Re: disowning a process

From: Davy Durham
Date: Fri May 27 2005 - 14:02:00 EST


Cool.. I looked at the daemon function and I might be able to use it..

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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