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_send.h"
55 #include "got_blame.h"
56 #include "got_privsep.h"
57 #include "got_opentemp.h"
58 #include "got_gotconfig.h"
59 
60 #ifndef nitems
61 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
62 #endif
63 
64 static volatile sig_atomic_t sigint_received;
65 static volatile sig_atomic_t sigpipe_received;
66 
67 static void
68 catch_sigint(int signo)
69 {
70 	sigint_received = 1;
71 }
72 
73 static void
74 catch_sigpipe(int signo)
75 {
76 	sigpipe_received = 1;
77 }
78 
79 
80 struct got_cmd {
81 	const char	*cmd_name;
82 	const struct got_error *(*cmd_main)(int, char *[]);
83 	void		(*cmd_usage)(void);
84 	const char	*cmd_alias;
85 };
86 
87 __dead static void	usage(int, int);
88 __dead static void	usage_init(void);
89 __dead static void	usage_import(void);
90 __dead static void	usage_clone(void);
91 __dead static void	usage_fetch(void);
92 __dead static void	usage_checkout(void);
93 __dead static void	usage_update(void);
94 __dead static void	usage_log(void);
95 __dead static void	usage_diff(void);
96 __dead static void	usage_blame(void);
97 __dead static void	usage_tree(void);
98 __dead static void	usage_status(void);
99 __dead static void	usage_ref(void);
100 __dead static void	usage_branch(void);
101 __dead static void	usage_tag(void);
102 __dead static void	usage_add(void);
103 __dead static void	usage_remove(void);
104 __dead static void	usage_revert(void);
105 __dead static void	usage_commit(void);
106 __dead static void	usage_send(void);
107 __dead static void	usage_cherrypick(void);
108 __dead static void	usage_backout(void);
109 __dead static void	usage_rebase(void);
110 __dead static void	usage_histedit(void);
111 __dead static void	usage_integrate(void);
112 __dead static void	usage_stage(void);
113 __dead static void	usage_unstage(void);
114 __dead static void	usage_cat(void);
115 __dead static void	usage_info(void);
116 
117 static const struct got_error*		cmd_init(int, char *[]);
118 static const struct got_error*		cmd_import(int, char *[]);
119 static const struct got_error*		cmd_clone(int, char *[]);
120 static const struct got_error*		cmd_fetch(int, char *[]);
121 static const struct got_error*		cmd_checkout(int, char *[]);
122 static const struct got_error*		cmd_update(int, char *[]);
123 static const struct got_error*		cmd_log(int, char *[]);
124 static const struct got_error*		cmd_diff(int, char *[]);
125 static const struct got_error*		cmd_blame(int, char *[]);
126 static const struct got_error*		cmd_tree(int, char *[]);
127 static const struct got_error*		cmd_status(int, char *[]);
128 static const struct got_error*		cmd_ref(int, char *[]);
129 static const struct got_error*		cmd_branch(int, char *[]);
130 static const struct got_error*		cmd_tag(int, char *[]);
131 static const struct got_error*		cmd_add(int, char *[]);
132 static const struct got_error*		cmd_remove(int, char *[]);
133 static const struct got_error*		cmd_revert(int, char *[]);
134 static const struct got_error*		cmd_commit(int, char *[]);
135 static const struct got_error*		cmd_send(int, char *[]);
136 static const struct got_error*		cmd_cherrypick(int, char *[]);
137 static const struct got_error*		cmd_backout(int, char *[]);
138 static const struct got_error*		cmd_rebase(int, char *[]);
139 static const struct got_error*		cmd_histedit(int, char *[]);
140 static const struct got_error*		cmd_integrate(int, char *[]);
141 static const struct got_error*		cmd_stage(int, char *[]);
142 static const struct got_error*		cmd_unstage(int, char *[]);
143 static const struct got_error*		cmd_cat(int, char *[]);
144 static const struct got_error*		cmd_info(int, char *[]);
145 
146 static struct got_cmd got_commands[] = {
147 	{ "init",	cmd_init,	usage_init,	"" },
148 	{ "import",	cmd_import,	usage_import,	"im" },
149 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
150 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
151 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
152 	{ "update",	cmd_update,	usage_update,	"up" },
153 	{ "log",	cmd_log,	usage_log,	"" },
154 	{ "diff",	cmd_diff,	usage_diff,	"di" },
155 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
156 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
157 	{ "status",	cmd_status,	usage_status,	"st" },
158 	{ "ref",	cmd_ref,	usage_ref,	"" },
159 	{ "branch",	cmd_branch,	usage_branch,	"br" },
160 	{ "tag",	cmd_tag,	usage_tag,	"" },
161 	{ "add",	cmd_add,	usage_add,	"" },
162 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
163 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
164 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
165 	{ "send",	cmd_send,	usage_send,	"se" },
166 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
167 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
168 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
169 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
170 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
171 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
172 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
173 	{ "cat",	cmd_cat,	usage_cat,	"" },
174 	{ "info",	cmd_info,	usage_info,	"" },
175 };
176 
177 static void
178 list_commands(FILE *fp)
179 {
180 	size_t i;
181 
182 	fprintf(fp, "commands:");
183 	for (i = 0; i < nitems(got_commands); i++) {
184 		struct got_cmd *cmd = &got_commands[i];
185 		fprintf(fp, " %s", cmd->cmd_name);
186 	}
187 	fputc('\n', fp);
188 }
189 
190 __dead static void
191 option_conflict(char a, char b)
192 {
193 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
194 }
195 
196 int
197 main(int argc, char *argv[])
198 {
199 	struct got_cmd *cmd;
200 	size_t i;
201 	int ch;
202 	int hflag = 0, Vflag = 0;
203 	static struct option longopts[] = {
204 	    { "version", no_argument, NULL, 'V' },
205 	    { NULL, 0, NULL, 0 }
206 	};
207 
208 	setlocale(LC_CTYPE, "");
209 
210 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
211 		switch (ch) {
212 		case 'h':
213 			hflag = 1;
214 			break;
215 		case 'V':
216 			Vflag = 1;
217 			break;
218 		default:
219 			usage(hflag, 1);
220 			/* NOTREACHED */
221 		}
222 	}
223 
224 	argc -= optind;
225 	argv += optind;
226 	optind = 1;
227 	optreset = 1;
228 
229 	if (Vflag) {
230 		got_version_print_str();
231 		return 0;
232 	}
233 
234 	if (argc <= 0)
235 		usage(hflag, hflag ? 0 : 1);
236 
237 	signal(SIGINT, catch_sigint);
238 	signal(SIGPIPE, catch_sigpipe);
239 
240 	for (i = 0; i < nitems(got_commands); i++) {
241 		const struct got_error *error;
242 
243 		cmd = &got_commands[i];
244 
245 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
246 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
247 			continue;
248 
249 		if (hflag)
250 			got_commands[i].cmd_usage();
251 
252 		error = got_commands[i].cmd_main(argc, argv);
253 		if (error && error->code != GOT_ERR_CANCELLED &&
254 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
255 		    !(sigpipe_received &&
256 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
257 		    !(sigint_received &&
258 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
259 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
260 			return 1;
261 		}
262 
263 		return 0;
264 	}
265 
266 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
267 	list_commands(stderr);
268 	return 1;
269 }
270 
271 __dead static void
272 usage(int hflag, int status)
273 {
274 	FILE *fp = (status == 0) ? stdout : stderr;
275 
276 	fprintf(fp, "usage: %s [-h] [-V | --version] command [arg ...]\n",
277 	    getprogname());
278 	if (hflag)
279 		list_commands(fp);
280 	exit(status);
281 }
282 
283 static const struct got_error *
284 get_editor(char **abspath)
285 {
286 	const struct got_error *err = NULL;
287 	const char *editor;
288 
289 	*abspath = NULL;
290 
291 	editor = getenv("VISUAL");
292 	if (editor == NULL)
293 		editor = getenv("EDITOR");
294 
295 	if (editor) {
296 		err = got_path_find_prog(abspath, editor);
297 		if (err)
298 			return err;
299 	}
300 
301 	if (*abspath == NULL) {
302 		*abspath = strdup("/bin/ed");
303 		if (*abspath == NULL)
304 			return got_error_from_errno("strdup");
305 	}
306 
307 	return NULL;
308 }
309 
310 static const struct got_error *
311 apply_unveil(const char *repo_path, int repo_read_only,
312     const char *worktree_path)
313 {
314 	const struct got_error *err;
315 
316 #ifdef PROFILE
317 	if (unveil("gmon.out", "rwc") != 0)
318 		return got_error_from_errno2("unveil", "gmon.out");
319 #endif
320 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
321 		return got_error_from_errno2("unveil", repo_path);
322 
323 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
324 		return got_error_from_errno2("unveil", worktree_path);
325 
326 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
327 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
328 
329 	err = got_privsep_unveil_exec_helpers();
330 	if (err != NULL)
331 		return err;
332 
333 	if (unveil(NULL, NULL) != 0)
334 		return got_error_from_errno("unveil");
335 
336 	return NULL;
337 }
338 
339 __dead static void
340 usage_init(void)
341 {
342 	fprintf(stderr, "usage: %s init repository-path\n", getprogname());
343 	exit(1);
344 }
345 
346 static const struct got_error *
347 cmd_init(int argc, char *argv[])
348 {
349 	const struct got_error *error = NULL;
350 	char *repo_path = NULL;
351 	int ch;
352 
353 	while ((ch = getopt(argc, argv, "")) != -1) {
354 		switch (ch) {
355 		default:
356 			usage_init();
357 			/* NOTREACHED */
358 		}
359 	}
360 
361 	argc -= optind;
362 	argv += optind;
363 
364 #ifndef PROFILE
365 	if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
366 		err(1, "pledge");
367 #endif
368 	if (argc != 1)
369 		usage_init();
370 
371 	repo_path = strdup(argv[0]);
372 	if (repo_path == NULL)
373 		return got_error_from_errno("strdup");
374 
375 	got_path_strip_trailing_slashes(repo_path);
376 
377 	error = got_path_mkdir(repo_path);
378 	if (error &&
379 	    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
380 		goto done;
381 
382 	error = apply_unveil(repo_path, 0, NULL);
383 	if (error)
384 		goto done;
385 
386 	error = got_repo_init(repo_path);
387 done:
388 	free(repo_path);
389 	return error;
390 }
391 
392 __dead static void
393 usage_import(void)
394 {
395 	fprintf(stderr, "usage: %s import [-b branch] [-m message] "
396 	    "[-r repository-path] [-I pattern] path\n", getprogname());
397 	exit(1);
398 }
399 
400 int
401 spawn_editor(const char *editor, const char *file)
402 {
403 	pid_t pid;
404 	sig_t sighup, sigint, sigquit;
405 	int st = -1;
406 
407 	sighup = signal(SIGHUP, SIG_IGN);
408 	sigint = signal(SIGINT, SIG_IGN);
409 	sigquit = signal(SIGQUIT, SIG_IGN);
410 
411 	switch (pid = fork()) {
412 	case -1:
413 		goto doneediting;
414 	case 0:
415 		execl(editor, editor, file, (char *)NULL);
416 		_exit(127);
417 	}
418 
419 	while (waitpid(pid, &st, 0) == -1)
420 		if (errno != EINTR)
421 			break;
422 
423 doneediting:
424 	(void)signal(SIGHUP, sighup);
425 	(void)signal(SIGINT, sigint);
426 	(void)signal(SIGQUIT, sigquit);
427 
428 	if (!WIFEXITED(st)) {
429 		errno = EINTR;
430 		return -1;
431 	}
432 
433 	return WEXITSTATUS(st);
434 }
435 
436 static const struct got_error *
437 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
438     const char *initial_content, size_t initial_content_len,
439     int require_modification)
440 {
441 	const struct got_error *err = NULL;
442 	char *line = NULL;
443 	size_t linesize = 0;
444 	ssize_t linelen;
445 	struct stat st, st2;
446 	FILE *fp = NULL;
447 	size_t len, logmsg_len;
448 	char *initial_content_stripped = NULL, *buf = NULL, *s;
449 
450 	*logmsg = NULL;
451 
452 	if (stat(logmsg_path, &st) == -1)
453 		return got_error_from_errno2("stat", logmsg_path);
454 
455 	if (spawn_editor(editor, logmsg_path) == -1)
456 		return got_error_from_errno("failed spawning editor");
457 
458 	if (stat(logmsg_path, &st2) == -1)
459 		return got_error_from_errno("stat");
460 
461 	if (require_modification &&
462 	    st.st_mtime == st2.st_mtime && st.st_size == st2.st_size)
463 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
464 		    "no changes made to commit message, aborting");
465 
466 	/*
467 	 * Set up a stripped version of the initial content without comments
468 	 * and blank lines. We need this in order to check if the message
469 	 * has in fact been edited.
470 	 */
471 	initial_content_stripped = malloc(initial_content_len + 1);
472 	if (initial_content_stripped == NULL)
473 		return got_error_from_errno("malloc");
474 	initial_content_stripped[0] = '\0';
475 
476 	buf = strdup(initial_content);
477 	if (buf == NULL) {
478 		err = got_error_from_errno("strdup");
479 		goto done;
480 	}
481 	s = buf;
482 	len = 0;
483 	while ((line = strsep(&s, "\n")) != NULL) {
484 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
485 			continue; /* remove comments and leading empty lines */
486 		len = strlcat(initial_content_stripped, line,
487 		    initial_content_len + 1);
488 		if (len >= initial_content_len + 1) {
489 			err = got_error(GOT_ERR_NO_SPACE);
490 			goto done;
491 		}
492 	}
493 	while (len > 0 && initial_content_stripped[len - 1] == '\n') {
494 		initial_content_stripped[len - 1] = '\0';
495 		len--;
496 	}
497 
498 	logmsg_len = st2.st_size;
499 	*logmsg = malloc(logmsg_len + 1);
500 	if (*logmsg == NULL)
501 		return got_error_from_errno("malloc");
502 	(*logmsg)[0] = '\0';
503 
504 	fp = fopen(logmsg_path, "r");
505 	if (fp == NULL) {
506 		err = got_error_from_errno("fopen");
507 		goto done;
508 	}
509 
510 	len = 0;
511 	while ((linelen = getline(&line, &linesize, fp)) != -1) {
512 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
513 			continue; /* remove comments and leading empty lines */
514 		len = strlcat(*logmsg, line, logmsg_len + 1);
515 		if (len >= logmsg_len + 1) {
516 			err = got_error(GOT_ERR_NO_SPACE);
517 			goto done;
518 		}
519 	}
520 	free(line);
521 	if (ferror(fp)) {
522 		err = got_ferror(fp, GOT_ERR_IO);
523 		goto done;
524 	}
525 	while (len > 0 && (*logmsg)[len - 1] == '\n') {
526 		(*logmsg)[len - 1] = '\0';
527 		len--;
528 	}
529 
530 	if (len == 0) {
531 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
532 		    "commit message cannot be empty, aborting");
533 		goto done;
534 	}
535 	if (require_modification &&
536 	    strcmp(*logmsg, initial_content_stripped) == 0)
537 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
538 		    "no changes made to commit message, aborting");
539 done:
540 	free(initial_content_stripped);
541 	free(buf);
542 	if (fp && fclose(fp) == EOF && err == NULL)
543 		err = got_error_from_errno("fclose");
544 	if (err) {
545 		free(*logmsg);
546 		*logmsg = NULL;
547 	}
548 	return err;
549 }
550 
551 static const struct got_error *
552 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
553     const char *path_dir, const char *branch_name)
554 {
555 	char *initial_content = NULL;
556 	const struct got_error *err = NULL;
557 	int initial_content_len;
558 	int fd = -1;
559 
560 	initial_content_len = asprintf(&initial_content,
561 	    "\n# %s to be imported to branch %s\n", path_dir,
562 	    branch_name);
563 	if (initial_content_len == -1)
564 		return got_error_from_errno("asprintf");
565 
566 	err = got_opentemp_named_fd(logmsg_path, &fd,
567 	    GOT_TMPDIR_STR "/got-importmsg");
568 	if (err)
569 		goto done;
570 
571 	if (write(fd, initial_content, initial_content_len) == -1) {
572 		err = got_error_from_errno2("write", *logmsg_path);
573 		goto done;
574 	}
575 
576 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
577 	    initial_content_len, 1);
578 done:
579 	if (fd != -1 && close(fd) == -1 && err == NULL)
580 		err = got_error_from_errno2("close", *logmsg_path);
581 	free(initial_content);
582 	if (err) {
583 		free(*logmsg_path);
584 		*logmsg_path = NULL;
585 	}
586 	return err;
587 }
588 
589 static const struct got_error *
590 import_progress(void *arg, const char *path)
591 {
592 	printf("A  %s\n", path);
593 	return NULL;
594 }
595 
596 static const struct got_error *
597 get_author(char **author, struct got_repository *repo,
598     struct got_worktree *worktree)
599 {
600 	const struct got_error *err = NULL;
601 	const char *got_author = NULL, *name, *email;
602 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
603 
604 	*author = NULL;
605 
606 	if (worktree)
607 		worktree_conf = got_worktree_get_gotconfig(worktree);
608 	repo_conf = got_repo_get_gotconfig(repo);
609 
610 	/*
611 	 * Priority of potential author information sources, from most
612 	 * significant to least significant:
613 	 * 1) work tree's .got/got.conf file
614 	 * 2) repository's got.conf file
615 	 * 3) repository's git config file
616 	 * 4) environment variables
617 	 * 5) global git config files (in user's home directory or /etc)
618 	 */
619 
620 	if (worktree_conf)
621 		got_author = got_gotconfig_get_author(worktree_conf);
622 	if (got_author == NULL)
623 		got_author = got_gotconfig_get_author(repo_conf);
624 	if (got_author == NULL) {
625 		name = got_repo_get_gitconfig_author_name(repo);
626 		email = got_repo_get_gitconfig_author_email(repo);
627 		if (name && email) {
628 			if (asprintf(author, "%s <%s>", name, email) == -1)
629 				return got_error_from_errno("asprintf");
630 			return NULL;
631 		}
632 
633 		got_author = getenv("GOT_AUTHOR");
634 		if (got_author == NULL) {
635 			name = got_repo_get_global_gitconfig_author_name(repo);
636 			email = got_repo_get_global_gitconfig_author_email(
637 			    repo);
638 			if (name && email) {
639 				if (asprintf(author, "%s <%s>", name, email)
640 				    == -1)
641 					return got_error_from_errno("asprintf");
642 				return NULL;
643 			}
644 			/* TODO: Look up user in password database? */
645 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
646 		}
647 	}
648 
649 	*author = strdup(got_author);
650 	if (*author == NULL)
651 		return got_error_from_errno("strdup");
652 
653 	/*
654 	 * Really dumb email address check; we're only doing this to
655 	 * avoid git's object parser breaking on commits we create.
656 	 */
657 	while (*got_author && *got_author != '<')
658 		got_author++;
659 	if (*got_author != '<') {
660 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
661 		goto done;
662 	}
663 	while (*got_author && *got_author != '@')
664 		got_author++;
665 	if (*got_author != '@') {
666 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
667 		goto done;
668 	}
669 	while (*got_author && *got_author != '>')
670 		got_author++;
671 	if (*got_author != '>')
672 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
673 done:
674 	if (err) {
675 		free(*author);
676 		*author = NULL;
677 	}
678 	return err;
679 }
680 
681 static const struct got_error *
682 get_gitconfig_path(char **gitconfig_path)
683 {
684 	const char *homedir = getenv("HOME");
685 
686 	*gitconfig_path = NULL;
687 	if (homedir) {
688 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
689 			return got_error_from_errno("asprintf");
690 
691 	}
692 	return NULL;
693 }
694 
695 static const struct got_error *
696 cmd_import(int argc, char *argv[])
697 {
698 	const struct got_error *error = NULL;
699 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
700 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
701 	const char *branch_name = "main";
702 	char *refname = NULL, *id_str = NULL, *logmsg_path = NULL;
703 	struct got_repository *repo = NULL;
704 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
705 	struct got_object_id *new_commit_id = NULL;
706 	int ch;
707 	struct got_pathlist_head ignores;
708 	struct got_pathlist_entry *pe;
709 	int preserve_logmsg = 0;
710 
711 	TAILQ_INIT(&ignores);
712 
713 	while ((ch = getopt(argc, argv, "b:m:r:I:")) != -1) {
714 		switch (ch) {
715 		case 'b':
716 			branch_name = optarg;
717 			break;
718 		case 'm':
719 			logmsg = strdup(optarg);
720 			if (logmsg == NULL) {
721 				error = got_error_from_errno("strdup");
722 				goto done;
723 			}
724 			break;
725 		case 'r':
726 			repo_path = realpath(optarg, NULL);
727 			if (repo_path == NULL) {
728 				error = got_error_from_errno2("realpath",
729 				    optarg);
730 				goto done;
731 			}
732 			break;
733 		case 'I':
734 			if (optarg[0] == '\0')
735 				break;
736 			error = got_pathlist_insert(&pe, &ignores, optarg,
737 			    NULL);
738 			if (error)
739 				goto done;
740 			break;
741 		default:
742 			usage_import();
743 			/* NOTREACHED */
744 		}
745 	}
746 
747 	argc -= optind;
748 	argv += optind;
749 
750 #ifndef PROFILE
751 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
752 	    "unveil",
753 	    NULL) == -1)
754 		err(1, "pledge");
755 #endif
756 	if (argc != 1)
757 		usage_import();
758 
759 	if (repo_path == NULL) {
760 		repo_path = getcwd(NULL, 0);
761 		if (repo_path == NULL)
762 			return got_error_from_errno("getcwd");
763 	}
764 	got_path_strip_trailing_slashes(repo_path);
765 	error = get_gitconfig_path(&gitconfig_path);
766 	if (error)
767 		goto done;
768 	error = got_repo_open(&repo, repo_path, gitconfig_path);
769 	if (error)
770 		goto done;
771 
772 	error = get_author(&author, repo, NULL);
773 	if (error)
774 		return error;
775 
776 	/*
777 	 * Don't let the user create a branch name with a leading '-'.
778 	 * While technically a valid reference name, this case is usually
779 	 * an unintended typo.
780 	 */
781 	if (branch_name[0] == '-')
782 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
783 
784 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
785 		error = got_error_from_errno("asprintf");
786 		goto done;
787 	}
788 
789 	error = got_ref_open(&branch_ref, repo, refname, 0);
790 	if (error) {
791 		if (error->code != GOT_ERR_NOT_REF)
792 			goto done;
793 	} else {
794 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
795 		    "import target branch already exists");
796 		goto done;
797 	}
798 
799 	path_dir = realpath(argv[0], NULL);
800 	if (path_dir == NULL) {
801 		error = got_error_from_errno2("realpath", argv[0]);
802 		goto done;
803 	}
804 	got_path_strip_trailing_slashes(path_dir);
805 
806 	/*
807 	 * unveil(2) traverses exec(2); if an editor is used we have
808 	 * to apply unveil after the log message has been written.
809 	 */
810 	if (logmsg == NULL || strlen(logmsg) == 0) {
811 		error = get_editor(&editor);
812 		if (error)
813 			goto done;
814 		free(logmsg);
815 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
816 		    path_dir, refname);
817 		if (error) {
818 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
819 			    logmsg_path != NULL)
820 				preserve_logmsg = 1;
821 			goto done;
822 		}
823 	}
824 
825 	if (unveil(path_dir, "r") != 0) {
826 		error = got_error_from_errno2("unveil", path_dir);
827 		if (logmsg_path)
828 			preserve_logmsg = 1;
829 		goto done;
830 	}
831 
832 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
833 	if (error) {
834 		if (logmsg_path)
835 			preserve_logmsg = 1;
836 		goto done;
837 	}
838 
839 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
840 	    author, &ignores, repo, import_progress, NULL);
841 	if (error) {
842 		if (logmsg_path)
843 			preserve_logmsg = 1;
844 		goto done;
845 	}
846 
847 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
848 	if (error) {
849 		if (logmsg_path)
850 			preserve_logmsg = 1;
851 		goto done;
852 	}
853 
854 	error = got_ref_write(branch_ref, repo);
855 	if (error) {
856 		if (logmsg_path)
857 			preserve_logmsg = 1;
858 		goto done;
859 	}
860 
861 	error = got_object_id_str(&id_str, new_commit_id);
862 	if (error) {
863 		if (logmsg_path)
864 			preserve_logmsg = 1;
865 		goto done;
866 	}
867 
868 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
869 	if (error) {
870 		if (error->code != GOT_ERR_NOT_REF) {
871 			if (logmsg_path)
872 				preserve_logmsg = 1;
873 			goto done;
874 		}
875 
876 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
877 		    branch_ref);
878 		if (error) {
879 			if (logmsg_path)
880 				preserve_logmsg = 1;
881 			goto done;
882 		}
883 
884 		error = got_ref_write(head_ref, repo);
885 		if (error) {
886 			if (logmsg_path)
887 				preserve_logmsg = 1;
888 			goto done;
889 		}
890 	}
891 
892 	printf("Created branch %s with commit %s\n",
893 	    got_ref_get_name(branch_ref), id_str);
894 done:
895 	if (preserve_logmsg) {
896 		fprintf(stderr, "%s: log message preserved in %s\n",
897 		    getprogname(), logmsg_path);
898 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
899 		error = got_error_from_errno2("unlink", logmsg_path);
900 	free(logmsg);
901 	free(logmsg_path);
902 	free(repo_path);
903 	free(editor);
904 	free(refname);
905 	free(new_commit_id);
906 	free(id_str);
907 	free(author);
908 	free(gitconfig_path);
909 	if (branch_ref)
910 		got_ref_close(branch_ref);
911 	if (head_ref)
912 		got_ref_close(head_ref);
913 	return error;
914 }
915 
916 __dead static void
917 usage_clone(void)
918 {
919 	fprintf(stderr, "usage: %s clone [-a] [-b branch] [-l] [-m] [-q] [-v] "
920 	    "[-R reference] repository-url [directory]\n", getprogname());
921 	exit(1);
922 }
923 
924 struct got_fetch_progress_arg {
925 	char last_scaled_size[FMT_SCALED_STRSIZE];
926 	int last_p_indexed;
927 	int last_p_resolved;
928 	int verbosity;
929 
930 	struct got_repository *repo;
931 
932 	int create_configs;
933 	int configs_created;
934 	struct {
935 		struct got_pathlist_head *symrefs;
936 		struct got_pathlist_head *wanted_branches;
937 		struct got_pathlist_head *wanted_refs;
938 		const char *proto;
939 		const char *host;
940 		const char *port;
941 		const char *remote_repo_path;
942 		const char *git_url;
943 		int fetch_all_branches;
944 		int mirror_references;
945 	} config_info;
946 };
947 
948 /* XXX forward declaration */
949 static const struct got_error *
950 create_config_files(const char *proto, const char *host, const char *port,
951     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
952     int mirror_references, struct got_pathlist_head *symrefs,
953     struct got_pathlist_head *wanted_branches,
954     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
955 
956 static const struct got_error *
957 fetch_progress(void *arg, const char *message, off_t packfile_size,
958     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
959 {
960 	const struct got_error *err = NULL;
961 	struct got_fetch_progress_arg *a = arg;
962 	char scaled_size[FMT_SCALED_STRSIZE];
963 	int p_indexed, p_resolved;
964 	int print_size = 0, print_indexed = 0, print_resolved = 0;
965 
966 	/*
967 	 * In order to allow a failed clone to be resumed with 'got fetch'
968 	 * we try to create configuration files as soon as possible.
969 	 * Once the server has sent information about its default branch
970 	 * we have all required information.
971 	 */
972 	if (a->create_configs && !a->configs_created &&
973 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
974 		err = create_config_files(a->config_info.proto,
975 		    a->config_info.host, a->config_info.port,
976 		    a->config_info.remote_repo_path,
977 		    a->config_info.git_url,
978 		    a->config_info.fetch_all_branches,
979 		    a->config_info.mirror_references,
980 		    a->config_info.symrefs,
981 		    a->config_info.wanted_branches,
982 		    a->config_info.wanted_refs, a->repo);
983 		if (err)
984 			return err;
985 		a->configs_created = 1;
986 	}
987 
988 	if (a->verbosity < 0)
989 		return NULL;
990 
991 	if (message && message[0] != '\0') {
992 		printf("\rserver: %s", message);
993 		fflush(stdout);
994 		return NULL;
995 	}
996 
997 	if (packfile_size > 0 || nobj_indexed > 0) {
998 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
999 		    (a->last_scaled_size[0] == '\0' ||
1000 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1001 			print_size = 1;
1002 			if (strlcpy(a->last_scaled_size, scaled_size,
1003 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1004 				return got_error(GOT_ERR_NO_SPACE);
1005 		}
1006 		if (nobj_indexed > 0) {
1007 			p_indexed = (nobj_indexed * 100) / nobj_total;
1008 			if (p_indexed != a->last_p_indexed) {
1009 				a->last_p_indexed = p_indexed;
1010 				print_indexed = 1;
1011 				print_size = 1;
1012 			}
1013 		}
1014 		if (nobj_resolved > 0) {
1015 			p_resolved = (nobj_resolved * 100) /
1016 			    (nobj_total - nobj_loose);
1017 			if (p_resolved != a->last_p_resolved) {
1018 				a->last_p_resolved = p_resolved;
1019 				print_resolved = 1;
1020 				print_indexed = 1;
1021 				print_size = 1;
1022 			}
1023 		}
1024 
1025 	}
1026 	if (print_size || print_indexed || print_resolved)
1027 		printf("\r");
1028 	if (print_size)
1029 		printf("%*s fetched", FMT_SCALED_STRSIZE, scaled_size);
1030 	if (print_indexed)
1031 		printf("; indexing %d%%", p_indexed);
1032 	if (print_resolved)
1033 		printf("; resolving deltas %d%%", p_resolved);
1034 	if (print_size || print_indexed || print_resolved)
1035 		fflush(stdout);
1036 
1037 	return NULL;
1038 }
1039 
1040 static const struct got_error *
1041 create_symref(const char *refname, struct got_reference *target_ref,
1042     int verbosity, struct got_repository *repo)
1043 {
1044 	const struct got_error *err;
1045 	struct got_reference *head_symref;
1046 
1047 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1048 	if (err)
1049 		return err;
1050 
1051 	err = got_ref_write(head_symref, repo);
1052 	if (err == NULL && verbosity > 0) {
1053 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1054 		    got_ref_get_name(target_ref));
1055 	}
1056 	got_ref_close(head_symref);
1057 	return err;
1058 }
1059 
1060 static const struct got_error *
1061 list_remote_refs(struct got_pathlist_head *symrefs,
1062     struct got_pathlist_head *refs)
1063 {
1064 	const struct got_error *err;
1065 	struct got_pathlist_entry *pe;
1066 
1067 	TAILQ_FOREACH(pe, symrefs, entry) {
1068 		const char *refname = pe->path;
1069 		const char *targetref = pe->data;
1070 
1071 		printf("%s: %s\n", refname, targetref);
1072 	}
1073 
1074 	TAILQ_FOREACH(pe, refs, entry) {
1075 		const char *refname = pe->path;
1076 		struct got_object_id *id = pe->data;
1077 		char *id_str;
1078 
1079 		err = got_object_id_str(&id_str, id);
1080 		if (err)
1081 			return err;
1082 		printf("%s: %s\n", refname, id_str);
1083 		free(id_str);
1084 	}
1085 
1086 	return NULL;
1087 }
1088 
1089 static const struct got_error *
1090 create_ref(const char *refname, struct got_object_id *id,
1091     int verbosity, struct got_repository *repo)
1092 {
1093 	const struct got_error *err = NULL;
1094 	struct got_reference *ref;
1095 	char *id_str;
1096 
1097 	err = got_object_id_str(&id_str, id);
1098 	if (err)
1099 		return err;
1100 
1101 	err = got_ref_alloc(&ref, refname, id);
1102 	if (err)
1103 		goto done;
1104 
1105 	err = got_ref_write(ref, repo);
1106 	got_ref_close(ref);
1107 
1108 	if (err == NULL && verbosity >= 0)
1109 		printf("Created reference %s: %s\n", refname, id_str);
1110 done:
1111 	free(id_str);
1112 	return err;
1113 }
1114 
1115 static int
1116 match_wanted_ref(const char *refname, const char *wanted_ref)
1117 {
1118 	if (strncmp(refname, "refs/", 5) != 0)
1119 		return 0;
1120 	refname += 5;
1121 
1122 	/*
1123 	 * Prevent fetching of references that won't make any
1124 	 * sense outside of the remote repository's context.
1125 	 */
1126 	if (strncmp(refname, "got/", 4) == 0)
1127 		return 0;
1128 	if (strncmp(refname, "remotes/", 8) == 0)
1129 		return 0;
1130 
1131 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1132 		wanted_ref += 5;
1133 
1134 	/* Allow prefix match. */
1135 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1136 		return 1;
1137 
1138 	/* Allow exact match. */
1139 	return (strcmp(refname, wanted_ref) == 0);
1140 }
1141 
1142 static int
1143 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1144 {
1145 	struct got_pathlist_entry *pe;
1146 
1147 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1148 		if (match_wanted_ref(refname, pe->path))
1149 			return 1;
1150 	}
1151 
1152 	return 0;
1153 }
1154 
1155 static const struct got_error *
1156 create_wanted_ref(const char *refname, struct got_object_id *id,
1157     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1158 {
1159 	const struct got_error *err;
1160 	char *remote_refname;
1161 
1162 	if (strncmp("refs/", refname, 5) == 0)
1163 		refname += 5;
1164 
1165 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1166 	    remote_repo_name, refname) == -1)
1167 		return got_error_from_errno("asprintf");
1168 
1169 	err = create_ref(remote_refname, id, verbosity, repo);
1170 	free(remote_refname);
1171 	return err;
1172 }
1173 
1174 static const struct got_error *
1175 create_gotconfig(const char *proto, const char *host, const char *port,
1176     const char *remote_repo_path, const char *default_branch,
1177     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1178     struct got_pathlist_head *wanted_refs, int mirror_references,
1179     struct got_repository *repo)
1180 {
1181 	const struct got_error *err = NULL;
1182 	char *gotconfig_path = NULL;
1183 	char *gotconfig = NULL;
1184 	FILE *gotconfig_file = NULL;
1185 	const char *branchname = NULL;
1186 	char *branches = NULL, *refs = NULL;
1187 	ssize_t n;
1188 
1189 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1190 		struct got_pathlist_entry *pe;
1191 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1192 			char *s;
1193 			branchname = pe->path;
1194 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1195 				branchname += 11;
1196 			if (asprintf(&s, "%s\"%s\" ",
1197 			    branches ? branches : "", branchname) == -1) {
1198 				err = got_error_from_errno("asprintf");
1199 				goto done;
1200 			}
1201 			free(branches);
1202 			branches = s;
1203 		}
1204 	} else if (!fetch_all_branches && default_branch) {
1205 		branchname = default_branch;
1206 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1207 			branchname += 11;
1208 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1209 			err = got_error_from_errno("asprintf");
1210 			goto done;
1211 		}
1212 	}
1213 	if (!TAILQ_EMPTY(wanted_refs)) {
1214 		struct got_pathlist_entry *pe;
1215 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1216 			char *s;
1217 			const char *refname = pe->path;
1218 			if (strncmp(refname, "refs/", 5) == 0)
1219 				branchname += 5;
1220 			if (asprintf(&s, "%s\"%s\" ",
1221 			    refs ? refs : "", refname) == -1) {
1222 				err = got_error_from_errno("asprintf");
1223 				goto done;
1224 			}
1225 			free(refs);
1226 			refs = s;
1227 		}
1228 	}
1229 
1230 	/* Create got.conf(5). */
1231 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1232 	if (gotconfig_path == NULL) {
1233 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1234 		goto done;
1235 	}
1236 	gotconfig_file = fopen(gotconfig_path, "a");
1237 	if (gotconfig_file == NULL) {
1238 		err = got_error_from_errno2("fopen", gotconfig_path);
1239 		goto done;
1240 	}
1241 	if (asprintf(&gotconfig,
1242 	    "remote \"%s\" {\n"
1243 	    "\tserver %s\n"
1244 	    "\tprotocol %s\n"
1245 	    "%s%s%s"
1246 	    "\trepository \"%s\"\n"
1247 	    "%s%s%s"
1248 	    "%s%s%s"
1249 	    "%s"
1250 	    "%s"
1251 	    "}\n",
1252 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1253 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1254 	    remote_repo_path, branches ? "\tbranch { " : "",
1255 	    branches ? branches : "", branches ? "}\n" : "", 
1256 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "", 
1257 	    mirror_references ? "\tmirror-references yes\n" : "",
1258 	    fetch_all_branches ? "\tfetch-all-branches yes\n" : "") == -1) {
1259 		err = got_error_from_errno("asprintf");
1260 		goto done;
1261 	}
1262 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1263 	if (n != strlen(gotconfig)) {
1264 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1265 		goto done;
1266 	}
1267 
1268 done:
1269 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1270 		err = got_error_from_errno2("fclose", gotconfig_path);
1271 	free(gotconfig_path);
1272 	free(branches);
1273 	return err;
1274 }
1275 
1276 static const struct got_error *
1277 create_gitconfig(const char *git_url, const char *default_branch,
1278     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1279     struct got_pathlist_head *wanted_refs, int mirror_references,
1280     struct got_repository *repo)
1281 {
1282 	const struct got_error *err = NULL;
1283 	char *gitconfig_path = NULL;
1284 	char *gitconfig = NULL;
1285 	FILE *gitconfig_file = NULL;
1286 	char *branches = NULL, *refs = NULL;
1287 	const char *branchname;
1288 	ssize_t n;
1289 
1290 	/* Create a config file Git can understand. */
1291 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1292 	if (gitconfig_path == NULL) {
1293 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1294 		goto done;
1295 	}
1296 	gitconfig_file = fopen(gitconfig_path, "a");
1297 	if (gitconfig_file == NULL) {
1298 		err = got_error_from_errno2("fopen", gitconfig_path);
1299 		goto done;
1300 	}
1301 	if (fetch_all_branches) {
1302 		if (mirror_references) {
1303 			if (asprintf(&branches,
1304 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1305 				err = got_error_from_errno("asprintf");
1306 				goto done;
1307 			}
1308 		} else if (asprintf(&branches,
1309 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1310 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1311 			err = got_error_from_errno("asprintf");
1312 			goto done;
1313 		}
1314 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1315 		struct got_pathlist_entry *pe;
1316 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1317 			char *s;
1318 			branchname = pe->path;
1319 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1320 				branchname += 11;
1321 			if (mirror_references) {
1322 				if (asprintf(&s,
1323 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1324 				    branches ? branches : "",
1325 				    branchname, branchname) == -1) {
1326 					err = got_error_from_errno("asprintf");
1327 					goto done;
1328 				}
1329 			} else if (asprintf(&s,
1330 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1331 			    branches ? branches : "",
1332 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1333 			    branchname) == -1) {
1334 				err = got_error_from_errno("asprintf");
1335 				goto done;
1336 			}
1337 			free(branches);
1338 			branches = s;
1339 		}
1340 	} else {
1341 		/*
1342 		 * If the server specified a default branch, use just that one.
1343 		 * Otherwise fall back to fetching all branches on next fetch.
1344 		 */
1345 		if (default_branch) {
1346 			branchname = default_branch;
1347 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1348 				branchname += 11;
1349 		} else
1350 			branchname = "*"; /* fall back to all branches */
1351 		if (mirror_references) {
1352 			if (asprintf(&branches,
1353 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1354 			    branchname, branchname) == -1) {
1355 				err = got_error_from_errno("asprintf");
1356 				goto done;
1357 			}
1358 		} else if (asprintf(&branches,
1359 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1360 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1361 		    branchname) == -1) {
1362 			err = got_error_from_errno("asprintf");
1363 			goto done;
1364 		}
1365 	}
1366 	if (!TAILQ_EMPTY(wanted_refs)) {
1367 		struct got_pathlist_entry *pe;
1368 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1369 			char *s;
1370 			const char *refname = pe->path;
1371 			if (strncmp(refname, "refs/", 5) == 0)
1372 				refname += 5;
1373 			if (mirror_references) {
1374 				if (asprintf(&s,
1375 				    "%s\tfetch = refs/%s:refs/%s\n",
1376 				    refs ? refs : "", refname, refname) == -1) {
1377 					err = got_error_from_errno("asprintf");
1378 					goto done;
1379 				}
1380 			} else if (asprintf(&s,
1381 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1382 			    refs ? refs : "",
1383 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1384 			    refname) == -1) {
1385 				err = got_error_from_errno("asprintf");
1386 				goto done;
1387 			}
1388 			free(refs);
1389 			refs = s;
1390 		}
1391 	}
1392 
1393 	if (asprintf(&gitconfig,
1394 	    "[remote \"%s\"]\n"
1395 	    "\turl = %s\n"
1396 	    "%s"
1397 	    "%s"
1398 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1399 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1400 	    refs ? refs : "") == -1) {
1401 		err = got_error_from_errno("asprintf");
1402 		goto done;
1403 	}
1404 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1405 	if (n != strlen(gitconfig)) {
1406 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1407 		goto done;
1408 	}
1409 done:
1410 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1411 		err = got_error_from_errno2("fclose", gitconfig_path);
1412 	free(gitconfig_path);
1413 	free(branches);
1414 	return err;
1415 }
1416 
1417 static const struct got_error *
1418 create_config_files(const char *proto, const char *host, const char *port,
1419     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1420     int mirror_references, struct got_pathlist_head *symrefs,
1421     struct got_pathlist_head *wanted_branches,
1422     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1423 {
1424 	const struct got_error *err = NULL;
1425 	const char *default_branch = NULL;
1426 	struct got_pathlist_entry *pe;
1427 
1428 	/*
1429 	 * If we asked for a set of wanted branches then use the first
1430 	 * one of those.
