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Commit | Line | Data |
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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" |
90cf590f | 16 | #include "decorate.h" |
ff5ebe39 DB |
17 | |
18 | #define REACHABLE 0x0001 | |
2d9c58c6 | 19 | #define SEEN 0x0002 |
6e454b9a | 20 | #define HAS_OBJ 0x0004 |
d9839e03 | 21 | |
96f1e58f DR |
22 | static int show_root; |
23 | static int show_tags; | |
24 | static int show_unreachable; | |
566842f6 | 25 | static int include_reflogs = 1; |
f29cd393 | 26 | static int check_full = 1; |
02976bf8 | 27 | static int connectivity_only; |
96f1e58f DR |
28 | static int check_strict; |
29 | static int keep_cache_objects; | |
22410549 JS |
30 | static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT; |
31 | static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT; | |
635b99a0 | 32 | static struct object_id head_oid; |
469e2ebf | 33 | static const char *head_points_at; |
e2b4f635 | 34 | static int errors_found; |
68f6c019 | 35 | static int write_lost_and_found; |
20f1eb6b | 36 | static int verbose; |
1e49f22f | 37 | static int show_progress = -1; |
c6a13b2c | 38 | static int show_dangling = 1; |
90cf590f | 39 | static int name_objects; |
e2b4f635 JH |
40 | #define ERROR_OBJECT 01 |
41 | #define ERROR_REACHABLE 02 | |
a3ed7552 | 42 | #define ERROR_PACK 04 |
122f76f5 | 43 | #define ERROR_REFS 010 |
d9839e03 | 44 | |
993a21b0 JS |
45 | static const char *describe_object(struct object *obj) |
46 | { | |
90cf590f JS |
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; | |
993a21b0 JS |
57 | } |
58 | ||
2becf00f | 59 | static int fsck_config(const char *var, const char *value, void *cb) |
f1f0d088 | 60 | { |
1335f732 JS |
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 | ||
2becf00f JS |
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 | ||
c99ba492 JS |
82 | static void objreport(struct object *obj, const char *msg_type, |
83 | const char *err) | |
f1f0d088 | 84 | { |
c99ba492 | 85 | fprintf(stderr, "%s in %s %s: %s\n", |
993a21b0 | 86 | msg_type, typename(obj->type), describe_object(obj), err); |
f1f0d088 PB |
87 | } |
88 | ||
c99ba492 | 89 | static int objerror(struct object *obj, const char *err) |
f1f0d088 | 90 | { |
e2b4f635 | 91 | errors_found |= ERROR_OBJECT; |
c99ba492 | 92 | objreport(obj, "error", err); |
f1f0d088 PB |
93 | return -1; |
94 | } | |
95 | ||
1cd772cc JS |
96 | static int fsck_error_func(struct fsck_options *o, |
97 | struct object *obj, int type, const char *message) | |
f1f0d088 | 98 | { |
c99ba492 | 99 | objreport(obj, (type == FSCK_WARN) ? "warning" : "error", message); |
ba002f3b | 100 | return (type == FSCK_WARN) ? 0 : 1; |
f1f0d088 PB |
101 | } |
102 | ||
04d39759 LT |
103 | static struct object_array pending; |
104 | ||
22410549 | 105 | static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 | 106 | { |
271b8d25 | 107 | struct object *parent = data; |
271b8d25 | 108 | |
a1cdc251 JH |
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 | */ | |
271b8d25 | 114 | if (!obj) { |
a1cdc251 | 115 | /* ... these references to parent->fld are safe here */ |
271b8d25 | 116 | printf("broken link from %7s %s\n", |
993a21b0 | 117 | typename(parent->type), describe_object(parent)); |
271b8d25 MK |
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) | |
a1cdc251 | 125 | /* ... and the reference to parent is safe here */ |
271b8d25 MK |
126 | objerror(parent, "wrong object type in link"); |
127 | ||
128 | if (obj->flags & REACHABLE) | |
129 | return 0; | |
130 | obj->flags |= REACHABLE; | |
6e454b9a | 131 | if (!(obj->flags & HAS_OBJ)) { |
f2fd0760 | 132 | if (parent && !has_object_file(&obj->oid)) { |
271b8d25 | 133 | printf("broken link from %7s %s\n", |
993a21b0 | 134 | typename(parent->type), describe_object(parent)); |
271b8d25 | 135 | printf(" to %7s %s\n", |
993a21b0 | 136 | typename(obj->type), describe_object(obj)); |
271b8d25 MK |
137 | errors_found |= ERROR_REACHABLE; |
138 | } | |
139 | return 1; | |
140 | } | |
141 | ||
16aa3bfc | 142 | add_object_array(obj, NULL, &pending); |
04d39759 LT |
143 | return 0; |
144 | } | |
145 | ||
146 | static void mark_object_reachable(struct object *obj) | |
147 | { | |
22410549 | 148 | mark_object(obj, OBJ_ANY, NULL, NULL); |
04d39759 LT |
149 | } |
150 | ||
a1cdc251 | 151 | static int traverse_one_object(struct object *obj) |
04d39759 LT |
152 | { |
153 | int result; | |
154 | struct tree *tree = NULL; | |
155 | ||
271b8d25 | 156 | if (obj->type == OBJ_TREE) { |
271b8d25 MK |
157 | tree = (struct tree *)obj; |
158 | if (parse_tree(tree) < 0) | |
159 | return 1; /* error already displayed */ | |
160 | } | |
22410549 | 161 | result = fsck_walk(obj, obj, &fsck_walk_options); |
6e454b9a JK |
162 | if (tree) |
163 | free_tree_buffer(tree); | |
271b8d25 MK |
164 | return result; |
165 | } | |
166 | ||
04d39759 | 167 | static int traverse_reachable(void) |
271b8d25 | 168 | { |
1e49f22f NTND |
169 | struct progress *progress = NULL; |
170 | unsigned int nr = 0; | |
04d39759 | 171 | int result = 0; |
1e49f22f | 172 | if (show_progress) |
754dbc43 | 173 | progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2); |
04d39759 LT |
174 | while (pending.nr) { |
175 | struct object_array_entry *entry; | |
c0aa335c | 176 | struct object *obj; |
04d39759 LT |
177 | |
178 | entry = pending.objects + --pending.nr; | |
179 | obj = entry->item; | |
a1cdc251 | 180 | result |= traverse_one_object(obj); |
1e49f22f | 181 | display_progress(progress, ++nr); |
04d39759 | 182 | } |
1e49f22f | 183 | stop_progress(&progress); |
04d39759 | 184 | return !!result; |
271b8d25 MK |
185 | } |
186 | ||
22410549 | 187 | static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 MK |
188 | { |
189 | if (!obj) | |
190 | return 1; | |
191 | obj->used = 1; | |
192 | return 0; | |
f1f0d088 PB |
193 | } |
194 | ||
18af29f2 LT |
195 | /* |
196 | * Check a single reachable object | |
197 | */ | |
198 | static void check_reachable_object(struct object *obj) | |
199 | { | |
18af29f2 LT |
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 | */ | |
6e454b9a | 205 | if (!(obj->flags & HAS_OBJ)) { |
ed1c9977 | 206 | if (has_sha1_pack(obj->oid.hash)) |
18af29f2 | 207 | return; /* it is in pack - forget about it */ |
f2fd0760 | 208 | if (connectivity_only && has_object_file(&obj->oid)) |
02976bf8 | 209 | return; |
993a21b0 JS |
210 | printf("missing %s %s\n", typename(obj->type), |
211 | describe_object(obj)); | |
e2b4f635 | 212 | errors_found |= ERROR_REACHABLE; |
18af29f2 LT |
213 | return; |
214 | } | |
18af29f2 LT |
215 | } |
216 | ||
217 | /* | |
218 | * Check a single unreachable object | |
219 | */ | |
220 | static 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) { | |
993a21b0 JS |
