Function should_prune_worktree

worktree.c:929–1018

}

int should_prune_worktree(const char *id, struct strbuf *reason, char **wtpath, timestamp_t expire)
{
	struct stat st;
	struct strbuf dotgit = STRBUF_INIT;
	struct strbuf gitdir = STRBUF_INIT;
	struct strbuf repo = STRBUF_INIT;
	struct strbuf file = STRBUF_INIT;
	char *path = NULL;
	int rc = 0;
	int fd;
	size_t len;
	ssize_t read_result;

	*wtpath = NULL;

	path = repo_common_path(the_repository, "worktrees/%s", id);
	strbuf_realpath(&repo, path, 1);
	FREE_AND_NULL(path);

	strbuf_addf(&gitdir, "%s/gitdir", repo.buf);
	if (!is_directory(repo.buf)) {
		strbuf_addstr(reason, _("not a valid directory"));
		rc = 1;
		goto done;
	}
	strbuf_addf(&file, "%s/locked", repo.buf);
	if (file_exists(file.buf)) {
		goto done;
	}
	if (stat(gitdir.buf, &st)) {
		strbuf_addstr(reason, _("gitdir file does not exist"));
		rc = 1;
		goto done;
	}
	fd = open(gitdir.buf, O_RDONLY);
	if (fd < 0) {
		strbuf_addf(reason, _("unable to read gitdir file (%s)"),
			    strerror(errno));
		rc = 1;
		goto done;
	}
	len = xsize_t(st.st_size);
	path = xmallocz(len);

	read_result = read_in_full(fd, path, len);
	close(fd);
	if (read_result < 0) {
		strbuf_addf(reason, _("unable to read gitdir file (%s)"),
			    strerror(errno));
		rc = 1;
		goto done;
	} else if (read_result != len) {
		strbuf_addf(reason,
			    _("short read (expected %"PRIuMAX" bytes, read %"PRIuMAX")"),
			    (uintmax_t)len, (uintmax_t)read_result);
		rc = 1;
		goto done;
	}