Subject: Re: postinstall fixes failed: gid sendmail uid
To: Pavel Cahyna <>
From: Manuel Bouyer <>
List: current-users
Date: 11/19/2005 18:49:48
On Sat, Nov 19, 2005 at 06:44:12PM +0100, Pavel Cahyna wrote:
> > I think it's just "nobody implemented it yet". It's not that easy, because
> > you need to be carefull to not use an exising uid.
> Those uids are not fixed?

they're fixed in the provided master.passwd, but in case of upgrade,
the user may already have added a user or a group with this uid/gid.

> What uids/gids were given to files owned by those
> special users and groups when base.tgz was untarred?

I'm not sure tar hardcode uid/gid, I think it uses user/group names instead
(but this is from memory and I didn't test, I may be wrong here).

> (there also is software which has a special uid selected at compile
> time. For example the exim MTA. For those, "not using an existing uid" is
> not sufficient. I don't know if any such programs are present in the base
> system, so I am a bit afraid about choosing some random UID.)

I don't think it's the case for softwares in the base system.

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference