r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) r1 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$TIOCSPTLCK(r1, 0x40045431, &(0x7f0000000040)) r2 = ioctl$TIOCGPTPEER(r1, 0x5441, 0x0) dup2(r0, r2)