1feb6142f4ab16c900715f6df2850b019787403c
1#include "builtin.h"
2#include "cache.h"
3#include "repository.h"
4#include "config.h"
5#include "commit.h"
6#include "tree.h"
7#include "blob.h"
8#include "tag.h"
9#include "refs.h"
10#include "pack.h"
11#include "cache-tree.h"
12#include "tree-walk.h"
13#include "fsck.h"
14#include "parse-options.h"
15#include "dir.h"
16#include "progress.h"
17#include "streaming.h"
18#include "decorate.h"
19#include "packfile.h"
20#include "object-store.h"
21#include "run-command.h"
22
23#define REACHABLE 0x0001
24#define SEEN 0x0002
25#define HAS_OBJ 0x0004
26/* This flag is set if something points to this object. */
27#define USED 0x0008
28
29static int show_root;
30static int show_tags;
31static int show_unreachable;
32static int include_reflogs = 1;
33static int check_full = 1;
34static int connectivity_only;
35static int check_strict;
36static int keep_cache_objects;
37static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT;
38static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT;
39static struct object_id head_oid;
40static const char *head_points_at;
41static int errors_found;
42static int write_lost_and_found;
43static int verbose;
44static int show_progress = -1;
45static int show_dangling = 1;
46static int name_objects;
47#define ERROR_OBJECT 01
48#define ERROR_REACHABLE 02
49#define ERROR_PACK 04
50#define ERROR_REFS 010
51#define ERROR_COMMIT_GRAPH 020
52
53static const char *describe_object(struct object *obj)
54{
55 static struct strbuf bufs[] = {
56 STRBUF_INIT, STRBUF_INIT, STRBUF_INIT, STRBUF_INIT
57 };
58 static int b = 0;
59 struct strbuf *buf;
60 char *name = NULL;
61
62 if (name_objects)
63 name = lookup_decoration(fsck_walk_options.object_names, obj);
64
65 buf = bufs + b;
66 b = (b + 1) % ARRAY_SIZE(bufs);
67 strbuf_reset(buf);
68 strbuf_addstr(buf, oid_to_hex(&obj->oid));
69 if (name)
70 strbuf_addf(buf, " (%s)", name);
71
72 return buf->buf;
73}
74
75static const char *printable_type(struct object *obj)
76{
77 const char *ret;
78
79 if (obj->type == OBJ_NONE) {
80 enum object_type type = oid_object_info(the_repository,
81 &obj->oid, NULL);
82 if (type > 0)
83 object_as_type(the_repository, obj, type, 0);
84 }
85
86 ret = type_name(obj->type);
87 if (!ret)
88 ret = "unknown";
89
90 return ret;
91}
92
93static int fsck_config(const char *var, const char *value, void *cb)
94{
95 if (strcmp(var, "fsck.skiplist") == 0) {
96 const char *path;
97 struct strbuf sb = STRBUF_INIT;
98
99 if (git_config_pathname(&path, var, value))
100 return 1;
101 strbuf_addf(&sb, "skiplist=%s", path);
102 free((char *)path);
103 fsck_set_msg_types(&fsck_obj_options, sb.buf);
104 strbuf_release(&sb);
105 return 0;
106 }
107
108 if (skip_prefix(var, "fsck.", &var)) {
109 fsck_set_msg_type(&fsck_obj_options, var, value);
110 return 0;
111 }
112
113 return git_default_config(var, value, cb);
114}
115
116static int objerror(struct object *obj, const char *err)
117{
118 errors_found |= ERROR_OBJECT;
119 fprintf_ln(stderr, "error in %s %s: %s",
120 printable_type(obj), describe_object(obj), err);
121 return -1;
122}
123
124static int fsck_error_func(struct fsck_options *o,
125 struct object *obj, int type, const char *message)
126{
127 switch (type) {
128 case FSCK_WARN:
129 fprintf_ln(stderr, "warning in %s %s: %s",
130 printable_type(obj), describe_object(obj), message);
131 return 0;
132 case FSCK_ERROR:
133 fprintf_ln(stderr, "error in %s %s: %s",
134 printable_type(obj), describe_object(obj), message);
135 return 1;
136 default:
137 BUG("%d (FSCK_IGNORE?) should never trigger this callback", type);
138 }
139}
140
141static struct object_array pending;
142
143static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options)
144{
145 struct object *parent = data;
146
147 /*
148 * The only case data is NULL or type is OBJ_ANY is when
149 * mark_object_reachable() calls us. All the callers of
150 * that function has non-NULL obj hence ...