1431 	 */
1432 	if (!TAILQ_EMPTY(wanted_branches)) {
1433 		pe = TAILQ_FIRST(wanted_branches);
1434 		default_branch = pe->path;
1435 	} else {
1436 		/* First HEAD ref listed by server is the default branch. */
1437 		TAILQ_FOREACH(pe, symrefs, entry) {
1438 			const char *refname = pe->path;
1439 			const char *target = pe->data;
1440 
1441 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1442 				continue;
1443 
1444 			default_branch = target;
1445 			break;
1446 		}
1447 	}
1448 
1449 	/* Create got.conf(5). */
1450 	err = create_gotconfig(proto, host, port, remote_repo_path,
1451 	    default_branch, fetch_all_branches, wanted_branches,
1452 	    wanted_refs, mirror_references, repo);
1453 	if (err)
1454 		return err;
1455 
1456 	/* Create a config file Git can understand. */
1457 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1458 	    wanted_branches, wanted_refs, mirror_references, repo);
1459 }
1460 
1461 static const struct got_error *
1462 cmd_clone(int argc, char *argv[])
1463 {
1464 	const struct got_error *error = NULL;
1465 	const char *uri, *dirname;
1466 	char *proto, *host, *port, *repo_name, *server_path;
1467 	char *default_destdir = NULL, *id_str = NULL;
1468 	const char *repo_path;
1469 	struct got_repository *repo = NULL;
1470 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1471 	struct got_pathlist_entry *pe;
1472 	struct got_object_id *pack_hash = NULL;
1473 	int ch, fetchfd = -1, fetchstatus;
1474 	pid_t fetchpid = -1;
1475 	struct got_fetch_progress_arg fpa;
1476 	char *git_url = NULL;
1477 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1478 	int list_refs_only = 0;
1479 
1480 	TAILQ_INIT(&refs);
1481 	TAILQ_INIT(&symrefs);
1482 	TAILQ_INIT(&wanted_branches);
1483 	TAILQ_INIT(&wanted_refs);
1484 
1485 	while ((ch = getopt(argc, argv, "ab:lmvqR:")) != -1) {
1486 		switch (ch) {
1487 		case 'a':
1488 			fetch_all_branches = 1;
1489 			break;
1490 		case 'b':
1491 			error = got_pathlist_append(&wanted_branches,
1492 			    optarg, NULL);
1493 			if (error)
1494 				return error;
1495 			break;
1496 		case 'l':
1497 			list_refs_only = 1;
1498 			break;
1499 		case 'm':
1500 			mirror_references = 1;
1501 			break;
1502 		case 'v':
1503 			if (verbosity < 0)
1504 				verbosity = 0;
1505 			else if (verbosity < 3)
1506 				verbosity++;
1507 			break;
1508 		case 'q':
1509 			verbosity = -1;
1510 			break;
1511 		case 'R':
1512 			error = got_pathlist_append(&wanted_refs,
1513 			    optarg, NULL);
1514 			if (error)
1515 				return error;
1516 			break;
1517 		default:
1518 			usage_clone();
1519 			break;
1520 		}
1521 	}
1522 	argc -= optind;
1523 	argv += optind;
1524 
1525 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1526 		option_conflict('a', 'b');
1527 	if (list_refs_only) {
1528 		if (!TAILQ_EMPTY(&wanted_branches))
1529 			option_conflict('l', 'b');
1530 		if (fetch_all_branches)
1531 			option_conflict('l', 'a');
1532 		if (mirror_references)
1533 			option_conflict('l', 'm');
1534 		if (!TAILQ_EMPTY(&wanted_refs))
1535 			option_conflict('l', 'R');
1536 	}
1537 
1538 	uri = argv[0];
1539 
1540 	if (argc == 1)
1541 		dirname = NULL;
1542 	else if (argc == 2)
1543 		dirname = argv[1];
1544 	else
1545 		usage_clone();
1546 
1547 	error = got_fetch_parse_uri(&proto, &host, &port, &server_path,
1548 	    &repo_name, uri);
1549 	if (error)
1550 		goto done;
1551 
1552 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1553 	    host, port ? ":" : "", port ? port : "",
1554 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1555 		error = got_error_from_errno("asprintf");
1556 		goto done;
1557 	}
1558 
1559 	if (strcmp(proto, "git") == 0) {
1560 #ifndef PROFILE
1561 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1562 		    "sendfd dns inet unveil", NULL) == -1)
1563 			err(1, "pledge");
1564 #endif
1565 	} else if (strcmp(proto, "git+ssh") == 0 ||
1566 	    strcmp(proto, "ssh") == 0) {
1567 #ifndef PROFILE
1568 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1569 		    "sendfd unveil", NULL) == -1)
1570 			err(1, "pledge");
1571 #endif
1572 	} else if (strcmp(proto, "http") == 0 ||
1573 	    strcmp(proto, "git+http") == 0) {
1574 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1575 		goto done;
1576 	} else {
1577 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1578 		goto done;
1579 	}
1580 	if (dirname == NULL) {
1581 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1582 			error = got_error_from_errno("asprintf");
1583 			goto done;
1584 		}
1585 		repo_path = default_destdir;
1586 	} else
1587 		repo_path = dirname;
1588 
1589 	if (!list_refs_only) {
1590 		error = got_path_mkdir(repo_path);
1591 		if (error &&
1592 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1593 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1594 			goto done;
1595 		if (!got_path_dir_is_empty(repo_path)) {
1596 			error = got_error_path(repo_path,
1597 			    GOT_ERR_DIR_NOT_EMPTY);
1598 			goto done;
1599 		}
1600 	}
1601 
1602 	if (strcmp(proto, "git+ssh") == 0 || strcmp(proto, "ssh") == 0) {
1603 		if (unveil(GOT_FETCH_PATH_SSH, "x") != 0) {
1604 			error = got_error_from_errno2("unveil",
1605 			    GOT_FETCH_PATH_SSH);
1606 			goto done;
1607 		}
1608 	}
1609 	error = apply_unveil(repo_path, 0, NULL);
1610 	if (error)
1611 		goto done;
1612 
1613 	if (verbosity >= 0)
1614 		printf("Connecting to %s%s%s\n", host,
1615 		    port ? ":" : "", port ? port : "");
1616 
1617 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1618 	    server_path, verbosity);
1619 	if (error)
1620 		goto done;
1621 
1622 	if (!list_refs_only) {
1623 		error = got_repo_init(repo_path);
1624 		if (error)
1625 			goto done;
1626 		error = got_repo_open(&repo, repo_path, NULL);
1627 		if (error)
1628 			goto done;
1629 	}
1630 
1631 	fpa.last_scaled_size[0] = '\0';
1632 	fpa.last_p_indexed = -1;
1633 	fpa.last_p_resolved = -1;
1634 	fpa.verbosity = verbosity;
1635 	fpa.create_configs = 1;
1636 	fpa.configs_created = 0;
1637 	fpa.repo = repo;
1638 	fpa.config_info.symrefs = &symrefs;
1639 	fpa.config_info.wanted_branches = &wanted_branches;
1640 	fpa.config_info.wanted_refs = &wanted_refs;
1641 	fpa.config_info.proto = proto;
1642 	fpa.config_info.host = host;
1643 	fpa.config_info.port = port;
1644 	fpa.config_info.remote_repo_path = server_path;
1645 	fpa.config_info.git_url = git_url;
1646 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1647 	fpa.config_info.mirror_references = mirror_references;
1648 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1649 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1650 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1651 	    list_refs_only, verbosity, fetchfd, repo,
1652 	    fetch_progress, &fpa);
1653 	if (error)
1654 		goto done;
1655 
1656 	if (list_refs_only) {
1657 		error = list_remote_refs(&symrefs, &refs);
1658 		goto done;
1659 	}
1660 
1661 	error = got_object_id_str(&id_str, pack_hash);
1662 	if (error)
1663 		goto done;
1664 	if (verbosity >= 0)
1665 		printf("\nFetched %s.pack\n", id_str);
1666 	free(id_str);
1667 
1668 	/* Set up references provided with the pack file. */
1669 	TAILQ_FOREACH(pe, &refs, entry) {
1670 		const char *refname = pe->path;
1671 		struct got_object_id *id = pe->data;
1672 		char *remote_refname;
1673 
1674 		if (is_wanted_ref(&wanted_refs, refname) &&
1675 		    !mirror_references) {
1676 			error = create_wanted_ref(refname, id,
1677 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1678 			    verbosity - 1, repo);
1679 			if (error)
1680 				goto done;
1681 			continue;
1682 		}
1683 
1684 		error = create_ref(refname, id, verbosity - 1, repo);
1685 		if (error)
1686 			goto done;
1687 
1688 		if (mirror_references)
1689 			continue;
1690 
1691 		if (strncmp("refs/heads/", refname, 11) != 0)
1692 			continue;
1693 
1694 		if (asprintf(&remote_refname,
1695 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1696 		    refname + 11) == -1) {
1697 			error = got_error_from_errno("asprintf");
1698 			goto done;
1699 		}
1700 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1701 		free(remote_refname);
1702 		if (error)
1703 			goto done;
1704 	}
1705 
1706 	/* Set the HEAD reference if the server provided one. */
1707 	TAILQ_FOREACH(pe, &symrefs, entry) {
1708 		struct got_reference *target_ref;
1709 		const char *refname = pe->path;
1710 		const char *target = pe->data;
1711 		char *remote_refname = NULL, *remote_target = NULL;
1712 
1713 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1714 			continue;
1715 
1716 		error = got_ref_open(&target_ref, repo, target, 0);
1717 		if (error) {
1718 			if (error->code == GOT_ERR_NOT_REF) {
1719 				error = NULL;
1720 				continue;
1721 			}
1722 			goto done;
1723 		}
1724 
1725 		error = create_symref(refname, target_ref, verbosity, repo);
1726 		got_ref_close(target_ref);
1727 		if (error)
1728 			goto done;
1729 
1730 		if (mirror_references)
1731 			continue;
1732 
1733 		if (strncmp("refs/heads/", target, 11) != 0)
1734 			continue;
1735 
1736 		if (asprintf(&remote_refname,
1737 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1738 		    refname) == -1) {
1739 			error = got_error_from_errno("asprintf");
1740 			goto done;
1741 		}
1742 		if (asprintf(&remote_target,
1743 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1744 		    target + 11) == -1) {
1745 			error = got_error_from_errno("asprintf");
1746 			free(remote_refname);
1747 			goto done;
1748 		}
1749 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1750 		if (error) {
1751 			free(remote_refname);
1752 			free(remote_target);
1753 			if (error->code == GOT_ERR_NOT_REF) {
1754 				error = NULL;
1755 				continue;
1756 			}
1757 			goto done;
1758 		}
1759 		error = create_symref(remote_refname, target_ref,
1760 		    verbosity - 1, repo);
1761 		free(remote_refname);
1762 		free(remote_target);
1763 		got_ref_close(target_ref);
1764 		if (error)
1765 			goto done;
1766 	}
1767 	if (pe == NULL) {
1768 		/*
1769 		 * We failed to set the HEAD reference. If we asked for
1770 		 * a set of wanted branches use the first of one of those
1771 		 * which could be fetched instead.
1772 		 */
1773 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1774 			const char *target = pe->path;
1775 			struct got_reference *target_ref;
1776 
1777 			error = got_ref_open(&target_ref, repo, target, 0);
1778 			if (error) {
1779 				if (error->code == GOT_ERR_NOT_REF) {
1780 					error = NULL;
1781 					continue;
1782 				}
1783 				goto done;
1784 			}
1785 
1786 			error = create_symref(GOT_REF_HEAD, target_ref,
1787 			    verbosity, repo);
1788 			got_ref_close(target_ref);
1789 			if (error)
1790 				goto done;
1791 			break;
1792 		}
1793 	}
1794 
1795 	if (verbosity >= 0)
1796 		printf("Created %s repository '%s'\n",
1797 		    mirror_references ? "mirrored" : "cloned", repo_path);
1798 done:
1799 	if (fetchpid > 0) {
1800 		if (kill(fetchpid, SIGTERM) == -1)
1801 			error = got_error_from_errno("kill");
1802 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1803 			error = got_error_from_errno("waitpid");
1804 	}
1805 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1806 		error = got_error_from_errno("close");
1807 	if (repo) {
1808 		const struct got_error *close_err = got_repo_close(repo);
1809 		if (error == NULL)
1810 			error = close_err;
1811 	}
1812 	TAILQ_FOREACH(pe, &refs, entry) {
1813 		free((void *)pe->path);
1814 		free(pe->data);
1815 	}
1816 	got_pathlist_free(&refs);
1817 	TAILQ_FOREACH(pe, &symrefs, entry) {
1818 		free((void *)pe->path);
1819 		free(pe->data);
1820 	}
1821 	got_pathlist_free(&symrefs);
1822 	got_pathlist_free(&wanted_branches);
1823 	got_pathlist_free(&wanted_refs);
1824 	free(pack_hash);
1825 	free(proto);
1826 	free(host);
1827 	free(port);
1828 	free(server_path);
1829 	free(repo_name);
1830 	free(default_destdir);
1831 	free(git_url);
1832 	return error;
1833 }
1834 
1835 static const struct got_error *
1836 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1837     int replace_tags, int verbosity, struct got_repository *repo)
1838 {
1839 	const struct got_error *err = NULL;
1840 	char *new_id_str = NULL;
1841 	struct got_object_id *old_id = NULL;
1842 
1843 	err = got_object_id_str(&new_id_str, new_id);
1844 	if (err)
1845 		goto done;
1846 
1847 	if (!replace_tags &&
1848 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1849 		err = got_ref_resolve(&old_id, repo, ref);
1850 		if (err)
1851 			goto done;
1852 		if (got_object_id_cmp(old_id, new_id) == 0)
1853 			goto done;
1854 		if (verbosity >= 0) {
1855 			printf("Rejecting update of existing tag %s: %s\n",
1856 			    got_ref_get_name(ref), new_id_str);
1857 		}
1858 		goto done;
1859 	}
1860 
1861 	if (got_ref_is_symbolic(ref)) {
1862 		if (verbosity >= 0) {
1863 			printf("Replacing reference %s: %s\n",
1864 			    got_ref_get_name(ref),
1865 			    got_ref_get_symref_target(ref));
1866 		}
1867 		err = got_ref_change_symref_to_ref(ref, new_id);
1868 		if (err)
1869 			goto done;
1870 		err = got_ref_write(ref, repo);
1871 		if (err)
1872 			goto done;
1873 	} else {
1874 		err = got_ref_resolve(&old_id, repo, ref);
1875 		if (err)
1876 			goto done;
1877 		if (got_object_id_cmp(old_id, new_id) == 0)
1878 			goto done;
1879 
1880 		err = got_ref_change_ref(ref, new_id);
1881 		if (err)
1882 			goto done;
1883 		err = got_ref_write(ref, repo);
1884 		if (err)
1885 			goto done;
1886 	}
1887 
1888 	if (verbosity >= 0)
1889 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1890 		    new_id_str);
1891 done:
1892 	free(old_id);
1893 	free(new_id_str);
1894 	return err;
1895 }
1896 
1897 static const struct got_error *
1898 update_symref(const char *refname, struct got_reference *target_ref,
1899     int verbosity, struct got_repository *repo)
1900 {
1901 	const struct got_error *err = NULL, *unlock_err;
1902 	struct got_reference *symref;
1903 	int symref_is_locked = 0;
1904 
1905 	err = got_ref_open(&symref, repo, refname, 1);
1906 	if (err) {
1907 		if (err->code != GOT_ERR_NOT_REF)
1908 			return err;
1909 		err = got_ref_alloc_symref(&symref, refname, target_ref);
1910 		if (err)
1911 			goto done;
1912 
1913 		err = got_ref_write(symref, repo);
1914 		if (err)
1915 			goto done;
1916 
1917 		if (verbosity >= 0)
1918 			printf("Created reference %s: %s\n",
1919 			    got_ref_get_name(symref),
1920 			    got_ref_get_symref_target(symref));
1921 	} else {
1922 		symref_is_locked = 1;
1923 
1924 		if (strcmp(got_ref_get_symref_target(symref),
1925 		    got_ref_get_name(target_ref)) == 0)
1926 			goto done;
1927 
1928 		err = got_ref_change_symref(symref,
1929 		    got_ref_get_name(target_ref));
1930 		if (err)
1931 			goto done;
1932 
1933 		err = got_ref_write(symref, repo);
1934 		if (err)
1935 			goto done;
1936 
1937 		if (verbosity >= 0)
1938 			printf("Updated %s: %s\n", got_ref_get_name(symref),
1939 			    got_ref_get_symref_target(symref));
1940 
1941 	}
1942 done:
1943 	if (symref_is_locked) {
1944 		unlock_err = got_ref_unlock(symref);
1945 		if (unlock_err && err == NULL)
1946 			err = unlock_err;
1947 	}
1948 	got_ref_close(symref);
1949 	return err;
1950 }
1951 
1952 __dead static void
1953 usage_fetch(void)
1954 {
1955 	fprintf(stderr, "usage: %s fetch [-a] [-b branch] [-d] [-l] "
1956 	    "[-r repository-path] [-t] [-q] [-v] [-R reference] [-X] "
1957 	    "[remote-repository-name]\n",
1958 	    getprogname());
1959 	exit(1);
1960 }
1961 
1962 static const struct got_error *
1963 delete_missing_ref(struct got_reference *ref,
1964     int verbosity, struct got_repository *repo)
1965 {
1966 	const struct got_error *err = NULL;
1967 	struct got_object_id *id = NULL;
1968 	char *id_str = NULL;
1969 
1970 	if (got_ref_is_symbolic(ref)) {
1971 		err = got_ref_delete(ref, repo);
1972 		if (err)
1973 			return err;
1974 		if (verbosity >= 0) {
1975 			printf("Deleted %s: %s\n",
1976 			    got_ref_get_name(ref),
1977 			    got_ref_get_symref_target(ref));
1978 		}
1979 	} else {
1980 		err = got_ref_resolve(&id, repo, ref);
1981 		if (err)
1982 			return err;
1983 		err = got_object_id_str(&id_str, id);
1984 		if (err)
1985 			goto done;
1986 
1987 		err = got_ref_delete(ref, repo);
1988 		if (err)
1989 			goto done;
1990 		if (verbosity >= 0) {
1991 			printf("Deleted %s: %s\n",
1992 			    got_ref_get_name(ref), id_str);
1993 		}
1994 	}
1995 done:
1996 	free(id);
1997 	free(id_str);
1998 	return NULL;
1999 }
2000 
2001 static const struct got_error *
2002 delete_missing_refs(struct got_pathlist_head *their_refs,
2003     struct got_pathlist_head *their_symrefs,
2004     const struct got_remote_repo *remote,
2005     int verbosity, struct got_repository *repo)
2006 {
2007 	const struct got_error *err = NULL, *unlock_err;
2008 	struct got_reflist_head my_refs;
2009 	struct got_reflist_entry *re;
2010 	struct got_pathlist_entry *pe;
2011 	char *remote_namespace = NULL;
2012 	char *local_refname = NULL;
2013 
2014 	TAILQ_INIT(&my_refs);
2015 
2016 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2017 	    == -1)
2018 		return got_error_from_errno("asprintf");
2019 
2020 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2021 	if (err)
2022 		goto done;
2023 
2024 	TAILQ_FOREACH(re, &my_refs, entry) {
2025 		const char *refname = got_ref_get_name(re->ref);
2026 
2027 		if (!remote->mirror_references) {
2028 			if (strncmp(refname, remote_namespace,
2029 			    strlen(remote_namespace)) == 0) {
2030 				if (strcmp(refname + strlen(remote_namespace),
2031 				    GOT_REF_HEAD) == 0)
2032 					continue;
2033 				if (asprintf(&local_refname, "refs/heads/%s",
2034 				    refname + strlen(remote_namespace)) == -1) {
2035 					err = got_error_from_errno("asprintf");
2036 					goto done;
2037 				}
2038 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2039 				continue;
2040 		}
2041 
2042 		TAILQ_FOREACH(pe, their_refs, entry) {
2043 			if (strcmp(local_refname, pe->path) == 0)
2044 				break;
2045 		}
2046 		if (pe != NULL)
2047 			continue;
2048 
2049 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2050 			if (strcmp(local_refname, pe->path) == 0)
2051 				break;
2052 		}
2053 		if (pe != NULL)
2054 			continue;
2055 
2056 		err = delete_missing_ref(re->ref, verbosity, repo);
2057 		if (err)
2058 			break;
2059 
2060 		if (local_refname) {
2061 			struct got_reference *ref;
2062 			err = got_ref_open(&ref, repo, local_refname, 1);
2063 			if (err) {
2064 				if (err->code != GOT_ERR_NOT_REF)
2065 					break;
2066 				free(local_refname);
2067 				local_refname = NULL;
2068 				continue;
2069 			}
2070 			err = delete_missing_ref(ref, verbosity, repo);
2071 			if (err)
2072 				break;
2073 			unlock_err = got_ref_unlock(ref);
2074 			got_ref_close(ref);
2075 			if (unlock_err && err == NULL) {
2076 				err = unlock_err;
2077 				break;
2078 			}
2079 
2080 			free(local_refname);
2081 			local_refname = NULL;
2082 		}
2083 	}
2084 done:
2085 	free(remote_namespace);
2086 	free(local_refname);
2087 	return err;
2088 }
2089 
2090 static const struct got_error *
2091 update_wanted_ref(const char *refname, struct got_object_id *id,
2092     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2093 {
2094 	const struct got_error *err, *unlock_err;
2095 	char *remote_refname;
2096 	struct got_reference *ref;
2097 
2098 	if (strncmp("refs/", refname, 5) == 0)
2099 		refname += 5;
2100 
2101 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2102 	    remote_repo_name, refname) == -1)
2103 		return got_error_from_errno("asprintf");
2104 
2105 	err = got_ref_open(&ref, repo, remote_refname, 1);
2106 	if (err) {
2107 		if (err->code != GOT_ERR_NOT_REF)
2108 			goto done;
2109 		err = create_ref(remote_refname, id, verbosity, repo);
2110 	} else {
2111 		err = update_ref(ref, id, 0, verbosity, repo);
2112 		unlock_err = got_ref_unlock(ref);
2113 		if (unlock_err && err == NULL)
2114 			err = unlock_err;
2115 		got_ref_close(ref);
2116 	}
2117 done:
2118 	free(remote_refname);
2119 	return err;
2120 }
2121 
2122 static const struct got_error *
2123 delete_ref(struct got_repository *repo, struct got_reference *ref)
2124 {
2125 	const struct got_error *err = NULL;
2126 	struct got_object_id *id = NULL;
2127 	char *id_str = NULL;
2128 	const char *target;
2129 
2130 	if (got_ref_is_symbolic(ref)) {
2131 		target = got_ref_get_symref_target(ref);
2132 	} else {
2133 		err = got_ref_resolve(&id, repo, ref);
2134 		if (err)
2135 			goto done;
2136 		err = got_object_id_str(&id_str, id);
2137 		if (err)
2138 			goto done;
2139 		target = id_str;
2140 	}
2141 
2142 	err = got_ref_delete(ref, repo);
2143 	if (err)
2144 		goto done;
2145 
2146 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2147 done:
2148 	free(id);
2149 	free(id_str);
2150 	return err;
2151 }
2152 
2153 static const struct got_error *
2154 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2155 {
2156 	const struct got_error *err = NULL;
2157 	struct got_reflist_head refs;
2158 	struct got_reflist_entry *re;
2159 	char *prefix;
2160 
2161 	TAILQ_INIT(&refs);
2162 
2163 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2164 		err = got_error_from_errno("asprintf");
2165 		goto done;
2166 	}
2167 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2168 	if (err)
2169 		goto done;
2170 
2171 	TAILQ_FOREACH(re, &refs, entry)
2172 		delete_ref(repo, re->ref);
2173 done:
2174 	got_ref_list_free(&refs);
2175 	return err;
2176 }
2177 
2178 static const struct got_error *
2179 cmd_fetch(int argc, char *argv[])
2180 {
2181 	const struct got_error *error = NULL, *unlock_err;
2182 	char *cwd = NULL, *repo_path = NULL;
2183 	const char *remote_name;
2184 	char *proto = NULL, *host = NULL, *port = NULL;
2185 	char *repo_name = NULL, *server_path = NULL;
2186 	const struct got_remote_repo *remotes, *remote = NULL;
2187 	int nremotes;
2188 	char *id_str = NULL;
2189 	struct got_repository *repo = NULL;
2190 	struct got_worktree *worktree = NULL;
2191 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2192 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2193 	struct got_pathlist_entry *pe;
2194 	struct got_object_id *pack_hash = NULL;
2195 	int i, ch, fetchfd = -1, fetchstatus;
2196 	pid_t fetchpid = -1;
2197 	struct got_fetch_progress_arg fpa;
2198 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2199 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2200 
2201 	TAILQ_INIT(&refs);
2202 	TAILQ_INIT(&symrefs);
2203 	TAILQ_INIT(&wanted_branches);
2204 	TAILQ_INIT(&wanted_refs);
2205 
2206 	while ((ch = getopt(argc, argv, "ab:dlr:tvqR:X")) != -1) {
2207 		switch (ch) {
2208 		case 'a':
2209 			fetch_all_branches = 1;
2210 			break;
2211 		case 'b':
2212 			error = got_pathlist_append(&wanted_branches,
2213 			    optarg, NULL);
2214 			if (error)
2215 				return error;
2216 			break;
2217 		case 'd':
2218 			delete_refs = 1;
2219 			break;
2220 		case 'l':
2221 			list_refs_only = 1;
2222 			break;
2223 		case 'r':
2224 			repo_path = realpath(optarg, NULL);
2225 			if (repo_path == NULL)
2226 				return got_error_from_errno2("realpath",
2227 				    optarg);
2228 			got_path_strip_trailing_slashes(repo_path);
2229 			break;
2230 		case 't':
2231 			replace_tags = 1;
2232 			break;
2233 		case 'v':
2234 			if (verbosity < 0)
2235 				verbosity = 0;
2236 			else if (verbosity < 3)
2237 				verbosity++;
2238 			break;
2239 		case 'q':
2240 			verbosity = -1;
2241 			break;
2242 		case 'R':
2243 			error = got_pathlist_append(&wanted_refs,
2244 			    optarg, NULL);
2245 			if (error)
2246 				return error;
2247 			break;
2248 		case 'X':
2249 			delete_remote = 1;
2250 			break;
2251 		default:
2252 			usage_fetch();
2253 			break;
2254 		}
2255 	}
2256 	argc -= optind;
2257 	argv += optind;
2258 
2259 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2260 		option_conflict('a', 'b');
2261 	if (list_refs_only) {
2262 		if (!TAILQ_EMPTY(&wanted_branches))
2263 			option_conflict('l', 'b');
2264 		if (fetch_all_branches)
2265 			option_conflict('l', 'a');
2266 		if (delete_refs)
2267 			option_conflict('l', 'd');
2268 		if (delete_remote)
2269 			option_conflict('l', 'X');
2270 	}
2271 	if (delete_remote) {
2272 		if (fetch_all_branches)
2273 			option_conflict('X', 'a');
2274 		if (!TAILQ_EMPTY(&wanted_branches))
2275 			option_conflict('X', 'b');
2276 		if (delete_refs)
2277 			option_conflict('X', 'd');
2278 		if (replace_tags)
2279 			option_conflict('X', 't');
2280 		if (!TAILQ_EMPTY(&wanted_refs))
2281 			option_conflict('X', 'R');
2282 	}
2283 
2284 	if (argc == 0) {
2285 		if (delete_remote)
2286 			errx(1, "-X option requires a remote name");
2287 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2288 	} else if (argc == 1)
2289 		remote_name = argv[0];
2290 	else
2291 		usage_fetch();
2292 
2293 	cwd = getcwd(NULL, 0);
2294 	if (cwd == NULL) {
2295 		error = got_error_from_errno("getcwd");
2296 		goto done;
2297 	}
2298 
2299 	if (repo_path == NULL) {
2300 		error = got_worktree_open(&worktree, cwd);
2301 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2302 			goto done;
2303 		else
2304 			error = NULL;
2305 		if (worktree) {
2306 			repo_path =
2307 			    strdup(got_worktree_get_repo_path(worktree));
2308 			if (repo_path == NULL)
2309 				error = got_error_from_errno("strdup");
2310 			if (error)
2311 				goto done;
2312 		} else {
2313 			repo_path = strdup(cwd);
2314 			if (repo_path == NULL) {
2315 				error = got_error_from_errno("strdup");
2316 				goto done;
2317 			}
2318 		}
2319 	}
2320 
2321 	error = got_repo_open(&repo, repo_path, NULL);
2322 	if (error)
2323 		goto done;
2324 
2325 	if (delete_remote) {
2326 		error = delete_refs_for_remote(repo, remote_name);
2327 		goto done; /* nothing else to do */
2328 	}
2329 
2330 	if (worktree) {
2331 		worktree_conf = got_worktree_get_gotconfig(worktree);
2332 		if (worktree_conf) {
2333 			got_gotconfig_get_remotes(&nremotes, &remotes,
2334 			    worktree_conf);
2335 			for (i = 0; i < nremotes; i++) {
2336 				if (strcmp(remotes[i].name, remote_name) == 0) {
2337 					remote = &remotes[i];
2338 					break;
2339 				}
2340 			}
2341 		}
2342 	}
2343 	if (remote == NULL) {
2344 		repo_conf = got_repo_get_gotconfig(repo);
2345 		if (repo_conf) {
2346 			got_gotconfig_get_remotes(&nremotes, &remotes,
2347 			    repo_conf);
2348 			for (i = 0; i < nremotes; i++) {
2349 				if (strcmp(remotes[i].name, remote_name) == 0) {
2350 					remote = &remotes[i];
2351 					break;
2352 				}
2353 			}
2354 		}
2355 	}
2356 	if (remote == NULL) {
2357 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2358 		for (i = 0; i < nremotes; i++) {
2359 			if (strcmp(remotes[i].name, remote_name) == 0) {
2360 				remote = &remotes[i];
2361 				break;
2362 			}
2363 		}
2364 	}
2365 	if (remote == NULL) {
2366 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2367 		goto done;
2368 	}
2369 
2370 	if (TAILQ_EMPTY(&wanted_branches)) {
2371 		if (!fetch_all_branches)
2372 			fetch_all_branches = remote->fetch_all_branches;
2373 		for (i = 0; i < remote->nfetch_branches; i++) {
2374 			got_pathlist_append(&wanted_branches,
2375 			    remote->fetch_branches[i], NULL);
2376 		}
2377 	}
2378 	if (TAILQ_EMPTY(&wanted_refs)) {
2379 		for (i = 0; i < remote->nfetch_refs; i++) {
2380 			got_pathlist_append(&wanted_refs,
2381 			    remote->fetch_refs[i], NULL);
2382 		}
2383 	}
2384 
2385 	error = got_fetch_parse_uri(&proto, &host, &port, &server_path,
2386 	    &repo_name, remote->fetch_url);
2387 	if (error)
2388 		goto done;
2389 
2390 	if (strcmp(proto, "git") == 0) {
2391 #ifndef PROFILE
2392 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2393 		    "sendfd dns inet unveil", NULL) == -1)
2394 			err(1, "pledge");
2395 #endif
2396 	} else if (strcmp(proto, "git+ssh") == 0 ||
2397 	    strcmp(proto, "ssh") == 0) {
2398 #ifndef PROFILE
2399 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2400 		    "sendfd unveil", NULL) == -1)
2401 			err(1, "pledge");
2402 #endif
2403 	} else if (strcmp(proto, "http") == 0 ||
2404 	    strcmp(proto, "git+http") == 0) {
2405 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2406 		goto done;
2407 	} else {
2408 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2409 		goto done;
2410 	}
2411 
2412 	if (strcmp(proto, "git+ssh") == 0 || strcmp(proto, "ssh") == 0) {
2413 		if (unveil(GOT_FETCH_PATH_SSH, "x") != 0) {
2414 			error = got_error_from_errno2("unveil",
2415 			    GOT_FETCH_PATH_SSH);
2416 			goto done;
2417 		}
2418 	}
2419 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2420 	if (error)
2421 		goto done;
2422 
2423 	if (verbosity >= 0)
2424 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
2425 		    port ? ":" : "", port ? port : "");
2426 
2427 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2428 	    server_path, verbosity);
2429 	if (error)
2430 		goto done;
2431 
2432 	fpa.last_scaled_size[0] = '\0';
2433 	fpa.last_p_indexed = -1;
2434 	fpa.last_p_resolved = -1;
2435 	fpa.verbosity = verbosity;
2436 	fpa.repo = repo;
2437 	fpa.create_configs = 0;
2438 	fpa.configs_created = 0;
2439 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2440 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2441 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2442 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2443 	    fetch_progress, &fpa);
2444 	if (error)
2445 		goto done;
2446 
2447 	if (list_refs_only) {
2448 		error = list_remote_refs(&symrefs, &refs);
2449 		goto done;
2450 	}
2451 
2452 	if (pack_hash == NULL) {
2453 		if (verbosity >= 0)
2454 			printf("Already up-to-date\n");
2455 	} else if (verbosity >= 0) {
2456 		error = got_object_id_str(&id_str, pack_hash);
2457 		if (error)
2458 			goto done;
2459 		printf("\nFetched %s.pack\n", id_str);
2460 		free(id_str);
2461 		id_str = NULL;
2462 	}
2463 
2464 	/* Update references provided with the pack file. */
2465 	TAILQ_FOREACH(pe, &refs, entry) {
2466 		const char *refname = pe->path;
2467 		struct got_object_id *id = pe->data;
2468 		struct got_reference *ref;
2469 		char *remote_refname;
2470 
2471 		if (is_wanted_ref(&wanted_refs, refname) &&
2472 		    !remote->mirror_references) {
2473 			error = update_wanted_ref(refname, id,
2474 			    remote->name, verbosity, repo);
2475 			if (error)
2476 				goto done;
2477 			continue;
2478 		}
2479 
2480 		if (remote->mirror_references ||
2481 		    strncmp("refs/tags/", refname, 10) == 0) {
2482 			error = got_ref_open(&ref, repo, refname, 1);
2483 			if (error) {
2484 				if (error->code != GOT_ERR_NOT_REF)
2485 					goto done;
2486 				error = create_ref(refname, id, verbosity,
2487 				    repo);
2488 				if (error)
2489 					goto done;
2490 			} else {
2491 				error = update_ref(ref, id, replace_tags,
2492 				    verbosity, repo);
2493 				unlock_err = got_ref_unlock(ref);
2494 				if (unlock_err && error == NULL)
2495 					error = unlock_err;
2496 				got_ref_close(ref);
2497 				if (error)
2498 					goto done;
2499 			}
2500 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2501 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2502 			    remote_name, refname + 11) == -1) {
2503 				error = got_error_from_errno("asprintf");
2504 				goto done;
2505 			}
2506 
2507 			error = got_ref_open(&ref, repo, remote_refname, 1);
2508 			if (error) {
2509 				if (error->code != GOT_ERR_NOT_REF)
2510 					goto done;
2511 				error = create_ref(remote_refname, id, 
2512 				    verbosity, repo);
2513 				if (error)
2514 					goto done;
2515 			} else {
2516 				error = update_ref(ref, id, replace_tags,
2517 				    verbosity, repo);
2518 				unlock_err = got_ref_unlock(ref);
2519 				if (unlock_err && error == NULL)
2520 					error = unlock_err;
2521 				got_ref_close(ref);
2522 				if (error)
2523 					goto done;
2524 			}
2525 
2526 			/* Also create a local branch if none exists yet. */
2527 			error = got_ref_open(&ref, repo, refname, 1);
2528 			if (error) {
2529 				if (error->code != GOT_ERR_NOT_REF)
2530 					goto done;
2531 				error = create_ref(refname, id, verbosity,
2532 				    repo);
2533 				if (error)
2534 					goto done;
2535 			} else {
2536 				unlock_err = got_ref_unlock(ref);
2537 				if (unlock_err && error == NULL)
2538 					error = unlock_err;
2539 				got_ref_close(ref);
2540 			}
2541 		}
2542 	}
2543 	if (delete_refs) {
2544 		error = delete_missing_refs(&refs, &symrefs, remote,
2545 		    verbosity, repo);
2546 		if (error)
2547 			goto done;
2548 	}
2549 
2550 	if (!remote->mirror_references) {
2551 		/* Update remote HEAD reference if the server provided one. */
2552 		TAILQ_FOREACH(pe, &symrefs, entry) {
2553 			struct got_reference *target_ref;
2554 			const char *refname = pe->path;
2555 			const char *target = pe->data;
2556 			char *remote_refname = NULL, *remote_target = NULL;
2557 
2558 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2559 				continue;
2560 
2561 			if (strncmp("refs/heads/", target, 11) != 0)
2562 				continue;
2563 
2564 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2565 			    remote->name, refname) == -1) {
2566 				error = got_error_from_errno("asprintf");
2567 				goto done;
2568 			}
2569 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2570 			    remote->name, target + 11) == -1) {
2571 				error = got_error_from_errno("asprintf");
2572 				free(remote_refname);
2573 				goto done;
2574 			}
2575 
2576 			error = got_ref_open(&target_ref, repo, remote_target,
2577 			    0);
2578 			if (error) {
2579 				free(remote_refname);
2580 				free(remote_target);
2581 				if (error->code == GOT_ERR_NOT_REF) {
2582 					error = NULL;
2583 					continue;
2584 				}
2585 				goto done;
2586 			}
2587 			error = update_symref(remote_refname, target_ref,
2588 			    verbosity, repo);
2589 			free(remote_refname);
2590 			free(remote_target);
2591 			got_ref_close(target_ref);
2592 			if (error)
2593 				goto done;
2594 		}
2595 	}
2596 done:
2597 	if (fetchpid > 0) {
2598 		if (kill(fetchpid, SIGTERM) == -1)
2599 			error = got_error_from_errno("kill");
2600 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2601 			error = got_error_from_errno("waitpid");
2602 	}
2603 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2604 		error = got_error_from_errno("close");
2605 	if (repo) {
2606 		const struct got_error *close_err = got_repo_close(repo);
2607 		if (error == NULL)
2608 			error = close_err;
2609 	}
2610 	if (worktree)
2611 		got_worktree_close(worktree);
2612 	TAILQ_FOREACH(pe, &refs, entry) {
2613 		free((void *)pe->path);
2614 		free(pe->data);
2615 	}
2616 	got_pathlist_free(&refs);
2617 	TAILQ_FOREACH(pe, &symrefs, entry) {
2618 		free((void *)pe->path);
2619 		free(pe->data);
2620 	}
2621 	got_pathlist_free(&symrefs);
2622 	got_pathlist_free(&wanted_branches);
2623 	got_pathlist_free(&wanted_refs);
2624 	free(id_str);
2625 	free(cwd);
2626 	free(repo_path);
2627 	free(pack_hash);
2628 	free(proto);
2629 	free(host);
2630 	free(port);
2631 	free(server_path);
2632 	free(repo_name);
2633 	return error;
2634 }
2635 
2636 
2637 __dead static void
2638 usage_checkout(void)
2639 {
2640 	fprintf(stderr, "usage: %s checkout [-E] [-b branch] [-c commit] "
2641 	    "[-p prefix] repository-path [worktree-path]\n", getprogname());
2642 	exit(1);
2643 }
2644 
2645 static void
2646 show_worktree_base_ref_warning(void)
2647 {
2648 	fprintf(stderr, "%s: warning: could not create a reference "
2649 	    "to the work tree's base commit; the commit could be "
2650 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2651 	    "repository writable and running 'got update' will prevent this\n",
2652 	    getprogname());
2653 }
2654 
2655 struct got_checkout_progress_arg {
2656 	const char *worktree_path;
2657 	int had_base_commit_ref_error;
2658 };
2659 
2660 static const struct got_error *
2661 checkout_progress(void *arg, unsigned char status, const char *path)
2662 {
2663 	struct got_checkout_progress_arg *a = arg;
2664 
2665 	/* Base commit bump happens silently. */
2666 	if (status == GOT_STATUS_BUMP_BASE)
2667 		return NULL;
2668 
2669 	if (status == GOT_STATUS_BASE_REF_ERR) {
2670 		a->had_base_commit_ref_error = 1;
2671 		return NULL;
2672 	}
2673 
2674 	while (path[0] == '/')
2675 		path++;
2676 
2677 	printf("%c  %s/%s\n", status, a->worktree_path, path);
2678 	return NULL;
2679 }
2680 
2681 static const struct got_error *
2682 check_cancelled(void *arg)
2683 {
2684 	if (sigint_received || sigpipe_received)
2685 		return got_error(GOT_ERR_CANCELLED);
2686 	return NULL;
2687 }
2688 
2689 static const struct got_error *
2690 check_linear_ancestry(struct got_object_id *commit_id,
2691     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2692     struct got_repository *repo)
2693 {
2694 	const struct got_error *err = NULL;
2695 	struct got_object_id *yca_id;
2696 
2697 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2698 	    commit_id, base_commit_id, repo, check_cancelled, NULL);
2699 	if (err)
2700 		return err;
2701 
2702 	if (yca_id == NULL)
2703 		return got_error(GOT_ERR_ANCESTRY);
2704 
2705 	/*
2706 	 * Require a straight line of history between the target commit
2707 	 * and the work tree's base commit.
