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Commit | Line | Data |
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baffc0e7 | 1 | #include "builtin.h" |
4b182421 | 2 | #include "cache.h" |
ff5ebe39 DB |
3 | #include "commit.h" |
4 | #include "tree.h" | |
5 | #include "blob.h" | |
c418eda4 | 6 | #include "tag.h" |
944d8589 | 7 | #include "refs.h" |
f9253394 | 8 | #include "pack.h" |
53dc3f3e | 9 | #include "cache-tree.h" |
e9a95bef | 10 | #include "tree-walk.h" |
271b8d25 | 11 | #include "fsck.h" |
5ac0a206 | 12 | #include "parse-options.h" |
8ca12c0d | 13 | #include "dir.h" |
1e49f22f | 14 | #include "progress.h" |
6f7f3beb | 15 | #include "streaming.h" |
ff5ebe39 DB |
16 | |
17 | #define REACHABLE 0x0001 | |
2d9c58c6 | 18 | #define SEEN 0x0002 |
6e454b9a | 19 | #define HAS_OBJ 0x0004 |
d9839e03 | 20 | |
96f1e58f DR |
21 | static int show_root; |
22 | static int show_tags; | |
23 | static int show_unreachable; | |
566842f6 | 24 | static int include_reflogs = 1; |
f29cd393 | 25 | static int check_full = 1; |
02976bf8 | 26 | static int connectivity_only; |
96f1e58f DR |
27 | static int check_strict; |
28 | static int keep_cache_objects; | |
22410549 JS |
29 | static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT; |
30 | static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT; | |
635b99a0 | 31 | static struct object_id head_oid; |
469e2ebf | 32 | static const char *head_points_at; |
e2b4f635 | 33 | static int errors_found; |
68f6c019 | 34 | static int write_lost_and_found; |
20f1eb6b | 35 | static int verbose; |
1e49f22f | 36 | static int show_progress = -1; |
c6a13b2c | 37 | static int show_dangling = 1; |
e2b4f635 JH |
38 | #define ERROR_OBJECT 01 |
39 | #define ERROR_REACHABLE 02 | |
a3ed7552 | 40 | #define ERROR_PACK 04 |
d9839e03 | 41 | |
962554c6 | 42 | #ifdef NO_D_INO_IN_DIRENT |
35a730f0 JH |
43 | #define SORT_DIRENT 0 |
44 | #define DIRENT_SORT_HINT(de) 0 | |
45 | #else | |
46 | #define SORT_DIRENT 1 | |
47 | #define DIRENT_SORT_HINT(de) ((de)->d_ino) | |
48 | #endif | |
f1f0d088 | 49 | |
2becf00f JS |
50 | static int fsck_config(const char *var, const char *value, void *cb) |
51 | { | |
52 | if (skip_prefix(var, "fsck.", &var)) { | |
53 | fsck_set_msg_type(&fsck_obj_options, var, value); | |
54 | return 0; | |
55 | } | |
56 | ||
57 | return git_default_config(var, value, cb); | |
58 | } | |
59 | ||
c99ba492 JS |
60 | static void objreport(struct object *obj, const char *msg_type, |
61 | const char *err) | |
f1f0d088 | 62 | { |
c99ba492 JS |
63 | fprintf(stderr, "%s in %s %s: %s\n", |
64 | msg_type, typename(obj->type), sha1_to_hex(obj->sha1), err); | |
f1f0d088 PB |
65 | } |
66 | ||
c99ba492 | 67 | static int objerror(struct object *obj, const char *err) |
f1f0d088 | 68 | { |
e2b4f635 | 69 | errors_found |= ERROR_OBJECT; |
c99ba492 | 70 | objreport(obj, "error", err); |
f1f0d088 PB |
71 | return -1; |
72 | } | |
73 | ||
c99ba492 | 74 | static int fsck_error_func(struct object *obj, int type, const char *message) |
f1f0d088 | 75 | { |
c99ba492 | 76 | objreport(obj, (type == FSCK_WARN) ? "warning" : "error", message); |
ba002f3b | 77 | return (type == FSCK_WARN) ? 0 : 1; |
f1f0d088 PB |
78 | } |
79 | ||
04d39759 LT |
80 | static struct object_array pending; |
81 | ||
22410549 | 82 | static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 | 83 | { |
271b8d25 | 84 | struct object *parent = data; |
271b8d25 | 85 | |
a1cdc251 JH |
86 | /* |
87 | * The only case data is NULL or type is OBJ_ANY is when | |