151 */
152 if (!obj) {
153 /* ... these references to parent->fld are safe here */
154 printf("broken link from %7s %s\n",
155 printable_type(parent), describe_object(parent));
156 printf("broken link from %7s %s\n",
157 (type == OBJ_ANY ? "unknown" : type_name(type)), "unknown");
158 errors_found |= ERROR_REACHABLE;
159 return 1;
160 }
161
162 if (type != OBJ_ANY && obj->type != type)
163 /* ... and the reference to parent is safe here */
164 objerror(parent, "wrong object type in link");
165
166 if (obj->flags & REACHABLE)
167 return 0;
168 obj->flags |= REACHABLE;
169
170 if (is_promisor_object(&obj->oid))
171 /*
172 * Further recursion does not need to be performed on this
173 * object since it is a promisor object (so it does not need to
174 * be added to "pending").
175 */
176 return 0;
177
178 if (!(obj->flags & HAS_OBJ)) {
179 if (parent && !has_object_file(&obj->oid)) {
180 printf_ln("broken link from %7s %s\n"
181 " to %7s %s",
182 printable_type(parent),
183 describe_object(parent),
184 printable_type(obj),
185 describe_object(obj));
186 errors_found |= ERROR_REACHABLE;
187 }
188 return 1;
189 }
190
191 add_object_array(obj, NULL, &pending);
192 return 0;
193}
194
195static void mark_object_reachable(struct object *obj)
196{
197 mark_object(obj, OBJ_ANY, NULL, NULL);
198}
199
200static int traverse_one_object(struct object *obj)
201{
202 int result = fsck_walk(obj, obj, &fsck_walk_options);
203
204 if (obj->type == OBJ_TREE) {
205 struct tree *tree = (struct tree *)obj;
206 free_tree_buffer(tree);
207 }
208 return result;
209}
210
211static int traverse_reachable(void)
212{
213 struct progress *progress = NULL;
214 unsigned int nr = 0;
215 int result = 0;
216 if (show_progress)
217 progress = start_delayed_progress(_("Checking connectivity"), 0);
218 while (pending.nr) {
219 result |= traverse_one_object(object_array_pop(&pending));
220 display_progress(progress, ++nr);
221 }
222 stop_progress(&progress);
223 return !!result;
224}
225
226static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options)
227{
228 if (!obj)
229 return 1;
230 obj->flags |= USED;
231 return 0;
232}
233
234/*
235 * Check a single reachable object
236 */
237static void check_reachable_object(struct object *obj)
238{
239 /*
240 * We obviously want the object to be parsed,
241 * except if it was in a pack-file and we didn't
242 * do a full fsck
243 */
244 if (!(obj->flags & HAS_OBJ)) {
245 if (is_promisor_object(&obj->oid))
246 return;
247 if (has_object_pack(&obj->oid))
248 return; /* it is in pack - forget about it */
249 printf("missing %s %s\n", printable_type(obj),
250 describe_object(obj));
251 errors_found |= ERROR_REACHABLE;
252 return;
253 }
254}
255
256/*
257 * Check a single unreachable object
258 */
259static void check_unreachable_object(struct object *obj)
260{
261 /*
262 * Missing unreachable object? Ignore it. It's not like
263 * we miss it (since it can't be reached), nor do we want
264 * to complain about it being unreachable (since it does
265 * not exist).
