ISPTM 132 maint/gnulib/lib/ptsname_r.c ioctl_arg.ic_cmd = ISPTM; ISPTM 170 maint/gnulib/lib/ptsname_r.c ret = ioctl (fd, ISPTM, &dev); ISPTM 173 maint/gnulib/lib/ptsname_r.c ret = ioctl (fd, ISPTM, NULL);