Convert struct object to object_id
[git/git.git] / builtin / fsck.c
CommitLineData
baffc0e7 1#include "builtin.h"
4b182421 2#include "cache.h"
ff5ebe39
DB
3#include "commit.h"
4#include "tree.h"
5#include "blob.h"
c418eda4 6#include "tag.h"
944d8589 7#include "refs.h"
f9253394 8#include "pack.h"
53dc3f3e 9#include "cache-tree.h"
e9a95bef 10#include "tree-walk.h"
271b8d25 11#include "fsck.h"
5ac0a206 12#include "parse-options.h"
8ca12c0d 13#include "dir.h"
1e49f22f 14#include "progress.h"
6f7f3beb 15#include "streaming.h"
ff5ebe39
DB
16
17#define REACHABLE 0x0001
2d9c58c6 18#define SEEN 0x0002
6e454b9a 19#define HAS_OBJ 0x0004
d9839e03 20
96f1e58f
DR
21static int show_root;
22static int show_tags;
23static int show_unreachable;
566842f6 24static int include_reflogs = 1;
f29cd393 25static int check_full = 1;
02976bf8 26static int connectivity_only;
96f1e58f
DR
27static int check_strict;
28static int keep_cache_objects;
22410549
JS
29static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT;
30static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT;
635b99a0 31static struct object_id head_oid;
469e2ebf 32static const char *head_points_at;
e2b4f635 33static int errors_found;
68f6c019 34static int write_lost_and_found;
20f1eb6b 35static int verbose;
1e49f22f 36static int show_progress = -1;
c6a13b2c 37static int show_dangling = 1;
e2b4f635
JH
38#define ERROR_OBJECT 01
39#define ERROR_REACHABLE 02
a3ed7552 40#define ERROR_PACK 04
122f76f5 41#define ERROR_REFS 010
d9839e03 42
2becf00f 43static int fsck_config(const char *var, const char *value, void *cb)
f1f0d088 44{
1335f732
JS
45 if (strcmp(var, "fsck.skiplist") == 0) {
46 const char *path;
47 struct strbuf sb = STRBUF_INIT;
48
49 if (git_config_pathname(&path, var, value))
50 return 1;
51 strbuf_addf(&sb, "skiplist=%s", path);
52 free((char *)path);
53 fsck_set_msg_types(&fsck_obj_options, sb.buf);
54 strbuf_release(&sb);
55 return 0;
56 }
57
2becf00f
JS
58 if (skip_prefix(var, "fsck.", &var)) {
59 fsck_set_msg_type(&fsck_obj_options, var, value);
60 return 0;
61 }
62
63 return git_default_config(var, value, cb);
64}
65
c99ba492
JS
66static void objreport(struct object *obj, const char *msg_type,
67 const char *err)
f1f0d088 68{
c99ba492 69 fprintf(stderr, "%s in %s %s: %s\n",
f2fd0760 70 msg_type, typename(obj->type), oid_to_hex(&obj->oid), err);
f1f0d088
PB
71}
72
c99ba492 73static int objerror(struct object *obj, const char *err)
f1f0d088 74{
e2b4f635 75 errors_found |= ERROR_OBJECT;
c99ba492 76 objreport(obj, "error", err);
f1f0d088
PB
77 return -1;
78}
79
c99ba492 80static int fsck_error_func(struct object *obj, int type, const char *message)
f1f0d088 81{
c99ba492 82 objreport(obj, (type == FSCK_WARN) ? "warning" : "error", message);
ba002f3b 83 return (type == FSCK_WARN) ? 0 : 1;
f1f0d088
PB
84}
85
04d39759
LT
86static struct object_array pending;
87
22410549 88static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options)
271b8d25 89{
271b8d25 90 struct object *parent = data;
271b8d25 91
a1cdc251
JH
92 /*
93 * The only case data is NULL or type is OBJ_ANY is when
94 * mark_object_reachable() calls us. All the callers of
95 * that function has non-NULL obj hence ...
