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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 */ |
993a21b0 JS |
208 | printf("missing %s %s\n", typename(obj->type), |
209 | describe_object(obj)); | |
e2b4f635 | 210 | errors_found |= ERROR_REACHABLE; |
18af29f2 LT |
211 | return; |
212 | } | |
18af29f2 LT |
213 | } |
214 | ||
215 | /* | |
216 | * Check a single unreachable object | |
217 | */ | |
218 | static void check_unreachable_object(struct object *obj) | |
219 | { | |
220 | /* | |
221 | * Missing unreachable object? Ignore it. It's not like | |
222 | * we miss it (since it can't be reached), nor do we want | |
223 | * to complain about it being unreachable (since it does | |
224 | * not exist). | |
225 | */ | |
b4584e4f | 226 | if (!(obj->flags & HAS_OBJ)) |
18af29f2 LT |
227 | return; |
228 | ||
229 | /* | |
230 | * Unreachable object that exists? Show it if asked to, | |
231 | * since this is something that is prunable. | |
232 | */ | |
233 | if (show_unreachable) { | |
993a21b0 JS |
234 | printf("unreachable %s %s\n", typename(obj->type), |
235 | describe_object(obj)); | |
18af29f2 LT |
236 | return; |
237 | } | |
238 | ||
239 | /* | |
240 | * "!used" means that nothing at all points to it, including | |
3dff5379 | 241 | * other unreachable objects. In other words, it's the "tip" |
18af29f2 LT |
242 | * of some set of unreachable objects, usually a commit that |
243 | * got dropped. | |
244 | * | |
245 | * Such starting points are more interesting than some random | |
246 | * set of unreachable objects, so we show them even if the user | |
247 | * hasn't asked for _all_ unreachable objects. If you have | |
248 | * deleted a branch by mistake, this is a prime candidate to | |
249 | * start looking at, for example. | |
250 | */ | |
251 | if (!obj->used) { | |
c6a13b2c JH |
252 | if (show_dangling) |
253 | printf("dangling %s %s\n", typename(obj->type), | |
993a21b0 | 254 | describe_object(obj)); |
68f6c019 | 255 | if (write_lost_and_found) { |
fcd12db6 | 256 | char *filename = git_pathdup("lost-found/%s/%s", |
68f6c019 | 257 | obj->type == OBJ_COMMIT ? "commit" : "other", |
993a21b0 | 258 | describe_object(obj)); |
68f6c019 JS |
259 | FILE *f; |
260 | ||
dcf69262 | 261 | if (safe_create_leading_directories_const(filename)) { |
68f6c019 | 262 | error("Could not create lost-found"); |
fcd12db6 | 263 | free(filename); |
68f6c019 JS |
264 | return; |
265 | } | |
266 | if (!(f = fopen(filename, "w"))) | |
0721c314 | 267 | die_errno("Could not open '%s'", filename); |
16a7fcfe | 268 | if (obj->type == OBJ_BLOB) { |
7eda0e4f | 269 | if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1)) |
eb726f2d | 270 | die_errno("Could not write '%s'", filename); |
16a7fcfe | 271 | } else |
993a21b0 | 272 | fprintf(f, "%s\n", describe_object(obj)); |
47d32af2 | 273 | if (fclose(f)) |
d824cbba TR |
274 | die_errno("Could not finish '%s'", |
275 | filename); | |
fcd12db6 | 276 | free(filename); |
68f6c019 | 277 | } |
18af29f2 LT |
278 | return; |
279 | } | |
280 | ||
281 | /* | |
282 | * Otherwise? It's there, it's unreachable, and some other unreachable | |
283 | * object points to it. Ignore it - it's not interesting, and we showed | |
284 | * all the interesting cases above. | |
285 | */ | |
286 | } | |
287 | ||
288 | static void check_object(struct object *obj) | |
