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/uio.h>
19 #include <sys/socket.h>
20 #include <sys/stat.h>
21 #include <sys/mman.h>
22 #include <sys/resource.h>
23 
24 #include <ctype.h>
25 #include <fcntl.h>
26 #include <fnmatch.h>
27 #include <limits.h>
28 #include <dirent.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <time.h>
33 #include <unistd.h>
34 #include <zlib.h>
35 #include <errno.h>
36 #include <libgen.h>
37 #include <stdint.h>
38 
39 #include "bloom.h"
40 
41 #include "got_error.h"
42 #include "got_reference.h"
43 #include "got_repository.h"
44 #include "got_path.h"
45 #include "got_cancel.h"
46 #include "got_object.h"
47 
48 #include "got_lib_delta.h"
49 #include "got_lib_inflate.h"
50 #include "got_lib_object.h"
51 #include "got_lib_object_parse.h"
52 #include "got_lib_object_create.h"
53 #include "got_lib_pack.h"
54 #include "got_lib_privsep.h"
55 #include "got_lib_sha1.h"
56 #include "got_lib_object_cache.h"
57 #include "got_lib_repository.h"
58 #include "got_lib_gotconfig.h"
59 
60 #ifndef nitems
61 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
62 #endif
63 
64 RB_PROTOTYPE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
65     got_packidx_bloom_filter_cmp);
66 
67 const char *
68 got_repo_get_path(struct got_repository *repo)
69 {
70 	return repo->path;
71 }
72 
73 const char *
74 got_repo_get_path_git_dir(struct got_repository *repo)
75 {
76 	return repo->path_git_dir;
77 }
78 
79 int
80 got_repo_get_fd(struct got_repository *repo)
81 {
82 	return repo->gitdir_fd;
83 }
84 
85 const char *
86 got_repo_get_gitconfig_author_name(struct got_repository *repo)
87 {
88 	return repo->gitconfig_author_name;
89 }
90 
91 const char *
92 got_repo_get_gitconfig_author_email(struct got_repository *repo)
93 {
94 	return repo->gitconfig_author_email;
95 }
96 
97 const char *
98 got_repo_get_global_gitconfig_author_name(struct got_repository *repo)
99 {
100 	return repo->global_gitconfig_author_name;
101 }
102 
103 const char *
104 got_repo_get_global_gitconfig_author_email(struct got_repository *repo)
105 {
106 	return repo->global_gitconfig_author_email;
107 }
108 
109 const char *
110 got_repo_get_gitconfig_owner(struct got_repository *repo)
111 {
112 	return repo->gitconfig_owner;
113 }
114 
115 void
116 got_repo_get_gitconfig_extensions(char ***extensions, int *nextensions,
117     struct got_repository *repo)
118 {
119 	*extensions = repo->extensions;
120 	*nextensions = repo->nextensions;
121 }
122 
123 int
124 got_repo_is_bare(struct got_repository *repo)
125 {
126 	return (strcmp(repo->path, repo->path_git_dir) == 0);
127 }
128 
129 static char *
130 get_path_git_child(struct got_repository *repo, const char *basename)
131 {
132 	char *path_child;
133 
134 	if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
135 	    basename) == -1)
136 		return NULL;
137 
138 	return path_child;
139 }
140 
141 char *
142 got_repo_get_path_objects(struct got_repository *repo)
143 {
144 	return get_path_git_child(repo, GOT_OBJECTS_DIR);
145 }
146 
147 char *
148 got_repo_get_path_objects_pack(struct got_repository *repo)
149 {
150 	return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);
151 }
152 
153 char *
154 got_repo_get_path_refs(struct got_repository *repo)
155 {
156 	return get_path_git_child(repo, GOT_REFS_DIR);
157 }
158 
159 char *
160 got_repo_get_path_packed_refs(struct got_repository *repo)
161 {
162 	return get_path_git_child(repo, GOT_PACKED_REFS_FILE);
163 }
164 
165 static char *
166 get_path_head(struct got_repository *repo)
167 {
168 	return get_path_git_child(repo, GOT_HEAD_FILE);
169 }
170 
171 char *
172 got_repo_get_path_gitconfig(struct got_repository *repo)
173 {
174 	return get_path_git_child(repo, GOT_GITCONFIG);
175 }
176 
177 char *
178 got_repo_get_path_gotconfig(struct got_repository *repo)
179 {
180 	return get_path_git_child(repo, GOT_GOTCONFIG_FILENAME);
181 }
182 
183 const struct got_gotconfig *
184 got_repo_get_gotconfig(struct got_repository *repo)
185 {
186 	return repo->gotconfig;
187 }
188 
189 void
190 got_repo_get_gitconfig_remotes(int *nremotes,
191     const struct got_remote_repo **remotes, struct got_repository *repo)
192 {
193 	*nremotes = repo->ngitconfig_remotes;
194 	*remotes = repo->gitconfig_remotes;
195 }
196 
197 static int
198 is_git_repo(struct got_repository *repo)
199 {
200 	const char *path_git = got_repo_get_path_git_dir(repo);
201 	char *path_objects = got_repo_get_path_objects(repo);
202 	char *path_refs = got_repo_get_path_refs(repo);
203 	char *path_head = get_path_head(repo);
204 	int ret = 0;
205 	struct stat sb;
206 	struct got_reference *head_ref;
207 
208 	if (lstat(path_git, &sb) == -1)
209 		goto done;
210 	if (!S_ISDIR(sb.st_mode))
211 		goto done;
212 
213 	if (lstat(path_objects, &sb) == -1)
214 		goto done;
215 	if (!S_ISDIR(sb.st_mode))
216 		goto done;
217 
218 	if (lstat(path_refs, &sb) == -1)
219 		goto done;
220 	if (!S_ISDIR(sb.st_mode))
221 		goto done;
222 
223 	if (lstat(path_head, &sb) == -1)
224 		goto done;
225 	if (!S_ISREG(sb.st_mode))
226 		goto done;
227 
228 	/* Check if the HEAD reference can be opened. */
229 	if (got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0) != NULL)
230 		goto done;
231 	got_ref_close(head_ref);
232 
233 	ret = 1;
234 done:
235 	free(path_objects);
236 	free(path_refs);
237 	free(path_head);
238 	return ret;
239 
240 }
241 
242 const struct got_error *
243 got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
244     struct got_object *obj)
245 {
246 #ifndef GOT_NO_OBJ_CACHE
247 	const struct got_error *err = NULL;
248 	err = got_object_cache_add(&repo->objcache, id, obj);
249 	if (err) {
250 		if (err->code == GOT_ERR_OBJ_EXISTS ||
251 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
252 			err = NULL;
253 		return err;
254 	}
255 	obj->refcnt++;
256 #endif
257 	return NULL;
258 }
259 
260 struct got_object *
261 got_repo_get_cached_object(struct got_repository *repo,
262     struct got_object_id *id)
263 {
264 	return (struct got_object *)got_object_cache_get(&repo->objcache, id);
265 }
266 
267 const struct got_error *
268 got_repo_cache_tree(struct got_repository *repo, struct got_object_id *id,
269     struct got_tree_object *tree)
270 {
271 #ifndef GOT_NO_OBJ_CACHE
272 	const struct got_error *err = NULL;
273 	err = got_object_cache_add(&repo->treecache, id, tree);
274 	if (err) {
275 		if (err->code == GOT_ERR_OBJ_EXISTS ||
276 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
277 			err = NULL;
278 		return err;
279 	}
280 	tree->refcnt++;
281 #endif
282 	return NULL;
283 }
284 
285 struct got_tree_object *
286 got_repo_get_cached_tree(struct got_repository *repo,
287     struct got_object_id *id)
288 {
289 	return (struct got_tree_object *)got_object_cache_get(
290 	    &repo->treecache, id);
291 }
292 
293 const struct got_error *
294 got_repo_cache_commit(struct got_repository *repo, struct got_object_id *id,
295     struct got_commit_object *commit)
296 {
297 #ifndef GOT_NO_OBJ_CACHE
298 	const struct got_error *err = NULL;
299 	err = got_object_cache_add(&repo->commitcache, id, commit);
300 	if (err) {
301 		if (err->code == GOT_ERR_OBJ_EXISTS ||
302 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
303 			err = NULL;
304 		return err;
305 	}
306 	commit->refcnt++;
307 #endif
308 	return NULL;
309 }
310 
311 struct got_commit_object *
312 got_repo_get_cached_commit(struct got_repository *repo,
313     struct got_object_id *id)
314 {
315 	return (struct got_commit_object *)got_object_cache_get(
316 	    &repo->commitcache, id);
317 }
318 
319 const struct got_error *
320 got_repo_cache_tag(struct got_repository *repo, struct got_object_id *id,
321     struct got_tag_object *tag)
322 {
323 #ifndef GOT_NO_OBJ_CACHE
324 	const struct got_error *err = NULL;
325 	err = got_object_cache_add(&repo->tagcache, id, tag);
326 	if (err) {
327 		if (err->code == GOT_ERR_OBJ_EXISTS ||
328 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