88 | * mark_object_reachable() calls us. All the callers of | |
89 | * that function has non-NULL obj hence ... | |
90 | */ | |
271b8d25 | 91 | if (!obj) { |
a1cdc251 | 92 | /* ... these references to parent->fld are safe here */ |
271b8d25 MK |
93 | printf("broken link from %7s %s\n", |
94 | typename(parent->type), sha1_to_hex(parent->sha1)); | |
95 | printf("broken link from %7s %s\n", | |
96 | (type == OBJ_ANY ? "unknown" : typename(type)), "unknown"); | |
97 | errors_found |= ERROR_REACHABLE; | |
98 | return 1; | |
99 | } | |
100 | ||
101 | if (type != OBJ_ANY && obj->type != type) | |
a1cdc251 | 102 | /* ... and the reference to parent is safe here */ |
271b8d25 MK |
103 | objerror(parent, "wrong object type in link"); |
104 | ||
105 | if (obj->flags & REACHABLE) | |
106 | return 0; | |
107 | obj->flags |= REACHABLE; | |
6e454b9a | 108 | if (!(obj->flags & HAS_OBJ)) { |
271b8d25 MK |
109 | if (parent && !has_sha1_file(obj->sha1)) { |
110 | printf("broken link from %7s %s\n", | |
111 | typename(parent->type), sha1_to_hex(parent->sha1)); | |
112 | printf(" to %7s %s\n", | |
113 | typename(obj->type), sha1_to_hex(obj->sha1)); | |
114 | errors_found |= ERROR_REACHABLE; | |
115 | } | |
116 | return 1; | |
117 | } | |
118 | ||
16aa3bfc | 119 | add_object_array(obj, NULL, &pending); |
04d39759 LT |
120 | return 0; |
121 | } | |
122 | ||
123 | static void mark_object_reachable(struct object *obj) | |
124 | { | |
22410549 | 125 | mark_object(obj, OBJ_ANY, NULL, NULL); |
04d39759 LT |
126 | } |
127 | ||
a1cdc251 | 128 | static int traverse_one_object(struct object *obj) |
04d39759 LT |
129 | { |
130 | int result; | |
131 | struct tree *tree = NULL; | |
132 | ||
271b8d25 | 133 | if (obj->type == OBJ_TREE) { |
271b8d25 MK |
134 | tree = (struct tree *)obj; |
135 | if (parse_tree(tree) < 0) | |
136 | return 1; /* error already displayed */ | |
137 | } | |
22410549 | 138 | result = fsck_walk(obj, obj, &fsck_walk_options); |
6e454b9a JK |
139 | if (tree) |
140 | free_tree_buffer(tree); | |
271b8d25 MK |
141 | return result; |
142 | } | |
143 | ||
04d39759 | 144 | static int traverse_reachable(void) |
271b8d25 | 145 | { |
1e49f22f NTND |
146 | struct progress *progress = NULL; |
147 | unsigned int nr = 0; | |
04d39759 | 148 | int result = 0; |
1e49f22f | 149 | if (show_progress) |
754dbc43 | 150 | progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2); |
04d39759 LT |
151 | while (pending.nr) { |
152 | struct object_array_entry *entry; | |
c0aa335c | 153 | struct object *obj; |
04d39759 LT |
154 | |
155 | entry = pending.objects + --pending.nr; | |
156 | obj = entry->item; | |
a1cdc251 | 157 | result |= traverse_one_object(obj); |
1e49f22f | 158 | display_progress(progress, ++nr); |
04d39759 | 159 | } |
1e49f22f | 160 | stop_progress(&progress); |
04d39759 | 161 | return !!result; |
271b8d25 MK |
162 | } |
163 | ||
22410549 | 164 | static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 MK |
165 | { |
166 | if (!obj) | |
167 | return 1; | |
168 | obj->used = 1; | |
169 | return 0; | |
f1f0d088 PB |
170 | } |
171 | ||
18af29f2 LT |
172 | /* |
173 | * Check a single reachable object | |
174 | */ | |
175 | static void check_reachable_object(struct object *obj) | |
176 | { | |
18af29f2 LT |
177 | /* |
178 | * We obviously want the object to be parsed, | |
179 | * except if it was in a pack-file and we didn't | |
180 | * do a full fsck | |
181 | */ | |
6e454b9a | 182 | if (!(obj->flags & HAS_OBJ)) { |
cd673c1f | 183 | if (has_sha1_pack(obj->sha1)) |
