Date: Tue, 26 Feb 2002 12:08:59 +1100 (EST) From: Bruce Evans <bde@zeta.org.au> To: David Malone <dwmalone@maths.tcd.ie> Cc: "Andrey A. Chernov" <ache@nagual.pp.ru>, Sheldon Hearn <sheldonh@starjuice.net>, Maxim Sobolev <sobomax@FreeBSD.org>, <cvs-committers@FreeBSD.org>, <cvs-all@FreeBSD.org>, <hackers@FreeBSD.org> Subject: Re: <sys/types.h> or not <sys/types.h>? [Was: cvs commit: src/include grp.h] Message-ID: <20020226115508.T42756-100000@gamplex.bde.org> In-Reply-To: <20020225144003.GA50785@walton.maths.tcd.ie>
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On Mon, 25 Feb 2002, David Malone wrote:
> I note that in the footnotes for getgrgid, in the section for "issue
> 6" of the standard:
>
> The requirement to include <sys/types.h> has been removed.
> Although <sys/types.h> was required for conforming
> implementations of previous POSIX specifications, it was
> not required for UNIX applications.
>
> Curiously, this seems to say the opposit of what you actually see
> in SUSv2, as it lists <sys/types.h> as a prerequisit.
This is probably because SUSv2 is almost as old as POSIX.1-1996 (which
has the prerequisite).
BTW, <unistd.h> has the same prerequisite, but our version of <unistd.h>
is polluted with an include of <sys.types.h>. Nevertheless, we fixed
several man pages to document the old-POSIX requirements. E.g.:
RCS file: /home/ncvs/src/lib/libc/sys/fork.2,v
Working file: fork.2
head: 1.14
...
----------------------------
revision 1.7
date: 1998/01/11 16:51:49; author: alex; state: Exp; lines: +4 -1
branches: 1.7.2;
Add <sys/types.h> to synopsis.
Correct a grammatical error.
Add cross-reference to setrlimit(2).
Obtained from: OpenBSD
----------------------------
ISTR that most of the fixes came from OpenBSD. I haven't attempted to
fix unistd.h since its pollution is old. I only police new pollution
and must have been asleep when we broke several man pages to undocument
the old-POSIX requirements. E.g.:
RCS file: /home/ncvs/src/lib/libc/sys/setsid.2,v
Working file: setsid.2
head: 1.12
...
----------------------------
revision 1.6
date: 1997/04/08 10:43:47; author: peter; state: Exp; lines: +1 -1
setsid is declared in <unistd.h>, which is self sufficient (doesn't need
prior <sys/types.h>)
Fixes PR#3229, from Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
----------------------------
Bruce
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