329 			err = NULL;
330 		return err;
331 	}
332 	tag->refcnt++;
333 #endif
334 	return NULL;
335 }
336 
337 struct got_tag_object *
338 got_repo_get_cached_tag(struct got_repository *repo, struct got_object_id *id)
339 {
340 	return (struct got_tag_object *)got_object_cache_get(
341 	    &repo->tagcache, id);
342 }
343 
344 const struct got_error *
345 got_repo_cache_raw_object(struct got_repository *repo, struct got_object_id *id,
346     struct got_raw_object *raw)
347 {
348 #ifndef GOT_NO_OBJ_CACHE
349 	const struct got_error *err = NULL;
350 	err = got_object_cache_add(&repo->rawcache, id, raw);
351 	if (err) {
352 		if (err->code == GOT_ERR_OBJ_EXISTS ||
353 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
354 			err = NULL;
355 		return err;
356 	}
357 	raw->refcnt++;
358 #endif
359 	return NULL;
360 }
361 
362 
363 struct got_raw_object *
364 got_repo_get_cached_raw_object(struct got_repository *repo,
365     struct got_object_id *id)
366 {
367 	return (struct got_raw_object *)got_object_cache_get(&repo->rawcache, id);
368 }
369 
370 
371 static const struct got_error *
372 open_repo(struct got_repository *repo, const char *path)
373 {
374 	const struct got_error *err = NULL;
375 
376 	repo->gitdir_fd = -1;
377 
378 	/* bare git repository? */
379 	repo->path_git_dir = strdup(path);
380 	if (repo->path_git_dir == NULL)
381 		return got_error_from_errno("strdup");
382 	if (is_git_repo(repo)) {
383 		repo->path = strdup(repo->path_git_dir);
384 		if (repo->path == NULL) {
385 			err = got_error_from_errno("strdup");
386 			goto done;
387 		}
388 		repo->gitdir_fd = open(repo->path_git_dir,
389 		    O_DIRECTORY | O_CLOEXEC);
390 		if (repo->gitdir_fd == -1) {
391 			err = got_error_from_errno2("open",
392 			    repo->path_git_dir);
393 			goto done;
394 		}
395 		return NULL;
396 	}
397 
398 	/* git repository with working tree? */
399 	free(repo->path_git_dir);
400 	repo->path_git_dir = NULL;
401 	if (asprintf(&repo->path_git_dir, "%s/%s", path, GOT_GIT_DIR) == -1) {
402 		err = got_error_from_errno("asprintf");
403 		goto done;
404 	}
405 	if (is_git_repo(repo)) {
406 		repo->path = strdup(path);
407 		if (repo->path == NULL) {
408 			err = got_error_from_errno("strdup");
409 			goto done;
410 		}
411 		repo->gitdir_fd = open(repo->path_git_dir,
412 		    O_DIRECTORY | O_CLOEXEC);
413 		if (repo->gitdir_fd == -1) {
414 			err = got_error_from_errno2("open",
415 			    repo->path_git_dir);
416 			goto done;
417 		}
418 		return NULL;
419 	}
420 
421 	err = got_error(GOT_ERR_NOT_GIT_REPO);
422 done:
423 	if (err) {
424 		free(repo->path);
425 		repo->path = NULL;
426 		free(repo->path_git_dir);
427 		repo->path_git_dir = NULL;
428 		if (repo->gitdir_fd != -1)
429 			close(repo->gitdir_fd);
430 		repo->gitdir_fd = -1;
431 
432 	}
433 	return err;
434 }
435 
436 static const struct got_error *
437 parse_gitconfig_file(int *gitconfig_repository_format_version,
438     char **gitconfig_author_name, char **gitconfig_author_email,
439     struct got_remote_repo **remotes, int *nremotes,
440     char **gitconfig_owner, char ***extensions, int *nextensions,
441     const char *gitconfig_path)
442 {
443 	const struct got_error *err = NULL, *child_err = NULL;
444 	int fd = -1;
445 	int imsg_fds[2] = { -1, -1 };
446 	pid_t pid;
447 	struct imsgbuf *ibuf;
448 
449 	*gitconfig_repository_format_version = 0;
450 	if (extensions)
451 		*extensions = NULL;
452 	if (nextensions)
453 		*nextensions = 0;
454 	*gitconfig_author_name = NULL;
455 	*gitconfig_author_email = NULL;
456 	if (remotes)
457 		*remotes = NULL;
458 	if (nremotes)
459 		*nremotes = 0;
460 	if (gitconfig_owner)
461 		*gitconfig_owner = NULL;
462 
463 	fd = open(gitconfig_path, O_RDONLY | O_CLOEXEC);
464 	if (fd == -1) {
465 		if (errno == ENOENT)
466 			return NULL;
467 		return got_error_from_errno2("open", gitconfig_path);
468 	}
469 
470 	ibuf = calloc(1, sizeof(*ibuf));
471 	if (ibuf == NULL) {
472 		err = got_error_from_errno("calloc");
473 		goto done;
474 	}
475 
476 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
477 		err = got_error_from_errno("socketpair");
478 		goto done;
479 	}
480 
481 	pid = fork();
482 	if (pid == -1) {
483 		err = got_error_from_errno("fork");
484 		goto done;
485 	} else if (pid == 0) {
486 		got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_GITCONFIG,
487 		    gitconfig_path);
488 		/* not reached */
489 	}
490 
491 	if (close(imsg_fds[1]) == -1) {
492 		err = got_error_from_errno("close");
493 		goto done;
494 	}
495 	imsg_fds[1] = -1;
496 	imsg_init(ibuf, imsg_fds[0]);
497 
498 	err = got_privsep_send_gitconfig_parse_req(ibuf, fd);
499 	if (err)
500 		goto done;
501 	fd = -1;
502 
503 	err = got_privsep_send_gitconfig_repository_format_version_req(ibuf);
504 	if (err)
505 		goto done;
506 
507 	err = got_privsep_recv_gitconfig_int(
508 	    gitconfig_repository_format_version, ibuf);
509 	if (err)
510 		goto done;
511 
512 	if (extensions && nextensions) {
513 		err = got_privsep_send_gitconfig_repository_extensions_req(
514 		    ibuf);
515 		if (err)
516 			goto done;
517 		err = got_privsep_recv_gitconfig_int(nextensions, ibuf);
518 		if (err)
519 			goto done;
520 		if (*nextensions > 0) {
521 			int i;
522 			*extensions = calloc(*nextensions, sizeof(char *));
523 			if (*extensions == NULL) {
524 				err = got_error_from_errno("calloc");
525 				goto done;
526 			}
527 			for (i = 0; i < *nextensions; i++) {
528 				char *ext;
529 				err = got_privsep_recv_gitconfig_str(&ext,
530 				    ibuf);
531 				if (err)
532 					goto done;
533 				(*extensions)[i] = ext;
534 			}
535 		}
536 	}
537 
538 	err = got_privsep_send_gitconfig_author_name_req(ibuf);
539 	if (err)
540 		goto done;
541 
542 	err = got_privsep_recv_gitconfig_str(gitconfig_author_name, ibuf);
543 	if (err)
544 		goto done;
545 
546 	err = got_privsep_send_gitconfig_author_email_req(ibuf);
547 	if (err)
548 		goto done;
549 
550 	err = got_privsep_recv_gitconfig_str(gitconfig_author_email, ibuf);
551 	if (err)
552 		goto done;
553 
554 	if (remotes && nremotes) {
555 		err = got_privsep_send_gitconfig_remotes_req(ibuf);
556 		if (err)
557 			goto done;
558 
559 		err = got_privsep_recv_gitconfig_remotes(remotes,
560 		    nremotes, ibuf);
561 		if (err)
562 			goto done;
563 	}
564 
565 	if (gitconfig_owner) {
566 		err = got_privsep_send_gitconfig_owner_req(ibuf);
567 		if (err)
568 			goto done;
569 		err = got_privsep_recv_gitconfig_str(gitconfig_owner, ibuf);
570 		if (err)
571 			goto done;
572 	}
573 
574 	err = got_privsep_send_stop(imsg_fds[0]);
575 	child_err = got_privsep_wait_for_child(pid);
576 	if (child_err && err == NULL)
577 		err = child_err;
578 done:
579 	if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL)
580 		err = got_error_from_errno("close");
581 	if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL)
582 		err = got_error_from_errno("close");
583 	if (fd != -1 && close(fd) == -1 && err == NULL)
584 		err = got_error_from_errno2("close", gitconfig_path);
585 	free(ibuf);
586 	return err;
587 }
588 
589 static const struct got_error *
590 read_gitconfig(struct got_repository *repo, const char *global_gitconfig_path)
591 {
592 	const struct got_error *err = NULL;
593 	char *repo_gitconfig_path = NULL;
594 
595 	if (global_gitconfig_path) {
596 		/* Read settings from ~/.gitconfig. */
597 		int dummy_repo_version;
598 		err = parse_gitconfig_file(&dummy_repo_version,
599 		    &repo->global_gitconfig_author_name,
600 		    &repo->global_gitconfig_author_email,
601 		    NULL, NULL, NULL, NULL, NULL, global_gitconfig_path);
602 		if (err)
603 			return err;
604 	}
605 
606 	/* Read repository's .git/config file. */
607 	repo_gitconfig_path = got_repo_get_path_gitconfig(repo);
608 	if (repo_gitconfig_path == NULL)
609 		return got_error_from_errno("got_repo_get_path_gitconfig");
610 
611 	err = parse_gitconfig_file(&repo->gitconfig_repository_format_version,
