Date: Sun, 7 Mar 1999 20:52:21 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: brian@Awfulhak.org (Brian Somers) Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: pipe(2) Message-ID: <199903072052.NAA28076@usr04.primenet.com> In-Reply-To: <199903070234.CAA12643@keep.lan.Awfulhak.org> from "Brian Somers" at Mar 7, 99 02:34:23 am
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> Should pipe(2) be a bit stronger about what's ``conventional'' and
> mention that two uni-directional descriptors are returned by most
> operating systems ? I've been stung twice recently because I've
> assumed that the descriptors are bidirectional :-(
>
> If there are no objections, I'll update the man page:
[ ... ]
> +.Sh STANDARDS
> +POSIX does not require that each descriptor is bidirectional. For
> +portability reasons, unidirectional descriptors should be assumed.
> .Sh HISTORY
In addition to the statement:
The bidirectional nature of this implementation of pipes is not portable
to older systems, so it is recommended to use the convention for using
the endpoints in the traditional manner when using a pipe in one direc-
tion.
I guess?
Terry Lambert
terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.
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