2708 	 *
2709 	 * Non-linear situations such as this require a rebase:
2710 	 *
2711 	 * (commit) D       F (base_commit)
2712 	 *           \     /
2713 	 *            C   E
2714 	 *             \ /
2715 	 *              B (yca)
2716 	 *              |
2717 	 *              A
2718 	 *
2719 	 * 'got update' only handles linear cases:
2720 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2721 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2722 	 */
2723 	if (allow_forwards_in_time_only) {
2724 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2725 		return got_error(GOT_ERR_ANCESTRY);
2726 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2727 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2728 		return got_error(GOT_ERR_ANCESTRY);
2729 
2730 	free(yca_id);
2731 	return NULL;
2732 }
2733 
2734 static const struct got_error *
2735 check_same_branch(struct got_object_id *commit_id,
2736     struct got_reference *head_ref, struct got_object_id *yca_id,
2737     struct got_repository *repo)
2738 {
2739 	const struct got_error *err = NULL;
2740 	struct got_commit_graph *graph = NULL;
2741 	struct got_object_id *head_commit_id = NULL;
2742 	int is_same_branch = 0;
2743 
2744 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2745 	if (err)
2746 		goto done;
2747 
2748 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2749 		is_same_branch = 1;
2750 		goto done;
2751 	}
2752 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2753 		is_same_branch = 1;
2754 		goto done;
2755 	}
2756 
2757 	err = got_commit_graph_open(&graph, "/", 1);
2758 	if (err)
2759 		goto done;
2760 
2761 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2762 	    check_cancelled, NULL);
2763 	if (err)
2764 		goto done;
2765 
2766 	for (;;) {
2767 		struct got_object_id *id;
2768 		err = got_commit_graph_iter_next(&id, graph, repo,
2769 		    check_cancelled, NULL);
2770 		if (err) {
2771 			if (err->code == GOT_ERR_ITER_COMPLETED)
2772 				err = NULL;
2773 			break;
2774 		}
2775 
2776 		if (id) {
2777 			if (yca_id && got_object_id_cmp(id, yca_id) == 0)
2778 				break;
2779 			if (got_object_id_cmp(id, commit_id) == 0) {
2780 				is_same_branch = 1;
2781 				break;
2782 			}
2783 		}
2784 	}
2785 done:
2786 	if (graph)
2787 		got_commit_graph_close(graph);
2788 	free(head_commit_id);
2789 	if (!err && !is_same_branch)
2790 		err = got_error(GOT_ERR_ANCESTRY);
2791 	return err;
2792 }
2793 
2794 static const struct got_error *
2795 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2796 {
2797 	static char msg[512];
2798 	const char *branch_name;
2799 
2800 	if (got_ref_is_symbolic(ref))
2801 		branch_name = got_ref_get_symref_target(ref);
2802 	else
2803 		branch_name = got_ref_get_name(ref);
2804 
2805 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2806 		branch_name += 11;
2807 
2808 	snprintf(msg, sizeof(msg),
2809 	    "target commit is not contained in branch '%s'; "
2810 	    "the branch to use must be specified with -b; "
2811 	    "if necessary a new branch can be created for "
2812 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2813 	    branch_name, commit_id_str);
2814 
2815 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2816 }
2817 
2818 static const struct got_error *
2819 cmd_checkout(int argc, char *argv[])
2820 {
2821 	const struct got_error *error = NULL;
2822 	struct got_repository *repo = NULL;
2823 	struct got_reference *head_ref = NULL;
2824 	struct got_worktree *worktree = NULL;
2825 	char *repo_path = NULL;
2826 	char *worktree_path = NULL;
2827 	const char *path_prefix = "";
2828 	const char *branch_name = GOT_REF_HEAD;
2829 	char *commit_id_str = NULL;
2830 	char *cwd = NULL;
2831 	int ch, same_path_prefix, allow_nonempty = 0;
2832 	struct got_pathlist_head paths;
2833 	struct got_checkout_progress_arg cpa;
2834 
2835 	TAILQ_INIT(&paths);
2836 
2837 	while ((ch = getopt(argc, argv, "b:c:Ep:")) != -1) {
2838 		switch (ch) {
2839 		case 'b':
2840 			branch_name = optarg;
2841 			break;
2842 		case 'c':
2843 			commit_id_str = strdup(optarg);
2844 			if (commit_id_str == NULL)
2845 				return got_error_from_errno("strdup");
2846 			break;
2847 		case 'E':
2848 			allow_nonempty = 1;
2849 			break;
2850 		case 'p':
2851 			path_prefix = optarg;
2852 			break;
2853 		default:
2854 			usage_checkout();
2855 			/* NOTREACHED */
2856 		}
2857 	}
2858 
2859 	argc -= optind;
2860 	argv += optind;
2861 
2862 #ifndef PROFILE
2863 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2864 	    "unveil", NULL) == -1)
2865 		err(1, "pledge");
2866 #endif
2867 	if (argc == 1) {
2868 		char *base, *dotgit;
2869 		const char *path;
2870 		repo_path = realpath(argv[0], NULL);
2871 		if (repo_path == NULL)
2872 			return got_error_from_errno2("realpath", argv[0]);
2873 		cwd = getcwd(NULL, 0);
2874 		if (cwd == NULL) {
2875 			error = got_error_from_errno("getcwd");
2876 			goto done;
2877 		}
2878 		if (path_prefix[0])
2879 			path = path_prefix;
2880 		else
2881 			path = repo_path;
2882 		error = got_path_basename(&base, path);
2883 		if (error)
2884 			goto done;
2885 		dotgit = strstr(base, ".git");
2886 		if (dotgit)
2887 			*dotgit = '\0';
2888 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
2889 			error = got_error_from_errno("asprintf");
2890 			free(base);
2891 			goto done;
2892 		}
2893 		free(base);
2894 	} else if (argc == 2) {
2895 		repo_path = realpath(argv[0], NULL);
2896 		if (repo_path == NULL) {
2897 			error = got_error_from_errno2("realpath", argv[0]);
2898 			goto done;
2899 		}
2900 		worktree_path = realpath(argv[1], NULL);
2901 		if (worktree_path == NULL) {
2902 			if (errno != ENOENT) {
2903 				error = got_error_from_errno2("realpath",
2904 				    argv[1]);
2905 				goto done;
2906 			}
2907 			worktree_path = strdup(argv[1]);
2908 			if (worktree_path == NULL) {
2909 				error = got_error_from_errno("strdup");
2910 				goto done;
2911 			}
2912 		}
2913 	} else
2914 		usage_checkout();
2915 
2916 	got_path_strip_trailing_slashes(repo_path);
2917 	got_path_strip_trailing_slashes(worktree_path);
2918 
2919 	error = got_repo_open(&repo, repo_path, NULL);
2920 	if (error != NULL)
2921 		goto done;
2922 
2923 	/* Pre-create work tree path for unveil(2) */
2924 	error = got_path_mkdir(worktree_path);
2925 	if (error) {
2926 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
2927 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2928 			goto done;
2929 		if (!allow_nonempty &&
2930 		    !got_path_dir_is_empty(worktree_path)) {
2931 			error = got_error_path(worktree_path,
2932 			    GOT_ERR_DIR_NOT_EMPTY);
2933 			goto done;
2934 		}
2935 	}
2936 
2937 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
2938 	if (error)
2939 		goto done;
2940 
2941 	error = got_ref_open(&head_ref, repo, branch_name, 0);
2942 	if (error != NULL)
2943 		goto done;
2944 
2945 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
2946 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2947 		goto done;
2948 
2949 	error = got_worktree_open(&worktree, worktree_path);
2950 	if (error != NULL)
2951 		goto done;
2952 
2953 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
2954 	    path_prefix);
2955 	if (error != NULL)
2956 		goto done;
2957 	if (!same_path_prefix) {
2958 		error = got_error(GOT_ERR_PATH_PREFIX);
2959 		goto done;
2960 	}
2961 
2962 	if (commit_id_str) {
2963 		struct got_object_id *commit_id;
2964 		struct got_reflist_head refs;
2965 		TAILQ_INIT(&refs);
2966 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
2967 		    NULL);
2968 		if (error)
2969 			goto done;
2970 		error = got_repo_match_object_id(&commit_id, NULL,
2971 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
2972 		got_ref_list_free(&refs);
2973 		if (error)
2974 			goto done;
2975 		error = check_linear_ancestry(commit_id,
2976 		    got_worktree_get_base_commit_id(worktree), 0, repo);
2977 		if (error != NULL) {
2978 			free(commit_id);
2979 			if (error->code == GOT_ERR_ANCESTRY) {
2980 				error = checkout_ancestry_error(
2981 				    head_ref, commit_id_str);
2982 			}
2983 			goto done;
2984 		}
2985 		error = check_same_branch(commit_id, head_ref, NULL, repo);
2986 		if (error) {
2987 			if (error->code == GOT_ERR_ANCESTRY) {
2988 				error = checkout_ancestry_error(
2989 				    head_ref, commit_id_str);
2990 			}
2991 			goto done;
2992 		}
2993 		error = got_worktree_set_base_commit_id(worktree, repo,
2994 		    commit_id);
2995 		free(commit_id);
2996 		if (error)
2997 			goto done;
2998 	}
2999 
3000 	error = got_pathlist_append(&paths, "", NULL);
3001 	if (error)
3002 		goto done;
3003 	cpa.worktree_path = worktree_path;
3004 	cpa.had_base_commit_ref_error = 0;
3005 	error = got_worktree_checkout_files(worktree, &paths, repo,
3006 	    checkout_progress, &cpa, check_cancelled, NULL);
3007 	if (error != NULL)
3008 		goto done;
3009 
3010 	printf("Now shut up and hack\n");
3011 	if (cpa.had_base_commit_ref_error)
3012 		show_worktree_base_ref_warning();
3013 done:
3014 	got_pathlist_free(&paths);
3015 	free(commit_id_str);
3016 	free(repo_path);
3017 	free(worktree_path);
3018 	free(cwd);
3019 	return error;
3020 }
3021 
3022 struct got_update_progress_arg {
3023 	int did_something;
3024 	int conflicts;
3025 	int obstructed;
3026 	int not_updated;
3027 };
3028 
3029 void
3030 print_update_progress_stats(struct got_update_progress_arg *upa)
3031 {
3032 	if (!upa->did_something)
3033 		return;
3034 
3035 	if (upa->conflicts > 0)
3036 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3037 	if (upa->obstructed > 0)
3038 		printf("File paths obstructed by a non-regular file: %d\n",
3039 		    upa->obstructed);
3040 	if (upa->not_updated > 0)
3041 		printf("Files not updated because of existing merge "
3042 		    "conflicts: %d\n", upa->not_updated);
3043 }
3044 
3045 __dead static void
3046 usage_update(void)
3047 {
3048 	fprintf(stderr, "usage: %s update [-b branch] [-c commit] [path ...]\n",
3049 	    getprogname());
3050 	exit(1);
3051 }
3052 
3053 static const struct got_error *
3054 update_progress(void *arg, unsigned char status, const char *path)
3055 {
3056 	struct got_update_progress_arg *upa = arg;
3057 
3058 	if (status == GOT_STATUS_EXISTS ||
3059 	    status == GOT_STATUS_BASE_REF_ERR)
3060 		return NULL;
3061 
3062 	upa->did_something = 1;
3063 
3064 	/* Base commit bump happens silently. */
3065 	if (status == GOT_STATUS_BUMP_BASE)
3066 		return NULL;
3067 
3068 	if (status == GOT_STATUS_CONFLICT)
3069 		upa->conflicts++;
3070 	if (status == GOT_STATUS_OBSTRUCTED)
3071 		upa->obstructed++;
3072 	if (status == GOT_STATUS_CANNOT_UPDATE)
3073 		upa->not_updated++;
3074 
3075 	while (path[0] == '/')
3076 		path++;
3077 	printf("%c  %s\n", status, path);
3078 	return NULL;
3079 }
3080 
3081 static const struct got_error *
3082 switch_head_ref(struct got_reference *head_ref,
3083     struct got_object_id *commit_id, struct got_worktree *worktree,
3084     struct got_repository *repo)
3085 {
3086 	const struct got_error *err = NULL;
3087 	char *base_id_str;
3088 	int ref_has_moved = 0;
3089 
3090 	/* Trivial case: switching between two different references. */
3091 	if (strcmp(got_ref_get_name(head_ref),
3092 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3093 		printf("Switching work tree from %s to %s\n",
3094 		    got_worktree_get_head_ref_name(worktree),
3095 		    got_ref_get_name(head_ref));
3096 		return got_worktree_set_head_ref(worktree, head_ref);
3097 	}
3098 
3099 	err = check_linear_ancestry(commit_id,
3100 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3101 	if (err) {
3102 		if (err->code != GOT_ERR_ANCESTRY)
3103 			return err;
3104 		ref_has_moved = 1;
3105 	}
3106 	if (!ref_has_moved)
3107 		return NULL;
3108 
3109 	/* Switching to a rebased branch with the same reference name. */
3110 	err = got_object_id_str(&base_id_str,
3111 	    got_worktree_get_base_commit_id(worktree));
3112 	if (err)
3113 		return err;
3114 	printf("Reference %s now points at a different branch\n",
3115 	    got_worktree_get_head_ref_name(worktree));
3116 	printf("Switching work tree from %s to %s\n", base_id_str,
3117 	    got_worktree_get_head_ref_name(worktree));
3118 	return NULL;
3119 }
3120 
3121 static const struct got_error *
3122 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3123 {
3124 	const struct got_error *err;
3125 	int in_progress;
3126 
3127 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3128 	if (err)
3129 		return err;
3130 	if (in_progress)
3131 		return got_error(GOT_ERR_REBASING);
3132 
3133 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3134 	if (err)
3135 		return err;
3136 	if (in_progress)
3137 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3138 
3139 	return NULL;
3140 }
3141 
3142 static const struct got_error *
3143 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3144     char *argv[], struct got_worktree *worktree)
3145 {
3146 	const struct got_error *err = NULL;
3147 	char *path;
3148 	int i;
3149 
3150 	if (argc == 0) {
3151 		path = strdup("");
3152 		if (path == NULL)
3153 			return got_error_from_errno("strdup");
3154 		return got_pathlist_append(paths, path, NULL);
3155 	}
3156 
3157 	for (i = 0; i < argc; i++) {
3158 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3159 		if (err)
3160 			break;
3161 		err = got_pathlist_append(paths, path, NULL);
3162 		if (err) {
3163 			free(path);
3164 			break;
3165 		}
3166 	}
3167 
3168 	return err;
3169 }
3170 
3171 static const struct got_error *
3172 wrap_not_worktree_error(const struct got_error *orig_err,
3173     const char *cmdname, const char *path)
3174 {
3175 	const struct got_error *err;
3176 	struct got_repository *repo;
3177 	static char msg[512];
3178 
3179 	err = got_repo_open(&repo, path, NULL);
3180 	if (err)
3181 		return orig_err;
3182 
3183 	snprintf(msg, sizeof(msg),
3184 	    "'got %s' needs a work tree in addition to a git repository\n"
3185 	    "Work trees can be checked out from this Git repository with "
3186 	    "'got checkout'.\n"
3187 	    "The got(1) manual page contains more information.", cmdname);
3188 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3189 	got_repo_close(repo);
3190 	return err;
3191 }
3192 
3193 static const struct got_error *
3194 cmd_update(int argc, char *argv[])
3195 {
3196 	const struct got_error *error = NULL;
3197 	struct got_repository *repo = NULL;
3198 	struct got_worktree *worktree = NULL;
3199 	char *worktree_path = NULL;
3200 	struct got_object_id *commit_id = NULL;
3201 	char *commit_id_str = NULL;
3202 	const char *branch_name = NULL;
3203 	struct got_reference *head_ref = NULL;
3204 	struct got_pathlist_head paths;
3205 	struct got_pathlist_entry *pe;
3206 	int ch;
3207 	struct got_update_progress_arg upa;
3208 
3209 	TAILQ_INIT(&paths);
3210 
3211 	while ((ch = getopt(argc, argv, "b:c:")) != -1) {
3212 		switch (ch) {
3213 		case 'b':
3214 			branch_name = optarg;
3215 			break;
3216 		case 'c':
3217 			commit_id_str = strdup(optarg);
3218 			if (commit_id_str == NULL)
3219 				return got_error_from_errno("strdup");
3220 			break;
3221 		default:
3222 			usage_update();
3223 			/* NOTREACHED */
3224 		}
3225 	}
3226 
3227 	argc -= optind;
3228 	argv += optind;
3229 
3230 #ifndef PROFILE
3231 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3232 	    "unveil", NULL) == -1)
3233 		err(1, "pledge");
3234 #endif
3235 	worktree_path = getcwd(NULL, 0);
3236 	if (worktree_path == NULL) {
3237 		error = got_error_from_errno("getcwd");
3238 		goto done;
3239 	}
3240 	error = got_worktree_open(&worktree, worktree_path);
3241 	if (error) {
3242 		if (error->code == GOT_ERR_NOT_WORKTREE)
3243 			error = wrap_not_worktree_error(error, "update",
3244 			    worktree_path);
3245 		goto done;
3246 	}
3247 
3248 	error = check_rebase_or_histedit_in_progress(worktree);
3249 	if (error)
3250 		goto done;
3251 
3252 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3253 	    NULL);
3254 	if (error != NULL)
3255 		goto done;
3256 
3257 	error = apply_unveil(got_repo_get_path(repo), 0,
3258 	    got_worktree_get_root_path(worktree));
3259 	if (error)
3260 		goto done;
3261 
3262 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3263 	if (error)
3264 		goto done;
3265 
3266 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3267 	    got_worktree_get_head_ref_name(worktree), 0);
3268 	if (error != NULL)
3269 		goto done;
3270 	if (commit_id_str == NULL) {
3271 		error = got_ref_resolve(&commit_id, repo, head_ref);
3272 		if (error != NULL)
3273 			goto done;
3274 		error = got_object_id_str(&commit_id_str, commit_id);
3275 		if (error != NULL)
3276 			goto done;
3277 	} else {
3278 		struct got_reflist_head refs;
3279 		TAILQ_INIT(&refs);
3280 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3281 		    NULL);
3282 		if (error)
3283 			goto done;
3284 		error = got_repo_match_object_id(&commit_id, NULL,
3285 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3286 		got_ref_list_free(&refs);
3287 		free(commit_id_str);
3288 		commit_id_str = NULL;
3289 		if (error)
3290 			goto done;
3291 		error = got_object_id_str(&commit_id_str, commit_id);
3292 		if (error)
3293 			goto done;
3294 	}
3295 
3296 	if (branch_name) {
3297 		struct got_object_id *head_commit_id;
3298 		TAILQ_FOREACH(pe, &paths, entry) {
3299 			if (pe->path_len == 0)
3300 				continue;
3301 			error = got_error_msg(GOT_ERR_BAD_PATH,
3302 			    "switching between branches requires that "
3303 			    "the entire work tree gets updated");
3304 			goto done;
3305 		}
3306 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3307 		if (error)
3308 			goto done;
3309 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3310 		    repo);
3311 		free(head_commit_id);
3312 		if (error != NULL)
3313 			goto done;
3314 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3315 		if (error)
3316 			goto done;
3317 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3318 		if (error)
3319 			goto done;
3320 	} else {
3321 		error = check_linear_ancestry(commit_id,
3322 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3323 		if (error != NULL) {
3324 			if (error->code == GOT_ERR_ANCESTRY)
3325 				error = got_error(GOT_ERR_BRANCH_MOVED);
3326 			goto done;
3327 		}
3328 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3329 		if (error)
3330 			goto done;
3331 	}
3332 
3333 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3334 	    commit_id) != 0) {
3335 		error = got_worktree_set_base_commit_id(worktree, repo,
3336 		    commit_id);
3337 		if (error)
3338 			goto done;
3339 	}
3340 
3341 	memset(&upa, 0, sizeof(upa));
3342 	error = got_worktree_checkout_files(worktree, &paths, repo,
3343 	    update_progress, &upa, check_cancelled, NULL);
3344 	if (error != NULL)
3345 		goto done;
3346 
3347 	if (upa.did_something)
3348 		printf("Updated to commit %s\n", commit_id_str);
3349 	else
3350 		printf("Already up-to-date\n");
3351 	print_update_progress_stats(&upa);
3352 done:
3353 	free(worktree_path);
3354 	TAILQ_FOREACH(pe, &paths, entry)
3355 		free((char *)pe->path);
3356 	got_pathlist_free(&paths);
3357 	free(commit_id);
3358 	free(commit_id_str);
3359 	return error;
3360 }
3361 
3362 static const struct got_error *
3363 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3364     const char *path, int diff_context, int ignore_whitespace,
3365     int force_text_diff, struct got_repository *repo)
3366 {
3367 	const struct got_error *err = NULL;
3368 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3369 
3370 	if (blob_id1) {
3371 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192);
3372 		if (err)
3373 			goto done;
3374 	}
3375 
3376 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192);
3377 	if (err)
3378 		goto done;
3379 
3380 	while (path[0] == '/')
3381 		path++;
3382 	err = got_diff_blob(NULL, NULL, blob1, blob2, path, path,
3383 	    diff_context, ignore_whitespace, force_text_diff, stdout);
3384 done:
3385 	if (blob1)
3386 		got_object_blob_close(blob1);
3387 	got_object_blob_close(blob2);
3388 	return err;
3389 }
3390 
3391 static const struct got_error *
3392 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3393     const char *path, int diff_context, int ignore_whitespace,
3394     int force_text_diff, struct got_repository *repo)
3395 {
3396 	const struct got_error *err = NULL;
3397 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3398 	struct got_diff_blob_output_unidiff_arg arg;
3399 
3400 	if (tree_id1) {
3401 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3402 		if (err)
3403 			goto done;
3404 	}
3405 
3406 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3407 	if (err)
3408 		goto done;
3409 
3410 	arg.diff_context = diff_context;
3411 	arg.ignore_whitespace = ignore_whitespace;
3412 	arg.force_text_diff = force_text_diff;
3413 	arg.outfile = stdout;
3414 	arg.line_offsets = NULL;
3415 	arg.nlines = 0;
3416 	while (path[0] == '/')
3417 		path++;
3418 	err = got_diff_tree(tree1, tree2, path, path, repo,
3419 	    got_diff_blob_output_unidiff, &arg, 1);
3420 done:
3421 	if (tree1)
3422 		got_object_tree_close(tree1);
3423 	if (tree2)
3424 		got_object_tree_close(tree2);
3425 	return err;
3426 }
3427 
3428 static const struct got_error *
3429 get_changed_paths(struct got_pathlist_head *paths,
3430     struct got_commit_object *commit, struct got_repository *repo)
3431 {
3432 	const struct got_error *err = NULL;
3433 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3434 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3435 	struct got_object_qid *qid;
3436 
3437 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3438 	if (qid != NULL) {
3439 		struct got_commit_object *pcommit;
3440 		err = got_object_open_as_commit(&pcommit, repo,
3441 		    qid->id);
3442 		if (err)
3443 			return err;
3444 
3445 		tree_id1 = got_object_id_dup(
3446 		    got_object_commit_get_tree_id(pcommit));
3447 		if (tree_id1 == NULL) {
3448 			got_object_commit_close(pcommit);
3449 			return got_error_from_errno("got_object_id_dup");
3450 		}
3451 		got_object_commit_close(pcommit);
3452 
3453 	}
3454 
3455 	if (tree_id1) {
3456 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3457 		if (err)
3458 			goto done;
3459 	}
3460 
3461 	tree_id2 = got_object_commit_get_tree_id(commit);
3462 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3463 	if (err)
3464 		goto done;
3465 
3466 	err = got_diff_tree(tree1, tree2, "", "", repo,
3467 	    got_diff_tree_collect_changed_paths, paths, 0);
3468 done:
3469 	if (tree1)
3470 		got_object_tree_close(tree1);
3471 	if (tree2)
3472 		got_object_tree_close(tree2);
3473 	free(tree_id1);
3474 	return err;
3475 }
3476 
3477 static const struct got_error *
3478 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3479     const char *path, int diff_context, struct got_repository *repo)
3480 {
3481 	const struct got_error *err = NULL;
3482 	struct got_commit_object *pcommit = NULL;
3483 	char *id_str1 = NULL, *id_str2 = NULL;
3484 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3485 	struct got_object_qid *qid;
3486 
3487 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3488 	if (qid != NULL) {
3489 		err = got_object_open_as_commit(&pcommit, repo,
3490 		    qid->id);
3491 		if (err)
3492 			return err;
3493 	}
3494 
3495 	if (path && path[0] != '\0') {
3496 		int obj_type;
3497 		err = got_object_id_by_path(&obj_id2, repo, id, path);
3498 		if (err)
3499 			goto done;
3500 		err = got_object_id_str(&id_str2, obj_id2);
3501 		if (err) {
3502 			free(obj_id2);
3503 			goto done;
3504 		}
3505 		if (pcommit) {
3506 			err = got_object_id_by_path(&obj_id1, repo,
3507 			    qid->id, path);
3508 			if (err) {
3509 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3510 					free(obj_id2);
3511 					goto done;
3512 				}
3513 			} else {
3514 				err = got_object_id_str(&id_str1, obj_id1);
3515 				if (err) {
3516 					free(obj_id2);
3517 					goto done;
3518 				}
3519 			}
3520 		}
3521 		err = got_object_get_type(&obj_type, repo, obj_id2);
3522 		if (err) {
3523 			free(obj_id2);
3524 			goto done;
3525 		}
3526 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3527 		switch (obj_type) {
3528 		case GOT_OBJ_TYPE_BLOB:
3529 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3530 			    0, 0, repo);
3531 			break;
3532 		case GOT_OBJ_TYPE_TREE:
3533 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3534 			    0, 0, repo);
3535 			break;
3536 		default:
3537 			err = got_error(GOT_ERR_OBJ_TYPE);
3538 			break;
3539 		}
3540 		free(obj_id1);
3541 		free(obj_id2);
3542 	} else {
3543 		obj_id2 = got_object_commit_get_tree_id(commit);
3544 		err = got_object_id_str(&id_str2, obj_id2);
3545 		if (err)
3546 			goto done;
3547 		if (pcommit) {
3548 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3549 			err = got_object_id_str(&id_str1, obj_id1);
3550 			if (err)
3551 				goto done;
3552 		}
3553 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null",
3554 		    id_str2);
3555 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3556 		    repo);
3557 	}
3558 done:
3559 	free(id_str1);
3560 	free(id_str2);
3561 	if (pcommit)
3562 		got_object_commit_close(pcommit);
3563 	return err;
3564 }
3565 
3566 static char *
3567 get_datestr(time_t *time, char *datebuf)
3568 {
3569 	struct tm mytm, *tm;
3570 	char *p, *s;
3571 
3572 	tm = gmtime_r(time, &mytm);
3573 	if (tm == NULL)
3574 		return NULL;
3575 	s = asctime_r(tm, datebuf);
3576 	if (s == NULL)
3577 		return NULL;
3578 	p = strchr(s, '\n');
3579 	if (p)
3580 		*p = '\0';
3581 	return s;
3582 }
3583 
3584 static const struct got_error *
3585 match_logmsg(int *have_match, struct got_object_id *id,
3586     struct got_commit_object *commit, regex_t *regex)
3587 {
3588 	const struct got_error *err = NULL;
3589 	regmatch_t regmatch;
3590 	char *id_str = NULL, *logmsg = NULL;
3591 
3592 	*have_match = 0;
3593 
3594 	err = got_object_id_str(&id_str, id);
3595 	if (err)
3596 		return err;
3597 
3598 	err = got_object_commit_get_logmsg(&logmsg, commit);
3599 	if (err)
3600 		goto done;
3601 
3602 	if (regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3603 		*have_match = 1;
3604 done:
3605 	free(id_str);
3606 	free(logmsg);
3607 	return err;
3608 }
3609 
3610 static void
3611 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3612     regex_t *regex)
3613 {
3614 	regmatch_t regmatch;
3615 	struct got_pathlist_entry *pe;
3616 
3617 	*have_match = 0;
3618 
3619 	TAILQ_FOREACH(pe, changed_paths, entry) {
3620 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3621 			*have_match = 1;
3622 			break;
3623 		}
3624 	}
3625 }
3626 
3627 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3628 
3629 static const struct got_error*
3630 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3631     struct got_object_id *id, struct got_repository *repo)
3632 {
3633 	static const struct got_error *err = NULL;
3634 	struct got_reflist_entry *re;
3635 	char *s;
3636 	const char *name;
3637 
3638 	*refs_str = NULL;
3639 
3640 	TAILQ_FOREACH(re, refs, entry) {
3641 		struct got_tag_object *tag = NULL;
3642 		struct got_object_id *ref_id;
3643 		int cmp;
3644 
3645 		name = got_ref_get_name(re->ref);
3646 		if (strcmp(name, GOT_REF_HEAD) == 0)
3647 			continue;
3648 		if (strncmp(name, "refs/", 5) == 0)
3649 			name += 5;
3650 		if (strncmp(name, "got/", 4) == 0)
3651 			continue;
3652 		if (strncmp(name, "heads/", 6) == 0)
3653 			name += 6;
3654 		if (strncmp(name, "remotes/", 8) == 0) {
3655 			name += 8;
3656 			s = strstr(name, "/" GOT_REF_HEAD);
3657 			if (s != NULL && s[strlen(s)] == '\0')
3658 				continue;
3659 		}
3660 		err = got_ref_resolve(&ref_id, repo, re->ref);
3661 		if (err)
3662 			break;
3663 		if (strncmp(name, "tags/", 5) == 0) {
3664 			err = got_object_open_as_tag(&tag, repo, ref_id);
3665 			if (err) {
3666 				if (err->code != GOT_ERR_OBJ_TYPE) {
3667 					free(ref_id);
3668 					break;
3669 				}
3670 				/* Ref points at something other than a tag. */
3671 				err = NULL;
3672 				tag = NULL;
3673 			}
3674 		}
3675 		cmp = got_object_id_cmp(tag ?
3676 		    got_object_tag_get_object_id(tag) : ref_id, id);
3677 		free(ref_id);
3678 		if (tag)
3679 			got_object_tag_close(tag);
3680 		if (cmp != 0)
3681 			continue;
3682 		s = *refs_str;
3683 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
3684 		    s ? ", " : "", name) == -1) {
3685 			err = got_error_from_errno("asprintf");
3686 			free(s);
3687 			*refs_str = NULL;
3688 			break;
3689 		}
3690 		free(s);
3691 	}
3692 
3693 	return err;
3694 }
3695 
3696 static const struct got_error *
3697 print_commit(struct got_commit_object *commit, struct got_object_id *id,
3698     struct got_repository *repo, const char *path,
3699     struct got_pathlist_head *changed_paths, int show_patch,
3700     int diff_context, struct got_reflist_object_id_map *refs_idmap,
3701     const char *custom_refs_str)
3702 {
3703 	const struct got_error *err = NULL;
3704 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
3705 	char datebuf[26];
3706 	time_t committer_time;
3707 	const char *author, *committer;
3708 	char *refs_str = NULL;
3709 
3710 	err = got_object_id_str(&id_str, id);
3711 	if (err)
3712 		return err;
3713 
3714 	if (custom_refs_str == NULL) {
3715 		struct got_reflist_head *refs;
3716 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
3717 		if (refs) {
3718 			err = build_refs_str(&refs_str, refs, id, repo);
3719 			if (err)
3720 				goto done;
3721 		}
3722 	}
3723 
3724 	printf(GOT_COMMIT_SEP_STR);
3725 	if (custom_refs_str)
3726 		printf("commit %s (%s)\n", id_str, custom_refs_str); 
3727 	else
3728 		printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
3729 		    refs_str ? refs_str : "", refs_str ? ")" : "");
3730 	free(id_str);
3731 	id_str = NULL;
3732 	free(refs_str);
3733 	refs_str = NULL;
3734 	printf("from: %s\n", got_object_commit_get_author(commit));
3735 	committer_time = got_object_commit_get_committer_time(commit);
3736 	datestr = get_datestr(&committer_time, datebuf);
3737 	if (datestr)
3738 		printf("date: %s UTC\n", datestr);
3739 	author = got_object_commit_get_author(commit);
3740 	committer = got_object_commit_get_committer(commit);
3741 	if (strcmp(author, committer) != 0)
3742 		printf("via: %s\n", committer);
3743 	if (got_object_commit_get_nparents(commit) > 1) {
3744 		const struct got_object_id_queue *parent_ids;
3745 		struct got_object_qid *qid;
3746 		int n = 1;
3747 		parent_ids = got_object_commit_get_parent_ids(commit);
3748 		STAILQ_FOREACH(qid, parent_ids, entry) {
3749 			err = got_object_id_str(&id_str, qid->id);
3750 			if (err)
3751 				goto done;
3752 			printf("parent %d: %s\n", n++, id_str);
3753 			free(id_str);
3754 			id_str = NULL;
3755 		}
3756 	}
3757 
3758 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3759 	if (err)
3760 		goto done;
3761 
3762 	logmsg = logmsg0;
3763 	do {
3764 		line = strsep(&logmsg, "\n");
3765 		if (line)
3766 			printf(" %s\n", line);
3767 	} while (line);
3768 	free(logmsg0);
3769 
3770 	if (changed_paths) {
3771 		struct got_pathlist_entry *pe;
3772 		TAILQ_FOREACH(pe, changed_paths, entry) {
3773 			struct got_diff_changed_path *cp = pe->data;
3774 			printf(" %c  %s\n", cp->status, pe->path);
3775 		}
3776 		printf("\n");
3777 	}
3778 	if (show_patch) {
3779 		err = print_patch(commit, id, path, diff_context, repo);
3780 		if (err == 0)
3781 			printf("\n");
3782 	}
3783 
3784 	if (fflush(stdout) != 0 && err == NULL)
3785 		err = got_error_from_errno("fflush");
3786 done:
3787 	free(id_str);
3788 	free(refs_str);
3789 	return err;
3790 }
3791 
3792 static const struct got_error *
3793 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
3794     struct got_repository *repo, const char *path, int show_changed_paths,
3795     int show_patch, const char *search_pattern, int diff_context, int limit,
3796     int log_branches, int reverse_display_order,
3797     struct got_reflist_object_id_map *refs_idmap)
3798 {
3799 	const struct got_error *err;
3800 	struct got_commit_graph *graph;
3801 	regex_t regex;
3802 	int have_match;
3803 	struct got_object_id_queue reversed_commits;
3804 	struct got_object_qid *qid;
3805 	struct got_commit_object *commit;
3806 	struct got_pathlist_head changed_paths;
3807 	struct got_pathlist_entry *pe;
3808 
3809 	STAILQ_INIT(&reversed_commits);
3810 	TAILQ_INIT(&changed_paths);
3811 
3812 	if (search_pattern && regcomp(&regex, search_pattern,
3813 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
3814 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
3815 
3816 	err = got_commit_graph_open(&graph, path, !log_branches);
3817 	if (err)
3818 		return err;
3819 	err = got_commit_graph_iter_start(graph, root_id, repo,
3820 	    check_cancelled, NULL);
3821 	if (err)
3822 		goto done;
3823 	for (;;) {
3824 		struct got_object_id *id;
3825 
3826 		if (sigint_received || sigpipe_received)
3827 			break;
3828 
3829 		err = got_commit_graph_iter_next(&id, graph, repo,
3830 		    check_cancelled, NULL);
3831 		if (err) {
3832 			if (err->code == GOT_ERR_ITER_COMPLETED)
3833 				err = NULL;
3834 			break;
3835 		}
3836 		if (id == NULL)
3837 			break;
3838 
3839 		err = got_object_open_as_commit(&commit, repo, id);
3840 		if (err)
3841 			break;
3842 
3843 		if (show_changed_paths && !reverse_display_order) {
3844 			err = get_changed_paths(&changed_paths, commit, repo);
3845 			if (err)
3846 				break;
3847 		}
3848 
3849 		if (search_pattern) {
3850 			err = match_logmsg(&have_match, id, commit, &regex);
3851 			if (err) {
3852 				got_object_commit_close(commit);
3853 				break;
3854 			}
3855 			if (have_match == 0 && show_changed_paths)
3856 				match_changed_paths(&have_match,
3857 				    &changed_paths, &regex);
3858 			if (have_match == 0) {
3859 				got_object_commit_close(commit);
3860 				TAILQ_FOREACH(pe, &changed_paths, entry) {
3861 					free((char *)pe->path);
3862 					free(pe->data);
3863 				}
3864 				got_pathlist_free(&changed_paths);
3865 				continue;
3866 			}
3867 		}
3868 
3869 		if (reverse_display_order) {
3870 			err = got_object_qid_alloc(&qid, id);
3871 			if (err)
3872 				break;
3873 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
3874 			got_object_commit_close(commit);
3875 		} else {
3876 			err = print_commit(commit, id, repo, path,
3877 			    show_changed_paths ? &changed_paths : NULL,
3878 			    show_patch, diff_context, refs_idmap, NULL);
3879 			got_object_commit_close(commit);
3880 			if (err)
3881 				break;
3882 		}
3883 		if ((limit && --limit == 0) ||
3884 		    (end_id && got_object_id_cmp(id, end_id) == 0))
3885 			break;
3886 
3887 		TAILQ_FOREACH(pe, &changed_paths, entry) {
3888 			free((char *)pe->path);
3889 			free(pe->data);
3890 		}
3891 		got_pathlist_free(&changed_paths);
3892 	}
3893 	if (reverse_display_order) {
3894 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
3895 			err = got_object_open_as_commit(&commit, repo, qid->id);
3896 			if (err)
3897 				break;
3898 			if (show_changed_paths) {
3899 				err = get_changed_paths(&changed_paths,
3900 				    commit, repo);
3901 				if (err)
3902 					break;
3903 			}
3904 			err = print_commit(commit, qid->id, repo, path,
3905 			    show_changed_paths ? &changed_paths : NULL,
3906 			    show_patch, diff_context, refs_idmap, NULL);
3907 			got_object_commit_close(commit);
3908 			if (err)
3909 				break;
3910 			TAILQ_FOREACH(pe, &changed_paths, entry) {
3911 				free((char *)pe->path);
3912 				free(pe->data);
3913 			}
3914 			got_pathlist_free(&changed_paths);
3915 		}
3916 	}
3917 done:
3918 	while (!STAILQ_EMPTY(&reversed_commits)) {
3919 		qid = STAILQ_FIRST(&reversed_commits);
3920 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
3921 		got_object_qid_free(qid);
3922 	}
3923 	TAILQ_FOREACH(pe, &changed_paths, entry) {
3924 		free((char *)pe->path);
3925 		free(pe->data);
3926 	}
3927 	got_pathlist_free(&changed_paths);
3928 	if (search_pattern)
3929 		regfree(&regex);
3930 	got_commit_graph_close(graph);
3931 	return err;
3932 }
3933 
3934 __dead static void
3935 usage_log(void)
3936 {
3937 	fprintf(stderr, "usage: %s log [-b] [-c commit] [-C number] [ -l N ] "
3938 	    "[-p] [-P] [-x commit] [-s search-pattern] [-r repository-path] "
3939 	    "[-R] [path]\n", getprogname());
3940 	exit(1);
3941 }
3942 
3943 static int
3944 get_default_log_limit(void)
3945 {
3946 	const char *got_default_log_limit;
3947 	long long n;
3948 	const char *errstr;
3949 
3950 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
3951 	if (got_default_log_limit == NULL)
3952 		return 0;
3953 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
3954 	if (errstr != NULL)
3955 		return 0;
3956 	return n;
3957 }
3958 
3959 static const struct got_error *
3960 cmd_log(int argc, char *argv[])
3961 {
3962 	const struct got_error *error;
3963 	struct got_repository *repo = NULL;
3964 	struct got_worktree *worktree = NULL;
3965 	struct got_object_id *start_id = NULL, *end_id = NULL;
3966 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
3967 	const char *start_commit = NULL, *end_commit = NULL;
3968 	const char *search_pattern = NULL;
3969 	int diff_context = -1, ch;
3970 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
3971 	int reverse_display_order = 0;
3972 	const char *errstr;
3973 	struct got_reflist_head refs;
3974 	struct got_reflist_object_id_map *refs_idmap = NULL;
3975 
3976 	TAILQ_INIT(&refs);
3977 
3978 #ifndef PROFILE
3979 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
3980 	    NULL)
3981 	    == -1)
3982 		err(1, "pledge");
3983 #endif
3984 
3985 	limit = get_default_log_limit();
3986 
3987 	while ((ch = getopt(argc, argv, "bpPc:C:l:r:Rs:x:")) != -1) {
3988 		switch (ch) {
3989 		case 'p':
3990 			show_patch = 1;
3991 			break;
3992 		case 'P':
3993 			show_changed_paths = 1;
3994 			break;
3995 		case 'c':
3996 			start_commit = optarg;
3997 			break;
3998 		case 'C':
3999 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4000 			    &errstr);
4001 			if (errstr != NULL)
4002 				err(1, "-C option %s", errstr);
4003 			break;
4004 		case 'l':
4005 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4006 			if (errstr != NULL)
4007 				err(1, "-l option %s", errstr);
4008 			break;
4009 		case 'b':
4010 			log_branches = 1;
4011 			break;
4012 		case 'r':
4013 			repo_path = realpath(optarg, NULL);
4014 			if (repo_path == NULL)
4015 				return got_error_from_errno2("realpath",
4016 				    optarg);
4017 			got_path_strip_trailing_slashes(repo_path);
4018 			break;
4019 		case 'R':
4020 			reverse_display_order = 1;
4021 			break;
4022 		case 's':
4023 			search_pattern = optarg;
4024 			break;
4025 		case 'x':
4026 			end_commit = optarg;
4027 			break;
4028 		default:
4029 			usage_log();
4030 			/* NOTREACHED */
4031 		}
4032 	}
4033 
4034 	argc -= optind;
4035 	argv += optind;
4036 
4037 	if (diff_context == -1)
4038 		diff_context = 3;
4039 	else if (!show_patch)
4040 		errx(1, "-C requires -p");
4041 
4042 	cwd = getcwd(NULL, 0);
4043 	if (cwd == NULL) {
4044 		error = got_error_from_errno("getcwd");
4045 		goto done;
4046 	}
4047 
4048 	if (repo_path == NULL) {
4049 		error = got_worktree_open(&worktree, cwd);
4050 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4051 			goto done;
4052 		error = NULL;
4053 	}
4054 
4055 	if (argc == 1) {
4056 		if (worktree) {
4057 			error = got_worktree_resolve_path(&path, worktree,
4058 			    argv[0]);
4059 			if (error)
4060 				goto done;
4061 		} else {
4062 			path = strdup(argv[0]);
4063 			if (path == NULL) {
4064 				error = got_error_from_errno("strdup");
4065 				goto done;
4066 			}
4067 		}
4068 	} else if (argc != 0)
4069 		usage_log();
4070 
4071 	if (repo_path == NULL) {
4072 		repo_path = worktree ?
4073 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4074 	}
4075 	if (repo_path == NULL) {
4076 		error = got_error_from_errno("strdup");
4077 		goto done;
4078 	}
4079 
4080 	error = got_repo_open(&repo, repo_path, NULL);
4081 	if (error != NULL)
4082 		goto done;
4083 
4084 	error = apply_unveil(got_repo_get_path(repo), 1,
4085 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4086 	if (error)
4087 		goto done;
4088 
4089 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4090 	if (error)
4091 		goto done;
4092 
4093 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4094 	if (error)
4095 		goto done;
4096 
4097 	if (start_commit == NULL) {
4098 		struct got_reference *head_ref;
4099 		struct got_commit_object *commit = NULL;
4100 		error = got_ref_open(&head_ref, repo,
4101 		    worktree ? got_worktree_get_head_ref_name(worktree)
4102 		    : GOT_REF_HEAD, 0);
4103 		if (error != NULL)
4104 			goto done;
4105 		error = got_ref_resolve(&start_id, repo, head_ref);
4106 		got_ref_close(head_ref);
4107 		if (error != NULL)
4108 			goto done;
4109 		error = got_object_open_as_commit(&commit, repo,
4110 		    start_id);
4111 		if (error != NULL)
4112 			goto done;
4113 		got_object_commit_close(commit);
4114 	} else {
4115 		error = got_repo_match_object_id(&start_id, NULL,
4116 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4117 		if (error != NULL)
4118 			goto done;
4119 	}
4120 	if (end_commit != NULL) {
4121 		error = got_repo_match_object_id(&end_id, NULL,
4122 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4123 		if (error != NULL)
4124 			goto done;
4125 	}
4126 
4127 	if (worktree) {
4128 		/*
4129 		 * If a path was specified on the command line it was resolved
4130 		 * to a path in the work tree above. Prepend the work tree's
4131 		 * path prefix to obtain the corresponding in-repository path.
4132 		 */
4133 		if (path) {
4134 			const char *prefix;
4135 			prefix = got_worktree_get_path_prefix(worktree);
4136 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4137 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4138 				error = got_error_from_errno("asprintf");
4139 				goto done;
4140 			}
4141 		}
4142 	} else
4143 		error = got_repo_map_path(&in_repo_path, repo,
4144 		    path ? path : "");
4145 	if (error != NULL)
4146 		goto done;
4147 	if (in_repo_path) {
4148 		free(path);
4149 		path = in_repo_path;
4150 	}
4151 
4152 	error = print_commits(start_id, end_id, repo, path ? path : "",
4153 	    show_changed_paths, show_patch, search_pattern, diff_context,
4154 	    limit, log_branches, reverse_display_order, refs_idmap);
4155 done:
4156 	free(path);
4157 	free(repo_path);
4158 	free(cwd);
4159 	if (worktree)
4160 		got_worktree_close(worktree);
4161 	if (repo) {
4162 		const struct got_error *close_err = got_repo_close(repo);
4163 		if (error == NULL)
4164 			error = close_err;
4165 	}
4166 	if (refs_idmap)
4167 		got_reflist_object_id_map_free(refs_idmap);
4168 	got_ref_list_free(&refs);
4169 	return error;
4170 }
4171 
4172 __dead static void
4173 usage_diff(void)
4174 {
4175 	fprintf(stderr, "usage: %s diff [-a] [-C number] [-r repository-path] "
4176 	    "[-s] [-w] [object1 object2 | path]\n", getprogname());
4177 	exit(1);
4178 }
4179 
4180 struct print_diff_arg {
4181 	struct got_repository *repo;
4182 	struct got_worktree *worktree;
4183 	int diff_context;
4184 	const char *id_str;
4185 	int header_shown;
4186 	int diff_staged;
4187 	int ignore_whitespace;
4188 	int force_text_diff;
4189 };
4190 
4191 /*
4192  * Create a file which contains the target path of a symlink so we can feed
4193  * it as content to the diff engine.
