static int show_root = 0;
static int show_tags = 0;
static int show_unreachable = 0;
+static int keep_cache_objects = 0;
static unsigned char head_sha1[20];
static void check_connectivity(void)
struct object_list *refs;
if (!obj->parsed) {
- printf("missing %s %s\n", obj->type, sha1_to_hex(obj->sha1));
+ printf("missing %s %s\n",
+ obj->type, sha1_to_hex(obj->sha1));
continue;
}
printf("broken link from %7s %s\n",
obj->type, sha1_to_hex(obj->sha1));
printf(" to %7s %s\n",
- obj->type, sha1_to_hex(refs->item->sha1));
+ refs->item->type, sha1_to_hex(refs->item->sha1));
}
- /* Don't bother with tag reachability. */
- if (obj->type == tag_type)
- continue;
-
if (show_unreachable && !(obj->flags & REACHABLE)) {
- printf("unreachable %s %s\n", obj->type, sha1_to_hex(obj->sha1));
+ printf("unreachable %s %s\n",
+ obj->type, sha1_to_hex(obj->sha1));
continue;
}
}
}
+/*
+ * The entries in a tree are ordered in the _path_ order,
+ * which means that a directory entry is ordered by adding
+ * a slash to the end of it.
+ *
+ * So a directory called "a" is ordered _after_ a file
+ * called "a.c", because "a/" sorts after "a.c".
+ */
+#define TREE_UNORDERED (-1)
+#define TREE_HAS_DUPS (-2)
+
+static int verify_ordered(struct tree_entry_list *a, struct tree_entry_list *b)
+{
+ int len1 = strlen(a->name);
+ int len2 = strlen(b->name);
+ int len = len1 < len2 ? len1 : len2;
+ unsigned char c1, c2;
+ int cmp;
+
+ cmp = memcmp(a->name, b->name, len);
+ if (cmp < 0)
+ return 0;
+ if (cmp > 0)
+ return TREE_UNORDERED;
+
+ /*
+ * Ok, the first <len> characters are the same.
+ * Now we need to order the next one, but turn
+ * a '\0' into a '/' for a directory entry.
+ */
+ c1 = a->name[len];
+ c2 = b->name[len];
+ if (!c1 && !c2)
+ /*
+ * git-write-tree used to write out a nonsense tree that has
+ * entries with the same name, one blob and one tree. Make
+ * sure we do not have duplicate entries.
+ */
+ return TREE_HAS_DUPS;
+ if (!c1 && a->directory)
+ c1 = '/';
+ if (!c2 && b->directory)
+ c2 = '/';
+ return c1 < c2 ? 0 : TREE_UNORDERED;
+}
+
static int fsck_tree(struct tree *item)
{
- if (item->has_full_path) {
- fprintf(stderr, "warning: fsck-cache: tree %s "
+ int has_full_path = 0;
+ struct tree_entry_list *entry, *last;
+
+ last = NULL;
+ for (entry = item->entries; entry; entry = entry->next) {
+ if (strchr(entry->name, '/'))
+ has_full_path = 1;
+
+ switch (entry->mode) {
+ /*
+ * Standard modes..
+ */
+ case S_IFREG | 0755:
+ case S_IFREG | 0644:
+ case S_IFLNK:
+ case S_IFDIR:
+ break;
+ /*
+ * This is nonstandard, but we had a few of these
+ * early on when we honored the full set of mode
+ * bits..