236 | printf("unreachable %s %s\n", typename(obj->type), |
237 | describe_object(obj)); | |
18af29f2 LT |
238 | return; |
239 | } | |
240 | ||
241 | /* | |
242 | * "!used" means that nothing at all points to it, including | |
3dff5379 | 243 | * other unreachable objects. In other words, it's the "tip" |
18af29f2 LT |
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) { | |
c6a13b2c JH |
254 | if (show_dangling) |
255 | printf("dangling %s %s\n", typename(obj->type), | |
993a21b0 | 256 | describe_object(obj)); |
68f6c019 | 257 | if (write_lost_and_found) { |
fcd12db6 | 258 | char *filename = git_pathdup("lost-found/%s/%s", |
68f6c019 | 259 | obj->type == OBJ_COMMIT ? "commit" : "other", |
993a21b0 | 260 | describe_object(obj)); |
68f6c019 JS |
261 | FILE *f; |
262 | ||
dcf69262 | 263 | if (safe_create_leading_directories_const(filename)) { |
68f6c019 | 264 | error("Could not create lost-found"); |
fcd12db6 | 265 | free(filename); |
68f6c019 JS |
266 | return; |
267 | } | |
268 | if (!(f = fopen(filename, "w"))) | |
0721c314 | 269 | die_errno("Could not open '%s'", filename); |
16a7fcfe | 270 | if (obj->type == OBJ_BLOB) { |
7eda0e4f | 271 | if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1)) |
eb726f2d | 272 | die_errno("Could not write '%s'", filename); |
16a7fcfe | 273 | } else |
993a21b0 | 274 | fprintf(f, "%s\n", describe_object(obj)); |
47d32af2 | 275 | if (fclose(f)) |
d824cbba TR |
276 | die_errno("Could not finish '%s'", |
277 | filename); | |
fcd12db6 | 278 | free(filename); |
68f6c019 | 279 | } |
18af29f2 LT |
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 | ||
290 | static void check_object(struct object *obj) | |
291 | { | |
20f1eb6b | 292 | if (verbose) |
993a21b0 | 293 | fprintf(stderr, "Checking %s\n", describe_object(obj)); |
20f1eb6b | 294 | |
18af29f2 LT |
295 | if (obj->flags & REACHABLE) |
296 | check_reachable_object(obj); | |
297 | else | |
298 | check_unreachable_object(obj); | |
299 | } | |
f1f0d088 | 300 | |
8ba0bbb2 LT |
301 | static void check_connectivity(void) |
302 | { | |
fc046a75 | 303 | int i, max; |
8ba0bbb2 | 304 | |
04d39759 LT |
305 | /* Traverse the pending reachable objects */ |
306 | traverse_reachable(); | |
307 | ||
8ba0bbb2 | 308 | /* Look up all the requirements, warn about missing objects.. */ |
fc046a75 | 309 | max = get_max_object_index(); |
20f1eb6b JS |
310 | if (verbose) |
311 | fprintf(stderr, "Checking connectivity (%d objects)\n", max); | |
312 | ||
fc046a75 | 313 | for (i = 0; i < max; i++) { |
fc046a75 | 314 | struct object *obj = get_indexed_object(i); |
8ba0bbb2 | 315 | |
18af29f2 LT |
316 | if (obj) |
317 | check_object(obj); | |
8ba0bbb2 LT |
318 | } |
319 | } | |
320 | ||
c9486eb0 | 321 | static int fsck_obj(struct object *obj) |
85003492 | 322 | { |
ba002f3b | 323 | if (obj->flags & SEEN) |
85003492 | 324 | return 0; |
ba002f3b | 325 | obj->flags |= SEEN; |
85003492 | 326 | |
20f1eb6b | 327 | if (verbose) |
ba002f3b | 328 | fprintf(stderr, "Checking %s %s\n", |
993a21b0 | 329 | typename(obj->type), describe_object(obj)); |
42ea9cb2 | 330 | |
22410549 | 331 | if (fsck_walk(obj, NULL, &fsck_obj_options)) |
ba002f3b | 332 | objerror(obj, "broken links"); |
22410549 | 333 | if (fsck_object(obj, NULL, 0, &fsck_obj_options)) |
ba002f3b | 334 | return -1; |
85003492 | 335 | |
ba002f3b MK |
336 | if (obj->type == OBJ_TREE) { |
337 | struct tree *item = (struct tree *) obj; | |
85003492 | 338 | |
6e454b9a | 339 | free_tree_buffer(item); |
1ea34e36 | 340 | } |
1ea34e36 | 341 | |
ba002f3b MK |
342 | if (obj->type == OBJ_COMMIT) { |
343 | struct commit *commit = (struct commit *) obj; | |
de2eb7f6 | 344 | |
0fb370da | 345 | free_commit_buffer(commit); |
4728b861 | 346 | |
ba002f3b | 347 | if (!commit->parents && show_root) |
993a21b0 | 348 | printf("root %s\n", describe_object(&commit->object)); |
ba002f3b | 349 | } |
92d4c85d | 350 | |
ba002f3b MK |
351 | if (obj->type == OBJ_TAG) { |
352 | struct tag *tag = (struct tag *) obj; | |
20f1eb6b | 353 | |
ba002f3b | 354 | if (show_tags && tag->tagged) { |
993a21b0 JS |
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)); | |
ba002f3b | 359 | } |
92d4c85d | 360 | } |
889262ea | 361 | |
ff5ebe39 | 362 | return 0; |
20222118 LT |
363 | } |
364 | ||
c9486eb0 NTND |
365 | static 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 | } | |
6e454b9a | 373 | obj->flags |= HAS_OBJ; |
c9486eb0 NTND |
374 | return fsck_obj(obj); |
375 | } | |
376 | ||
377 | static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type, | |
378 | unsigned long size, void *buffer, int *eaten) | |
379 | { | |
ec9d2249 NTND |
380 | /* |
381 | * Note, buffer may be NULL if type is OBJ_BLOB. See | |
382 | * verify_packfile(), data_valid variable for details. | |
383 | */ | |
c9486eb0 NTND |
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 | } | |
6e454b9a | 390 | obj->flags = HAS_OBJ; |
c9486eb0 NTND |
391 | return fsck_obj(obj); |
392 | } | |
393 | ||
96f1e58f | 394 | static int default_refs; |
944d8589 | 395 | |
90cf590f JS |
396 | static void fsck_handle_reflog_sha1(const char *refname, unsigned char *sha1, |
397 | unsigned long timestamp) | |
55dd5526 JH |
398 | { |
399 | struct object *obj; | |
400 | ||
d66ae59b MH |
401 | if (!is_null_sha1(sha1)) { |
402 | obj = lookup_object(sha1); | |
55dd5526 | 403 | if (obj) { |
90cf590f JS |
404 | if (timestamp && name_objects) |
405 | add_decoration(fsck_walk_options.object_names, | |
406 | obj, | |
407 | xstrfmt("%s@{%ld}", refname, timestamp)); | |
55dd5526 | 408 | obj->used = 1; |
271b8d25 | 409 | mark_object_reachable(obj); |
19bf6c9b MH |
410 | } else { |
411 | error("%s: invalid reflog entry %s", refname, sha1_to_hex(sha1)); | |
412 | errors_found |= ERROR_REACHABLE; | |
55dd5526 JH |
413 | } |
414 | } | |
d66ae59b MH |
415 | } |
416 | ||
883d60fa JS |
417 | static 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) | |
55dd5526 | 420 | { |
19bf6c9b | 421 | const char *refname = cb_data; |
55dd5526 | 422 | |
20f1eb6b JS |
423 | if (verbose) |
424 | fprintf(stderr, "Checking reflog %s->%s\n", | |
425 | sha1_to_hex(osha1), sha1_to_hex(nsha1)); | |
426 | ||
90cf590f JS |
427 | fsck_handle_reflog_sha1(refname, osha1, 0); |
428 | fsck_handle_reflog_sha1(refname, nsha1, timestamp); | |
55dd5526 JH |
429 | return 0; |
430 | } | |
431 | ||
635b99a0 MH |
432 | static int fsck_handle_reflog(const char *logname, const struct object_id *oid, |
433 | int flag, void *cb_data) | |
eb8381c8 | 434 | { |
19bf6c9b | 435 | for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname); |
eb8381c8 NP |
436 | return 0; |
437 | } | |
438 | ||
635b99a0 MH |
439 | static int fsck_handle_ref(const char *refname, const struct object_id *oid, |
440 | int flag, void *cb_data) | |
1024932f | 441 | { |
1024932f LT |
442 | struct object *obj; |
443 | ||
635b99a0 | 444 | obj = parse_object(oid->hash); |
8a498a05 | 445 | if (!obj) { |
635b99a0 | 446 | error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid)); |
30d1038d | 447 | errors_found |= ERROR_REACHABLE; |
944d8589 LT |
448 | /* We'll continue with the rest despite the error.. */ |
449 | return 0; | |
8a498a05 | 450 | } |
122f76f5 | 451 | if (obj->type != OBJ_COMMIT && is_branch(refname)) { |
6232f62b | 452 | error("%s: not a commit", refname); |
122f76f5 JH |
453 | errors_found |= ERROR_REFS; |
454 | } | |
944d8589 | 455 | default_refs++; |
1024932f | 456 | obj->used = 1; |
90cf590f JS |
457 | if (name_objects) |
458 | add_decoration(fsck_walk_options.object_names, | |
459 | obj, xstrdup(refname)); | |
271b8d25 | 460 | mark_object_reachable(obj); |
55dd5526 | 461 | |
7c4d07c7 | 462 | return 0; |
1024932f LT |
463 | } |
464 | ||
1024932f LT |
465 | static void get_default_heads(void) |
466 | { | |
635b99a0 MH |
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); | |
566842f6 | 470 | if (include_reflogs) |
635b99a0 | 471 | for_each_reflog(fsck_handle_reflog, NULL); |
071fa89e LT |
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) { | |
8eb2d0be | 486 | fprintf(stderr, "notice: No default references\n"); |
071fa89e LT |
487 | show_unreachable = 0; |
488 | } | |
1024932f LT |
489 | } |
490 | ||
f0766bf9 JK |
491 | static 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 | ||
498 | static 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 | ||
505 | static int fsck_subdir(int nr, const char *path, void *progress) | |
506 | { | |
507 | display_progress(progress, nr + 1); | |
508 | return 0; | |
509 | } | |
510 | ||
8a498a05 JH |
511 | static void fsck_object_dir(const char *path) |
512 | { | |
1e49f22f | 513 | struct progress *progress = NULL; |
20f1eb6b JS |
514 | |
515 | if (verbose) | |
516 | fprintf(stderr, "Checking object directory\n"); | |
517 | ||
1e49f22f | 518 | if (show_progress) |
754dbc43 | 519 | progress = start_progress(_("Checking object directories"), 256); |
f0766bf9 JK |
520 | |
521 | for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir, | |
522 | progress); | |
523 | display_progress(progress, 256); | |
1e49f22f | 524 | stop_progress(&progress); |
8a498a05 JH |
525 | } |
526 | ||
c3330383 LT |
527 | static int fsck_head_link(void) |
528 | { | |
8eb2d0be | 529 | int null_is_error = 0; |
8eb2d0be | 530 | |
20f1eb6b JS |
531 | if (verbose) |
532 | fprintf(stderr, "Checking HEAD link\n"); | |
533 | ||
95ae2c74 | 534 | head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid.hash, NULL); |
122f76f5 JH |
535 | if (!head_points_at) { |
536 | errors_found |= ERROR_REFS; | |
8eb2d0be | 537 | return error("Invalid HEAD"); |
122f76f5 | 538 | } |
8eb2d0be JH |
539 | if (!strcmp(head_points_at, "HEAD")) |
540 | /* detached HEAD */ | |
541 | null_is_error = 1; | |
122f76f5 JH |
542 | else if (!starts_with(head_points_at, "refs/heads/")) { |
543 | errors_found |= ERROR_REFS; | |
8098a178 | 544 | return error("HEAD points to something strange (%s)", |
5b10b091 | 545 | head_points_at); |
122f76f5 | 546 | } |
635b99a0 | 547 | if (is_null_oid(&head_oid)) { |
122f76f5 JH |
548 | if (null_is_error) { |
549 | errors_found |= ERROR_REFS; | |
8eb2d0be | 550 | return error("HEAD: detached HEAD points at nothing"); |
122f76f5 | 551 | } |