266 */
267 if (!(obj->flags & HAS_OBJ))
268 return;
269
270 /*
271 * Unreachable object that exists? Show it if asked to,
272 * since this is something that is prunable.
273 */
274 if (show_unreachable) {
275 printf("unreachable %s %s\n", printable_type(obj),
276 describe_object(obj));
277 return;
278 }
279
280 /*
281 * "!USED" means that nothing at all points to it, including
282 * other unreachable objects. In other words, it's the "tip"
283 * of some set of unreachable objects, usually a commit that
284 * got dropped.
285 *
286 * Such starting points are more interesting than some random
287 * set of unreachable objects, so we show them even if the user
288 * hasn't asked for _all_ unreachable objects. If you have
289 * deleted a branch by mistake, this is a prime candidate to
290 * start looking at, for example.
291 */
292 if (!(obj->flags & USED)) {
293 if (show_dangling)
294 printf("dangling %s %s\n", printable_type(obj),
295 describe_object(obj));
296 if (write_lost_and_found) {
297 char *filename = git_pathdup("lost-found/%s/%s",
298 obj->type == OBJ_COMMIT ? "commit" : "other",
299 describe_object(obj));
300 FILE *f;
301
302 if (safe_create_leading_directories_const(filename)) {
303 error("Could not create lost-found");
304 free(filename);
305 return;
306 }
307 f = xfopen(filename, "w");
308 if (obj->type == OBJ_BLOB) {
309 if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1))
310 die_errno("Could not write '%s'", filename);
311 } else
312 fprintf(f, "%s\n", describe_object(obj));
313 if (fclose(f))
314 die_errno("Could not finish '%s'",
315 filename);
316 free(filename);
317 }
318 return;
319 }
320
321 /*
322 * Otherwise? It's there, it's unreachable, and some other unreachable
323 * object points to it. Ignore it - it's not interesting, and we showed
324 * all the interesting cases above.
325 */
326}
327
328static void check_object(struct object *obj)
329{
330 if (verbose)
331 fprintf(stderr, "Checking %s\n", describe_object(obj));
332
333 if (obj->flags & REACHABLE)
334 check_reachable_object(obj);
335 else
336 check_unreachable_object(obj);
337}
338
339static void check_connectivity(void)
340{
341 int i, max;
342
343 /* Traverse the pending reachable objects */
344 traverse_reachable();
345
346 /* Look up all the requirements, warn about missing objects.. */
347 max = get_max_object_index();
348 if (verbose)
349 fprintf(stderr, "Checking connectivity (%d objects)\n", max);
350
351 for (i = 0; i < max; i++) {
352 struct object *obj = get_indexed_object(i);
353
354 if (obj)
355 check_object(obj);
356 }
357}
358
359static int fsck_obj(struct object *obj, void *buffer, unsigned long size)
360{
361 int err;
362
363 if (obj->flags & SEEN)
364 return 0;
365 obj->flags |= SEEN;
366
367 if (verbose)
368 fprintf(stderr, "Checking %s %s\n",
369 printable_type(obj), describe_object(obj));
370
371 if (fsck_walk(obj, NULL, &fsck_obj_options))
372 objerror(obj, "broken links");
373 err = fsck_object(obj, buffer, size, &fsck_obj_options);
374 if (err)
375 goto out;
376
377 if (obj->type == OBJ_COMMIT) {
378 struct commit *commit = (struct commit *) obj;
379
380 if (!commit->parents && show_root)
381 printf("root %s\n", describe_object(&commit->object));
382 }
383
384 if (obj->type == OBJ_TAG) {
385 struct tag *tag = (struct tag *) obj;
386
387 if (show_tags && tag->tagged) {
388 printf_ln("tagged %s %s (%s) in %s",
389 printable_type(tag->tagged),
390 describe_object(tag->tagged),
391 tag->tag,
392 describe_object(&tag->object));
393 }
394 }
395
396out:
397 if (obj->type == OBJ_TREE)
398 free_tree_buffer((struct tree *)obj);
399 if (obj->type == OBJ_COMMIT)
400 free_commit_buffer((struct commit *)obj);
401 return err;
402}
403
404static int fsck_obj_buffer(const struct object_id *oid, enum object_type type,
405 unsigned long size, void *buffer, int *eaten)
406{
407 /*
408 * Note, buffer may be NULL if type is OBJ_BLOB. See
409 * verify_packfile(), data_valid variable for details.
