2 * Copyright (c) 2020 Stefan Sperling <stsp@openbsd.org>
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.
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.
17 #include <sys/types.h>
20 #include <sys/socket.h>
33 #include "got_error.h"
34 #include "got_cancel.h"
35 #include "got_object.h"
36 #include "got_reference.h"
37 #include "got_repository.h"
38 #include "got_repository_admin.h"
39 #include "got_opentemp.h"
42 #include "got_lib_delta.h"
43 #include "got_lib_object.h"
44 #include "got_lib_object_idset.h"
45 #include "got_lib_object_cache.h"
46 #include "got_lib_pack.h"
47 #include "got_lib_privsep.h"
48 #include "got_lib_repository.h"
49 #include "got_lib_pack_create.h"
50 #include "got_lib_sha1.h"
51 #include "got_lib_lockfile.h"
54 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
57 static const struct got_error *
58 get_reflist_object_ids(struct got_object_id ***ids, int *nobjects,
59 unsigned int wanted_obj_type_mask, struct got_reflist_head *refs,
60 struct got_repository *repo,
61 got_cancel_cb cancel_cb, void *cancel_arg)
63 const struct got_error *err = NULL;
64 const size_t alloc_chunksz = 256;
66 struct got_reflist_entry *re;
72 *ids = reallocarray(NULL, alloc_chunksz, sizeof(struct got_object_id *));
74 return got_error_from_errno("reallocarray");
75 nalloc = alloc_chunksz;
77 TAILQ_FOREACH(re, refs, entry) {
78 struct got_object_id *id;
81 err = cancel_cb(cancel_arg);
86 err = got_ref_resolve(&id, repo, re->ref);
90 if (wanted_obj_type_mask != GOT_OBJ_TYPE_ANY) {
92 err = got_object_get_type(&obj_type, repo, id);
95 if ((wanted_obj_type_mask & (1 << obj_type)) == 0) {
102 if (nalloc <= *nobjects) {
103 struct got_object_id **new;
104 new = recallocarray(*ids, nalloc,
105 nalloc + alloc_chunksz,
106 sizeof(struct got_object_id *));
108 err = got_error_from_errno(
113 nalloc += alloc_chunksz;
115 (*ids)[*nobjects] = id;
116 if ((*ids)[*nobjects] == NULL) {
117 err = got_error_from_errno("got_object_id_dup");
124 for (i = 0; i < *nobjects; i++)
133 const struct got_error *
134 got_repo_pack_objects(FILE **packfile, struct got_object_id **pack_hash,
135 struct got_reflist_head *include_refs,
136 struct got_reflist_head *exclude_refs, struct got_repository *repo,
137 int loose_obj_only, got_pack_progress_cb progress_cb, void *progress_arg,
138 got_cancel_cb cancel_cb, void *cancel_arg)
140 const struct got_error *err = NULL;
141 struct got_object_id **ours = NULL, **theirs = NULL;
142 int nours = 0, ntheirs = 0, packfd = -1, i;
143 char *tmpfile_path = NULL, *path = NULL, *packfile_path = NULL;
144 char *sha1_str = NULL;
149 if (asprintf(&path, "%s/%s/packing.pack",
150 got_repo_get_path_git_dir(repo), GOT_OBJECTS_PACK_DIR) == -1) {
151 err = got_error_from_errno("asprintf");
154 err = got_opentemp_named_fd(&tmpfile_path, &packfd, path);
158 if (fchmod(packfd, GOT_DEFAULT_FILE_MODE) != 0) {
159 err = got_error_from_errno2("fchmod", tmpfile_path);
163 *packfile = fdopen(packfd, "w");
164 if (*packfile == NULL) {
165 err = got_error_from_errno2("fdopen", tmpfile_path);
170 err = get_reflist_object_ids(&ours, &nours,
171 (1 << GOT_OBJ_TYPE_COMMIT) | (1 << GOT_OBJ_TYPE_TAG),
172 include_refs, repo, cancel_cb, cancel_arg);
177 err = got_error(GOT_ERR_CANNOT_PACK);
181 if (!TAILQ_EMPTY(exclude_refs)) {
182 err = get_reflist_object_ids(&theirs, &ntheirs,
183 (1 << GOT_OBJ_TYPE_COMMIT) | (1 << GOT_OBJ_TYPE_TAG),
185 cancel_cb, cancel_arg);
190 *pack_hash = calloc(1, sizeof(**pack_hash));
191 if (*pack_hash == NULL) {
