL;
7235 
7236 	err = got_object_open_as_commit(&commit, repo, id);
7237 	if (err)
7238 		return err;
7239 
7240 	err = got_object_id_str(&id_str, id);
7241 	if (err)
7242 		goto done;
7243 
7244 	id_str[12] = '\0';
7245 
7246 	err = get_short_logmsg(&logmsg, 42, commit);
7247 	if (err)
7248 		goto done;
7249 
7250 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
7251 done:
7252 	free(id_str);
7253 	got_object_commit_close(commit);
7254 	free(logmsg);
7255 	return err;
7256 }
7257 
7258 static const struct got_error *
7259 show_rebase_progress(struct got_commit_object *commit,
7260     struct got_object_id *old_id, struct got_object_id *new_id)
7261 {
7262 	const struct got_error *err;
7263 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
7264 
7265 	err = got_object_id_str(&old_id_str, old_id);
7266 	if (err)
7267 		goto done;
7268 
7269 	if (new_id) {
7270 		err = got_object_id_str(&new_id_str, new_id);
7271 		if (err)
7272 			goto done;
7273 	}
7274 
7275 	old_id_str[12] = '\0';
7276 	if (new_id_str)
7277 		new_id_str[12] = '\0';
7278 
7279 	err = get_short_logmsg(&logmsg, 42, commit);
7280 	if (err)
7281 		goto done;
7282 
7283 	printf("%s -> %s: %s\n", old_id_str,
7284 	    new_id_str ? new_id_str : "no-op change", logmsg);
7285 done:
7286 	free(old_id_str);
7287 	free(new_id_str);
7288 	free(logmsg);
7289 	return err;
7290 }
7291 
7292 static const struct got_error *
7293 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
7294     struct got_reference *branch, struct got_reference *new_base_branch,
7295     struct got_reference *tmp_branch, struct got_repository *repo)
7296 {
7297 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
7298 	return got_worktree_rebase_complete(worktree, fileindex,
7299 	    new_base_branch, tmp_branch, branch, repo);
7300 }
7301 
7302 static const struct got_error *
7303 rebase_commit(struct got_pathlist_head *merged_paths,
7304     struct got_worktree *worktree, struct got_fileindex *fileindex,
7305     struct got_reference *tmp_branch,
7306     struct got_object_id *commit_id, struct got_repository *repo)
7307 {
7308 	const struct got_error *error;
7309 	struct got_commit_object *commit;
7310 	struct got_object_id *new_commit_id;
7311 
7312 	error = got_object_open_as_commit(&commit, repo, commit_id);
7313 	if (error)
7314 		return error;
7315 
7316 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
7317 	    worktree, fileindex, tmp_branch, commit, commit_id, repo);
7318 	if (error) {
7319 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
7320 			goto done;
7321 		error = show_rebase_progress(commit, commit_id, NULL);
7322 	} else {
7323 		error = show_rebase_progress(commit, commit_id, new_commit_id);
7324 		free(new_commit_id);
7325 	}
7326 done:
7327 	got_object_commit_close(commit);
7328 	return error;
7329 }
7330 
7331 struct check_path_prefix_arg {
7332 	const char *path_prefix;
7333 	size_t len;
7334 	int errcode;
7335 };
7336 
7337 static const struct got_error *
7338 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
7339     struct got_blob_object *blob2, struct got_object_id *id1,
7340     struct got_object_id *id2, const char *path1, const char *path2,
7341     mode_t mode1, mode_t mode2, struct got_repository *repo)
7342 {
7343 	struct check_path_prefix_arg *a = arg;
7344 
7345 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
7346 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
7347 		return got_error(a->errcode);
7348 
7349 	return NULL;
7350 }
7351 
7352 static const struct got_error *
7353 check_path_prefix(struct got_object_id *parent_id,
7354     struct got_object_id *commit_id, const char *path_prefix,
7355     int errcode, struct got_repository *repo)
7356 {
7357 	const struct got_error *err;
7358 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
7359 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
7360 	struct check_path_prefix_arg cpp_arg;
7361 
7362 	if (got_path_is_root_dir(path_prefix))
7363 		return NULL;
7364 
7365 	err = got_object_open_as_commit(&commit, repo, commit_id);
7366 	if (err)
7367 		goto done;
7368 
7369 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
7370 	if (err)
7371 		goto done;
7372 
7373 	err = got_object_open_as_tree(&tree1, repo,
7374 	    got_object_commit_get_tree_id(parent_commit));
7375 	if (err)
7376 		goto done;
7377 
7378 	err = got_object_open_as_tree(&tree2, repo,
7379 	    got_object_commit_get_tree_id(commit));
7380 	if (err)
7381 		goto done;
7382 
7383 	cpp_arg.path_prefix = path_prefix;
7384 	while (cpp_arg.path_prefix[0] == '/')
7385 		cpp_arg.path_prefix++;
7386 	cpp_arg.len = strlen(cpp_arg.path_prefix);
7387 	cpp_arg.errcode = errcode;
7388 	err = got_diff_tree(tree1, tree2, "", "", repo,
7389 	    check_path_prefix_in_diff, &cpp_arg, 0);
7390 done:
7391 	if (tree1)
7392 		got_object_tree_close(tree1);
7393 	if (tree2)
7394 		got_object_tree_close(tree2);
7395 	if (commit)
7396 		got_object_commit_close(commit);
7397 	if (parent_commit)
7398 		got_object_commit_close(parent_commit);
7399 	return err;
7400 }
7401 
7402 static const struct got_error *
7403 collect_commits(struct got_object_id_queue *commits,
7404     struct got_object_id *initial_commit_id,
7405     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
7406     const char *path_prefix, int path_prefix_errcode,
7407     struct got_repository *repo)
7408 {
7409 	const struct got_error *err = NULL;
7410 	struct got_commit_graph *graph = NULL;
7411 	struct got_object_id *parent_id = NULL;
7412 	struct got_object_qid *qid;
7413         struct got_object_id *commit_id = initial_commit_id;
7414 
7415 	err = got_commit_graph_open(&graph, "/", 1);
7416 	if (err)
7417 		return err;
7418 
7419 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
7420 	    check_cancelled, NULL);
7421 	if (err)
7422 		goto done;
7423 	while (got_object_id_cmp(commit_id, iter_stop_id) != 0) {
7424 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
7425 		    check_cancelled, NULL);
7426 		if (err) {
7427 			if (err->code == GOT_ERR_ITER_COMPLETED) {
7428 				err = got_error_msg(GOT_ERR_ANCESTRY,
7429 				    "ran out of commits to rebase before "
7430 				    "youngest common ancestor commit has "
7431 				    "been reached?!?");
7432 			}
7433 			goto done;
7434 		} else {
7435 			err = check_path_prefix(parent_id, commit_id,
7436 			    path_prefix, path_prefix_errcode, repo);
7437 			if (err)
7438 				goto done;
7439 
7440 			err = got_object_qid_alloc(&qid, commit_id);
7441 			if (err)
7442 				goto done;
7443 			SIMPLEQ_INSERT_HEAD(commits, qid, entry);
7444 			commit_id = parent_id;
7445 		}
7446 	}
7447 done:
7448 	got_commit_graph_close(graph);
7449 	return err;
7450 }
7451 
7452 static const struct got_error *
7453 cmd_rebase(int argc, char *argv[])
7454 {
7455 	const struct got_error *error = NULL;
7456 	struct got_worktree *worktree = NULL;
7457 	struct got_repository *repo = NULL;
7458 	struct got_fileindex *fileindex = NULL;
7459 	char *cwd = NULL;
7460 	struct got_reference *branch = NULL;
7461 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
7462 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
7463 	struct got_object_id *resume_commit_id = NULL;
7464 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
7465 	struct got_commit_object *commit = NULL;
7466 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
7467 	int histedit_in_progress = 0;
7468 	unsigned char rebase_status = GOT_STATUS_NO_CHANGE;
7469 	struct got_object_id_queue commits;
7470 	struct got_pathlist_head merged_paths;
7471 	const struct got_object_id_queue *parent_ids;
7472 	struct got_object_qid *qid, *pid;
7473 
7474 	SIMPLEQ_INIT(&commits);
7475 	TAILQ_INIT(&merged_paths);
7476 
7477 	while ((ch = getopt(argc, argv, "ac")) != -1) {
7478 		switch (ch) {
7479 		case 'a':
7480 			abort_rebase = 1;
7481 			break;
7482 		case 'c':
7483 			continue_rebase = 1;
7484 			break;
7485 		default:
7486 			usage_rebase();
7487 			/* NOTREACHED */
7488 		}
7489 	}
7490 
7491 	argc -= optind;
7492 	argv += optind;
7493 
7494 #ifndef PROFILE
7495 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7496 	    "unveil", NULL) == -1)
7497 		err(1, "pledge");
7498 #endif
7499 	if (abort_rebase && continue_rebase)
7500 		usage_rebase();
7501 	else if (abort_rebase || continue_rebase) {
7502 		if (argc != 0)
7503 			usage_rebase();
7504 	} else if (argc != 1)
7505 		usage_rebase();
7506 
7507 	cwd = getcwd(NULL, 0);
7508 	if (cwd == NULL) {
7509 		error = got_error_from_errno("getcwd");
7510 		goto done;
7511 	}
7512 	error = got_worktree_open(&worktree, cwd);
7513 	if (error) {
7514 		if (error->code == GOT_ERR_NOT_WORKTREE)
7515 			error = wrap_not_worktree_error(error, "rebase", cwd);
7516 		goto done;
7517 	}
7518 
7519 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7520 	    NULL);
7521 	if (error != NULL)
7522 		goto done;
7523 
7524 	error = apply_unveil(got_repo_get_path(repo), 0,
7525 	    got_worktree_get_root_path(worktree));
7526 	if (error)
7527 		goto done;
7528 
7529 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
7530 	    worktree);
7531 	if (error)
7532 		goto done;
7533 	if (histedit_in_progress) {
7534 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
7535 		goto done;
7536 	}
7537 
7538 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
7539 	if (error)
7540 		goto done;
7541 
7542 	if (abort_rebase) {
7543 		struct got_update_progress_arg upa;
7544 		if (!rebase_in_progress) {
7545 			error = got_error(GOT_ERR_NOT_REBASING);
7546 			goto done;
7547 		}
7548 		error = got_worktree_rebase_continue(&resume_commit_id,
7549 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
7550 		    worktree, repo);
7551 		if (error)
7552 			goto done;
7553 		printf("Switching work tree to %s\n",
7554 		    got_ref_get_symref_target(new_base_branch));
7555 		memset(&upa, 0, sizeof(upa));
7556 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
7557 		    new_base_branch, update_progress, &upa);
7558 		if (error)
7559 			goto done;
7560 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
7561 		print_update_progress_stats(&upa);
7562 		goto done; /* nothing else to do */
7563 	}
7564 
7565 	if (continue_rebase) {
7566 		if (!rebase_in_progress) {
7567 			error = got_error(GOT_ERR_NOT_REBASING);
7568 			goto done;
7569 		}
7570 		error = got_worktree_rebase_continue(&resume_commit_id,
7571 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
7572 		    worktree, repo);
7573 		if (error)
7574 			goto done;
7575 
7576 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
