Mailing-List:	contact cygwin-developers-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-developers-subscribe AT cygwin DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin-developers/>
List-Post:	<mailto:cygwin-developers AT cygwin DOT com>
List-Help:	<mailto:cygwin-developers-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-developers-owner AT cygwin DOT com
Delivered-To:	mailing list cygwin-developers AT cygwin DOT com
Date:	Wed, 22 Jan 2003 12:24:19 +0100
From:	Corinna Vinschen <vinschen AT redhat DOT com>
To:	cygwin-developers AT cygwin DOT com
Subject:	Re: setregid() and setreuid() implementation proposal
Message-ID:	<20030122112419.GD29236@cygbert.vinschen.de>
Reply-To:	cygwin-developers AT cygwin DOT com
Mail-Followup-To:	cygwin-developers AT cygwin DOT com
References:	<20030117120131 DOT GF1142 AT cygbert DOT vinschen DOT de> <20030116190119 DOT GD820 AT tishler DOT net> <20030117120131 DOT GF1142 AT cygbert DOT vinschen DOT de> <3 DOT 0 DOT 5 DOT 32 DOT 20030121202701 DOT 007db4f0 AT mail DOT attbi DOT com> <20030122014007 DOT GA23365 AT redhat DOT com> <20030122102919 DOT GA29236 AT cygbert DOT vinschen DOT de>
Mime-Version:	1.0
In-Reply-To:	<20030122102919.GA29236@cygbert.vinschen.de>
User-Agent:	Mutt/1.4i

On Wed, Jan 22, 2003 at 11:29:19AM +0100, Corinna Vinschen wrote:
> On Tue, Jan 21, 2003 at 08:40:07PM -0500, Christopher Faylor wrote:
> > On Tue, Jan 21, 2003 at 08:27:01PM -0500, Pierre A. Humblet wrote:
> > >Wouldn't this (post 1.3.19) instead be the right time to kick in the 
> > >uid32 code? Corinna had indicated in the fall that it was "just" (my
> > >words) a matter of introducing a few macros to split that change from 
> > >the offset64 stuff?
> 
> Hmm, I was trying to avoid that but I'm not getting to change newlib
> for the necessary fpos_t changes.  And, honestly, I hate digging in
> newlib. 
> 
> But it's not *that* simple:
> 
> - sec_acl.cc is still using __aclent16_t instead of __aclent32_t.
> 
> - Create a new define, say __CYGWIN_USE_32BIT_IDS__
> 
> - Set this define in some Cygwin header (cygwin/types.h?) or
>   in gcc's specs file.
> 
> - Change Cygwin's Makefile so that new applications are linked
>   against the new functions (same way as for regcomp/posix_regcomp
>   et al)

Ooops!  Another really *really* big problem:  struct stat is using
uids and gids as well.  Using 32 bit ids with 32 bit offset stuff
would require to introduce a new struct __stat32_2 plus access
functions.  We would have to support three variations of struct
stat then :-(((

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

- Raw text -