r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000540), 0x0, 0x0)
ioctl$TCSETAF(r0, 0x541a, &(0x7f0000000580)={0x0, 0x0, 0x0, 0x0, 0x0, "909b54fce78f597b"})