612 	    &repo->gitconfig_author_name, &repo->gitconfig_author_email,
613 	    &repo->gitconfig_remotes, &repo->ngitconfig_remotes,
614 	    &repo->gitconfig_owner, &repo->extensions, &repo->nextensions,
615 	    repo_gitconfig_path);
616 	if (err)
617 		goto done;
618 done:
619 	free(repo_gitconfig_path);
620 	return err;
621 }
622 
623 static const struct got_error *
624 read_gotconfig(struct got_repository *repo)
625 {
626 	const struct got_error *err = NULL;
627 	char *gotconfig_path;
628 
629 	gotconfig_path = got_repo_get_path_gotconfig(repo);
630 	if (gotconfig_path == NULL)
631 		return got_error_from_errno("got_repo_get_path_gotconfig");
632 
633 	err = got_gotconfig_read(&repo->gotconfig, gotconfig_path);
634 	free(gotconfig_path);
635 	return err;
636 }
637 
638 /* Supported repository format extensions. */
639 static const char *repo_extensions[] = {
640 	"noop",			/* Got supports repository format version 1. */
641 	"preciousObjects",	/* Supported by gotadmin cleanup. */
642 	"worktreeConfig",	/* Got does not care about Git work trees. */
643 };
644 
645 const struct got_error *
646 got_repo_open(struct got_repository **repop, const char *path,
647     const char *global_gitconfig_path)
648 {
649 	struct got_repository *repo = NULL;
650 	const struct got_error *err = NULL;
651 	char *repo_path = NULL;
652 	size_t i;
653 	struct rlimit rl;
654 
655 	*repop = NULL;
656 
657 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
658 		return got_error_from_errno("getrlimit");
659 
660 	repo = calloc(1, sizeof(*repo));
661 	if (repo == NULL) {
662 		err = got_error_from_errno("calloc");
663 		goto done;
664 	}
665 
666 	RB_INIT(&repo->packidx_bloom_filters);
667 
668 	for (i = 0; i < nitems(repo->privsep_children); i++) {
669 		memset(&repo->privsep_children[i], 0,
670 		    sizeof(repo->privsep_children[0]));
671 		repo->privsep_children[i].imsg_fd = -1;
672 	}
673 
674 	err = got_object_cache_init(&repo->objcache,
675 	    GOT_OBJECT_CACHE_TYPE_OBJ);
676 	if (err)
677 		goto done;
678 	err = got_object_cache_init(&repo->treecache,
679 	    GOT_OBJECT_CACHE_TYPE_TREE);
680 	if (err)
681 		goto done;
682 	err = got_object_cache_init(&repo->commitcache,
683 	    GOT_OBJECT_CACHE_TYPE_COMMIT);
684 	if (err)
685 		goto done;
686 	err = got_object_cache_init(&repo->tagcache,
687 	    GOT_OBJECT_CACHE_TYPE_TAG);
688 	if (err)
689 		goto done;
690 	err = got_object_cache_init(&repo->rawcache,
691 	    GOT_OBJECT_CACHE_TYPE_RAW);
692 	if (err)
693 		goto done;
694 
695 	repo->pack_cache_size = GOT_PACK_CACHE_SIZE;
696 	if (repo->pack_cache_size > rl.rlim_cur / 8)
697 		repo->pack_cache_size = rl.rlim_cur / 8;
698 
699 	repo_path = realpath(path, NULL);
700 	if (repo_path == NULL) {
701 		err = got_error_from_errno2("realpath", path);
702 		goto done;
703 	}
704 
705 	for (;;) {
706 		char *parent_path;
707 
708 		err = open_repo(repo, repo_path);
709 		if (err == NULL)
710 			break;
711 		if (err->code != GOT_ERR_NOT_GIT_REPO)
712 			goto done;
713 		if (repo_path[0] == '/' && repo_path[1] == '\0') {
714 			err = got_error(GOT_ERR_NOT_GIT_REPO);
715 			goto done;
716 		}
717 		err = got_path_dirname(&parent_path, repo_path);
718 		if (err)
719 			goto done;
720 		free(repo_path);
721 		repo_path = parent_path;
722 	}
723 
724 	err = read_gotconfig(repo);
725 	if (err)
726 		goto done;
727 
728 	err = read_gitconfig(repo, global_gitconfig_path);
729 	if (err)
730 		goto done;
731 	if (repo->gitconfig_repository_format_version != 0)
732 		err = got_error_path(path, GOT_ERR_GIT_REPO_FORMAT);
733 	for (i = 0; i < repo->nextensions; i++) {
734 		char *ext = repo->extensions[i];
735 		int j, supported = 0;
736 		for (j = 0; j < nitems(repo_extensions); j++) {
737 			if (strcmp(ext, repo_extensions[j]) == 0) {
738 				supported = 1;
739 				break;
740 			}
741 		}
742 		if (!supported) {
743 			err = got_error_path(ext, GOT_ERR_GIT_REPO_EXT);
744 			goto done;
745 		}
746 	}
747 done:
748 	if (err)
749 		got_repo_close(repo);
750 	else
751 		*repop = repo;
752 	free(repo_path);
753 	return err;
754 }
755 
756 const struct got_error *
757 got_repo_close(struct got_repository *repo)
758 {
759 	const struct got_error *err = NULL, *child_err;
760 	struct got_packidx_bloom_filter *bf;
761 	size_t i;
762 
763 	for (i = 0; i < repo->pack_cache_size; i++) {
764 		if (repo->packidx_cache[i] == NULL)
765 			break;
766 		got_packidx_close(repo->packidx_cache[i]);
767 	}
768 
769 	while ((bf = RB_MIN(got_packidx_bloom_filter_tree,
770 	    &repo->packidx_bloom_filters))) {
771 		RB_REMOVE(got_packidx_bloom_filter_tree,
772 		    &repo->packidx_bloom_filters, bf);
773 		free(bf->bloom);
774 		free(bf);
775 	}
776 
777 	for (i = 0; i < repo->pack_cache_size; i++) {
778 		if (repo->packs[i].path_packfile == NULL)
779 			break;
780 		got_pack_close(&repo->packs[i]);
781 	}
782 
783 	free(repo->path);
784 	free(repo->path_git_dir);
785 
786 	got_object_cache_close(&repo->objcache);
787 	got_object_cache_close(&repo->treecache);
788 	got_object_cache_close(&repo->commitcache);
789 	got_object_cache_close(&repo->tagcache);
790 	got_object_cache_close(&repo->rawcache);
791 
792 	for (i = 0; i < nitems(repo->privsep_children); i++) {
793 		if (repo->privsep_children[i].imsg_fd == -1)
794 			continue;
795 		imsg_clear(repo->privsep_children[i].ibuf);
796 		free(repo->privsep_children[i].ibuf);
797 		err = got_privsep_send_stop(repo->privsep_children[i].imsg_fd);
798 		child_err = got_privsep_wait_for_child(
799 		    repo->privsep_children[i].pid);
800 		if (child_err && err == NULL)
801 			err = child_err;
802 		if (close(repo->privsep_children[i].imsg_fd) == -1 &&
803 		    err == NULL)
804 			err = got_error_from_errno("close");
805 	}
806 
807 	if (repo->gitdir_fd != -1 && close(repo->gitdir_fd) == -1 &&
808 	    err == NULL)
809 		err = got_error_from_errno("close");
810 
811 	if (repo->gotconfig)
812 		got_gotconfig_free(repo->gotconfig);
813 	free(repo->gitconfig_author_name);
814 	free(repo->gitconfig_author_email);
815 	for (i = 0; i < repo->ngitconfig_remotes; i++)
816 		got_repo_free_remote_repo_data(&repo->gitconfig_remotes[i]);
817 	free(repo->gitconfig_remotes);
818 	for (i = 0; i < repo->nextensions; i++)
819 		free(repo->extensions[i]);
820 	free(repo->extensions);
821 	free(repo);
822 
823 	return err;
824 }
825 
826 void
827 got_repo_free_remote_repo_data(struct got_remote_repo *repo)
828 {
829 	int i;
830 
831 	free(repo->name);
832 	repo->name = NULL;
833 	free(repo->fetch_url);
834 	repo->fetch_url = NULL;
835 	free(repo->send_url);
836 	repo->send_url = NULL;
837 	for (i = 0; i < repo->nfetch_branches; i++)
838 		free(repo->fetch_branches[i]);
839 	free(repo->fetch_branches);
840 	repo->fetch_branches = NULL;
841 	repo->nfetch_branches = 0;
842 	for (i = 0; i < repo->nsend_branches; i++)
843 		free(repo->send_branches[i]);
844 	free(repo->send_branches);
845 	repo->send_branches = NULL;
846 	repo->nsend_branches = 0;
847 }
848 
849 const struct got_error *
850 got_repo_map_path(char **in_repo_path, struct got_repository *repo,
851     const char *input_path)
852 {
853 	const struct got_error *err = NULL;
854 	const char *repo_abspath = NULL;
855 	size_t repolen, len;
856 	char *canonpath, *path = NULL;
857 
858 	*in_repo_path = NULL;
859 
860 	canonpath = strdup(input_path);
861 	if (canonpath == NULL) {
862 		err = got_error_from_errno("strdup");
863 		goto done;
864 	}
865 	err = got_canonpath(input_path, canonpath, strlen(canonpath) + 1);
866 	if (err)
867 		goto done;
868 
869 	repo_abspath = got_repo_get_path(repo);
870 
871 	if (canonpath[0] == '\0') {
872 		path = strdup(canonpath);
873 		if (path == NULL) {
874 			err = got_error_from_errno("strdup");
875 			goto done;
876 		}
877 	} else {
878 		path = realpath(canonpath, NULL);
879 		if (path == NULL) {
880 			if (errno != ENOENT) {
881 				err = got_error_from_errno2("realpath",
882 				    canonpath);
883 				goto done;
884 			}
885 			/*
886 			 * Path is not on disk.
