r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f00000000c0)='/sys/power/image_size', 0x0, 0x0)
pipe2$9p(&(0x7f0000000000)={0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
sendfile(r1, r0, 0x0, 0x200)