2005-04-09 00:02:42 +02:00
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#include "cache.h"
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#include <sys/types.h>
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#include <dirent.h>
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2005-04-18 20:39:48 +02:00
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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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2005-04-13 18:57:30 +02:00
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2005-04-26 01:34:13 +02:00
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static int show_root = 0;
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2005-04-26 01:31:13 +02:00
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static int show_tags = 0;
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2005-04-13 18:57:30 +02:00
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static int show_unreachable = 0;
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static unsigned char head_sha1[20];
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2005-04-11 08:13:09 +02:00
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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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2005-04-18 20:39:48 +02:00
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for (i = 0; i < nr_objs; i++) {
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struct object *obj = objs[i];
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2005-04-11 08:13:09 +02:00
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2005-04-18 20:39:48 +02:00
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if (show_unreachable && !(obj->flags & REACHABLE)) {
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2005-04-19 02:35:31 +02:00
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printf("unreachable %s %s\n", obj->type, sha1_to_hex(obj->sha1));
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2005-04-11 08:13:09 +02:00
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continue;
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2005-04-13 18:57:30 +02:00
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}
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2005-04-11 08:13:09 +02:00
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2005-04-18 20:39:48 +02:00
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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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2005-04-13 18:57:30 +02:00
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}
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2005-04-11 08:13:09 +02:00
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}
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}
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2005-04-09 02:11:14 +02:00
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static int fsck_tree(unsigned char *sha1, void *data, unsigned long size)
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2005-04-09 00:02:42 +02:00
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{
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2005-04-18 20:39:48 +02:00
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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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2005-04-09 02:11:14 +02:00
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}
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2005-04-09 09:25:22 +02:00
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return 0;
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2005-04-09 02:11:14 +02:00
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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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2005-04-18 20:39:48 +02:00
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struct commit *commit = lookup_commit(sha1);
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if (parse_commit(commit))
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2005-04-09 02:11:14 +02:00
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return -1;
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2005-04-18 20:39:48 +02:00
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if (!commit->tree)
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2005-04-09 02:11:14 +02:00
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return -1;
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2005-04-26 01:34:13 +02:00
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if (!commit->parents && show_root)
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2005-04-13 18:57:30 +02:00
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printf("root %s\n", sha1_to_hex(sha1));
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2005-04-25 01:20:53 +02:00
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if (!commit->date)
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printf("bad commit date in %s\n", sha1_to_hex(sha1));
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2005-04-09 09:25:22 +02:00
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return 0;
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2005-04-09 00:02:42 +02:00
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}
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2005-04-24 23:10:55 +02:00
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static int fsck_blob(unsigned char *sha1, void *data, unsigned long size)
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{
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struct blob *blob = lookup_blob(sha1);
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blob->object.parsed = 1;
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return 0;
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}
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2005-04-25 21:07:44 +02:00
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static int fsck_tag(unsigned char *sha1, void *data, unsigned long size)
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{
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int typelen, taglen;
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unsigned char object[20];
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2005-04-26 00:21:49 +02:00
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char object_hex[60];
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2005-04-25 21:07:44 +02:00
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const char *type_line, *tag_line, *sig_line;
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if (size < 64)
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return -1;
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if (memcmp("object ", data, 7) || get_sha1_hex(data + 7, object))
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return -1;
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type_line = data + 48;
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if (memcmp("\ntype ", type_line-1, 6))
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return -1;
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tag_line = strchr(type_line, '\n');
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if (!tag_line || memcmp("tag ", ++tag_line, 4))
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return -1;
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sig_line = strchr(tag_line, '\n');
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if (!sig_line)
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return -1;
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sig_line++;
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typelen = tag_line - type_line - strlen("type \n");
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if (typelen >= 20)
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return -1;
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taglen = sig_line - tag_line - strlen("tag \n");
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2005-04-26 01:31:13 +02:00
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if (!show_tags)
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return 0;
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2005-04-26 00:21:49 +02:00
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strcpy(object_hex, sha1_to_hex(object));
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printf("tagged %.*s %s (%.*s) in %s\n",
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2005-04-25 21:07:44 +02:00
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typelen, type_line + 5,
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2005-04-26 00:21:49 +02:00
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object_hex,
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taglen, tag_line + 4,
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sha1_to_hex(sha1));
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2005-04-25 21:07:44 +02:00
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return 0;
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}
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2005-04-18 20:39:48 +02:00
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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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2005-04-09 00:02:42 +02:00
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{
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2005-04-09 02:11:14 +02:00
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if (!strcmp(tag, "blob")) {
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2005-04-24 23:10:55 +02:00
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if (fsck_blob(sha1, data, size) < 0)
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return -1;
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2005-04-09 02:11:14 +02:00
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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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2005-04-25 21:07:44 +02:00
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} else if (!strcmp(tag, "tag")) {
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if (fsck_tag(sha1, data, size) < 0)
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return -1;
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2005-04-09 02:11:14 +02:00
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} else
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2005-04-09 00:02:42 +02:00
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return -1;
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2005-04-18 20:39:48 +02:00
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return 0;
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2005-04-09 00:02:42 +02:00
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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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2005-04-20 10:10:46 +02:00
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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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2005-04-09 00:02:42 +02:00
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munmap(map, mapsize);
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2005-04-20 10:10:46 +02:00
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if (!fsck_entry(sha1, type, buffer, size))
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2005-04-09 00:02:42 +02:00
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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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2005-04-13 11:28:48 +02:00
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return error("missing sha1 directory '%s'", path);
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2005-04-09 00:02:42 +02:00
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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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2005-04-14 01:42:09 +02:00
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int i, heads;
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2005-04-09 00:02:42 +02:00
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char *sha1_dir;
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2005-04-26 01:31:13 +02:00
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--unreachable")) {
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show_unreachable = 1;
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continue;
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}
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if (!strcmp(arg, "--tags")) {
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show_tags = 1;
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continue;
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}
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2005-04-26 01:34:13 +02:00
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if (!strcmp(arg, "--root")) {
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show_root = 1;
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continue;
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}
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2005-04-26 01:31:13 +02:00
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if (*arg == '-')
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usage("fsck-cache [--tags] [[--unreachable] <head-sha1>*]");
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}
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2005-04-14 01:42:09 +02:00
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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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2005-04-13 18:57:30 +02:00
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for (i = 1; i < argc; i++) {
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2005-04-26 01:31:13 +02:00
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const char *arg = argv[i];
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if (*arg == '-')
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2005-04-13 18:57:30 +02:00
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continue;
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2005-04-26 01:31:13 +02:00
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if (!get_sha1_hex(arg, head_sha1)) {
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2005-04-18 21:12:00 +02:00
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struct object *obj = &lookup_commit(head_sha1)->object;
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2005-04-18 20:39:48 +02:00
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obj->used = 1;
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mark_reachable(obj, REACHABLE);
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2005-04-14 01:42:09 +02:00
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heads++;
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2005-04-13 18:57:30 +02:00
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continue;
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}
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2005-04-26 01:31:13 +02:00
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error("expected sha1, got %s", arg);
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2005-04-13 18:57:30 +02:00
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}
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2005-04-14 01:42:09 +02:00
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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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2005-04-09 00:02:42 +02:00
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}
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2005-04-14 01:42:09 +02:00
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2005-04-11 08:13:09 +02:00
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check_connectivity();
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2005-04-09 00:02:42 +02:00
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return 0;
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}
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