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Date: Sat, 12 Jul 2003 21:23:17 +0100
From: Jamie Lokier <jamie@shareable.org>
To: Peter Asemann <sipeasem@immd3.informatik.uni-erlangen.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: struct siginfo member si_fd not properly filled in handler after SIGIO (2.4.x) - offending POSIX specs?
Message-ID: <20030712202317.GA10954@mail.jlokier.co.uk>
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Peter, in addition to:

    if (fcntl(fd,F_SETOWN,getpid()) == -1) {perror("fault");}

you need to write:

    if (fcntl(fd,F_SETSIG,SIGIO) == -1) {perror("fault");}

The fcntl() man page describes F_SETSIG.  You'll also need to #define
_GNU_SOURCE as F_SETSIG isn't defined otherwise.

Enjoy,
-- Jamie