410 */
411 struct object *obj;
412 obj = parse_object_buffer(the_repository, oid, type, size, buffer,
413 eaten);
414 if (!obj) {
415 errors_found |= ERROR_OBJECT;
416 return error("%s: object corrupt or missing", oid_to_hex(oid));
417 }
418 obj->flags &= ~(REACHABLE | SEEN);
419 obj->flags |= HAS_OBJ;
420 return fsck_obj(obj, buffer, size);
421}
422
423static int default_refs;
424
425static void fsck_handle_reflog_oid(const char *refname, struct object_id *oid,
426 timestamp_t timestamp)
427{
428 struct object *obj;
429
430 if (!is_null_oid(oid)) {
431 obj = lookup_object(the_repository, oid->hash);
432 if (obj && (obj->flags & HAS_OBJ)) {
433 if (timestamp && name_objects)
434 add_decoration(fsck_walk_options.object_names,
435 obj,
436 xstrfmt("%s@{%"PRItime"}", refname, timestamp));
437 obj->flags |= USED;
438 mark_object_reachable(obj);
439 } else if (!is_promisor_object(oid)) {
440 error("%s: invalid reflog entry %s", refname, oid_to_hex(oid));
441 errors_found |= ERROR_REACHABLE;
442 }
443 }
444}
445
446static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid,
447 const char *email, timestamp_t timestamp, int tz,
448 const char *message, void *cb_data)
449{
450 const char *refname = cb_data;
451
452 if (verbose)
453 fprintf(stderr, "Checking reflog %s->%s\n",
454 oid_to_hex(ooid), oid_to_hex(noid));
455
456 fsck_handle_reflog_oid(refname, ooid, 0);
457 fsck_handle_reflog_oid(refname, noid, timestamp);
458 return 0;
459}
460
461static int fsck_handle_reflog(const char *logname, const struct object_id *oid,
462 int flag, void *cb_data)
463{
464 for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname);
465 return 0;
466}
467
468static int fsck_handle_ref(const char *refname, const struct object_id *oid,
469 int flag, void *cb_data)
470{
471 struct object *obj;
472
473 obj = parse_object(the_repository, oid);
474 if (!obj) {
475 if (is_promisor_object(oid)) {
476 /*
477 * Increment default_refs anyway, because this is a
478 * valid ref.
479 */
480 default_refs++;
481 return 0;
482 }
483 error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid));
484 errors_found |= ERROR_REACHABLE;
485 /* We'll continue with the rest despite the error.. */
486 return 0;
487 }
488 if (obj->type != OBJ_COMMIT && is_branch(refname)) {
489 error("%s: not a commit", refname);
490 errors_found |= ERROR_REFS;
491 }
492 default_refs++;
493 obj->flags |= USED;
494 if (name_objects)
495 add_decoration(fsck_walk_options.object_names,
496 obj, xstrdup(refname));
497 mark_object_reachable(obj);
498
499 return 0;
500}
501
502static void get_default_heads(void)
503{
504 if (head_points_at && !is_null_oid(&head_oid))
505 fsck_handle_ref("HEAD", &head_oid, 0, NULL);
506 for_each_rawref(fsck_handle_ref, NULL);
507 if (include_reflogs)
508 for_each_reflog(fsck_handle_reflog, NULL);
509
510 /*
511 * Not having any default heads isn't really fatal, but
512 * it does mean that "--unreachable" no longer makes any
513 * sense (since in this case everything will obviously
514 * be unreachable by definition.