192 err = got_error_from_errno("calloc");
196 err = got_pack_create((*pack_hash)->sha1, *packfile, theirs, ntheirs,
197 ours, nours, repo, loose_obj_only, 0, progress_cb, progress_arg,
198 cancel_cb, cancel_arg);
202 err = got_object_id_str(&sha1_str, *pack_hash);
205 if (asprintf(&packfile_path, "%s/%s/pack-%s.pack",
206 got_repo_get_path_git_dir(repo), GOT_OBJECTS_PACK_DIR,
208 err = got_error_from_errno("asprintf");
212 if (fflush(*packfile) == -1) {
213 err = got_error_from_errno("fflush");
216 if (fseek(*packfile, 0L, SEEK_SET) == -1) {
217 err = got_error_from_errno("fseek");
220 if (rename(tmpfile_path, packfile_path) == -1) {
221 err = got_error_from_errno3("rename", tmpfile_path,
228 for (i = 0; i < nours; i++)
231 for (i = 0; i < ntheirs; i++)
234 if (packfd != -1 && close(packfd) == -1 && err == NULL)
235 err = got_error_from_errno2("close", packfile_path);
236 if (tmpfile_path && unlink(tmpfile_path) == -1 && err == NULL)
237 err = got_error_from_errno2("unlink", tmpfile_path);
252 const struct got_error *
253 got_repo_index_pack(FILE *packfile, struct got_object_id *pack_hash,
254 struct got_repository *repo,
255 got_pack_index_progress_cb progress_cb, void *progress_arg,
256 got_cancel_cb cancel_cb, void *cancel_arg)
261 int npackfd = -1, idxfd = -1, nidxfd = -1;
263 int idxstatus, done = 0;
264 const struct got_error *err;
265 struct imsgbuf idxibuf;
267 char *tmpidxpath = NULL;
268 char *packfile_path = NULL, *idxpath = NULL, *id_str = NULL;
269 const char *repo_path = got_repo_get_path_git_dir(repo);
272 for (i = 0; i < nitems(tmpfds); i++)
275 if (asprintf(&path, "%s/%s/indexing.idx",
276 repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
277 err = got_error_from_errno("asprintf");
280 err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path);
284 if (fchmod(idxfd, GOT_DEFAULT_FILE_MODE) != 0) {
285 err = got_error_from_errno2("fchmod", tmpidxpath);
291 err = got_error_from_errno("dup");
295 for (i = 0; i < nitems(tmpfds); i++) {
296 tmpfds[i] = got_opentempfd();
297 if (tmpfds[i] == -1) {
298 err = got_error_from_errno("got_opentempfd");
303 err = got_object_id_str(&id_str, pack_hash);
307 if (asprintf(&packfile_path, "%s/%s/pack-%s.pack",
308 repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
309 err = got_error_from_errno("asprintf");
313 if (fstat(fileno(packfile), &sb) == -1) {
314 err = got_error_from_errno2("fstat", packfile_path);
318 if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
319 repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
320 err = got_error_from_errno("asprintf");
324 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_idxfds) == -1) {
325 err = got_error_from_errno("socketpair");
330 err= got_error_from_errno("fork");
332 } else if (idxpid == 0)
333 got_privsep_exec_child(imsg_idxfds,
334 GOT_PATH_PROG_INDEX_PACK, packfile_path);
335 if (close(imsg_idxfds[1]) == -1) {
336 err = got_error_from_errno("close");
339 imsg_init(&idxibuf, imsg_idxfds[0]);
341 npackfd = dup(fileno(packfile));
343 err = got_error_from_errno("dup");
346 err = got_privsep_send_index_pack_req(&idxibuf, pack_hash->sha1,
351 err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
355 for (i = 0; i < nitems(tmpfds); i++) {
356 err = got_privsep_send_tmpfd(&idxibuf, tmpfds[i]);
363 int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
366 err = cancel_cb(cancel_arg);
371 err = got_privsep_recv_index_progress(&done, &nobj_total,
372 &nobj_indexed, &nobj_loose, &nobj_resolved,
376 if (nobj_indexed != 0) {
