PATH_PORTS
if (stat(PATH_PORTS, &sb) == -1) {
err(EX_OSERR, "stat(" PATH_PORTS ")");
if (access(PATH_PORTS, R_OK | X_OK) != 0)
if ((dir = opendir(PATH_PORTS)) == NULL)
err(EX_OSERR, "opendir" PATH_PORTS ")");
if ((b = malloc(sizeof PATH_PORTS + 1 + dirp->d_namlen))
strcpy(b, PATH_PORTS);