Commit | Line | Data |
---|---|---|
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; |
96f1e58f DR |
26 | static int check_strict; |
27 | static int keep_cache_objects; | |
d9839e03 | 28 | static unsigned char head_sha1[20]; |
469e2ebf | 29 | static const char *head_points_at; |
e2b4f635 | 30 | static int errors_found; |
68f6c019 | 31 | static int write_lost_and_found; |
20f1eb6b | 32 | static int verbose; |
1e49f22f | 33 | static int show_progress = -1; |
c6a13b2c | 34 | static int show_dangling = 1; |
e2b4f635 JH |
35 | #define ERROR_OBJECT 01 |
36 | #define ERROR_REACHABLE 02 | |
a3ed7552 | 37 | #define ERROR_PACK 04 |
d9839e03 | 38 | |
962554c6 | 39 | #ifdef NO_D_INO_IN_DIRENT |
35a730f0 JH |
40 | #define SORT_DIRENT 0 |
41 | #define DIRENT_SORT_HINT(de) 0 | |
42 | #else | |
43 | #define SORT_DIRENT 1 | |
44 | #define DIRENT_SORT_HINT(de) ((de)->d_ino) | |
45 | #endif | |
f1f0d088 PB |
46 | |
47 | static void objreport(struct object *obj, const char *severity, | |
48 | const char *err, va_list params) | |
49 | { | |
50 | fprintf(stderr, "%s in %s %s: ", | |
885a86ab | 51 | severity, typename(obj->type), sha1_to_hex(obj->sha1)); |
f1f0d088 PB |
52 | vfprintf(stderr, err, params); |
53 | fputs("\n", stderr); | |
54 | } | |
55 | ||
28bea9e5 | 56 | __attribute__((format (printf, 2, 3))) |
a7928f8e | 57 | static int objerror(struct object *obj, const char *err, ...) |
f1f0d088 PB |
58 | { |
59 | va_list params; | |
60 | va_start(params, err); | |
e2b4f635 | 61 | errors_found |= ERROR_OBJECT; |
f1f0d088 PB |
62 | objreport(obj, "error", err, params); |
63 | va_end(params); | |
64 | return -1; | |
65 | } | |
66 | ||
28bea9e5 | 67 | __attribute__((format (printf, 3, 4))) |
ba002f3b | 68 | static int fsck_error_func(struct object *obj, int type, const char *err, ...) |
f1f0d088 PB |
69 | { |
70 | va_list params; | |
71 | va_start(params, err); | |
ba002f3b | 72 | objreport(obj, (type == FSCK_WARN) ? "warning" : "error", err, params); |
f1f0d088 | 73 | va_end(params); |
ba002f3b | 74 | return (type == FSCK_WARN) ? 0 : 1; |
f1f0d088 PB |
75 | } |
76 | ||
04d39759 LT |
77 | static struct object_array pending; |
78 | ||
271b8d25 MK |
79 | static int mark_object(struct object *obj, int type, void *data) |
80 | { | |
271b8d25 | 81 | struct object *parent = data; |
271b8d25 | 82 | |
a1cdc251 JH |
83 | /* |
84 | * The only case data is NULL or type is OBJ_ANY is when | |
85 | * mark_object_reachable() calls us. All the callers of | |
86 | * that function has non-NULL obj hence ... | |
87 | */ | |
271b8d25 | 88 | if (!obj) { |
a1cdc251 | 89 | /* ... these references to parent->fld are safe here */ |
271b8d25 MK |
90 | printf("broken link from %7s %s\n", |
91 | typename(parent->type), sha1_to_hex(parent->sha1)); | |
92 | printf("broken link from %7s %s\n", | |
93 | (type == OBJ_ANY ? "unknown" : typename(type)), "unknown"); | |
94 | errors_found |= ERROR_REACHABLE; | |
95 | return 1; | |
96 | } | |
97 | ||
98 | if (type != OBJ_ANY && obj->type != type) | |
a1cdc251 | 99 | /* ... and the reference to parent is safe here */ |
271b8d25 MK |
100 | objerror(parent, "wrong object type in link"); |
101 | ||
102 | if (obj->flags & REACHABLE) | |
103 | return 0; | |
104 | obj->flags |= REACHABLE; | |
6e454b9a | 105 | if (!(obj->flags & HAS_OBJ)) { |
