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1 | #include "builtin.h" | |
2 | #include "cache.h" | |
3 | #include "repository.h" | |
4 | #include "config.h" | |
5 | #include "commit.h" | |
6 | #include "tree.h" | |
7 | #include "blob.h" | |
8 | #include "tag.h" | |
9 | #include "refs.h" | |
10 | #include "pack.h" | |
11 | #include "cache-tree.h" | |
12 | #include "tree-walk.h" | |
13 | #include "fsck.h" | |
14 | #include "parse-options.h" | |
15 | #include "dir.h" | |
16 | #include "progress.h" | |
17 | #include "streaming.h" | |
18 | #include "decorate.h" | |
19 | #include "packfile.h" | |
20 | #include "object-store.h" | |
21 | ||
22 | #define REACHABLE 0x0001 | |
23 | #define SEEN 0x0002 | |
24 | #define HAS_OBJ 0x0004 | |
25 | /* This flag is set if something points to this object. */ | |
26 | #define USED 0x0008 | |
27 | ||
28 | static int show_root; | |
29 | static int show_tags; | |
30 | static int show_unreachable; | |
31 | static int include_reflogs = 1; | |
32 | static int check_full = 1; | |
33 | static int connectivity_only; | |
34 | static int check_strict; | |
35 | static int keep_cache_objects; | |
36 | static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT; | |
37 | static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT; | |
38 | static struct object_id head_oid; | |
39 | static const char *head_points_at; | |
40 | static int errors_found; | |
41 | static int write_lost_and_found; | |
42 | static int verbose; | |
43 | static int show_progress = -1; | |
44 | static int show_dangling = 1; | |
45 | static int name_objects; | |
46 | #define ERROR_OBJECT 01 | |
47 | #define ERROR_REACHABLE 02 | |
48 | #define ERROR_PACK 04 | |
49 | #define ERROR_REFS 010 | |
50 | ||
51 | static const char *describe_object(struct object *obj) | |
52 | { | |
53 | static struct strbuf buf = STRBUF_INIT; | |
54 | char *name = name_objects ? | |
55 | lookup_decoration(fsck_walk_options.object_names, obj) : NULL; | |
56 | ||
57 | strbuf_reset(&buf); | |
58 | strbuf_addstr(&buf, oid_to_hex(&obj->oid)); | |
59 | if (name) | |
60 | strbuf_addf(&buf, " (%s)", name); | |
61 | ||
62 | return buf.buf; | |
63 | } | |
64 | ||
65 | static const char *printable_type(struct object *obj) | |
66 | { | |
67 | const char *ret; | |
68 | ||
69 | if (obj->type == OBJ_NONE) { | |
70 | enum object_type type = oid_object_info(&obj->oid, NULL); | |
71 | if (type > 0) | |
72 | object_as_type(obj, type, 0); | |
73 | } | |
74 | ||
75 | ret = type_name(obj->type); | |
76 | if (!ret) | |
77 | ret = "unknown"; | |
78 | ||
79 | return ret; | |
80 | } | |
81 | ||
82 | static int fsck_config(const char *var, const char *value, void *cb) | |
83 | { | |
84 | if (strcmp(var, "fsck.skiplist") == 0) { | |
85 | const char *path; | |
86 | struct strbuf sb = STRBUF_INIT; | |
87 | ||
88 | if (git_config_pathname(&path, var, value)) | |
89 | return 1; | |
90 | strbuf_addf(&sb, "skiplist=%s", path); | |
91 | free((char *)path); | |
92 | fsck_set_msg_types(&fsck_obj_options, sb.buf); | |
93 | strbuf_release(&sb); | |
94 | return 0; | |
95 | } | |
96 | ||
97 | if (skip_prefix(var, "fsck.", &var)) { | |
98 | fsck_set_msg_type(&fsck_obj_options, var, value); | |
99 | return 0; | |
100 | } | |
101 | ||
102 | return git_default_config(var, value, cb); | |
103 | } | |
104 | ||
105 | static void objreport(struct object *obj, const char *msg_type, | |
106 | const char *err) | |
107 | { | |