4194  */
4195 static const struct got_error *
4196 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4197     const char *abspath)
4198 {
4199 	const struct got_error *err = NULL;
4200 	char target_path[PATH_MAX];
4201 	ssize_t target_len, outlen;
4202 
4203 	*fd = -1;
4204 
4205 	if (dirfd != -1) {
4206 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4207 		if (target_len == -1)
4208 			return got_error_from_errno2("readlinkat", abspath);
4209 	} else {
4210 		target_len = readlink(abspath, target_path, PATH_MAX);
4211 		if (target_len == -1)
4212 			return got_error_from_errno2("readlink", abspath);
4213 	}
4214 
4215 	*fd = got_opentempfd();
4216 	if (*fd == -1)
4217 		return got_error_from_errno("got_opentempfd");
4218 
4219 	outlen = write(*fd, target_path, target_len);
4220 	if (outlen == -1) {
4221 		err = got_error_from_errno("got_opentempfd");
4222 		goto done;
4223 	}
4224 
4225 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4226 		err = got_error_from_errno2("lseek", abspath);
4227 		goto done;
4228 	}
4229 done:
4230 	if (err) {
4231 		close(*fd);
4232 		*fd = -1;
4233 	}
4234 	return err;
4235 }
4236 
4237 static const struct got_error *
4238 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4239     const char *path, struct got_object_id *blob_id,
4240     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4241     int dirfd, const char *de_name)
4242 {
4243 	struct print_diff_arg *a = arg;
4244 	const struct got_error *err = NULL;
4245 	struct got_blob_object *blob1 = NULL;
4246 	int fd = -1;
4247 	FILE *f2 = NULL;
4248 	char *abspath = NULL, *label1 = NULL;
4249 	struct stat sb;
4250 
4251 	if (a->diff_staged) {
4252 		if (staged_status != GOT_STATUS_MODIFY &&
4253 		    staged_status != GOT_STATUS_ADD &&
4254 		    staged_status != GOT_STATUS_DELETE)
4255 			return NULL;
4256 	} else {
4257 		if (staged_status == GOT_STATUS_DELETE)
4258 			return NULL;
4259 		if (status == GOT_STATUS_NONEXISTENT)
4260 			return got_error_set_errno(ENOENT, path);
4261 		if (status != GOT_STATUS_MODIFY &&
4262 		    status != GOT_STATUS_ADD &&
4263 		    status != GOT_STATUS_DELETE &&
4264 		    status != GOT_STATUS_CONFLICT)
4265 			return NULL;
4266 	}
4267 
4268 	if (!a->header_shown) {
4269 		printf("diff %s %s%s\n", a->id_str,
4270 		    got_worktree_get_root_path(a->worktree),
4271 		    a->diff_staged ? " (staged changes)" : "");
4272 		a->header_shown = 1;
4273 	}
4274 
4275 	if (a->diff_staged) {
4276 		const char *label1 = NULL, *label2 = NULL;
4277 		switch (staged_status) {
4278 		case GOT_STATUS_MODIFY:
4279 			label1 = path;
4280 			label2 = path;
4281 			break;
4282 		case GOT_STATUS_ADD:
4283 			label2 = path;
4284 			break;
4285 		case GOT_STATUS_DELETE:
4286 			label1 = path;
4287 			break;
4288 		default:
4289 			return got_error(GOT_ERR_FILE_STATUS);
4290 		}
4291 		return got_diff_objects_as_blobs(NULL, NULL, blob_id,
4292 		    staged_blob_id, label1, label2, a->diff_context,
4293 		    a->ignore_whitespace, a->force_text_diff, a->repo, stdout);
4294 	}
4295 
4296 	if (staged_status == GOT_STATUS_ADD ||
4297 	    staged_status == GOT_STATUS_MODIFY) {
4298 		char *id_str;
4299 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4300 		    8192);
4301 		if (err)
4302 			goto done;
4303 		err = got_object_id_str(&id_str, staged_blob_id);
4304 		if (err)
4305 			goto done;
4306 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4307 			err = got_error_from_errno("asprintf");
4308 			free(id_str);
4309 			goto done;
4310 		}
4311 		free(id_str);
4312 	} else if (status != GOT_STATUS_ADD) {
4313 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192);
4314 		if (err)
4315 			goto done;
4316 	}
4317 
4318 	if (status != GOT_STATUS_DELETE) {
4319 		if (asprintf(&abspath, "%s/%s",
4320 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4321 			err = got_error_from_errno("asprintf");
4322 			goto done;
4323 		}
4324 
4325 		if (dirfd != -1) {
4326 			fd = openat(dirfd, de_name, O_RDONLY | O_NOFOLLOW);
4327 			if (fd == -1) {
4328 				if (errno != ELOOP) {
4329 					err = got_error_from_errno2("openat",
4330 					    abspath);
4331 					goto done;
4332 				}
4333 				err = get_symlink_target_file(&fd, dirfd,
4334 				    de_name, abspath);
4335 				if (err)
4336 					goto done;
4337 			}
4338 		} else {
4339 			fd = open(abspath, O_RDONLY | O_NOFOLLOW);
4340 			if (fd == -1) {
4341 				if (errno != ELOOP) {
4342 					err = got_error_from_errno2("open",
4343 					    abspath);
4344 					goto done;
4345 				}
4346 				err = get_symlink_target_file(&fd, dirfd,
4347 				    de_name, abspath);
4348 				if (err)
4349 					goto done;
4350 			}
4351 		}
4352 		if (fstat(fd, &sb) == -1) {
4353 			err = got_error_from_errno2("fstat", abspath);
4354 			goto done;
4355 		}
4356 		f2 = fdopen(fd, "r");
4357 		if (f2 == NULL) {
4358 			err = got_error_from_errno2("fdopen", abspath);
4359 			goto done;
4360 		}
4361 		fd = -1;
4362 	} else
4363 		sb.st_size = 0;
4364 
4365 	err = got_diff_blob_file(blob1, label1, f2, sb.st_size, path,
4366 	    a->diff_context, a->ignore_whitespace, a->force_text_diff, stdout);
4367 done:
4368 	if (blob1)
4369 		got_object_blob_close(blob1);
4370 	if (f2 && fclose(f2) == EOF && err == NULL)
4371 		err = got_error_from_errno("fclose");
4372 	if (fd != -1 && close(fd) == -1 && err == NULL)
4373 		err = got_error_from_errno("close");
4374 	free(abspath);
4375 	return err;
4376 }
4377 
4378 static const struct got_error *
4379 cmd_diff(int argc, char *argv[])
4380 {
4381 	const struct got_error *error;
4382 	struct got_repository *repo = NULL;
4383 	struct got_worktree *worktree = NULL;
4384 	char *cwd = NULL, *repo_path = NULL;
4385 	struct got_object_id *id1 = NULL, *id2 = NULL;
4386 	const char *id_str1 = NULL, *id_str2 = NULL;
4387 	char *label1 = NULL, *label2 = NULL;
4388 	int type1, type2;
4389 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch;
4390 	int force_text_diff = 0;
4391 	const char *errstr;
4392 	char *path = NULL;
4393 	struct got_reflist_head refs;
4394 
4395 	TAILQ_INIT(&refs);
4396 
4397 #ifndef PROFILE
4398 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4399 	    NULL) == -1)
4400 		err(1, "pledge");
4401 #endif
4402 
4403 	while ((ch = getopt(argc, argv, "aC:r:sw")) != -1) {
4404 		switch (ch) {
4405 		case 'a':
4406 			force_text_diff = 1;
4407 			break;
4408 		case 'C':
4409 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4410 			    &errstr);
4411 			if (errstr != NULL)
4412 				err(1, "-C option %s", errstr);
4413 			break;
4414 		case 'r':
4415 			repo_path = realpath(optarg, NULL);
4416 			if (repo_path == NULL)
4417 				return got_error_from_errno2("realpath",
4418 				    optarg);
4419 			got_path_strip_trailing_slashes(repo_path);
4420 			break;
4421 		case 's':
4422 			diff_staged = 1;
4423 			break;
4424 		case 'w':
4425 			ignore_whitespace = 1;
4426 			break;
4427 		default:
4428 			usage_diff();
4429 			/* NOTREACHED */
4430 		}
4431 	}
4432 
4433 	argc -= optind;
4434 	argv += optind;
4435 
4436 	cwd = getcwd(NULL, 0);
4437 	if (cwd == NULL) {
4438 		error = got_error_from_errno("getcwd");
4439 		goto done;
4440 	}
4441 	if (argc <= 1) {
4442 		if (repo_path)
4443 			errx(1,
4444 			    "-r option can't be used when diffing a work tree");
4445 		error = got_worktree_open(&worktree, cwd);
4446 		if (error) {
4447 			if (error->code == GOT_ERR_NOT_WORKTREE)
4448 				error = wrap_not_worktree_error(error, "diff",
4449 				    cwd);
4450 			goto done;
4451 		}
4452 		repo_path = strdup(got_worktree_get_repo_path(worktree));
4453 		if (repo_path == NULL) {
4454 			error = got_error_from_errno("strdup");
4455 			goto done;
4456 		}
4457 		if (argc == 1) {
4458 			error = got_worktree_resolve_path(&path, worktree,
4459 			    argv[0]);
4460 			if (error)
4461 				goto done;
4462 		} else {
4463 			path = strdup("");
4464 			if (path == NULL) {
4465 				error = got_error_from_errno("strdup");
4466 				goto done;
4467 			}
4468 		}
4469 	} else if (argc == 2) {
4470 		if (diff_staged)
4471 			errx(1, "-s option can't be used when diffing "
4472 			    "objects in repository");
4473 		id_str1 = argv[0];
4474 		id_str2 = argv[1];
4475 		if (repo_path == NULL) {
4476 			error = got_worktree_open(&worktree, cwd);
4477 			if (error && error->code != GOT_ERR_NOT_WORKTREE)
4478 				goto done;
4479 			repo_path = strdup(worktree ?
4480 			    got_worktree_get_repo_path(worktree) : cwd);
4481 			if (repo_path == NULL) {
4482 				error = got_error_from_errno("strdup");
4483 				goto done;
4484 			}
4485 		}
4486 	} else
4487 		usage_diff();
4488 
4489 	error = got_repo_open(&repo, repo_path, NULL);
4490 	free(repo_path);
4491 	if (error != NULL)
4492 		goto done;
4493 
4494 	error = apply_unveil(got_repo_get_path(repo), 1,
4495 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4496 	if (error)
4497 		goto done;
4498 
4499 	if (argc <= 1) {
4500 		struct print_diff_arg arg;
4501 		struct got_pathlist_head paths;
4502 		char *id_str;
4503 
4504 		TAILQ_INIT(&paths);
4505 
4506 		error = got_object_id_str(&id_str,
4507 		    got_worktree_get_base_commit_id(worktree));
4508 		if (error)
4509 			goto done;
4510 		arg.repo = repo;
4511 		arg.worktree = worktree;
4512 		arg.diff_context = diff_context;
4513 		arg.id_str = id_str;
4514 		arg.header_shown = 0;
4515 		arg.diff_staged = diff_staged;
4516 		arg.ignore_whitespace = ignore_whitespace;
4517 		arg.force_text_diff = force_text_diff;
4518 
4519 		error = got_pathlist_append(&paths, path, NULL);
4520 		if (error)
4521 			goto done;
4522 
4523 		error = got_worktree_status(worktree, &paths, repo, 0,
4524 		    print_diff, &arg, check_cancelled, NULL);
4525 		free(id_str);
4526 		got_pathlist_free(&paths);
4527 		goto done;
4528 	}
4529 
4530 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4531 	if (error)
4532 		return error;
4533 
4534 	error = got_repo_match_object_id(&id1, &label1, id_str1,
4535 	    GOT_OBJ_TYPE_ANY, &refs, repo);
4536 	if (error)
4537 		goto done;
4538 
4539 	error = got_repo_match_object_id(&id2, &label2, id_str2,
4540 	    GOT_OBJ_TYPE_ANY, &refs, repo);
4541 	if (error)
4542 		goto done;
4543 
4544 	error = got_object_get_type(&type1, repo, id1);
4545 	if (error)
4546 		goto done;
4547 
4548 	error = got_object_get_type(&type2, repo, id2);
4549 	if (error)
4550 		goto done;
4551 
4552 	if (type1 != type2) {
4553 		error = got_error(GOT_ERR_OBJ_TYPE);
4554 		goto done;
4555 	}
4556 
4557 	switch (type1) {
4558 	case GOT_OBJ_TYPE_BLOB:
4559 		error = got_diff_objects_as_blobs(NULL, NULL, id1, id2,
4560 		    NULL, NULL, diff_context, ignore_whitespace,
4561 		    force_text_diff, repo, stdout);
4562 		break;
4563 	case GOT_OBJ_TYPE_TREE:
4564 		error = got_diff_objects_as_trees(NULL, NULL, id1, id2,
4565 		    "", "", diff_context, ignore_whitespace, force_text_diff,
4566 		    repo, stdout);
4567 		break;
4568 	case GOT_OBJ_TYPE_COMMIT:
4569 		printf("diff %s %s\n", label1, label2);
4570 		error = got_diff_objects_as_commits(NULL, NULL, id1, id2,
4571 		    diff_context, ignore_whitespace, force_text_diff, repo,
4572 		    stdout);
4573 		break;
4574 	default:
4575 		error = got_error(GOT_ERR_OBJ_TYPE);
4576 	}
4577 done:
4578 	free(label1);
4579 	free(label2);
4580 	free(id1);
4581 	free(id2);
4582 	free(path);
4583 	if (worktree)
4584 		got_worktree_close(worktree);
4585 	if (repo) {
4586 		const struct got_error *close_err = got_repo_close(repo);
4587 		if (error == NULL)
4588 			error = close_err;
4589 	}
4590 	got_ref_list_free(&refs);
4591 	return error;
4592 }
4593 
4594 __dead static void
4595 usage_blame(void)
4596 {
4597 	fprintf(stderr,
4598 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
4599 	    getprogname());
4600 	exit(1);
4601 }
4602 
4603 struct blame_line {
4604 	int annotated;
4605 	char *id_str;
4606 	char *committer;
4607 	char datebuf[11]; /* YYYY-MM-DD + NUL */
4608 };
4609 
4610 struct blame_cb_args {
4611 	struct blame_line *lines;
4612 	int nlines;
4613 	int nlines_prec;
4614 	int lineno_cur;
4615 	off_t *line_offsets;
4616 	FILE *f;
4617 	struct got_repository *repo;
4618 };
4619 
4620 static const struct got_error *
4621 blame_cb(void *arg, int nlines, int lineno, struct got_object_id *id)
4622 {
4623 	const struct got_error *err = NULL;
4624 	struct blame_cb_args *a = arg;
4625 	struct blame_line *bline;
4626 	char *line = NULL;
4627 	size_t linesize = 0;
4628 	struct got_commit_object *commit = NULL;
4629 	off_t offset;
4630 	struct tm tm;
4631 	time_t committer_time;
4632 
4633 	if (nlines != a->nlines ||
4634 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
4635 		return got_error(GOT_ERR_RANGE);
4636 
4637 	if (sigint_received)
4638 		return got_error(GOT_ERR_ITER_COMPLETED);
4639 
4640 	if (lineno == -1)
4641 		return NULL; /* no change in this commit */
4642 
4643 	/* Annotate this line. */
4644 	bline = &a->lines[lineno - 1];
4645 	if (bline->annotated)
4646 		return NULL;
4647 	err = got_object_id_str(&bline->id_str, id);
4648 	if (err)
4649 		return err;
4650 
4651 	err = got_object_open_as_commit(&commit, a->repo, id);
4652 	if (err)
4653 		goto done;
4654 
4655 	bline->committer = strdup(got_object_commit_get_committer(commit));
4656 	if (bline->committer == NULL) {
4657 		err = got_error_from_errno("strdup");
4658 		goto done;
4659 	}
4660 
4661 	committer_time = got_object_commit_get_committer_time(commit);
4662 	if (gmtime_r(&committer_time, &tm) == NULL)
4663 		return got_error_from_errno("gmtime_r");
4664 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
4665 	    &tm) == 0) {
4666 		err = got_error(GOT_ERR_NO_SPACE);
4667 		goto done;
4668 	}
4669 	bline->annotated = 1;
4670 
4671 	/* Print lines annotated so far. */
4672 	bline = &a->lines[a->lineno_cur - 1];
4673 	if (!bline->annotated)
4674 		goto done;
4675 
4676 	offset = a->line_offsets[a->lineno_cur - 1];
4677 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
4678 		err = got_error_from_errno("fseeko");
4679 		goto done;
4680 	}
4681 
4682 	while (bline->annotated) {
4683 		char *smallerthan, *at, *nl, *committer;
4684 		size_t len;
4685 
4686 		if (getline(&line, &linesize, a->f) == -1) {
4687 			if (ferror(a->f))
4688 				err = got_error_from_errno("getline");
4689 			break;
4690 		}
4691 
4692 		committer = bline->committer;
4693 		smallerthan = strchr(committer, '<');
4694 		if (smallerthan && smallerthan[1] != '\0')
4695 			committer = smallerthan + 1;
4696 		at = strchr(committer, '@');
4697 		if (at)
4698 			*at = '\0';
4699 		len = strlen(committer);
4700 		if (len >= 9)
4701 			committer[8] = '\0';
4702 
4703 		nl = strchr(line, '\n');
4704 		if (nl)
4705 			*nl = '\0';
4706 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
4707 		    bline->id_str, bline->datebuf, committer, line);
4708 
4709 		a->lineno_cur++;
4710 		bline = &a->lines[a->lineno_cur - 1];
4711 	}
4712 done:
4713 	if (commit)
4714 		got_object_commit_close(commit);
4715 	free(line);
4716 	return err;
4717 }
4718 
4719 static const struct got_error *
4720 cmd_blame(int argc, char *argv[])
4721 {
4722 	const struct got_error *error;
4723 	struct got_repository *repo = NULL;
4724 	struct got_worktree *worktree = NULL;
4725 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
4726 	char *link_target = NULL;
4727 	struct got_object_id *obj_id = NULL;
4728 	struct got_object_id *commit_id = NULL;
4729 	struct got_blob_object *blob = NULL;
4730 	char *commit_id_str = NULL;
4731 	struct blame_cb_args bca;
4732 	int ch, obj_type, i;
4733 	off_t filesize;
4734 
4735 	memset(&bca, 0, sizeof(bca));
4736 
4737 #ifndef PROFILE
4738 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4739 	    NULL) == -1)
4740 		err(1, "pledge");
4741 #endif
4742 
4743 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
4744 		switch (ch) {
4745 		case 'c':
4746 			commit_id_str = optarg;
4747 			break;
4748 		case 'r':
4749 			repo_path = realpath(optarg, NULL);
4750 			if (repo_path == NULL)
4751 				return got_error_from_errno2("realpath",
4752 				    optarg);
4753 			got_path_strip_trailing_slashes(repo_path);
4754 			break;
4755 		default:
4756 			usage_blame();
4757 			/* NOTREACHED */
4758 		}
4759 	}
4760 
4761 	argc -= optind;
4762 	argv += optind;
4763 
4764 	if (argc == 1)
4765 		path = argv[0];
4766 	else
4767 		usage_blame();
4768 
4769 	cwd = getcwd(NULL, 0);
4770 	if (cwd == NULL) {
4771 		error = got_error_from_errno("getcwd");
4772 		goto done;
4773 	}
4774 	if (repo_path == NULL) {
4775 		error = got_worktree_open(&worktree, cwd);
4776 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4777 			goto done;
4778 		else
4779 			error = NULL;
4780 		if (worktree) {
4781 			repo_path =
4782 			    strdup(got_worktree_get_repo_path(worktree));
4783 			if (repo_path == NULL) {
4784 				error = got_error_from_errno("strdup");
4785 				if (error)
4786 					goto done;
4787 			}
4788 		} else {
4789 			repo_path = strdup(cwd);
4790 			if (repo_path == NULL) {
4791 				error = got_error_from_errno("strdup");
4792 				goto done;
4793 			}
4794 		}
4795 	}
4796 
4797 	error = got_repo_open(&repo, repo_path, NULL);
4798 	if (error != NULL)
4799 		goto done;
4800 
4801 	if (worktree) {
4802 		const char *prefix = got_worktree_get_path_prefix(worktree);
4803 		char *p;
4804 
4805 		error = got_worktree_resolve_path(&p, worktree, path);
4806 		if (error)
4807 			goto done;
4808 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
4809 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
4810 		    p) == -1) {
4811 			error = got_error_from_errno("asprintf");
4812 			free(p);
4813 			goto done;
4814 		}
4815 		free(p);
4816 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
4817 	} else {
4818 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
4819 		if (error)
4820 			goto done;
4821 		error = got_repo_map_path(&in_repo_path, repo, path);
4822 	}
4823 	if (error)
4824 		goto done;
4825 
4826 	if (commit_id_str == NULL) {
4827 		struct got_reference *head_ref;
4828 		error = got_ref_open(&head_ref, repo, worktree ?
4829 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
4830 		if (error != NULL)
4831 			goto done;
4832 		error = got_ref_resolve(&commit_id, repo, head_ref);
4833 		got_ref_close(head_ref);
4834 		if (error != NULL)
4835 			goto done;
4836 	} else {
4837 		struct got_reflist_head refs;
4838 		TAILQ_INIT(&refs);
4839 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
4840 		    NULL);
4841 		if (error)
4842 			goto done;
4843 		error = got_repo_match_object_id(&commit_id, NULL,
4844 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4845 		got_ref_list_free(&refs);
4846 		if (error)
4847 			goto done;
4848 	}
4849 
4850 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
4851 	    commit_id, repo);
4852 	if (error)
4853 		goto done;
4854 
4855 	error = got_object_id_by_path(&obj_id, repo, commit_id,
4856 	    link_target ? link_target : in_repo_path);
4857 	if (error)
4858 		goto done;
4859 
4860 	error = got_object_get_type(&obj_type, repo, obj_id);
4861 	if (error)
4862 		goto done;
4863 
4864 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
4865 		error = got_error_path(link_target ? link_target : in_repo_path,
4866 		    GOT_ERR_OBJ_TYPE);
4867 		goto done;
4868 	}
4869 
4870 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192);
4871 	if (error)
4872 		goto done;
4873 	bca.f = got_opentemp();
4874 	if (bca.f == NULL) {
4875 		error = got_error_from_errno("got_opentemp");
4876 		goto done;
4877 	}
4878 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
4879 	    &bca.line_offsets, bca.f, blob);
4880 	if (error || bca.nlines == 0)
4881 		goto done;
4882 
4883 	/* Don't include \n at EOF in the blame line count. */
4884 	if (bca.line_offsets[bca.nlines - 1] == filesize)
4885 		bca.nlines--;
4886 
4887 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
4888 	if (bca.lines == NULL) {
4889 		error = got_error_from_errno("calloc");
4890 		goto done;
4891 	}
4892 	bca.lineno_cur = 1;
4893 	bca.nlines_prec = 0;
4894 	i = bca.nlines;
4895 	while (i > 0) {
4896 		i /= 10;
4897 		bca.nlines_prec++;
4898 	}
4899 	bca.repo = repo;
4900 
4901 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
4902 	    repo, blame_cb, &bca, check_cancelled, NULL);
4903 done:
4904 	free(in_repo_path);
4905 	free(link_target);
4906 	free(repo_path);
4907 	free(cwd);
4908 	free(commit_id);
4909 	free(obj_id);
4910 	if (blob)
4911 		got_object_blob_close(blob);
4912 	if (worktree)
4913 		got_worktree_close(worktree);
4914 	if (repo) {
4915 		const struct got_error *close_err = got_repo_close(repo);
4916 		if (error == NULL)
4917 			error = close_err;
4918 	}
4919 	if (bca.lines) {
4920 		for (i = 0; i < bca.nlines; i++) {
4921 			struct blame_line *bline = &bca.lines[i];
4922 			free(bline->id_str);
4923 			free(bline->committer);
4924 		}
4925 		free(bca.lines);
4926 	}
4927 	free(bca.line_offsets);
4928 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
4929 		error = got_error_from_errno("fclose");
4930 	return error;
4931 }
4932 
4933 __dead static void
4934 usage_tree(void)
4935 {
4936 	fprintf(stderr,
4937 	    "usage: %s tree [-c commit] [-r repository-path] [-iR] [path]\n",
4938 	    getprogname());
4939 	exit(1);
4940 }
4941 
4942 static const struct got_error *
4943 print_entry(struct got_tree_entry *te, const char *id, const char *path,
4944     const char *root_path, struct got_repository *repo)
4945 {
4946 	const struct got_error *err = NULL;
4947 	int is_root_path = (strcmp(path, root_path) == 0);
4948 	const char *modestr = "";
4949 	mode_t mode = got_tree_entry_get_mode(te);
4950 	char *link_target = NULL;
4951 
4952 	path += strlen(root_path);
4953 	while (path[0] == '/')
4954 		path++;
4955 
4956 	if (got_object_tree_entry_is_submodule(te))
4957 		modestr = "$";
4958 	else if (S_ISLNK(mode)) {
4959 		int i;
4960 
4961 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
4962 		if (err)
4963 			return err;
4964 		for (i = 0; i < strlen(link_target); i++) {
4965 			if (!isprint((unsigned char)link_target[i]))
4966 				link_target[i] = '?';
4967 		}
4968 
4969 		modestr = "@";
4970 	}
4971 	else if (S_ISDIR(mode))
4972 		modestr = "/";
4973 	else if (mode & S_IXUSR)
4974 		modestr = "*";
4975 
4976 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
4977 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
4978 	    link_target ? " -> ": "", link_target ? link_target : "");
4979 
4980 	free(link_target);
4981 	return NULL;
4982 }
4983 
4984 static const struct got_error *
4985 print_tree(const char *path, struct got_object_id *commit_id,
4986     int show_ids, int recurse, const char *root_path,
4987     struct got_repository *repo)
4988 {
4989 	const struct got_error *err = NULL;
4990 	struct got_object_id *tree_id = NULL;
4991 	struct got_tree_object *tree = NULL;
4992 	int nentries, i;
4993 
4994 	err = got_object_id_by_path(&tree_id, repo, commit_id, path);
4995 	if (err)
4996 		goto done;
4997 
4998 	err = got_object_open_as_tree(&tree, repo, tree_id);
4999 	if (err)
5000 		goto done;
5001 	nentries = got_object_tree_get_nentries(tree);
5002 	for (i = 0; i < nentries; i++) {
5003 		struct got_tree_entry *te;
5004 		char *id = NULL;
5005 
5006 		if (sigint_received || sigpipe_received)
5007 			break;
5008 
5009 		te = got_object_tree_get_entry(tree, i);
5010 		if (show_ids) {
5011 			char *id_str;
5012 			err = got_object_id_str(&id_str,
5013 			    got_tree_entry_get_id(te));
5014 			if (err)
5015 				goto done;
5016 			if (asprintf(&id, "%s ", id_str) == -1) {
5017 				err = got_error_from_errno("asprintf");
5018 				free(id_str);
5019 				goto done;
5020 			}
5021 			free(id_str);
5022 		}
5023 		err = print_entry(te, id, path, root_path, repo);
5024 		free(id);
5025 		if (err)
5026 			goto done;
5027 
5028 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5029 			char *child_path;
5030 			if (asprintf(&child_path, "%s%s%s", path,
5031 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5032 			    got_tree_entry_get_name(te)) == -1) {
5033 				err = got_error_from_errno("asprintf");
5034 				goto done;
5035 			}
5036 			err = print_tree(child_path, commit_id, show_ids, 1,
5037 			    root_path, repo);
5038 			free(child_path);
5039 			if (err)
5040 				goto done;
5041 		}
5042 	}
5043 done:
5044 	if (tree)
5045 		got_object_tree_close(tree);
5046 	free(tree_id);
5047 	return err;
5048 }
5049 
5050 static const struct got_error *
5051 cmd_tree(int argc, char *argv[])
5052 {
5053 	const struct got_error *error;
5054 	struct got_repository *repo = NULL;
5055 	struct got_worktree *worktree = NULL;
5056 	const char *path, *refname = NULL;
5057 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5058 	struct got_object_id *commit_id = NULL;
5059 	char *commit_id_str = NULL;
5060 	int show_ids = 0, recurse = 0;
5061 	int ch;
5062 
5063 #ifndef PROFILE
5064 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5065 	    NULL) == -1)
5066 		err(1, "pledge");
5067 #endif
5068 
5069 	while ((ch = getopt(argc, argv, "c:r:iR")) != -1) {
5070 		switch (ch) {
5071 		case 'c':
5072 			commit_id_str = optarg;
5073 			break;
5074 		case 'r':
5075 			repo_path = realpath(optarg, NULL);
5076 			if (repo_path == NULL)
5077 				return got_error_from_errno2("realpath",
5078 				    optarg);
5079 			got_path_strip_trailing_slashes(repo_path);
5080 			break;
5081 		case 'i':
5082 			show_ids = 1;
5083 			break;
5084 		case 'R':
5085 			recurse = 1;
5086 			break;
5087 		default:
5088 			usage_tree();
5089 			/* NOTREACHED */
5090 		}
5091 	}
5092 
5093 	argc -= optind;
5094 	argv += optind;
5095 
5096 	if (argc == 1)
5097 		path = argv[0];
5098 	else if (argc > 1)
5099 		usage_tree();
5100 	else
5101 		path = NULL;
5102 
5103 	cwd = getcwd(NULL, 0);
5104 	if (cwd == NULL) {
5105 		error = got_error_from_errno("getcwd");
5106 		goto done;
5107 	}
5108 	if (repo_path == NULL) {
5109 		error = got_worktree_open(&worktree, cwd);
5110 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5111 			goto done;
5112 		else
5113 			error = NULL;
5114 		if (worktree) {
5115 			repo_path =
5116 			    strdup(got_worktree_get_repo_path(worktree));
5117 			if (repo_path == NULL)
5118 				error = got_error_from_errno("strdup");
5119 			if (error)
5120 				goto done;
5121 		} else {
5122 			repo_path = strdup(cwd);
5123 			if (repo_path == NULL) {
5124 				error = got_error_from_errno("strdup");
5125 				goto done;
5126 			}
5127 		}
5128 	}
5129 
5130 	error = got_repo_open(&repo, repo_path, NULL);
5131 	if (error != NULL)
5132 		goto done;
5133 
5134 	if (worktree) {
5135 		const char *prefix = got_worktree_get_path_prefix(worktree);
5136 		char *p;
5137 
5138 		if (path == NULL)
5139 			path = "";
5140 		error = got_worktree_resolve_path(&p, worktree, path);
5141 		if (error)
5142 			goto done;
5143 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5144 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5145 		    p) == -1) {
5146 			error = got_error_from_errno("asprintf");
5147 			free(p);
5148 			goto done;
5149 		}
5150 		free(p);
5151 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5152 		if (error)
5153 			goto done;
5154 	} else {
5155 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5156 		if (error)
5157 			goto done;
5158 		if (path == NULL)
5159 			path = "/";
5160 		error = got_repo_map_path(&in_repo_path, repo, path);
5161 		if (error != NULL)
5162 			goto done;
5163 	}
5164 
5165 	if (commit_id_str == NULL) {
5166 		struct got_reference *head_ref;
5167 		if (worktree)
5168 			refname = got_worktree_get_head_ref_name(worktree);
5169 		else
5170 			refname = GOT_REF_HEAD;
5171 		error = got_ref_open(&head_ref, repo, refname, 0);
5172 		if (error != NULL)
5173 			goto done;
5174 		error = got_ref_resolve(&commit_id, repo, head_ref);
5175 		got_ref_close(head_ref);
5176 		if (error != NULL)
5177 			goto done;
5178 	} else {
5179 		struct got_reflist_head refs;
5180 		TAILQ_INIT(&refs);
5181 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5182 		    NULL);
5183 		if (error)
5184 			goto done;
5185 		error = got_repo_match_object_id(&commit_id, NULL,
5186 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5187 		got_ref_list_free(&refs);
5188 		if (error)
5189 			goto done;
5190 	}
5191 
5192 	error = print_tree(in_repo_path, commit_id, show_ids, recurse,
5193 	    in_repo_path, repo);
5194 done:
5195 	free(in_repo_path);
5196 	free(repo_path);
5197 	free(cwd);
5198 	free(commit_id);
5199 	if (worktree)
5200 		got_worktree_close(worktree);
5201 	if (repo) {
5202 		const struct got_error *close_err = got_repo_close(repo);
5203 		if (error == NULL)
5204 			error = close_err;
5205 	}
5206 	return error;
5207 }
5208 
5209 __dead static void
5210 usage_status(void)
5211 {
5212 	fprintf(stderr, "usage: %s status [-I] [-s status-codes ] [path ...]\n",
5213 	    getprogname());
5214 	exit(1);
5215 }
5216 
5217 static const struct got_error *
5218 print_status(void *arg, unsigned char status, unsigned char staged_status,
5219     const char *path, struct got_object_id *blob_id,
5220     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
5221     int dirfd, const char *de_name)
5222 {
5223 	if (status == staged_status && (status == GOT_STATUS_DELETE))
5224 		status = GOT_STATUS_NO_CHANGE;
5225 	if (arg) {
5226 		char *status_codes = arg;
5227 		size_t ncodes = strlen(status_codes);
5228 		int i;
5229 		for (i = 0; i < ncodes ; i++) {
5230 			if (status == status_codes[i] ||
5231 			    staged_status == status_codes[i])
5232 				break;
5233 		}
5234 		if (i == ncodes)
5235 			return NULL;
5236 	}
5237 	printf("%c%c %s\n", status, staged_status, path);
5238 	return NULL;
5239 }
5240 
5241 static const struct got_error *
5242 cmd_status(int argc, char *argv[])
5243 {
5244 	const struct got_error *error = NULL;
5245 	struct got_repository *repo = NULL;
5246 	struct got_worktree *worktree = NULL;
5247 	char *cwd = NULL, *status_codes = NULL;;
5248 	struct got_pathlist_head paths;
5249 	struct got_pathlist_entry *pe;
5250 	int ch, i, no_ignores = 0;
5251 
5252 	TAILQ_INIT(&paths);
5253 
5254 	while ((ch = getopt(argc, argv, "Is:")) != -1) {
5255 		switch (ch) {
5256 		case 'I':
5257 			no_ignores = 1;
5258 			break;
5259 		case 's':
5260 			for (i = 0; i < strlen(optarg); i++) {
5261 				switch (optarg[i]) {
5262 				case GOT_STATUS_MODIFY:
5263 				case GOT_STATUS_ADD:
5264 				case GOT_STATUS_DELETE:
5265 				case GOT_STATUS_CONFLICT:
5266 				case GOT_STATUS_MISSING:
5267 				case GOT_STATUS_OBSTRUCTED:
5268 				case GOT_STATUS_UNVERSIONED:
5269 				case GOT_STATUS_MODE_CHANGE:
5270 				case GOT_STATUS_NONEXISTENT:
5271 					break;
5272 				default:
5273 					errx(1, "invalid status code '%c'",
5274 					    optarg[i]);
5275 				}
5276 			}
5277 			status_codes = optarg;
5278 			break;
5279 		default:
5280 			usage_status();
5281 			/* NOTREACHED */
5282 		}
5283 	}
5284 
5285 	argc -= optind;
5286 	argv += optind;
5287 
5288 #ifndef PROFILE
5289 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5290 	    NULL) == -1)
5291 		err(1, "pledge");
5292 #endif
5293 	cwd = getcwd(NULL, 0);
5294 	if (cwd == NULL) {
5295 		error = got_error_from_errno("getcwd");
5296 		goto done;
5297 	}
5298 
5299 	error = got_worktree_open(&worktree, cwd);
5300 	if (error) {
5301 		if (error->code == GOT_ERR_NOT_WORKTREE)
5302 			error = wrap_not_worktree_error(error, "status", cwd);
5303 		goto done;
5304 	}
5305 
5306 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
5307 	    NULL);
5308 	if (error != NULL)
5309 		goto done;
5310 
5311 	error = apply_unveil(got_repo_get_path(repo), 1,
5312 	    got_worktree_get_root_path(worktree));
5313 	if (error)
5314 		goto done;
5315 
5316 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
5317 	if (error)
5318 		goto done;
5319 
5320 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
5321 	    print_status, status_codes, check_cancelled, NULL);
5322 done:
5323 	TAILQ_FOREACH(pe, &paths, entry)
5324 		free((char *)pe->path);
5325 	got_pathlist_free(&paths);
5326 	free(cwd);
5327 	return error;
5328 }
5329 
5330 __dead static void
5331 usage_ref(void)
5332 {
5333 	fprintf(stderr,
5334 	    "usage: %s ref [-r repository] [-l] [-c object] [-s reference] "
5335 	        "[-d] [name]\n",
5336 	    getprogname());
5337 	exit(1);
5338 }
5339 
5340 static const struct got_error *
5341 list_refs(struct got_repository *repo, const char *refname)
5342 {
5343 	static const struct got_error *err = NULL;
5344 	struct got_reflist_head refs;
5345 	struct got_reflist_entry *re;
5346 
5347 	TAILQ_INIT(&refs);
5348 	err = got_ref_list(&refs, repo, refname, got_ref_cmp_by_name, NULL);
5349 	if (err)
5350 		return err;
5351 
5352 	TAILQ_FOREACH(re, &refs, entry) {
5353 		char *refstr;
5354 		refstr = got_ref_to_str(re->ref);
5355 		if (refstr == NULL)
5356 			return got_error_from_errno("got_ref_to_str");
5357 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
5358 		free(refstr);
5359 	}
5360 
5361 	got_ref_list_free(&refs);
5362 	return NULL;
5363 }
5364 
5365 static const struct got_error *
5366 delete_ref_by_name(struct got_repository *repo, const char *refname)
5367 {
5368 	const struct got_error *err;
5369 	struct got_reference *ref;
5370 
5371 	err = got_ref_open(&ref, repo, refname, 0);
5372 	if (err)
5373 		return err;
5374 
5375 	err = delete_ref(repo, ref);
5376 	got_ref_close(ref);
5377 	return err;
5378 }
5379 
5380 static const struct got_error *
5381 add_ref(struct got_repository *repo, const char *refname, const char *target)
5382 {
5383 	const struct got_error *err = NULL;
5384 	struct got_object_id *id;
5385 	struct got_reference *ref = NULL;
5386 
5387 	/*
5388 	 * Don't let the user create a reference name with a leading '-'.
5389 	 * While technically a valid reference name, this case is usually
5390 	 * an unintended typo.
5391 	 */
5392 	if (refname[0] == '-')
5393 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5394 
5395 	err = got_repo_match_object_id_prefix(&id, target, GOT_OBJ_TYPE_ANY,
5396 	    repo);
5397 	if (err) {
5398 		struct got_reference *target_ref;
5399 
5400 		if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
5401 			return err;
5402 		err = got_ref_open(&target_ref, repo, target, 0);
5403 		if (err)
5404 			return err;
5405 		err = got_ref_resolve(&id, repo, target_ref);
5406 		got_ref_close(target_ref);
5407 		if (err)
5408 			return err;
5409 	}
5410 
5411 	err = got_ref_alloc(&ref, refname, id);
5412 	if (err)
5413 		goto done;
5414 
5415 	err = got_ref_write(ref, repo);
5416 done:
5417 	if (ref)
5418 		got_ref_close(ref);
5419 	free(id);
5420 	return err;
5421 }
5422 
5423 static const struct got_error *
5424 add_symref(struct got_repository *repo, const char *refname, const char *target)
5425 {
5426 	const struct got_error *err = NULL;
5427 	struct got_reference *ref = NULL;
5428 	struct got_reference *target_ref = NULL;
5429 
5430 	/*
5431 	 * Don't let the user create a reference name with a leading '-'.
5432 	 * While technically a valid reference name, this case is usually
5433 	 * an unintended typo.
5434 	 */
5435 	if (refname[0] == '-')
5436 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5437 
5438 	err = got_ref_open(&target_ref, repo, target, 0);
5439 	if (err)
5440 		return err;
5441 
5442 	err = got_ref_alloc_symref(&ref, refname, target_ref);
5443 	if (err)
5444 		goto done;
5445 
5446 	err = got_ref_write(ref, repo);
5447 done:
5448 	if (target_ref)
5449 		got_ref_close(target_ref);
5450 	if (ref)
5451 		got_ref_close(ref);
5452 	return err;
5453 }
5454 
5455 static const struct got_error *
5456 cmd_ref(int argc, char *argv[])
5457 {
5458 	const struct got_error *error = NULL;
5459 	struct got_repository *repo = NULL;
5460 	struct got_worktree *worktree = NULL;
5461 	char *cwd = NULL, *repo_path = NULL;
5462 	int ch, do_list = 0, do_delete = 0;
5463 	const char *obj_arg = NULL, *symref_target= NULL;
5464 	char *refname = NULL;
5465 
5466 	while ((ch = getopt(argc, argv, "c:dr:ls:")) != -1) {
5467 		switch (ch) {
5468 		case 'c':
5469 			obj_arg = optarg;
5470 			break;
5471 		case 'd':
5472 			do_delete = 1;
5473 			break;
5474 		case 'r':
5475 			repo_path = realpath(optarg, NULL);
5476 			if (repo_path == NULL)
5477 				return got_error_from_errno2("realpath",
5478 				    optarg);
5479 			got_path_strip_trailing_slashes(repo_path);
5480 			break;
5481 		case 'l':
5482 			do_list = 1;
5483 			break;
5484 		case 's':
5485 			symref_target = optarg;
5486 			break;
5487 		default:
5488 			usage_ref();
5489 			/* NOTREACHED */
5490 		}
5491 	}
5492 
5493 	if (obj_arg && do_list)
5494 		option_conflict('c', 'l');
5495 	if (obj_arg && do_delete)
5496 		option_conflict('c', 'd');
5497 	if (obj_arg && symref_target)
5498 		option_conflict('c', 's');
5499 	if (symref_target && do_delete)
5500 		option_conflict('s', 'd');
5501 	if (symref_target && do_list)
5502 		option_conflict('s', 'l');
5503 	if (do_delete && do_list)
5504 		option_conflict('d', 'l');
5505 
5506 	argc -= optind;
5507 	argv += optind;
5508 
5509 	if (do_list) {
5510 		if (argc != 0 && argc != 1)
5511 			usage_ref();
5512 		if (argc == 1) {
5513 			refname = strdup(argv[0]);
5514 			if (refname == NULL) {
5515 				error = got_error_from_errno("strdup");
5516 				goto done;
5517 			}
5518 		}
5519 	} else {
5520 		if (argc != 1)
5521 			usage_ref();
5522 		refname = strdup(argv[0]);
5523 		if (refname == NULL) {
5524 			error = got_error_from_errno("strdup");
5525 			goto done;
5526 		}
5527 	}
5528 
5529 	if (refname)
5530 		got_path_strip_trailing_slashes(refname);
5531 
5532 #ifndef PROFILE
5533 	if (do_list) {
5534 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
5535 		    NULL) == -1)
5536 			err(1, "pledge");
5537 	} else {
5538 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
5539 		    "sendfd unveil", NULL) == -1)
5540 			err(1, "pledge");
5541 	}
5542 #endif
5543 	cwd = getcwd(NULL, 0);
5544 	if (cwd == NULL) {
5545 		error = got_error_from_errno("getcwd");
5546 		goto done;
5547 	}
5548 
5549 	if (repo_path == NULL) {
5550 		error = got_worktree_open(&worktree, cwd);
5551 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5552 			goto done;
5553 		else
5554 			error = NULL;
5555 		if (worktree) {
5556 			repo_path =
5557 			    strdup(got_worktree_get_repo_path(worktree));
5558 			if (repo_path == NULL)
5559 				error = got_error_from_errno("strdup");
5560 			if (error)
5561 				goto done;
5562 		} else {
5563 			repo_path = strdup(cwd);
5564 			if (repo_path == NULL) {
5565 				error = got_error_from_errno("strdup");
5566 				goto done;
5567 			}
5568 		}
5569 	}
5570 
5571 	error = got_repo_open(&repo, repo_path, NULL);
5572 	if (error != NULL)
5573 		goto done;
5574 
5575 	error = apply_unveil(got_repo_get_path(repo), do_list,
5576 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5577 	if (error)
5578 		goto done;
5579 
5580 	if (do_list)
5581 		error = list_refs(repo, refname);
5582 	else if (do_delete)
5583 		error = delete_ref_by_name(repo, refname);
5584 	else if (symref_target)
5585 		error = add_symref(repo, refname, symref_target);
5586 	else {
5587 		if (obj_arg == NULL)
5588 			usage_ref();
5589 		error = add_ref(repo, refname, obj_arg);
5590 	}
5591 done:
5592 	free(refname);
5593 	if (repo) {
5594 		const struct got_error *close_err = got_repo_close(repo);
5595 		if (error == NULL)
5596 			error = close_err;
5597 	}
5598 	if (worktree)
5599 		got_worktree_close(worktree);
5600 	free(cwd);
5601 	free(repo_path);
5602 	return error;
5603 }
5604 
5605 __dead static void
5606 usage_branch(void)
5607 {
5608 	fprintf(stderr,
5609 	    "usage: %s branch [-c commit] [-d] [-r repository] [-l] [-n] "
5610 	        "[name]\n", getprogname());
5611 	exit(1);
5612 }
5613 
5614 static const struct got_error *
5615 list_branch(struct got_repository *repo, struct got_worktree *worktree,
5616     struct got_reference *ref)
5617 {
5618 	const struct got_error *err = NULL;
5619 	const char *refname, *marker = "  ";
5620 	char *refstr;
5621 
5622 	refname = got_ref_get_name(ref);
5623 	if (worktree && strcmp(refname,
5624 	    got_worktree_get_head_ref_name(worktree)) == 0) {
5625 		struct got_object_id *id = NULL;
5626 
5627 		err = got_ref_resolve(&id, repo, ref);
5628 		if (err)
5629 			return err;
5630 		if (got_object_id_cmp(id,
5631 		    got_worktree_get_base_commit_id(worktree)) == 0)
5632 			marker = "* ";
5633 		else
5634 			marker = "~ ";
5635 		free(id);
5636 	}
5637 
5638 	if (strncmp(refname, "refs/heads/", 11) == 0)
5639 		refname += 11;
5640 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5641 		refname += 18;
5642 	if (strncmp(refname, "refs/remotes/", 13) == 0)
5643 		refname += 13;
5644 
5645 	refstr = got_ref_to_str(ref);
5646 	if (refstr == NULL)
5647 		return got_error_from_errno("got_ref_to_str");
5648 
5649 	printf("%s%s: %s\n", marker, refname, refstr);
5650 	free(refstr);
5651 	return NULL;
5652 }
5653 
5654 static const struct got_error *
5655 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
5656 {
5657 	const char *refname;
5658 
5659 	if (worktree == NULL)
5660 		return got_error(GOT_ERR_NOT_WORKTREE);
5661 
5662 	refname = got_worktree_get_head_ref_name(worktree);
5663 
5664 	if (strncmp(refname, "refs/heads/", 11) == 0)
5665 		refname += 11;
5666 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5667 		refname += 18;
5668 
5669 	printf("%s\n", refname);
5670 
5671 	return NULL;
5672 }
5673 
5674 static const struct got_error *
5675 list_branches(struct got_repository *repo, struct got_worktree *worktree)
5676 {
5677 	static const struct got_error *err = NULL;
5678 	struct got_reflist_head refs;
5679 	struct got_reflist_entry *re;
5680 	struct got_reference *temp_ref = NULL;
5681 	int rebase_in_progress, histedit_in_progress;
5682 
5683 	TAILQ_INIT(&refs);
5684 
5685 	if (worktree) {
5686 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
5687 		    worktree);
5688 		if (err)
5689 			return err;
5690 
5691 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
5692 		    worktree);
5693 		if (err)
5694 			return err;
5695 
5696 		if (rebase_in_progress || histedit_in_progress) {
5697 			err = got_ref_open(&temp_ref, repo,
5698 			    got_worktree_get_head_ref_name(worktree), 0);
5699 			if (err)
5700 				return err;
5701 			list_branch(repo, worktree, temp_ref);
5702 			got_ref_close(temp_ref);
5703 		}
5704 	}
5705 
5706 	err = got_ref_list(&refs, repo, "refs/heads",
5707 	    got_ref_cmp_by_name, NULL);
5708 	if (err)
5709 		return err;
5710 
5711 	TAILQ_FOREACH(re, &refs, entry)
5712 		list_branch(repo, worktree, re->ref);
5713 
5714 	got_ref_list_free(&refs);
5715 
5716 	err = got_ref_list(&refs, repo, "refs/remotes",
5717 	    got_ref_cmp_by_name, NULL);
5718 	if (err)
5719 		return err;
5720 
5721 	TAILQ_FOREACH(re, &refs, entry)
5722 		list_branch(repo, worktree, re->ref);
5723 
5724 	got_ref_list_free(&refs);
5725 
5726 	return NULL;
5727 }
5728 
5729 static const struct got_error *
5730 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
5731     const char *branch_name)
5732 {
5733 	const struct got_error *err = NULL;
5734 	struct got_reference *ref = NULL;
5735 	char *refname, *remote_refname = NULL;
5736 
5737 	if (strncmp(branch_name, "refs/", 5) == 0)
5738 		branch_name += 5;
5739 	if (strncmp(branch_name, "heads/", 6) == 0)
5740 		branch_name += 6;
5741 	else if (strncmp(branch_name, "remotes/", 8) == 0)
5742 		branch_name += 8;
5743 
5744 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
5745 		return got_error_from_errno("asprintf");
5746 
5747 	if (asprintf(&remote_refname, "refs/remotes/%s",
5748 	    branch_name) == -1) {
5749 		err = got_error_from_errno("asprintf");
5750 		goto done;
5751 	}
5752 
5753 	err = got_ref_open(&ref, repo, refname, 0);
5754 	if (err) {
5755 		const struct got_error *err2;
5756 		if (err->code != GOT_ERR_NOT_REF)
5757 			goto done;
5758 		/*
5759 		 * Keep 'err' intact such that if neither branch exists
5760 		 * we report "refs/heads" rather than "refs/remotes" in
5761 		 * our error message.
