builtin / fsck.con commit Merge branch 'nd/shallow-fixup' (3c9979b)
   1#include "builtin.h"
   2#include "cache.h"
   3#include "commit.h"
   4#include "tree.h"
   5#include "blob.h"
   6#include "tag.h"
   7#include "refs.h"
   8#include "pack.h"
   9#include "cache-tree.h"
  10#include "tree-walk.h"
  11#include "fsck.h"
  12#include "parse-options.h"
  13#include "dir.h"
  14#include "progress.h"
  15#include "streaming.h"
  16#include "decorate.h"
  17
  18#define REACHABLE 0x0001
  19#define SEEN      0x0002
  20#define HAS_OBJ   0x0004
  21
  22static int show_root;
  23static int show_tags;
  24static int show_unreachable;
  25static int include_reflogs = 1;
  26static int check_full = 1;
  27static int connectivity_only;
  28static int check_strict;
  29static int keep_cache_objects;
  30static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT;
  31static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT;
  32static struct object_id head_oid;
  33static const char *head_points_at;
  34static int errors_found;
  35static int write_lost_and_found;
  36static int verbose;
  37static int show_progress = -1;
  38static int show_dangling = 1;
  39static int name_objects;
  40#define ERROR_OBJECT 01
  41#define ERROR_REACHABLE 02
  42#define ERROR_PACK 04
  43#define ERROR_REFS 010
  44
  45static const char *describe_object(struct object *obj)
  46{
  47        static struct strbuf buf = STRBUF_INIT;
  48        char *name = name_objects ?
  49                lookup_decoration(fsck_walk_options.object_names, obj) : NULL;
  50
  51        strbuf_reset(&buf);
  52        strbuf_addstr(&buf, oid_to_hex(&obj->oid));
  53        if (name)
  54                strbuf_addf(&buf, " (%s)", name);
  55
  56        return buf.buf;
  57}
  58
  59static int fsck_config(const char *var, const char *value, void *cb)
  60{
  61        if (strcmp(var, "fsck.skiplist") == 0) {
  62                const char *path;
  63                struct strbuf sb = STRBUF_INIT;
  64
  65                if (git_config_pathname(&path, var, value))
  66                        return 1;
  67                strbuf_addf(&sb, "skiplist=%s", path);
  68                free((char *)path);
  69                fsck_set_msg_types(&fsck_obj_options, sb.buf);
  70                strbuf_release(&sb);
  71                return 0;
  72        }
  73
  74        if (skip_prefix(var, "fsck.", &var)) {
  75                fsck_set_msg_type(&fsck_obj_options, var, value);
  76                return 0;
  77        }
  78
  79        return git_default_config(var, value, cb);
  80}
  81
  82static void objreport(struct object *obj, const char *msg_type,
  83                        const char *err)
  84{
  85        fprintf(stderr, "%s in %s %s: %s\n",
  86                msg_type, typename(obj->type), describe_object(obj), err);
  87}
  88
  89static int objerror(struct object *obj, const char *err)
  90{
  91        errors_found |= ERROR_OBJECT;
  92        objreport(obj, "error", err);
  93        return -1;
  94}
  95
  96static int fsck_error_func(struct fsck_options *o,
  97        struct object *obj, int type, const char *message)
  98{
  99        objreport(obj, (type == FSCK_WARN) ? "warning" : "error", message);
 100        return (type == FSCK_WARN) ? 0 : 1;
 101}
 102
 103static struct object_array pending;
 104
 105static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options)
 106{
 107        struct object *parent = data;
 108
 109        /*
 110         * The only case data is NULL or type is OBJ_ANY is when
 111         * mark_object_reachable() calls us.  All the callers of
 112         * that function has non-NULL obj hence ...