96 */
271b8d25 97 if (!obj) {
a1cdc251 98 /* ... these references to parent->fld are safe here */
271b8d25 99 printf("broken link from %7s %s\n",
f2fd0760 100 typename(parent->type), oid_to_hex(&parent->oid));
271b8d25
MK
101 printf("broken link from %7s %s\n",
102 (type == OBJ_ANY ? "unknown" : typename(type)), "unknown");
103 errors_found |= ERROR_REACHABLE;
104 return 1;
105 }
106
107 if (type != OBJ_ANY && obj->type != type)
a1cdc251 108 /* ... and the reference to parent is safe here */
271b8d25
MK
109 objerror(parent, "wrong object type in link");
110
111 if (obj->flags & REACHABLE)
112 return 0;
113 obj->flags |= REACHABLE;
6e454b9a 114 if (!(obj->flags & HAS_OBJ)) {
f2fd0760 115 if (parent && !has_object_file(&obj->oid)) {
271b8d25 116 printf("broken link from %7s %s\n",
f2fd0760 117 typename(parent->type), oid_to_hex(&parent->oid));
271b8d25 118 printf(" to %7s %s\n",
f2fd0760 119 typename(obj->type), oid_to_hex(&obj->oid));
271b8d25
MK
120 errors_found |= ERROR_REACHABLE;
121 }
122 return 1;
123 }
124
16aa3bfc 125 add_object_array(obj, NULL, &pending);
04d39759
LT
126 return 0;
127}
128
129static void mark_object_reachable(struct object *obj)
130{
22410549 131 mark_object(obj, OBJ_ANY, NULL, NULL);
04d39759
LT
132}
133
a1cdc251 134static int traverse_one_object(struct object *obj)
04d39759
LT
135{
136 int result;
137 struct tree *tree = NULL;
138
271b8d25 139 if (obj->type == OBJ_TREE) {
271b8d25
MK
140 tree = (struct tree *)obj;
141 if (parse_tree(tree) < 0)
142 return 1; /* error already displayed */
143 }
22410549 144 result = fsck_walk(obj, obj, &fsck_walk_options);
6e454b9a
JK
145 if (tree)
146 free_tree_buffer(tree);
271b8d25
MK
147 return result;
148}
149
04d39759 150static int traverse_reachable(void)
271b8d25 151{
1e49f22f
NTND
152 struct progress *progress = NULL;
153 unsigned int nr = 0;
04d39759 154 int result = 0;
1e49f22f 155 if (show_progress)
754dbc43 156 progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);
04d39759
LT
157 while (pending.nr) {
158 struct object_array_entry *entry;
c0aa335c 159 struct object *obj;
04d39759
LT
160
161 entry = pending.objects + --pending.nr;
162 obj = entry->item;
a1cdc251 163 result |= traverse_one_object(obj);
1e49f22f 164 display_progress(progress, ++nr);
04d39759 165 }
1e49f22f 166 stop_progress(&progress);
04d39759 167 return !!result;
271b8d25
MK
168}
169
22410549 170static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options)
271b8d25
MK
171{
172 if (!obj)
173 return 1;
174 obj->used = 1;
175 return 0;
f1f0d088
PB
176}
177
18af29f2
LT
178/*
179 * Check a single reachable object
180 */
181static void check_reachable_object(struct object *obj)
182{
18af29f2
LT
183 /*
184 * We obviously want the object to be parsed,
185 * except if it was in a pack-file and we didn't
186 * do a full fsck
187 */
6e454b9a 188 if (!(obj->flags & HAS_OBJ)) {
7999b2cf 189 if (has_sha1_pack(get_object_hash(*obj)))
18af29f2 190 return; /* it is in pack - forget about it */
f2fd0760 191 if (connectivity_only && has_object_file(&obj->oid))
02976bf8 192 return;
f2fd0760 193 printf("missing %s %s\n", typename(obj->type), oid_to_hex(&obj->oid));
e2b4f635 194 errors_found |= ERROR_REACHABLE;
18af29f2
LT
195 return;
196 }
18af29f2
LT
197}
198
199/*
200 * Check a single unreachable object
201 */
202static void check_unreachable_object(struct object *obj)
203{
204 /*
205 * Missing unreachable object? Ignore it. It's not like
206 * we miss it (since it can't be reached), nor do we want
207 * to complain about it being unreachable (since it does
208 * not exist).
