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/wait.h>
23 
24 #include <err.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #include <limits.h>
28 #include <locale.h>
29 #include <ctype.h>
30 #include <signal.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <unistd.h>
35 #include <libgen.h>
36 #include <time.h>
37 #include <paths.h>
38 #include <regex.h>
39 #include <getopt.h>
40 #include <util.h>
41 
42 #include "got_version.h"
43 #include "got_error.h"
44 #include "got_object.h"
45 #include "got_reference.h"
46 #include "got_repository.h"
47 #include "got_path.h"
48 #include "got_cancel.h"
49 #include "got_worktree.h"
50 #include "got_diff.h"
51 #include "got_commit_graph.h"
52 #include "got_fetch.h"
53 #include "got_send.h"
54 #include "got_blame.h"
55 #include "got_privsep.h"
56 #include "got_opentemp.h"
57 #include "got_gotconfig.h"
58 #include "got_dial.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_merge(void);
113 __dead static void	usage_stage(void);
114 __dead static void	usage_unstage(void);
115 __dead static void	usage_cat(void);
116 __dead static void	usage_info(void);
117 
118 static const struct got_error*		cmd_init(int, char *[]);
119 static const struct got_error*		cmd_import(int, char *[]);
120 static const struct got_error*		cmd_clone(int, char *[]);
121 static const struct got_error*		cmd_fetch(int, char *[]);
122 static const struct got_error*		cmd_checkout(int, char *[]);
123 static const struct got_error*		cmd_update(int, char *[]);
124 static const struct got_error*		cmd_log(int, char *[]);
125 static const struct got_error*		cmd_diff(int, char *[]);
126 static const struct got_error*		cmd_blame(int, char *[]);
127 static const struct got_error*		cmd_tree(int, char *[]);
128 static const struct got_error*		cmd_status(int, char *[]);
129 static const struct got_error*		cmd_ref(int, char *[]);
130 static const struct got_error*		cmd_branch(int, char *[]);
131 static const struct got_error*		cmd_tag(int, char *[]);
132 static const struct got_error*		cmd_add(int, char *[]);
133 static const struct got_error*		cmd_remove(int, char *[]);
134 static const struct got_error*		cmd_revert(int, char *[]);
135 static const struct got_error*		cmd_commit(int, char *[]);
136 static const struct got_error*		cmd_send(int, char *[]);
137 static const struct got_error*		cmd_cherrypick(int, char *[]);
138 static const struct got_error*		cmd_backout(int, char *[]);
139 static const struct got_error*		cmd_rebase(int, char *[]);
140 static const struct got_error*		cmd_histedit(int, char *[]);
141 static const struct got_error*		cmd_integrate(int, char *[]);
142 static const struct got_error*		cmd_merge(int, char *[]);
143 static const struct got_error*		cmd_stage(int, char *[]);
144 static const struct got_error*		cmd_unstage(int, char *[]);
145 static const struct got_error*		cmd_cat(int, char *[]);
146 static const struct got_error*		cmd_info(int, char *[]);
147 
148 static struct got_cmd got_commands[] = {
149 	{ "init",	cmd_init,	usage_init,	"" },
150 	{ "import",	cmd_import,	usage_import,	"im" },
151 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
152 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
153 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
154 	{ "update",	cmd_update,	usage_update,	"up" },
155 	{ "log",	cmd_log,	usage_log,	"" },
156 	{ "diff",	cmd_diff,	usage_diff,	"di" },
157 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
158 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
159 	{ "status",	cmd_status,	usage_status,	"st" },
160 	{ "ref",	cmd_ref,	usage_ref,	"" },
161 	{ "branch",	cmd_branch,	usage_branch,	"br" },
162 	{ "tag",	cmd_tag,	usage_tag,	"" },
163 	{ "add",	cmd_add,	usage_add,	"" },
164 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
165 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
166 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
167 	{ "send",	cmd_send,	usage_send,	"se" },
168 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
169 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
170 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
171 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
172 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
173 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
174 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
175 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
176 	{ "cat",	cmd_cat,	usage_cat,	"" },
177 	{ "info",	cmd_info,	usage_info,	"" },
178 };
179 
180 static void
181 list_commands(FILE *fp)
182 {
183 	size_t i;
184 
185 	fprintf(fp, "commands:");
186 	for (i = 0; i < nitems(got_commands); i++) {
187 		struct got_cmd *cmd = &got_commands[i];
188 		fprintf(fp, " %s", cmd->cmd_name);
189 	}
190 	fputc('\n', fp);
191 }
192 
193 __dead static void
194 option_conflict(char a, char b)
195 {
196 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
197 }
198 
199 int
200 main(int argc, char *argv[])
201 {
202 	struct got_cmd *cmd;
203 	size_t i;
204 	int ch;
205 	int hflag = 0, Vflag = 0;
206 	static struct option longopts[] = {
207 	    { "version", no_argument, NULL, 'V' },
208 	    { NULL, 0, NULL, 0 }
209 	};
210 
211 	setlocale(LC_CTYPE, "");
212 
213 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
214 		switch (ch) {
215 		case 'h':
216 			hflag = 1;
217 			break;
218 		case 'V':
219 			Vflag = 1;
220 			break;
221 		default:
222 			usage(hflag, 1);
223 			/* NOTREACHED */
224 		}
225 	}
226 
227 	argc -= optind;
228 	argv += optind;
229 	optind = 1;
230 	optreset = 1;
231 
232 	if (Vflag) {
233 		got_version_print_str();
234 		return 0;
235 	}
236 
237 	if (argc <= 0)
238 		usage(hflag, hflag ? 0 : 1);
239 
240 	signal(SIGINT, catch_sigint);
241 	signal(SIGPIPE, catch_sigpipe);
242 
243 	for (i = 0; i < nitems(got_commands); i++) {
244 		const struct got_error *error;
245 
246 		cmd = &got_commands[i];
247 
248 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
249 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
250 			continue;
251 
252 		if (hflag)
253 			got_commands[i].cmd_usage();
254 
255 		error = got_commands[i].cmd_main(argc, argv);
256 		if (error && error->code != GOT_ERR_CANCELLED &&
257 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
258 		    !(sigpipe_received &&
259 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
260 		    !(sigint_received &&
261 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
262 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
263 			return 1;
264 		}
265 
266 		return 0;
267 	}
268 
269 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
270 	list_commands(stderr);
271 	return 1;
272 }
273 
274 __dead static void
275 usage(int hflag, int status)
276 {
277 	FILE *fp = (status == 0) ? stdout : stderr;
278 
279 	fprintf(fp, "usage: %s [-h] [-V | --version] command [arg ...]\n",
280 	    getprogname());
281 	if (hflag)
282 		list_commands(fp);
283 	exit(status);
284 }
285 
286 static const struct got_error *
287 get_editor(char **abspath)
288 {
289 	const struct got_error *err = NULL;
290 	const char *editor;
291 
292 	*abspath = NULL;
293 
294 	editor = getenv("VISUAL");
295 	if (editor == NULL)
296 		editor = getenv("EDITOR");
297 
298 	if (editor) {
299 		err = got_path_find_prog(abspath, editor);
300 		if (err)
301 			return err;
302 	}
303 
304 	if (*abspath == NULL) {
305 		*abspath = strdup("/bin/ed");
306 		if (*abspath == NULL)
307 			return got_error_from_errno("strdup");
308 	}
309 
310 	return NULL;
311 }
312 
313 static const struct got_error *
314 apply_unveil(const char *repo_path, int repo_read_only,
315     const char *worktree_path)
316 {
317 	const struct got_error *err;
318 
319 #ifdef PROFILE
320 	if (unveil("gmon.out", "rwc") != 0)
321 		return got_error_from_errno2("unveil", "gmon.out");
322 #endif
323 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
324 		return got_error_from_errno2("unveil", repo_path);
325 
326 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
327 		return got_error_from_errno2("unveil", worktree_path);
328 
329 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
330 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
331 
332 	err = got_privsep_unveil_exec_helpers();
333 	if (err != NULL)
334 		return err;
335 
336 	if (unveil(NULL, NULL) != 0)
337 		return got_error_from_errno("unveil");
338 
339 	return NULL;
340 }
341 
342 __dead static void
343 usage_init(void)
344 {
345 	fprintf(stderr, "usage: %s init repository-path\n", getprogname());
346 	exit(1);
347 }
348 
349 static const struct got_error *
350 cmd_init(int argc, char *argv[])
351 {
352 	const struct got_error *error = NULL;
353 	char *repo_path = NULL;
354 	int ch;
355 
356 	while ((ch = getopt(argc, argv, "")) != -1) {
357 		switch (ch) {
358 		default:
359 			usage_init();
360 			/* NOTREACHED */
361 		}
362 	}
363 
364 	argc -= optind;
365 	argv += optind;
366 
367 #ifndef PROFILE
368 	if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
369 		err(1, "pledge");
370 #endif
371 	if (argc != 1)
372 		usage_init();
373 
374 	repo_path = strdup(argv[0]);
375 	if (repo_path == NULL)
376 		return got_error_from_errno("strdup");
377 
378 	got_path_strip_trailing_slashes(repo_path);
379 
380 	error = got_path_mkdir(repo_path);
381 	if (error &&
382 	    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
383 		goto done;
384 
385 	error = apply_unveil(repo_path, 0, NULL);
386 	if (error)
387 		goto done;
388 
389 	error = got_repo_init(repo_path);
390 done:
391 	free(repo_path);
392 	return error;
393 }
394 
395 __dead static void
396 usage_import(void)
397 {
398 	fprintf(stderr, "usage: %s import [-b branch] [-m message] "
399 	    "[-r repository-path] [-I pattern] path\n", getprogname());
400 	exit(1);
401 }
402 
403 int
404 spawn_editor(const char *editor, const char *file)
405 {
406 	pid_t pid;
407 	sig_t sighup, sigint, sigquit;
408 	int st = -1;
409 
410 	sighup = signal(SIGHUP, SIG_IGN);
411 	sigint = signal(SIGINT, SIG_IGN);
412 	sigquit = signal(SIGQUIT, SIG_IGN);
413 
414 	switch (pid = fork()) {
415 	case -1:
416 		goto doneediting;
417 	case 0:
418 		execl(editor, editor, file, (char *)NULL);
419 		_exit(127);
420 	}
421 
422 	while (waitpid(pid, &st, 0) == -1)
423 		if (errno != EINTR)
424 			break;
425 
426 doneediting:
427 	(void)signal(SIGHUP, sighup);
428 	(void)signal(SIGINT, sigint);
429 	(void)signal(SIGQUIT, sigquit);
430 
431 	if (!WIFEXITED(st)) {
432 		errno = EINTR;
433 		return -1;
434 	}
435 
436 	return WEXITSTATUS(st);
437 }
438 
439 static const struct got_error *
440 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
441     const char *initial_content, size_t initial_content_len,
442     int require_modification)
443 {
444 	const struct got_error *err = NULL;
445 	char *line = NULL;
446 	size_t linesize = 0;
447 	ssize_t linelen;
448 	struct stat st, st2;
449 	FILE *fp = NULL;
450 	size_t len, logmsg_len;
451 	char *initial_content_stripped = NULL, *buf = NULL, *s;
452 
453 	*logmsg = NULL;
454 
455 	if (stat(logmsg_path, &st) == -1)
456 		return got_error_from_errno2("stat", logmsg_path);
457 
458 	if (spawn_editor(editor, logmsg_path) == -1)
459 		return got_error_from_errno("failed spawning editor");
460 
461 	if (stat(logmsg_path, &st2) == -1)
462 		return got_error_from_errno("stat");
463 
464 	if (require_modification &&
465 	    st.st_mtime == st2.st_mtime && st.st_size == st2.st_size)
466 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
467 		    "no changes made to commit message, aborting");
468 
469 	/*
470 	 * Set up a stripped version of the initial content without comments
471 	 * and blank lines. We need this in order to check if the message
472 	 * has in fact been edited.
473 	 */
474 	initial_content_stripped = malloc(initial_content_len + 1);
475 	if (initial_content_stripped == NULL)
476 		return got_error_from_errno("malloc");
477 	initial_content_stripped[0] = '\0';
478 
479 	buf = strdup(initial_content);
480 	if (buf == NULL) {
481 		err = got_error_from_errno("strdup");
482 		goto done;
483 	}
484 	s = buf;
485 	len = 0;
486 	while ((line = strsep(&s, "\n")) != NULL) {
487 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
488 			continue; /* remove comments and leading empty lines */
489 		len = strlcat(initial_content_stripped, line,
490 		    initial_content_len + 1);
491 		if (len >= initial_content_len + 1) {
492 			err = got_error(GOT_ERR_NO_SPACE);
493 			goto done;
494 		}
495 	}
496 	while (len > 0 && initial_content_stripped[len - 1] == '\n') {
497 		initial_content_stripped[len - 1] = '\0';
498 		len--;
499 	}
500 
501 	logmsg_len = st2.st_size;
502 	*logmsg = malloc(logmsg_len + 1);
503 	if (*logmsg == NULL)
504 		return got_error_from_errno("malloc");
505 	(*logmsg)[0] = '\0';
506 
507 	fp = fopen(logmsg_path, "r");
508 	if (fp == NULL) {
509 		err = got_error_from_errno("fopen");
510 		goto done;
511 	}
512 
513 	len = 0;
514 	while ((linelen = getline(&line, &linesize, fp)) != -1) {
515 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
516 			continue; /* remove comments and leading empty lines */
517 		len = strlcat(*logmsg, line, logmsg_len + 1);
518 		if (len >= logmsg_len + 1) {
519 			err = got_error(GOT_ERR_NO_SPACE);
520 			goto done;
521 		}
522 	}
523 	free(line);
524 	if (ferror(fp)) {
525 		err = got_ferror(fp, GOT_ERR_IO);
526 		goto done;
527 	}
528 	while (len > 0 && (*logmsg)[len - 1] == '\n') {
529 		(*logmsg)[len - 1] = '\0';
530 		len--;
531 	}
532 
533 	if (len == 0) {
534 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
535 		    "commit message cannot be empty, aborting");
536 		goto done;
537 	}
538 	if (require_modification &&
539 	    strcmp(*logmsg, initial_content_stripped) == 0)
540 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
541 		    "no changes made to commit message, aborting");
542 done:
543 	free(initial_content_stripped);
544 	free(buf);
545 	if (fp && fclose(fp) == EOF && err == NULL)
546 		err = got_error_from_errno("fclose");
547 	if (err) {
548 		free(*logmsg);
549 		*logmsg = NULL;
550 	}
551 	return err;
552 }
553 
554 static const struct got_error *
555 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
556     const char *path_dir, const char *branch_name)
557 {
558 	char *initial_content = NULL;
559 	const struct got_error *err = NULL;
560 	int initial_content_len;
561 	int fd = -1;
562 
563 	initial_content_len = asprintf(&initial_content,
564 	    "\n# %s to be imported to branch %s\n", path_dir,
565 	    branch_name);
566 	if (initial_content_len == -1)
567 		return got_error_from_errno("asprintf");
568 
569 	err = got_opentemp_named_fd(logmsg_path, &fd,
570 	    GOT_TMPDIR_STR "/got-importmsg");
571 	if (err)
572 		goto done;
573 
574 	if (write(fd, initial_content, initial_content_len) == -1) {
575 		err = got_error_from_errno2("write", *logmsg_path);
576 		goto done;
577 	}
578 
579 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
580 	    initial_content_len, 1);
581 done:
582 	if (fd != -1 && close(fd) == -1 && err == NULL)
583 		err = got_error_from_errno2("close", *logmsg_path);
584 	free(initial_content);
585 	if (err) {
586 		free(*logmsg_path);
587 		*logmsg_path = NULL;
588 	}
589 	return err;
590 }
591 
592 static const struct got_error *
593 import_progress(void *arg, const char *path)
594 {
595 	printf("A  %s\n", path);
596 	return NULL;
597 }
598 
599 static const struct got_error *
600 get_author(char **author, struct got_repository *repo,
601     struct got_worktree *worktree)
602 {
603 	const struct got_error *err = NULL;
604 	const char *got_author = NULL, *name, *email;
605 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
606 
607 	*author = NULL;
608 
609 	if (worktree)
610 		worktree_conf = got_worktree_get_gotconfig(worktree);
611 	repo_conf = got_repo_get_gotconfig(repo);
612 
613 	/*
614 	 * Priority of potential author information sources, from most
615 	 * significant to least significant:
616 	 * 1) work tree's .got/got.conf file
617 	 * 2) repository's got.conf file
618 	 * 3) repository's git config file
619 	 * 4) environment variables
620 	 * 5) global git config files (in user's home directory or /etc)
621 	 */
622 
623 	if (worktree_conf)
624 		got_author = got_gotconfig_get_author(worktree_conf);
625 	if (got_author == NULL)
626 		got_author = got_gotconfig_get_author(repo_conf);
627 	if (got_author == NULL) {
628 		name = got_repo_get_gitconfig_author_name(repo);
629 		email = got_repo_get_gitconfig_author_email(repo);
630 		if (name && email) {
631 			if (asprintf(author, "%s <%s>", name, email) == -1)
632 				return got_error_from_errno("asprintf");
633 			return NULL;
634 		}
635 
636 		got_author = getenv("GOT_AUTHOR");
637 		if (got_author == NULL) {
638 			name = got_repo_get_global_gitconfig_author_name(repo);
639 			email = got_repo_get_global_gitconfig_author_email(
640 			    repo);
641 			if (name && email) {
642 				if (asprintf(author, "%s <%s>", name, email)
643 				    == -1)
644 					return got_error_from_errno("asprintf");
645 				return NULL;
646 			}
647 			/* TODO: Look up user in password database? */
648 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
649 		}
650 	}
651 
652 	*author = strdup(got_author);
653 	if (*author == NULL)
654 		return got_error_from_errno("strdup");
655 
656 	/*
657 	 * Really dumb email address check; we're only doing this to
658 	 * avoid git's object parser breaking on commits we create.
659 	 */
660 	while (*got_author && *got_author != '<')
661 		got_author++;
662 	if (*got_author != '<') {
663 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
664 		goto done;
665 	}
666 	while (*got_author && *got_author != '@')
667 		got_author++;
668 	if (*got_author != '@') {
669 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
670 		goto done;
671 	}
672 	while (*got_author && *got_author != '>')
673 		got_author++;
674 	if (*got_author != '>')
675 		err = got_error(GOT_ERR_COMMIT_NO_EMAIL);
676 done:
677 	if (err) {
678 		free(*author);
679 		*author = NULL;
680 	}
681 	return err;
682 }
683 
684 static const struct got_error *
685 get_gitconfig_path(char **gitconfig_path)
686 {
687 	const char *homedir = getenv("HOME");
688 
689 	*gitconfig_path = NULL;
690 	if (homedir) {
691 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
692 			return got_error_from_errno("asprintf");
693 
694 	}
695 	return NULL;
696 }
697 
698 static const struct got_error *
699 cmd_import(int argc, char *argv[])
700 {
701 	const struct got_error *error = NULL;
702 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
703 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
704 	const char *branch_name = "main";
705 	char *refname = NULL, *id_str = NULL, *logmsg_path = NULL;
706 	struct got_repository *repo = NULL;
707 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
708 	struct got_object_id *new_commit_id = NULL;
709 	int ch;
710 	struct got_pathlist_head ignores;
711 	struct got_pathlist_entry *pe;
712 	int preserve_logmsg = 0;
713 
714 	TAILQ_INIT(&ignores);
715 
716 	while ((ch = getopt(argc, argv, "b:m:r:I:")) != -1) {
717 		switch (ch) {
718 		case 'b':
719 			branch_name = optarg;
720 			break;
721 		case 'm':
722 			logmsg = strdup(optarg);
723 			if (logmsg == NULL) {
724 				error = got_error_from_errno("strdup");
725 				goto done;
726 			}
727 			break;
728 		case 'r':
729 			repo_path = realpath(optarg, NULL);
730 			if (repo_path == NULL) {
731 				error = got_error_from_errno2("realpath",
732 				    optarg);
733 				goto done;
734 			}
735 			break;
736 		case 'I':
737 			if (optarg[0] == '\0')
738 				break;
739 			error = got_pathlist_insert(&pe, &ignores, optarg,
740 			    NULL);
741 			if (error)
742 				goto done;
743 			break;
744 		default:
745 			usage_import();
746 			/* NOTREACHED */
747 		}
748 	}
749 
750 	argc -= optind;
751 	argv += optind;
752 
753 #ifndef PROFILE
754 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
755 	    "unveil",
756 	    NULL) == -1)
757 		err(1, "pledge");
758 #endif
759 	if (argc != 1)
760 		usage_import();
761 
762 	if (repo_path == NULL) {
763 		repo_path = getcwd(NULL, 0);
764 		if (repo_path == NULL)
765 			return got_error_from_errno("getcwd");
766 	}
767 	got_path_strip_trailing_slashes(repo_path);
768 	error = get_gitconfig_path(&gitconfig_path);
769 	if (error)
770 		goto done;
771 	error = got_repo_open(&repo, repo_path, gitconfig_path);
772 	if (error)
773 		goto done;
774 
775 	error = get_author(&author, repo, NULL);
776 	if (error)
777 		return error;
778 
779 	/*
780 	 * Don't let the user create a branch name with a leading '-'.
781 	 * While technically a valid reference name, this case is usually
782 	 * an unintended typo.
783 	 */
784 	if (branch_name[0] == '-')
785 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
786 
787 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
788 		error = got_error_from_errno("asprintf");
789 		goto done;
790 	}
791 
792 	error = got_ref_open(&branch_ref, repo, refname, 0);
793 	if (error) {
794 		if (error->code != GOT_ERR_NOT_REF)
795 			goto done;
796 	} else {
797 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
798 		    "import target branch already exists");
799 		goto done;
800 	}
801 
802 	path_dir = realpath(argv[0], NULL);
803 	if (path_dir == NULL) {
804 		error = got_error_from_errno2("realpath", argv[0]);
805 		goto done;
806 	}
807 	got_path_strip_trailing_slashes(path_dir);
808 
809 	/*
810 	 * unveil(2) traverses exec(2); if an editor is used we have
811 	 * to apply unveil after the log message has been written.
812 	 */
813 	if (logmsg == NULL || strlen(logmsg) == 0) {
814 		error = get_editor(&editor);
815 		if (error)
816 			goto done;
817 		free(logmsg);
818 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
819 		    path_dir, refname);
820 		if (error) {
821 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
822 			    logmsg_path != NULL)
823 				preserve_logmsg = 1;
824 			goto done;
825 		}
826 	}
827 
828 	if (unveil(path_dir, "r") != 0) {
829 		error = got_error_from_errno2("unveil", path_dir);
830 		if (logmsg_path)
831 			preserve_logmsg = 1;
832 		goto done;
833 	}
834 
835 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
836 	if (error) {
837 		if (logmsg_path)
838 			preserve_logmsg = 1;
839 		goto done;
840 	}
841 
842 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
843 	    author, &ignores, repo, import_progress, NULL);
844 	if (error) {
845 		if (logmsg_path)
846 			preserve_logmsg = 1;
847 		goto done;
848 	}
849 
850 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
851 	if (error) {
852 		if (logmsg_path)
853 			preserve_logmsg = 1;
854 		goto done;
855 	}
856 
857 	error = got_ref_write(branch_ref, repo);
858 	if (error) {
859 		if (logmsg_path)
860 			preserve_logmsg = 1;
861 		goto done;
862 	}
863 
864 	error = got_object_id_str(&id_str, new_commit_id);
865 	if (error) {
866 		if (logmsg_path)
867 			preserve_logmsg = 1;
868 		goto done;
869 	}
870 
871 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
872 	if (error) {
873 		if (error->code != GOT_ERR_NOT_REF) {
874 			if (logmsg_path)
875 				preserve_logmsg = 1;
876 			goto done;
877 		}
878 
879 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
880 		    branch_ref);
881 		if (error) {
882 			if (logmsg_path)
883 				preserve_logmsg = 1;
884 			goto done;
885 		}
886 
887 		error = got_ref_write(head_ref, repo);
888 		if (error) {
889 			if (logmsg_path)
890 				preserve_logmsg = 1;
891 			goto done;
892 		}
893 	}
894 
895 	printf("Created branch %s with commit %s\n",
896 	    got_ref_get_name(branch_ref), id_str);
897 done:
898 	if (preserve_logmsg) {
899 		fprintf(stderr, "%s: log message preserved in %s\n",
900 		    getprogname(), logmsg_path);
901 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
902 		error = got_error_from_errno2("unlink", logmsg_path);
903 	free(logmsg);
904 	free(logmsg_path);
905 	free(repo_path);
906 	free(editor);
907 	free(refname);
908 	free(new_commit_id);
909 	free(id_str);
910 	free(author);
911 	free(gitconfig_path);
912 	if (branch_ref)
913 		got_ref_close(branch_ref);
914 	if (head_ref)
915 		got_ref_close(head_ref);
916 	return error;
917 }
918 
919 __dead static void
920 usage_clone(void)
921 {
922 	fprintf(stderr, "usage: %s clone [-a] [-b branch] [-l] [-m] [-q] [-v] "
923 	    "[-R reference] repository-url [directory]\n", getprogname());
924 	exit(1);
925 }
926 
927 struct got_fetch_progress_arg {
928 	char last_scaled_size[FMT_SCALED_STRSIZE];
929 	int last_p_indexed;
930 	int last_p_resolved;
931 	int verbosity;
932 
933 	struct got_repository *repo;
934 
935 	int create_configs;
936 	int configs_created;
937 	struct {
938 		struct got_pathlist_head *symrefs;
939 		struct got_pathlist_head *wanted_branches;
940 		struct got_pathlist_head *wanted_refs;
941 		const char *proto;
942 		const char *host;
943 		const char *port;
944 		const char *remote_repo_path;
945 		const char *git_url;
946 		int fetch_all_branches;
947 		int mirror_references;
948 	} config_info;
949 };
950 
951 /* XXX forward declaration */
952 static const struct got_error *
953 create_config_files(const char *proto, const char *host, const char *port,
954     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
955     int mirror_references, struct got_pathlist_head *symrefs,
956     struct got_pathlist_head *wanted_branches,
957     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
958 
959 static const struct got_error *
960 fetch_progress(void *arg, const char *message, off_t packfile_size,
961     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
962 {
963 	const struct got_error *err = NULL;
964 	struct got_fetch_progress_arg *a = arg;
965 	char scaled_size[FMT_SCALED_STRSIZE];
966 	int p_indexed, p_resolved;
967 	int print_size = 0, print_indexed = 0, print_resolved = 0;
968 
969 	/*
970 	 * In order to allow a failed clone to be resumed with 'got fetch'
971 	 * we try to create configuration files as soon as possible.
972 	 * Once the server has sent information about its default branch
973 	 * we have all required information.
974 	 */
975 	if (a->create_configs && !a->configs_created &&
976 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
977 		err = create_config_files(a->config_info.proto,
978 		    a->config_info.host, a->config_info.port,
979 		    a->config_info.remote_repo_path,
980 		    a->config_info.git_url,
981 		    a->config_info.fetch_all_branches,
982 		    a->config_info.mirror_references,
983 		    a->config_info.symrefs,
984 		    a->config_info.wanted_branches,
985 		    a->config_info.wanted_refs, a->repo);
986 		if (err)
987 			return err;
988 		a->configs_created = 1;
989 	}
990 
991 	if (a->verbosity < 0)
992 		return NULL;
993 
994 	if (message && message[0] != '\0') {
995 		printf("\rserver: %s", message);
996 		fflush(stdout);
997 		return NULL;
998 	}
999 
1000 	if (packfile_size > 0 || nobj_indexed > 0) {
1001 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1002 		    (a->last_scaled_size[0] == '\0' ||
1003 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1004 			print_size = 1;
1005 			if (strlcpy(a->last_scaled_size, scaled_size,
1006 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1007 				return got_error(GOT_ERR_NO_SPACE);
1008 		}
1009 		if (nobj_indexed > 0) {
1010 			p_indexed = (nobj_indexed * 100) / nobj_total;
1011 			if (p_indexed != a->last_p_indexed) {
1012 				a->last_p_indexed = p_indexed;
1013 				print_indexed = 1;
1014 				print_size = 1;
1015 			}
1016 		}
1017 		if (nobj_resolved > 0) {
1018 			p_resolved = (nobj_resolved * 100) /
1019 			    (nobj_total - nobj_loose);
1020 			if (p_resolved != a->last_p_resolved) {
1021 				a->last_p_resolved = p_resolved;
1022 				print_resolved = 1;
1023 				print_indexed = 1;
1024 				print_size = 1;
1025 			}
1026 		}
1027 
1028 	}
1029 	if (print_size || print_indexed || print_resolved)
1030 		printf("\r");
1031 	if (print_size)
1032 		printf("%*s fetched", FMT_SCALED_STRSIZE, scaled_size);
1033 	if (print_indexed)
1034 		printf("; indexing %d%%", p_indexed);
1035 	if (print_resolved)
1036 		printf("; resolving deltas %d%%", p_resolved);
1037 	if (print_size || print_indexed || print_resolved)
1038 		fflush(stdout);
1039 
1040 	return NULL;
1041 }
1042 
1043 static const struct got_error *
1044 create_symref(const char *refname, struct got_reference *target_ref,
1045     int verbosity, struct got_repository *repo)
1046 {
1047 	const struct got_error *err;
1048 	struct got_reference *head_symref;
1049 
1050 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1051 	if (err)
1052 		return err;
1053 
1054 	err = got_ref_write(head_symref, repo);
1055 	if (err == NULL && verbosity > 0) {
1056 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1057 		    got_ref_get_name(target_ref));
1058 	}
1059 	got_ref_close(head_symref);
1060 	return err;
1061 }
1062 
1063 static const struct got_error *
1064 list_remote_refs(struct got_pathlist_head *symrefs,
1065     struct got_pathlist_head *refs)
1066 {
1067 	const struct got_error *err;
1068 	struct got_pathlist_entry *pe;
1069 
1070 	TAILQ_FOREACH(pe, symrefs, entry) {
1071 		const char *refname = pe->path;
1072 		const char *targetref = pe->data;
1073 
1074 		printf("%s: %s\n", refname, targetref);
1075 	}
1076 
1077 	TAILQ_FOREACH(pe, refs, entry) {
1078 		const char *refname = pe->path;
1079 		struct got_object_id *id = pe->data;
1080 		char *id_str;
1081 
1082 		err = got_object_id_str(&id_str, id);
1083 		if (err)
1084 			return err;
1085 		printf("%s: %s\n", refname, id_str);
1086 		free(id_str);
1087 	}
1088 
1089 	return NULL;
1090 }
1091 
1092 static const struct got_error *
1093 create_ref(const char *refname, struct got_object_id *id,
1094     int verbosity, struct got_repository *repo)
1095 {
1096 	const struct got_error *err = NULL;
1097 	struct got_reference *ref;
1098 	char *id_str;
1099 
1100 	err = got_object_id_str(&id_str, id);
1101 	if (err)
1102 		return err;
1103 
1104 	err = got_ref_alloc(&ref, refname, id);
1105 	if (err)
1106 		goto done;
1107 
1108 	err = got_ref_write(ref, repo);
1109 	got_ref_close(ref);
1110 
1111 	if (err == NULL && verbosity >= 0)
1112 		printf("Created reference %s: %s\n", refname, id_str);
1113 done:
1114 	free(id_str);
1115 	return err;
1116 }
1117 
1118 static int
1119 match_wanted_ref(const char *refname, const char *wanted_ref)
1120 {
1121 	if (strncmp(refname, "refs/", 5) != 0)
1122 		return 0;
1123 	refname += 5;
1124 
1125 	/*
1126 	 * Prevent fetching of references that won't make any
1127 	 * sense outside of the remote repository's context.
1128 	 */
1129 	if (strncmp(refname, "got/", 4) == 0)
1130 		return 0;
1131 	if (strncmp(refname, "remotes/", 8) == 0)
1132 		return 0;
1133 
1134 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1135 		wanted_ref += 5;
1136 
1137 	/* Allow prefix match. */
1138 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1139 		return 1;
1140 
1141 	/* Allow exact match. */
1142 	return (strcmp(refname, wanted_ref) == 0);
1143 }
1144 
1145 static int
1146 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1147 {
1148 	struct got_pathlist_entry *pe;
1149 
1150 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1151 		if (match_wanted_ref(refname, pe->path))
1152 			return 1;
1153 	}
1154 
1155 	return 0;
1156 }
1157 
1158 static const struct got_error *
1159 create_wanted_ref(const char *refname, struct got_object_id *id,
1160     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1161 {
1162 	const struct got_error *err;
1163 	char *remote_refname;
1164 
1165 	if (strncmp("refs/", refname, 5) == 0)
1166 		refname += 5;
1167 
1168 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1169 	    remote_repo_name, refname) == -1)
1170 		return got_error_from_errno("asprintf");
1171 
1172 	err = create_ref(remote_refname, id, verbosity, repo);
1173 	free(remote_refname);
1174 	return err;
1175 }
1176 
1177 static const struct got_error *
1178 create_gotconfig(const char *proto, const char *host, const char *port,
1179     const char *remote_repo_path, const char *default_branch,
1180     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1181     struct got_pathlist_head *wanted_refs, int mirror_references,
1182     struct got_repository *repo)
1183 {
1184 	const struct got_error *err = NULL;
1185 	char *gotconfig_path = NULL;
1186 	char *gotconfig = NULL;
1187 	FILE *gotconfig_file = NULL;
1188 	const char *branchname = NULL;
1189 	char *branches = NULL, *refs = NULL;
1190 	ssize_t n;
1191 
1192 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1193 		struct got_pathlist_entry *pe;
1194 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1195 			char *s;
1196 			branchname = pe->path;
1197 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1198 				branchname += 11;
1199 			if (asprintf(&s, "%s\"%s\" ",
1200 			    branches ? branches : "", branchname) == -1) {
1201 				err = got_error_from_errno("asprintf");
1202 				goto done;
1203 			}
1204 			free(branches);
1205 			branches = s;
1206 		}
1207 	} else if (!fetch_all_branches && default_branch) {
1208 		branchname = default_branch;
1209 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1210 			branchname += 11;
1211 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1212 			err = got_error_from_errno("asprintf");
1213 			goto done;
1214 		}
1215 	}
1216 	if (!TAILQ_EMPTY(wanted_refs)) {
1217 		struct got_pathlist_entry *pe;
1218 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1219 			char *s;
1220 			const char *refname = pe->path;
1221 			if (strncmp(refname, "refs/", 5) == 0)
1222 				branchname += 5;
1223 			if (asprintf(&s, "%s\"%s\" ",
1224 			    refs ? refs : "", refname) == -1) {
1225 				err = got_error_from_errno("asprintf");
1226 				goto done;
1227 			}
1228 			free(refs);
1229 			refs = s;
1230 		}
1231 	}
1232 
1233 	/* Create got.conf(5). */
1234 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1235 	if (gotconfig_path == NULL) {
1236 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1237 		goto done;
1238 	}
1239 	gotconfig_file = fopen(gotconfig_path, "a");
1240 	if (gotconfig_file == NULL) {
1241 		err = got_error_from_errno2("fopen", gotconfig_path);
1242 		goto done;
1243 	}
1244 	if (asprintf(&gotconfig,
1245 	    "remote \"%s\" {\n"
1246 	    "\tserver %s\n"
1247 	    "\tprotocol %s\n"
1248 	    "%s%s%s"
1249 	    "\trepository \"%s\"\n"
1250 	    "%s%s%s"
1251 	    "%s%s%s"
1252 	    "%s"
1253 	    "%s"
1254 	    "}\n",
1255 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1256 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1257 	    remote_repo_path, branches ? "\tbranch { " : "",
1258 	    branches ? branches : "", branches ? "}\n" : "", 
1259 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "", 
1260 	    mirror_references ? "\tmirror-references yes\n" : "",
1261 	    fetch_all_branches ? "\tfetch-all-branches yes\n" : "") == -1) {
1262 		err = got_error_from_errno("asprintf");
1263 		goto done;
1264 	}
1265 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1266 	if (n != strlen(gotconfig)) {
1267 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1268 		goto done;
1269 	}
1270 
1271 done:
1272 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1273 		err = got_error_from_errno2("fclose", gotconfig_path);
1274 	free(gotconfig_path);
1275 	free(branches);
1276 	return err;
1277 }
1278 
1279 static const struct got_error *
1280 create_gitconfig(const char *git_url, const char *default_branch,
1281     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1282     struct got_pathlist_head *wanted_refs, int mirror_references,
1283     struct got_repository *repo)
1284 {
1285 	const struct got_error *err = NULL;
1286 	char *gitconfig_path = NULL;
1287 	char *gitconfig = NULL;
1288 	FILE *gitconfig_file = NULL;
1289 	char *branches = NULL, *refs = NULL;
1290 	const char *branchname;
1291 	ssize_t n;
1292 
1293 	/* Create a config file Git can understand. */
1294 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1295 	if (gitconfig_path == NULL) {
1296 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1297 		goto done;
1298 	}
1299 	gitconfig_file = fopen(gitconfig_path, "a");
1300 	if (gitconfig_file == NULL) {
1301 		err = got_error_from_errno2("fopen", gitconfig_path);
1302 		goto done;
1303 	}
1304 	if (fetch_all_branches) {
1305 		if (mirror_references) {
1306 			if (asprintf(&branches,
1307 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1308 				err = got_error_from_errno("asprintf");
1309 				goto done;
1310 			}
1311 		} else if (asprintf(&branches,
1312 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1313 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1314 			err = got_error_from_errno("asprintf");
1315 			goto done;
1316 		}
1317 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1318 		struct got_pathlist_entry *pe;
1319 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1320 			char *s;
1321 			branchname = pe->path;
1322 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1323 				branchname += 11;
1324 			if (mirror_references) {
1325 				if (asprintf(&s,
1326 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1327 				    branches ? branches : "",
1328 				    branchname, branchname) == -1) {
1329 					err = got_error_from_errno("asprintf");
1330 					goto done;
1331 				}
1332 			} else if (asprintf(&s,
1333 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1334 			    branches ? branches : "",
1335 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1336 			    branchname) == -1) {
1337 				err = got_error_from_errno("asprintf");
1338 				goto done;
1339 			}
1340 			free(branches);
1341 			branches = s;
1342 		}
1343 	} else {
1344 		/*
1345 		 * If the server specified a default branch, use just that one.
1346 		 * Otherwise fall back to fetching all branches on next fetch.
1347 		 */
1348 		if (default_branch) {
1349 			branchname = default_branch;
1350 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1351 				branchname += 11;
1352 		} else
1353 			branchname = "*"; /* fall back to all branches */
1354 		if (mirror_references) {
1355 			if (asprintf(&branches,
1356 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1357 			    branchname, branchname) == -1) {
1358 				err = got_error_from_errno("asprintf");
1359 				goto done;
1360 			}
1361 		} else if (asprintf(&branches,
1362 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1363 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1364 		    branchname) == -1) {
1365 			err = got_error_from_errno("asprintf");
1366 			goto done;
1367 		}
1368 	}
1369 	if (!TAILQ_EMPTY(wanted_refs)) {
1370 		struct got_pathlist_entry *pe;
1371 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1372 			char *s;
1373 			const char *refname = pe->path;
1374 			if (strncmp(refname, "refs/", 5) == 0)
1375 				refname += 5;
1376 			if (mirror_references) {
1377 				if (asprintf(&s,
1378 				    "%s\tfetch = refs/%s:refs/%s\n",
1379 				    refs ? refs : "", refname, refname) == -1) {
1380 					err = got_error_from_errno("asprintf");
1381 					goto done;
1382 				}
1383 			} else if (asprintf(&s,
1384 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1385 			    refs ? refs : "",
1386 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1387 			    refname) == -1) {
1388 				err = got_error_from_errno("asprintf");
1389 				goto done;
1390 			}
1391 			free(refs);
1392 			refs = s;
1393 		}
1394 	}
1395 
1396 	if (asprintf(&gitconfig,
1397 	    "[remote \"%s\"]\n"
1398 	    "\turl = %s\n"
1399 	    "%s"
1400 	    "%s"
1401 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1402 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1403 	    refs ? refs : "") == -1) {
1404 		err = got_error_from_errno("asprintf");
1405 		goto done;
1406 	}
1407 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1408 	if (n != strlen(gitconfig)) {
1409 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1410 		goto done;
1411 	}
1412 done:
1413 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1414 		err = got_error_from_errno2("fclose", gitconfig_path);
1415 	free(gitconfig_path);
1416 	free(branches);
1417 	return err;
1418 }
1419 
1420 static const struct got_error *
1421 create_config_files(const char *proto, const char *host, const char *port,
1422     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1423     int mirror_references, struct got_pathlist_head *symrefs,
1424     struct got_pathlist_head *wanted_branches,
1425     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1426 {
1427 	const struct got_error *err = NULL;
1428 	const char *default_branch = NULL;
1429 	struct got_pathlist_entry *pe;
1430 
1431 	/*
1432 	 * If we asked for a set of wanted branches then use the first
1433 	 * one of those.
