static int fsck_handle_ref(const char *refname, const struct object_id *oid, int flag, void *cb_data) { struct object *obj; obj = parse_object(oid); if (!obj) { if (is_promisor_object(oid)) { /* * Increment default_refs anyway, because this is a * valid ref. */ default_refs++; return 0; } error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid)); errors_found |= ERROR_REACHABLE; /* We'll continue with the rest despite the error.. */ return 0; } if (obj->type != OBJ_COMMIT && is_branch(refname)) { error("%s: not a commit", refname); errors_found |= ERROR_REFS; } default_refs++; obj->flags |= USED; if (name_objects) add_decoration(fsck_walk_options.object_names, obj, xstrdup(refname)); mark_object_reachable(obj); return 0; }
static inline void finish_object__ma(struct object *obj) { /* * Whether or not we try to dynamically fetch missing objects * from the server, we currently DO NOT have the object. We * can either print, allow (ignore), or conditionally allow * (ignore) them. */ switch (arg_missing_action) { case MA_ERROR: die("missing blob object '%s'", oid_to_hex(&obj->oid)); return; case MA_ALLOW_ANY: return; case MA_PRINT: oidset_insert(&missing_objects, &obj->oid); return; case MA_ALLOW_PROMISOR: if (is_promisor_object(&obj->oid)) return; die("unexpected missing blob object '%s'", oid_to_hex(&obj->oid)); return; default: BUG("unhandled missing_action"); return; } }
static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options) { struct object *parent = data; /* * The only case data is NULL or type is OBJ_ANY is when * mark_object_reachable() calls us. All the callers of * that function has non-NULL obj hence ... */ if (!obj) { /* ... these references to parent->fld are safe here */ printf("broken link from %7s %s\n", printable_type(parent), describe_object(parent)); printf("broken link from %7s %s\n", (type == OBJ_ANY ? "unknown" : type_name(type)), "unknown"); errors_found |= ERROR_REACHABLE; return 1; } if (type != OBJ_ANY && obj->type != type) /* ... and the reference to parent is safe here */ objerror(parent, "wrong object type in link"); if (obj->flags & REACHABLE) return 0; obj->flags |= REACHABLE; if (is_promisor_object(&obj->oid)) /* * Further recursion does not need to be performed on this * object since it is a promisor object (so it does not need to * be added to "pending"). */ return 0; if (!(obj->flags & HAS_OBJ)) { if (parent && !has_object_file(&obj->oid)) { printf("broken link from %7s %s\n", printable_type(parent), describe_object(parent)); printf(" to %7s %s\n", printable_type(obj), describe_object(obj)); errors_found |= ERROR_REACHABLE; } return 1; } add_object_array(obj, NULL, &pending); return 0; }
int fsck_finish(struct fsck_options *options) { int ret = 0; struct oidset_iter iter; const struct object_id *oid; oidset_iter_init(&gitmodules_found, &iter); while ((oid = oidset_iter_next(&iter))) { struct blob *blob; enum object_type type; unsigned long size; char *buf; if (oidset_contains(&gitmodules_done, oid)) continue; blob = lookup_blob(oid); if (!blob) { struct object *obj = lookup_unknown_object(oid->hash); ret |= report(options, obj, FSCK_MSG_GITMODULES_BLOB, "non-blob found at .gitmodules"); continue; } buf = read_object_file(oid, &type, &size); if (!buf) { if (is_promisor_object(&blob->object.oid)) continue; ret |= report(options, &blob->object, FSCK_MSG_GITMODULES_MISSING, "unable to read .gitmodules blob"); continue; } if (type == OBJ_BLOB) ret |= fsck_blob(blob, buf, size, options); else ret |= report(options, &blob->object, FSCK_MSG_GITMODULES_BLOB, "non-blob found at .gitmodules"); free(buf); } oidset_clear(&gitmodules_found); oidset_clear(&gitmodules_done); return ret; }
