Example of using sigaction()

#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>

static void hdl (int sig, siginfo_t *siginfo, void *context)
{
    
    
	printf ("Sending PID: %ld, UID: %ld\n",
			(long)siginfo->si_pid, (long)siginfo->si_uid);
}

int main (int argc, char *argv[])
{
    
    
	struct sigaction act;

	memset (&act, '\0', sizeof(act));

	/* Use the sa_sigaction field because the handles has two additional parameters */
	act.sa_sigaction = &hdl;

	/* The SA_SIGINFO flag tells sigaction() to use the sa_sigaction field, not sa_handler. */
	act.sa_flags = SA_SIGINFO;

	/* use ctrl+c  to send SIGINT */
	if (sigaction(SIGINT, &act, NULL) < 0) {
    
    
		perror ("sigaction");
		return 1;
	}

	while (1)
		sleep (10);

	return 0;
}