1 /*
2  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <sys/types.h>
18 #include <sys/queue.h>
19 #include <sys/tree.h>
20 #include <sys/uio.h>
21 #include <sys/socket.h>
22 #include <sys/stat.h>
23 #include <sys/mman.h>
24 #include <sys/resource.h>
25 
26 #include <ctype.h>
27 #include <endian.h>
28 #include <fcntl.h>
29 #include <fnmatch.h>
30 #include <limits.h>
31 #include <dirent.h>
32 #include <stdlib.h>
33 #include <stdio.h>
34 #include <sha1.h>
35 #include <string.h>
36 #include <time.h>
37 #include <unistd.h>
38 #include <zlib.h>
39 #include <errno.h>
40 #include <libgen.h>
41 #include <stdint.h>
42 #include <imsg.h>
43 #include <uuid.h>
44 
45 #include "bloom.h"
46 
47 #include "got_error.h"
48 #include "got_reference.h"
49 #include "got_repository.h"
50 #include "got_path.h"
51 #include "got_cancel.h"
52 #include "got_object.h"
53 
54 #include "got_lib_delta.h"
55 #include "got_lib_inflate.h"
56 #include "got_lib_object.h"
57 #include "got_lib_object_parse.h"
58 #include "got_lib_object_create.h"
59 #include "got_lib_pack.h"
60 #include "got_lib_privsep.h"
61 #include "got_lib_sha1.h"
62 #include "got_lib_object_cache.h"
63 #include "got_lib_repository.h"
64 #include "got_lib_gotconfig.h"
65 
66 #ifndef nitems
67 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
68 #endif
69 
70 RB_PROTOTYPE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
71     got_packidx_bloom_filter_cmp);
72 
73 const char *
74 got_repo_get_path(struct got_repository *repo)
75 {
76 	return repo->path;
77 }
78 
79 const char *
80 got_repo_get_path_git_dir(struct got_repository *repo)
81 {
82 	return repo->path_git_dir;
83 }
84 
85 int
86 got_repo_get_fd(struct got_repository *repo)
87 {
88 	return repo->gitdir_fd;
89 }
90 
91 const char *
92 got_repo_get_gitconfig_author_name(struct got_repository *repo)
93 {
94 	return repo->gitconfig_author_name;
95 }
96 
97 const char *
98 got_repo_get_gitconfig_author_email(struct got_repository *repo)
99 {
100 	return repo->gitconfig_author_email;
101 }
102 
103 const char *
104 got_repo_get_global_gitconfig_author_name(struct got_repository *repo)
105 {
106 	return repo->global_gitconfig_author_name;
107 }
108 
109 const char *
110 got_repo_get_global_gitconfig_author_email(struct got_repository *repo)
111 {
112 	return repo->global_gitconfig_author_email;
113 }
114 
115 const char *
116 got_repo_get_gitconfig_owner(struct got_repository *repo)
117 {
118 	return repo->gitconfig_owner;
119 }
120 
121 void
122 got_repo_get_gitconfig_extensions(char ***extensions, int *nextensions,
123     struct got_repository *repo)
124 {
125 	*extensions = repo->extensions;
126 	*nextensions = repo->nextensions;
127 }
128 
129 int
130 got_repo_is_bare(struct got_repository *repo)
131 {
132 	return (strcmp(repo->path, repo->path_git_dir) == 0);
133 }
134 
135 static char *
136 get_path_git_child(struct got_repository *repo, const char *basename)
137 {
138 	char *path_child;
139 
140 	if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
141 	    basename) == -1)
142 		return NULL;
143 
144 	return path_child;
145 }
146 
147 char *
148 got_repo_get_path_objects(struct got_repository *repo)
149 {
150 	return get_path_git_child(repo, GOT_OBJECTS_DIR);
151 }
152 
153 char *
154 got_repo_get_path_objects_pack(struct got_repository *repo)
155 {
156 	return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);
157 }
158 
159 char *
160 got_repo_get_path_refs(struct got_repository *repo)
161 {
162 	return get_path_git_child(repo, GOT_REFS_DIR);
163 }
164 
165 char *
166 got_repo_get_path_packed_refs(struct got_repository *repo)
167 {
168 	return get_path_git_child(repo, GOT_PACKED_REFS_FILE);
169 }
170 
171 static char *
172 get_path_head(struct got_repository *repo)
173 {
174 	return get_path_git_child(repo, GOT_HEAD_FILE);
175 }
176 
177 char *
178 got_repo_get_path_gitconfig(struct got_repository *repo)
179 {
180 	return get_path_git_child(repo, GOT_GITCONFIG);
181 }
182 
183 char *
184 got_repo_get_path_gotconfig(struct got_repository *repo)
185 {
186 	return get_path_git_child(repo, GOT_GOTCONFIG_FILENAME);
187 }
188 
189 const struct got_gotconfig *
190 got_repo_get_gotconfig(struct got_repository *repo)
191 {
192 	return repo->gotconfig;
193 }
194 
195 void
196 got_repo_get_gitconfig_remotes(int *nremotes,
197     const struct got_remote_repo **remotes, struct got_repository *repo)
198 {
199 	*nremotes = repo->ngitconfig_remotes;
200 	*remotes = repo->gitconfig_remotes;
201 }
202 
203 static int
204 is_git_repo(struct got_repository *repo)
205 {
206 	const char *path_git = got_repo_get_path_git_dir(repo);
207 	char *path_objects = got_repo_get_path_objects(repo);
208 	char *path_refs = got_repo_get_path_refs(repo);
209 	char *path_head = get_path_head(repo);
210 	int ret = 0;
211 	struct stat sb;
212 	struct got_reference *head_ref;
213 
214 	if (lstat(path_git, &sb) == -1)
215 		goto done;
216 	if (!S_ISDIR(sb.st_mode))
217 		goto done;
218 
219 	if (lstat(path_objects, &sb) == -1)
220 		goto done;
221 	if (!S_ISDIR(sb.st_mode))
222 		goto done;
223 
224 	if (lstat(path_refs, &sb) == -1)
225 		goto done;
226 	if (!S_ISDIR(sb.st_mode))
227 		goto done;
228 
229 	if (lstat(path_head, &sb) == -1)
230 		goto done;
231 	if (!S_ISREG(sb.st_mode))
232 		goto done;
233 
234 	/* Check if the HEAD reference can be opened. */
235 	if (got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0) != NULL)
236 		goto done;
237 	got_ref_close(head_ref);
238 
239 	ret = 1;
240 done:
241 	free(path_objects);
242 	free(path_refs);
243 	free(path_head);
244 	return ret;
245 
246 }
247 
248 const struct got_error *
249 got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
250     struct got_object *obj)
251 {
252 #ifndef GOT_NO_OBJ_CACHE
253 	const struct got_error *err = NULL;
254 	err = got_object_cache_add(&repo->objcache, id, obj);
255 	if (err) {
256 		if (err->code == GOT_ERR_OBJ_EXISTS ||
257 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
258 			err = NULL;
259 		return err;
260 	}
261 	obj->refcnt++;
262 #endif
263 	return NULL;
264 }
265 
266 struct got_object *
267 got_repo_get_cached_object(struct got_repository *repo,
268     struct got_object_id *id)
269 {
270 	return (struct got_object *)got_object_cache_get(&repo->objcache, id);
271 }
272 
273 const struct got_error *
274 got_repo_cache_tree(struct got_repository *repo, struct got_object_id *id,
275     struct got_tree_object *tree)
276 {
277 #ifndef GOT_NO_OBJ_CACHE
278 	const struct got_error *err = NULL;
279 	err = got_object_cache_add(&repo->treecache, id, tree);
280 	if (err) {
281 		if (err->code == GOT_ERR_OBJ_EXISTS ||
282 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
283 			err = NULL;
284 		return err;
285 	}
286 	tree->refcnt++;
287 #endif
288 	return NULL;
289 }
290 
291 struct got_tree_object *
292 got_repo_get_cached_tree(struct got_repository *repo,
293     struct got_object_id *id)
294 {
295 	return (struct got_tree_object *)got_object_cache_get(
296 	    &repo->treecache, id);
297 }
298 
299 const struct got_error *
300 got_repo_cache_commit(struct got_repository *repo, struct got_object_id *id,
301     struct got_commit_object *commit)
302 {
303 #ifndef GOT_NO_OBJ_CACHE
304 	const struct got_error *err = NULL;
305 	err = got_object_cache_add(&repo->commitcache, id, commit);
306 	if (err) {
307 		if (err->code == GOT_ERR_OBJ_EXISTS ||
308 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
309 			err = NULL;
310 		return err;
311 	}
312 	commit->refcnt++;
313 #endif
314 	return NULL;
315 }
316 
317 struct got_commit_object *
318 got_repo_get_cached_commit(struct got_repository *repo,
319     struct got_object_id *id)
320 {
321 	return (struct got_commit_object *)got_object_cache_get(
322 	    &repo->commitcache, id);
323 }
324 
325 const struct got_error *
326 got_repo_cache_tag(struct got_repository *repo, struct got_object_id *id,
327     struct got_tag_object *tag)
328 {
329 #ifndef GOT_NO_OBJ_CACHE
330 	const struct got_error *err = NULL;
331 	err = got_object_cache_add(&repo->tagcache, id, tag);
332 	if (err) {
333 		if (err->code == GOT_ERR_OBJ_EXISTS ||