209 */
210 if (!obj->parsed)
211 return;
212
213 /*
214 * Unreachable object that exists? Show it if asked to,
215 * since this is something that is prunable.
216 */
217 if (show_unreachable) {
f2fd0760 218 printf("unreachable %s %s\n", typename(obj->type), oid_to_hex(&obj->oid));
18af29f2
LT
219 return;
220 }
221
222 /*
223 * "!used" means that nothing at all points to it, including
3dff5379 224 * other unreachable objects. In other words, it's the "tip"
18af29f2
LT
225 * of some set of unreachable objects, usually a commit that
226 * got dropped.
227 *
228 * Such starting points are more interesting than some random
229 * set of unreachable objects, so we show them even if the user
230 * hasn't asked for _all_ unreachable objects. If you have
231 * deleted a branch by mistake, this is a prime candidate to
232 * start looking at, for example.
233 */
234 if (!obj->used) {
c6a13b2c
JH
235 if (show_dangling)
236 printf("dangling %s %s\n", typename(obj->type),
f2fd0760 237 oid_to_hex(&obj->oid));
68f6c019 238 if (write_lost_and_found) {
fcd12db6 239 char *filename = git_pathdup("lost-found/%s/%s",
68f6c019 240 obj->type == OBJ_COMMIT ? "commit" : "other",
f2fd0760 241 oid_to_hex(&obj->oid));
68f6c019
JS
242 FILE *f;
243
dcf69262 244 if (safe_create_leading_directories_const(filename)) {
68f6c019 245 error("Could not create lost-found");
fcd12db6 246 free(filename);
68f6c019
JS
247 return;
248 }
249 if (!(f = fopen(filename, "w")))
0721c314 250 die_errno("Could not open '%s'", filename);
16a7fcfe 251 if (obj->type == OBJ_BLOB) {
7999b2cf 252 if (stream_blob_to_fd(fileno(f), get_object_hash(*obj), NULL, 1))
eb726f2d 253 die_errno("Could not write '%s'", filename);
16a7fcfe 254 } else
f2fd0760 255 fprintf(f, "%s\n", oid_to_hex(&obj->oid));
47d32af2 256 if (fclose(f))
d824cbba
TR
257 die_errno("Could not finish '%s'",
258 filename);
fcd12db6 259 free(filename);
68f6c019 260 }
18af29f2
LT
261 return;
262 }
263
264 /*
265 * Otherwise? It's there, it's unreachable, and some other unreachable
266 * object points to it. Ignore it - it's not interesting, and we showed
267 * all the interesting cases above.
