Question

I am writing daemon application for Debian Sid. It works perfectly most of the times, but dies silently after i put my laptop to suspend (or hibernate). So i have a couple of questions:

1. What should I Google for solutions?
2. Maybe, you have any ideas what is going on?

Answer 1

Daemon’s loop was on blocking read call, and suspend (hibernate) interrupts it. So, should check errnos more accurately.
Fixed by adding:

if ( errno == EINTR ) continue;