887 			 * Assume it is already relative to repository root.
888 			 */
889 			path = strdup(canonpath);
890 			if (path == NULL) {
891 				err = got_error_from_errno("strdup");
892 				goto done;
893 			}
894 		}
895 
896 		repolen = strlen(repo_abspath);
897 		len = strlen(path);
898 
899 
900 		if (strcmp(path, repo_abspath) == 0) {
901 			free(path);
902 			path = strdup("");
903 			if (path == NULL) {
904 				err = got_error_from_errno("strdup");
905 				goto done;
906 			}
907 		} else if (len > repolen &&
908 		    got_path_is_child(path, repo_abspath, repolen)) {
909 			/* Matched an on-disk path inside repository. */
910 			if (got_repo_is_bare(repo)) {
911 				/*
912 				 * Matched an on-disk path inside repository
913 				 * database. Treat input as repository-relative.
914 				 */
915 				free(path);
916 				path = canonpath;
917 				canonpath = NULL;
918 			} else {
919 				char *child;
920 				/* Strip common prefix with repository path. */
921 				err = got_path_skip_common_ancestor(&child,
922 				    repo_abspath, path);
923 				if (err)
924 					goto done;
925 				free(path);
926 				path = child;
927 			}
928 		} else {
929 			/*
930 			 * Matched unrelated on-disk path.
931 			 * Treat input as repository-relative.
932 			 */
933 			free(path);
934 			path = canonpath;
935 			canonpath = NULL;
936 		}
937 	}
938 
939 	/* Make in-repository path absolute */
940 	if (path[0] != '/') {
941 		char *abspath;
942 		if (asprintf(&abspath, "/%s", path) == -1) {
943 			err = got_error_from_errno("asprintf");
944 			goto done;
945 		}
946 		free(path);
947 		path = abspath;
948 	}
949 
950 done:
951 	free(canonpath);
952 	if (err)
953 		free(path);
954 	else
955 		*in_repo_path = path;
956 	return err;
957 }
958 
959 static const struct got_error *
960 cache_packidx(struct got_repository *repo, struct got_packidx *packidx,
961     const char *path_packidx)
962 {
963 	const struct got_error *err = NULL;
964 	size_t i;
965 
966 	for (i = 0; i < repo->pack_cache_size; i++) {
967 		if (repo->packidx_cache[i] == NULL)
968 			break;
969 		if (strcmp(repo->packidx_cache[i]->path_packidx,
970 		    path_packidx) == 0) {
971 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
972 		}
973 	}
974 	if (i == repo->pack_cache_size) {
975 		i = repo->pack_cache_size - 1;
976 		err = got_packidx_close(repo->packidx_cache[i]);
977 		if (err)
978 			return err;
979 	}
980 
981 	repo->packidx_cache[i] = packidx;
982 
983 	return NULL;
984 }
985 
986 int
987 got_repo_is_packidx_filename(const char *name, size_t len)
988 {
989 	if (len != GOT_PACKIDX_NAMELEN)
990 		return 0;
991 
992 	if (strncmp(name, GOT_PACK_PREFIX, strlen(GOT_PACK_PREFIX)) != 0)
993 		return 0;
994 
995 	if (strcmp(name + strlen(GOT_PACK_PREFIX) +
996 	    SHA1_DIGEST_STRING_LENGTH - 1, GOT_PACKIDX_SUFFIX) != 0)
997 		return 0;
998 
999 	return 1;
1000 }
1001 
1002 static struct got_packidx_bloom_filter *
1003 get_packidx_bloom_filter(struct got_repository *repo,
1004     const char *path, size_t path_len)
1005 {
1006 	struct got_packidx_bloom_filter key;
1007 
1008 	if (strlcpy(key.path, path, sizeof(key.path)) >= sizeof(key.path))
1009 		return NULL; /* XXX */
1010 	key.path_len = path_len;
1011 
1012 	return RB_FIND(got_packidx_bloom_filter_tree,
1013 	    &repo->packidx_bloom_filters, &key);
1014 }
1015 
1016 int
1017 got_repo_check_packidx_bloom_filter(struct got_repository *repo,
1018     const char *path_packidx, struct got_object_id *id)
1019 {
1020 	struct got_packidx_bloom_filter *bf;
1021 
1022 	bf = get_packidx_bloom_filter(repo, path_packidx, strlen(path_packidx));
1023 	if (bf)
1024 		return bloom_check(bf->bloom, id->sha1, sizeof(id->sha1));
1025 
1026 	/* No bloom filter means this pack index must be searched. */
1027 	return 1;
1028 }
1029 
1030 static const struct got_error *
1031 add_packidx_bloom_filter(struct got_repository *repo,
1032     struct got_packidx *packidx, const char *path_packidx)
1033 {
1034 	int i, nobjects = be32toh(packidx->hdr.fanout_table[0xff]);
1035 	struct got_packidx_bloom_filter *bf;
1036 	size_t len;
1037 
1038 	/*
1039 	 * Don't use bloom filters for very large pack index files.
1040 	 * Large pack files will contain a relatively large fraction
1041 	 * of our objects so we will likely need to visit them anyway.
1042 	 * The more objects a pack file contains the higher the probability
1043 	 * of a false-positive match from the bloom filter. And reading
1044 	 * all object IDs from a large pack index file can be expensive.
1045 	 */
1046 	if (nobjects > 100000) /* cut-off at about 2MB, at 20 bytes per ID */
1047 		return NULL;
1048 
1049 	/* Do we already have a filter for this pack index? */
1050 	if (get_packidx_bloom_filter(repo, path_packidx,
1051 	    strlen(path_packidx)) != NULL)
1052 		return NULL;
1053 
1054 	bf = calloc(1, sizeof(*bf));
1055 	if (bf == NULL)
1056 		return got_error_from_errno("calloc");
1057 	bf->bloom = calloc(1, sizeof(*bf->bloom));
1058 	if (bf->bloom == NULL) {
1059 		free(bf);
1060 		return got_error_from_errno("calloc");
1061 	}
1062 	
1063 	len = strlcpy(bf->path, path_packidx, sizeof(bf->path));
1064 	if (len >= sizeof(bf->path)) {
1065 		free(bf->bloom);
1066 		free(bf);
1067 		return got_error(GOT_ERR_NO_SPACE);
1068 	}
1069 	bf->path_len = len;
1070 
1071 	/* Minimum size supported by our bloom filter is 1000 entries. */
1072 	bloom_init(bf->bloom, nobjects < 1000 ? 1000 : nobjects, 0.1);
1073 	for (i = 0; i < nobjects; i++) {
1074 		struct got_packidx_object_id *id;
1075 		id = &packidx->hdr.sorted_ids[i];
1076 		bloom_add(bf->bloom, id->sha1, sizeof(id->sha1));
1077 	}
1078 
1079 	RB_INSERT(got_packidx_bloom_filter_tree,
1080 	    &repo->packidx_bloom_filters, bf);
1081 	return NULL;
1082 }
1083 
1084 const struct got_error *
1085 got_repo_search_packidx(struct got_packidx **packidx, int *idx,
1086     struct got_repository *repo, struct got_object_id *id)
1087 {
1088 	const struct got_error *err;
1089 	DIR *packdir = NULL;
1090 	struct dirent *dent;
1091 	char *path_packidx;
1092 	size_t i;
1093 	int packdir_fd;
1094 
1095 	/* Search pack index cache. */
1096 	for (i = 0; i < repo->pack_cache_size; i++) {
1097 		if (repo->packidx_cache[i] == NULL)
1098 			break;
1099 		if (!got_repo_check_packidx_bloom_filter(repo,
1100 		    repo->packidx_cache[i]->path_packidx, id))
1101 			continue; /* object will not be found in this index */
1102 		*idx = got_packidx_get_object_idx(repo->packidx_cache[i], id);
1103 		if (*idx != -1) {
1104 			*packidx = repo->packidx_cache[i];
1105 			/*
1106 			 * Move this cache entry to the front. Repeatedly
1107 			 * searching a wrong pack index can be expensive.
