sigaction in c
/* Example of using sigaction() to setup a signal handler with 3 arguments
* including siginfo_t.
*/
#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: %ldn",
(long)siginfo->si_pid, (long)siginfo->si_uid);
}
int main (int argc, char *argv[])
{
struct sigaction act;
memset (&act, ' ', 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;
}