ruser_name
if (ruser_name(g->gl_statv[i]->st_uid) != NULL)
if (ruser_name((uid_t)(d[i]->a.uid)) != NULL)
const char *ruser_name(uid_t uid);
ruser_name(g.gl_statv[i]->st_uid),
ruser_name(sb.st_uid),