From owner-freebsd-hackers  Mon Feb 17 08:12:47 1997
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To: hackers@freebsd.org
Subject: Luke Mewburn: const-ness of select() timeout arg
Date: Mon, 17 Feb 1997 09:09:51 -0700
From: Warner Losh <imp@village.org>
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Saw this in netbsd-kern.  Just thought I'd pass it along here.
I've been telling folks in Linux for 4 years that the timeval is const
:-)...

Warner

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Message-ID: <199702162338.KAA11206@coola.off.connect.com.au>
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To: tech-kern@NetBSD.ORG
Subject: const-ness of select() timeout arg
Date: Mon, 17 Feb 1997 10:38:41 +1100
From: Luke Mewburn <lukem@connect.com.au>
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I saw this on USENET, and thought it might be relevant.
It is about POSIX 1.g, and its definition of select() to have
a "const" timeout arg.

I think I read on one of our mailing lists that NetBSD
doesn't depend upon a non-const arg, however our Linux
emulation may.

In any case, something that should be investigated?

===

> From: rstevens@noao.edu (W. Richard Stevens)
> Newsgroups: comp.unix.programmer
> Subject: Re: select call timeout argument
> Date: 13 Feb 1997 13:57:50 GMT
> Organization: National Optical Astronomy Observatories, Tucson, AZ, USA
> Lines: 5

Posix.1g, which is standardizing select() and poll(), add the "const"
qualifier to the "struct timeval *".  So any system that does update
this structure today, will have to change.

===


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