uid = strtol(owner_uid, &end, 10);
if (end == owner_uid || *end != '\0' || errno != 0) {
ERR("Failed to parse `%s` as a user id.", owner_uid);
uid = strtol(owner_uid, &end, 10);
if (end == owner_uid || *end != '\0' || errno != 0) {
ERR("Failed to parse `%s` as a user id.", owner_uid);