7577 		    resume_commit_id, repo);
7578 		if (error)
7579 			goto done;
7580 
7581 		yca_id = got_object_id_dup(resume_commit_id);
7582 		if (yca_id == NULL) {
7583 			error = got_error_from_errno("got_object_id_dup");
7584 			goto done;
7585 		}
7586 	} else {
7587 		error = got_ref_open(&branch, repo, argv[0], 0);
7588 		if (error != NULL)
7589 			goto done;
7590 	}
7591 
7592 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
7593 	if (error)
7594 		goto done;
7595 
7596 	if (!continue_rebase) {
7597 		struct got_object_id *base_commit_id;
7598 
7599 		base_commit_id = got_worktree_get_base_commit_id(worktree);
7600 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
7601 		    base_commit_id, branch_head_commit_id, repo,
7602 		    check_cancelled, NULL);
7603 		if (error)
7604 			goto done;
7605 		if (yca_id == NULL) {
7606 			error = got_error_msg(GOT_ERR_ANCESTRY,
7607 			    "specified branch shares no common ancestry "
7608 			    "with work tree's branch");
7609 			goto done;
7610 		}
7611 
7612 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
7613 		if (error) {
7614 			if (error->code != GOT_ERR_ANCESTRY)
7615 				goto done;
7616 			error = NULL;
7617 		} else {
7618 			error = got_error_msg(GOT_ERR_SAME_BRANCH,
7619 			    "specified branch resolves to a commit which "
7620 			    "is already contained in work tree's branch");
7621 			goto done;
7622 		}
7623 		error = got_worktree_rebase_prepare(&new_base_branch,
7624 		    &tmp_branch, &fileindex, worktree, branch, repo);
7625 		if (error)
7626 			goto done;
7627 	}
7628 
7629 	commit_id = branch_head_commit_id;
7630 	error = got_object_open_as_commit(&commit, repo, commit_id);
7631 	if (error)
7632 		goto done;
7633 
7634 	parent_ids = got_object_commit_get_parent_ids(commit);
7635 	pid = SIMPLEQ_FIRST(parent_ids);
7636 	if (pid == NULL) {
7637 		if (!continue_rebase) {
7638 			struct got_update_progress_arg upa;
7639 			memset(&upa, 0, sizeof(upa));
7640 			error = got_worktree_rebase_abort(worktree, fileindex,
7641 			    repo, new_base_branch, update_progress, &upa);
7642 			if (error)
7643 				goto done;
7644 			printf("Rebase of %s aborted\n",
7645 			    got_ref_get_name(branch));
7646 			print_update_progress_stats(&upa);
7647 
7648 		}
7649 		error = got_error(GOT_ERR_EMPTY_REBASE);
7650 		goto done;
7651 	}
7652 	error = collect_commits(&commits, commit_id, pid->id,
7653 	    yca_id, got_worktree_get_path_prefix(worktree),
7654 	    GOT_ERR_REBASE_PATH, repo);
7655 	got_object_commit_close(commit);
7656 	commit = NULL;
7657 	if (error)
7658 		goto done;
7659 
7660 	if (SIMPLEQ_EMPTY(&commits)) {
7661 		if (continue_rebase) {
7662 			error = rebase_complete(worktree, fileindex,
7663 			    branch, new_base_branch, tmp_branch, repo);
7664 			goto done;
7665 		} else {
7666 			/* Fast-forward the reference of the branch. */
7667 			struct got_object_id *new_head_commit_id;
7668 			char *id_str;
7669 			error = got_ref_resolve(&new_head_commit_id, repo,
7670 			    new_base_branch);
7671 			if (error)
7672 				goto done;
7673 			error = got_object_id_str(&id_str, new_head_commit_id);
7674 			printf("Forwarding %s to commit %s\n",
7675 			    got_ref_get_name(branch), id_str);
7676 			free(id_str);
7677 			error = got_ref_change_ref(branch,
7678 			    new_head_commit_id);
7679 			if (error)
7680 				goto done;
7681 		}
7682 	}
7683 
7684 	pid = NULL;
7685 	SIMPLEQ_FOREACH(qid, &commits, entry) {
7686 		struct got_update_progress_arg upa;
7687 
7688 		commit_id = qid->id;
7689 		parent_id = pid ? pid->id : yca_id;
7690 		pid = qid;
7691 
7692 		memset(&upa, 0, sizeof(upa));
7693 		error = got_worktree_rebase_merge_files(&merged_paths,
7694 		    worktree, fileindex, parent_id, commit_id, repo,
7695 		    update_progress, &upa, check_cancelled, NULL);
7696 		if (error)
7697 			goto done;
7698 
7699 		print_update_progress_stats(&upa);
7700 		if (upa.conflicts > 0)
7701 			rebase_status = GOT_STATUS_CONFLICT;
7702 
7703 		if (rebase_status == GOT_STATUS_CONFLICT) {
7704 			error = show_rebase_merge_conflict(qid->id, repo);
7705 			if (error)
7706 				goto done;
7707 			got_worktree_rebase_pathlist_free(&merged_paths);
7708 			break;
7709 		}
7710 
7711 		error = rebase_commit(&merged_paths, worktree, fileindex,
7712 		    tmp_branch, commit_id, repo);
7713 		got_worktree_rebase_pathlist_free(&merged_paths);
7714 		if (error)
7715 			goto done;
7716 	}
7717 
7718 	if (rebase_status == GOT_STATUS_CONFLICT) {
7719 		error = got_worktree_rebase_postpone(worktree, fileindex);
7720 		if (error)
7721 			goto done;
7722 		error = got_error_msg(GOT_ERR_CONFLICTS,
7723 		    "conflicts must be resolved before rebasing can continue");
7724 	} else
7725 		error = rebase_complete(worktree, fileindex, branch,
7726 		    new_base_branch, tmp_branch, repo);
7727 done:
7728 	got_object_id_queue_free(&commits);
7729 	free(branch_head_commit_id);
7730 	free(resume_commit_id);
7731 	free(yca_id);
7732 	if (commit)
7733 		got_object_commit_close(commit);
7734 	if (branch)
7735 		got_ref_close(branch);
7736 	if (new_base_branch)
7737 		got_ref_close(new_base_branch);
7738 	if (tmp_branch)
7739 		got_ref_close(tmp_branch);
7740 	if (worktree)
7741 		got_worktree_close(worktree);
7742 	if (repo)
7743 		got_repo_close(repo);
7744 	return error;
7745 }
7746 
7747 __dead static void
7748 usage_histedit(void)
7749 {
7750 	fprintf(stderr, "usage: %s histedit [-a] [-c] [-F histedit-script] [-m]\n",
7751 	    getprogname());
7752 	exit(1);
7753 }
7754 
7755 #define GOT_HISTEDIT_PICK 'p'
7756 #define GOT_HISTEDIT_EDIT 'e'
7757 #define GOT_HISTEDIT_FOLD 'f'
7758 #define GOT_HISTEDIT_DROP 'd'
7759 #define GOT_HISTEDIT_MESG 'm'
7760 
7761 static struct got_histedit_cmd {
7762 	unsigned char code;
7763 	const char *name;
7764 	const char *desc;
7765 } got_histedit_cmds[] = {
7766 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
7767 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
7768 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
7769 	    "be used" },
7770 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
7771 	{ GOT_HISTEDIT_MESG, "mesg",
7772 	    "single-line log message for commit above (open editor if empty)" },
7773 };
7774 
7775 struct got_histedit_list_entry {
7776 	TAILQ_ENTRY(got_histedit_list_entry) entry;
7777 	struct got_object_id *commit_id;
7778 	const struct got_histedit_cmd *cmd;
7779 	char *logmsg;
7780 };
7781 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
7782 
7783 static const struct got_error *
7784 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
7785     FILE *f, struct got_repository *repo)
7786 {
7787 	const struct got_error *err = NULL;
7788 	char *logmsg = NULL, *id_str = NULL;
7789 	struct got_commit_object *commit = NULL;
7790 	int n;
7791 
7792 	err = got_object_open_as_commit(&commit, repo, commit_id);
7793 	if (err)
7794 		goto done;
7795 
7796 	err = get_short_logmsg(&logmsg, 34, commit);
7797 	if (err)
7798 		goto done;
7799 
7800 	err = got_object_id_str(&id_str, commit_id);
7801 	if (err)
7802 		goto done;
7803 
7804 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
7805 	if (n < 0)
7806 		err = got_ferror(f, GOT_ERR_IO);
7807 done:
7808 	if (commit)
7809 		got_object_commit_close(commit);
7810 	free(id_str);
7811 	free(logmsg);
7812 	return err;
7813 }
7814 
7815 static const struct got_error *
7816 histedit_write_commit_list(struct got_object_id_queue *commits,
7817     FILE *f, int edit_logmsg_only, struct got_repository *repo)
7818 {
7819 	const struct got_error *err = NULL;
7820 	struct got_object_qid *qid;
7821 
7822 	if (SIMPLEQ_EMPTY(commits))
7823 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
7824 
7825 	SIMPLEQ_FOREACH(qid, commits, entry) {
7826 		err = histedit_write_commit(qid->id, got_histedit_cmds[0].name,
7827 		    f, repo);
7828 		if (err)
7829 			break;
7830 		if (edit_logmsg_only) {
7831 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
7832 			if (n < 0) {
7833 				err = got_ferror(f, GOT_ERR_IO);
7834 				break;
7835 			}
7836 		}
7837 	}
7838 
7839 	return err;
7840 }
7841 
7842 static const struct got_error *
7843 write_cmd_list(FILE *f, const char *branch_name,
7844     struct got_object_id_queue *commits)
7845 {
7846 	const struct got_error *err = NULL;
7847 	int n, i;
7848 	char *id_str;
7849 	struct got_object_qid *qid;
7850 
7851 	qid = SIMPLEQ_FIRST(commits);
7852 	err = got_object_id_str(&id_str, qid->id);
7853 	if (err)
7854 		return err;
7855 
7856 	n = fprintf(f,
7857 	    "# Editing the history of branch '%s' starting at\n"
7858 	    "# commit %s\n"
7859 	    "# Commits will be processed in order from top to "
7860 	    "bottom of this file.\n", branch_name, id_str);
7861 	if (n < 0) {
7862 		err = got_ferror(f, GOT_ERR_IO);
7863 		goto done;
7864 	}
7865 
7866 	n = fprintf(f, "# Available histedit commands:\n");
7867 	if (n < 0) {
7868 		err = got_ferror(f, GOT_ERR_IO);
7869 		goto done;
7870 	}
7871 
7872 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
7873 		struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
7874 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
7875 		    cmd->desc);
7876 		if (n < 0) {
7877 			err = got_ferror(f, GOT_ERR_IO);
7878 			break;
7879 		}
7880 	}
7881 done:
7882 	free(id_str);
7883 	return err;
7884 }
7885 
7886 static const struct got_error *
7887 histedit_syntax_error(int lineno)
7888 {
7889 	static char msg[42];
7890 	int ret;
7891 
7892 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
7893 	    lineno);
7894 	if (ret == -1 || ret >= sizeof(msg))
7895 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
7896 
7897 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
7898 }
7899 
7900 static const struct got_error *
7901 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
7902     char *logmsg, struct got_repository *repo)
7903 {
7904 	const struct got_error *err;
7905 	struct got_commit_object *folded_commit = NULL;
7906 	char *id_str, *folded_logmsg = NULL;
7907 
7908 	err = got_object_id_str(&id_str, hle->commit_id);
7909 	if (err)
7910 		return err;
7911 
7912 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
7913 	if (err)
7914 		goto done;
7915 
7916 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
7917 	if (err)
7918 		goto done;
7919 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
7920 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
7921 	    folded_logmsg) == -1) {
7922 		err = got_error_from_errno("asprintf");
7923 	}
7924 done:
7925 	if (folded_commit)
7926 		got_object_commit_close(folded_commit);