5762 		 */
5763 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
5764 		if (err2)
5765 			goto done;
5766 		err = NULL;
5767 	}
5768 
5769 	if (worktree &&
5770 	    strcmp(got_worktree_get_head_ref_name(worktree),
5771 	    got_ref_get_name(ref)) == 0) {
5772 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
5773 		    "will not delete this work tree's current branch");
5774 		goto done;
5775 	}
5776 
5777 	err = got_ref_delete(ref, repo);
5778 done:
5779 	if (ref)
5780 		got_ref_close(ref);
5781 	free(refname);
5782 	free(remote_refname);
5783 	return err;
5784 }
5785 
5786 static const struct got_error *
5787 add_branch(struct got_repository *repo, const char *branch_name,
5788     struct got_object_id *base_commit_id)
5789 {
5790 	const struct got_error *err = NULL;
5791 	struct got_reference *ref = NULL;
5792 	char *base_refname = NULL, *refname = NULL;
5793 
5794 	/*
5795 	 * Don't let the user create a branch name with a leading '-'.
5796 	 * While technically a valid reference name, this case is usually
5797 	 * an unintended typo.
5798 	 */
5799 	if (branch_name[0] == '-')
5800 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
5801 
5802 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
5803 		branch_name += 11;
5804 
5805 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
5806 		err = got_error_from_errno("asprintf");
5807 		goto done;
5808 	}
5809 
5810 	err = got_ref_open(&ref, repo, refname, 0);
5811 	if (err == NULL) {
5812 		err = got_error(GOT_ERR_BRANCH_EXISTS);
5813 		goto done;
5814 	} else if (err->code != GOT_ERR_NOT_REF)
5815 		goto done;
5816 
5817 	err = got_ref_alloc(&ref, refname, base_commit_id);
5818 	if (err)
5819 		goto done;
5820 
5821 	err = got_ref_write(ref, repo);
5822 done:
5823 	if (ref)
5824 		got_ref_close(ref);
5825 	free(base_refname);
5826 	free(refname);
5827 	return err;
5828 }
5829 
5830 static const struct got_error *
5831 cmd_branch(int argc, char *argv[])
5832 {
5833 	const struct got_error *error = NULL;
5834 	struct got_repository *repo = NULL;
5835 	struct got_worktree *worktree = NULL;
5836 	char *cwd = NULL, *repo_path = NULL;
5837 	int ch, do_list = 0, do_show = 0, do_update = 1;
5838 	const char *delref = NULL, *commit_id_arg = NULL;
5839 	struct got_reference *ref = NULL;
5840 	struct got_pathlist_head paths;
5841 	struct got_pathlist_entry *pe;
5842 	struct got_object_id *commit_id = NULL;
5843 	char *commit_id_str = NULL;
5844 
5845 	TAILQ_INIT(&paths);
5846 
5847 	while ((ch = getopt(argc, argv, "c:d:r:ln")) != -1) {
5848 		switch (ch) {
5849 		case 'c':
5850 			commit_id_arg = optarg;
5851 			break;
5852 		case 'd':
5853 			delref = optarg;
5854 			break;
5855 		case 'r':
5856 			repo_path = realpath(optarg, NULL);
5857 			if (repo_path == NULL)
5858 				return got_error_from_errno2("realpath",
5859 				    optarg);
5860 			got_path_strip_trailing_slashes(repo_path);
5861 			break;
5862 		case 'l':
5863 			do_list = 1;
5864 			break;
5865 		case 'n':
5866 			do_update = 0;
5867 			break;
5868 		default:
5869 			usage_branch();
5870 			/* NOTREACHED */
5871 		}
5872 	}
5873 
5874 	if (do_list && delref)
5875 		option_conflict('l', 'd');
5876 
5877 	argc -= optind;
5878 	argv += optind;
5879 
5880 	if (!do_list && !delref && argc == 0)
5881 		do_show = 1;
5882 
5883 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
5884 		errx(1, "-c option can only be used when creating a branch");
5885 
5886 	if (do_list || delref) {
5887 		if (argc > 0)
5888 			usage_branch();
5889 	} else if (!do_show && argc != 1)
5890 		usage_branch();
5891 
5892 #ifndef PROFILE
5893 	if (do_list || do_show) {
5894 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
5895 		    NULL) == -1)
5896 			err(1, "pledge");
5897 	} else {
5898 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
5899 		    "sendfd unveil", NULL) == -1)
5900 			err(1, "pledge");
5901 	}
5902 #endif
5903 	cwd = getcwd(NULL, 0);
5904 	if (cwd == NULL) {
5905 		error = got_error_from_errno("getcwd");
5906 		goto done;
5907 	}
5908 
5909 	if (repo_path == NULL) {
5910 		error = got_worktree_open(&worktree, cwd);
5911 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5912 			goto done;
5913 		else
5914 			error = NULL;
5915 		if (worktree) {
5916 			repo_path =
5917 			    strdup(got_worktree_get_repo_path(worktree));
5918 			if (repo_path == NULL)
5919 				error = got_error_from_errno("strdup");
5920 			if (error)
5921 				goto done;
5922 		} else {
5923 			repo_path = strdup(cwd);
5924 			if (repo_path == NULL) {
5925 				error = got_error_from_errno("strdup");
5926 				goto done;
5927 			}
5928 		}
5929 	}
5930 
5931 	error = got_repo_open(&repo, repo_path, NULL);
5932 	if (error != NULL)
5933 		goto done;
5934 
5935 	error = apply_unveil(got_repo_get_path(repo), do_list,
5936 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5937 	if (error)
5938 		goto done;
5939 
5940 	if (do_show)
5941 		error = show_current_branch(repo, worktree);
5942 	else if (do_list)
5943 		error = list_branches(repo, worktree);
5944 	else if (delref)
5945 		error = delete_branch(repo, worktree, delref);
5946 	else {
5947 		struct got_reflist_head refs;
5948 		TAILQ_INIT(&refs);
5949 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5950 		    NULL);
5951 		if (error)
5952 			goto done;
5953 		if (commit_id_arg == NULL)
5954 			commit_id_arg = worktree ?
5955 			    got_worktree_get_head_ref_name(worktree) :
5956 			    GOT_REF_HEAD;
5957 		error = got_repo_match_object_id(&commit_id, NULL,
5958 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5959 		got_ref_list_free(&refs);
5960 		if (error)
5961 			goto done;
5962 		error = add_branch(repo, argv[0], commit_id);
5963 		if (error)
5964 			goto done;
5965 		if (worktree && do_update) {
5966 			struct got_update_progress_arg upa;
5967 			char *branch_refname = NULL;
5968 
5969 			error = got_object_id_str(&commit_id_str, commit_id);
5970 			if (error)
5971 				goto done;
5972 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
5973 			    worktree);
5974 			if (error)
5975 				goto done;
5976 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
5977 			    == -1) {
5978 				error = got_error_from_errno("asprintf");
5979 				goto done;
5980 			}
5981 			error = got_ref_open(&ref, repo, branch_refname, 0);
5982 			free(branch_refname);
5983 			if (error)
5984 				goto done;
5985 			error = switch_head_ref(ref, commit_id, worktree,
5986 			    repo);
5987 			if (error)
5988 				goto done;
5989 			error = got_worktree_set_base_commit_id(worktree, repo,
5990 			    commit_id);
5991 			if (error)
5992 				goto done;
5993 			memset(&upa, 0, sizeof(upa));
5994 			error = got_worktree_checkout_files(worktree, &paths,
5995 			    repo, update_progress, &upa, check_cancelled,
5996 			    NULL);
5997 			if (error)
5998 				goto done;
5999 			if (upa.did_something)
6000 				printf("Updated to commit %s\n", commit_id_str);
6001 			print_update_progress_stats(&upa);
6002 		}
6003 	}
6004 done:
6005 	if (ref)
6006 		got_ref_close(ref);
6007 	if (repo) {
6008 		const struct got_error *close_err = got_repo_close(repo);
6009 		if (error == NULL)
6010 			error = close_err;
6011 	}
6012 	if (worktree)
6013 		got_worktree_close(worktree);
6014 	free(cwd);
6015 	free(repo_path);
6016 	free(commit_id);
6017 	free(commit_id_str);
6018 	TAILQ_FOREACH(pe, &paths, entry)
6019 		free((char *)pe->path);
6020 	got_pathlist_free(&paths);
6021 	return error;
6022 }
6023 
6024 
6025 __dead static void
6026 usage_tag(void)
6027 {
6028 	fprintf(stderr,
6029 	    "usage: %s tag [-c commit] [-r repository] [-l] "
6030 	        "[-m message] name\n", getprogname());
6031 	exit(1);
6032 }
6033 
6034 #if 0
6035 static const struct got_error *
6036 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
6037 {
6038 	const struct got_error *err = NULL;
6039 	struct got_reflist_entry *re, *se, *new;
6040 	struct got_object_id *re_id, *se_id;
6041 	struct got_tag_object *re_tag, *se_tag;
6042 	time_t re_time, se_time;
6043 
6044 	STAILQ_FOREACH(re, tags, entry) {
6045 		se = STAILQ_FIRST(sorted);
6046 		if (se == NULL) {
6047 			err = got_reflist_entry_dup(&new, re);
6048 			if (err)
6049 				return err;
6050 			STAILQ_INSERT_HEAD(sorted, new, entry);
6051 			continue;
6052 		} else {
6053 			err = got_ref_resolve(&re_id, repo, re->ref);
6054 			if (err)
6055 				break;
6056 			err = got_object_open_as_tag(&re_tag, repo, re_id);
6057 			free(re_id);
6058 			if (err)
6059 				break;
6060 			re_time = got_object_tag_get_tagger_time(re_tag);
6061 			got_object_tag_close(re_tag);
6062 		}
6063 
6064 		while (se) {
6065 			err = got_ref_resolve(&se_id, repo, re->ref);
6066 			if (err)
6067 				break;
6068 			err = got_object_open_as_tag(&se_tag, repo, se_id);
6069 			free(se_id);
6070 			if (err)
6071 				break;
6072 			se_time = got_object_tag_get_tagger_time(se_tag);
6073 			got_object_tag_close(se_tag);
6074 
6075 			if (se_time > re_time) {
6076 				err = got_reflist_entry_dup(&new, re);
6077 				if (err)
6078 					return err;
6079 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
6080 				break;
6081 			}
6082 			se = STAILQ_NEXT(se, entry);
6083 			continue;
6084 		}
6085 	}
6086 done:
6087 	return err;
6088 }
6089 #endif
6090 
6091 static const struct got_error *
6092 list_tags(struct got_repository *repo, struct got_worktree *worktree)
6093 {
6094 	static const struct got_error *err = NULL;
6095 	struct got_reflist_head refs;
6096 	struct got_reflist_entry *re;
6097 
6098 	TAILQ_INIT(&refs);
6099 
6100 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
6101 	if (err)
6102 		return err;
6103 
6104 	TAILQ_FOREACH(re, &refs, entry) {
6105 		const char *refname;
6106 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
6107 		char datebuf[26];
6108 		const char *tagger;
6109 		time_t tagger_time;
6110 		struct got_object_id *id;
6111 		struct got_tag_object *tag;
6112 		struct got_commit_object *commit = NULL;
6113 
6114 		refname = got_ref_get_name(re->ref);
6115 		if (strncmp(refname, "refs/tags/", 10) != 0)
6116 			continue;
6117 		refname += 10;
6118 		refstr = got_ref_to_str(re->ref);
6119 		if (refstr == NULL) {
6120 			err = got_error_from_errno("got_ref_to_str");
6121 			break;
6122 		}
6123 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
6124 		free(refstr);
6125 
6126 		err = got_ref_resolve(&id, repo, re->ref);
6127 		if (err)
6128 			break;
6129 		err = got_object_open_as_tag(&tag, repo, id);
6130 		if (err) {
6131 			if (err->code != GOT_ERR_OBJ_TYPE) {
6132 				free(id);
6133 				break;
6134 			}
6135 			/* "lightweight" tag */
6136 			err = got_object_open_as_commit(&commit, repo, id);
6137 			if (err) {
6138 				free(id);
6139 				break;
6140 			}
6141 			tagger = got_object_commit_get_committer(commit);
6142 			tagger_time =
6143 			    got_object_commit_get_committer_time(commit);
6144 			err = got_object_id_str(&id_str, id);
6145 			free(id);
6146 			if (err)
6147 				break;
6148 		} else {
6149 			free(id);
6150 			tagger = got_object_tag_get_tagger(tag);
6151 			tagger_time = got_object_tag_get_tagger_time(tag);
6152 			err = got_object_id_str(&id_str,
6153 			    got_object_tag_get_object_id(tag));
6154 			if (err)
6155 				break;
6156 		}
6157 		printf("from: %s\n", tagger);
6158 		datestr = get_datestr(&tagger_time, datebuf);
6159 		if (datestr)
6160 			printf("date: %s UTC\n", datestr);
6161 		if (commit)
6162 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
6163 		else {
6164 			switch (got_object_tag_get_object_type(tag)) {
6165 			case GOT_OBJ_TYPE_BLOB:
6166 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
6167 				    id_str);
6168 				break;
6169 			case GOT_OBJ_TYPE_TREE:
6170 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
6171 				    id_str);
6172 				break;
6173 			case GOT_OBJ_TYPE_COMMIT:
6174 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
6175 				    id_str);
6176 				break;
6177 			case GOT_OBJ_TYPE_TAG:
6178 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
6179 				    id_str);
6180 				break;
6181 			default:
6182 				break;
6183 			}
6184 		}
6185 		free(id_str);
6186 		if (commit) {
6187 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
6188 			if (err)
6189 				break;
6190 			got_object_commit_close(commit);
6191 		} else {
6192 			tagmsg0 = strdup(got_object_tag_get_message(tag));
6193 			got_object_tag_close(tag);
6194 			if (tagmsg0 == NULL) {
6195 				err = got_error_from_errno("strdup");
6196 				break;
6197 			}
6198 		}
6199 
6200 		tagmsg = tagmsg0;
6201 		do {
6202 			line = strsep(&tagmsg, "\n");
6203 			if (line)
6204 				printf(" %s\n", line);
6205 		} while (line);
6206 		free(tagmsg0);
6207 	}
6208 
6209 	got_ref_list_free(&refs);
6210 	return NULL;
6211 }
6212 
6213 static const struct got_error *
6214 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
6215     const char *tag_name, const char *repo_path)
6216 {
6217 	const struct got_error *err = NULL;
6218 	char *template = NULL, *initial_content = NULL;
6219 	char *editor = NULL;
6220 	int initial_content_len;
6221 	int fd = -1;
6222 
6223 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
6224 		err = got_error_from_errno("asprintf");
6225 		goto done;
6226 	}
6227 
6228 	initial_content_len = asprintf(&initial_content,
6229 	    "\n# tagging commit %s as %s\n",
6230 	    commit_id_str, tag_name);
6231 	if (initial_content_len == -1) {
6232 		err = got_error_from_errno("asprintf");
6233 		goto done;
6234 	}
6235 
6236 	err = got_opentemp_named_fd(tagmsg_path, &fd, template);
6237 	if (err)
6238 		goto done;
6239 
6240 	if (write(fd, initial_content, initial_content_len) == -1) {
6241 		err = got_error_from_errno2("write", *tagmsg_path);
6242 		goto done;
6243 	}
6244 
6245 	err = get_editor(&editor);
6246 	if (err)
6247 		goto done;
6248 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
6249 	    initial_content_len, 1);
6250 done:
6251 	free(initial_content);
6252 	free(template);
6253 	free(editor);
6254 
6255 	if (fd != -1 && close(fd) == -1 && err == NULL)
6256 		err = got_error_from_errno2("close", *tagmsg_path);
6257 
6258 	/* Editor is done; we can now apply unveil(2) */
6259 	if (err == NULL)
6260 		err = apply_unveil(repo_path, 0, NULL);
6261 	if (err) {
6262 		free(*tagmsg);
6263 		*tagmsg = NULL;
6264 	}
6265 	return err;
6266 }
6267 
6268 static const struct got_error *
6269 add_tag(struct got_repository *repo, struct got_worktree *worktree,
6270     const char *tag_name, const char *commit_arg, const char *tagmsg_arg)
6271 {
6272 	const struct got_error *err = NULL;
6273 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
6274 	char *label = NULL, *commit_id_str = NULL;
6275 	struct got_reference *ref = NULL;
6276 	char *refname = NULL, *tagmsg = NULL, *tagger = NULL;
6277 	char *tagmsg_path = NULL, *tag_id_str = NULL;
6278 	int preserve_tagmsg = 0;
6279 	struct got_reflist_head refs;
6280 
6281 	TAILQ_INIT(&refs);
6282 
6283 	/*
6284 	 * Don't let the user create a tag name with a leading '-'.
6285 	 * While technically a valid reference name, this case is usually
6286 	 * an unintended typo.
6287 	 */
6288 	if (tag_name[0] == '-')
6289 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
6290 
6291 	err = get_author(&tagger, repo, worktree);
6292 	if (err)
6293 		return err;
6294 
6295 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6296 	if (err)
6297 		goto done;
6298 
6299 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
6300 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
6301 	if (err)
6302 		goto done;
6303 
6304 	err = got_object_id_str(&commit_id_str, commit_id);
6305 	if (err)
6306 		goto done;
6307 
6308 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
6309 		refname = strdup(tag_name);
6310 		if (refname == NULL) {
6311 			err = got_error_from_errno("strdup");
6312 			goto done;
6313 		}
6314 		tag_name += 10;
6315 	} else if (asprintf(&refname, "refs/tags/%s", tag_name) == -1) {
6316 		err = got_error_from_errno("asprintf");
6317 		goto done;
6318 	}
6319 
6320 	err = got_ref_open(&ref, repo, refname, 0);
6321 	if (err == NULL) {
6322 		err = got_error(GOT_ERR_TAG_EXISTS);
6323 		goto done;
6324 	} else if (err->code != GOT_ERR_NOT_REF)
6325 		goto done;
6326 
6327 	if (tagmsg_arg == NULL) {
6328 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
6329 		    tag_name, got_repo_get_path(repo));
6330 		if (err) {
6331 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
6332 			    tagmsg_path != NULL)
6333 				preserve_tagmsg = 1;
6334 			goto done;
6335 		}
6336 	}
6337 
6338 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
6339 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, repo);
6340 	if (err) {
6341 		if (tagmsg_path)
6342 			preserve_tagmsg = 1;
6343 		goto done;
6344 	}
6345 
6346 	err = got_ref_alloc(&ref, refname, tag_id);
6347 	if (err) {
6348 		if (tagmsg_path)
6349 			preserve_tagmsg = 1;
6350 		goto done;
6351 	}
6352 
6353 	err = got_ref_write(ref, repo);
6354 	if (err) {
6355 		if (tagmsg_path)
6356 			preserve_tagmsg = 1;
6357 		goto done;
6358 	}
6359 
6360 	err = got_object_id_str(&tag_id_str, tag_id);
6361 	if (err) {
6362 		if (tagmsg_path)
6363 			preserve_tagmsg = 1;
6364 		goto done;
6365 	}
6366 	printf("Created tag %s\n", tag_id_str);
6367 done:
6368 	if (preserve_tagmsg) {
6369 		fprintf(stderr, "%s: tag message preserved in %s\n",
6370 		    getprogname(), tagmsg_path);
6371 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
6372 		err = got_error_from_errno2("unlink", tagmsg_path);
6373 	free(tag_id_str);
6374 	if (ref)
6375 		got_ref_close(ref);
6376 	free(commit_id);
6377 	free(commit_id_str);
6378 	free(refname);
6379 	free(tagmsg);
6380 	free(tagmsg_path);
6381 	free(tagger);
6382 	got_ref_list_free(&refs);
6383 	return err;
6384 }
6385 
6386 static const struct got_error *
6387 cmd_tag(int argc, char *argv[])
6388 {
6389 	const struct got_error *error = NULL;
6390 	struct got_repository *repo = NULL;
6391 	struct got_worktree *worktree = NULL;
6392 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
6393 	char *gitconfig_path = NULL;
6394 	const char *tag_name, *commit_id_arg = NULL, *tagmsg = NULL;
6395 	int ch, do_list = 0;
6396 
6397 	while ((ch = getopt(argc, argv, "c:m:r:l")) != -1) {
6398 		switch (ch) {
6399 		case 'c':
6400 			commit_id_arg = optarg;
6401 			break;
6402 		case 'm':
6403 			tagmsg = optarg;
6404 			break;
6405 		case 'r':
6406 			repo_path = realpath(optarg, NULL);
6407 			if (repo_path == NULL)
6408 				return got_error_from_errno2("realpath",
6409 				    optarg);
6410 			got_path_strip_trailing_slashes(repo_path);
6411 			break;
6412 		case 'l':
6413 			do_list = 1;
6414 			break;
6415 		default:
6416 			usage_tag();
6417 			/* NOTREACHED */
6418 		}
6419 	}
6420 
6421 	argc -= optind;
6422 	argv += optind;
6423 
6424 	if (do_list) {
6425 		if (commit_id_arg != NULL)
6426 			errx(1,
6427 			    "-c option can only be used when creating a tag");
6428 		if (tagmsg)
6429 			option_conflict('l', 'm');
6430 		if (argc > 0)
6431 			usage_tag();
6432 	} else if (argc != 1)
6433 		usage_tag();
6434 
6435 	tag_name = argv[0];
6436 
6437 #ifndef PROFILE
6438 	if (do_list) {
6439 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6440 		    NULL) == -1)
6441 			err(1, "pledge");
6442 	} else {
6443 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6444 		    "sendfd unveil", NULL) == -1)
6445 			err(1, "pledge");
6446 	}
6447 #endif
6448 	cwd = getcwd(NULL, 0);
6449 	if (cwd == NULL) {
6450 		error = got_error_from_errno("getcwd");
6451 		goto done;
6452 	}
6453 
6454 	if (repo_path == NULL) {
6455 		error = got_worktree_open(&worktree, cwd);
6456 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6457 			goto done;
6458 		else
6459 			error = NULL;
6460 		if (worktree) {
6461 			repo_path =
6462 			    strdup(got_worktree_get_repo_path(worktree));
6463 			if (repo_path == NULL)
6464 				error = got_error_from_errno("strdup");
6465 			if (error)
6466 				goto done;
6467 		} else {
6468 			repo_path = strdup(cwd);
6469 			if (repo_path == NULL) {
6470 				error = got_error_from_errno("strdup");
6471 				goto done;
6472 			}
6473 		}
6474 	}
6475 
6476 	if (do_list) {
6477 		error = got_repo_open(&repo, repo_path, NULL);
6478 		if (error != NULL)
6479 			goto done;
6480 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6481 		if (error)
6482 			goto done;
6483 		error = list_tags(repo, worktree);
6484 	} else {
6485 		error = get_gitconfig_path(&gitconfig_path);
6486 		if (error)
6487 			goto done;
6488 		error = got_repo_open(&repo, repo_path, gitconfig_path);
6489 		if (error != NULL)
6490 			goto done;
6491 
6492 		if (tagmsg) {
6493 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
6494 			if (error)
6495 				goto done;
6496 		}
6497 
6498 		if (commit_id_arg == NULL) {
6499 			struct got_reference *head_ref;
6500 			struct got_object_id *commit_id;
6501 			error = got_ref_open(&head_ref, repo,
6502 			    worktree ? got_worktree_get_head_ref_name(worktree)
6503 			    : GOT_REF_HEAD, 0);
6504 			if (error)
6505 				goto done;
6506 			error = got_ref_resolve(&commit_id, repo, head_ref);
6507 			got_ref_close(head_ref);
6508 			if (error)
6509 				goto done;
6510 			error = got_object_id_str(&commit_id_str, commit_id);
6511 			free(commit_id);
6512 			if (error)
6513 				goto done;
6514 		}
6515 
6516 		error = add_tag(repo, worktree, tag_name,
6517 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg);
6518 	}
6519 done:
6520 	if (repo) {
6521 		const struct got_error *close_err = got_repo_close(repo);
6522 		if (error == NULL)
6523 			error = close_err;
6524 	}
6525 	if (worktree)
6526 		got_worktree_close(worktree);
6527 	free(cwd);
6528 	free(repo_path);
6529 	free(gitconfig_path);
6530 	free(commit_id_str);
6531 	return error;
6532 }
6533 
6534 __dead static void
6535 usage_add(void)
6536 {
6537 	fprintf(stderr, "usage: %s add [-R] [-I] path ...\n",
6538 	    getprogname());
6539 	exit(1);
6540 }
6541 
6542 static const struct got_error *
6543 add_progress(void *arg, unsigned char status, const char *path)
6544 {
6545 	while (path[0] == '/')
6546 		path++;
6547 	printf("%c  %s\n", status, path);
6548 	return NULL;
6549 }
6550 
6551 static const struct got_error *
6552 cmd_add(int argc, char *argv[])
6553 {
6554 	const struct got_error *error = NULL;
6555 	struct got_repository *repo = NULL;
6556 	struct got_worktree *worktree = NULL;
6557 	char *cwd = NULL;
6558 	struct got_pathlist_head paths;
6559 	struct got_pathlist_entry *pe;
6560 	int ch, can_recurse = 0, no_ignores = 0;
6561 
6562 	TAILQ_INIT(&paths);
6563 
6564 	while ((ch = getopt(argc, argv, "IR")) != -1) {
6565 		switch (ch) {
6566 		case 'I':
6567 			no_ignores = 1;
6568 			break;
6569 		case 'R':
6570 			can_recurse = 1;
6571 			break;
6572 		default:
6573 			usage_add();
6574 			/* NOTREACHED */
6575 		}
6576 	}
6577 
6578 	argc -= optind;
6579 	argv += optind;
6580 
6581 #ifndef PROFILE
6582 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6583 	    NULL) == -1)
6584 		err(1, "pledge");
6585 #endif
6586 	if (argc < 1)
6587 		usage_add();
6588 
6589 	cwd = getcwd(NULL, 0);
6590 	if (cwd == NULL) {
6591 		error = got_error_from_errno("getcwd");
6592 		goto done;
6593 	}
6594 
6595 	error = got_worktree_open(&worktree, cwd);
6596 	if (error) {
6597 		if (error->code == GOT_ERR_NOT_WORKTREE)
6598 			error = wrap_not_worktree_error(error, "add", cwd);
6599 		goto done;
6600 	}
6601 
6602 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6603 	    NULL);
6604 	if (error != NULL)
6605 		goto done;
6606 
6607 	error = apply_unveil(got_repo_get_path(repo), 1,
6608 	    got_worktree_get_root_path(worktree));
6609 	if (error)
6610 		goto done;
6611 
6612 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6613 	if (error)
6614 		goto done;
6615 
6616 	if (!can_recurse) {
6617 		char *ondisk_path;
6618 		struct stat sb;
6619 		TAILQ_FOREACH(pe, &paths, entry) {
6620 			if (asprintf(&ondisk_path, "%s/%s",
6621 			    got_worktree_get_root_path(worktree),
6622 			    pe->path) == -1) {
6623 				error = got_error_from_errno("asprintf");
6624 				goto done;
6625 			}
6626 			if (lstat(ondisk_path, &sb) == -1) {
6627 				if (errno == ENOENT) {
6628 					free(ondisk_path);
6629 					continue;
6630 				}
6631 				error = got_error_from_errno2("lstat",
6632 				    ondisk_path);
6633 				free(ondisk_path);
6634 				goto done;
6635 			}
6636 			free(ondisk_path);
6637 			if (S_ISDIR(sb.st_mode)) {
6638 				error = got_error_msg(GOT_ERR_BAD_PATH,
6639 				    "adding directories requires -R option");
6640 				goto done;
6641 			}
6642 		}
6643 	}
6644 
6645 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
6646 	    NULL, repo, no_ignores);
6647 done:
6648 	if (repo) {
6649 		const struct got_error *close_err = got_repo_close(repo);
6650 		if (error == NULL)
6651 			error = close_err;
6652 	}
6653 	if (worktree)
6654 		got_worktree_close(worktree);
6655 	TAILQ_FOREACH(pe, &paths, entry)
6656 		free((char *)pe->path);
6657 	got_pathlist_free(&paths);
6658 	free(cwd);
6659 	return error;
6660 }
6661 
6662 __dead static void
6663 usage_remove(void)
6664 {
6665 	fprintf(stderr, "usage: %s remove [-f] [-k] [-R] [-s status-codes] "
6666 	    "path ...\n", getprogname());
6667 	exit(1);
6668 }
6669 
6670 static const struct got_error *
6671 print_remove_status(void *arg, unsigned char status,
6672     unsigned char staged_status, const char *path)
6673 {
6674 	while (path[0] == '/')
6675 		path++;
6676 	if (status == GOT_STATUS_NONEXISTENT)
6677 		return NULL;
6678 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6679 		status = GOT_STATUS_NO_CHANGE;
6680 	printf("%c%c %s\n", status, staged_status, path);
6681 	return NULL;
6682 }
6683 
6684 static const struct got_error *
6685 cmd_remove(int argc, char *argv[])
6686 {
6687 	const struct got_error *error = NULL;
6688 	struct got_worktree *worktree = NULL;
6689 	struct got_repository *repo = NULL;
6690 	const char *status_codes = NULL;
6691 	char *cwd = NULL;
6692 	struct got_pathlist_head paths;
6693 	struct got_pathlist_entry *pe;
6694 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
6695 
6696 	TAILQ_INIT(&paths);
6697 
6698 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
6699 		switch (ch) {
6700 		case 'f':
6701 			delete_local_mods = 1;
6702 			break;
6703 		case 'k':
6704 			keep_on_disk = 1;
6705 			break;
6706 		case 'R':
6707 			can_recurse = 1;
6708 			break;
6709 		case 's':
6710 			for (i = 0; i < strlen(optarg); i++) {
6711 				switch (optarg[i]) {
6712 				case GOT_STATUS_MODIFY:
6713 					delete_local_mods = 1;
6714 					break;
6715 				case GOT_STATUS_MISSING:
6716 					break;
6717 				default:
6718 					errx(1, "invalid status code '%c'",
6719 					    optarg[i]);
6720 				}
6721 			}
6722 			status_codes = optarg;
6723 			break;
6724 		default:
6725 			usage_remove();
6726 			/* NOTREACHED */
6727 		}
6728 	}
6729 
6730 	argc -= optind;
6731 	argv += optind;
6732 
6733 #ifndef PROFILE
6734 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6735 	    NULL) == -1)
6736 		err(1, "pledge");
6737 #endif
6738 	if (argc < 1)
6739 		usage_remove();
6740 
6741 	cwd = getcwd(NULL, 0);
6742 	if (cwd == NULL) {
6743 		error = got_error_from_errno("getcwd");
6744 		goto done;
6745 	}
6746 	error = got_worktree_open(&worktree, cwd);
6747 	if (error) {
6748 		if (error->code == GOT_ERR_NOT_WORKTREE)
6749 			error = wrap_not_worktree_error(error, "remove", cwd);
6750 		goto done;
6751 	}
6752 
6753 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6754 	    NULL);
6755 	if (error)
6756 		goto done;
6757 
6758 	error = apply_unveil(got_repo_get_path(repo), 1,
6759 	    got_worktree_get_root_path(worktree));
6760 	if (error)
6761 		goto done;
6762 
6763 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6764 	if (error)
6765 		goto done;
6766 
6767 	if (!can_recurse) {
6768 		char *ondisk_path;
6769 		struct stat sb;
6770 		TAILQ_FOREACH(pe, &paths, entry) {
6771 			if (asprintf(&ondisk_path, "%s/%s",
6772 			    got_worktree_get_root_path(worktree),
6773 			    pe->path) == -1) {
6774 				error = got_error_from_errno("asprintf");
6775 				goto done;
6776 			}
6777 			if (lstat(ondisk_path, &sb) == -1) {
6778 				if (errno == ENOENT) {
6779 					free(ondisk_path);
6780 					continue;
6781 				}
6782 				error = got_error_from_errno2("lstat",
6783 				    ondisk_path);
6784 				free(ondisk_path);
6785 				goto done;
6786 			}
6787 			free(ondisk_path);
6788 			if (S_ISDIR(sb.st_mode)) {
6789 				error = got_error_msg(GOT_ERR_BAD_PATH,
6790 				    "removing directories requires -R option");
6791 				goto done;
6792 			}
6793 		}
6794 	}
6795 
6796 	error = got_worktree_schedule_delete(worktree, &paths,
6797 	    delete_local_mods, status_codes, print_remove_status, NULL,
6798 	    repo, keep_on_disk);
6799 done:
6800 	if (repo) {
6801 		const struct got_error *close_err = got_repo_close(repo);
6802 		if (error == NULL)
6803 			error = close_err;
6804 	}
6805 	if (worktree)
6806 		got_worktree_close(worktree);
6807 	TAILQ_FOREACH(pe, &paths, entry)
6808 		free((char *)pe->path);
6809 	got_pathlist_free(&paths);
6810 	free(cwd);
6811 	return error;
6812 }
6813 
6814 __dead static void
6815 usage_revert(void)
6816 {
6817 	fprintf(stderr, "usage: %s revert [-p] [-F response-script] [-R] "
6818 	    "path ...\n", getprogname());
6819 	exit(1);
6820 }
6821 
6822 static const struct got_error *
6823 revert_progress(void *arg, unsigned char status, const char *path)
6824 {
6825 	if (status == GOT_STATUS_UNVERSIONED)
6826 		return NULL;
6827 
6828 	while (path[0] == '/')
6829 		path++;
6830 	printf("%c  %s\n", status, path);
6831 	return NULL;
6832 }
6833 
6834 struct choose_patch_arg {
6835 	FILE *patch_script_file;
6836 	const char *action;
6837 };
6838 
6839 static const struct got_error *
6840 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
6841     int nchanges, const char *action)
6842 {
6843 	char *line = NULL;
6844 	size_t linesize = 0;
6845 	ssize_t linelen;
6846 
6847 	switch (status) {
6848 	case GOT_STATUS_ADD:
6849 		printf("A  %s\n%s this addition? [y/n] ", path, action);
6850 		break;
6851 	case GOT_STATUS_DELETE:
6852 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
6853 		break;
6854 	case GOT_STATUS_MODIFY:
6855 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
6856 			return got_error_from_errno("fseek");
6857 		printf(GOT_COMMIT_SEP_STR);
6858 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
6859 			printf("%s", line);
6860 		if (ferror(patch_file))
6861 			return got_error_from_errno("getline");
6862 		printf(GOT_COMMIT_SEP_STR);
6863 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
6864 		    path, n, nchanges, action);
6865 		break;
6866 	default:
6867 		return got_error_path(path, GOT_ERR_FILE_STATUS);
6868 	}
6869 
6870 	return NULL;
6871 }
6872 
6873 static const struct got_error *
6874 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
6875     FILE *patch_file, int n, int nchanges)
6876 {
6877 	const struct got_error *err = NULL;
6878 	char *line = NULL;
6879 	size_t linesize = 0;
6880 	ssize_t linelen;
6881 	int resp = ' ';
6882 	struct choose_patch_arg *a = arg;
6883 
6884 	*choice = GOT_PATCH_CHOICE_NONE;
6885 
6886 	if (a->patch_script_file) {
6887 		char *nl;
6888 		err = show_change(status, path, patch_file, n, nchanges,
6889 		    a->action);
6890 		if (err)
6891 			return err;
6892 		linelen = getline(&line, &linesize, a->patch_script_file);
6893 		if (linelen == -1) {
6894 			if (ferror(a->patch_script_file))
6895 				return got_error_from_errno("getline");
6896 			return NULL;
6897 		}
6898 		nl = strchr(line, '\n');
6899 		if (nl)
6900 			*nl = '\0';
6901 		if (strcmp(line, "y") == 0) {
6902 			*choice = GOT_PATCH_CHOICE_YES;
6903 			printf("y\n");
6904 		} else if (strcmp(line, "n") == 0) {
6905 			*choice = GOT_PATCH_CHOICE_NO;
6906 			printf("n\n");
6907 		} else if (strcmp(line, "q") == 0 &&
6908 		    status == GOT_STATUS_MODIFY) {
6909 			*choice = GOT_PATCH_CHOICE_QUIT;
6910 			printf("q\n");
6911 		} else
6912 			printf("invalid response '%s'\n", line);
6913 		free(line);
6914 		return NULL;
6915 	}
6916 
6917 	while (resp != 'y' && resp != 'n' && resp != 'q') {
6918 		err = show_change(status, path, patch_file, n, nchanges,
6919 		    a->action);
6920 		if (err)
6921 			return err;
6922 		resp = getchar();
6923 		if (resp == '\n')
6924 			resp = getchar();
6925 		if (status == GOT_STATUS_MODIFY) {
6926 			if (resp != 'y' && resp != 'n' && resp != 'q') {
6927 				printf("invalid response '%c'\n", resp);
6928 				resp = ' ';
6929 			}
6930 		} else if (resp != 'y' && resp != 'n') {
6931 				printf("invalid response '%c'\n", resp);
6932 				resp = ' ';
6933 		}
6934 	}
6935 
6936 	if (resp == 'y')
6937 		*choice = GOT_PATCH_CHOICE_YES;
6938 	else if (resp == 'n')
6939 		*choice = GOT_PATCH_CHOICE_NO;
6940 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
6941 		*choice = GOT_PATCH_CHOICE_QUIT;
6942 
6943 	return NULL;
6944 }
6945 
6946 
6947 static const struct got_error *
6948 cmd_revert(int argc, char *argv[])
6949 {
6950 	const struct got_error *error = NULL;
6951 	struct got_worktree *worktree = NULL;
6952 	struct got_repository *repo = NULL;
6953 	char *cwd = NULL, *path = NULL;
6954 	struct got_pathlist_head paths;
6955 	struct got_pathlist_entry *pe;
6956 	int ch, can_recurse = 0, pflag = 0;
6957 	FILE *patch_script_file = NULL;
6958 	const char *patch_script_path = NULL;
6959 	struct choose_patch_arg cpa;
6960 
6961 	TAILQ_INIT(&paths);
6962 
6963 	while ((ch = getopt(argc, argv, "pF:R")) != -1) {
6964 		switch (ch) {
6965 		case 'p':
6966 			pflag = 1;
6967 			break;
6968 		case 'F':
6969 			patch_script_path = optarg;
6970 			break;
6971 		case 'R':
6972 			can_recurse = 1;
6973 			break;
6974 		default:
6975 			usage_revert();
6976 			/* NOTREACHED */
6977 		}
6978 	}
6979 
6980 	argc -= optind;
6981 	argv += optind;
6982 
6983 #ifndef PROFILE
6984 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
6985 	    "unveil", NULL) == -1)
6986 		err(1, "pledge");
6987 #endif
6988 	if (argc < 1)
6989 		usage_revert();
6990 	if (patch_script_path && !pflag)
6991 		errx(1, "-F option can only be used together with -p option");
6992 
6993 	cwd = getcwd(NULL, 0);
6994 	if (cwd == NULL) {
6995 		error = got_error_from_errno("getcwd");
6996 		goto done;
6997 	}
6998 	error = got_worktree_open(&worktree, cwd);
6999 	if (error) {
7000 		if (error->code == GOT_ERR_NOT_WORKTREE)
7001 			error = wrap_not_worktree_error(error, "revert", cwd);
7002 		goto done;
7003 	}
7004 
7005 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7006 	    NULL);
7007 	if (error != NULL)
7008 		goto done;
7009 
7010 	if (patch_script_path) {
7011 		patch_script_file = fopen(patch_script_path, "r");
7012 		if (patch_script_file == NULL) {
7013 			error = got_error_from_errno2("fopen",
7014 			    patch_script_path);
7015 			goto done;
7016 		}
7017 	}
7018 	error = apply_unveil(got_repo_get_path(repo), 1,
7019 	    got_worktree_get_root_path(worktree));
7020 	if (error)
7021 		goto done;
7022 
7023 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7024 	if (error)
7025 		goto done;
7026 
7027 	if (!can_recurse) {
7028 		char *ondisk_path;
7029 		struct stat sb;
7030 		TAILQ_FOREACH(pe, &paths, entry) {
7031 			if (asprintf(&ondisk_path, "%s/%s",
7032 			    got_worktree_get_root_path(worktree),
7033 			    pe->path) == -1) {
7034 				error = got_error_from_errno("asprintf");
7035 				goto done;
7036 			}
7037 			if (lstat(ondisk_path, &sb) == -1) {
7038 				if (errno == ENOENT) {
7039 					free(ondisk_path);
7040 					continue;
7041 				}
7042 				error = got_error_from_errno2("lstat",
7043 				    ondisk_path);
7044 				free(ondisk_path);
7045 				goto done;
7046 			}
7047 			free(ondisk_path);
7048 			if (S_ISDIR(sb.st_mode)) {
7049 				error = got_error_msg(GOT_ERR_BAD_PATH,
7050 				    "reverting directories requires -R option");
7051 				goto done;
7052 			}
7053 		}
7054 	}
7055 
7056 	cpa.patch_script_file = patch_script_file;
7057 	cpa.action = "revert";
7058 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
7059 	    pflag ? choose_patch : NULL, &cpa, repo);
7060 done:
7061 	if (patch_script_file && fclose(patch_script_file) == EOF &&
7062 	    error == NULL)
7063 		error = got_error_from_errno2("fclose", patch_script_path);
7064 	if (repo) {
7065 		const struct got_error *close_err = got_repo_close(repo);
7066 		if (error == NULL)
7067 			error = close_err;
7068 	}
7069 	if (worktree)
7070 		got_worktree_close(worktree);
7071 	free(path);
7072 	free(cwd);
7073 	return error;
7074 }
7075 
7076 __dead static void
7077 usage_commit(void)
7078 {
7079 	fprintf(stderr, "usage: %s commit [-F path] [-m msg] [-N] [-S] "
7080 	    "[path ...]\n", getprogname());
7081 	exit(1);
7082 }
7083 
7084 struct collect_commit_logmsg_arg {
7085 	const char *cmdline_log;
7086 	const char *prepared_log;
7087 	int non_interactive;
7088 	const char *editor;
7089 	const char *worktree_path;
7090 	const char *branch_name;
7091 	const char *repo_path;
7092 	char *logmsg_path;
7093 
7094 };
7095 
7096 static const struct got_error *
7097 read_prepared_logmsg(char **logmsg, const char *path)
7098 {
7099 	const struct got_error *err = NULL;
7100 	FILE *f = NULL;
7101 	struct stat sb;
7102 	size_t r;
7103 
7104 	*logmsg = NULL;
7105 	memset(&sb, 0, sizeof(sb));
7106 
7107 	f = fopen(path, "r");
7108 	if (f == NULL)
7109 		return got_error_from_errno2("fopen", path);
7110 
7111 	if (fstat(fileno(f), &sb) == -1) {
7112 		err = got_error_from_errno2("fstat", path);
7113 		goto done;
7114 	}
7115 	if (sb.st_size == 0) {
7116 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
7117 		goto done;
7118 	}
7119 
7120 	*logmsg = malloc(sb.st_size + 1);
7121 	if (*logmsg == NULL) {
7122 		err = got_error_from_errno("malloc");
7123 		goto done;
7124 	}
7125 
7126 	r = fread(*logmsg, 1, sb.st_size, f);
7127 	if (r != sb.st_size) {
7128 		if (ferror(f))
7129 			err = got_error_from_errno2("fread", path);
7130 		else
7131 			err = got_error(GOT_ERR_IO);
7132 		goto done;
7133 	}
7134 	(*logmsg)[sb.st_size] = '\0';
7135 done:
7136 	if (fclose(f) == EOF && err == NULL)
7137 		err = got_error_from_errno2("fclose", path);
7138 	if (err) {
7139 		free(*logmsg);
7140 		*logmsg = NULL;
7141 	}
7142 	return err;
7143 	
7144 }
7145 
7146 static const struct got_error *
7147 collect_commit_logmsg(struct got_pathlist_head *commitable_paths, char **logmsg,
7148     void *arg)
7149 {
7150 	char *initial_content = NULL;
7151 	struct got_pathlist_entry *pe;
7152 	const struct got_error *err = NULL;
7153 	char *template = NULL;
7154 	struct collect_commit_logmsg_arg *a = arg;
7155 	int initial_content_len;
7156 	int fd = -1;
7157 	size_t len;
7158 
7159 	/* if a message was specified on the command line, just use it */
7160 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
7161 		len = strlen(a->cmdline_log) + 1;
7162 		*logmsg = malloc(len + 1);
7163 		if (*logmsg == NULL)
7164 			return got_error_from_errno("malloc");
7165 		strlcpy(*logmsg, a->cmdline_log, len);
7166 		return NULL;
7167 	} else if (a->prepared_log != NULL && a->non_interactive)
7168 		return read_prepared_logmsg(logmsg, a->prepared_log);
7169 
7170 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
7171 		return got_error_from_errno("asprintf");
7172 
7173 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template);
7174 	if (err)
7175 		goto done;
7176 
7177 	if (a->prepared_log) {
7178 		char *msg;
7179 		err = read_prepared_logmsg(&msg, a->prepared_log);
7180 		if (err)
7181 			goto done;
7182 		if (write(fd, msg, strlen(msg)) == -1) {
7183 			err = got_error_from_errno2("write", a->logmsg_path);
7184 			free(msg);
7185 			goto done;
7186 		}
7187 		free(msg);
7188 	}
7189 
7190 	initial_content_len = asprintf(&initial_content,
7191 	    "\n# changes to be committed on branch %s:\n",
7192 	    a->branch_name);
7193 	if (initial_content_len == -1) {
7194 		err = got_error_from_errno("asprintf");
7195 		goto done;
7196 	}
7197 
7198 	if (write(fd, initial_content, initial_content_len) == -1) {
7199 		err = got_error_from_errno2("write", a->logmsg_path);
7200 		goto done;
7201 	}
7202 
7203 	TAILQ_FOREACH(pe, commitable_paths, entry) {
7204 		struct got_commitable *ct = pe->data;
7205 		dprintf(fd, "#  %c  %s\n",
7206 		    got_commitable_get_status(ct),
7207 		    got_commitable_get_path(ct));
7208 	}
7209 
7210 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
7211 	    initial_content_len, a->prepared_log ? 0 : 1);
7212 done:
7213 	free(initial_content);
7214 	free(template);
7215 
7216 	if (fd != -1 && close(fd) == -1 && err == NULL)
7217 		err = got_error_from_errno2("close", a->logmsg_path);
7218 
7219 	/* Editor is done; we can now apply unveil(2) */
7220 	if (err == NULL)
7221 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
7222 	if (err) {
7223 		free(*logmsg);
7224 		*logmsg = NULL;
7225 	}
7226 	return err;
7227 }
7228 
7229 static const struct got_error *
7230 cmd_commit(int argc, char *argv[])
7231 {
7232 	const struct got_error *error = NULL;
7233 	struct got_worktree *worktree = NULL;
7234 	struct got_repository *repo = NULL;
7235 	char *cwd = NULL, *id_str = NULL;
7236 	struct got_object_id *id = NULL;
7237 	const char *logmsg = NULL;
7238 	char *prepared_logmsg = NULL;
7239 	struct collect_commit_logmsg_arg cl_arg;
7240 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
7241 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
7242 	int allow_bad_symlinks = 0, non_interactive = 0;
7243 	struct got_pathlist_head paths;
7244 
7245 	TAILQ_INIT(&paths);
7246 	cl_arg.logmsg_path = NULL;
7247 
7248 	while ((ch = getopt(argc, argv, "F:m:NS")) != -1) {
7249 		switch (ch) {
7250 		case 'F':
7251 			if (logmsg != NULL)
7252 				option_conflict('F', 'm');
7253 			prepared_logmsg = realpath(optarg, NULL);
7254 			if (prepared_logmsg == NULL)
7255 				return got_error_from_errno2("realpath",
7256 				    optarg);
7257 			break;
7258 		case 'm':
7259 			if (prepared_logmsg)
7260 				option_conflict('m', 'F');
7261 			logmsg = optarg;
7262 			break;
7263 		case 'N':
7264 			non_interactive = 1;
7265 			break;
7266 		case 'S':
7267 			allow_bad_symlinks = 1;
7268 			break;
7269 		default:
7270 			usage_commit();
7271 			/* NOTREACHED */
7272 		}
7273 	}
7274 
7275 	argc -= optind;
7276 	argv += optind;
7277 
7278 #ifndef PROFILE
7279 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7280 	    "unveil", NULL) == -1)
7281 		err(1, "pledge");
7282 #endif
7283 	cwd = getcwd(NULL, 0);
7284 	if (cwd == NULL) {
7285 		error = got_error_from_errno("getcwd");
7286 		goto done;
7287 	}
7288 	error = got_worktree_open(&worktree, cwd);
7289 	if (error) {
7290 		if (error->code == GOT_ERR_NOT_WORKTREE)
7291 			error = wrap_not_worktree_error(error, "commit", cwd);
7292 		goto done;
7293 	}
7294 
7295 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
7296 	if (error)
7297 		goto done;
7298 	if (rebase_in_progress) {
7299 		error = got_error(GOT_ERR_REBASING);
7300 		goto done;
7301 	}
7302 
7303 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
7304 	    worktree);
7305 	if (error)
7306 		goto done;
7307 
7308 	error = get_gitconfig_path(&gitconfig_path);
7309 	if (error)
7310 		goto done;
7311 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7312 	    gitconfig_path);
7313 	if (error != NULL)
7314 		goto done;
7315 
7316 	error = get_author(&author, repo, worktree);
7317 	if (error)
7318 		return error;
7319 
7320 	/*
7321 	 * unveil(2) traverses exec(2); if an editor is used we have
7322 	 * to apply unveil after the log message has been written.
