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Commit | Line | Data |
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baffc0e7 | 1 | #include "builtin.h" |
4b182421 | 2 | #include "cache.h" |
031dc927 | 3 | #include "repository.h" |
b2141fc1 | 4 | #include "config.h" |
ff5ebe39 DB |
5 | #include "commit.h" |
6 | #include "tree.h" | |
7 | #include "blob.h" | |
c418eda4 | 8 | #include "tag.h" |
944d8589 | 9 | #include "refs.h" |
f9253394 | 10 | #include "pack.h" |
53dc3f3e | 11 | #include "cache-tree.h" |
e9a95bef | 12 | #include "tree-walk.h" |
271b8d25 | 13 | #include "fsck.h" |
5ac0a206 | 14 | #include "parse-options.h" |
8ca12c0d | 15 | #include "dir.h" |
1e49f22f | 16 | #include "progress.h" |
6f7f3beb | 17 | #include "streaming.h" |
90cf590f | 18 | #include "decorate.h" |
0317f455 | 19 | #include "packfile.h" |
0d4a1321 | 20 | #include "object-store.h" |
ff5ebe39 DB |
21 | |
22 | #define REACHABLE 0x0001 | |
2d9c58c6 | 23 | #define SEEN 0x0002 |
6e454b9a | 24 | #define HAS_OBJ 0x0004 |
092c55d0 JT |
25 | /* This flag is set if something points to this object. */ |
26 | #define USED 0x0008 | |
d9839e03 | 27 | |
96f1e58f DR |
28 | static int show_root; |
29 | static int show_tags; | |
30 | static int show_unreachable; | |
566842f6 | 31 | static int include_reflogs = 1; |
f29cd393 | 32 | static int check_full = 1; |
02976bf8 | 33 | static int connectivity_only; |
96f1e58f DR |
34 | static int check_strict; |
35 | static int keep_cache_objects; | |
22410549 JS |
36 | static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT; |
37 | static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT; | |
635b99a0 | 38 | static struct object_id head_oid; |
469e2ebf | 39 | static const char *head_points_at; |
e2b4f635 | 40 | static int errors_found; |
68f6c019 | 41 | static int write_lost_and_found; |
20f1eb6b | 42 | static int verbose; |
1e49f22f | 43 | static int show_progress = -1; |
c6a13b2c | 44 | static int show_dangling = 1; |
90cf590f | 45 | static int name_objects; |
e2b4f635 JH |
46 | #define ERROR_OBJECT 01 |
47 | #define ERROR_REACHABLE 02 | |
a3ed7552 | 48 | #define ERROR_PACK 04 |
122f76f5 | 49 | #define ERROR_REFS 010 |
d9839e03 | 50 | |
993a21b0 JS |
51 | static const char *describe_object(struct object *obj) |
52 | { | |
90cf590f JS |
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; | |
993a21b0 JS |
63 | } |
64 | ||
97ca7ca8 JK |
65 | static const char *printable_type(struct object *obj) |
66 | { | |
67 | const char *ret; | |
68 | ||
a2b22854 | 69 | if (obj->type == OBJ_NONE) { |
abef9020 | 70 | enum object_type type = oid_object_info(&obj->oid, NULL); |
a2b22854 JK |
71 | if (type > 0) |
72 | object_as_type(obj, type, 0); | |
73 | } | |
74 | ||
debca9d2 | 75 | ret = type_name(obj->type); |
97ca7ca8 JK |
76 | if (!ret) |
77 | ret = "unknown"; | |
78 | ||
79 | return ret; | |
80 | } | |
81 | ||
2becf00f | 82 | static int fsck_config(const char *var, const char *value, void *cb) |
f1f0d088 | 83 | { |
1335f732 JS |
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 | ||
2becf00f JS |
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 | ||
c99ba492 JS |
105 | static void objreport(struct object *obj, const char *msg_type, |
106 | const char *err) | |
f1f0d088 | 107 | { |
c99ba492 | 108 | fprintf(stderr, "%s in %s %s: %s\n", |
97ca7ca8 | 109 | msg_type, printable_type(obj), describe_object(obj), err); |
f1f0d088 PB |