1108 			 */
1109 			if (i > 0) {
1110 				memmove(&repo->packidx_cache[1],
1111 				    &repo->packidx_cache[0],
1112 				    i * sizeof(repo->packidx_cache[0]));
1113 				repo->packidx_cache[0] = *packidx;
1114 			}
1115 			return NULL;
1116 		}
1117 	}
1118 	/* No luck. Search the filesystem. */
1119 
1120 	packdir_fd = openat(got_repo_get_fd(repo),
1121 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY | O_CLOEXEC);
1122 	if (packdir_fd == -1) {
1123 		if (errno == ENOENT)
1124 			err = got_error_no_obj(id);
1125 		else
1126 			err = got_error_from_errno_fmt("openat: %s/%s",
1127 			    got_repo_get_path_git_dir(repo),
1128 			    GOT_OBJECTS_PACK_DIR);
1129 		goto done;
1130 	}
1131 
1132 	packdir = fdopendir(packdir_fd);
1133 	if (packdir == NULL) {
1134 		err = got_error_from_errno("fdopendir");
1135 		goto done;
1136 	}
1137 
1138 	while ((dent = readdir(packdir)) != NULL) {
1139 		int is_cached = 0;
1140 
1141 		if (!got_repo_is_packidx_filename(dent->d_name,
1142 		    strlen(dent->d_name)))
1143 			continue;
1144 
1145 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1146 		    dent->d_name) == -1) {
1147 			err = got_error_from_errno("asprintf");
1148 			goto done;
1149 		}
1150 
1151 		if (!got_repo_check_packidx_bloom_filter(repo,
1152 		    path_packidx, id)) {
1153 			free(path_packidx);
1154 			continue; /* object will not be found in this index */
1155 		}
1156 
1157 		for (i = 0; i < repo->pack_cache_size; i++) {
1158 			if (repo->packidx_cache[i] == NULL)
1159 				break;
1160 			if (strcmp(repo->packidx_cache[i]->path_packidx,
1161 			    path_packidx) == 0) {
1162 				is_cached = 1;
1163 				break;
1164 			}
1165 		}
1166 		if (is_cached) {
1167 			free(path_packidx);
1168 			continue; /* already searched */
1169 		}
1170 
1171 		err = got_packidx_open(packidx, got_repo_get_fd(repo),
1172 		    path_packidx, 0);
1173 		if (err) {
1174 			free(path_packidx);
1175 			goto done;
1176 		}
1177 
1178 		err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1179 		if (err) {
1180 			free(path_packidx);
1181 			goto done;
1182 		}
1183 
1184 		err = cache_packidx(repo, *packidx, path_packidx);
1185 		free(path_packidx);
1186 		if (err)
1187 			goto done;
1188 
1189 		*idx = got_packidx_get_object_idx(*packidx, id);
1190 		if (*idx != -1) {
1191 			err = NULL; /* found the object */
1192 			goto done;
1193 		}
1194 	}
1195 
1196 	err = got_error_no_obj(id);
1197 done:
1198 	if (packdir && closedir(packdir) != 0 && err == NULL)
1199 		err = got_error_from_errno("closedir");
1200 	return err;
1201 }
1202 
1203 const struct got_error *
1204 got_repo_list_packidx(struct got_pathlist_head *packidx_paths,
1205     struct got_repository *repo)
1206 {
1207 	const struct got_error *err = NULL;
1208 	DIR *packdir = NULL;
1209 	struct dirent *dent;
1210 	char *path_packidx = NULL;
1211 	int packdir_fd;
1212 
1213 	packdir_fd = openat(got_repo_get_fd(repo),
1214 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY | O_CLOEXEC);
1215 	if (packdir_fd == -1) {
1216 		return got_error_from_errno_fmt("openat: %s/%s",
1217 		    got_repo_get_path_git_dir(repo),
1218 		    GOT_OBJECTS_PACK_DIR);
1219 	}
1220 
1221 	packdir = fdopendir(packdir_fd);
1222 	if (packdir == NULL) {
1223 		err = got_error_from_errno("fdopendir");
1224 		goto done;
1225 	}
1226 
1227 	while ((dent = readdir(packdir)) != NULL) {
1228 		if (!got_repo_is_packidx_filename(dent->d_name,
1229 		    strlen(dent->d_name)))
1230 			continue;
1231 
1232 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1233 		    dent->d_name) == -1) {
1234 			err = got_error_from_errno("asprintf");
1235 			path_packidx = NULL;
1236 			break;
1237 		}
1238 
1239 		err = got_pathlist_append(packidx_paths, path_packidx, NULL);
1240 		if (err)
1241 			break;
1242 	}
1243 done:
1244 	if (err)
1245 		free(path_packidx);
1246 	if (packdir && closedir(packdir) != 0 && err == NULL)
1247 		err = got_error_from_errno("closedir");
1248 	return err;
1249 }
1250 
1251 const struct got_error *
1252 got_repo_get_packidx(struct got_packidx **packidx, const char *path_packidx,
1253     struct got_repository *repo)
1254 {
1255 	const struct got_error *err;
1256 	size_t i;
1257 
1258 	*packidx = NULL;
1259 
1260 	/* Search pack index cache. */
1261 	for (i = 0; i < repo->pack_cache_size; i++) {
1262 		if (repo->packidx_cache[i] == NULL)
1263 			break;
1264 		if (strcmp(repo->packidx_cache[i]->path_packidx,
1265 		    path_packidx) == 0) {
1266 			*packidx = repo->packidx_cache[i];
1267 			return NULL;
1268 		}
1269 	}
1270 	/* No luck. Search the filesystem. */
1271 
1272 	err = got_packidx_open(packidx, got_repo_get_fd(repo),
1273 	    path_packidx, 0);
1274 	if (err)
1275 		return err;
1276 
1277 	err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1278 	if (err)
1279 		goto done;
1280 
1281 	err = cache_packidx(repo, *packidx, path_packidx);
1282 done:
1283 	if (err) {
1284 		got_packidx_close(*packidx);
1285 		*packidx = NULL;
1286 	}
1287 	return err;
1288 }
1289 
1290 static const struct got_error *
1291 read_packfile_hdr(int fd, struct got_packidx *packidx)
1292 {
1293 	const struct got_error *err = NULL;
1294 	uint32_t totobj = be32toh(packidx->hdr.fanout_table[0xff]);
1295 	struct got_packfile_hdr hdr;
1296 	ssize_t n;
1297 
1298 	n = read(fd, &hdr, sizeof(hdr));
1299 	if (n < 0)
1300 		return got_error_from_errno("read");
1301 	if (n != sizeof(hdr))
1302 		return got_error(GOT_ERR_BAD_PACKFILE);
1303 
1304 	if (be32toh(hdr.signature) != GOT_PACKFILE_SIGNATURE ||
1305 	    be32toh(hdr.version) != GOT_PACKFILE_VERSION ||
1306 	    be32toh(hdr.nobjects) != totobj)
1307 		err = got_error(GOT_ERR_BAD_PACKFILE);
1308 
1309 	return err;
1310 }
1311 
1312 static const struct got_error *
1313 open_packfile(int *fd, struct got_repository *repo,
1314     const char *relpath, struct got_packidx *packidx)
1315 {
1316 	const struct got_error *err = NULL;
1317 
1318 	*fd = openat(got_repo_get_fd(repo), relpath,
1319 	    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
1320 	if (*fd == -1)
1321 		return got_error_from_errno_fmt("openat: %s/%s",
1322 		    got_repo_get_path_git_dir(repo), relpath);
1323 
1324 	if (packidx) {
1325 		err = read_packfile_hdr(*fd, packidx);
1326 		if (err) {
1327 			close(*fd);
1328 			*fd = -1;
1329 		}
1330 	}
1331 
1332 	return err;
1333 }
1334 
1335 const struct got_error *
1336 got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1337     const char *path_packfile, struct got_packidx *packidx)
1338 {
1339 	const struct got_error *err = NULL;
1340 	struct got_pack *pack = NULL;
1341 	struct stat sb;
1342 	size_t i;
1343 
1344 	if (packp)
1345 		*packp = NULL;
1346 
1347 	for (i = 0; i < repo->pack_cache_size; i++) {
1348 		pack = &repo->packs[i];
1349 		if (pack->path_packfile == NULL)
1350 			break;
1351 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1352 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
1353 	}
1354 
1355 	if (i == repo->pack_cache_size) {
1356 		err = got_pack_close(&repo->packs[i - 1]);
1357 		if (err)
1358 			return err;
1359 		memmove(&repo->packs[1], &repo->packs[0],
1360 		    sizeof(repo->packs) - sizeof(repo->packs[0]));
1361 		i = 0;
1362 	}
1363 
1364 	pack = &repo->packs[i];
1365 
1366 	pack->path_packfile = strdup(path_packfile);
1367 	if (pack->path_packfile == NULL) {
1368 		err = got_error_from_errno("strdup");
1369 		goto done;
1370 	}
1371 
1372 	err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1373 	if (err)
1374 		goto done;
1375 
1376 	if (fstat(pack->fd, &sb) != 0) {
1377 		err = got_error_from_errno("fstat");
1378 		goto done;
1379 	}
1380 	pack->filesize = sb.st_size;
1381 
1382 	pack->privsep_child = NULL;
1383 
1384 #ifndef GOT_PACK_NO_MMAP
1385 	pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1386 	    pack->fd, 0);
1387 	if (pack->map == MAP_FAILED) {
1388 		if (errno != ENOMEM) {
1389 			err = got_error_from_errno("mmap");
1390 			goto done;
1391 		}
1392 		pack->map = NULL; /* fall back to read(2) */
1393 	}
1394 #endif
1395 done:
1396 	if (err) {
1397 		if (pack) {
1398 			free(pack->path_packfile);
1399 			memset(pack, 0, sizeof(*pack));
1400 		}
1401 	} else if (packp)
1402 		*packp = pack;