 113         */
 114        if (!obj) {
 115                /* ... these references to parent->fld are safe here */
 116                printf("broken link from %7s %s\n",
 117                           typename(parent->type), describe_object(parent));
 118                printf("broken link from %7s %s\n",
 119                           (type == OBJ_ANY ? "unknown" : typename(type)), "unknown");
 120                errors_found |= ERROR_REACHABLE;
 121                return 1;
 122        }
 123
 124        if (type != OBJ_ANY && obj->type != type)
 125                /* ... and the reference to parent is safe here */
 126                objerror(parent, "wrong object type in link");
 127
 128        if (obj->flags & REACHABLE)
 129                return 0;
 130        obj->flags |= REACHABLE;
 131        if (!(obj->flags & HAS_OBJ)) {
 132                if (parent && !has_object_file(&obj->oid)) {
 133                        printf("broken link from %7s %s\n",
 134                                 typename(parent->type), describe_object(parent));
 135                        printf("              to %7s %s\n",
 136                                 typename(obj->type), describe_object(obj));
 137                        errors_found |= ERROR_REACHABLE;
 138                }
 139                return 1;
 140        }
 141
 142        add_object_array(obj, NULL, &pending);
 143        return 0;
 144}
 145
 146static void mark_object_reachable(struct object *obj)
 147{
 148        mark_object(obj, OBJ_ANY, NULL, NULL);
 149}
 150
 151static int traverse_one_object(struct object *obj)
 152{
 153        int result;
 154        struct tree *tree = NULL;
 155
 156        if (obj->type == OBJ_TREE) {
 157                tree = (struct tree *)obj;
 158                if (parse_tree(tree) < 0)
 159                        return 1; /* error already displayed */
 160        }
 161        result = fsck_walk(obj, obj, &fsck_walk_options);
 162        if (tree)
 163                free_tree_buffer(tree);
 164        return result;
 165}
 166
 167static int traverse_reachable(void)
 168{
 169        struct progress *progress = NULL;
 170        unsigned int nr = 0;
 171        int result = 0;
 172        if (show_progress)
 173                progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);
 174        while (pending.nr) {
 175                struct object_array_entry *entry;
 176                struct object *obj;
 177
 178                entry = pending.objects + --pending.nr;
 179                obj = entry->item;
 180                result |= traverse_one_object(obj);
 181                display_progress(progress, ++nr);
 182        }
 183        stop_progress(&progress);
 184        return !!result;
 185}
 186
 187static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options)
 188{
 189        if (!obj)
 190                return 1;
 191        obj->used = 1;
 192        return 0;
 193}
 194
 195/*
 196 * Check a single reachable object
 197 */
 198static void check_reachable_object(struct object *obj)
 199{
 200        /*
 201         * We obviously want the object to be parsed,
 202         * except if it was in a pack-file and we didn't
 203         * do a full fsck
 204         */
 205        if (!(obj->flags & HAS_OBJ)) {
 206                if (has_sha1_pack(obj->oid.hash))
 207                        return; /* it is in pack - forget about it */
 208                if (connectivity_only && has_object_file(&obj->oid))
 209                        return;
 210                printf("missing %s %s\n", typename(obj->type),
 211                        describe_object(obj));
 212                errors_found |= ERROR_REACHABLE;
 213                return;
 214        }
 215}
 216
 217/*
 218 * Check a single unreachable object
 219 */
 220static void check_unreachable_object(struct object *obj)
 221{
 222        /*
 223         * Missing unreachable object? Ignore it. It's not like
 224         * we miss it (since it can't be reached), nor do we want
 225         * to complain about it being unreachable (since it does
 226         * not exist).
 227         */
 228        if (!obj->parsed)
 229                return;
 230
 231        /*
 232         * Unreachable object that exists? Show it if asked to,
 233         * since this is something that is prunable.
 234         */
 235        if (show_unreachable) {
 236                printf("unreachable %s %s\n", typename(obj->type),
 237                        describe_object(obj));
 238                return;
 239        }
 240
 241        /*
 242         * "!used" means that nothing at all points to it, including
 243         * other unreachable objects. In other words, it's the "tip"
 244         * of some set of unreachable objects, usually a commit that
 245         * got dropped.
 246         *
 247         * Such starting points are more interesting than some random
 248         * set of unreachable objects, so we show them even if the user
 249         * hasn't asked for _all_ unreachable objects. If you have
 250         * deleted a branch by mistake, this is a prime candidate to
 251         * start looking at, for example.
