7 * These two functions should build up a graph in memory about
8 * what objects we've referenced, and found, and types..
10 * Right now we don't do that kind of reachability checking. Yet.
12 static void mark_needs_sha1(unsigned char *parent, const char * type, unsigned char *child)
16 static int mark_sha1_seen(unsigned char *sha1, char *tag)
21 static int fsck_tree(unsigned char *sha1, void *data, unsigned long size)
23 int warn_old_tree = 1;
26 int len = 1+strlen(data);
27 unsigned char *file_sha1 = data + len;
28 char *path = strchr(data, ' ');
30 if (size < len + 20 || !path || sscanf(data, "%o", &mode) != 1)
33 /* Warn about trees that don't do the recursive thing.. */
34 if (warn_old_tree && strchr(path, '/')) {
35 fprintf(stderr, "warning: fsck-cache: tree %s has full pathnames in it\n", sha1_to_hex(sha1));
41 mark_needs_sha1(sha1, S_ISDIR(mode) ? "tree" : "blob", file_sha1);
46 static int fsck_commit(unsigned char *sha1, void *data, unsigned long size)
49 unsigned char tree_sha1[20];
50 unsigned char parent_sha1[20];
52 if (memcmp(data, "tree ", 5))
54 if (get_sha1_hex(data + 5, tree_sha1) < 0)
56 mark_needs_sha1(sha1, "tree", tree_sha1);
57 data += 5 + 40 + 1; /* "tree " + <hex sha1> + '\n' */
59 while (!memcmp(data, "parent ", 7)) {
60 if (get_sha1_hex(data + 7, parent_sha1) < 0)
62 mark_needs_sha1(sha1, "commit", parent_sha1);
63 data += 7 + 40 + 1; /* "parent " + <hex sha1> + '\n' */
67 printf("root: %s\n", sha1_to_hex(sha1));
71 static int fsck_entry(unsigned char *sha1, char *tag, void *data, unsigned long size)
73 if (!strcmp(tag, "blob")) {
74 /* Nothing to check */;
75 } else if (!strcmp(tag, "tree")) {
76 if (fsck_tree(sha1, data, size) < 0)
78 } else if (!strcmp(tag, "commit")) {
79 if (fsck_commit(sha1, data, size) < 0)
83 return mark_sha1_seen(sha1, tag);
86 static int fsck_name(char *hex)
88 unsigned char sha1[20];
89 if (!get_sha1_hex(hex, sha1)) {
90 unsigned long mapsize;
91 void *map = map_sha1_file(sha1, &mapsize);
96 if (!check_sha1_signature(sha1, map, mapsize))
97 buffer = unpack_sha1_file(map, mapsize, type, &size);
99 if (buffer && !fsck_entry(sha1, type, buffer, size))
106 static int fsck_dir(int i, char *path)
108 DIR *dir = opendir(path);
112 fprintf(stderr, "missing sha1 directory '%s'", path);
116 while ((de = readdir(dir)) != NULL) {
118 int len = strlen(de->d_name);
122 if (de->d_name[1] != '.')
125 if (de->d_name[0] != '.')
129 sprintf(name, "%02x", i);
130 memcpy(name+2, de->d_name, len+1);
131 if (!fsck_name(name))
134 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
140 int main(int argc, char **argv)
147 sha1_dir = getenv(DB_ENVIRONMENT) ? : DEFAULT_DB_ENVIRONMENT;
148 for (i = 0; i < 256; i++) {
149 static char dir[4096];
150 sprintf(dir, "%s/%02x", sha1_dir, i);