Function open_pack_bitmap_1

pack-bitmap.c:542–597

}

static int open_pack_bitmap_1(struct bitmap_index *bitmap_git, struct packed_git *packfile)
{
	int fd;
	struct stat st;
	char *bitmap_name;

	bitmap_name = pack_bitmap_filename(packfile);
	fd = git_open(bitmap_name);

	if (fd < 0) {
		if (errno != ENOENT)
			warning_errno("cannot open '%s'", bitmap_name);
		free(bitmap_name);
		return -1;
	}
	free(bitmap_name);

	if (fstat(fd, &st)) {
		error_errno(_("cannot fstat bitmap file"));
		close(fd);
		return -1;
	}

	if (bitmap_git->pack || bitmap_git->midx) {
		trace2_data_string("bitmap", bitmap_repo(bitmap_git),
				   "ignoring extra bitmap file",
				   packfile->pack_name);
		close(fd);
		return -1;
	}

	if (!is_pack_valid(packfile)) {
		close(fd);
		return -1;
	}

	bitmap_git->pack = packfile;
	bitmap_git->map_size = xsize_t(st.st_size);
	bitmap_git->map = xmmap(NULL, bitmap_git->map_size, PROT_READ, MAP_PRIVATE, fd, 0);
	bitmap_git->map_pos = 0;
	bitmap_git->base_nr = 0;
	close(fd);

	if (load_bitmap_header(bitmap_git) < 0) {
		munmap(bitmap_git->map, bitmap_git->map_size);
		bitmap_git->map = NULL;
		bitmap_git->map_size = 0;
		bitmap_git->map_pos = 0;
		bitmap_git->pack = NULL;
		return -1;
	}

	trace2_data_string("bitmap", bitmap_repo(bitmap_git),
			   "opened bitmap file", packfile->pack_name);
	return 0;
}

static int load_reverse_index(struct repository *r, struct bitmap_index *bitmap_git)