12 #define REACHABLE 0x0001
14 static int show_root = 0;
15 static int show_tags = 0;
16 static int show_unreachable = 0;
17 static int check_full = 0;
18 static int check_strict = 0;
19 static int keep_cache_objects = 0;
20 static unsigned char head_sha1[20];
22 #ifdef NO_D_INO_IN_DIRENT
24 #define DIRENT_SORT_HINT(de) 0
27 #define DIRENT_SORT_HINT(de) ((de)->d_ino)
30 static void objreport(struct object *obj, const char *severity,
31 const char *err, va_list params)
33 fprintf(stderr, "%s in %s %s: ",
34 severity, obj->type, sha1_to_hex(obj->sha1));
35 vfprintf(stderr, err, params);
39 static int objerror(struct object *obj, const char *err, ...)
42 va_start(params, err);
43 objreport(obj, "error", err, params);
48 static int objwarning(struct object *obj, const char *err, ...)
51 va_start(params, err);
52 objreport(obj, "warning", err, params);
58 static void check_connectivity(void)
62 /* Look up all the requirements, warn about missing objects.. */
63 for (i = 0; i < obj_allocs; i++) {
64 struct object *obj = objs[i];
70 if (has_sha1_file(obj->sha1))
73 printf("missing %s %s\n",
74 obj->type, sha1_to_hex(obj->sha1));
79 const struct object_refs *refs = obj->refs;
81 for (j = 0; j < refs->count; j++) {
82 struct object *ref = refs->ref[j];
84 (has_sha1_file(ref->sha1)))
86 printf("broken link from %7s %s\n",
87 obj->type, sha1_to_hex(obj->sha1));
88 printf(" to %7s %s\n",
89 ref->type, sha1_to_hex(ref->sha1));
93 if (show_unreachable && !(obj->flags & REACHABLE)) {
94 printf("unreachable %s %s\n",
95 obj->type, sha1_to_hex(obj->sha1));
100 printf("dangling %s %s\n", obj->type,
101 sha1_to_hex(obj->sha1));
107 * The entries in a tree are ordered in the _path_ order,
108 * which means that a directory entry is ordered by adding
109 * a slash to the end of it.
111 * So a directory called "a" is ordered _after_ a file
112 * called "a.c", because "a/" sorts after "a.c".
114 #define TREE_UNORDERED (-1)
115 #define TREE_HAS_DUPS (-2)
117 static int verify_ordered(struct tree_entry_list *a, struct tree_entry_list *b)
119 int len1 = strlen(a->name);
120 int len2 = strlen(b->name);
121 int len = len1 < len2 ? len1 : len2;
122 unsigned char c1, c2;
125 cmp = memcmp(a->name, b->name, len);
129 return TREE_UNORDERED;
132 * Ok, the first <len> characters are the same.
133 * Now we need to order the next one, but turn
134 * a '\0' into a '/' for a directory entry.
140 * git-write-tree used to write out a nonsense tree that has
141 * entries with the same name, one blob and one tree. Make
142 * sure we do not have duplicate entries.
144 return TREE_HAS_DUPS;
145 if (!c1 && a->directory)
147 if (!c2 && b->directory)
149 return c1 < c2 ? 0 : TREE_UNORDERED;
152 static int fsck_tree(struct tree *item)
155 int has_full_path = 0;
156 int has_zero_pad = 0;
157 int has_bad_modes = 0;
158 int has_dup_entries = 0;
159 int not_properly_sorted = 0;
160 struct tree_entry_list *entry, *last;
163 for (entry = item->entries; entry; entry = entry->next) {
164 if (strchr(entry->name, '/'))
166 has_zero_pad |= entry->zeropad;
168 switch (entry->mode) {
178 * This is nonstandard, but we had a few of these
179 * early on when we honored the full set of mode
190 switch (verify_ordered(last, entry)) {
192 not_properly_sorted = 1;
207 item->entries = NULL;
213 objwarning(&item->object, "contains full pathnames");
216 objwarning(&item->object, "contains zero-padded file modes");
219 objwarning(&item->object, "contains bad file modes");
221 if (has_dup_entries) {
222 retval = objerror(&item->object, "contains duplicate file entries");
224 if (not_properly_sorted) {
225 retval = objerror(&item->object, "not properly sorted");
230 static int fsck_commit(struct commit *commit)
232 char *buffer = commit->buffer;
233 unsigned char tree_sha1[20], sha1[20];
235 if (memcmp(buffer, "tree ", 5))
236 return objerror(&commit->object, "invalid format - expected 'tree' line");
237 if (get_sha1_hex(buffer+5, tree_sha1) || buffer[45] != '\n')
238 return objerror(&commit->object, "invalid 'tree' line format - bad sha1");
240 while (!memcmp(buffer, "parent ", 7)) {
241 if (get_sha1_hex(buffer+7, sha1) || buffer[47] != '\n')
242 return objerror(&commit->object, "invalid 'parent' line format - bad sha1");
245 if (memcmp(buffer, "author ", 7))
246 return objerror(&commit->object, "invalid format - expected 'author' line");
247 free(commit->buffer);
248 commit->buffer = NULL;
250 return objerror(&commit->object, "could not load commit's tree %s", tree_sha1);
251 if (!commit->parents && show_root)
252 printf("root %s\n", sha1_to_hex(commit->object.sha1));
254 printf("bad commit date in %s\n",
255 sha1_to_hex(commit->object.sha1));
259 static int fsck_tag(struct tag *tag)
261 struct object *tagged = tag->tagged;
264 return objerror(&tag->object, "could not load tagged object");
269 printf("tagged %s %s", tagged->type, sha1_to_hex(tagged->sha1));
270 printf(" (%s) in %s\n", tag->tag, sha1_to_hex(tag->object.sha1));
274 static int fsck_sha1(unsigned char *sha1)
276 struct object *obj = parse_object(sha1);
278 return error("%s: object not found", sha1_to_hex(sha1));
279 if (obj->type == blob_type)
281 if (obj->type == tree_type)
282 return fsck_tree((struct tree *) obj);
283 if (obj->type == commit_type)
284 return fsck_commit((struct commit *) obj);
285 if (obj->type == tag_type)
286 return fsck_tag((struct tag *) obj);
287 /* By now, parse_object() would've returned NULL instead. */
288 return objerror(obj, "unknown type '%s' (internal fsck error)", obj->type);
292 * This is the sorting chunk size: make it reasonably
293 * big so that we can sort well..
295 #define MAX_SHA1_ENTRIES (1024)
299 unsigned char sha1[20];
304 struct sha1_entry *entry[MAX_SHA1_ENTRIES];
307 static int ino_compare(const void *_a, const void *_b)
309 const struct sha1_entry *a = _a, *b = _b;
310 unsigned long ino1 = a->ino, ino2 = b->ino;
311 return ino1 < ino2 ? -1 : ino1 > ino2 ? 1 : 0;
314 static void fsck_sha1_list(void)
316 int i, nr = sha1_list.nr;
319 qsort(sha1_list.entry, nr,
320 sizeof(struct sha1_entry *), ino_compare);
321 for (i = 0; i < nr; i++) {
322 struct sha1_entry *entry = sha1_list.entry[i];
323 unsigned char *sha1 = entry->sha1;
325 sha1_list.entry[i] = NULL;
332 static void add_sha1_list(unsigned char *sha1, unsigned long ino)
334 struct sha1_entry *entry = xmalloc(sizeof(*entry));
338 memcpy(entry->sha1, sha1, 20);
340 if (nr == MAX_SHA1_ENTRIES) {
344 sha1_list.entry[nr] = entry;
348 static int fsck_dir(int i, char *path)
350 DIR *dir = opendir(path);
356 while ((de = readdir(dir)) != NULL) {
358 unsigned char sha1[20];
359 int len = strlen(de->d_name);
363 if (de->d_name[1] != '.')
