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From: libes@nbs-amrf.UUCP (Don Libes)
Newsgroups: net.unix-wizards
Subject: Re: Can't seem to generate SIGIO.  What's the trick?
Message-ID: <90@nbs-amrf.UUCP>
Date: Mon, 9-Dec-85 18:40:04 EST
Article-I.D.: nbs-amrf.90
Posted: Mon Dec  9 18:40:04 1985
Date-Received: Wed, 11-Dec-85 10:14:29 EST
References: <86@nbs-amrf.UUCP>
Distribution: net
Organization: National Bureau of Standards
Lines: 17

> Ok, I give up.  What's the trick to getting a SIGIO signal?

Thanks very much to Bill Shannon (sun!shannon) for giving me the missing
piece.  His reply was:

	You need to do

		fcntl(fd, F_SETOWN, getpid());

	to set the owner of the fd to you so you'll be the one to get
	the SIGIO.

I refuse to admit how much time I spent reading and rereading the manual
looking for the solution.  I think I'll mark the spot in my manual where
this is so clearly documented with a large ax.

Don Libes       {seismo,umcp-cs}!nbs-amrf!libes