110 | } |
111 | ||
c99ba492 | 112 | static int objerror(struct object *obj, const char *err) |
f1f0d088 | 113 | { |
e2b4f635 | 114 | errors_found |= ERROR_OBJECT; |
c99ba492 | 115 | objreport(obj, "error", err); |
f1f0d088 PB |
116 | return -1; |
117 | } | |
118 | ||
1cd772cc JS |
119 | static int fsck_error_func(struct fsck_options *o, |
120 | struct object *obj, int type, const char *message) | |
f1f0d088 | 121 | { |
c99ba492 | 122 | objreport(obj, (type == FSCK_WARN) ? "warning" : "error", message); |
ba002f3b | 123 | return (type == FSCK_WARN) ? 0 : 1; |
f1f0d088 PB |
124 | } |
125 | ||
04d39759 LT |
126 | static struct object_array pending; |
127 | ||
22410549 | 128 | static int mark_object(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 | 129 | { |
271b8d25 | 130 | struct object *parent = data; |
271b8d25 | 131 | |
a1cdc251 JH |
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 | */ | |
271b8d25 | 137 | if (!obj) { |
a1cdc251 | 138 | /* ... these references to parent->fld are safe here */ |
271b8d25 | 139 | printf("broken link from %7s %s\n", |
97ca7ca8 | 140 | printable_type(parent), describe_object(parent)); |
271b8d25 | 141 | printf("broken link from %7s %s\n", |
debca9d2 | 142 | (type == OBJ_ANY ? "unknown" : type_name(type)), "unknown"); |
271b8d25 MK |
143 | errors_found |= ERROR_REACHABLE; |
144 | return 1; | |
145 | } | |
146 | ||
147 | if (type != OBJ_ANY && obj->type != type) | |
a1cdc251 | 148 | /* ... and the reference to parent is safe here */ |
271b8d25 MK |
149 | objerror(parent, "wrong object type in link"); |
150 | ||
151 | if (obj->flags & REACHABLE) | |
152 | return 0; | |
153 | obj->flags |= REACHABLE; | |
caba7fc3 JT |
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 | ||
6e454b9a | 163 | if (!(obj->flags & HAS_OBJ)) { |
f2fd0760 | 164 | if (parent && !has_object_file(&obj->oid)) { |
271b8d25 | 165 | printf("broken link from %7s %s\n", |
97ca7ca8 | 166 | printable_type(parent), describe_object(parent)); |
271b8d25 | 167 | printf(" to %7s %s\n", |
97ca7ca8 | 168 | printable_type(obj), describe_object(obj)); |
271b8d25 MK |
169 | errors_found |= ERROR_REACHABLE; |
170 | } | |
171 | return 1; | |
172 | } | |
173 | ||
16aa3bfc | 174 | add_object_array(obj, NULL, &pending); |
04d39759 LT |
175 | return 0; |
176 | } | |
177 | ||
178 | static void mark_object_reachable(struct object *obj) | |
179 | { | |
22410549 | 180 | mark_object(obj, OBJ_ANY, NULL, NULL); |
04d39759 LT |
181 | } |
182 | ||
a1cdc251 | 183 | static int traverse_one_object(struct object *obj) |
04d39759 | 184 | { |
ba3a08ca EW |
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; | |
271b8d25 MK |
192 | } |
193 | ||
04d39759 | 194 | static int traverse_reachable(void) |
271b8d25 | 195 | { |
1e49f22f NTND |
196 | struct progress *progress = NULL; |
197 | unsigned int nr = 0; | |
04d39759 | 198 | int result = 0; |
1e49f22f | 199 | if (show_progress) |
8aade107 | 200 | progress = start_delayed_progress(_("Checking connectivity"), 0); |
04d39759 | 201 | while (pending.nr) { |
71992039 | 202 | result |= traverse_one_object(object_array_pop(&pending)); |
1e49f22f | 203 | display_progress(progress, ++nr); |
04d39759 | 204 | } |
1e49f22f | 205 | stop_progress(&progress); |
04d39759 | 206 | return !!result; |
271b8d25 MK |
207 | } |
208 | ||
22410549 | 209 | static int mark_used(struct object *obj, int type, void *data, struct fsck_options *options) |
