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Ignored signals & blocking system calls

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# 1  
Old 02-11-2011
Ignored signals & blocking system calls
If I explicity ignore a signal (for example, SIGALRM), and this signal is generated during a blocking system call (for example, a recvfrom() ), what happens to the system call?
Does it abort, or does it remain blocked until its end?
# 2  
Old 02-11-2011
Read man kill and man signals, some signals can be caught, ignored and others not.

If you get a signal when blocked, your process services it and then the blocked call errors out, errno=EINTR, which means try again immediately.
This User Gave Thanks to DGPickett For This Post:
hurricane
# 3  
Old 02-12-2011
Thank you for the reply!

But if so, then I've another question: does it make sense to block a signal, if the arrival of this signal aborts the system call anyway?
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