515 *
516 * Showing dangling objects is valid, though (as those
517 * dangling objects are likely lost heads).
518 *
519 * So we just print a warning about it, and clear the
520 * "show_unreachable" flag.
521 */
522 if (!default_refs) {
523 fprintf(stderr, "notice: No default references\n");
524 show_unreachable = 0;
525 }
526}
527
528static int fsck_loose(const struct object_id *oid, const char *path, void *data)
529{
530 struct object *obj;
531 enum object_type type;
532 unsigned long size;
533 void *contents;
534 int eaten;
535
536 if (read_loose_object(path, oid, &type, &size, &contents) < 0) {
537 errors_found |= ERROR_OBJECT;
538 error("%s: object corrupt or missing: %s",
539 oid_to_hex(oid), path);
540 return 0; /* keep checking other objects */
541 }
542
543 if (!contents && type != OBJ_BLOB)
544 BUG("read_loose_object streamed a non-blob");
545
546 obj = parse_object_buffer(the_repository, oid, type, size,
547 contents, &eaten);
548
549 if (!obj) {
550 errors_found |= ERROR_OBJECT;
551 error("%s: object could not be parsed: %s",
552 oid_to_hex(oid), path);
553 if (!eaten)
554 free(contents);
555 return 0; /* keep checking other objects */
556 }
557
558 obj->flags &= ~(REACHABLE | SEEN);
559 obj->flags |= HAS_OBJ;
560 if (fsck_obj(obj, contents, size))
561 errors_found |= ERROR_OBJECT;
562
563 if (!eaten)
564 free(contents);
565 return 0; /* keep checking other objects, even if we saw an error */
566}
567
568static int fsck_cruft(const char *basename, const char *path, void *data)
569{
570 if (!starts_with(basename, "tmp_obj_"))
571 fprintf(stderr, "bad sha1 file: %s\n", path);
572 return 0;
573}
574
575static int fsck_subdir(unsigned int nr, const char *path, void *progress)
576{
577 display_progress(progress, nr + 1);
578 return 0;
579}
580
581static void fsck_object_dir(const char *path)
582{
583 struct progress *progress = NULL;
584
585 if (verbose)
586 fprintf(stderr, "Checking object directory\n");
587
588 if (show_progress)
589 progress = start_progress(_("Checking object directories"), 256);
590
591 for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir,
592 progress);
593 display_progress(progress, 256);
594 stop_progress(&progress);
595}
596
597static int fsck_head_link(void)
598{
599 int null_is_error = 0;
600
601 if (verbose)
602 fprintf(stderr, "Checking HEAD link\n");
603
604 head_points_at = resolve_ref_unsafe("HEAD", 0, &head_oid, NULL);
605 if (!head_points_at) {
606 errors_found |= ERROR_REFS;
607 return error("Invalid HEAD");
608 }
609 if (!strcmp(head_points_at, "HEAD"))
610 /* detached HEAD */
611 null_is_error = 1;
612 else if (!starts_with(head_points_at, "refs/heads/")) {
613 errors_found |= ERROR_REFS;
614 return error("HEAD points to something strange (%s)",
615 head_points_at);
616 }
617 if (is_null_oid(&head_oid)) {
618 if (null_is_error) {
619 errors_found |= ERROR_REFS;
620 return error("HEAD: detached HEAD points at nothing");
621 }
622 fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n",
623 head_points_at + 11);
624 }
625 return 0;
626}
627
628static int fsck_cache_tree(struct cache_tree *it)
629{
630 int i;
631 int err = 0;
632
633 if (verbose)
634 fprintf(stderr, "Checking cache tree\n");
635
636 if (0 <= it->entry_count) {
637 struct object *obj = parse_object(the_repository, &it->oid);
638 if (!obj) {
639 error("%s: invalid sha1 pointer in cache-tree",
640 oid_to_hex(&it->oid));
641 errors_found |= ERROR_REFS;
642 return 1;
643 }
644 obj->flags |= USED;