271b8d25 MK |
210 | { |
211 | if (!obj) | |
212 | return 1; | |
092c55d0 | 213 | obj->flags |= USED; |
271b8d25 | 214 | return 0; |
f1f0d088 PB |
215 | } |
216 | ||
18af29f2 LT |
217 | /* |
218 | * Check a single reachable object | |
219 | */ | |
220 | static void check_reachable_object(struct object *obj) | |
221 | { | |
18af29f2 LT |
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 | */ | |
6e454b9a | 227 | if (!(obj->flags & HAS_OBJ)) { |
caba7fc3 JT |
228 | if (is_promisor_object(&obj->oid)) |
229 | return; | |
14c3c80c | 230 | if (has_object_pack(&obj->oid)) |
18af29f2 | 231 | return; /* it is in pack - forget about it */ |
97ca7ca8 | 232 | printf("missing %s %s\n", printable_type(obj), |
993a21b0 | 233 | describe_object(obj)); |
e2b4f635 | 234 | errors_found |= ERROR_REACHABLE; |
18af29f2 LT |
235 | return; |
236 | } | |
18af29f2 LT |
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 | */ | |
b4584e4f | 250 | if (!(obj->flags & HAS_OBJ)) |
18af29f2 LT |
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) { | |
97ca7ca8 | 258 | printf("unreachable %s %s\n", printable_type(obj), |
993a21b0 | 259 | describe_object(obj)); |
18af29f2 LT |
260 | return; |
261 | } | |
262 | ||
263 | /* | |
092c55d0 | 264 | * "!USED" means that nothing at all points to it, including |
3dff5379 | 265 | * other unreachable objects. In other words, it's the "tip" |
18af29f2 LT |
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 | */ | |
092c55d0 | 275 | if (!(obj->flags & USED)) { |
c6a13b2c | 276 | if (show_dangling) |
97ca7ca8 | 277 | printf("dangling %s %s\n", printable_type(obj), |
993a21b0 | 278 | describe_object(obj)); |
68f6c019 | 279 | if (write_lost_and_found) { |
fcd12db6 | 280 | char *filename = git_pathdup("lost-found/%s/%s", |
68f6c019 | 281 | obj->type == OBJ_COMMIT ? "commit" : "other", |
993a21b0 | 282 | describe_object(obj)); |
68f6c019 JS |
283 | FILE *f; |
284 | ||
dcf69262 | 285 | if (safe_create_leading_directories_const(filename)) { |
68f6c019 | 286 | error("Could not create lost-found"); |
fcd12db6 | 287 | free(filename); |
68f6c019 JS |
288 | return; |
289 | } | |
23a9e071 | 290 | f = xfopen(filename, "w"); |
16a7fcfe | 291 | if (obj->type == OBJ_BLOB) { |
7eda0e4f | 292 | if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1)) |
eb726f2d | 293 | die_errno("Could not write '%s'", filename); |
16a7fcfe | 294 | } else |
993a21b0 | 295 | fprintf(f, "%s\n", describe_object(obj)); |
47d32af2 | 296 | if (fclose(f)) |
d824cbba TR |
297 | die_errno("Could not finish '%s'", |
298 | filename); | |
fcd12db6 | 299 | free(filename); |
68f6c019 | 300 | } |
18af29f2 LT |
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 | { | |
20f1eb6b | 313 | if (verbose) |
993a21b0 | 314 | fprintf(stderr, "Checking %s\n", describe_object(obj)); |
20f1eb6b | 315 | |
18af29f2 LT |
316 | if (obj->flags & REACHABLE) |
317 | check_reachable_object(obj); | |
318 | else | |
319 | check_unreachable_object(obj); | |
320 | } | |
f1f0d088 | 321 | |
8ba0bbb2 LT |
322 | static void check_connectivity(void) |
323 | { | |
fc046a75 | 324 | int i, max; |
8ba0bbb2 | 325 | |
04d39759 LT |
326 | /* Traverse the pending reachable objects */ |
327 | traverse_reachable(); | |
328 | ||
8ba0bbb2 | 329 | /* Look up all the requirements, warn about missing objects.. */ |
fc046a75 | 330 | max = get_max_object_index(); |
20f1eb6b JS |
331 | if (verbose) |
