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
Message-ID:	<3E2EB12D.A2A9DD32@ieee.org>
Date:	Wed, 22 Jan 2003 09:56:45 -0500
From:	"Pierre A. Humblet" <Pierre DOT Humblet AT ieee DOT org>
X-Accept-Language:	en,pdf
MIME-Version:	1.0
To:	cygwin-developers AT cygwin DOT com
Subject:	Re: setregid() and setreuid() implementation proposal
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> <20030122112419 DOT GD29236 AT cygbert DOT vinschen DOT de>

Corinna Vinschen wrote:
>
> > But it's not *that* simple:
> >
> > - sec_acl.cc is still using __aclent16_t instead of __aclent32_t.

Those two structures have the same size and the same field offsets.
Would you thumb your nose at a conversion of the style

whatever 
aclXXX( __aclent16_t * acl)
{
  __aclent32_t * acl32 = acl;
  acl32->a_id &= 0x0000FFFF;
  return (whatever) aclXXX32(acl32);
}
or would you insist on alloc and copying of everything
before and after calling the aclXXX32 function?
 
> 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 :-(((

:-(((

Pierre

- Raw text -