645 if (name_objects)
646 add_decoration(fsck_walk_options.object_names,
647 obj, xstrdup(":"));
648 mark_object_reachable(obj);
649 if (obj->type != OBJ_TREE)
650 err |= objerror(obj, "non-tree in cache-tree");
651 }
652 for (i = 0; i < it->subtree_nr; i++)
653 err |= fsck_cache_tree(it->down[i]->cache_tree);
654 return err;
655}
656
657static void mark_object_for_connectivity(const struct object_id *oid)
658{
659 struct object *obj = lookup_unknown_object(oid->hash);
660 obj->flags |= HAS_OBJ;
661}
662
663static int mark_loose_for_connectivity(const struct object_id *oid,
664 const char *path,
665 void *data)
666{
667 mark_object_for_connectivity(oid);
668 return 0;
669}
670
671static int mark_packed_for_connectivity(const struct object_id *oid,
672 struct packed_git *pack,
673 uint32_t pos,
674 void *data)
675{
676 mark_object_for_connectivity(oid);
677 return 0;
678}
679
680static char const * const fsck_usage[] = {
681 N_("git fsck [<options>] [<object>...]"),
682 NULL
683};
684
685static struct option fsck_opts[] = {
686 OPT__VERBOSE(&verbose, N_("be verbose")),
687 OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")),
688 OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")),
689 OPT_BOOL(0, "tags", &show_tags, N_("report tags")),
690 OPT_BOOL(0, "root", &show_root, N_("report root nodes")),
691 OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")),
692 OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")),
693 OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")),
694 OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")),
695 OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")),
696 OPT_BOOL(0, "lost-found", &write_lost_and_found,
697 N_("write dangling objects in .git/lost-found")),
698 OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
699 OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")),
700 OPT_END(),
701};
702
703int cmd_fsck(int argc, const char **argv, const char *prefix)
704{
705 int i;
706 struct alternate_object_database *alt;
707
708 /* fsck knows how to handle missing promisor objects */
709 fetch_if_missing = 0;
710
711 errors_found = 0;
712 read_replace_refs = 0;
713
714 argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0);
715
716 fsck_walk_options.walk = mark_object;
717 fsck_obj_options.walk = mark_used;
718 fsck_obj_options.error_func = fsck_error_func;
719 if (check_strict)
720 fsck_obj_options.strict = 1;
721
722 if (show_progress == -1)
723 show_progress = isatty(2);
724 if (verbose)
725 show_progress = 0;
726
727 if (write_lost_and_found) {
728 check_full = 1;
729 include_reflogs = 0;
730 }
731
732 if (name_objects)
733 fsck_walk_options.object_names =
734 xcalloc(1, sizeof(struct decoration));
735
736 git_config(fsck_config, NULL);
737
738 fsck_head_link();
739 if (connectivity_only) {
740 for_each_loose_object(mark_loose_for_connectivity, NULL, 0);
741 for_each_packed_object(mark_packed_for_connectivity, NULL, 0);
742 } else {
743 struct alternate_object_database *alt_odb_list;
744
745 fsck_object_dir(get_object_directory());
746
747 prepare_alt_odb(the_repository);
748 alt_odb_list = the_repository->objects->alt_odb_list;
749 for (alt = alt_odb_list; alt; alt = alt->next)
750 fsck_object_dir(alt->path);
751
752 if (check_full) {
753 struct packed_git *p;
754 uint32_t total = 0, count = 0;
755 struct progress *progress = NULL;
756
757 if (show_progress) {
758 for (p = get_all_packs(the_repository); p;
759 p = p->next) {