18af29f2 | 184 | return; /* it is in pack - forget about it */ |
02976bf8 JS |
185 | if (connectivity_only && has_sha1_file(obj->sha1)) |
186 | return; | |
18af29f2 | 187 | printf("missing %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1)); |
e2b4f635 | 188 | errors_found |= ERROR_REACHABLE; |
18af29f2 LT |
189 | return; |
190 | } | |
18af29f2 LT |
191 | } |
192 | ||
193 | /* | |
194 | * Check a single unreachable object | |
195 | */ | |
196 | static void check_unreachable_object(struct object *obj) | |
197 | { | |
198 | /* | |
199 | * Missing unreachable object? Ignore it. It's not like | |
200 | * we miss it (since it can't be reached), nor do we want | |
201 | * to complain about it being unreachable (since it does | |
202 | * not exist). | |
203 | */ | |
204 | if (!obj->parsed) | |
205 | return; | |
206 | ||
207 | /* | |
208 | * Unreachable object that exists? Show it if asked to, | |
209 | * since this is something that is prunable. | |
210 | */ | |
211 | if (show_unreachable) { | |
212 | printf("unreachable %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1)); | |
213 | return; | |
214 | } | |
215 | ||
216 | /* | |
217 | * "!used" means that nothing at all points to it, including | |
3dff5379 | 218 | * other unreachable objects. In other words, it's the "tip" |
18af29f2 LT |
219 | * of some set of unreachable objects, usually a commit that |
220 | * got dropped. | |
221 | * | |
222 | * Such starting points are more interesting than some random | |
223 | * set of unreachable objects, so we show them even if the user | |
224 | * hasn't asked for _all_ unreachable objects. If you have | |
225 | * deleted a branch by mistake, this is a prime candidate to | |
226 | * start looking at, for example. | |
227 | */ | |
228 | if (!obj->used) { | |
c6a13b2c JH |
229 | if (show_dangling) |
230 | printf("dangling %s %s\n", typename(obj->type), | |
231 | sha1_to_hex(obj->sha1)); | |
68f6c019 | 232 | if (write_lost_and_found) { |
dcf69262 | 233 | const char *filename = git_path("lost-found/%s/%s", |
68f6c019 JS |
234 | obj->type == OBJ_COMMIT ? "commit" : "other", |
235 | sha1_to_hex(obj->sha1)); | |
236 | FILE *f; | |
237 | ||
dcf69262 | 238 | if (safe_create_leading_directories_const(filename)) { |
68f6c019 JS |
239 | error("Could not create lost-found"); |
240 | return; | |
241 | } | |
242 | if (!(f = fopen(filename, "w"))) | |
0721c314 | 243 | die_errno("Could not open '%s'", filename); |
16a7fcfe | 244 | if (obj->type == OBJ_BLOB) { |
6f7f3beb | 245 | if (stream_blob_to_fd(fileno(f), obj->sha1, NULL, 1)) |
eb726f2d | 246 | die_errno("Could not write '%s'", filename); |
16a7fcfe JS |
247 | } else |
248 | fprintf(f, "%s\n", sha1_to_hex(obj->sha1)); | |
47d32af2 | 249 | if (fclose(f)) |
d824cbba TR |
250 | die_errno("Could not finish '%s'", |
251 | filename); | |
68f6c019 | 252 | } |
18af29f2 LT |
253 | return; |
254 | } | |
255 | ||
256 | /* | |
257 | * Otherwise? It's there, it's unreachable, and some other unreachable | |
258 | * object points to it. Ignore it - it's not interesting, and we showed | |
259 | * all the interesting cases above. | |
260 | */ | |
261 | } | |
262 | ||
263 | static void check_object(struct object *obj) | |
264 | { | |
20f1eb6b JS |
265 | if (verbose) |
266 | fprintf(stderr, "Checking %s\n", sha1_to_hex(obj->sha1)); | |
267 | ||
18af29f2 LT |
268 | if (obj->flags & REACHABLE) |
269 | check_reachable_object(obj); | |
270 | else | |
271 | check_unreachable_object(obj); | |
272 | } | |
f1f0d088 | 273 | |
8ba0bbb2 LT |