108 | fprintf(stderr, "%s in %s %s: %s\n", | |
109 | msg_type, printable_type(obj), describe_object(obj), err); | |
110 | } | |
111 | ||
112 | static int objerror(struct object *obj, const char *err) | |
113 | { | |
114 | errors_found |= ERROR_OBJECT; | |
115 | objreport(obj, "error", err); | |
116 | return -1; | |
117 | } | |
118 | ||
119 | static int fsck_error_func(struct fsck_options *o, | |
120 | struct object *obj, int type, const char *message) | |
121 | { | |
122 | objreport(obj, (type == FSCK_WARN) ? "warning" : "error", message); | |
123 | return (type == FSCK_WARN) ? 0 : 1; | |
124 | } | |
125 | ||
126 | static struct object_array pending; | |
127 | ||
128 | static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options) | |
129 | { | |
130 | struct object *parent = data; | |
131 | ||
132 | /* | |
133 | * The only case data is NULL or type is OBJ_ANY is when | |
134 | * mark_object_reachable() calls us. All the callers of | |
135 | * that function has non-NULL obj hence ... | |
136 | */ | |
137 | if (!obj) { | |
138 | /* ... these references to parent->fld are safe here */ | |
139 | printf("broken link from %7s %s\n", | |
140 | printable_type(parent), describe_object(parent)); | |
141 | printf("broken link from %7s %s\n", | |
142 | (type == OBJ_ANY ? "unknown" : type_name(type)), "unknown"); | |
143 | errors_found |= ERROR_REACHABLE; | |
144 | return 1; | |
145 | } | |
146 | ||
147 | if (type != OBJ_ANY && obj->type != type) | |
148 | /* ... and the reference to parent is safe here */ | |
149 | objerror(parent, "wrong object type in link"); | |
150 | ||
151 | if (obj->flags & REACHABLE) | |
152 | return 0; | |
153 | obj->flags |= REACHABLE; | |
154 | ||
155 | if (is_promisor_object(&obj->oid)) | |
156 | /* | |
157 | * Further recursion does not need to be performed on this | |
158 | * object since it is a promisor object (so it does not need to | |
159 | * be added to "pending"). | |
160 | */ | |
161 | return 0; | |
162 | ||
163 | if (!(obj->flags & HAS_OBJ)) { | |
164 | if (parent && !has_object_file(&obj->oid)) { | |
165 | printf("broken link from %7s %s\n", | |
166 | printable_type(parent), describe_object(parent)); | |
167 | printf(" to %7s %s\n", | |
168 | printable_type(obj), describe_object(obj)); | |
169 | errors_found |= ERROR_REACHABLE; | |
170 | } | |
171 | return 1; | |
172 | } | |
173 | ||
174 | add_object_array(obj, NULL, &pending); | |
175 | return 0; | |
176 | } | |
177 | ||
178 | static void mark_object_reachable(struct object *obj) | |
179 | { | |
180 | mark_object(obj, OBJ_ANY, NULL, NULL); | |
181 | } | |
182 | ||
183 | static int traverse_one_object(struct object *obj) | |
184 | { | |
185 | int result = fsck_walk(obj, obj, &fsck_walk_options); | |
186 | ||
187 | if (obj->type == OBJ_TREE) { | |
188 | struct tree *tree = (struct tree *)obj; | |
189 | free_tree_buffer(tree); | |
190 | } | |
191 | return result; | |
192 | } | |
193 | ||
194 | static int traverse_reachable(void) | |
195 | { | |
196 | struct progress *progress = NULL; | |
197 | unsigned int nr = 0; | |
198 | int result = 0; | |
199 | if (show_progress) | |
200 | progress = start_delayed_progress(_("Checking connectivity"), 0); | |
201 | while (pending.nr) { | |
202 | result |= traverse_one_object(object_array_pop(&pending)); | |
203 | display_progress(progress, ++nr); | |
204 | } | |
205 | stop_progress(&progress); | |
206 | return !!result; | |
207 | } | |
208 | ||
