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172 lines
3.7 KiB
172 lines
3.7 KiB
#include "cache.h" |
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#include <sys/types.h> |
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#include <dirent.h> |
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#include "commit.h" |
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#include "tree.h" |
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#include "blob.h" |
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#define REACHABLE 0x0001 |
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static int show_unreachable = 0; |
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static unsigned char head_sha1[20]; |
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static void check_connectivity(void) |
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{ |
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int i; |
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/* Look up all the requirements, warn about missing objects.. */ |
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for (i = 0; i < nr_objs; i++) { |
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struct object *obj = objs[i]; |
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if (show_unreachable && !(obj->flags & REACHABLE)) { |
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printf("unreachable %s %s\n", obj->type, sha1_to_hex(obj->sha1)); |
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continue; |
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} |
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if (!obj->parsed) { |
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printf("missing %s %s\n", obj->type, |
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sha1_to_hex(obj->sha1)); |
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} |
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if (!obj->used) { |
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printf("dangling %s %s\n", obj->type, |
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sha1_to_hex(obj->sha1)); |
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} |
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} |
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} |
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static int fsck_tree(unsigned char *sha1, void *data, unsigned long size) |
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{ |
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struct tree *item = lookup_tree(sha1); |
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if (parse_tree(item)) |
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return -1; |
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if (item->has_full_path) { |
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fprintf(stderr, "warning: fsck-cache: tree %s " |
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"has full pathnames in it\n", sha1_to_hex(sha1)); |
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} |
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return 0; |
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} |
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static int fsck_commit(unsigned char *sha1, void *data, unsigned long size) |
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{ |
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struct commit *commit = lookup_commit(sha1); |
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if (parse_commit(commit)) |
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return -1; |
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if (!commit->tree) |
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return -1; |
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if (!commit->parents) |
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printf("root %s\n", sha1_to_hex(sha1)); |
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return 0; |
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} |
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static int fsck_entry(unsigned char *sha1, char *tag, void *data, |
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unsigned long size) |
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{ |
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if (!strcmp(tag, "blob")) { |
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lookup_blob(sha1); /* Nothing to check; but notice it. */ |
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} else if (!strcmp(tag, "tree")) { |
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if (fsck_tree(sha1, data, size) < 0) |
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return -1; |
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} else if (!strcmp(tag, "commit")) { |
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if (fsck_commit(sha1, data, size) < 0) |
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return -1; |
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} else |
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return -1; |
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return 0; |
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} |
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static int fsck_name(char *hex) |
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{ |
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unsigned char sha1[20]; |
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if (!get_sha1_hex(hex, sha1)) { |
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unsigned long mapsize; |
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void *map = map_sha1_file(sha1, &mapsize); |
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if (map) { |
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char type[100]; |
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unsigned long size; |
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void *buffer = unpack_sha1_file(map, mapsize, type, &size); |
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if (!buffer) |
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return -1; |
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if (check_sha1_signature(sha1, buffer, size, type) < 0) |
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printf("sha1 mismatch %s\n", sha1_to_hex(sha1)); |
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munmap(map, mapsize); |
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if (!fsck_entry(sha1, type, buffer, size)) |
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return 0; |
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} |
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} |
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return -1; |
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} |
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static int fsck_dir(int i, char *path) |
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{ |
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DIR *dir = opendir(path); |
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struct dirent *de; |
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if (!dir) { |
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return error("missing sha1 directory '%s'", path); |
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} |
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while ((de = readdir(dir)) != NULL) { |
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char name[100]; |
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int len = strlen(de->d_name); |
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switch (len) { |
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case 2: |
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if (de->d_name[1] != '.') |
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break; |
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case 1: |
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if (de->d_name[0] != '.') |
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break; |
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continue; |
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case 38: |
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sprintf(name, "%02x", i); |
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memcpy(name+2, de->d_name, len+1); |
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if (!fsck_name(name)) |
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continue; |
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} |
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fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name); |
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} |
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closedir(dir); |
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return 0; |
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} |
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int main(int argc, char **argv) |
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{ |
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int i, heads; |
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char *sha1_dir; |
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sha1_dir = getenv(DB_ENVIRONMENT) ? : DEFAULT_DB_ENVIRONMENT; |
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for (i = 0; i < 256; i++) { |
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static char dir[4096]; |
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sprintf(dir, "%s/%02x", sha1_dir, i); |
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fsck_dir(i, dir); |
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} |
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heads = 0; |
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for (i = 1; i < argc; i++) { |
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if (!strcmp(argv[i], "--unreachable")) { |
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show_unreachable = 1; |
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continue; |
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} |
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if (!get_sha1_hex(argv[i], head_sha1)) { |
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struct object *obj = &lookup_commit(head_sha1)->object; |
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obj->used = 1; |
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mark_reachable(obj, REACHABLE); |
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heads++; |
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continue; |
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} |
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error("fsck-cache [[--unreachable] <head-sha1>*]"); |
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} |
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if (!heads) { |
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if (show_unreachable) { |
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fprintf(stderr, "unable to do reachability without a head\n"); |
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show_unreachable = 0; |
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} |
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fprintf(stderr, "expect dangling commits - potential heads - due to lack of head information\n"); |
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} |
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check_connectivity(); |
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return 0; |
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}
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