avahi-publish should die when stdin/stdout/stderr are closed

[DamjanGeorgievski]

avahi-publish should die when stdin/stdout/stderr are closed.

Why? It's common to spawn avahi-publish from other apps or scripts, so that the app publishes itself on the network without the need to implement Zeroconf itself.

In most cases, when the parent app dies (ends normally or is killed) avahi-publish will be killed too.

Unless, it's killed by SIGKILL (or perhaps other non-catchable signals). Then avahi-publish continues to run, anounceing a service that doesn't exist.

Now, most apps could spawn avahi-publish so that it's stdin/stdout/stderr are pipes. When the parent is killed those pipes get closed, I think avahi-publish could check this and die.

[DamjanGeorgievski]

poll-ing stdin for POLLHUP should do it.. I can send a patch probably