209 | static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options) | |
210 | { | |
211 | if (!obj) | |
212 | return 1; | |
213 | obj->flags |= USED; | |
214 | return 0; | |
215 | } | |
216 | ||
217 | /* | |
218 | * Check a single reachable object | |
219 | */ | |
220 | static void check_reachable_object(struct object *obj) | |
221 | { | |
222 | /* | |
223 | * We obviously want the object to be parsed, | |
224 | * except if it was in a pack-file and we didn't | |
225 | * do a full fsck | |
226 | */ | |
227 | if (!(obj->flags & HAS_OBJ)) { | |
228 | if (is_promisor_object(&obj->oid)) | |
229 | return; | |
230 | if (has_sha1_pack(obj->oid.hash)) | |
231 | return; /* it is in pack - forget about it */ | |
232 | printf("missing %s %s\n", printable_type(obj), | |
233 | describe_object(obj)); | |
234 | errors_found |= ERROR_REACHABLE; | |
235 | return; | |
236 | } | |
237 | } | |
238 | ||
239 | /* | |
240 | * Check a single unreachable object | |
241 | */ | |
242 | static void check_unreachable_object(struct object *obj) | |
243 | { | |
244 | /* | |
245 | * Missing unreachable object? Ignore it. It's not like | |
246 | * we miss it (since it can't be reached), nor do we want | |
247 | * to complain about it being unreachable (since it does | |
248 | * not exist). | |
249 | */ | |
250 | if (!(obj->flags & HAS_OBJ)) | |
251 | return; | |
252 | ||
253 | /* | |
254 | * Unreachable object that exists? Show it if asked to, | |
255 | * since this is something that is prunable. | |
256 | */ | |
257 | if (show_unreachable) { | |
258 | printf("unreachable %s %s\n", printable_type(obj), | |
259 | describe_object(obj)); | |
260 | return; | |
261 | } | |
262 | ||
263 | /* | |
264 | * "!USED" means that nothing at all points to it, including | |
265 | * other unreachable objects. In other words, it's the "tip" | |
266 | * of some set of unreachable objects, usually a commit that | |
267 | * got dropped. | |
268 | * | |
269 | * Such starting points are more interesting than some random | |
270 | * set of unreachable objects, so we show them even if the user | |
271 | * hasn't asked for _all_ unreachable objects. If you have | |
272 | * deleted a branch by mistake, this is a prime candidate to | |
273 | * start looking at, for example. | |
274 | */ | |
275 | if (!(obj->flags & USED)) { | |
276 | if (show_dangling) | |
277 | printf("dangling %s %s\n", printable_type(obj), | |
278 | describe_object(obj)); | |
279 | if (write_lost_and_found) { | |
280 | char *filename = git_pathdup("lost-found/%s/%s", | |
281 | obj->type == OBJ_COMMIT ? "commit" : "other", | |
282 | describe_object(obj)); | |
283 | FILE *f; | |
284 | ||
285 | if (safe_create_leading_directories_const(filename)) { | |
286 | error("Could not create lost-found"); | |
287 | free(filename); | |
288 | return; | |
289 | } | |
290 | f = xfopen(filename, "w"); | |
291 | if (obj->type == OBJ_BLOB) { | |
292 | if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1)) | |
293 | die_errno("Could not write '%s'", filename); | |
294 | } else | |
295 | fprintf(f, "%s\n", describe_object(obj)); | |
296 | if (fclose(f)) | |
297 | die_errno("Could not finish '%s'", | |
298 | filename); | |
299 | free(filename); | |
300 | } | |
301 | return; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Otherwise? It's there, it's unreachable, and some other unreachable | |
306 | * object points to it. Ignore it - it's not interesting, and we showed | |