366 if (de->d_name[0] != '.')
370 sprintf(name, "%02x", i);
371 memcpy(name+2, de->d_name, len+1);
372 if (get_sha1_hex(name, sha1) < 0)
374 add_sha1_list(sha1, DIRENT_SORT_HINT(de));
377 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
383 static int default_refs = 0;
385 static int fsck_handle_ref(const char *refname, const unsigned char *sha1)
389 obj = lookup_object(sha1);
391 if (has_sha1_file(sha1)) {
393 return 0; /* it is in a pack */
395 error("%s: invalid sha1 pointer %s", refname, sha1_to_hex(sha1));
396 /* We'll continue with the rest despite the error.. */
401 mark_reachable(obj, REACHABLE);
405 static void get_default_heads(void)
407 for_each_ref(fsck_handle_ref);
409 die("No default references");
412 static void fsck_object_dir(const char *path)
415 for (i = 0; i < 256; i++) {
416 static char dir[4096];
417 sprintf(dir, "%s/%02x", path, i);
423 static int fsck_head_link(void)
425 unsigned char sha1[20];
426 const char *git_HEAD = strdup(git_path("HEAD"));
427 const char *git_refs_heads_master = resolve_ref(git_HEAD, sha1, 1);
428 int pfxlen = strlen(git_HEAD) - 4; /* strip .../.git/ part */
430 if (!git_refs_heads_master)
431 return error("HEAD is not a symbolic ref");
432 if (strncmp(git_refs_heads_master + pfxlen, "refs/heads/", 11))
433 return error("HEAD points to something strange (%s)",
434 git_refs_heads_master + pfxlen);
435 if (!memcmp(null_sha1, sha1, 20))
436 return error("HEAD: not a valid git pointer");
440 int main(int argc, char **argv)
444 setup_git_directory();
446 for (i = 1; i < argc; i++) {
447 const char *arg = argv[i];
449 if (!strcmp(arg, "--unreachable")) {
450 show_unreachable = 1;
453 if (!strcmp(arg, "--tags")) {
457 if (!strcmp(arg, "--root")) {
461 if (!strcmp(arg, "--cache")) {
462 keep_cache_objects = 1;
465 if (!strcmp(arg, "--full")) {
469 if (!strcmp(arg, "--strict")) {
474 usage("git-fsck-objects [--tags] [--root] [[--unreachable] [--cache] [--full] [--strict] <head-sha1>*]");
478 fsck_object_dir(get_object_directory());
480 struct alternate_object_database *alt;
481 struct packed_git *p;
483 for (alt = alt_odb_list; alt; alt = alt->next) {
484 char namebuf[PATH_MAX];
485 int namelen = alt->name - alt->base;
486 memcpy(namebuf, alt->base, namelen);
487 namebuf[namelen - 1] = 0;
488 fsck_object_dir(namebuf);
490 prepare_packed_git();
491 for (p = packed_git; p; p = p->next)
492 /* verify gives error messages itself */
495 for (p = packed_git; p; p = p->next) {
496 int num = num_packed_objects(p);
497 for (i = 0; i < num; i++) {
498 unsigned char sha1[20];
499 nth_packed_object_sha1(p, i, sha1);
506 for (i = 1; i < argc; i++) {
507 const char *arg = argv[i];
512 if (!get_sha1(arg, head_sha1)) {
513 struct object *obj = lookup_object(head_sha1);
515 /* Error is printed by lookup_object(). */
520 mark_reachable(obj, REACHABLE);
524 error("invalid parameter: expected sha1, got '%s'", arg);
528 * If we've not been given any explicit head information, do the
529 * default ones from .git/refs. We also consider the index file
530 * in this case (ie this implies --cache).
534 keep_cache_objects = 1;
537 if (keep_cache_objects) {
540 for (i = 0; i < active_nr; i++) {
541 struct blob *blob = lookup_blob(active_cache[i]->sha1);
547 mark_reachable(obj, REACHABLE);
551 check_connectivity();