274 | static void check_connectivity(void) |
275 | { | |
fc046a75 | 276 | int i, max; |
8ba0bbb2 | 277 | |
04d39759 LT |
278 | /* Traverse the pending reachable objects */ |
279 | traverse_reachable(); | |
280 | ||
8ba0bbb2 | 281 | /* Look up all the requirements, warn about missing objects.. */ |
fc046a75 | 282 | max = get_max_object_index(); |
20f1eb6b JS |
283 | if (verbose) |
284 | fprintf(stderr, "Checking connectivity (%d objects)\n", max); | |
285 | ||
fc046a75 | 286 | for (i = 0; i < max; i++) { |
fc046a75 | 287 | struct object *obj = get_indexed_object(i); |
8ba0bbb2 | 288 | |
18af29f2 LT |
289 | if (obj) |
290 | check_object(obj); | |
8ba0bbb2 LT |
291 | } |
292 | } | |
293 | ||
c9486eb0 | 294 | static int fsck_obj(struct object *obj) |
85003492 | 295 | { |
ba002f3b | 296 | if (obj->flags & SEEN) |
85003492 | 297 | return 0; |
ba002f3b | 298 | obj->flags |= SEEN; |
85003492 | 299 | |
20f1eb6b | 300 | if (verbose) |
ba002f3b MK |
301 | fprintf(stderr, "Checking %s %s\n", |
302 | typename(obj->type), sha1_to_hex(obj->sha1)); | |
42ea9cb2 | 303 | |
22410549 | 304 | if (fsck_walk(obj, NULL, &fsck_obj_options)) |
ba002f3b | 305 | objerror(obj, "broken links"); |
22410549 | 306 | if (fsck_object(obj, NULL, 0, &fsck_obj_options)) |
ba002f3b | 307 | return -1; |
85003492 | 308 | |
ba002f3b MK |
309 | if (obj->type == OBJ_TREE) { |
310 | struct tree *item = (struct tree *) obj; | |
85003492 | 311 | |
6e454b9a | 312 | free_tree_buffer(item); |
1ea34e36 | 313 | } |
1ea34e36 | 314 | |
ba002f3b MK |
315 | if (obj->type == OBJ_COMMIT) { |
316 | struct commit *commit = (struct commit *) obj; | |
de2eb7f6 | 317 | |
0fb370da | 318 | free_commit_buffer(commit); |
4728b861 | 319 | |
ba002f3b MK |
320 | if (!commit->parents && show_root) |
321 | printf("root %s\n", sha1_to_hex(commit->object.sha1)); | |
322 | } | |
92d4c85d | 323 | |
ba002f3b MK |
324 | if (obj->type == OBJ_TAG) { |
325 | struct tag *tag = (struct tag *) obj; | |
20f1eb6b | 326 | |
ba002f3b MK |
327 | if (show_tags && tag->tagged) { |
328 | printf("tagged %s %s", typename(tag->tagged->type), sha1_to_hex(tag->tagged->sha1)); | |
329 | printf(" (%s) in %s\n", tag->tag, sha1_to_hex(tag->object.sha1)); | |
330 | } | |
92d4c85d | 331 | } |
889262ea | 332 | |
ff5ebe39 | 333 | return 0; |
20222118 LT |
334 | } |
335 | ||
c9486eb0 NTND |
336 | static int fsck_sha1(const unsigned char *sha1) |
337 | { | |
338 | struct object *obj = parse_object(sha1); | |
339 | if (!obj) { | |
340 | errors_found |= ERROR_OBJECT; | |
341 | return error("%s: object corrupt or missing", | |
342 | sha1_to_hex(sha1)); | |
343 | } | |
6e454b9a | 344 | obj->flags |= HAS_OBJ; |
c9486eb0 NTND |
345 | return fsck_obj(obj); |
346 | } | |
347 | ||
348 | static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type, | |
349 | unsigned long size, void *buffer, int *eaten) | |
350 | { | |
351 | struct object *obj; | |
352 | obj = parse_object_buffer(sha1, type, size, buffer, eaten); | |
353 | if (!obj) { | |
354 | errors_found |= ERROR_OBJECT; | |
355 | return error("%s: object corrupt or missing", sha1_to_hex(sha1)); | |
356 | } | |
6e454b9a | 357 | obj->flags = HAS_OBJ; |
c9486eb0 NTND |
358 | return fsck_obj(obj); |
359 | } | |
360 | ||
7e8c174a LT |
361 | /* |
362 | * This is the sorting chunk size: make it reasonably | |
363 | * big so that we can sort well.. | |
364 | */ | |
365 | #define MAX_SHA1_ENTRIES (1024) | |
366 | ||
367 | struct sha1_entry { | |
368 | unsigned long ino; | |
20222118 | 369 | unsigned char sha1[20]; |
7e8c174a LT |