1434 	 */
1435 	if (!TAILQ_EMPTY(wanted_branches)) {
1436 		pe = TAILQ_FIRST(wanted_branches);
1437 		default_branch = pe->path;
1438 	} else {
1439 		/* First HEAD ref listed by server is the default branch. */
1440 		TAILQ_FOREACH(pe, symrefs, entry) {
1441 			const char *refname = pe->path;
1442 			const char *target = pe->data;
1443 
1444 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1445 				continue;
1446 
1447 			default_branch = target;
1448 			break;
1449 		}
1450 	}
1451 
1452 	/* Create got.conf(5). */
1453 	err = create_gotconfig(proto, host, port, remote_repo_path,
1454 	    default_branch, fetch_all_branches, wanted_branches,
1455 	    wanted_refs, mirror_references, repo);
1456 	if (err)
1457 		return err;
1458 
1459 	/* Create a config file Git can understand. */
1460 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1461 	    wanted_branches, wanted_refs, mirror_references, repo);
1462 }
1463 
1464 static const struct got_error *
1465 cmd_clone(int argc, char *argv[])
1466 {
1467 	const struct got_error *error = NULL;
1468 	const char *uri, *dirname;
1469 	char *proto, *host, *port, *repo_name, *server_path;
1470 	char *default_destdir = NULL, *id_str = NULL;
1471 	const char *repo_path;
1472 	struct got_repository *repo = NULL;
1473 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1474 	struct got_pathlist_entry *pe;
1475 	struct got_object_id *pack_hash = NULL;
1476 	int ch, fetchfd = -1, fetchstatus;
1477 	pid_t fetchpid = -1;
1478 	struct got_fetch_progress_arg fpa;
1479 	char *git_url = NULL;
1480 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1481 	int list_refs_only = 0;
1482 
1483 	TAILQ_INIT(&refs);
1484 	TAILQ_INIT(&symrefs);
1485 	TAILQ_INIT(&wanted_branches);
1486 	TAILQ_INIT(&wanted_refs);
1487 
1488 	while ((ch = getopt(argc, argv, "ab:lmvqR:")) != -1) {
1489 		switch (ch) {
1490 		case 'a':
1491 			fetch_all_branches = 1;
1492 			break;
1493 		case 'b':
1494 			error = got_pathlist_append(&wanted_branches,
1495 			    optarg, NULL);
1496 			if (error)
1497 				return error;
1498 			break;
1499 		case 'l':
1500 			list_refs_only = 1;
1501 			break;
1502 		case 'm':
1503 			mirror_references = 1;
1504 			break;
1505 		case 'v':
1506 			if (verbosity < 0)
1507 				verbosity = 0;
1508 			else if (verbosity < 3)
1509 				verbosity++;
1510 			break;
1511 		case 'q':
1512 			verbosity = -1;
1513 			break;
1514 		case 'R':
1515 			error = got_pathlist_append(&wanted_refs,
1516 			    optarg, NULL);
1517 			if (error)
1518 				return error;
1519 			break;
1520 		default:
1521 			usage_clone();
1522 			break;
1523 		}
1524 	}
1525 	argc -= optind;
1526 	argv += optind;
1527 
1528 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1529 		option_conflict('a', 'b');
1530 	if (list_refs_only) {
1531 		if (!TAILQ_EMPTY(&wanted_branches))
1532 			option_conflict('l', 'b');
1533 		if (fetch_all_branches)
1534 			option_conflict('l', 'a');
1535 		if (mirror_references)
1536 			option_conflict('l', 'm');
1537 		if (!TAILQ_EMPTY(&wanted_refs))
1538 			option_conflict('l', 'R');
1539 	}
1540 
1541 	uri = argv[0];
1542 
1543 	if (argc == 1)
1544 		dirname = NULL;
1545 	else if (argc == 2)
1546 		dirname = argv[1];
1547 	else
1548 		usage_clone();
1549 
1550 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1551 	    &repo_name, uri);
1552 	if (error)
1553 		goto done;
1554 
1555 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1556 	    host, port ? ":" : "", port ? port : "",
1557 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1558 		error = got_error_from_errno("asprintf");
1559 		goto done;
1560 	}
1561 
1562 	if (strcmp(proto, "git") == 0) {
1563 #ifndef PROFILE
1564 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1565 		    "sendfd dns inet unveil", NULL) == -1)
1566 			err(1, "pledge");
1567 #endif
1568 	} else if (strcmp(proto, "git+ssh") == 0 ||
1569 	    strcmp(proto, "ssh") == 0) {
1570 #ifndef PROFILE
1571 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1572 		    "sendfd unveil", NULL) == -1)
1573 			err(1, "pledge");
1574 #endif
1575 	} else if (strcmp(proto, "http") == 0 ||
1576 	    strcmp(proto, "git+http") == 0) {
1577 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1578 		goto done;
1579 	} else {
1580 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1581 		goto done;
1582 	}
1583 	if (dirname == NULL) {
1584 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1585 			error = got_error_from_errno("asprintf");
1586 			goto done;
1587 		}
1588 		repo_path = default_destdir;
1589 	} else
1590 		repo_path = dirname;
1591 
1592 	if (!list_refs_only) {
1593 		error = got_path_mkdir(repo_path);
1594 		if (error &&
1595 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1596 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1597 			goto done;
1598 		if (!got_path_dir_is_empty(repo_path)) {
1599 			error = got_error_path(repo_path,
1600 			    GOT_ERR_DIR_NOT_EMPTY);
1601 			goto done;
1602 		}
1603 	}
1604 
1605 	error = got_dial_apply_unveil(proto);
1606 	if (error)
1607 		goto done;
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 		const char *their_refname;
2027 
2028 		if (remote->mirror_references) {
2029 			their_refname = refname;
2030 		} else {
2031 			if (strncmp(refname, remote_namespace,
2032 			    strlen(remote_namespace)) == 0) {
2033 				if (strcmp(refname + strlen(remote_namespace),
2034 				    GOT_REF_HEAD) == 0)
2035 					continue;
2036 				if (asprintf(&local_refname, "refs/heads/%s",
2037 				    refname + strlen(remote_namespace)) == -1) {
2038 					err = got_error_from_errno("asprintf");
2039 					goto done;
2040 				}
2041 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2042 				continue;
2043 
2044 			their_refname = local_refname;
2045 		}
2046 	
2047 		TAILQ_FOREACH(pe, their_refs, entry) {
2048 			if (strcmp(their_refname, pe->path) == 0)
2049 				break;
2050 		}
2051 		if (pe != NULL)
2052 			continue;
2053 
2054 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2055 			if (strcmp(their_refname, pe->path) == 0)
2056 				break;
2057 		}
2058 		if (pe != NULL)
2059 			continue;
2060 
2061 		err = delete_missing_ref(re->ref, verbosity, repo);
2062 		if (err)
2063 			break;
2064 
2065 		if (local_refname) {
2066 			struct got_reference *ref;
2067 			err = got_ref_open(&ref, repo, local_refname, 1);
2068 			if (err) {
2069 				if (err->code != GOT_ERR_NOT_REF)
2070 					break;
2071 				free(local_refname);
2072 				local_refname = NULL;
2073 				continue;
2074 			}
2075 			err = delete_missing_ref(ref, verbosity, repo);
2076 			if (err)
2077 				break;
2078 			unlock_err = got_ref_unlock(ref);
2079 			got_ref_close(ref);
2080 			if (unlock_err && err == NULL) {
2081 				err = unlock_err;
2082 				break;
2083 			}
2084 
2085 			free(local_refname);
2086 			local_refname = NULL;
2087 		}
2088 	}
2089 done:
2090 	free(remote_namespace);
2091 	free(local_refname);
2092 	return err;
2093 }
2094 
2095 static const struct got_error *
2096 update_wanted_ref(const char *refname, struct got_object_id *id,
2097     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2098 {
2099 	const struct got_error *err, *unlock_err;
2100 	char *remote_refname;
2101 	struct got_reference *ref;
2102 
2103 	if (strncmp("refs/", refname, 5) == 0)
2104 		refname += 5;
2105 
2106 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2107 	    remote_repo_name, refname) == -1)
2108 		return got_error_from_errno("asprintf");
2109 
2110 	err = got_ref_open(&ref, repo, remote_refname, 1);
2111 	if (err) {
2112 		if (err->code != GOT_ERR_NOT_REF)
2113 			goto done;
2114 		err = create_ref(remote_refname, id, verbosity, repo);
2115 	} else {
2116 		err = update_ref(ref, id, 0, verbosity, repo);
2117 		unlock_err = got_ref_unlock(ref);
2118 		if (unlock_err && err == NULL)
2119 			err = unlock_err;
2120 		got_ref_close(ref);
2121 	}
2122 done:
2123 	free(remote_refname);
2124 	return err;
2125 }
2126 
2127 static const struct got_error *
2128 delete_ref(struct got_repository *repo, struct got_reference *ref)
2129 {
2130 	const struct got_error *err = NULL;
2131 	struct got_object_id *id = NULL;
2132 	char *id_str = NULL;
2133 	const char *target;
2134 
2135 	if (got_ref_is_symbolic(ref)) {
2136 		target = got_ref_get_symref_target(ref);
2137 	} else {
2138 		err = got_ref_resolve(&id, repo, ref);
2139 		if (err)
2140 			goto done;
2141 		err = got_object_id_str(&id_str, id);
2142 		if (err)
2143 			goto done;
2144 		target = id_str;
2145 	}
2146 
2147 	err = got_ref_delete(ref, repo);
2148 	if (err)
2149 		goto done;
2150 
2151 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2152 done:
2153 	free(id);
2154 	free(id_str);
2155 	return err;
2156 }
2157 
2158 static const struct got_error *
2159 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2160 {
2161 	const struct got_error *err = NULL;
2162 	struct got_reflist_head refs;
2163 	struct got_reflist_entry *re;
2164 	char *prefix;
2165 
2166 	TAILQ_INIT(&refs);
2167 
2168 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2169 		err = got_error_from_errno("asprintf");
2170 		goto done;
2171 	}
2172 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2173 	if (err)
2174 		goto done;
2175 
2176 	TAILQ_FOREACH(re, &refs, entry)
2177 		delete_ref(repo, re->ref);
2178 done:
2179 	got_ref_list_free(&refs);
2180 	return err;
2181 }
2182 
2183 static const struct got_error *
2184 cmd_fetch(int argc, char *argv[])
2185 {
2186 	const struct got_error *error = NULL, *unlock_err;
2187 	char *cwd = NULL, *repo_path = NULL;
2188 	const char *remote_name;
2189 	char *proto = NULL, *host = NULL, *port = NULL;
2190 	char *repo_name = NULL, *server_path = NULL;
2191 	const struct got_remote_repo *remotes, *remote = NULL;
2192 	int nremotes;
2193 	char *id_str = NULL;
2194 	struct got_repository *repo = NULL;
2195 	struct got_worktree *worktree = NULL;
2196 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2197 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2198 	struct got_pathlist_entry *pe;
2199 	struct got_object_id *pack_hash = NULL;
2200 	int i, ch, fetchfd = -1, fetchstatus;
2201 	pid_t fetchpid = -1;
2202 	struct got_fetch_progress_arg fpa;
2203 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2204 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2205 
2206 	TAILQ_INIT(&refs);
2207 	TAILQ_INIT(&symrefs);
2208 	TAILQ_INIT(&wanted_branches);
2209 	TAILQ_INIT(&wanted_refs);
2210 
2211 	while ((ch = getopt(argc, argv, "ab:dlr:tvqR:X")) != -1) {
2212 		switch (ch) {
2213 		case 'a':
2214 			fetch_all_branches = 1;
2215 			break;
2216 		case 'b':
2217 			error = got_pathlist_append(&wanted_branches,
2218 			    optarg, NULL);
2219 			if (error)
2220 				return error;
2221 			break;
2222 		case 'd':
2223 			delete_refs = 1;
2224 			break;
2225 		case 'l':
2226 			list_refs_only = 1;
2227 			break;
2228 		case 'r':
2229 			repo_path = realpath(optarg, NULL);
2230 			if (repo_path == NULL)
2231 				return got_error_from_errno2("realpath",
2232 				    optarg);
2233 			got_path_strip_trailing_slashes(repo_path);
2234 			break;
2235 		case 't':
2236 			replace_tags = 1;
2237 			break;
2238 		case 'v':
2239 			if (verbosity < 0)
2240 				verbosity = 0;
2241 			else if (verbosity < 3)
2242 				verbosity++;
2243 			break;
2244 		case 'q':
2245 			verbosity = -1;
2246 			break;
2247 		case 'R':
2248 			error = got_pathlist_append(&wanted_refs,
2249 			    optarg, NULL);
2250 			if (error)
2251 				return error;
2252 			break;
2253 		case 'X':
2254 			delete_remote = 1;
2255 			break;
2256 		default:
2257 			usage_fetch();
2258 			break;
2259 		}
2260 	}
2261 	argc -= optind;
2262 	argv += optind;
2263 
2264 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2265 		option_conflict('a', 'b');
2266 	if (list_refs_only) {
2267 		if (!TAILQ_EMPTY(&wanted_branches))
2268 			option_conflict('l', 'b');
2269 		if (fetch_all_branches)
2270 			option_conflict('l', 'a');
2271 		if (delete_refs)
2272 			option_conflict('l', 'd');
2273 		if (delete_remote)
2274 			option_conflict('l', 'X');
2275 	}
2276 	if (delete_remote) {
2277 		if (fetch_all_branches)
2278 			option_conflict('X', 'a');
2279 		if (!TAILQ_EMPTY(&wanted_branches))
2280 			option_conflict('X', 'b');
2281 		if (delete_refs)
2282 			option_conflict('X', 'd');
2283 		if (replace_tags)
2284 			option_conflict('X', 't');
2285 		if (!TAILQ_EMPTY(&wanted_refs))
2286 			option_conflict('X', 'R');
2287 	}
2288 
2289 	if (argc == 0) {
2290 		if (delete_remote)
2291 			errx(1, "-X option requires a remote name");
2292 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2293 	} else if (argc == 1)
2294 		remote_name = argv[0];
2295 	else
2296 		usage_fetch();
2297 
2298 	cwd = getcwd(NULL, 0);
2299 	if (cwd == NULL) {
2300 		error = got_error_from_errno("getcwd");
2301 		goto done;
2302 	}
2303 
2304 	if (repo_path == NULL) {
2305 		error = got_worktree_open(&worktree, cwd);
2306 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2307 			goto done;
2308 		else
2309 			error = NULL;
2310 		if (worktree) {
2311 			repo_path =
2312 			    strdup(got_worktree_get_repo_path(worktree));
2313 			if (repo_path == NULL)
2314 				error = got_error_from_errno("strdup");
2315 			if (error)
2316 				goto done;
2317 		} else {
2318 			repo_path = strdup(cwd);
2319 			if (repo_path == NULL) {
2320 				error = got_error_from_errno("strdup");
2321 				goto done;
2322 			}
2323 		}
2324 	}
2325 
2326 	error = got_repo_open(&repo, repo_path, NULL);
2327 	if (error)
2328 		goto done;
2329 
2330 	if (delete_remote) {
2331 		error = delete_refs_for_remote(repo, remote_name);
2332 		goto done; /* nothing else to do */
2333 	}
2334 
2335 	if (worktree) {
2336 		worktree_conf = got_worktree_get_gotconfig(worktree);
2337 		if (worktree_conf) {
2338 			got_gotconfig_get_remotes(&nremotes, &remotes,
2339 			    worktree_conf);
2340 			for (i = 0; i < nremotes; i++) {
2341 				if (strcmp(remotes[i].name, remote_name) == 0) {
2342 					remote = &remotes[i];
2343 					break;
2344 				}
2345 			}
2346 		}
2347 	}
2348 	if (remote == NULL) {
2349 		repo_conf = got_repo_get_gotconfig(repo);
2350 		if (repo_conf) {
2351 			got_gotconfig_get_remotes(&nremotes, &remotes,
2352 			    repo_conf);
2353 			for (i = 0; i < nremotes; i++) {
2354 				if (strcmp(remotes[i].name, remote_name) == 0) {
2355 					remote = &remotes[i];
2356 					break;
2357 				}
2358 			}
2359 		}
2360 	}
2361 	if (remote == NULL) {
2362 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2363 		for (i = 0; i < nremotes; i++) {
2364 			if (strcmp(remotes[i].name, remote_name) == 0) {
2365 				remote = &remotes[i];
2366 				break;
2367 			}
2368 		}
2369 	}
2370 	if (remote == NULL) {
2371 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2372 		goto done;
2373 	}
2374 
2375 	if (TAILQ_EMPTY(&wanted_branches)) {
2376 		if (!fetch_all_branches)
2377 			fetch_all_branches = remote->fetch_all_branches;
2378 		for (i = 0; i < remote->nfetch_branches; i++) {
2379 			got_pathlist_append(&wanted_branches,
2380 			    remote->fetch_branches[i], NULL);
2381 		}
2382 	}
2383 	if (TAILQ_EMPTY(&wanted_refs)) {
2384 		for (i = 0; i < remote->nfetch_refs; i++) {
2385 			got_pathlist_append(&wanted_refs,
2386 			    remote->fetch_refs[i], NULL);
2387 		}
2388 	}
2389 
2390 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2391 	    &repo_name, remote->fetch_url);
2392 	if (error)
2393 		goto done;
2394 
2395 	if (strcmp(proto, "git") == 0) {
2396 #ifndef PROFILE
2397 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2398 		    "sendfd dns inet unveil", NULL) == -1)
2399 			err(1, "pledge");
2400 #endif
2401 	} else if (strcmp(proto, "git+ssh") == 0 ||
2402 	    strcmp(proto, "ssh") == 0) {
2403 #ifndef PROFILE
2404 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2405 		    "sendfd unveil", NULL) == -1)
2406 			err(1, "pledge");
2407 #endif
2408 	} else if (strcmp(proto, "http") == 0 ||
2409 	    strcmp(proto, "git+http") == 0) {
2410 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2411 		goto done;
2412 	} else {
2413 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2414 		goto done;
2415 	}
2416 
2417 	error = got_dial_apply_unveil(proto);
2418 	if (error)
2419 		goto done;
2420 
2421 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2422 	if (error)
2423 		goto done;
2424 
2425 	if (verbosity >= 0)
2426 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
2427 		    port ? ":" : "", port ? port : "");
2428 
2429 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2430 	    server_path, verbosity);
2431 	if (error)
2432 		goto done;
2433 
2434 	fpa.last_scaled_size[0] = '\0';
2435 	fpa.last_p_indexed = -1;
2436 	fpa.last_p_resolved = -1;
2437 	fpa.verbosity = verbosity;
2438 	fpa.repo = repo;
2439 	fpa.create_configs = 0;
2440 	fpa.configs_created = 0;
2441 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2442 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2443 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2444 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2445 	    fetch_progress, &fpa);
2446 	if (error)
2447 		goto done;
2448 
2449 	if (list_refs_only) {
2450 		error = list_remote_refs(&symrefs, &refs);
2451 		goto done;
2452 	}
2453 
2454 	if (pack_hash == NULL) {
2455 		if (verbosity >= 0)
2456 			printf("Already up-to-date\n");
2457 	} else if (verbosity >= 0) {
2458 		error = got_object_id_str(&id_str, pack_hash);
2459 		if (error)
2460 			goto done;
2461 		printf("\nFetched %s.pack\n", id_str);
2462 		free(id_str);
2463 		id_str = NULL;
2464 	}
2465 
2466 	/* Update references provided with the pack file. */
2467 	TAILQ_FOREACH(pe, &refs, entry) {
2468 		const char *refname = pe->path;
2469 		struct got_object_id *id = pe->data;
2470 		struct got_reference *ref;
2471 		char *remote_refname;
2472 
2473 		if (is_wanted_ref(&wanted_refs, refname) &&
2474 		    !remote->mirror_references) {
2475 			error = update_wanted_ref(refname, id,
2476 			    remote->name, verbosity, repo);
2477 			if (error)
2478 				goto done;
2479 			continue;
2480 		}
2481 
2482 		if (remote->mirror_references ||
2483 		    strncmp("refs/tags/", refname, 10) == 0) {
2484 			error = got_ref_open(&ref, repo, refname, 1);
2485 			if (error) {
2486 				if (error->code != GOT_ERR_NOT_REF)
2487 					goto done;
2488 				error = create_ref(refname, id, verbosity,
2489 				    repo);
2490 				if (error)
2491 					goto done;
2492 			} else {
2493 				error = update_ref(ref, id, replace_tags,
2494 				    verbosity, repo);
2495 				unlock_err = got_ref_unlock(ref);
2496 				if (unlock_err && error == NULL)
2497 					error = unlock_err;
2498 				got_ref_close(ref);
2499 				if (error)
2500 					goto done;
2501 			}
2502 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2503 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2504 			    remote_name, refname + 11) == -1) {
2505 				error = got_error_from_errno("asprintf");
2506 				goto done;
2507 			}
2508 
2509 			error = got_ref_open(&ref, repo, remote_refname, 1);
2510 			if (error) {
2511 				if (error->code != GOT_ERR_NOT_REF)
2512 					goto done;
2513 				error = create_ref(remote_refname, id, 
2514 				    verbosity, repo);
2515 				if (error)
2516 					goto done;
2517 			} else {
2518 				error = update_ref(ref, id, replace_tags,
2519 				    verbosity, repo);
2520 				unlock_err = got_ref_unlock(ref);
2521 				if (unlock_err && error == NULL)
2522 					error = unlock_err;
2523 				got_ref_close(ref);
2524 				if (error)
2525 					goto done;
2526 			}
2527 
2528 			/* Also create a local branch if none exists yet. */
2529 			error = got_ref_open(&ref, repo, refname, 1);
2530 			if (error) {
2531 				if (error->code != GOT_ERR_NOT_REF)
2532 					goto done;
2533 				error = create_ref(refname, id, verbosity,
2534 				    repo);
2535 				if (error)
2536 					goto done;
2537 			} else {
2538 				unlock_err = got_ref_unlock(ref);
2539 				if (unlock_err && error == NULL)
2540 					error = unlock_err;
2541 				got_ref_close(ref);
2542 			}
2543 		}
2544 	}
2545 	if (delete_refs) {
2546 		error = delete_missing_refs(&refs, &symrefs, remote,
2547 		    verbosity, repo);
2548 		if (error)
2549 			goto done;
2550 	}
2551 
2552 	if (!remote->mirror_references) {
2553 		/* Update remote HEAD reference if the server provided one. */
2554 		TAILQ_FOREACH(pe, &symrefs, entry) {
2555 			struct got_reference *target_ref;
2556 			const char *refname = pe->path;
2557 			const char *target = pe->data;
2558 			char *remote_refname = NULL, *remote_target = NULL;
2559 
2560 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2561 				continue;
2562 
2563 			if (strncmp("refs/heads/", target, 11) != 0)
2564 				continue;
2565 
2566 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2567 			    remote->name, refname) == -1) {
2568 				error = got_error_from_errno("asprintf");
2569 				goto done;
2570 			}
2571 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2572 			    remote->name, target + 11) == -1) {
2573 				error = got_error_from_errno("asprintf");
2574 				free(remote_refname);
2575 				goto done;
2576 			}
2577 
2578 			error = got_ref_open(&target_ref, repo, remote_target,
2579 			    0);
2580 			if (error) {
2581 				free(remote_refname);
2582 				free(remote_target);
2583 				if (error->code == GOT_ERR_NOT_REF) {
2584 					error = NULL;
2585 					continue;
2586 				}
2587 				goto done;
2588 			}
2589 			error = update_symref(remote_refname, target_ref,
2590 			    verbosity, repo);
2591 			free(remote_refname);
2592 			free(remote_target);
2593 			got_ref_close(target_ref);
2594 			if (error)
2595 				goto done;
2596 		}
2597 	}
2598 done:
2599 	if (fetchpid > 0) {
2600 		if (kill(fetchpid, SIGTERM) == -1)
2601 			error = got_error_from_errno("kill");
2602 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2603 			error = got_error_from_errno("waitpid");
2604 	}
2605 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2606 		error = got_error_from_errno("close");
2607 	if (repo) {
2608 		const struct got_error *close_err = got_repo_close(repo);
2609 		if (error == NULL)
2610 			error = close_err;
2611 	}
2612 	if (worktree)
2613 		got_worktree_close(worktree);
2614 	TAILQ_FOREACH(pe, &refs, entry) {
2615 		free((void *)pe->path);
2616 		free(pe->data);
2617 	}
2618 	got_pathlist_free(&refs);
2619 	TAILQ_FOREACH(pe, &symrefs, entry) {
2620 		free((void *)pe->path);
2621 		free(pe->data);
2622 	}
2623 	got_pathlist_free(&symrefs);
2624 	got_pathlist_free(&wanted_branches);
2625 	got_pathlist_free(&wanted_refs);
2626 	free(id_str);
2627 	free(cwd);
2628 	free(repo_path);
2629 	free(pack_hash);
2630 	free(proto);
2631 	free(host);
2632 	free(port);
2633 	free(server_path);
2634 	free(repo_name);
2635 	return error;
2636 }
2637 
2638 
2639 __dead static void
2640 usage_checkout(void)
2641 {
2642 	fprintf(stderr, "usage: %s checkout [-E] [-b branch] [-c commit] "
2643 	    "[-p prefix] [-q] repository-path [worktree-path]\n",
2644 	    getprogname());
2645 	exit(1);
2646 }
2647 
2648 static void
2649 show_worktree_base_ref_warning(void)
2650 {
2651 	fprintf(stderr, "%s: warning: could not create a reference "
2652 	    "to the work tree's base commit; the commit could be "
2653 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2654 	    "repository writable and running 'got update' will prevent this\n",
2655 	    getprogname());
2656 }
2657 
2658 struct got_checkout_progress_arg {
2659 	const char *worktree_path;
2660 	int had_base_commit_ref_error;
2661 	int verbosity;
2662 };
2663 
2664 static const struct got_error *
2665 checkout_progress(void *arg, unsigned char status, const char *path)
2666 {
2667 	struct got_checkout_progress_arg *a = arg;
2668 
2669 	/* Base commit bump happens silently. */
2670 	if (status == GOT_STATUS_BUMP_BASE)
2671 		return NULL;
2672 
2673 	if (status == GOT_STATUS_BASE_REF_ERR) {
2674 		a->had_base_commit_ref_error = 1;
2675 		return NULL;
2676 	}
2677 
2678 	while (path[0] == '/')
2679 		path++;
2680 
2681 	if (a->verbosity >= 0)
2682 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2683 
2684 	return NULL;
2685 }
2686 
2687 static const struct got_error *
2688 check_cancelled(void *arg)
2689 {
2690 	if (sigint_received || sigpipe_received)
2691 		return got_error(GOT_ERR_CANCELLED);
2692 	return NULL;
2693 }
2694 
2695 static const struct got_error *
2696 check_linear_ancestry(struct got_object_id *commit_id,
2697     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2698     struct got_repository *repo)
2699 {
2700 	const struct got_error *err = NULL;
2701 	struct got_object_id *yca_id;
2702 
2703 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2704 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2705 	if (err)
2706 		return err;
2707 
2708 	if (yca_id == NULL)
2709 		return got_error(GOT_ERR_ANCESTRY);
2710 
2711 	/*
2712 	 * Require a straight line of history between the target commit
2713 	 * and the work tree's base commit.
2714 	 *
2715 	 * Non-linear situations such as this require a rebase:
2716 	 *
2717 	 * (commit) D       F (base_commit)
2718 	 *           \     /
2719 	 *            C   E
2720 	 *             \ /
2721 	 *              B (yca)
2722 	 *              |
2723 	 *              A
2724 	 *
2725 	 * 'got update' only handles linear cases:
2726 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2727 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2728 	 */
2729 	if (allow_forwards_in_time_only) {
2730 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2731 		return got_error(GOT_ERR_ANCESTRY);
2732 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2733 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2734 		return got_error(GOT_ERR_ANCESTRY);
2735 
2736 	free(yca_id);
2737 	return NULL;
2738 }
2739 
2740 static const struct got_error *
2741 check_same_branch(struct got_object_id *commit_id,
2742     struct got_reference *head_ref, struct got_object_id *yca_id,
2743     struct got_repository *repo)
2744 {
2745 	const struct got_error *err = NULL;
2746 	struct got_commit_graph *graph = NULL;
2747 	struct got_object_id *head_commit_id = NULL;
2748 	int is_same_branch = 0;
2749 
2750 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2751 	if (err)
2752 		goto done;
2753 
2754 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2755 		is_same_branch = 1;
2756 		goto done;
2757 	}
2758 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2759 		is_same_branch = 1;
2760 		goto done;
2761 	}
2762 
2763 	err = got_commit_graph_open(&graph, "/", 1);
2764 	if (err)
2765 		goto done;
2766 
2767 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2768 	    check_cancelled, NULL);
2769 	if (err)
2770 		goto done;
2771 
2772 	for (;;) {
2773 		struct got_object_id *id;
2774 		err = got_commit_graph_iter_next(&id, graph, repo,
2775 		    check_cancelled, NULL);
2776 		if (err) {
2777 			if (err->code == GOT_ERR_ITER_COMPLETED)
2778 				err = NULL;
2779 			break;
2780 		}
2781 
2782 		if (id) {
2783 			if (yca_id && got_object_id_cmp(id, yca_id) == 0)
2784 				break;
2785 			if (got_object_id_cmp(id, commit_id) == 0) {
2786 				is_same_branch = 1;
2787 				break;
2788 			}
2789 		}
2790 	}
2791 done:
2792 	if (graph)
2793 		got_commit_graph_close(graph);
2794 	free(head_commit_id);
2795 	if (!err && !is_same_branch)
2796 		err = got_error(GOT_ERR_ANCESTRY);
2797 	return err;
2798 }
2799 
2800 static const struct got_error *
2801 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2802 {
2803 	static char msg[512];
2804 	const char *branch_name;
2805 
2806 	if (got_ref_is_symbolic(ref))
2807 		branch_name = got_ref_get_symref_target(ref);
2808 	else
2809 		branch_name = got_ref_get_name(ref);
2810 
2811 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2812 		branch_name += 11;
2813 
2814 	snprintf(msg, sizeof(msg),
2815 	    "target commit is not contained in branch '%s'; "
2816 	    "the branch to use must be specified with -b; "
2817 	    "if necessary a new branch can be created for "
2818 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2819 	    branch_name, commit_id_str);
2820 
2821 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2822 }
2823 
2824 static const struct got_error *
2825 cmd_checkout(int argc, char *argv[])
2826 {
2827 	const struct got_error *error = NULL;
2828 	struct got_repository *repo = NULL;
2829 	struct got_reference *head_ref = NULL, *ref = NULL;
2830 	struct got_worktree *worktree = NULL;
2831 	char *repo_path = NULL;
2832 	char *worktree_path = NULL;
2833 	const char *path_prefix = "";
2834 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2835 	char *commit_id_str = NULL;
2836 	struct got_object_id *commit_id = NULL;
2837 	char *cwd = NULL;
2838 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2839 	struct got_pathlist_head paths;
2840 	struct got_checkout_progress_arg cpa;
2841 
2842 	TAILQ_INIT(&paths);
2843 
2844 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
2845 		switch (ch) {
2846 		case 'b':
2847 			branch_name = optarg;
2848 			break;
2849 		case 'c':
2850 			commit_id_str = strdup(optarg);
2851 			if (commit_id_str == NULL)
2852 				return got_error_from_errno("strdup");
2853 			break;
2854 		case 'E':
2855 			allow_nonempty = 1;
2856 			break;
2857 		case 'p':
2858 			path_prefix = optarg;
2859 			break;
2860 		case 'q':
2861 			verbosity = -1;
2862 			break;
2863 		default:
2864 			usage_checkout();
2865 			/* NOTREACHED */
2866 		}
2867 	}
2868 
2869 	argc -= optind;
2870 	argv += optind;
2871 
2872 #ifndef PROFILE
2873 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2874 	    "unveil", NULL) == -1)
2875 		err(1, "pledge");
2876 #endif
2877 	if (argc == 1) {
2878 		char *base, *dotgit;
2879 		const char *path;
2880 		repo_path = realpath(argv[0], NULL);
2881 		if (repo_path == NULL)
2882 			return got_error_from_errno2("realpath", argv[0]);
2883 		cwd = getcwd(NULL, 0);
2884 		if (cwd == NULL) {
2885 			error = got_error_from_errno("getcwd");
2886 			goto done;
2887 		}
2888 		if (path_prefix[0])
2889 			path = path_prefix;
2890 		else
2891 			path = repo_path;
2892 		error = got_path_basename(&base, path);
2893 		if (error)
2894 			goto done;
2895 		dotgit = strstr(base, ".git");
2896 		if (dotgit)
2897 			*dotgit = '\0';
2898 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
2899 			error = got_error_from_errno("asprintf");
2900 			free(base);
2901 			goto done;
2902 		}
2903 		free(base);
2904 	} else if (argc == 2) {
2905 		repo_path = realpath(argv[0], NULL);
2906 		if (repo_path == NULL) {
2907 			error = got_error_from_errno2("realpath", argv[0]);
2908 			goto done;
2909 		}
2910 		worktree_path = realpath(argv[1], NULL);
2911 		if (worktree_path == NULL) {
2912 			if (errno != ENOENT) {
2913 				error = got_error_from_errno2("realpath",
2914 				    argv[1]);
2915 				goto done;
2916 			}
2917 			worktree_path = strdup(argv[1]);
2918 			if (worktree_path == NULL) {
2919 				error = got_error_from_errno("strdup");
2920 				goto done;
2921 			}
2922 		}
2923 	} else
2924 		usage_checkout();
2925 
2926 	got_path_strip_trailing_slashes(repo_path);
2927 	got_path_strip_trailing_slashes(worktree_path);
2928 
2929 	error = got_repo_open(&repo, repo_path, NULL);
2930 	if (error != NULL)
2931 		goto done;
2932 
2933 	/* Pre-create work tree path for unveil(2) */
2934 	error = got_path_mkdir(worktree_path);
2935 	if (error) {
2936 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
2937 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2938 			goto done;
2939 		if (!allow_nonempty &&
2940 		    !got_path_dir_is_empty(worktree_path)) {
2941 			error = got_error_path(worktree_path,
2942 			    GOT_ERR_DIR_NOT_EMPTY);
2943 			goto done;
2944 		}
2945 	}
2946 
2947 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
2948 	if (error)
2949 		goto done;
2950 
2951 	error = got_ref_open(&head_ref, repo, branch_name, 0);
2952 	if (error != NULL)
2953 		goto done;
2954 
2955 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
2956 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2957 		goto done;
2958 
2959 	error = got_worktree_open(&worktree, worktree_path);
2960 	if (error != NULL)
2961 		goto done;
2962 
2963 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
2964 	    path_prefix);
2965 	if (error != NULL)
2966 		goto done;
2967 	if (!same_path_prefix) {
2968 		error = got_error(GOT_ERR_PATH_PREFIX);
2969 		goto done;
2970 	}
2971 
2972 	if (commit_id_str) {
2973 		struct got_reflist_head refs;
2974 		TAILQ_INIT(&refs);
2975 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
2976 		    NULL);
2977 		if (error)
2978 			goto done;
2979 		error = got_repo_match_object_id(&commit_id, NULL,
2980 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
2981 		got_ref_list_free(&refs);
2982 		if (error)
2983 			goto done;
2984 		error = check_linear_ancestry(commit_id,
2985 		    got_worktree_get_base_commit_id(worktree), 0, repo);
2986 		if (error != NULL) {
2987 			free(commit_id);
2988 			if (error->code == GOT_ERR_ANCESTRY) {
2989 				error = checkout_ancestry_error(
2990 				    head_ref, commit_id_str);
2991 			}
2992 			goto done;
2993 		}
2994 		error = check_same_branch(commit_id, head_ref, NULL, repo);
2995 		if (error) {
2996 			if (error->code == GOT_ERR_ANCESTRY) {
2997 				error = checkout_ancestry_error(
2998 				    head_ref, commit_id_str);
2999 			}
3000 			goto done;
3001 		}
3002 		error = got_worktree_set_base_commit_id(worktree, repo,
3003 		    commit_id);
3004 		if (error)
3005 			goto done;
3006 		/* Expand potentially abbreviated commit ID string. */
3007 		free(commit_id_str);
3008 		error = got_object_id_str(&commit_id_str, commit_id);
3009 		if (error)
3010 			goto done;
3011 	} else {
3012 		commit_id = got_object_id_dup(
3013 		    got_worktree_get_base_commit_id(worktree));
3014 		if (commit_id == NULL) {
3015 			error = got_error_from_errno("got_object_id_dup");
3016 			goto done;
3017 		}
3018 		error = got_object_id_str(&commit_id_str, commit_id);
3019 		if (error)
3020 			goto done;
3021 	}
3022 
3023 	error = got_pathlist_append(&paths, "", NULL);
3024 	if (error)
3025 		goto done;
3026 	cpa.worktree_path = worktree_path;
3027 	cpa.had_base_commit_ref_error = 0;
3028 	cpa.verbosity = verbosity;
3029 	error = got_worktree_checkout_files(worktree, &paths, repo,
3030 	    checkout_progress, &cpa, check_cancelled, NULL);
3031 	if (error != NULL)
3032 		goto done;
3033 
3034 	if (got_ref_is_symbolic(head_ref)) {
3035 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3036 		if (error)
3037 			goto done;
3038 		refname = got_ref_get_name(ref);
3039 	} else
3040 		refname = got_ref_get_name(head_ref);
3041 	printf("Checked out %s: %s\n", refname, commit_id_str);
3042 	printf("Now shut up and hack\n");
3043 	if (cpa.had_base_commit_ref_error)
3044 		show_worktree_base_ref_warning();
3045 done:
3046 	if (head_ref)
3047 		got_ref_close(head_ref);
3048 	if (ref)
3049 		got_ref_close(ref);
3050 	got_pathlist_free(&paths);
3051 	free(commit_id_str);
3052 	free(commit_id);
3053 	free(repo_path);
3054 	free(worktree_path);
3055 	free(cwd);
3056 	return error;
3057 }
3058 
3059 struct got_update_progress_arg {
3060 	int did_something;
3061 	int conflicts;
3062 	int obstructed;
3063 	int not_updated;
3064 	int missing;
3065 	int not_deleted;
3066 	int unversioned;
3067 	int verbosity;
3068 };
3069 
3070 void
3071 print_update_progress_stats(struct got_update_progress_arg *upa)
3072 {
3073 	if (!upa->did_something)
3074 		return;
3075 
3076 	if (upa->conflicts > 0)
3077 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3078 	if (upa->obstructed > 0)
3079 		printf("File paths obstructed by a non-regular file: %d\n",
3080 		    upa->obstructed);
3081 	if (upa->not_updated > 0)
3082 		printf("Files not updated because of existing merge "
3083 		    "conflicts: %d\n", upa->not_updated);
3084 }
3085 
3086 /*
3087  * The meaning of some status codes differs between merge-style operations and
3088  * update operations. For example, the ! status code means "file was missing"
3089  * if changes were merged into the work tree, and "missing file was restored"
3090  * if the work tree was updated. This function should be used by any operation
3091  * which merges changes into the work tree without updating the work tree.
