pullreqd.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31


#include <signal.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/type.h>
#include <syslog.h>
#include <unistd.h>

pid_t fork_proc() {
	/* Fork off the parent. */
	pid_t pid = fork();

	/* The process id is non zero, so it must be the parent process. */
	if (pid) {
		/* Exit with EXIT_FAILURE if the parent's pid is
		 * negative, otherwise exit with EXIT_SUCCESS.
		 */
		exit((pid < 0) ? EXIT_FAILURE : EXIT_SUCCESS);
	}
	return pid;
}

void child_handler(int sig_num) {
	signal(SIGCHLD, child_handler);
}

void hangup_handler(int sig_num) {
	signal(SIGHUP, hangup_handler);
}