7927 	free(id_str);
7928 	free(folded_logmsg);
7929 	return err;
7930 }
7931 
7932 static struct got_histedit_list_entry *
7933 get_folded_commits(struct got_histedit_list_entry *hle)
7934 {
7935 	struct got_histedit_list_entry *prev, *folded = NULL;
7936 
7937 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
7938 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
7939 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
7940 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
7941 			folded = prev;
7942 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
7943 	}
7944 
7945 	return folded;
7946 }
7947 
7948 static const struct got_error *
7949 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
7950     struct got_repository *repo)
7951 {
7952 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
7953 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
7954 	const struct got_error *err = NULL;
7955 	struct got_commit_object *commit = NULL;
7956 	int logmsg_len;
7957 	int fd;
7958 	struct got_histedit_list_entry *folded = NULL;
7959 
7960 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
7961 	if (err)
7962 		return err;
7963 
7964 	folded = get_folded_commits(hle);
7965 	if (folded) {
7966 		while (folded != hle) {
7967 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
7968 				folded = TAILQ_NEXT(folded, entry);
7969 				continue;
7970 			}
7971 			err = append_folded_commit_msg(&new_msg, folded,
7972 			    logmsg, repo);
7973 			if (err)
7974 				goto done;
7975 			free(logmsg);
7976 			logmsg = new_msg;
7977 			folded = TAILQ_NEXT(folded, entry);
7978 		}
7979 	}
7980 
7981 	err = got_object_id_str(&id_str, hle->commit_id);
7982 	if (err)
7983 		goto done;
7984 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
7985 	if (err)
7986 		goto done;
7987 	logmsg_len = asprintf(&new_msg,
7988 	    "%s\n# original log message of commit %s: %s",
7989 	    logmsg ? logmsg : "", id_str, orig_logmsg);
7990 	if (logmsg_len == -1) {
7991 		err = got_error_from_errno("asprintf");
7992 		goto done;
7993 	}
7994 	free(logmsg);
7995 	logmsg = new_msg;
7996 
7997 	err = got_object_id_str(&id_str, hle->commit_id);
7998 	if (err)
7999 		goto done;
8000 
8001 	err = got_opentemp_named_fd(&logmsg_path, &fd,
8002 	    GOT_TMPDIR_STR "/got-logmsg");
8003 	if (err)
8004 		goto done;
8005 
8006 	write(fd, logmsg, logmsg_len);
8007 	close(fd);
8008 
8009 	err = get_editor(&editor);
8010 	if (err)
8011 		goto done;
8012 
8013 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
8014 	    logmsg_len);
8015 	if (err) {
8016 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
8017 			goto done;
8018 		err = got_object_commit_get_logmsg(&hle->logmsg, commit);
8019 	}
8020 done:
8021 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
8022 		err = got_error_from_errno2("unlink", logmsg_path);
8023 	free(logmsg_path);
8024 	free(logmsg);
8025 	free(orig_logmsg);
8026 	free(editor);
8027 	if (commit)
8028 		got_object_commit_close(commit);
8029 	return err;
8030 }
8031 
8032 static const struct got_error *
8033 histedit_parse_list(struct got_histedit_list *histedit_cmds,
8034     FILE *f, struct got_repository *repo)
8035 {
8036 	const struct got_error *err = NULL;
8037 	char *line = NULL, *p, *end;
8038 	size_t size;
8039 	ssize_t len;
8040 	int lineno = 0, i;
8041 	const struct got_histedit_cmd *cmd;
8042 	struct got_object_id *commit_id = NULL;
8043 	struct got_histedit_list_entry *hle = NULL;
8044 
8045 	for (;;) {
8046 		len = getline(&line, &size, f);
8047 		if (len == -1) {
8048 			const struct got_error *getline_err;
8049 			if (feof(f))
8050 				break;
8051 			getline_err = got_error_from_errno("getline");
8052 			err = got_ferror(f, getline_err->code);
8053 			break;
8054 		}
8055 		lineno++;
8056 		p = line;
8057 		while (isspace((unsigned char)p[0]))
8058 			p++;
8059 		if (p[0] == '#' || p[0] == '\0') {
8060 			free(line);
8061 			line = NULL;
8062 			continue;
8063 		}
8064 		cmd = NULL;
8065 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
8066 			cmd = &got_histedit_cmds[i];
8067 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
8068 			    isspace((unsigned char)p[strlen(cmd->name)])) {
8069 				p += strlen(cmd->name);
8070 				break;
8071 			}
8072 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
8073 				p++;
8074 				break;
8075 			}
8076 		}
8077 		if (i == nitems(got_histedit_cmds)) {
8078 			err = histedit_syntax_error(lineno);
8079 			break;
8080 		}
8081 		while (isspace((unsigned char)p[0]))
8082 			p++;
8083 		if (cmd->code == GOT_HISTEDIT_MESG) {
8084 			if (hle == NULL || hle->logmsg != NULL) {
8085 				err = got_error(GOT_ERR_HISTEDIT_CMD);
8086 				break;
8087 			}
8088 			if (p[0] == '\0') {
8089 				err = histedit_edit_logmsg(hle, repo);
8090 				if (err)
8091 					break;
8092 			} else {
8093 				hle->logmsg = strdup(p);
8094 				if (hle->logmsg == NULL) {
8095 					err = got_error_from_errno("strdup");
8096 					break;
8097 				}
8098 			}
8099 			free(line);
8100 			line = NULL;
8101 			continue;
8102 		} else {
8103 			end = p;
8104 			while (end[0] && !isspace((unsigned char)end[0]))
8105 				end++;
8106 			*end = '\0';
8107 
8108 			err = got_object_resolve_id_str(&commit_id, repo, p);
8109 			if (err) {
8110 				/* override error code */
8111 				err = histedit_syntax_error(lineno);
8112 				break;
8113 			}
8114 		}
8115 		hle = malloc(sizeof(*hle));
8116 		if (hle == NULL) {
8117 			err = got_error_from_errno("malloc");
8118 			break;
8119 		}
8120 		hle->cmd = cmd;
8121 		hle->commit_id = commit_id;
8122 		hle->logmsg = NULL;
8123 		commit_id = NULL;
8124 		free(line);
8125 		line = NULL;
8126 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
8127 	}
8128 
8129 	free(line);
8130 	free(commit_id);
8131 	return err;
8132 }
8133 
8134 static const struct got_error *
8135 histedit_check_script(struct got_histedit_list *histedit_cmds,
8136     struct got_object_id_queue *commits, struct got_repository *repo)
8137 {
8138 	const struct got_error *err = NULL;
8139 	struct got_object_qid *qid;
8140 	struct got_histedit_list_entry *hle;
8141 	static char msg[92];
8142 	char *id_str;
8143 
8144 	if (TAILQ_EMPTY(histedit_cmds))
8145 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
8146 		    "histedit script contains no commands");
8147 	if (SIMPLEQ_EMPTY(commits))
8148 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
8149 
8150 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
8151 		struct got_histedit_list_entry *hle2;
8152 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
8153 			if (hle == hle2)
8154 				continue;
8155 			if (got_object_id_cmp(hle->commit_id,
8156 			    hle2->commit_id) != 0)
8157 				continue;
8158 			err = got_object_id_str(&id_str, hle->commit_id);
8159 			if (err)
8160 				return err;
8161 			snprintf(msg, sizeof(msg), "commit %s is listed "
8162 			    "more than once in histedit script", id_str);
8163 			free(id_str);
8164 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
8165 		}
8166 	}
8167 
8168 	SIMPLEQ_FOREACH(qid, commits, entry) {
8169 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
8170 			if (got_object_id_cmp(qid->id, hle->commit_id) == 0)
8171 				break;
8172 		}
8173 		if (hle == NULL) {
8174 			err = got_object_id_str(&id_str, qid->id);
8175 			if (err)
8176 				return err;
8177 			snprintf(msg, sizeof(msg),
8178 			    "commit %s missing from histedit script", id_str);
8179 			free(id_str);
8180 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
8181 		}
8182 	}
8183 
8184 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
8185 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
8186 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
8187 		    "last commit in histedit script cannot be folded");
8188 
8189 	return NULL;
8190 }
8191 
8192 static const struct got_error *
8193 histedit_run_editor(struct got_histedit_list *histedit_cmds,
8194     const char *path, struct got_object_id_queue *commits,
8195     struct got_repository *repo)
8196 {
8197 	const struct got_error *err = NULL;
8198 	char *editor;
8199 	FILE *f = NULL;
8200 
8201 	err = get_editor(&editor);
8202 	if (err)
8203 		return err;
8204 
8205 	if (spawn_editor(editor, path) == -1) {
8206 		err = got_error_from_errno("failed spawning editor");
8207 		goto done;
8208 	}
8209 
8210 	f = fopen(path, "r");
8211 	if (f == NULL) {
8212 		err = got_error_from_errno("fopen");
8213 		goto done;
8214 	}
8215 	err = histedit_parse_list(histedit_cmds, f, repo);
8216 	if (err)
8217 		goto done;
8218 
8219 	err = histedit_check_script(histedit_cmds, commits, repo);
8220 done:
8221 	if (f && fclose(f) != 0 && err == NULL)
8222 		err = got_error_from_errno("fclose");
8223 	free(editor);
8224 	return err;
8225 }
8226 
8227 static const struct got_error *
8228 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
8229     struct got_object_id_queue *, const char *, const char *,
8230     struct got_repository *);
8231 
8232 static const struct got_error *
8233 histedit_edit_script(struct got_histedit_list *histedit_cmds,
8234     struct got_object_id_queue *commits, const char *branch_name,
8235     int edit_logmsg_only, struct got_repository *repo)
8236 {
8237 	const struct got_error *err;
8238 	FILE *f = NULL;
8239 	char *path = NULL;
8240 
8241 	err = got_opentemp_named(&path, &f, "got-histedit");
8242 	if (err)
8243 		return err;
8244 
8245 	err = write_cmd_list(f, branch_name, commits);
8246 	if (err)
8247 		goto done;
8248 
8249 	err = histedit_write_commit_list(commits, f, edit_logmsg_only, repo);
8250 	if (err)
8251 		goto done;
8252 
8253 	if (edit_logmsg_only) {
8254 		rewind(f);
8255 		err = histedit_parse_list(histedit_cmds, f, repo);
8256 	} else {
8257 		if (fclose(f) != 0) {
8258 			err = got_error_from_errno("fclose");
8259 			goto done;
8260 		}
8261 		f = NULL;
8262 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
8263 		if (err) {
8264 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
8265 			    err->code != GOT_ERR_HISTEDIT_CMD)
8266 				goto done;
8267 			err = histedit_edit_list_retry(histedit_cmds, err,
8268 			    commits, path, branch_name, repo);
8269 		}
8270 	}
8271 done:
8272 	if (f && fclose(f) != 0 && err == NULL)
8273 		err = got_error_from_errno("fclose");
8274 	if (path && unlink(path) != 0 && err == NULL)
8275 		err = got_error_from_errno2("unlink", path);
8276 	free(path);
8277 	return err;
8278 }
8279 
8280 static const struct got_error *
8281 histedit_save_list(struct got_histedit_list *histedit_cmds,