271b8d25 MK |
106 | if (parent && !has_sha1_file(obj->sha1)) { |
107 | printf("broken link from %7s %s\n", | |
108 | typename(parent->type), sha1_to_hex(parent->sha1)); | |
109 | printf(" to %7s %s\n", | |
110 | typename(obj->type), sha1_to_hex(obj->sha1)); | |
111 | errors_found |= ERROR_REACHABLE; | |
112 | } | |
113 | return 1; | |
114 | } | |
115 | ||
16aa3bfc | 116 | add_object_array(obj, NULL, &pending); |
04d39759 LT |
117 | return 0; |
118 | } | |
119 | ||
120 | static void mark_object_reachable(struct object *obj) | |
121 | { | |
2af202be | 122 | mark_object(obj, OBJ_ANY, NULL); |
04d39759 LT |
123 | } |
124 | ||
a1cdc251 | 125 | static int traverse_one_object(struct object *obj) |
04d39759 LT |
126 | { |
127 | int result; | |
128 | struct tree *tree = NULL; | |
129 | ||
271b8d25 | 130 | if (obj->type == OBJ_TREE) { |
271b8d25 MK |
131 | tree = (struct tree *)obj; |
132 | if (parse_tree(tree) < 0) | |
133 | return 1; /* error already displayed */ | |
134 | } | |
135 | result = fsck_walk(obj, mark_object, obj); | |
6e454b9a JK |
136 | if (tree) |
137 | free_tree_buffer(tree); | |
271b8d25 MK |
138 | return result; |
139 | } | |
140 | ||
04d39759 | 141 | static int traverse_reachable(void) |
271b8d25 | 142 | { |
1e49f22f NTND |
143 | struct progress *progress = NULL; |
144 | unsigned int nr = 0; | |
04d39759 | 145 | int result = 0; |
1e49f22f | 146 | if (show_progress) |
754dbc43 | 147 | progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2); |
04d39759 LT |
148 | while (pending.nr) { |
149 | struct object_array_entry *entry; | |
c0aa335c | 150 | struct object *obj; |
04d39759 LT |
151 | |
152 | entry = pending.objects + --pending.nr; | |
153 | obj = entry->item; | |
a1cdc251 | 154 | result |= traverse_one_object(obj); |
1e49f22f | 155 | display_progress(progress, ++nr); |
04d39759 | 156 | } |
1e49f22f | 157 | stop_progress(&progress); |
04d39759 | 158 | return !!result; |
271b8d25 MK |
159 | } |
160 | ||
161 | static int mark_used(struct object *obj, int type, void *data) | |
162 | { | |
163 | if (!obj) | |
164 | return 1; | |
165 | obj->used = 1; | |
166 | return 0; | |
f1f0d088 PB |
167 | } |
168 | ||
18af29f2 LT |
169 | /* |
170 | * Check a single reachable object | |
171 | */ | |
172 | static void check_reachable_object(struct object *obj) | |
173 | { | |
18af29f2 LT |
174 | /* |
175 | * We obviously want the object to be parsed, | |
176 | * except if it was in a pack-file and we didn't | |
177 | * do a full fsck | |
178 | */ | |
6e454b9a | 179 | if (!(obj->flags & HAS_OBJ)) { |
cd673c1f | 180 | if (has_sha1_pack(obj->sha1)) |
18af29f2 LT |
181 | return; /* it is in pack - forget about it */ |
182 | printf("missing %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1)); | |
e2b4f635 | 183 | errors_found |= ERROR_REACHABLE; |
18af29f2 LT |
184 | return; |
185 | } | |
18af29f2 LT |
186 | } |
187 | ||
188 | /* | |
189 | * Check a single unreachable object | |
190 | */ | |
191 | static void check_unreachable_object(struct object *obj) | |
192 | { | |
193 | /* | |
194 | * Missing unreachable object? Ignore it. It's not like | |
195 | * we miss it (since it can't be reached), nor do we want | |
196 | * to complain about it being unreachable (since it does | |
197 | * not exist). | |
198 | */ | |
199 | if (!obj->parsed) | |
200 | return; | |
201 | ||
202 | /* | |
203 | * Unreachable object that exists? Show it if asked to, | |
204 | * since this is something that is prunable. | |
205 | */ | |
206 | if (show_unreachable) { | |
207 | printf("unreachable %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1)); | |
208 | return; | |
209 | } | |
210 | ||
211 | /* | |
212 | * "!used" means that nothing at all points to it, including | |
3dff5379 | 213 | * other unreachable objects. In other words, it's the "tip" |
18af29f2 LT |
214 | * of some set of unreachable objects, usually a commit that |
215 | * got dropped. | |
216 | * | |
217 | * Such starting points are more interesting than some random | |
218 | * set of unreachable objects, so we show them even if the user | |
219 | * hasn't asked for _all_ unreachable objects. If you have | |
220 | * deleted a branch by mistake, this is a prime candidate to | |
221 | * start looking at, for example. | |
222 | */ | |
223 | if (!obj->used) { | |
c6a13b2c JH |
224 | if (show_dangling) |
225 | printf("dangling %s %s\n", typename(obj->type), | |
226 | sha1_to_hex(obj->sha1)); | |
68f6c019 JS |
227 | if (write_lost_and_found) { |
228 | char *filename = git_path("lost-found/%s/%s", | |
229 | obj->type == OBJ_COMMIT ? "commit" : "other", | |
230 | sha1_to_hex(obj->sha1)); | |
231 | FILE *f; | |
232 | ||
233 | if (safe_create_leading_directories(filename)) { | |
234 | error("Could not create lost-found"); | |
235 | return; | |
236 | } | |
237 | if (!(f = fopen(filename, "w"))) | |
0721c314 | 238 | die_errno("Could not open '%s'", filename); |
16a7fcfe | 239 | if (obj->type == OBJ_BLOB) { |
6f7f3beb | 240 | if (stream_blob_to_fd(fileno(f), obj->sha1, NULL, 1)) |
eb726f2d | 241 | die_errno("Could not write '%s'", filename); |
16a7fcfe JS |
242 | } else |
243 | fprintf(f, "%s\n", sha1_to_hex(obj->sha1)); | |
47d32af2 | 244 | if (fclose(f)) |
d824cbba TR |
245 | die_errno("Could not finish '%s'", |
246 | filename); | |
68f6c019 | 247 | } |
18af29f2 LT |
248 | return; |
249 | } | |
250 | ||
251 | /* | |
252 | * Otherwise? It's there, it's unreachable, and some other unreachable | |
253 | * object points to it. Ignore it - it's not interesting, and we showed | |
254 | * all the interesting cases above. | |
255 | */ | |
256 | } | |
257 | ||
258 | static void check_object(struct object *obj) | |
259 | { | |
20f1eb6b JS |
260 | if (verbose) |
261 | fprintf(stderr, "Checking %s\n", sha1_to_hex(obj->sha1)); | |
262 | ||
18af29f2 LT |
263 | if (obj->flags & REACHABLE) |
264 | check_reachable_object(obj); | |
265 | else | |
266 | check_unreachable_object(obj); | |
267 | } | |
f1f0d088 | 268 | |
8ba0bbb2 LT |
269 | static void check_connectivity(void) |
270 | { | |
fc046a75 | 271 | int i, max; |
8ba0bbb2 | 272 | |
04d39759 LT |
273 | /* Traverse the pending reachable objects */ |
274 | traverse_reachable(); | |
275 | ||
8ba0bbb2 | 276 | /* Look up all the requirements, warn about missing objects.. */ |
fc046a75 | 277 | max = get_max_object_index(); |
20f1eb6b JS |
278 | if (verbose) |
279 | fprintf(stderr, "Checking connectivity (%d objects)\n", max); | |
280 | ||
fc046a75 | 281 | for (i = 0; i < max; i++) { |
fc046a75 | 282 | struct object *obj = get_indexed_object(i); |
8ba0bbb2 | 283 | |
18af29f2 LT |
284 | if (obj) |
285 | check_object(obj); | |
8ba0bbb2 LT |
286 | } |
287 | } | |
288 | ||
c9486eb0 | 289 | static int fsck_obj(struct object *obj) |
85003492 | 290 | { |
ba002f3b | 291 | if (obj->flags & SEEN) |
85003492 | 292 | return 0; |
ba002f3b | 293 | obj->flags |= SEEN; |
85003492 | 294 | |
20f1eb6b | 295 | if (verbose) |
ba002f3b MK |
296 | fprintf(stderr, "Checking %s %s\n", |
297 | typename(obj->type), sha1_to_hex(obj->sha1)); | |
42ea9cb2 | 298 | |
2af202be | 299 | if (fsck_walk(obj, mark_used, NULL)) |
ba002f3b | 300 | objerror(obj, "broken links"); |
90a398bb | 301 | if (fsck_object(obj, NULL, 0, check_strict, fsck_error_func)) |
ba002f3b | 302 | return -1; |
85003492 | 303 | |
ba002f3b MK |
304 | if (obj->type == OBJ_TREE) { |
305 | struct tree *item = (struct tree *) obj; | |
85003492 | 306 | |
6e454b9a | 307 | free_tree_buffer(item); |
1ea34e36 | 308 | } |
1ea34e36 | 309 | |
ba002f3b MK |
310 | if (obj->type == OBJ_COMMIT) { |
311 | struct commit *commit = (struct commit *) obj; | |
de2eb7f6 | 312 | |
0fb370da | 313 | free_commit_buffer(commit); |
4728b861 | 314 | |
ba002f3b MK |
315 | if (!commit->parents && show_root) |
316 | printf("root %s\n", sha1_to_hex(commit->object.sha1)); | |
317 | } | |
92d4c85d | 318 | |
ba002f3b MK |
319 | if (obj->type == OBJ_TAG) { |
320 | struct tag *tag = (struct tag *) obj; | |
20f1eb6b | 321 | |
ba002f3b MK |
322 | if (show_tags && tag->tagged) { |
323 | printf("tagged %s %s", typename(tag->tagged->type), sha1_to_hex(tag->tagged->sha1)); | |
324 | printf(" (%s) in %s\n", tag->tag, sha1_to_hex(tag->object.sha1)); | |
325 | } | |
92d4c85d | 326 | } |
889262ea | 327 | |
ff5ebe39 | 328 | return 0; |
20222118 LT |
329 | } |
330 | ||
c9486eb0 NTND |
331 | static int fsck_sha1(const unsigned char *sha1) |
332 | { | |
333 | struct object *obj = parse_object(sha1); | |
334 | if (!obj) { | |
335 | errors_found |= ERROR_OBJECT; | |
336 | return error("%s: object corrupt or missing", | |
337 | sha1_to_hex(sha1)); | |
338 | } | |
6e454b9a | 339 | obj->flags |= HAS_OBJ; |
c9486eb0 NTND |
340 | return fsck_obj(obj); |
341 | } | |
342 | ||
343 | static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type, | |
344 | unsigned long size, void *buffer, int *eaten) | |
345 | { | |
346 | struct object *obj; | |
347 | obj = parse_object_buffer(sha1, type, size, buffer, eaten); | |
348 | if (!obj) { | |
349 | errors_found |= ERROR_OBJECT; | |
350 | return error("%s: object corrupt or missing", sha1_to_hex(sha1)); | |
351 | } | |
6e454b9a | 352 | obj->flags = HAS_OBJ; |
c9486eb0 NTND |
353 | return fsck_obj(obj); |
354 | } | |
355 | ||
7e8c174a LT |
356 | /* |
357 | * This is the sorting chunk size: make it reasonably | |
358 | * big so that we can sort well.. | |
359 | */ | |
360 | #define MAX_SHA1_ENTRIES (1024) | |
361 | ||
362 | struct sha1_entry { | |
363 | unsigned long ino; | |
20222118 | 364 | unsigned char sha1[20]; |
7e8c174a LT |
365 | }; |
366 | ||
367 | static struct { | |
368 | unsigned long nr; | |
369 | struct sha1_entry *entry[MAX_SHA1_ENTRIES]; | |
370 | } sha1_list; | |
371 | ||
372 | static int ino_compare(const void *_a, const void *_b) | |
373 | { | |
374 | const struct sha1_entry *a = _a, *b = _b; | |
375 | unsigned long ino1 = a->ino, ino2 = b->ino; | |
376 | return ino1 < ino2 ? -1 : ino1 > ino2 ? 1 : 0; | |