 252         */
 253        if (!obj->used) {
 254                if (show_dangling)
 255                        printf("dangling %s %s\n", typename(obj->type),
 256                               describe_object(obj));
 257                if (write_lost_and_found) {
 258                        char *filename = git_pathdup("lost-found/%s/%s",
 259                                obj->type == OBJ_COMMIT ? "commit" : "other",
 260                                describe_object(obj));
 261                        FILE *f;
 262
 263                        if (safe_create_leading_directories_const(filename)) {
 264                                error("Could not create lost-found");
 265                                free(filename);
 266                                return;
 267                        }
 268                        if (!(f = fopen(filename, "w")))
 269                                die_errno("Could not open '%s'", filename);
 270                        if (obj->type == OBJ_BLOB) {
 271                                if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1))
 272                                        die_errno("Could not write '%s'", filename);
 273                        } else
 274                                fprintf(f, "%s\n", describe_object(obj));
 275                        if (fclose(f))
 276                                die_errno("Could not finish '%s'",
 277                                          filename);
 278                        free(filename);
 279                }
 280                return;
 281        }
 282
 283        /*
 284         * Otherwise? It's there, it's unreachable, and some other unreachable
 285         * object points to it. Ignore it - it's not interesting, and we showed
 286         * all the interesting cases above.
 287         */
 288}
 289
 290static void check_object(struct object *obj)
 291{
 292        if (verbose)
 293                fprintf(stderr, "Checking %s\n", describe_object(obj));
 294
 295        if (obj->flags & REACHABLE)
 296                check_reachable_object(obj);
 297        else
 298                check_unreachable_object(obj);
 299}
 300
 301static void check_connectivity(void)
 302{
 303        int i, max;
 304
 305        /* Traverse the pending reachable objects */
 306        traverse_reachable();
 307
 308        /* Look up all the requirements, warn about missing objects.. */
 309        max = get_max_object_index();
 310        if (verbose)
 311                fprintf(stderr, "Checking connectivity (%d objects)\n", max);
 312
 313        for (i = 0; i < max; i++) {
 314                struct object *obj = get_indexed_object(i);
 315
 316                if (obj)
 317                        check_object(obj);
 318        }
 319}
 320
 321static int fsck_obj(struct object *obj)
 322{
 323        if (obj->flags & SEEN)
 324                return 0;
 325        obj->flags |= SEEN;
 326
 327        if (verbose)
 328                fprintf(stderr, "Checking %s %s\n",
 329                        typename(obj->type), describe_object(obj));
 330
 331        if (fsck_walk(obj, NULL, &fsck_obj_options))
 332                objerror(obj, "broken links");
 333        if (fsck_object(obj, NULL, 0, &fsck_obj_options))
 334                return -1;
 335
 336        if (obj->type == OBJ_TREE) {
 337                struct tree *item = (struct tree *) obj;
 338
 339                free_tree_buffer(item);
 340        }
 341
 342        if (obj->type == OBJ_COMMIT) {
 343                struct commit *commit = (struct commit *) obj;
 344
 345                free_commit_buffer(commit);
 346
 347                if (!commit->parents && show_root)
 348                        printf("root %s\n", describe_object(&commit->object));
 349        }
 350
 351        if (obj->type == OBJ_TAG) {
 352                struct tag *tag = (struct tag *) obj;
 353
 354                if (show_tags && tag->tagged) {
 355                        printf("tagged %s %s", typename(tag->tagged->type),
 356                                describe_object(tag->tagged));
 357                        printf(" (%s) in %s\n", tag->tag,
 358                                describe_object(&tag->object));
 359                }
 360        }
 361
 362        return 0;
 363}
 364
 365static int fsck_sha1(const unsigned char *sha1)
 366{
 367        struct object *obj = parse_object(sha1);
 368        if (!obj) {
 369                errors_found |= ERROR_OBJECT;
 370                return error("%s: object corrupt or missing",
 371                             sha1_to_hex(sha1));
 372        }
 373        obj->flags |= HAS_OBJ;
 374        return fsck_obj(obj);
 375}
 376
 377static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type,
 378                           unsigned long size, void *buffer, int *eaten)
 379{
 380        /*
 381         * Note, buffer may be NULL if type is OBJ_BLOB. See
 382         * verify_packfile(), data_valid variable for details.