268 */
269}
270
271static void check_object(struct object *obj)
272{
20f1eb6b 273 if (verbose)
f2fd0760 274 fprintf(stderr, "Checking %s\n", oid_to_hex(&obj->oid));
20f1eb6b 275
18af29f2
LT
276 if (obj->flags & REACHABLE)
277 check_reachable_object(obj);
278 else
279 check_unreachable_object(obj);
280}
f1f0d088 281
8ba0bbb2
LT
282static void check_connectivity(void)
283{
fc046a75 284 int i, max;
8ba0bbb2 285
04d39759
LT
286 /* Traverse the pending reachable objects */
287 traverse_reachable();
288
8ba0bbb2 289 /* Look up all the requirements, warn about missing objects.. */
fc046a75 290 max = get_max_object_index();
20f1eb6b
JS
291 if (verbose)
292 fprintf(stderr, "Checking connectivity (%d objects)\n", max);
293
fc046a75 294 for (i = 0; i < max; i++) {
fc046a75 295 struct object *obj = get_indexed_object(i);
8ba0bbb2 296
18af29f2
LT
297 if (obj)
298 check_object(obj);
8ba0bbb2
LT
299 }
300}
301
c9486eb0 302static int fsck_obj(struct object *obj)
85003492 303{
ba002f3b 304 if (obj->flags & SEEN)
85003492 305 return 0;
ba002f3b 306 obj->flags |= SEEN;
85003492 307
20f1eb6b 308 if (verbose)
ba002f3b 309 fprintf(stderr, "Checking %s %s\n",
f2fd0760 310 typename(obj->type), oid_to_hex(&obj->oid));
42ea9cb2 311
22410549 312 if (fsck_walk(obj, NULL, &fsck_obj_options))
ba002f3b 313 objerror(obj, "broken links");
22410549 314 if (fsck_object(obj, NULL, 0, &fsck_obj_options))
ba002f3b 315 return -1;
85003492 316
ba002f3b
MK
317 if (obj->type == OBJ_TREE) {
318 struct tree *item = (struct tree *) obj;
85003492 319
6e454b9a 320 free_tree_buffer(item);
1ea34e36 321 }
1ea34e36 322
ba002f3b
MK
323 if (obj->type == OBJ_COMMIT) {
324 struct commit *commit = (struct commit *) obj;
de2eb7f6 325
0fb370da 326 free_commit_buffer(commit);
4728b861 327
ba002f3b 328 if (!commit->parents && show_root)
f2fd0760 329 printf("root %s\n", oid_to_hex(&commit->object.oid));
ba002f3b 330 }
92d4c85d 331
ba002f3b
MK
332 if (obj->type == OBJ_TAG) {
333 struct tag *tag = (struct tag *) obj;
20f1eb6b 334
ba002f3b 335 if (show_tags && tag->tagged) {
f2fd0760 336 printf("tagged %s %s", typename(tag->tagged->type), oid_to_hex(&tag->tagged->oid));
337 printf(" (%s) in %s\n", tag->tag, oid_to_hex(&tag->object.oid));
ba002f3b 338 }
92d4c85d 339 }
889262ea 340
ff5ebe39 341 return 0;
20222118
LT
342}
343
c9486eb0
NTND
344static int fsck_sha1(const unsigned char *sha1)
345{
346 struct object *obj = parse_object(sha1);
347 if (!obj) {
348 errors_found |= ERROR_OBJECT;
349 return error("%s: object corrupt or missing",
350 sha1_to_hex(sha1));
351 }
6e454b9a 352 obj->flags |= HAS_OBJ;
c9486eb0
NTND
353 return fsck_obj(obj);
354}
355
356static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type,
357 unsigned long size, void *buffer, int *eaten)
358{
359 struct object *obj;
360 obj = parse_object_buffer(sha1, type, size, buffer, eaten);
361 if (!obj) {
362 errors_found |= ERROR_OBJECT;
363 return error("%s: object corrupt or missing", sha1_to_hex(sha1));
364 }
6e454b9a 365 obj->flags = HAS_OBJ;
c9486eb0
NTND
366 return fsck_obj(obj);
367}
368
96f1e58f 369static int default_refs;
944d8589 370
19bf6c9b 371static void fsck_handle_reflog_sha1(const char *refname, unsigned char *sha1)
55dd5526
JH
372{
373 struct object *obj;
374
d66ae59b
MH
375 if (!is_null_sha1(sha1)) {
376 obj = lookup_object(sha1);
55dd5526
JH
377 if (obj) {
378 obj->used = 1;
271b8d25 379 mark_object_reachable(obj);
19bf6c9b
