openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x42, 0x0)
r0 = open(&(0x7f0000000080)='./file1\x00', 0x0, 0x0)
r1 = signalfd4(0xffffffffffffffff, &(0x7f0000000280), 0x8, 0x0)
dup3(r0, r1, 0x0)