332 | fprintf(stderr, "Checking connectivity (%d objects)\n", max); | |
333 | ||
fc046a75 | 334 | for (i = 0; i < max; i++) { |
fc046a75 | 335 | struct object *obj = get_indexed_object(i); |
8ba0bbb2 | 336 | |
18af29f2 LT |
337 | if (obj) |
338 | check_object(obj); | |
8ba0bbb2 LT |
339 | } |
340 | } | |
341 | ||
c9486eb0 | 342 | static int fsck_obj(struct object *obj) |
85003492 | 343 | { |
83cd6f90 RS |
344 | int err; |
345 | ||
ba002f3b | 346 | if (obj->flags & SEEN) |
85003492 | 347 | return 0; |
ba002f3b | 348 | obj->flags |= SEEN; |
85003492 | 349 | |
20f1eb6b | 350 | if (verbose) |
ba002f3b | 351 | fprintf(stderr, "Checking %s %s\n", |
97ca7ca8 | 352 | printable_type(obj), describe_object(obj)); |
42ea9cb2 | 353 | |
22410549 | 354 | if (fsck_walk(obj, NULL, &fsck_obj_options)) |
ba002f3b | 355 | objerror(obj, "broken links"); |
83cd6f90 RS |
356 | err = fsck_object(obj, NULL, 0, &fsck_obj_options); |
357 | if (err) | |
358 | goto out; | |
1ea34e36 | 359 | |
ba002f3b MK |
360 | if (obj->type == OBJ_COMMIT) { |
361 | struct commit *commit = (struct commit *) obj; | |
de2eb7f6 | 362 | |
ba002f3b | 363 | if (!commit->parents && show_root) |
993a21b0 | 364 | printf("root %s\n", describe_object(&commit->object)); |
ba002f3b | 365 | } |
92d4c85d | 366 | |
ba002f3b MK |
367 | if (obj->type == OBJ_TAG) { |
368 | struct tag *tag = (struct tag *) obj; | |
20f1eb6b | 369 | |
ba002f3b | 370 | if (show_tags && tag->tagged) { |
97ca7ca8 | 371 | printf("tagged %s %s", printable_type(tag->tagged), |
993a21b0 JS |
372 | describe_object(tag->tagged)); |
373 | printf(" (%s) in %s\n", tag->tag, | |
374 | describe_object(&tag->object)); | |
ba002f3b | 375 | } |
92d4c85d | 376 | } |
889262ea | 377 | |
83cd6f90 RS |
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; | |
20222118 LT |
384 | } |
385 | ||
9fd75046 | 386 | static int fsck_obj_buffer(const struct object_id *oid, enum object_type type, |
c9486eb0 NTND |
387 | unsigned long size, void *buffer, int *eaten) |
388 | { | |
ec9d2249 NTND |
389 | /* |
390 | * Note, buffer may be NULL if type is OBJ_BLOB. See | |
391 | * verify_packfile(), data_valid variable for details. | |
392 | */ | |
c9486eb0 | 393 | struct object *obj; |
c251c83d | 394 | obj = parse_object_buffer(oid, type, size, buffer, eaten); |
c9486eb0 NTND |
395 | if (!obj) { |
396 | errors_found |= ERROR_OBJECT; | |
9fd75046 | 397 | return error("%s: object corrupt or missing", oid_to_hex(oid)); |
c9486eb0 | 398 | } |
092c55d0 JT |
399 | obj->flags &= ~(REACHABLE | SEEN); |
400 | obj->flags |= HAS_OBJ; | |
c9486eb0 NTND |
401 | return fsck_obj(obj); |
402 | } | |
403 | ||
96f1e58f | 404 | static int default_refs; |
944d8589 | 405 | |
9461d272 | 406 | static void fsck_handle_reflog_oid(const char *refname, struct object_id *oid, |
dddbad72 | 407 | timestamp_t timestamp) |
55dd5526 JH |
408 | { |
409 | struct object *obj; | |
410 | ||
9461d272 | 411 | if (!is_null_oid(oid)) { |
412 | obj = lookup_object(oid->hash); | |
c2d17b3b | 413 | if (obj && (obj->flags & HAS_OBJ)) { |
90cf590f JS |
414 | if (timestamp && name_objects) |
415 | add_decoration(fsck_walk_options.object_names, | |
416 | obj, | |
cb71f8bd | 417 | xstrfmt("%s@{%"PRItime"}", refname, timestamp)); |
092c55d0 | 418 | obj->flags |= USED; |
271b8d25 | 419 | mark_object_reachable(obj); |
498f1f61 | 420 | } else if (!is_promisor_object(oid)) { |