289 | { | |
20f1eb6b | 290 | if (verbose) |
993a21b0 | 291 | fprintf(stderr, "Checking %s\n", describe_object(obj)); |
20f1eb6b | 292 | |
18af29f2 LT |
293 | if (obj->flags & REACHABLE) |
294 | check_reachable_object(obj); | |
295 | else | |
296 | check_unreachable_object(obj); | |
297 | } | |
f1f0d088 | 298 | |
8ba0bbb2 LT |
299 | static void check_connectivity(void) |
300 | { | |
fc046a75 | 301 | int i, max; |
8ba0bbb2 | 302 | |
04d39759 LT |
303 | /* Traverse the pending reachable objects */ |
304 | traverse_reachable(); | |
305 | ||
8ba0bbb2 | 306 | /* Look up all the requirements, warn about missing objects.. */ |
fc046a75 | 307 | max = get_max_object_index(); |
20f1eb6b JS |
308 | if (verbose) |
309 | fprintf(stderr, "Checking connectivity (%d objects)\n", max); | |
310 | ||
fc046a75 | 311 | for (i = 0; i < max; i++) { |
fc046a75 | 312 | struct object *obj = get_indexed_object(i); |
8ba0bbb2 | 313 | |
18af29f2 LT |
314 | if (obj) |
315 | check_object(obj); | |
8ba0bbb2 LT |
316 | } |
317 | } | |
318 | ||
c9486eb0 | 319 | static int fsck_obj(struct object *obj) |
85003492 | 320 | { |
ba002f3b | 321 | if (obj->flags & SEEN) |
85003492 | 322 | return 0; |
ba002f3b | 323 | obj->flags |= SEEN; |
85003492 | 324 | |
20f1eb6b | 325 | if (verbose) |
ba002f3b | 326 | fprintf(stderr, "Checking %s %s\n", |
993a21b0 | 327 | typename(obj->type), describe_object(obj)); |
42ea9cb2 | 328 | |
22410549 | 329 | if (fsck_walk(obj, NULL, &fsck_obj_options)) |
ba002f3b | 330 | objerror(obj, "broken links"); |
22410549 | 331 | if (fsck_object(obj, NULL, 0, &fsck_obj_options)) |
ba002f3b | 332 | return -1; |
85003492 | 333 | |
ba002f3b MK |
334 | if (obj->type == OBJ_TREE) { |
335 | struct tree *item = (struct tree *) obj; | |
85003492 | 336 | |
6e454b9a | 337 | free_tree_buffer(item); |
1ea34e36 | 338 | } |
1ea34e36 | 339 | |
ba002f3b MK |
340 | if (obj->type == OBJ_COMMIT) { |
341 | struct commit *commit = (struct commit *) obj; | |
de2eb7f6 | 342 | |
0fb370da | 343 | free_commit_buffer(commit); |
4728b861 | 344 | |
ba002f3b | 345 | if (!commit->parents && show_root) |
993a21b0 | 346 | printf("root %s\n", describe_object(&commit->object)); |
ba002f3b | 347 | } |
92d4c85d | 348 | |
ba002f3b MK |
349 | if (obj->type == OBJ_TAG) { |
350 | struct tag *tag = (struct tag *) obj; | |
20f1eb6b | 351 | |
ba002f3b | 352 | if (show_tags && tag->tagged) { |
993a21b0 JS |
353 | printf("tagged %s %s", typename(tag->tagged->type), |
354 | describe_object(tag->tagged)); | |
355 | printf(" (%s) in %s\n", tag->tag, | |
356 | describe_object(&tag->object)); | |
ba002f3b | 357 | } |
92d4c85d | 358 | } |
889262ea | 359 | |
ff5ebe39 | 360 | return 0; |
20222118 LT |
361 | } |
362 | ||
c9486eb0 NTND |
363 | static int fsck_sha1(const unsigned char *sha1) |
364 | { | |
365 | struct object *obj = parse_object(sha1); | |
366 | if (!obj) { | |
367 | errors_found |= ERROR_OBJECT; | |
368 | return error("%s: object corrupt or missing", | |
369 | sha1_to_hex(sha1)); | |
370 | } | |
6e454b9a | 371 | obj->flags |= HAS_OBJ; |
c9486eb0 NTND |
372 | return fsck_obj(obj); |
373 | } | |
374 | ||
375 | static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type, | |
376 | unsigned long size, void *buffer, int *eaten) | |
377 | { | |
ec9d2249 NTND |
378 | /* |
379 | * Note, buffer may be NULL if type is OBJ_BLOB. See | |