3092  */
3093 void
3094 print_merge_progress_stats(struct got_update_progress_arg *upa)
3095 {
3096 	if (!upa->did_something)
3097 		return;
3098 
3099 	if (upa->conflicts > 0)
3100 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3101 	if (upa->obstructed > 0)
3102 		printf("File paths obstructed by a non-regular file: %d\n",
3103 		    upa->obstructed);
3104 	if (upa->missing > 0)
3105 		printf("Files which had incoming changes but could not be "
3106 		    "found in the work tree: %d\n", upa->missing);
3107 	if (upa->not_deleted > 0)
3108 		printf("Files not deleted due to differences in deleted "
3109 		    "content: %d\n", upa->not_deleted);
3110 	if (upa->unversioned > 0)
3111 		printf("Files not merged because an unversioned file was "
3112 		    "found in the work tree: %d\n", upa->unversioned);
3113 }
3114 
3115 __dead static void
3116 usage_update(void)
3117 {
3118 	fprintf(stderr, "usage: %s update [-b branch] [-c commit] [-q] "
3119 	    "[path ...]\n",
3120 	    getprogname());
3121 	exit(1);
3122 }
3123 
3124 static const struct got_error *
3125 update_progress(void *arg, unsigned char status, const char *path)
3126 {
3127 	struct got_update_progress_arg *upa = arg;
3128 
3129 	if (status == GOT_STATUS_EXISTS ||
3130 	    status == GOT_STATUS_BASE_REF_ERR)
3131 		return NULL;
3132 
3133 	upa->did_something = 1;
3134 
3135 	/* Base commit bump happens silently. */
3136 	if (status == GOT_STATUS_BUMP_BASE)
3137 		return NULL;
3138 
3139 	if (status == GOT_STATUS_CONFLICT)
3140 		upa->conflicts++;
3141 	if (status == GOT_STATUS_OBSTRUCTED)
3142 		upa->obstructed++;
3143 	if (status == GOT_STATUS_CANNOT_UPDATE)
3144 		upa->not_updated++;
3145 	if (status == GOT_STATUS_MISSING)
3146 		upa->missing++;
3147 	if (status == GOT_STATUS_CANNOT_DELETE)
3148 		upa->not_deleted++;
3149 	if (status == GOT_STATUS_UNVERSIONED)
3150 		upa->unversioned++;
3151 
3152 	while (path[0] == '/')
3153 		path++;
3154 	if (upa->verbosity >= 0)
3155 		printf("%c  %s\n", status, path);
3156 
3157 	return NULL;
3158 }
3159 
3160 static const struct got_error *
3161 switch_head_ref(struct got_reference *head_ref,
3162     struct got_object_id *commit_id, struct got_worktree *worktree,
3163     struct got_repository *repo)
3164 {
3165 	const struct got_error *err = NULL;
3166 	char *base_id_str;
3167 	int ref_has_moved = 0;
3168 
3169 	/* Trivial case: switching between two different references. */
3170 	if (strcmp(got_ref_get_name(head_ref),
3171 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3172 		printf("Switching work tree from %s to %s\n",
3173 		    got_worktree_get_head_ref_name(worktree),
3174 		    got_ref_get_name(head_ref));
3175 		return got_worktree_set_head_ref(worktree, head_ref);
3176 	}
3177 
3178 	err = check_linear_ancestry(commit_id,
3179 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3180 	if (err) {
3181 		if (err->code != GOT_ERR_ANCESTRY)
3182 			return err;
3183 		ref_has_moved = 1;
3184 	}
3185 	if (!ref_has_moved)
3186 		return NULL;
3187 
3188 	/* Switching to a rebased branch with the same reference name. */
3189 	err = got_object_id_str(&base_id_str,
3190 	    got_worktree_get_base_commit_id(worktree));
3191 	if (err)
3192 		return err;
3193 	printf("Reference %s now points at a different branch\n",
3194 	    got_worktree_get_head_ref_name(worktree));
3195 	printf("Switching work tree from %s to %s\n", base_id_str,
3196 	    got_worktree_get_head_ref_name(worktree));
3197 	return NULL;
3198 }
3199 
3200 static const struct got_error *
3201 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3202 {
3203 	const struct got_error *err;
3204 	int in_progress;
3205 
3206 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3207 	if (err)
3208 		return err;
3209 	if (in_progress)
3210 		return got_error(GOT_ERR_REBASING);
3211 
3212 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3213 	if (err)
3214 		return err;
3215 	if (in_progress)
3216 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3217 
3218 	return NULL;
3219 }
3220 
3221 static const struct got_error *
3222 check_merge_in_progress(struct got_worktree *worktree,
3223     struct got_repository *repo)
3224 {
3225 	const struct got_error *err;
3226 	int in_progress;
3227 
3228 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3229 	if (err)
3230 		return err;
3231 	if (in_progress)
3232 		return got_error(GOT_ERR_MERGE_BUSY);
3233 
3234 	return NULL;
3235 }
3236 
3237 static const struct got_error *
3238 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3239     char *argv[], struct got_worktree *worktree)
3240 {
3241 	const struct got_error *err = NULL;
3242 	char *path;
3243 	struct got_pathlist_entry *new;
3244 	int i;
3245 
3246 	if (argc == 0) {
3247 		path = strdup("");
3248 		if (path == NULL)
3249 			return got_error_from_errno("strdup");
3250 		return got_pathlist_append(paths, path, NULL);
3251 	}
3252 
3253 	for (i = 0; i < argc; i++) {
3254 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3255 		if (err)
3256 			break;
3257 		err = got_pathlist_insert(&new, paths, path, NULL);
3258 		if (err || new == NULL /* duplicate */) {
3259 			free(path);
3260 			if (err)
3261 				break;
3262 		}
3263 	}
3264 
3265 	return err;
3266 }
3267 
3268 static const struct got_error *
3269 wrap_not_worktree_error(const struct got_error *orig_err,
3270     const char *cmdname, const char *path)
3271 {
3272 	const struct got_error *err;
3273 	struct got_repository *repo;
3274 	static char msg[512];
3275 
3276 	err = got_repo_open(&repo, path, NULL);
3277 	if (err)
3278 		return orig_err;
3279 
3280 	snprintf(msg, sizeof(msg),
3281 	    "'got %s' needs a work tree in addition to a git repository\n"
3282 	    "Work trees can be checked out from this Git repository with "
3283 	    "'got checkout'.\n"
3284 	    "The got(1) manual page contains more information.", cmdname);
3285 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3286 	got_repo_close(repo);
3287 	return err;
3288 }
3289 
3290 static const struct got_error *
3291 cmd_update(int argc, char *argv[])
3292 {
3293 	const struct got_error *error = NULL;
3294 	struct got_repository *repo = NULL;
3295 	struct got_worktree *worktree = NULL;
3296 	char *worktree_path = NULL;
3297 	struct got_object_id *commit_id = NULL;
3298 	char *commit_id_str = NULL;
3299 	const char *branch_name = NULL;
3300 	struct got_reference *head_ref = NULL;
3301 	struct got_pathlist_head paths;
3302 	struct got_pathlist_entry *pe;
3303 	int ch, verbosity = 0;
3304 	struct got_update_progress_arg upa;
3305 
3306 	TAILQ_INIT(&paths);
3307 
3308 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3309 		switch (ch) {
3310 		case 'b':
3311 			branch_name = optarg;
3312 			break;
3313 		case 'c':
3314 			commit_id_str = strdup(optarg);
3315 			if (commit_id_str == NULL)
3316 				return got_error_from_errno("strdup");
3317 			break;
3318 		case 'q':
3319 			verbosity = -1;
3320 			break;
3321 		default:
3322 			usage_update();
3323 			/* NOTREACHED */
3324 		}
3325 	}
3326 
3327 	argc -= optind;
3328 	argv += optind;
3329 
3330 #ifndef PROFILE
3331 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3332 	    "unveil", NULL) == -1)
3333 		err(1, "pledge");
3334 #endif
3335 	worktree_path = getcwd(NULL, 0);
3336 	if (worktree_path == NULL) {
3337 		error = got_error_from_errno("getcwd");
3338 		goto done;
3339 	}
3340 	error = got_worktree_open(&worktree, worktree_path);
3341 	if (error) {
3342 		if (error->code == GOT_ERR_NOT_WORKTREE)
3343 			error = wrap_not_worktree_error(error, "update",
3344 			    worktree_path);
3345 		goto done;
3346 	}
3347 
3348 	error = check_rebase_or_histedit_in_progress(worktree);
3349 	if (error)
3350 		goto done;
3351 
3352 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3353 	    NULL);
3354 	if (error != NULL)
3355 		goto done;
3356 
3357 	error = apply_unveil(got_repo_get_path(repo), 0,
3358 	    got_worktree_get_root_path(worktree));
3359 	if (error)
3360 		goto done;
3361 
3362 	error = check_merge_in_progress(worktree, repo);
3363 	if (error)
3364 		goto done;
3365 
3366 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3367 	if (error)
3368 		goto done;
3369 
3370 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3371 	    got_worktree_get_head_ref_name(worktree), 0);
3372 	if (error != NULL)
3373 		goto done;
3374 	if (commit_id_str == NULL) {
3375 		error = got_ref_resolve(&commit_id, repo, head_ref);
3376 		if (error != NULL)
3377 			goto done;
3378 		error = got_object_id_str(&commit_id_str, commit_id);
3379 		if (error != NULL)
3380 			goto done;
3381 	} else {
3382 		struct got_reflist_head refs;
3383 		TAILQ_INIT(&refs);
3384 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3385 		    NULL);
3386 		if (error)
3387 			goto done;
3388 		error = got_repo_match_object_id(&commit_id, NULL,
3389 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3390 		got_ref_list_free(&refs);
3391 		free(commit_id_str);
3392 		commit_id_str = NULL;
3393 		if (error)
3394 			goto done;
3395 		error = got_object_id_str(&commit_id_str, commit_id);
3396 		if (error)
3397 			goto done;
3398 	}
3399 
3400 	if (branch_name) {
3401 		struct got_object_id *head_commit_id;
3402 		TAILQ_FOREACH(pe, &paths, entry) {
3403 			if (pe->path_len == 0)
3404 				continue;
3405 			error = got_error_msg(GOT_ERR_BAD_PATH,
3406 			    "switching between branches requires that "
3407 			    "the entire work tree gets updated");
3408 			goto done;
3409 		}
3410 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3411 		if (error)
3412 			goto done;
3413 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3414 		    repo);
3415 		free(head_commit_id);
3416 		if (error != NULL)
3417 			goto done;
3418 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3419 		if (error)
3420 			goto done;
3421 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3422 		if (error)
3423 			goto done;
3424 	} else {
3425 		error = check_linear_ancestry(commit_id,
3426 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3427 		if (error != NULL) {
3428 			if (error->code == GOT_ERR_ANCESTRY)
3429 				error = got_error(GOT_ERR_BRANCH_MOVED);
3430 			goto done;
3431 		}
3432 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3433 		if (error)
3434 			goto done;
3435 	}
3436 
3437 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3438 	    commit_id) != 0) {
3439 		error = got_worktree_set_base_commit_id(worktree, repo,
3440 		    commit_id);
3441 		if (error)
3442 			goto done;
3443 	}
3444 
3445 	memset(&upa, 0, sizeof(upa));
3446 	upa.verbosity = verbosity;
3447 	error = got_worktree_checkout_files(worktree, &paths, repo,
3448 	    update_progress, &upa, check_cancelled, NULL);
3449 	if (error != NULL)
3450 		goto done;
3451 
3452 	if (upa.did_something) {
3453 		printf("Updated to %s: %s\n",
3454 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3455 	} else
3456 		printf("Already up-to-date\n");
3457 	print_update_progress_stats(&upa);
3458 done:
3459 	free(worktree_path);
3460 	TAILQ_FOREACH(pe, &paths, entry)
3461 		free((char *)pe->path);
3462 	got_pathlist_free(&paths);
3463 	free(commit_id);
3464 	free(commit_id_str);
3465 	return error;
3466 }
3467 
3468 static const struct got_error *
3469 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3470     const char *path, int diff_context, int ignore_whitespace,
3471     int force_text_diff, struct got_repository *repo)
3472 {
3473 	const struct got_error *err = NULL;
3474 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3475 
3476 	if (blob_id1) {
3477 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192);
3478 		if (err)
3479 			goto done;
3480 	}
3481 
3482 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192);
3483 	if (err)
3484 		goto done;
3485 
3486 	while (path[0] == '/')
3487 		path++;
3488 	err = got_diff_blob(NULL, NULL, blob1, blob2, path, path,
3489 	    diff_context, ignore_whitespace, force_text_diff, stdout);
3490 done:
3491 	if (blob1)
3492 		got_object_blob_close(blob1);
3493 	got_object_blob_close(blob2);
3494 	return err;
3495 }
3496 
3497 static const struct got_error *
3498 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3499     const char *path, int diff_context, int ignore_whitespace,
3500     int force_text_diff, struct got_repository *repo)
3501 {
3502 	const struct got_error *err = NULL;
3503 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3504 	struct got_diff_blob_output_unidiff_arg arg;
3505 
3506 	if (tree_id1) {
3507 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3508 		if (err)
3509 			goto done;
3510 	}
3511 
3512 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3513 	if (err)
3514 		goto done;
3515 
3516 	arg.diff_context = diff_context;
3517 	arg.ignore_whitespace = ignore_whitespace;
3518 	arg.force_text_diff = force_text_diff;
3519 	arg.outfile = stdout;
3520 	arg.line_offsets = NULL;
3521 	arg.nlines = 0;
3522 	while (path[0] == '/')
3523 		path++;
3524 	err = got_diff_tree(tree1, tree2, path, path, repo,
3525 	    got_diff_blob_output_unidiff, &arg, 1);
3526 done:
3527 	if (tree1)
3528 		got_object_tree_close(tree1);
3529 	if (tree2)
3530 		got_object_tree_close(tree2);
3531 	return err;
3532 }
3533 
3534 static const struct got_error *
3535 get_changed_paths(struct got_pathlist_head *paths,
3536     struct got_commit_object *commit, struct got_repository *repo)
3537 {
3538 	const struct got_error *err = NULL;
3539 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3540 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3541 	struct got_object_qid *qid;
3542 
3543 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3544 	if (qid != NULL) {
3545 		struct got_commit_object *pcommit;
3546 		err = got_object_open_as_commit(&pcommit, repo,
3547 		    qid->id);
3548 		if (err)
3549 			return err;
3550 
3551 		tree_id1 = got_object_id_dup(
3552 		    got_object_commit_get_tree_id(pcommit));
3553 		if (tree_id1 == NULL) {
3554 			got_object_commit_close(pcommit);
3555 			return got_error_from_errno("got_object_id_dup");
3556 		}
3557 		got_object_commit_close(pcommit);
3558 
3559 	}
3560 
3561 	if (tree_id1) {
3562 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3563 		if (err)
3564 			goto done;
3565 	}
3566 
3567 	tree_id2 = got_object_commit_get_tree_id(commit);
3568 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3569 	if (err)
3570 		goto done;
3571 
3572 	err = got_diff_tree(tree1, tree2, "", "", repo,
3573 	    got_diff_tree_collect_changed_paths, paths, 0);
3574 done:
3575 	if (tree1)
3576 		got_object_tree_close(tree1);
3577 	if (tree2)
3578 		got_object_tree_close(tree2);
3579 	free(tree_id1);
3580 	return err;
3581 }
3582 
3583 static const struct got_error *
3584 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3585     const char *path, int diff_context, struct got_repository *repo)
3586 {
3587 	const struct got_error *err = NULL;
3588 	struct got_commit_object *pcommit = NULL;
3589 	char *id_str1 = NULL, *id_str2 = NULL;
3590 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3591 	struct got_object_qid *qid;
3592 
3593 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3594 	if (qid != NULL) {
3595 		err = got_object_open_as_commit(&pcommit, repo,
3596 		    qid->id);
3597 		if (err)
3598 			return err;
3599 	}
3600 
3601 	if (path && path[0] != '\0') {
3602 		int obj_type;
3603 		err = got_object_id_by_path(&obj_id2, repo, id, path);
3604 		if (err)
3605 			goto done;
3606 		err = got_object_id_str(&id_str2, obj_id2);
3607 		if (err) {
3608 			free(obj_id2);
3609 			goto done;
3610 		}
3611 		if (pcommit) {
3612 			err = got_object_id_by_path(&obj_id1, repo,
3613 			    qid->id, path);
3614 			if (err) {
3615 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3616 					free(obj_id2);
3617 					goto done;
3618 				}
3619 			} else {
3620 				err = got_object_id_str(&id_str1, obj_id1);
3621 				if (err) {
3622 					free(obj_id2);
3623 					goto done;
3624 				}
3625 			}
3626 		}
3627 		err = got_object_get_type(&obj_type, repo, obj_id2);
3628 		if (err) {
3629 			free(obj_id2);
3630 			goto done;
3631 		}
3632 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3633 		switch (obj_type) {
3634 		case GOT_OBJ_TYPE_BLOB:
3635 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3636 			    0, 0, repo);
3637 			break;
3638 		case GOT_OBJ_TYPE_TREE:
3639 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3640 			    0, 0, repo);
3641 			break;
3642 		default:
3643 			err = got_error(GOT_ERR_OBJ_TYPE);
3644 			break;
3645 		}
3646 		free(obj_id1);
3647 		free(obj_id2);
3648 	} else {
3649 		obj_id2 = got_object_commit_get_tree_id(commit);
3650 		err = got_object_id_str(&id_str2, obj_id2);
3651 		if (err)
3652 			goto done;
3653 		if (pcommit) {
3654 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3655 			err = got_object_id_str(&id_str1, obj_id1);
3656 			if (err)
3657 				goto done;
3658 		}
3659 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null",
3660 		    id_str2);
3661 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3662 		    repo);
3663 	}
3664 done:
3665 	free(id_str1);
3666 	free(id_str2);
3667 	if (pcommit)
3668 		got_object_commit_close(pcommit);
3669 	return err;
3670 }
3671 
3672 static char *
3673 get_datestr(time_t *time, char *datebuf)
3674 {
3675 	struct tm mytm, *tm;
3676 	char *p, *s;
3677 
3678 	tm = gmtime_r(time, &mytm);
3679 	if (tm == NULL)
3680 		return NULL;
3681 	s = asctime_r(tm, datebuf);
3682 	if (s == NULL)
3683 		return NULL;
3684 	p = strchr(s, '\n');
3685 	if (p)
3686 		*p = '\0';
3687 	return s;
3688 }
3689 
3690 static const struct got_error *
3691 match_logmsg(int *have_match, struct got_object_id *id,
3692     struct got_commit_object *commit, regex_t *regex)
3693 {
3694 	const struct got_error *err = NULL;
3695 	regmatch_t regmatch;
3696 	char *id_str = NULL, *logmsg = NULL;
3697 
3698 	*have_match = 0;
3699 
3700 	err = got_object_id_str(&id_str, id);
3701 	if (err)
3702 		return err;
3703 
3704 	err = got_object_commit_get_logmsg(&logmsg, commit);
3705 	if (err)
3706 		goto done;
3707 
3708 	if (regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3709 		*have_match = 1;
3710 done:
3711 	free(id_str);
3712 	free(logmsg);
3713 	return err;
3714 }
3715 
3716 static void
3717 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3718     regex_t *regex)
3719 {
3720 	regmatch_t regmatch;
3721 	struct got_pathlist_entry *pe;
3722 
3723 	*have_match = 0;
3724 
3725 	TAILQ_FOREACH(pe, changed_paths, entry) {
3726 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3727 			*have_match = 1;
3728 			break;
3729 		}
3730 	}
3731 }
3732 
3733 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3734 
3735 static const struct got_error*
3736 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3737     struct got_object_id *id, struct got_repository *repo)
3738 {
3739 	static const struct got_error *err = NULL;
3740 	struct got_reflist_entry *re;
3741 	char *s;
3742 	const char *name;
3743 
3744 	*refs_str = NULL;
3745 
3746 	TAILQ_FOREACH(re, refs, entry) {
3747 		struct got_tag_object *tag = NULL;
3748 		struct got_object_id *ref_id;
3749 		int cmp;
3750 
3751 		name = got_ref_get_name(re->ref);
3752 		if (strcmp(name, GOT_REF_HEAD) == 0)
3753 			continue;
3754 		if (strncmp(name, "refs/", 5) == 0)
3755 			name += 5;
3756 		if (strncmp(name, "got/", 4) == 0)
3757 			continue;
3758 		if (strncmp(name, "heads/", 6) == 0)
3759 			name += 6;
3760 		if (strncmp(name, "remotes/", 8) == 0) {
3761 			name += 8;
3762 			s = strstr(name, "/" GOT_REF_HEAD);
3763 			if (s != NULL && s[strlen(s)] == '\0')
3764 				continue;
3765 		}
3766 		err = got_ref_resolve(&ref_id, repo, re->ref);
3767 		if (err)
3768 			break;
3769 		if (strncmp(name, "tags/", 5) == 0) {
3770 			err = got_object_open_as_tag(&tag, repo, ref_id);
3771 			if (err) {
3772 				if (err->code != GOT_ERR_OBJ_TYPE) {
3773 					free(ref_id);
3774 					break;
3775 				}
3776 				/* Ref points at something other than a tag. */
3777 				err = NULL;
3778 				tag = NULL;
3779 			}
3780 		}
3781 		cmp = got_object_id_cmp(tag ?
3782 		    got_object_tag_get_object_id(tag) : ref_id, id);
3783 		free(ref_id);
3784 		if (tag)
3785 			got_object_tag_close(tag);
3786 		if (cmp != 0)
3787 			continue;
3788 		s = *refs_str;
3789 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
3790 		    s ? ", " : "", name) == -1) {
3791 			err = got_error_from_errno("asprintf");
3792 			free(s);
3793 			*refs_str = NULL;
3794 			break;
3795 		}
3796 		free(s);
3797 	}
3798 
3799 	return err;
3800 }
3801 
3802 static const struct got_error *
3803 print_commit(struct got_commit_object *commit, struct got_object_id *id,
3804     struct got_repository *repo, const char *path,
3805     struct got_pathlist_head *changed_paths, int show_patch,
3806     int diff_context, struct got_reflist_object_id_map *refs_idmap,
3807     const char *custom_refs_str)
3808 {
3809 	const struct got_error *err = NULL;
3810 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
3811 	char datebuf[26];
3812 	time_t committer_time;
3813 	const char *author, *committer;
3814 	char *refs_str = NULL;
3815 
3816 	err = got_object_id_str(&id_str, id);
3817 	if (err)
3818 		return err;
3819 
3820 	if (custom_refs_str == NULL) {
3821 		struct got_reflist_head *refs;
3822 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
3823 		if (refs) {
3824 			err = build_refs_str(&refs_str, refs, id, repo);
3825 			if (err)
3826 				goto done;
3827 		}
3828 	}
3829 
3830 	printf(GOT_COMMIT_SEP_STR);
3831 	if (custom_refs_str)
3832 		printf("commit %s (%s)\n", id_str, custom_refs_str); 
3833 	else
3834 		printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
3835 		    refs_str ? refs_str : "", refs_str ? ")" : "");
3836 	free(id_str);
3837 	id_str = NULL;
3838 	free(refs_str);
3839 	refs_str = NULL;
3840 	printf("from: %s\n", got_object_commit_get_author(commit));
3841 	committer_time = got_object_commit_get_committer_time(commit);
3842 	datestr = get_datestr(&committer_time, datebuf);
3843 	if (datestr)
3844 		printf("date: %s UTC\n", datestr);
3845 	author = got_object_commit_get_author(commit);
3846 	committer = got_object_commit_get_committer(commit);
3847 	if (strcmp(author, committer) != 0)
3848 		printf("via: %s\n", committer);
3849 	if (got_object_commit_get_nparents(commit) > 1) {
3850 		const struct got_object_id_queue *parent_ids;
3851 		struct got_object_qid *qid;
3852 		int n = 1;
3853 		parent_ids = got_object_commit_get_parent_ids(commit);
3854 		STAILQ_FOREACH(qid, parent_ids, entry) {
3855 			err = got_object_id_str(&id_str, qid->id);
3856 			if (err)
3857 				goto done;
3858 			printf("parent %d: %s\n", n++, id_str);
3859 			free(id_str);
3860 			id_str = NULL;
3861 		}
3862 	}
3863 
3864 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3865 	if (err)
3866 		goto done;
3867 
3868 	logmsg = logmsg0;
3869 	do {
3870 		line = strsep(&logmsg, "\n");
3871 		if (line)
3872 			printf(" %s\n", line);
3873 	} while (line);
3874 	free(logmsg0);
3875 
3876 	if (changed_paths) {
3877 		struct got_pathlist_entry *pe;
3878 		TAILQ_FOREACH(pe, changed_paths, entry) {
3879 			struct got_diff_changed_path *cp = pe->data;
3880 			printf(" %c  %s\n", cp->status, pe->path);
3881 		}
3882 		printf("\n");
3883 	}
3884 	if (show_patch) {
3885 		err = print_patch(commit, id, path, diff_context, repo);
3886 		if (err == 0)
3887 			printf("\n");
3888 	}
3889 
3890 	if (fflush(stdout) != 0 && err == NULL)
3891 		err = got_error_from_errno("fflush");
3892 done:
3893 	free(id_str);
3894 	free(refs_str);
3895 	return err;
3896 }
3897 
3898 static const struct got_error *
3899 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
3900     struct got_repository *repo, const char *path, int show_changed_paths,
3901     int show_patch, const char *search_pattern, int diff_context, int limit,
3902     int log_branches, int reverse_display_order,
3903     struct got_reflist_object_id_map *refs_idmap)
3904 {
3905 	const struct got_error *err;
3906 	struct got_commit_graph *graph;
3907 	regex_t regex;
3908 	int have_match;
3909 	struct got_object_id_queue reversed_commits;
3910 	struct got_object_qid *qid;
3911 	struct got_commit_object *commit;
3912 	struct got_pathlist_head changed_paths;
3913 	struct got_pathlist_entry *pe;
3914 
3915 	STAILQ_INIT(&reversed_commits);
3916 	TAILQ_INIT(&changed_paths);
3917 
3918 	if (search_pattern && regcomp(&regex, search_pattern,
3919 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
3920 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
3921 
3922 	err = got_commit_graph_open(&graph, path, !log_branches);
3923 	if (err)
3924 		return err;
3925 	err = got_commit_graph_iter_start(graph, root_id, repo,
3926 	    check_cancelled, NULL);
3927 	if (err)
3928 		goto done;
3929 	for (;;) {
3930 		struct got_object_id *id;
3931 
3932 		if (sigint_received || sigpipe_received)
3933 			break;
3934 
3935 		err = got_commit_graph_iter_next(&id, graph, repo,
3936 		    check_cancelled, NULL);
3937 		if (err) {
3938 			if (err->code == GOT_ERR_ITER_COMPLETED)
3939 				err = NULL;
3940 			break;
3941 		}
3942 		if (id == NULL)
3943 			break;
3944 
3945 		err = got_object_open_as_commit(&commit, repo, id);
3946 		if (err)
3947 			break;
3948 
3949 		if (show_changed_paths && !reverse_display_order) {
3950 			err = get_changed_paths(&changed_paths, commit, repo);
3951 			if (err)
3952 				break;
3953 		}
3954 
3955 		if (search_pattern) {
3956 			err = match_logmsg(&have_match, id, commit, &regex);
3957 			if (err) {
3958 				got_object_commit_close(commit);
3959 				break;
3960 			}
3961 			if (have_match == 0 && show_changed_paths)
3962 				match_changed_paths(&have_match,
3963 				    &changed_paths, &regex);
3964 			if (have_match == 0) {
3965 				got_object_commit_close(commit);
3966 				TAILQ_FOREACH(pe, &changed_paths, entry) {
3967 					free((char *)pe->path);
3968 					free(pe->data);
3969 				}
3970 				got_pathlist_free(&changed_paths);
3971 				continue;
3972 			}
3973 		}
3974 
3975 		if (reverse_display_order) {
3976 			err = got_object_qid_alloc(&qid, id);
3977 			if (err)
3978 				break;
3979 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
3980 			got_object_commit_close(commit);
3981 		} else {
3982 			err = print_commit(commit, id, repo, path,
3983 			    show_changed_paths ? &changed_paths : NULL,
3984 			    show_patch, diff_context, refs_idmap, NULL);
3985 			got_object_commit_close(commit);
3986 			if (err)
3987 				break;
3988 		}
3989 		if ((limit && --limit == 0) ||
3990 		    (end_id && got_object_id_cmp(id, end_id) == 0))
3991 			break;
3992 
3993 		TAILQ_FOREACH(pe, &changed_paths, entry) {
3994 			free((char *)pe->path);
3995 			free(pe->data);
3996 		}
3997 		got_pathlist_free(&changed_paths);
3998 	}
3999 	if (reverse_display_order) {
4000 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4001 			err = got_object_open_as_commit(&commit, repo, qid->id);
4002 			if (err)
4003 				break;
4004 			if (show_changed_paths) {
4005 				err = get_changed_paths(&changed_paths,
4006 				    commit, repo);
4007 				if (err)
4008 					break;
4009 			}
4010 			err = print_commit(commit, qid->id, repo, path,
4011 			    show_changed_paths ? &changed_paths : NULL,
4012 			    show_patch, diff_context, refs_idmap, NULL);
4013 			got_object_commit_close(commit);
4014 			if (err)
4015 				break;
4016 			TAILQ_FOREACH(pe, &changed_paths, entry) {
4017 				free((char *)pe->path);
4018 				free(pe->data);
4019 			}
4020 			got_pathlist_free(&changed_paths);
4021 		}
4022 	}
4023 done:
4024 	while (!STAILQ_EMPTY(&reversed_commits)) {
4025 		qid = STAILQ_FIRST(&reversed_commits);
4026 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4027 		got_object_qid_free(qid);
4028 	}
4029 	TAILQ_FOREACH(pe, &changed_paths, entry) {
4030 		free((char *)pe->path);
4031 		free(pe->data);
4032 	}
4033 	got_pathlist_free(&changed_paths);
4034 	if (search_pattern)
4035 		regfree(&regex);
4036 	got_commit_graph_close(graph);
4037 	return err;
4038 }
4039 
4040 __dead static void
4041 usage_log(void)
4042 {
4043 	fprintf(stderr, "usage: %s log [-b] [-c commit] [-C number] [ -l N ] "
4044 	    "[-p] [-P] [-x commit] [-s search-pattern] [-r repository-path] "
4045 	    "[-R] [path]\n", getprogname());
4046 	exit(1);
4047 }
4048 
4049 static int
4050 get_default_log_limit(void)
4051 {
4052 	const char *got_default_log_limit;
4053 	long long n;
4054 	const char *errstr;
4055 
4056 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4057 	if (got_default_log_limit == NULL)
4058 		return 0;
4059 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4060 	if (errstr != NULL)
4061 		return 0;
4062 	return n;
4063 }
4064 
4065 static const struct got_error *
4066 cmd_log(int argc, char *argv[])
4067 {
4068 	const struct got_error *error;
4069 	struct got_repository *repo = NULL;
4070 	struct got_worktree *worktree = NULL;
4071 	struct got_object_id *start_id = NULL, *end_id = NULL;
4072 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4073 	const char *start_commit = NULL, *end_commit = NULL;
4074 	const char *search_pattern = NULL;
4075 	int diff_context = -1, ch;
4076 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4077 	int reverse_display_order = 0;
4078 	const char *errstr;
4079 	struct got_reflist_head refs;
4080 	struct got_reflist_object_id_map *refs_idmap = NULL;
4081 
4082 	TAILQ_INIT(&refs);
4083 
4084 #ifndef PROFILE
4085 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4086 	    NULL)
4087 	    == -1)
4088 		err(1, "pledge");
4089 #endif
4090 
4091 	limit = get_default_log_limit();
4092 
4093 	while ((ch = getopt(argc, argv, "bpPc:C:l:r:Rs:x:")) != -1) {
4094 		switch (ch) {
4095 		case 'p':
4096 			show_patch = 1;
4097 			break;
4098 		case 'P':
4099 			show_changed_paths = 1;
4100 			break;
4101 		case 'c':
4102 			start_commit = optarg;
4103 			break;
4104 		case 'C':
4105 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4106 			    &errstr);
4107 			if (errstr != NULL)
4108 				err(1, "-C option %s", errstr);
4109 			break;
4110 		case 'l':
4111 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4112 			if (errstr != NULL)
4113 				err(1, "-l option %s", errstr);
4114 			break;
4115 		case 'b':
4116 			log_branches = 1;
4117 			break;
4118 		case 'r':
4119 			repo_path = realpath(optarg, NULL);
4120 			if (repo_path == NULL)
4121 				return got_error_from_errno2("realpath",
4122 				    optarg);
4123 			got_path_strip_trailing_slashes(repo_path);
4124 			break;
4125 		case 'R':
4126 			reverse_display_order = 1;
4127 			break;
4128 		case 's':
4129 			search_pattern = optarg;
4130 			break;
4131 		case 'x':
4132 			end_commit = optarg;
4133 			break;
4134 		default:
4135 			usage_log();
4136 			/* NOTREACHED */
4137 		}
4138 	}
4139 
4140 	argc -= optind;
4141 	argv += optind;
4142 
4143 	if (diff_context == -1)
4144 		diff_context = 3;
4145 	else if (!show_patch)
4146 		errx(1, "-C requires -p");
4147 
4148 	cwd = getcwd(NULL, 0);
4149 	if (cwd == NULL) {
4150 		error = got_error_from_errno("getcwd");
4151 		goto done;
4152 	}
4153 
4154 	if (repo_path == NULL) {
4155 		error = got_worktree_open(&worktree, cwd);
4156 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4157 			goto done;
4158 		error = NULL;
4159 	}
4160 
4161 	if (argc == 1) {
4162 		if (worktree) {
4163 			error = got_worktree_resolve_path(&path, worktree,
4164 			    argv[0]);
4165 			if (error)
4166 				goto done;
4167 		} else {
4168 			path = strdup(argv[0]);
4169 			if (path == NULL) {
4170 				error = got_error_from_errno("strdup");
4171 				goto done;
4172 			}
4173 		}
4174 	} else if (argc != 0)
4175 		usage_log();
4176 
4177 	if (repo_path == NULL) {
4178 		repo_path = worktree ?
4179 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4180 	}
4181 	if (repo_path == NULL) {
4182 		error = got_error_from_errno("strdup");
4183 		goto done;
4184 	}
4185 
4186 	error = got_repo_open(&repo, repo_path, NULL);
4187 	if (error != NULL)
4188 		goto done;
4189 
4190 	error = apply_unveil(got_repo_get_path(repo), 1,
4191 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4192 	if (error)
4193 		goto done;
4194 
4195 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4196 	if (error)
4197 		goto done;
4198 
4199 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4200 	if (error)
4201 		goto done;
4202 
4203 	if (start_commit == NULL) {
4204 		struct got_reference *head_ref;
4205 		struct got_commit_object *commit = NULL;
4206 		error = got_ref_open(&head_ref, repo,
4207 		    worktree ? got_worktree_get_head_ref_name(worktree)
4208 		    : GOT_REF_HEAD, 0);
4209 		if (error != NULL)
4210 			goto done;
4211 		error = got_ref_resolve(&start_id, repo, head_ref);
4212 		got_ref_close(head_ref);
4213 		if (error != NULL)
4214 			goto done;
4215 		error = got_object_open_as_commit(&commit, repo,
4216 		    start_id);
4217 		if (error != NULL)
4218 			goto done;
4219 		got_object_commit_close(commit);
4220 	} else {
4221 		error = got_repo_match_object_id(&start_id, NULL,
4222 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4223 		if (error != NULL)
4224 			goto done;
4225 	}
4226 	if (end_commit != NULL) {
4227 		error = got_repo_match_object_id(&end_id, NULL,
4228 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4229 		if (error != NULL)
4230 			goto done;
4231 	}
4232 
4233 	if (worktree) {
4234 		/*
4235 		 * If a path was specified on the command line it was resolved
4236 		 * to a path in the work tree above. Prepend the work tree's
4237 		 * path prefix to obtain the corresponding in-repository path.
4238 		 */
4239 		if (path) {
4240 			const char *prefix;
4241 			prefix = got_worktree_get_path_prefix(worktree);
4242 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4243 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4244 				error = got_error_from_errno("asprintf");
4245 				goto done;
4246 			}
4247 		}
4248 	} else
4249 		error = got_repo_map_path(&in_repo_path, repo,
4250 		    path ? path : "");
4251 	if (error != NULL)
4252 		goto done;
4253 	if (in_repo_path) {
4254 		free(path);
4255 		path = in_repo_path;
4256 	}
4257 
4258 	error = print_commits(start_id, end_id, repo, path ? path : "",
4259 	    show_changed_paths, show_patch, search_pattern, diff_context,
4260 	    limit, log_branches, reverse_display_order, refs_idmap);
4261 done:
4262 	free(path);
4263 	free(repo_path);
4264 	free(cwd);
4265 	if (worktree)
4266 		got_worktree_close(worktree);
4267 	if (repo) {
4268 		const struct got_error *close_err = got_repo_close(repo);
4269 		if (error == NULL)
4270 			error = close_err;
4271 	}
4272 	if (refs_idmap)
4273 		got_reflist_object_id_map_free(refs_idmap);
4274 	got_ref_list_free(&refs);
4275 	return error;
4276 }
4277 
4278 __dead static void
4279 usage_diff(void)
4280 {
4281 	fprintf(stderr, "usage: %s diff [-a] [-c commit] [-C number] "
4282 	    "[-r repository-path] [-s] [-w] [-P] "
4283 	    "[object1 object2 | path ...]\n", getprogname());
4284 	exit(1);
4285 }
4286 
4287 struct print_diff_arg {
4288 	struct got_repository *repo;
4289 	struct got_worktree *worktree;
4290 	int diff_context;
4291 	const char *id_str;
4292 	int header_shown;
4293 	int diff_staged;
4294 	int ignore_whitespace;
4295 	int force_text_diff;
4296 };
4297 
4298 /*
4299  * Create a file which contains the target path of a symlink so we can feed
4300  * it as content to the diff engine.
4301  */
4302 static const struct got_error *
4303 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4304     const char *abspath)
4305 {
4306 	const struct got_error *err = NULL;
4307 	char target_path[PATH_MAX];
4308 	ssize_t target_len, outlen;
4309 
4310 	*fd = -1;
4311 
4312 	if (dirfd != -1) {
4313 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4314 		if (target_len == -1)
4315 			return got_error_from_errno2("readlinkat", abspath);
4316 	} else {
4317 		target_len = readlink(abspath, target_path, PATH_MAX);
4318 		if (target_len == -1)
4319 			return got_error_from_errno2("readlink", abspath);
4320 	}
4321 
4322 	*fd = got_opentempfd();
4323 	if (*fd == -1)
4324 		return got_error_from_errno("got_opentempfd");
4325 
4326 	outlen = write(*fd, target_path, target_len);
4327 	if (outlen == -1) {
4328 		err = got_error_from_errno("got_opentempfd");
4329 		goto done;
4330 	}
4331 
4332 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4333 		err = got_error_from_errno2("lseek", abspath);
4334 		goto done;
4335 	}
4336 done:
4337 	if (err) {
4338 		close(*fd);
4339 		*fd = -1;
4340 	}
4341 	return err;
4342 }
4343 
4344 static const struct got_error *
4345 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4346     const char *path, struct got_object_id *blob_id,
4347     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4348     int dirfd, const char *de_name)
4349 {
4350 	struct print_diff_arg *a = arg;
4351 	const struct got_error *err = NULL;
4352 	struct got_blob_object *blob1 = NULL;
4353 	int fd = -1;
4354 	FILE *f2 = NULL;
4355 	char *abspath = NULL, *label1 = NULL;
4356 	struct stat sb;
4357 
4358 	if (a->diff_staged) {
4359 		if (staged_status != GOT_STATUS_MODIFY &&
4360 		    staged_status != GOT_STATUS_ADD &&
4361 		    staged_status != GOT_STATUS_DELETE)
4362 			return NULL;
4363 	} else {
4364 		if (staged_status == GOT_STATUS_DELETE)
4365 			return NULL;
4366 		if (status == GOT_STATUS_NONEXISTENT)
4367 			return got_error_set_errno(ENOENT, path);
4368 		if (status != GOT_STATUS_MODIFY &&
4369 		    status != GOT_STATUS_ADD &&
4370 		    status != GOT_STATUS_DELETE &&
4371 		    status != GOT_STATUS_CONFLICT)
4372 			return NULL;
4373 	}
4374 
4375 	if (!a->header_shown) {
4376 		printf("diff %s %s%s\n", a->id_str,
4377 		    got_worktree_get_root_path(a->worktree),
4378 		    a->diff_staged ? " (staged changes)" : "");
4379 		a->header_shown = 1;
4380 	}
4381 
4382 	if (a->diff_staged) {
4383 		const char *label1 = NULL, *label2 = NULL;
4384 		switch (staged_status) {
4385 		case GOT_STATUS_MODIFY:
4386 			label1 = path;
4387 			label2 = path;
4388 			break;
4389 		case GOT_STATUS_ADD:
4390 			label2 = path;
4391 			break;
4392 		case GOT_STATUS_DELETE:
4393 			label1 = path;
4394 			break;
4395 		default:
4396 			return got_error(GOT_ERR_FILE_STATUS);
4397 		}
4398 		return got_diff_objects_as_blobs(NULL, NULL, blob_id,
4399 		    staged_blob_id, label1, label2, a->diff_context,
4400 		    a->ignore_whitespace, a->force_text_diff, a->repo, stdout);
4401 	}
4402 
4403 	if (staged_status == GOT_STATUS_ADD ||
4404 	    staged_status == GOT_STATUS_MODIFY) {
4405 		char *id_str;
4406 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4407 		    8192);
4408 		if (err)
4409 			goto done;
4410 		err = got_object_id_str(&id_str, staged_blob_id);
4411 		if (err)
4412 			goto done;
4413 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4414 			err = got_error_from_errno("asprintf");
4415 			free(id_str);
4416 			goto done;
4417 		}
4418 		free(id_str);
4419 	} else if (status != GOT_STATUS_ADD) {
4420 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192);
4421 		if (err)
4422 			goto done;
4423 	}
4424 
4425 	if (status != GOT_STATUS_DELETE) {
4426 		if (asprintf(&abspath, "%s/%s",
4427 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4428 			err = got_error_from_errno("asprintf");
4429 			goto done;
4430 		}
4431 
4432 		if (dirfd != -1) {
4433 			fd = openat(dirfd, de_name, O_RDONLY | O_NOFOLLOW);
4434 			if (fd == -1) {
4435 				if (!got_err_open_nofollow_on_symlink()) { 
4436 					err = got_error_from_errno2("openat",
4437 					    abspath);
4438 					goto done;
4439 				}
4440 				err = get_symlink_target_file(&fd, dirfd,
4441 				    de_name, abspath);
4442 				if (err)
4443 					goto done;
4444 			}
4445 		} else {
4446 			fd = open(abspath, O_RDONLY | O_NOFOLLOW);
4447 			if (fd == -1) {
4448 				if (!got_err_open_nofollow_on_symlink()) {
4449 					err = got_error_from_errno2("open",
4450 					    abspath);
4451 					goto done;
4452 				}
4453 				err = get_symlink_target_file(&fd, dirfd,
4454 				    de_name, abspath);
4455 				if (err)
4456 					goto done;
4457 			}
4458 		}
4459 		if (fstat(fd, &sb) == -1) {
4460 			err = got_error_from_errno2("fstat", abspath);
4461 			goto done;
4462 		}
4463 		f2 = fdopen(fd, "r");
4464 		if (f2 == NULL) {
4465 			err = got_error_from_errno2("fdopen", abspath);
4466 			goto done;
4467 		}
4468 		fd = -1;
4469 	} else
4470 		sb.st_size = 0;
4471 
4472 	err = got_diff_blob_file(blob1, label1, f2, sb.st_size, path,
4473 	    a->diff_context, a->ignore_whitespace, a->force_text_diff, stdout);
4474 done:
4475 	if (blob1)
4476 		got_object_blob_close(blob1);
4477 	if (f2 && fclose(f2) == EOF && err == NULL)
4478 		err = got_error_from_errno("fclose");
4479 	if (fd != -1 && close(fd) == -1 && err == NULL)
4480 		err = got_error_from_errno("close");
4481 	free(abspath);
4482 	return err;
4483 }
4484 
4485 static const struct got_error *
4486 cmd_diff(int argc, char *argv[])
4487 {
4488 	const struct got_error *error;
4489 	struct got_repository *repo = NULL;
4490 	struct got_worktree *worktree = NULL;
4491 	char *cwd = NULL, *repo_path = NULL;
4492 	const char *commit_args[2] = { NULL, NULL };
4493 	int ncommit_args = 0;
4494 	struct got_object_id *ids[2] = { NULL, NULL };
4495 	char *labels[2] = { NULL, NULL };
4496 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
4497 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
4498 	int force_text_diff = 0, force_path = 0, rflag = 0;
4499 	const char *errstr;
4500 	struct got_reflist_head refs;
4501 	struct got_pathlist_head paths;
4502 	struct got_pathlist_entry *pe;
4503 
4504 	TAILQ_INIT(&refs);
4505 	TAILQ_INIT(&paths);
4506 
4507 #ifndef PROFILE
4508 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4509 	    NULL) == -1)
4510 		err(1, "pledge");
4511 #endif
4512 
4513 	while ((ch = getopt(argc, argv, "ac:C:r:swP")) != -1) {
4514 		switch (ch) {
4515 		case 'a':
4516 			force_text_diff = 1;
4517 			break;
4518 		case 'c':
4519 			if (ncommit_args >= 2)
4520 				errx(1, "too many -c options used");
4521 			commit_args[ncommit_args++] = optarg;
4522 			break;
4523 		case 'C':
4524 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4525 			    &errstr);
4526 			if (errstr != NULL)
4527 				err(1, "-C option %s", errstr);
4528 			break;
4529 		case 'r':
4530 			repo_path = realpath(optarg, NULL);
4531 			if (repo_path == NULL)
4532 				return got_error_from_errno2("realpath",
4533 				    optarg);
4534 			got_path_strip_trailing_slashes(repo_path);
4535 			rflag = 1;
4536 			break;
4537 		case 's':
4538 			diff_staged = 1;
4539 			break;
4540 		case 'w':
4541 			ignore_whitespace = 1;
4542 			break;
4543 		case 'P':
4544 			force_path = 1;
4545 			break;
4546 		default:
4547 			usage_diff();
4548 			/* NOTREACHED */
4549 		}
4550 	}
4551 
4552 	argc -= optind;
4553 	argv += optind;
4554 
4555 	cwd = getcwd(NULL, 0);
4556 	if (cwd == NULL) {
4557 		error = got_error_from_errno("getcwd");
4558 		goto done;
4559 	}
4560 
4561 	if (repo_path == NULL) {
4562 		error = got_worktree_open(&worktree, cwd);
4563 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4564 			goto done;
4565 		else
4566 			error = NULL;
4567 		if (worktree) {
4568 			repo_path =
4569 			    strdup(got_worktree_get_repo_path(worktree));
4570 			if (repo_path == NULL) {
4571 				error = got_error_from_errno("strdup");
4572 				goto done;
4573 			}
4574 		} else {
4575 			repo_path = strdup(cwd);
4576 			if (repo_path == NULL) {
4577 				error = got_error_from_errno("strdup");
4578 				goto done;
4579 			}
4580 		}
4581 	}
4582 
4583 	error = got_repo_open(&repo, repo_path, NULL);
4584 	free(repo_path);
4585 	if (error != NULL)
4586 		goto done;
4587 
4588 	if (rflag || worktree == NULL || ncommit_args > 0) {
4589 		if (force_path) {
4590 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4591 			    "-P option can only be used when diffing "
4592 			    "a work tree");
4593 			goto done;
4594 		}
4595 		if (diff_staged) {
4596 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4597 			    "-s option can only be used when diffing "
4598 			    "a work tree");
4599 			goto done;
4600 		}
4601 	}
4602 
4603 	error = apply_unveil(got_repo_get_path(repo), 1,
4604 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4605 	if (error)
4606 		goto done;
4607 
4608 	if ((!force_path && argc == 2) || ncommit_args > 0) {
4609 		int obj_type = (ncommit_args > 0 ?
4610 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
4611 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
4612 		    NULL);
4613 		if (error)
4614 			goto done;
4615 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
4616 			const char *arg;
4617 			if (ncommit_args > 0)
4618 				arg = commit_args[i];
4619 			else
4620 				arg = argv[i];
4621 			error = got_repo_match_object_id(&ids[i], &labels[i],
4622 			    arg, obj_type, &refs, repo);
4623 			if (error) {
4624 				if (error->code != GOT_ERR_NOT_REF &&
4625 				    error->code != GOT_ERR_NO_OBJ)
4626 					goto done;
4627 				if (ncommit_args > 0)
4628 					goto done;
4629 				error = NULL;
4630 				break;
4631 			}
4632 		}
4633 	}
4634 
4635 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
4636 		struct print_diff_arg arg;
4637 		char *id_str;
4638 
4639 		if (worktree == NULL) {
4640 			if (argc == 2 && ids[0] == NULL) {
4641 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
4642 				goto done;
4643 			} else if (argc == 2 && ids[1] == NULL) {
4644 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
4645 				goto done;
4646 			} else if (argc > 0) {
4647 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
4648 				    "%s", "specified paths cannot be resolved");
4649 				goto done;
4650 			} else {
4651 				error = got_error(GOT_ERR_NOT_WORKTREE);
4652 				goto done;
4653 			}
4654 		}
4655 
4656 		error = get_worktree_paths_from_argv(&paths, argc, argv,
4657 		    worktree);
4658 		if (error)
4659 			goto done;
4660 
4661 		error = got_object_id_str(&id_str,
4662 		    got_worktree_get_base_commit_id(worktree));
4663 		if (error)
4664 			goto done;
4665 		arg.repo = repo;
4666 		arg.worktree = worktree;
4667 		arg.diff_context = diff_context;
4668 		arg.id_str = id_str;
4669 		arg.header_shown = 0;
4670 		arg.diff_staged = diff_staged;
4671 		arg.ignore_whitespace = ignore_whitespace;
4672 		arg.force_text_diff = force_text_diff;
4673 
4674 		error = got_worktree_status(worktree, &paths, repo, 0,
4675 		    print_diff, &arg, check_cancelled, NULL);
4676 		free(id_str);
4677 		goto done;
4678 	}
4679 
4680 	if (ncommit_args == 1) {
4681 		struct got_commit_object *commit;
4682 		error = got_object_open_as_commit(&commit, repo, ids[0]);
4683 		if (error)
4684 			goto done;
4685 
4686 		labels[1] = labels[0];
4687 		ids[1] = ids[0];
4688 		if (got_object_commit_get_nparents(commit) > 0) {
4689 			const struct got_object_id_queue *pids;
4690 			struct got_object_qid *pid;
4691 			pids = got_object_commit_get_parent_ids(commit);
4692 			pid = STAILQ_FIRST(pids);
4693 			ids[0] = got_object_id_dup(pid->id);
4694 			if (ids[0] == NULL) {
4695 				error = got_error_from_errno(
4696 				    "got_object_id_dup");
4697 				got_object_commit_close(commit);
4698 				goto done;
4699 			}
4700 			error = got_object_id_str(&labels[0], ids[0]);
4701 			if (error) {
4702 				got_object_commit_close(commit);
4703 				goto done;
4704 			}
4705 		} else {
4706 			ids[0] = NULL;
4707 			labels[0] = strdup("/dev/null");
4708 			if (labels[0] == NULL) {
4709 				error = got_error_from_errno("strdup");
4710 				got_object_commit_close(commit);
4711 				goto done;
4712 			}
4713 		}
4714 
4715 		got_object_commit_close(commit);
4716 	}
4717 
4718 	if (ncommit_args == 0 && argc > 2) {
4719 		error = got_error_msg(GOT_ERR_BAD_PATH,
4720 		    "path arguments cannot be used when diffing two objects");
4721 		goto done;
4722 	}
4723 
4724 	if (ids[0]) {
4725 		error = got_object_get_type(&type1, repo, ids[0]);
4726 		if (error)
4727 			goto done;
4728 	}
4729 
4730 	error = got_object_get_type(&type2, repo, ids[1]);
4731 	if (error)
4732 		goto done;
4733 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
4734 		error = got_error(GOT_ERR_OBJ_TYPE);
4735 		goto done;
4736 	}
4737 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 0) {
4738 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
4739 		    "path arguments cannot be used when diffing blobs");
4740 		goto done;
4741 	}
4742 
4743 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
4744 		char *in_repo_path;
4745 		struct got_pathlist_entry *new;
4746 		if (worktree) {
4747 			const char *prefix;
4748 			char *p;
4749 			error = got_worktree_resolve_path(&p, worktree,
4750 			    argv[i]);
4751 			if (error)
4752 				goto done;
4753 			prefix = got_worktree_get_path_prefix(worktree);
4754 			while (prefix[0] == '/')
4755 				prefix++;
4756 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4757 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
4758 			    p) == -1) {
4759 				error = got_error_from_errno("asprintf");
4760 				free(p);
4761 				goto done;
4762 			}
4763 			free(p);
4764 		} else {
4765 			char *mapped_path, *s;
4766 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
4767 			if (error)
4768 				goto done;
4769 			s = mapped_path;
4770 			while (s[0] == '/')
4771 				s++;
4772 			in_repo_path = strdup(s);
4773 			if (in_repo_path == NULL) {
4774 				error = got_error_from_errno("asprintf");
4775 				free(mapped_path);
4776 				goto done;
4777 			}
4778 			free(mapped_path);
4779 
4780 		}
4781 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
4782 		if (error || new == NULL /* duplicate */)
4783 			free(in_repo_path);
4784 		if (error)
4785 			goto done;
4786 	}
4787 
4788 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
4789 	case GOT_OBJ_TYPE_BLOB:
4790 		error = got_diff_objects_as_blobs(NULL, NULL, ids[0], ids[1],
4791 		    NULL, NULL, diff_context, ignore_whitespace,
4792 		    force_text_diff, repo, stdout);
4793 		break;
4794 	case GOT_OBJ_TYPE_TREE:
4795 		error = got_diff_objects_as_trees(NULL, NULL, ids[0], ids[1],
4796 		    &paths, "", "", diff_context, ignore_whitespace,
4797 		    force_text_diff, repo, stdout);
4798 		break;
4799 	case GOT_OBJ_TYPE_COMMIT:
4800 		printf("diff %s %s\n", labels[0], labels[1]);
4801 		error = got_diff_objects_as_commits(NULL, NULL, ids[0], ids[1],
4802 		    &paths, diff_context, ignore_whitespace, force_text_diff,
4803 		    repo, stdout);
4804 		break;
4805 	default:
4806 		error = got_error(GOT_ERR_OBJ_TYPE);
4807 	}
4808 done:
4809 	free(labels[0]);
4810 	free(labels[1]);
4811 	free(ids[0]);
4812 	free(ids[1]);
4813 	if (worktree)
4814 		got_worktree_close(worktree);
4815 	if (repo) {
4816 		const struct got_error *close_err = got_repo_close(repo);
4817 		if (error == NULL)
4818 			error = close_err;
4819 	}
4820 	TAILQ_FOREACH(pe, &paths, entry)
4821 		free((char *)pe->path);
4822 	got_pathlist_free(&paths);
4823 	got_ref_list_free(&refs);
4824 	return error;
4825 }
4826 
4827 __dead static void
4828 usage_blame(void)
4829 {
4830 	fprintf(stderr,
4831 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
4832 	    getprogname());
4833 	exit(1);
4834 }
4835 
4836 struct blame_line {
4837 	int annotated;
4838 	char *id_str;
4839 	char *committer;
4840 	char datebuf[11]; /* YYYY-MM-DD + NUL */
4841 };
4842 
4843 struct blame_cb_args {
4844 	struct blame_line *lines;
4845 	int nlines;
4846 	int nlines_prec;
4847 	int lineno_cur;
4848 	off_t *line_offsets;
4849 	FILE *f;
4850 	struct got_repository *repo;
4851 };
4852 
4853 static const struct got_error *
4854 blame_cb(void *arg, int nlines, int lineno, struct got_object_id *id)
4855 {
4856 	const struct got_error *err = NULL;
4857 	struct blame_cb_args *a = arg;
4858 	struct blame_line *bline;
4859 	char *line = NULL;
4860 	size_t linesize = 0;
4861 	struct got_commit_object *commit = NULL;
4862 	off_t offset;
4863 	struct tm tm;
4864 	time_t committer_time;
4865 
4866 	if (nlines != a->nlines ||
4867 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
4868 		return got_error(GOT_ERR_RANGE);
4869 
4870 	if (sigint_received)
4871 		return got_error(GOT_ERR_ITER_COMPLETED);
4872 
4873 	if (lineno == -1)
4874 		return NULL; /* no change in this commit */
4875 
4876 	/* Annotate this line. */
4877 	bline = &a->lines[lineno - 1];
4878 	if (bline->annotated)
4879 		return NULL;
4880 	err = got_object_id_str(&bline->id_str, id);
4881 	if (err)
4882 		return err;
4883 
4884 	err = got_object_open_as_commit(&commit, a->repo, id);
4885 	if (err)
4886 		goto done;
4887 
4888 	bline->committer = strdup(got_object_commit_get_committer(commit));
4889 	if (bline->committer == NULL) {
4890 		err = got_error_from_errno("strdup");
4891 		goto done;
4892 	}
4893 
4894 	committer_time = got_object_commit_get_committer_time(commit);
4895 	if (gmtime_r(&committer_time, &tm) == NULL)
4896 		return got_error_from_errno("gmtime_r");
4897 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
4898 	    &tm) == 0) {
4899 		err = got_error(GOT_ERR_NO_SPACE);
4900 		goto done;
4901 	}
4902 	bline->annotated = 1;
4903 
4904 	/* Print lines annotated so far. */
4905 	bline = &a->lines[a->lineno_cur - 1];
4906 	if (!bline->annotated)
4907 		goto done;
4908 
4909 	offset = a->line_offsets[a->lineno_cur - 1];
4910 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
4911 		err = got_error_from_errno("fseeko");
4912 		goto done;
4913 	}
4914 
4915 	while (bline->annotated) {
4916 		char *smallerthan, *at, *nl, *committer;
4917 		size_t len;
4918 
4919 		if (getline(&line, &linesize, a->f) == -1) {
4920 			if (ferror(a->f))
4921 				err = got_error_from_errno("getline");
4922 			break;
4923 		}
4924 
4925 		committer = bline->committer;
4926 		smallerthan = strchr(committer, '<');
4927 		if (smallerthan && smallerthan[1] != '\0')
4928 			committer = smallerthan + 1;
4929 		at = strchr(committer, '@');
4930 		if (at)
4931 			*at = '\0';
4932 		len = strlen(committer);
4933 		if (len >= 9)
4934 			committer[8] = '\0';
4935 
4936 		nl = strchr(line, '\n');
4937 		if (nl)
4938 			*nl = '\0';
4939 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
4940 		    bline->id_str, bline->datebuf, committer, line);
4941 
4942 		a->lineno_cur++;
4943 		bline = &a->lines[a->lineno_cur - 1];
4944 	}
4945 done:
4946 	if (commit)
4947 		got_object_commit_close(commit);
4948 	free(line);
4949 	return err;
4950 }
4951 
4952 static const struct got_error *
4953 cmd_blame(int argc, char *argv[])
4954 {
4955 	const struct got_error *error;
4956 	struct got_repository *repo = NULL;
4957 	struct got_worktree *worktree = NULL;
4958 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
4959 	char *link_target = NULL;
4960 	struct got_object_id *obj_id = NULL;
4961 	struct got_object_id *commit_id = NULL;
4962 	struct got_blob_object *blob = NULL;
4963 	char *commit_id_str = NULL;
4964 	struct blame_cb_args bca;
4965 	int ch, obj_type, i;
4966 	off_t filesize;
4967 
4968 	memset(&bca, 0, sizeof(bca));
4969 
4970 #ifndef PROFILE
4971 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4972 	    NULL) == -1)
4973 		err(1, "pledge");
4974 #endif
4975 
4976 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
4977 		switch (ch) {
4978 		case 'c':
4979 			commit_id_str = optarg;
4980 			break;
4981 		case 'r':
4982 			repo_path = realpath(optarg, NULL);
4983 			if (repo_path == NULL)
4984 				return got_error_from_errno2("realpath",
4985 				    optarg);
4986 			got_path_strip_trailing_slashes(repo_path);
4987 			break;
4988 		default:
4989 			usage_blame();
4990 			/* NOTREACHED */
4991 		}
4992 	}
4993 
4994 	argc -= optind;
4995 	argv += optind;
4996 
4997 	if (argc == 1)
4998 		path = argv[0];
4999 	else
5000 		usage_blame();
5001 
5002 	cwd = getcwd(NULL, 0);
5003 	if (cwd == NULL) {
5004 		error = got_error_from_errno("getcwd");
5005 		goto done;
5006 	}
5007 	if (repo_path == NULL) {
5008 		error = got_worktree_open(&worktree, cwd);
5009 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5010 			goto done;
5011 		else
5012 			error = NULL;
5013 		if (worktree) {
5014 			repo_path =
5015 			    strdup(got_worktree_get_repo_path(worktree));
5016 			if (repo_path == NULL) {
5017 				error = got_error_from_errno("strdup");
5018 				if (error)
5019 					goto done;
5020 			}
5021 		} else {
5022 			repo_path = strdup(cwd);
5023 			if (repo_path == NULL) {
5024 				error = got_error_from_errno("strdup");
5025 				goto done;
5026 			}
5027 		}
5028 	}
5029 
5030 	error = got_repo_open(&repo, repo_path, NULL);
5031 	if (error != NULL)
5032 		goto done;
5033 
5034 	if (worktree) {
5035 		const char *prefix = got_worktree_get_path_prefix(worktree);
5036 		char *p;
5037 
5038 		error = got_worktree_resolve_path(&p, worktree, path);
5039 		if (error)
5040 			goto done;
5041 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5042 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5043 		    p) == -1) {
5044 			error = got_error_from_errno("asprintf");
5045 			free(p);
5046 			goto done;
5047 		}
5048 		free(p);
5049 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5050 	} else {
5051 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5052 		if (error)
5053 			goto done;
5054 		error = got_repo_map_path(&in_repo_path, repo, path);
5055 	}
5056 	if (error)
5057 		goto done;
5058 
5059 	if (commit_id_str == NULL) {
5060 		struct got_reference *head_ref;
5061 		error = got_ref_open(&head_ref, repo, worktree ?