370 | }; |
371 | ||
372 | static struct { | |
373 | unsigned long nr; | |
374 | struct sha1_entry *entry[MAX_SHA1_ENTRIES]; | |
375 | } sha1_list; | |
376 | ||
377 | static int ino_compare(const void *_a, const void *_b) | |
378 | { | |
379 | const struct sha1_entry *a = _a, *b = _b; | |
380 | unsigned long ino1 = a->ino, ino2 = b->ino; | |
381 | return ino1 < ino2 ? -1 : ino1 > ino2 ? 1 : 0; | |
382 | } | |
383 | ||
384 | static void fsck_sha1_list(void) | |
385 | { | |
386 | int i, nr = sha1_list.nr; | |
387 | ||
35a730f0 JH |
388 | if (SORT_DIRENT) |
389 | qsort(sha1_list.entry, nr, | |
390 | sizeof(struct sha1_entry *), ino_compare); | |
7e8c174a LT |
391 | for (i = 0; i < nr; i++) { |
392 | struct sha1_entry *entry = sha1_list.entry[i]; | |
393 | unsigned char *sha1 = entry->sha1; | |
394 | ||
395 | sha1_list.entry[i] = NULL; | |
2e770fe4 JK |
396 | if (fsck_sha1(sha1)) |
397 | errors_found |= ERROR_OBJECT; | |
7e8c174a | 398 | free(entry); |
20222118 | 399 | } |
7e8c174a LT |
400 | sha1_list.nr = 0; |
401 | } | |
402 | ||
403 | static void add_sha1_list(unsigned char *sha1, unsigned long ino) | |
404 | { | |
405 | struct sha1_entry *entry = xmalloc(sizeof(*entry)); | |
406 | int nr; | |
407 | ||
408 | entry->ino = ino; | |
e702496e | 409 | hashcpy(entry->sha1, sha1); |
7e8c174a LT |
410 | nr = sha1_list.nr; |
411 | if (nr == MAX_SHA1_ENTRIES) { | |
412 | fsck_sha1_list(); | |
413 | nr = 0; | |
414 | } | |
415 | sha1_list.entry[nr] = entry; | |
416 | sha1_list.nr = ++nr; | |
20222118 LT |
417 | } |
418 | ||
ea6f0a23 JH |
419 | static inline int is_loose_object_file(struct dirent *de, |
420 | char *name, unsigned char *sha1) | |
421 | { | |
422 | if (strlen(de->d_name) != 38) | |
423 | return 0; | |
424 | memcpy(name + 2, de->d_name, 39); | |
425 | return !get_sha1_hex(name, sha1); | |
426 | } | |
427 | ||
b5524c82 | 428 | static void fsck_dir(int i, char *path) |
20222118 LT |
429 | { |
430 | DIR *dir = opendir(path); | |
431 | struct dirent *de; | |
ea6f0a23 | 432 | char name[100]; |
20222118 | 433 | |
230f1322 | 434 | if (!dir) |
b5524c82 | 435 | return; |
20222118 | 436 | |
20f1eb6b JS |
437 | if (verbose) |
438 | fprintf(stderr, "Checking directory %s\n", path); | |
439 | ||
ea6f0a23 | 440 | sprintf(name, "%02x", i); |
20222118 | 441 | while ((de = readdir(dir)) != NULL) { |
7e8c174a | 442 | unsigned char sha1[20]; |
20222118 | 443 | |
8ca12c0d | 444 | if (is_dot_or_dotdot(de->d_name)) |
20222118 | 445 | continue; |
ea6f0a23 | 446 | if (is_loose_object_file(de, name, sha1)) { |
35a730f0 | 447 | add_sha1_list(sha1, DIRENT_SORT_HINT(de)); |
7e8c174a | 448 | continue; |
20222118 | 449 | } |
59556548 | 450 | if (starts_with(de->d_name, "tmp_obj_")) |
a08c53a1 | 451 | continue; |
20222118 LT |
452 | fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name); |
453 | } | |
454 | closedir(dir); | |
20222118 LT |
455 | } |
456 | ||
96f1e58f | 457 | static int default_refs; |
944d8589 | 458 | |
883d60fa JS |
459 | static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
460 | const char *email, unsigned long timestamp, int tz, | |
461 | const char *message, void *cb_data) | |
55dd5526 JH |
462 | { |
463 | struct object *obj; | |
464 | ||
20f1eb6b JS |
465 | if (verbose) |
466 | fprintf(stderr, "Checking reflog %s->%s\n", | |
467 | sha1_to_hex(osha1), sha1_to_hex(nsha1)); | |
468 | ||
55dd5526 JH |
469 | if (!is_null_sha1(osha1)) { |
470 | obj = lookup_object(osha1); | |
471 | if (obj) { | |
472 | obj->used = 1; | |
271b8d25 | 473 | mark_object_reachable(obj); |