1403 	return err;
1404 }
1405 
1406 struct got_pack *
1407 got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1408 {
1409 	struct got_pack *pack = NULL;
1410 	size_t i;
1411 
1412 	for (i = 0; i < repo->pack_cache_size; i++) {
1413 		pack = &repo->packs[i];
1414 		if (pack->path_packfile == NULL)
1415 			break;
1416 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1417 			return pack;
1418 	}
1419 
1420 	return NULL;
1421 }
1422 
1423 const struct got_error *
1424 got_repo_init(const char *repo_path)
1425 {
1426 	const struct got_error *err = NULL;
1427 	const char *dirnames[] = {
1428 		GOT_OBJECTS_DIR,
1429 		GOT_OBJECTS_PACK_DIR,
1430 		GOT_REFS_DIR,
1431 	};
1432 	const char *description_str = "Unnamed repository; "
1433 	    "edit this file 'description' to name the repository.";
1434 	const char *headref_str = "ref: refs/heads/main";
1435 	const char *gitconfig_str = "[core]\n"
1436 	    "\trepositoryformatversion = 0\n"
1437 	    "\tfilemode = true\n"
1438 	    "\tbare = true\n";
1439 	char *path;
1440 	size_t i;
1441 
1442 	if (!got_path_dir_is_empty(repo_path))
1443 		return got_error(GOT_ERR_DIR_NOT_EMPTY);
1444 
1445 	for (i = 0; i < nitems(dirnames); i++) {
1446 		if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1447 			return got_error_from_errno("asprintf");
1448 		}
1449 		err = got_path_mkdir(path);
1450 		free(path);
1451 		if (err)
1452 			return err;
1453 	}
1454 
1455 	if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1456 		return got_error_from_errno("asprintf");
1457 	err = got_path_create_file(path, description_str);
1458 	free(path);
1459 	if (err)
1460 		return err;
1461 
1462 	if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE) == -1)
1463 		return got_error_from_errno("asprintf");
1464 	err = got_path_create_file(path, headref_str);
1465 	free(path);
1466 	if (err)
1467 		return err;
1468 
1469 	if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1470 		return got_error_from_errno("asprintf");
1471 	err = got_path_create_file(path, gitconfig_str);
1472 	free(path);
1473 	if (err)
1474 		return err;
1475 
1476 	return NULL;
1477 }
1478 
1479 static const struct got_error *
1480 match_packed_object(struct got_object_id **unique_id,
1481     struct got_repository *repo, const char *id_str_prefix, int obj_type)
1482 {
1483 	const struct got_error *err = NULL;
1484 	DIR *packdir = NULL;
1485 	struct dirent *dent;
1486 	char *path_packidx;
1487 	struct got_object_id_queue matched_ids;
1488 	int packdir_fd;
1489 
1490 	STAILQ_INIT(&matched_ids);
1491 
1492 	packdir_fd = openat(got_repo_get_fd(repo),
1493 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY | O_CLOEXEC);
1494 	if (packdir_fd == -1) {
1495 		if (errno != ENOENT) {
1496 			err = got_error_from_errno2("openat",
1497 			    GOT_OBJECTS_PACK_DIR);
1498 		}
1499 		goto done;
1500 	}
1501 
1502 	packdir = fdopendir(packdir_fd);
1503 	if (packdir == NULL) {
1504 		err = got_error_from_errno("fdopendir");
1505 		goto done;
1506 	}
1507 
1508 	while ((dent = readdir(packdir)) != NULL) {
1509 		struct got_packidx *packidx;
1510 		struct got_object_qid *qid;
1511 
1512 		if (!got_repo_is_packidx_filename(dent->d_name,
1513 		    strlen(dent->d_name)))
1514 			continue;
1515 
1516 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1517 		    dent->d_name) == -1) {
1518 			err = got_error_from_errno("strdup");
1519 			break;
1520 		}
1521 
1522 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1523 		    path_packidx, 0);
1524 		free(path_packidx);
1525 		if (err)
1526 			break;
1527 
1528 		err = got_packidx_match_id_str_prefix(&matched_ids,
1529 		    packidx, id_str_prefix);
1530 		if (err) {
1531 			got_packidx_close(packidx);
1532 			break;
1533 		}
1534 		err = got_packidx_close(packidx);
1535 		if (err)
1536 			break;
1537 
1538 		STAILQ_FOREACH(qid, &matched_ids, entry) {
1539 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1540 				int matched_type;
1541 				err = got_object_get_type(&matched_type, repo,
1542 				    qid->id);
1543 				if (err)
1544 					goto done;
1545 				if (matched_type != obj_type)
1546 					continue;
1547 			}
1548 			if (*unique_id == NULL) {
1549 				*unique_id = got_object_id_dup(qid->id);
1550 				if (*unique_id == NULL) {
1551 					err = got_error_from_errno("malloc");
1552 					goto done;
1553 				}
1554 			} else {
1555 				if (got_object_id_cmp(*unique_id, qid->id) == 0)
1556 					continue; /* packed multiple times */
1557 				err = got_error(GOT_ERR_AMBIGUOUS_ID);
1558 				goto done;
1559 			}
1560 		}
1561 	}
1562 done:
1563 	got_object_id_queue_free(&matched_ids);
1564 	if (packdir && closedir(packdir) != 0 && err == NULL)
1565 		err = got_error_from_errno("closedir");
1566 	if (err) {
1567 		free(*unique_id);
1568 		*unique_id = NULL;
1569 	}
1570 	return err;
1571 }
1572 
1573 static const struct got_error *
1574 match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1575     const char *object_dir, const char *id_str_prefix, int obj_type,
1576     struct got_repository *repo)
1577 {
1578 	const struct got_error *err = NULL;
1579 	char *path;
1580 	DIR *dir = NULL;
1581 	struct dirent *dent;
1582 	struct got_object_id id;
1583 
1584 	if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1585 		err = got_error_from_errno("asprintf");
1586 		goto done;
1587 	}
1588 
1589 	dir = opendir(path);
1590 	if (dir == NULL) {
1591 		if (errno == ENOENT) {
1592 			err = NULL;
1593 			goto done;
1594 		}
1595 		err = got_error_from_errno2("opendir", path);
1596 		goto done;
1597 	}
1598 	while ((dent = readdir(dir)) != NULL) {
1599 		char *id_str;
1600 		int cmp;
1601 
1602 		if (strcmp(dent->d_name, ".") == 0 ||
1603 		    strcmp(dent->d_name, "..") == 0)
1604 			continue;
1605 
1606 		if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1607 			err = got_error_from_errno("asprintf");
1608 			goto done;
1609 		}
1610 
1611 		if (!got_parse_sha1_digest(id.sha1, id_str))
1612 			continue;
1613 
1614 		/*
1615 		 * Directory entries do not necessarily appear in
1616 		 * sorted order, so we must iterate over all of them.
1617 		 */
1618 		cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1619 		if (cmp != 0) {
1620 			free(id_str);
1621 			continue;
1622 		}
1623 
1624 		if (*unique_id == NULL) {
1625 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1626 				int matched_type;
1627 				err = got_object_get_type(&matched_type, repo,
1628 				    &id);
1629 				if (err)
1630 					goto done;
1631 				if (matched_type != obj_type)
1632 					continue;
1633 			}
1634 			*unique_id = got_object_id_dup(&id);
1635 			if (*unique_id == NULL) {
1636 				err = got_error_from_errno("got_object_id_dup");
1637 				free(id_str);
1638 				goto done;
1639 			}
1640 		} else {
1641 			if (got_object_id_cmp(*unique_id, &id) == 0)
1642 				continue; /* both packed and loose */
1643 			err = got_error(GOT_ERR_AMBIGUOUS_ID);
1644 			free(id_str);
1645 			goto done;
1646 		}
1647 	}
1648 done:
1649 	if (dir && closedir(dir) != 0 && err == NULL)
1650 		err = got_error_from_errno("closedir");
1651 	if (err) {
1652 		free(*unique_id);
1653 		*unique_id = NULL;
1654 	}
1655 	free(path);
1656 	return err;
1657 }
1658 
1659 const struct got_error *
1660 got_repo_match_object_id_prefix(struct got_object_id **id,
1661     const char *id_str_prefix, int obj_type, struct got_repository *repo)
1662 {
1663 	const struct got_error *err = NULL;
1664 	char *path_objects = got_repo_get_path_objects(repo);
1665 	char *object_dir = NULL;
1666 	size_t len;
1667 	int i;
1668 
1669 	*id = NULL;
1670 
1671 	len = strlen(id_str_prefix);
1672 	if (len > SHA1_DIGEST_STRING_LENGTH - 1)
1673 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1674 
1675 	for (i = 0; i < len; i++) {
1676 		if (isxdigit((unsigned char)id_str_prefix[i]))
1677 			continue;
1678 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1679 	}
1680 
1681 	if (len >= 2) {
1682 		err = match_packed_object(id, repo, id_str_prefix, obj_type);
1683 		if (err)
1684 			goto done;
1685 		object_dir = strndup(id_str_prefix, 2);
1686 		if (object_dir == NULL) {
1687 			err = got_error_from_errno("strdup");
1688 			goto done;
1689 		}