8282     struct got_worktree *worktree, struct got_repository *repo)
8283 {
8284 	const struct got_error *err = NULL;
8285 	char *path = NULL;
8286 	FILE *f = NULL;
8287 	struct got_histedit_list_entry *hle;
8288 	struct got_commit_object *commit = NULL;
8289 
8290 	err = got_worktree_get_histedit_script_path(&path, worktree);
8291 	if (err)
8292 		return err;
8293 
8294 	f = fopen(path, "w");
8295 	if (f == NULL) {
8296 		err = got_error_from_errno2("fopen", path);
8297 		goto done;
8298 	}
8299 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
8300 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
8301 		    repo);
8302 		if (err)
8303 			break;
8304 
8305 		if (hle->logmsg) {
8306 			int n = fprintf(f, "%c %s\n",
8307 			    GOT_HISTEDIT_MESG, hle->logmsg);
8308 			if (n < 0) {
8309 				err = got_ferror(f, GOT_ERR_IO);
8310 				break;
8311 			}
8312 		}
8313 	}
8314 done:
8315 	if (f && fclose(f) != 0 && err == NULL)
8316 		err = got_error_from_errno("fclose");
8317 	free(path);
8318 	if (commit)
8319 		got_object_commit_close(commit);
8320 	return err;
8321 }
8322 
8323 void
8324 histedit_free_list(struct got_histedit_list *histedit_cmds)
8325 {
8326 	struct got_histedit_list_entry *hle;
8327 
8328 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
8329 		TAILQ_REMOVE(histedit_cmds, hle, entry);
8330 		free(hle);
8331 	}
8332 }
8333 
8334 static const struct got_error *
8335 histedit_load_list(struct got_histedit_list *histedit_cmds,
8336     const char *path, struct got_repository *repo)
8337 {
8338 	const struct got_error *err = NULL;
8339 	FILE *f = NULL;
8340 
8341 	f = fopen(path, "r");
8342 	if (f == NULL) {
8343 		err = got_error_from_errno2("fopen", path);
8344 		goto done;
8345 	}
8346 
8347 	err = histedit_parse_list(histedit_cmds, f, repo);
8348 done:
8349 	if (f && fclose(f) != 0 && err == NULL)
8350 		err = got_error_from_errno("fclose");
8351 	return err;
8352 }
8353 
8354 static const struct got_error *
8355 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
8356     const struct got_error *edit_err, struct got_object_id_queue *commits,
8357     const char *path, const char *branch_name, struct got_repository *repo)
8358 {
8359 	const struct got_error *err = NULL, *prev_err = edit_err;
8360 	int resp = ' ';
8361 
8362 	while (resp != 'c' && resp != 'r' && resp != 'a') {
8363 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
8364 		    "or (a)bort: ", getprogname(), prev_err->msg);
8365 		resp = getchar();
8366 		if (resp == '\n')
8367 			resp = getchar();
8368 		if (resp == 'c') {
8369 			histedit_free_list(histedit_cmds);
8370 			err = histedit_run_editor(histedit_cmds, path, commits,
8371 			    repo);
8372 			if (err) {
8373 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
8374 				    err->code != GOT_ERR_HISTEDIT_CMD)
8375 					break;
8376 				prev_err = err;
8377 				resp = ' ';
8378 				continue;
8379 			}
8380 			break;
8381 		} else if (resp == 'r') {
8382 			histedit_free_list(histedit_cmds);
8383 			err = histedit_edit_script(histedit_cmds,
8384 			    commits, branch_name, 0, repo);
8385 			if (err) {
8386 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
8387 				    err->code != GOT_ERR_HISTEDIT_CMD)
8388 					break;
8389 				prev_err = err;
8390 				resp = ' ';
8391 				continue;
8392 			}
8393 			break;
8394 		} else if (resp == 'a') {
8395 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
8396 			break;
8397 		} else
8398 			printf("invalid response '%c'\n", resp);
8399 	}
8400 
8401 	return err;
8402 }
8403 
8404 static const struct got_error *
8405 histedit_complete(struct got_worktree *worktree,
8406     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
8407     struct got_reference *branch, struct got_repository *repo)
8408 {
8409 	printf("Switching work tree to %s\n",
8410 	    got_ref_get_symref_target(branch));
8411 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
8412 	    branch, repo);
8413 }
8414 
8415 static const struct got_error *
8416 show_histedit_progress(struct got_commit_object *commit,
8417     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
8418 {
8419 	const struct got_error *err;
8420 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
8421 
8422 	err = got_object_id_str(&old_id_str, hle->commit_id);
8423 	if (err)
8424 		goto done;
8425 
8426 	if (new_id) {
8427 		err = got_object_id_str(&new_id_str, new_id);
8428 		if (err)
8429 			goto done;
8430 	}
8431 
8432 	old_id_str[12] = '\0';
8433 	if (new_id_str)
8434 		new_id_str[12] = '\0';
8435 
8436 	if (hle->logmsg) {
8437 		logmsg = strdup(hle->logmsg);
8438 		if (logmsg == NULL) {
8439 			err = got_error_from_errno("strdup");
8440 			goto done;
8441 		}
8442 		trim_logmsg(logmsg, 42);
8443 	} else {
8444 		err = get_short_logmsg(&logmsg, 42, commit);
8445 		if (err)
8446 			goto done;
8447 	}
8448 
8449 	switch (hle->cmd->code) {
8450 	case GOT_HISTEDIT_PICK:
8451 	case GOT_HISTEDIT_EDIT:
8452 		printf("%s -> %s: %s\n", old_id_str,
8453 		    new_id_str ? new_id_str : "no-op change", logmsg);
8454 		break;
8455 	case GOT_HISTEDIT_DROP:
8456 	case GOT_HISTEDIT_FOLD:
8457 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
8458 		    logmsg);
8459 		break;
8460 	default:
8461 		break;
8462 	}
8463 done:
8464 	free(old_id_str);
8465 	free(new_id_str);
8466 	return err;
8467 }
8468 
8469 static const struct got_error *
8470 histedit_commit(struct got_pathlist_head *merged_paths,
8471     struct got_worktree *worktree, struct got_fileindex *fileindex,
8472     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
8473     struct got_repository *repo)
8474 {
8475 	const struct got_error *err;
8476 	struct got_commit_object *commit;
8477 	struct got_object_id *new_commit_id;
8478 
8479 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
8480 	    && hle->logmsg == NULL) {
8481 		err = histedit_edit_logmsg(hle, repo);
8482 		if (err)
8483 			return err;
8484 	}
8485 
8486 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
8487 	if (err)
8488 		return err;
8489 
8490 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
8491 	    worktree, fileindex, tmp_branch, commit, hle->commit_id,
8492 	    hle->logmsg, repo);
8493 	if (err) {
8494 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
8495 			goto done;
8496 		err = show_histedit_progress(commit, hle, NULL);
8497 	} else {
8498 		err = show_histedit_progress(commit, hle, new_commit_id);
8499 		free(new_commit_id);
8500 	}
8501 done:
8502 	got_object_commit_close(commit);
8503 	return err;
8504 }
8505 
8506 static const struct got_error *
8507 histedit_skip_commit(struct got_histedit_list_entry *hle,
8508     struct got_worktree *worktree, struct got_repository *repo)
8509 {
8510 	const struct got_error *error;
8511 	struct got_commit_object *commit;
8512 
8513 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
8514 	    repo);
8515 	if (error)
8516 		return error;
8517 
8518 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
8519 	if (error)
8520 		return error;
8521 
8522 	error = show_histedit_progress(commit, hle, NULL);
8523 	got_object_commit_close(commit);
8524 	return error;
8525 }
8526 
8527 static const struct got_error *
8528 check_local_changes(void *arg, unsigned char status,
8529     unsigned char staged_status, const char *path,
8530     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8531     struct got_object_id *commit_id, int dirfd, const char *de_name)
8532 {
8533 	int *have_local_changes = arg;
8534 
8535 	switch (status) {
8536 	case GOT_STATUS_ADD:
8537 	case GOT_STATUS_DELETE:
8538 	case GOT_STATUS_MODIFY:
8539 	case GOT_STATUS_CONFLICT:
8540 		*have_local_changes = 1;
8541 		return got_error(GOT_ERR_CANCELLED);
8542 	default:
8543 		break;
8544 	}
8545 
8546 	switch (staged_status) {
8547 	case GOT_STATUS_ADD:
8548 	case GOT_STATUS_DELETE:
8549 	case GOT_STATUS_MODIFY:
8550 		*have_local_changes = 1;
8551 		return got_error(GOT_ERR_CANCELLED);
8552 	default:
8553 		break;
8554 	}
8555 
8556 	return NULL;
8557 }
8558 
8559 static const struct got_error *
8560 cmd_histedit(int argc, char *argv[])
8561 {
8562 	const struct got_error *error = NULL;
8563 	struct got_worktree *worktree = NULL;
8564 	struct got_fileindex *fileindex = NULL;
8565 	struct got_repository *repo = NULL;
8566 	char *cwd = NULL;
8567 	struct got_reference *branch = NULL;
8568 	struct got_reference *tmp_branch = NULL;
8569 	struct got_object_id *resume_commit_id = NULL;
8570 	struct got_object_id *base_commit_id = NULL;
8571 	struct got_object_id *head_commit_id = NULL;
8572 	struct got_commit_object *commit = NULL;
8573 	int ch, rebase_in_progress = 0;
8574 	struct got_update_progress_arg upa;
8575 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
8576 	int edit_logmsg_only = 0;
8577 	const char *edit_script_path = NULL;
8578 	unsigned char rebase_status = GOT_STATUS_NO_CHANGE;
8579 	struct got_object_id_queue commits;
8580 	struct got_pathlist_head merged_paths;
8581 	const struct got_object_id_queue *parent_ids;
8582 	struct got_object_qid *pid;
8583 	struct got_histedit_list histedit_cmds;
8584 	struct got_histedit_list_entry *hle;
8585 
8586 	SIMPLEQ_INIT(&commits);
8587 	TAILQ_INIT(&histedit_cmds);
8588 	TAILQ_INIT(&merged_paths);
8589 	memset(&upa, 0, sizeof(upa));
8590 
8591 	while ((ch = getopt(argc, argv, "acF:m")) != -1) {
8592 		switch (ch) {
8593 		case 'a':
8594 			abort_edit = 1;
8595 			break;
8596 		case 'c':
8597 			continue_edit = 1;
8598 			break;
8599 		case 'F':
8600 			edit_script_path = optarg;
8601 			break;
8602 		case 'm':
8603 			edit_logmsg_only = 1;
8604 			break;
8605 		default:
8606 			usage_histedit();
8607 			/* NOTREACHED */
8608 		}
8609 	}
8610 
8611 	argc -= optind;
8612 	argv += optind;
8613 
8614 #ifndef PROFILE
8615 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8616 	    "unveil", NULL) == -1)
8617 		err(1, "pledge");
8618 #endif
8619 	if (abort_edit && continue_edit)
8620 		errx(1, "histedit's -a and -c options are mutually exclusive");
8621 	if (edit_script_path && edit_logmsg_only)
8622 		errx(1, "histedit's -F and -m options are mutually exclusive");
8623 	if (abort_edit && edit_logmsg_only)
8624 		errx(1, "histedit's -a and -m options are mutually exclusive");
8625 	if (continue_edit && edit_logmsg_only)
8626 		errx(1, "histedit's -c and -m options are mutually exclusive");
8627 	if (argc != 0)
8628 		usage_histedit();
8629 
8630 	/*
8631 	 * This command cannot apply unveil(2) in all cases because the
8632 	 * user may choose to run an editor to edit the histedit script
8633 	 * and to edit individual commit log messages.