380 | * verify_packfile(), data_valid variable for details. | |
381 | */ | |
c9486eb0 NTND |
382 | struct object *obj; |
383 | obj = parse_object_buffer(sha1, type, size, buffer, eaten); | |
384 | if (!obj) { | |
385 | errors_found |= ERROR_OBJECT; | |
386 | return error("%s: object corrupt or missing", sha1_to_hex(sha1)); | |
387 | } | |
6e454b9a | 388 | obj->flags = HAS_OBJ; |
c9486eb0 NTND |
389 | return fsck_obj(obj); |
390 | } | |
391 | ||
96f1e58f | 392 | static int default_refs; |
944d8589 | 393 | |
90cf590f JS |
394 | static void fsck_handle_reflog_sha1(const char *refname, unsigned char *sha1, |
395 | unsigned long timestamp) | |
55dd5526 JH |
396 | { |
397 | struct object *obj; | |
398 | ||
d66ae59b MH |
399 | if (!is_null_sha1(sha1)) { |
400 | obj = lookup_object(sha1); | |
55dd5526 | 401 | if (obj) { |
90cf590f JS |
402 | if (timestamp && name_objects) |
403 | add_decoration(fsck_walk_options.object_names, | |
404 | obj, | |
405 | xstrfmt("%s@{%ld}", refname, timestamp)); | |
55dd5526 | 406 | obj->used = 1; |
271b8d25 | 407 | mark_object_reachable(obj); |
19bf6c9b MH |
408 | } else { |
409 | error("%s: invalid reflog entry %s", refname, sha1_to_hex(sha1)); | |
410 | errors_found |= ERROR_REACHABLE; | |
55dd5526 JH |
411 | } |
412 | } | |
d66ae59b MH |
413 | } |
414 | ||
883d60fa JS |
415 | static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
416 | const char *email, unsigned long timestamp, int tz, | |
417 | const char *message, void *cb_data) | |
55dd5526 | 418 | { |
19bf6c9b | 419 | const char *refname = cb_data; |
55dd5526 | 420 | |
20f1eb6b JS |
421 | if (verbose) |
422 | fprintf(stderr, "Checking reflog %s->%s\n", | |
423 | sha1_to_hex(osha1), sha1_to_hex(nsha1)); | |
424 | ||
90cf590f JS |
425 | fsck_handle_reflog_sha1(refname, osha1, 0); |
426 | fsck_handle_reflog_sha1(refname, nsha1, timestamp); | |
55dd5526 JH |
427 | return 0; |
428 | } | |
429 | ||
635b99a0 MH |
430 | static int fsck_handle_reflog(const char *logname, const struct object_id *oid, |
431 | int flag, void *cb_data) | |
eb8381c8 | 432 | { |
19bf6c9b | 433 | for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname); |
eb8381c8 NP |
434 | return 0; |
435 | } | |
436 | ||
635b99a0 MH |
437 | static int fsck_handle_ref(const char *refname, const struct object_id *oid, |
438 | int flag, void *cb_data) | |
1024932f | 439 | { |
1024932f LT |
440 | struct object *obj; |
441 | ||
635b99a0 | 442 | obj = parse_object(oid->hash); |
8a498a05 | 443 | if (!obj) { |
635b99a0 | 444 | error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid)); |
30d1038d | 445 | errors_found |= ERROR_REACHABLE; |
944d8589 LT |
446 | /* We'll continue with the rest despite the error.. */ |
447 | return 0; | |
8a498a05 | 448 | } |
122f76f5 | 449 | if (obj->type != OBJ_COMMIT && is_branch(refname)) { |
6232f62b | 450 | error("%s: not a commit", refname); |
122f76f5 JH |
451 | errors_found |= ERROR_REFS; |
452 | } | |
944d8589 | 453 | default_refs++; |
1024932f | 454 | obj->used = 1; |
90cf590f JS |
455 | if (name_objects) |
456 | add_decoration(fsck_walk_options.object_names, | |
457 | obj, xstrdup(refname)); | |
271b8d25 | 458 | mark_object_reachable(obj); |
55dd5526 | 459 | |
7c4d07c7 | 460 | return 0; |
1024932f LT |
461 | } |
462 | ||
1024932f LT |