5062 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5063 		if (error != NULL)
5064 			goto done;
5065 		error = got_ref_resolve(&commit_id, repo, head_ref);
5066 		got_ref_close(head_ref);
5067 		if (error != NULL)
5068 			goto done;
5069 	} else {
5070 		struct got_reflist_head refs;
5071 		TAILQ_INIT(&refs);
5072 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5073 		    NULL);
5074 		if (error)
5075 			goto done;
5076 		error = got_repo_match_object_id(&commit_id, NULL,
5077 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5078 		got_ref_list_free(&refs);
5079 		if (error)
5080 			goto done;
5081 	}
5082 
5083 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5084 	    commit_id, repo);
5085 	if (error)
5086 		goto done;
5087 
5088 	error = got_object_id_by_path(&obj_id, repo, commit_id,
5089 	    link_target ? link_target : in_repo_path);
5090 	if (error)
5091 		goto done;
5092 
5093 	error = got_object_get_type(&obj_type, repo, obj_id);
5094 	if (error)
5095 		goto done;
5096 
5097 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5098 		error = got_error_path(link_target ? link_target : in_repo_path,
5099 		    GOT_ERR_OBJ_TYPE);
5100 		goto done;
5101 	}
5102 
5103 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192);
5104 	if (error)
5105 		goto done;
5106 	bca.f = got_opentemp();
5107 	if (bca.f == NULL) {
5108 		error = got_error_from_errno("got_opentemp");
5109 		goto done;
5110 	}
5111 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5112 	    &bca.line_offsets, bca.f, blob);
5113 	if (error || bca.nlines == 0)
5114 		goto done;
5115 
5116 	/* Don't include \n at EOF in the blame line count. */
5117 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5118 		bca.nlines--;
5119 
5120 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5121 	if (bca.lines == NULL) {
5122 		error = got_error_from_errno("calloc");
5123 		goto done;
5124 	}
5125 	bca.lineno_cur = 1;
5126 	bca.nlines_prec = 0;
5127 	i = bca.nlines;
5128 	while (i > 0) {
5129 		i /= 10;
5130 		bca.nlines_prec++;
5131 	}
5132 	bca.repo = repo;
5133 
5134 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5135 	    repo, blame_cb, &bca, check_cancelled, NULL);
5136 done:
5137 	free(in_repo_path);
5138 	free(link_target);
5139 	free(repo_path);
5140 	free(cwd);
5141 	free(commit_id);
5142 	free(obj_id);
5143 	if (blob)
5144 		got_object_blob_close(blob);
5145 	if (worktree)
5146 		got_worktree_close(worktree);
5147 	if (repo) {
5148 		const struct got_error *close_err = got_repo_close(repo);
5149 		if (error == NULL)
5150 			error = close_err;
5151 	}
5152 	if (bca.lines) {
5153 		for (i = 0; i < bca.nlines; i++) {
5154 			struct blame_line *bline = &bca.lines[i];
5155 			free(bline->id_str);
5156 			free(bline->committer);
5157 		}
5158 		free(bca.lines);
5159 	}
5160 	free(bca.line_offsets);
5161 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5162 		error = got_error_from_errno("fclose");
5163 	return error;
5164 }
5165 
5166 __dead static void
5167 usage_tree(void)
5168 {
5169 	fprintf(stderr,
5170 	    "usage: %s tree [-c commit] [-r repository-path] [-iR] [path]\n",
5171 	    getprogname());
5172 	exit(1);
5173 }
5174 
5175 static const struct got_error *
5176 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5177     const char *root_path, struct got_repository *repo)
5178 {
5179 	const struct got_error *err = NULL;
5180 	int is_root_path = (strcmp(path, root_path) == 0);
5181 	const char *modestr = "";
5182 	mode_t mode = got_tree_entry_get_mode(te);
5183 	char *link_target = NULL;
5184 
5185 	path += strlen(root_path);
5186 	while (path[0] == '/')
5187 		path++;
5188 
5189 	if (got_object_tree_entry_is_submodule(te))
5190 		modestr = "$";
5191 	else if (S_ISLNK(mode)) {
5192 		int i;
5193 
5194 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5195 		if (err)
5196 			return err;
5197 		for (i = 0; i < strlen(link_target); i++) {
5198 			if (!isprint((unsigned char)link_target[i]))
5199 				link_target[i] = '?';
5200 		}
5201 
5202 		modestr = "@";
5203 	}
5204 	else if (S_ISDIR(mode))
5205 		modestr = "/";
5206 	else if (mode & S_IXUSR)
5207 		modestr = "*";
5208 
5209 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5210 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5211 	    link_target ? " -> ": "", link_target ? link_target : "");
5212 
5213 	free(link_target);
5214 	return NULL;
5215 }
5216 
5217 static const struct got_error *
5218 print_tree(const char *path, struct got_object_id *commit_id,
5219     int show_ids, int recurse, const char *root_path,
5220     struct got_repository *repo)
5221 {
5222 	const struct got_error *err = NULL;
5223 	struct got_object_id *tree_id = NULL;
5224 	struct got_tree_object *tree = NULL;
5225 	int nentries, i;
5226 
5227 	err = got_object_id_by_path(&tree_id, repo, commit_id, path);
5228 	if (err)
5229 		goto done;
5230 
5231 	err = got_object_open_as_tree(&tree, repo, tree_id);
5232 	if (err)
5233 		goto done;
5234 	nentries = got_object_tree_get_nentries(tree);
5235 	for (i = 0; i < nentries; i++) {
5236 		struct got_tree_entry *te;
5237 		char *id = NULL;
5238 
5239 		if (sigint_received || sigpipe_received)
5240 			break;
5241 
5242 		te = got_object_tree_get_entry(tree, i);
5243 		if (show_ids) {
5244 			char *id_str;
5245 			err = got_object_id_str(&id_str,
5246 			    got_tree_entry_get_id(te));
5247 			if (err)
5248 				goto done;
5249 			if (asprintf(&id, "%s ", id_str) == -1) {
5250 				err = got_error_from_errno("asprintf");
5251 				free(id_str);
5252 				goto done;
5253 			}
5254 			free(id_str);
5255 		}
5256 		err = print_entry(te, id, path, root_path, repo);
5257 		free(id);
5258 		if (err)
5259 			goto done;
5260 
5261 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5262 			char *child_path;
5263 			if (asprintf(&child_path, "%s%s%s", path,
5264 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5265 			    got_tree_entry_get_name(te)) == -1) {
5266 				err = got_error_from_errno("asprintf");
5267 				goto done;
5268 			}
5269 			err = print_tree(child_path, commit_id, show_ids, 1,
5270 			    root_path, repo);
5271 			free(child_path);
5272 			if (err)
5273 				goto done;
5274 		}
5275 	}
5276 done:
5277 	if (tree)
5278 		got_object_tree_close(tree);
5279 	free(tree_id);
5280 	return err;
5281 }
5282 
5283 static const struct got_error *
5284 cmd_tree(int argc, char *argv[])
5285 {
5286 	const struct got_error *error;
5287 	struct got_repository *repo = NULL;
5288 	struct got_worktree *worktree = NULL;
5289 	const char *path, *refname = NULL;
5290 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5291 	struct got_object_id *commit_id = NULL;
5292 	char *commit_id_str = NULL;
5293 	int show_ids = 0, recurse = 0;
5294 	int ch;
5295 
5296 #ifndef PROFILE
5297 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5298 	    NULL) == -1)
5299 		err(1, "pledge");
5300 #endif
5301 
5302 	while ((ch = getopt(argc, argv, "c:r:iR")) != -1) {
5303 		switch (ch) {
5304 		case 'c':
5305 			commit_id_str = optarg;
5306 			break;
5307 		case 'r':
5308 			repo_path = realpath(optarg, NULL);
5309 			if (repo_path == NULL)
5310 				return got_error_from_errno2("realpath",
5311 				    optarg);
5312 			got_path_strip_trailing_slashes(repo_path);
5313 			break;
5314 		case 'i':
5315 			show_ids = 1;
5316 			break;
5317 		case 'R':
5318 			recurse = 1;
5319 			break;
5320 		default:
5321 			usage_tree();
5322 			/* NOTREACHED */
5323 		}
5324 	}
5325 
5326 	argc -= optind;
5327 	argv += optind;
5328 
5329 	if (argc == 1)
5330 		path = argv[0];
5331 	else if (argc > 1)
5332 		usage_tree();
5333 	else
5334 		path = NULL;
5335 
5336 	cwd = getcwd(NULL, 0);
5337 	if (cwd == NULL) {
5338 		error = got_error_from_errno("getcwd");
5339 		goto done;
5340 	}
5341 	if (repo_path == NULL) {
5342 		error = got_worktree_open(&worktree, cwd);
5343 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5344 			goto done;
5345 		else
5346 			error = NULL;
5347 		if (worktree) {
5348 			repo_path =
5349 			    strdup(got_worktree_get_repo_path(worktree));
5350 			if (repo_path == NULL)
5351 				error = got_error_from_errno("strdup");
5352 			if (error)
5353 				goto done;
5354 		} else {
5355 			repo_path = strdup(cwd);
5356 			if (repo_path == NULL) {
5357 				error = got_error_from_errno("strdup");
5358 				goto done;
5359 			}
5360 		}
5361 	}
5362 
5363 	error = got_repo_open(&repo, repo_path, NULL);
5364 	if (error != NULL)
5365 		goto done;
5366 
5367 	if (worktree) {
5368 		const char *prefix = got_worktree_get_path_prefix(worktree);
5369 		char *p;
5370 
5371 		if (path == NULL)
5372 			path = "";
5373 		error = got_worktree_resolve_path(&p, worktree, path);
5374 		if (error)
5375 			goto done;
5376 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5377 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5378 		    p) == -1) {
5379 			error = got_error_from_errno("asprintf");
5380 			free(p);
5381 			goto done;
5382 		}
5383 		free(p);
5384 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5385 		if (error)
5386 			goto done;
5387 	} else {
5388 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5389 		if (error)
5390 			goto done;
5391 		if (path == NULL)
5392 			path = "/";
5393 		error = got_repo_map_path(&in_repo_path, repo, path);
5394 		if (error != NULL)
5395 			goto done;
5396 	}
5397 
5398 	if (commit_id_str == NULL) {
5399 		struct got_reference *head_ref;
5400 		if (worktree)
5401 			refname = got_worktree_get_head_ref_name(worktree);
5402 		else
5403 			refname = GOT_REF_HEAD;
5404 		error = got_ref_open(&head_ref, repo, refname, 0);
5405 		if (error != NULL)
5406 			goto done;
5407 		error = got_ref_resolve(&commit_id, repo, head_ref);
5408 		got_ref_close(head_ref);
5409 		if (error != NULL)
5410 			goto done;
5411 	} else {
5412 		struct got_reflist_head refs;
5413 		TAILQ_INIT(&refs);
5414 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5415 		    NULL);
5416 		if (error)
5417 			goto done;
5418 		error = got_repo_match_object_id(&commit_id, NULL,
5419 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5420 		got_ref_list_free(&refs);
5421 		if (error)
5422 			goto done;
5423 	}
5424 
5425 	error = print_tree(in_repo_path, commit_id, show_ids, recurse,
5426 	    in_repo_path, repo);
5427 done:
5428 	free(in_repo_path);
5429 	free(repo_path);
5430 	free(cwd);
5431 	free(commit_id);
5432 	if (worktree)
5433 		got_worktree_close(worktree);
5434 	if (repo) {
5435 		const struct got_error *close_err = got_repo_close(repo);
5436 		if (error == NULL)
5437 			error = close_err;
5438 	}
5439 	return error;
5440 }
5441 
5442 __dead static void
5443 usage_status(void)
5444 {
5445 	fprintf(stderr, "usage: %s status [-I] [-s status-codes ] "
5446 	    "[-S status-codes] [path ...]\n", getprogname());
5447 	exit(1);
5448 }
5449 
5450 struct got_status_arg {
5451 	char *status_codes;
5452 	int suppress;
5453 };
5454 
5455 static const struct got_error *
5456 print_status(void *arg, unsigned char status, unsigned char staged_status,
5457     const char *path, struct got_object_id *blob_id,
5458     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
5459     int dirfd, const char *de_name)
5460 {
5461 	struct got_status_arg *st = arg;
5462 
5463 	if (status == staged_status && (status == GOT_STATUS_DELETE))
5464 		status = GOT_STATUS_NO_CHANGE;
5465 	if (st != NULL && st->status_codes) {
5466 		size_t ncodes = strlen(st->status_codes);
5467 		int i, j = 0;
5468 
5469 		for (i = 0; i < ncodes ; i++) {
5470 			if (st->suppress) {
5471 				if (status == st->status_codes[i] ||
5472 				    staged_status == st->status_codes[i]) {
5473 					j++;
5474 					continue;
5475 				}
5476 			} else {
5477 				if (status == st->status_codes[i] ||
5478 				    staged_status == st->status_codes[i])
5479 					break;
5480 			}
5481 		}
5482 
5483 		if (st->suppress && j == 0)
5484 			goto print;
5485 
5486 		if (i == ncodes)
5487 			return NULL;
5488 	}
5489 print:
5490 	printf("%c%c %s\n", status, staged_status, path);
5491 	return NULL;
5492 }
5493 
5494 static const struct got_error *
5495 cmd_status(int argc, char *argv[])
5496 {
5497 	const struct got_error *error = NULL;
5498 	struct got_repository *repo = NULL;
5499 	struct got_worktree *worktree = NULL;
5500 	struct got_status_arg st;
5501 	char *cwd = NULL;
5502 	struct got_pathlist_head paths;
5503 	struct got_pathlist_entry *pe;
5504 	int ch, i, no_ignores = 0;
5505 
5506 	TAILQ_INIT(&paths);
5507 
5508 	memset(&st, 0, sizeof(st));
5509 	st.status_codes = NULL;
5510 	st.suppress = 0;
5511 
5512 	while ((ch = getopt(argc, argv, "Is:S:")) != -1) {
5513 		switch (ch) {
5514 		case 'I':
5515 			no_ignores = 1;
5516 			break;
5517 		case 'S':
5518 			if (st.status_codes != NULL && st.suppress == 0)
5519 				option_conflict('S', 's');
5520 			st.suppress = 1;
5521 			/* fallthrough */
5522 		case 's':
5523 			for (i = 0; i < strlen(optarg); i++) {
5524 				switch (optarg[i]) {
5525 				case GOT_STATUS_MODIFY:
5526 				case GOT_STATUS_ADD:
5527 				case GOT_STATUS_DELETE:
5528 				case GOT_STATUS_CONFLICT:
5529 				case GOT_STATUS_MISSING:
5530 				case GOT_STATUS_OBSTRUCTED:
5531 				case GOT_STATUS_UNVERSIONED:
5532 				case GOT_STATUS_MODE_CHANGE:
5533 				case GOT_STATUS_NONEXISTENT:
5534 					break;
5535 				default:
5536 					errx(1, "invalid status code '%c'",
5537 					    optarg[i]);
5538 				}
5539 			}
5540 			if (ch == 's' && st.suppress)
5541 				option_conflict('s', 'S');
5542 			st.status_codes = optarg;
5543 			break;
5544 		default:
5545 			usage_status();
5546 			/* NOTREACHED */
5547 		}
5548 	}
5549 
5550 	argc -= optind;
5551 	argv += optind;
5552 
5553 #ifndef PROFILE
5554 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5555 	    NULL) == -1)
5556 		err(1, "pledge");
5557 #endif
5558 	cwd = getcwd(NULL, 0);
5559 	if (cwd == NULL) {
5560 		error = got_error_from_errno("getcwd");
5561 		goto done;
5562 	}
5563 
5564 	error = got_worktree_open(&worktree, cwd);
5565 	if (error) {
5566 		if (error->code == GOT_ERR_NOT_WORKTREE)
5567 			error = wrap_not_worktree_error(error, "status", cwd);
5568 		goto done;
5569 	}
5570 
5571 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
5572 	    NULL);
5573 	if (error != NULL)
5574 		goto done;
5575 
5576 	error = apply_unveil(got_repo_get_path(repo), 1,
5577 	    got_worktree_get_root_path(worktree));
5578 	if (error)
5579 		goto done;
5580 
5581 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
5582 	if (error)
5583 		goto done;
5584 
5585 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
5586 	    print_status, &st, check_cancelled, NULL);
5587 done:
5588 	TAILQ_FOREACH(pe, &paths, entry)
5589 		free((char *)pe->path);
5590 	got_pathlist_free(&paths);
5591 	free(cwd);
5592 	return error;
5593 }
5594 
5595 __dead static void
5596 usage_ref(void)
5597 {
5598 	fprintf(stderr,
5599 	    "usage: %s ref [-r repository] [-l] [-c object] [-s reference] "
5600 	        "[-d] [name]\n",
5601 	    getprogname());
5602 	exit(1);
5603 }
5604 
5605 static const struct got_error *
5606 list_refs(struct got_repository *repo, const char *refname)
5607 {
5608 	static const struct got_error *err = NULL;
5609 	struct got_reflist_head refs;
5610 	struct got_reflist_entry *re;
5611 
5612 	TAILQ_INIT(&refs);
5613 	err = got_ref_list(&refs, repo, refname, got_ref_cmp_by_name, NULL);
5614 	if (err)
5615 		return err;
5616 
5617 	TAILQ_FOREACH(re, &refs, entry) {
5618 		char *refstr;
5619 		refstr = got_ref_to_str(re->ref);
5620 		if (refstr == NULL)
5621 			return got_error_from_errno("got_ref_to_str");
5622 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
5623 		free(refstr);
5624 	}
5625 
5626 	got_ref_list_free(&refs);
5627 	return NULL;
5628 }
5629 
5630 static const struct got_error *
5631 delete_ref_by_name(struct got_repository *repo, const char *refname)
5632 {
5633 	const struct got_error *err;
5634 	struct got_reference *ref;
5635 
5636 	err = got_ref_open(&ref, repo, refname, 0);
5637 	if (err)
5638 		return err;
5639 
5640 	err = delete_ref(repo, ref);
5641 	got_ref_close(ref);
5642 	return err;
5643 }
5644 
5645 static const struct got_error *
5646 add_ref(struct got_repository *repo, const char *refname, const char *target)
5647 {
5648 	const struct got_error *err = NULL;
5649 	struct got_object_id *id;
5650 	struct got_reference *ref = NULL;
5651 
5652 	/*
5653 	 * Don't let the user create a reference name with a leading '-'.
5654 	 * While technically a valid reference name, this case is usually
5655 	 * an unintended typo.
5656 	 */
5657 	if (refname[0] == '-')
5658 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5659 
5660 	err = got_repo_match_object_id_prefix(&id, target, GOT_OBJ_TYPE_ANY,
5661 	    repo);
5662 	if (err) {
5663 		struct got_reference *target_ref;
5664 
5665 		if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
5666 			return err;
5667 		err = got_ref_open(&target_ref, repo, target, 0);
5668 		if (err)
5669 			return err;
5670 		err = got_ref_resolve(&id, repo, target_ref);
5671 		got_ref_close(target_ref);
5672 		if (err)
5673 			return err;
5674 	}
5675 
5676 	err = got_ref_alloc(&ref, refname, id);
5677 	if (err)
5678 		goto done;
5679 
5680 	err = got_ref_write(ref, repo);
5681 done:
5682 	if (ref)
5683 		got_ref_close(ref);
5684 	free(id);
5685 	return err;
5686 }
5687 
5688 static const struct got_error *
5689 add_symref(struct got_repository *repo, const char *refname, const char *target)
5690 {
5691 	const struct got_error *err = NULL;
5692 	struct got_reference *ref = NULL;
5693 	struct got_reference *target_ref = NULL;
5694 
5695 	/*
5696 	 * Don't let the user create a reference name with a leading '-'.
5697 	 * While technically a valid reference name, this case is usually
5698 	 * an unintended typo.
5699 	 */
5700 	if (refname[0] == '-')
5701 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5702 
5703 	err = got_ref_open(&target_ref, repo, target, 0);
5704 	if (err)
5705 		return err;
5706 
5707 	err = got_ref_alloc_symref(&ref, refname, target_ref);
5708 	if (err)
5709 		goto done;
5710 
5711 	err = got_ref_write(ref, repo);
5712 done:
5713 	if (target_ref)
5714 		got_ref_close(target_ref);
5715 	if (ref)
5716 		got_ref_close(ref);
5717 	return err;
5718 }
5719 
5720 static const struct got_error *
5721 cmd_ref(int argc, char *argv[])
5722 {
5723 	const struct got_error *error = NULL;
5724 	struct got_repository *repo = NULL;
5725 	struct got_worktree *worktree = NULL;
5726 	char *cwd = NULL, *repo_path = NULL;
5727 	int ch, do_list = 0, do_delete = 0;
5728 	const char *obj_arg = NULL, *symref_target= NULL;
5729 	char *refname = NULL;
5730 
5731 	while ((ch = getopt(argc, argv, "c:dr:ls:")) != -1) {
5732 		switch (ch) {
5733 		case 'c':
5734 			obj_arg = optarg;
5735 			break;
5736 		case 'd':
5737 			do_delete = 1;
5738 			break;
5739 		case 'r':
5740 			repo_path = realpath(optarg, NULL);
5741 			if (repo_path == NULL)
5742 				return got_error_from_errno2("realpath",
5743 				    optarg);
5744 			got_path_strip_trailing_slashes(repo_path);
5745 			break;
5746 		case 'l':
5747 			do_list = 1;
5748 			break;
5749 		case 's':
5750 			symref_target = optarg;
5751 			break;
5752 		default:
5753 			usage_ref();
5754 			/* NOTREACHED */
5755 		}
5756 	}
5757 
5758 	if (obj_arg && do_list)
5759 		option_conflict('c', 'l');
5760 	if (obj_arg && do_delete)
5761 		option_conflict('c', 'd');
5762 	if (obj_arg && symref_target)
5763 		option_conflict('c', 's');
5764 	if (symref_target && do_delete)
5765 		option_conflict('s', 'd');
5766 	if (symref_target && do_list)
5767 		option_conflict('s', 'l');
5768 	if (do_delete && do_list)
5769 		option_conflict('d', 'l');
5770 
5771 	argc -= optind;
5772 	argv += optind;
5773 
5774 	if (do_list) {
5775 		if (argc != 0 && argc != 1)
5776 			usage_ref();
5777 		if (argc == 1) {
5778 			refname = strdup(argv[0]);
5779 			if (refname == NULL) {
5780 				error = got_error_from_errno("strdup");
5781 				goto done;
5782 			}
5783 		}
5784 	} else {
5785 		if (argc != 1)
5786 			usage_ref();
5787 		refname = strdup(argv[0]);
5788 		if (refname == NULL) {
5789 			error = got_error_from_errno("strdup");
5790 			goto done;
5791 		}
5792 	}
5793 
5794 	if (refname)
5795 		got_path_strip_trailing_slashes(refname);
5796 
5797 #ifndef PROFILE
5798 	if (do_list) {
5799 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
5800 		    NULL) == -1)
5801 			err(1, "pledge");
5802 	} else {
5803 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
5804 		    "sendfd unveil", NULL) == -1)
5805 			err(1, "pledge");
5806 	}
5807 #endif
5808 	cwd = getcwd(NULL, 0);
5809 	if (cwd == NULL) {
5810 		error = got_error_from_errno("getcwd");
5811 		goto done;
5812 	}
5813 
5814 	if (repo_path == NULL) {
5815 		error = got_worktree_open(&worktree, cwd);
5816 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5817 			goto done;
5818 		else
5819 			error = NULL;
5820 		if (worktree) {
5821 			repo_path =
5822 			    strdup(got_worktree_get_repo_path(worktree));
5823 			if (repo_path == NULL)
5824 				error = got_error_from_errno("strdup");
5825 			if (error)
5826 				goto done;
5827 		} else {
5828 			repo_path = strdup(cwd);
5829 			if (repo_path == NULL) {
5830 				error = got_error_from_errno("strdup");
5831 				goto done;
5832 			}
5833 		}
5834 	}
5835 
5836 	error = got_repo_open(&repo, repo_path, NULL);
5837 	if (error != NULL)
5838 		goto done;
5839 
5840 	error = apply_unveil(got_repo_get_path(repo), do_list,
5841 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5842 	if (error)
5843 		goto done;
5844 
5845 	if (do_list)
5846 		error = list_refs(repo, refname);
5847 	else if (do_delete)
5848 		error = delete_ref_by_name(repo, refname);
5849 	else if (symref_target)
5850 		error = add_symref(repo, refname, symref_target);
5851 	else {
5852 		if (obj_arg == NULL)
5853 			usage_ref();
5854 		error = add_ref(repo, refname, obj_arg);
5855 	}
5856 done:
5857 	free(refname);
5858 	if (repo) {
5859 		const struct got_error *close_err = got_repo_close(repo);
5860 		if (error == NULL)
5861 			error = close_err;
5862 	}
5863 	if (worktree)
5864 		got_worktree_close(worktree);
5865 	free(cwd);
5866 	free(repo_path);
5867 	return error;
5868 }
5869 
5870 __dead static void
5871 usage_branch(void)
5872 {
5873 	fprintf(stderr,
5874 	    "usage: %s branch [-c commit] [-d] [-r repository] [-l] [-n] "
5875 	        "[name]\n", getprogname());
5876 	exit(1);
5877 }
5878 
5879 static const struct got_error *
5880 list_branch(struct got_repository *repo, struct got_worktree *worktree,
5881     struct got_reference *ref)
5882 {
5883 	const struct got_error *err = NULL;
5884 	const char *refname, *marker = "  ";
5885 	char *refstr;
5886 
5887 	refname = got_ref_get_name(ref);
5888 	if (worktree && strcmp(refname,
5889 	    got_worktree_get_head_ref_name(worktree)) == 0) {
5890 		struct got_object_id *id = NULL;
5891 
5892 		err = got_ref_resolve(&id, repo, ref);
5893 		if (err)
5894 			return err;
5895 		if (got_object_id_cmp(id,
5896 		    got_worktree_get_base_commit_id(worktree)) == 0)
5897 			marker = "* ";
5898 		else
5899 			marker = "~ ";
5900 		free(id);
5901 	}
5902 
5903 	if (strncmp(refname, "refs/heads/", 11) == 0)
5904 		refname += 11;
5905 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5906 		refname += 18;
5907 	if (strncmp(refname, "refs/remotes/", 13) == 0)
5908 		refname += 13;
5909 
5910 	refstr = got_ref_to_str(ref);
5911 	if (refstr == NULL)
5912 		return got_error_from_errno("got_ref_to_str");
5913 
5914 	printf("%s%s: %s\n", marker, refname, refstr);
5915 	free(refstr);
5916 	return NULL;
5917 }
5918 
5919 static const struct got_error *
5920 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
5921 {
5922 	const char *refname;
5923 
5924 	if (worktree == NULL)
5925 		return got_error(GOT_ERR_NOT_WORKTREE);
5926 
5927 	refname = got_worktree_get_head_ref_name(worktree);
5928 
5929 	if (strncmp(refname, "refs/heads/", 11) == 0)
5930 		refname += 11;
5931 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5932 		refname += 18;
5933 
5934 	printf("%s\n", refname);
5935 
5936 	return NULL;
5937 }
5938 
5939 static const struct got_error *
5940 list_branches(struct got_repository *repo, struct got_worktree *worktree)
5941 {
5942 	static const struct got_error *err = NULL;
5943 	struct got_reflist_head refs;
5944 	struct got_reflist_entry *re;
5945 	struct got_reference *temp_ref = NULL;
5946 	int rebase_in_progress, histedit_in_progress;
5947 
5948 	TAILQ_INIT(&refs);
5949 
5950 	if (worktree) {
5951 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
5952 		    worktree);
5953 		if (err)
5954 			return err;
5955 
5956 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
5957 		    worktree);
5958 		if (err)
5959 			return err;
5960 
5961 		if (rebase_in_progress || histedit_in_progress) {
5962 			err = got_ref_open(&temp_ref, repo,
5963 			    got_worktree_get_head_ref_name(worktree), 0);
5964 			if (err)
5965 				return err;
5966 			list_branch(repo, worktree, temp_ref);
5967 			got_ref_close(temp_ref);
5968 		}
5969 	}
5970 
5971 	err = got_ref_list(&refs, repo, "refs/heads",
5972 	    got_ref_cmp_by_name, NULL);
5973 	if (err)
5974 		return err;
5975 
5976 	TAILQ_FOREACH(re, &refs, entry)
5977 		list_branch(repo, worktree, re->ref);
5978 
5979 	got_ref_list_free(&refs);
5980 
5981 	err = got_ref_list(&refs, repo, "refs/remotes",
5982 	    got_ref_cmp_by_name, NULL);
5983 	if (err)
5984 		return err;
5985 
5986 	TAILQ_FOREACH(re, &refs, entry)
5987 		list_branch(repo, worktree, re->ref);
5988 
5989 	got_ref_list_free(&refs);
5990 
5991 	return NULL;
5992 }
5993 
5994 static const struct got_error *
5995 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
5996     const char *branch_name)
5997 {
5998 	const struct got_error *err = NULL;
5999 	struct got_reference *ref = NULL;
6000 	char *refname, *remote_refname = NULL;
6001 
6002 	if (strncmp(branch_name, "refs/", 5) == 0)
6003 		branch_name += 5;
6004 	if (strncmp(branch_name, "heads/", 6) == 0)
6005 		branch_name += 6;
6006 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6007 		branch_name += 8;
6008 
6009 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6010 		return got_error_from_errno("asprintf");
6011 
6012 	if (asprintf(&remote_refname, "refs/remotes/%s",
6013 	    branch_name) == -1) {
6014 		err = got_error_from_errno("asprintf");
6015 		goto done;
6016 	}
6017 
6018 	err = got_ref_open(&ref, repo, refname, 0);
6019 	if (err) {
6020 		const struct got_error *err2;
6021 		if (err->code != GOT_ERR_NOT_REF)
6022 			goto done;
6023 		/*
6024 		 * Keep 'err' intact such that if neither branch exists
6025 		 * we report "refs/heads" rather than "refs/remotes" in
6026 		 * our error message.
6027 		 */
6028 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6029 		if (err2)
6030 			goto done;
6031 		err = NULL;
6032 	}
6033 
6034 	if (worktree &&
6035 	    strcmp(got_worktree_get_head_ref_name(worktree),
6036 	    got_ref_get_name(ref)) == 0) {
6037 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6038 		    "will not delete this work tree's current branch");
6039 		goto done;
6040 	}
6041 
6042 	err = delete_ref(repo, ref);
6043 done:
6044 	if (ref)
6045 		got_ref_close(ref);
6046 	free(refname);
6047 	free(remote_refname);
6048 	return err;
6049 }
6050 
6051 static const struct got_error *
6052 add_branch(struct got_repository *repo, const char *branch_name,
6053     struct got_object_id *base_commit_id)
6054 {
6055 	const struct got_error *err = NULL;
6056 	struct got_reference *ref = NULL;
6057 	char *base_refname = NULL, *refname = NULL;
6058 
6059 	/*
6060 	 * Don't let the user create a branch name with a leading '-'.
6061 	 * While technically a valid reference name, this case is usually
6062 	 * an unintended typo.
6063 	 */
6064 	if (branch_name[0] == '-')
6065 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6066 
6067 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6068 		branch_name += 11;
6069 
6070 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6071 		err = got_error_from_errno("asprintf");
6072 		goto done;
6073 	}
6074 
6075 	err = got_ref_open(&ref, repo, refname, 0);
6076 	if (err == NULL) {
6077 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6078 		goto done;
6079 	} else if (err->code != GOT_ERR_NOT_REF)
6080 		goto done;
6081 
6082 	err = got_ref_alloc(&ref, refname, base_commit_id);
6083 	if (err)
6084 		goto done;
6085 
6086 	err = got_ref_write(ref, repo);
6087 done:
6088 	if (ref)
6089 		got_ref_close(ref);
6090 	free(base_refname);
6091 	free(refname);
6092 	return err;
6093 }
6094 
6095 static const struct got_error *
6096 cmd_branch(int argc, char *argv[])
6097 {
6098 	const struct got_error *error = NULL;
6099 	struct got_repository *repo = NULL;
6100 	struct got_worktree *worktree = NULL;
6101 	char *cwd = NULL, *repo_path = NULL;
6102 	int ch, do_list = 0, do_show = 0, do_update = 1;
6103 	const char *delref = NULL, *commit_id_arg = NULL;
6104 	struct got_reference *ref = NULL;
6105 	struct got_pathlist_head paths;
6106 	struct got_pathlist_entry *pe;
6107 	struct got_object_id *commit_id = NULL;
6108 	char *commit_id_str = NULL;
6109 
6110 	TAILQ_INIT(&paths);
6111 
6112 	while ((ch = getopt(argc, argv, "c:d:r:ln")) != -1) {
6113 		switch (ch) {
6114 		case 'c':
6115 			commit_id_arg = optarg;
6116 			break;
6117 		case 'd':
6118 			delref = optarg;
6119 			break;
6120 		case 'r':
6121 			repo_path = realpath(optarg, NULL);
6122 			if (repo_path == NULL)
6123 				return got_error_from_errno2("realpath",
6124 				    optarg);
6125 			got_path_strip_trailing_slashes(repo_path);
6126 			break;
6127 		case 'l':
6128 			do_list = 1;
6129 			break;
6130 		case 'n':
6131 			do_update = 0;
6132 			break;
6133 		default:
6134 			usage_branch();
6135 			/* NOTREACHED */
6136 		}
6137 	}
6138 
6139 	if (do_list && delref)
6140 		option_conflict('l', 'd');
6141 
6142 	argc -= optind;
6143 	argv += optind;
6144 
6145 	if (!do_list && !delref && argc == 0)
6146 		do_show = 1;
6147 
6148 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
6149 		errx(1, "-c option can only be used when creating a branch");
6150 
6151 	if (do_list || delref) {
6152 		if (argc > 0)
6153 			usage_branch();
6154 	} else if (!do_show && argc != 1)
6155 		usage_branch();
6156 
6157 #ifndef PROFILE
6158 	if (do_list || do_show) {
6159 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6160 		    NULL) == -1)
6161 			err(1, "pledge");
6162 	} else {
6163 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6164 		    "sendfd unveil", NULL) == -1)
6165 			err(1, "pledge");
6166 	}
6167 #endif
6168 	cwd = getcwd(NULL, 0);
6169 	if (cwd == NULL) {
6170 		error = got_error_from_errno("getcwd");
6171 		goto done;
6172 	}
6173 
6174 	if (repo_path == NULL) {
6175 		error = got_worktree_open(&worktree, cwd);
6176 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6177 			goto done;
6178 		else
6179 			error = NULL;
6180 		if (worktree) {
6181 			repo_path =
6182 			    strdup(got_worktree_get_repo_path(worktree));
6183 			if (repo_path == NULL)
6184 				error = got_error_from_errno("strdup");
6185 			if (error)
6186 				goto done;
6187 		} else {
6188 			repo_path = strdup(cwd);
6189 			if (repo_path == NULL) {
6190 				error = got_error_from_errno("strdup");
6191 				goto done;
6192 			}
6193 		}
6194 	}
6195 
6196 	error = got_repo_open(&repo, repo_path, NULL);
6197 	if (error != NULL)
6198 		goto done;
6199 
6200 	error = apply_unveil(got_repo_get_path(repo), do_list,
6201 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6202 	if (error)
6203 		goto done;
6204 
6205 	if (do_show)
6206 		error = show_current_branch(repo, worktree);
6207 	else if (do_list)
6208 		error = list_branches(repo, worktree);
6209 	else if (delref)
6210 		error = delete_branch(repo, worktree, delref);
6211 	else {
6212 		struct got_reflist_head refs;
6213 		TAILQ_INIT(&refs);
6214 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6215 		    NULL);
6216 		if (error)
6217 			goto done;
6218 		if (commit_id_arg == NULL)
6219 			commit_id_arg = worktree ?
