r0 = openat$ttyS3(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x0)
r1 = openat$ttyS3(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)
dup3(r0, r1, 0x0)