8634 	 * unveil(2) traverses exec(2); if an editor is used we have to
8635 	 * apply unveil after edit script and log messages have been written.
8636 	 * XXX TODO: Make use of unveil(2) where possible.
8637 	 */
8638 
8639 	cwd = getcwd(NULL, 0);
8640 	if (cwd == NULL) {
8641 		error = got_error_from_errno("getcwd");
8642 		goto done;
8643 	}
8644 	error = got_worktree_open(&worktree, cwd);
8645 	if (error) {
8646 		if (error->code == GOT_ERR_NOT_WORKTREE)
8647 			error = wrap_not_worktree_error(error, "histedit", cwd);
8648 		goto done;
8649 	}
8650 
8651 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8652 	    NULL);
8653 	if (error != NULL)
8654 		goto done;
8655 
8656 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
8657 	if (error)
8658 		goto done;
8659 	if (rebase_in_progress) {
8660 		error = got_error(GOT_ERR_REBASING);
8661 		goto done;
8662 	}
8663 
8664 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
8665 	if (error)
8666 		goto done;
8667 
8668 	if (edit_in_progress && edit_logmsg_only) {
8669 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
8670 		    "histedit operation is in progress in this "
8671 		    "work tree and must be continued or aborted "
8672 		    "before the -m option can be used");
8673 		goto done;
8674 	}
8675 
8676 	if (edit_in_progress && abort_edit) {
8677 		error = got_worktree_histedit_continue(&resume_commit_id,
8678 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
8679 		    worktree, repo);
8680 		if (error)
8681 			goto done;
8682 		printf("Switching work tree to %s\n",
8683 		    got_ref_get_symref_target(branch));
8684 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
8685 		    branch, base_commit_id, update_progress, &upa);
8686 		if (error)
8687 			goto done;
8688 		printf("Histedit of %s aborted\n",
8689 		    got_ref_get_symref_target(branch));
8690 		print_update_progress_stats(&upa);
8691 		goto done; /* nothing else to do */
8692 	} else if (abort_edit) {
8693 		error = got_error(GOT_ERR_NOT_HISTEDIT);
8694 		goto done;
8695 	}
8696 
8697 	if (continue_edit) {
8698 		char *path;
8699 
8700 		if (!edit_in_progress) {
8701 			error = got_error(GOT_ERR_NOT_HISTEDIT);
8702 			goto done;
8703 		}
8704 
8705 		error = got_worktree_get_histedit_script_path(&path, worktree);
8706 		if (error)
8707 			goto done;
8708 
8709 		error = histedit_load_list(&histedit_cmds, path, repo);
8710 		free(path);
8711 		if (error)
8712 			goto done;
8713 
8714 		error = got_worktree_histedit_continue(&resume_commit_id,
8715 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
8716 		    worktree, repo);
8717 		if (error)
8718 			goto done;
8719 
8720 		error = got_ref_resolve(&head_commit_id, repo, branch);
8721 		if (error)
8722 			goto done;
8723 
8724 		error = got_object_open_as_commit(&commit, repo,
8725 		    head_commit_id);
8726 		if (error)
8727 			goto done;
8728 		parent_ids = got_object_commit_get_parent_ids(commit);
8729 		pid = SIMPLEQ_FIRST(parent_ids);
8730 		if (pid == NULL) {
8731 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
8732 			goto done;
8733 		}
8734 		error = collect_commits(&commits, head_commit_id, pid->id,
8735 		    base_commit_id, got_worktree_get_path_prefix(worktree),
8736 		    GOT_ERR_HISTEDIT_PATH, repo);
8737 		got_object_commit_close(commit);
8738 		commit = NULL;
8739 		if (error)
8740 			goto done;
8741 	} else {
8742 		if (edit_in_progress) {
8743 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
8744 			goto done;
8745 		}
8746 
8747 		error = got_ref_open(&branch, repo,
8748 		    got_worktree_get_head_ref_name(worktree), 0);
8749 		if (error != NULL)
8750 			goto done;
8751 
8752 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
8753 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
8754 			    "will not edit commit history of a branch outside "
8755 			    "the \"refs/heads/\" reference namespace");
8756 			goto done;
8757 		}
8758 
8759 		error = got_ref_resolve(&head_commit_id, repo, branch);
8760 		got_ref_close(branch);
8761 		branch = NULL;
8762 		if (error)
8763 			goto done;
8764 
8765 		error = got_object_open_as_commit(&commit, repo,
8766 		    head_commit_id);
8767 		if (error)
8768 			goto done;
8769 		parent_ids = got_object_commit_get_parent_ids(commit);
8770 		pid = SIMPLEQ_FIRST(parent_ids);
8771 		if (pid == NULL) {
8772 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
8773 			goto done;
8774 		}
8775 		error = collect_commits(&commits, head_commit_id, pid->id,
8776 		    got_worktree_get_base_commit_id(worktree),
8777 		    got_worktree_get_path_prefix(worktree),
8778 		    GOT_ERR_HISTEDIT_PATH, repo);
8779 		got_object_commit_close(commit);
8780 		commit = NULL;
8781 		if (error)
8782 			goto done;
8783 
8784 		if (SIMPLEQ_EMPTY(&commits)) {
8785 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
8786 			goto done;
8787 		}
8788 
8789 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
8790 		    &base_commit_id, &fileindex, worktree, repo);
8791 		if (error)
8792 			goto done;
8793 
8794 		if (edit_script_path) {
8795 			error = histedit_load_list(&histedit_cmds,
8796 			    edit_script_path, repo);
8797 			if (error) {
8798 				got_worktree_histedit_abort(worktree, fileindex,
8799 				    repo, branch, base_commit_id,
8800 				    update_progress, &upa);
8801 				print_update_progress_stats(&upa);
8802 				goto done;
8803 			}
8804 		} else {
8805 			const char *branch_name;
8806 			branch_name = got_ref_get_symref_target(branch);
8807 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
8808 				branch_name += 11;
8809 			error = histedit_edit_script(&histedit_cmds, &commits,
8810 			    branch_name, edit_logmsg_only, repo);
8811 			if (error) {
8812 				got_worktree_histedit_abort(worktree, fileindex,
8813 				    repo, branch, base_commit_id,
8814 				    update_progress, &upa);
8815 				print_update_progress_stats(&upa);
8816 				goto done;
8817 			}
8818 
8819 		}
8820 
8821 		error = histedit_save_list(&histedit_cmds, worktree,
8822 		    repo);
8823 		if (error) {
8824 			got_worktree_histedit_abort(worktree, fileindex,
8825 			    repo, branch, base_commit_id,
8826 			    update_progress, &upa);
8827 			print_update_progress_stats(&upa);
8828 			goto done;
8829 		}
8830 
8831 	}
8832 
8833 	error = histedit_check_script(&histedit_cmds, &commits, repo);
8834 	if (error)
8835 		goto done;
8836 
8837 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
8838 		if (resume_commit_id) {
8839 			if (got_object_id_cmp(hle->commit_id,
8840 			    resume_commit_id) != 0)
8841 				continue;
8842 
8843 			resume_commit_id = NULL;
8844 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
8845 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
8846 				error = histedit_skip_commit(hle, worktree,
8847 				    repo);
8848 				if (error)
8849 					goto done;
8850 			} else {
8851 				struct got_pathlist_head paths;
8852 				int have_changes = 0;
8853 
8854 				TAILQ_INIT(&paths);
8855 				error = got_pathlist_append(&paths, "", NULL);
8856 				if (error)
8857 					goto done;
8858 				error = got_worktree_status(worktree, &paths,
8859 				    repo, check_local_changes, &have_changes,
8860 				    check_cancelled, NULL);
8861 				got_pathlist_free(&paths);
8862 				if (error) {
8863 					if (error->code != GOT_ERR_CANCELLED)
8864 						goto done;
8865 					if (sigint_received || sigpipe_received)
8866 						goto done;
8867 				}
8868 				if (have_changes) {
8869 					error = histedit_commit(NULL, worktree,
8870 					    fileindex, tmp_branch, hle, repo);
8871 					if (error)
8872 						goto done;
8873 				} else {
8874 					error = got_object_open_as_commit(
8875 					    &commit, repo, hle->commit_id);
8876 					if (error)
8877 						goto done;
8878 					error = show_histedit_progress(commit,
8879 					    hle, NULL);
8880 					got_object_commit_close(commit);
8881 					commit = NULL;
8882 					if (error)
8883 						goto done;
8884 				}
8885 			}
8886 			continue;
8887 		}
8888 
8889 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
8890 			error = histedit_skip_commit(hle, worktree, repo);
8891 			if (error)
8892 				goto done;
8893 			continue;
8894 		}
8895 
8896 		error = got_object_open_as_commit(&commit, repo,
8897 		    hle->commit_id);
8898 		if (error)
8899 			goto done;
8900 		parent_ids = got_object_commit_get_parent_ids(commit);
8901 		pid = SIMPLEQ_FIRST(parent_ids);
8902 
8903 		error = got_worktree_histedit_merge_files(&merged_paths,
8904 		    worktree, fileindex, pid->id, hle->commit_id, repo,
8905 		    update_progress, &upa, check_cancelled, NULL);
8906 		if (error)
8907 			goto done;
8908 		got_object_commit_close(commit);
8909 		commit = NULL;
8910 
8911 		print_update_progress_stats(&upa);
8912 		if (upa.conflicts > 0)
8913 			rebase_status = GOT_STATUS_CONFLICT;
8914 
8915 		if (rebase_status == GOT_STATUS_CONFLICT) {
8916 			error = show_rebase_merge_conflict(hle->commit_id,
8917 			    repo);
8918 			if (error)
8919 				goto done;