6220 			    got_worktree_get_head_ref_name(worktree) :
6221 			    GOT_REF_HEAD;
6222 		error = got_repo_match_object_id(&commit_id, NULL,
6223 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6224 		got_ref_list_free(&refs);
6225 		if (error)
6226 			goto done;
6227 		error = add_branch(repo, argv[0], commit_id);
6228 		if (error)
6229 			goto done;
6230 		if (worktree && do_update) {
6231 			struct got_update_progress_arg upa;
6232 			char *branch_refname = NULL;
6233 
6234 			error = got_object_id_str(&commit_id_str, commit_id);
6235 			if (error)
6236 				goto done;
6237 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
6238 			    worktree);
6239 			if (error)
6240 				goto done;
6241 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
6242 			    == -1) {
6243 				error = got_error_from_errno("asprintf");
6244 				goto done;
6245 			}
6246 			error = got_ref_open(&ref, repo, branch_refname, 0);
6247 			free(branch_refname);
6248 			if (error)
6249 				goto done;
6250 			error = switch_head_ref(ref, commit_id, worktree,
6251 			    repo);
6252 			if (error)
6253 				goto done;
6254 			error = got_worktree_set_base_commit_id(worktree, repo,
6255 			    commit_id);
6256 			if (error)
6257 				goto done;
6258 			memset(&upa, 0, sizeof(upa));
6259 			error = got_worktree_checkout_files(worktree, &paths,
6260 			    repo, update_progress, &upa, check_cancelled,
6261 			    NULL);
6262 			if (error)
6263 				goto done;
6264 			if (upa.did_something) {
6265 				printf("Updated to %s: %s\n",
6266 				    got_worktree_get_head_ref_name(worktree),
6267 				    commit_id_str);
6268 			}
6269 			print_update_progress_stats(&upa);
6270 		}
6271 	}
6272 done:
6273 	if (ref)
6274 		got_ref_close(ref);
6275 	if (repo) {
6276 		const struct got_error *close_err = got_repo_close(repo);
6277 		if (error == NULL)
6278 			error = close_err;
6279 	}
6280 	if (worktree)
6281 		got_worktree_close(worktree);
6282 	free(cwd);
6283 	free(repo_path);
6284 	free(commit_id);
6285 	free(commit_id_str);
6286 	TAILQ_FOREACH(pe, &paths, entry)
6287 		free((char *)pe->path);
6288 	got_pathlist_free(&paths);
6289 	return error;
6290 }
6291 
6292 
6293 __dead static void
6294 usage_tag(void)
6295 {
6296 	fprintf(stderr,
6297 	    "usage: %s tag [-c commit] [-r repository] [-l] "
6298 	        "[-m message] name\n", getprogname());
6299 	exit(1);
6300 }
6301 
6302 #if 0
6303 static const struct got_error *
6304 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
6305 {
6306 	const struct got_error *err = NULL;
6307 	struct got_reflist_entry *re, *se, *new;
6308 	struct got_object_id *re_id, *se_id;
6309 	struct got_tag_object *re_tag, *se_tag;
6310 	time_t re_time, se_time;
6311 
6312 	STAILQ_FOREACH(re, tags, entry) {
6313 		se = STAILQ_FIRST(sorted);
6314 		if (se == NULL) {
6315 			err = got_reflist_entry_dup(&new, re);
6316 			if (err)
6317 				return err;
6318 			STAILQ_INSERT_HEAD(sorted, new, entry);
6319 			continue;
6320 		} else {
6321 			err = got_ref_resolve(&re_id, repo, re->ref);
6322 			if (err)
6323 				break;
6324 			err = got_object_open_as_tag(&re_tag, repo, re_id);
6325 			free(re_id);
6326 			if (err)
6327 				break;
6328 			re_time = got_object_tag_get_tagger_time(re_tag);
6329 			got_object_tag_close(re_tag);
6330 		}
6331 
6332 		while (se) {
6333 			err = got_ref_resolve(&se_id, repo, re->ref);
6334 			if (err)
6335 				break;
6336 			err = got_object_open_as_tag(&se_tag, repo, se_id);
6337 			free(se_id);
6338 			if (err)
6339 				break;
6340 			se_time = got_object_tag_get_tagger_time(se_tag);
6341 			got_object_tag_close(se_tag);
6342 
6343 			if (se_time > re_time) {
6344 				err = got_reflist_entry_dup(&new, re);
6345 				if (err)
6346 					return err;
6347 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
6348 				break;
6349 			}
6350 			se = STAILQ_NEXT(se, entry);
6351 			continue;
6352 		}
6353 	}
6354 done:
6355 	return err;
6356 }
6357 #endif
6358 
6359 static const struct got_error *
6360 list_tags(struct got_repository *repo, struct got_worktree *worktree)
6361 {
6362 	static const struct got_error *err = NULL;
6363 	struct got_reflist_head refs;
6364 	struct got_reflist_entry *re;
6365 
6366 	TAILQ_INIT(&refs);
6367 
6368 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
6369 	if (err)
6370 		return err;
6371 
6372 	TAILQ_FOREACH(re, &refs, entry) {
6373 		const char *refname;
6374 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
6375 		char datebuf[26];
6376 		const char *tagger;
6377 		time_t tagger_time;
6378 		struct got_object_id *id;
6379 		struct got_tag_object *tag;
6380 		struct got_commit_object *commit = NULL;
6381 
6382 		refname = got_ref_get_name(re->ref);
6383 		if (strncmp(refname, "refs/tags/", 10) != 0)
6384 			continue;
6385 		refname += 10;
6386 		refstr = got_ref_to_str(re->ref);
6387 		if (refstr == NULL) {
6388 			err = got_error_from_errno("got_ref_to_str");
6389 			break;
6390 		}
6391 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
6392 		free(refstr);
6393 
6394 		err = got_ref_resolve(&id, repo, re->ref);
6395 		if (err)
6396 			break;
6397 		err = got_object_open_as_tag(&tag, repo, id);
6398 		if (err) {
6399 			if (err->code != GOT_ERR_OBJ_TYPE) {
6400 				free(id);
6401 				break;
6402 			}
6403 			/* "lightweight" tag */
6404 			err = got_object_open_as_commit(&commit, repo, id);
6405 			if (err) {
6406 				free(id);
6407 				break;
6408 			}
6409 			tagger = got_object_commit_get_committer(commit);
6410 			tagger_time =
6411 			    got_object_commit_get_committer_time(commit);
6412 			err = got_object_id_str(&id_str, id);
6413 			free(id);
6414 			if (err)
6415 				break;
6416 		} else {
6417 			free(id);
6418 			tagger = got_object_tag_get_tagger(tag);
6419 			tagger_time = got_object_tag_get_tagger_time(tag);
6420 			err = got_object_id_str(&id_str,
6421 			    got_object_tag_get_object_id(tag));
6422 			if (err)
6423 				break;
6424 		}
6425 		printf("from: %s\n", tagger);
6426 		datestr = get_datestr(&tagger_time, datebuf);
6427 		if (datestr)
6428 			printf("date: %s UTC\n", datestr);
6429 		if (commit)
6430 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
6431 		else {
6432 			switch (got_object_tag_get_object_type(tag)) {
6433 			case GOT_OBJ_TYPE_BLOB:
6434 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
6435 				    id_str);
6436 				break;
6437 			case GOT_OBJ_TYPE_TREE:
6438 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
6439 				    id_str);
6440 				break;
6441 			case GOT_OBJ_TYPE_COMMIT:
6442 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
6443 				    id_str);
6444 				break;
6445 			case GOT_OBJ_TYPE_TAG:
6446 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
6447 				    id_str);
6448 				break;
6449 			default:
6450 				break;
6451 			}
6452 		}
6453 		free(id_str);
6454 		if (commit) {
6455 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
6456 			if (err)
6457 				break;
6458 			got_object_commit_close(commit);
6459 		} else {
6460 			tagmsg0 = strdup(got_object_tag_get_message(tag));
6461 			got_object_tag_close(tag);
6462 			if (tagmsg0 == NULL) {
6463 				err = got_error_from_errno("strdup");
6464 				break;
6465 			}
6466 		}
6467 
6468 		tagmsg = tagmsg0;
6469 		do {
6470 			line = strsep(&tagmsg, "\n");
6471 			if (line)
6472 				printf(" %s\n", line);
6473 		} while (line);
6474 		free(tagmsg0);
6475 	}
6476 
6477 	got_ref_list_free(&refs);
6478 	return NULL;
6479 }
6480 
6481 static const struct got_error *
6482 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
6483     const char *tag_name, const char *repo_path)
6484 {
6485 	const struct got_error *err = NULL;
6486 	char *template = NULL, *initial_content = NULL;
6487 	char *editor = NULL;
6488 	int initial_content_len;
6489 	int fd = -1;
6490 
6491 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
6492 		err = got_error_from_errno("asprintf");
6493 		goto done;
6494 	}
6495 
6496 	initial_content_len = asprintf(&initial_content,
6497 	    "\n# tagging commit %s as %s\n",
6498 	    commit_id_str, tag_name);
6499 	if (initial_content_len == -1) {
6500 		err = got_error_from_errno("asprintf");
6501 		goto done;
6502 	}
6503 
6504 	err = got_opentemp_named_fd(tagmsg_path, &fd, template);
6505 	if (err)
6506 		goto done;
6507 
6508 	if (write(fd, initial_content, initial_content_len) == -1) {
6509 		err = got_error_from_errno2("write", *tagmsg_path);
6510 		goto done;
6511 	}
6512 
6513 	err = get_editor(&editor);
6514 	if (err)
6515 		goto done;
6516 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
6517 	    initial_content_len, 1);
6518 done:
6519 	free(initial_content);
6520 	free(template);
6521 	free(editor);
6522 
6523 	if (fd != -1 && close(fd) == -1 && err == NULL)
6524 		err = got_error_from_errno2("close", *tagmsg_path);
6525 
6526 	/* Editor is done; we can now apply unveil(2) */
6527 	if (err == NULL)
6528 		err = apply_unveil(repo_path, 0, NULL);
6529 	if (err) {
6530 		free(*tagmsg);
6531 		*tagmsg = NULL;
6532 	}
6533 	return err;
6534 }
6535 
6536 static const struct got_error *
6537 add_tag(struct got_repository *repo, struct got_worktree *worktree,
6538     const char *tag_name, const char *commit_arg, const char *tagmsg_arg)
6539 {
6540 	const struct got_error *err = NULL;
6541 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
6542 	char *label = NULL, *commit_id_str = NULL;
6543 	struct got_reference *ref = NULL;
6544 	char *refname = NULL, *tagmsg = NULL, *tagger = NULL;
6545 	char *tagmsg_path = NULL, *tag_id_str = NULL;
6546 	int preserve_tagmsg = 0;
6547 	struct got_reflist_head refs;
6548 
6549 	TAILQ_INIT(&refs);
6550 
6551 	/*
6552 	 * Don't let the user create a tag name with a leading '-'.
6553 	 * While technically a valid reference name, this case is usually
6554 	 * an unintended typo.
6555 	 */
6556 	if (tag_name[0] == '-')
6557 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
6558 
6559 	err = get_author(&tagger, repo, worktree);
6560 	if (err)
6561 		return err;
6562 
6563 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6564 	if (err)
6565 		goto done;
6566 
6567 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
6568 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
6569 	if (err)
6570 		goto done;
6571 
6572 	err = got_object_id_str(&commit_id_str, commit_id);
6573 	if (err)
6574 		goto done;
6575 
6576 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
6577 		refname = strdup(tag_name);
6578 		if (refname == NULL) {
6579 			err = got_error_from_errno("strdup");
6580 			goto done;
6581 		}
6582 		tag_name += 10;
6583 	} else if (asprintf(&refname, "refs/tags/%s", tag_name) == -1) {
6584 		err = got_error_from_errno("asprintf");
6585 		goto done;
6586 	}
6587 
6588 	err = got_ref_open(&ref, repo, refname, 0);
6589 	if (err == NULL) {
6590 		err = got_error(GOT_ERR_TAG_EXISTS);
6591 		goto done;
6592 	} else if (err->code != GOT_ERR_NOT_REF)
6593 		goto done;
6594 
6595 	if (tagmsg_arg == NULL) {
6596 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
6597 		    tag_name, got_repo_get_path(repo));
6598 		if (err) {
6599 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
6600 			    tagmsg_path != NULL)
6601 				preserve_tagmsg = 1;
6602 			goto done;
6603 		}
6604 	}
6605 
6606 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
6607 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, repo);
6608 	if (err) {
6609 		if (tagmsg_path)
6610 			preserve_tagmsg = 1;
6611 		goto done;
6612 	}
6613 
6614 	err = got_ref_alloc(&ref, refname, tag_id);
6615 	if (err) {
6616 		if (tagmsg_path)
6617 			preserve_tagmsg = 1;
6618 		goto done;
6619 	}
6620 
6621 	err = got_ref_write(ref, repo);
6622 	if (err) {
6623 		if (tagmsg_path)
6624 			preserve_tagmsg = 1;
6625 		goto done;
6626 	}
6627 
6628 	err = got_object_id_str(&tag_id_str, tag_id);
6629 	if (err) {
6630 		if (tagmsg_path)
6631 			preserve_tagmsg = 1;
6632 		goto done;
6633 	}
6634 	printf("Created tag %s\n", tag_id_str);
6635 done:
6636 	if (preserve_tagmsg) {
6637 		fprintf(stderr, "%s: tag message preserved in %s\n",
6638 		    getprogname(), tagmsg_path);
6639 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
6640 		err = got_error_from_errno2("unlink", tagmsg_path);
6641 	free(tag_id_str);
6642 	if (ref)
6643 		got_ref_close(ref);
6644 	free(commit_id);
6645 	free(commit_id_str);
6646 	free(refname);
6647 	free(tagmsg);
6648 	free(tagmsg_path);
6649 	free(tagger);
6650 	got_ref_list_free(&refs);
6651 	return err;
6652 }
6653 
6654 static const struct got_error *
6655 cmd_tag(int argc, char *argv[])
6656 {
6657 	const struct got_error *error = NULL;
6658 	struct got_repository *repo = NULL;
6659 	struct got_worktree *worktree = NULL;
6660 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
6661 	char *gitconfig_path = NULL;
6662 	const char *tag_name, *commit_id_arg = NULL, *tagmsg = NULL;
6663 	int ch, do_list = 0;
6664 
6665 	while ((ch = getopt(argc, argv, "c:m:r:l")) != -1) {
6666 		switch (ch) {
6667 		case 'c':
6668 			commit_id_arg = optarg;
6669 			break;
6670 		case 'm':
6671 			tagmsg = optarg;
6672 			break;
6673 		case 'r':
6674 			repo_path = realpath(optarg, NULL);
6675 			if (repo_path == NULL)
6676 				return got_error_from_errno2("realpath",
6677 				    optarg);
6678 			got_path_strip_trailing_slashes(repo_path);
6679 			break;
6680 		case 'l':
6681 			do_list = 1;
6682 			break;
6683 		default:
6684 			usage_tag();
6685 			/* NOTREACHED */
6686 		}
6687 	}
6688 
6689 	argc -= optind;
6690 	argv += optind;
6691 
6692 	if (do_list) {
6693 		if (commit_id_arg != NULL)
6694 			errx(1,
6695 			    "-c option can only be used when creating a tag");
6696 		if (tagmsg)
6697 			option_conflict('l', 'm');
6698 		if (argc > 0)
6699 			usage_tag();
6700 	} else if (argc != 1)
6701 		usage_tag();
6702 
6703 	tag_name = argv[0];
6704 
6705 #ifndef PROFILE
6706 	if (do_list) {
6707 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6708 		    NULL) == -1)
6709 			err(1, "pledge");
6710 	} else {
6711 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6712 		    "sendfd unveil", NULL) == -1)
6713 			err(1, "pledge");
6714 	}
6715 #endif
6716 	cwd = getcwd(NULL, 0);
6717 	if (cwd == NULL) {
6718 		error = got_error_from_errno("getcwd");
6719 		goto done;
6720 	}
6721 
6722 	if (repo_path == NULL) {
6723 		error = got_worktree_open(&worktree, cwd);
6724 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6725 			goto done;
6726 		else
6727 			error = NULL;
6728 		if (worktree) {
6729 			repo_path =
6730 			    strdup(got_worktree_get_repo_path(worktree));
6731 			if (repo_path == NULL)
6732 				error = got_error_from_errno("strdup");
6733 			if (error)
6734 				goto done;
6735 		} else {
6736 			repo_path = strdup(cwd);
6737 			if (repo_path == NULL) {
6738 				error = got_error_from_errno("strdup");
6739 				goto done;
6740 			}
6741 		}
6742 	}
6743 
6744 	if (do_list) {
6745 		error = got_repo_open(&repo, repo_path, NULL);
6746 		if (error != NULL)
6747 			goto done;
6748 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6749 		if (error)
6750 			goto done;
6751 		error = list_tags(repo, worktree);
6752 	} else {
6753 		error = get_gitconfig_path(&gitconfig_path);
6754 		if (error)
6755 			goto done;
6756 		error = got_repo_open(&repo, repo_path, gitconfig_path);
6757 		if (error != NULL)
6758 			goto done;
6759 
6760 		if (tagmsg) {
6761 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
6762 			if (error)
6763 				goto done;
6764 		}
6765 
6766 		if (commit_id_arg == NULL) {
6767 			struct got_reference *head_ref;
6768 			struct got_object_id *commit_id;
6769 			error = got_ref_open(&head_ref, repo,
6770 			    worktree ? got_worktree_get_head_ref_name(worktree)
6771 			    : GOT_REF_HEAD, 0);
6772 			if (error)
6773 				goto done;
6774 			error = got_ref_resolve(&commit_id, repo, head_ref);
6775 			got_ref_close(head_ref);
6776 			if (error)
6777 				goto done;
6778 			error = got_object_id_str(&commit_id_str, commit_id);
6779 			free(commit_id);
6780 			if (error)
6781 				goto done;
6782 		}
6783 
6784 		error = add_tag(repo, worktree, tag_name,
6785 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg);
6786 	}
6787 done:
6788 	if (repo) {
6789 		const struct got_error *close_err = got_repo_close(repo);
6790 		if (error == NULL)
6791 			error = close_err;
6792 	}
6793 	if (worktree)
6794 		got_worktree_close(worktree);
6795 	free(cwd);
6796 	free(repo_path);
6797 	free(gitconfig_path);
6798 	free(commit_id_str);
6799 	return error;
6800 }
6801 
6802 __dead static void
6803 usage_add(void)
6804 {
6805 	fprintf(stderr, "usage: %s add [-R] [-I] path ...\n",
6806 	    getprogname());
6807 	exit(1);
6808 }
6809 
6810 static const struct got_error *
6811 add_progress(void *arg, unsigned char status, const char *path)
6812 {
6813 	while (path[0] == '/')
6814 		path++;
6815 	printf("%c  %s\n", status, path);
6816 	return NULL;
6817 }
6818 
6819 static const struct got_error *
6820 cmd_add(int argc, char *argv[])
6821 {
6822 	const struct got_error *error = NULL;
6823 	struct got_repository *repo = NULL;
6824 	struct got_worktree *worktree = NULL;
6825 	char *cwd = NULL;
6826 	struct got_pathlist_head paths;
6827 	struct got_pathlist_entry *pe;
6828 	int ch, can_recurse = 0, no_ignores = 0;
6829 
6830 	TAILQ_INIT(&paths);
6831 
6832 	while ((ch = getopt(argc, argv, "IR")) != -1) {
6833 		switch (ch) {
6834 		case 'I':
6835 			no_ignores = 1;
6836 			break;
6837 		case 'R':
6838 			can_recurse = 1;
6839 			break;
6840 		default:
6841 			usage_add();
6842 			/* NOTREACHED */
6843 		}
6844 	}
6845 
6846 	argc -= optind;
6847 	argv += optind;
6848 
6849 #ifndef PROFILE
6850 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6851 	    NULL) == -1)
6852 		err(1, "pledge");
6853 #endif
6854 	if (argc < 1)
6855 		usage_add();
6856 
6857 	cwd = getcwd(NULL, 0);
6858 	if (cwd == NULL) {
6859 		error = got_error_from_errno("getcwd");
6860 		goto done;
6861 	}
6862 
6863 	error = got_worktree_open(&worktree, cwd);
6864 	if (error) {
6865 		if (error->code == GOT_ERR_NOT_WORKTREE)
6866 			error = wrap_not_worktree_error(error, "add", cwd);
6867 		goto done;
6868 	}
6869 
6870 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6871 	    NULL);
6872 	if (error != NULL)
6873 		goto done;
6874 
6875 	error = apply_unveil(got_repo_get_path(repo), 1,
6876 	    got_worktree_get_root_path(worktree));
6877 	if (error)
6878 		goto done;
6879 
6880 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6881 	if (error)
6882 		goto done;
6883 
6884 	if (!can_recurse) {
6885 		char *ondisk_path;
6886 		struct stat sb;
6887 		TAILQ_FOREACH(pe, &paths, entry) {
6888 			if (asprintf(&ondisk_path, "%s/%s",
6889 			    got_worktree_get_root_path(worktree),
6890 			    pe->path) == -1) {
6891 				error = got_error_from_errno("asprintf");
6892 				goto done;
6893 			}
6894 			if (lstat(ondisk_path, &sb) == -1) {
6895 				if (errno == ENOENT) {
6896 					free(ondisk_path);
6897 					continue;
6898 				}
6899 				error = got_error_from_errno2("lstat",
6900 				    ondisk_path);
6901 				free(ondisk_path);
6902 				goto done;
6903 			}
6904 			free(ondisk_path);
6905 			if (S_ISDIR(sb.st_mode)) {
6906 				error = got_error_msg(GOT_ERR_BAD_PATH,
6907 				    "adding directories requires -R option");
6908 				goto done;
6909 			}
6910 		}
6911 	}
6912 
6913 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
6914 	    NULL, repo, no_ignores);
6915 done:
6916 	if (repo) {
6917 		const struct got_error *close_err = got_repo_close(repo);
6918 		if (error == NULL)
6919 			error = close_err;
6920 	}
6921 	if (worktree)
6922 		got_worktree_close(worktree);
6923 	TAILQ_FOREACH(pe, &paths, entry)
6924 		free((char *)pe->path);
6925 	got_pathlist_free(&paths);
6926 	free(cwd);
6927 	return error;
6928 }
6929 
6930 __dead static void
6931 usage_remove(void)
6932 {
6933 	fprintf(stderr, "usage: %s remove [-f] [-k] [-R] [-s status-codes] "
6934 	    "path ...\n", getprogname());
6935 	exit(1);
6936 }
6937 
6938 static const struct got_error *
6939 print_remove_status(void *arg, unsigned char status,
6940     unsigned char staged_status, const char *path)
6941 {
6942 	while (path[0] == '/')
6943 		path++;
6944 	if (status == GOT_STATUS_NONEXISTENT)
6945 		return NULL;
6946 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6947 		status = GOT_STATUS_NO_CHANGE;
6948 	printf("%c%c %s\n", status, staged_status, path);
6949 	return NULL;
6950 }
6951 
6952 static const struct got_error *
6953 cmd_remove(int argc, char *argv[])
6954 {
6955 	const struct got_error *error = NULL;
6956 	struct got_worktree *worktree = NULL;
6957 	struct got_repository *repo = NULL;
6958 	const char *status_codes = NULL;
6959 	char *cwd = NULL;
6960 	struct got_pathlist_head paths;
6961 	struct got_pathlist_entry *pe;
6962 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
6963 
6964 	TAILQ_INIT(&paths);
6965 
6966 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
6967 		switch (ch) {
6968 		case 'f':
6969 			delete_local_mods = 1;
6970 			break;
6971 		case 'k':
6972 			keep_on_disk = 1;
6973 			break;
6974 		case 'R':
6975 			can_recurse = 1;
6976 			break;
6977 		case 's':
6978 			for (i = 0; i < strlen(optarg); i++) {
6979 				switch (optarg[i]) {
6980 				case GOT_STATUS_MODIFY:
6981 					delete_local_mods = 1;
6982 					break;
6983 				case GOT_STATUS_MISSING:
6984 					break;
6985 				default:
6986 					errx(1, "invalid status code '%c'",
6987 					    optarg[i]);
6988 				}
6989 			}
6990 			status_codes = optarg;
6991 			break;
6992 		default:
6993 			usage_remove();
6994 			/* NOTREACHED */
6995 		}
6996 	}
6997 
6998 	argc -= optind;
6999 	argv += optind;
7000 
7001 #ifndef PROFILE
7002 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7003 	    NULL) == -1)
7004 		err(1, "pledge");
7005 #endif
7006 	if (argc < 1)
7007 		usage_remove();
7008 
7009 	cwd = getcwd(NULL, 0);
7010 	if (cwd == NULL) {
7011 		error = got_error_from_errno("getcwd");
7012 		goto done;
7013 	}
7014 	error = got_worktree_open(&worktree, cwd);
7015 	if (error) {
7016 		if (error->code == GOT_ERR_NOT_WORKTREE)
7017 			error = wrap_not_worktree_error(error, "remove", cwd);
7018 		goto done;
7019 	}
7020 
7021 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7022 	    NULL);
7023 	if (error)
7024 		goto done;
7025 
7026 	error = apply_unveil(got_repo_get_path(repo), 1,
7027 	    got_worktree_get_root_path(worktree));
7028 	if (error)
7029 		goto done;
7030 
7031 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7032 	if (error)
7033 		goto done;
7034 
7035 	if (!can_recurse) {
7036 		char *ondisk_path;
7037 		struct stat sb;
7038 		TAILQ_FOREACH(pe, &paths, entry) {
7039 			if (asprintf(&ondisk_path, "%s/%s",
7040 			    got_worktree_get_root_path(worktree),
7041 			    pe->path) == -1) {
7042 				error = got_error_from_errno("asprintf");
7043 				goto done;
7044 			}
7045 			if (lstat(ondisk_path, &sb) == -1) {
7046 				if (errno == ENOENT) {
7047 					free(ondisk_path);
7048 					continue;
7049 				}
7050 				error = got_error_from_errno2("lstat",
7051 				    ondisk_path);
7052 				free(ondisk_path);
7053 				goto done;
7054 			}
7055 			free(ondisk_path);
7056 			if (S_ISDIR(sb.st_mode)) {
7057 				error = got_error_msg(GOT_ERR_BAD_PATH,
7058 				    "removing directories requires -R option");
7059 				goto done;
7060 			}
7061 		}
7062 	}
7063 
7064 	error = got_worktree_schedule_delete(worktree, &paths,
7065 	    delete_local_mods, status_codes, print_remove_status, NULL,
7066 	    repo, keep_on_disk);
7067 done:
7068 	if (repo) {
7069 		const struct got_error *close_err = got_repo_close(repo);
7070 		if (error == NULL)
7071 			error = close_err;
7072 	}
7073 	if (worktree)
7074 		got_worktree_close(worktree);
7075 	TAILQ_FOREACH(pe, &paths, entry)
7076 		free((char *)pe->path);
7077 	got_pathlist_free(&paths);
7078 	free(cwd);
7079 	return error;
7080 }
7081 
7082 __dead static void
7083 usage_revert(void)
7084 {
7085 	fprintf(stderr, "usage: %s revert [-p] [-F response-script] [-R] "
7086 	    "path ...\n", getprogname());
7087 	exit(1);
7088 }
7089 
7090 static const struct got_error *
7091 revert_progress(void *arg, unsigned char status, const char *path)
7092 {
7093 	if (status == GOT_STATUS_UNVERSIONED)
7094 		return NULL;
7095 
7096 	while (path[0] == '/')
7097 		path++;
7098 	printf("%c  %s\n", status, path);
7099 	return NULL;
7100 }
7101 
7102 struct choose_patch_arg {
7103 	FILE *patch_script_file;
7104 	const char *action;
7105 };
7106 
7107 static const struct got_error *
7108 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
7109     int nchanges, const char *action)
7110 {
7111 	char *line = NULL;
7112 	size_t linesize = 0;
7113 	ssize_t linelen;
7114 
7115 	switch (status) {
7116 	case GOT_STATUS_ADD:
7117 		printf("A  %s\n%s this addition? [y/n] ", path, action);
7118 		break;
7119 	case GOT_STATUS_DELETE:
7120 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
7121 		break;
7122 	case GOT_STATUS_MODIFY:
7123 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
7124 			return got_error_from_errno("fseek");
7125 		printf(GOT_COMMIT_SEP_STR);
7126 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
7127 			printf("%s", line);
7128 		if (ferror(patch_file))
7129 			return got_error_from_errno("getline");
7130 		printf(GOT_COMMIT_SEP_STR);
7131 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
7132 		    path, n, nchanges, action);
7133 		break;
7134 	default:
7135 		return got_error_path(path, GOT_ERR_FILE_STATUS);
7136 	}
7137 
7138 	return NULL;
7139 }
7140 
7141 static const struct got_error *
7142 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
7143     FILE *patch_file, int n, int nchanges)
7144 {
7145 	const struct got_error *err = NULL;
7146 	char *line = NULL;
7147 	size_t linesize = 0;
7148 	ssize_t linelen;
7149 	int resp = ' ';
7150 	struct choose_patch_arg *a = arg;
7151 
7152 	*choice = GOT_PATCH_CHOICE_NONE;
7153 
7154 	if (a->patch_script_file) {
7155 		char *nl;
7156 		err = show_change(status, path, patch_file, n, nchanges,
7157 		    a->action);
7158 		if (err)
7159 			return err;
7160 		linelen = getline(&line, &linesize, a->patch_script_file);
7161 		if (linelen == -1) {
7162 			if (ferror(a->patch_script_file))
7163 				return got_error_from_errno("getline");
7164 			return NULL;
7165 		}
7166 		nl = strchr(line, '\n');
7167 		if (nl)
7168 			*nl = '\0';
7169 		if (strcmp(line, "y") == 0) {
7170 			*choice = GOT_PATCH_CHOICE_YES;
7171 			printf("y\n");
7172 		} else if (strcmp(line, "n") == 0) {
7173 			*choice = GOT_PATCH_CHOICE_NO;
7174 			printf("n\n");
7175 		} else if (strcmp(line, "q") == 0 &&
7176 		    status == GOT_STATUS_MODIFY) {
7177 			*choice = GOT_PATCH_CHOICE_QUIT;
7178 			printf("q\n");
7179 		} else
7180 			printf("invalid response '%s'\n", line);
7181 		free(line);
7182 		return NULL;
7183 	}
7184 
7185 	while (resp != 'y' && resp != 'n' && resp != 'q') {
7186 		err = show_change(status, path, patch_file, n, nchanges,
7187 		    a->action);
7188 		if (err)
7189 			return err;
7190 		resp = getchar();
7191 		if (resp == '\n')
7192 			resp = getchar();
7193 		if (status == GOT_STATUS_MODIFY) {
7194 			if (resp != 'y' && resp != 'n' && resp != 'q') {
7195 				printf("invalid response '%c'\n", resp);
7196 				resp = ' ';
7197 			}
7198 		} else if (resp != 'y' && resp != 'n') {
7199 				printf("invalid response '%c'\n", resp);
7200 				resp = ' ';
7201 		}
7202 	}
7203 
7204 	if (resp == 'y')
7205 		*choice = GOT_PATCH_CHOICE_YES;
7206 	else if (resp == 'n')
7207 		*choice = GOT_PATCH_CHOICE_NO;
7208 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
7209 		*choice = GOT_PATCH_CHOICE_QUIT;
7210 
7211 	return NULL;
7212 }
7213 
7214 
7215 static const struct got_error *
7216 cmd_revert(int argc, char *argv[])
7217 {
7218 	const struct got_error *error = NULL;
7219 	struct got_worktree *worktree = NULL;
7220 	struct got_repository *repo = NULL;
7221 	char *cwd = NULL, *path = NULL;
7222 	struct got_pathlist_head paths;
7223 	struct got_pathlist_entry *pe;
7224 	int ch, can_recurse = 0, pflag = 0;
7225 	FILE *patch_script_file = NULL;
7226 	const char *patch_script_path = NULL;
7227 	struct choose_patch_arg cpa;
7228 
7229 	TAILQ_INIT(&paths);
7230 
7231 	while ((ch = getopt(argc, argv, "pF:R")) != -1) {
7232 		switch (ch) {
7233 		case 'p':
7234 			pflag = 1;
7235 			break;
7236 		case 'F':
7237 			patch_script_path = optarg;
7238 			break;
7239 		case 'R':
7240 			can_recurse = 1;
7241 			break;
7242 		default:
7243 			usage_revert();
7244 			/* NOTREACHED */
7245 		}
7246 	}
7247 
7248 	argc -= optind;
7249 	argv += optind;
7250 
7251 #ifndef PROFILE
7252 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7253 	    "unveil", NULL) == -1)
7254 		err(1, "pledge");
7255 #endif
7256 	if (argc < 1)
7257 		usage_revert();
7258 	if (patch_script_path && !pflag)
7259 		errx(1, "-F option can only be used together with -p option");
7260 
7261 	cwd = getcwd(NULL, 0);
7262 	if (cwd == NULL) {
7263 		error = got_error_from_errno("getcwd");
7264 		goto done;
7265 	}
7266 	error = got_worktree_open(&worktree, cwd);
7267 	if (error) {
7268 		if (error->code == GOT_ERR_NOT_WORKTREE)
7269 			error = wrap_not_worktree_error(error, "revert", cwd);
7270 		goto done;
7271 	}
7272 
7273 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7274 	    NULL);
7275 	if (error != NULL)
7276 		goto done;
7277 
7278 	if (patch_script_path) {
7279 		patch_script_file = fopen(patch_script_path, "r");
7280 		if (patch_script_file == NULL) {
7281 			error = got_error_from_errno2("fopen",
7282 			    patch_script_path);
7283 			goto done;
7284 		}
7285 	}
7286 	error = apply_unveil(got_repo_get_path(repo), 1,
7287 	    got_worktree_get_root_path(worktree));
7288 	if (error)
7289 		goto done;
7290 
7291 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7292 	if (error)
7293 		goto done;
7294 
7295 	if (!can_recurse) {
7296 		char *ondisk_path;
7297 		struct stat sb;
7298 		TAILQ_FOREACH(pe, &paths, entry) {
7299 			if (asprintf(&ondisk_path, "%s/%s",
7300 			    got_worktree_get_root_path(worktree),
7301 			    pe->path) == -1) {
7302 				error = got_error_from_errno("asprintf");
7303 				goto done;
7304 			}
7305 			if (lstat(ondisk_path, &sb) == -1) {
7306 				if (errno == ENOENT) {
7307 					free(ondisk_path);
7308 					continue;
7309 				}
7310 				error = got_error_from_errno2("lstat",
7311 				    ondisk_path);
7312 				free(ondisk_path);
7313 				goto done;
7314 			}
7315 			free(ondisk_path);
7316 			if (S_ISDIR(sb.st_mode)) {
7317 				error = got_error_msg(GOT_ERR_BAD_PATH,
7318 				    "reverting directories requires -R option");
7319 				goto done;
7320 			}
7321 		}
7322 	}
7323 
7324 	cpa.patch_script_file = patch_script_file;
7325 	cpa.action = "revert";
7326 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
7327 	    pflag ? choose_patch : NULL, &cpa, repo);
7328 done:
7329 	if (patch_script_file && fclose(patch_script_file) == EOF &&
7330 	    error == NULL)
7331 		error = got_error_from_errno2("fclose", patch_script_path);
7332 	if (repo) {
7333 		const struct got_error *close_err = got_repo_close(repo);
7334 		if (error == NULL)
7335 			error = close_err;
7336 	}
7337 	if (worktree)
7338 		got_worktree_close(worktree);
7339 	free(path);
7340 	free(cwd);
7341 	return error;
7342 }
7343 
7344 __dead static void
7345 usage_commit(void)
7346 {
7347 	fprintf(stderr, "usage: %s commit [-F path] [-m msg] [-N] [-S] "
7348 	    "[path ...]\n", getprogname());
7349 	exit(1);
7350 }
7351 
7352 struct collect_commit_logmsg_arg {
7353 	const char *cmdline_log;
7354 	const char *prepared_log;
7355 	int non_interactive;
7356 	const char *editor;
7357 	const char *worktree_path;
7358 	const char *branch_name;
7359 	const char *repo_path;
7360 	char *logmsg_path;
7361 
7362 };
7363 
7364 static const struct got_error *
7365 read_prepared_logmsg(char **logmsg, const char *path)
7366 {
7367 	const struct got_error *err = NULL;
7368 	FILE *f = NULL;
7369 	struct stat sb;
7370 	size_t r;
7371 
7372 	*logmsg = NULL;
7373 	memset(&sb, 0, sizeof(sb));
7374 
7375 	f = fopen(path, "r");
7376 	if (f == NULL)
7377 		return got_error_from_errno2("fopen", path);
7378 
7379 	if (fstat(fileno(f), &sb) == -1) {
7380 		err = got_error_from_errno2("fstat", path);
7381 		goto done;
7382 	}
7383 	if (sb.st_size == 0) {
7384 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
7385 		goto done;
7386 	}
7387 
7388 	*logmsg = malloc(sb.st_size + 1);
7389 	if (*logmsg == NULL) {
7390 		err = got_error_from_errno("malloc");
7391 		goto done;
7392 	}
7393 
7394 	r = fread(*logmsg, 1, sb.st_size, f);
7395 	if (r != sb.st_size) {
7396 		if (ferror(f))
7397 			err = got_error_from_errno2("fread", path);
7398 		else
7399 			err = got_error(GOT_ERR_IO);
7400 		goto done;
7401 	}
7402 	(*logmsg)[sb.st_size] = '\0';
7403 done:
7404 	if (fclose(f) == EOF && err == NULL)
7405 		err = got_error_from_errno2("fclose", path);
7406 	if (err) {
7407 		free(*logmsg);
7408 		*logmsg = NULL;
7409 	}
7410 	return err;
7411 	
7412 }
7413 
7414 static const struct got_error *
7415 collect_commit_logmsg(struct got_pathlist_head *commitable_paths, char **logmsg,
7416     void *arg)
7417 {
7418 	char *initial_content = NULL;
7419 	struct got_pathlist_entry *pe;
7420 	const struct got_error *err = NULL;
7421 	char *template = NULL;
7422 	struct collect_commit_logmsg_arg *a = arg;
7423 	int initial_content_len;
7424 	int fd = -1;
7425 	size_t len;
7426 
7427 	/* if a message was specified on the command line, just use it */
7428 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
7429 		len = strlen(a->cmdline_log) + 1;
7430 		*logmsg = malloc(len + 1);
7431 		if (*logmsg == NULL)
7432 			return got_error_from_errno("malloc");
7433 		strlcpy(*logmsg, a->cmdline_log, len);
7434 		return NULL;
7435 	} else if (a->prepared_log != NULL && a->non_interactive)
7436 		return read_prepared_logmsg(logmsg, a->prepared_log);
7437 
7438 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
7439 		return got_error_from_errno("asprintf");
7440 
7441 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template);
7442 	if (err)
7443 		goto done;
7444 
7445 	if (a->prepared_log) {
7446 		char *msg;
7447 		err = read_prepared_logmsg(&msg, a->prepared_log);
7448 		if (err)
7449 			goto done;
7450 		if (write(fd, msg, strlen(msg)) == -1) {
7451 			err = got_error_from_errno2("write", a->logmsg_path);
7452 			free(msg);
7453 			goto done;
7454 		}
7455 		free(msg);
7456 	}
7457 
7458 	initial_content_len = asprintf(&initial_content,
7459 	    "\n# changes to be committed on branch %s:\n",
7460 	    a->branch_name);
7461 	if (initial_content_len == -1) {
7462 		err = got_error_from_errno("asprintf");
7463 		goto done;
7464 	}
7465 
7466 	if (write(fd, initial_content, initial_content_len) == -1) {
7467 		err = got_error_from_errno2("write", a->logmsg_path);
7468 		goto done;
7469 	}
7470 
7471 	TAILQ_FOREACH(pe, commitable_paths, entry) {
7472 		struct got_commitable *ct = pe->data;
7473 		dprintf(fd, "#  %c  %s\n",
7474 		    got_commitable_get_status(ct),
7475 		    got_commitable_get_path(ct));
7476 	}
7477 
7478 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
7479 	    initial_content_len, a->prepared_log ? 0 : 1);
7480 done:
7481 	free(initial_content);
7482 	free(template);
7483 
7484 	if (fd != -1 && close(fd) == -1 && err == NULL)
7485 		err = got_error_from_errno2("close", a->logmsg_path);
7486 
7487 	/* Editor is done; we can now apply unveil(2) */
7488 	if (err == NULL)
7489 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
7490 	if (err) {
7491 		free(*logmsg);
7492 		*logmsg = NULL;
7493 	}
7494 	return err;
7495 }
7496 
7497 static const struct got_error *
7498 cmd_commit(int argc, char *argv[])
7499 {
7500 	const struct got_error *error = NULL;
7501 	struct got_worktree *worktree = NULL;
7502 	struct got_repository *repo = NULL;
7503 	char *cwd = NULL, *id_str = NULL;
7504 	struct got_object_id *id = NULL;
7505 	const char *logmsg = NULL;
7506 	char *prepared_logmsg = NULL;
7507 	struct collect_commit_logmsg_arg cl_arg;
7508 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
7509 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
7510 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
7511 	struct got_pathlist_head paths;
7512 
7513 	TAILQ_INIT(&paths);
7514 	cl_arg.logmsg_path = NULL;
7515 
7516 	while ((ch = getopt(argc, argv, "F:m:NS")) != -1) {
7517 		switch (ch) {
7518 		case 'F':
7519 			if (logmsg != NULL)
7520 				option_conflict('F', 'm');
7521 			prepared_logmsg = realpath(optarg, NULL);
7522 			if (prepared_logmsg == NULL)
7523 				return got_error_from_errno2("realpath",
7524 				    optarg);
7525 			break;
7526 		case 'm':
7527 			if (prepared_logmsg)
7528 				option_conflict('m', 'F');
7529 			logmsg = optarg;
7530 			break;
7531 		case 'N':
7532 			non_interactive = 1;
7533 			break;
7534 		case 'S':
7535 			allow_bad_symlinks = 1;
7536 			break;
7537 		default:
7538 			usage_commit();
7539 			/* NOTREACHED */
7540 		}
7541 	}
7542 
7543 	argc -= optind;
7544 	argv += optind;
7545 
7546 #ifndef PROFILE
7547 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7548 	    "unveil", NULL) == -1)
7549 		err(1, "pledge");
7550 #endif
7551 	cwd = getcwd(NULL, 0);
7552 	if (cwd == NULL) {
7553 		error = got_error_from_errno("getcwd");
7554 		goto done;
7555 	}
7556 	error = got_worktree_open(&worktree, cwd);
7557 	if (error) {
7558 		if (error->code == GOT_ERR_NOT_WORKTREE)
7559 			error = wrap_not_worktree_error(error, "commit", cwd);
7560 		goto done;
7561 	}
7562 
7563 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
7564 	if (error)
7565 		goto done;
7566 	if (rebase_in_progress) {
7567 		error = got_error(GOT_ERR_REBASING);
7568 		goto done;
7569 	}
7570 
7571 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
7572 	    worktree);
7573 	if (error)
7574 		goto done;
7575 
7576 	error = get_gitconfig_path(&gitconfig_path);
7577 	if (error)
7578 		goto done;
7579 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7580 	    gitconfig_path);
7581 	if (error != NULL)
7582 		goto done;
7583 
7584 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
7585 	if (error)
7586 		goto done;
7587 	if (merge_in_progress) {
7588 		error = got_error(GOT_ERR_MERGE_BUSY);
7589 		goto done;
7590 	}
7591 
7592 	error = get_author(&author, repo, worktree);
7593 	if (error)
7594 		return error;
7595 
7596 	/*
7597 	 * unveil(2) traverses exec(2); if an editor is used we have
7598 	 * to apply unveil after the log message has been written.
