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