mirror of https://github.com/mkerrisk/man-pages
signal.7: Add reference to seccomp_unotify(2)
The seccomp user-space notification feature can cause changes in the semantics of SA_RESTART with respect to system calls that would never normally be restarted. Point the reader to the page that provide further details. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -857,6 +857,15 @@ The
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.BR sleep (3)
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function is also never restarted if interrupted by a handler,
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but gives a success return: the number of seconds remaining to sleep.
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.PP
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In certain circumstances, the
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.BR seccomp (2)
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user-space notification feature can lead to restarting of system calls
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that would otherwise never be restarted by
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.BR SA_RESTART ;
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for details, see
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.BR seccomp_unotify (2).
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.\"
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.SS Interruption of system calls and library functions by stop signals
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On Linux, even in the absence of signal handlers,
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certain blocking interfaces can fail with the error
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