334 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
335 			err = NULL;
336 		return err;
337 	}
338 	tag->refcnt++;
339 #endif
340 	return NULL;
341 }
342 
343 struct got_tag_object *
344 got_repo_get_cached_tag(struct got_repository *repo, struct got_object_id *id)
345 {
346 	return (struct got_tag_object *)got_object_cache_get(
347 	    &repo->tagcache, id);
348 }
349 
350 const struct got_error *
351 got_repo_cache_raw_object(struct got_repository *repo, struct got_object_id *id,
352     struct got_raw_object *raw)
353 {
354 #ifndef GOT_NO_OBJ_CACHE
355 	const struct got_error *err = NULL;
356 	err = got_object_cache_add(&repo->rawcache, id, raw);
357 	if (err) {
358 		if (err->code == GOT_ERR_OBJ_EXISTS ||
359 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
360 			err = NULL;
361 		return err;
362 	}
363 	raw->refcnt++;
364 #endif
365 	return NULL;
366 }
367 
368 
369 struct got_raw_object *
370 got_repo_get_cached_raw_object(struct got_repository *repo,
371     struct got_object_id *id)
372 {
373 	return (struct got_raw_object *)got_object_cache_get(&repo->rawcache, id);
374 }
375 
376 
377 static const struct got_error *
378 open_repo(struct got_repository *repo, const char *path)
379 {
380 	const struct got_error *err = NULL;
381 
382 	repo->gitdir_fd = -1;
383 
384 	/* bare git repository? */
385 	repo->path_git_dir = strdup(path);
386 	if (repo->path_git_dir == NULL)
387 		return got_error_from_errno("strdup");
388 	if (is_git_repo(repo)) {
389 		repo->path = strdup(repo->path_git_dir);
390 		if (repo->path == NULL) {
391 			err = got_error_from_errno("strdup");
392 			goto done;
393 		}
394 		repo->gitdir_fd = open(repo->path_git_dir,
395 		    O_DIRECTORY | O_CLOEXEC);
396 		if (repo->gitdir_fd == -1) {
397 			err = got_error_from_errno2("open",
398 			    repo->path_git_dir);
399 			goto done;
400 		}
401 		return NULL;
402 	}
403 
404 	/* git repository with working tree? */
405 	free(repo->path_git_dir);
406 	repo->path_git_dir = NULL;
407 	if (asprintf(&repo->path_git_dir, "%s/%s", path, GOT_GIT_DIR) == -1) {
408 		err = got_error_from_errno("asprintf");
409 		goto done;
410 	}
411 	if (is_git_repo(repo)) {
412 		repo->path = strdup(path);
413 		if (repo->path == NULL) {
414 			err = got_error_from_errno("strdup");
415 			goto done;
416 		}
417 		repo->gitdir_fd = open(repo->path_git_dir,
418 		    O_DIRECTORY | O_CLOEXEC);
419 		if (repo->gitdir_fd == -1) {
420 			err = got_error_from_errno2("open",
421 			    repo->path_git_dir);
422 			goto done;
423 		}
424 		return NULL;
425 	}
426 
427 	err = got_error(GOT_ERR_NOT_GIT_REPO);
428 done:
429 	if (err) {
430 		free(repo->path);
431 		repo->path = NULL;
432 		free(repo->path_git_dir);
433 		repo->path_git_dir = NULL;
434 		if (repo->gitdir_fd != -1)
435 			close(repo->gitdir_fd);
436 		repo->gitdir_fd = -1;
437 
438 	}
439 	return err;
440 }
441 
442 static const struct got_error *
443 parse_gitconfig_file(int *gitconfig_repository_format_version,
444     char **gitconfig_author_name, char **gitconfig_author_email,
445     struct got_remote_repo **remotes, int *nremotes,
446     char **gitconfig_owner, char ***extensions, int *nextensions,
447     const char *gitconfig_path)
448 {
449 	const struct got_error *err = NULL, *child_err = NULL;
450 	int fd = -1;
451 	int imsg_fds[2] = { -1, -1 };
452 	pid_t pid;
453 	struct imsgbuf *ibuf;
454 
455 	*gitconfig_repository_format_version = 0;
456 	if (extensions)
457 		*extensions = NULL;
458 	if (nextensions)
459 		*nextensions = 0;
460 	*gitconfig_author_name = NULL;
461 	*gitconfig_author_email = NULL;
462 	if (remotes)
463 		*remotes = NULL;
464 	if (nremotes)
465 		*nremotes = 0;
466 	if (gitconfig_owner)
467 		*gitconfig_owner = NULL;
468 
469 	fd = open(gitconfig_path, O_RDONLY | O_CLOEXEC);
470 	if (fd == -1) {
471 		if (errno == ENOENT)
472 			return NULL;
473 		return got_error_from_errno2("open", gitconfig_path);
474 	}
475 
476 	ibuf = calloc(1, sizeof(*ibuf));
477 	if (ibuf == NULL) {
478 		err = got_error_from_errno("calloc");
479 		goto done;
480 	}
481 
482 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
483 		err = got_error_from_errno("socketpair");
484 		goto done;
485 	}
486 
487 	pid = fork();
488 	if (pid == -1) {
489 		err = got_error_from_errno("fork");
490 		goto done;
491 	} else if (pid == 0) {
492 		got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_GITCONFIG,
493 		    gitconfig_path);
494 		/* not reached */
495 	}
496 
497 	if (close(imsg_fds[1]) == -1) {
498 		err = got_error_from_errno("close");
499 		goto done;
500 	}
501 	imsg_fds[1] = -1;
502 	imsg_init(ibuf, imsg_fds[0]);
503 
504 	err = got_privsep_send_gitconfig_parse_req(ibuf, fd);
505 	if (err)
506 		goto done;
507 	fd = -1;
508 
509 	err = got_privsep_send_gitconfig_repository_format_version_req(ibuf);
510 	if (err)
511 		goto done;
512 
513 	err = got_privsep_recv_gitconfig_int(
514 	    gitconfig_repository_format_version, ibuf);
515 	if (err)
516 		goto done;
517 
518 	if (extensions && nextensions) {
519 		err = got_privsep_send_gitconfig_repository_extensions_req(
520 		    ibuf);
521 		if (err)
522 			goto done;
523 		err = got_privsep_recv_gitconfig_int(nextensions, ibuf);
524 		if (err)
525 			goto done;
526 		if (*nextensions > 0) {
527 			int i;
528 			*extensions = calloc(*nextensions, sizeof(char *));
529 			if (*extensions == NULL) {
530 				err = got_error_from_errno("calloc");
531 				goto done;
532 			}
533 			for (i = 0; i < *nextensions; i++) {
534 				char *ext;
535 				err = got_privsep_recv_gitconfig_str(&ext,
536 				    ibuf);
537 				if (err)
538 					goto done;
539 				(*extensions)[i] = ext;
540 			}
541 		}
542 	}
543 
544 	err = got_privsep_send_gitconfig_author_name_req(ibuf);
545 	if (err)
546 		goto done;
547 
548 	err = got_privsep_recv_gitconfig_str(gitconfig_author_name, ibuf);
549 	if (err)
550 		goto done;
551 
552 	err = got_privsep_send_gitconfig_author_email_req(ibuf);
553 	if (err)
554 		goto done;
555 
556 	err = got_privsep_recv_gitconfig_str(gitconfig_author_email, ibuf);
557 	if (err)
558 		goto done;
559 
560 	if (remotes && nremotes) {
561 		err = got_privsep_send_gitconfig_remotes_req(ibuf);
562 		if (err)
563 			goto done;
564 
565 		err = got_privsep_recv_gitconfig_remotes(remotes,
566 		    nremotes, ibuf);
567 		if (err)
568 			goto done;
569 	}
570 
571 	if (gitconfig_owner) {
572 		err = got_privsep_send_gitconfig_owner_req(ibuf);
573 		if (err)
574 			goto done;
575 		err = got_privsep_recv_gitconfig_str(gitconfig_owner, ibuf);
576 		if (err)
577 			goto done;
578 	}
579 
580 	err = got_privsep_send_stop(imsg_fds[0]);
581 	child_err = got_privsep_wait_for_child(pid);
582 	if (child_err && err == NULL)
583 		err = child_err;
584 done:
585 	if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL)
586 		err = got_error_from_errno("close");
587 	if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL)
588 		err = got_error_from_errno("close");
589 	if (fd != -1 && close(fd) == -1 && err == NULL)
590 		err = got_error_from_errno2("close", gitconfig_path);
591 	free(ibuf);
592 	return err;
593 }
594 
595 static const struct got_error *
596 read_gitconfig(struct got_repository *repo, const char *global_gitconfig_path)
597 {
598 	const struct got_error *err = NULL;
599 	char *repo_gitconfig_path = NULL;
600 
601 	if (global_gitconfig_path) {
602 		/* Read settings from ~/.gitconfig. */
603 		int dummy_repo_version;
604 		err = parse_gitconfig_file(&dummy_repo_version,
605 		    &repo->global_gitconfig_author_name,
606 		    &repo->global_gitconfig_author_email,
607 		    NULL, NULL, NULL, NULL, NULL, global_gitconfig_path);
608 		if (err)
609 			return err;
610 	}
611 
612 	/* Read repository's .git/config file. */
613 	repo_gitconfig_path = got_repo_get_path_gitconfig(repo);
614 	if (repo_gitconfig_path == NULL)
615 		return got_error_from_errno("got_repo_get_path_gitconfig");
616 
617 	err = parse_gitconfig_file(&repo->gitconfig_repository_format_version,
618 	    &repo->gitconfig_author_name, &repo->gitconfig_author_email,
619 	    &repo->gitconfig_remotes, &repo->ngitconfig_remotes,