377 | } | |
378 | ||
379 | static void fsck_sha1_list(void) | |
380 | { | |
381 | int i, nr = sha1_list.nr; | |
382 | ||
35a730f0 JH |
383 | if (SORT_DIRENT) |
384 | qsort(sha1_list.entry, nr, | |
385 | sizeof(struct sha1_entry *), ino_compare); | |
7e8c174a LT |
386 | for (i = 0; i < nr; i++) { |
387 | struct sha1_entry *entry = sha1_list.entry[i]; | |
388 | unsigned char *sha1 = entry->sha1; | |
389 | ||
390 | sha1_list.entry[i] = NULL; | |
2e770fe4 JK |
391 | if (fsck_sha1(sha1)) |
392 | errors_found |= ERROR_OBJECT; | |
7e8c174a | 393 | free(entry); |
20222118 | 394 | } |
7e8c174a LT |
395 | sha1_list.nr = 0; |
396 | } | |
397 | ||
398 | static void add_sha1_list(unsigned char *sha1, unsigned long ino) | |
399 | { | |
400 | struct sha1_entry *entry = xmalloc(sizeof(*entry)); | |
401 | int nr; | |
402 | ||
403 | entry->ino = ino; | |
e702496e | 404 | hashcpy(entry->sha1, sha1); |
7e8c174a LT |
405 | nr = sha1_list.nr; |
406 | if (nr == MAX_SHA1_ENTRIES) { | |
407 | fsck_sha1_list(); | |
408 | nr = 0; | |
409 | } | |
410 | sha1_list.entry[nr] = entry; | |
411 | sha1_list.nr = ++nr; | |
20222118 LT |
412 | } |
413 | ||
ea6f0a23 JH |
414 | static inline int is_loose_object_file(struct dirent *de, |
415 | char *name, unsigned char *sha1) | |
416 | { | |
417 | if (strlen(de->d_name) != 38) | |
418 | return 0; | |
419 | memcpy(name + 2, de->d_name, 39); | |
420 | return !get_sha1_hex(name, sha1); | |
421 | } | |
422 | ||
b5524c82 | 423 | static void fsck_dir(int i, char *path) |
20222118 LT |
424 | { |
425 | DIR *dir = opendir(path); | |
426 | struct dirent *de; | |
ea6f0a23 | 427 | char name[100]; |
20222118 | 428 | |
230f1322 | 429 | if (!dir) |
b5524c82 | 430 | return; |
20222118 | 431 | |
20f1eb6b JS |
432 | if (verbose) |
433 | fprintf(stderr, "Checking directory %s\n", path); | |
434 | ||
ea6f0a23 | 435 | sprintf(name, "%02x", i); |
20222118 | 436 | while ((de = readdir(dir)) != NULL) { |
7e8c174a | 437 | unsigned char sha1[20]; |
20222118 | 438 | |
8ca12c0d | 439 | if (is_dot_or_dotdot(de->d_name)) |
20222118 | 440 | continue; |
ea6f0a23 | 441 | if (is_loose_object_file(de, name, sha1)) { |
35a730f0 | 442 | add_sha1_list(sha1, DIRENT_SORT_HINT(de)); |
7e8c174a | 443 | continue; |
20222118 | 444 | } |
59556548 | 445 | if (starts_with(de->d_name, "tmp_obj_")) |
a08c53a1 | 446 | continue; |
20222118 LT |
447 | fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name); |
448 | } | |
449 | closedir(dir); | |
20222118 LT |
450 | } |
451 | ||
96f1e58f | 452 | static int default_refs; |
944d8589 | 453 | |
883d60fa JS |
454 | static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
455 | const char *email, unsigned long timestamp, int tz, | |
456 | const char *message, void *cb_data) | |
55dd5526 JH |
457 | { |
458 | struct object *obj; | |
459 | ||
20f1eb6b JS |
460 | if (verbose) |
461 | fprintf(stderr, "Checking reflog %s->%s\n", | |
462 | sha1_to_hex(osha1), sha1_to_hex(nsha1)); | |
463 | ||
55dd5526 JH |
464 | if (!is_null_sha1(osha1)) { |
465 | obj = lookup_object(osha1); | |
466 | if (obj) { | |
467 | obj->used = 1; | |
271b8d25 | 468 | mark_object_reachable(obj); |
55dd5526 JH |
469 | } |
470 | } | |
471 | obj = lookup_object(nsha1); | |
472 | if (obj) { | |
473 | obj->used = 1; | |
