Hi,
I'm not sure on the meaning of the following excerpt from
siginterrupt(3), in particular the last sentence:
"If the flag argument is false (0), then system
calls will be restarted if interrupted by the specified signal sig. This is
the default behavior in Linux. However, when a new signal handler is
specified with the signal(2) function, the system call is interrupted by
default."
I interpret the second sentence ("This is the default behavior in
Linux") as meaning that signal(2) by default is equivalent to
sigaction(2) with SA_RESTART set. The last sentence seems to mean the
opposite, which is untrue in the default case. So, what was the intent
of that sentence?
I came across this on a question at StackOverflow:
http://stackoverflow.com/questions/5929309/recvfrom-timeout-with-alarm/5929386#5929386
the "wrongness" of the manpage was first noticed by Zachary Weinberg.
Regards,
--
ninjalj
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