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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 | ||
97ca7ca8 JK |
59 | static const char *printable_type(struct object *obj) |
60 | { | |
61 | const char *ret; | |
62 | ||
a2b22854 JK |
63 | if (obj->type == OBJ_NONE) { |
64 | enum object_type type = sha1_object_info(obj->oid.hash, NULL); | |
65 | if (type > 0) | |
66 | object_as_type(obj, type, 0); | |
67 | } | |
68 | ||
97ca7ca8 JK |
69 | ret = typename(obj->type); |
70 | if (!ret) | |
71 | ret = "unknown"; | |
72 | ||
73 | return ret; | |
74 | } | |
75 | ||
2becf00f | 76 | static int fsck_config(const char *var, const char *value, void *cb) |
f1f0d088 | 77 | { |
1335f732 JS |
78 | if (strcmp(var, "fsck.skiplist") == 0) { |
79 | const char *path; | |
80 | struct strbuf sb = STRBUF_INIT; | |
81 | ||
82 | if (git_config_pathname(&path, var, value)) | |
83 | return 1; | |
84 | strbuf_addf(&sb, "skiplist=%s", path); | |
85 | free((char *)path); | |
86 | fsck_set_msg_types(&fsck_obj_options, sb.buf); | |
87 | strbuf_release(&sb); | |
88 | return 0; | |
89 | } | |
90 | ||
2becf00f JS |
91 | if (skip_prefix(var, "fsck.", &var)) { |
92 | fsck_set_msg_type(&fsck_obj_options, var, value); | |
93 | return 0; | |
94 | } | |
95 | ||
96 | return git_default_config(var, value, cb); | |
97 | } | |
98 | ||
c99ba492 JS |
99 | static void objreport(struct object *obj, const char *msg_type, |
100 | const char *err) | |
f1f0d088 | 101 | { |
c99ba492 | 102 | fprintf(stderr, "%s in %s %s: %s\n", |
97ca7ca8 | 103 | msg_type, printable_type(obj), describe_object(obj), err); |
f1f0d088 PB |
104 | } |
105 | ||
c99ba492 | 106 | static int objerror(struct object *obj, const char *err) |
f1f0d088 | 107 | { |
e2b4f635 | 108 | errors_found |= ERROR_OBJECT; |
c99ba492 | 109 | objreport(obj, "error", err); |
f1f0d088 PB |
110 | return -1; |
111 | } | |
112 | ||
1cd772cc JS |
113 | static int fsck_error_func(struct fsck_options *o, |
114 | struct object *obj, int type, const char *message) | |
f1f0d088 | 115 | { |
c99ba492 | 116 | objreport(obj, (type == FSCK_WARN) ? "warning" : "error", message); |
ba002f3b | 117 | return (type == FSCK_WARN) ? 0 : 1; |
f1f0d088 PB |
118 | } |
119 | ||
04d39759 LT |
120 | static struct object_array pending; |
121 | ||
22410549 | 122 | static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 | 123 | { |
271b8d25 | 124 | struct object *parent = data; |
271b8d25 | 125 | |
a1cdc251 JH |
126 | /* |
127 | * The only case data is NULL or type is OBJ_ANY is when | |
128 | * mark_object_reachable() calls us. All the callers of | |
129 | * that function has non-NULL obj hence ... | |
130 | */ | |
271b8d25 | 131 | if (!obj) { |
a1cdc251 | 132 | /* ... these references to parent->fld are safe here */ |
271b8d25 | 133 | printf("broken link from %7s %s\n", |
97ca7ca8 | 134 | printable_type(parent), describe_object(parent)); |
271b8d25 MK |
135 | printf("broken link from %7s %s\n", |
136 | (type == OBJ_ANY ? "unknown" : typename(type)), "unknown"); | |
137 | errors_found |= ERROR_REACHABLE; | |
138 | return 1; | |
139 | } | |
140 | ||
141 | if (type != OBJ_ANY && obj->type != type) | |
a1cdc251 | 142 | /* ... and the reference to parent is safe here */ |
271b8d25 MK |
143 | objerror(parent, "wrong object type in link"); |
144 | ||
145 | if (obj->flags & REACHABLE) | |
146 | return 0; | |
147 | obj->flags |= REACHABLE; | |
6e454b9a | 148 | if (!(obj->flags & HAS_OBJ)) { |
f2fd0760 | 149 | if (parent && !has_object_file(&obj->oid)) { |
271b8d25 | 150 | printf("broken link from %7s %s\n", |