307 | * all the interesting cases above. | |
308 | */ | |
309 | } | |
310 | ||
311 | static void check_object(struct object *obj) | |
312 | { | |
313 | if (verbose) | |
314 | fprintf(stderr, "Checking %s\n", describe_object(obj)); | |
315 | ||
316 | if (obj->flags & REACHABLE) | |
317 | check_reachable_object(obj); | |
318 | else | |
319 | check_unreachable_object(obj); | |
320 | } | |
321 | ||
322 | static void check_connectivity(void) | |
323 | { | |
324 | int i, max; | |
325 | ||
326 | /* Traverse the pending reachable objects */ | |
327 | traverse_reachable(); | |
328 | ||
329 | /* Look up all the requirements, warn about missing objects.. */ | |
330 | max = get_max_object_index(); | |
331 | if (verbose) | |
332 | fprintf(stderr, "Checking connectivity (%d objects)\n", max); | |
333 | ||
334 | for (i = 0; i < max; i++) { | |
335 | struct object *obj = get_indexed_object(i); | |
336 | ||
337 | if (obj) | |
338 | check_object(obj); | |
339 | } | |
340 | } | |
341 | ||
342 | static int fsck_obj(struct object *obj) | |
343 | { | |
344 | int err; | |
345 | ||
346 | if (obj->flags & SEEN) | |
347 | return 0; | |
348 | obj->flags |= SEEN; | |
349 | ||
350 | if (verbose) | |
351 | fprintf(stderr, "Checking %s %s\n", | |
352 | printable_type(obj), describe_object(obj)); | |
353 | ||
354 | if (fsck_walk(obj, NULL, &fsck_obj_options)) | |
355 | objerror(obj, "broken links"); | |
356 | err = fsck_object(obj, NULL, 0, &fsck_obj_options); | |
357 | if (err) | |
358 | goto out; | |
359 | ||
360 | if (obj->type == OBJ_COMMIT) { | |
361 | struct commit *commit = (struct commit *) obj; | |
362 | ||
363 | if (!commit->parents && show_root) | |
364 | printf("root %s\n", describe_object(&commit->object)); | |
365 | } | |
366 | ||
367 | if (obj->type == OBJ_TAG) { | |
368 | struct tag *tag = (struct tag *) obj; | |
369 | ||
370 | if (show_tags && tag->tagged) { | |
371 | printf("tagged %s %s", printable_type(tag->tagged), | |
372 | describe_object(tag->tagged)); | |
373 | printf(" (%s) in %s\n", tag->tag, | |
374 | describe_object(&tag->object)); | |
375 | } | |
376 | } | |
377 | ||
378 | out: | |
379 | if (obj->type == OBJ_TREE) | |
380 | free_tree_buffer((struct tree *)obj); | |
381 | if (obj->type == OBJ_COMMIT) | |
382 | free_commit_buffer((struct commit *)obj); | |
383 | return err; | |
384 | } | |
385 | ||
386 | static int fsck_obj_buffer(const struct object_id *oid, enum object_type type, | |
387 | unsigned long size, void *buffer, int *eaten) | |
388 | { | |
389 | /* | |
390 | * Note, buffer may be NULL if type is OBJ_BLOB. See | |
391 | * verify_packfile(), data_valid variable for details. | |
392 | */ | |
393 | struct object *obj; | |
394 | obj = parse_object_buffer(oid, type, size, buffer, eaten); | |
395 | if (!obj) { | |
396 | errors_found |= ERROR_OBJECT; | |
397 | return error("%s: object corrupt or missing", oid_to_hex(oid)); | |
398 | } | |
399 | obj->flags &= ~(REACHABLE | SEEN); | |
400 | obj->flags |= HAS_OBJ; | |
401 | return fsck_obj(obj); | |
402 | } | |
403 | ||
404 | static int default_refs; | |
405 | ||
406 | static void fsck_handle_reflog_oid(const char *refname, struct object_id *oid, | |
407 | timestamp_t timestamp) | |
408 | { | |
409 | struct object *obj; | |
410 | ||
411 | if (!is_null_oid(oid)) { | |
412 | obj = lookup_object(oid->hash); | |
413 | if (obj && (obj->flags & HAS_OBJ)) { | |
414 | if (timestamp && name_objects) | |
415 | add_decoration(fsck_walk_options.object_names, | |
416 | obj, | |
417 | xstrfmt("%s@{%"PRItime"}", refname, timestamp)); | |
418 | obj->flags |= USED; | |
419 | mark_object_reachable(obj); | |
420 | } else if (!is_promisor_object(oid)) { | |
421 | error("%s: invalid reflog entry %s", refname, oid_to_hex(oid)); | |
422 | errors_found |= ERROR_REACHABLE; | |
423 | } | |
424 | } | |
425 | } | |
426 | ||
427 | static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid, | |
428 | const char *email, timestamp_t timestamp, int tz, | |
429 | const char *message, void *cb_data) | |
430 | { | |
431 | const char *refname = cb_data; | |
432 | ||
433 | if (verbose) | |
434 | fprintf(stderr, "Checking reflog %s->%s\n", | |
435 | oid_to_hex(ooid), oid_to_hex(noid)); | |
436 | ||
437 | fsck_handle_reflog_oid(refname, ooid, 0); | |
438 | fsck_handle_reflog_oid(refname, noid, timestamp); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | static int fsck_handle_reflog(const char *logname, const struct object_id *oid, | |
443 | int flag, void *cb_data) | |
444 | { | |
445 | for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname); | |
446 | return 0; | |
447 | } | |
448 | ||
449 | static int fsck_handle_ref(const char *refname, const struct object_id *oid, | |
450 | int flag, void *cb_data) | |
451 | { | |
452 | struct object *obj; | |
453 | ||
454 | obj = parse_object(oid); | |
455 | if (!obj) { | |
456 | if (is_promisor_object(oid)) { | |
457 | /* | |
458 | * Increment default_refs anyway, because this is a | |
459 | * valid ref. | |
460 | */ | |
461 | default_refs++; | |
462 | return 0; | |
463 | } | |
464 | error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid)); | |
465 | errors_found |= ERROR_REACHABLE; | |
466 | /* We'll continue with the rest despite the error.. */ | |
467 | return 0; | |
468 | } | |
469 | if (obj->type != OBJ_COMMIT && is_branch(refname)) { | |
470 | error("%s: not a commit", refname); | |
471 | errors_found |= ERROR_REFS; | |
472 | } | |
473 | default_refs++; | |
474 | obj->flags |= USED; | |
475 | if (name_objects) | |
476 | add_decoration(fsck_walk_options.object_names, | |
477 | obj, xstrdup(refname)); | |
478 | mark_object_reachable(obj); | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | static void get_default_heads(void) | |
484 | { | |
485 | if (head_points_at && !is_null_oid(&head_oid)) | |
486 | fsck_handle_ref("HEAD", &head_oid, 0, NULL); | |
487 | for_each_rawref(fsck_handle_ref, NULL); | |
488 | if (include_reflogs) | |
489 | for_each_reflog(fsck_handle_reflog, NULL); | |
490 | ||
491 | /* | |
492 | * Not having any default heads isn't really fatal, but | |
493 | * it does mean that "--unreachable" no longer makes any | |
494 | * sense (since in this case everything will obviously | |
495 | * be unreachable by definition. | |
496 | * | |
497 | * Showing dangling objects is valid, though (as those | |
498 | * dangling objects are likely lost heads). | |
499 | * | |
500 | * So we just print a warning about it, and clear the | |
501 | * "show_unreachable" flag. | |
502 | */ | |
503 | if (!default_refs) { | |
504 | fprintf(stderr, "notice: No default references\n"); | |
505 | show_unreachable = 0; | |
506 | } | |
507 | } | |
508 | ||
509 | static struct object *parse_loose_object(const struct object_id *oid, | |
510 | const char *path) | |
511 | { | |
512 | struct object *obj; | |
513 | void *contents; | |
514 | enum object_type type; | |
515 | unsigned long size; | |
516 | int eaten; | |
517 | ||
518 | if (read_loose_object(path, oid, &type, &size, &contents) < 0) | |
519 | return NULL; | |
520 | ||
521 | if (!contents && type != OBJ_BLOB) | |
522 | die("BUG: read_loose_object streamed a non-blob"); | |
523 | ||
524 | obj = parse_object_buffer(oid, type, size, contents, &eaten); | |
525 | ||
526 | if (!eaten) | |
527 | free(contents); | |
528 | return obj; | |
529 | } | |
530 | ||
531 | static int fsck_loose(const struct object_id *oid, const char *path, void *data) | |
532 | { | |
533 | struct object *obj = parse_loose_object(oid, path); | |
534 | ||
535 | if (!obj) { | |
536 | errors_found |= ERROR_OBJECT; | |
537 | error("%s: object corrupt or missing: %s", | |
538 | oid_to_hex(oid), path); | |
539 | return 0; /* keep checking other objects */ | |
540 | } | |
541 | ||
542 | obj->flags &= ~(REACHABLE | SEEN); | |
543 | obj->flags |= HAS_OBJ; | |
544 | if (fsck_obj(obj)) | |
545 | errors_found |= ERROR_OBJECT; | |
546 | return 0; | |
547 | } | |
548 | ||
549 | static int fsck_cruft(const char *basename, const char *path, void *data) | |
550 | { | |
551 | if (!starts_with(basename, "tmp_obj_")) | |
552 | fprintf(stderr, "bad sha1 file: %s\n", path); | |
553 | return 0; | |
554 | } | |
555 | ||
556 | static int fsck_subdir(unsigned int nr, const char *path, void *progress) | |
557 | { | |
558 | display_progress(progress, nr + 1); | |
559 | return 0; | |
560 | } | |
561 | ||
562 | static void fsck_object_dir(const char *path) | |
563 | { | |
564 | struct progress *progress = NULL; | |
565 | ||
566 | if (verbose) | |
567 | fprintf(stderr, "Checking object directory\n"); | |
568 | ||
569 | if (show_progress) | |
570 | progress = start_progress(_("Checking object directories"), 256); | |
571 | ||
572 | for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir, | |
573 | progress); | |
574 | display_progress(progress, 256); | |
575 | stop_progress(&progress); | |
576 | } | |
577 | ||
578 | static int fsck_head_link(void) | |
579 | { | |
580 | int null_is_error = 0; | |
581 | ||
582 | if (verbose) | |
583 | fprintf(stderr, "Checking HEAD link\n"); | |
584 | ||
585 | head_points_at = resolve_ref_unsafe("HEAD", 0, &head_oid, NULL); | |
586 | if (!head_points_at) { | |
587 | errors_found |= ERROR_REFS; | |
588 | return error("Invalid HEAD"); | |
589 | } | |
590 | if (!strcmp(head_points_at, "HEAD")) | |
591 | /* detached HEAD */ | |
592 | null_is_error = 1; | |
593 | else if (!starts_with(head_points_at, "refs/heads/")) { | |
594 | errors_found |= ERROR_REFS; | |
595 | return error("HEAD points to something strange (%s)", | |
596 | head_points_at); | |
597 | } | |
598 | if (is_null_oid(&head_oid)) { | |
599 | if (null_is_error) { | |
600 | errors_found |= ERROR_REFS; | |
601 | return error("HEAD: detached HEAD points at nothing"); | |
602 | } | |
603 | fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", | |
604 | head_points_at + 11); | |
605 | } | |
606 | return 0; | |
607 | } | |
608 | ||
609 | static int fsck_cache_tree(struct cache_tree *it) | |
610 | { | |
611 | int i; | |
612 | int err = 0; | |
613 | ||
614 | if (verbose) | |
615 | fprintf(stderr, "Checking cache tree\n"); | |
616 | ||
617 | if (0 <= it->entry_count) { | |
618 | struct object *obj = parse_object(&it->oid); | |
619 | if (!obj) { | |
620 | error("%s: invalid sha1 pointer in cache-tree", | |
621 | oid_to_hex(&it->oid)); | |
622 | errors_found |= ERROR_REFS; | |
623 | return 1; | |
624 | } | |
625 | obj->flags |= USED; | |
626 | if (name_objects) | |
627 | add_decoration(fsck_walk_options.object_names, | |
628 | obj, xstrdup(":")); | |
629 | mark_object_reachable(obj); | |
630 | if (obj->type != OBJ_TREE) | |
631 | err |= objerror(obj, "non-tree in cache-tree"); | |
632 | } | |
633 | for (i = 0; i < it->subtree_nr; i++) | |
634 | err |= fsck_cache_tree(it->down[i]->cache_tree); | |
635 | return err; | |
636 | } | |
637 | ||
638 | static void mark_object_for_connectivity(const struct object_id *oid) | |
639 | { | |
640 | struct object *obj = lookup_unknown_object(oid->hash); | |
641 | obj->flags |= HAS_OBJ; | |
642 | } | |
643 | ||
644 | static int mark_loose_for_connectivity(const struct object_id *oid, | |
645 | const char *path, | |
646 | void *data) | |
647 | { | |
648 | mark_object_for_connectivity(oid); | |
649 | return 0; | |
650 | } | |
651 | ||
652 | static int mark_packed_for_connectivity(const struct object_id *oid, | |
653 | struct packed_git *pack, | |
654 | uint32_t pos, | |
655 | void *data) | |
656 | { | |
657 | mark_object_for_connectivity(oid); | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static char const * const fsck_usage[] = { | |
662 | N_("git fsck [<options>] [<object>...]"), | |
663 | NULL | |
664 | }; | |
665 | ||
666 | static struct option fsck_opts[] = { | |
667 | OPT__VERBOSE(&verbose, N_("be verbose")), | |
668 | OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")), | |
669 | OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")), | |
670 | OPT_BOOL(0, "tags", &show_tags, N_("report tags")), | |
671 | OPT_BOOL(0, "root", &show_root, N_("report root nodes")), | |
672 | OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")), | |
673 | OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")), | |
674 | OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")), | |
675 | OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")), | |
676 | OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")), | |
677 | OPT_BOOL(0, "lost-found", &write_lost_and_found, | |
678 | N_("write dangling objects in .git/lost-found")), | |
679 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), | |
680 | OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")), | |
681 | OPT_END(), | |
682 | }; | |
683 | ||
684 | int cmd_fsck(int argc, const char **argv, const char *prefix) | |
685 | { | |
686 | int i; | |
687 | struct alternate_object_database *alt; | |
688 | ||
689 | /* fsck knows how to handle missing promisor objects */ | |
690 | fetch_if_missing = 0; | |
691 | ||
692 | errors_found = 0; | |
693 | check_replace_refs = 0; | |
694 | ||
695 | argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); | |
696 | ||
697 | fsck_walk_options.walk = mark_object; | |
698 | fsck_obj_options.walk = mark_used; | |
699 | fsck_obj_options.error_func = fsck_error_func; | |
700 | if (check_strict) | |
701 | fsck_obj_options.strict = 1; | |
702 | ||
703 | if (show_progress == -1) | |
704 | show_progress = isatty(2); | |
705 | if (verbose) | |
706 | show_progress = 0; | |
707 | ||
708 | if (write_lost_and_found) { | |
709 | check_full = 1; | |
710 | include_reflogs = 0; | |
711 | } | |
712 | ||
713 | if (name_objects) | |
714 | fsck_walk_options.object_names = | |
715 | xcalloc(1, sizeof(struct decoration)); | |
716 | ||
717 | git_config(fsck_config, NULL); | |
718 | ||
719 | fsck_head_link(); | |
720 | if (connectivity_only) { | |
721 | for_each_loose_object(mark_loose_for_connectivity, NULL, 0); | |
722 | for_each_packed_object(mark_packed_for_connectivity, NULL, 0); | |
723 | } else { | |
724 | struct alternate_object_database *alt_odb_list; | |
725 | ||
726 | fsck_object_dir(get_object_directory()); | |
727 | ||
728 | prepare_alt_odb(the_repository); | |
729 | alt_odb_list = the_repository->objects->alt_odb_list; | |
730 | for (alt = alt_odb_list; alt; alt = alt->next) | |
731 | fsck_object_dir(alt->path); | |
732 | ||
733 | if (check_full) { | |
734 | struct packed_git *p; | |
735 | uint32_t total = 0, count = 0; | |
736 | struct progress *progress = NULL; | |
737 | ||
738 | if (show_progress) { | |
739 | for (p = get_packed_git(the_repository); p; | |
740 | p = p->next) { | |
741 | if (open_pack_index(p)) | |
742 | continue; | |
743 | total += p->num_objects; | |
744 | } | |
745 | ||
746 | progress = start_progress(_("Checking objects"), total); | |
747 | } | |
748 | for (p = get_packed_git(the_repository); p; | |
749 | p = p->next) { | |
750 | /* verify gives error messages itself */ | |
751 | if (verify_pack(p, fsck_obj_buffer, | |
752 | progress, count)) | |
753 | errors_found |= ERROR_PACK; | |
754 | count += p->num_objects; | |
755 | } | |
756 | stop_progress(&progress); | |
757 | } | |
758 | } | |
759 | ||
760 | for (i = 0; i < argc; i++) { | |
761 | const char *arg = argv[i]; | |
762 | struct object_id oid; | |
763 | if (!get_oid(arg, &oid)) { | |
764 | struct object *obj = lookup_object(oid.hash); | |
765 | ||
766 | if (!obj || !(obj->flags & HAS_OBJ)) { | |
767 | if (is_promisor_object(&oid)) | |
768 | continue; | |
769 | error("%s: object missing", oid_to_hex(&oid)); | |
770 | errors_found |= ERROR_OBJECT; | |
771 | continue; | |
772 | } | |
773 | ||
774 | obj->flags |= USED; | |
775 | if (name_objects) | |
776 | add_decoration(fsck_walk_options.object_names, | |
777 | obj, xstrdup(arg)); | |
778 | mark_object_reachable(obj); | |
779 | continue; | |
780 | } | |
781 | error("invalid parameter: expected sha1, got '%s'", arg); | |
782 | errors_found |= ERROR_OBJECT; | |
783 | } | |
784 | ||
785 | /* | |
786 | * If we've not been given any explicit head information, do the | |
787 | * default ones from .git/refs. We also consider the index file | |
788 | * in this case (ie this implies --cache). | |
789 | */ | |
790 | if (!argc) { | |
791 | get_default_heads(); | |
792 | keep_cache_objects = 1; | |
793 | } | |
794 | ||
795 | if (keep_cache_objects) { | |
796 | verify_index_checksum = 1; | |
797 | verify_ce_order = 1; | |
798 | read_cache(); | |
799 | for (i = 0; i < active_nr; i++) { | |
800 | unsigned int mode; | |
801 | struct blob *blob; | |
802 | struct object *obj; | |
803 | ||
804 | mode = active_cache[i]->ce_mode; | |
805 | if (S_ISGITLINK(mode)) | |
806 | continue; | |
807 | blob = lookup_blob(&active_cache[i]->oid); | |
808 | if (!blob) | |
809 | continue; | |
810 | obj = &blob->object; | |
811 | obj->flags |= USED; | |
812 | if (name_objects) | |
813 | add_decoration(fsck_walk_options.object_names, | |
814 | obj, | |
815 | xstrfmt(":%s", active_cache[i]->name)); | |
816 | mark_object_reachable(obj); | |
817 | } | |
818 | if (active_cache_tree) | |
819 | fsck_cache_tree(active_cache_tree); | |
820 | } | |
821 | ||
822 | check_connectivity(); | |
823 | return errors_found; | |
824 | } |