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So if it doesn't determine whether my function is sync-safe or not, the function should run without many problems most of the time (as you see, the file is accessed nowhere inside the program, a...

So you claim that if I make a sync-safe function using the above sync-safe functions, then the handler will be executed? And if this is true then how does the system determine:

a) Where in the...

I just downloaded the source code of ettercap-graphical (a well know application) and it doesn't use async-safe functions in the code (fprintf is being used, user interface is being normally shut...

Thanks a lot for your answer. I cannot understand anything from the phrase
"POSIX.1-2004 (also known as POSIX.1-2001 Technical Corrigendum 2) requires an implementation to guarantee that the...

I am having exactly the same problem with https://www.unix.com/programming/129264-application-cleanup-during-linux-shutdown.html but the thread is old and closed. The only difference is that I use...