r0 = creat(&(0x7f0000000000)='./file0\x00', 0x0)
r1 = openat$tun(0xffffffffffffff9c, &(0x7f00000001c0), 0x0, 0x0)
r2 = creat(&(0x7f0000000000)='./file0\x00', 0x0)
dup3(r2, r1, 0x0)
copy_file_range(r0, 0x0, r1, 0x0, 0x0, 0x0)