463 | static void get_default_heads(void) |
464 | { | |
635b99a0 MH |
465 | if (head_points_at && !is_null_oid(&head_oid)) |
466 | fsck_handle_ref("HEAD", &head_oid, 0, NULL); | |
467 | for_each_rawref(fsck_handle_ref, NULL); | |
566842f6 | 468 | if (include_reflogs) |
635b99a0 | 469 | for_each_reflog(fsck_handle_reflog, NULL); |
071fa89e LT |
470 | |
471 | /* | |
472 | * Not having any default heads isn't really fatal, but | |
473 | * it does mean that "--unreachable" no longer makes any | |
474 | * sense (since in this case everything will obviously | |
475 | * be unreachable by definition. | |
476 | * | |
477 | * Showing dangling objects is valid, though (as those | |
478 | * dangling objects are likely lost heads). | |
479 | * | |
480 | * So we just print a warning about it, and clear the | |
481 | * "show_unreachable" flag. | |
482 | */ | |
483 | if (!default_refs) { | |
8eb2d0be | 484 | fprintf(stderr, "notice: No default references\n"); |
071fa89e LT |
485 | show_unreachable = 0; |
486 | } | |
1024932f LT |
487 | } |
488 | ||
f0766bf9 JK |
489 | static int fsck_loose(const unsigned char *sha1, const char *path, void *data) |
490 | { | |
491 | if (fsck_sha1(sha1)) | |
492 | errors_found |= ERROR_OBJECT; | |
493 | return 0; | |
494 | } | |
495 | ||
496 | static int fsck_cruft(const char *basename, const char *path, void *data) | |
497 | { | |
498 | if (!starts_with(basename, "tmp_obj_")) | |
499 | fprintf(stderr, "bad sha1 file: %s\n", path); | |
500 | return 0; | |
501 | } | |
502 | ||
503 | static int fsck_subdir(int nr, const char *path, void *progress) | |
504 | { | |
505 | display_progress(progress, nr + 1); | |
506 | return 0; | |
507 | } | |
508 | ||
8a498a05 JH |
509 | static void fsck_object_dir(const char *path) |
510 | { | |
1e49f22f | 511 | struct progress *progress = NULL; |
20f1eb6b JS |
512 | |
513 | if (verbose) | |
514 | fprintf(stderr, "Checking object directory\n"); | |
515 | ||
1e49f22f | 516 | if (show_progress) |
754dbc43 | 517 | progress = start_progress(_("Checking object directories"), 256); |
f0766bf9 JK |
518 | |
519 | for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir, | |
520 | progress); | |
521 | display_progress(progress, 256); | |
1e49f22f | 522 | stop_progress(&progress); |
8a498a05 JH |
523 | } |
524 | ||
c3330383 LT |
525 | static int fsck_head_link(void) |
526 | { | |
8eb2d0be | 527 | int null_is_error = 0; |
8eb2d0be | 528 | |
20f1eb6b JS |
529 | if (verbose) |
530 | fprintf(stderr, "Checking HEAD link\n"); | |
531 | ||
95ae2c74 | 532 | head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid.hash, NULL); |
122f76f5 JH |
533 | if (!head_points_at) { |
534 | errors_found |= ERROR_REFS; | |
8eb2d0be | 535 | return error("Invalid HEAD"); |
122f76f5 | 536 | } |
8eb2d0be JH |
537 | if (!strcmp(head_points_at, "HEAD")) |
538 | /* detached HEAD */ | |
539 | null_is_error = 1; | |
122f76f5 JH |
540 | else if (!starts_with(head_points_at, "refs/heads/")) { |
541 | errors_found |= ERROR_REFS; | |
8098a178 | 542 | return error("HEAD points to something strange (%s)", |
5b10b091 | 543 | head_points_at); |
122f76f5 | 544 | } |
635b99a0 | 545 | if (is_null_oid(&head_oid)) { |
122f76f5 JH |
546 | if (null_is_error) { |
547 | errors_found |= ERROR_REFS; | |
8eb2d0be | 548 | return error("HEAD: detached HEAD points at nothing"); |
122f76f5 | 549 | } |