377 err = progress_cb(progress_arg, sb.st_size,
378 nobj_total, nobj_indexed, nobj_loose,
383 imsg_clear(&idxibuf);
385 if (close(imsg_idxfds[0]) == -1) {
386 err = got_error_from_errno("close");
389 if (waitpid(idxpid, &idxstatus, 0) == -1) {
390 err = got_error_from_errno("waitpid");
394 if (rename(tmpidxpath, idxpath) == -1) {
395 err = got_error_from_errno3("rename", tmpidxpath, idxpath);
402 if (tmpidxpath && unlink(tmpidxpath) == -1 && err == NULL)
403 err = got_error_from_errno2("unlink", tmpidxpath);
404 if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
405 err = got_error_from_errno("close");
406 if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
407 err = got_error_from_errno("close");
408 for (i = 0; i < nitems(tmpfds); i++) {
409 if (tmpfds[i] != -1 && close(tmpfds[i]) == -1 && err == NULL)
410 err = got_error_from_errno("close");
418 const struct got_error *
419 got_repo_find_pack(FILE **packfile, struct got_object_id **pack_hash,
420 struct got_repository *repo, const char *packfile_path)
422 const struct got_error *err = NULL;
423 const char *packdir_path = NULL;
424 char *packfile_name = NULL, *p, *dot;
425 struct got_object_id id;
431 packdir_path = got_repo_get_path_objects_pack(repo);
432 if (packdir_path == NULL)
433 return got_error_from_errno("got_repo_get_path_objects_pack");
435 if (!got_path_is_child(packfile_path, packdir_path,
436 strlen(packdir_path))) {
437 err = got_error_path(packfile_path, GOT_ERR_BAD_PATH);
442 err = got_path_basename(&packfile_name, packfile_path);
447 if (strncmp(p, "pack-", 5) != 0) {
448 err = got_error_fmt(GOT_ERR_BAD_PATH,
449 "'%s' is not a valid pack file name",
454 dot = strchr(p, '.');
456 err = got_error_fmt(GOT_ERR_BAD_PATH,
457 "'%s' is not a valid pack file name",
461 if (strcmp(dot + 1, "pack") != 0) {
462 err = got_error_fmt(GOT_ERR_BAD_PATH,
463 "'%s' is not a valid pack file name",
468 if (!got_parse_sha1_digest(id.sha1, p)) {
469 err = got_error_fmt(GOT_ERR_BAD_PATH,
470 "'%s' is not a valid pack file name",
475 *pack_hash = got_object_id_dup(&id);
476 if (*pack_hash == NULL) {
477 err = got_error_from_errno("got_object_id_dup");
481 packfd = open(packfile_path, O_RDONLY | O_NOFOLLOW);
483 err = got_error_from_errno2("open", packfile_path);
487 *packfile = fdopen(packfd, "r");
488 if (*packfile == NULL) {
489 err = got_error_from_errno2("fdopen", packfile_path);
494 if (packfd != -1 && close(packfd) == -1 && err == NULL)
495 err = got_error_from_errno2("close", packfile_path);
504 const struct got_error *
505 got_repo_list_pack(FILE *packfile, struct got_object_id *pack_hash,
506 struct got_repository *repo, got_pack_list_cb list_cb, void *list_arg,
507 got_cancel_cb cancel_cb, void *cancel_arg)
509 const struct got_error *err = NULL;
510 char *id_str = NULL, *idxpath = NULL, *packpath = NULL;
511 struct got_packidx *packidx = NULL;
512 struct got_pack *pack = NULL;
515 err = got_object_id_str(&id_str, pack_hash);
519 if (asprintf(&packpath, "%s/pack-%s.pack",
520 GOT_OBJECTS_PACK_DIR, id_str) == -1) {
521 err = got_error_from_errno("asprintf");
524 if (asprintf(&idxpath, "%s/pack-%s.idx",
525 GOT_OBJECTS_PACK_DIR, id_str) == -1) {
526 err = got_error_from_errno("asprintf");
530 err = got_packidx_open(&packidx, got_repo_get_fd(repo), idxpath, 1);
534 err = got_repo_cache_pack(&pack, repo, packpath, packidx);
538 nobj = be32toh(packidx->hdr.fanout_table[0xff]);
539 for (i = 0; i < nobj; i++) {
540 struct got_packidx_object_id *oid;
541 struct got_object_id id, base_id;
