r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./file1\x00', 0x802c2, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000540)='./file1\x00', 0x105142, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000280)='/proc/self/exe\x00', 0x0, 0x0)
sendfile(r1, r2, 0x0, 0x100000001)
writev(r0, &(0x7f00000000c0)=[{&(0x7f0000000200)="af", 0x1}], 0x1)