271b8d25 | 474 | mark_object_reachable(obj); |
55dd5526 JH |
475 | } |
476 | return 0; | |
477 | } | |
478 | ||
eb8381c8 NP |
479 | static int fsck_handle_reflog(const char *logname, const unsigned char *sha1, int flag, void *cb_data) |
480 | { | |
481 | for_each_reflog_ent(logname, fsck_handle_reflog_ent, NULL); | |
482 | return 0; | |
483 | } | |
484 | ||
8da19775 | 485 | static int fsck_handle_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
1024932f | 486 | { |
1024932f LT |
487 | struct object *obj; |
488 | ||
6232f62b | 489 | obj = parse_object(sha1); |
8a498a05 | 490 | if (!obj) { |
944d8589 | 491 | error("%s: invalid sha1 pointer %s", refname, sha1_to_hex(sha1)); |
30d1038d | 492 | errors_found |= ERROR_REACHABLE; |
944d8589 LT |
493 | /* We'll continue with the rest despite the error.. */ |
494 | return 0; | |
8a498a05 | 495 | } |
6232f62b LT |
496 | if (obj->type != OBJ_COMMIT && is_branch(refname)) |
497 | error("%s: not a commit", refname); | |
944d8589 | 498 | default_refs++; |
1024932f | 499 | obj->used = 1; |
271b8d25 | 500 | mark_object_reachable(obj); |
55dd5526 | 501 | |
7c4d07c7 | 502 | return 0; |
1024932f LT |
503 | } |
504 | ||
1024932f LT |
505 | static void get_default_heads(void) |
506 | { | |
469e2ebf JH |
507 | if (head_points_at && !is_null_sha1(head_sha1)) |
508 | fsck_handle_ref("HEAD", head_sha1, 0, NULL); | |
30d1038d | 509 | for_each_rawref(fsck_handle_ref, NULL); |
566842f6 SP |
510 | if (include_reflogs) |
511 | for_each_reflog(fsck_handle_reflog, NULL); | |
071fa89e LT |
512 | |
513 | /* | |
514 | * Not having any default heads isn't really fatal, but | |
515 | * it does mean that "--unreachable" no longer makes any | |
516 | * sense (since in this case everything will obviously | |
517 | * be unreachable by definition. | |
518 | * | |
519 | * Showing dangling objects is valid, though (as those | |
520 | * dangling objects are likely lost heads). | |
521 | * | |
522 | * So we just print a warning about it, and clear the | |
523 | * "show_unreachable" flag. | |
524 | */ | |
525 | if (!default_refs) { | |
8eb2d0be | 526 | fprintf(stderr, "notice: No default references\n"); |
071fa89e LT |
527 | show_unreachable = 0; |
528 | } | |
1024932f LT |
529 | } |
530 | ||
8a498a05 JH |
531 | static void fsck_object_dir(const char *path) |
532 | { | |
533 | int i; | |
1e49f22f | 534 | struct progress *progress = NULL; |
20f1eb6b JS |
535 | |
536 | if (verbose) | |
537 | fprintf(stderr, "Checking object directory\n"); | |
538 | ||
1e49f22f | 539 | if (show_progress) |
754dbc43 | 540 | progress = start_progress(_("Checking object directories"), 256); |
8a498a05 JH |
541 | for (i = 0; i < 256; i++) { |
542 | static char dir[4096]; | |
543 | sprintf(dir, "%s/%02x", path, i); | |
544 | fsck_dir(i, dir); | |
1e49f22f | 545 | display_progress(progress, i+1); |
8a498a05 | 546 | } |
1e49f22f | 547 | stop_progress(&progress); |
8a498a05 JH |
548 | fsck_sha1_list(); |
549 | } | |
550 | ||
c3330383 LT |
551 | static int fsck_head_link(void) |
552 | { | |
8da19775 | 553 | int flag; |
8eb2d0be | 554 | int null_is_error = 0; |
8eb2d0be | 555 | |
20f1eb6b JS |
556 | if (verbose) |
557 | fprintf(stderr, "Checking HEAD link\n"); | |
558 | ||
7695d118 | 559 | head_points_at = resolve_ref_unsafe("HEAD", 0, head_sha1, &flag); |
8eb2d0be JH |