8920 			got_worktree_rebase_pathlist_free(&merged_paths);
8921 			break;
8922 		}
8923 
8924 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
8925 			char *id_str;
8926 			error = got_object_id_str(&id_str, hle->commit_id);
8927 			if (error)
8928 				goto done;
8929 			printf("Stopping histedit for amending commit %s\n",
8930 			    id_str);
8931 			free(id_str);
8932 			got_worktree_rebase_pathlist_free(&merged_paths);
8933 			error = got_worktree_histedit_postpone(worktree,
8934 			    fileindex);
8935 			goto done;
8936 		}
8937 
8938 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
8939 			error = histedit_skip_commit(hle, worktree, repo);
8940 			if (error)
8941 				goto done;
8942 			continue;
8943 		}
8944 
8945 		error = histedit_commit(&merged_paths, worktree, fileindex,
8946 		    tmp_branch, hle, repo);
8947 		got_worktree_rebase_pathlist_free(&merged_paths);
8948 		if (error)
8949 			goto done;
8950 	}
8951 
8952 	if (rebase_status == GOT_STATUS_CONFLICT) {
8953 		error = got_worktree_histedit_postpone(worktree, fileindex);
8954 		if (error)
8955 			goto done;
8956 		error = got_error_msg(GOT_ERR_CONFLICTS,
8957 		    "conflicts must be resolved before histedit can continue");
8958 	} else
8959 		error = histedit_complete(worktree, fileindex, tmp_branch,
8960 		    branch, repo);
8961 done:
8962 	got_object_id_queue_free(&commits);
8963 	histedit_free_list(&histedit_cmds);
8964 	free(head_commit_id);
8965 	free(base_commit_id);
8966 	free(resume_commit_id);
8967 	if (commit)
8968 		got_object_commit_close(commit);
8969 	if (branch)
8970 		got_ref_close(branch);
8971 	if (tmp_branch)
8972 		got_ref_close(tmp_branch);
8973 	if (worktree)
8974 		got_worktree_close(worktree);
8975 	if (repo)
8976 		got_repo_close(repo);
8977 	return error;
8978 }
8979 
8980 __dead static void
8981 usage_integrate(void)
8982 {
8983 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
8984 	exit(1);
8985 }
8986 
8987 static const struct got_error *
8988 cmd_integrate(int argc, char *argv[])
8989 {
8990 	const struct got_error *error = NULL;
8991 	struct got_repository *repo = NULL;
8992 	struct got_worktree *worktree = NULL;
8993 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
8994 	const char *branch_arg = NULL;
8995 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
8996 	struct got_fileindex *fileindex = NULL;
8997 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
8998 	int ch;
8999 	struct got_update_progress_arg upa;
9000 
9001 	while ((ch = getopt(argc, argv, "")) != -1) {
9002 		switch (ch) {
9003 		default:
9004 			usage_integrate();
9005 			/* NOTREACHED */
9006 		}
9007 	}
9008 
9009 	argc -= optind;
9010 	argv += optind;
9011 
9012 	if (argc != 1)
9013 		usage_integrate();
9014 	branch_arg = argv[0];
9015 #ifndef PROFILE
9016 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9017 	    "unveil", NULL) == -1)
9018 		err(1, "pledge");
9019 #endif
9020 	cwd = getcwd(NULL, 0);
9021 	if (cwd == NULL) {
9022 		error = got_error_from_errno("getcwd");
9023 		goto done;
9024 	}
9025 
9026 	error = got_worktree_open(&worktree, cwd);
9027 	if (error) {
9028 		if (error->code == GOT_ERR_NOT_WORKTREE)
9029 			error = wrap_not_worktree_error(error, "integrate",
9030 			    cwd);
9031 		goto done;
9032 	}
9033 
9034 	error = check_rebase_or_histedit_in_progress(worktree);
9035 	if (error)
9036 		goto done;
9037 
9038 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9039 	    NULL);
9040 	if (error != NULL)
9041 		goto done;
9042 
9043 	error = apply_unveil(got_repo_get_path(repo), 0,
9044 	    got_worktree_get_root_path(worktree));
9045 	if (error)
9046 		goto done;
9047 
9048 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
9049 		error = got_error_from_errno("asprintf");
9050 		goto done;
9051 	}
9052 
9053 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
9054 	    &base_branch_ref, worktree, refname, repo);
9055 	if (error)
9056 		goto done;
9057 
9058 	refname = strdup(got_ref_get_name(branch_ref));
9059 	if (refname == NULL) {
9060 		error = got_error_from_errno("strdup");
9061 		got_worktree_integrate_abort(worktree, fileindex, repo,
9062 		    branch_ref, base_branch_ref);
9063 		goto done;
9064 	}
9065 	base_refname = strdup(got_ref_get_name(base_branch_ref));
9066 	if (base_refname == NULL) {
9067 		error = got_error_from_errno("strdup");
9068 		got_worktree_integrate_abort(worktree, fileindex, repo,
9069 		    branch_ref, base_branch_ref);
9070 		goto done;
9071 	}
9072 
9073 	error = got_ref_resolve(&commit_id, repo, branch_ref);
9074 	if (error)
9075 		goto done;
9076 
9077 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
9078 	if (error)
9079 		goto done;
9080 
9081 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
9082 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
9083 		    "specified branch has already been integrated");
9084 		got_worktree_integrate_abort(worktree, fileindex, repo,
9085 		    branch_ref, base_branch_ref);
9086 		goto done;
9087 	}
9088 
9089 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
9090 	if (error) {
9091 		if (error->code == GOT_ERR_ANCESTRY)
9092 			error = got_error(GOT_ERR_REBASE_REQUIRED);
9093 		got_worktree_integrate_abort(worktree, fileindex, repo,
9094 		    branch_ref, base_branch_ref);
9095 		goto done;
9096 	}
9097 
9098 	memset(&upa, 0, sizeof(upa));
9099 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
9100 	    branch_ref, base_branch_ref, update_progress, &upa,
9101 	    check_cancelled, NULL);
9102 	if (error)
9103 		goto done;
9104 
9105 	printf("Integrated %s into %s\n", refname, base_refname);
9106 	print_update_progress_stats(&upa);
9107 done:
9108 	if (repo)
9109 		got_repo_close(repo);
9110 	if (worktree)
9111 		got_worktree_close(worktree);
9112 	free(cwd);
9113 	free(base_commit_id);
9114 	free(commit_id);
9115 	free(refname);
9116 	free(base_refname);
9117 	return error;
9118 }
9119 
9120 __dead static void
9121 usage_stage(void)
9122 {
9123 	fprintf(stderr, "usage: %s stage [-l] | [-p] [-F response-script] "
9124 	    "[-S] [file-path ...]\n",
9125 	    getprogname());
9126 	exit(1);
9127 }
9128 
9129 static const struct got_error *
9130 print_stage(void *arg, unsigned char status, unsigned char staged_status,
9131     const char *path, struct got_object_id *blob_id,
9132     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
9133     int dirfd, const char *de_name)
9134 {
9135 	const struct got_error *err = NULL;
9136 	char *id_str = NULL;
9137 
9138 	if (staged_status != GOT_STATUS_ADD &&
9139 	    staged_status != GOT_STATUS_MODIFY &&
9140 	    staged_status != GOT_STATUS_DELETE)
9141 		return NULL;
9142 
9143 	if (staged_status == GOT_STATUS_ADD ||
9144 	    staged_status == GOT_STATUS_MODIFY)
9145 		err = got_object_id_str(&id_str, staged_blob_id);
9146 	else
9147 		err = got_object_id_str(&id_str, blob_id);
9148 	if (err)
9149 		return err;
9150 
9151 	printf("%s %c %s\n", id_str, staged_status, path);
9152 	free(id_str);
9153 	return NULL;
9154 }
9155 
9156 static const struct got_error *
9157 cmd_stage(int argc, char *argv[])
9158 {
9159 	const struct got_error *error = NULL;
9160 	struct got_repository *repo = NULL;
9161 	struct got_worktree *worktree = NULL;
9162 	char *cwd = NULL;
9163 	struct got_pathlist_head paths;
9164 	struct got_pathlist_entry *pe;
9165 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
9166 	FILE *patch_script_file = NULL;
9167 	const char *patch_script_path = NULL;
9168 	struct choose_patch_arg cpa;
9169 
9170 	TAILQ_INIT(&paths);
9171 
9172 	while ((ch = getopt(argc, argv, "lpF:S")) != -1) {
9173 		switch (ch) {
9174 		case 'l':
9175 			list_stage = 1;
9176 			break;
9177 		case 'p':
9178 			pflag = 1;
9179 			break;
9180 		case 'F':
9181 			patch_script_path = optarg;
9182 			break;
9183 		case 'S':
9184 			allow_bad_symlinks = 1;
9185 			break;
9186 		default:
9187 			usage_stage();
9188 			/* NOTREACHED */
9189 		}
9190 	}
9191 
9192 	argc -= optind;
9193 	argv += optind;
9194 
9195 #ifndef PROFILE
9196 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9197 	    "unveil", NULL) == -1)
9198 		err(1, "pledge");
9199 #endif
9200 	if (list_stage && (pflag || patch_script_path))
9201 		errx(1, "-l option cannot be used with other options");
9202 	if (patch_script_path && !pflag)
9203 		errx(1, "-F option can only be used together with -p option");
9204 
9205 	cwd = getcwd(NULL, 0);
9206 	if (cwd == NULL) {
9207 		error = got_error_from_errno("getcwd");
9208 		goto done;
9209 	}
9210 
9211 	error = got_worktree_open(&worktree, cwd);
9212 	if (error) {
9213 		if (error->code == GOT_ERR_NOT_WORKTREE)
9214 			error = wrap_not_worktree_error(error, "stage", cwd);
9215 		goto done;
9216 	}
9217 
9218 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9219 	    NULL);
9220 	if (error != NULL)
9221 		goto done;
9222 
9223 	if (patch_script_path) {
9224 		patch_script_file = fopen(patch_script_path, "r");
9225 		if (patch_script_file == NULL) {