55dd5526 JH |
474 | } |
475 | } | |
476 | obj = lookup_object(nsha1); | |
477 | if (obj) { | |
478 | obj->used = 1; | |
271b8d25 | 479 | mark_object_reachable(obj); |
55dd5526 JH |
480 | } |
481 | return 0; | |
482 | } | |
483 | ||
635b99a0 MH |
484 | static int fsck_handle_reflog(const char *logname, const struct object_id *oid, |
485 | int flag, void *cb_data) | |
eb8381c8 NP |
486 | { |
487 | for_each_reflog_ent(logname, fsck_handle_reflog_ent, NULL); | |
488 | return 0; | |
489 | } | |
490 | ||
635b99a0 MH |
491 | static int fsck_handle_ref(const char *refname, const struct object_id *oid, |
492 | int flag, void *cb_data) | |
1024932f | 493 | { |
1024932f LT |
494 | struct object *obj; |
495 | ||
635b99a0 | 496 | obj = parse_object(oid->hash); |
8a498a05 | 497 | if (!obj) { |
635b99a0 | 498 | error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid)); |
30d1038d | 499 | errors_found |= ERROR_REACHABLE; |
944d8589 LT |
500 | /* We'll continue with the rest despite the error.. */ |
501 | return 0; | |
8a498a05 | 502 | } |
6232f62b LT |
503 | if (obj->type != OBJ_COMMIT && is_branch(refname)) |
504 | error("%s: not a commit", refname); | |
944d8589 | 505 | default_refs++; |
1024932f | 506 | obj->used = 1; |
271b8d25 | 507 | mark_object_reachable(obj); |
55dd5526 | 508 | |
7c4d07c7 | 509 | return 0; |
1024932f LT |
510 | } |
511 | ||
1024932f LT |
512 | static void get_default_heads(void) |
513 | { | |
635b99a0 MH |
514 | if (head_points_at && !is_null_oid(&head_oid)) |
515 | fsck_handle_ref("HEAD", &head_oid, 0, NULL); | |
516 | for_each_rawref(fsck_handle_ref, NULL); | |
566842f6 | 517 | if (include_reflogs) |
635b99a0 | 518 | for_each_reflog(fsck_handle_reflog, NULL); |
071fa89e LT |
519 | |
520 | /* | |
521 | * Not having any default heads isn't really fatal, but | |
522 | * it does mean that "--unreachable" no longer makes any | |
523 | * sense (since in this case everything will obviously | |
524 | * be unreachable by definition. | |
525 | * | |
526 | * Showing dangling objects is valid, though (as those | |
527 | * dangling objects are likely lost heads). | |
528 | * | |
529 | * So we just print a warning about it, and clear the | |
530 | * "show_unreachable" flag. | |
531 | */ | |
532 | if (!default_refs) { | |
8eb2d0be | 533 | fprintf(stderr, "notice: No default references\n"); |
071fa89e LT |
534 | show_unreachable = 0; |
535 | } | |
1024932f LT |
536 | } |
537 | ||
8a498a05 JH |
538 | static void fsck_object_dir(const char *path) |
539 | { | |
540 | int i; | |
1e49f22f | 541 | struct progress *progress = NULL; |
20f1eb6b JS |
542 | |
543 | if (verbose) | |
544 | fprintf(stderr, "Checking object directory\n"); | |
545 | ||
1e49f22f | 546 | if (show_progress) |
754dbc43 | 547 | progress = start_progress(_("Checking object directories"), 256); |
8a498a05 JH |
548 | for (i = 0; i < 256; i++) { |
549 | static char dir[4096]; | |
550 | sprintf(dir, "%s/%02x", path, i); | |
551 | fsck_dir(i, dir); | |
1e49f22f | 552 | display_progress(progress, i+1); |
8a498a05 | 553 | } |
1e49f22f | 554 | stop_progress(&progress); |
8a498a05 JH |
555 | fsck_sha1_list(); |
556 | } | |
557 | ||
c3330383 LT |
558 | static int fsck_head_link(void) |
559 | { | |
8da19775 | 560 | int flag; |
8eb2d0be | 561 | int null_is_error = 0; |
8eb2d0be | 562 | |
20f1eb6b JS |
563 | if (verbose) |
564 | fprintf(stderr, "Checking HEAD link\n"); | |
565 | ||
635b99a0 | 566 | head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid.hash, &flag); |
