Messages in this thread | | | Date | Sat, 14 Jul 2007 09:41:45 +0200 | From | "Michael Kerrisk" <> | Subject | signalfd() semantics after execve() |
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Davide,
I'm working on the signalfd(2) man page, and I've come acorss some puzzling behaviour...
What are the intended semantics of a signalfd file descriptor after an execve()?
As far as I can work out, after an execve() the file descriptor is still available, but reads from it always return 0, even if:
a) there were signals pending before the execve(). However, sigpending() shows the signal as pending, and the signal can be accepted using sigwaitinfo().
b) we generate a signal after the execve().
Is this intended behavior (the "orphaned sighand" condition mentioned in the draft man page you sent me?)? Is it a bug?
Cheers,
Michael
-- Michael Kerrisk maintainer of Linux man pages Sections 2, 3, 4, 5, and 7
Want to help with man page maintenance? Grab the latest tarball at http://www.kernel.org/pub/linux/docs/manpages , read the HOWTOHELP file and grep the source files for 'FIXME'.
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