/* Example of using sigaction() to setup a signal handler with 3 arguments
 * including siginfo_t.
 */
#include 
#include 
#include 
#include 
 
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;
 
    if (sigaction(SIGTERM, &act, NULL) < 0) {
        perror ("sigaction");
        return 1;
    }
 
    while (1)
        sleep (10);
 
    return 0;
}