8eb2d0be JH |
567 | if (!head_points_at) |
568 | return error("Invalid HEAD"); | |
569 | if (!strcmp(head_points_at, "HEAD")) | |
570 | /* detached HEAD */ | |
571 | null_is_error = 1; | |
59556548 | 572 | else if (!starts_with(head_points_at, "refs/heads/")) |
8098a178 | 573 | return error("HEAD points to something strange (%s)", |
5b10b091 | 574 | head_points_at); |
635b99a0 | 575 | if (is_null_oid(&head_oid)) { |
8eb2d0be JH |
576 | if (null_is_error) |
577 | return error("HEAD: detached HEAD points at nothing"); | |
578 | fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", | |
579 | head_points_at + 11); | |
580 | } | |
c3330383 LT |
581 | return 0; |
582 | } | |
583 | ||
53dc3f3e JH |
584 | static int fsck_cache_tree(struct cache_tree *it) |
585 | { | |
586 | int i; | |
587 | int err = 0; | |
588 | ||
20f1eb6b JS |
589 | if (verbose) |
590 | fprintf(stderr, "Checking cache tree\n"); | |
591 | ||
53dc3f3e JH |
592 | if (0 <= it->entry_count) { |
593 | struct object *obj = parse_object(it->sha1); | |
6d60bbef JH |
594 | if (!obj) { |
595 | error("%s: invalid sha1 pointer in cache-tree", | |
596 | sha1_to_hex(it->sha1)); | |
597 | return 1; | |
598 | } | |
cdc08b33 | 599 | obj->used = 1; |
a1cdc251 | 600 | mark_object_reachable(obj); |
1974632c | 601 | if (obj->type != OBJ_TREE) |
53dc3f3e JH |
602 | err |= objerror(obj, "non-tree in cache-tree"); |
603 | } | |
604 | for (i = 0; i < it->subtree_nr; i++) | |
605 | err |= fsck_cache_tree(it->down[i]->cache_tree); | |
606 | return err; | |
607 | } | |
608 | ||
5ac0a206 | 609 | static char const * const fsck_usage[] = { |
9c9b4f2f | 610 | N_("git fsck [<options>] [<object>...]"), |
5ac0a206 PH |
611 | NULL |
612 | }; | |
613 | ||
614 | static struct option fsck_opts[] = { | |
cf8fe315 | 615 | OPT__VERBOSE(&verbose, N_("be verbose")), |
d5d09d47 | 616 | OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")), |
cf8fe315 | 617 | OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")), |
d5d09d47 SB |
618 | OPT_BOOL(0, "tags", &show_tags, N_("report tags")), |
619 | OPT_BOOL(0, "root", &show_root, N_("report root nodes")), | |
620 | OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")), | |
621 | OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")), | |
622 | OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")), | |
02976bf8 | 623 | OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")), |
d5d09d47 SB |
624 | OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")), |
625 | OPT_BOOL(0, "lost-found", &write_lost_and_found, | |
cf8fe315 NTND |
626 | N_("write dangling objects in .git/lost-found")), |
627 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), | |
5ac0a206 PH |
628 | OPT_END(), |
629 | }; | |
e2b4f635 | 630 | |
baffc0e7 | 631 | int cmd_fsck(int argc, const char **argv, const char *prefix) |
20222118 | 632 | { |
bcee6fd8 | 633 | int i, heads; |
e15ef669 | 634 | struct alternate_object_database *alt; |
20222118 | 635 | |
e2b4f635 | 636 | errors_found = 0; |
afc711b8 | 637 | check_replace_refs = 0; |
61e2b015 | 638 | |
37782920 | 639 | argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); |
1e49f22f | 640 | |
22410549 JS |
641 | fsck_walk_options.walk = mark_object; |
642 | fsck_obj_options.walk = mark_used; | |
643 | fsck_obj_options.error_func = fsck_error_func; | |
644 | if (check_strict) | |
645 | fsck_obj_options.strict = 1; | |
646 | ||
1e49f22f NTND |
647 | if (show_progress == -1) |
648 | show_progress = isatty(2); | |
649 | if (verbose) | |
650 | show_progress = 0; | |