7323 	 */
7324 	if (logmsg == NULL || strlen(logmsg) == 0)
7325 		error = get_editor(&editor);
7326 	else
7327 		error = apply_unveil(got_repo_get_path(repo), 0,
7328 		    got_worktree_get_root_path(worktree));
7329 	if (error)
7330 		goto done;
7331 
7332 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7333 	if (error)
7334 		goto done;
7335 
7336 	cl_arg.editor = editor;
7337 	cl_arg.cmdline_log = logmsg;
7338 	cl_arg.prepared_log = prepared_logmsg;
7339 	cl_arg.non_interactive = non_interactive;
7340 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
7341 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
7342 	if (!histedit_in_progress) {
7343 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
7344 			error = got_error(GOT_ERR_COMMIT_BRANCH);
7345 			goto done;
7346 		}
7347 		cl_arg.branch_name += 11;
7348 	}
7349 	cl_arg.repo_path = got_repo_get_path(repo);
7350 	error = got_worktree_commit(&id, worktree, &paths, author, NULL,
7351 	    allow_bad_symlinks, collect_commit_logmsg, &cl_arg,
7352 	    print_status, NULL, repo);
7353 	if (error) {
7354 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7355 		    cl_arg.logmsg_path != NULL)
7356 			preserve_logmsg = 1;
7357 		goto done;
7358 	}
7359 
7360 	error = got_object_id_str(&id_str, id);
7361 	if (error)
7362 		goto done;
7363 	printf("Created commit %s\n", id_str);
7364 done:
7365 	if (preserve_logmsg) {
7366 		fprintf(stderr, "%s: log message preserved in %s\n",
7367 		    getprogname(), cl_arg.logmsg_path);
7368 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
7369 	    error == NULL)
7370 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
7371 	free(cl_arg.logmsg_path);
7372 	if (repo) {
7373 		const struct got_error *close_err = got_repo_close(repo);
7374 		if (error == NULL)
7375 			error = close_err;
7376 	}
7377 	if (worktree)
7378 		got_worktree_close(worktree);
7379 	free(cwd);
7380 	free(id_str);
7381 	free(gitconfig_path);
7382 	free(editor);
7383 	free(author);
7384 	free(prepared_logmsg);
7385 	return error;
7386 }
7387 
7388 __dead static void
7389 usage_send(void)
7390 {
7391 	fprintf(stderr, "usage: %s send [-a] [-b branch] [-d branch] [-f] "
7392 	    "[-r repository-path] [-t tag] [-T] [-q] [-v] "
7393 	    "[remote-repository]\n", getprogname());
7394 	exit(1);
7395 }
7396 
7397 struct got_send_progress_arg {
7398 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
7399 	int verbosity;
7400 	int last_ncommits;
7401 	int last_nobj_total;
7402 	int last_p_deltify;
7403 	int last_p_written;
7404 	int last_p_sent;
7405 	int printed_something;
7406 	int sent_something;
7407 	struct got_pathlist_head *delete_branches;
7408 };
7409 
7410 static const struct got_error *
7411 send_progress(void *arg, off_t packfile_size, int ncommits, int nobj_total,
7412     int nobj_deltify, int nobj_written, off_t bytes_sent, const char *refname,
7413     int success)
7414 {
7415 	struct got_send_progress_arg *a = arg;
7416 	char scaled_packsize[FMT_SCALED_STRSIZE];
7417 	char scaled_sent[FMT_SCALED_STRSIZE];
7418 	int p_deltify = 0, p_written = 0, p_sent = 0;
7419 	int print_searching = 0, print_total = 0;
7420 	int print_deltify = 0, print_written = 0, print_sent = 0;
7421 
7422 	if (a->verbosity < 0)
7423 		return NULL;
7424 
7425 	if (refname) {
7426 		const char *status = success ? "accepted" : "rejected";
7427 
7428 		if (success) {
7429 			struct got_pathlist_entry *pe;
7430 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
7431 				const char *branchname = pe->path;
7432 				if (got_path_cmp(branchname, refname,
7433 				    strlen(branchname), strlen(refname)) == 0) {
7434 					status = "deleted";
7435 					a->sent_something = 1;
7436 					break;
7437 				}
7438 			}
7439 		}
7440 
7441 		if (a->printed_something)
7442 			putchar('\n');
7443 		printf("Server has %s %s", status, refname);
7444 		a->printed_something = 1;
7445 		return NULL;
7446 	}
7447 
7448 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
7449 		return got_error_from_errno("fmt_scaled");
7450 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
7451 		return got_error_from_errno("fmt_scaled");
7452 
7453 	if (a->last_ncommits != ncommits) {
7454 		print_searching = 1;
7455 		a->last_ncommits = ncommits;
7456 	}
7457 
7458 	if (a->last_nobj_total != nobj_total) {
7459 		print_searching = 1;
7460 		print_total = 1;
7461 		a->last_nobj_total = nobj_total;
7462 	}
7463 
7464 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
7465 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
7466 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
7467 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
7468 			return got_error(GOT_ERR_NO_SPACE);
7469 	}
7470 
7471 	if (nobj_deltify > 0 || nobj_written > 0) {
7472 		if (nobj_deltify > 0) {
7473 			p_deltify = (nobj_deltify * 100) / nobj_total;
7474 			if (p_deltify != a->last_p_deltify) {
7475 				a->last_p_deltify = p_deltify;
7476 				print_searching = 1;
7477 				print_total = 1;
7478 				print_deltify = 1;
7479 			}
7480 		}
7481 		if (nobj_written > 0) {
7482 			p_written = (nobj_written * 100) / nobj_total;
7483 			if (p_written != a->last_p_written) {
7484 				a->last_p_written = p_written;
7485 				print_searching = 1;
7486 				print_total = 1;
7487 				print_deltify = 1;
7488 				print_written = 1;
7489 			}
7490 		}
7491 	}
7492 
7493 	if (bytes_sent > 0) {
7494 		p_sent = (bytes_sent * 100) / packfile_size;
7495 		if (p_sent != a->last_p_sent) {
7496 			a->last_p_sent = p_sent;
7497 			print_searching = 1;
7498 			print_total = 1;
7499 			print_deltify = 1;
7500 			print_written = 1;
7501 			print_sent = 1;
7502 		}
7503 		a->sent_something = 1;
7504 	}
7505 
7506 	if (print_searching || print_total || print_deltify || print_written ||
7507 	    print_sent)
7508 		printf("\r");
7509 	if (print_searching)
7510 		printf("packing %d reference%s", ncommits,
7511 		    ncommits == 1 ? "" : "s");
7512 	if (print_total)
7513 		printf("; %d object%s", nobj_total,
7514 		    nobj_total == 1 ? "" : "s");
7515 	if (print_deltify)
7516 		printf("; deltify: %d%%", p_deltify);
7517 	if (print_sent)
7518 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE,
7519 		    scaled_packsize, p_sent);
7520 	else if (print_written)
7521 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE,
7522 		    scaled_packsize, p_written);
7523 	if (print_searching || print_total || print_deltify ||
7524 	    print_written || print_sent) {
7525 		a->printed_something = 1;
7526 		fflush(stdout);
7527 	}
7528 	return NULL;
7529 }
7530 
7531 static const struct got_error *
7532 cmd_send(int argc, char *argv[])
7533 {
7534 	const struct got_error *error = NULL;
7535 	char *cwd = NULL, *repo_path = NULL;
7536 	const char *remote_name;
7537 	char *proto = NULL, *host = NULL, *port = NULL;
7538 	char *repo_name = NULL, *server_path = NULL;
7539 	const struct got_remote_repo *remotes, *remote = NULL;
7540 	int nremotes, nbranches = 0, ntags = 0, ndelete_branches = 0;
7541 	struct got_repository *repo = NULL;
7542 	struct got_worktree *worktree = NULL;
7543 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
7544 	struct got_pathlist_head branches;
7545 	struct got_pathlist_head tags;
7546 	struct got_reflist_head all_branches;
7547 	struct got_reflist_head all_tags;
7548 	struct got_pathlist_head delete_args;
7549 	struct got_pathlist_head delete_branches;
7550 	struct got_reflist_entry *re;
7551 	struct got_pathlist_entry *pe;
7552 	int i, ch, sendfd = -1, sendstatus;
7553 	pid_t sendpid = -1;
7554 	struct got_send_progress_arg spa;
7555 	int verbosity = 0, overwrite_refs = 0;
7556 	int send_all_branches = 0, send_all_tags = 0;
7557 	struct got_reference *ref = NULL;
7558 
7559 	TAILQ_INIT(&branches);
7560 	TAILQ_INIT(&tags);
7561 	TAILQ_INIT(&all_branches);
7562 	TAILQ_INIT(&all_tags);
7563 	TAILQ_INIT(&delete_args);
7564 	TAILQ_INIT(&delete_branches);
7565 
7566 	while ((ch = getopt(argc, argv, "ab:d:fr:t:Tvq")) != -1) {
7567 		switch (ch) {
7568 		case 'a':
7569 			send_all_branches = 1;
7570 			break;
7571 		case 'b':
7572 			error = got_pathlist_append(&branches, optarg, NULL);
7573 			if (error)
7574 				return error;
7575 			nbranches++;
7576 			break;
7577 		case 'd':
7578 			error = got_pathlist_append(&delete_args, optarg, NULL);
7579 			if (error)
7580 				return error;
7581 			break;
7582 		case 'f':
7583 			overwrite_refs = 1;
7584 			break;
7585 		case 'r':
7586 			repo_path = realpath(optarg, NULL);
7587 			if (repo_path == NULL)
7588 				return got_error_from_errno2("realpath",
7589 				    optarg);
7590 			got_path_strip_trailing_slashes(repo_path);
7591 			break;
7592 		case 't':
7593 			error = got_pathlist_append(&tags, optarg, NULL);
7594 			if (error)
7595 				return error;
7596 			ntags++;
7597 			break;
7598 		case 'T':
7599 			send_all_tags = 1;
7600 			break;
7601 		case 'v':
7602 			if (verbosity < 0)
7603 				verbosity = 0;
7604 			else if (verbosity < 3)
7605 				verbosity++;
7606 			break;
7607 		case 'q':
7608 			verbosity = -1;
7609 			break;
7610 		default:
7611 			usage_send();
7612 			/* NOTREACHED */
7613 		}
7614 	}
7615 	argc -= optind;
7616 	argv += optind;
7617 
7618 	if (send_all_branches && !TAILQ_EMPTY(&branches))
7619 		option_conflict('a', 'b');
7620 	if (send_all_tags && !TAILQ_EMPTY(&tags))
7621 		option_conflict('T', 't');
7622 
7623 
7624 	if (argc == 0)
7625 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
7626 	else if (argc == 1)
7627 		remote_name = argv[0];
7628 	else
7629 		usage_send();
7630 
7631 	cwd = getcwd(NULL, 0);
7632 	if (cwd == NULL) {
7633 		error = got_error_from_errno("getcwd");
7634 		goto done;
7635 	}
7636 
7637 	if (repo_path == NULL) {
7638 		error = got_worktree_open(&worktree, cwd);
7639 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7640 			goto done;
7641 		else
7642 			error = NULL;
7643 		if (worktree) {
7644 			repo_path =
7645 			    strdup(got_worktree_get_repo_path(worktree));
7646 			if (repo_path == NULL)
7647 				error = got_error_from_errno("strdup");
7648 			if (error)
7649 				goto done;
7650 		} else {
7651 			repo_path = strdup(cwd);
7652 			if (repo_path == NULL) {
7653 				error = got_error_from_errno("strdup");
7654 				goto done;
7655 			}
7656 		}
7657 	}
7658 
7659 	error = got_repo_open(&repo, repo_path, NULL);
7660 	if (error)
7661 		goto done;
7662 
7663 	if (worktree) {
7664 		worktree_conf = got_worktree_get_gotconfig(worktree);
7665 		if (worktree_conf) {
7666 			got_gotconfig_get_remotes(&nremotes, &remotes,
7667 			    worktree_conf);
7668 			for (i = 0; i < nremotes; i++) {
7669 				if (strcmp(remotes[i].name, remote_name) == 0) {
7670 					remote = &remotes[i];
7671 					break;
7672 				}
7673 			}
7674 		}
7675 	}
7676 	if (remote == NULL) {
7677 		repo_conf = got_repo_get_gotconfig(repo);
7678 		if (repo_conf) {
7679 			got_gotconfig_get_remotes(&nremotes, &remotes,
7680 			    repo_conf);
7681 			for (i = 0; i < nremotes; i++) {
7682 				if (strcmp(remotes[i].name, remote_name) == 0) {
7683 					remote = &remotes[i];
7684 					break;
7685 				}
7686 			}
7687 		}
7688 	}
7689 	if (remote == NULL) {
7690 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
7691 		for (i = 0; i < nremotes; i++) {
7692 			if (strcmp(remotes[i].name, remote_name) == 0) {
7693 				remote = &remotes[i];
7694 				break;
7695 			}
7696 		}
7697 	}
7698 	if (remote == NULL) {
7699 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
7700 		goto done;
7701 	}
7702 
7703 	error = got_fetch_parse_uri(&proto, &host, &port, &server_path,
7704 	    &repo_name, remote->send_url);
7705 	if (error)
7706 		goto done;
7707 
7708 	if (strcmp(proto, "git") == 0) {
7709 #ifndef PROFILE
7710 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7711 		    "sendfd dns inet unveil", NULL) == -1)
7712 			err(1, "pledge");
7713 #endif
7714 	} else if (strcmp(proto, "git+ssh") == 0 ||
7715 	    strcmp(proto, "ssh") == 0) {
7716 #ifndef PROFILE
7717 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7718 		    "sendfd unveil", NULL) == -1)
7719 			err(1, "pledge");
7720 #endif
7721 	} else if (strcmp(proto, "http") == 0 ||
7722 	    strcmp(proto, "git+http") == 0) {
7723 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
7724 		goto done;
7725 	} else {
7726 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
7727 		goto done;
7728 	}
7729 
7730 	if (strcmp(proto, "git+ssh") == 0 || strcmp(proto, "ssh") == 0) {
7731 		if (unveil(GOT_FETCH_PATH_SSH, "x") != 0) {
7732 			error = got_error_from_errno2("unveil",
7733 			    GOT_FETCH_PATH_SSH);
7734 			goto done;
7735 		}
7736 	}
7737 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7738 	if (error)
7739 		goto done;
7740 
7741 	if (send_all_branches) {
7742 		error = got_ref_list(&all_branches, repo, "refs/heads",
7743 		    got_ref_cmp_by_name, NULL);
7744 		if (error)
7745 			goto done;
7746 		TAILQ_FOREACH(re, &all_branches, entry) {
7747 			const char *branchname = got_ref_get_name(re->ref);
7748 			error = got_pathlist_append(&branches,
7749 			    branchname, NULL);
7750 			if (error)
7751 				goto done;
7752 			nbranches++;
7753 		}
7754 	} else if (nbranches == 0) {
7755 		for (i = 0; i < remote->nsend_branches; i++) {
7756 			got_pathlist_append(&branches,
7757 			    remote->send_branches[i], NULL);
7758 		}
7759 	}
7760 
7761 	if (send_all_tags) {
7762 		error = got_ref_list(&all_tags, repo, "refs/tags",
7763 		    got_ref_cmp_by_name, NULL);
7764 		if (error)
7765 			goto done;
7766 		TAILQ_FOREACH(re, &all_tags, entry) {
7767 			const char *tagname = got_ref_get_name(re->ref);
7768 			error = got_pathlist_append(&tags,
7769 			    tagname, NULL);
7770 			if (error)
7771 				goto done;
7772 			ntags++;
7773 		}
7774 	}
7775 
7776 	/*
7777 	 * To prevent accidents only branches in refs/heads/ can be deleted
7778 	 * with 'got send -d'.
7779 	 * Deleting anything else requires local repository access or Git.
7780 	 */
7781 	TAILQ_FOREACH(pe, &delete_args, entry) {
7782 		const char *branchname = pe->path;
7783 		char *s;
7784 		struct got_pathlist_entry *new;
7785 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
7786 			s = strdup(branchname);
7787 			if (s == NULL) {
7788 				error = got_error_from_errno("strdup");
7789 				goto done;
7790 			}
7791 		} else {
7792 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
7793 				error = got_error_from_errno("asprintf");
7794 				goto done;
7795 			}
7796 		}
7797 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
7798 		if (error || new == NULL /* duplicate */)
7799 			free(s);
7800 		if (error)
7801 			goto done;
7802 		ndelete_branches++;
7803 	}
7804 
7805 	if (nbranches == 0 && ndelete_branches == 0) {
7806 		struct got_reference *head_ref;
7807 		if (worktree)
7808 			error = got_ref_open(&head_ref, repo,
7809 			    got_worktree_get_head_ref_name(worktree), 0);
7810 		else
7811 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
7812 		if (error)
7813 			goto done;
7814 		if (got_ref_is_symbolic(head_ref)) {
7815 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
7816 			got_ref_close(head_ref);
7817 			if (error)
7818 				goto done;
7819 		} else
7820 			ref = head_ref;
7821 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
7822 		   NULL);
7823 		if (error)
7824 			goto done;
7825 		nbranches++;
7826 	}
7827 
7828 	if (verbosity >= 0)
7829 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
7830 		    port ? ":" : "", port ? port : "");
7831 
7832 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
7833 	    server_path, verbosity);
7834 	if (error)
7835 		goto done;
7836 
7837 	memset(&spa, 0, sizeof(spa));
7838 	spa.last_scaled_packsize[0] = '\0';
7839 	spa.last_p_deltify = -1;
7840 	spa.last_p_written = -1;
7841 	spa.verbosity = verbosity;
7842 	spa.delete_branches = &delete_branches;
7843 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
7844 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
7845 	    check_cancelled, NULL);
7846 	if (spa.printed_something)
7847 		putchar('\n');
7848 	if (error)
7849 		goto done;
7850 	if (!spa.sent_something && verbosity >= 0)
7851 		printf("Already up-to-date\n");
7852 done:
7853 	if (sendpid > 0) {
7854 		if (kill(sendpid, SIGTERM) == -1)
7855 			error = got_error_from_errno("kill");
7856 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
7857 			error = got_error_from_errno("waitpid");
7858 	}
7859 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
7860 		error = got_error_from_errno("close");
7861 	if (repo) {
7862 		const struct got_error *close_err = got_repo_close(repo);
7863 		if (error == NULL)
7864 			error = close_err;
7865 	}
7866 	if (worktree)
7867 		got_worktree_close(worktree);
7868 	if (ref)
7869 		got_ref_close(ref);
7870 	got_pathlist_free(&branches);
7871 	got_pathlist_free(&tags);
7872 	got_ref_list_free(&all_branches);
7873 	got_ref_list_free(&all_tags);
7874 	got_pathlist_free(&delete_args);
7875 	TAILQ_FOREACH(pe, &delete_branches, entry)
7876 		free((char *)pe->path);
7877 	got_pathlist_free(&delete_branches);
7878 	free(cwd);
7879 	free(repo_path);
7880 	free(proto);
7881 	free(host);
7882 	free(port);
7883 	free(server_path);
7884 	free(repo_name);
7885 	return error;
7886 }
7887 
7888 __dead static void
7889 usage_cherrypick(void)
7890 {
7891 	fprintf(stderr, "usage: %s cherrypick commit-id\n", getprogname());
7892 	exit(1);
7893 }
7894 
7895 static const struct got_error *
7896 cmd_cherrypick(int argc, char *argv[])
7897 {
7898 	const struct got_error *error = NULL;
7899 	struct got_worktree *worktree = NULL;
7900 	struct got_repository *repo = NULL;
7901 	char *cwd = NULL, *commit_id_str = NULL;
7902 	struct got_object_id *commit_id = NULL;
7903 	struct got_commit_object *commit = NULL;
7904 	struct got_object_qid *pid;
7905 	struct got_reference *head_ref = NULL;
7906 	int ch;
7907 	struct got_update_progress_arg upa;
7908 
7909 	while ((ch = getopt(argc, argv, "")) != -1) {
7910 		switch (ch) {
7911 		default:
7912 			usage_cherrypick();
7913 			/* NOTREACHED */
7914 		}
7915 	}
7916 
7917 	argc -= optind;
7918 	argv += optind;
7919 
7920 #ifndef PROFILE
7921 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7922 	    "unveil", NULL) == -1)
7923 		err(1, "pledge");
7924 #endif
7925 	if (argc != 1)
7926 		usage_cherrypick();
7927 
7928 	cwd = getcwd(NULL, 0);
7929 	if (cwd == NULL) {
7930 		error = got_error_from_errno("getcwd");
7931 		goto done;
7932 	}
7933 	error = got_worktree_open(&worktree, cwd);
7934 	if (error) {
7935 		if (error->code == GOT_ERR_NOT_WORKTREE)
7936 			error = wrap_not_worktree_error(error, "cherrypick",
7937 			    cwd);
7938 		goto done;
7939 	}
7940 
7941 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7942 	    NULL);
7943 	if (error != NULL)
7944 		goto done;
7945 
7946 	error = apply_unveil(got_repo_get_path(repo), 0,
7947 	    got_worktree_get_root_path(worktree));
7948 	if (error)
7949 		goto done;
7950 
7951 	error = got_repo_match_object_id_prefix(&commit_id, argv[0],
7952 	    GOT_OBJ_TYPE_COMMIT, repo);
7953 	if (error != NULL) {
7954 		struct got_reference *ref;
7955 		if (error->code != GOT_ERR_BAD_OBJ_ID_STR)
7956 			goto done;
7957 		error = got_ref_open(&ref, repo, argv[0], 0);
7958 		if (error != NULL)
7959 			goto done;
7960 		error = got_ref_resolve(&commit_id, repo, ref);
7961 		got_ref_close(ref);
7962 		if (error != NULL)
7963 			goto done;
7964 	}
7965 	error = got_object_id_str(&commit_id_str, commit_id);
7966 	if (error)
7967 		goto done;
7968 
7969 	error = got_ref_open(&head_ref, repo,
7970 	    got_worktree_get_head_ref_name(worktree), 0);
7971 	if (error != NULL)
7972 		goto done;
7973 
7974 	error = check_same_branch(commit_id, head_ref, NULL, repo);
7975 	if (error) {
7976 		if (error->code != GOT_ERR_ANCESTRY)
7977 			goto done;
7978 		error = NULL;
7979 	} else {
7980 		error = got_error(GOT_ERR_SAME_BRANCH);
7981 		goto done;
7982 	}
7983 
7984 	error = got_object_open_as_commit(&commit, repo, commit_id);
7985 	if (error)
7986 		goto done;
7987 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
7988 	memset(&upa, 0, sizeof(upa));
7989 	error = got_worktree_merge_files(worktree, pid ? pid->id : NULL,
7990 	    commit_id, repo, update_progress, &upa, check_cancelled,
7991 	    NULL);
7992 	if (error != NULL)
7993 		goto done;
7994 
7995 	if (upa.did_something)
7996 		printf("Merged commit %s\n", commit_id_str);
7997 	print_update_progress_stats(&upa);
7998 done:
7999 	if (commit)
8000 		got_object_commit_close(commit);
8001 	free(commit_id_str);
8002 	if (head_ref)
8003 		got_ref_close(head_ref);
8004 	if (worktree)
8005 		got_worktree_close(worktree);
8006 	if (repo) {
8007 		const struct got_error *close_err = got_repo_close(repo);
8008 		if (error == NULL)
8009 			error = close_err;
8010 	}
8011 	return error;
8012 }
8013 
8014 __dead static void
8015 usage_backout(void)
8016 {
8017 	fprintf(stderr, "usage: %s backout commit-id\n", getprogname());
8018 	exit(1);
8019 }
8020 
8021 static const struct got_error *
8022 cmd_backout(int argc, char *argv[])
8023 {
8024 	const struct got_error *error = NULL;
8025 	struct got_worktree *worktree = NULL;
8026 	struct got_repository *repo = NULL;
8027 	char *cwd = NULL, *commit_id_str = NULL;
8028 	struct got_object_id *commit_id = NULL;
8029 	struct got_commit_object *commit = NULL;
8030 	struct got_object_qid *pid;
8031 	struct got_reference *head_ref = NULL;
8032 	int ch;
8033 	struct got_update_progress_arg upa;
8034 
8035 	while ((ch = getopt(argc, argv, "")) != -1) {
8036 		switch (ch) {
8037 		default:
8038 			usage_backout();
8039 			/* NOTREACHED */
8040 		}
8041 	}
8042 
8043 	argc -= optind;
8044 	argv += optind;
8045 
8046 #ifndef PROFILE
8047 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8048 	    "unveil", NULL) == -1)
8049 		err(1, "pledge");
8050 #endif
8051 	if (argc != 1)
8052 		usage_backout();
8053 
8054 	cwd = getcwd(NULL, 0);
8055 	if (cwd == NULL) {
8056 		error = got_error_from_errno("getcwd");
8057 		goto done;
8058 	}
8059 	error = got_worktree_open(&worktree, cwd);
8060 	if (error) {
8061 		if (error->code == GOT_ERR_NOT_WORKTREE)
8062 			error = wrap_not_worktree_error(error, "backout", cwd);
8063 		goto done;
8064 	}
8065 
8066 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8067 	    NULL);
8068 	if (error != NULL)
8069 		goto done;
8070 
8071 	error = apply_unveil(got_repo_get_path(repo), 0,
8072 	    got_worktree_get_root_path(worktree));
8073 	if (error)
8074 		goto done;
8075 
8076 	error = got_repo_match_object_id_prefix(&commit_id, argv[0],
8077 	    GOT_OBJ_TYPE_COMMIT, repo);
8078 	if (error != NULL) {
8079 		struct got_reference *ref;
8080 		if (error->code != GOT_ERR_BAD_OBJ_ID_STR)
8081 			goto done;
8082 		error = got_ref_open(&ref, repo, argv[0], 0);
8083 		if (error != NULL)
8084 			goto done;
8085 		error = got_ref_resolve(&commit_id, repo, ref);
8086 		got_ref_close(ref);
8087 		if (error != NULL)
8088 			goto done;
8089 	}
8090 	error = got_object_id_str(&commit_id_str, commit_id);
8091 	if (error)
8092 		goto done;
8093 
8094 	error = got_ref_open(&head_ref, repo,
8095 	    got_worktree_get_head_ref_name(worktree), 0);
8096 	if (error != NULL)
8097 		goto done;
8098 
8099 	error = check_same_branch(commit_id, head_ref, NULL, repo);
8100 	if (error)
8101 		goto done;
8102 
8103 	error = got_object_open_as_commit(&commit, repo, commit_id);
8104 	if (error)
8105 		goto done;
8106 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8107 	if (pid == NULL) {
8108 		error = got_error(GOT_ERR_ROOT_COMMIT);
8109 		goto done;
8110 	}
8111 
8112 	memset(&upa, 0, sizeof(upa));
8113 	error = got_worktree_merge_files(worktree, commit_id, pid->id, repo,
8114 	    update_progress, &upa, check_cancelled, NULL);
8115 	if (error != NULL)
8116 		goto done;
8117 
8118 	if (upa.did_something)
8119 		printf("Backed out commit %s\n", commit_id_str);
8120 	print_update_progress_stats(&upa);
8121 done:
8122 	if (commit)
8123 		got_object_commit_close(commit);
8124 	free(commit_id_str);
8125 	if (head_ref)
8126 		got_ref_close(head_ref);
8127 	if (worktree)
8128 		got_worktree_close(worktree);
8129 	if (repo) {
8130 		const struct got_error *close_err = got_repo_close(repo);
8131 		if (error == NULL)
8132 			error = close_err;
8133 	}
8134 	return error;
8135 }
8136 
8137 __dead static void
8138 usage_rebase(void)
8139 {
8140 	fprintf(stderr, "usage: %s rebase [-a] [-c] [-l] [-X] [branch]\n",
8141 	    getprogname());
8142 	exit(1);
8143 }
8144 
8145 void
8146 trim_logmsg(char *logmsg, int limit)
8147 {
8148 	char *nl;
8149 	size_t len;
8150 
8151 	len = strlen(logmsg);
8152 	if (len > limit)
8153 		len = limit;
8154 	logmsg[len] = '\0';
8155 	nl = strchr(logmsg, '\n');
8156 	if (nl)
8157 		*nl = '\0';
8158 }
8159 
8160 static const struct got_error *
8161 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
8162 {
8163 	const struct got_error *err;
8164 	char *logmsg0 = NULL;
8165 	const char *s;
8166 
8167 	err = got_object_commit_get_logmsg(&logmsg0, commit);
8168 	if (err)
8169 		return err;
8170 
8171 	s = logmsg0;
8172 	while (isspace((unsigned char)s[0]))
8173 		s++;
8174 
8175 	*logmsg = strdup(s);
8176 	if (*logmsg == NULL) {
8177 		err = got_error_from_errno("strdup");
8178 		goto done;
8179 	}
8180 
8181 	trim_logmsg(*logmsg, limit);
8182 done:
8183 	free(logmsg0);
8184 	return err;
8185 }
8186 
8187 static const struct got_error *
8188 show_rebase_merge_conflict(struct got_object_id *id, struct got_repository *repo)
8189 {
8190 	const struct got_error *err;
8191 	struct got_commit_object *commit = NULL;
8192 	char *id_str = NULL, *logmsg = NULL;
8193 
8194 	err = got_object_open_as_commit(&commit, repo, id);
8195 	if (err)
8196 		return err;
8197 
8198 	err = got_object_id_str(&id_str, id);
8199 	if (err)
8200 		goto done;
8201 
8202 	id_str[12] = '\0';
8203 
8204 	err = get_short_logmsg(&logmsg, 42, commit);
8205 	if (err)
8206 		goto done;
8207 
8208 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
8209 done:
8210 	free(id_str);
8211 	got_object_commit_close(commit);
8212 	free(logmsg);
8213 	return err;
8214 }
8215 
8216 static const struct got_error *
8217 show_rebase_progress(struct got_commit_object *commit,
8218     struct got_object_id *old_id, struct got_object_id *new_id)
8219 {
8220 	const struct got_error *err;
8221 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
8222 
8223 	err = got_object_id_str(&old_id_str, old_id);
8224 	if (err)
8225 		goto done;
8226 
8227 	if (new_id) {
8228 		err = got_object_id_str(&new_id_str, new_id);
8229 		if (err)
8230 			goto done;
8231 	}
8232 
8233 	old_id_str[12] = '\0';
8234 	if (new_id_str)
8235 		new_id_str[12] = '\0';
8236 
8237 	err = get_short_logmsg(&logmsg, 42, commit);
8238 	if (err)
8239 		goto done;
8240 
8241 	printf("%s -> %s: %s\n", old_id_str,
8242 	    new_id_str ? new_id_str : "no-op change", logmsg);
8243 done:
8244 	free(old_id_str);
8245 	free(new_id_str);
8246 	free(logmsg);
8247 	return err;
8248 }
8249 
8250 static const struct got_error *
8251 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
8252     struct got_reference *branch, struct got_reference *new_base_branch,
8253     struct got_reference *tmp_branch, struct got_repository *repo,
8254     int create_backup)
8255 {
8256 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
8257 	return got_worktree_rebase_complete(worktree, fileindex,
8258 	    new_base_branch, tmp_branch, branch, repo, create_backup);
8259 }
8260 
8261 static const struct got_error *
8262 rebase_commit(struct got_pathlist_head *merged_paths,
8263     struct got_worktree *worktree, struct got_fileindex *fileindex,
8264     struct got_reference *tmp_branch,
8265     struct got_object_id *commit_id, struct got_repository *repo)
8266 {
8267 	const struct got_error *error;
8268 	struct got_commit_object *commit;
8269 	struct got_object_id *new_commit_id;
8270 
8271 	error = got_object_open_as_commit(&commit, repo, commit_id);
8272 	if (error)
8273 		return error;
8274 
8275 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
8276 	    worktree, fileindex, tmp_branch, commit, commit_id, repo);
8277 	if (error) {
8278 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
8279 			goto done;
8280 		error = show_rebase_progress(commit, commit_id, NULL);
8281 	} else {
8282 		error = show_rebase_progress(commit, commit_id, new_commit_id);
8283 		free(new_commit_id);
8284 	}
8285 done:
8286 	got_object_commit_close(commit);
8287 	return error;
8288 }
8289 
8290 struct check_path_prefix_arg {
8291 	const char *path_prefix;
8292 	size_t len;
8293 	int errcode;
8294 };
8295 
8296 static const struct got_error *
8297 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
8298     struct got_blob_object *blob2, struct got_object_id *id1,
8299     struct got_object_id *id2, const char *path1, const char *path2,
8300     mode_t mode1, mode_t mode2, struct got_repository *repo)
8301 {
8302 	struct check_path_prefix_arg *a = arg;
8303 
8304 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
8305 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
8306 		return got_error(a->errcode);
8307 
8308 	return NULL;
8309 }
8310 
8311 static const struct got_error *
8312 check_path_prefix(struct got_object_id *parent_id,
8313     struct got_object_id *commit_id, const char *path_prefix,
8314     int errcode, struct got_repository *repo)
8315 {
8316 	const struct got_error *err;
8317 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
8318 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
8319 	struct check_path_prefix_arg cpp_arg;
8320 
8321 	if (got_path_is_root_dir(path_prefix))
8322 		return NULL;
8323 
8324 	err = got_object_open_as_commit(&commit, repo, commit_id);
8325 	if (err)
8326 		goto done;
8327 
8328 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
8329 	if (err)
8330 		goto done;
8331 
8332 	err = got_object_open_as_tree(&tree1, repo,
8333 	    got_object_commit_get_tree_id(parent_commit));
8334 	if (err)
8335 		goto done;
8336 
8337 	err = got_object_open_as_tree(&tree2, repo,
8338 	    got_object_commit_get_tree_id(commit));
8339 	if (err)
8340 		goto done;
8341 
8342 	cpp_arg.path_prefix = path_prefix;
8343 	while (cpp_arg.path_prefix[0] == '/')
8344 		cpp_arg.path_prefix++;
8345 	cpp_arg.len = strlen(cpp_arg.path_prefix);
8346 	cpp_arg.errcode = errcode;
8347 	err = got_diff_tree(tree1, tree2, "", "", repo,
8348 	    check_path_prefix_in_diff, &cpp_arg, 0);
8349 done:
8350 	if (tree1)
8351 		got_object_tree_close(tree1);
8352 	if (tree2)
8353 		got_object_tree_close(tree2);
8354 	if (commit)
8355 		got_object_commit_close(commit);
8356 	if (parent_commit)
8357 		got_object_commit_close(parent_commit);
8358 	return err;
8359 }
8360 
8361 static const struct got_error *
8362 collect_commits(struct got_object_id_queue *commits,
8363     struct got_object_id *initial_commit_id,
8364     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
8365     const char *path_prefix, int path_prefix_errcode,
8366     struct got_repository *repo)
8367 {
8368 	const struct got_error *err = NULL;
8369 	struct got_commit_graph *graph = NULL;
8370 	struct got_object_id *parent_id = NULL;
8371 	struct got_object_qid *qid;
8372         struct got_object_id *commit_id = initial_commit_id;
8373 
8374 	err = got_commit_graph_open(&graph, "/", 1);
8375 	if (err)
8376 		return err;
8377 
8378 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
8379 	    check_cancelled, NULL);
8380 	if (err)
8381 		goto done;
8382 	while (got_object_id_cmp(commit_id, iter_stop_id) != 0) {
8383 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
8384 		    check_cancelled, NULL);
8385 		if (err) {
8386 			if (err->code == GOT_ERR_ITER_COMPLETED) {
8387 				err = got_error_msg(GOT_ERR_ANCESTRY,
8388 				    "ran out of commits to rebase before "
8389 				    "youngest common ancestor commit has "
8390 				    "been reached?!?");
8391 			}
8392 			goto done;
8393 		} else {
8394 			err = check_path_prefix(parent_id, commit_id,
8395 			    path_prefix, path_prefix_errcode, repo);
8396 			if (err)
8397 				goto done;
8398 
8399 			err = got_object_qid_alloc(&qid, commit_id);
8400 			if (err)
8401 				goto done;
8402 			STAILQ_INSERT_HEAD(commits, qid, entry);
8403 			commit_id = parent_id;
8404 		}
8405 	}
8406 done:
8407 	got_commit_graph_close(graph);
8408 	return err;
8409 }
8410 
8411 static const struct got_error *
8412 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
8413 {
8414 	const struct got_error *err = NULL;
8415 	time_t committer_time;
8416 	struct tm tm;
8417 	char datebuf[11]; /* YYYY-MM-DD + NUL */
8418 	char *author0 = NULL, *author, *smallerthan;
8419 	char *logmsg0 = NULL, *logmsg, *newline;
8420 
8421 	committer_time = got_object_commit_get_committer_time(commit);
8422 	if (gmtime_r(&committer_time, &tm) == NULL)
8423 		return got_error_from_errno("gmtime_r");
8424 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
8425 		return got_error(GOT_ERR_NO_SPACE);
8426 
8427 	author0 = strdup(got_object_commit_get_author(commit));
8428 	if (author0 == NULL)
8429 		return got_error_from_errno("strdup");
8430 	author = author0;
8431 	smallerthan = strchr(author, '<');
8432 	if (smallerthan && smallerthan[1] != '\0')
8433 		author = smallerthan + 1;
8434 	author[strcspn(author, "@>")] = '\0';
8435 
8436 	err = got_object_commit_get_logmsg(&logmsg0, commit);
8437 	if (err)
8438 		goto done;
8439 	logmsg = logmsg0;
8440 	while (*logmsg == '\n')
8441 		logmsg++;
8442 	newline = strchr(logmsg, '\n');
8443 	if (newline)
8444 		*newline = '\0';
8445 
8446 	if (asprintf(brief_str, "%s %s  %s",
8447 	    datebuf, author, logmsg) == -1)
8448 		err = got_error_from_errno("asprintf");
8449 done:
8450 	free(author0);
8451 	free(logmsg0);
8452 	return err;
8453 }
8454 
8455 static const struct got_error *
8456 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
8457     struct got_repository *repo)
8458 {
8459 	const struct got_error *err;
8460 	char *id_str;
8461 
8462 	err = got_object_id_str(&id_str, id);
8463 	if (err)
8464 		return err;
8465 
8466 	err = got_ref_delete(ref, repo);
8467 	if (err)
8468 		goto done;
8469 
8470 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
8471 done:
8472 	free(id_str);
8473 	return err;
8474 }
8475 
8476 static const struct got_error *
8477 print_backup_ref(const char *branch_name, const char *new_id_str,
8478     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
8479     struct got_reflist_object_id_map *refs_idmap,
8480     struct got_repository *repo)
8481 {
8482 	const struct got_error *err = NULL;
8483 	struct got_reflist_head *refs;
8484 	char *refs_str = NULL;
8485 	struct got_object_id *new_commit_id = NULL;
8486 	struct got_commit_object *new_commit = NULL;
8487 	char *new_commit_brief_str = NULL;
8488 	struct got_object_id *yca_id = NULL;
8489 	struct got_commit_object *yca_commit = NULL;
8490 	char *yca_id_str = NULL, *yca_brief_str = NULL;
8491 	char *custom_refs_str;
8492 
8493 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
8494 		return got_error_from_errno("asprintf");
8495 
8496 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL,
8497 	    0, 0, refs_idmap, custom_refs_str);
8498 	if (err)
8499 		goto done;
8500 
8501 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
8502 	if (err)
8503 		goto done;
8504 
8505 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
8506 	if (refs) {
8507 		err = build_refs_str(&refs_str, refs, new_commit_id, repo);
8508 		if (err)
8509 			goto done;
8510 	}
8511 
8512 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
8513 	if (err)
8514 		goto done;
8515 
8516 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
8517 	if (err)
8518 		goto done;
8519 
8520 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
8521 	    old_commit_id, new_commit_id, repo, check_cancelled, NULL);
8522 	if (err)
8523 		goto done;
8524 
8525 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
8526 	    refs_str ? " (" : "", refs_str ? refs_str : "",
8527 	    refs_str ? ")" : "", new_commit_brief_str);
8528 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
8529 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
8530 		free(refs_str);
8531 		refs_str = NULL;
8532 
8533 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
8534 		if (err)
8535 			goto done;
8536 
8537 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
8538 		if (err)
8539 			goto done;
8540 
8541 		err = got_object_id_str(&yca_id_str, yca_id);
8542 		if (err)
8543 			goto done;
8544 
8545 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
8546 		if (refs) {
8547 			err = build_refs_str(&refs_str, refs, yca_id, repo);
8548 			if (err)
8549 				goto done;
8550 		}
8551 		printf("history forked at %s%s%s%s\n %s\n",
8552 		    yca_id_str,
8553 		    refs_str ? " (" : "", refs_str ? refs_str : "",
8554 		    refs_str ? ")" : "", yca_brief_str);
8555 	}
8556 done:
8557 	free(custom_refs_str);
8558 	free(new_commit_id);
8559 	free(refs_str);
8560 	free(yca_id);
8561 	free(yca_id_str);
8562 	free(yca_brief_str);
8563 	if (new_commit)
8564 		got_object_commit_close(new_commit);
8565 	if (yca_commit)
8566 		got_object_commit_close(yca_commit);
8567 
8568 	return NULL;
8569 }
8570 
8571 static const struct got_error *
8572 process_backup_refs(const char *backup_ref_prefix, const char *wanted_branch_name,
8573     int delete, struct got_repository *repo)
8574 {
8575 	const struct got_error *err;
8576 	struct got_reflist_head refs, backup_refs;
8577 	struct got_reflist_entry *re;
8578 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
8579 	struct got_object_id *old_commit_id = NULL;
8580 	char *branch_name = NULL;
8581 	struct got_commit_object *old_commit = NULL;
8582 	struct got_reflist_object_id_map *refs_idmap = NULL;
8583 	int wanted_branch_found = 0;
8584 
8585 	TAILQ_INIT(&refs);
8586 	TAILQ_INIT(&backup_refs);
8587 
8588 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8589 	if (err)
8590 		return err;
8591 
8592 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
8593 	if (err)
8594 		goto done;
8595 
8596 	if (wanted_branch_name) {
8597 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
8598 			wanted_branch_name += 11;
8599 	}
8600 
8601 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
8602 	    got_ref_cmp_by_commit_timestamp_descending, repo);
8603 	if (err)
8604 		goto done;
8605 
8606 	TAILQ_FOREACH(re, &backup_refs, entry) {
8607 		const char *refname = got_ref_get_name(re->ref);
8608 		char *slash;
8609 
8610 		err = check_cancelled(NULL);
8611 		if (err)
8612 			break;
8613 
8614 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
8615 		if (err)
8616 			break;
8617 
8618 		err = got_object_open_as_commit(&old_commit, repo,
8619 		    old_commit_id);
8620 		if (err)
8621 			break;
8622 
8623 		if (strncmp(backup_ref_prefix, refname,
8624 		    backup_ref_prefix_len) == 0)
8625 			refname += backup_ref_prefix_len;
8626 
8627 		while (refname[0] == '/')
8628 			refname++;
8629 
8630 		branch_name = strdup(refname);
8631 		if (branch_name == NULL) {
8632 			err = got_error_from_errno("strdup");
8633 			break;
8634 		}
8635 		slash = strrchr(branch_name, '/');
8636 		if (slash) {
8637 			*slash = '\0';
8638 			refname += strlen(branch_name) + 1;
8639 		}
8640 
8641 		if (wanted_branch_name == NULL ||
8642 		    strcmp(wanted_branch_name, branch_name) == 0) {
8643 			wanted_branch_found = 1;
8644 			if (delete) {
8645 				err = delete_backup_ref(re->ref,
8646 				    old_commit_id, repo);
8647 			} else {
8648 				err = print_backup_ref(branch_name, refname,