/* * Check a single reachable object */ static void check_reachable_object(struct object *obj) { /* * We obviously want the object to be parsed, * except if it was in a pack-file and we didn't * do a full fsck */ if (!(obj->flags & HAS_OBJ)) { if (is_promisor_object(&obj->oid)) return; if (has_sha1_pack(obj->oid.hash)) return; /* it is in pack - forget about it */ printf("missing %s %s\n", printable_type(obj), describe_object(obj)); errors_found |= ERROR_REACHABLE; return; } }
static void fsck_handle_reflog_oid(const char *refname, struct object_id *oid, timestamp_t timestamp) { struct object *obj; if (!is_null_oid(oid)) { obj = lookup_object(oid->hash); if (obj && (obj->flags & HAS_OBJ)) { if (timestamp && name_objects) add_decoration(fsck_walk_options.object_names, obj, xstrfmt("%s@{%"PRItime"}", refname, timestamp)); obj->flags |= USED; mark_object_reachable(obj); } else if (!is_promisor_object(oid)) { error("%s: invalid reflog entry %s", refname, oid_to_hex(oid)); errors_found |= ERROR_REACHABLE; } } }
int cmd_fsck(int argc, const char **argv, const char *prefix) { int i; struct alternate_object_database *alt; /* fsck knows how to handle missing promisor objects */ fetch_if_missing = 0; errors_found = 0; check_replace_refs = 0; argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); fsck_walk_options.walk = mark_object; fsck_obj_options.walk = mark_used; fsck_obj_options.error_func = fsck_error_func; if (check_strict) fsck_obj_options.strict = 1; if (show_progress == -1) show_progress = isatty(2); if (verbose) show_progress = 0; if (write_lost_and_found) { check_full = 1; include_reflogs = 0; } if (name_objects) fsck_walk_options.object_names = xcalloc(1, sizeof(struct decoration)); git_config(fsck_config, NULL); fsck_head_link(); if (connectivity_only) { for_each_loose_object(mark_loose_for_connectivity, NULL, 0); for_each_packed_object(mark_packed_for_connectivity, NULL, 0); } else { struct alternate_object_database *alt_odb_list; fsck_object_dir(get_object_directory()); prepare_alt_odb(the_repository); alt_odb_list = the_repository->objects->alt_odb_list; for (alt = alt_odb_list; alt; alt = alt->next) fsck_object_dir(alt->path); if (check_full) { struct packed_git *p; uint32_t total = 0, count = 0; struct progress *progress = NULL; if (show_progress) { for (p = get_packed_git(the_repository); p; p = p->next) { if (open_pack_index(p)) continue; total += p->num_objects; } progress = start_progress(_("Checking objects"), total); } for (p = get_packed_git(the_repository); p; p = p->next) { /* verify gives error messages itself */ if (verify_pack(p, fsck_obj_buffer, progress, count)) errors_found |= ERROR_PACK; count += p->num_objects; } stop_progress(&progress); } } for (i = 0; i < argc; i++) { const char *arg = argv[i]; struct object_id oid; if (!get_oid(arg, &oid)) { struct object *obj = lookup_object(oid.hash); if (!obj || !(obj->flags & HAS_OBJ)) { if (is_promisor_object(&oid)) continue; error("%s: object missing", oid_to_hex(&oid)); errors_found |= ERROR_OBJECT; continue; } obj->flags |= USED; if (name_objects) add_decoration(fsck_walk_options.object_names, obj, xstrdup(arg)); mark_object_reachable(obj); continue; } error("invalid parameter: expected sha1, got '%s'", arg); errors_found |= ERROR_OBJECT; } /* * If we've not been given any explicit head information, do the * default ones from .git/refs. We also consider the index file * in this case (ie this implies --cache). */ if (!argc) { get_default_heads(); keep_cache_objects = 1; } if (keep_cache_objects) { verify_index_checksum = 1; verify_ce_order = 1; read_cache(); for (i = 0; i < active_nr; i++) { unsigned int mode; struct blob *blob; struct object *obj; mode = active_cache[i]->ce_mode; if (S_ISGITLINK(mode)) continue; blob = lookup_blob(&active_cache[i]->oid); if (!blob) continue; obj = &blob->object; obj->flags |= USED; if (name_objects) add_decoration(fsck_walk_options.object_names, obj, xstrfmt(":%s", active_cache[i]->name)); mark_object_reachable(obj); } if (active_cache_tree) fsck_cache_tree(active_cache_tree); } check_connectivity(); return errors_found; }