620 	    &repo->gitconfig_owner, &repo->extensions, &repo->nextensions,
621 	    repo_gitconfig_path);
622 	if (err)
623 		goto done;
624 done:
625 	free(repo_gitconfig_path);
626 	return err;
627 }
628 
629 static const struct got_error *
630 read_gotconfig(struct got_repository *repo)
631 {
632 	const struct got_error *err = NULL;
633 	char *gotconfig_path;
634 
635 	gotconfig_path = got_repo_get_path_gotconfig(repo);
636 	if (gotconfig_path == NULL)
637 		return got_error_from_errno("got_repo_get_path_gotconfig");
638 
639 	err = got_gotconfig_read(&repo->gotconfig, gotconfig_path);
640 	free(gotconfig_path);
641 	return err;
642 }
643 
644 /* Supported repository format extensions. */
645 static const char *repo_extensions[] = {
646 	"noop",			/* Got supports repository format version 1. */
647 	"preciousObjects",	/* Supported by gotadmin cleanup. */
648 	"worktreeConfig",	/* Got does not care about Git work trees. */
649 };
650 
651 const struct got_error *
652 got_repo_open(struct got_repository **repop, const char *path,
653     const char *global_gitconfig_path)
654 {
655 	struct got_repository *repo = NULL;
656 	const struct got_error *err = NULL;
657 	char *repo_path = NULL;
658 	size_t i;
659 	struct rlimit rl;
660 
661 	*repop = NULL;
662 
663 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
664 		return got_error_from_errno("getrlimit");
665 
666 	repo = calloc(1, sizeof(*repo));
667 	if (repo == NULL) {
668 		err = got_error_from_errno("calloc");
669 		goto done;
670 	}
671 
672 	RB_INIT(&repo->packidx_bloom_filters);
673 	TAILQ_INIT(&repo->packidx_paths);
674 
675 	for (i = 0; i < nitems(repo->privsep_children); i++) {
676 		memset(&repo->privsep_children[i], 0,
677 		    sizeof(repo->privsep_children[0]));
678 		repo->privsep_children[i].imsg_fd = -1;
679 	}
680 
681 	err = got_object_cache_init(&repo->objcache,
682 	    GOT_OBJECT_CACHE_TYPE_OBJ);
683 	if (err)
684 		goto done;
685 	err = got_object_cache_init(&repo->treecache,
686 	    GOT_OBJECT_CACHE_TYPE_TREE);
687 	if (err)
688 		goto done;
689 	err = got_object_cache_init(&repo->commitcache,
690 	    GOT_OBJECT_CACHE_TYPE_COMMIT);
691 	if (err)
692 		goto done;
693 	err = got_object_cache_init(&repo->tagcache,
694 	    GOT_OBJECT_CACHE_TYPE_TAG);
695 	if (err)
696 		goto done;
697 	err = got_object_cache_init(&repo->rawcache,
698 	    GOT_OBJECT_CACHE_TYPE_RAW);
699 	if (err)
700 		goto done;
701 
702 	repo->pack_cache_size = GOT_PACK_CACHE_SIZE;
703 	if (repo->pack_cache_size > rl.rlim_cur / 8)
704 		repo->pack_cache_size = rl.rlim_cur / 8;
705 
706 	repo_path = realpath(path, NULL);
707 	if (repo_path == NULL) {
708 		err = got_error_from_errno2("realpath", path);
709 		goto done;
710 	}
711 
712 	for (;;) {
713 		char *parent_path;
714 
715 		err = open_repo(repo, repo_path);
716 		if (err == NULL)
717 			break;
718 		if (err->code != GOT_ERR_NOT_GIT_REPO)
719 			goto done;
720 		if (repo_path[0] == '/' && repo_path[1] == '\0') {
721 			err = got_error(GOT_ERR_NOT_GIT_REPO);
722 			goto done;
723 		}
724 		err = got_path_dirname(&parent_path, repo_path);
725 		if (err)
726 			goto done;
727 		free(repo_path);
728 		repo_path = parent_path;
729 	}
730 
731 	err = read_gotconfig(repo);
732 	if (err)
733 		goto done;
734 
735 	err = read_gitconfig(repo, global_gitconfig_path);
736 	if (err)
737 		goto done;
738 	if (repo->gitconfig_repository_format_version != 0)
739 		err = got_error_path(path, GOT_ERR_GIT_REPO_FORMAT);
740 	for (i = 0; i < repo->nextensions; i++) {
741 		char *ext = repo->extensions[i];
742 		int j, supported = 0;
743 		for (j = 0; j < nitems(repo_extensions); j++) {
744 			if (strcmp(ext, repo_extensions[j]) == 0) {
745 				supported = 1;
746 				break;
747 			}
748 		}
749 		if (!supported) {
750 			err = got_error_path(ext, GOT_ERR_GIT_REPO_EXT);
751 			goto done;
752 		}
753 	}
754 
755 	err = got_repo_list_packidx(&repo->packidx_paths, repo);
756 done:
757 	if (err)
758 		got_repo_close(repo);
759 	else
760 		*repop = repo;
761 	free(repo_path);
762 	return err;
763 }
764 
765 const struct got_error *
766 got_repo_close(struct got_repository *repo)
767 {
768 	const struct got_error *err = NULL, *child_err;
769 	struct got_packidx_bloom_filter *bf;
770 	struct got_pathlist_entry *pe;
771 	size_t i;
772 
773 	for (i = 0; i < repo->pack_cache_size; i++) {
774 		if (repo->packidx_cache[i] == NULL)
775 			break;
776 		got_packidx_close(repo->packidx_cache[i]);
777 	}
778 
779 	while ((bf = RB_MIN(got_packidx_bloom_filter_tree,
780 	    &repo->packidx_bloom_filters))) {
781 		RB_REMOVE(got_packidx_bloom_filter_tree,
782 		    &repo->packidx_bloom_filters, bf);
783 		free(bf->bloom);
784 		free(bf);
785 	}
786 
787 	for (i = 0; i < repo->pack_cache_size; i++) {
788 		if (repo->packs[i].path_packfile == NULL)
789 			break;
790 		got_pack_close(&repo->packs[i]);
791 	}
792 
793 	free(repo->path);
794 	free(repo->path_git_dir);
795 
796 	got_object_cache_close(&repo->objcache);
797 	got_object_cache_close(&repo->treecache);
798 	got_object_cache_close(&repo->commitcache);
799 	got_object_cache_close(&repo->tagcache);
800 	got_object_cache_close(&repo->rawcache);
801 
802 	for (i = 0; i < nitems(repo->privsep_children); i++) {
803 		if (repo->privsep_children[i].imsg_fd == -1)
804 			continue;
805 		imsg_clear(repo->privsep_children[i].ibuf);
806 		free(repo->privsep_children[i].ibuf);
807 		err = got_privsep_send_stop(repo->privsep_children[i].imsg_fd);
808 		child_err = got_privsep_wait_for_child(
809 		    repo->privsep_children[i].pid);
810 		if (child_err && err == NULL)
811 			err = child_err;
812 		if (close(repo->privsep_children[i].imsg_fd) == -1 &&
813 		    err == NULL)
814 			err = got_error_from_errno("close");
815 	}
816 
817 	if (repo->gitdir_fd != -1 && close(repo->gitdir_fd) == -1 &&
818 	    err == NULL)
819 		err = got_error_from_errno("close");
820 
821 	if (repo->gotconfig)
822 		got_gotconfig_free(repo->gotconfig);
823 	free(repo->gitconfig_author_name);
824 	free(repo->gitconfig_author_email);
825 	for (i = 0; i < repo->ngitconfig_remotes; i++)
826 		got_repo_free_remote_repo_data(&repo->gitconfig_remotes[i]);
827 	free(repo->gitconfig_remotes);
828 	for (i = 0; i < repo->nextensions; i++)
829 		free(repo->extensions[i]);
830 	free(repo->extensions);
831 
832 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry)
833 		free((void *)pe->path);
834 	got_pathlist_free(&repo->packidx_paths);
835 	free(repo);
836 
837 	return err;
838 }
839 
840 void
841 got_repo_free_remote_repo_data(struct got_remote_repo *repo)
842 {
843 	int i;
844 
845 	free(repo->name);
846 	repo->name = NULL;
847 	free(repo->fetch_url);
848 	repo->fetch_url = NULL;
849 	free(repo->send_url);
850 	repo->send_url = NULL;
851 	for (i = 0; i < repo->nfetch_branches; i++)
852 		free(repo->fetch_branches[i]);
853 	free(repo->fetch_branches);
854 	repo->fetch_branches = NULL;
855 	repo->nfetch_branches = 0;
856 	for (i = 0; i < repo->nsend_branches; i++)
857 		free(repo->send_branches[i]);
858 	free(repo->send_branches);
859 	repo->send_branches = NULL;
860 	repo->nsend_branches = 0;
861 }
862 
863 const struct got_error *
864 got_repo_map_path(char **in_repo_path, struct got_repository *repo,
865     const char *input_path)
866 {
867 	const struct got_error *err = NULL;
868 	const char *repo_abspath = NULL;
869 	size_t repolen, len;
870 	char *canonpath, *path = NULL;
871 
872 	*in_repo_path = NULL;
873 
874 	canonpath = strdup(input_path);
875 	if (canonpath == NULL) {
876 		err = got_error_from_errno("strdup");
877 		goto done;
878 	}
879 	err = got_canonpath(input_path, canonpath, strlen(canonpath) + 1);
880 	if (err)
881 		goto done;
882 
883 	repo_abspath = got_repo_get_path(repo);
884 
885 	if (canonpath[0] == '\0') {
886 		path = strdup(canonpath);
887 		if (path == NULL) {
888 			err = got_error_from_errno("strdup");
889 			goto done;
890 		}
891 	} else {
892 		path = realpath(canonpath, NULL);
893 		if (path == NULL) {
894 			if (errno != ENOENT) {
895 				err = got_error_from_errno2("realpath",
896 				    canonpath);
897 				goto done;
898 			}
899 			/*
900 			 * Path is not on disk.