760 if (open_pack_index(p))
761 continue;
762 total += p->num_objects;
763 }
764
765 progress = start_progress(_("Checking objects"), total);
766 }
767 for (p = get_all_packs(the_repository); p;
768 p = p->next) {
769 /* verify gives error messages itself */
770 if (verify_pack(p, fsck_obj_buffer,
771 progress, count))
772 errors_found |= ERROR_PACK;
773 count += p->num_objects;
774 }
775 stop_progress(&progress);
776 }
777
778 if (fsck_finish(&fsck_obj_options))
779 errors_found |= ERROR_OBJECT;
780 }
781
782 for (i = 0; i < argc; i++) {
783 const char *arg = argv[i];
784 struct object_id oid;
785 if (!get_oid(arg, &oid)) {
786 struct object *obj = lookup_object(the_repository,
787 oid.hash);
788
789 if (!obj || !(obj->flags & HAS_OBJ)) {
790 if (is_promisor_object(&oid))
791 continue;
792 error("%s: object missing", oid_to_hex(&oid));
793 errors_found |= ERROR_OBJECT;
794 continue;
795 }
796
797 obj->flags |= USED;
798 if (name_objects)
799 add_decoration(fsck_walk_options.object_names,
800 obj, xstrdup(arg));
801 mark_object_reachable(obj);
802 continue;
803 }
804 error("invalid parameter: expected sha1, got '%s'", arg);
805 errors_found |= ERROR_OBJECT;
806 }
807
808 /*
809 * If we've not been given any explicit head information, do the
810 * default ones from .git/refs. We also consider the index file
811 * in this case (ie this implies --cache).
812 */
813 if (!argc) {
814 get_default_heads();
815 keep_cache_objects = 1;
816 }
817
818 if (keep_cache_objects) {
819 verify_index_checksum = 1;
820 verify_ce_order = 1;
821 read_cache();
822 for (i = 0; i < active_nr; i++) {
823 unsigned int mode;
824 struct blob *blob;
825 struct object *obj;
826
827 mode = active_cache[i]->ce_mode;
828 if (S_ISGITLINK(mode))
829 continue;
830 blob = lookup_blob(the_repository,
831 &active_cache[i]->oid);
832 if (!blob)
833 continue;
834 obj = &blob->object;
835 obj->flags |= USED;
836 if (name_objects)
837 add_decoration(fsck_walk_options.object_names,
838 obj,
839 xstrfmt(":%s", active_cache[i]->name));
840 mark_object_reachable(obj);
841 }
842 if (active_cache_tree)
843 fsck_cache_tree(active_cache_tree);
844 }
845
846 check_connectivity();
847
848 if (!git_config_get_bool("core.commitgraph", &i) && i) {
849 struct child_process commit_graph_verify = CHILD_PROCESS_INIT;
850 const char *verify_argv[] = { "commit-graph", "verify", NULL, NULL, NULL };
851
852 commit_graph_verify.argv = verify_argv;
853 commit_graph_verify.git_cmd = 1;
854 if (run_command(&commit_graph_verify))
855 errors_found |= ERROR_COMMIT_GRAPH;
856
857 prepare_alt_odb(the_repository);
858 for (alt = the_repository->objects->alt_odb_list; alt; alt = alt->next) {
859 verify_argv[2] = "--object-dir";
860 verify_argv[3] = alt->path;
861 if (run_command(&commit_graph_verify))
862 errors_found |= ERROR_COMMIT_GRAPH;
863 }
864 }
865
866 if (!git_config_get_bool("core.multipackindex", &i) && i) {
867 struct child_process midx_verify = CHILD_PROCESS_INIT;
868 const char *midx_argv[] = { "multi-pack-index", "verify", NULL, NULL, NULL };
869
870 midx_verify.argv = midx_argv;
871 midx_verify.git_cmd = 1;
872 if (run_command(&midx_verify))
873 errors_found |= ERROR_COMMIT_GRAPH;
874
875 prepare_alt_odb(the_repository);
876 for (alt = the_repository->objects->alt_odb_list; alt; alt = alt->next) {
877 midx_argv[2] = "--object-dir";
878 midx_argv[3] = alt->path;
879 if (run_command(&midx_verify))
880 errors_found |= ERROR_COMMIT_GRAPH;
881 }
882 }
883
884 return errors_found;
885}