8eb2d0be JH |
550 | fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", |
551 | head_points_at + 11); | |
552 | } | |
c3330383 LT |
553 | return 0; |
554 | } | |
555 | ||
53dc3f3e JH |
556 | static int fsck_cache_tree(struct cache_tree *it) |
557 | { | |
558 | int i; | |
559 | int err = 0; | |
560 | ||
20f1eb6b JS |
561 | if (verbose) |
562 | fprintf(stderr, "Checking cache tree\n"); | |
563 | ||
53dc3f3e JH |
564 | if (0 <= it->entry_count) { |
565 | struct object *obj = parse_object(it->sha1); | |
6d60bbef JH |
566 | if (!obj) { |
567 | error("%s: invalid sha1 pointer in cache-tree", | |
568 | sha1_to_hex(it->sha1)); | |
122f76f5 | 569 | errors_found |= ERROR_REFS; |
6d60bbef JH |
570 | return 1; |
571 | } | |
cdc08b33 | 572 | obj->used = 1; |
90cf590f JS |
573 | if (name_objects) |
574 | add_decoration(fsck_walk_options.object_names, | |
575 | obj, xstrdup(":")); | |
a1cdc251 | 576 | mark_object_reachable(obj); |
1974632c | 577 | if (obj->type != OBJ_TREE) |
53dc3f3e JH |
578 | err |= objerror(obj, "non-tree in cache-tree"); |
579 | } | |
580 | for (i = 0; i < it->subtree_nr; i++) | |
581 | err |= fsck_cache_tree(it->down[i]->cache_tree); | |
582 | return err; | |
583 | } | |
584 | ||
3e3f8bd6 JK |
585 | static void mark_object_for_connectivity(const unsigned char *sha1) |
586 | { | |
587 | struct object *obj = lookup_object(sha1); | |
588 | ||
589 | /* | |
590 | * Setting the object type here isn't strictly necessary for a | |
591 | * connectivity check. In most cases, our walk will expect a certain | |
592 | * type (e.g., a tree referencing a blob) and will use lookup_blob() to | |
593 | * assign the type. But doing it here has two advantages: | |
594 | * | |
595 | * 1. When the fsck_walk code looks at objects that _don't_ come from | |
596 | * links (e.g., the tip of a ref), it may complain about the | |
597 | * "unknown object type". | |
598 | * | |
599 | * 2. This serves as a nice cross-check that the graph links are | |
600 | * sane. So --connectivity-only does not check that the bits of | |
601 | * blobs are not corrupted, but it _does_ check that 100644 tree | |
602 | * entries point to blobs, and so forth. | |
603 | * | |
604 | * Unfortunately we can't just use parse_object() here, because the | |
605 | * whole point of --connectivity-only is to avoid reading the object | |
606 | * data more than necessary. | |
607 | */ | |
608 | if (!obj || obj->type == OBJ_NONE) { | |
609 | enum object_type type = sha1_object_info(sha1, NULL); | |
610 | switch (type) { | |
611 | case OBJ_BAD: | |
612 | error("%s: unable to read object type", | |
613 | sha1_to_hex(sha1)); | |
614 | break; | |
615 | case OBJ_COMMIT: | |
616 | obj = (struct object *)lookup_commit(sha1); | |
617 | break; | |
618 | case OBJ_TREE: | |
619 | obj = (struct object *)lookup_tree(sha1); | |
620 | break; | |
621 | case OBJ_BLOB: | |
622 | obj = (struct object *)lookup_blob(sha1); | |
623 | break; | |
624 | case OBJ_TAG: | |
625 | obj = (struct object *)lookup_tag(sha1); | |
626 | break; | |
627 | default: | |
628 | error("%s: unknown object type %d", | |
629 | sha1_to_hex(sha1), type); | |
630 | } | |
631 | ||
632 | if (!obj || obj->type == OBJ_NONE) { | |
633 | errors_found |= ERROR_OBJECT; | |
634 | return; | |
635 | } | |
636 | } | |
637 | ||
638 | obj->flags |= HAS_OBJ; | |