901 			 * Assume it is already relative to repository root.
902 			 */
903 			path = strdup(canonpath);
904 			if (path == NULL) {
905 				err = got_error_from_errno("strdup");
906 				goto done;
907 			}
908 		}
909 
910 		repolen = strlen(repo_abspath);
911 		len = strlen(path);
912 
913 
914 		if (strcmp(path, repo_abspath) == 0) {
915 			free(path);
916 			path = strdup("");
917 			if (path == NULL) {
918 				err = got_error_from_errno("strdup");
919 				goto done;
920 			}
921 		} else if (len > repolen &&
922 		    got_path_is_child(path, repo_abspath, repolen)) {
923 			/* Matched an on-disk path inside repository. */
924 			if (got_repo_is_bare(repo)) {
925 				/*
926 				 * Matched an on-disk path inside repository
927 				 * database. Treat input as repository-relative.
928 				 */
929 				free(path);
930 				path = canonpath;
931 				canonpath = NULL;
932 			} else {
933 				char *child;
934 				/* Strip common prefix with repository path. */
935 				err = got_path_skip_common_ancestor(&child,
936 				    repo_abspath, path);
937 				if (err)
938 					goto done;
939 				free(path);
940 				path = child;
941 			}
942 		} else {
943 			/*
944 			 * Matched unrelated on-disk path.
945 			 * Treat input as repository-relative.
946 			 */
947 			free(path);
948 			path = canonpath;
949 			canonpath = NULL;
950 		}
951 	}
952 
953 	/* Make in-repository path absolute */
954 	if (path[0] != '/') {
955 		char *abspath;
956 		if (asprintf(&abspath, "/%s", path) == -1) {
957 			err = got_error_from_errno("asprintf");
958 			goto done;
959 		}
960 		free(path);
961 		path = abspath;
962 	}
963 
964 done:
965 	free(canonpath);
966 	if (err)
967 		free(path);
968 	else
969 		*in_repo_path = path;
970 	return err;
971 }
972 
973 static const struct got_error *
974 cache_packidx(struct got_repository *repo, struct got_packidx *packidx,
975     const char *path_packidx)
976 {
977 	const struct got_error *err = NULL;
978 	size_t i;
979 
980 	for (i = 0; i < repo->pack_cache_size; i++) {
981 		if (repo->packidx_cache[i] == NULL)
982 			break;
983 		if (strcmp(repo->packidx_cache[i]->path_packidx,
984 		    path_packidx) == 0) {
985 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
986 		}
987 	}
988 	if (i == repo->pack_cache_size) {
989 		i = repo->pack_cache_size - 1;
990 		err = got_packidx_close(repo->packidx_cache[i]);
991 		if (err)
992 			return err;
993 	}
994 
995 	repo->packidx_cache[i] = packidx;
996 
997 	return NULL;
998 }
999 
1000 int
1001 got_repo_is_packidx_filename(const char *name, size_t len)
1002 {
1003 	if (len != GOT_PACKIDX_NAMELEN)
1004 		return 0;
1005 
1006 	if (strncmp(name, GOT_PACK_PREFIX, strlen(GOT_PACK_PREFIX)) != 0)
1007 		return 0;
1008 
1009 	if (strcmp(name + strlen(GOT_PACK_PREFIX) +
1010 	    SHA1_DIGEST_STRING_LENGTH - 1, GOT_PACKIDX_SUFFIX) != 0)
1011 		return 0;
1012 
1013 	return 1;
1014 }
1015 
1016 static struct got_packidx_bloom_filter *
1017 get_packidx_bloom_filter(struct got_repository *repo,
1018     const char *path, size_t path_len)
1019 {
1020 	struct got_packidx_bloom_filter key;
1021 
1022 	if (strlcpy(key.path, path, sizeof(key.path)) >= sizeof(key.path))
1023 		return NULL; /* XXX */
1024 	key.path_len = path_len;
1025 
1026 	return RB_FIND(got_packidx_bloom_filter_tree,
1027 	    &repo->packidx_bloom_filters, &key);
1028 }
1029 
1030 int
1031 got_repo_check_packidx_bloom_filter(struct got_repository *repo,
1032     const char *path_packidx, struct got_object_id *id)
1033 {
1034 	struct got_packidx_bloom_filter *bf;
1035 
1036 	bf = get_packidx_bloom_filter(repo, path_packidx, strlen(path_packidx));
1037 	if (bf)
1038 		return bloom_check(bf->bloom, id->sha1, sizeof(id->sha1));
1039 
1040 	/* No bloom filter means this pack index must be searched. */
1041 	return 1;
1042 }
1043 
1044 static const struct got_error *
1045 add_packidx_bloom_filter(struct got_repository *repo,
1046     struct got_packidx *packidx, const char *path_packidx)
1047 {
1048 	int i, nobjects = be32toh(packidx->hdr.fanout_table[0xff]);
1049 	struct got_packidx_bloom_filter *bf;
1050 	size_t len;
1051 
1052 	/*
1053 	 * Don't use bloom filters for very large pack index files.
1054 	 * Large pack files will contain a relatively large fraction
1055 	 * of our objects so we will likely need to visit them anyway.
1056 	 * The more objects a pack file contains the higher the probability
1057 	 * of a false-positive match from the bloom filter. And reading
1058 	 * all object IDs from a large pack index file can be expensive.
1059 	 */
1060 	if (nobjects > 100000) /* cut-off at about 2MB, at 20 bytes per ID */
1061 		return NULL;
1062 
1063 	/* Do we already have a filter for this pack index? */
1064 	if (get_packidx_bloom_filter(repo, path_packidx,
1065 	    strlen(path_packidx)) != NULL)
1066 		return NULL;
1067 
1068 	bf = calloc(1, sizeof(*bf));
1069 	if (bf == NULL)
1070 		return got_error_from_errno("calloc");
1071 	bf->bloom = calloc(1, sizeof(*bf->bloom));
1072 	if (bf->bloom == NULL) {
1073 		free(bf);
1074 		return got_error_from_errno("calloc");
1075 	}
1076 	
1077 	len = strlcpy(bf->path, path_packidx, sizeof(bf->path));
1078 	if (len >= sizeof(bf->path)) {
1079 		free(bf->bloom);
1080 		free(bf);
1081 		return got_error(GOT_ERR_NO_SPACE);
1082 	}
1083 	bf->path_len = len;
1084 
1085 	/* Minimum size supported by our bloom filter is 1000 entries. */
1086 	bloom_init(bf->bloom, nobjects < 1000 ? 1000 : nobjects, 0.1);
1087 	for (i = 0; i < nobjects; i++) {
1088 		struct got_packidx_object_id *id;
1089 		id = &packidx->hdr.sorted_ids[i];
1090 		bloom_add(bf->bloom, id->sha1, sizeof(id->sha1));
1091 	}
1092 
1093 	RB_INSERT(got_packidx_bloom_filter_tree,
1094 	    &repo->packidx_bloom_filters, bf);
1095 	return NULL;
1096 }
1097 
1098 const struct got_error *
1099 got_repo_search_packidx(struct got_packidx **packidx, int *idx,
1100     struct got_repository *repo, struct got_object_id *id)
1101 {
1102 	const struct got_error *err;
1103 	struct got_pathlist_entry *pe;
1104 	size_t i;
1105 
1106 	/* Search pack index cache. */
1107 	for (i = 0; i < repo->pack_cache_size; i++) {
1108 		if (repo->packidx_cache[i] == NULL)
1109 			break;
1110 		if (!got_repo_check_packidx_bloom_filter(repo,
1111 		    repo->packidx_cache[i]->path_packidx, id))
1112 			continue; /* object will not be found in this index */
1113 		*idx = got_packidx_get_object_idx(repo->packidx_cache[i], id);
1114 		if (*idx != -1) {
1115 			*packidx = repo->packidx_cache[i];
1116 			/*
1117 			 * Move this cache entry to the front. Repeatedly
1118 			 * searching a wrong pack index can be expensive.