7599 	 */
7600 	if (logmsg == NULL || strlen(logmsg) == 0)
7601 		error = get_editor(&editor);
7602 	else
7603 		error = apply_unveil(got_repo_get_path(repo), 0,
7604 		    got_worktree_get_root_path(worktree));
7605 	if (error)
7606 		goto done;
7607 
7608 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7609 	if (error)
7610 		goto done;
7611 
7612 	cl_arg.editor = editor;
7613 	cl_arg.cmdline_log = logmsg;
7614 	cl_arg.prepared_log = prepared_logmsg;
7615 	cl_arg.non_interactive = non_interactive;
7616 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
7617 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
7618 	if (!histedit_in_progress) {
7619 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
7620 			error = got_error(GOT_ERR_COMMIT_BRANCH);
7621 			goto done;
7622 		}
7623 		cl_arg.branch_name += 11;
7624 	}
7625 	cl_arg.repo_path = got_repo_get_path(repo);
7626 	error = got_worktree_commit(&id, worktree, &paths, author, NULL,
7627 	    allow_bad_symlinks, collect_commit_logmsg, &cl_arg,
7628 	    print_status, NULL, repo);
7629 	if (error) {
7630 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7631 		    cl_arg.logmsg_path != NULL)
7632 			preserve_logmsg = 1;
7633 		goto done;
7634 	}
7635 
7636 	error = got_object_id_str(&id_str, id);
7637 	if (error)
7638 		goto done;
7639 	printf("Created commit %s\n", id_str);
7640 done:
7641 	if (preserve_logmsg) {
7642 		fprintf(stderr, "%s: log message preserved in %s\n",
7643 		    getprogname(), cl_arg.logmsg_path);
7644 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
7645 	    error == NULL)
7646 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
7647 	free(cl_arg.logmsg_path);
7648 	if (repo) {
7649 		const struct got_error *close_err = got_repo_close(repo);
7650 		if (error == NULL)
7651 			error = close_err;
7652 	}
7653 	if (worktree)
7654 		got_worktree_close(worktree);
7655 	free(cwd);
7656 	free(id_str);
7657 	free(gitconfig_path);
7658 	free(editor);
7659 	free(author);
7660 	free(prepared_logmsg);
7661 	return error;
7662 }
7663 
7664 __dead static void
7665 usage_send(void)
7666 {
7667 	fprintf(stderr, "usage: %s send [-a] [-b branch] [-d branch] [-f] "
7668 	    "[-r repository-path] [-t tag] [-T] [-q] [-v] "
7669 	    "[remote-repository]\n", getprogname());
7670 	exit(1);
7671 }
7672 
7673 struct got_send_progress_arg {
7674 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
7675 	int verbosity;
7676 	int last_ncommits;
7677 	int last_nobj_total;
7678 	int last_p_deltify;
7679 	int last_p_written;
7680 	int last_p_sent;
7681 	int printed_something;
7682 	int sent_something;
7683 	struct got_pathlist_head *delete_branches;
7684 };
7685 
7686 static const struct got_error *
7687 send_progress(void *arg, off_t packfile_size, int ncommits, int nobj_total,
7688     int nobj_deltify, int nobj_written, off_t bytes_sent, const char *refname,
7689     int success)
7690 {
7691 	struct got_send_progress_arg *a = arg;
7692 	char scaled_packsize[FMT_SCALED_STRSIZE];
7693 	char scaled_sent[FMT_SCALED_STRSIZE];
7694 	int p_deltify = 0, p_written = 0, p_sent = 0;
7695 	int print_searching = 0, print_total = 0;
7696 	int print_deltify = 0, print_written = 0, print_sent = 0;
7697 
7698 	if (a->verbosity < 0)
7699 		return NULL;
7700 
7701 	if (refname) {
7702 		const char *status = success ? "accepted" : "rejected";
7703 
7704 		if (success) {
7705 			struct got_pathlist_entry *pe;
7706 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
7707 				const char *branchname = pe->path;
7708 				if (got_path_cmp(branchname, refname,
7709 				    strlen(branchname), strlen(refname)) == 0) {
7710 					status = "deleted";
7711 					a->sent_something = 1;
7712 					break;
7713 				}
7714 			}
7715 		}
7716 
7717 		if (a->printed_something)
7718 			putchar('\n');
7719 		printf("Server has %s %s", status, refname);
7720 		a->printed_something = 1;
7721 		return NULL;
7722 	}
7723 
7724 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
7725 		return got_error_from_errno("fmt_scaled");
7726 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
7727 		return got_error_from_errno("fmt_scaled");
7728 
7729 	if (a->last_ncommits != ncommits) {
7730 		print_searching = 1;
7731 		a->last_ncommits = ncommits;
7732 	}
7733 
7734 	if (a->last_nobj_total != nobj_total) {
7735 		print_searching = 1;
7736 		print_total = 1;
7737 		a->last_nobj_total = nobj_total;
7738 	}
7739 
7740 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
7741 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
7742 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
7743 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
7744 			return got_error(GOT_ERR_NO_SPACE);
7745 	}
7746 
7747 	if (nobj_deltify > 0 || nobj_written > 0) {
7748 		if (nobj_deltify > 0) {
7749 			p_deltify = (nobj_deltify * 100) / nobj_total;
7750 			if (p_deltify != a->last_p_deltify) {
7751 				a->last_p_deltify = p_deltify;
7752 				print_searching = 1;
7753 				print_total = 1;
7754 				print_deltify = 1;
7755 			}
7756 		}
7757 		if (nobj_written > 0) {
7758 			p_written = (nobj_written * 100) / nobj_total;
7759 			if (p_written != a->last_p_written) {
7760 				a->last_p_written = p_written;
7761 				print_searching = 1;
7762 				print_total = 1;
7763 				print_deltify = 1;
7764 				print_written = 1;
7765 			}
7766 		}
7767 	}
7768 
7769 	if (bytes_sent > 0) {
7770 		p_sent = (bytes_sent * 100) / packfile_size;
7771 		if (p_sent != a->last_p_sent) {
7772 			a->last_p_sent = p_sent;
7773 			print_searching = 1;
7774 			print_total = 1;
7775 			print_deltify = 1;
7776 			print_written = 1;
7777 			print_sent = 1;
7778 		}
7779 		a->sent_something = 1;
7780 	}
7781 
7782 	if (print_searching || print_total || print_deltify || print_written ||
7783 	    print_sent)
7784 		printf("\r");
7785 	if (print_searching)
7786 		printf("packing %d reference%s", ncommits,
7787 		    ncommits == 1 ? "" : "s");
7788 	if (print_total)
7789 		printf("; %d object%s", nobj_total,
7790 		    nobj_total == 1 ? "" : "s");
7791 	if (print_deltify)
7792 		printf("; deltify: %d%%", p_deltify);
7793 	if (print_sent)
7794 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE,
7795 		    scaled_packsize, p_sent);
7796 	else if (print_written)
7797 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE,
7798 		    scaled_packsize, p_written);
7799 	if (print_searching || print_total || print_deltify ||
7800 	    print_written || print_sent) {
7801 		a->printed_something = 1;
7802 		fflush(stdout);
7803 	}
7804 	return NULL;
7805 }
7806 
7807 static const struct got_error *
7808 cmd_send(int argc, char *argv[])
7809 {
7810 	const struct got_error *error = NULL;
7811 	char *cwd = NULL, *repo_path = NULL;
7812 	const char *remote_name;
7813 	char *proto = NULL, *host = NULL, *port = NULL;
7814 	char *repo_name = NULL, *server_path = NULL;
7815 	const struct got_remote_repo *remotes, *remote = NULL;
7816 	int nremotes, nbranches = 0, ntags = 0, ndelete_branches = 0;
7817 	struct got_repository *repo = NULL;
7818 	struct got_worktree *worktree = NULL;
7819 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
7820 	struct got_pathlist_head branches;
7821 	struct got_pathlist_head tags;
7822 	struct got_reflist_head all_branches;
7823 	struct got_reflist_head all_tags;
7824 	struct got_pathlist_head delete_args;
7825 	struct got_pathlist_head delete_branches;
7826 	struct got_reflist_entry *re;
7827 	struct got_pathlist_entry *pe;
7828 	int i, ch, sendfd = -1, sendstatus;
7829 	pid_t sendpid = -1;
7830 	struct got_send_progress_arg spa;
7831 	int verbosity = 0, overwrite_refs = 0;
7832 	int send_all_branches = 0, send_all_tags = 0;
7833 	struct got_reference *ref = NULL;
7834 
7835 	TAILQ_INIT(&branches);
7836 	TAILQ_INIT(&tags);
7837 	TAILQ_INIT(&all_branches);
7838 	TAILQ_INIT(&all_tags);
7839 	TAILQ_INIT(&delete_args);
7840 	TAILQ_INIT(&delete_branches);
7841 
7842 	while ((ch = getopt(argc, argv, "ab:d:fr:t:Tvq")) != -1) {
7843 		switch (ch) {
7844 		case 'a':
7845 			send_all_branches = 1;
7846 			break;
7847 		case 'b':
7848 			error = got_pathlist_append(&branches, optarg, NULL);
7849 			if (error)
7850 				return error;
7851 			nbranches++;
7852 			break;
7853 		case 'd':
7854 			error = got_pathlist_append(&delete_args, optarg, NULL);
7855 			if (error)
7856 				return error;
7857 			break;
7858 		case 'f':
7859 			overwrite_refs = 1;
7860 			break;
7861 		case 'r':
7862 			repo_path = realpath(optarg, NULL);
7863 			if (repo_path == NULL)
7864 				return got_error_from_errno2("realpath",
7865 				    optarg);
7866 			got_path_strip_trailing_slashes(repo_path);
7867 			break;
7868 		case 't':
7869 			error = got_pathlist_append(&tags, optarg, NULL);
7870 			if (error)
7871 				return error;
7872 			ntags++;
7873 			break;
7874 		case 'T':
7875 			send_all_tags = 1;
7876 			break;
7877 		case 'v':
7878 			if (verbosity < 0)
7879 				verbosity = 0;
7880 			else if (verbosity < 3)
7881 				verbosity++;
7882 			break;
7883 		case 'q':
7884 			verbosity = -1;
7885 			break;
7886 		default:
7887 			usage_send();
7888 			/* NOTREACHED */
7889 		}
7890 	}
7891 	argc -= optind;
7892 	argv += optind;
7893 
7894 	if (send_all_branches && !TAILQ_EMPTY(&branches))
7895 		option_conflict('a', 'b');
7896 	if (send_all_tags && !TAILQ_EMPTY(&tags))
7897 		option_conflict('T', 't');
7898 
7899 
7900 	if (argc == 0)
7901 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
7902 	else if (argc == 1)
7903 		remote_name = argv[0];
7904 	else
7905 		usage_send();
7906 
7907 	cwd = getcwd(NULL, 0);
7908 	if (cwd == NULL) {
7909 		error = got_error_from_errno("getcwd");
7910 		goto done;
7911 	}
7912 
7913 	if (repo_path == NULL) {
7914 		error = got_worktree_open(&worktree, cwd);
7915 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7916 			goto done;
7917 		else
7918 			error = NULL;
7919 		if (worktree) {
7920 			repo_path =
7921 			    strdup(got_worktree_get_repo_path(worktree));
7922 			if (repo_path == NULL)
7923 				error = got_error_from_errno("strdup");
7924 			if (error)
7925 				goto done;
7926 		} else {
7927 			repo_path = strdup(cwd);
7928 			if (repo_path == NULL) {
7929 				error = got_error_from_errno("strdup");
7930 				goto done;
7931 			}
7932 		}
7933 	}
7934 
7935 	error = got_repo_open(&repo, repo_path, NULL);
7936 	if (error)
7937 		goto done;
7938 
7939 	if (worktree) {
7940 		worktree_conf = got_worktree_get_gotconfig(worktree);
7941 		if (worktree_conf) {
7942 			got_gotconfig_get_remotes(&nremotes, &remotes,
7943 			    worktree_conf);
7944 			for (i = 0; i < nremotes; i++) {
7945 				if (strcmp(remotes[i].name, remote_name) == 0) {
7946 					remote = &remotes[i];
7947 					break;
7948 				}
7949 			}
7950 		}
7951 	}
7952 	if (remote == NULL) {
7953 		repo_conf = got_repo_get_gotconfig(repo);
7954 		if (repo_conf) {
7955 			got_gotconfig_get_remotes(&nremotes, &remotes,
7956 			    repo_conf);
7957 			for (i = 0; i < nremotes; i++) {
7958 				if (strcmp(remotes[i].name, remote_name) == 0) {
7959 					remote = &remotes[i];
7960 					break;
7961 				}
7962 			}
7963 		}
7964 	}
7965 	if (remote == NULL) {
7966 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
7967 		for (i = 0; i < nremotes; i++) {
7968 			if (strcmp(remotes[i].name, remote_name) == 0) {
7969 				remote = &remotes[i];
7970 				break;
7971 			}
7972 		}
7973 	}
7974 	if (remote == NULL) {
7975 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
7976 		goto done;
7977 	}
7978 
7979 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
7980 	    &repo_name, remote->send_url);
7981 	if (error)
7982 		goto done;
7983 
7984 	if (strcmp(proto, "git") == 0) {
7985 #ifndef PROFILE
7986 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7987 		    "sendfd dns inet unveil", NULL) == -1)
7988 			err(1, "pledge");
7989 #endif
7990 	} else if (strcmp(proto, "git+ssh") == 0 ||
7991 	    strcmp(proto, "ssh") == 0) {
7992 #ifndef PROFILE
7993 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7994 		    "sendfd unveil", NULL) == -1)
7995 			err(1, "pledge");
7996 #endif
7997 	} else if (strcmp(proto, "http") == 0 ||
7998 	    strcmp(proto, "git+http") == 0) {
7999 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
8000 		goto done;
8001 	} else {
8002 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
8003 		goto done;
8004 	}
8005 
8006 	error = got_dial_apply_unveil(proto);
8007 	if (error)
8008 		goto done;
8009 
8010 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
8011 	if (error)
8012 		goto done;
8013 
8014 	if (send_all_branches) {
8015 		error = got_ref_list(&all_branches, repo, "refs/heads",
8016 		    got_ref_cmp_by_name, NULL);
8017 		if (error)
8018 			goto done;
8019 		TAILQ_FOREACH(re, &all_branches, entry) {
8020 			const char *branchname = got_ref_get_name(re->ref);
8021 			error = got_pathlist_append(&branches,
8022 			    branchname, NULL);
8023 			if (error)
8024 				goto done;
8025 			nbranches++;
8026 		}
8027 	} else if (nbranches == 0) {
8028 		for (i = 0; i < remote->nsend_branches; i++) {
8029 			got_pathlist_append(&branches,
8030 			    remote->send_branches[i], NULL);
8031 		}
8032 	}
8033 
8034 	if (send_all_tags) {
8035 		error = got_ref_list(&all_tags, repo, "refs/tags",
8036 		    got_ref_cmp_by_name, NULL);
8037 		if (error)
8038 			goto done;
8039 		TAILQ_FOREACH(re, &all_tags, entry) {
8040 			const char *tagname = got_ref_get_name(re->ref);
8041 			error = got_pathlist_append(&tags,
8042 			    tagname, NULL);
8043 			if (error)
8044 				goto done;
8045 			ntags++;
8046 		}
8047 	}
8048 
8049 	/*
8050 	 * To prevent accidents only branches in refs/heads/ can be deleted
8051 	 * with 'got send -d'.
8052 	 * Deleting anything else requires local repository access or Git.
8053 	 */
8054 	TAILQ_FOREACH(pe, &delete_args, entry) {
8055 		const char *branchname = pe->path;
8056 		char *s;
8057 		struct got_pathlist_entry *new;
8058 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
8059 			s = strdup(branchname);
8060 			if (s == NULL) {
8061 				error = got_error_from_errno("strdup");
8062 				goto done;
8063 			}
8064 		} else {
8065 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
8066 				error = got_error_from_errno("asprintf");
8067 				goto done;
8068 			}
8069 		}
8070 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
8071 		if (error || new == NULL /* duplicate */)
8072 			free(s);
8073 		if (error)
8074 			goto done;
8075 		ndelete_branches++;
8076 	}
8077 
8078 	if (nbranches == 0 && ndelete_branches == 0) {
8079 		struct got_reference *head_ref;
8080 		if (worktree)
8081 			error = got_ref_open(&head_ref, repo,
8082 			    got_worktree_get_head_ref_name(worktree), 0);
8083 		else
8084 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
8085 		if (error)
8086 			goto done;
8087 		if (got_ref_is_symbolic(head_ref)) {
8088 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
8089 			got_ref_close(head_ref);
8090 			if (error)
8091 				goto done;
8092 		} else
8093 			ref = head_ref;
8094 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
8095 		    NULL);
8096 		if (error)
8097 			goto done;
8098 		nbranches++;
8099 	}
8100 
8101 	if (verbosity >= 0)
8102 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
8103 		    port ? ":" : "", port ? port : "");
8104 
8105 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
8106 	    server_path, verbosity);
8107 	if (error)
8108 		goto done;
8109 
8110 	memset(&spa, 0, sizeof(spa));
8111 	spa.last_scaled_packsize[0] = '\0';
8112 	spa.last_p_deltify = -1;
8113 	spa.last_p_written = -1;
8114 	spa.verbosity = verbosity;
8115 	spa.delete_branches = &delete_branches;
8116 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
8117 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
8118 	    check_cancelled, NULL);
8119 	if (spa.printed_something)
8120 		putchar('\n');
8121 	if (error)
8122 		goto done;
8123 	if (!spa.sent_something && verbosity >= 0)
8124 		printf("Already up-to-date\n");
8125 done:
8126 	if (sendpid > 0) {
8127 		if (kill(sendpid, SIGTERM) == -1)
8128 			error = got_error_from_errno("kill");
8129 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
8130 			error = got_error_from_errno("waitpid");
8131 	}
8132 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
8133 		error = got_error_from_errno("close");
8134 	if (repo) {
8135 		const struct got_error *close_err = got_repo_close(repo);
8136 		if (error == NULL)
8137 			error = close_err;
8138 	}
8139 	if (worktree)
8140 		got_worktree_close(worktree);
8141 	if (ref)
8142 		got_ref_close(ref);
8143 	got_pathlist_free(&branches);
8144 	got_pathlist_free(&tags);
8145 	got_ref_list_free(&all_branches);
8146 	got_ref_list_free(&all_tags);
8147 	got_pathlist_free(&delete_args);
8148 	TAILQ_FOREACH(pe, &delete_branches, entry)
8149 		free((char *)pe->path);
8150 	got_pathlist_free(&delete_branches);
8151 	free(cwd);
8152 	free(repo_path);
8153 	free(proto);
8154 	free(host);
8155 	free(port);
8156 	free(server_path);
8157 	free(repo_name);
8158 	return error;
8159 }
8160 
8161 __dead static void
8162 usage_cherrypick(void)
8163 {
8164 	fprintf(stderr, "usage: %s cherrypick commit-id\n", getprogname());
8165 	exit(1);
8166 }
8167 
8168 static const struct got_error *
8169 cmd_cherrypick(int argc, char *argv[])
8170 {
8171 	const struct got_error *error = NULL;
8172 	struct got_worktree *worktree = NULL;
8173 	struct got_repository *repo = NULL;
8174 	char *cwd = NULL, *commit_id_str = NULL;
8175 	struct got_object_id *commit_id = NULL;
8176 	struct got_commit_object *commit = NULL;
8177 	struct got_object_qid *pid;
8178 	int ch;
8179 	struct got_update_progress_arg upa;
8180 
8181 	while ((ch = getopt(argc, argv, "")) != -1) {
8182 		switch (ch) {
8183 		default:
8184 			usage_cherrypick();
8185 			/* NOTREACHED */
8186 		}
8187 	}
8188 
8189 	argc -= optind;
8190 	argv += optind;
8191 
8192 #ifndef PROFILE
8193 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8194 	    "unveil", NULL) == -1)
8195 		err(1, "pledge");
8196 #endif
8197 	if (argc != 1)
8198 		usage_cherrypick();
8199 
8200 	cwd = getcwd(NULL, 0);
8201 	if (cwd == NULL) {
8202 		error = got_error_from_errno("getcwd");
8203 		goto done;
8204 	}
8205 	error = got_worktree_open(&worktree, cwd);
8206 	if (error) {
8207 		if (error->code == GOT_ERR_NOT_WORKTREE)
8208 			error = wrap_not_worktree_error(error, "cherrypick",
8209 			    cwd);
8210 		goto done;
8211 	}
8212 
8213 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8214 	    NULL);
8215 	if (error != NULL)
8216 		goto done;
8217 
8218 	error = apply_unveil(got_repo_get_path(repo), 0,
8219 	    got_worktree_get_root_path(worktree));
8220 	if (error)
8221 		goto done;
8222 
8223 	error = got_repo_match_object_id_prefix(&commit_id, argv[0],
8224 	    GOT_OBJ_TYPE_COMMIT, repo);
8225 	if (error != NULL) {
8226 		struct got_reference *ref;
8227 		if (error->code != GOT_ERR_BAD_OBJ_ID_STR)
8228 			goto done;
8229 		error = got_ref_open(&ref, repo, argv[0], 0);
8230 		if (error != NULL)
8231 			goto done;
8232 		error = got_ref_resolve(&commit_id, repo, ref);
8233 		got_ref_close(ref);
8234 		if (error != NULL)
8235 			goto done;
8236 	}
8237 	error = got_object_id_str(&commit_id_str, commit_id);
8238 	if (error)
8239 		goto done;
8240 
8241 	error = got_object_open_as_commit(&commit, repo, commit_id);
8242 	if (error)
8243 		goto done;
8244 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8245 	memset(&upa, 0, sizeof(upa));
8246 	error = got_worktree_merge_files(worktree, pid ? pid->id : NULL,
8247 	    commit_id, repo, update_progress, &upa, check_cancelled,
8248 	    NULL);
8249 	if (error != NULL)
8250 		goto done;
8251 
8252 	if (upa.did_something)
8253 		printf("Merged commit %s\n", commit_id_str);
8254 	print_merge_progress_stats(&upa);
8255 done:
8256 	if (commit)
8257 		got_object_commit_close(commit);
8258 	free(commit_id_str);
8259 	if (worktree)
8260 		got_worktree_close(worktree);
8261 	if (repo) {
8262 		const struct got_error *close_err = got_repo_close(repo);
8263 		if (error == NULL)
8264 			error = close_err;
8265 	}
8266 	return error;
8267 }
8268 
8269 __dead static void
8270 usage_backout(void)
8271 {
8272 	fprintf(stderr, "usage: %s backout commit-id\n", getprogname());
8273 	exit(1);
8274 }
8275 
8276 static const struct got_error *
8277 cmd_backout(int argc, char *argv[])
8278 {
8279 	const struct got_error *error = NULL;
8280 	struct got_worktree *worktree = NULL;
8281 	struct got_repository *repo = NULL;
8282 	char *cwd = NULL, *commit_id_str = NULL;
8283 	struct got_object_id *commit_id = NULL;
8284 	struct got_commit_object *commit = NULL;
8285 	struct got_object_qid *pid;
8286 	int ch;
8287 	struct got_update_progress_arg upa;
8288 
8289 	while ((ch = getopt(argc, argv, "")) != -1) {
8290 		switch (ch) {
8291 		default:
8292 			usage_backout();
8293 			/* NOTREACHED */
8294 		}
8295 	}
8296 
8297 	argc -= optind;
8298 	argv += optind;
8299 
8300 #ifndef PROFILE
8301 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8302 	    "unveil", NULL) == -1)
8303 		err(1, "pledge");
8304 #endif
8305 	if (argc != 1)
8306 		usage_backout();
8307 
8308 	cwd = getcwd(NULL, 0);
8309 	if (cwd == NULL) {
8310 		error = got_error_from_errno("getcwd");
8311 		goto done;
8312 	}
8313 	error = got_worktree_open(&worktree, cwd);
8314 	if (error) {
8315 		if (error->code == GOT_ERR_NOT_WORKTREE)
8316 			error = wrap_not_worktree_error(error, "backout", cwd);
8317 		goto done;
8318 	}
8319 
8320 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8321 	    NULL);
8322 	if (error != NULL)
8323 		goto done;
8324 
8325 	error = apply_unveil(got_repo_get_path(repo), 0,
8326 	    got_worktree_get_root_path(worktree));
8327 	if (error)
8328 		goto done;
8329 
8330 	error = got_repo_match_object_id_prefix(&commit_id, argv[0],
8331 	    GOT_OBJ_TYPE_COMMIT, repo);
8332 	if (error != NULL) {
8333 		struct got_reference *ref;
8334 		if (error->code != GOT_ERR_BAD_OBJ_ID_STR)
8335 			goto done;
8336 		error = got_ref_open(&ref, repo, argv[0], 0);
8337 		if (error != NULL)
8338 			goto done;
8339 		error = got_ref_resolve(&commit_id, repo, ref);
8340 		got_ref_close(ref);
8341 		if (error != NULL)
8342 			goto done;
8343 	}
8344 	error = got_object_id_str(&commit_id_str, commit_id);
8345 	if (error)
8346 		goto done;
8347 
8348 	error = got_object_open_as_commit(&commit, repo, commit_id);
8349 	if (error)
8350 		goto done;
8351 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8352 	if (pid == NULL) {
8353 		error = got_error(GOT_ERR_ROOT_COMMIT);
8354 		goto done;
8355 	}
8356 
8357 	memset(&upa, 0, sizeof(upa));
8358 	error = got_worktree_merge_files(worktree, commit_id, pid->id,
8359 	    repo, update_progress, &upa, check_cancelled, NULL);
8360 	if (error != NULL)
8361 		goto done;
8362 
8363 	if (upa.did_something)
8364 		printf("Backed out commit %s\n", commit_id_str);
8365 	print_merge_progress_stats(&upa);
8366 done:
8367 	if (commit)
8368 		got_object_commit_close(commit);
8369 	free(commit_id_str);
8370 	if (worktree)
8371 		got_worktree_close(worktree);
8372 	if (repo) {
8373 		const struct got_error *close_err = got_repo_close(repo);
8374 		if (error == NULL)
8375 			error = close_err;
8376 	}
8377 	return error;
8378 }
8379 
8380 __dead static void
8381 usage_rebase(void)
8382 {
8383 	fprintf(stderr, "usage: %s rebase [-a] [-c] [-l] [-X] [branch]\n",
8384 	    getprogname());
8385 	exit(1);
8386 }
8387 
8388 void
8389 trim_logmsg(char *logmsg, int limit)
8390 {
8391 	char *nl;
8392 	size_t len;
8393 
8394 	len = strlen(logmsg);
8395 	if (len > limit)
8396 		len = limit;
8397 	logmsg[len] = '\0';
8398 	nl = strchr(logmsg, '\n');
8399 	if (nl)
8400 		*nl = '\0';
8401 }
8402 
8403 static const struct got_error *
8404 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
8405 {
8406 	const struct got_error *err;
8407 	char *logmsg0 = NULL;
8408 	const char *s;
8409 
8410 	err = got_object_commit_get_logmsg(&logmsg0, commit);
8411 	if (err)
8412 		return err;
8413 
8414 	s = logmsg0;
8415 	while (isspace((unsigned char)s[0]))
8416 		s++;
8417 
8418 	*logmsg = strdup(s);
8419 	if (*logmsg == NULL) {
8420 		err = got_error_from_errno("strdup");
8421 		goto done;
8422 	}
8423 
8424 	trim_logmsg(*logmsg, limit);
8425 done:
8426 	free(logmsg0);
8427 	return err;
8428 }
8429 
8430 static const struct got_error *
8431 show_rebase_merge_conflict(struct got_object_id *id, struct got_repository *repo)
8432 {
8433 	const struct got_error *err;
8434 	struct got_commit_object *commit = NULL;
8435 	char *id_str = NULL, *logmsg = NULL;
8436 
8437 	err = got_object_open_as_commit(&commit, repo, id);
8438 	if (err)
8439 		return err;
8440 
8441 	err = got_object_id_str(&id_str, id);
8442 	if (err)
8443 		goto done;
8444 
8445 	id_str[12] = '\0';
8446 
8447 	err = get_short_logmsg(&logmsg, 42, commit);
8448 	if (err)
8449 		goto done;
8450 
8451 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
8452 done:
8453 	free(id_str);
8454 	got_object_commit_close(commit);
8455 	free(logmsg);
8456 	return err;
8457 }
8458 
8459 static const struct got_error *
8460 show_rebase_progress(struct got_commit_object *commit,
8461     struct got_object_id *old_id, struct got_object_id *new_id)
8462 {
8463 	const struct got_error *err;
8464 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
8465 
8466 	err = got_object_id_str(&old_id_str, old_id);
8467 	if (err)
8468 		goto done;
8469 
8470 	if (new_id) {
8471 		err = got_object_id_str(&new_id_str, new_id);
8472 		if (err)
8473 			goto done;
8474 	}
8475 
8476 	old_id_str[12] = '\0';
8477 	if (new_id_str)
8478 		new_id_str[12] = '\0';
8479 
8480 	err = get_short_logmsg(&logmsg, 42, commit);
8481 	if (err)
8482 		goto done;
8483 
8484 	printf("%s -> %s: %s\n", old_id_str,
8485 	    new_id_str ? new_id_str : "no-op change", logmsg);
8486 done:
8487 	free(old_id_str);
8488 	free(new_id_str);
8489 	free(logmsg);
8490 	return err;
8491 }
8492 
8493 static const struct got_error *
8494 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
8495     struct got_reference *branch, struct got_reference *new_base_branch,
8496     struct got_reference *tmp_branch, struct got_repository *repo,
8497     int create_backup)
8498 {
8499 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
8500 	return got_worktree_rebase_complete(worktree, fileindex,
8501 	    new_base_branch, tmp_branch, branch, repo, create_backup);
8502 }
8503 
8504 static const struct got_error *
8505 rebase_commit(struct got_pathlist_head *merged_paths,
8506     struct got_worktree *worktree, struct got_fileindex *fileindex,
8507     struct got_reference *tmp_branch,
8508     struct got_object_id *commit_id, struct got_repository *repo)
8509 {
8510 	const struct got_error *error;
8511 	struct got_commit_object *commit;
8512 	struct got_object_id *new_commit_id;
8513 
8514 	error = got_object_open_as_commit(&commit, repo, commit_id);
8515 	if (error)
8516 		return error;
8517 
8518 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
8519 	    worktree, fileindex, tmp_branch, commit, commit_id, repo);
8520 	if (error) {
8521 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
8522 			goto done;
8523 		error = show_rebase_progress(commit, commit_id, NULL);
8524 	} else {
8525 		error = show_rebase_progress(commit, commit_id, new_commit_id);
8526 		free(new_commit_id);
8527 	}
8528 done:
8529 	got_object_commit_close(commit);
8530 	return error;
8531 }
8532 
8533 struct check_path_prefix_arg {
8534 	const char *path_prefix;
8535 	size_t len;
8536 	int errcode;
8537 };
8538 
8539 static const struct got_error *
8540 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
8541     struct got_blob_object *blob2, struct got_object_id *id1,
8542     struct got_object_id *id2, const char *path1, const char *path2,
8543     mode_t mode1, mode_t mode2, struct got_repository *repo)
8544 {
8545 	struct check_path_prefix_arg *a = arg;
8546 
8547 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
8548 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
8549 		return got_error(a->errcode);
8550 
8551 	return NULL;
8552 }
8553 
8554 static const struct got_error *
8555 check_path_prefix(struct got_object_id *parent_id,
8556     struct got_object_id *commit_id, const char *path_prefix,
8557     int errcode, struct got_repository *repo)
8558 {
8559 	const struct got_error *err;
8560 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
8561 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
8562 	struct check_path_prefix_arg cpp_arg;
8563 
8564 	if (got_path_is_root_dir(path_prefix))
8565 		return NULL;
8566 
8567 	err = got_object_open_as_commit(&commit, repo, commit_id);
8568 	if (err)
8569 		goto done;
8570 
8571 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
8572 	if (err)
8573 		goto done;
8574 
8575 	err = got_object_open_as_tree(&tree1, repo,
8576 	    got_object_commit_get_tree_id(parent_commit));
8577 	if (err)
8578 		goto done;
8579 
8580 	err = got_object_open_as_tree(&tree2, repo,
8581 	    got_object_commit_get_tree_id(commit));
8582 	if (err)
8583 		goto done;
8584 
8585 	cpp_arg.path_prefix = path_prefix;
8586 	while (cpp_arg.path_prefix[0] == '/')
8587 		cpp_arg.path_prefix++;
8588 	cpp_arg.len = strlen(cpp_arg.path_prefix);
8589 	cpp_arg.errcode = errcode;
8590 	err = got_diff_tree(tree1, tree2, "", "", repo,
8591 	    check_path_prefix_in_diff, &cpp_arg, 0);
8592 done:
8593 	if (tree1)
8594 		got_object_tree_close(tree1);
8595 	if (tree2)
8596 		got_object_tree_close(tree2);
8597 	if (commit)
8598 		got_object_commit_close(commit);
8599 	if (parent_commit)
8600 		got_object_commit_close(parent_commit);
8601 	return err;
8602 }
8603 
8604 static const struct got_error *
8605 collect_commits(struct got_object_id_queue *commits,
8606     struct got_object_id *initial_commit_id,
8607     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
8608     const char *path_prefix, int path_prefix_errcode,
8609     struct got_repository *repo)
8610 {
8611 	const struct got_error *err = NULL;
8612 	struct got_commit_graph *graph = NULL;
8613 	struct got_object_id *parent_id = NULL;
8614 	struct got_object_qid *qid;
8615         struct got_object_id *commit_id = initial_commit_id;
8616 
8617 	err = got_commit_graph_open(&graph, "/", 1);
8618 	if (err)
8619 		return err;
8620 
8621 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
8622 	    check_cancelled, NULL);
8623 	if (err)
8624 		goto done;
8625 	while (got_object_id_cmp(commit_id, iter_stop_id) != 0) {
8626 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
8627 		    check_cancelled, NULL);
8628 		if (err) {
8629 			if (err->code == GOT_ERR_ITER_COMPLETED) {
8630 				err = got_error_msg(GOT_ERR_ANCESTRY,
8631 				    "ran out of commits to rebase before "
8632 				    "youngest common ancestor commit has "
8633 				    "been reached?!?");
8634 			}
8635 			goto done;
8636 		} else {
8637 			err = check_path_prefix(parent_id, commit_id,
8638 			    path_prefix, path_prefix_errcode, repo);
8639 			if (err)
8640 				goto done;
8641 
8642 			err = got_object_qid_alloc(&qid, commit_id);
8643 			if (err)
8644 				goto done;
8645 			STAILQ_INSERT_HEAD(commits, qid, entry);
8646 			commit_id = parent_id;
8647 		}
8648 	}
8649 done:
8650 	got_commit_graph_close(graph);
8651 	return err;
8652 }
8653 
8654 static const struct got_error *
8655 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
8656 {
8657 	const struct got_error *err = NULL;
8658 	time_t committer_time;
8659 	struct tm tm;
8660 	char datebuf[11]; /* YYYY-MM-DD + NUL */
8661 	char *author0 = NULL, *author, *smallerthan;
8662 	char *logmsg0 = NULL, *logmsg, *newline;
8663 
8664 	committer_time = got_object_commit_get_committer_time(commit);
8665 	if (gmtime_r(&committer_time, &tm) == NULL)
8666 		return got_error_from_errno("gmtime_r");
8667 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
8668 		return got_error(GOT_ERR_NO_SPACE);
8669 
8670 	author0 = strdup(got_object_commit_get_author(commit));
8671 	if (author0 == NULL)
8672 		return got_error_from_errno("strdup");
8673 	author = author0;
8674 	smallerthan = strchr(author, '<');
8675 	if (smallerthan && smallerthan[1] != '\0')
8676 		author = smallerthan + 1;
8677 	author[strcspn(author, "@>")] = '\0';
8678 
8679 	err = got_object_commit_get_logmsg(&logmsg0, commit);
8680 	if (err)
8681 		goto done;
8682 	logmsg = logmsg0;
8683 	while (*logmsg == '\n')
8684 		logmsg++;
8685 	newline = strchr(logmsg, '\n');
8686 	if (newline)
8687 		*newline = '\0';
8688 
8689 	if (asprintf(brief_str, "%s %s  %s",
8690 	    datebuf, author, logmsg) == -1)
8691 		err = got_error_from_errno("asprintf");
8692 done:
8693 	free(author0);
8694 	free(logmsg0);
8695 	return err;
8696 }
8697 
8698 static const struct got_error *
8699 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
8700     struct got_repository *repo)
8701 {
8702 	const struct got_error *err;
8703 	char *id_str;
8704 
8705 	err = got_object_id_str(&id_str, id);
8706 	if (err)
8707 		return err;
8708 
8709 	err = got_ref_delete(ref, repo);
8710 	if (err)
8711 		goto done;
8712 
8713 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
8714 done:
8715 	free(id_str);
8716 	return err;
8717 }
8718 
8719 static const struct got_error *
8720 print_backup_ref(const char *branch_name, const char *new_id_str,
8721     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
8722     struct got_reflist_object_id_map *refs_idmap,
8723     struct got_repository *repo)
8724 {
8725 	const struct got_error *err = NULL;
8726 	struct got_reflist_head *refs;
8727 	char *refs_str = NULL;
8728 	struct got_object_id *new_commit_id = NULL;
8729 	struct got_commit_object *new_commit = NULL;
8730 	char *new_commit_brief_str = NULL;
8731 	struct got_object_id *yca_id = NULL;
8732 	struct got_commit_object *yca_commit = NULL;
8733 	char *yca_id_str = NULL, *yca_brief_str = NULL;
8734 	char *custom_refs_str;
8735 
8736 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
8737 		return got_error_from_errno("asprintf");
8738 
8739 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL,
8740 	    0, 0, refs_idmap, custom_refs_str);
8741 	if (err)
8742 		goto done;
8743 
8744 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
8745 	if (err)
8746 		goto done;
8747 
8748 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
8749 	if (refs) {
8750 		err = build_refs_str(&refs_str, refs, new_commit_id, repo);
8751 		if (err)
8752 			goto done;
8753 	}
8754 
8755 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
8756 	if (err)
8757 		goto done;
8758 
8759 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
8760 	if (err)
8761 		goto done;
8762 
8763 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
8764 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
8765 	if (err)
8766 		goto done;
8767 
8768 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
8769 	    refs_str ? " (" : "", refs_str ? refs_str : "",
8770 	    refs_str ? ")" : "", new_commit_brief_str);
8771 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
8772 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
8773 		free(refs_str);
8774 		refs_str = NULL;
8775 
8776 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
8777 		if (err)
8778 			goto done;
8779 
8780 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
8781 		if (err)
8782 			goto done;
8783 
8784 		err = got_object_id_str(&yca_id_str, yca_id);
8785 		if (err)
8786 			goto done;
8787 
8788 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
8789 		if (refs) {
8790 			err = build_refs_str(&refs_str, refs, yca_id, repo);
8791 			if (err)
8792 				goto done;
8793 		}
8794 		printf("history forked at %s%s%s%s\n %s\n",
8795 		    yca_id_str,
8796 		    refs_str ? " (" : "", refs_str ? refs_str : "",
8797 		    refs_str ? ")" : "", yca_brief_str);
8798 	}
8799 done:
8800 	free(custom_refs_str);
8801 	free(new_commit_id);
8802 	free(refs_str);
8803 	free(yca_id);
8804 	free(yca_id_str);
8805 	free(yca_brief_str);
8806 	if (new_commit)
8807 		got_object_commit_close(new_commit);
8808 	if (yca_commit)
8809 		got_object_commit_close(yca_commit);
8810 
8811 	return NULL;
8812 }
8813 
8814 static const struct got_error *
8815 process_backup_refs(const char *backup_ref_prefix, const char *wanted_branch_name,
8816     int delete, struct got_repository *repo)
8817 {
8818 	const struct got_error *err;
8819 	struct got_reflist_head refs, backup_refs;
8820 	struct got_reflist_entry *re;
8821 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
8822 	struct got_object_id *old_commit_id = NULL;
8823 	char *branch_name = NULL;
8824 	struct got_commit_object *old_commit = NULL;
8825 	struct got_reflist_object_id_map *refs_idmap = NULL;
8826 	int wanted_branch_found = 0;
8827 
8828 	TAILQ_INIT(&refs);
8829 	TAILQ_INIT(&backup_refs);
8830 
8831 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8832 	if (err)
8833 		return err;
8834 
8835 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
8836 	if (err)
8837 		goto done;
8838 
8839 	if (wanted_branch_name) {
8840 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
8841 			wanted_branch_name += 11;
8842 	}
8843 
8844 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
8845 	    got_ref_cmp_by_commit_timestamp_descending, repo);
8846 	if (err)
8847 		goto done;
8848 
8849 	TAILQ_FOREACH(re, &backup_refs, entry) {
8850 		const char *refname = got_ref_get_name(re->ref);
8851 		char *slash;
8852 
8853 		err = check_cancelled(NULL);
8854 		if (err)
8855 			break;
8856 
8857 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
8858 		if (err)
8859 			break;
8860 
8861 		err = got_object_open_as_commit(&old_commit, repo,
8862 		    old_commit_id);
8863 		if (err)
8864 			break;
8865 
8866 		if (strncmp(backup_ref_prefix, refname,
8867 		    backup_ref_prefix_len) == 0)
8868 			refname += backup_ref_prefix_len;
8869 
8870 		while (refname[0] == '/')
8871 			refname++;
8872 
8873 		branch_name = strdup(refname);
8874 		if (branch_name == NULL) {
8875 			err = got_error_from_errno("strdup");
8876 			break;
8877 		}
8878 		slash = strrchr(branch_name, '/');
8879 		if (slash) {
8880 			*slash = '\0';
8881 			refname += strlen(branch_name) + 1;
8882 		}
8883 
8884 		if (wanted_branch_name == NULL ||
8885 		    strcmp(wanted_branch_name, branch_name) == 0) {
8886 			wanted_branch_found = 1;
8887 			if (delete) {
8888 				err = delete_backup_ref(re->ref,
8889 				    old_commit_id, repo);
8890 			} else {
8891 				err = print_backup_ref(branch_name, refname,
8892 				    old_commit_id, old_commit, refs_idmap,
8893 				    repo);
8894 			}
8895 			if (err)
8896 				break;
8897 		}
8898 
8899 		free(old_commit_id);
8900 		old_commit_id = NULL;
8901 		free(branch_name);
8902 		branch_name = NULL;
8903 		got_object_commit_close(old_commit);
8904 		old_commit = NULL;
8905 	}
8906 
8907 	if (wanted_branch_name && !wanted_branch_found) {
8908 		err = got_error_fmt(GOT_ERR_NOT_REF,
8909 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
8910 	}
8911 done:
8912 	if (refs_idmap)
8913 		got_reflist_object_id_map_free(refs_idmap);
8914 	got_ref_list_free(&refs);
8915 	got_ref_list_free(&backup_refs);
8916 	free(old_commit_id);
8917 	free(branch_name);
8918 	if (old_commit)
8919 		got_object_commit_close(old_commit);
8920 	return err;
8921 }
8922 
8923 static const struct got_error *
8924 abort_progress(void *arg, unsigned char status, const char *path)
8925 {
8926 	/*
8927 	 * Unversioned files should not clutter progress output when
8928 	 * an operation is aborted.