MH
380 } else {
381 error("%s: invalid reflog entry %s", refname, sha1_to_hex(sha1));
382 errors_found |= ERROR_REACHABLE;
55dd5526
JH
383 }
384 }
d66ae59b
MH
385}
386
883d60fa
JS
387static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
388 const char *email, unsigned long timestamp, int tz,
389 const char *message, void *cb_data)
55dd5526 390{
19bf6c9b 391 const char *refname = cb_data;
55dd5526 392
20f1eb6b
JS
393 if (verbose)
394 fprintf(stderr, "Checking reflog %s->%s\n",
395 sha1_to_hex(osha1), sha1_to_hex(nsha1));
396
19bf6c9b
MH
397 fsck_handle_reflog_sha1(refname, osha1);
398 fsck_handle_reflog_sha1(refname, nsha1);
55dd5526
JH
399 return 0;
400}
401
635b99a0
MH
402static int fsck_handle_reflog(const char *logname, const struct object_id *oid,
403 int flag, void *cb_data)
eb8381c8 404{
19bf6c9b 405 for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname);
eb8381c8
NP
406 return 0;
407}
408
635b99a0
MH
409static int fsck_handle_ref(const char *refname, const struct object_id *oid,
410 int flag, void *cb_data)
1024932f 411{
1024932f
LT
412 struct object *obj;
413
635b99a0 414 obj = parse_object(oid->hash);
8a498a05 415 if (!obj) {
635b99a0 416 error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid));
30d1038d 417 errors_found |= ERROR_REACHABLE;
944d8589
LT
418 /* We'll continue with the rest despite the error.. */
419 return 0;
8a498a05 420 }
122f76f5 421 if (obj->type != OBJ_COMMIT && is_branch(refname)) {
6232f62b 422 error("%s: not a commit", refname);
122f76f5
JH
423 errors_found |= ERROR_REFS;
424 }
944d8589 425 default_refs++;
1024932f 426 obj->used = 1;
271b8d25 427 mark_object_reachable(obj);
55dd5526 428
7c4d07c7 429 return 0;
1024932f
LT
430}
431
1024932f
LT
432static void get_default_heads(void)
433{
635b99a0
MH
434 if (head_points_at && !is_null_oid(&head_oid))
435 fsck_handle_ref("HEAD", &head_oid, 0, NULL);
436 for_each_rawref(fsck_handle_ref, NULL);
566842f6 437 if (include_reflogs)
635b99a0 438 for_each_reflog(fsck_handle_reflog, NULL);
071fa89e
LT
439
440 /*
441 * Not having any default heads isn't really fatal, but
442 * it does mean that "--unreachable" no longer makes any
443 * sense (since in this case everything will obviously
444 * be unreachable by definition.
445 *
446 * Showing dangling objects is valid, though (as those
447 * dangling objects are likely lost heads).
448 *
449 * So we just print a warning about it, and clear the
450 * "show_unreachable" flag.
451 */
452 if (!default_refs) {
8eb2d0be 453 fprintf(stderr, "notice: No default references\n");
071fa89e
LT
454 show_unreachable = 0;
455 }
1024932f
LT
456}
457
f0766bf9
JK
458static int fsck_loose(const unsigned char *sha1, const char *path, void *data)
459{
460 if (fsck_sha1(sha1))
461 errors_found |= ERROR_OBJECT;
462 return 0;
463}
464
465static int fsck_cruft(const char *basename, const char *path, void *data)
466{
467 if (!starts_with(basename, "tmp_obj_"))
468 fprintf(stderr, "bad sha1 file: %s\n", path);
469 return 0;
470}
471
472static int fsck_subdir(int nr, const char *path, void *progress)
473{
474 display_progress(progress, nr + 1);
475 return 0;
476}
477
8a498a05
JH
478static void fsck_object_dir(const char *path)
479{
1e49f22f 480 struct progress *progress = NULL;
20f1eb6b
JS
481
482 if (verbose)
483 fprintf(stderr, "Checking object directory\n");
484
1e49f22f 485 if (show_progress)
754dbc43 486 progress = start_progress(_("Checking object directories"), 256);