639 | } | |
640 | ||
641 | static int mark_loose_for_connectivity(const unsigned char *sha1, | |
642 | const char *path, | |
643 | void *data) | |
644 | { | |
645 | mark_object_for_connectivity(sha1); | |
646 | return 0; | |
647 | } | |
648 | ||
649 | static int mark_packed_for_connectivity(const unsigned char *sha1, | |
650 | struct packed_git *pack, | |
651 | uint32_t pos, | |
652 | void *data) | |
653 | { | |
654 | mark_object_for_connectivity(sha1); | |
655 | return 0; | |
656 | } | |
657 | ||
5ac0a206 | 658 | static char const * const fsck_usage[] = { |
9c9b4f2f | 659 | N_("git fsck [<options>] [<object>...]"), |
5ac0a206 PH |
660 | NULL |
661 | }; | |
662 | ||
663 | static struct option fsck_opts[] = { | |
cf8fe315 | 664 | OPT__VERBOSE(&verbose, N_("be verbose")), |
d5d09d47 | 665 | OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")), |
cf8fe315 | 666 | OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")), |
d5d09d47 SB |
667 | OPT_BOOL(0, "tags", &show_tags, N_("report tags")), |
668 | OPT_BOOL(0, "root", &show_root, N_("report root nodes")), | |
669 | OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")), | |
670 | OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")), | |
671 | OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")), | |
02976bf8 | 672 | OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")), |
d5d09d47 SB |
673 | OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")), |
674 | OPT_BOOL(0, "lost-found", &write_lost_and_found, | |
cf8fe315 NTND |
675 | N_("write dangling objects in .git/lost-found")), |
676 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), | |
90cf590f | 677 | OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")), |
5ac0a206 PH |
678 | OPT_END(), |
679 | }; | |
e2b4f635 | 680 | |
baffc0e7 | 681 | int cmd_fsck(int argc, const char **argv, const char *prefix) |
20222118 | 682 | { |
bcee6fd8 | 683 | int i, heads; |
e15ef669 | 684 | struct alternate_object_database *alt; |
20222118 | 685 | |
e2b4f635 | 686 | errors_found = 0; |
afc711b8 | 687 | check_replace_refs = 0; |
61e2b015 | 688 | |
37782920 | 689 | argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); |
1e49f22f | 690 | |
22410549 JS |
691 | fsck_walk_options.walk = mark_object; |
692 | fsck_obj_options.walk = mark_used; | |
693 | fsck_obj_options.error_func = fsck_error_func; | |
694 | if (check_strict) | |
695 | fsck_obj_options.strict = 1; | |
696 | ||
1e49f22f NTND |
697 | if (show_progress == -1) |
698 | show_progress = isatty(2); | |
699 | if (verbose) | |
700 | show_progress = 0; | |
701 | ||
5ac0a206 PH |
702 | if (write_lost_and_found) { |
703 | check_full = 1; | |
704 | include_reflogs = 0; | |
889262ea LT |
705 | } |
706 | ||
90cf590f JS |
707 | if (name_objects) |
708 | fsck_walk_options.object_names = | |
709 | xcalloc(1, sizeof(struct decoration)); | |
710 | ||
2becf00f JS |
711 | git_config(fsck_config, NULL); |
712 | ||
c3330383 | 713 | fsck_head_link(); |
3e3f8bd6 JK |
714 | if (connectivity_only) { |
715 | for_each_loose_object(mark_loose_for_connectivity, NULL, 0); | |
716 | for_each_packed_object(mark_packed_for_connectivity, NULL, 0); | |
717 | } else { | |
02976bf8 | 718 | fsck_object_dir(get_object_directory()); |
e15ef669 | 719 | |
fbe85e73 | 720 | prepare_alt_odb(); |
597f9134 JK |