 383         */
 384        struct object *obj;
 385        obj = parse_object_buffer(sha1, type, size, buffer, eaten);
 386        if (!obj) {
 387                errors_found |= ERROR_OBJECT;
 388                return error("%s: object corrupt or missing", sha1_to_hex(sha1));
 389        }
 390        obj->flags = HAS_OBJ;
 391        return fsck_obj(obj);
 392}
 393
 394static int default_refs;
 395
 396static void fsck_handle_reflog_sha1(const char *refname, unsigned char *sha1,
 397        unsigned long timestamp)
 398{
 399        struct object *obj;
 400
 401        if (!is_null_sha1(sha1)) {
 402                obj = lookup_object(sha1);
 403                if (obj) {
 404                        if (timestamp && name_objects)
 405                                add_decoration(fsck_walk_options.object_names,
 406                                        obj,
 407                                        xstrfmt("%s@{%ld}", refname, timestamp));
 408                        obj->used = 1;
 409                        mark_object_reachable(obj);
 410                } else {
 411                        error("%s: invalid reflog entry %s", refname, sha1_to_hex(sha1));
 412                        errors_found |= ERROR_REACHABLE;
 413                }
 414        }
 415}
 416
 417static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
 418                const char *email, unsigned long timestamp, int tz,
 419                const char *message, void *cb_data)
 420{
 421        const char *refname = cb_data;
 422
 423        if (verbose)
 424                fprintf(stderr, "Checking reflog %s->%s\n",
 425                        sha1_to_hex(osha1), sha1_to_hex(nsha1));
 426
 427        fsck_handle_reflog_sha1(refname, osha1, 0);
 428        fsck_handle_reflog_sha1(refname, nsha1, timestamp);
 429        return 0;
 430}
 431
 432static int fsck_handle_reflog(const char *logname, const struct object_id *oid,
 433                              int flag, void *cb_data)
 434{
 435        for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname);
 436        return 0;
 437}
 438
 439static int fsck_handle_ref(const char *refname, const struct object_id *oid,
 440                           int flag, void *cb_data)
 441{
 442        struct object *obj;
 443
 444        obj = parse_object(oid->hash);
 445        if (!obj) {
 446                error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid));
 447                errors_found |= ERROR_REACHABLE;
 448                /* We'll continue with the rest despite the error.. */
 449                return 0;
 450        }
 451        if (obj->type != OBJ_COMMIT && is_branch(refname)) {
 452                error("%s: not a commit", refname);
 453                errors_found |= ERROR_REFS;
 454        }
 455        default_refs++;
 456        obj->used = 1;
 457        if (name_objects)
 458                add_decoration(fsck_walk_options.object_names,
 459                        obj, xstrdup(refname));
 460        mark_object_reachable(obj);
 461
 462        return 0;
 463}
 464
 465static void get_default_heads(void)
 466{
 467        if (head_points_at && !is_null_oid(&head_oid))
 468                fsck_handle_ref("HEAD", &head_oid, 0, NULL);
 469        for_each_rawref(fsck_handle_ref, NULL);
 470        if (include_reflogs)
 471                for_each_reflog(fsck_handle_reflog, NULL);
 472
 473        /*
 474         * Not having any default heads isn't really fatal, but
 475         * it does mean that "--unreachable" no longer makes any
 476         * sense (since in this case everything will obviously
 477         * be unreachable by definition.
 478         *
 479         * Showing dangling objects is valid, though (as those
 480         * dangling objects are likely lost heads).
 481         *
 482         * So we just print a warning about it, and clear the
 483         * "show_unreachable" flag.
