pkg/osutil/signal_linux.go
func dflSignal(sig syscall.Signal) {
	// clearing out the sigact sets the signal to SIG_DFL
	var sigactBuf [32]uint64
	ptr := unsafe.Pointer(&sigactBuf)
	syscall.Syscall6(uintptr(syscall.SYS_RT_SIGACTION), uintptr(sig), uintptr(ptr), 0, 8, 0, 0)
}
func dflSignal(sig syscall.Signal) {
	// clearing out the sigact sets the signal to SIG_DFL
	var sigactBuf [32]uint64
	ptr := unsafe.Pointer(&sigactBuf)
	syscall.Syscall6(uintptr(syscall.SYS_RT_SIGACTION), uintptr(sig), uintptr(ptr), 0, 8, 0, 0)
}
// dflSignal sets the given signal to SIG_DFL