1690 		err = match_loose_object(id, path_objects, object_dir,
1691 		    id_str_prefix, obj_type, repo);
1692 	} else if (len == 1) {
1693 		int i;
1694 		for (i = 0; i < 0xf; i++) {
1695 			if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1696 			    == -1) {
1697 				err = got_error_from_errno("asprintf");
1698 				goto done;
1699 			}
1700 			err = match_packed_object(id, repo, object_dir,
1701 			    obj_type);
1702 			if (err)
1703 				goto done;
1704 			err = match_loose_object(id, path_objects, object_dir,
1705 			    id_str_prefix, obj_type, repo);
1706 			if (err)
1707 				goto done;
1708 		}
1709 	} else {
1710 		err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1711 		goto done;
1712 	}
1713 done:
1714 	free(object_dir);
1715 	if (err) {
1716 		free(*id);
1717 		*id = NULL;
1718 	} else if (*id == NULL) {
1719 		switch (obj_type) {
1720 		case GOT_OBJ_TYPE_BLOB:
1721 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1722 			    GOT_OBJ_LABEL_BLOB, id_str_prefix);
1723 			break;
1724 		case GOT_OBJ_TYPE_TREE:
1725 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1726 			    GOT_OBJ_LABEL_TREE, id_str_prefix);
1727 			break;
1728 		case GOT_OBJ_TYPE_COMMIT:
1729 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1730 			    GOT_OBJ_LABEL_COMMIT, id_str_prefix);
1731 			break;
1732 		case GOT_OBJ_TYPE_TAG:
1733 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1734 			    GOT_OBJ_LABEL_TAG, id_str_prefix);
1735 			break;
1736 		default:
1737 			err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ);
1738 			break;
1739 		}
1740 	}
1741 
1742 	return err;
1743 }
1744 
1745 const struct got_error *
1746 got_repo_match_object_id(struct got_object_id **id, char **label,
1747     const char *id_str, int obj_type, struct got_reflist_head *refs,
1748     struct got_repository *repo)
1749 {
1750 	const struct got_error *err;
1751 	struct got_tag_object *tag;
1752 	struct got_reference *ref = NULL;
1753 
1754 	*id = NULL;
1755 	if (label)
1756 		*label = NULL;
1757 
1758 	if (refs) {
1759 		err = got_repo_object_match_tag(&tag, id_str, obj_type,
1760 		    refs, repo);
1761 		if (err == NULL) {
1762 			*id = got_object_id_dup(
1763 			    got_object_tag_get_object_id(tag));
1764 			if (*id == NULL)
1765 				err = got_error_from_errno("got_object_id_dup");
1766 			else if (label && asprintf(label, "refs/tags/%s",
1767 			    got_object_tag_get_name(tag)) == -1) {
1768 				err = got_error_from_errno("asprintf");
1769 				free(*id);
1770 				*id = NULL;
1771 			}
1772 			got_object_tag_close(tag);
1773 			return err;
1774 		} else if (err->code != GOT_ERR_OBJ_TYPE &&
1775 		    err->code != GOT_ERR_NO_OBJ)
1776 			return err;
1777 	}
1778 
1779 	err = got_repo_match_object_id_prefix(id, id_str, obj_type, repo);
1780 	if (err) {
1781 		if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
1782 			return err;
1783 		err = got_ref_open(&ref, repo, id_str, 0);
1784 		if (err != NULL)
1785 			goto done;
1786 		if (label) {
1787 			*label = strdup(got_ref_get_name(ref));
1788 			if (*label == NULL) {
1789 				err = got_error_from_errno("strdup");
1790 				goto done;
1791 			}
1792 		}
1793 		err = got_ref_resolve(id, repo, ref);
1794 	} else if (label) {
1795 		err = got_object_id_str(label, *id);
1796 		if (*label == NULL) {
1797 			err = got_error_from_errno("strdup");
1798 			goto done;
1799 		}
1800 	}
1801 done:
1802 	if (ref)
1803 		got_ref_close(ref);
1804 	return err;
1805 }
1806 
1807 const struct got_error *
1808 got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1809     int obj_type, struct got_reflist_head *refs, struct got_repository *repo)
1810 {
1811 	const struct got_error *err = NULL;
1812 	struct got_reflist_entry *re;
1813 	struct got_object_id *tag_id;
1814 	int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1815 
1816 	*tag = NULL;
1817 
1818 	TAILQ_FOREACH(re, refs, entry) {
1819 		const char *refname;
1820 		refname = got_ref_get_name(re->ref);
1821 		if (got_ref_is_symbolic(re->ref))
1822 			continue;
1823 		if (strncmp(refname, "refs/tags/", 10) != 0)
1824 			continue;
1825 		if (!name_is_absolute)
1826 			refname += strlen("refs/tags/");
1827 		if (strcmp(refname, name) != 0)
1828 			continue;
1829 		err = got_ref_resolve(&tag_id, repo, re->ref);
1830 		if (err)
1831 			break;
1832 		err = got_object_open_as_tag(tag, repo, tag_id);
1833 		free(tag_id);
1834 		if (err)
1835 			break;
1836 		if (obj_type == GOT_OBJ_TYPE_ANY ||
1837 		    got_object_tag_get_object_type(*tag) == obj_type)
1838 			break;
1839 		got_object_tag_close(*tag);
1840 		*tag = NULL;
1841 	}
1842 
1843 	if (err == NULL && *tag == NULL)
1844 		err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1845 		    GOT_OBJ_LABEL_TAG, name);
1846 	return err;
1847 }
1848 
1849 static const struct got_error *
1850 alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1851     const char *name, mode_t mode, struct got_object_id *blob_id)
1852 {
1853 	const struct got_error *err = NULL;
1854 
1855 	 *new_te = NULL;
1856 
1857 	*new_te = calloc(1, sizeof(**new_te));
1858 	if (*new_te == NULL)
1859 		return got_error_from_errno("calloc");
1860 
1861 	if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1862 	    sizeof((*new_te)->name)) {
1863 		err = got_error(GOT_ERR_NO_SPACE);
1864 		goto done;
1865 	}
1866 
1867 	if (S_ISLNK(mode)) {
1868 		(*new_te)->mode = S_IFLNK;
1869 	} else {
1870 		(*new_te)->mode = S_IFREG;
1871 		(*new_te)->mode |= (mode & (S_IRWXU | S_IRWXG | S_IRWXO));
1872 	}
1873 	memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1874 done:
1875 	if (err && *new_te) {
1876 		free(*new_te);
1877 		*new_te = NULL;
1878 	}
1879 	return err;
1880 }
1881 
1882 static const struct got_error *
1883 import_file(struct got_tree_entry **new_te, struct dirent *de,
1884     const char *path, struct got_repository *repo)
1885 {
1886 	const struct got_error *err;
1887 	struct got_object_id *blob_id = NULL;
1888 	char *filepath;
1889 	struct stat sb;
1890 
1891 	if (asprintf(&filepath, "%s%s%s", path,
1892 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1893 		return got_error_from_errno("asprintf");
1894 
1895 	if (lstat(filepath, &sb) != 0) {
1896 		err = got_error_from_errno2("lstat", path);
1897 		goto done;
1898 	}
1899 
1900 	err = got_object_blob_create(&blob_id, filepath, repo);
1901 	if (err)
1902 		goto done;
1903 
1904 	err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1905 	    blob_id);
1906 done:
1907 	free(filepath);
1908 	if (err)
1909 		free(blob_id);
1910 	return err;
1911 }
1912 
1913 static const struct got_error *
1914 insert_tree_entry(struct got_tree_entry *new_te,
1915     struct got_pathlist_head *paths)
1916 {
1917 	const struct got_error *err = NULL;
1918 	struct got_pathlist_entry *new_pe;
1919 
1920 	err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1921 	if (err)
1922 		return err;
1923 	if (new_pe == NULL)
1924 		return got_error(GOT_ERR_TREE_DUP_ENTRY);
1925 	return NULL;
1926 }
1927 
1928 static const struct got_error *write_tree(struct got_object_id **,
1929     const char *, struct got_pathlist_head *, struct got_repository *,
1930     got_repo_import_cb progress_cb, void *progress_arg);
1931 
1932 static const struct got_error *
1933 import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1934     const char *path, struct got_pathlist_head *ignores,
1935     struct got_repository *repo,
1936     got_repo_import_cb progress_cb, void *progress_arg)
1937 {
1938 	const struct got_error *err;
1939 	struct got_object_id *id = NULL;
1940 	char *subdirpath;
1941 
1942 	if (asprintf(&subdirpath, "%s%s%s", path,
1943 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1944 		return got_error_from_errno("asprintf");
1945 
1946 	(*new_te) = calloc(1, sizeof(**new_te));
1947 	if (*new_te == NULL)
1948 		return got_error_from_errno("calloc");
1949 	(*new_te)->mode = S_IFDIR;
1950 	if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1951 	    sizeof((*new_te)->name)) {
1952 		err = got_error(GOT_ERR_NO_SPACE);
1953 		goto done;
1954 	}
1955 	err = write_tree(&id, subdirpath, ignores,  repo,
1956 	    progress_cb, progress_arg);
1957 	if (err)
1958 		goto done;
