+static struct packed_git *packs = NULL;
+
+static void setup_index(unsigned char *sha1)
+{
+ struct packed_git *new_pack;
+ char filename[PATH_MAX];
+ strcpy(filename, path);
+ strcat(filename, "/objects/pack/pack-");
+ strcat(filename, sha1_to_hex(sha1));
+ strcat(filename, ".idx");
+ new_pack = parse_pack_index_file(sha1, filename);
+ new_pack->next = packs;
+ packs = new_pack;
+}
+
+static int setup_indices(void)
+{
+ DIR *dir;
+ struct dirent *de;
+ char filename[PATH_MAX];
+ unsigned char sha1[20];
+ sprintf(filename, "%s/objects/pack/", path);
+ dir = opendir(filename);
+ while ((de = readdir(dir)) != NULL) {
+ int namelen = strlen(de->d_name);
+ if (namelen != 50 ||
+ strcmp(de->d_name + namelen - 5, ".pack"))
+ continue;
+ get_sha1_hex(de->d_name + 5, sha1);
+ setup_index(sha1);
+ }
+ return 0;
+}
+
+static int copy_file(const char *source, const char *dest, const char *hex)
+{
+ if (use_link) {
+ if (!link(source, dest)) {
+ pull_say("link %s\n", hex);
+ return 0;
+ }
+ /* If we got ENOENT there is no point continuing. */
+ if (errno == ENOENT) {
+ fprintf(stderr, "does not exist %s\n", source);
+ return -1;
+ }
+ }
+ if (use_symlink && !symlink(source, dest)) {
+ pull_say("symlink %s\n", hex);
+ return 0;
+ }
+ if (use_filecopy) {
+ int ifd, ofd, status;
+ struct stat st;
+ void *map;
+ ifd = open(source, O_RDONLY);
+ if (ifd < 0 || fstat(ifd, &st) < 0) {
+ close(ifd);
+ fprintf(stderr, "cannot open %s\n", source);
+ return -1;
+ }
+ map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, ifd, 0);
+ close(ifd);
+ if (map == MAP_FAILED) {
+ fprintf(stderr, "cannot mmap %s\n", source);
+ return -1;
+ }
+ ofd = open(dest, O_WRONLY | O_CREAT | O_EXCL, 0666);
+ status = ((ofd < 0) ||
+ (write(ofd, map, st.st_size) != st.st_size));
+ munmap(map, st.st_size);
+ close(ofd);
+ if (status)
+ fprintf(stderr, "cannot write %s\n", dest);
+ else
+ pull_say("copy %s\n", hex);
+ return status;
+ }
+ fprintf(stderr, "failed to copy %s with given copy methods.\n", hex);
+ return -1;
+}
+
+static int fetch_pack(const unsigned char *sha1)
+{
+ struct packed_git *target;
+ char filename[PATH_MAX];
+ if (setup_indices())
+ return -1;
+ target = find_sha1_pack(sha1, packs);
+ if (!target)
+ return error("Couldn't find %s: not separate or in any pack",
+ sha1_to_hex(sha1));
+ if (get_verbosely) {
+ fprintf(stderr, "Getting pack %s\n",
+ sha1_to_hex(target->sha1));
+ fprintf(stderr, " which contains %s\n",
+ sha1_to_hex(sha1));
+ }
+ sprintf(filename, "%s/objects/pack/pack-%s.pack",
+ path, sha1_to_hex(target->sha1));
+ copy_file(filename, sha1_pack_name(target->sha1),
+ sha1_to_hex(target->sha1));
+ sprintf(filename, "%s/objects/pack/pack-%s.idx",
+ path, sha1_to_hex(target->sha1));
+ copy_file(filename, sha1_pack_index_name(target->sha1),
+ sha1_to_hex(target->sha1));
+ install_packed_git(target);
+ return 0;
+}
+
+static int fetch_file(const unsigned char *sha1)