1119 			 */
1120 			if (i > 0) {
1121 				memmove(&repo->packidx_cache[1],
1122 				    &repo->packidx_cache[0],
1123 				    i * sizeof(repo->packidx_cache[0]));
1124 				repo->packidx_cache[0] = *packidx;
1125 			}
1126 			return NULL;
1127 		}
1128 	}
1129 	/* No luck. Search the filesystem. */
1130 
1131 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
1132 		const char *path_packidx = pe->path;
1133 		int is_cached = 0;
1134 
1135 		if (!got_repo_check_packidx_bloom_filter(repo,
1136 		    pe->path, id))
1137 			continue; /* object will not be found in this index */
1138 
1139 		for (i = 0; i < repo->pack_cache_size; i++) {
1140 			if (repo->packidx_cache[i] == NULL)
1141 				break;
1142 			if (strcmp(repo->packidx_cache[i]->path_packidx,
1143 			    path_packidx) == 0) {
1144 				is_cached = 1;
1145 				break;
1146 			}
1147 		}
1148 		if (is_cached)
1149 			continue; /* already searched */
1150 
1151 		err = got_packidx_open(packidx, got_repo_get_fd(repo),
1152 		    path_packidx, 0);
1153 		if (err)
1154 			goto done;
1155 
1156 		err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1157 		if (err)
1158 			goto done;
1159 
1160 		err = cache_packidx(repo, *packidx, path_packidx);
1161 		if (err)
1162 			goto done;
1163 
1164 		*idx = got_packidx_get_object_idx(*packidx, id);
1165 		if (*idx != -1) {
1166 			err = NULL; /* found the object */
1167 			goto done;
1168 		}
1169 	}
1170 
1171 	err = got_error_no_obj(id);
1172 done:
1173 	return err;
1174 }
1175 
1176 const struct got_error *
1177 got_repo_list_packidx(struct got_pathlist_head *packidx_paths,
1178     struct got_repository *repo)
1179 {
1180 	const struct got_error *err = NULL;
1181 	DIR *packdir = NULL;
1182 	struct dirent *dent;
1183 	char *path_packidx = NULL;
1184 	int packdir_fd;
1185 
1186 	packdir_fd = openat(got_repo_get_fd(repo),
1187 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY | O_CLOEXEC);
1188 	if (packdir_fd == -1) {
1189 		return got_error_from_errno_fmt("openat: %s/%s",
1190 		    got_repo_get_path_git_dir(repo),
1191 		    GOT_OBJECTS_PACK_DIR);
1192 	}
1193 
1194 	packdir = fdopendir(packdir_fd);
1195 	if (packdir == NULL) {
1196 		err = got_error_from_errno("fdopendir");
1197 		goto done;
1198 	}
1199 
1200 	while ((dent = readdir(packdir)) != NULL) {
1201 		if (!got_repo_is_packidx_filename(dent->d_name, dent->d_namlen))
1202 			continue;
1203 
1204 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1205 		    dent->d_name) == -1) {
1206 			err = got_error_from_errno("asprintf");
1207 			path_packidx = NULL;
1208 			break;
1209 		}
1210 
1211 		err = got_pathlist_append(packidx_paths, path_packidx, NULL);
1212 		if (err)
1213 			break;
1214 	}
1215 done:
1216 	if (err)
1217 		free(path_packidx);
1218 	if (packdir && closedir(packdir) != 0 && err == NULL)
1219 		err = got_error_from_errno("closedir");
1220 	return err;
1221 }
1222 
1223 const struct got_error *
1224 got_repo_get_packidx(struct got_packidx **packidx, const char *path_packidx,
1225     struct got_repository *repo)
1226 {
1227 	const struct got_error *err;
1228 	size_t i;
1229 
1230 	*packidx = NULL;
1231 
1232 	/* Search pack index cache. */
1233 	for (i = 0; i < repo->pack_cache_size; i++) {
1234 		if (repo->packidx_cache[i] == NULL)
1235 			break;
1236 		if (strcmp(repo->packidx_cache[i]->path_packidx,
1237 		    path_packidx) == 0) {
1238 			*packidx = repo->packidx_cache[i];
1239 			return NULL;
1240 		}
1241 	}
1242 	/* No luck. Search the filesystem. */
1243 
1244 	err = got_packidx_open(packidx, got_repo_get_fd(repo),
1245 	    path_packidx, 0);
1246 	if (err)
1247 		return err;
1248 
1249 	err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1250 	if (err)
1251 		goto done;
1252 
1253 	err = cache_packidx(repo, *packidx, path_packidx);
1254 done:
1255 	if (err) {
1256 		got_packidx_close(*packidx);
1257 		*packidx = NULL;
1258 	}
1259 	return err;
1260 }
1261 
1262 static const struct got_error *
1263 read_packfile_hdr(int fd, struct got_packidx *packidx)
1264 {
1265 	const struct got_error *err = NULL;
1266 	uint32_t totobj = be32toh(packidx->hdr.fanout_table[0xff]);
1267 	struct got_packfile_hdr hdr;
1268 	ssize_t n;
1269 
1270 	n = read(fd, &hdr, sizeof(hdr));
1271 	if (n < 0)
1272 		return got_error_from_errno("read");
1273 	if (n != sizeof(hdr))
1274 		return got_error(GOT_ERR_BAD_PACKFILE);
1275 
1276 	if (be32toh(hdr.signature) != GOT_PACKFILE_SIGNATURE ||
1277 	    be32toh(hdr.version) != GOT_PACKFILE_VERSION ||
1278 	    be32toh(hdr.nobjects) != totobj)
1279 		err = got_error(GOT_ERR_BAD_PACKFILE);
1280 
1281 	return err;
1282 }
1283 
1284 static const struct got_error *
1285 open_packfile(int *fd, struct got_repository *repo,
1286     const char *relpath, struct got_packidx *packidx)
1287 {
1288 	const struct got_error *err = NULL;
1289 
1290 	*fd = openat(got_repo_get_fd(repo), relpath,
1291 	    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
1292 	if (*fd == -1)
1293 		return got_error_from_errno_fmt("openat: %s/%s",
1294 		    got_repo_get_path_git_dir(repo), relpath);
1295 
1296 	if (packidx) {
1297 		err = read_packfile_hdr(*fd, packidx);
1298 		if (err) {
1299 			close(*fd);
1300 			*fd = -1;
1301 		}
1302 	}
1303 
1304 	return err;
1305 }
1306 
1307 const struct got_error *
1308 got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1309     const char *path_packfile, struct got_packidx *packidx)
1310 {
1311 	const struct got_error *err = NULL;
1312 	struct got_pack *pack = NULL;
1313 	struct stat sb;
1314 	size_t i;
1315 
1316 	if (packp)
1317 		*packp = NULL;
1318 
1319 	for (i = 0; i < repo->pack_cache_size; i++) {
1320 		pack = &repo->packs[i];
1321 		if (pack->path_packfile == NULL)
1322 			break;
1323 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1324 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
1325 	}
1326 
1327 	if (i == repo->pack_cache_size) {
1328 		err = got_pack_close(&repo->packs[i - 1]);
1329 		if (err)
1330 			return err;
1331 		memmove(&repo->packs[1], &repo->packs[0],
1332 		    sizeof(repo->packs) - sizeof(repo->packs[0]));
1333 		i = 0;
1334 	}
1335 
1336 	pack = &repo->packs[i];
1337 
1338 	pack->path_packfile = strdup(path_packfile);
1339 	if (pack->path_packfile == NULL) {
1340 		err = got_error_from_errno("strdup");
1341 		goto done;
1342 	}
1343 
1344 	err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1345 	if (err)
1346 		goto done;
1347 
1348 	if (fstat(pack->fd, &sb) != 0) {
1349 		err = got_error_from_errno("fstat");
1350 		goto done;
1351 	}
1352 	pack->filesize = sb.st_size;
1353 
1354 	pack->privsep_child = NULL;
1355 
1356 #ifndef GOT_PACK_NO_MMAP
1357 	pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1358 	    pack->fd, 0);
1359 	if (pack->map == MAP_FAILED) {
1360 		if (errno != ENOMEM) {
1361 			err = got_error_from_errno("mmap");
1362 			goto done;
1363 		}
1364 		pack->map = NULL; /* fall back to read(2) */
1365 	}
1366 #endif
1367 done:
1368 	if (err) {
1369 		if (pack) {
1370 			free(pack->path_packfile);
1371 			memset(pack, 0, sizeof(*pack));
1372 		}
1373 	} else if (packp)
1374 		*packp = pack;
1375 	return err;
1376 }
1377 
1378 struct got_pack *
1379 got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1380 {
1381 	struct got_pack *pack = NULL;
1382 	size_t i;
1383 
1384 	for (i = 0; i < repo->pack_cache_size; i++) {
1385 		pack = &repo->packs[i];
1386 		if (pack->path_packfile == NULL)
1387 			break;
1388 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1389 			return pack;
1390 	}
1391 
1392 	return NULL;
1393 }
1394 
1395 const struct got_error *
1396 got_repo_init(const char *repo_path)
1397 {
1398 	const struct got_error *err = NULL;
1399 	const char *dirnames[] = {
1400 		GOT_OBJECTS_DIR,
1401 		GOT_OBJECTS_PACK_DIR,