8649 				   old_commit_id, old_commit, refs_idmap,
8650 				   repo);
8651 			}
8652 			if (err)
8653 				break;
8654 		}
8655 
8656 		free(old_commit_id);
8657 		old_commit_id = NULL;
8658 		free(branch_name);
8659 		branch_name = NULL;
8660 		got_object_commit_close(old_commit);
8661 		old_commit = NULL;
8662 	}
8663 
8664 	if (wanted_branch_name && !wanted_branch_found) {
8665 		err = got_error_fmt(GOT_ERR_NOT_REF,
8666 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
8667 	}
8668 done:
8669 	if (refs_idmap)
8670 		got_reflist_object_id_map_free(refs_idmap);
8671 	got_ref_list_free(&refs);
8672 	got_ref_list_free(&backup_refs);
8673 	free(old_commit_id);
8674 	free(branch_name);
8675 	if (old_commit)
8676 		got_object_commit_close(old_commit);
8677 	return err;
8678 }
8679 
8680 static const struct got_error *
8681 cmd_rebase(int argc, char *argv[])
8682 {
8683 	const struct got_error *error = NULL;
8684 	struct got_worktree *worktree = NULL;
8685 	struct got_repository *repo = NULL;
8686 	struct got_fileindex *fileindex = NULL;
8687 	char *cwd = NULL;
8688 	struct got_reference *branch = NULL;
8689 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
8690 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
8691 	struct got_object_id *resume_commit_id = NULL;
8692 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
8693 	struct got_commit_object *commit = NULL;
8694 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
8695 	int histedit_in_progress = 0, create_backup = 1, list_backups = 0;
8696 	int delete_backups = 0;
8697 	unsigned char rebase_status = GOT_STATUS_NO_CHANGE;
8698 	struct got_object_id_queue commits;
8699 	struct got_pathlist_head merged_paths;
8700 	const struct got_object_id_queue *parent_ids;
8701 	struct got_object_qid *qid, *pid;
8702 
8703 	STAILQ_INIT(&commits);
8704 	TAILQ_INIT(&merged_paths);
8705 
8706 	while ((ch = getopt(argc, argv, "aclX")) != -1) {
8707 		switch (ch) {
8708 		case 'a':
8709 			abort_rebase = 1;
8710 			break;
8711 		case 'c':
8712 			continue_rebase = 1;
8713 			break;
8714 		case 'l':
8715 			list_backups = 1;
8716 			break;
8717 		case 'X':
8718 			delete_backups = 1;
8719 			break;
8720 		default:
8721 			usage_rebase();
8722 			/* NOTREACHED */
8723 		}
8724 	}
8725 
8726 	argc -= optind;
8727 	argv += optind;
8728 
8729 #ifndef PROFILE
8730 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8731 	    "unveil", NULL) == -1)
8732 		err(1, "pledge");
8733 #endif
8734 	if (list_backups) {
8735 		if (abort_rebase)
8736 			option_conflict('l', 'a');
8737 		if (continue_rebase)
8738 			option_conflict('l', 'c');
8739 		if (delete_backups)
8740 			option_conflict('l', 'X');
8741 		if (argc != 0 && argc != 1)
8742 			usage_rebase();
8743 	} else if (delete_backups) {
8744 		if (abort_rebase)
8745 			option_conflict('X', 'a');
8746 		if (continue_rebase)
8747 			option_conflict('X', 'c');
8748 		if (list_backups)
8749 			option_conflict('l', 'X');
8750 		if (argc != 0 && argc != 1)
8751 			usage_rebase();
8752 	} else {
8753 		if (abort_rebase && continue_rebase)
8754 			usage_rebase();
8755 		else if (abort_rebase || continue_rebase) {
8756 			if (argc != 0)
8757 				usage_rebase();
8758 		} else if (argc != 1)
8759 			usage_rebase();
8760 	}
8761 
8762 	cwd = getcwd(NULL, 0);
8763 	if (cwd == NULL) {
8764 		error = got_error_from_errno("getcwd");
8765 		goto done;
8766 	}
8767 	error = got_worktree_open(&worktree, cwd);
8768 	if (error) {
8769 		if (list_backups || delete_backups) {
8770 			if (error->code != GOT_ERR_NOT_WORKTREE)
8771 				goto done;
8772 		} else {
8773 			if (error->code == GOT_ERR_NOT_WORKTREE)
8774 				error = wrap_not_worktree_error(error,
8775 				    "rebase", cwd);
8776 			goto done;
8777 		}
8778 	}
8779 
8780 	error = got_repo_open(&repo,
8781 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL);
8782 	if (error != NULL)
8783 		goto done;
8784 
8785 	error = apply_unveil(got_repo_get_path(repo), 0,
8786 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
8787 	if (error)
8788 		goto done;
8789 
8790 	if (list_backups || delete_backups) {
8791 		error = process_backup_refs(
8792 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
8793 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
8794 		goto done; /* nothing else to do */
8795 	}
8796 
8797 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
8798 	    worktree);
8799 	if (error)
8800 		goto done;
8801 	if (histedit_in_progress) {
8802 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
8803 		goto done;
8804 	}
8805 
8806 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
8807 	if (error)
8808 		goto done;
8809 
8810 	if (abort_rebase) {
8811 		struct got_update_progress_arg upa;
8812 		if (!rebase_in_progress) {
8813 			error = got_error(GOT_ERR_NOT_REBASING);
8814 			goto done;
8815 		}
8816 		error = got_worktree_rebase_continue(&resume_commit_id,
8817 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
8818 		    worktree, repo);
8819 		if (error)
8820 			goto done;
8821 		printf("Switching work tree to %s\n",
8822 		    got_ref_get_symref_target(new_base_branch));
8823 		memset(&upa, 0, sizeof(upa));
8824 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
8825 		    new_base_branch, update_progress, &upa);
8826 		if (error)
8827 			goto done;
8828 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
8829 		print_update_progress_stats(&upa);
8830 		goto done; /* nothing else to do */
8831 	}
8832 
8833 	if (continue_rebase) {
8834 		if (!rebase_in_progress) {
8835 			error = got_error(GOT_ERR_NOT_REBASING);
8836 			goto done;
8837 		}
8838 		error = got_worktree_rebase_continue(&resume_commit_id,
8839 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
8840 		    worktree, repo);
8841 		if (error)
8842 			goto done;
8843 
8844 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
8845 		    resume_commit_id, repo);
8846 		if (error)
8847 			goto done;
8848 
8849 		yca_id = got_object_id_dup(resume_commit_id);
8850 		if (yca_id == NULL) {
8851 			error = got_error_from_errno("got_object_id_dup");
8852 			goto done;
8853 		}
8854 	} else {
8855 		error = got_ref_open(&branch, repo, argv[0], 0);
8856 		if (error != NULL)
8857 			goto done;
8858 	}
8859 
8860 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
8861 	if (error)
8862 		goto done;
8863 
8864 	if (!continue_rebase) {
8865 		struct got_object_id *base_commit_id;
8866 
8867 		base_commit_id = got_worktree_get_base_commit_id(worktree);
8868 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
8869 		    base_commit_id, branch_head_commit_id, repo,
8870 		    check_cancelled, NULL);
8871 		if (error)
8872 			goto done;
8873 		if (yca_id == NULL) {
8874 			error = got_error_msg(GOT_ERR_ANCESTRY,
8875 			    "specified branch shares no common ancestry "
8876 			    "with work tree's branch");
8877 			goto done;
8878 		}
8879 
8880 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
8881 		if (error) {
8882 			if (error->code != GOT_ERR_ANCESTRY)
8883 				goto done;
8884 			error = NULL;
8885 		} else {
8886 			static char msg[128];
8887 			snprintf(msg, sizeof(msg),
8888 			    "%s is already based on %s",
8889 			    got_ref_get_name(branch),
8890 			    got_worktree_get_head_ref_name(worktree));
8891 			error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
8892 			goto done;
8893 		}
8894 		error = got_worktree_rebase_prepare(&new_base_branch,
8895 		    &tmp_branch, &fileindex, worktree, branch, repo);
8896 		if (error)
8897 			goto done;
8898 	}
8899 
8900 	commit_id = branch_head_commit_id;
8901 	error = got_object_open_as_commit(&commit, repo, commit_id);
8902 	if (error)
8903 		goto done;
8904 
8905 	parent_ids = got_object_commit_get_parent_ids(commit);
8906 	pid = STAILQ_FIRST(parent_ids);
8907 	if (pid == NULL) {
8908 		if (!continue_rebase) {
8909 			struct got_update_progress_arg upa;
8910 			memset(&upa, 0, sizeof(upa));
8911 			error = got_worktree_rebase_abort(worktree, fileindex,
8912 			    repo, new_base_branch, update_progress, &upa);
8913 			if (error)
8914 				goto done;
8915 			printf("Rebase of %s aborted\n",
8916 			    got_ref_get_name(branch));
8917 			print_update_progress_stats(&upa);
8918 
8919 		}
8920 		error = got_error(GOT_ERR_EMPTY_REBASE);
8921 		goto done;
8922 	}
8923 	error = collect_commits(&commits, commit_id, pid->id,
8924 	    yca_id, got_worktree_get_path_prefix(worktree),
8925 	    GOT_ERR_REBASE_PATH, repo);
8926 	got_object_commit_close(commit);
8927 	commit = NULL;
8928 	if (error)
8929 		goto done;
8930 
8931 	if (STAILQ_EMPTY(&commits)) {
8932 		if (continue_rebase) {
8933 			error = rebase_complete(worktree, fileindex,
8934 			    branch, new_base_branch, tmp_branch, repo,
8935 			    create_backup);
8936 			goto done;
8937 		} else {
8938 			/* Fast-forward the reference of the branch. */
8939 			struct got_object_id *new_head_commit_id;
8940 			char *id_str;
8941 			error = got_ref_resolve(&new_head_commit_id, repo,
8942 			    new_base_branch);
8943 			if (error)
8944 				goto done;
8945 			error = got_object_id_str(&id_str, new_head_commit_id);
8946 			printf("Forwarding %s to commit %s\n",
8947 			    got_ref_get_name(branch), id_str);
8948 			free(id_str);
8949 			error = got_ref_change_ref(branch,
8950 			    new_head_commit_id);
8951 			if (error)
8952 				goto done;
8953 			/* No backup needed since objects did not change. */
8954 			create_backup = 0;
8955 		}
8956 	}
8957 
8958 	pid = NULL;
8959 	STAILQ_FOREACH(qid, &commits, entry) {
8960 		struct got_update_progress_arg upa;
8961 
8962 		commit_id = qid->id;
8963 		parent_id = pid ? pid->id : yca_id;
8964 		pid = qid;
8965 
8966 		memset(&upa, 0, sizeof(upa));
8967 		error = got_worktree_rebase_merge_files(&merged_paths,
8968 		    worktree, fileindex, parent_id, commit_id, repo,
8969 		    update_progress, &upa, check_cancelled, NULL);
8970 		if (error)
8971 			goto done;
8972 
8973 		print_update_progress_stats(&upa);
8974 		if (upa.conflicts > 0)
8975 			rebase_status = GOT_STATUS_CONFLICT;
8976 
8977 		if (rebase_status == GOT_STATUS_CONFLICT) {
8978 			error = show_rebase_merge_conflict(qid->id, repo);
8979 			if (error)
8980 				goto done;
8981 			got_worktree_rebase_pathlist_free(&merged_paths);
8982 			break;
8983 		}
8984 
8985 		error = rebase_commit(&merged_paths, worktree, fileindex,
8986 		    tmp_branch, commit_id, repo);
8987 		got_worktree_rebase_pathlist_free(&merged_paths);
8988 		if (error)
8989 			goto done;
8990 	}
8991 
8992 	if (rebase_status == GOT_STATUS_CONFLICT) {
8993 		error = got_worktree_rebase_postpone(worktree, fileindex);
8994 		if (error)
8995 			goto done;
8996 		error = got_error_msg(GOT_ERR_CONFLICTS,
8997 		    "conflicts must be resolved before rebasing can continue");
8998 	} else
8999 		error = rebase_complete(worktree, fileindex, branch,
9000 		    new_base_branch, tmp_branch, repo, create_backup);
9001 done:
9002 	got_object_id_queue_free(&commits);
9003 	free(branch_head_commit_id);
9004 	free(resume_commit_id);
9005 	free(yca_id);
9006 	if (commit)
9007 		got_object_commit_close(commit);
9008 	if (branch)
9009 		got_ref_close(branch);
9010 	if (new_base_branch)
9011 		got_ref_close(new_base_branch);
9012 	if (tmp_branch)
9013 		got_ref_close(tmp_branch);
9014 	if (worktree)
9015 		got_worktree_close(worktree);
9016 	if (repo) {
9017 		const struct got_error *close_err = got_repo_close(repo);
9018 		if (error == NULL)
9019 			error = close_err;
9020 	}
9021 	return error;
9022 }
9023 
9024 __dead static void
9025 usage_histedit(void)
9026 {
9027 	fprintf(stderr, "usage: %s histedit [-a] [-c] [-f] "
9028 	    "[-F histedit-script] [-m] [-l] [-X] [branch]\n",
9029 	    getprogname());
9030 	exit(1);
9031 }
9032 
9033 #define GOT_HISTEDIT_PICK 'p'
9034 #define GOT_HISTEDIT_EDIT 'e'
9035 #define GOT_HISTEDIT_FOLD 'f'
9036 #define GOT_HISTEDIT_DROP 'd'
9037 #define GOT_HISTEDIT_MESG 'm'
9038 
9039 static struct got_histedit_cmd {
9040 	unsigned char code;
9041 	const char *name;
9042 	const char *desc;
9043 } got_histedit_cmds[] = {
9044 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
9045 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
9046 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
9047 	    "be used" },
9048 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
9049 	{ GOT_HISTEDIT_MESG, "mesg",
9050 	    "single-line log message for commit above (open editor if empty)" },
9051 };
9052 
9053 struct got_histedit_list_entry {
9054 	TAILQ_ENTRY(got_histedit_list_entry) entry;
9055 	struct got_object_id *commit_id;
9056 	const struct got_histedit_cmd *cmd;
9057 	char *logmsg;
9058 };
9059 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
9060 
9061 static const struct got_error *
9062 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
9063     FILE *f, struct got_repository *repo)
9064 {
9065 	const struct got_error *err = NULL;
9066 	char *logmsg = NULL, *id_str = NULL;
9067 	struct got_commit_object *commit = NULL;
9068 	int n;
9069 
9070 	err = got_object_open_as_commit(&commit, repo, commit_id);
9071 	if (err)
9072 		goto done;
9073 
9074 	err = get_short_logmsg(&logmsg, 34, commit);
9075 	if (err)
9076 		goto done;
9077 
9078 	err = got_object_id_str(&id_str, commit_id);
9079 	if (err)
9080 		goto done;
9081 
9082 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
9083 	if (n < 0)
9084 		err = got_ferror(f, GOT_ERR_IO);
9085 done:
9086 	if (commit)
9087 		got_object_commit_close(commit);
9088 	free(id_str);
9089 	free(logmsg);
9090 	return err;
9091 }
9092 
9093 static const struct got_error *
9094 histedit_write_commit_list(struct got_object_id_queue *commits,
9095     FILE *f, int edit_logmsg_only, int fold_only, struct got_repository *repo)
9096 {
9097 	const struct got_error *err = NULL;
9098 	struct got_object_qid *qid;
9099 	const char *histedit_cmd = NULL;
9100 
9101 	if (STAILQ_EMPTY(commits))
9102 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
9103 
9104 	STAILQ_FOREACH(qid, commits, entry) {
9105 		histedit_cmd = got_histedit_cmds[0].name;
9106 		if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
9107 			histedit_cmd = "fold";
9108 		err = histedit_write_commit(qid->id, histedit_cmd, f, repo);
9109 		if (err)
9110 			break;
9111 		if (edit_logmsg_only) {
9112 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
9113 			if (n < 0) {
9114 				err = got_ferror(f, GOT_ERR_IO);
9115 				break;
9116 			}
9117 		}
9118 	}
9119 
9120 	return err;
9121 }
9122 
9123 static const struct got_error *
9124 write_cmd_list(FILE *f, const char *branch_name,
9125     struct got_object_id_queue *commits)
9126 {
9127 	const struct got_error *err = NULL;
9128 	size_t i;
9129 	int n;
9130 	char *id_str;
9131 	struct got_object_qid *qid;
9132 
9133 	qid = STAILQ_FIRST(commits);
9134 	err = got_object_id_str(&id_str, qid->id);
9135 	if (err)
9136 		return err;
9137 
9138 	n = fprintf(f,
9139 	    "# Editing the history of branch '%s' starting at\n"
9140 	    "# commit %s\n"
9141 	    "# Commits will be processed in order from top to "
9142 	    "bottom of this file.\n", branch_name, id_str);
9143 	if (n < 0) {
9144 		err = got_ferror(f, GOT_ERR_IO);
9145 		goto done;
9146 	}
9147 
9148 	n = fprintf(f, "# Available histedit commands:\n");
9149 	if (n < 0) {
9150 		err = got_ferror(f, GOT_ERR_IO);
9151 		goto done;
9152 	}
9153 
9154 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
9155 		struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
9156 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
9157 		    cmd->desc);
9158 		if (n < 0) {
9159 			err = got_ferror(f, GOT_ERR_IO);
9160 			break;
9161 		}
9162 	}
9163 done:
9164 	free(id_str);
9165 	return err;
9166 }
9167 
9168 static const struct got_error *
9169 histedit_syntax_error(int lineno)
9170 {
9171 	static char msg[42];
9172 	int ret;
9173 
9174 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
9175 	    lineno);
9176 	if (ret == -1 || ret >= sizeof(msg))
9177 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
9178 
9179 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
9180 }
9181 
9182 static const struct got_error *
9183 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
9184     char *logmsg, struct got_repository *repo)
9185 {
9186 	const struct got_error *err;
9187 	struct got_commit_object *folded_commit = NULL;
9188 	char *id_str, *folded_logmsg = NULL;
9189 
9190 	err = got_object_id_str(&id_str, hle->commit_id);
9191 	if (err)
9192 		return err;
9193 
9194 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
9195 	if (err)
9196 		goto done;
9197 
9198 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
9199 	if (err)
9200 		goto done;
9201 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
9202 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
9203 	    folded_logmsg) == -1) {
9204 		err = got_error_from_errno("asprintf");
9205 	}
9206 done:
9207 	if (folded_commit)
9208 		got_object_commit_close(folded_commit);
9209 	free(id_str);
9210 	free(folded_logmsg);
9211 	return err;
9212 }
9213 
9214 static struct got_histedit_list_entry *
9215 get_folded_commits(struct got_histedit_list_entry *hle)
9216 {
9217 	struct got_histedit_list_entry *prev, *folded = NULL;
9218 
9219 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
9220 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
9221 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
9222 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
9223 			folded = prev;
9224 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
9225 	}
9226 
9227 	return folded;
9228 }
9229 
9230 static const struct got_error *
9231 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
9232     struct got_repository *repo)
9233 {
9234 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
9235 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
9236 	const struct got_error *err = NULL;
9237 	struct got_commit_object *commit = NULL;
9238 	int logmsg_len;
9239 	int fd;
9240 	struct got_histedit_list_entry *folded = NULL;
9241 
9242 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
9243 	if (err)
9244 		return err;
9245 
9246 	folded = get_folded_commits(hle);
9247 	if (folded) {
9248 		while (folded != hle) {
9249 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
9250 				folded = TAILQ_NEXT(folded, entry);
9251 				continue;
9252 			}
9253 			err = append_folded_commit_msg(&new_msg, folded,
9254 			    logmsg, repo);
9255 			if (err)
9256 				goto done;
9257 			free(logmsg);
9258 			logmsg = new_msg;
9259 			folded = TAILQ_NEXT(folded, entry);
9260 		}
9261 	}
9262 
9263 	err = got_object_id_str(&id_str, hle->commit_id);
9264 	if (err)
9265 		goto done;
9266 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
9267 	if (err)
9268 		goto done;
9269 	logmsg_len = asprintf(&new_msg,
9270 	    "%s\n# original log message of commit %s: %s",
9271 	    logmsg ? logmsg : "", id_str, orig_logmsg);
9272 	if (logmsg_len == -1) {
9273 		err = got_error_from_errno("asprintf");
9274 		goto done;
9275 	}
9276 	free(logmsg);
9277 	logmsg = new_msg;
9278 
9279 	err = got_object_id_str(&id_str, hle->commit_id);
9280 	if (err)
9281 		goto done;
9282 
9283 	err = got_opentemp_named_fd(&logmsg_path, &fd,
9284 	    GOT_TMPDIR_STR "/got-logmsg");
9285 	if (err)
9286 		goto done;
9287 
9288 	write(fd, logmsg, logmsg_len);
9289 	close(fd);
9290 
9291 	err = get_editor(&editor);
9292 	if (err)
9293 		goto done;
9294 
9295 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
9296 	    logmsg_len, 0);
9297 	if (err) {
9298 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
9299 			goto done;
9300 		err = NULL;
9301 		hle->logmsg = strdup(new_msg);
9302 		if (hle->logmsg == NULL)
9303 			err = got_error_from_errno("strdup");
9304 	}
9305 done:
9306 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
9307 		err = got_error_from_errno2("unlink", logmsg_path);
9308 	free(logmsg_path);
9309 	free(logmsg);
9310 	free(orig_logmsg);
9311 	free(editor);
9312 	if (commit)
9313 		got_object_commit_close(commit);
9314 	return err;
9315 }
9316 
9317 static const struct got_error *
9318 histedit_parse_list(struct got_histedit_list *histedit_cmds,
9319     FILE *f, struct got_repository *repo)
9320 {
9321 	const struct got_error *err = NULL;
9322 	char *line = NULL, *p, *end;
9323 	size_t i, size;
9324 	ssize_t len;
9325 	int lineno = 0;
9326 	const struct got_histedit_cmd *cmd;
9327 	struct got_object_id *commit_id = NULL;
9328 	struct got_histedit_list_entry *hle = NULL;
9329 
9330 	for (;;) {
9331 		len = getline(&line, &size, f);
9332 		if (len == -1) {
9333 			const struct got_error *getline_err;
9334 			if (feof(f))
9335 				break;
9336 			getline_err = got_error_from_errno("getline");
9337 			err = got_ferror(f, getline_err->code);
9338 			break;
9339 		}
9340 		lineno++;
9341 		p = line;
9342 		while (isspace((unsigned char)p[0]))
9343 			p++;
9344 		if (p[0] == '#' || p[0] == '\0') {
9345 			free(line);
9346 			line = NULL;
9347 			continue;
9348 		}
9349 		cmd = NULL;
9350 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
9351 			cmd = &got_histedit_cmds[i];
9352 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
9353 			    isspace((unsigned char)p[strlen(cmd->name)])) {
9354 				p += strlen(cmd->name);
9355 				break;
9356 			}
9357 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
9358 				p++;
9359 				break;
9360 			}
9361 		}
9362 		if (i == nitems(got_histedit_cmds)) {
9363 			err = histedit_syntax_error(lineno);
9364 			break;
9365 		}
9366 		while (isspace((unsigned char)p[0]))
9367 			p++;
9368 		if (cmd->code == GOT_HISTEDIT_MESG) {
9369 			if (hle == NULL || hle->logmsg != NULL) {
9370 				err = got_error(GOT_ERR_HISTEDIT_CMD);
9371 				break;
9372 			}
9373 			if (p[0] == '\0') {
9374 				err = histedit_edit_logmsg(hle, repo);
9375 				if (err)
9376 					break;
9377 			} else {
9378 				hle->logmsg = strdup(p);
9379 				if (hle->logmsg == NULL) {
9380 					err = got_error_from_errno("strdup");
9381 					break;
9382 				}
9383 			}
9384 			free(line);
9385 			line = NULL;
9386 			continue;
9387 		} else {
9388 			end = p;
9389 			while (end[0] && !isspace((unsigned char)end[0]))
9390 				end++;
9391 			*end = '\0';
9392 
9393 			err = got_object_resolve_id_str(&commit_id, repo, p);
9394 			if (err) {
9395 				/* override error code */
9396 				err = histedit_syntax_error(lineno);
9397 				break;
9398 			}
9399 		}
9400 		hle = malloc(sizeof(*hle));
9401 		if (hle == NULL) {
9402 			err = got_error_from_errno("malloc");
9403 			break;
9404 		}
9405 		hle->cmd = cmd;
9406 		hle->commit_id = commit_id;
9407 		hle->logmsg = NULL;
9408 		commit_id = NULL;
9409 		free(line);
9410 		line = NULL;
9411 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
9412 	}
9413 
9414 	free(line);
9415 	free(commit_id);
9416 	return err;
9417 }
9418 
9419 static const struct got_error *
9420 histedit_check_script(struct got_histedit_list *histedit_cmds,
9421     struct got_object_id_queue *commits, struct got_repository *repo)
9422 {
9423 	const struct got_error *err = NULL;
9424 	struct got_object_qid *qid;
9425 	struct got_histedit_list_entry *hle;
9426 	static char msg[92];
9427 	char *id_str;
9428 
9429 	if (TAILQ_EMPTY(histedit_cmds))
9430 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
9431 		    "histedit script contains no commands");
9432 	if (STAILQ_EMPTY(commits))
9433 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
9434 
9435 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
9436 		struct got_histedit_list_entry *hle2;
9437 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
9438 			if (hle == hle2)
9439 				continue;
9440 			if (got_object_id_cmp(hle->commit_id,
9441 			    hle2->commit_id) != 0)
9442 				continue;
9443 			err = got_object_id_str(&id_str, hle->commit_id);
9444 			if (err)
9445 				return err;
9446 			snprintf(msg, sizeof(msg), "commit %s is listed "
9447 			    "more than once in histedit script", id_str);
9448 			free(id_str);
9449 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
9450 		}
9451 	}
9452 
9453 	STAILQ_FOREACH(qid, commits, entry) {
9454 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
9455 			if (got_object_id_cmp(qid->id, hle->commit_id) == 0)
9456 				break;
9457 		}
9458 		if (hle == NULL) {
9459 			err = got_object_id_str(&id_str, qid->id);
9460 			if (err)
9461 				return err;
9462 			snprintf(msg, sizeof(msg),
9463 			    "commit %s missing from histedit script", id_str);
9464 			free(id_str);
9465 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
9466 		}
9467 	}
9468 
9469 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
9470 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
9471 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
9472 		    "last commit in histedit script cannot be folded");
9473 
9474 	return NULL;
9475 }
9476 
9477 static const struct got_error *
9478 histedit_run_editor(struct got_histedit_list *histedit_cmds,
9479     const char *path, struct got_object_id_queue *commits,
9480     struct got_repository *repo)
9481 {
9482 	const struct got_error *err = NULL;
9483 	char *editor;
9484 	FILE *f = NULL;
9485 
9486 	err = get_editor(&editor);
9487 	if (err)
9488 		return err;
9489 
9490 	if (spawn_editor(editor, path) == -1) {
9491 		err = got_error_from_errno("failed spawning editor");
9492 		goto done;
9493 	}
9494 
9495 	f = fopen(path, "r");
9496 	if (f == NULL) {
9497 		err = got_error_from_errno("fopen");
9498 		goto done;
9499 	}
9500 	err = histedit_parse_list(histedit_cmds, f, repo);
9501 	if (err)
9502 		goto done;
9503 
9504 	err = histedit_check_script(histedit_cmds, commits, repo);
9505 done:
9506 	if (f && fclose(f) == EOF && err == NULL)
9507 		err = got_error_from_errno("fclose");
9508 	free(editor);
9509 	return err;
9510 }
9511 
9512 static const struct got_error *
9513 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
9514     struct got_object_id_queue *, const char *, const char *,
9515     struct got_repository *);
9516 
9517 static const struct got_error *
9518 histedit_edit_script(struct got_histedit_list *histedit_cmds,
9519     struct got_object_id_queue *commits, const char *branch_name,
9520     int edit_logmsg_only, int fold_only, struct got_repository *repo)
9521 {
9522 	const struct got_error *err;
9523 	FILE *f = NULL;
9524 	char *path = NULL;
9525 
9526 	err = got_opentemp_named(&path, &f, "got-histedit");
9527 	if (err)
9528 		return err;
9529 
9530 	err = write_cmd_list(f, branch_name, commits);
9531 	if (err)
9532 		goto done;
9533 
9534 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
9535 	    fold_only, repo);
9536 	if (err)
9537 		goto done;
9538 
9539 	if (edit_logmsg_only || fold_only) {
9540 		rewind(f);
9541 		err = histedit_parse_list(histedit_cmds, f, repo);
9542 	} else {
9543 		if (fclose(f) == EOF) {
9544 			err = got_error_from_errno("fclose");
9545 			goto done;
9546 		}
9547 		f = NULL;
9548 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
9549 		if (err) {
9550 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
9551 			    err->code != GOT_ERR_HISTEDIT_CMD)
9552 				goto done;
9553 			err = histedit_edit_list_retry(histedit_cmds, err,
9554 			    commits, path, branch_name, repo);
9555 		}
9556 	}
9557 done:
9558 	if (f && fclose(f) == EOF && err == NULL)
9559 		err = got_error_from_errno("fclose");
9560 	if (path && unlink(path) != 0 && err == NULL)
9561 		err = got_error_from_errno2("unlink", path);
9562 	free(path);
9563 	return err;
9564 }
9565 
9566 static const struct got_error *
9567 histedit_save_list(struct got_histedit_list *histedit_cmds,
9568     struct got_worktree *worktree, struct got_repository *repo)
9569 {
9570 	const struct got_error *err = NULL;
9571 	char *path = NULL;
9572 	FILE *f = NULL;
9573 	struct got_histedit_list_entry *hle;
9574 	struct got_commit_object *commit = NULL;
9575 
9576 	err = got_worktree_get_histedit_script_path(&path, worktree);
9577 	if (err)
9578 		return err;
9579 
9580 	f = fopen(path, "w");
9581 	if (f == NULL) {
9582 		err = got_error_from_errno2("fopen", path);
9583 		goto done;
9584 	}
9585 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
9586 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
9587 		    repo);
9588 		if (err)
9589 			break;
9590 
9591 		if (hle->logmsg) {
9592 			int n = fprintf(f, "%c %s\n",
9593 			    GOT_HISTEDIT_MESG, hle->logmsg);
9594 			if (n < 0) {
9595 				err = got_ferror(f, GOT_ERR_IO);
9596 				break;
9597 			}
9598 		}
9599 	}
9600 done:
9601 	if (f && fclose(f) == EOF && err == NULL)
9602 		err = got_error_from_errno("fclose");
9603 	free(path);
9604 	if (commit)
9605 		got_object_commit_close(commit);
9606 	return err;
9607 }
9608 
9609 void
9610 histedit_free_list(struct got_histedit_list *histedit_cmds)
9611 {
9612 	struct got_histedit_list_entry *hle;
9613 
9614 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
9615 		TAILQ_REMOVE(histedit_cmds, hle, entry);
9616 		free(hle);
9617 	}
9618 }
9619 
9620 static const struct got_error *
9621 histedit_load_list(struct got_histedit_list *histedit_cmds,
9622     const char *path, struct got_repository *repo)
9623 {
9624 	const struct got_error *err = NULL;
9625 	FILE *f = NULL;
9626 
9627 	f = fopen(path, "r");
9628 	if (f == NULL) {
9629 		err = got_error_from_errno2("fopen", path);
9630 		goto done;
9631 	}
9632 
9633 	err = histedit_parse_list(histedit_cmds, f, repo);
9634 done:
9635 	if (f && fclose(f) == EOF && err == NULL)
9636 		err = got_error_from_errno("fclose");
9637 	return err;
9638 }
9639 
9640 static const struct got_error *
9641 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
9642     const struct got_error *edit_err, struct got_object_id_queue *commits,
9643     const char *path, const char *branch_name, struct got_repository *repo)
9644 {
9645 	const struct got_error *err = NULL, *prev_err = edit_err;
9646 	int resp = ' ';
9647 
9648 	while (resp != 'c' && resp != 'r' && resp != 'a') {
9649 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
9650 		    "or (a)bort: ", getprogname(), prev_err->msg);
9651 		resp = getchar();
9652 		if (resp == '\n')
9653 			resp = getchar();
9654 		if (resp == 'c') {
9655 			histedit_free_list(histedit_cmds);
9656 			err = histedit_run_editor(histedit_cmds, path, commits,
9657 			    repo);
9658 			if (err) {
9659 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
9660 				    err->code != GOT_ERR_HISTEDIT_CMD)
9661 					break;
9662 				prev_err = err;
9663 				resp = ' ';
9664 				continue;
9665 			}
9666 			break;
9667 		} else if (resp == 'r') {
9668 			histedit_free_list(histedit_cmds);
9669 			err = histedit_edit_script(histedit_cmds,
9670 			    commits, branch_name, 0, 0, repo);
9671 			if (err) {
9672 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
9673 				    err->code != GOT_ERR_HISTEDIT_CMD)
9674 					break;
9675 				prev_err = err;
9676 				resp = ' ';
9677 				continue;
9678 			}
9679 			break;
9680 		} else if (resp == 'a') {
9681 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
9682 			break;
9683 		} else
9684 			printf("invalid response '%c'\n", resp);
9685 	}
9686 
9687 	return err;
9688 }
9689 
9690 static const struct got_error *
9691 histedit_complete(struct got_worktree *worktree,
9692     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
9693     struct got_reference *branch, struct got_repository *repo)
9694 {
9695 	printf("Switching work tree to %s\n",
9696 	    got_ref_get_symref_target(branch));
9697 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
9698 	    branch, repo);
9699 }
9700 
9701 static const struct got_error *
9702 show_histedit_progress(struct got_commit_object *commit,
9703     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
9704 {
9705 	const struct got_error *err;
9706 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
9707 
9708 	err = got_object_id_str(&old_id_str, hle->commit_id);
9709 	if (err)
9710 		goto done;
9711 
9712 	if (new_id) {
9713 		err = got_object_id_str(&new_id_str, new_id);
9714 		if (err)
9715 			goto done;
9716 	}
9717 
9718 	old_id_str[12] = '\0';
9719 	if (new_id_str)
9720 		new_id_str[12] = '\0';
9721 
9722 	if (hle->logmsg) {
9723 		logmsg = strdup(hle->logmsg);
9724 		if (logmsg == NULL) {
9725 			err = got_error_from_errno("strdup");
9726 			goto done;
9727 		}
9728 		trim_logmsg(logmsg, 42);
9729 	} else {
9730 		err = get_short_logmsg(&logmsg, 42, commit);
9731 		if (err)
9732 			goto done;
9733 	}
9734 
9735 	switch (hle->cmd->code) {
9736 	case GOT_HISTEDIT_PICK:
9737 	case GOT_HISTEDIT_EDIT:
9738 		printf("%s -> %s: %s\n", old_id_str,
9739 		    new_id_str ? new_id_str : "no-op change", logmsg);
9740 		break;
9741 	case GOT_HISTEDIT_DROP:
9742 	case GOT_HISTEDIT_FOLD:
9743 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
9744 		    logmsg);
9745 		break;
9746 	default:
9747 		break;
9748 	}
9749 done:
9750 	free(old_id_str);
9751 	free(new_id_str);
9752 	return err;
9753 }
9754 
9755 static const struct got_error *
9756 histedit_commit(struct got_pathlist_head *merged_paths,
9757     struct got_worktree *worktree, struct got_fileindex *fileindex,
9758     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
9759     struct got_repository *repo)
9760 {
9761 	const struct got_error *err;
9762 	struct got_commit_object *commit;
9763 	struct got_object_id *new_commit_id;
9764 
9765 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
9766 	    && hle->logmsg == NULL) {
9767 		err = histedit_edit_logmsg(hle, repo);
9768 		if (err)
9769 			return err;
9770 	}
9771 
9772 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
9773 	if (err)
9774 		return err;
9775 
9776 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
9777 	    worktree, fileindex, tmp_branch, commit, hle->commit_id,
9778 	    hle->logmsg, repo);
9779 	if (err) {
9780 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
9781 			goto done;
9782 		err = show_histedit_progress(commit, hle, NULL);
9783 	} else {
9784 		err = show_histedit_progress(commit, hle, new_commit_id);
9785 		free(new_commit_id);
9786 	}
9787 done:
9788 	got_object_commit_close(commit);
9789 	return err;
9790 }
9791 
9792 static const struct got_error *
9793 histedit_skip_commit(struct got_histedit_list_entry *hle,
9794     struct got_worktree *worktree, struct got_repository *repo)
9795 {
9796 	const struct got_error *error;
9797 	struct got_commit_object *commit;
9798 
9799 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
9800 	    repo);
9801 	if (error)
9802 		return error;
9803 
9804 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
9805 	if (error)
9806 		return error;
9807 
9808 	error = show_histedit_progress(commit, hle, NULL);
9809 	got_object_commit_close(commit);
9810 	return error;
9811 }
9812 
9813 static const struct got_error *
9814 check_local_changes(void *arg, unsigned char status,
9815     unsigned char staged_status, const char *path,
9816     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
9817     struct got_object_id *commit_id, int dirfd, const char *de_name)
9818 {
9819 	int *have_local_changes = arg;
9820 
9821 	switch (status) {
9822 	case GOT_STATUS_ADD:
9823 	case GOT_STATUS_DELETE:
9824 	case GOT_STATUS_MODIFY:
9825 	case GOT_STATUS_CONFLICT:
9826 		*have_local_changes = 1;
9827 		return got_error(GOT_ERR_CANCELLED);
9828 	default:
9829 		break;
9830 	}
9831 
9832 	switch (staged_status) {
9833 	case GOT_STATUS_ADD:
9834 	case GOT_STATUS_DELETE:
9835 	case GOT_STATUS_MODIFY:
9836 		*have_local_changes = 1;
9837 		return got_error(GOT_ERR_CANCELLED);
9838 	default:
9839 		break;
9840 	}
9841 
9842 	return NULL;
9843 }
9844 
9845 static const struct got_error *
9846 cmd_histedit(int argc, char *argv[])
9847 {
9848 	const struct got_error *error = NULL;
9849 	struct got_worktree *worktree = NULL;
9850 	struct got_fileindex *fileindex = NULL;
9851 	struct got_repository *repo = NULL;
9852 	char *cwd = NULL;
9853 	struct got_reference *branch = NULL;
9854 	struct got_reference *tmp_branch = NULL;
9855 	struct got_object_id *resume_commit_id = NULL;
9856 	struct got_object_id *base_commit_id = NULL;
9857 	struct got_object_id *head_commit_id = NULL;
9858 	struct got_commit_object *commit = NULL;
9859 	int ch, rebase_in_progress = 0;
9860 	struct got_update_progress_arg upa;
9861 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
9862 	int edit_logmsg_only = 0, fold_only = 0;
9863 	int list_backups = 0, delete_backups = 0;
9864 	const char *edit_script_path = NULL;
9865 	unsigned char rebase_status = GOT_STATUS_NO_CHANGE;
9866 	struct got_object_id_queue commits;
9867 	struct got_pathlist_head merged_paths;
9868 	const struct got_object_id_queue *parent_ids;
9869 	struct got_object_qid *pid;
9870 	struct got_histedit_list histedit_cmds;
9871 	struct got_histedit_list_entry *hle;
9872 
9873 	STAILQ_INIT(&commits);
9874 	TAILQ_INIT(&histedit_cmds);
9875 	TAILQ_INIT(&merged_paths);
9876 	memset(&upa, 0, sizeof(upa));
9877 
9878 	while ((ch = getopt(argc, argv, "acfF:mlX")) != -1) {
9879 		switch (ch) {
9880 		case 'a':
9881 			abort_edit = 1;
9882 			break;
9883 		case 'c':
9884 			continue_edit = 1;
9885 			break;
9886 		case 'f':
9887 			fold_only = 1;
9888 			break;
9889 		case 'F':
9890 			edit_script_path = optarg;
9891 			break;
9892 		case 'm':
9893 			edit_logmsg_only = 1;
9894 			break;
9895 		case 'l':
9896 			list_backups = 1;
9897 			break;
9898 		case 'X':
9899 			delete_backups = 1;
9900 			break;
9901 		default:
9902 			usage_histedit();
9903 			/* NOTREACHED */
9904 		}
9905 	}
9906 
9907 	argc -= optind;
9908 	argv += optind;
9909 
9910 #ifndef PROFILE
9911 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9912 	    "unveil", NULL) == -1)
9913 		err(1, "pledge");
9914 #endif
9915 	if (abort_edit && continue_edit)
9916 		option_conflict('a', 'c');
9917 	if (edit_script_path && edit_logmsg_only)
9918 		option_conflict('F', 'm');
9919 	if (abort_edit && edit_logmsg_only)
9920 		option_conflict('a', 'm');
9921 	if (continue_edit && edit_logmsg_only)
9922 		option_conflict('c', 'm');
9923 	if (abort_edit && fold_only)
9924 		option_conflict('a', 'f');
9925 	if (continue_edit && fold_only)
9926 		option_conflict('c', 'f');
9927 	if (fold_only && edit_logmsg_only)
9928 		option_conflict('f', 'm');
9929 	if (edit_script_path && fold_only)
9930 		option_conflict('F', 'f');
9931 	if (list_backups) {
9932 		if (abort_edit)
9933 			option_conflict('l', 'a');
9934 		if (continue_edit)
9935 			option_conflict('l', 'c');
9936 		if (edit_script_path)
9937 			option_conflict('l', 'F');
9938 		if (edit_logmsg_only)
9939 			option_conflict('l', 'm');
9940 		if (fold_only)
9941 			option_conflict('l', 'f');
9942 		if (delete_backups)
9943 			option_conflict('l', 'X');
9944 		if (argc != 0 && argc != 1)
9945 			usage_histedit();
9946 	} else if (delete_backups) {
9947 		if (abort_edit)
9948 			option_conflict('X', 'a');
9949 		if (continue_edit)
9950 			option_conflict('X', 'c');
9951 		if (edit_script_path)
9952 			option_conflict('X', 'F');
9953 		if (edit_logmsg_only)
9954 			option_conflict('X', 'm');
9955 		if (fold_only)
9956 			option_conflict('X', 'f');
9957 		if (list_backups)
9958 			option_conflict('X', 'l');
9959 		if (argc != 0 && argc != 1)
9960 			usage_histedit();
9961 	} else if (argc != 0)
9962 		usage_histedit();
9963 
9964 	/*
9965 	 * This command cannot apply unveil(2) in all cases because the
9966 	 * user may choose to run an editor to edit the histedit script
9967 	 * and to edit individual commit log messages.