1959 	memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1960 	
1961 done:
1962 	free(id);
1963 	free(subdirpath);
1964 	if (err) {
1965 		free(*new_te);
1966 		*new_te = NULL;
1967 	}
1968 	return err;
1969 }
1970 
1971 static const struct got_error *
1972 write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1973     struct got_pathlist_head *ignores, struct got_repository *repo,
1974     got_repo_import_cb progress_cb, void *progress_arg)
1975 {
1976 	const struct got_error *err = NULL;
1977 	DIR *dir;
1978 	struct dirent *de;
1979 	int nentries;
1980 	struct got_tree_entry *new_te = NULL;
1981 	struct got_pathlist_head paths;
1982 	struct got_pathlist_entry *pe;
1983 
1984 	*new_tree_id = NULL;
1985 
1986 	TAILQ_INIT(&paths);
1987 
1988 	dir = opendir(path_dir);
1989 	if (dir == NULL) {
1990 		err = got_error_from_errno2("opendir", path_dir);
1991 		goto done;
1992 	}
1993 
1994 	nentries = 0;
1995 	while ((de = readdir(dir)) != NULL) {
1996 		int ignore = 0;
1997 		int type;
1998 
1999 		if (strcmp(de->d_name, ".") == 0 ||
2000 		    strcmp(de->d_name, "..") == 0)
2001 			continue;
2002 
2003 		TAILQ_FOREACH(pe, ignores, entry) {
2004 			if (fnmatch(pe->path, de->d_name, 0) == 0) {
2005 				ignore = 1;
2006 				break;
2007 			}
2008 		}
2009 		if (ignore)
2010 			continue;
2011 
2012 		err = got_path_dirent_type(&type, path_dir, de);
2013 		if (err)
2014 			goto done;
2015 
2016 		if (type == DT_DIR) {
2017 			err = import_subdir(&new_te, de, path_dir,
2018 			    ignores, repo, progress_cb, progress_arg);
2019 			if (err) {
2020 				if (err->code != GOT_ERR_NO_TREE_ENTRY)
2021 					goto done;
2022 				err = NULL;
2023 				continue;
2024 			}
2025 		} else if (type == DT_REG || type == DT_LNK) {
2026 			err = import_file(&new_te, de, path_dir, repo);
2027 			if (err)
2028 				goto done;
2029 		} else
2030 			continue;
2031 
2032 		err = insert_tree_entry(new_te, &paths);
2033 		if (err)
2034 			goto done;
2035 		nentries++;
2036 	}
2037 
2038 	if (TAILQ_EMPTY(&paths)) {
2039 		err = got_error_msg(GOT_ERR_NO_TREE_ENTRY,
2040 		    "cannot create tree without any entries");
2041 		goto done;
2042 	}
2043 
2044 	TAILQ_FOREACH(pe, &paths, entry) {
2045 		struct got_tree_entry *te = pe->data;
2046 		char *path;
2047 		if (!S_ISREG(te->mode) && !S_ISLNK(te->mode))
2048 			continue;
2049 		if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
2050 			err = got_error_from_errno("asprintf");
2051 			goto done;
2052 		}
2053 		err = (*progress_cb)(progress_arg, path);
2054 		free(path);
2055 		if (err)
2056 			goto done;
2057 	}
2058 
2059 	err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
2060 done:
2061 	if (dir)
2062 		closedir(dir);
2063 	got_pathlist_free(&paths);
2064 	return err;
2065 }
2066 
2067 const struct got_error *
2068 got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
2069     const char *logmsg, const char *author, struct got_pathlist_head *ignores,
2070     struct got_repository *repo, got_repo_import_cb progress_cb,
2071     void *progress_arg)
2072 {
2073 	const struct got_error *err;
2074 	struct got_object_id *new_tree_id;
2075 
2076 	err = write_tree(&new_tree_id, path_dir, ignores, repo,
2077 	    progress_cb, progress_arg);
2078 	if (err)
2079 		return err;
2080 
2081 	err = got_object_commit_create(new_commit_id, new_tree_id, NULL, 0,
2082 	    author, time(NULL), author, time(NULL), logmsg, repo);
2083 	free(new_tree_id);
2084 	return err;
2085 }
2086 
2087 const struct got_error *
2088 got_repo_get_loose_object_info(int *nobjects, off_t *ondisk_size,
2089     struct got_repository *repo)
2090 {
2091 	const struct got_error *err = NULL;
2092 	char *path_objects = NULL, *path = NULL;
2093 	DIR *dir = NULL;
2094 	struct got_object_id id;
2095 	int i;
2096 
2097 	*nobjects = 0;
2098 	*ondisk_size = 0;
2099 
2100 	path_objects = got_repo_get_path_objects(repo);
2101 	if (path_objects == NULL)
2102 		return got_error_from_errno("got_repo_get_path_objects");
2103 
2104 	for (i = 0; i <= 0xff; i++) {
2105 		struct dirent *dent;
2106 
2107 		if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
2108 			err = got_error_from_errno("asprintf");
2109 			break;
2110 		}
2111 
2112 		dir = opendir(path);
2113 		if (dir == NULL) {
2114 			if (errno == ENOENT) {
2115 				err = NULL;
2116 				continue;
2117 			}
2118 			err = got_error_from_errno2("opendir", path);
2119 			break;
2120 		}
2121 
2122 		while ((dent = readdir(dir)) != NULL) {
2123 			char *id_str;
2124 			int fd;
2125 			struct stat sb;
2126 
2127 			if (strcmp(dent->d_name, ".") == 0 ||
2128 			    strcmp(dent->d_name, "..") == 0)
2129 				continue;
2130 
2131 			if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
2132 				err = got_error_from_errno("asprintf");
2133 				goto done;
2134 			}
2135 
2136 			if (!got_parse_sha1_digest(id.sha1, id_str)) {
2137 				free(id_str);
2138 				continue;
2139 			}
2140 			free(id_str);
2141 
2142 			err = got_object_open_loose_fd(&fd, &id, repo);
2143 			if (err)
2144 				goto done;
2145 
2146 			if (fstat(fd, &sb) == -1) {
2147 				err = got_error_from_errno("fstat");
2148 				close(fd);
2149 				goto done;
2150 			}
2151 			(*nobjects)++;
2152 			(*ondisk_size) += sb.st_size;
2153 
2154 			if (close(fd) == -1) {
2155 				err = got_error_from_errno("close");
2156 				goto done;
2157 			}
2158 		}
2159 
2160 		if (closedir(dir) != 0) {
2161 			err = got_error_from_errno("closedir");
2162 			goto done;
2163 		}
2164 		dir = NULL;
2165 
2166 		free(path);
2167 		path = NULL;
2168 	}
2169 done:
2170 	if (dir && closedir(dir) != 0 && err == NULL)
2171 		err = got_error_from_errno("closedir");
2172 
2173 	if (err) {
2174 		*nobjects = 0;
2175 		*ondisk_size = 0;
2176 	}
2177 	free(path_objects);
2178 	free(path);
2179 	return err;
2180 }
2181 
2182 const struct got_error *
2183 got_repo_get_packfile_info(int *npackfiles, int *nobjects,
2184     off_t *total_packsize, struct got_repository *repo)
2185 {
2186 	const struct got_error *err = NULL;
2187 	DIR *packdir = NULL;
2188 	struct dirent *dent;
2189 	struct got_packidx *packidx = NULL;
2190 	char *path_packidx;
2191 	char *path_packfile;
2192 	int packdir_fd;
2193 	struct stat sb;
2194 
2195 	*npackfiles = 0;
2196 	*nobjects = 0;
2197 	*total_packsize = 0;
2198 
2199 	packdir_fd = openat(got_repo_get_fd(repo),
2200 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
2201 	if (packdir_fd == -1) {
2202 		return got_error_from_errno_fmt("openat: %s/%s",
2203 		    got_repo_get_path_git_dir(repo),
2204 		    GOT_OBJECTS_PACK_DIR);
2205 	}
2206 
2207 	packdir = fdopendir(packdir_fd);
2208 	if (packdir == NULL) {
2209 		err = got_error_from_errno("fdopendir");
2210 		goto done;
2211 	}
2212 
2213 	while ((dent = readdir(packdir)) != NULL) {
2214 		if (!got_repo_is_packidx_filename(dent->d_name,
2215 		    strlen(dent->d_name)))
2216 			continue;
2217 
2218 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
2219 		    dent->d_name) == -1) {
2220 			err = got_error_from_errno("asprintf");
2221 			goto done;
2222 		}
2223 
2224 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
2225 		    path_packidx, 0);
2226 		free(path_packidx);
2227 		if (err)
2228 			goto done;
2229 
2230 		if (fstat(packidx->fd, &sb) == -1)
2231 			goto done;
2232 		*total_packsize += sb.st_size;
2233 
2234 		err = got_packidx_get_packfile_path(&path_packfile,
2235 		    packidx->path_packidx);
2236 		if (err)
2237 			goto done;
2238 
2239 		if (fstatat(got_repo_get_fd(repo), path_packfile, &sb,
2240 		    0) == -1) {
2241 			free(path_packfile);
2242 			goto done;
2243 		}
2244 		free(path_packfile);
2245 		*total_packsize += sb.st_size;
2246 
2247 		*nobjects += be32toh(packidx->hdr.fanout_table[0xff]);
2248 
2249 		(*npackfiles)++;
2250 
2251 		got_packidx_close(packidx);
2252 		packidx = NULL;
2253 	}
2254 done:
2255 	if (packidx)
2256 		got_packidx_close(packidx);
2257 	if (packdir && closedir(packdir) != 0 && err == NULL)
2258 		err = got_error_from_errno("closedir");
2259 	if (err) {
2260 		*npackfiles = 0;
2261 		*nobjects = 0;
2262 		*total_packsize = 0;
2263 	}
2264 	return err;
2265 }
2266 
2267 RB_GENERATE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
2268     got_packidx_bloom_filter_cmp);