Unfortunately, I tried these with no luck. I added the extra signals and added the while(1) just to be certain my application wouldn't exit before logout killed it.
Interesting thought... but yes, I am fully logged out well before 30 seconds. I just run the app:
% ./test &
...and then logout. From start to finish is only about 10 seconds.
If the file system...
I'm trying to do some cleanup (write open files) when Linux shuts down. I thought the right method would be to trap SIGTERM and do the necessary processing. Here's my sample code: