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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" |
ff5ebe39 DB |
16 | |
17 | #define REACHABLE 0x0001 | |
2d9c58c6 | 18 | #define SEEN 0x0002 |
6e454b9a | 19 | #define HAS_OBJ 0x0004 |
d9839e03 | 20 | |
96f1e58f DR |
21 | static int show_root; |
22 | static int show_tags; | |
23 | static int show_unreachable; | |
566842f6 | 24 | static int include_reflogs = 1; |
f29cd393 | 25 | static int check_full = 1; |
02976bf8 | 26 | static int connectivity_only; |
96f1e58f DR |
27 | static int check_strict; |
28 | static int keep_cache_objects; | |
22410549 JS |
29 | static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT; |
30 | static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT; | |
635b99a0 | 31 | static struct object_id head_oid; |
469e2ebf | 32 | static const char *head_points_at; |
e2b4f635 | 33 | static int errors_found; |
68f6c019 | 34 | static int write_lost_and_found; |
20f1eb6b | 35 | static int verbose; |
1e49f22f | 36 | static int show_progress = -1; |
c6a13b2c | 37 | static 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 | 43 | static 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 |
66 | static void objreport(struct object *obj, const char *msg_type, |
67 | const char *err) | |
f1f0d088 | 68 | { |
c99ba492 JS |
69 | fprintf(stderr, "%s in %s %s: %s\n", |
70 | msg_type, typename(obj->type), sha1_to_hex(obj->sha1), err); | |
f1f0d088 PB |
71 | } |
72 | ||
c99ba492 | 73 | static 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 | 80 | static 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 |
86 | static struct object_array pending; |
87 | ||
22410549 | 88 | static 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 MK |
99 | printf("broken link from %7s %s\n", |
100 | typename(parent->type), sha1_to_hex(parent->sha1)); | |
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)) { |
271b8d25 MK |
115 | if (parent && !has_sha1_file(obj->sha1)) { |
116 | printf("broken link from %7s %s\n", | |
117 | typename(parent->type), sha1_to_hex(parent->sha1)); | |
118 | printf(" to %7s %s\n", | |
119 | typename(obj->type), sha1_to_hex(obj->sha1)); | |
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 | ||
129 | static void mark_object_reachable(struct object *obj) | |
130 | { | |
22410549 | 131 | mark_object(obj, OBJ_ANY, NULL, NULL); |
04d39759 LT |
132 | } |
133 | ||
a1cdc251 | 134 | static 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 | 150 | static 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 | 170 | static 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 | */ | |
181 | static 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)) { |
cd673c1f | 189 | if (has_sha1_pack(obj->sha1)) |
18af29f2 | 190 | return; /* it is in pack - forget about it */ |
02976bf8 JS |
191 | if (connectivity_only && has_sha1_file(obj->sha1)) |
192 | return; | |
18af29f2 | 193 | printf("missing %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1)); |
e2b4f635 | 194 | errors_found |= ERROR_REACHABLE; |
18af29f2 LT |
195 | return; |
196 | } | |
18af29f2 LT |
197 | } |
198 | ||
199 | /* | |
200 | * Check a single unreachable object | |
201 | */ | |
202 | static 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) { | |
218 | printf("unreachable %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1)); | |
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), | |
237 | sha1_to_hex(obj->sha1)); | |
68f6c019 | 238 | if (write_lost_and_found) { |
fcd12db6 | 239 | char *filename = git_pathdup("lost-found/%s/%s", |
68f6c019 JS |
240 | obj->type == OBJ_COMMIT ? "commit" : "other", |
241 | sha1_to_hex(obj->sha1)); | |
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) { |
6f7f3beb | 252 | if (stream_blob_to_fd(fileno(f), obj->sha1, NULL, 1)) |
eb726f2d | 253 | die_errno("Could not write '%s'", filename); |
16a7fcfe JS |
254 | } else |
255 | fprintf(f, "%s\n", sha1_to_hex(obj->sha1)); | |
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 | ||
271 | static void check_object(struct object *obj) | |
272 | { | |
20f1eb6b JS |
273 | if (verbose) |
274 | fprintf(stderr, "Checking %s\n", sha1_to_hex(obj->sha1)); | |
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 |
282 | static 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 | 302 | static 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 MK |
309 | fprintf(stderr, "Checking %s %s\n", |
310 | typename(obj->type), sha1_to_hex(obj->sha1)); | |
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 MK |
328 | if (!commit->parents && show_root) |
329 | printf("root %s\n", sha1_to_hex(commit->object.sha1)); | |
330 | } | |
92d4c85d | 331 | |
ba002f3b MK |
332 | if (obj->type == OBJ_TAG) { |
333 | struct tag *tag = (struct tag *) obj; | |
20f1eb6b | 334 | |
ba002f3b MK |
335 | if (show_tags && tag->tagged) { |
336 | printf("tagged %s %s", typename(tag->tagged->type), sha1_to_hex(tag->tagged->sha1)); | |
337 | printf(" (%s) in %s\n", tag->tag, sha1_to_hex(tag->object.sha1)); | |
338 | } | |
92d4c85d | 339 | } |
889262ea | 340 | |
ff5ebe39 | 341 | return 0; |
20222118 LT |
342 | } |
343 | ||
c9486eb0 NTND |
344 | static 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 | ||
356 | static 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 | 369 | static int default_refs; |
944d8589 | 370 | |
19bf6c9b | 371 | static 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 |
387 | static 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 |
402 | static 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 |
409 | static 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 |
432 | static 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 |
458 | static 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 | ||
465 | static 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 | ||
472 | static int fsck_subdir(int nr, const char *path, void *progress) | |
473 | { | |
474 | display_progress(progress, nr + 1); | |
475 | return 0; | |
476 | } | |
477 | ||
8a498a05 JH |
478 | static 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 |
494 | static 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 |
526 | static 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 | 552 | static char const * const fsck_usage[] = { |
9c9b4f2f | 553 | N_("git fsck [<options>] [<object>...]"), |
5ac0a206 PH |
554 | NULL |
555 | }; | |
556 | ||
557 | static 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 | 574 | int 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 | } |