1402 		GOT_REFS_DIR,
1403 	};
1404 	const char *description_str = "Unnamed repository; "
1405 	    "edit this file 'description' to name the repository.";
1406 	const char *headref_str = "ref: refs/heads/main";
1407 	const char *gitconfig_str = "[core]\n"
1408 	    "\trepositoryformatversion = 0\n"
1409 	    "\tfilemode = true\n"
1410 	    "\tbare = true\n";
1411 	char *path;
1412 	size_t i;
1413 
1414 	if (!got_path_dir_is_empty(repo_path))
1415 		return got_error(GOT_ERR_DIR_NOT_EMPTY);
1416 
1417 	for (i = 0; i < nitems(dirnames); i++) {
1418 		if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1419 			return got_error_from_errno("asprintf");
1420 		}
1421 		err = got_path_mkdir(path);
1422 		free(path);
1423 		if (err)
1424 			return err;
1425 	}
1426 
1427 	if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1428 		return got_error_from_errno("asprintf");
1429 	err = got_path_create_file(path, description_str);
1430 	free(path);
1431 	if (err)
1432 		return err;
1433 
1434 	if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE) == -1)
1435 		return got_error_from_errno("asprintf");
1436 	err = got_path_create_file(path, headref_str);
1437 	free(path);
1438 	if (err)
1439 		return err;
1440 
1441 	if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1442 		return got_error_from_errno("asprintf");
1443 	err = got_path_create_file(path, gitconfig_str);
1444 	free(path);
1445 	if (err)
1446 		return err;
1447 
1448 	return NULL;
1449 }
1450 
1451 static const struct got_error *
1452 match_packed_object(struct got_object_id **unique_id,
1453     struct got_repository *repo, const char *id_str_prefix, int obj_type)
1454 {
1455 	const struct got_error *err = NULL;
1456 	struct got_object_id_queue matched_ids;
1457 	struct got_pathlist_entry *pe;
1458 
1459 	STAILQ_INIT(&matched_ids);
1460 
1461 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
1462 		const char *path_packidx = pe->path;
1463 		struct got_packidx *packidx;
1464 		struct got_object_qid *qid;
1465 
1466 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1467 		    path_packidx, 0);
1468 		if (err)
1469 			break;
1470 
1471 		err = got_packidx_match_id_str_prefix(&matched_ids,
1472 		    packidx, id_str_prefix);
1473 		if (err) {
1474 			got_packidx_close(packidx);
1475 			break;
1476 		}
1477 		err = got_packidx_close(packidx);
1478 		if (err)
1479 			break;
1480 
1481 		STAILQ_FOREACH(qid, &matched_ids, entry) {
1482 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1483 				int matched_type;
1484 				err = got_object_get_type(&matched_type, repo,
1485 				    qid->id);
1486 				if (err)
1487 					goto done;
1488 				if (matched_type != obj_type)
1489 					continue;
1490 			}
1491 			if (*unique_id == NULL) {
1492 				*unique_id = got_object_id_dup(qid->id);
1493 				if (*unique_id == NULL) {
1494 					err = got_error_from_errno("malloc");
1495 					goto done;
1496 				}
1497 			} else {
1498 				if (got_object_id_cmp(*unique_id, qid->id) == 0)
1499 					continue; /* packed multiple times */
1500 				err = got_error(GOT_ERR_AMBIGUOUS_ID);
1501 				goto done;
1502 			}
1503 		}
1504 	}
1505 done:
1506 	got_object_id_queue_free(&matched_ids);
1507 	if (err) {
1508 		free(*unique_id);
1509 		*unique_id = NULL;
1510 	}
1511 	return err;
1512 }
1513 
1514 static const struct got_error *
1515 match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1516     const char *object_dir, const char *id_str_prefix, int obj_type,
1517     struct got_repository *repo)
1518 {
1519 	const struct got_error *err = NULL;
1520 	char *path;
1521 	DIR *dir = NULL;
1522 	struct dirent *dent;
1523 	struct got_object_id id;
1524 
1525 	if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1526 		err = got_error_from_errno("asprintf");
1527 		goto done;
1528 	}
1529 
1530 	dir = opendir(path);
1531 	if (dir == NULL) {
1532 		if (errno == ENOENT) {
1533 			err = NULL;
1534 			goto done;
1535 		}
1536 		err = got_error_from_errno2("opendir", path);
1537 		goto done;
1538 	}
1539 	while ((dent = readdir(dir)) != NULL) {
1540 		char *id_str;
1541 		int cmp;
1542 
1543 		if (strcmp(dent->d_name, ".") == 0 ||
1544 		    strcmp(dent->d_name, "..") == 0)
1545 			continue;
1546 
1547 		if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1548 			err = got_error_from_errno("asprintf");
1549 			goto done;
1550 		}
1551 
1552 		if (!got_parse_sha1_digest(id.sha1, id_str))
1553 			continue;
1554 
1555 		/*
1556 		 * Directory entries do not necessarily appear in
1557 		 * sorted order, so we must iterate over all of them.
1558 		 */
1559 		cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1560 		if (cmp != 0) {
1561 			free(id_str);
1562 			continue;
1563 		}
1564 
1565 		if (*unique_id == NULL) {
1566 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1567 				int matched_type;
1568 				err = got_object_get_type(&matched_type, repo,
1569 				    &id);
1570 				if (err)
1571 					goto done;
1572 				if (matched_type != obj_type)
1573 					continue;
1574 			}
1575 			*unique_id = got_object_id_dup(&id);
1576 			if (*unique_id == NULL) {
1577 				err = got_error_from_errno("got_object_id_dup");
1578 				free(id_str);
1579 				goto done;
1580 			}
1581 		} else {
1582 			if (got_object_id_cmp(*unique_id, &id) == 0)
1583 				continue; /* both packed and loose */
1584 			err = got_error(GOT_ERR_AMBIGUOUS_ID);
1585 			free(id_str);
1586 			goto done;
1587 		}
1588 	}
1589 done:
1590 	if (dir && closedir(dir) != 0 && err == NULL)
1591 		err = got_error_from_errno("closedir");
1592 	if (err) {
1593 		free(*unique_id);
1594 		*unique_id = NULL;
1595 	}
1596 	free(path);
1597 	return err;
1598 }
1599 
1600 const struct got_error *
1601 got_repo_match_object_id_prefix(struct got_object_id **id,
1602     const char *id_str_prefix, int obj_type, struct got_repository *repo)
1603 {
1604 	const struct got_error *err = NULL;
1605 	char *path_objects = got_repo_get_path_objects(repo);
1606 	char *object_dir = NULL;
1607 	size_t len;
1608 	int i;
1609 
1610 	*id = NULL;
1611 
1612 	len = strlen(id_str_prefix);
1613 	if (len > SHA1_DIGEST_STRING_LENGTH - 1)
1614 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1615 
1616 	for (i = 0; i < len; i++) {
1617 		if (isxdigit((unsigned char)id_str_prefix[i]))
1618 			continue;
1619 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1620 	}
1621 
1622 	if (len >= 2) {
1623 		err = match_packed_object(id, repo, id_str_prefix, obj_type);
1624 		if (err)
1625 			goto done;
1626 		object_dir = strndup(id_str_prefix, 2);
1627 		if (object_dir == NULL) {
1628 			err = got_error_from_errno("strdup");
1629 			goto done;
1630 		}
1631 		err = match_loose_object(id, path_objects, object_dir,
1632 		    id_str_prefix, obj_type, repo);
1633 	} else if (len == 1) {
1634 		int i;
1635 		for (i = 0; i < 0xf; i++) {
1636 			if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1637 			    == -1) {
1638 				err = got_error_from_errno("asprintf");
1639 				goto done;
1640 			}
1641 			err = match_packed_object(id, repo, object_dir,
1642 			    obj_type);
1643 			if (err)
1644 				goto done;
1645 			err = match_loose_object(id, path_objects, object_dir,
1646 			    id_str_prefix, obj_type, repo);
1647 			if (err)
1648 				goto done;
1649 		}
1650 	} else {
1651 		err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1652 		goto done;
1653 	}
1654 done:
1655 	free(object_dir);
1656 	if (err) {
1657 		free(*id);
1658 		*id = NULL;
1659 	} else if (*id == NULL) {
1660 		switch (obj_type) {
1661 		case GOT_OBJ_TYPE_BLOB:
1662 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1663 			    GOT_OBJ_LABEL_BLOB, id_str_prefix);
1664 			break;
1665 		case GOT_OBJ_TYPE_TREE:
1666 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1667 			    GOT_OBJ_LABEL_TREE, id_str_prefix);
1668 			break;
1669 		case GOT_OBJ_TYPE_COMMIT:
1670 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1671 			    GOT_OBJ_LABEL_COMMIT, id_str_prefix);
1672 			break;
1673 		case GOT_OBJ_TYPE_TAG:
1674 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1675 			    GOT_OBJ_LABEL_TAG, id_str_prefix);
1676 			break;
1677 		default:
1678 			err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ);
1679 			break;
1680 		}
1681 	}
1682 
1683 	return err;
1684 }
1685 
1686 const struct got_error *
1687 got_repo_match_object_id(struct got_object_id **id, char **label,
1688     const char *id_str, int obj_type, struct got_reflist_head *refs,
1689     struct got_repository *repo)
1690 {
1691 	const struct got_error *err;
1692 	struct got_tag_object *tag;
1693 	struct got_reference *ref = NULL;
1694 
1695 	*id = NULL;
1696 	if (label)
1697 		*label = NULL;
1698 
1699 	if (refs) {
1700 		err = got_repo_object_match_tag(&tag, id_str, obj_type,
1701 		    refs, repo);
1702 		if (err == NULL) {
1703 			*id = got_object_id_dup(
1704 			    got_object_tag_get_object_id(tag));
1705 			if (*id == NULL)
1706 				err = got_error_from_errno("got_object_id_dup");
1707 			else if (label && asprintf(label, "refs/tags/%s",
1708 			    got_object_tag_get_name(tag)) == -1) {
1709 				err = got_error_from_errno("asprintf");
1710 				free(*id);
1711 				*id = NULL;
1712 			}
1713 			got_object_tag_close(tag);
1714 			return err;
1715 		} else if (err->code != GOT_ERR_OBJ_TYPE &&
1716 		    err->code != GOT_ERR_NO_OBJ)
1717 			return err;
1718 	}
1719 
1720 	err = got_ref_open(&ref, repo, id_str, 0);
1721 	if (err == NULL) {
1722 		err = got_ref_resolve(id, repo, ref);
1723 		if (err)
1724 			goto done;
1725 		if (label) {
1726 			*label = strdup(got_ref_get_name(ref));
1727 			if (*label == NULL) {
1728 				err = got_error_from_errno("strdup");
1729 				goto done;
1730 			}
1731 		}
1732 	} else {
1733 		if (err->code != GOT_ERR_NOT_REF &&
1734 		    err->code != GOT_ERR_BAD_REF_NAME)
1735 			goto done;
1736 		err = got_repo_match_object_id_prefix(id, id_str,
1737 		    obj_type, repo);
1738 		if (err) {
1739 			if (err->code == GOT_ERR_BAD_OBJ_ID_STR)
1740 				err = got_error_not_ref(id_str);
1741 			goto done;
1742 		}
1743 		if (label) {
1744 			err = got_object_id_str(label, *id);
1745 			if (*label == NULL) {
1746 				err = got_error_from_errno("strdup");
1747 				goto done;
1748 			}
1749 		}
1750 	}
1751 done:
1752 	if (ref)
1753 		got_ref_close(ref);
1754 	return err;
1755 }
1756 
1757 const struct got_error *
1758 got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1759     int obj_type, struct got_reflist_head *refs, struct got_repository *repo)
1760 {
1761 	const struct got_error *err = NULL;
1762 	struct got_reflist_entry *re;
1763 	struct got_object_id *tag_id;
1764 	int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1765 
1766 	*tag = NULL;
1767 
1768 	TAILQ_FOREACH(re, refs, entry) {
1769 		const char *refname;
1770 		refname = got_ref_get_name(re->ref);
1771 		if (got_ref_is_symbolic(re->ref))
1772 			continue;
1773 		if (strncmp(refname, "refs/tags/", 10) != 0)
1774 			continue;
1775 		if (!name_is_absolute)
1776 			refname += strlen("refs/tags/");
1777 		if (strcmp(refname, name) != 0)
1778 			continue;
1779 		err = got_ref_resolve(&tag_id, repo, re->ref);
1780 		if (err)
1781 			break;
1782 		err = got_object_open_as_tag(tag, repo, tag_id);
1783 		free(tag_id);
1784 		if (err)
1785 			break;
1786 		if (obj_type == GOT_OBJ_TYPE_ANY ||
1787 		    got_object_tag_get_object_type(*tag) == obj_type)
1788 			break;
1789 		got_object_tag_close(*tag);
1790 		*tag = NULL;
1791 	}
1792 
1793 	if (err == NULL && *tag == NULL)
1794 		err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1795 		    GOT_OBJ_LABEL_TAG, name);
1796 	return err;
1797 }
1798 
1799 static const struct got_error *
1800 alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1801     const char *name, mode_t mode, struct got_object_id *blob_id)
1802 {
1803 	const struct got_error *err = NULL;
1804 
1805 	 *new_te = NULL;
1806 
1807 	*new_te = calloc(1, sizeof(**new_te));
1808 	if (*new_te == NULL)
1809 		return got_error_from_errno("calloc");
1810 
1811 	if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1812 	    sizeof((*new_te)->name)) {
1813 		err = got_error(GOT_ERR_NO_SPACE);
1814 		goto done;
1815 	}
1816 
1817 	if (S_ISLNK(mode)) {
1818 		(*new_te)->mode = S_IFLNK;
1819 	} else {
1820 		(*new_te)->mode = S_IFREG;
1821 		(*new_te)->mode |= (mode & (S_IRWXU | S_IRWXG | S_IRWXO));
1822 	}
1823 	memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1824 done:
1825 	if (err && *new_te) {
1826 		free(*new_te);
1827 		*new_te = NULL;
1828 	}
1829 	return err;
1830 }
1831 
1832 static const struct got_error *
1833 import_file(struct got_tree_entry **new_te, struct dirent *de,
1834     const char *path, struct got_repository *repo)
1835 {
1836 	const struct got_error *err;
1837 	struct got_object_id *blob_id = NULL;
1838 	char *filepath;
1839 	struct stat sb;
1840 
1841 	if (asprintf(&filepath, "%s%s%s", path,
1842 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1843 		return got_error_from_errno("asprintf");
1844 
1845 	if (lstat(filepath, &sb) != 0) {
1846 		err = got_error_from_errno2("lstat", path);
1847 		goto done;
1848 	}
1849 
1850 	err = got_object_blob_create(&blob_id, filepath, repo);
1851 	if (err)
1852 		goto done;
1853 
1854 	err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1855 	    blob_id);
1856 done:
1857 	free(filepath);
1858 	if (err)
1859 		free(blob_id);
1860 	return err;
1861 }
1862 
1863 static const struct got_error *
1864 insert_tree_entry(struct got_tree_entry *new_te,
1865     struct got_pathlist_head *paths)
1866 {
1867 	const struct got_error *err = NULL;
1868 	struct got_pathlist_entry *new_pe;
1869 
1870 	err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1871 	if (err)
1872 		return err;
1873 	if (new_pe == NULL)
1874 		return got_error(GOT_ERR_TREE_DUP_ENTRY);
1875 	return NULL;
1876 }
1877 
1878 static const struct got_error *write_tree(struct got_object_id **,
1879     const char *, struct got_pathlist_head *, struct got_repository *,
1880     got_repo_import_cb progress_cb, void *progress_arg);
1881 
1882 static const struct got_error *
1883 import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1884     const char *path, struct got_pathlist_head *ignores,
1885     struct got_repository *repo,
1886     got_repo_import_cb progress_cb, void *progress_arg)
1887 {
1888 	const struct got_error *err;
1889 	struct got_object_id *id = NULL;
1890 	char *subdirpath;
1891 
1892 	if (asprintf(&subdirpath, "%s%s%s", path,
1893 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1894 		return got_error_from_errno("asprintf");
1895 
1896 	(*new_te) = calloc(1, sizeof(**new_te));
1897 	if (*new_te == NULL)
1898 		return got_error_from_errno("calloc");
1899 	(*new_te)->mode = S_IFDIR;
1900 	if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1901 	    sizeof((*new_te)->name)) {
1902 		err = got_error(GOT_ERR_NO_SPACE);
1903 		goto done;
1904 	}
1905 	err = write_tree(&id, subdirpath, ignores,  repo,
1906 	    progress_cb, progress_arg);
1907 	if (err)
1908 		goto done;
1909 	memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1910 	
1911 done:
1912 	free(id);
1913 	free(subdirpath);
1914 	if (err) {
1915 		free(*new_te);
1916 		*new_te = NULL;
1917 	}
1918 	return err;
1919 }
1920 
1921 static const struct got_error *
1922 write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1923     struct got_pathlist_head *ignores, struct got_repository *repo,
1924     got_repo_import_cb progress_cb, void *progress_arg)
1925 {