8929 	 */
8930 	if (status == GOT_STATUS_UNVERSIONED)
8931 		return NULL;
8932 
8933 	return update_progress(arg, status, path);
8934 }
8935 
8936 static const struct got_error *
8937 cmd_rebase(int argc, char *argv[])
8938 {
8939 	const struct got_error *error = NULL;
8940 	struct got_worktree *worktree = NULL;
8941 	struct got_repository *repo = NULL;
8942 	struct got_fileindex *fileindex = NULL;
8943 	char *cwd = NULL;
8944 	struct got_reference *branch = NULL;
8945 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
8946 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
8947 	struct got_object_id *resume_commit_id = NULL;
8948 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
8949 	struct got_commit_object *commit = NULL;
8950 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
8951 	int histedit_in_progress = 0, merge_in_progress = 0;
8952 	int create_backup = 1, list_backups = 0, delete_backups = 0;
8953 	struct got_object_id_queue commits;
8954 	struct got_pathlist_head merged_paths;
8955 	const struct got_object_id_queue *parent_ids;
8956 	struct got_object_qid *qid, *pid;
8957 	struct got_update_progress_arg upa;
8958 
8959 	STAILQ_INIT(&commits);
8960 	TAILQ_INIT(&merged_paths);
8961 	memset(&upa, 0, sizeof(upa));
8962 
8963 	while ((ch = getopt(argc, argv, "aclX")) != -1) {
8964 		switch (ch) {
8965 		case 'a':
8966 			abort_rebase = 1;
8967 			break;
8968 		case 'c':
8969 			continue_rebase = 1;
8970 			break;
8971 		case 'l':
8972 			list_backups = 1;
8973 			break;
8974 		case 'X':
8975 			delete_backups = 1;
8976 			break;
8977 		default:
8978 			usage_rebase();
8979 			/* NOTREACHED */
8980 		}
8981 	}
8982 
8983 	argc -= optind;
8984 	argv += optind;
8985 
8986 #ifndef PROFILE
8987 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8988 	    "unveil", NULL) == -1)
8989 		err(1, "pledge");
8990 #endif
8991 	if (list_backups) {
8992 		if (abort_rebase)
8993 			option_conflict('l', 'a');
8994 		if (continue_rebase)
8995 			option_conflict('l', 'c');
8996 		if (delete_backups)
8997 			option_conflict('l', 'X');
8998 		if (argc != 0 && argc != 1)
8999 			usage_rebase();
9000 	} else if (delete_backups) {
9001 		if (abort_rebase)
9002 			option_conflict('X', 'a');
9003 		if (continue_rebase)
9004 			option_conflict('X', 'c');
9005 		if (list_backups)
9006 			option_conflict('l', 'X');
9007 		if (argc != 0 && argc != 1)
9008 			usage_rebase();
9009 	} else {
9010 		if (abort_rebase && continue_rebase)
9011 			usage_rebase();
9012 		else if (abort_rebase || continue_rebase) {
9013 			if (argc != 0)
9014 				usage_rebase();
9015 		} else if (argc != 1)
9016 			usage_rebase();
9017 	}
9018 
9019 	cwd = getcwd(NULL, 0);
9020 	if (cwd == NULL) {
9021 		error = got_error_from_errno("getcwd");
9022 		goto done;
9023 	}
9024 	error = got_worktree_open(&worktree, cwd);
9025 	if (error) {
9026 		if (list_backups || delete_backups) {
9027 			if (error->code != GOT_ERR_NOT_WORKTREE)
9028 				goto done;
9029 		} else {
9030 			if (error->code == GOT_ERR_NOT_WORKTREE)
9031 				error = wrap_not_worktree_error(error,
9032 				    "rebase", cwd);
9033 			goto done;
9034 		}
9035 	}
9036 
9037 	error = got_repo_open(&repo,
9038 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL);
9039 	if (error != NULL)
9040 		goto done;
9041 
9042 	error = apply_unveil(got_repo_get_path(repo), 0,
9043 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
9044 	if (error)
9045 		goto done;
9046 
9047 	if (list_backups || delete_backups) {
9048 		error = process_backup_refs(
9049 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
9050 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
9051 		goto done; /* nothing else to do */
9052 	}
9053 
9054 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
9055 	    worktree);
9056 	if (error)
9057 		goto done;
9058 	if (histedit_in_progress) {
9059 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
9060 		goto done;
9061 	}
9062 
9063 	error = got_worktree_merge_in_progress(&merge_in_progress,
9064 	    worktree, repo);
9065 	if (error)
9066 		goto done;
9067 	if (merge_in_progress) {
9068 		error = got_error(GOT_ERR_MERGE_BUSY);
9069 		goto done;
9070 	}
9071 
9072 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
9073 	if (error)
9074 		goto done;
9075 
9076 	if (abort_rebase) {
9077 		if (!rebase_in_progress) {
9078 			error = got_error(GOT_ERR_NOT_REBASING);
9079 			goto done;
9080 		}
9081 		error = got_worktree_rebase_continue(&resume_commit_id,
9082 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
9083 		    worktree, repo);
9084 		if (error)
9085 			goto done;
9086 		printf("Switching work tree to %s\n",
9087 		    got_ref_get_symref_target(new_base_branch));
9088 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
9089 		    new_base_branch, abort_progress, &upa);
9090 		if (error)
9091 			goto done;
9092 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
9093 		print_merge_progress_stats(&upa);
9094 		goto done; /* nothing else to do */
9095 	}
9096 
9097 	if (continue_rebase) {
9098 		if (!rebase_in_progress) {
9099 			error = got_error(GOT_ERR_NOT_REBASING);
9100 			goto done;
9101 		}
9102 		error = got_worktree_rebase_continue(&resume_commit_id,
9103 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
9104 		    worktree, repo);
9105 		if (error)
9106 			goto done;
9107 
9108 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
9109 		    resume_commit_id, repo);
9110 		if (error)
9111 			goto done;
9112 
9113 		yca_id = got_object_id_dup(resume_commit_id);
9114 		if (yca_id == NULL) {
9115 			error = got_error_from_errno("got_object_id_dup");
9116 			goto done;
9117 		}
9118 	} else {
9119 		error = got_ref_open(&branch, repo, argv[0], 0);
9120 		if (error != NULL)
9121 			goto done;
9122 	}
9123 
9124 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
9125 	if (error)
9126 		goto done;
9127 
9128 	if (!continue_rebase) {
9129 		struct got_object_id *base_commit_id;
9130 
9131 		base_commit_id = got_worktree_get_base_commit_id(worktree);
9132 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
9133 		    base_commit_id, branch_head_commit_id, 1, repo,
9134 		    check_cancelled, NULL);
9135 		if (error)
9136 			goto done;
9137 		if (yca_id == NULL) {
9138 			error = got_error_msg(GOT_ERR_ANCESTRY,
9139 			    "specified branch shares no common ancestry "
9140 			    "with work tree's branch");
9141 			goto done;
9142 		}
9143 
9144 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
9145 		if (error) {
9146 			if (error->code != GOT_ERR_ANCESTRY)
9147 				goto done;
9148 			error = NULL;
9149 		} else {
9150 			struct got_pathlist_head paths;
9151 			printf("%s is already based on %s\n",
9152 			    got_ref_get_name(branch),
9153 			    got_worktree_get_head_ref_name(worktree));
9154 			error = switch_head_ref(branch, branch_head_commit_id,
9155 			    worktree, repo);
9156 			if (error)
9157 				goto done;
9158 			error = got_worktree_set_base_commit_id(worktree, repo,
9159 			    branch_head_commit_id);
9160 			if (error)
9161 				goto done;
9162 			TAILQ_INIT(&paths);
9163 			error = got_pathlist_append(&paths, "", NULL);
9164 			if (error)
9165 				goto done;
9166 			error = got_worktree_checkout_files(worktree,
9167 			    &paths, repo, update_progress, &upa,
9168 			    check_cancelled, NULL);
9169 			got_pathlist_free(&paths);
9170 			if (error)
9171 				goto done;
9172 			if (upa.did_something) {
9173 				char *id_str;
9174 				error = got_object_id_str(&id_str,
9175 				    branch_head_commit_id);
9176 				if (error)
9177 					goto done;
9178 				printf("Updated to %s: %s\n",
9179 				    got_worktree_get_head_ref_name(worktree),
9180 				    id_str);
9181 				free(id_str);
9182 			} else
9183 				printf("Already up-to-date\n");
9184 			print_update_progress_stats(&upa);
9185 			goto done;
9186 		}
9187 		error = got_worktree_rebase_prepare(&new_base_branch,
9188 		    &tmp_branch, &fileindex, worktree, branch, repo);
9189 		if (error)
9190 			goto done;
9191 	}
9192 
9193 	commit_id = branch_head_commit_id;
9194 	error = got_object_open_as_commit(&commit, repo, commit_id);
9195 	if (error)
9196 		goto done;
9197 
9198 	parent_ids = got_object_commit_get_parent_ids(commit);
9199 	pid = STAILQ_FIRST(parent_ids);
9200 	if (pid == NULL) {
9201 		if (!continue_rebase) {
9202 			error = got_worktree_rebase_abort(worktree, fileindex,
9203 			    repo, new_base_branch, abort_progress, &upa);
9204 			if (error)
9205 				goto done;
9206 			printf("Rebase of %s aborted\n",
9207 			    got_ref_get_name(branch));
9208 			print_merge_progress_stats(&upa);
9209 
9210 		}
9211 		error = got_error(GOT_ERR_EMPTY_REBASE);
9212 		goto done;
9213 	}
9214 	error = collect_commits(&commits, commit_id, pid->id,
9215 	    yca_id, got_worktree_get_path_prefix(worktree),
9216 	    GOT_ERR_REBASE_PATH, repo);
9217 	got_object_commit_close(commit);
9218 	commit = NULL;
9219 	if (error)
9220 		goto done;
9221 
9222 	if (STAILQ_EMPTY(&commits)) {
9223 		if (continue_rebase) {
9224 			error = rebase_complete(worktree, fileindex,
9225 			    branch, new_base_branch, tmp_branch, repo,
9226 			    create_backup);
9227 			goto done;
9228 		} else {
9229 			/* Fast-forward the reference of the branch. */
9230 			struct got_object_id *new_head_commit_id;
9231 			char *id_str;
9232 			error = got_ref_resolve(&new_head_commit_id, repo,
9233 			    new_base_branch);
9234 			if (error)
9235 				goto done;
9236 			error = got_object_id_str(&id_str, new_head_commit_id);
9237 			printf("Forwarding %s to commit %s\n",
9238 			    got_ref_get_name(branch), id_str);
9239 			free(id_str);
9240 			error = got_ref_change_ref(branch,
9241 			    new_head_commit_id);
9242 			if (error)
9243 				goto done;
9244 			/* No backup needed since objects did not change. */
9245 			create_backup = 0;
9246 		}
9247 	}
9248 
9249 	pid = NULL;
9250 	STAILQ_FOREACH(qid, &commits, entry) {
9251 
9252 		commit_id = qid->id;
9253 		parent_id = pid ? pid->id : yca_id;
9254 		pid = qid;
9255 
9256 		memset(&upa, 0, sizeof(upa));
9257 		error = got_worktree_rebase_merge_files(&merged_paths,
9258 		    worktree, fileindex, parent_id, commit_id, repo,
9259 		    update_progress, &upa, check_cancelled, NULL);
9260 		if (error)
9261 			goto done;
9262 
9263 		print_merge_progress_stats(&upa);
9264 		if (upa.conflicts > 0 || upa.missing > 0 ||
9265 		    upa.not_deleted > 0 || upa.unversioned > 0) {
9266 			if (upa.conflicts > 0) {
9267 				error = show_rebase_merge_conflict(qid->id,
9268 				    repo);
9269 				if (error)
9270 					goto done;
9271 			}
9272 			got_worktree_rebase_pathlist_free(&merged_paths);
9273 			break;
9274 		}
9275 
9276 		error = rebase_commit(&merged_paths, worktree, fileindex,
9277 		    tmp_branch, commit_id, repo);
9278 		got_worktree_rebase_pathlist_free(&merged_paths);
9279 		if (error)
9280 			goto done;
9281 	}
9282 
9283 	if (upa.conflicts > 0 || upa.missing > 0 ||
9284 	    upa.not_deleted > 0 || upa.unversioned > 0) {
9285 		error = got_worktree_rebase_postpone(worktree, fileindex);
9286 		if (error)
9287 			goto done;
9288 		if (upa.conflicts > 0 && upa.missing == 0 &&
9289 		    upa.not_deleted == 0 && upa.unversioned == 0) {
9290 			error = got_error_msg(GOT_ERR_CONFLICTS,
9291 			    "conflicts must be resolved before rebasing "
9292 			    "can continue");
9293 		} else if (upa.conflicts > 0) {
9294 			error = got_error_msg(GOT_ERR_CONFLICTS,
9295 			    "conflicts must be resolved before rebasing "
9296 			    "can continue; changes destined for some "
9297 			    "files were not yet merged and should be "
9298 			    "merged manually if required before the "
9299 			    "rebase operation is continued");
9300 		} else {
9301 			error = got_error_msg(GOT_ERR_CONFLICTS,
9302 			    "changes destined for some files were not "
9303 			    "yet merged and should be merged manually "
9304 			    "if required before the rebase operation "
9305 			    "is continued");
9306 		}
9307 	} else
9308 		error = rebase_complete(worktree, fileindex, branch,
9309 		    new_base_branch, tmp_branch, repo, create_backup);
9310 done:
9311 	got_object_id_queue_free(&commits);
9312 	free(branch_head_commit_id);
9313 	free(resume_commit_id);
9314 	free(yca_id);
9315 	if (commit)
9316 		got_object_commit_close(commit);
9317 	if (branch)
9318 		got_ref_close(branch);
9319 	if (new_base_branch)
9320 		got_ref_close(new_base_branch);
9321 	if (tmp_branch)
9322 		got_ref_close(tmp_branch);
9323 	if (worktree)
9324 		got_worktree_close(worktree);
9325 	if (repo) {
9326 		const struct got_error *close_err = got_repo_close(repo);
9327 		if (error == NULL)
9328 			error = close_err;
9329 	}
9330 	return error;
9331 }
9332 
9333 __dead static void
9334 usage_histedit(void)
9335 {
9336 	fprintf(stderr, "usage: %s histedit [-a] [-c] [-e] [-f] "
9337 	    "[-F histedit-script] [-m] [-l] [-X] [branch]\n",
9338 	    getprogname());
9339 	exit(1);
9340 }
9341 
9342 #define GOT_HISTEDIT_PICK 'p'
9343 #define GOT_HISTEDIT_EDIT 'e'
9344 #define GOT_HISTEDIT_FOLD 'f'
9345 #define GOT_HISTEDIT_DROP 'd'
9346 #define GOT_HISTEDIT_MESG 'm'
9347 
9348 static struct got_histedit_cmd {
9349 	unsigned char code;
9350 	const char *name;
9351 	const char *desc;
9352 } got_histedit_cmds[] = {
9353 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
9354 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
9355 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
9356 	    "be used" },
9357 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
9358 	{ GOT_HISTEDIT_MESG, "mesg",
9359 	    "single-line log message for commit above (open editor if empty)" },
9360 };
9361 
9362 struct got_histedit_list_entry {
9363 	TAILQ_ENTRY(got_histedit_list_entry) entry;
9364 	struct got_object_id *commit_id;
9365 	const struct got_histedit_cmd *cmd;
9366 	char *logmsg;
9367 };
9368 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
9369 
9370 static const struct got_error *
9371 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
9372     FILE *f, struct got_repository *repo)
9373 {
9374 	const struct got_error *err = NULL;
9375 	char *logmsg = NULL, *id_str = NULL;
9376 	struct got_commit_object *commit = NULL;
9377 	int n;
9378 
9379 	err = got_object_open_as_commit(&commit, repo, commit_id);
9380 	if (err)
9381 		goto done;
9382 
9383 	err = get_short_logmsg(&logmsg, 34, commit);
9384 	if (err)
9385 		goto done;
9386 
9387 	err = got_object_id_str(&id_str, commit_id);
9388 	if (err)
9389 		goto done;
9390 
9391 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
9392 	if (n < 0)
9393 		err = got_ferror(f, GOT_ERR_IO);
9394 done:
9395 	if (commit)
9396 		got_object_commit_close(commit);
9397 	free(id_str);
9398 	free(logmsg);
9399 	return err;
9400 }
9401 
9402 static const struct got_error *
9403 histedit_write_commit_list(struct got_object_id_queue *commits,
9404     FILE *f, int edit_logmsg_only, int fold_only, int edit_only,
9405     struct got_repository *repo)
9406 {
9407 	const struct got_error *err = NULL;
9408 	struct got_object_qid *qid;
9409 	const char *histedit_cmd = NULL;
9410 
9411 	if (STAILQ_EMPTY(commits))
9412 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
9413 
9414 	STAILQ_FOREACH(qid, commits, entry) {
9415 		histedit_cmd = got_histedit_cmds[0].name;
9416 		if (edit_only)
9417 			histedit_cmd = "edit";
9418 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
9419 			histedit_cmd = "fold";
9420 		err = histedit_write_commit(qid->id, histedit_cmd, f, repo);
9421 		if (err)
9422 			break;
9423 		if (edit_logmsg_only) {
9424 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
9425 			if (n < 0) {
9426 				err = got_ferror(f, GOT_ERR_IO);
9427 				break;
9428 			}
9429 		}
9430 	}
9431 
9432 	return err;
9433 }
9434 
9435 static const struct got_error *
9436 write_cmd_list(FILE *f, const char *branch_name,
9437     struct got_object_id_queue *commits)
9438 {
9439 	const struct got_error *err = NULL;
9440 	size_t i;
9441 	int n;
9442 	char *id_str;
9443 	struct got_object_qid *qid;
9444 
9445 	qid = STAILQ_FIRST(commits);
9446 	err = got_object_id_str(&id_str, qid->id);
9447 	if (err)
9448 		return err;
9449 
9450 	n = fprintf(f,
9451 	    "# Editing the history of branch '%s' starting at\n"
9452 	    "# commit %s\n"
9453 	    "# Commits will be processed in order from top to "
9454 	    "bottom of this file.\n", branch_name, id_str);
9455 	if (n < 0) {
9456 		err = got_ferror(f, GOT_ERR_IO);
9457 		goto done;
9458 	}
9459 
9460 	n = fprintf(f, "# Available histedit commands:\n");
9461 	if (n < 0) {
9462 		err = got_ferror(f, GOT_ERR_IO);
9463 		goto done;
9464 	}
9465 
9466 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
9467 		struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
9468 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
9469 		    cmd->desc);
9470 		if (n < 0) {
9471 			err = got_ferror(f, GOT_ERR_IO);
9472 			break;
9473 		}
9474 	}
9475 done:
9476 	free(id_str);
9477 	return err;
9478 }
9479 
9480 static const struct got_error *
9481 histedit_syntax_error(int lineno)
9482 {
9483 	static char msg[42];
9484 	int ret;
9485 
9486 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
9487 	    lineno);
9488 	if (ret == -1 || ret >= sizeof(msg))
9489 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
9490 
9491 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
9492 }
9493 
9494 static const struct got_error *
9495 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
9496     char *logmsg, struct got_repository *repo)
9497 {
9498 	const struct got_error *err;
9499 	struct got_commit_object *folded_commit = NULL;
9500 	char *id_str, *folded_logmsg = NULL;
9501 
9502 	err = got_object_id_str(&id_str, hle->commit_id);
9503 	if (err)
9504 		return err;
9505 
9506 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
9507 	if (err)
9508 		goto done;
9509 
9510 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
9511 	if (err)
9512 		goto done;
9513 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
9514 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
9515 	    folded_logmsg) == -1) {
9516 		err = got_error_from_errno("asprintf");
9517 	}
9518 done:
9519 	if (folded_commit)
9520 		got_object_commit_close(folded_commit);
9521 	free(id_str);
9522 	free(folded_logmsg);
9523 	return err;
9524 }
9525 
9526 static struct got_histedit_list_entry *
9527 get_folded_commits(struct got_histedit_list_entry *hle)
9528 {
9529 	struct got_histedit_list_entry *prev, *folded = NULL;
9530 
9531 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
9532 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
9533 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
9534 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
9535 			folded = prev;
9536 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
9537 	}
9538 
9539 	return folded;
9540 }
9541 
9542 static const struct got_error *
9543 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
9544     struct got_repository *repo)
9545 {
9546 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
9547 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
9548 	const struct got_error *err = NULL;
9549 	struct got_commit_object *commit = NULL;
9550 	int logmsg_len;
9551 	int fd;
9552 	struct got_histedit_list_entry *folded = NULL;
9553 
9554 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
9555 	if (err)
9556 		return err;
9557 
9558 	folded = get_folded_commits(hle);
9559 	if (folded) {
9560 		while (folded != hle) {
9561 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
9562 				folded = TAILQ_NEXT(folded, entry);
9563 				continue;
9564 			}
9565 			err = append_folded_commit_msg(&new_msg, folded,
9566 			    logmsg, repo);
9567 			if (err)
9568 				goto done;
9569 			free(logmsg);
9570 			logmsg = new_msg;
9571 			folded = TAILQ_NEXT(folded, entry);
9572 		}
9573 	}
9574 
9575 	err = got_object_id_str(&id_str, hle->commit_id);
9576 	if (err)
9577 		goto done;
9578 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
9579 	if (err)
9580 		goto done;
9581 	logmsg_len = asprintf(&new_msg,
9582 	    "%s\n# original log message of commit %s: %s",
9583 	    logmsg ? logmsg : "", id_str, orig_logmsg);
9584 	if (logmsg_len == -1) {
9585 		err = got_error_from_errno("asprintf");
9586 		goto done;
9587 	}
9588 	free(logmsg);
9589 	logmsg = new_msg;
9590 
9591 	err = got_object_id_str(&id_str, hle->commit_id);
9592 	if (err)
9593 		goto done;
9594 
9595 	err = got_opentemp_named_fd(&logmsg_path, &fd,
9596 	    GOT_TMPDIR_STR "/got-logmsg");
9597 	if (err)
9598 		goto done;
9599 
9600 	write(fd, logmsg, logmsg_len);
9601 	close(fd);
9602 
9603 	err = get_editor(&editor);
9604 	if (err)
9605 		goto done;
9606 
9607 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
9608 	    logmsg_len, 0);
9609 	if (err) {
9610 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
9611 			goto done;
9612 		err = NULL;
9613 		hle->logmsg = strdup(new_msg);
9614 		if (hle->logmsg == NULL)
9615 			err = got_error_from_errno("strdup");
9616 	}
9617 done:
9618 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
9619 		err = got_error_from_errno2("unlink", logmsg_path);
9620 	free(logmsg_path);
9621 	free(logmsg);
9622 	free(orig_logmsg);
9623 	free(editor);
9624 	if (commit)
9625 		got_object_commit_close(commit);
9626 	return err;
9627 }
9628 
9629 static const struct got_error *
9630 histedit_parse_list(struct got_histedit_list *histedit_cmds,
9631     FILE *f, struct got_repository *repo)
9632 {
9633 	const struct got_error *err = NULL;
9634 	char *line = NULL, *p, *end;
9635 	size_t i, size;
9636 	ssize_t len;
9637 	int lineno = 0;
9638 	const struct got_histedit_cmd *cmd;
9639 	struct got_object_id *commit_id = NULL;
9640 	struct got_histedit_list_entry *hle = NULL;
9641 
9642 	for (;;) {
9643 		len = getline(&line, &size, f);
9644 		if (len == -1) {
9645 			const struct got_error *getline_err;
9646 			if (feof(f))
9647 				break;
9648 			getline_err = got_error_from_errno("getline");
9649 			err = got_ferror(f, getline_err->code);
9650 			break;
9651 		}
9652 		lineno++;
9653 		p = line;
9654 		while (isspace((unsigned char)p[0]))
9655 			p++;
9656 		if (p[0] == '#' || p[0] == '\0') {
9657 			free(line);
9658 			line = NULL;
9659 			continue;
9660 		}
9661 		cmd = NULL;
9662 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
9663 			cmd = &got_histedit_cmds[i];
9664 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
9665 			    isspace((unsigned char)p[strlen(cmd->name)])) {
9666 				p += strlen(cmd->name);
9667 				break;
9668 			}
9669 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
9670 				p++;
9671 				break;
9672 			}
9673 		}
9674 		if (i == nitems(got_histedit_cmds)) {
9675 			err = histedit_syntax_error(lineno);
9676 			break;
9677 		}
9678 		while (isspace((unsigned char)p[0]))
9679 			p++;
9680 		if (cmd->code == GOT_HISTEDIT_MESG) {
9681 			if (hle == NULL || hle->logmsg != NULL) {
9682 				err = got_error(GOT_ERR_HISTEDIT_CMD);
9683 				break;
9684 			}
9685 			if (p[0] == '\0') {
9686 				err = histedit_edit_logmsg(hle, repo);
9687 				if (err)
9688 					break;
9689 			} else {
9690 				hle->logmsg = strdup(p);
9691 				if (hle->logmsg == NULL) {
9692 					err = got_error_from_errno("strdup");
9693 					break;
9694 				}
9695 			}
9696 			free(line);
9697 			line = NULL;
9698 			continue;
9699 		} else {
9700 			end = p;
9701 			while (end[0] && !isspace((unsigned char)end[0]))
9702 				end++;
9703 			*end = '\0';
9704 
9705 			err = got_object_resolve_id_str(&commit_id, repo, p);
9706 			if (err) {
9707 				/* override error code */
9708 				err = histedit_syntax_error(lineno);
9709 				break;
9710 			}
9711 		}
9712 		hle = malloc(sizeof(*hle));
9713 		if (hle == NULL) {
9714 			err = got_error_from_errno("malloc");
9715 			break;
9716 		}
9717 		hle->cmd = cmd;
9718 		hle->commit_id = commit_id;
9719 		hle->logmsg = NULL;
9720 		commit_id = NULL;
9721 		free(line);
9722 		line = NULL;
9723 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
9724 	}
9725 
9726 	free(line);
9727 	free(commit_id);
9728 	return err;
9729 }
9730 
9731 static const struct got_error *
9732 histedit_check_script(struct got_histedit_list *histedit_cmds,
9733     struct got_object_id_queue *commits, struct got_repository *repo)
9734 {
9735 	const struct got_error *err = NULL;
9736 	struct got_object_qid *qid;
9737 	struct got_histedit_list_entry *hle;
9738 	static char msg[92];
9739 	char *id_str;
9740 
9741 	if (TAILQ_EMPTY(histedit_cmds))
9742 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
9743 		    "histedit script contains no commands");
9744 	if (STAILQ_EMPTY(commits))
9745 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
9746 
9747 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
9748 		struct got_histedit_list_entry *hle2;
9749 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
9750 			if (hle == hle2)
9751 				continue;
9752 			if (got_object_id_cmp(hle->commit_id,
9753 			    hle2->commit_id) != 0)
9754 				continue;
9755 			err = got_object_id_str(&id_str, hle->commit_id);
9756 			if (err)
9757 				return err;
9758 			snprintf(msg, sizeof(msg), "commit %s is listed "
9759 			    "more than once in histedit script", id_str);
9760 			free(id_str);
9761 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
9762 		}
9763 	}
9764 
9765 	STAILQ_FOREACH(qid, commits, entry) {
9766 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
9767 			if (got_object_id_cmp(qid->id, hle->commit_id) == 0)
9768 				break;
9769 		}
9770 		if (hle == NULL) {
9771 			err = got_object_id_str(&id_str, qid->id);
9772 			if (err)
9773 				return err;
9774 			snprintf(msg, sizeof(msg),
9775 			    "commit %s missing from histedit script", id_str);
9776 			free(id_str);
9777 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
9778 		}
9779 	}
9780 
9781 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
9782 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
9783 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
9784 		    "last commit in histedit script cannot be folded");
9785 
9786 	return NULL;
9787 }
9788 
9789 static const struct got_error *
9790 histedit_run_editor(struct got_histedit_list *histedit_cmds,
9791     const char *path, struct got_object_id_queue *commits,
9792     struct got_repository *repo)
9793 {
9794 	const struct got_error *err = NULL;
9795 	char *editor;
9796 	FILE *f = NULL;
9797 
9798 	err = get_editor(&editor);
9799 	if (err)
9800 		return err;
9801 
9802 	if (spawn_editor(editor, path) == -1) {
9803 		err = got_error_from_errno("failed spawning editor");
9804 		goto done;
9805 	}
9806 
9807 	f = fopen(path, "r");
9808 	if (f == NULL) {
9809 		err = got_error_from_errno("fopen");
9810 		goto done;
9811 	}
9812 	err = histedit_parse_list(histedit_cmds, f, repo);
9813 	if (err)
9814 		goto done;
9815 
9816 	err = histedit_check_script(histedit_cmds, commits, repo);
9817 done:
9818 	if (f && fclose(f) == EOF && err == NULL)
9819 		err = got_error_from_errno("fclose");
9820 	free(editor);
9821 	return err;
9822 }
9823 
9824 static const struct got_error *
9825 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
9826     struct got_object_id_queue *, const char *, const char *,
9827     struct got_repository *);
9828 
9829 static const struct got_error *
9830 histedit_edit_script(struct got_histedit_list *histedit_cmds,
9831     struct got_object_id_queue *commits, const char *branch_name,
9832     int edit_logmsg_only, int fold_only, int edit_only,
9833     struct got_repository *repo)
9834 {
9835 	const struct got_error *err;
9836 	FILE *f = NULL;
9837 	char *path = NULL;
9838 
9839 	err = got_opentemp_named(&path, &f, "got-histedit");
9840 	if (err)
9841 		return err;
9842 
9843 	err = write_cmd_list(f, branch_name, commits);
9844 	if (err)
9845 		goto done;
9846 
9847 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
9848 	    fold_only, edit_only, repo);
9849 	if (err)
9850 		goto done;
9851 
9852 	if (edit_logmsg_only || fold_only || edit_only) {
9853 		rewind(f);
9854 		err = histedit_parse_list(histedit_cmds, f, repo);
9855 	} else {
9856 		if (fclose(f) == EOF) {
9857 			err = got_error_from_errno("fclose");
9858 			goto done;
9859 		}
9860 		f = NULL;
9861 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
9862 		if (err) {
9863 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
9864 			    err->code != GOT_ERR_HISTEDIT_CMD)
9865 				goto done;
9866 			err = histedit_edit_list_retry(histedit_cmds, err,
9867 			    commits, path, branch_name, repo);
9868 		}
9869 	}
9870 done:
9871 	if (f && fclose(f) == EOF && err == NULL)
9872 		err = got_error_from_errno("fclose");
9873 	if (path && unlink(path) != 0 && err == NULL)
9874 		err = got_error_from_errno2("unlink", path);
9875 	free(path);
9876 	return err;
9877 }
9878 
9879 static const struct got_error *
9880 histedit_save_list(struct got_histedit_list *histedit_cmds,
9881     struct got_worktree *worktree, struct got_repository *repo)
9882 {
9883 	const struct got_error *err = NULL;
9884 	char *path = NULL;
9885 	FILE *f = NULL;
9886 	struct got_histedit_list_entry *hle;
9887 	struct got_commit_object *commit = NULL;
9888 
9889 	err = got_worktree_get_histedit_script_path(&path, worktree);
9890 	if (err)
9891 		return err;
9892 
9893 	f = fopen(path, "w");
9894 	if (f == NULL) {
9895 		err = got_error_from_errno2("fopen", path);
9896 		goto done;
9897 	}
9898 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
9899 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
9900 		    repo);
9901 		if (err)
9902 			break;
9903 
9904 		if (hle->logmsg) {
9905 			int n = fprintf(f, "%c %s\n",
9906 			    GOT_HISTEDIT_MESG, hle->logmsg);
9907 			if (n < 0) {
9908 				err = got_ferror(f, GOT_ERR_IO);
9909 				break;
9910 			}
9911 		}
9912 	}
9913 done:
9914 	if (f && fclose(f) == EOF && err == NULL)
9915 		err = got_error_from_errno("fclose");
9916 	free(path);
9917 	if (commit)
9918 		got_object_commit_close(commit);
9919 	return err;
9920 }
9921 
9922 void
9923 histedit_free_list(struct got_histedit_list *histedit_cmds)
9924 {
9925 	struct got_histedit_list_entry *hle;
9926 
9927 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
9928 		TAILQ_REMOVE(histedit_cmds, hle, entry);
9929 		free(hle);
9930 	}
9931 }
9932 
9933 static const struct got_error *
9934 histedit_load_list(struct got_histedit_list *histedit_cmds,
9935     const char *path, struct got_repository *repo)
9936 {
9937 	const struct got_error *err = NULL;
9938 	FILE *f = NULL;
9939 
9940 	f = fopen(path, "r");
9941 	if (f == NULL) {
9942 		err = got_error_from_errno2("fopen", path);
9943 		goto done;
9944 	}
9945 
9946 	err = histedit_parse_list(histedit_cmds, f, repo);
9947 done:
9948 	if (f && fclose(f) == EOF && err == NULL)
9949 		err = got_error_from_errno("fclose");
9950 	return err;
9951 }
9952 
9953 static const struct got_error *
9954 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
9955     const struct got_error *edit_err, struct got_object_id_queue *commits,
9956     const char *path, const char *branch_name, struct got_repository *repo)
9957 {
9958 	const struct got_error *err = NULL, *prev_err = edit_err;
9959 	int resp = ' ';
9960 
9961 	while (resp != 'c' && resp != 'r' && resp != 'a') {
9962 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
9963 		    "or (a)bort: ", getprogname(), prev_err->msg);
9964 		resp = getchar();
9965 		if (resp == '\n')
9966 			resp = getchar();
9967 		if (resp == 'c') {
9968 			histedit_free_list(histedit_cmds);
9969 			err = histedit_run_editor(histedit_cmds, path, commits,
9970 			    repo);
9971 			if (err) {
9972 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
9973 				    err->code != GOT_ERR_HISTEDIT_CMD)
9974 					break;
9975 				prev_err = err;
9976 				resp = ' ';
9977 				continue;
9978 			}
9979 			break;
9980 		} else if (resp == 'r') {
9981 			histedit_free_list(histedit_cmds);
9982 			err = histedit_edit_script(histedit_cmds,
9983 			    commits, branch_name, 0, 0, 0, repo);
9984 			if (err) {
9985 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
9986 				    err->code != GOT_ERR_HISTEDIT_CMD)
9987 					break;
9988 				prev_err = err;
9989 				resp = ' ';
9990 				continue;
9991 			}
9992 			break;
9993 		} else if (resp == 'a') {
9994 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
9995 			break;
9996 		} else
9997 			printf("invalid response '%c'\n", resp);
9998 	}
9999 
10000 	return err;
10001 }
10002 
10003 static const struct got_error *
10004 histedit_complete(struct got_worktree *worktree,
10005     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
10006     struct got_reference *branch, struct got_repository *repo)
10007 {
10008 	printf("Switching work tree to %s\n",
10009 	    got_ref_get_symref_target(branch));
10010 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
10011 	    branch, repo);
10012 }
10013 
10014 static const struct got_error *
10015 show_histedit_progress(struct got_commit_object *commit,
10016     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
10017 {
10018 	const struct got_error *err;
10019 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
10020 
10021 	err = got_object_id_str(&old_id_str, hle->commit_id);
10022 	if (err)
10023 		goto done;
10024 
10025 	if (new_id) {
10026 		err = got_object_id_str(&new_id_str, new_id);
10027 		if (err)
10028 			goto done;
10029 	}
10030 
10031 	old_id_str[12] = '\0';
10032 	if (new_id_str)
10033 		new_id_str[12] = '\0';
10034 
10035 	if (hle->logmsg) {
10036 		logmsg = strdup(hle->logmsg);
10037 		if (logmsg == NULL) {
10038 			err = got_error_from_errno("strdup");
10039 			goto done;
10040 		}
10041 		trim_logmsg(logmsg, 42);
10042 	} else {
10043 		err = get_short_logmsg(&logmsg, 42, commit);
10044 		if (err)
10045 			goto done;
10046 	}
10047 
10048 	switch (hle->cmd->code) {
10049 	case GOT_HISTEDIT_PICK:
10050 	case GOT_HISTEDIT_EDIT:
10051 		printf("%s -> %s: %s\n", old_id_str,
10052 		    new_id_str ? new_id_str : "no-op change", logmsg);
10053 		break;
10054 	case GOT_HISTEDIT_DROP:
10055 	case GOT_HISTEDIT_FOLD:
10056 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
10057 		    logmsg);
10058 		break;
10059 	default:
10060 		break;
10061 	}
10062 done:
10063 	free(old_id_str);
10064 	free(new_id_str);
10065 	return err;
10066 }
10067 
10068 static const struct got_error *
10069 histedit_commit(struct got_pathlist_head *merged_paths,
10070     struct got_worktree *worktree, struct got_fileindex *fileindex,
10071     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
10072     struct got_repository *repo)
10073 {
10074 	const struct got_error *err;
10075 	struct got_commit_object *commit;
10076 	struct got_object_id *new_commit_id;
10077 
10078 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
10079 	    && hle->logmsg == NULL) {
10080 		err = histedit_edit_logmsg(hle, repo);
10081 		if (err)
10082 			return err;
10083 	}
10084 
10085 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
10086 	if (err)
10087 		return err;
10088 
10089 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
10090 	    worktree, fileindex, tmp_branch, commit, hle->commit_id,
10091 	    hle->logmsg, repo);
10092 	if (err) {
10093 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
10094 			goto done;
10095 		err = show_histedit_progress(commit, hle, NULL);
10096 	} else {
10097 		err = show_histedit_progress(commit, hle, new_commit_id);
10098 		free(new_commit_id);
10099 	}
10100 done:
10101 	got_object_commit_close(commit);
10102 	return err;
10103 }
10104 
10105 static const struct got_error *
10106 histedit_skip_commit(struct got_histedit_list_entry *hle,
10107     struct got_worktree *worktree, struct got_repository *repo)
10108 {
10109 	const struct got_error *error;
10110 	struct got_commit_object *commit;
10111 
10112 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
10113 	    repo);
10114 	if (error)
10115 		return error;
10116 
10117 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
10118 	if (error)
10119 		return error;
10120 
10121 	error = show_histedit_progress(commit, hle, NULL);
10122 	got_object_commit_close(commit);
10123 	return error;
10124 }
10125 
10126 static const struct got_error *
10127 check_local_changes(void *arg, unsigned char status,
10128     unsigned char staged_status, const char *path,
10129     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
10130     struct got_object_id *commit_id, int dirfd, const char *de_name)
10131 {
10132 	int *have_local_changes = arg;
10133 
10134 	switch (status) {
10135 	case GOT_STATUS_ADD:
10136 	case GOT_STATUS_DELETE:
10137 	case GOT_STATUS_MODIFY:
10138 	case GOT_STATUS_CONFLICT:
10139 		*have_local_changes = 1;
10140 		return got_error(GOT_ERR_CANCELLED);
10141 	default:
10142 		break;
10143 	}
10144 
10145 	switch (staged_status) {
10146 	case GOT_STATUS_ADD:
10147 	case GOT_STATUS_DELETE:
10148 	case GOT_STATUS_MODIFY:
10149 		*have_local_changes = 1;
10150 		return got_error(GOT_ERR_CANCELLED);
10151 	default:
10152 		break;
10153 	}
10154 
10155 	return NULL;
10156 }
10157 
10158 static const struct got_error *
10159 cmd_histedit(int argc, char *argv[])
10160 {
10161 	const struct got_error *error = NULL;
10162 	struct got_worktree *worktree = NULL;
10163 	struct got_fileindex *fileindex = NULL;
10164 	struct got_repository *repo = NULL;
10165 	char *cwd = NULL;
10166 	struct got_reference *branch = NULL;
10167 	struct got_reference *tmp_branch = NULL;
10168 	struct got_object_id *resume_commit_id = NULL;
10169 	struct got_object_id *base_commit_id = NULL;
10170 	struct got_object_id *head_commit_id = NULL;
10171 	struct got_commit_object *commit = NULL;
10172 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
10173 	struct got_update_progress_arg upa;
10174 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
10175 	int edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
10176 	int list_backups = 0, delete_backups = 0;
10177 	const char *edit_script_path = NULL;
10178 	struct got_object_id_queue commits;
10179 	struct got_pathlist_head merged_paths;
10180 	const struct got_object_id_queue *parent_ids;
10181 	struct got_object_qid *pid;
10182 	struct got_histedit_list histedit_cmds;
10183 	struct got_histedit_list_entry *hle;
10184 
10185 	STAILQ_INIT(&commits);
10186 	TAILQ_INIT(&histedit_cmds);
10187 	TAILQ_INIT(&merged_paths);
10188 	memset(&upa, 0, sizeof(upa));
10189 
10190 	while ((ch = getopt(argc, argv, "acefF:mlX")) != -1) {
10191 		switch (ch) {
10192 		case 'a':
10193 			abort_edit = 1;
10194 			break;
10195 		case 'c':
10196 			continue_edit = 1;
10197 			break;
10198 		case 'e':
10199 			edit_only = 1;
10200 			break;
10201 		case 'f':
10202 			fold_only = 1;
10203 			break;
10204 		case 'F':
10205 			edit_script_path = optarg;
10206 			break;
10207 		case 'm':
10208 			edit_logmsg_only = 1;
10209 			break;
10210 		case 'l':
10211 			list_backups = 1;
10212 			break;
10213 		case 'X':
10214 			delete_backups = 1;
10215 			break;
10216 		default:
10217 			usage_histedit();
10218 			/* NOTREACHED */
10219 		}
10220 	}
10221 
10222 	argc -= optind;
10223 	argv += optind;
10224 
10225 #ifndef PROFILE
10226 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10227 	    "unveil", NULL) == -1)
10228 		err(1, "pledge");
10229 #endif
10230 	if (abort_edit && continue_edit)
10231 		option_conflict('a', 'c');
10232 	if (edit_script_path && edit_logmsg_only)
10233 		option_conflict('F', 'm');
10234 	if (abort_edit && edit_logmsg_only)
10235 		option_conflict('a', 'm');
10236 	if (continue_edit && edit_logmsg_only)
10237 		option_conflict('c', 'm');
10238 	if (abort_edit && fold_only)
10239 		option_conflict('a', 'f');
10240 	if (continue_edit && fold_only)
10241 		option_conflict('c', 'f');
10242 	if (fold_only && edit_logmsg_only)
10243 		option_conflict('f', 'm');
10244 	if (edit_script_path && fold_only)
10245 		option_conflict('F', 'f');
10246 	if (abort_edit && edit_only)
10247 		option_conflict('a', 'e');
10248 	if (continue_edit && edit_only)
10249 		option_conflict('c', 'e');
10250 	if (edit_only && edit_logmsg_only)
10251 		option_conflict('e', 'm');
10252 	if (edit_script_path && edit_only)
10253 		option_conflict('F', 'e');
10254 	if (list_backups) {
10255 		if (abort_edit)
10256 			option_conflict('l', 'a');
10257 		if (continue_edit)
10258 			option_conflict('l', 'c');
10259 		if (edit_script_path)
10260 			option_conflict('l', 'F');
10261 		if (edit_logmsg_only)
10262 			option_conflict('l', 'm');
10263 		if (fold_only)
10264 			option_conflict('l', 'f');
10265 		if (edit_only)
10266 			option_conflict('l', 'e');
10267 		if (delete_backups)
10268 			option_conflict('l', 'X');
10269 		if (argc != 0 && argc != 1)
10270 			usage_histedit();
10271 	} else if (delete_backups) {
10272 		if (abort_edit)
10273 			option_conflict('X', 'a');
10274 		if (continue_edit)
10275 			option_conflict('X', 'c');
10276 		if (edit_script_path)
10277 			option_conflict('X', 'F');
10278 		if (edit_logmsg_only)
10279 			option_conflict('X', 'm');
10280 		if (fold_only)
10281 			option_conflict('X', 'f');
10282 		if (edit_only)
10283 			option_conflict('X', 'e');
10284 		if (list_backups)
10285 			option_conflict('X', 'l');
10286 		if (argc != 0 && argc != 1)
10287 			usage_histedit();
10288 	} else if (argc != 0)
10289 		usage_histedit();
10290 
10291 	/*
10292 	 * This command cannot apply unveil(2) in all cases because the
10293 	 * user may choose to run an editor to edit the histedit script
10294 	 * and to edit individual commit log messages.
10295 	 * unveil(2) traverses exec(2); if an editor is used we have to
10296 	 * apply unveil after edit script and log messages have been written.
10297 	 * XXX TODO: Make use of unveil(2) where possible.
