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