1926 	const struct got_error *err = NULL;
1927 	DIR *dir;
1928 	struct dirent *de;
1929 	int nentries;
1930 	struct got_tree_entry *new_te = NULL;
1931 	struct got_pathlist_head paths;
1932 	struct got_pathlist_entry *pe;
1933 
1934 	*new_tree_id = NULL;
1935 
1936 	TAILQ_INIT(&paths);
1937 
1938 	dir = opendir(path_dir);
1939 	if (dir == NULL) {
1940 		err = got_error_from_errno2("opendir", path_dir);
1941 		goto done;
1942 	}
1943 
1944 	nentries = 0;
1945 	while ((de = readdir(dir)) != NULL) {
1946 		int ignore = 0;
1947 		int type;
1948 
1949 		if (strcmp(de->d_name, ".") == 0 ||
1950 		    strcmp(de->d_name, "..") == 0)
1951 			continue;
1952 
1953 		TAILQ_FOREACH(pe, ignores, entry) {
1954 			if (fnmatch(pe->path, de->d_name, 0) == 0) {
1955 				ignore = 1;
1956 				break;
1957 			}
1958 		}
1959 		if (ignore)
1960 			continue;
1961 
1962 		err = got_path_dirent_type(&type, path_dir, de);
1963 		if (err)
1964 			goto done;
1965 
1966 		if (type == DT_DIR) {
1967 			err = import_subdir(&new_te, de, path_dir,
1968 			    ignores, repo, progress_cb, progress_arg);
1969 			if (err) {
1970 				if (err->code != GOT_ERR_NO_TREE_ENTRY)
1971 					goto done;
1972 				err = NULL;
1973 				continue;
1974 			}
1975 		} else if (type == DT_REG || type == DT_LNK) {
1976 			err = import_file(&new_te, de, path_dir, repo);
1977 			if (err)
1978 				goto done;
1979 		} else
1980 			continue;
1981 
1982 		err = insert_tree_entry(new_te, &paths);
1983 		if (err)
1984 			goto done;
1985 		nentries++;
1986 	}
1987 
1988 	if (TAILQ_EMPTY(&paths)) {
1989 		err = got_error_msg(GOT_ERR_NO_TREE_ENTRY,
1990 		    "cannot create tree without any entries");
1991 		goto done;
1992 	}
1993 
1994 	TAILQ_FOREACH(pe, &paths, entry) {
1995 		struct got_tree_entry *te = pe->data;
1996 		char *path;
1997 		if (!S_ISREG(te->mode) && !S_ISLNK(te->mode))
1998 			continue;
1999 		if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
2000 			err = got_error_from_errno("asprintf");
2001 			goto done;
2002 		}
2003 		err = (*progress_cb)(progress_arg, path);
2004 		free(path);
2005 		if (err)
2006 			goto done;
2007 	}
2008 
2009 	err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
2010 done:
2011 	if (dir)
2012 		closedir(dir);
2013 	got_pathlist_free(&paths);
2014 	return err;
2015 }
2016 
2017 const struct got_error *
2018 got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
2019     const char *logmsg, const char *author, struct got_pathlist_head *ignores,
2020     struct got_repository *repo, got_repo_import_cb progress_cb,
2021     void *progress_arg)
2022 {
2023 	const struct got_error *err;
2024 	struct got_object_id *new_tree_id;
2025 
2026 	err = write_tree(&new_tree_id, path_dir, ignores, repo,
2027 	    progress_cb, progress_arg);
2028 	if (err)
2029 		return err;
2030 
2031 	err = got_object_commit_create(new_commit_id, new_tree_id, NULL, 0,
2032 	    author, time(NULL), author, time(NULL), logmsg, repo);
2033 	free(new_tree_id);
2034 	return err;
2035 }
2036 
2037 const struct got_error *
2038 got_repo_get_loose_object_info(int *nobjects, off_t *ondisk_size,
2039     struct got_repository *repo)
2040 {
2041 	const struct got_error *err = NULL;
2042 	char *path_objects = NULL, *path = NULL;
2043 	DIR *dir = NULL;
2044 	struct got_object_id id;
2045 	int i;
2046 
2047 	*nobjects = 0;
2048 	*ondisk_size = 0;
2049 
2050 	path_objects = got_repo_get_path_objects(repo);
2051 	if (path_objects == NULL)
2052 		return got_error_from_errno("got_repo_get_path_objects");
2053 
2054 	for (i = 0; i <= 0xff; i++) {
2055 		struct dirent *dent;
2056 
2057 		if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
2058 			err = got_error_from_errno("asprintf");
2059 			break;
2060 		}
2061 
2062 		dir = opendir(path);
2063 		if (dir == NULL) {
2064 			if (errno == ENOENT) {
2065 				err = NULL;
2066 				continue;
2067 			}
2068 			err = got_error_from_errno2("opendir", path);
2069 			break;
2070 		}
2071 
2072 		while ((dent = readdir(dir)) != NULL) {
2073 			char *id_str;
2074 			int fd;
2075 			struct stat sb;
2076 
2077 			if (strcmp(dent->d_name, ".") == 0 ||
2078 			    strcmp(dent->d_name, "..") == 0)
2079 				continue;
2080 
2081 			if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
2082 				err = got_error_from_errno("asprintf");
2083 				goto done;
2084 			}
2085 
2086 			if (!got_parse_sha1_digest(id.sha1, id_str)) {
2087 				free(id_str);
2088 				continue;
2089 			}
2090 			free(id_str);
2091 
2092 			err = got_object_open_loose_fd(&fd, &id, repo);
2093 			if (err)
2094 				goto done;
2095 
2096 			if (fstat(fd, &sb) == -1) {
2097 				err = got_error_from_errno("fstat");
2098 				close(fd);
2099 				goto done;
2100 			}
2101 			(*nobjects)++;
2102 			(*ondisk_size) += sb.st_size;
2103 
2104 			if (close(fd) == -1) {
2105 				err = got_error_from_errno("close");
2106 				goto done;
2107 			}
2108 		}
2109 
2110 		if (closedir(dir) != 0) {
2111 			err = got_error_from_errno("closedir");
2112 			goto done;
2113 		}
2114 		dir = NULL;
2115 
2116 		free(path);
2117 		path = NULL;
2118 	}
2119 done:
2120 	if (dir && closedir(dir) != 0 && err == NULL)
2121 		err = got_error_from_errno("closedir");
2122 
2123 	if (err) {
2124 		*nobjects = 0;
2125 		*ondisk_size = 0;
2126 	}
2127 	free(path_objects);
2128 	free(path);
2129 	return err;
2130 }
2131 
2132 const struct got_error *
2133 got_repo_get_packfile_info(int *npackfiles, int *nobjects,
2134     off_t *total_packsize, struct got_repository *repo)
2135 {
2136 	const struct got_error *err = NULL;
2137 	DIR *packdir = NULL;
2138 	struct dirent *dent;
2139 	struct got_packidx *packidx = NULL;
2140 	char *path_packidx;
2141 	char *path_packfile;
2142 	int packdir_fd;
2143 	struct stat sb;
2144 
2145 	*npackfiles = 0;
2146 	*nobjects = 0;
2147 	*total_packsize = 0;
2148 
2149 	packdir_fd = openat(got_repo_get_fd(repo),
2150 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
2151 	if (packdir_fd == -1) {
2152 		return got_error_from_errno_fmt("openat: %s/%s",
2153 		    got_repo_get_path_git_dir(repo),
2154 		    GOT_OBJECTS_PACK_DIR);
2155 	}
2156 
2157 	packdir = fdopendir(packdir_fd);
2158 	if (packdir == NULL) {
2159 		err = got_error_from_errno("fdopendir");
2160 		goto done;
2161 	}
2162 
2163 	while ((dent = readdir(packdir)) != NULL) {
2164 		if (!got_repo_is_packidx_filename(dent->d_name, dent->d_namlen))
2165 			continue;
2166 
2167 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
2168 		    dent->d_name) == -1) {
2169 			err = got_error_from_errno("asprintf");
2170 			goto done;
2171 		}
2172 
2173 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
2174 		    path_packidx, 0);
2175 		free(path_packidx);
2176 		if (err)
2177 			goto done;
2178 
2179 		if (fstat(packidx->fd, &sb) == -1)
2180 			goto done;
2181 		*total_packsize += sb.st_size;
2182 
2183 		err = got_packidx_get_packfile_path(&path_packfile,
2184 		    packidx->path_packidx);
2185 		if (err)
2186 			goto done;
2187 
2188 		if (fstatat(got_repo_get_fd(repo), path_packfile, &sb,
2189 		    0) == -1) {
2190 			free(path_packfile);
2191 			goto done;
2192 		}
2193 		free(path_packfile);
2194 		*total_packsize += sb.st_size;
2195 
2196 		*nobjects += be32toh(packidx->hdr.fanout_table[0xff]);
2197 
2198 		(*npackfiles)++;
2199 
2200 		got_packidx_close(packidx);
2201 		packidx = NULL;
2202 	}
2203 done:
2204 	if (packidx)
2205 		got_packidx_close(packidx);
2206 	if (packdir && closedir(packdir) != 0 && err == NULL)
2207 		err = got_error_from_errno("closedir");
2208 	if (err) {
2209 		*npackfiles = 0;
2210 		*nobjects = 0;
2211 		*total_packsize = 0;
2212 	}
2213 	return err;
2214 }
2215 
2216 RB_GENERATE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
2217     got_packidx_bloom_filter_cmp);