97ca7ca8 | 151 | printable_type(parent), describe_object(parent)); |
271b8d25 | 152 | printf(" to %7s %s\n", |
97ca7ca8 | 153 | printable_type(obj), describe_object(obj)); |
271b8d25 MK |
154 | errors_found |= ERROR_REACHABLE; |
155 | } | |
156 | return 1; | |
157 | } | |
158 | ||
16aa3bfc | 159 | add_object_array(obj, NULL, &pending); |
04d39759 LT |
160 | return 0; |
161 | } | |
162 | ||
163 | static void mark_object_reachable(struct object *obj) | |
164 | { | |
22410549 | 165 | mark_object(obj, OBJ_ANY, NULL, NULL); |
04d39759 LT |
166 | } |
167 | ||
a1cdc251 | 168 | static int traverse_one_object(struct object *obj) |
04d39759 LT |
169 | { |
170 | int result; | |
171 | struct tree *tree = NULL; | |
172 | ||
271b8d25 | 173 | if (obj->type == OBJ_TREE) { |
271b8d25 MK |
174 | tree = (struct tree *)obj; |
175 | if (parse_tree(tree) < 0) | |
176 | return 1; /* error already displayed */ | |
177 | } | |
22410549 | 178 | result = fsck_walk(obj, obj, &fsck_walk_options); |
6e454b9a JK |
179 | if (tree) |
180 | free_tree_buffer(tree); | |
271b8d25 MK |
181 | return result; |
182 | } | |
183 | ||
04d39759 | 184 | static int traverse_reachable(void) |
271b8d25 | 185 | { |
1e49f22f NTND |
186 | struct progress *progress = NULL; |
187 | unsigned int nr = 0; | |
04d39759 | 188 | int result = 0; |
1e49f22f | 189 | if (show_progress) |
754dbc43 | 190 | progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2); |
04d39759 LT |
191 | while (pending.nr) { |
192 | struct object_array_entry *entry; | |
c0aa335c | 193 | struct object *obj; |
04d39759 LT |
194 | |
195 | entry = pending.objects + --pending.nr; | |
196 | obj = entry->item; | |
a1cdc251 | 197 | result |= traverse_one_object(obj); |
1e49f22f | 198 | display_progress(progress, ++nr); |
04d39759 | 199 | } |
1e49f22f | 200 | stop_progress(&progress); |
04d39759 | 201 | return !!result; |
271b8d25 MK |
202 | } |
203 | ||
22410549 | 204 | static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 MK |
205 | { |
206 | if (!obj) | |
207 | return 1; | |
208 | obj->used = 1; | |
209 | return 0; | |
f1f0d088 PB |
210 | } |
211 | ||
18af29f2 LT |
212 | /* |
213 | * Check a single reachable object | |
214 | */ | |
215 | static void check_reachable_object(struct object *obj) | |
216 | { | |
18af29f2 LT |
217 | /* |
218 | * We obviously want the object to be parsed, | |
219 | * except if it was in a pack-file and we didn't | |
220 | * do a full fsck | |
221 | */ | |
6e454b9a | 222 | if (!(obj->flags & HAS_OBJ)) { |
ed1c9977 | 223 | if (has_sha1_pack(obj->oid.hash)) |
18af29f2 | 224 | return; /* it is in pack - forget about it */ |
97ca7ca8 | 225 | printf("missing %s %s\n", printable_type(obj), |
993a21b0 | 226 | describe_object(obj)); |
e2b4f635 | 227 | errors_found |= ERROR_REACHABLE; |
18af29f2 LT |
228 | return; |
229 | } | |
18af29f2 LT |
230 | } |
231 | ||
232 | /* | |
233 | * Check a single unreachable object | |
234 | */ | |
235 | static void check_unreachable_object(struct object *obj) | |
236 | { | |
237 | /* | |
238 | * Missing unreachable object? Ignore it. It's not like | |
239 | * we miss it (since it can't be reached), nor do we want | |
240 | * to complain about it being unreachable (since it does | |
241 | * not exist). | |
242 | */ | |
b4584e4f | 243 | if (!(obj->flags & HAS_OBJ)) |
18af29f2 LT |
244 | return; |
245 | ||
246 | /* | |
247 | * Unreachable object that exists? Show it if asked to, | |
248 | * since this is something that is prunable. | |
249 | */ | |
250 | if (show_unreachable) { | |
97ca7ca8 | 251 | printf("unreachable %s %s\n", printable_type(obj), |
993a21b0 | 252 | describe_object(obj)); |
18af29f2 LT |
253 | return; |
254 | } | |
255 | ||
256 | /* | |
257 | * "!used" means that nothing at all points to it, including | |
3dff5379 | 258 | * other unreachable objects. In other words, it's the "tip" |
18af29f2 LT |
259 | * of some set of unreachable objects, usually a commit that |
260 | * got dropped. | |
261 | * | |
262 | * Such starting points are more interesting than some random | |
263 | * set of unreachable objects, so we show them even if the user | |
264 | * hasn't asked for _all_ unreachable objects. If you have | |
265 | * deleted a branch by mistake, this is a prime candidate to | |
266 | * start looking at, for example. | |
267 | */ | |
268 | if (!obj->used) { | |
c6a13b2c | 269 | if (show_dangling) |
97ca7ca8 | 270 | printf("dangling %s %s\n", printable_type(obj), |
993a21b0 | 271 | describe_object(obj)); |
68f6c019 | 272 | if (write_lost_and_found) { |
fcd12db6 | 273 | char *filename = git_pathdup("lost-found/%s/%s", |
68f6c019 | 274 | obj->type == OBJ_COMMIT ? "commit" : "other", |
993a21b0 | 275 | describe_object(obj)); |
68f6c019 JS |
276 | FILE *f; |
277 | ||
dcf69262 | 278 | if (safe_create_leading_directories_const(filename)) { |
68f6c019 | 279 | error("Could not create lost-found"); |
fcd12db6 | 280 | free(filename); |
68f6c019 JS |
281 | return; |
282 | } | |
283 | if (!(f = fopen(filename, "w"))) | |
0721c314 | 284 | die_errno("Could not open '%s'", filename); |
16a7fcfe | 285 | if (obj->type == OBJ_BLOB) { |
7eda0e4f | 286 | if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1)) |
eb726f2d | 287 | die_errno("Could not write '%s'", filename); |
16a7fcfe | 288 | } else |
993a21b0 | 289 | fprintf(f, "%s\n", describe_object(obj)); |
47d32af2 | 290 | if (fclose(f)) |
d824cbba TR |
291 | die_errno("Could not finish '%s'", |
292 | filename); | |
fcd12db6 | 293 | free(filename); |
68f6c019 | 294 | } |
18af29f2 LT |
295 | return; |
296 | } | |
297 | ||
298 | /* | |
299 | * Otherwise? It's there, it's unreachable, and some other unreachable | |
300 | * object points to it. Ignore it - it's not interesting, and we showed | |
301 | * all the interesting cases above. | |
302 | */ | |
303 | } | |
304 | ||
305 | static void check_object(struct object *obj) | |
306 | { | |
20f1eb6b | 307 | if (verbose) |
993a21b0 | 308 | fprintf(stderr, "Checking %s\n", describe_object(obj)); |
20f1eb6b | 309 | |
18af29f2 LT |
310 | if (obj->flags & REACHABLE) |
311 | check_reachable_object(obj); | |
312 | else | |
313 | check_unreachable_object(obj); | |
314 | } | |
f1f0d088 | 315 | |
8ba0bbb2 LT |
316 | static void check_connectivity(void) |
317 | { | |
fc046a75 | 318 | int i, max; |
8ba0bbb2 | 319 | |
04d39759 LT |
320 | /* Traverse the pending reachable objects */ |
321 | traverse_reachable(); | |
322 | ||
8ba0bbb2 | 323 | /* Look up all the requirements, warn about missing objects.. */ |
fc046a75 | 324 | max = get_max_object_index(); |
20f1eb6b JS |
325 | if (verbose) |
326 | fprintf(stderr, "Checking connectivity (%d objects)\n", max); | |
327 | ||
fc046a75 | 328 | for (i = 0; i < max; i++) { |
fc046a75 | 329 | struct object *obj = get_indexed_object(i); |
8ba0bbb2 | 330 | |
18af29f2 LT |
331 | if (obj) |
332 | check_object(obj); | |
8ba0bbb2 LT |
333 | } |
334 | } | |
335 | ||
c9486eb0 | 336 | static int fsck_obj(struct object *obj) |
85003492 | 337 | { |
ba002f3b | 338 | if (obj->flags & SEEN) |
85003492 | 339 | return 0; |
ba002f3b | 340 | obj->flags |= SEEN; |
85003492 | 341 | |
20f1eb6b | 342 | if (verbose) |
ba002f3b | 343 | fprintf(stderr, "Checking %s %s\n", |
97ca7ca8 | 344 | printable_type(obj), describe_object(obj)); |
42ea9cb2 | 345 | |
22410549 | 346 | if (fsck_walk(obj, NULL, &fsck_obj_options)) |
ba002f3b | 347 | objerror(obj, "broken links"); |
22410549 | 348 | if (fsck_object(obj, NULL, 0, &fsck_obj_options)) |
ba002f3b | 349 | return -1; |
85003492 | 350 | |
ba002f3b MK |
351 | if (obj->type == OBJ_TREE) { |
352 | struct tree *item = (struct tree *) obj; | |
85003492 | 353 | |
6e454b9a | 354 | free_tree_buffer(item); |
1ea34e36 | 355 | } |
1ea34e36 | 356 | |
ba002f3b MK |
357 | if (obj->type == OBJ_COMMIT) { |
358 | struct commit *commit = (struct commit *) obj; | |
de2eb7f6 | 359 | |
0fb370da | 360 | free_commit_buffer(commit); |
4728b861 | 361 | |
ba002f3b | 362 | if (!commit->parents && show_root) |
993a21b0 | 363 | printf("root %s\n", describe_object(&commit->object)); |
ba002f3b | 364 | } |
92d4c85d | 365 | |
ba002f3b MK |
366 | if (obj->type == OBJ_TAG) { |
367 | struct tag *tag = (struct tag *) obj; | |
20f1eb6b | 368 | |
ba002f3b | 369 | if (show_tags && tag->tagged) { |
97ca7ca8 | 370 | printf("tagged %s %s", printable_type(tag->tagged), |
993a21b0 JS |
371 | describe_object(tag->tagged)); |
372 | printf(" (%s) in %s\n", tag->tag, | |
373 | describe_object(&tag->object)); | |
ba002f3b | 374 | } |
92d4c85d | 375 | } |
889262ea | 376 | |
ff5ebe39 | 377 | return 0; |
20222118 LT |
378 | } |
379 | ||
9fd75046 | 380 | static int fsck_obj_buffer(const struct object_id *oid, enum object_type type, |
c9486eb0 NTND |
381 | unsigned long size, void *buffer, int *eaten) |
382 | { | |
ec9d2249 NTND |
383 | /* |
384 | * Note, buffer may be NULL if type is OBJ_BLOB. See | |
385 | * verify_packfile(), data_valid variable for details. | |
386 | */ | |
c9486eb0 | 387 | struct object *obj; |
9fd75046 | 388 | obj = parse_object_buffer(oid->hash, type, size, buffer, eaten); |
c9486eb0 NTND |
389 | if (!obj) { |
390 | errors_found |= ERROR_OBJECT; | |
9fd75046 | 391 | return error("%s: object corrupt or missing", oid_to_hex(oid)); |
c9486eb0 | 392 | } |
6e454b9a | 393 | obj->flags = HAS_OBJ; |
c9486eb0 NTND |
394 | return fsck_obj(obj); |
395 | } | |
396 | ||
96f1e58f | 397 | static int default_refs; |
944d8589 | 398 | |
9461d272 | 399 | static void fsck_handle_reflog_oid(const char *refname, struct object_id *oid, |
90cf590f | 400 | unsigned long timestamp) |
55dd5526 JH |
401 | { |
402 | struct object *obj; | |
403 | ||
9461d272 | 404 | if (!is_null_oid(oid)) { |
405 | obj = lookup_object(oid->hash); | |
c2d17b3b | 406 | if (obj && (obj->flags & HAS_OBJ)) { |
90cf590f JS |
407 | if (timestamp && name_objects) |
408 | add_decoration(fsck_walk_options.object_names, | |
409 | obj, | |
410 | xstrfmt("%s@{%ld}", refname, timestamp)); | |
55dd5526 | 411 | obj->used = 1; |
271b8d25 | 412 | mark_object_reachable(obj); |
19bf6c9b | 413 | } else { |
9461d272 | 414 | error("%s: invalid reflog entry %s", refname, oid_to_hex(oid)); |
19bf6c9b | 415 | errors_found |= ERROR_REACHABLE; |
55dd5526 JH |
416 | } |
417 | } | |
d66ae59b MH |
418 | } |
419 | ||
9461d272 | 420 | static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid, |
883d60fa JS |
421 | const char *email, unsigned long timestamp, int tz, |
422 | const char *message, void *cb_data) | |
55dd5526 | 423 | { |
19bf6c9b | 424 | const char *refname = cb_data; |
55dd5526 | 425 | |
20f1eb6b JS |
426 | if (verbose) |
427 | fprintf(stderr, "Checking reflog %s->%s\n", | |
9461d272 | 428 | oid_to_hex(ooid), oid_to_hex(noid)); |
20f1eb6b | 429 | |
9461d272 | 430 | fsck_handle_reflog_oid(refname, ooid, 0); |
431 | fsck_handle_reflog_oid(refname, noid, timestamp); | |
55dd5526 JH |
432 | return 0; |
433 | } | |
434 | ||
635b99a0 MH |
435 | static int fsck_handle_reflog(const char *logname, const struct object_id *oid, |
436 | int flag, void *cb_data) | |
eb8381c8 | 437 | { |
19bf6c9b | 438 | for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname); |
eb8381c8 NP |
439 | return 0; |
440 | } | |
441 | ||
635b99a0 MH |
442 | static int fsck_handle_ref(const char *refname, const struct object_id *oid, |
443 | int flag, void *cb_data) | |
1024932f | 444 | { |
1024932f LT |
445 | struct object *obj; |
446 | ||
635b99a0 | 447 | obj = parse_object(oid->hash); |
8a498a05 | 448 | if (!obj) { |
635b99a0 | 449 | error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid)); |
30d1038d | 450 | errors_found |= ERROR_REACHABLE; |
944d8589 LT |
451 | /* We'll continue with the rest despite the error.. */ |
452 | return 0; | |
8a498a05 | 453 | } |
122f76f5 | 454 | if (obj->type != OBJ_COMMIT && is_branch(refname)) { |
6232f62b | 455 | error("%s: not a commit", refname); |
122f76f5 JH |
456 | errors_found |= ERROR_REFS; |
457 | } | |
944d8589 | 458 | default_refs++; |
1024932f | 459 | obj->used = 1; |
90cf590f JS |
460 | if (name_objects) |
461 | add_decoration(fsck_walk_options.object_names, | |
462 | obj, xstrdup(refname)); | |
271b8d25 | 463 | mark_object_reachable(obj); |
55dd5526 | 464 | |
7c4d07c7 | 465 | return 0; |
1024932f LT |
466 | } |
467 | ||
1024932f LT |
468 | static void get_default_heads(void) |
469 | { | |
635b99a0 MH |
470 | if (head_points_at && !is_null_oid(&head_oid)) |
471 | fsck_handle_ref("HEAD", &head_oid, 0, NULL); | |
472 | for_each_rawref(fsck_handle_ref, NULL); | |
566842f6 | 473 | if (include_reflogs) |
635b99a0 | 474 | for_each_reflog(fsck_handle_reflog, NULL); |
071fa89e LT |
475 | |
476 | /* | |
477 | * Not having any default heads isn't really fatal, but | |
478 | * it does mean that "--unreachable" no longer makes any | |
479 | * sense (since in this case everything will obviously | |
480 | * be unreachable by definition. | |
481 | * | |
482 | * Showing dangling objects is valid, though (as those | |
483 | * dangling objects are likely lost heads). | |
484 | * | |
485 | * So we just print a warning about it, and clear the | |
486 | * "show_unreachable" flag. | |
487 | */ | |
488 | if (!default_refs) { | |
8eb2d0be | 489 | fprintf(stderr, "notice: No default references\n"); |
071fa89e LT |
490 | show_unreachable = 0; |
491 | } | |
1024932f LT |
492 | } |
493 | ||
76c1d9a0 | 494 | static struct object *parse_loose_object(const struct object_id *oid, |
c68b489e JK |
495 | const char *path) |
496 | { | |
497 | struct object *obj; | |
498 | void *contents; | |
499 | enum object_type type; | |
500 | unsigned long size; | |
501 | int eaten; | |
502 | ||
76c1d9a0 | 503 | if (read_loose_object(path, oid->hash, &type, &size, &contents) < 0) |
c68b489e JK |
504 | return NULL; |
505 | ||
506 | if (!contents && type != OBJ_BLOB) | |
507 | die("BUG: read_loose_object streamed a non-blob"); | |
508 | ||
76c1d9a0 | 509 | obj = parse_object_buffer(oid->hash, type, size, contents, &eaten); |
c68b489e JK |
510 | |
511 | if (!eaten) | |
512 | free(contents); | |
513 | return obj; | |
514 | } | |
515 | ||
76c1d9a0 | 516 | static int fsck_loose(const struct object_id *oid, const char *path, void *data) |
f0766bf9 | 517 | { |
76c1d9a0 | 518 | struct object *obj = parse_loose_object(oid, path); |
c68b489e JK |
519 | |
520 | if (!obj) { | |
521 | errors_found |= ERROR_OBJECT; | |
522 | error("%s: object corrupt or missing: %s", | |
76c1d9a0 | 523 | oid_to_hex(oid), path); |
c68b489e JK |
524 | return 0; /* keep checking other objects */ |
525 | } | |
526 | ||
527 | obj->flags = HAS_OBJ; | |
528 | if (fsck_obj(obj)) | |
f0766bf9 JK |
529 | errors_found |= ERROR_OBJECT; |
530 | return 0; | |
531 | } | |
532 | ||
533 | static int fsck_cruft(const char *basename, const char *path, void *data) | |
534 | { | |
535 | if (!starts_with(basename, "tmp_obj_")) | |
536 | fprintf(stderr, "bad sha1 file: %s\n", path); | |
537 | return 0; | |
538 | } | |
539 | ||
540 | static int fsck_subdir(int nr, const char *path, void *progress) | |
541 | { | |
542 | display_progress(progress, nr + 1); | |
543 | return 0; | |
544 | } | |
545 | ||
8a498a05 JH |
546 | static void fsck_object_dir(const char *path) |
547 | { | |
1e49f22f | 548 | struct progress *progress = NULL; |
20f1eb6b JS |
549 | |
550 | if (verbose) | |
551 | fprintf(stderr, "Checking object directory\n"); | |
552 | ||
1e49f22f | 553 | if (show_progress) |
754dbc43 | 554 | progress = start_progress(_("Checking object directories"), 256); |
f0766bf9 JK |
555 | |
556 | for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir, | |
557 | progress); | |
558 | display_progress(progress, 256); | |
1e49f22f | 559 | stop_progress(&progress); |
8a498a05 JH |
560 | } |
561 | ||
c3330383 LT |
562 | static int fsck_head_link(void) |
563 | { | |
8eb2d0be | 564 | int null_is_error = 0; |
8eb2d0be | 565 | |
20f1eb6b JS |
566 | if (verbose) |
567 | fprintf(stderr, "Checking HEAD link\n"); | |
568 | ||
95ae2c74 | 569 | head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid.hash, NULL); |
122f76f5 JH |
570 | if (!head_points_at) { |
571 | errors_found |= ERROR_REFS; | |
8eb2d0be | 572 | return error("Invalid HEAD"); |
122f76f5 | 573 | } |
8eb2d0be JH |
574 | if (!strcmp(head_points_at, "HEAD")) |
575 | /* detached HEAD */ | |
576 | null_is_error = 1; | |
122f76f5 JH |
577 | else if (!starts_with(head_points_at, "refs/heads/")) { |
578 | errors_found |= ERROR_REFS; | |
8098a178 | 579 | return error("HEAD points to something strange (%s)", |
5b10b091 | 580 | head_points_at); |
122f76f5 | 581 | } |
635b99a0 | 582 | if (is_null_oid(&head_oid)) { |
122f76f5 JH |
583 | if (null_is_error) { |
584 | errors_found |= ERROR_REFS; | |
8eb2d0be | 585 | return error("HEAD: detached HEAD points at nothing"); |
122f76f5 | 586 | } |
8eb2d0be JH |
587 | fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", |
588 | head_points_at + 11); | |
589 | } | |
c3330383 LT |
590 | return 0; |
591 | } | |
592 | ||
53dc3f3e JH |
593 | static int fsck_cache_tree(struct cache_tree *it) |
594 | { | |
595 | int i; | |
596 | int err = 0; | |
597 | ||
20f1eb6b JS |
598 | if (verbose) |
599 | fprintf(stderr, "Checking cache tree\n"); | |
600 | ||
53dc3f3e | 601 | if (0 <= it->entry_count) { |
e0a92804 | 602 | struct object *obj = parse_object(it->oid.hash); |
6d60bbef JH |
603 | if (!obj) { |
604 | error("%s: invalid sha1 pointer in cache-tree", | |
e0a92804 | 605 | oid_to_hex(&it->oid)); |
122f76f5 | 606 | errors_found |= ERROR_REFS; |
6d60bbef JH |
607 | return 1; |
608 | } | |
cdc08b33 | 609 | obj->used = 1; |
90cf590f JS |
610 | if (name_objects) |
611 | add_decoration(fsck_walk_options.object_names, | |
612 | obj, xstrdup(":")); | |
a1cdc251 | 613 | mark_object_reachable(obj); |
1974632c | 614 | if (obj->type != OBJ_TREE) |
53dc3f3e JH |
615 | err |= objerror(obj, "non-tree in cache-tree"); |
616 | } | |
617 | for (i = 0; i < it->subtree_nr; i++) | |
618 | err |= fsck_cache_tree(it->down[i]->cache_tree); | |
619 | return err; | |
620 | } | |
621 | ||
76c1d9a0 | 622 | static void mark_object_for_connectivity(const struct object_id *oid) |
3e3f8bd6 | 623 | { |
76c1d9a0 | 624 | struct object *obj = lookup_unknown_object(oid->hash); |
3e3f8bd6 JK |
625 | obj->flags |= HAS_OBJ; |
626 | } | |
627 | ||
76c1d9a0 | 628 | static int mark_loose_for_connectivity(const struct object_id *oid, |
3e3f8bd6 JK |
629 | const char *path, |
630 | void *data) | |
631 | { | |
76c1d9a0 | 632 | mark_object_for_connectivity(oid); |
3e3f8bd6 JK |
633 | return 0; |
634 | } | |
635 | ||
76c1d9a0 | 636 | static int mark_packed_for_connectivity(const struct object_id *oid, |
3e3f8bd6 JK |
637 | struct packed_git *pack, |
638 | uint32_t pos, | |
639 | void *data) | |
640 | { | |
76c1d9a0 | 641 | mark_object_for_connectivity(oid); |
3e3f8bd6 JK |
642 | return 0; |
643 | } | |
644 | ||
5ac0a206 | 645 | static char const * const fsck_usage[] = { |
9c9b4f2f | 646 | N_("git fsck [<options>] [<object>...]"), |
5ac0a206 PH |
647 | NULL |
648 | }; | |
649 | ||
650 | static struct option fsck_opts[] = { | |
cf8fe315 | 651 | OPT__VERBOSE(&verbose, N_("be verbose")), |
d5d09d47 | 652 | OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")), |
cf8fe315 | 653 | OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")), |
d5d09d47 SB |
654 | OPT_BOOL(0, "tags", &show_tags, N_("report tags")), |
655 | OPT_BOOL(0, "root", &show_root, N_("report root nodes")), | |
656 | OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")), | |
657 | OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")), | |
658 | OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")), | |
02976bf8 | 659 | OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")), |
d5d09d47 SB |
660 | OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")), |
661 | OPT_BOOL(0, "lost-found", &write_lost_and_found, | |
cf8fe315 NTND |
662 | N_("write dangling objects in .git/lost-found")), |
663 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), | |
90cf590f | 664 | OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")), |
5ac0a206 PH |
665 | OPT_END(), |
666 | }; | |
e2b4f635 | 667 | |
baffc0e7 | 668 | int cmd_fsck(int argc, const char **argv, const char *prefix) |
20222118 | 669 | { |
bcee6fd8 | 670 | int i, heads; |
e15ef669 | 671 | struct alternate_object_database *alt; |
20222118 | 672 | |
e2b4f635 | 673 | errors_found = 0; |
afc711b8 | 674 | check_replace_refs = 0; |
61e2b015 | 675 | |
37782920 | 676 | argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); |
1e49f22f | 677 | |
22410549 JS |
678 | fsck_walk_options.walk = mark_object; |
679 | fsck_obj_options.walk = mark_used; | |
680 | fsck_obj_options.error_func = fsck_error_func; | |
681 | if (check_strict) | |
682 | fsck_obj_options.strict = 1; | |
683 | ||
1e49f22f NTND |
684 | if (show_progress == -1) |
685 | show_progress = isatty(2); | |
686 | if (verbose) | |
687 | show_progress = 0; | |
688 | ||
5ac0a206 PH |
689 | if (write_lost_and_found) { |
690 | check_full = 1; | |
691 | include_reflogs = 0; | |
889262ea LT |
692 | } |
693 | ||
90cf590f JS |
694 | if (name_objects) |
695 | fsck_walk_options.object_names = | |
696 | xcalloc(1, sizeof(struct decoration)); | |
697 | ||
2becf00f JS |
698 | git_config(fsck_config, NULL); |
699 | ||
c3330383 | 700 | fsck_head_link(); |
3e3f8bd6 JK |
701 | if (connectivity_only) { |
702 | for_each_loose_object(mark_loose_for_connectivity, NULL, 0); | |
703 | for_each_packed_object(mark_packed_for_connectivity, NULL, 0); | |
704 | } else { | |
02976bf8 | 705 | fsck_object_dir(get_object_directory()); |
e15ef669 | 706 | |
fbe85e73 | 707 | prepare_alt_odb(); |
597f9134 JK |
708 | for (alt = alt_odb_list; alt; alt = alt->next) |
709 | fsck_object_dir(alt->path); | |
e15ef669 | 710 | |
3e3f8bd6 JK |
711 | if (check_full) { |
712 | struct packed_git *p; | |
713 | uint32_t total = 0, count = 0; | |
714 | struct progress *progress = NULL; | |
e15ef669 | 715 | |
3e3f8bd6 | 716 | prepare_packed_git(); |
1e49f22f | 717 | |
3e3f8bd6 JK |
718 | if (show_progress) { |
719 | for (p = packed_git; p; p = p->next) { | |
720 | if (open_pack_index(p)) | |
721 | continue; | |
722 | total += p->num_objects; | |
723 | } | |
1e49f22f | 724 | |
3e3f8bd6 JK |
725 | progress = start_progress(_("Checking objects"), total); |
726 | } | |
1e49f22f | 727 | for (p = packed_git; p; p = p->next) { |
3e3f8bd6 JK |
728 | /* verify gives error messages itself */ |
729 | if (verify_pack(p, fsck_obj_buffer, | |
730 | progress, count)) | |
731 | errors_found |= ERROR_PACK; | |
732 | count += p->num_objects; | |
1e49f22f | 733 | } |
3e3f8bd6 | 734 | stop_progress(&progress); |
1e49f22f | 735 | } |
bcee6fd8 LT |
736 | } |
737 | ||
738 | heads = 0; | |
3aed2fda | 739 | for (i = 0; i < argc; i++) { |
a6080a0a | 740 | const char *arg = argv[i]; |
469e2ebf JH |
741 | unsigned char sha1[20]; |
742 | if (!get_sha1(arg, sha1)) { | |
743 | struct object *obj = lookup_object(sha1); | |
e1a1388d | 744 | |
c2d17b3b | 745 | if (!obj || !(obj->flags & HAS_OBJ)) { |
c6c7b16d JK |
746 | error("%s: object missing", sha1_to_hex(sha1)); |
747 | errors_found |= ERROR_OBJECT; | |
e1a1388d | 748 | continue; |
c6c7b16d | 749 | } |
e1a1388d | 750 | |
ff5ebe39 | 751 | obj->used = 1; |
90cf590f JS |
752 | if (name_objects) |
753 | add_decoration(fsck_walk_options.object_names, | |
754 | obj, xstrdup(arg)); | |
271b8d25 | 755 | mark_object_reachable(obj); |
bcee6fd8 | 756 | heads++; |
d9839e03 LT |
757 | continue; |
758 | } | |
f1f0d088 | 759 | error("invalid parameter: expected sha1, got '%s'", arg); |
c6c7b16d | 760 | errors_found |= ERROR_OBJECT; |
d9839e03 | 761 | } |
d9839e03 | 762 | |
1024932f | 763 | /* |
d1af002d | 764 | * If we've not been given any explicit head information, do the |
e7bd907d LT |
765 | * default ones from .git/refs. We also consider the index file |
766 | * in this case (ie this implies --cache). | |
1024932f | 767 | */ |
c3271a0e | 768 | if (!argc) { |
1024932f LT |
769 | get_default_heads(); |
770 | keep_cache_objects = 1; | |
771 | } | |
772 | ||
ae7c0c92 | 773 | if (keep_cache_objects) { |
a33fc72f | 774 | verify_index_checksum = 1; |
ae7c0c92 JH |
775 | read_cache(); |
776 | for (i = 0; i < active_nr; i++) { | |
8d9721c8 LT |
777 | unsigned int mode; |
778 | struct blob *blob; | |
ae7c0c92 | 779 | struct object *obj; |
8d9721c8 | 780 | |
7a51ed66 | 781 | mode = active_cache[i]->ce_mode; |
302b9282 | 782 | if (S_ISGITLINK(mode)) |
8d9721c8 | 783 | continue; |
3aca1fc6 | 784 | blob = lookup_blob(&active_cache[i]->oid); |
ae7c0c92 JH |
785 | if (!blob) |
786 | continue; | |
787 | obj = &blob->object; | |
788 | obj->used = 1; | |
90cf590f JS |
789 | if (name_objects) |
790 | add_decoration(fsck_walk_options.object_names, | |
791 | obj, | |
792 | xstrfmt(":%s", active_cache[i]->name)); | |
271b8d25 | 793 | mark_object_reachable(obj); |
ae7c0c92 | 794 | } |
53dc3f3e JH |
795 | if (active_cache_tree) |
796 | fsck_cache_tree(active_cache_tree); | |
ae7c0c92 JH |
797 | } |
798 | ||
8ba0bbb2 | 799 | check_connectivity(); |
e2b4f635 | 800 | return errors_found; |
20222118 | 801 | } |