Date: Wed, 26 Mar 2003 08:13:07 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: questions@freebsd.org Subject: Re: File owner name not updated. Message-ID: <20030326081307.GC5568@happy-idiot-talk.infracaninophi> In-Reply-To: <D4A3ED06-5F5E-11D7-95E4-000A959CEE6A@pursued-with.net> References: <20030326072922.GA5568@happy-idiot-talk.infracaninophi> <D4A3ED06-5F5E-11D7-95E4-000A959CEE6A@pursued-with.net>
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On Tue, Mar 25, 2003 at 11:44:52PM -0800, Kevin Stevens wrote:
>=20
> On Tuesday, Mar 25, 2003, at 23:29 US/Pacific, Matthew Seaman wrote:
>=20
> >Two things occur to me:
> >
> > i) Did root use vipw(8) to edit the passwd database, or otherwise
> > run:
> >
> > # cap_mkdb /etc/master.passwd
> >
> > when the UID was changed? It's the value in the hashed
> > database cap_mkdb(1) builds that is used by the system.
> > Updating that should have instantaneous effect.
>=20
> Just tried running that after creating a dummy user and changing his=20
> uid from 1005 to 1010. No change.
>=20
> >The problem is not with the ls(1) command per se. It's the underlying
> >system library functions such as getpwuid(3) which do the translation
> >between numeric UIDs and usernames that are the seat of the problem.
> >You can see that by running some other command that uses getpwuid(3),=20
> >eg:
> >
> > % perl -e 'print scalar getpwuid(503), "\n";'
>=20
> bash-2.05b# perl -e 'print scalar getpwuid(1010), "\n";'
> fred
> bash-2.05b# perl -e 'print scalar getpwuid(1005), "\n";'
> fred
>=20
> bash-2.05b# grep fred /etc/master.passwd
> fred:*:1010:1005:User &:/home/fred:/bin/sh
Interesting. I can reproduce exactly what you're seeing:
% sudo pw user add -n fred -u 1010 -m=20
% id -P fred
fred:*:1010:1010::0:0:User &:/home/fred:/bin/sh
% ls -lad /home/fred=20
drwxr-xr-x 2 fred fred 512 Mar 26 08:01 /home/fred/
% sudo pw user mod fred -u 1005
% id -P fred=20
fred:*:1005:1010::0:0:User &:/home/fred:/bin/sh
% ls -lad /home/fred=20
drwxr-xr-x 2 fred fred 512 Mar 26 08:01 /home/fred/
% id -P 1005
fred:*:1005:1010::0:0:User &:/home/fred:/bin/sh
% id -P 1010
fred:*:1010:1010::0:0:User &:/home/fred:/bin/sh
% sudo grep 1010 /etc/master.passwd=20
fred:*:1005:1010::0:0:User &:/home/fred:/bin/sh
However, running pwd_mkdb(8) seems to cure the problem very effectively:
% sudo pwd_mkdb /etc/master.passwd=20
% id -P fred=20
fred:*:1005:1010::0:0:User &:/home/fred:/bin/sh
% id -P 1005=20
fred:*:1005:1010::0:0:User &:/home/fred:/bin/sh
% id -P 1010
id: 1010: no such user
% ls -lad /home/fred
drwxr-xr-x 2 1010 fred 512 Mar 26 08:01 /home/fred/
=20
Looks like a bug to me...
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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