560 | if (!head_points_at) |
561 | return error("Invalid HEAD"); | |
562 | if (!strcmp(head_points_at, "HEAD")) | |
563 | /* detached HEAD */ | |
564 | null_is_error = 1; | |
59556548 | 565 | else if (!starts_with(head_points_at, "refs/heads/")) |
8098a178 | 566 | return error("HEAD points to something strange (%s)", |
5b10b091 | 567 | head_points_at); |
469e2ebf | 568 | if (is_null_sha1(head_sha1)) { |
8eb2d0be JH |
569 | if (null_is_error) |
570 | return error("HEAD: detached HEAD points at nothing"); | |
571 | fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", | |
572 | head_points_at + 11); | |
573 | } | |
c3330383 LT |
574 | return 0; |
575 | } | |
576 | ||
53dc3f3e JH |
577 | static int fsck_cache_tree(struct cache_tree *it) |
578 | { | |
579 | int i; | |
580 | int err = 0; | |
581 | ||
20f1eb6b JS |
582 | if (verbose) |
583 | fprintf(stderr, "Checking cache tree\n"); | |
584 | ||
53dc3f3e JH |
585 | if (0 <= it->entry_count) { |
586 | struct object *obj = parse_object(it->sha1); | |
6d60bbef JH |
587 | if (!obj) { |
588 | error("%s: invalid sha1 pointer in cache-tree", | |
589 | sha1_to_hex(it->sha1)); | |
590 | return 1; | |
591 | } | |
cdc08b33 | 592 | obj->used = 1; |
a1cdc251 | 593 | mark_object_reachable(obj); |
1974632c | 594 | if (obj->type != OBJ_TREE) |
53dc3f3e JH |
595 | err |= objerror(obj, "non-tree in cache-tree"); |
596 | } | |
597 | for (i = 0; i < it->subtree_nr; i++) | |
598 | err |= fsck_cache_tree(it->down[i]->cache_tree); | |
599 | return err; | |
600 | } | |
601 | ||
5ac0a206 | 602 | static char const * const fsck_usage[] = { |
9c9b4f2f | 603 | N_("git fsck [<options>] [<object>...]"), |
5ac0a206 PH |
604 | NULL |
605 | }; | |
606 | ||
607 | static struct option fsck_opts[] = { | |
cf8fe315 | 608 | OPT__VERBOSE(&verbose, N_("be verbose")), |
d5d09d47 | 609 | OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")), |
cf8fe315 | 610 | OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")), |
d5d09d47 SB |
611 | OPT_BOOL(0, "tags", &show_tags, N_("report tags")), |
612 | OPT_BOOL(0, "root", &show_root, N_("report root nodes")), | |
613 | OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")), | |
614 | OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")), | |
615 | OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")), | |
616 | OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")), | |
617 | OPT_BOOL(0, "lost-found", &write_lost_and_found, | |
cf8fe315 NTND |
618 | N_("write dangling objects in .git/lost-found")), |
619 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), | |
5ac0a206 PH |
620 | OPT_END(), |
621 | }; | |
e2b4f635 | 622 | |
baffc0e7 | 623 | int cmd_fsck(int argc, const char **argv, const char *prefix) |
20222118 | 624 | { |
bcee6fd8 | 625 | int i, heads; |
e15ef669 | 626 | struct alternate_object_database *alt; |
20222118 | 627 | |
e2b4f635 | 628 | errors_found = 0; |
afc711b8 | 629 | check_replace_refs = 0; |
61e2b015 | 630 | |
37782920 | 631 | argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); |
1e49f22f NTND |
632 | |
633 | if (show_progress == -1) | |
634 | show_progress = isatty(2); | |
635 | if (verbose) | |
636 | show_progress = 0; | |
637 | ||
5ac0a206 PH |
638 | if (write_lost_and_found) { |
639 | check_full = 1; | |
640 | include_reflogs = 0; | |
