Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Message-Id: <4.3.1.2.20020121174350.023bcf08@pop.ma.ultranet.com> X-Sender: lhall AT pop DOT ma DOT ultranet DOT com X-Mailer: QUALCOMM Windows Eudora Version 4.3.1 Date: Mon, 21 Jan 2002 17:45:28 -0500 To: Corinna Vinschen , cygwin From: "Larry Hall (RFK Partners, Inc)" Subject: Re: [RFD]: Changing datatypes for uid_t/gid_t In-Reply-To: <20020121192718.C13771@cygbert.vinschen.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" At 01:27 PM 1/21/2002, Corinna Vinschen wrote: >We have three possible data sizes: > >- 16 bit. Don't touch anything. Advantage: Nothing to do for us, > no compatibility problems at all. > >- 32 bit. Coincidentally equal to sizeof int and sizeof long. > Advantage: Should even work with older software which often > silently assume that a uid/gid can be stored in a int. > >- 64 bit. Advantage: Since the RIDs used in Windows are just > 32 bit, one could create uids/gids with using the upper 32 bit > of the uid/gid as a domain/server identifier, e.g. > locadmin:10000000500:544:... > fooadmin:20000000500:544:... I'd recommend going with the size that is the same as uid/gid on other UNIX systems. I guess that puts me in the 32 bit camp. Larry Hall lhall AT rfk DOT com RFK Partners, Inc. http://www.rfk.com 838 Washington Street (508) 893-9779 - RFK Office Holliston, MA 01746 (508) 893-9889 - FAX -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/