9461d272 | 421 | error("%s: invalid reflog entry %s", refname, oid_to_hex(oid)); |
19bf6c9b | 422 | errors_found |= ERROR_REACHABLE; |
55dd5526 JH |
423 | } |
424 | } | |
d66ae59b MH |
425 | } |
426 | ||
9461d272 | 427 | static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 428 | const char *email, timestamp_t timestamp, int tz, |
883d60fa | 429 | const char *message, void *cb_data) |
55dd5526 | 430 | { |
19bf6c9b | 431 | const char *refname = cb_data; |
55dd5526 | 432 | |
20f1eb6b JS |
433 | if (verbose) |
434 | fprintf(stderr, "Checking reflog %s->%s\n", | |
9461d272 | 435 | oid_to_hex(ooid), oid_to_hex(noid)); |
20f1eb6b | 436 | |
9461d272 | 437 | fsck_handle_reflog_oid(refname, ooid, 0); |
438 | fsck_handle_reflog_oid(refname, noid, timestamp); | |
55dd5526 JH |
439 | return 0; |
440 | } | |
441 | ||
635b99a0 MH |
442 | static int fsck_handle_reflog(const char *logname, const struct object_id *oid, |
443 | int flag, void *cb_data) | |
eb8381c8 | 444 | { |
19bf6c9b | 445 | for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname); |
eb8381c8 NP |
446 | return 0; |
447 | } | |
448 | ||
635b99a0 MH |
449 | static int fsck_handle_ref(const char *refname, const struct object_id *oid, |
450 | int flag, void *cb_data) | |
1024932f | 451 | { |
1024932f LT |
452 | struct object *obj; |
453 | ||
c251c83d | 454 | obj = parse_object(oid); |
8a498a05 | 455 | if (!obj) { |
43f25158 JT |
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 | } | |
635b99a0 | 464 | error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid)); |
30d1038d | 465 | errors_found |= ERROR_REACHABLE; |
944d8589 LT |
466 | /* We'll continue with the rest despite the error.. */ |
467 | return 0; | |
8a498a05 | 468 | } |
122f76f5 | 469 | if (obj->type != OBJ_COMMIT && is_branch(refname)) { |
6232f62b | 470 | error("%s: not a commit", refname); |
122f76f5 JH |
471 | errors_found |= ERROR_REFS; |
472 | } | |
944d8589 | 473 | default_refs++; |
092c55d0 | 474 | obj->flags |= USED; |
90cf590f JS |
475 | if (name_objects) |
476 | add_decoration(fsck_walk_options.object_names, | |
477 | obj, xstrdup(refname)); | |
271b8d25 | 478 | mark_object_reachable(obj); |
55dd5526 | 479 | |
7c4d07c7 | 480 | return 0; |
1024932f LT |
481 | } |
482 | ||
1024932f LT |
483 | static void get_default_heads(void) |
484 | { | |
635b99a0 MH |
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); | |
566842f6 | 488 | if (include_reflogs) |
635b99a0 | 489 | for_each_reflog(fsck_handle_reflog, NULL); |
071fa89e LT |
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) { | |
8eb2d0be | 504 | fprintf(stderr, "notice: No default references\n"); |
071fa89e LT |
505 | show_unreachable = 0; |
506 | } | |
1024932f LT |
507 | } |
508 | ||
76c1d9a0 | 509 | static struct object *parse_loose_object(const struct object_id *oid, |
c68b489e JK |
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 | ||
d61d87bd | 518 | if (read_loose_object(path, oid, &type, &size, &contents) < 0) |
c68b489e JK |
519 | return NULL; |
520 | ||
521 | if (!contents && type != OBJ_BLOB) | |
522 | die("BUG: read_loose_object streamed a non-blob"); | |
523 | ||
c251c83d | 524 | obj = parse_object_buffer(oid, type, size, contents, &eaten); |
c68b489e JK |
525 | |
526 | if (!eaten) | |
527 | free(contents); | |
528 | return obj; | |
529 | } | |
530 | ||
76c1d9a0 | 531 | static int fsck_loose(const struct object_id *oid, const char *path, void *data) |
f0766bf9 | 532 | { |