889262ea LT |
641 | } |
642 | ||
c3330383 | 643 | fsck_head_link(); |
8a498a05 | 644 | fsck_object_dir(get_object_directory()); |
e15ef669 JH |
645 | |
646 | prepare_alt_odb(); | |
647 | for (alt = alt_odb_list; alt; alt = alt->next) { | |
648 | char namebuf[PATH_MAX]; | |
649 | int namelen = alt->name - alt->base; | |
650 | memcpy(namebuf, alt->base, namelen); | |
651 | namebuf[namelen - 1] = 0; | |
652 | fsck_object_dir(namebuf); | |
653 | } | |
654 | ||
8a498a05 | 655 | if (check_full) { |
8a498a05 | 656 | struct packed_git *p; |
1e49f22f NTND |
657 | uint32_t total = 0, count = 0; |
658 | struct progress *progress = NULL; | |
e15ef669 | 659 | |
8a498a05 | 660 | prepare_packed_git(); |
1e49f22f NTND |
661 | |
662 | if (show_progress) { | |
663 | for (p = packed_git; p; p = p->next) { | |
664 | if (open_pack_index(p)) | |
665 | continue; | |
666 | total += p->num_objects; | |
667 | } | |
668 | ||
754dbc43 | 669 | progress = start_progress(_("Checking objects"), total); |
1e49f22f NTND |
670 | } |
671 | for (p = packed_git; p; p = p->next) { | |
f9253394 | 672 | /* verify gives error messages itself */ |
1e49f22f NTND |
673 | if (verify_pack(p, fsck_obj_buffer, |
674 | progress, count)) | |
a3ed7552 | 675 | errors_found |= ERROR_PACK; |
1e49f22f NTND |
676 | count += p->num_objects; |
677 | } | |
678 | stop_progress(&progress); | |
bcee6fd8 LT |
679 | } |
680 | ||
681 | heads = 0; | |
3aed2fda | 682 | for (i = 0; i < argc; i++) { |
a6080a0a | 683 | const char *arg = argv[i]; |
469e2ebf JH |
684 | unsigned char sha1[20]; |
685 | if (!get_sha1(arg, sha1)) { | |
686 | struct object *obj = lookup_object(sha1); | |
e1a1388d | 687 | |
770896e5 LT |
688 | /* Error is printed by lookup_object(). */ |
689 | if (!obj) | |
e1a1388d JF |
690 | continue; |
691 | ||
ff5ebe39 | 692 | obj->used = 1; |
271b8d25 | 693 | mark_object_reachable(obj); |
bcee6fd8 | 694 | heads++; |
d9839e03 LT |
695 | continue; |
696 | } | |
f1f0d088 | 697 | error("invalid parameter: expected sha1, got '%s'", arg); |
d9839e03 | 698 | } |
d9839e03 | 699 | |
1024932f | 700 | /* |
d1af002d | 701 | * If we've not been given any explicit head information, do the |
e7bd907d LT |
702 | * default ones from .git/refs. We also consider the index file |
703 | * in this case (ie this implies --cache). | |
1024932f | 704 | */ |
e7bd907d | 705 | if (!heads) { |
1024932f LT |
706 | get_default_heads(); |
707 | keep_cache_objects = 1; | |
708 | } | |
709 | ||
ae7c0c92 | 710 | if (keep_cache_objects) { |
ae7c0c92 JH |
711 | read_cache(); |
712 | for (i = 0; i < active_nr; i++) { | |
8d9721c8 LT |
713 | unsigned int mode; |
714 | struct blob *blob; | |
ae7c0c92 | 715 | struct object *obj; |
8d9721c8 | 716 | |
7a51ed66 | 717 | mode = active_cache[i]->ce_mode; |
302b9282 | 718 | if (S_ISGITLINK(mode)) |
8d9721c8 LT |
719 | continue; |
720 | blob = lookup_blob(active_cache[i]->sha1); | |
ae7c0c92 JH |
721 | if (!blob) |
722 | continue; | |
723 | obj = &blob->object; | |
724 | obj->used = 1; | |
271b8d25 | 725 | mark_object_reachable(obj); |
ae7c0c92 | 726 | } |
53dc3f3e JH |
727 | if (active_cache_tree) |
728 | fsck_cache_tree(active_cache_tree); | |
ae7c0c92 JH |
729 | } |
730 | ||
8ba0bbb2 | 731 | check_connectivity(); |
e2b4f635 | 732 | return errors_found; |
20222118 | 733 | } |