542 off_t offset, base_offset = 0;
548 err = cancel_cb(cancel_arg);
552 oid = &packidx->hdr.sorted_ids[i];
553 memcpy(id.sha1, oid->sha1, SHA1_DIGEST_LENGTH);
555 offset = got_packidx_get_object_offset(packidx, i);
557 err = got_error(GOT_ERR_BAD_PACKIDX);
561 err = got_pack_parse_object_type_and_size(&type, &size, &tslen,
567 case GOT_OBJ_TYPE_OFFSET_DELTA:
568 err = got_pack_parse_offset_delta(&base_offset, &len,
569 pack, offset, tslen);
573 case GOT_OBJ_TYPE_REF_DELTA:
574 err = got_pack_parse_ref_delta(&base_id,
575 pack, offset, tslen);
580 err = (*list_cb)(list_arg, &id, type, offset, size,
581 base_offset, &base_id);
591 got_packidx_close(packidx);
595 static const struct got_error *
596 get_loose_object_ids(struct got_object_idset **loose_ids, off_t *ondisk_size,
597 got_cleanup_progress_cb progress_cb, void *progress_arg,
598 struct got_repository *repo)
600 const struct got_error *err = NULL;
601 char *path_objects = NULL, *path = NULL;
603 struct got_object *obj = NULL;
604 struct got_object_id id;
609 *loose_ids = got_object_idset_alloc();
610 if (*loose_ids == NULL)
611 return got_error_from_errno("got_object_idset_alloc");
613 path_objects = got_repo_get_path_objects(repo);
614 if (path_objects == NULL) {
615 err = got_error_from_errno("got_repo_get_path_objects");
619 for (i = 0; i <= 0xff; i++) {
622 if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
623 err = got_error_from_errno("asprintf");
629 if (errno == ENOENT) {
633 err = got_error_from_errno2("opendir", path);
637 while ((dent = readdir(dir)) != NULL) {
640 if (strcmp(dent->d_name, ".") == 0 ||
641 strcmp(dent->d_name, "..") == 0)
644 if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
645 err = got_error_from_errno("asprintf");
649 memset(&id, 0, sizeof(id));
650 if (!got_parse_sha1_digest(id.sha1, id_str)) {
656 err = got_object_open_loose_fd(&fd, &id, repo);
659 if (fstat(fd, &sb) == -1) {
660 err = got_error_from_errno("fstat");
663 err = got_object_read_header_privsep(&obj, &id, repo,
667 fd = -1; /* already closed */
670 case GOT_OBJ_TYPE_COMMIT:
671 case GOT_OBJ_TYPE_TREE:
672 case GOT_OBJ_TYPE_BLOB:
673 case GOT_OBJ_TYPE_TAG:
676 err = got_error_fmt(GOT_ERR_OBJ_TYPE,
680 got_object_close(obj);
682 (*ondisk_size) += sb.st_size;
683 err = got_object_idset_add(*loose_ids, &id, NULL);
687 err = progress_cb(progress_arg,
688 got_object_idset_num_elements(*loose_ids),
695 if (closedir(dir) != 0) {
696 err = got_error_from_errno("closedir");
705 if (dir && closedir(dir) != 0 && err == NULL)
706 err = got_error_from_errno("closedir");
707 if (fd != -1 && close(fd) == -1 && err == NULL)
708 err = got_error_from_errno("close");
710 got_object_idset_free(*loose_ids);
714 got_object_close(obj);
720 static const struct got_error *
721 preserve_loose_object(struct got_object_idset *loose_ids,
722 struct got_object_id *id, struct got_repository *repo, int *npacked)
724 const struct got_error *err = NULL;
725 struct got_object *obj;
727 if (!got_object_idset_contains(loose_ids, id))
731 * Try to open this object from a pack file. This ensures that
732 * we do in fact have a valid packed copy of the object. Otherwise
733 * we should not delete the loose representation of this object.
735 err = got_object_open_packed(&obj, id, repo);
737 got_object_close(obj);
739 * The object is referenced and packed.
740 * We can purge the redundantly stored loose object.
744 } else if (err->code != GOT_ERR_NO_OBJ)
748 * This object is referenced and not packed.
749 * Remove it from our purge set.