f0766bf9
JK
487
488 for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir,
489 progress);
490 display_progress(progress, 256);
1e49f22f 491 stop_progress(&progress);
8a498a05
JH
492}
493
c3330383
LT
494static int fsck_head_link(void)
495{
8da19775 496 int flag;
8eb2d0be 497 int null_is_error = 0;
8eb2d0be 498
20f1eb6b
JS
499 if (verbose)
500 fprintf(stderr, "Checking HEAD link\n");
501
635b99a0 502 head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid.hash, &flag);
122f76f5
JH
503 if (!head_points_at) {
504 errors_found |= ERROR_REFS;
8eb2d0be 505 return error("Invalid HEAD");
122f76f5 506 }
8eb2d0be
JH
507 if (!strcmp(head_points_at, "HEAD"))
508 /* detached HEAD */
509 null_is_error = 1;
122f76f5
JH
510 else if (!starts_with(head_points_at, "refs/heads/")) {
511 errors_found |= ERROR_REFS;
8098a178 512 return error("HEAD points to something strange (%s)",
5b10b091 513 head_points_at);
122f76f5 514 }
635b99a0 515 if (is_null_oid(&head_oid)) {
122f76f5
JH
516 if (null_is_error) {
517 errors_found |= ERROR_REFS;
8eb2d0be 518 return error("HEAD: detached HEAD points at nothing");
122f76f5 519 }
8eb2d0be
JH
520 fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n",
521 head_points_at + 11);
522 }
c3330383
LT
523 return 0;
524}
525
53dc3f3e
JH
526static int fsck_cache_tree(struct cache_tree *it)
527{
528 int i;
529 int err = 0;
530
20f1eb6b
JS
531 if (verbose)
532 fprintf(stderr, "Checking cache tree\n");
533
53dc3f3e
JH
534 if (0 <= it->entry_count) {
535 struct object *obj = parse_object(it->sha1);
6d60bbef
JH
536 if (!obj) {
537 error("%s: invalid sha1 pointer in cache-tree",
538 sha1_to_hex(it->sha1));
122f76f5 539 errors_found |= ERROR_REFS;
6d60bbef
JH
540 return 1;
541 }
cdc08b33 542 obj->used = 1;
a1cdc251 543 mark_object_reachable(obj);
1974632c 544 if (obj->type != OBJ_TREE)
53dc3f3e
JH
545 err |= objerror(obj, "non-tree in cache-tree");
546 }
547 for (i = 0; i < it->subtree_nr; i++)
548 err |= fsck_cache_tree(it->down[i]->cache_tree);
549 return err;
550}
551
5ac0a206 552static char const * const fsck_usage[] = {
9c9b4f2f 553 N_("git fsck [<options>] [<object>...]"),
5ac0a206
PH
554 NULL
555};
556
557static struct option fsck_opts[] = {
cf8fe315 558 OPT__VERBOSE(&verbose, N_("be verbose")),
d5d09d47 559 OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")),
cf8fe315 560 OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")),
d5d09d47
SB
561 OPT_BOOL(0, "tags", &show_tags, N_("report tags")),
562 OPT_BOOL(0, "root", &show_root, N_("report root nodes")),
563 OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")),
564 OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")),
565 OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")),
02976bf8 566 OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")),
d5d09d47
SB
567 OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")),
568 OPT_BOOL(0, "lost-found", &write_lost_and_found,
cf8fe315
NTND
569 N_("write dangling objects in .git/lost-found")),
570 OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
5ac0a206
PH
571 OPT_END(),
572};
e2b4f635 573
baffc0e7 574int cmd_fsck(int argc, const char **argv, const char *prefix)
20222118 575{
bcee6fd8 576 int i, heads;
e15ef669 577 struct alternate_object_database *alt;
20222118 578
e2b4f635 579 errors_found = 0;
afc711b8 580 check_replace_refs = 0;
61e2b015 581