76c1d9a0 | 533 | struct object *obj = parse_loose_object(oid, path); |
c68b489e JK |
534 | |
535 | if (!obj) { | |
536 | errors_found |= ERROR_OBJECT; | |
537 | error("%s: object corrupt or missing: %s", | |
76c1d9a0 | 538 | oid_to_hex(oid), path); |
c68b489e JK |
539 | return 0; /* keep checking other objects */ |
540 | } | |
541 | ||
092c55d0 JT |
542 | obj->flags &= ~(REACHABLE | SEEN); |
543 | obj->flags |= HAS_OBJ; | |
c68b489e | 544 | if (fsck_obj(obj)) |
f0766bf9 JK |
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 | ||
70c49050 | 556 | static int fsck_subdir(unsigned int nr, const char *path, void *progress) |
f0766bf9 JK |
557 | { |
558 | display_progress(progress, nr + 1); | |
559 | return 0; | |
560 | } | |
561 | ||
8a498a05 JH |
562 | static void fsck_object_dir(const char *path) |
563 | { | |
1e49f22f | 564 | struct progress *progress = NULL; |
20f1eb6b JS |
565 | |
566 | if (verbose) | |
567 | fprintf(stderr, "Checking object directory\n"); | |
568 | ||
1e49f22f | 569 | if (show_progress) |
754dbc43 | 570 | progress = start_progress(_("Checking object directories"), 256); |
f0766bf9 JK |
571 | |
572 | for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir, | |
573 | progress); | |
574 | display_progress(progress, 256); | |
1e49f22f | 575 | stop_progress(&progress); |
8a498a05 JH |
576 | } |
577 | ||
c3330383 LT |
578 | static int fsck_head_link(void) |
579 | { | |
8eb2d0be | 580 | int null_is_error = 0; |
8eb2d0be | 581 | |
20f1eb6b JS |
582 | if (verbose) |
583 | fprintf(stderr, "Checking HEAD link\n"); | |
584 | ||
49e61479 | 585 | head_points_at = resolve_ref_unsafe("HEAD", 0, &head_oid, NULL); |
122f76f5 JH |
586 | if (!head_points_at) { |
587 | errors_found |= ERROR_REFS; | |
8eb2d0be | 588 | return error("Invalid HEAD"); |
122f76f5 | 589 | } |
8eb2d0be JH |
590 | if (!strcmp(head_points_at, "HEAD")) |
591 | /* detached HEAD */ | |
592 | null_is_error = 1; | |
122f76f5 JH |
593 | else if (!starts_with(head_points_at, "refs/heads/")) { |
594 | errors_found |= ERROR_REFS; | |
8098a178 | 595 | return error("HEAD points to something strange (%s)", |
5b10b091 | 596 | head_points_at); |
122f76f5 | 597 | } |
635b99a0 | 598 | if (is_null_oid(&head_oid)) { |
122f76f5 JH |
599 | if (null_is_error) { |
600 | errors_found |= ERROR_REFS; | |
8eb2d0be | 601 | return error("HEAD: detached HEAD points at nothing"); |
122f76f5 | 602 | } |
8eb2d0be JH |
603 | fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", |
604 | head_points_at + 11); | |
605 | } | |
c3330383 LT |
606 | return 0; |
607 | } | |
608 | ||
53dc3f3e JH |
609 | static int fsck_cache_tree(struct cache_tree *it) |
610 | { | |
611 | int i; | |
612 | int err = 0; | |
613 | ||
20f1eb6b JS |
614 | if (verbose) |
615 | fprintf(stderr, "Checking cache tree\n"); | |
616 | ||
53dc3f3e | 617 | if (0 <= it->entry_count) { |
c251c83d | 618 | struct object *obj = parse_object(&it->oid); |
6d60bbef JH |
619 | if (!obj) { |
620 | error("%s: invalid sha1 pointer in cache-tree", | |
e0a92804 | 621 | oid_to_hex(&it->oid)); |
122f76f5 | 622 | errors_found |= ERROR_REFS; |
6d60bbef JH |
623 | return 1; |
624 | } | |
092c55d0 | 625 | obj->flags |= USED; |
90cf590f JS |
626 | if (name_objects) |
627 | add_decoration(fsck_walk_options.object_names, | |
628 | obj, xstrdup(":")); | |
a1cdc251 | 629 | mark_object_reachable(obj); |
1974632c | 630 | if (obj->type != OBJ_TREE) |