+ */
+ case S_IFREG | 0664:
+ break;
+ default:
+ printf("tree %s has entry %o %s\n",
+ sha1_to_hex(item->object.sha1),
+ entry->mode, entry->name);
+ }
+
+ if (last) {
+ switch (verify_ordered(last, entry)) {
+ case TREE_UNORDERED:
+ fprintf(stderr, "tree %s not ordered\n",
+ sha1_to_hex(item->object.sha1));
+ return -1;
+ case TREE_HAS_DUPS:
+ fprintf(stderr, "tree %s has duplicate entries for '%s'\n",
+ sha1_to_hex(item->object.sha1),
+ entry->name);
+ return -1;
+ default:
+ break;
+ }
+ }
+
+ last = entry;
+ }
+
+ if (has_full_path) {
+ fprintf(stderr, "warning: git-fsck-cache: tree %s "
"has full pathnames in it\n",
sha1_to_hex(item->object.sha1));
}
+
return 0;
}
static int fsck_commit(struct commit *commit)
{
+ free(commit->buffer);
+ commit->buffer = NULL;
if (!commit->tree)
return -1;
if (!commit->parents && show_root)
static int fsck_tag(struct tag *tag)
{
+ struct object *tagged = tag->tagged;
+
+ if (!tagged) {
+ printf("bad object in tag %s\n", sha1_to_hex(tag->object.sha1));
+ return -1;
+ }
if (!show_tags)
return 0;
- printf("tagged %s %s",
- tag->tagged->type,
- sha1_to_hex(tag->tagged->sha1));
- printf(" (%s) in %s\n",
- tag->tag, sha1_to_hex(tag->object.sha1));
+ printf("tagged %s %s", tagged->type, sha1_to_hex(tagged->sha1));
+ printf(" (%s) in %s\n", tag->tag, sha1_to_hex(tag->object.sha1));
return 0;
}
return 0;
}
+static int read_sha1_reference(const char *path)
+{
+ char hexname[60];
+ unsigned char sha1[20];
+ int fd = open(path, O_RDONLY), len;
+ struct object *obj;
+
+ if (fd < 0)
+ return -1;
+
+ len = read(fd, hexname, sizeof(hexname));
+ close(fd);
+ if (len < 40)
+ return -1;
+
+ if (get_sha1_hex(hexname, sha1) < 0)
+ return -1;
+
+ obj = lookup_object(sha1);
+ if (!obj)
+ return error("%s: invalid sha1 pointer %.40s", path, hexname);
+
+ obj->used = 1;
+ mark_reachable(obj, REACHABLE);
+ return 0;
+}
+
+static int find_file_objects(const char *base, const char *name)
+{
+ int baselen = strlen(base);
+ int namelen = strlen(name);
+ char *path = xmalloc(baselen + namelen + 2);
+ struct stat st;
+
+ memcpy(path, base, baselen);
+ path[baselen] = '/';
+ memcpy(path + baselen + 1, name, namelen+1);
+ if (stat(path, &st) < 0)
+ return 0;
+
+ /*
+ * Recurse into directories
+ */
+ if (S_ISDIR(st.st_mode)) {
+ int count = 0;
+ DIR *dir = opendir(path);
+ if (dir) {
+ struct dirent *de;
+ while ((de = readdir(dir)) != NULL) {
+ if (de->d_name[0] == '.')
+ continue;
+ count += find_file_objects(path, de->d_name);
+ }
+ closedir(dir);
+ }
+ return count;
+ }
+ if (S_ISREG(st.st_mode))
+ return read_sha1_reference(path) == 0;
+ return 0;
+}
+
+static void get_default_heads(void)
+{
+ char *git_dir = gitenv(GIT_DIR_ENVIRONMENT) ? : DEFAULT_GIT_DIR_ENVIRONMENT;
+ int count = find_file_objects(git_dir, "refs");
+ if (!count)
+ die("No default references");
+}
+
int main(int argc, char **argv)
{
int i, heads;
show_root = 1;
continue;
}
+ if (!strcmp(arg, "--cache")) {
+ keep_cache_objects = 1;
+ continue;
+ }
if (*arg == '-')
- usage("fsck-cache [--tags] [[--unreachable] <head-sha1>*]");
+ usage("git-fsck-cache [--tags] [[--unreachable] [--cache] <head-sha1>*]");
}
- sha1_dir = getenv(DB_ENVIRONMENT) ? : DEFAULT_DB_ENVIRONMENT;
+ sha1_dir = get_object_directory();
for (i = 0; i < 256; i++) {
static char dir[4096];
sprintf(dir, "%s/%02x", sha1_dir, i);
continue;
if (!get_sha1(arg, head_sha1)) {
- struct commit *commit = lookup_commit(head_sha1);
- struct object *obj;
+ struct object *obj = lookup_object(head_sha1);
- /* Error is printed by lookup_commit(). */
- if (!commit)
+ /* Error is printed by lookup_object(). */
+ if (!obj)
continue;
- obj = &commit->object;
obj->used = 1;
mark_reachable(obj, REACHABLE);
heads++;
error("expected sha1, got %s", arg);
}
+ /*
+ * If we've not been given any explicit head information, do the
+ * default ones from .git/refs. We also consider the index file
+ * in this case (ie this implies --cache).
+ */
if (!heads) {
- if (show_unreachable) {
- fprintf(stderr, "unable to do reachability without a head\n");
- show_unreachable = 0;
+ get_default_heads();
+ keep_cache_objects = 1;
+ }
+
+ if (keep_cache_objects) {
+ int i;
+ read_cache();
+ for (i = 0; i < active_nr; i++) {
+ struct blob *blob = lookup_blob(active_cache[i]->sha1);
+ struct object *obj;
+ if (!blob)
+ continue;
+ obj = &blob->object;
+ obj->used = 1;
+ mark_reachable(obj, REACHABLE);
}
- fprintf(stderr, "expect dangling commits - potential heads - due to lack of head information\n");
}
check_connectivity();