751 return got_object_idset_remove(NULL, loose_ids, id);
754 static const struct got_error *
755 load_tree_entries(struct got_object_id_queue *ids,
756 struct got_object_idset *loose_ids,
757 struct got_object_idset *traversed_ids, struct got_object_id *tree_id,
758 const char *dpath, struct got_repository *repo, int *npacked,
759 got_cancel_cb cancel_cb, void *cancel_arg)
761 const struct got_error *err;
762 struct got_tree_object *tree;
766 err = got_object_open_as_tree(&tree, repo, tree_id);
770 for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
771 struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
772 struct got_object_id *id = got_tree_entry_get_id(e);
773 mode_t mode = got_tree_entry_get_mode(e);
776 err = (*cancel_cb)(cancel_arg);
781 if (got_object_tree_entry_is_symlink(e) ||
782 got_object_tree_entry_is_submodule(e) ||
783 got_object_idset_contains(traversed_ids, id))
786 if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
787 got_tree_entry_get_name(e)) == -1) {
788 err = got_error_from_errno("asprintf");
793 struct got_object_qid *qid;
794 err = got_object_qid_alloc(&qid, id);
797 STAILQ_INSERT_TAIL(ids, qid, entry);
798 } else if (S_ISREG(mode)) {
799 /* This blob is referenced. */
800 err = preserve_loose_object(loose_ids, id, repo,
804 err = got_object_idset_add(traversed_ids, id, NULL);
813 got_object_tree_close(tree);
818 static const struct got_error *
819 load_tree(struct got_object_idset *loose_ids,
820 struct got_object_idset *traversed_ids, struct got_object_id *tree_id,
821 const char *dpath, struct got_repository *repo, int *npacked,
822 got_cancel_cb cancel_cb, void *cancel_arg)
824 const struct got_error *err = NULL;
825 struct got_object_id_queue tree_ids;
826 struct got_object_qid *qid;
828 err = got_object_qid_alloc(&qid, tree_id);
832 STAILQ_INIT(&tree_ids);
833 STAILQ_INSERT_TAIL(&tree_ids, qid, entry);
835 while (!STAILQ_EMPTY(&tree_ids)) {
837 err = (*cancel_cb)(cancel_arg);
842 qid = STAILQ_FIRST(&tree_ids);
843 STAILQ_REMOVE_HEAD(&tree_ids, entry);
845 if (got_object_idset_contains(traversed_ids, qid->id)) {
846 got_object_qid_free(qid);
850 err = got_object_idset_add(traversed_ids, qid->id, NULL);
852 got_object_qid_free(qid);
856 /* This tree is referenced. */
857 err = preserve_loose_object(loose_ids, qid->id, repo, npacked);
861 err = load_tree_entries(&tree_ids, loose_ids, traversed_ids,
862 qid->id, dpath, repo, npacked, cancel_cb, cancel_arg);
863 got_object_qid_free(qid);
868 got_object_id_queue_free(&tree_ids);
872 static const struct got_error *
873 load_commit_or_tag(struct got_object_idset *loose_ids, int *ncommits,
874 int *npacked, struct got_object_idset *traversed_ids,
875 struct got_object_id *id, struct got_repository *repo,
876 got_cleanup_progress_cb progress_cb, void *progress_arg, int nloose,
877 got_cancel_cb cancel_cb, void *cancel_arg)
879 const struct got_error *err;
880 struct got_commit_object *commit = NULL;
881 struct got_tag_object *tag = NULL;
882 struct got_object_id *tree_id = NULL;
883 struct got_object_id_queue ids;
884 struct got_object_qid *qid;
887 err = got_object_qid_alloc(&qid, id);
892 STAILQ_INSERT_TAIL(&ids, qid, entry);
894 while (!STAILQ_EMPTY(&ids)) {
896 err = (*cancel_cb)(cancel_arg);
901 qid = STAILQ_FIRST(&ids);
902 STAILQ_REMOVE_HEAD(&ids, entry);
904 if (got_object_idset_contains(traversed_ids, qid->id)) {
905 got_object_qid_free(qid);
910 err = got_object_idset_add(traversed_ids, qid->id, NULL);
914 /* This commit or tag is referenced. */
915 err = preserve_loose_object(loose_ids, qid->id, repo, npacked);
919 err = got_object_get_type(&obj_type, repo, qid->id);
923 case GOT_OBJ_TYPE_COMMIT:
924 err = got_object_open_as_commit(&commit, repo, qid->id);
928 case GOT_OBJ_TYPE_TAG:
929 err = got_object_open_as_tag(&tag, repo, qid->id);
934 /* should not happen */
935 err = got_error(GOT_ERR_OBJ_TYPE);
939 /* Find a tree object to scan. */
941 tree_id = got_object_commit_get_tree_id(commit);
943 obj_type = got_object_tag_get_object_type(tag);
945 case GOT_OBJ_TYPE_COMMIT:
946 err = got_object_open_as_commit(&commit, repo,
947 got_object_tag_get_object_id(tag));
950 tree_id = got_object_commit_get_tree_id(commit);
952 case GOT_OBJ_TYPE_TREE:
953 tree_id = got_object_tag_get_object_id(tag);
957 * Tag points at something other than a
958 * commit or tree. Leave this weird tag object
959 * and the object it points to on disk.