53dc3f3e JH |
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 | ||
76c1d9a0 | 638 | static void mark_object_for_connectivity(const struct object_id *oid) |
3e3f8bd6 | 639 | { |
76c1d9a0 | 640 | struct object *obj = lookup_unknown_object(oid->hash); |
3e3f8bd6 JK |
641 | obj->flags |= HAS_OBJ; |
642 | } | |
643 | ||
76c1d9a0 | 644 | static int mark_loose_for_connectivity(const struct object_id *oid, |
3e3f8bd6 JK |
645 | const char *path, |
646 | void *data) | |
647 | { | |
76c1d9a0 | 648 | mark_object_for_connectivity(oid); |
3e3f8bd6 JK |
649 | return 0; |
650 | } | |
651 | ||
76c1d9a0 | 652 | static int mark_packed_for_connectivity(const struct object_id *oid, |
3e3f8bd6 JK |
653 | struct packed_git *pack, |
654 | uint32_t pos, | |
655 | void *data) | |
656 | { | |
76c1d9a0 | 657 | mark_object_for_connectivity(oid); |
3e3f8bd6 JK |
658 | return 0; |
659 | } | |
660 | ||
5ac0a206 | 661 | static char const * const fsck_usage[] = { |
9c9b4f2f | 662 | N_("git fsck [<options>] [<object>...]"), |
5ac0a206 PH |
663 | NULL |
664 | }; | |
665 | ||
666 | static struct option fsck_opts[] = { | |
cf8fe315 | 667 | OPT__VERBOSE(&verbose, N_("be verbose")), |
d5d09d47 | 668 | OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")), |
cf8fe315 | 669 | OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")), |
d5d09d47 SB |
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")), | |
02976bf8 | 675 | OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")), |
d5d09d47 SB |
676 | OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")), |
677 | OPT_BOOL(0, "lost-found", &write_lost_and_found, | |
cf8fe315 NTND |
678 | N_("write dangling objects in .git/lost-found")), |
679 | OPT_BOOL(0, "progress", &show_progress, N_("show progress")), | |
90cf590f | 680 | OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")), |
5ac0a206 PH |
681 | OPT_END(), |
682 | }; | |
e2b4f635 | 683 | |
baffc0e7 | 684 | int cmd_fsck(int argc, const char **argv, const char *prefix) |
20222118 | 685 | { |
78e7b98f | 686 | int i; |
e15ef669 | 687 | struct alternate_object_database *alt; |
20222118 | 688 | |
8b4c0103 JT |
689 | /* fsck knows how to handle missing promisor objects */ |
690 | fetch_if_missing = 0; | |
691 | ||
e2b4f635 | 692 | errors_found = 0; |
afc711b8 | 693 | check_replace_refs = 0; |
61e2b015 | 694 | |
37782920 | 695 | argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0); |
1e49f22f | 696 | |
22410549 JS |
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 | ||
1e49f22f NTND |
703 | if (show_progress == -1) |
704 | show_progress = isatty(2); | |
705 | if (verbose) | |
706 | show_progress = 0; | |
707 | ||
5ac0a206 PH |
708 | if (write_lost_and_found) { |
709 | check_full = 1; | |
710 | include_reflogs = 0; | |
889262ea LT |
711 | } |
712 | ||
90cf590f JS |
713 | if (name_objects) |
714 | fsck_walk_options.object_names = | |
715 | xcalloc(1, sizeof(struct decoration)); | |
716 | ||
2becf00f JS |
717 | git_config(fsck_config, NULL); |
718 | ||
c3330383 | 719 | fsck_head_link(); |
3e3f8bd6 JK |
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 { | |
031dc927 SB |
724 | struct alternate_object_database *alt_odb_list; |
725 | ||
02976bf8 | 726 | fsck_object_dir(get_object_directory()); |
e15ef669 | 727 | |
0b209034 | 728 | prepare_alt_odb(the_repository); |
031dc927 | 729 | alt_odb_list = the_repository->objects->alt_odb_list; |
597f9134 JK |