 484         */
 485        if (!default_refs) {
 486                fprintf(stderr, "notice: No default references\n");
 487                show_unreachable = 0;
 488        }
 489}
 490
 491static int fsck_loose(const unsigned char *sha1, const char *path, void *data)
 492{
 493        if (fsck_sha1(sha1))
 494                errors_found |= ERROR_OBJECT;
 495        return 0;
 496}
 497
 498static int fsck_cruft(const char *basename, const char *path, void *data)
 499{
 500        if (!starts_with(basename, "tmp_obj_"))
 501                fprintf(stderr, "bad sha1 file: %s\n", path);
 502        return 0;
 503}
 504
 505static int fsck_subdir(int nr, const char *path, void *progress)
 506{
 507        display_progress(progress, nr + 1);
 508        return 0;
 509}
 510
 511static void fsck_object_dir(const char *path)
 512{
 513        struct progress *progress = NULL;
 514
 515        if (verbose)
 516                fprintf(stderr, "Checking object directory\n");
 517
 518        if (show_progress)
 519                progress = start_progress(_("Checking object directories"), 256);
 520
 521        for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir,
 522                                      progress);
 523        display_progress(progress, 256);
 524        stop_progress(&progress);
 525}
 526
 527static int fsck_head_link(void)
 528{
 529        int null_is_error = 0;
 530
 531        if (verbose)
 532                fprintf(stderr, "Checking HEAD link\n");
 533
 534        head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid.hash, NULL);
 535        if (!head_points_at) {
 536                errors_found |= ERROR_REFS;
 537                return error("Invalid HEAD");
 538        }
 539        if (!strcmp(head_points_at, "HEAD"))
 540                /* detached HEAD */
 541                null_is_error = 1;
 542        else if (!starts_with(head_points_at, "refs/heads/")) {
 543                errors_found |= ERROR_REFS;
 544                return error("HEAD points to something strange (%s)",
 545                             head_points_at);
 546        }
 547        if (is_null_oid(&head_oid)) {
 548                if (null_is_error) {
 549                        errors_found |= ERROR_REFS;
 550                        return error("HEAD: detached HEAD points at nothing");
 551                }
 552                fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n",
 553                        head_points_at + 11);
 554        }
 555        return 0;
 556}
 557
 558static int fsck_cache_tree(struct cache_tree *it)
 559{
 560        int i;
 561        int err = 0;
 562
 563        if (verbose)
 564                fprintf(stderr, "Checking cache tree\n");
 565
 566        if (0 <= it->entry_count) {
 567                struct object *obj = parse_object(it->sha1);
 568                if (!obj) {
 569                        error("%s: invalid sha1 pointer in cache-tree",
 570                              sha1_to_hex(it->sha1));
 571                        errors_found |= ERROR_REFS;
 572                        return 1;
 573                }
 574                obj->used = 1;
 575                if (name_objects)
 576                        add_decoration(fsck_walk_options.object_names,
 577                                obj, xstrdup(":"));
 578                mark_object_reachable(obj);
 579                if (obj->type != OBJ_TREE)
 580                        err |= objerror(obj, "non-tree in cache-tree");
 581        }
 582        for (i = 0; i < it->subtree_nr; i++)
 583                err |= fsck_cache_tree(it->down[i]->cache_tree);
 584        return err;
 585}
 586
 587static char const * const fsck_usage[] = {
 588        N_("git fsck [<options>] [<object>...]"),
 589        NULL
 590};
 591
 592static struct option fsck_opts[] = {
 593        OPT__VERBOSE(&verbose, N_("be verbose")),
 594        OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")),
 595        OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")),
 596        OPT_BOOL(0, "tags", &show_tags, N_("report tags")),
 597        OPT_BOOL(0, "root", &show_root, N_("report root nodes")),
 598        OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")),
 599        OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")),
 600        OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")),
 601        OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")),
 602        OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")),
 603        OPT_BOOL(0, "lost-found", &write_lost_and_found,
 604                                N_("write dangling objects in .git/lost-found")),
 605        OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
 606        OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")),
 607        OPT_END(),
 608};
 609
 610int cmd_fsck(int argc, const char **argv, const char *prefix)