37782920 582 argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0);
1e49f22f 583
22410549
JS
584 fsck_walk_options.walk = mark_object;
585 fsck_obj_options.walk = mark_used;
586 fsck_obj_options.error_func = fsck_error_func;
587 if (check_strict)
588 fsck_obj_options.strict = 1;
589
1e49f22f
NTND
590 if (show_progress == -1)
591 show_progress = isatty(2);
592 if (verbose)
593 show_progress = 0;
594
5ac0a206
PH
595 if (write_lost_and_found) {
596 check_full = 1;
597 include_reflogs = 0;
889262ea
LT
598 }
599
2becf00f
JS
600 git_config(fsck_config, NULL);
601
c3330383 602 fsck_head_link();
fbe85e73 603 if (!connectivity_only) {
02976bf8 604 fsck_object_dir(get_object_directory());
e15ef669 605
fbe85e73
JK
606 prepare_alt_odb();
607 for (alt = alt_odb_list; alt; alt = alt->next) {
c1fd0809
JK
608 /* directory name, minus trailing slash */
609 size_t namelen = alt->name - alt->base - 1;
610 struct strbuf name = STRBUF_INIT;
611 strbuf_add(&name, alt->base, namelen);
612 fsck_object_dir(name.buf);
613 strbuf_release(&name);
fbe85e73 614 }
e15ef669
JH
615 }
616
8a498a05 617 if (check_full) {
8a498a05 618 struct packed_git *p;
1e49f22f
NTND
619 uint32_t total = 0, count = 0;
620 struct progress *progress = NULL;
e15ef669 621
8a498a05 622 prepare_packed_git();
1e49f22f
NTND
623
624 if (show_progress) {
625 for (p = packed_git; p; p = p->next) {
626 if (open_pack_index(p))
627 continue;
628 total += p->num_objects;
629 }
630
754dbc43 631 progress = start_progress(_("Checking objects"), total);
1e49f22f
NTND
632 }
633 for (p = packed_git; p; p = p->next) {
f9253394 634 /* verify gives error messages itself */
1e49f22f
NTND
635 if (verify_pack(p, fsck_obj_buffer,
636 progress, count))
a3ed7552 637 errors_found |= ERROR_PACK;
1e49f22f
NTND
638 count += p->num_objects;
639 }
640 stop_progress(&progress);
bcee6fd8
LT
641 }
642
643 heads = 0;
3aed2fda 644 for (i = 0; i < argc; i++) {
a6080a0a 645 const char *arg = argv[i];
469e2ebf
JH
646 unsigned char sha1[20];
647 if (!get_sha1(arg, sha1)) {
648 struct object *obj = lookup_object(sha1);
e1a1388d 649
770896e5
LT
650 /* Error is printed by lookup_object(). */
651 if (!obj)
e1a1388d
JF
652 continue;
653
ff5ebe39 654 obj->used = 1;
271b8d25 655 mark_object_reachable(obj);
bcee6fd8 656 heads++;
d9839e03
LT
657 continue;
658 }
f1f0d088 659 error("invalid parameter: expected sha1, got '%s'", arg);
d9839e03 660 }
d9839e03 661
1024932f 662 /*
d1af002d 663 * If we've not been given any explicit head information, do the
e7bd907d
LT
664 * default ones from .git/refs. We also consider the index file
665 * in this case (ie this implies --cache).
1024932f 666 */
e7bd907d 667 if (!heads) {
1024932f
LT
668 get_default_heads();
669 keep_cache_objects = 1;
670 }
671
ae7c0c92 672 if (keep_cache_objects) {
ae7c0c92
JH
673 read_cache();
674 for (i = 0; i < active_nr; i++) {
8d9721c8
LT
675 unsigned int mode;
676 struct blob *blob;
ae7c0c92 677 struct object *obj;
8d9721c8 678
7a51ed66 679 mode = active_cache[i]->ce_mode;
302b9282 680 if (S_ISGITLINK(mode))
8d9721c8
LT
681 continue;
682 blob = lookup_blob(active_cache[i]->sha1);
ae7c0c92
JH
683 if (!blob)
684 continue;
685 obj = &blob->object;
686 obj->used = 1;
271b8d25 687 mark_object_reachable(obj);
ae7c0c92 688 }
53dc3f3e
JH
689 if (active_cache_tree)
690 fsck_cache_tree(active_cache_tree);
ae7c0c92
JH
691 }
692
8ba0bbb2 693 check_connectivity();
e2b4f635 694 return errors_found;
20222118 695}