9968 	 * unveil(2) traverses exec(2); if an editor is used we have to
9969 	 * apply unveil after edit script and log messages have been written.
9970 	 * XXX TODO: Make use of unveil(2) where possible.
9971 	 */
9972 
9973 	cwd = getcwd(NULL, 0);
9974 	if (cwd == NULL) {
9975 		error = got_error_from_errno("getcwd");
9976 		goto done;
9977 	}
9978 	error = got_worktree_open(&worktree, cwd);
9979 	if (error) {
9980 		if (list_backups || delete_backups) {
9981 			if (error->code != GOT_ERR_NOT_WORKTREE)
9982 				goto done;
9983 		} else {
9984 			if (error->code == GOT_ERR_NOT_WORKTREE)
9985 				error = wrap_not_worktree_error(error,
9986 				    "histedit", cwd);
9987 			goto done;
9988 		}
9989 	}
9990 
9991 	if (list_backups || delete_backups) {
9992 		error = got_repo_open(&repo,
9993 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
9994 		    NULL);
9995 		if (error != NULL)
9996 			goto done;
9997 		error = apply_unveil(got_repo_get_path(repo), 0,
9998 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
9999 		if (error)
10000 			goto done;
10001 		error = process_backup_refs(
10002 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
10003 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
10004 		goto done; /* nothing else to do */
10005 	}
10006 
10007 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10008 	    NULL);
10009 	if (error != NULL)
10010 		goto done;
10011 
10012 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10013 	if (error)
10014 		goto done;
10015 	if (rebase_in_progress) {
10016 		error = got_error(GOT_ERR_REBASING);
10017 		goto done;
10018 	}
10019 
10020 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
10021 	if (error)
10022 		goto done;
10023 
10024 	if (edit_in_progress && edit_logmsg_only) {
10025 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10026 		    "histedit operation is in progress in this "
10027 		    "work tree and must be continued or aborted "
10028 		    "before the -m option can be used");
10029 		goto done;
10030 	}
10031 	if (edit_in_progress && fold_only) {
10032 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10033 		    "histedit operation is in progress in this "
10034 		    "work tree and must be continued or aborted "
10035 		    "before the -f option can be used");
10036 		goto done;
10037 	}
10038 
10039 	if (edit_in_progress && abort_edit) {
10040 		error = got_worktree_histedit_continue(&resume_commit_id,
10041 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
10042 		    worktree, repo);
10043 		if (error)
10044 			goto done;
10045 		printf("Switching work tree to %s\n",
10046 		    got_ref_get_symref_target(branch));
10047 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
10048 		    branch, base_commit_id, update_progress, &upa);
10049 		if (error)
10050 			goto done;
10051 		printf("Histedit of %s aborted\n",
10052 		    got_ref_get_symref_target(branch));
10053 		print_update_progress_stats(&upa);
10054 		goto done; /* nothing else to do */
10055 	} else if (abort_edit) {
10056 		error = got_error(GOT_ERR_NOT_HISTEDIT);
10057 		goto done;
10058 	}
10059 
10060 	if (continue_edit) {
10061 		char *path;
10062 
10063 		if (!edit_in_progress) {
10064 			error = got_error(GOT_ERR_NOT_HISTEDIT);
10065 			goto done;
10066 		}
10067 
10068 		error = got_worktree_get_histedit_script_path(&path, worktree);
10069 		if (error)
10070 			goto done;
10071 
10072 		error = histedit_load_list(&histedit_cmds, path, repo);
10073 		free(path);
10074 		if (error)
10075 			goto done;
10076 
10077 		error = got_worktree_histedit_continue(&resume_commit_id,
10078 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
10079 		    worktree, repo);
10080 		if (error)
10081 			goto done;
10082 
10083 		error = got_ref_resolve(&head_commit_id, repo, branch);
10084 		if (error)
10085 			goto done;
10086 
10087 		error = got_object_open_as_commit(&commit, repo,
10088 		    head_commit_id);
10089 		if (error)
10090 			goto done;
10091 		parent_ids = got_object_commit_get_parent_ids(commit);
10092 		pid = STAILQ_FIRST(parent_ids);
10093 		if (pid == NULL) {
10094 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10095 			goto done;
10096 		}
10097 		error = collect_commits(&commits, head_commit_id, pid->id,
10098 		    base_commit_id, got_worktree_get_path_prefix(worktree),
10099 		    GOT_ERR_HISTEDIT_PATH, repo);
10100 		got_object_commit_close(commit);
10101 		commit = NULL;
10102 		if (error)
10103 			goto done;
10104 	} else {
10105 		if (edit_in_progress) {
10106 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
10107 			goto done;
10108 		}
10109 
10110 		error = got_ref_open(&branch, repo,
10111 		    got_worktree_get_head_ref_name(worktree), 0);
10112 		if (error != NULL)
10113 			goto done;
10114 
10115 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
10116 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
10117 			    "will not edit commit history of a branch outside "
10118 			    "the \"refs/heads/\" reference namespace");
10119 			goto done;
10120 		}
10121 
10122 		error = got_ref_resolve(&head_commit_id, repo, branch);
10123 		got_ref_close(branch);
10124 		branch = NULL;
10125 		if (error)
10126 			goto done;
10127 
10128 		error = got_object_open_as_commit(&commit, repo,
10129 		    head_commit_id);
10130 		if (error)
10131 			goto done;
10132 		parent_ids = got_object_commit_get_parent_ids(commit);
10133 		pid = STAILQ_FIRST(parent_ids);
10134 		if (pid == NULL) {
10135 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10136 			goto done;
10137 		}
10138 		error = collect_commits(&commits, head_commit_id, pid->id,
10139 		    got_worktree_get_base_commit_id(worktree),
10140 		    got_worktree_get_path_prefix(worktree),
10141 		    GOT_ERR_HISTEDIT_PATH, repo);
10142 		got_object_commit_close(commit);
10143 		commit = NULL;
10144 		if (error)
10145 			goto done;
10146 
10147 		if (STAILQ_EMPTY(&commits)) {
10148 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10149 			goto done;
10150 		}
10151 
10152 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
10153 		    &base_commit_id, &fileindex, worktree, repo);
10154 		if (error)
10155 			goto done;
10156 
10157 		if (edit_script_path) {
10158 			error = histedit_load_list(&histedit_cmds,
10159 			    edit_script_path, repo);
10160 			if (error) {
10161 				got_worktree_histedit_abort(worktree, fileindex,
10162 				    repo, branch, base_commit_id,
10163 				    update_progress, &upa);
10164 				print_update_progress_stats(&upa);
10165 				goto done;
10166 			}
10167 		} else {
10168 			const char *branch_name;
10169 			branch_name = got_ref_get_symref_target(branch);
10170 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
10171 				branch_name += 11;
10172 			error = histedit_edit_script(&histedit_cmds, &commits,
10173 			    branch_name, edit_logmsg_only, fold_only, repo);
10174 			if (error) {
10175 				got_worktree_histedit_abort(worktree, fileindex,
10176 				    repo, branch, base_commit_id,
10177 				    update_progress, &upa);
10178 				print_update_progress_stats(&upa);
10179 				goto done;
10180 			}
10181 
10182 		}
10183 
10184 		error = histedit_save_list(&histedit_cmds, worktree,
10185 		    repo);
10186 		if (error) {
10187 			got_worktree_histedit_abort(worktree, fileindex,
10188 			    repo, branch, base_commit_id,
10189 			    update_progress, &upa);
10190 			print_update_progress_stats(&upa);
10191 			goto done;
10192 		}
10193 
10194 	}
10195 
10196 	error = histedit_check_script(&histedit_cmds, &commits, repo);
10197 	if (error)
10198 		goto done;
10199 
10200 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
10201 		if (resume_commit_id) {
10202 			if (got_object_id_cmp(hle->commit_id,
10203 			    resume_commit_id) != 0)
10204 				continue;
10205 
10206 			resume_commit_id = NULL;
10207 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
10208 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
10209 				error = histedit_skip_commit(hle, worktree,
10210 				    repo);
10211 				if (error)
10212 					goto done;
10213 			} else {
10214 				struct got_pathlist_head paths;
10215 				int have_changes = 0;
10216 
10217 				TAILQ_INIT(&paths);
10218 				error = got_pathlist_append(&paths, "", NULL);
10219 				if (error)
10220 					goto done;
10221 				error = got_worktree_status(worktree, &paths,
10222 				    repo, 0, check_local_changes, &have_changes,
10223 				    check_cancelled, NULL);
10224 				got_pathlist_free(&paths);
10225 				if (error) {
10226 					if (error->code != GOT_ERR_CANCELLED)
10227 						goto done;
10228 					if (sigint_received || sigpipe_received)
10229 						goto done;
10230 				}
10231 				if (have_changes) {
10232 					error = histedit_commit(NULL, worktree,
10233 					    fileindex, tmp_branch, hle, repo);
10234 					if (error)
10235 						goto done;
10236 				} else {
10237 					error = got_object_open_as_commit(
10238 					    &commit, repo, hle->commit_id);
10239 					if (error)
10240 						goto done;
10241 					error = show_histedit_progress(commit,
10242 					    hle, NULL);
10243 					got_object_commit_close(commit);
10244 					commit = NULL;
10245 					if (error)
10246 						goto done;
10247 				}
10248 			}
10249 			continue;
10250 		}
10251 
10252 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
10253 			error = histedit_skip_commit(hle, worktree, repo);
10254 			if (error)
10255 				goto done;
10256 			continue;
10257 		}
10258 
10259 		error = got_object_open_as_commit(&commit, repo,
10260 		    hle->commit_id);
10261 		if (error)
10262 			goto done;
10263 		parent_ids = got_object_commit_get_parent_ids(commit);
10264 		pid = STAILQ_FIRST(parent_ids);
10265 
10266 		error = got_worktree_histedit_merge_files(&merged_paths,
10267 		    worktree, fileindex, pid->id, hle->commit_id, repo,
10268 		    update_progress, &upa, check_cancelled, NULL);
10269 		if (error)
10270 			goto done;
10271 		got_object_commit_close(commit);
10272 		commit = NULL;
10273 
10274 		print_update_progress_stats(&upa);
10275 		if (upa.conflicts > 0)
10276 			rebase_status = GOT_STATUS_CONFLICT;
10277 
10278 		if (rebase_status == GOT_STATUS_CONFLICT) {
10279 			error = show_rebase_merge_conflict(hle->commit_id,
10280 			    repo);
10281 			if (error)
10282 				goto done;
10283 			got_worktree_rebase_pathlist_free(&merged_paths);
10284 			break;
10285 		}
10286 
10287 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
10288 			char *id_str;
10289 			error = got_object_id_str(&id_str, hle->commit_id);
10290 			if (error)
10291 				goto done;
10292 			printf("Stopping histedit for amending commit %s\n",
10293 			    id_str);
10294 			free(id_str);
10295 			got_worktree_rebase_pathlist_free(&merged_paths);
10296 			error = got_worktree_histedit_postpone(worktree,
10297 			    fileindex);
10298 			goto done;
10299 		}
10300 
10301 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
10302 			error = histedit_skip_commit(hle, worktree, repo);
10303 			if (error)
10304 				goto done;
10305 			continue;
10306 		}
10307 
10308 		error = histedit_commit(&merged_paths, worktree, fileindex,
10309 		    tmp_branch, hle, repo);
10310 		got_worktree_rebase_pathlist_free(&merged_paths);
10311 		if (error)
10312 			goto done;
10313 	}
10314 
10315 	if (rebase_status == GOT_STATUS_CONFLICT) {
10316 		error = got_worktree_histedit_postpone(worktree, fileindex);
10317 		if (error)
10318 			goto done;
10319 		error = got_error_msg(GOT_ERR_CONFLICTS,
10320 		    "conflicts must be resolved before histedit can continue");
10321 	} else
10322 		error = histedit_complete(worktree, fileindex, tmp_branch,
10323 		    branch, repo);
10324 done:
10325 	got_object_id_queue_free(&commits);
10326 	histedit_free_list(&histedit_cmds);
10327 	free(head_commit_id);
10328 	free(base_commit_id);
10329 	free(resume_commit_id);
10330 	if (commit)
10331 		got_object_commit_close(commit);
10332 	if (branch)
10333 		got_ref_close(branch);
10334 	if (tmp_branch)
10335 		got_ref_close(tmp_branch);
10336 	if (worktree)
10337 		got_worktree_close(worktree);
10338 	if (repo) {
10339 		const struct got_error *close_err = got_repo_close(repo);
10340 		if (error == NULL)
10341 			error = close_err;
10342 	}
10343 	return error;
10344 }
10345 
10346 __dead static void
10347 usage_integrate(void)
10348 {
10349 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
10350 	exit(1);
10351 }
10352 
10353 static const struct got_error *
10354 cmd_integrate(int argc, char *argv[])
10355 {
10356 	const struct got_error *error = NULL;
10357 	struct got_repository *repo = NULL;
10358 	struct got_worktree *worktree = NULL;
10359 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
10360 	const char *branch_arg = NULL;
10361 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
10362 	struct got_fileindex *fileindex = NULL;
10363 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
10364 	int ch;
10365 	struct got_update_progress_arg upa;
10366 
10367 	while ((ch = getopt(argc, argv, "")) != -1) {
10368 		switch (ch) {
10369 		default:
10370 			usage_integrate();
10371 			/* NOTREACHED */
10372 		}
10373 	}
10374 
10375 	argc -= optind;
10376 	argv += optind;
10377 
10378 	if (argc != 1)
10379 		usage_integrate();
10380 	branch_arg = argv[0];
10381 #ifndef PROFILE
10382 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10383 	    "unveil", NULL) == -1)
10384 		err(1, "pledge");
10385 #endif
10386 	cwd = getcwd(NULL, 0);
10387 	if (cwd == NULL) {
10388 		error = got_error_from_errno("getcwd");
10389 		goto done;
10390 	}
10391 
10392 	error = got_worktree_open(&worktree, cwd);
10393 	if (error) {
10394 		if (error->code == GOT_ERR_NOT_WORKTREE)
10395 			error = wrap_not_worktree_error(error, "integrate",
10396 			    cwd);
10397 		goto done;
10398 	}
10399 
10400 	error = check_rebase_or_histedit_in_progress(worktree);
10401 	if (error)
10402 		goto done;
10403 
10404 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10405 	    NULL);
10406 	if (error != NULL)
10407 		goto done;
10408 
10409 	error = apply_unveil(got_repo_get_path(repo), 0,
10410 	    got_worktree_get_root_path(worktree));
10411 	if (error)
10412 		goto done;
10413 
10414 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
10415 		error = got_error_from_errno("asprintf");
10416 		goto done;
10417 	}
10418 
10419 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
10420 	    &base_branch_ref, worktree, refname, repo);
10421 	if (error)
10422 		goto done;
10423 
10424 	refname = strdup(got_ref_get_name(branch_ref));
10425 	if (refname == NULL) {
10426 		error = got_error_from_errno("strdup");
10427 		got_worktree_integrate_abort(worktree, fileindex, repo,
10428 		    branch_ref, base_branch_ref);
10429 		goto done;
10430 	}
10431 	base_refname = strdup(got_ref_get_name(base_branch_ref));
10432 	if (base_refname == NULL) {
10433 		error = got_error_from_errno("strdup");
10434 		got_worktree_integrate_abort(worktree, fileindex, repo,
10435 		    branch_ref, base_branch_ref);
10436 		goto done;
10437 	}
10438 
10439 	error = got_ref_resolve(&commit_id, repo, branch_ref);
10440 	if (error)
10441 		goto done;
10442 
10443 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
10444 	if (error)
10445 		goto done;
10446 
10447 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
10448 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
10449 		    "specified branch has already been integrated");
10450 		got_worktree_integrate_abort(worktree, fileindex, repo,
10451 		    branch_ref, base_branch_ref);
10452 		goto done;
10453 	}
10454 
10455 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
10456 	if (error) {
10457 		if (error->code == GOT_ERR_ANCESTRY)
10458 			error = got_error(GOT_ERR_REBASE_REQUIRED);
10459 		got_worktree_integrate_abort(worktree, fileindex, repo,
10460 		    branch_ref, base_branch_ref);
10461 		goto done;
10462 	}
10463 
10464 	memset(&upa, 0, sizeof(upa));
10465 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
10466 	    branch_ref, base_branch_ref, update_progress, &upa,
10467 	    check_cancelled, NULL);
10468 	if (error)
10469 		goto done;
10470 
10471 	printf("Integrated %s into %s\n", refname, base_refname);
10472 	print_update_progress_stats(&upa);
10473 done:
10474 	if (repo) {
10475 		const struct got_error *close_err = got_repo_close(repo);
10476 		if (error == NULL)
10477 			error = close_err;
10478 	}
10479 	if (worktree)
10480 		got_worktree_close(worktree);
10481 	free(cwd);
10482 	free(base_commit_id);
10483 	free(commit_id);
10484 	free(refname);
10485 	free(base_refname);
10486 	return error;
10487 }
10488 
10489 __dead static void
10490 usage_stage(void)
10491 {
10492 	fprintf(stderr, "usage: %s stage [-l] | [-p] [-F response-script] "
10493 	    "[-S] [file-path ...]\n",
10494 	    getprogname());
10495 	exit(1);
10496 }
10497 
10498 static const struct got_error *
10499 print_stage(void *arg, unsigned char status, unsigned char staged_status,
10500     const char *path, struct got_object_id *blob_id,
10501     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
10502     int dirfd, const char *de_name)
10503 {
10504 	const struct got_error *err = NULL;
10505 	char *id_str = NULL;
10506 
10507 	if (staged_status != GOT_STATUS_ADD &&
10508 	    staged_status != GOT_STATUS_MODIFY &&
10509 	    staged_status != GOT_STATUS_DELETE)
10510 		return NULL;
10511 
10512 	if (staged_status == GOT_STATUS_ADD ||
10513 	    staged_status == GOT_STATUS_MODIFY)
10514 		err = got_object_id_str(&id_str, staged_blob_id);
10515 	else
10516 		err = got_object_id_str(&id_str, blob_id);
10517 	if (err)
10518 		return err;
10519 
10520 	printf("%s %c %s\n", id_str, staged_status, path);
10521 	free(id_str);
10522 	return NULL;
10523 }
10524 
10525 static const struct got_error *
10526 cmd_stage(int argc, char *argv[])
10527 {
10528 	const struct got_error *error = NULL;
10529 	struct got_repository *repo = NULL;
10530 	struct got_worktree *worktree = NULL;
10531 	char *cwd = NULL;
10532 	struct got_pathlist_head paths;
10533 	struct got_pathlist_entry *pe;
10534 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
10535 	FILE *patch_script_file = NULL;
10536 	const char *patch_script_path = NULL;
10537 	struct choose_patch_arg cpa;
10538 
10539 	TAILQ_INIT(&paths);
10540 
10541 	while ((ch = getopt(argc, argv, "lpF:S")) != -1) {
10542 		switch (ch) {
10543 		case 'l':
10544 			list_stage = 1;
10545 			break;
10546 		case 'p':
10547 			pflag = 1;
10548 			break;
10549 		case 'F':
10550 			patch_script_path = optarg;
10551 			break;
10552 		case 'S':
10553 			allow_bad_symlinks = 1;
10554 			break;
10555 		default:
10556 			usage_stage();
10557 			/* NOTREACHED */
10558 		}
10559 	}
10560 
10561 	argc -= optind;
10562 	argv += optind;
10563 
10564 #ifndef PROFILE
10565 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10566 	    "unveil", NULL) == -1)
10567 		err(1, "pledge");
10568 #endif
10569 	if (list_stage && (pflag || patch_script_path))
10570 		errx(1, "-l option cannot be used with other options");
10571 	if (patch_script_path && !pflag)
10572 		errx(1, "-F option can only be used together with -p option");
10573 
10574 	cwd = getcwd(NULL, 0);
10575 	if (cwd == NULL) {
10576 		error = got_error_from_errno("getcwd");
10577 		goto done;
10578 	}
10579 
10580 	error = got_worktree_open(&worktree, cwd);
10581 	if (error) {
10582 		if (error->code == GOT_ERR_NOT_WORKTREE)
10583 			error = wrap_not_worktree_error(error, "stage", cwd);
10584 		goto done;
10585 	}
10586 
10587 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10588 	    NULL);
10589 	if (error != NULL)
10590 		goto done;
10591 
10592 	if (patch_script_path) {
10593 		patch_script_file = fopen(patch_script_path, "r");
10594 		if (patch_script_file == NULL) {
10595 			error = got_error_from_errno2("fopen",
10596 			    patch_script_path);
10597 			goto done;
10598 		}
10599 	}
10600 	error = apply_unveil(got_repo_get_path(repo), 0,
10601 	    got_worktree_get_root_path(worktree));
10602 	if (error)
10603 		goto done;
10604 
10605 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
10606 	if (error)
10607 		goto done;
10608 
10609 	if (list_stage)
10610 		error = got_worktree_status(worktree, &paths, repo, 0,
10611 		    print_stage, NULL, check_cancelled, NULL);
10612 	else {
10613 		cpa.patch_script_file = patch_script_file;
10614 		cpa.action = "stage";
10615 		error = got_worktree_stage(worktree, &paths,
10616 		    pflag ? NULL : print_status, NULL,
10617 		    pflag ? choose_patch : NULL, &cpa,
10618 		    allow_bad_symlinks, repo);
10619 	}
10620 done:
10621 	if (patch_script_file && fclose(patch_script_file) == EOF &&
10622 	    error == NULL)
10623 		error = got_error_from_errno2("fclose", patch_script_path);
10624 	if (repo) {
10625 		const struct got_error *close_err = got_repo_close(repo);
10626 		if (error == NULL)
10627 			error = close_err;
10628 	}
10629 	if (worktree)
10630 		got_worktree_close(worktree);
10631 	TAILQ_FOREACH(pe, &paths, entry)
10632 		free((char *)pe->path);
10633 	got_pathlist_free(&paths);
10634 	free(cwd);
10635 	return error;
10636 }
10637 
10638 __dead static void
10639 usage_unstage(void)
10640 {
10641 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
10642 	    "[file-path ...]\n",
10643 	    getprogname());
10644 	exit(1);
10645 }
10646 
10647 
10648 static const struct got_error *
10649 cmd_unstage(int argc, char *argv[])
10650 {
10651 	const struct got_error *error = NULL;
10652 	struct got_repository *repo = NULL;
10653 	struct got_worktree *worktree = NULL;
10654 	char *cwd = NULL;
10655 	struct got_pathlist_head paths;
10656 	struct got_pathlist_entry *pe;
10657 	int ch, pflag = 0;
10658 	struct got_update_progress_arg upa;
10659 	FILE *patch_script_file = NULL;
10660 	const char *patch_script_path = NULL;
10661 	struct choose_patch_arg cpa;
10662 
10663 	TAILQ_INIT(&paths);
10664 
10665 	while ((ch = getopt(argc, argv, "pF:")) != -1) {
10666 		switch (ch) {
10667 		case 'p':
10668 			pflag = 1;
10669 			break;
10670 		case 'F':
10671 			patch_script_path = optarg;
10672 			break;
10673 		default:
10674 			usage_unstage();
10675 			/* NOTREACHED */
10676 		}
10677 	}
10678 
10679 	argc -= optind;
10680 	argv += optind;
10681 
10682 #ifndef PROFILE
10683 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10684 	    "unveil", NULL) == -1)
10685 		err(1, "pledge");
10686 #endif
10687 	if (patch_script_path && !pflag)
10688 		errx(1, "-F option can only be used together with -p option");
10689 
10690 	cwd = getcwd(NULL, 0);
10691 	if (cwd == NULL) {
10692 		error = got_error_from_errno("getcwd");
10693 		goto done;
10694 	}
10695 
10696 	error = got_worktree_open(&worktree, cwd);
10697 	if (error) {
10698 		if (error->code == GOT_ERR_NOT_WORKTREE)
10699 			error = wrap_not_worktree_error(error, "unstage", cwd);
10700 		goto done;
10701 	}
10702 
10703 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10704 	    NULL);
10705 	if (error != NULL)
10706 		goto done;
10707 
10708 	if (patch_script_path) {
10709 		patch_script_file = fopen(patch_script_path, "r");
10710 		if (patch_script_file == NULL) {
10711 			error = got_error_from_errno2("fopen",
10712 			    patch_script_path);
10713 			goto done;
10714 		}
10715 	}
10716 
10717 	error = apply_unveil(got_repo_get_path(repo), 0,
10718 	    got_worktree_get_root_path(worktree));
10719 	if (error)
10720 		goto done;
10721 
10722 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
10723 	if (error)
10724 		goto done;
10725 
10726 	cpa.patch_script_file = patch_script_file;
10727 	cpa.action = "unstage";
10728 	memset(&upa, 0, sizeof(upa));
10729 	error = got_worktree_unstage(worktree, &paths, update_progress,
10730 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
10731 	if (!error)
10732 		print_update_progress_stats(&upa);
10733 done:
10734 	if (patch_script_file && fclose(patch_script_file) == EOF &&
10735 	    error == NULL)
10736 		error = got_error_from_errno2("fclose", patch_script_path);
10737 	if (repo) {
10738 		const struct got_error *close_err = got_repo_close(repo);
10739 		if (error == NULL)
10740 			error = close_err;
10741 	}
10742 	if (worktree)
10743 		got_worktree_close(worktree);
10744 	TAILQ_FOREACH(pe, &paths, entry)
10745 		free((char *)pe->path);
10746 	got_pathlist_free(&paths);
10747 	free(cwd);
10748 	return error;
10749 }
10750 
10751 __dead static void
10752 usage_cat(void)
10753 {
10754 	fprintf(stderr, "usage: %s cat [-r repository ] [ -c commit ] [ -P ] "
10755 	    "arg1 [arg2 ...]\n", getprogname());
10756 	exit(1);
10757 }
10758 
10759 static const struct got_error *
10760 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
10761 {
10762 	const struct got_error *err;
10763 	struct got_blob_object *blob;
10764 
10765 	err = got_object_open_as_blob(&blob, repo, id, 8192);
10766 	if (err)
10767 		return err;
10768 
10769 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
10770 	got_object_blob_close(blob);
10771 	return err;
10772 }
10773 
10774 static const struct got_error *
10775 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
10776 {
10777 	const struct got_error *err;
10778 	struct got_tree_object *tree;
10779 	int nentries, i;
10780 
10781 	err = got_object_open_as_tree(&tree, repo, id);
10782 	if (err)
10783 		return err;
10784 
10785 	nentries = got_object_tree_get_nentries(tree);
10786 	for (i = 0; i < nentries; i++) {
10787 		struct got_tree_entry *te;
10788 		char *id_str;
10789 		if (sigint_received || sigpipe_received)
10790 			break;
10791 		te = got_object_tree_get_entry(tree, i);
10792 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
10793 		if (err)
10794 			break;
10795 		fprintf(outfile, "%s %.7o %s\n", id_str,
10796 		    got_tree_entry_get_mode(te),
10797 		    got_tree_entry_get_name(te));
10798 		free(id_str);
10799 	}
10800 
10801 	got_object_tree_close(tree);
10802 	return err;
10803 }
10804 
10805 static const struct got_error *
10806 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
10807 {
10808 	const struct got_error *err;
10809 	struct got_commit_object *commit;
10810 	const struct got_object_id_queue *parent_ids;
10811 	struct got_object_qid *pid;
10812 	char *id_str = NULL;
10813 	const char *logmsg = NULL;
10814 
10815 	err = got_object_open_as_commit(&commit, repo, id);
10816 	if (err)
10817 		return err;
10818 
10819 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
10820 	if (err)
10821 		goto done;
10822 
10823 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
10824 	parent_ids = got_object_commit_get_parent_ids(commit);
10825 	fprintf(outfile, "numparents %d\n",
10826 	    got_object_commit_get_nparents(commit));
10827 	STAILQ_FOREACH(pid, parent_ids, entry) {
10828 		char *pid_str;
10829 		err = got_object_id_str(&pid_str, pid->id);
10830 		if (err)
10831 			goto done;
10832 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
10833 		free(pid_str);
10834 	}
10835 	fprintf(outfile, "%s%s %lld +0000\n", GOT_COMMIT_LABEL_AUTHOR,
10836 	    got_object_commit_get_author(commit),
10837 	    (long long)got_object_commit_get_author_time(commit));
10838 
10839 	fprintf(outfile, "%s%s %lld +0000\n", GOT_COMMIT_LABEL_COMMITTER,
10840 	    got_object_commit_get_author(commit),
10841 	    (long long)got_object_commit_get_committer_time(commit));
10842 
10843 	logmsg = got_object_commit_get_logmsg_raw(commit);
10844 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
10845 	fprintf(outfile, "%s", logmsg);
10846 done:
10847 	free(id_str);
10848 	got_object_commit_close(commit);
10849 	return err;
10850 }
10851 
10852 static const struct got_error *
10853 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
10854 {
10855 	const struct got_error *err;
10856 	struct got_tag_object *tag;
10857 	char *id_str = NULL;
10858 	const char *tagmsg = NULL;
10859 
10860 	err = got_object_open_as_tag(&tag, repo, id);
10861 	if (err)
10862 		return err;
10863 
10864 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
10865 	if (err)
10866 		goto done;
10867 
10868 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
10869 
10870 	switch (got_object_tag_get_object_type(tag)) {
10871 	case GOT_OBJ_TYPE_BLOB:
10872 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
10873 		    GOT_OBJ_LABEL_BLOB);
10874 		break;
10875 	case GOT_OBJ_TYPE_TREE:
10876 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
10877 		    GOT_OBJ_LABEL_TREE);
10878 		break;
10879 	case GOT_OBJ_TYPE_COMMIT:
10880 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
10881 		    GOT_OBJ_LABEL_COMMIT);
10882 		break;
10883 	case GOT_OBJ_TYPE_TAG:
10884 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
10885 		    GOT_OBJ_LABEL_TAG);
10886 		break;
10887 	default:
10888 		break;
10889 	}
10890 
10891 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
10892 	    got_object_tag_get_name(tag));
10893 
10894 	fprintf(outfile, "%s%s %lld +0000\n", GOT_TAG_LABEL_TAGGER,
10895 	    got_object_tag_get_tagger(tag),
10896 	    (long long)got_object_tag_get_tagger_time(tag));
10897 
10898 	tagmsg = got_object_tag_get_message(tag);
10899 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
10900 	fprintf(outfile, "%s", tagmsg);
10901 done:
10902 	free(id_str);
10903 	got_object_tag_close(tag);
10904 	return err;
10905 }
10906 
10907 static const struct got_error *
10908 cmd_cat(int argc, char *argv[])
10909 {
10910 	const struct got_error *error;
10911 	struct got_repository *repo = NULL;
10912 	struct got_worktree *worktree = NULL;
10913 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
10914 	const char *commit_id_str = NULL;
10915 	struct got_object_id *id = NULL, *commit_id = NULL;
10916 	int ch, obj_type, i, force_path = 0;
10917 	struct got_reflist_head refs;
10918 
10919 	TAILQ_INIT(&refs);
10920 
10921 #ifndef PROFILE
10922 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
10923 	    NULL) == -1)
10924 		err(1, "pledge");
10925 #endif
10926 
10927 	while ((ch = getopt(argc, argv, "c:r:P")) != -1) {
10928 		switch (ch) {
10929 		case 'c':
10930 			commit_id_str = optarg;
10931 			break;
10932 		case 'r':
10933 			repo_path = realpath(optarg, NULL);
10934 			if (repo_path == NULL)
10935 				return got_error_from_errno2("realpath",
10936 				    optarg);
10937 			got_path_strip_trailing_slashes(repo_path);
10938 			break;
10939 		case 'P':
10940 			force_path = 1;
10941 			break;
10942 		default:
10943 			usage_cat();
10944 			/* NOTREACHED */
10945 		}
10946 	}
10947 
10948 	argc -= optind;
10949 	argv += optind;
10950 
10951 	cwd = getcwd(NULL, 0);
10952 	if (cwd == NULL) {
10953 		error = got_error_from_errno("getcwd");
10954 		goto done;
10955 	}
10956 	error = got_worktree_open(&worktree, cwd);
10957 	if (error && error->code != GOT_ERR_NOT_WORKTREE)
10958 		goto done;
10959 	if (worktree) {
10960 		if (repo_path == NULL) {
10961 			repo_path = strdup(
10962 			    got_worktree_get_repo_path(worktree));
10963 			if (repo_path == NULL) {
10964 				error = got_error_from_errno("strdup");
10965 				goto done;
10966 			}
10967 		}
10968 	}
10969 
10970 	if (repo_path == NULL) {
10971 		repo_path = getcwd(NULL, 0);
10972 		if (repo_path == NULL)
10973 			return got_error_from_errno("getcwd");
10974 	}
10975 
10976 	error = got_repo_open(&repo, repo_path, NULL);
10977 	free(repo_path);
10978 	if (error != NULL)
10979 		goto done;
10980 
10981 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
10982 	if (error)
10983 		goto done;
10984 
10985 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
10986 	if (error)
10987 		goto done;
10988 
10989 	if (commit_id_str == NULL)
10990 		commit_id_str = GOT_REF_HEAD;
10991 	error = got_repo_match_object_id(&commit_id, NULL,
10992 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
10993 	if (error)
10994 		goto done;
10995 
10996 	for (i = 0; i < argc; i++) {
10997 		if (force_path) {
10998 			error = got_object_id_by_path(&id, repo, commit_id,
10999 			    argv[i]);
11000 			if (error)
11001 				break;
11002 		} else {
11003 			error = got_repo_match_object_id(&id, &label, argv[i],
11004 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
11005 			    repo);
11006 			if (error) {
11007 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
11008 				    error->code != GOT_ERR_NOT_REF)
11009 					break;
11010 				error = got_object_id_by_path(&id, repo,
11011 				    commit_id, argv[i]);
11012 				if (error)
11013 					break;
11014 			}
11015 		}
11016 
11017 		error = got_object_get_type(&obj_type, repo, id);
11018 		if (error)
11019 			break;
11020 
11021 		switch (obj_type) {
11022 		case GOT_OBJ_TYPE_BLOB:
11023 			error = cat_blob(id, repo, stdout);
11024 			break;
11025 		case GOT_OBJ_TYPE_TREE:
11026 			error = cat_tree(id, repo, stdout);
11027 			break;
11028 		case GOT_OBJ_TYPE_COMMIT:
11029 			error = cat_commit(id, repo, stdout);
11030 			break;
11031 		case GOT_OBJ_TYPE_TAG:
11032 			error = cat_tag(id, repo, stdout);
11033 			break;
11034 		default:
11035 			error = got_error(GOT_ERR_OBJ_TYPE);
11036 			break;
11037 		}
11038 		if (error)
11039 			break;
11040 		free(label);
11041 		label = NULL;
11042 		free(id);
11043 		id = NULL;
11044 	}
11045 done:
11046 	free(label);
11047 	free(id);
11048 	free(commit_id);
11049 	if (worktree)
11050 		got_worktree_close(worktree);
11051 	if (repo) {
11052 		const struct got_error *close_err = got_repo_close(repo);
11053 		if (error == NULL)
11054 			error = close_err;
11055 	}
11056 	got_ref_list_free(&refs);
11057 	return error;
11058 }
11059 
11060 __dead static void
11061 usage_info(void)
11062 {
11063 	fprintf(stderr, "usage: %s info [path ...]\n",
11064 	    getprogname());
11065 	exit(1);
11066 }
11067 
11068 static const struct got_error *
11069 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
11070     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
11071     struct got_object_id *commit_id)
11072 {
11073 	const struct got_error *err = NULL;
11074 	char *id_str = NULL;
11075 	char datebuf[128];
11076 	struct tm mytm, *tm;
11077 	struct got_pathlist_head *paths = arg;
11078 	struct got_pathlist_entry *pe;
11079 
11080 	/*
11081 	 * Clear error indication from any of the path arguments which
11082 	 * would cause this file index entry to be displayed.
11083 	 */
11084 	TAILQ_FOREACH(pe, paths, entry) {
11085 		if (got_path_cmp(path, pe->path, strlen(path),
11086 		    pe->path_len) == 0 ||
11087 		    got_path_is_child(path, pe->path, pe->path_len))
11088 			pe->data = NULL; /* no error */
11089 	}
11090 
11091 	printf(GOT_COMMIT_SEP_STR);
11092 	if (S_ISLNK(mode))
11093 		printf("symlink: %s\n", path);
11094 	else if (S_ISREG(mode)) {
11095 		printf("file: %s\n", path);
11096 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
11097 	} else if (S_ISDIR(mode))
11098 		printf("directory: %s\n", path);
11099 	else
11100 		printf("something: %s\n", path);
11101 
11102 	tm = localtime_r(&mtime, &mytm);
11103 	if (tm == NULL)
11104 		return NULL;
11105 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
11106 		return got_error(GOT_ERR_NO_SPACE);
11107 	printf("timestamp: %s\n", datebuf);
11108 
11109 	if (blob_id) {
11110 		err = got_object_id_str(&id_str, blob_id);
11111 		if (err)
11112 			return err;
11113 		printf("based on blob: %s\n", id_str);
11114 		free(id_str);
11115 	}
11116 
11117 	if (staged_blob_id) {
11118 		err = got_object_id_str(&id_str, staged_blob_id);
11119 		if (err)
11120 			return err;
11121 		printf("based on staged blob: %s\n", id_str);
11122 		free(id_str);
11123 	}
11124 
11125 	if (commit_id) {
11126 		err = got_object_id_str(&id_str, commit_id);
11127 		if (err)
11128 			return err;
11129 		printf("based on commit: %s\n", id_str);
11130 		free(id_str);
11131 	}
11132 
11133 	return NULL;
11134 }
11135 
11136 static const struct got_error *
11137 cmd_info(int argc, char *argv[])
11138 {
11139 	const struct got_error *error = NULL;
11140 	struct got_worktree *worktree = NULL;
11141 	char *cwd = NULL, *id_str = NULL;
11142 	struct got_pathlist_head paths;
11143 	struct got_pathlist_entry *pe;
11144 	char *uuidstr = NULL;
11145 	int ch, show_files = 0;
11146 
11147 	TAILQ_INIT(&paths);
11148 
11149 	while ((ch = getopt(argc, argv, "")) != -1) {
11150 		switch (ch) {
11151 		default:
11152 			usage_info();
11153 			/* NOTREACHED */
11154 		}
11155 	}
11156 
11157 	argc -= optind;
11158 	argv += optind;
11159 
11160 #ifndef PROFILE
11161 	if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
11162 	    NULL) == -1)
11163 		err(1, "pledge");
11164 #endif
11165 	cwd = getcwd(NULL, 0);
11166 	if (cwd == NULL) {
11167 		error = got_error_from_errno("getcwd");
11168 		goto done;
11169 	}
11170 
11171 	error = got_worktree_open(&worktree, cwd);
11172 	if (error) {
11173 		if (error->code == GOT_ERR_NOT_WORKTREE)
11174 			error = wrap_not_worktree_error(error, "info", cwd);
11175 		goto done;
11176 	}
11177 
11178 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
11179 	if (error)
11180 		goto done;
11181 
11182 	if (argc >= 1) {
11183 		error = get_worktree_paths_from_argv(&paths, argc, argv,
11184 		    worktree);
11185 		if (error)
11186 			goto done;
11187 		show_files = 1;
11188 	}
11189 
11190 	error = got_object_id_str(&id_str,
11191 	    got_worktree_get_base_commit_id(worktree));
11192 	if (error)
11193 		goto done;
11194 
11195 	error = got_worktree_get_uuid(&uuidstr, worktree);
11196 	if (error)
11197 		goto done;
11198 
11199 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
11200 	printf("work tree base commit: %s\n", id_str);
11201 	printf("work tree path prefix: %s\n",
11202 	    got_worktree_get_path_prefix(worktree));
11203 	printf("work tree branch reference: %s\n",
11204 	    got_worktree_get_head_ref_name(worktree));
11205 	printf("work tree UUID: %s\n", uuidstr);
11206 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
11207 
11208 	if (show_files) {
11209 		struct got_pathlist_entry *pe;
11210 		TAILQ_FOREACH(pe, &paths, entry) {
11211 			if (pe->path_len == 0)
11212 				continue;
11213 			/*
11214 			 * Assume this path will fail. This will be corrected
11215 			 * in print_path_info() in case the path does suceeed.
11216 			 */
11217 			pe->data = (void *)got_error_path(pe->path,
11218 			    GOT_ERR_BAD_PATH);
11219 		}
11220 		error = got_worktree_path_info(worktree, &paths,
11221 		    print_path_info, &paths, check_cancelled, NULL);
11222 		if (error)
11223 			goto done;
11224 		TAILQ_FOREACH(pe, &paths, entry) {
11225 			if (pe->data != NULL) {
11226 				error = pe->data; /* bad path */
11227 				break;
11228 			}
11229 		}
11230 	}
11231 done:
11232 	TAILQ_FOREACH(pe, &paths, entry)
11233 		free((char *)pe->path);
11234 	got_pathlist_free(&paths);
11235 	free(cwd);
11236 	free(id_str);
11237 	free(uuidstr);
11238 	return error;
11239 }