Cool.. I looked at the daemon function and I might be able to use it..I added "waitpid(pid,NULL,0);" after the outer-most if.. which is where the grand parent cleans up the pid of the intermediate parent.
However, I compiled your code... seems to work.. but where is the wait() done on the middle parrent so that it isn't left defunct?
Steven Rostedt wrote:
Try man daemon.
The way I use to do it was simply do a double fork. That is
(simplified)...
if ((pid = fork()) < 0) {
perror("fork");
} else if (!pid) {
/* child */
if ((pid = fork()) < 0) {
perror("child fork");
exit(-1);
} if (pid) {
/* child parent */
/* Here we detach from the child */
exit(0);
}
/* Now this code is a child running almost as a daemon
with init as the parent. */
setsid();
/* Now the child is completely detached from the original
parent */
/* ... daemon code here ... */
exit(0);
}
/* parent code here */
-- Steve
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