On Fri, 2005-05-27 at 12:30 -0500, Davy Durham wrote:
> Hi, I'm not sure if there's a posix way of doing this, but wanted to
> check if there is a way in linux.
>
> I want to have a daemon that fork/execs a new process, but don't want
> (for various reasons) the responsibility for cleaning up those process
> with the wait() function family. I'm assuming that if the init process
> became the parent of one of these forked processes, then it would clean
> them up for me (is this assumption true?). Besides the daemon process
> exiting, is there a way to disown the process on purpose so that init
> inherits it?
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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