8eb2d0be JH |
552 | fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", |
553 | head_points_at + 11); | |
554 | } | |
c3330383 LT |
555 | return 0; |
556 | } | |
557 | ||
53dc3f3e JH |
558 | static int fsck_cache_tree(struct cache_tree *it) |
559 | { | |
560 | int i; | |
561 | int err = 0; | |
562 | ||
20f1eb6b JS |
563 | if (verbose) |
564 | fprintf(stderr, "Checking cache tree\n"); | |
565 | ||
53dc3f3e JH |
566 | if (0 <= it->entry_count) { |
567 | struct object *obj = parse_object(it->sha1); | |
6d60bbef JH |
568 | if (!obj) { |
569 | error("%s: invalid sha1 pointer in cache-tree", | |
570 | sha1_to_hex(it->sha1)); | |
122f76f5 | 571 | errors_found |= ERROR_REFS; |
6d60bbef JH |
572 | return 1; |
573 | } | |
cdc08b33 | 574 | obj->used = 1; |
90cf590f JS |
575 | if (name_objects) |
576 | add_decoration(fsck_walk_options.object_names, | |
577 | obj, xstrdup(":")); | |
a1cdc251 | 578 | mark_object_reachable(obj); |
1974632c | 579 | if (obj->type != OBJ_TREE) |
53dc3f3e JH |
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 | ||
5ac0a206 | 587 | static char const * const fsck_usage[] = { |
9c9b4f2f | 588 | N_("git fsck [<options>] [<object>...]"), |
5ac0a206 PH |
589 | NULL |
590 | }; | |
591 | ||
592 | static struct option fsck_opts[] = { | |
cf8fe315 | 593 | OPT__VERBOSE(&verbose, N_("be verbose")), |
d5d09d47 | 594 | OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")), |
cf8fe315 | 595 | OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")), |
d5d09d47 SB |
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")), | |
02976bf8 | 601 | OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")), |
d5d09d47 SB |
602 | OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")), |
603 | OPT_BOOL(0, "lost-found", &write_lost_and_found, | |
cf8fe315 NTND |
604 | N_("write dangling objects in .git/lost-found")), |
605 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), | |
90cf590f | 606 | OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")), |
5ac0a206 PH |
607 | OPT_END(), |
608 | }; | |
e2b4f635 | 609 | |
baffc0e7 | 610 | int cmd_fsck(int argc, const char **argv, const char *prefix) |
20222118 | 611 | { |
bcee6fd8 | 612 | int i, heads; |
e15ef669 | 613 | struct alternate_object_database *alt; |
20222118 | 614 | |
e2b4f635 | 615 | errors_found = 0; |
afc711b8 | 616 | check_replace_refs = 0; |
61e2b015 | 617 | |
37782920 | 618 | argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); |
1e49f22f | 619 | |
22410549 JS |
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 | ||
1e49f22f NTND |
626 | if (show_progress == -1) |
627 | show_progress = isatty(2); | |
628 | if (verbose) | |
629 | show_progress = 0; | |
630 | ||
5ac0a206 PH |
631 | if (write_lost_and_found) { |
632 | check_full = 1; | |
633 | include_reflogs = 0; | |
889262ea LT |
634 | } |
635 | ||
90cf590f JS |
636 | if (name_objects) |
637 | fsck_walk_options.object_names = | |
638 | xcalloc(1, sizeof(struct decoration)); | |
639 | ||
2becf00f JS |
640 | git_config(fsck_config, NULL); |
641 | ||
c3330383 | 642 | fsck_head_link(); |
fbe85e73 | 643 | if (!connectivity_only) { |
02976bf8 | 644 | fsck_object_dir(get_object_directory()); |
e15ef669 | 645 | |
fbe85e73 JK |
646 | prepare_alt_odb(); |
647 | for (alt = alt_odb_list; alt; alt = alt->next) { | |
c1fd0809 JK |
648 | /* directory name, minus trailing slash */ |
649 | size_t namelen = alt->name - alt->base - 1; | |
650 | struct strbuf name = STRBUF_INIT; | |
651 | strbuf_add(&name, alt->base, namelen); | |
652 | fsck_object_dir(name.buf); | |
653 | strbuf_release(&name); | |
fbe85e73 | 654 | } |
e15ef669 JH |
655 | } |
656 | ||
8a498a05 | 657 | if (check_full) { |
8a498a05 | 658 | struct packed_git *p; |
1e49f22f NTND |
659 | uint32_t total = 0, count = 0; |
660 | struct progress *progress = NULL; | |
e15ef669 | 661 | |
8a498a05 | 662 | prepare_packed_git(); |
1e49f22f NTND |
663 | |
664 | if (show_progress) { | |
665 | for (p = packed_git; p; p = p->next) { | |
666 | if (open_pack_index(p)) | |
667 | continue; | |
668 | total += p->num_objects; | |
669 | } | |
670 | ||
754dbc43 | 671 | progress = start_progress(_("Checking objects"), total); |
1e49f22f NTND |
672 | } |
673 | for (p = packed_git; p; p = p->next) { | |
f9253394 | 674 | /* verify gives error messages itself */ |
1e49f22f NTND |
675 | if (verify_pack(p, fsck_obj_buffer, |
676 | progress, count)) | |
a3ed7552 | 677 | errors_found |= ERROR_PACK; |
1e49f22f NTND |
678 | count += p->num_objects; |
679 | } | |
680 | stop_progress(&progress); | |
bcee6fd8 LT |
681 | } |
682 | ||
683 | heads = 0; | |
3aed2fda | 684 | for (i = 0; i < argc; i++) { |
a6080a0a | 685 | const char *arg = argv[i]; |
469e2ebf JH |
686 | unsigned char sha1[20]; |
687 | if (!get_sha1(arg, sha1)) { | |
688 | struct object *obj = lookup_object(sha1); | |
e1a1388d | 689 | |
770896e5 LT |
690 | /* Error is printed by lookup_object(). */ |
691 | if (!obj) | |
e1a1388d JF |
692 | continue; |
693 | ||
ff5ebe39 | 694 | obj->used = 1; |
90cf590f JS |
695 | if (name_objects) |
696 | add_decoration(fsck_walk_options.object_names, | |
697 | obj, xstrdup(arg)); | |
271b8d25 | 698 | mark_object_reachable(obj); |
bcee6fd8 | 699 | heads++; |
d9839e03 LT |
700 | continue; |
701 | } | |
f1f0d088 | 702 | error("invalid parameter: expected sha1, got '%s'", arg); |
d9839e03 | 703 | } |
d9839e03 | 704 | |
1024932f | 705 | /* |
d1af002d | 706 | * If we've not been given any explicit head information, do the |
e7bd907d LT |
707 | * default ones from .git/refs. We also consider the index file |
708 | * in this case (ie this implies --cache). | |
1024932f | 709 | */ |
e7bd907d | 710 | if (!heads) { |
1024932f LT |
711 | get_default_heads(); |
712 | keep_cache_objects = 1; | |
713 | } | |
714 | ||
ae7c0c92 | 715 | if (keep_cache_objects) { |
ae7c0c92 JH |
716 | read_cache(); |
717 | for (i = 0; i < active_nr; i++) { | |
8d9721c8 LT |
718 | unsigned int mode; |
719 | struct blob *blob; | |
ae7c0c92 | 720 | struct object *obj; |
8d9721c8 | 721 | |
7a51ed66 | 722 | mode = active_cache[i]->ce_mode; |
302b9282 | 723 | if (S_ISGITLINK(mode)) |
8d9721c8 | 724 | continue; |
99d1a986 | 725 | blob = lookup_blob(active_cache[i]->oid.hash); |
ae7c0c92 JH |
726 | if (!blob) |
727 | continue; | |
728 | obj = &blob->object; | |
729 | obj->used = 1; | |
90cf590f JS |
730 | if (name_objects) |
731 | add_decoration(fsck_walk_options.object_names, | |
732 | obj, | |
733 | xstrfmt(":%s", active_cache[i]->name)); | |
271b8d25 | 734 | mark_object_reachable(obj); |
ae7c0c92 | 735 | } |
53dc3f3e JH |
736 | if (active_cache_tree) |
737 | fsck_cache_tree(active_cache_tree); | |
ae7c0c92 JH |
738 | } |
739 | ||
8ba0bbb2 | 740 | check_connectivity(); |
e2b4f635 | 741 | return errors_found; |
20222118 | 742 | } |