721 | for (alt = alt_odb_list; alt; alt = alt->next) |
722 | fsck_object_dir(alt->path); | |
e15ef669 | 723 | |
3e3f8bd6 JK |
724 | if (check_full) { |
725 | struct packed_git *p; | |
726 | uint32_t total = 0, count = 0; | |
727 | struct progress *progress = NULL; | |
728 | ||
729 | prepare_packed_git(); | |
e15ef669 | 730 | |
3e3f8bd6 JK |
731 | if (show_progress) { |
732 | for (p = packed_git; p; p = p->next) { | |
733 | if (open_pack_index(p)) | |
734 | continue; | |
735 | total += p->num_objects; | |
736 | } | |
1e49f22f | 737 | |
3e3f8bd6 JK |
738 | progress = start_progress(_("Checking objects"), total); |
739 | } | |
1e49f22f | 740 | for (p = packed_git; p; p = p->next) { |
3e3f8bd6 JK |
741 | /* verify gives error messages itself */ |
742 | if (verify_pack(p, fsck_obj_buffer, | |
743 | progress, count)) | |
744 | errors_found |= ERROR_PACK; | |
745 | count += p->num_objects; | |
1e49f22f | 746 | } |
3e3f8bd6 | 747 | stop_progress(&progress); |
1e49f22f | 748 | } |
bcee6fd8 LT |
749 | } |
750 | ||
751 | heads = 0; | |
3aed2fda | 752 | for (i = 0; i < argc; i++) { |
a6080a0a | 753 | const char *arg = argv[i]; |
469e2ebf JH |
754 | unsigned char sha1[20]; |
755 | if (!get_sha1(arg, sha1)) { | |
756 | struct object *obj = lookup_object(sha1); | |
e1a1388d | 757 | |
c6c7b16d JK |
758 | if (!obj) { |
759 | error("%s: object missing", sha1_to_hex(sha1)); | |
760 | errors_found |= ERROR_OBJECT; | |
e1a1388d | 761 | continue; |
c6c7b16d | 762 | } |
e1a1388d | 763 | |
ff5ebe39 | 764 | obj->used = 1; |
90cf590f JS |
765 | if (name_objects) |
766 | add_decoration(fsck_walk_options.object_names, | |
767 | obj, xstrdup(arg)); | |
271b8d25 | 768 | mark_object_reachable(obj); |
bcee6fd8 | 769 | heads++; |
d9839e03 LT |
770 | continue; |
771 | } | |
f1f0d088 | 772 | error("invalid parameter: expected sha1, got '%s'", arg); |
c6c7b16d | 773 | errors_found |= ERROR_OBJECT; |
d9839e03 | 774 | } |
d9839e03 | 775 | |
1024932f | 776 | /* |
d1af002d | 777 | * If we've not been given any explicit head information, do the |
e7bd907d LT |
778 | * default ones from .git/refs. We also consider the index file |
779 | * in this case (ie this implies --cache). | |
1024932f | 780 | */ |
e7bd907d | 781 | if (!heads) { |
1024932f LT |
782 | get_default_heads(); |
783 | keep_cache_objects = 1; | |
784 | } | |
785 | ||
ae7c0c92 | 786 | if (keep_cache_objects) { |
ae7c0c92 JH |
787 | read_cache(); |
788 | for (i = 0; i < active_nr; i++) { | |
8d9721c8 LT |
789 | unsigned int mode; |
790 | struct blob *blob; | |
ae7c0c92 | 791 | struct object *obj; |
8d9721c8 | 792 | |
7a51ed66 | 793 | mode = active_cache[i]->ce_mode; |
302b9282 | 794 | if (S_ISGITLINK(mode)) |
8d9721c8 | 795 | continue; |
99d1a986 | 796 | blob = lookup_blob(active_cache[i]->oid.hash); |
ae7c0c92 JH |
797 | if (!blob) |
798 | continue; | |
799 | obj = &blob->object; | |
800 | obj->used = 1; | |
90cf590f JS |
801 | if (name_objects) |
802 | add_decoration(fsck_walk_options.object_names, | |
803 | obj, | |
804 | xstrfmt(":%s", active_cache[i]->name)); | |
271b8d25 | 805 | mark_object_reachable(obj); |
ae7c0c92 | 806 | } |
53dc3f3e JH |
807 | if (active_cache_tree) |
808 | fsck_cache_tree(active_cache_tree); | |
ae7c0c92 JH |
809 | } |
810 | ||
8ba0bbb2 | 811 | check_connectivity(); |
e2b4f635 | 812 | return errors_found; |
20222118 | 813 | } |