961 err = got_object_idset_remove(NULL, loose_ids,
963 if (err && err->code != GOT_ERR_NO_OBJ)
965 err = got_object_idset_remove(NULL, loose_ids,
966 got_object_tag_get_object_id(tag));
967 if (err && err->code != GOT_ERR_NO_OBJ)
975 err = load_tree(loose_ids, traversed_ids, tree_id, "",
976 repo, npacked, cancel_cb, cancel_arg);
982 (*ncommits)++; /* scanned tags are counted as commits */
985 err = progress_cb(progress_arg, nloose, *ncommits, -1);
991 /* Find parent commits to scan. */
992 const struct got_object_id_queue *parent_ids;
993 parent_ids = got_object_commit_get_parent_ids(commit);
994 err = got_object_id_queue_copy(parent_ids, &ids);
997 got_object_commit_close(commit);
1001 got_object_tag_close(tag);
1004 got_object_qid_free(qid);
1009 got_object_qid_free(qid);
1011 got_object_commit_close(commit);
1013 got_object_tag_close(tag);
1014 got_object_id_queue_free(&ids);
1018 struct purge_loose_object_arg {
1019 struct got_repository *repo;
1020 got_cleanup_progress_cb progress_cb;
1031 static const struct got_error *
1032 purge_loose_object(struct got_object_id *id, void *data, void *arg)
1034 struct purge_loose_object_arg *a = arg;
1035 const struct got_error *err, *unlock_err = NULL;
1039 struct got_lockfile *lf = NULL;
1041 err = got_object_get_path(&path, id, a->repo);
1045 err = got_object_open_loose_fd(&fd, id, a->repo);
1049 if (fstat(fd, &sb) == -1) {
1050 err = got_error_from_errno("fstat");
1055 * Do not delete objects which are younger than our maximum
1056 * modification time threshold. This prevents a race where
1057 * new objects which are being added to the repository
1058 * concurrently would be deleted.
1060 if (a->ignore_mtime || sb.st_mtime <= a->max_mtime) {
1062 err = got_lockfile_lock(&lf, path, -1);
1065 if (unlink(path) == -1) {
1066 err = got_error_from_errno2("unlink", path);
1072 a->size_purged += sb.st_size;
1073 if (a->progress_cb) {
1074 err = a->progress_cb(a->progress_arg, a->nloose,
1075 a->ncommits, a->npurged);
1079 if (fd != -1 && close(fd) == -1 && err == NULL)
1080 err = got_error_from_errno("close");
1083 unlock_err = got_lockfile_unlock(lf, -1);
1084 return err ? err : unlock_err;
1087 const struct got_error *
1088 got_repo_purge_unreferenced_loose_objects(struct got_repository *repo,
1089 off_t *size_before, off_t *size_after, int *npacked, int dry_run,
1090 int ignore_mtime, got_cleanup_progress_cb progress_cb, void *progress_arg,
1091 got_cancel_cb cancel_cb, void *cancel_arg)
1093 const struct got_error *err;
1094 struct got_object_idset *loose_ids;
1095 struct got_object_idset *traversed_ids;
1096 struct got_object_id **referenced_ids;
1097 int i, nreferenced, nloose, ncommits = 0;
1098 struct got_reflist_head refs;
1099 struct got_reflist_entry *re;
1100 struct purge_loose_object_arg arg;
1101 time_t max_mtime = 0;
1109 err = get_loose_object_ids(&loose_ids, size_before,
1110 progress_cb, progress_arg, repo);
1113 nloose = got_object_idset_num_elements(loose_ids);
1115 got_object_idset_free(loose_ids);
1119 traversed_ids = got_object_idset_alloc();
1120 if (traversed_ids == NULL) {
1121 err = got_error_from_errno("got_object_idset_alloc");
1125 err = got_ref_list(&refs, repo, "", got_ref_cmp_by_name, NULL);
1128 if (!ignore_mtime) {
1129 TAILQ_FOREACH(re, &refs, entry) {
1130 time_t mtime = got_ref_get_mtime(re->ref);
1131 if (mtime > max_mtime)
1135 * For safety, keep objects created within 10 minutes
1136 * before the youngest reference was created.