9226 			error = got_error_from_errno2("fopen",
9227 			    patch_script_path);
9228 			goto done;
9229 		}
9230 	}
9231 	error = apply_unveil(got_repo_get_path(repo), 0,
9232 	    got_worktree_get_root_path(worktree));
9233 	if (error)
9234 		goto done;
9235 
9236 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9237 	if (error)
9238 		goto done;
9239 
9240 	if (list_stage)
9241 		error = got_worktree_status(worktree, &paths, repo,
9242 		    print_stage, NULL, check_cancelled, NULL);
9243 	else {
9244 		cpa.patch_script_file = patch_script_file;
9245 		cpa.action = "stage";
9246 		error = got_worktree_stage(worktree, &paths,
9247 		    pflag ? NULL : print_status, NULL,
9248 		    pflag ? choose_patch : NULL, &cpa,
9249 		    allow_bad_symlinks, repo);
9250 	}
9251 done:
9252 	if (patch_script_file && fclose(patch_script_file) == EOF &&
9253 	    error == NULL)
9254 		error = got_error_from_errno2("fclose", patch_script_path);
9255 	if (repo)
9256 		got_repo_close(repo);
9257 	if (worktree)
9258 		got_worktree_close(worktree);
9259 	TAILQ_FOREACH(pe, &paths, entry)
9260 		free((char *)pe->path);
9261 	got_pathlist_free(&paths);
9262 	free(cwd);
9263 	return error;
9264 }
9265 
9266 __dead static void
9267 usage_unstage(void)
9268 {
9269 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
9270 	    "[file-path ...]\n",
9271 	    getprogname());
9272 	exit(1);
9273 }
9274 
9275 
9276 static const struct got_error *
9277 cmd_unstage(int argc, char *argv[])
9278 {
9279 	const struct got_error *error = NULL;
9280 	struct got_repository *repo = NULL;
9281 	struct got_worktree *worktree = NULL;
9282 	char *cwd = NULL;
9283 	struct got_pathlist_head paths;
9284 	struct got_pathlist_entry *pe;
9285 	int ch, pflag = 0;
9286 	struct got_update_progress_arg upa;
9287 	FILE *patch_script_file = NULL;
9288 	const char *patch_script_path = NULL;
9289 	struct choose_patch_arg cpa;
9290 
9291 	TAILQ_INIT(&paths);
9292 
9293 	while ((ch = getopt(argc, argv, "pF:")) != -1) {
9294 		switch (ch) {
9295 		case 'p':
9296 			pflag = 1;
9297 			break;
9298 		case 'F':
9299 			patch_script_path = optarg;
9300 			break;
9301 		default:
9302 			usage_unstage();
9303 			/* NOTREACHED */
9304 		}
9305 	}
9306 
9307 	argc -= optind;
9308 	argv += optind;
9309 
9310 #ifndef PROFILE
9311 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9312 	    "unveil", NULL) == -1)
9313 		err(1, "pledge");
9314 #endif
9315 	if (patch_script_path && !pflag)
9316 		errx(1, "-F option can only be used together with -p option");
9317 
9318 	cwd = getcwd(NULL, 0);
9319 	if (cwd == NULL) {
9320 		error = got_error_from_errno("getcwd");
9321 		goto done;
9322 	}
9323 
9324 	error = got_worktree_open(&worktree, cwd);
9325 	if (error) {
9326 		if (error->code == GOT_ERR_NOT_WORKTREE)
9327 			error = wrap_not_worktree_error(error, "unstage", cwd);
9328 		goto done;
9329 	}
9330 
9331 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9332 	    NULL);
9333 	if (error != NULL)
9334 		goto done;
9335 
9336 	if (patch_script_path) {
9337 		patch_script_file = fopen(patch_script_path, "r");
9338 		if (patch_script_file == NULL) {
9339 			error = got_error_from_errno2("fopen",
9340 			    patch_script_path);
9341 			goto done;
9342 		}
9343 	}
9344 
9345 	error = apply_unveil(got_repo_get_path(repo), 0,
9346 	    got_worktree_get_root_path(worktree));
9347 	if (error)
9348 		goto done;
9349 
9350 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9351 	if (error)
9352 		goto done;
9353 
9354 	cpa.patch_script_file = patch_script_file;
9355 	cpa.action = "unstage";
9356 	memset(&upa, 0, sizeof(upa));
9357 	error = got_worktree_unstage(worktree, &paths, update_progress,
9358 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
9359 	if (!error)
9360 		print_update_progress_stats(&upa);
9361 done:
9362 	if (patch_script_file && fclose(patch_script_file) == EOF &&
9363 	    error == NULL)
9364 		error = got_error_from_errno2("fclose", patch_script_path);
9365 	if (repo)
9366 		got_repo_close(repo);
9367 	if (worktree)
9368 		got_worktree_close(worktree);
9369 	TAILQ_FOREACH(pe, &paths, entry)
9370 		free((char *)pe->path);
9371 	got_pathlist_free(&paths);
9372 	free(cwd);
9373 	return error;
9374 }
9375 
9376 __dead static void
9377 usage_cat(void)
9378 {
9379 	fprintf(stderr, "usage: %s cat [-r repository ] [ -c commit ] [ -P ] "
9380 	    "arg1 [arg2 ...]\n", getprogname());
9381 	exit(1);
9382 }
9383 
9384 static const struct got_error *
9385 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
9386 {
9387 	const struct got_error *err;
9388 	struct got_blob_object *blob;
9389 
9390 	err = got_object_open_as_blob(&blob, repo, id, 8192);
9391 	if (err)
9392 		return err;
9393 
9394 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
9395 	got_object_blob_close(blob);
9396 	return err;
9397 }
9398 
9399 static const struct got_error *
9400 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
9401 {
9402 	const struct got_error *err;
9403 	struct got_tree_object *tree;
9404 	int nentries, i;
9405 
9406 	err = got_object_open_as_tree(&tree, repo, id);
9407 	if (err)
9408 		return err;
9409 
9410 	nentries = got_object_tree_get_nentries(tree);
9411 	for (i = 0; i < nentries; i++) {
9412 		struct got_tree_entry *te;
9413 		char *id_str;
9414 		if (sigint_received || sigpipe_received)
9415 			break;
9416 		te = got_object_tree_get_entry(tree, i);
9417 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
9418 		if (err)
9419 			break;
9420 		fprintf(outfile, "%s %.7o %s\n", id_str,
9421 		    got_tree_entry_get_mode(te),
9422 		    got_tree_entry_get_name(te));
9423 		free(id_str);
9424 	}
9425 
9426 	got_object_tree_close(tree);
9427 	return err;
9428 }
9429 
9430 static const struct got_error *
9431 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
9432 {
9433 	const struct got_error *err;
9434 	struct got_commit_object *commit;
9435 	const struct got_object_id_queue *parent_ids;
9436 	struct got_object_qid *pid;
9437 	char *id_str = NULL;
9438 	const char *logmsg = NULL;
9439 
9440 	err = got_object_open_as_commit(&commit, repo, id);
9441 	if (err)
9442 		return err;
9443 
9444 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
9445 	if (err)
9446 		goto done;
9447 
9448 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
9449 	parent_ids = got_object_commit_get_parent_ids(commit);
9450 	fprintf(outfile, "numparents %d\n",
9451 	    got_object_commit_get_nparents(commit));
9452 	SIMPLEQ_FOREACH(pid, parent_ids, entry) {
9453 		char *pid_str;
9454 		err = got_object_id_str(&pid_str, pid->id);
9455 		if (err)
9456 			goto done;
9457 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
9458 		free(pid_str);
9459 	}
9460 	fprintf(outfile, "%s%s %lld +0000\n", GOT_COMMIT_LABEL_AUTHOR,
9461 	    got_object_commit_get_author(commit),
9462 	    (long long)got_object_commit_get_author_time(commit));
9463 
9464 	fprintf(outfile, "%s%s %lld +0000\n", GOT_COMMIT_LABEL_COMMITTER,
9465 	    got_object_commit_get_author(commit),
9466 	    (long long)got_object_commit_get_committer_time(commit));
9467 
9468 	logmsg = got_object_commit_get_logmsg_raw(commit);
9469 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
9470 	fprintf(outfile, "%s", logmsg);
9471 done:
9472 	free(id_str);
9473 	got_object_commit_close(commit);
9474 	return err;
9475 }
9476 
9477 static const struct got_error *
9478 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
9479 {
9480 	const struct got_error *err;
9481 	struct got_tag_object *tag;
9482 	char *id_str = NULL;
9483 	const char *tagmsg = NULL;
9484 
9485 	err = got_object_open_as_tag(&tag, repo, id);
9486 	if (err)
9487 		return err;
9488 
9489 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
9490 	if (err)
9491 		goto done;
9492 
9493 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
9494 
9495 	switch (got_object_tag_get_object_type(tag)) {
9496 	case GOT_OBJ_TYPE_BLOB:
9497 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
9498 		    GOT_OBJ_LABEL_BLOB);
9499 		break;
9500 	case GOT_OBJ_TYPE_TREE:
9501 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
9502 		    GOT_OBJ_LABEL_TREE);
9503 		break;
9504 	case GOT_OBJ_TYPE_COMMIT:
9505 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
9506 		    GOT_OBJ_LABEL_COMMIT);
9507 		break;
9508 	case GOT_OBJ_TYPE_TAG:
9509 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
9510 		    GOT_OBJ_LABEL_TAG);
9511 		break;
9512 	default:
9513 		break;
9514 	}
9515 
9516 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
9517 	    got_object_tag_get_name(tag));
9518 
9519 	fprintf(outfile, "%s%s %lld +0000\n", GOT_TAG_LABEL_TAGGER,
9520 	    got_object_tag_get_tagger(tag),
9521 	    (long long)got_object_tag_get_tagger_time(tag));
9522 
9523 	tagmsg = got_object_tag_get_message(tag);
9524 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
9525 	fprintf(outfile, "%s", tagmsg);
9526 done:
9527 	free(id_str);
9528 	got_object_tag_close(tag);
9529 	return err;
9530 }
9531 
9532 static const struct got_error *
9533 cmd_cat(int argc, char *argv[])
9534 {
9535 	const struct got_error *error;
9536 	struct got_repository *repo = NULL;
9537 	struct got_worktree *worktree = NULL;
9538 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
9539 	const char *commit_id_str = NULL;
9540 	struct got_object_id *id = NULL, *commit_id = NULL;
9541 	int ch, obj_type, i, force_path = 0;
9542 
9543 #ifndef PROFILE
9544 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
9545 	    NULL) == -1)
9546 		err(1, "pledge");
9547 #endif
9548 
9549 	while ((ch = getopt(argc, argv, "c:r:P")) != -1) {
9550 		switch (ch) {
9551 		case 'c':
9552 			commit_id_str = optarg;
9553 			break;
9554 		case 'r':
9555 			repo_path = realpath(optarg, NULL);
9556 			if (repo_path == NULL)
9557 				return got_error_from_errno2("realpath",
9558 				    optarg);
9559 			got_path_strip_trailing_slashes(repo_path);
9560 			break;
9561 		case 'P':
9562 			force_path = 1;
9563 			break;
9564 		default:
9565 			usage_cat();
9566 			/* NOTREACHED */
9567 		}
9568 	}
9569 
9570 	argc -= optind;
9571 	argv += optind;
9572 
9573 	cwd = getcwd(NULL, 0);
9574 	if (cwd == NULL) {
9575 		error = got_error_from_errno("getcwd");
9576 		goto done;
9577 	}
9578 	error = got_worktree_open(&worktree, cwd);
9579 	if (error && error->code != GOT_ERR_NOT_WORKTREE)
9580 		goto done;
9581 	if (worktree) {
9582 		if (repo_path == NULL) {
9583 			repo_path = strdup(
9584 			    got_worktree_get_repo_path(worktree));
9585 			if (repo_path == NULL) {
9586 				error = got_error_from_errno("strdup");
9587 				goto done;
9588 			}
9589 		}
9590 	}
9591 
9592 	if (repo_path == NULL) {
9593 		repo_path = getcwd(NULL, 0);
9594 		if (repo_path == NULL)
9595 			return got_error_from_errno("getcwd");
9596 	}
9597 
9598 	error = got_repo_open(&repo, repo_path, NULL);
9599 	free(repo_path);
9600 	if (error != NULL)
9601 		goto done;
9602 
9603 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
9604 	if (error)
9605 		goto done;
9606 
9607 	if (commit_id_str == NULL)
9608 		commit_id_str = GOT_REF_HEAD;
9609 	error = got_repo_match_object_id(&commit_id, NULL,
9610 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, 1, repo);
9611 	if (error)
9612 		goto done;
9613 
9614 	for (i = 0; i < argc; i++) {
9615 		if (force_path) {
9616 			error = got_object_id_by_path(&id, repo, commit_id,
9617 			    argv[i]);
9618 			if (error)
9619 				break;
9620 		} else {
9621 			error = got_repo_match_object_id(&id, &label, argv[i],
9622 			    GOT_OBJ_TYPE_ANY, 0, repo);
9623 			if (error) {
9624 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
9625 				    error->code != GOT_ERR_NOT_REF)
9626 					break;
9627 				error = got_object_id_by_path(&id, repo,
9628 				    commit_id, argv[i]);
9629 				if (error)
9630 					break;
9631 			}
9632 		}
9633 
9634 		error = got_object_get_type(&obj_type, repo, id);
9635 		if (error)
9636 			break;
9637 
9638 		switch (obj_type) {
9639 		case GOT_OBJ_TYPE_BLOB:
9640 			error = cat_blob(id, repo, stdout);
9641 			break;
9642 		case GOT_OBJ_TYPE_TREE:
9643 			error = cat_tree(id, repo, stdout);
9644 			break;
9645 		case GOT_OBJ_TYPE_COMMIT:
9646 			error = cat_commit(id, repo, stdout);
9647 			break;
9648 		case GOT_OBJ_TYPE_TAG:
9649 			error = cat_tag(id, repo, stdout);
9650 			break;
9651 		default:
9652 			error = got_error(GOT_ERR_OBJ_TYPE);
9653 			break;
9654 		}
9655 		if (error)
9656 			break;
9657 		free(label);
9658 		label = NULL;
9659 		free(id);
9660 		id = NULL;
9661 	}
9662 done:
9663 	free(label);
9664 	free(id);
9665 	free(commit_id);
9666 	if (worktree)
9667 		got_worktree_close(worktree);
9668 	if (repo) {
9669 		const struct got_error *repo_error;
9670 		repo_error = got_repo_close(repo);
9671 		if (error == NULL)
9672 			error = repo_error;
9673 	}
9674 	return error;
9675 }
9676 
9677 __dead static void
9678 usage_info(void)
9679 {
9680 	fprintf(stderr, "usage: %s info [path ...]\n",
9681 	    getprogname());
9682 	exit(1);
9683 }
9684 
9685 static const struct got_error *
9686 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
9687     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
9688     struct got_object_id *commit_id)
9689 {
9690 	const struct got_error *err = NULL;
9691 	char *id_str = NULL;
9692 	char datebuf[128];
9693 	struct tm mytm, *tm;
9694 	struct got_pathlist_head *paths = arg;
9695 	struct got_pathlist_entry *pe;
9696 
9697 	/*
9698 	 * Clear error indication from any of the path arguments which
9699 	 * would cause this file index entry to be displayed.
9700 	 */
9701 	TAILQ_FOREACH(pe, paths, entry) {
9702 		if (got_path_cmp(path, pe->path, strlen(path),
9703 		    pe->path_len) == 0 ||
9704 		    got_path_is_child(path, pe->path, pe->path_len))
9705 			pe->data = NULL; /* no error */
9706 	}
9707 
9708 	printf(GOT_COMMIT_SEP_STR);
9709 	if (S_ISLNK(mode))
9710 		printf("symlink: %s\n", path);
9711 	else if (S_ISREG(mode)) {
9712 		printf("file: %s\n", path);
9713 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
9714 	} else if (S_ISDIR(mode))
9715 		printf("directory: %s\n", path);
9716 	else
9717 		printf("something: %s\n", path);
9718 
9719 	tm = localtime_r(&mtime, &mytm);
9720 	if (tm == NULL)
9721 		return NULL;
9722 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) >= sizeof(datebuf))
9723 		return got_error(GOT_ERR_NO_SPACE);
9724 	printf("timestamp: %s\n", datebuf);
9725 
9726 	if (blob_id) {
9727 		err = got_object_id_str(&id_str, blob_id);
9728 		if (err)
9729 			return err;
9730 		printf("based on blob: %s\n", id_str);
9731 		free(id_str);
9732 	}
9733 
9734 	if (staged_blob_id) {
9735 		err = got_object_id_str(&id_str, staged_blob_id);
9736 		if (err)
9737 			return err;
9738 		printf("based on staged blob: %s\n", id_str);
9739 		free(id_str);
9740 	}
9741 
9742 	if (commit_id) {
9743 		err = got_object_id_str(&id_str, commit_id);
9744 		if (err)
9745 			return err;
9746 		printf("based on commit: %s\n", id_str);
9747 		free(id_str);
9748 	}
9749 
9750 	return NULL;
9751 }
9752 
9753 static const struct got_error *
9754 cmd_info(int argc, char *argv[])
9755 {
9756 	const struct got_error *error = NULL;
9757 	struct got_worktree *worktree = NULL;
9758 	char *cwd = NULL, *id_str = NULL;
9759 	struct got_pathlist_head paths;
9760 	struct got_pathlist_entry *pe;
9761 	char *uuidstr = NULL;
9762 	int ch, show_files = 0;
9763 
9764 	TAILQ_INIT(&paths);
9765 
9766 	while ((ch = getopt(argc, argv, "")) != -1) {
9767 		switch (ch) {
9768 		default:
9769 			usage_info();
9770 			/* NOTREACHED */
9771 		}
9772 	}
9773 
9774 	argc -= optind;
9775 	argv += optind;
9776 
9777 #ifndef PROFILE
9778 	if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
9779 	    NULL) == -1)
9780 		err(1, "pledge");
9781 #endif
9782 	cwd = getcwd(NULL, 0);
9783 	if (cwd == NULL) {
9784 		error = got_error_from_errno("getcwd");
9785 		goto done;
9786 	}
9787 
9788 	error = got_worktree_open(&worktree, cwd);
9789 	if (error) {
9790 		if (error->code == GOT_ERR_NOT_WORKTREE)
9791 			error = wrap_not_worktree_error(error, "status", cwd);
9792 		goto done;
9793 	}
9794 
9795 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
9796 	if (error)
9797 		goto done;
9798 
9799 	if (argc >= 1) {
9800 		error = get_worktree_paths_from_argv(&paths, argc, argv,
9801 		    worktree);
9802 		if (error)
9803 			goto done;
9804 		show_files = 1;
9805 	}
9806 
9807 	error = got_object_id_str(&id_str,
9808 	    got_worktree_get_base_commit_id(worktree));
9809 	if (error)
9810 		goto done;
9811 
9812 	error = got_worktree_get_uuid(&uuidstr, worktree);
9813 	if (error)
9814 		goto done;
9815 
9816 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
9817 	printf("work tree base commit: %s\n", id_str);
9818 	printf("work tree path prefix: %s\n",
9819 	    got_worktree_get_path_prefix(worktree));
9820 	printf("work tree branch reference: %s\n",
9821 	    got_worktree_get_head_ref_name(worktree));
9822 	printf("work tree UUID: %s\n", uuidstr);
9823 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
9824 
9825 	if (show_files) {
9826 		struct got_pathlist_entry *pe;
9827 		TAILQ_FOREACH(pe, &paths, entry) {
9828 			if (pe->path_len == 0)
9829 				continue;
9830 			/*
9831 			 * Assume this path will fail. This will be corrected
9832 			 * in print_path_info() in case the path does suceeed.
9833 			 */
9834 			pe->data = (void *)got_error_path(pe->path,
9835 			    GOT_ERR_BAD_PATH);
9836 		}
9837 		error = got_worktree_path_info(worktree, &paths,
9838 		    print_path_info, &paths, check_cancelled, NULL);
9839 		if (error)
9840 			goto done;
9841 		TAILQ_FOREACH(pe, &paths, entry) {
9842 			if (pe->data != NULL) {
9843 				error = pe->data; /* bad path */
9844 				break;
9845 			}
9846 		}
9847 	}
9848 done:
9849 	TAILQ_FOREACH(pe, &paths, entry)
9850 		free((char *)pe->path);
9851 	got_pathlist_free(&paths);
9852 	free(cwd);
9853 	free(id_str);
9854 	free(uuidstr);
9855 	return error;
9856 }