730 | for (alt = alt_odb_list; alt; alt = alt->next) |
731 | fsck_object_dir(alt->path); | |
e15ef669 | 732 | |
3e3f8bd6 JK |
733 | if (check_full) { |
734 | struct packed_git *p; | |
735 | uint32_t total = 0, count = 0; | |
736 | struct progress *progress = NULL; | |
e15ef669 | 737 | |
3e3f8bd6 | 738 | if (show_progress) { |
a80d72db SB |
739 | for (p = get_packed_git(the_repository); p; |
740 | p = p->next) { | |
3e3f8bd6 JK |
741 | if (open_pack_index(p)) |
742 | continue; | |
743 | total += p->num_objects; | |
744 | } | |
1e49f22f | 745 | |
3e3f8bd6 JK |
746 | progress = start_progress(_("Checking objects"), total); |
747 | } | |
a80d72db SB |
748 | for (p = get_packed_git(the_repository); p; |
749 | p = p->next) { | |
3e3f8bd6 JK |
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; | |
1e49f22f | 755 | } |
3e3f8bd6 | 756 | stop_progress(&progress); |
1e49f22f | 757 | } |
bcee6fd8 LT |
758 | } |
759 | ||
3aed2fda | 760 | for (i = 0; i < argc; i++) { |
a6080a0a | 761 | const char *arg = argv[i]; |
aca6065c | 762 | struct object_id oid; |
763 | if (!get_oid(arg, &oid)) { | |
764 | struct object *obj = lookup_object(oid.hash); | |
e1a1388d | 765 | |
c2d17b3b | 766 | if (!obj || !(obj->flags & HAS_OBJ)) { |
096c9b8b JT |
767 | if (is_promisor_object(&oid)) |
768 | continue; | |
aca6065c | 769 | error("%s: object missing", oid_to_hex(&oid)); |
c6c7b16d | 770 | errors_found |= ERROR_OBJECT; |
e1a1388d | 771 | continue; |
c6c7b16d | 772 | } |
e1a1388d | 773 | |
092c55d0 | 774 | obj->flags |= USED; |
90cf590f JS |
775 | if (name_objects) |
776 | add_decoration(fsck_walk_options.object_names, | |
777 | obj, xstrdup(arg)); | |
271b8d25 | 778 | mark_object_reachable(obj); |
d9839e03 LT |
779 | continue; |
780 | } | |
f1f0d088 | 781 | error("invalid parameter: expected sha1, got '%s'", arg); |
c6c7b16d | 782 | errors_found |= ERROR_OBJECT; |
d9839e03 | 783 | } |
d9839e03 | 784 | |
1024932f | 785 | /* |
d1af002d | 786 | * If we've not been given any explicit head information, do the |
e7bd907d LT |
787 | * default ones from .git/refs. We also consider the index file |
788 | * in this case (ie this implies --cache). | |
1024932f | 789 | */ |
c3271a0e | 790 | if (!argc) { |
1024932f LT |
791 | get_default_heads(); |
792 | keep_cache_objects = 1; | |
793 | } | |
794 | ||
ae7c0c92 | 795 | if (keep_cache_objects) { |
a33fc72f | 796 | verify_index_checksum = 1; |
00ec50e5 | 797 | verify_ce_order = 1; |
ae7c0c92 JH |
798 | read_cache(); |
799 | for (i = 0; i < active_nr; i++) { | |
8d9721c8 LT |
800 | unsigned int mode; |
801 | struct blob *blob; | |
ae7c0c92 | 802 | struct object *obj; |
8d9721c8 | 803 | |
7a51ed66 | 804 | mode = active_cache[i]->ce_mode; |
302b9282 | 805 | if (S_ISGITLINK(mode)) |
8d9721c8 | 806 | continue; |
3aca1fc6 | 807 | blob = lookup_blob(&active_cache[i]->oid); |
ae7c0c92 JH |
808 | if (!blob) |
809 | continue; | |
810 | obj = &blob->object; | |
092c55d0 | 811 | obj->flags |= USED; |
90cf590f JS |
812 | if (name_objects) |
813 | add_decoration(fsck_walk_options.object_names, | |
814 | obj, | |
815 | xstrfmt(":%s", active_cache[i]->name)); | |
271b8d25 | 816 | mark_object_reachable(obj); |
ae7c0c92 | 817 | } |
53dc3f3e JH |
818 | if (active_cache_tree) |
819 | fsck_cache_tree(active_cache_tree); | |
ae7c0c92 JH |
820 | } |
821 | ||
8ba0bbb2 | 822 | check_connectivity(); |
e2b4f635 | 823 | return errors_found; |
20222118 | 824 | } |