651 | ||
5ac0a206 PH |
652 | if (write_lost_and_found) { |
653 | check_full = 1; | |
654 | include_reflogs = 0; | |
889262ea LT |
655 | } |
656 | ||
2becf00f JS |
657 | git_config(fsck_config, NULL); |
658 | ||
c3330383 | 659 | fsck_head_link(); |
02976bf8 JS |
660 | if (!connectivity_only) |
661 | fsck_object_dir(get_object_directory()); | |
e15ef669 JH |
662 | |
663 | prepare_alt_odb(); | |
664 | for (alt = alt_odb_list; alt; alt = alt->next) { | |
665 | char namebuf[PATH_MAX]; | |
666 | int namelen = alt->name - alt->base; | |
667 | memcpy(namebuf, alt->base, namelen); | |
668 | namebuf[namelen - 1] = 0; | |
669 | fsck_object_dir(namebuf); | |
670 | } | |
671 | ||
8a498a05 | 672 | if (check_full) { |
8a498a05 | 673 | struct packed_git *p; |
1e49f22f NTND |
674 | uint32_t total = 0, count = 0; |
675 | struct progress *progress = NULL; | |
e15ef669 | 676 | |
8a498a05 | 677 | prepare_packed_git(); |
1e49f22f NTND |
678 | |
679 | if (show_progress) { | |
680 | for (p = packed_git; p; p = p->next) { | |
681 | if (open_pack_index(p)) | |
682 | continue; | |
683 | total += p->num_objects; | |
684 | } | |
685 | ||
754dbc43 | 686 | progress = start_progress(_("Checking objects"), total); |
1e49f22f NTND |
687 | } |
688 | for (p = packed_git; p; p = p->next) { | |
f9253394 | 689 | /* verify gives error messages itself */ |
1e49f22f NTND |
690 | if (verify_pack(p, fsck_obj_buffer, |
691 | progress, count)) | |
a3ed7552 | 692 | errors_found |= ERROR_PACK; |
1e49f22f NTND |
693 | count += p->num_objects; |
694 | } | |
695 | stop_progress(&progress); | |
bcee6fd8 LT |
696 | } |
697 | ||
698 | heads = 0; | |
3aed2fda | 699 | for (i = 0; i < argc; i++) { |
a6080a0a | 700 | const char *arg = argv[i]; |
469e2ebf JH |
701 | unsigned char sha1[20]; |
702 | if (!get_sha1(arg, sha1)) { | |
703 | struct object *obj = lookup_object(sha1); | |
e1a1388d | 704 | |
770896e5 LT |
705 | /* Error is printed by lookup_object(). */ |
706 | if (!obj) | |
e1a1388d JF |
707 | continue; |
708 | ||
ff5ebe39 | 709 | obj->used = 1; |
271b8d25 | 710 | mark_object_reachable(obj); |
bcee6fd8 | 711 | heads++; |
d9839e03 LT |
712 | continue; |
713 | } | |
f1f0d088 | 714 | error("invalid parameter: expected sha1, got '%s'", arg); |
d9839e03 | 715 | } |
d9839e03 | 716 | |
1024932f | 717 | /* |
d1af002d | 718 | * If we've not been given any explicit head information, do the |
e7bd907d LT |
719 | * default ones from .git/refs. We also consider the index file |
720 | * in this case (ie this implies --cache). | |
1024932f | 721 | */ |
e7bd907d | 722 | if (!heads) { |
1024932f LT |
723 | get_default_heads(); |
724 | keep_cache_objects = 1; | |
725 | } | |
726 | ||
ae7c0c92 | 727 | if (keep_cache_objects) { |
ae7c0c92 JH |
728 | read_cache(); |
729 | for (i = 0; i < active_nr; i++) { | |
8d9721c8 LT |
730 | unsigned int mode; |
731 | struct blob *blob; | |
ae7c0c92 | 732 | struct object *obj; |
8d9721c8 | 733 | |
7a51ed66 | 734 | mode = active_cache[i]->ce_mode; |
302b9282 | 735 | if (S_ISGITLINK(mode)) |
8d9721c8 LT |
736 | continue; |
737 | blob = lookup_blob(active_cache[i]->sha1); | |
ae7c0c92 JH |
738 | if (!blob) |
739 | continue; | |
740 | obj = &blob->object; | |
741 | obj->used = 1; | |
271b8d25 | 742 | mark_object_reachable(obj); |
ae7c0c92 | 743 | } |
53dc3f3e JH |
744 | if (active_cache_tree) |
745 | fsck_cache_tree(active_cache_tree); | |
ae7c0c92 JH |
746 | } |
747 | ||
8ba0bbb2 | 748 | check_connectivity(); |
e2b4f635 | 749 | return errors_found; |
20222118 | 750 | } |