Benny Amorsen writes:
Sam Varshavchik <mrsam(a)courier-mta.com> writes:
> It took me a while to figure out why my daemon kept breaking all the
> time, when it couldn't stat its /proc/self/exe any more.
Perhaps it's just me, but why would the daemon stat /proc/self/exe? I
presume prelink writes a new file and renames into place as a proper
Unix program should, which still leaves the original program intact on
disk until the last open file descriptor referring to it is gone.
A means for authenticating a filesystem domain socket's peer. Receive the
peer's credentials, then check /proc/pid/exe and /proc/self/exe. If they're
same, the daemon is talking to another instance of itself.