1138 if (max_mtime >= 600)
1142 err = get_reflist_object_ids(&referenced_ids, &nreferenced,
1143 (1 << GOT_OBJ_TYPE_COMMIT) | (1 << GOT_OBJ_TYPE_TAG),
1144 &refs, repo, cancel_cb, cancel_arg);
1148 for (i = 0; i < nreferenced; i++) {
1149 struct got_object_id *id = referenced_ids[i];
1150 err = load_commit_or_tag(loose_ids, &ncommits, npacked,
1151 traversed_ids, id, repo, progress_cb, progress_arg, nloose,
1152 cancel_cb, cancel_arg);
1157 /* Produce a final progress report in case no objects can be purged. */
1158 if (got_object_idset_num_elements(loose_ids) == 0 && progress_cb) {
1159 err = progress_cb(progress_arg, nloose, ncommits, 0);
1164 /* Any remaining loose objects are unreferenced and can be purged. */
1166 arg.progress_arg = progress_arg;
1167 arg.progress_cb = progress_cb;
1168 arg.nloose = nloose;
1170 arg.size_purged = 0;
1171 arg.ncommits = ncommits;
1172 arg.dry_run = dry_run;
1173 arg.max_mtime = max_mtime;
1174 arg.ignore_mtime = ignore_mtime;
1175 err = got_object_idset_for_each(loose_ids, purge_loose_object, &arg);
1178 *size_after = *size_before - arg.size_purged;
1180 got_object_idset_free(loose_ids);
1181 got_object_idset_free(traversed_ids);
1185 static const struct got_error *
1186 remove_packidx(int dir_fd, const char *relpath)
1188 const struct got_error *err, *unlock_err;
1189 struct got_lockfile *lf;
1191 err = got_lockfile_lock(&lf, relpath, dir_fd);
1194 if (unlinkat(dir_fd, relpath, 0) == -1)
1195 err = got_error_from_errno("unlinkat");
1196 unlock_err = got_lockfile_unlock(lf, dir_fd);
1197 return err ? err : unlock_err;
1200 const struct got_error *
1201 got_repo_remove_lonely_packidx(struct got_repository *repo, int dry_run,
1202 got_lonely_packidx_progress_cb progress_cb, void *progress_arg,
1203 got_cancel_cb cancel_cb, void *cancel_arg)
1205 const struct got_error *err;
1206 DIR *packdir = NULL;
1207 struct dirent *dent;
1208 char *pack_relpath = NULL;
1212 packdir_fd = openat(got_repo_get_fd(repo),
1213 GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
1214 if (packdir_fd == -1) {
1215 if (errno == ENOENT)
1217 return got_error_from_errno_fmt("openat: %s/%s",
1218 got_repo_get_path_git_dir(repo),
1219 GOT_OBJECTS_PACK_DIR);
1222 packdir = fdopendir(packdir_fd);
1223 if (packdir == NULL) {
1224 err = got_error_from_errno("fdopendir");
1228 while ((dent = readdir(packdir)) != NULL) {
1230 err = cancel_cb(cancel_arg);
1235 if (!got_repo_is_packidx_filename(dent->d_name,
1236 strlen(dent->d_name)))
1239 err = got_packidx_get_packfile_path(&pack_relpath,
1244 if (fstatat(packdir_fd, pack_relpath, &sb, 0) != -1) {
1246 pack_relpath = NULL;
1249 if (errno != ENOENT) {
1250 err = got_error_from_errno_fmt("fstatat: %s/%s/%s",
1251 got_repo_get_path_git_dir(repo),
1252 GOT_OBJECTS_PACK_DIR,
1258 err = remove_packidx(packdir_fd, dent->d_name);
1264 if (asprintf(&path, "%s/%s/%s",
1265 got_repo_get_path_git_dir(repo),
1266 GOT_OBJECTS_PACK_DIR,
1267 dent->d_name) == -1) {
1268 err = got_error_from_errno("asprintf");
1271 err = progress_cb(progress_arg, path);
1277 pack_relpath = NULL;
1280 if (packdir && closedir(packdir) != 0 && err == NULL)
1281 err = got_error_from_errno("closedir");