 611{
 612        int i, heads;
 613        struct alternate_object_database *alt;
 614
 615        errors_found = 0;
 616        check_replace_refs = 0;
 617
 618        argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0);
 619
 620        fsck_walk_options.walk = mark_object;
 621        fsck_obj_options.walk = mark_used;
 622        fsck_obj_options.error_func = fsck_error_func;
 623        if (check_strict)
 624                fsck_obj_options.strict = 1;
 625
 626        if (show_progress == -1)
 627                show_progress = isatty(2);
 628        if (verbose)
 629                show_progress = 0;
 630
 631        if (write_lost_and_found) {
 632                check_full = 1;
 633                include_reflogs = 0;
 634        }
 635
 636        if (name_objects)
 637                fsck_walk_options.object_names =
 638                        xcalloc(1, sizeof(struct decoration));
 639
 640        git_config(fsck_config, NULL);
 641
 642        fsck_head_link();
 643        if (!connectivity_only) {
 644                fsck_object_dir(get_object_directory());
 645
 646                prepare_alt_odb();
 647                for (alt = alt_odb_list; alt; alt = alt->next)
 648                        fsck_object_dir(alt->path);
 649        }
 650
 651        if (check_full) {
 652                struct packed_git *p;
 653                uint32_t total = 0, count = 0;
 654                struct progress *progress = NULL;
 655
 656                prepare_packed_git();
 657
 658                if (show_progress) {
 659                        for (p = packed_git; p; p = p->next) {
 660                                if (open_pack_index(p))
 661                                        continue;
 662                                total += p->num_objects;
 663                        }
 664
 665                        progress = start_progress(_("Checking objects"), total);
 666                }
 667                for (p = packed_git; p; p = p->next) {
 668                        /* verify gives error messages itself */
 669                        if (verify_pack(p, fsck_obj_buffer,
 670                                        progress, count))
 671                                errors_found |= ERROR_PACK;
 672                        count += p->num_objects;
 673                }
 674                stop_progress(&progress);
 675        }
 676
 677        heads = 0;
 678        for (i = 0; i < argc; i++) {
 679                const char *arg = argv[i];
 680                unsigned char sha1[20];
 681                if (!get_sha1(arg, sha1)) {
 682                        struct object *obj = lookup_object(sha1);
 683
 684                        /* Error is printed by lookup_object(). */
 685                        if (!obj)
 686                                continue;
 687
 688                        obj->used = 1;
 689                        if (name_objects)
 690                                add_decoration(fsck_walk_options.object_names,
 691                                        obj, xstrdup(arg));
 692                        mark_object_reachable(obj);
 693                        heads++;
 694                        continue;
 695                }
 696                error("invalid parameter: expected sha1, got '%s'", arg);
 697        }
 698
 699        /*
 700         * If we've not been given any explicit head information, do the
 701         * default ones from .git/refs. We also consider the index file
 702         * in this case (ie this implies --cache).
 703         */
 704        if (!heads) {
 705                get_default_heads();
 706                keep_cache_objects = 1;
 707        }
 708
 709        if (keep_cache_objects) {
 710                read_cache();
 711                for (i = 0; i < active_nr; i++) {
 712                        unsigned int mode;
 713                        struct blob *blob;
 714                        struct object *obj;
 715
 716                        mode = active_cache[i]->ce_mode;
 717                        if (S_ISGITLINK(mode))
 718                                continue;
 719                        blob = lookup_blob(active_cache[i]->oid.hash);
 720                        if (!blob)
 721                                continue;
 722                        obj = &blob->object;
 723                        obj->used = 1;
 724                        if (name_objects)
 725                                add_decoration(fsck_walk_options.object_names,
 726                                        obj,
 727                                        xstrfmt(":%s", active_cache[i]->name));
 728                        mark_object_reachable(obj);
 729                }
 730                if (active_cache_tree)
 731                        fsck_cache_tree(active_cache_tree);
 732        }
 733
 734        check_connectivity();
 735        return errors_found;
 736}