#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct sigaction sa;
struct sigaction osa;

static void (*oldHandler)(int, siginfo_t*, void*);

static void handler(int signo, siginfo_t* info, void* ctxt) {
	if (oldHandler) {
		oldHandler(signo, info, ctxt);
	}
}

int install_handler() {
	// Install our own signal handler.
	memset(&sa, 0, sizeof sa);
	sa.sa_sigaction = handler;