10298 	 */
10299 
10300 	cwd = getcwd(NULL, 0);
10301 	if (cwd == NULL) {
10302 		error = got_error_from_errno("getcwd");
10303 		goto done;
10304 	}
10305 	error = got_worktree_open(&worktree, cwd);
10306 	if (error) {
10307 		if (list_backups || delete_backups) {
10308 			if (error->code != GOT_ERR_NOT_WORKTREE)
10309 				goto done;
10310 		} else {
10311 			if (error->code == GOT_ERR_NOT_WORKTREE)
10312 				error = wrap_not_worktree_error(error,
10313 				    "histedit", cwd);
10314 			goto done;
10315 		}
10316 	}
10317 
10318 	if (list_backups || delete_backups) {
10319 		error = got_repo_open(&repo,
10320 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10321 		    NULL);
10322 		if (error != NULL)
10323 			goto done;
10324 		error = apply_unveil(got_repo_get_path(repo), 0,
10325 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
10326 		if (error)
10327 			goto done;
10328 		error = process_backup_refs(
10329 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
10330 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
10331 		goto done; /* nothing else to do */
10332 	}
10333 
10334 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10335 	    NULL);
10336 	if (error != NULL)
10337 		goto done;
10338 
10339 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10340 	if (error)
10341 		goto done;
10342 	if (rebase_in_progress) {
10343 		error = got_error(GOT_ERR_REBASING);
10344 		goto done;
10345 	}
10346 
10347 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10348 	    repo);
10349 	if (error)
10350 		goto done;
10351 	if (merge_in_progress) {
10352 		error = got_error(GOT_ERR_MERGE_BUSY);
10353 		goto done;
10354 	}
10355 
10356 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
10357 	if (error)
10358 		goto done;
10359 
10360 	if (edit_in_progress && edit_logmsg_only) {
10361 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10362 		    "histedit operation is in progress in this "
10363 		    "work tree and must be continued or aborted "
10364 		    "before the -m option can be used");
10365 		goto done;
10366 	}
10367 	if (edit_in_progress && fold_only) {
10368 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10369 		    "histedit operation is in progress in this "
10370 		    "work tree and must be continued or aborted "
10371 		    "before the -f option can be used");
10372 		goto done;
10373 	}
10374 	if (edit_in_progress && edit_only) {
10375 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10376 		    "histedit operation is in progress in this "
10377 		    "work tree and must be continued or aborted "
10378 		    "before the -e option can be used");
10379 		goto done;
10380 	}
10381 
10382 	if (edit_in_progress && abort_edit) {
10383 		error = got_worktree_histedit_continue(&resume_commit_id,
10384 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
10385 		    worktree, repo);
10386 		if (error)
10387 			goto done;
10388 		printf("Switching work tree to %s\n",
10389 		    got_ref_get_symref_target(branch));
10390 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
10391 		    branch, base_commit_id, abort_progress, &upa);
10392 		if (error)
10393 			goto done;
10394 		printf("Histedit of %s aborted\n",
10395 		    got_ref_get_symref_target(branch));
10396 		print_merge_progress_stats(&upa);
10397 		goto done; /* nothing else to do */
10398 	} else if (abort_edit) {
10399 		error = got_error(GOT_ERR_NOT_HISTEDIT);
10400 		goto done;
10401 	}
10402 
10403 	if (continue_edit) {
10404 		char *path;
10405 
10406 		if (!edit_in_progress) {
10407 			error = got_error(GOT_ERR_NOT_HISTEDIT);
10408 			goto done;
10409 		}
10410 
10411 		error = got_worktree_get_histedit_script_path(&path, worktree);
10412 		if (error)
10413 			goto done;
10414 
10415 		error = histedit_load_list(&histedit_cmds, path, repo);
10416 		free(path);
10417 		if (error)
10418 			goto done;
10419 
10420 		error = got_worktree_histedit_continue(&resume_commit_id,
10421 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
10422 		    worktree, repo);
10423 		if (error)
10424 			goto done;
10425 
10426 		error = got_ref_resolve(&head_commit_id, repo, branch);
10427 		if (error)
10428 			goto done;
10429 
10430 		error = got_object_open_as_commit(&commit, repo,
10431 		    head_commit_id);
10432 		if (error)
10433 			goto done;
10434 		parent_ids = got_object_commit_get_parent_ids(commit);
10435 		pid = STAILQ_FIRST(parent_ids);
10436 		if (pid == NULL) {
10437 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10438 			goto done;
10439 		}
10440 		error = collect_commits(&commits, head_commit_id, pid->id,
10441 		    base_commit_id, got_worktree_get_path_prefix(worktree),
10442 		    GOT_ERR_HISTEDIT_PATH, repo);
10443 		got_object_commit_close(commit);
10444 		commit = NULL;
10445 		if (error)
10446 			goto done;
10447 	} else {
10448 		if (edit_in_progress) {
10449 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
10450 			goto done;
10451 		}
10452 
10453 		error = got_ref_open(&branch, repo,
10454 		    got_worktree_get_head_ref_name(worktree), 0);
10455 		if (error != NULL)
10456 			goto done;
10457 
10458 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
10459 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
10460 			    "will not edit commit history of a branch outside "
10461 			    "the \"refs/heads/\" reference namespace");
10462 			goto done;
10463 		}
10464 
10465 		error = got_ref_resolve(&head_commit_id, repo, branch);
10466 		got_ref_close(branch);
10467 		branch = NULL;
10468 		if (error)
10469 			goto done;
10470 
10471 		error = got_object_open_as_commit(&commit, repo,
10472 		    head_commit_id);
10473 		if (error)
10474 			goto done;
10475 		parent_ids = got_object_commit_get_parent_ids(commit);
10476 		pid = STAILQ_FIRST(parent_ids);
10477 		if (pid == NULL) {
10478 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10479 			goto done;
10480 		}
10481 		error = collect_commits(&commits, head_commit_id, pid->id,
10482 		    got_worktree_get_base_commit_id(worktree),
10483 		    got_worktree_get_path_prefix(worktree),
10484 		    GOT_ERR_HISTEDIT_PATH, repo);
10485 		got_object_commit_close(commit);
10486 		commit = NULL;
10487 		if (error)
10488 			goto done;
10489 
10490 		if (STAILQ_EMPTY(&commits)) {
10491 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10492 			goto done;
10493 		}
10494 
10495 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
10496 		    &base_commit_id, &fileindex, worktree, repo);
10497 		if (error)
10498 			goto done;
10499 
10500 		if (edit_script_path) {
10501 			error = histedit_load_list(&histedit_cmds,
10502 			    edit_script_path, repo);
10503 			if (error) {
10504 				got_worktree_histedit_abort(worktree, fileindex,
10505 				    repo, branch, base_commit_id,
10506 				    abort_progress, &upa);
10507 				print_merge_progress_stats(&upa);
10508 				goto done;
10509 			}
10510 		} else {
10511 			const char *branch_name;
10512 			branch_name = got_ref_get_symref_target(branch);
10513 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
10514 				branch_name += 11;
10515 			error = histedit_edit_script(&histedit_cmds, &commits,
10516 			    branch_name, edit_logmsg_only, fold_only,
10517 			    edit_only, repo);
10518 			if (error) {
10519 				got_worktree_histedit_abort(worktree, fileindex,
10520 				    repo, branch, base_commit_id,
10521 				    abort_progress, &upa);
10522 				print_merge_progress_stats(&upa);
10523 				goto done;
10524 			}
10525 
10526 		}
10527 
10528 		error = histedit_save_list(&histedit_cmds, worktree,
10529 		    repo);
10530 		if (error) {
10531 			got_worktree_histedit_abort(worktree, fileindex,
10532 			    repo, branch, base_commit_id,
10533 			    abort_progress, &upa);
10534 			print_merge_progress_stats(&upa);
10535 			goto done;
10536 		}
10537 
10538 	}
10539 
10540 	error = histedit_check_script(&histedit_cmds, &commits, repo);
10541 	if (error)
10542 		goto done;
10543 
10544 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
10545 		if (resume_commit_id) {
10546 			if (got_object_id_cmp(hle->commit_id,
10547 			    resume_commit_id) != 0)
10548 				continue;
10549 
10550 			resume_commit_id = NULL;
10551 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
10552 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
10553 				error = histedit_skip_commit(hle, worktree,
10554 				    repo);
10555 				if (error)
10556 					goto done;
10557 			} else {
10558 				struct got_pathlist_head paths;
10559 				int have_changes = 0;
10560 
10561 				TAILQ_INIT(&paths);
10562 				error = got_pathlist_append(&paths, "", NULL);
10563 				if (error)
10564 					goto done;
10565 				error = got_worktree_status(worktree, &paths,
10566 				    repo, 0, check_local_changes, &have_changes,
10567 				    check_cancelled, NULL);
10568 				got_pathlist_free(&paths);
10569 				if (error) {
10570 					if (error->code != GOT_ERR_CANCELLED)
10571 						goto done;
10572 					if (sigint_received || sigpipe_received)
10573 						goto done;
10574 				}
10575 				if (have_changes) {
10576 					error = histedit_commit(NULL, worktree,
10577 					    fileindex, tmp_branch, hle, repo);
10578 					if (error)
10579 						goto done;
10580 				} else {
10581 					error = got_object_open_as_commit(
10582 					    &commit, repo, hle->commit_id);
10583 					if (error)
10584 						goto done;
10585 					error = show_histedit_progress(commit,
10586 					    hle, NULL);
10587 					got_object_commit_close(commit);
10588 					commit = NULL;
10589 					if (error)
10590 						goto done;
10591 				}
10592 			}
10593 			continue;
10594 		}
10595 
10596 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
10597 			error = histedit_skip_commit(hle, worktree, repo);
10598 			if (error)
10599 				goto done;
10600 			continue;
10601 		}
10602 
10603 		error = got_object_open_as_commit(&commit, repo,
10604 		    hle->commit_id);
10605 		if (error)
10606 			goto done;
10607 		parent_ids = got_object_commit_get_parent_ids(commit);
10608 		pid = STAILQ_FIRST(parent_ids);
10609 
10610 		error = got_worktree_histedit_merge_files(&merged_paths,
10611 		    worktree, fileindex, pid->id, hle->commit_id, repo,
10612 		    update_progress, &upa, check_cancelled, NULL);
10613 		if (error)
10614 			goto done;
10615 		got_object_commit_close(commit);
10616 		commit = NULL;
10617 
10618 		print_merge_progress_stats(&upa);
10619 		if (upa.conflicts > 0 || upa.missing > 0 ||
10620 		    upa.not_deleted > 0 || upa.unversioned > 0) {
10621 			if (upa.conflicts > 0) {
10622 				error = show_rebase_merge_conflict(
10623 				    hle->commit_id, repo);
10624 				if (error)
10625 					goto done;
10626 			}
10627 			got_worktree_rebase_pathlist_free(&merged_paths);
10628 			break;
10629 		}
10630 
10631 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
10632 			char *id_str;
10633 			error = got_object_id_str(&id_str, hle->commit_id);
10634 			if (error)
10635 				goto done;
10636 			printf("Stopping histedit for amending commit %s\n",
10637 			    id_str);
10638 			free(id_str);
10639 			got_worktree_rebase_pathlist_free(&merged_paths);
10640 			error = got_worktree_histedit_postpone(worktree,
10641 			    fileindex);
10642 			goto done;
10643 		}
10644 
10645 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
10646 			error = histedit_skip_commit(hle, worktree, repo);
10647 			if (error)
10648 				goto done;
10649 			continue;
10650 		}
10651 
10652 		error = histedit_commit(&merged_paths, worktree, fileindex,
10653 		    tmp_branch, hle, repo);
10654 		got_worktree_rebase_pathlist_free(&merged_paths);
10655 		if (error)
10656 			goto done;
10657 	}
10658 
10659 	if (upa.conflicts > 0 || upa.missing > 0 ||
10660 	    upa.not_deleted > 0 || upa.unversioned > 0) {
10661 		error = got_worktree_histedit_postpone(worktree, fileindex);
10662 		if (error)
10663 			goto done;
10664 		if (upa.conflicts > 0 && upa.missing == 0 &&
10665 		    upa.not_deleted == 0 && upa.unversioned == 0) {
10666 			error = got_error_msg(GOT_ERR_CONFLICTS,
10667 			    "conflicts must be resolved before histedit "
10668 			    "can continue");
10669 		} else if (upa.conflicts > 0) {
10670 			error = got_error_msg(GOT_ERR_CONFLICTS,
10671 			    "conflicts must be resolved before histedit "
10672 			    "can continue; changes destined for some "
10673 			    "files were not yet merged and should be "
10674 			    "merged manually if required before the "
10675 			    "histedit operation is continued");
10676 		} else {
10677 			error = got_error_msg(GOT_ERR_CONFLICTS,
10678 			    "changes destined for some files were not "
10679 			    "yet merged and should be merged manually "
10680 			    "if required before the histedit operation "
10681 			    "is continued");
10682 		}
10683 	} else
10684 		error = histedit_complete(worktree, fileindex, tmp_branch,
10685 		    branch, repo);
10686 done:
10687 	got_object_id_queue_free(&commits);
10688 	histedit_free_list(&histedit_cmds);
10689 	free(head_commit_id);
10690 	free(base_commit_id);
10691 	free(resume_commit_id);
10692 	if (commit)
10693 		got_object_commit_close(commit);
10694 	if (branch)
10695 		got_ref_close(branch);
10696 	if (tmp_branch)
10697 		got_ref_close(tmp_branch);
10698 	if (worktree)
10699 		got_worktree_close(worktree);
10700 	if (repo) {
10701 		const struct got_error *close_err = got_repo_close(repo);
10702 		if (error == NULL)
10703 			error = close_err;
10704 	}
10705 	return error;
10706 }
10707 
10708 __dead static void
10709 usage_integrate(void)
10710 {
10711 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
10712 	exit(1);
10713 }
10714 
10715 static const struct got_error *
10716 cmd_integrate(int argc, char *argv[])
10717 {
10718 	const struct got_error *error = NULL;
10719 	struct got_repository *repo = NULL;
10720 	struct got_worktree *worktree = NULL;
10721 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
10722 	const char *branch_arg = NULL;
10723 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
10724 	struct got_fileindex *fileindex = NULL;
10725 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
10726 	int ch;
10727 	struct got_update_progress_arg upa;
10728 
10729 	while ((ch = getopt(argc, argv, "")) != -1) {
10730 		switch (ch) {
10731 		default:
10732 			usage_integrate();
10733 			/* NOTREACHED */
10734 		}
10735 	}
10736 
10737 	argc -= optind;
10738 	argv += optind;
10739 
10740 	if (argc != 1)
10741 		usage_integrate();
10742 	branch_arg = argv[0];
10743 #ifndef PROFILE
10744 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10745 	    "unveil", NULL) == -1)
10746 		err(1, "pledge");
10747 #endif
10748 	cwd = getcwd(NULL, 0);
10749 	if (cwd == NULL) {
10750 		error = got_error_from_errno("getcwd");
10751 		goto done;
10752 	}
10753 
10754 	error = got_worktree_open(&worktree, cwd);
10755 	if (error) {
10756 		if (error->code == GOT_ERR_NOT_WORKTREE)
10757 			error = wrap_not_worktree_error(error, "integrate",
10758 			    cwd);
10759 		goto done;
10760 	}
10761 
10762 	error = check_rebase_or_histedit_in_progress(worktree);
10763 	if (error)
10764 		goto done;
10765 
10766 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10767 	    NULL);
10768 	if (error != NULL)
10769 		goto done;
10770 
10771 	error = apply_unveil(got_repo_get_path(repo), 0,
10772 	    got_worktree_get_root_path(worktree));
10773 	if (error)
10774 		goto done;
10775 
10776 	error = check_merge_in_progress(worktree, repo);
10777 	if (error)
10778 		goto done;
10779 
10780 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
10781 		error = got_error_from_errno("asprintf");
10782 		goto done;
10783 	}
10784 
10785 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
10786 	    &base_branch_ref, worktree, refname, repo);
10787 	if (error)
10788 		goto done;
10789 
10790 	refname = strdup(got_ref_get_name(branch_ref));
10791 	if (refname == NULL) {
10792 		error = got_error_from_errno("strdup");
10793 		got_worktree_integrate_abort(worktree, fileindex, repo,
10794 		    branch_ref, base_branch_ref);
10795 		goto done;
10796 	}
10797 	base_refname = strdup(got_ref_get_name(base_branch_ref));
10798 	if (base_refname == NULL) {
10799 		error = got_error_from_errno("strdup");
10800 		got_worktree_integrate_abort(worktree, fileindex, repo,
10801 		    branch_ref, base_branch_ref);
10802 		goto done;
10803 	}
10804 
10805 	error = got_ref_resolve(&commit_id, repo, branch_ref);
10806 	if (error)
10807 		goto done;
10808 
10809 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
10810 	if (error)
10811 		goto done;
10812 
10813 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
10814 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
10815 		    "specified branch has already been integrated");
10816 		got_worktree_integrate_abort(worktree, fileindex, repo,
10817 		    branch_ref, base_branch_ref);
10818 		goto done;
10819 	}
10820 
10821 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
10822 	if (error) {
10823 		if (error->code == GOT_ERR_ANCESTRY)
10824 			error = got_error(GOT_ERR_REBASE_REQUIRED);
10825 		got_worktree_integrate_abort(worktree, fileindex, repo,
10826 		    branch_ref, base_branch_ref);
10827 		goto done;
10828 	}
10829 
10830 	memset(&upa, 0, sizeof(upa));
10831 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
10832 	    branch_ref, base_branch_ref, update_progress, &upa,
10833 	    check_cancelled, NULL);
10834 	if (error)
10835 		goto done;
10836 
10837 	printf("Integrated %s into %s\n", refname, base_refname);
10838 	print_update_progress_stats(&upa);
10839 done:
10840 	if (repo) {
10841 		const struct got_error *close_err = got_repo_close(repo);
10842 		if (error == NULL)
10843 			error = close_err;
10844 	}
10845 	if (worktree)
10846 		got_worktree_close(worktree);
10847 	free(cwd);
10848 	free(base_commit_id);
10849 	free(commit_id);
10850 	free(refname);
10851 	free(base_refname);
10852 	return error;
10853 }
10854 
10855 __dead static void
10856 usage_merge(void)
10857 {
10858 	fprintf(stderr, "usage: %s merge [-a] [-c] [-n] [branch]\n",
10859 	    getprogname());
10860 	exit(1);
10861 }
10862 
10863 static const struct got_error *
10864 cmd_merge(int argc, char *argv[])
10865 {
10866 	const struct got_error *error = NULL;
10867 	struct got_worktree *worktree = NULL;
10868 	struct got_repository *repo = NULL;
10869 	struct got_fileindex *fileindex = NULL;
10870 	char *cwd = NULL, *id_str = NULL, *author = NULL;
10871 	struct got_reference *branch = NULL, *wt_branch = NULL;
10872 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
10873 	struct got_object_id *wt_branch_tip = NULL;
10874 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
10875 	int interrupt_merge = 0;
10876 	struct got_update_progress_arg upa;
10877 	struct got_object_id *merge_commit_id = NULL;
10878 	char *branch_name = NULL;
10879 
10880 	memset(&upa, 0, sizeof(upa));
10881 
10882 	while ((ch = getopt(argc, argv, "acn")) != -1) {
10883 		switch (ch) {
10884 		case 'a':
10885 			abort_merge = 1;
10886 			break;
10887 		case 'c':
10888 			continue_merge = 1;
10889 			break;
10890 		case 'n':
10891 			interrupt_merge = 1;
10892 			break;
10893 		default:
10894 			usage_rebase();
10895 			/* NOTREACHED */
10896 		}
10897 	}
10898 
10899 	argc -= optind;
10900 	argv += optind;
10901 
10902 #ifndef PROFILE
10903 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10904 	    "unveil", NULL) == -1)
10905 		err(1, "pledge");
10906 #endif
10907 
10908 	if (abort_merge && continue_merge)
10909 		option_conflict('a', 'c');
10910 	if (abort_merge || continue_merge) {
10911 		if (argc != 0)
10912 			usage_merge();
10913 	} else if (argc != 1)
10914 		usage_merge();
10915 
10916 	cwd = getcwd(NULL, 0);
10917 	if (cwd == NULL) {
10918 		error = got_error_from_errno("getcwd");
10919 		goto done;
10920 	}
10921 
10922 	error = got_worktree_open(&worktree, cwd);
10923 	if (error) {
10924 		if (error->code == GOT_ERR_NOT_WORKTREE)
10925 			error = wrap_not_worktree_error(error,
10926 			    "merge", cwd);
10927 		goto done;
10928 	}
10929 
10930 	error = got_repo_open(&repo,
10931 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL);
10932 	if (error != NULL)
10933 		goto done;
10934 
10935 	error = apply_unveil(got_repo_get_path(repo), 0,
10936 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10937 	if (error)
10938 		goto done;
10939 
10940 	error = check_rebase_or_histedit_in_progress(worktree);
10941 	if (error)
10942 		goto done;
10943 
10944 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10945 	    repo);
10946 	if (error)
10947 		goto done;
10948 
10949 	if (abort_merge) {
10950 		if (!merge_in_progress) {
10951 			error = got_error(GOT_ERR_NOT_MERGING);
10952 			goto done;
10953 		}
10954 		error = got_worktree_merge_continue(&branch_name,
10955 		    &branch_tip, &fileindex, worktree, repo);
10956 		if (error)
10957 			goto done;
10958 		error = got_worktree_merge_abort(worktree, fileindex, repo,
10959 		    abort_progress, &upa);
10960 		if (error)
10961 			goto done;
10962 		printf("Merge of %s aborted\n", branch_name);
10963 		goto done; /* nothing else to do */
10964 	}
10965 
10966 	error = get_author(&author, repo, worktree);
10967 	if (error)
10968 		goto done;
10969 
10970 	if (continue_merge) {
10971 		if (!merge_in_progress) {
10972 			error = got_error(GOT_ERR_NOT_MERGING);
10973 			goto done;
10974 		}
10975 		error = got_worktree_merge_continue(&branch_name,
10976 		    &branch_tip, &fileindex, worktree, repo);
10977 		if (error)
10978 			goto done;
10979 	} else {
10980 		error = got_ref_open(&branch, repo, argv[0], 0);
10981 		if (error != NULL)
10982 			goto done;
10983 		branch_name = strdup(got_ref_get_name(branch));
10984 		if (branch_name == NULL) {
10985 			error = got_error_from_errno("strdup");
10986 			goto done;
10987 		}
10988 		error = got_ref_resolve(&branch_tip, repo, branch);
10989 		if (error)
10990 			goto done;
10991 	}
10992 
10993 	error = got_ref_open(&wt_branch, repo,
10994 	    got_worktree_get_head_ref_name(worktree), 0);
10995 	if (error)
10996 		goto done;
10997 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
10998 	if (error)
10999 		goto done;
11000 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11001 	    wt_branch_tip, branch_tip, 0, repo,
11002 	    check_cancelled, NULL);
11003 	if (error && error->code != GOT_ERR_ANCESTRY)
11004 		goto done;
11005 
11006 	if (!continue_merge) {
11007 		error = check_path_prefix(wt_branch_tip, branch_tip,
11008 		    got_worktree_get_path_prefix(worktree),
11009 		    GOT_ERR_MERGE_PATH, repo);
11010 		if (error)
11011 			goto done;
11012 		if (yca_id) {
11013 			error = check_same_branch(wt_branch_tip, branch,
11014 			    yca_id, repo);
11015 			if (error) {
11016 				if (error->code != GOT_ERR_ANCESTRY)
11017 					goto done;
11018 				error = NULL;
11019 			} else {
11020 				static char msg[512];
11021 				snprintf(msg, sizeof(msg),
11022 				    "cannot create a merge commit because "
11023 				    "%s is based on %s; %s can be integrated "
11024 				    "with 'got integrate' instead", branch_name,
11025 				    got_worktree_get_head_ref_name(worktree),
11026 				    branch_name);
11027 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
11028 				goto done;
11029 			}
11030 		}
11031 		error = got_worktree_merge_prepare(&fileindex, worktree,
11032 		    branch, repo);
11033 		if (error)
11034 			goto done;
11035 
11036 		error = got_worktree_merge_branch(worktree, fileindex,
11037 		    yca_id, branch_tip, repo, update_progress, &upa,
11038 		    check_cancelled, NULL);
11039 		if (error)
11040 			goto done;
11041 		print_merge_progress_stats(&upa);
11042 		if (!upa.did_something) {
11043 			error = got_worktree_merge_abort(worktree, fileindex,
11044 			    repo, abort_progress, &upa);
11045 			if (error)
11046 				goto done;
11047 			printf("Already up-to-date\n");
11048 			goto done;
11049 		}
11050 	}
11051 
11052 	if (interrupt_merge) {
11053 		error = got_worktree_merge_postpone(worktree, fileindex);
11054 		if (error)
11055 			goto done;
11056 		printf("Merge of %s interrupted on request\n", branch_name);
11057 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
11058 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11059 		error = got_worktree_merge_postpone(worktree, fileindex);
11060 		if (error)
11061 			goto done;
11062 		if (upa.conflicts > 0 && upa.missing == 0 &&
11063 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11064 			error = got_error_msg(GOT_ERR_CONFLICTS,
11065 			    "conflicts must be resolved before merging "
11066 			    "can continue");
11067 		} else if (upa.conflicts > 0) {
11068 			error = got_error_msg(GOT_ERR_CONFLICTS,
11069 			    "conflicts must be resolved before merging "
11070 			    "can continue; changes destined for some "
11071 			    "files were not yet merged and "
11072 			    "should be merged manually if required before the "
11073 			    "merge operation is continued");
11074 		} else {
11075 			error = got_error_msg(GOT_ERR_CONFLICTS,
11076 			    "changes destined for some "
11077 			    "files were not yet merged and should be "
11078 			    "merged manually if required before the "
11079 			    "merge operation is continued");
11080 		}
11081 		goto done;
11082 	} else {
11083 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
11084 		    fileindex, author, NULL, 1, branch_tip, branch_name,
11085 		    repo, continue_merge ? print_status : NULL, NULL);
11086 		if (error)
11087 			goto done;
11088 		error = got_worktree_merge_complete(worktree, fileindex, repo);
11089 		if (error)
11090 			goto done;
11091 		error = got_object_id_str(&id_str, merge_commit_id);
11092 		if (error)
11093 			goto done;
11094 		printf("Merged %s into %s: %s\n", branch_name,
11095 		    got_worktree_get_head_ref_name(worktree),
11096 		    id_str);
11097 
11098 	}
11099 done:
11100 	free(id_str);
11101 	free(merge_commit_id);
11102 	free(author);
11103 	free(branch_tip);
11104 	free(branch_name);
11105 	free(yca_id);
11106 	if (branch)
11107 		got_ref_close(branch);
11108 	if (wt_branch)
11109 		got_ref_close(wt_branch);
11110 	if (worktree)
11111 		got_worktree_close(worktree);
11112 	if (repo) {
11113 		const struct got_error *close_err = got_repo_close(repo);
11114 		if (error == NULL)
11115 			error = close_err;
11116 	}
11117 	return error;
11118 }
11119 
11120 __dead static void
11121 usage_stage(void)
11122 {
11123 	fprintf(stderr, "usage: %s stage [-l] | [-p] [-F response-script] "
11124 	    "[-S] [file-path ...]\n",
11125 	    getprogname());
11126 	exit(1);
11127 }
11128 
11129 static const struct got_error *
11130 print_stage(void *arg, unsigned char status, unsigned char staged_status,
11131     const char *path, struct got_object_id *blob_id,
11132     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
11133     int dirfd, const char *de_name)
11134 {
11135 	const struct got_error *err = NULL;
11136 	char *id_str = NULL;
11137 
11138 	if (staged_status != GOT_STATUS_ADD &&
11139 	    staged_status != GOT_STATUS_MODIFY &&
11140 	    staged_status != GOT_STATUS_DELETE)
11141 		return NULL;
11142 
11143 	if (staged_status == GOT_STATUS_ADD ||
11144 	    staged_status == GOT_STATUS_MODIFY)
11145 		err = got_object_id_str(&id_str, staged_blob_id);
11146 	else
11147 		err = got_object_id_str(&id_str, blob_id);
11148 	if (err)
11149 		return err;
11150 
11151 	printf("%s %c %s\n", id_str, staged_status, path);
11152 	free(id_str);
11153 	return NULL;
11154 }
11155 
11156 static const struct got_error *
11157 cmd_stage(int argc, char *argv[])
11158 {
11159 	const struct got_error *error = NULL;
11160 	struct got_repository *repo = NULL;
11161 	struct got_worktree *worktree = NULL;
11162 	char *cwd = NULL;
11163 	struct got_pathlist_head paths;
11164 	struct got_pathlist_entry *pe;
11165 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
11166 	FILE *patch_script_file = NULL;
11167 	const char *patch_script_path = NULL;
11168 	struct choose_patch_arg cpa;
11169 
11170 	TAILQ_INIT(&paths);
11171 
11172 	while ((ch = getopt(argc, argv, "lpF:S")) != -1) {
11173 		switch (ch) {
11174 		case 'l':
11175 			list_stage = 1;
11176 			break;
11177 		case 'p':
11178 			pflag = 1;
11179 			break;
11180 		case 'F':
11181 			patch_script_path = optarg;
11182 			break;
11183 		case 'S':
11184 			allow_bad_symlinks = 1;
11185 			break;
11186 		default:
11187 			usage_stage();
11188 			/* NOTREACHED */
11189 		}
11190 	}
11191 
11192 	argc -= optind;
11193 	argv += optind;
11194 
11195 #ifndef PROFILE
11196 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11197 	    "unveil", NULL) == -1)
11198 		err(1, "pledge");
11199 #endif
11200 	if (list_stage && (pflag || patch_script_path))
11201 		errx(1, "-l option cannot be used with other options");
11202 	if (patch_script_path && !pflag)
11203 		errx(1, "-F option can only be used together with -p option");
11204 
11205 	cwd = getcwd(NULL, 0);
11206 	if (cwd == NULL) {
11207 		error = got_error_from_errno("getcwd");
11208 		goto done;
11209 	}
11210 
11211 	error = got_worktree_open(&worktree, cwd);
11212 	if (error) {
11213 		if (error->code == GOT_ERR_NOT_WORKTREE)
11214 			error = wrap_not_worktree_error(error, "stage", cwd);
11215 		goto done;
11216 	}
11217 
11218 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11219 	    NULL);
11220 	if (error != NULL)
11221 		goto done;
11222 
11223 	if (patch_script_path) {
11224 		patch_script_file = fopen(patch_script_path, "r");
11225 		if (patch_script_file == NULL) {
11226 			error = got_error_from_errno2("fopen",
11227 			    patch_script_path);
11228 			goto done;
11229 		}
11230 	}
11231 	error = apply_unveil(got_repo_get_path(repo), 0,
11232 	    got_worktree_get_root_path(worktree));
11233 	if (error)
11234 		goto done;
11235 
11236 	error = check_merge_in_progress(worktree, repo);
11237 	if (error)
11238 		goto done;
11239 
11240 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
11241 	if (error)
11242 		goto done;
11243 
11244 	if (list_stage)
11245 		error = got_worktree_status(worktree, &paths, repo, 0,
11246 		    print_stage, NULL, check_cancelled, NULL);
11247 	else {
11248 		cpa.patch_script_file = patch_script_file;
11249 		cpa.action = "stage";
11250 		error = got_worktree_stage(worktree, &paths,
11251 		    pflag ? NULL : print_status, NULL,
11252 		    pflag ? choose_patch : NULL, &cpa,
11253 		    allow_bad_symlinks, repo);
11254 	}
11255 done:
11256 	if (patch_script_file && fclose(patch_script_file) == EOF &&
11257 	    error == NULL)
11258 		error = got_error_from_errno2("fclose", patch_script_path);
11259 	if (repo) {
11260 		const struct got_error *close_err = got_repo_close(repo);
11261 		if (error == NULL)
11262 			error = close_err;
11263 	}
11264 	if (worktree)
11265 		got_worktree_close(worktree);
11266 	TAILQ_FOREACH(pe, &paths, entry)
11267 		free((char *)pe->path);
11268 	got_pathlist_free(&paths);
11269 	free(cwd);
11270 	return error;
11271 }
11272 
11273 __dead static void
11274 usage_unstage(void)
11275 {
11276 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
11277 	    "[file-path ...]\n",
11278 	    getprogname());
11279 	exit(1);
11280 }
11281 
11282 
11283 static const struct got_error *
11284 cmd_unstage(int argc, char *argv[])
11285 {
11286 	const struct got_error *error = NULL;
11287 	struct got_repository *repo = NULL;
11288 	struct got_worktree *worktree = NULL;
11289 	char *cwd = NULL;
11290 	struct got_pathlist_head paths;
11291 	struct got_pathlist_entry *pe;
11292 	int ch, pflag = 0;
11293 	struct got_update_progress_arg upa;
11294 	FILE *patch_script_file = NULL;
11295 	const char *patch_script_path = NULL;
11296 	struct choose_patch_arg cpa;
11297 
11298 	TAILQ_INIT(&paths);
11299 
11300 	while ((ch = getopt(argc, argv, "pF:")) != -1) {
11301 		switch (ch) {
11302 		case 'p':
11303 			pflag = 1;
11304 			break;
11305 		case 'F':
11306 			patch_script_path = optarg;
11307 			break;
11308 		default:
11309 			usage_unstage();
11310 			/* NOTREACHED */
11311 		}
11312 	}
11313 
11314 	argc -= optind;
11315 	argv += optind;
11316 
11317 #ifndef PROFILE
11318 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11319 	    "unveil", NULL) == -1)
11320 		err(1, "pledge");
11321 #endif
11322 	if (patch_script_path && !pflag)
11323 		errx(1, "-F option can only be used together with -p option");
11324 
11325 	cwd = getcwd(NULL, 0);
11326 	if (cwd == NULL) {
11327 		error = got_error_from_errno("getcwd");
11328 		goto done;
11329 	}
11330 
11331 	error = got_worktree_open(&worktree, cwd);
11332 	if (error) {
11333 		if (error->code == GOT_ERR_NOT_WORKTREE)
11334 			error = wrap_not_worktree_error(error, "unstage", cwd);
11335 		goto done;
11336 	}
11337 
11338 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11339 	    NULL);
11340 	if (error != NULL)
11341 		goto done;
11342 
11343 	if (patch_script_path) {
11344 		patch_script_file = fopen(patch_script_path, "r");
11345 		if (patch_script_file == NULL) {
11346 			error = got_error_from_errno2("fopen",
11347 			    patch_script_path);
11348 			goto done;
11349 		}
11350 	}
11351 
11352 	error = apply_unveil(got_repo_get_path(repo), 0,
11353 	    got_worktree_get_root_path(worktree));
11354 	if (error)
11355 		goto done;
11356 
11357 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
11358 	if (error)
11359 		goto done;
11360 
11361 	cpa.patch_script_file = patch_script_file;
11362 	cpa.action = "unstage";
11363 	memset(&upa, 0, sizeof(upa));
11364 	error = got_worktree_unstage(worktree, &paths, update_progress,
11365 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
11366 	if (!error)
11367 		print_merge_progress_stats(&upa);
11368 done:
11369 	if (patch_script_file && fclose(patch_script_file) == EOF &&
11370 	    error == NULL)
11371 		error = got_error_from_errno2("fclose", patch_script_path);
11372 	if (repo) {
11373 		const struct got_error *close_err = got_repo_close(repo);
11374 		if (error == NULL)
11375 			error = close_err;
11376 	}
11377 	if (worktree)
11378 		got_worktree_close(worktree);
11379 	TAILQ_FOREACH(pe, &paths, entry)
11380 		free((char *)pe->path);
11381 	got_pathlist_free(&paths);
11382 	free(cwd);
11383 	return error;
11384 }
11385 
11386 __dead static void
11387 usage_cat(void)
11388 {
11389 	fprintf(stderr, "usage: %s cat [-r repository ] [ -c commit ] [ -P ] "
11390 	    "arg1 [arg2 ...]\n", getprogname());
11391 	exit(1);
11392 }
11393 
11394 static const struct got_error *
11395 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11396 {
11397 	const struct got_error *err;
11398 	struct got_blob_object *blob;
11399 
11400 	err = got_object_open_as_blob(&blob, repo, id, 8192);
11401 	if (err)
11402 		return err;
11403 
11404 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
11405 	got_object_blob_close(blob);
11406 	return err;
11407 }
11408 
11409 static const struct got_error *
11410 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11411 {
11412 	const struct got_error *err;
11413 	struct got_tree_object *tree;
11414 	int nentries, i;
11415 
11416 	err = got_object_open_as_tree(&tree, repo, id);
11417 	if (err)
11418 		return err;
11419 
11420 	nentries = got_object_tree_get_nentries(tree);
11421 	for (i = 0; i < nentries; i++) {
11422 		struct got_tree_entry *te;
11423 		char *id_str;
11424 		if (sigint_received || sigpipe_received)
11425 			break;
11426 		te = got_object_tree_get_entry(tree, i);
11427 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
11428 		if (err)
11429 			break;
11430 		fprintf(outfile, "%s %.7o %s\n", id_str,
11431 		    got_tree_entry_get_mode(te),
11432 		    got_tree_entry_get_name(te));
11433 		free(id_str);
11434 	}
11435 
11436 	got_object_tree_close(tree);
11437 	return err;
11438 }
11439 
11440 static const struct got_error *
11441 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11442 {
11443 	const struct got_error *err;
11444 	struct got_commit_object *commit;
11445 	const struct got_object_id_queue *parent_ids;
11446 	struct got_object_qid *pid;
11447 	char *id_str = NULL;
11448 	const char *logmsg = NULL;
11449 
11450 	err = got_object_open_as_commit(&commit, repo, id);
11451 	if (err)
11452 		return err;
11453 
11454 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
11455 	if (err)
11456 		goto done;
11457 
11458 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
11459 	parent_ids = got_object_commit_get_parent_ids(commit);
11460 	fprintf(outfile, "numparents %d\n",
11461 	    got_object_commit_get_nparents(commit));
11462 	STAILQ_FOREACH(pid, parent_ids, entry) {
11463 		char *pid_str;
11464 		err = got_object_id_str(&pid_str, pid->id);
11465 		if (err)
11466 			goto done;
11467 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
11468 		free(pid_str);
11469 	}
11470 	fprintf(outfile, "%s%s %lld +0000\n", GOT_COMMIT_LABEL_AUTHOR,
11471 	    got_object_commit_get_author(commit),
11472 	    (long long)got_object_commit_get_author_time(commit));
11473 
11474 	fprintf(outfile, "%s%s %lld +0000\n", GOT_COMMIT_LABEL_COMMITTER,
11475 	    got_object_commit_get_author(commit),
11476 	    (long long)got_object_commit_get_committer_time(commit));
11477 
11478 	logmsg = got_object_commit_get_logmsg_raw(commit);
11479 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
11480 	fprintf(outfile, "%s", logmsg);
11481 done:
11482 	free(id_str);
11483 	got_object_commit_close(commit);
11484 	return err;
11485 }
11486 
11487 static const struct got_error *
11488 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11489 {
11490 	const struct got_error *err;
11491 	struct got_tag_object *tag;
11492 	char *id_str = NULL;
11493 	const char *tagmsg = NULL;
11494 
11495 	err = got_object_open_as_tag(&tag, repo, id);
11496 	if (err)
11497 		return err;
11498 
11499 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
11500 	if (err)
11501 		goto done;
11502 
11503 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
11504 
11505 	switch (got_object_tag_get_object_type(tag)) {
11506 	case GOT_OBJ_TYPE_BLOB:
11507 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11508 		    GOT_OBJ_LABEL_BLOB);
11509 		break;
11510 	case GOT_OBJ_TYPE_TREE:
11511 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11512 		    GOT_OBJ_LABEL_TREE);
11513 		break;
11514 	case GOT_OBJ_TYPE_COMMIT:
11515 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11516 		    GOT_OBJ_LABEL_COMMIT);
11517 		break;
11518 	case GOT_OBJ_TYPE_TAG:
11519 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11520 		    GOT_OBJ_LABEL_TAG);
11521 		break;
11522 	default:
11523 		break;
11524 	}
11525 
11526 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
11527 	    got_object_tag_get_name(tag));
11528 
11529 	fprintf(outfile, "%s%s %lld +0000\n", GOT_TAG_LABEL_TAGGER,
11530 	    got_object_tag_get_tagger(tag),
11531 	    (long long)got_object_tag_get_tagger_time(tag));
11532 
11533 	tagmsg = got_object_tag_get_message(tag);
11534 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
11535 	fprintf(outfile, "%s", tagmsg);
11536 done:
11537 	free(id_str);
11538 	got_object_tag_close(tag);
11539 	return err;
11540 }
11541 
11542 static const struct got_error *
11543 cmd_cat(int argc, char *argv[])
11544 {
11545 	const struct got_error *error;
11546 	struct got_repository *repo = NULL;
11547 	struct got_worktree *worktree = NULL;
11548 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
11549 	const char *commit_id_str = NULL;
11550 	struct got_object_id *id = NULL, *commit_id = NULL;
11551 	int ch, obj_type, i, force_path = 0;
11552 	struct got_reflist_head refs;
11553 
11554 	TAILQ_INIT(&refs);
11555 
11556 #ifndef PROFILE
11557 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
11558 	    NULL) == -1)
11559 		err(1, "pledge");
11560 #endif
11561 
11562 	while ((ch = getopt(argc, argv, "c:r:P")) != -1) {
11563 		switch (ch) {
11564 		case 'c':
11565 			commit_id_str = optarg;
11566 			break;
11567 		case 'r':
11568 			repo_path = realpath(optarg, NULL);
11569 			if (repo_path == NULL)
11570 				return got_error_from_errno2("realpath",
11571 				    optarg);
11572 			got_path_strip_trailing_slashes(repo_path);
11573 			break;
11574 		case 'P':
11575 			force_path = 1;
11576 			break;
11577 		default:
11578 			usage_cat();
11579 			/* NOTREACHED */
11580 		}
11581 	}
11582 
11583 	argc -= optind;
11584 	argv += optind;
11585 
11586 	cwd = getcwd(NULL, 0);
11587 	if (cwd == NULL) {
11588 		error = got_error_from_errno("getcwd");
11589 		goto done;
11590 	}
11591 	error = got_worktree_open(&worktree, cwd);
11592 	if (error && error->code != GOT_ERR_NOT_WORKTREE)
11593 		goto done;
11594 	if (worktree) {
11595 		if (repo_path == NULL) {
11596 			repo_path = strdup(
11597 			    got_worktree_get_repo_path(worktree));
11598 			if (repo_path == NULL) {
11599 				error = got_error_from_errno("strdup");
11600 				goto done;
11601 			}
11602 		}
11603 	}
11604 
11605 	if (repo_path == NULL) {
11606 		repo_path = getcwd(NULL, 0);
11607 		if (repo_path == NULL)
11608 			return got_error_from_errno("getcwd");
11609 	}
11610 
11611 	error = got_repo_open(&repo, repo_path, NULL);
11612 	free(repo_path);
11613 	if (error != NULL)
11614 		goto done;
11615 
11616 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
11617 	if (error)
11618 		goto done;
11619 
11620 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
11621 	if (error)
11622 		goto done;
11623 
11624 	if (commit_id_str == NULL)
11625 		commit_id_str = GOT_REF_HEAD;
11626 	error = got_repo_match_object_id(&commit_id, NULL,
11627 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
11628 	if (error)
11629 		goto done;
11630 
11631 	for (i = 0; i < argc; i++) {
11632 		if (force_path) {
11633 			error = got_object_id_by_path(&id, repo, commit_id,
11634 			    argv[i]);
11635 			if (error)
11636 				break;
11637 		} else {
11638 			error = got_repo_match_object_id(&id, &label, argv[i],
11639 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
11640 			    repo);
11641 			if (error) {
11642 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
11643 				    error->code != GOT_ERR_NOT_REF)
11644 					break;
11645 				error = got_object_id_by_path(&id, repo,
11646 				    commit_id, argv[i]);
11647 				if (error)
11648 					break;
11649 			}
11650 		}
11651 
11652 		error = got_object_get_type(&obj_type, repo, id);
11653 		if (error)
11654 			break;
11655 
11656 		switch (obj_type) {
11657 		case GOT_OBJ_TYPE_BLOB:
11658 			error = cat_blob(id, repo, stdout);
11659 			break;
11660 		case GOT_OBJ_TYPE_TREE:
11661 			error = cat_tree(id, repo, stdout);
11662 			break;
11663 		case GOT_OBJ_TYPE_COMMIT:
11664 			error = cat_commit(id, repo, stdout);
11665 			break;
11666 		case GOT_OBJ_TYPE_TAG:
11667 			error = cat_tag(id, repo, stdout);
11668 			break;
11669 		default:
11670 			error = got_error(GOT_ERR_OBJ_TYPE);
11671 			break;
11672 		}
11673 		if (error)
11674 			break;
11675 		free(label);
11676 		label = NULL;
11677 		free(id);
11678 		id = NULL;
11679 	}
11680 done:
11681 	free(label);
11682 	free(id);
11683 	free(commit_id);
11684 	if (worktree)
11685 		got_worktree_close(worktree);
11686 	if (repo) {
11687 		const struct got_error *close_err = got_repo_close(repo);
11688 		if (error == NULL)
11689 			error = close_err;
11690 	}
11691 	got_ref_list_free(&refs);
11692 	return error;
11693 }
11694 
11695 __dead static void
11696 usage_info(void)
11697 {
11698 	fprintf(stderr, "usage: %s info [path ...]\n",
11699 	    getprogname());
11700 	exit(1);
11701 }
11702 
11703 static const struct got_error *
11704 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
11705     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
11706     struct got_object_id *commit_id)
11707 {
11708 	const struct got_error *err = NULL;
11709 	char *id_str = NULL;
11710 	char datebuf[128];
11711 	struct tm mytm, *tm;
11712 	struct got_pathlist_head *paths = arg;
11713 	struct got_pathlist_entry *pe;
11714 
11715 	/*
11716 	 * Clear error indication from any of the path arguments which
11717 	 * would cause this file index entry to be displayed.
11718 	 */
11719 	TAILQ_FOREACH(pe, paths, entry) {
11720 		if (got_path_cmp(path, pe->path, strlen(path),
11721 		    pe->path_len) == 0 ||
11722 		    got_path_is_child(path, pe->path, pe->path_len))
11723 			pe->data = NULL; /* no error */
11724 	}
11725 
11726 	printf(GOT_COMMIT_SEP_STR);
11727 	if (S_ISLNK(mode))
11728 		printf("symlink: %s\n", path);
11729 	else if (S_ISREG(mode)) {
11730 		printf("file: %s\n", path);
11731 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
11732 	} else if (S_ISDIR(mode))
11733 		printf("directory: %s\n", path);
11734 	else
11735 		printf("something: %s\n", path);
11736 
11737 	tm = localtime_r(&mtime, &mytm);
11738 	if (tm == NULL)
11739 		return NULL;
11740 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
11741 		return got_error(GOT_ERR_NO_SPACE);
11742 	printf("timestamp: %s\n", datebuf);
11743 
11744 	if (blob_id) {
11745 		err = got_object_id_str(&id_str, blob_id);
11746 		if (err)
11747 			return err;
11748 		printf("based on blob: %s\n", id_str);
11749 		free(id_str);
11750 	}
11751 
11752 	if (staged_blob_id) {
11753 		err = got_object_id_str(&id_str, staged_blob_id);
11754 		if (err)
11755 			return err;
11756 		printf("based on staged blob: %s\n", id_str);
11757 		free(id_str);
11758 	}
11759 
11760 	if (commit_id) {
11761 		err = got_object_id_str(&id_str, commit_id);
11762 		if (err)
11763 			return err;
11764 		printf("based on commit: %s\n", id_str);
11765 		free(id_str);
11766 	}
11767 
11768 	return NULL;
11769 }
11770 
11771 static const struct got_error *
11772 cmd_info(int argc, char *argv[])
11773 {
11774 	const struct got_error *error = NULL;
11775 	struct got_worktree *worktree = NULL;
11776 	char *cwd = NULL, *id_str = NULL;
11777 	struct got_pathlist_head paths;
11778 	struct got_pathlist_entry *pe;
11779 	char *uuidstr = NULL;
11780 	int ch, show_files = 0;
11781 
11782 	TAILQ_INIT(&paths);
11783 
11784 	while ((ch = getopt(argc, argv, "")) != -1) {
11785 		switch (ch) {
11786 		default:
11787 			usage_info();
11788 			/* NOTREACHED */
11789 		}
11790 	}
11791 
11792 	argc -= optind;
11793 	argv += optind;
11794 
11795 #ifndef PROFILE
11796 	if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
11797 	    NULL) == -1)
11798 		err(1, "pledge");
11799 #endif
11800 	cwd = getcwd(NULL, 0);
11801 	if (cwd == NULL) {
11802 		error = got_error_from_errno("getcwd");
11803 		goto done;
11804 	}
11805 
11806 	error = got_worktree_open(&worktree, cwd);
11807 	if (error) {
11808 		if (error->code == GOT_ERR_NOT_WORKTREE)
11809 			error = wrap_not_worktree_error(error, "info", cwd);
11810 		goto done;
11811 	}
11812 
11813 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
11814 	if (error)
11815 		goto done;
11816 
11817 	if (argc >= 1) {
11818 		error = get_worktree_paths_from_argv(&paths, argc, argv,
11819 		    worktree);
11820 		if (error)
11821 			goto done;
11822 		show_files = 1;
11823 	}
11824 
11825 	error = got_object_id_str(&id_str,
11826 	    got_worktree_get_base_commit_id(worktree));
11827 	if (error)
11828 		goto done;
11829 
11830 	error = got_worktree_get_uuid(&uuidstr, worktree);
11831 	if (error)
11832 		goto done;
11833 
11834 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
11835 	printf("work tree base commit: %s\n", id_str);
11836 	printf("work tree path prefix: %s\n",
11837 	    got_worktree_get_path_prefix(worktree));
11838 	printf("work tree branch reference: %s\n",
11839 	    got_worktree_get_head_ref_name(worktree));
11840 	printf("work tree UUID: %s\n", uuidstr);
11841 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
11842 
11843 	if (show_files) {
11844 		struct got_pathlist_entry *pe;
11845 		TAILQ_FOREACH(pe, &paths, entry) {
11846 			if (pe->path_len == 0)
11847 				continue;
11848 			/*
11849 			 * Assume this path will fail. This will be corrected
11850 			 * in print_path_info() in case the path does suceeed.
11851 			 */
11852 			pe->data = (void *)got_error_path(pe->path,
11853 			    GOT_ERR_BAD_PATH);
11854 		}
11855 		error = got_worktree_path_info(worktree, &paths,
11856 		    print_path_info, &paths, check_cancelled, NULL);
11857 		if (error)
11858 			goto done;
11859 		TAILQ_FOREACH(pe, &paths, entry) {
11860 			if (pe->data != NULL) {
11861 				error = pe->data; /* bad path */
11862 				break;
11863 			}
11864 		}
11865 	}
11866 done:
11867 	TAILQ_FOREACH(pe, &paths, entry)
11868 		free((char *)pe->path);
11869 	got_pathlist_free(&paths);
11870 	free(cwd);
11871 	free(id_str);
11872 	free(uuidstr);
11873 	return error;
11874 }