Re: Restoring users
On 4/29/05, Laurent CARON <lcaron@apartia.fr> wrote:
> Alexander Toresson a écrit :
>
> >On 4/29/05, Laurent CARON <lcaron@apartia.fr> wrote:
> >
> >
> >>Alexander Toresson a écrit :
> >>
> >>
> >>
> >>>I got a tip from a linux security freak that to increase the security
> >>>of my box, I should delete all unnessecary users and groups. I did
> >>>that, however, I seem to have deleted a little too much.
> >>>
> >>>exim4-config complains that user uucp does not exist and thus doesn't
> >>>configure itself, and this makes bunch of other packages not configure
> >>>themselves.
> >>>
> >>>I've tried using adduser --system to add it again, but it gives this
> >>>
> >>>
> >>error:
> >>
> >>
> >>>useradd: unable to open password file
> >>>adduser: `/usr/sbin/useradd -d /home/uucp -g nogroup -s /bin/false -u
> >>>106 uucp' returned error code 1. Aborting.
> >>>
> >>>I've doing tried doing dpkg-reconfigure base-passwd, but that gives
> >>>the following output:
> >>>
> >>>update-passwd has found some differences between your system accounts
> >>>and the current Debian defaults. It is advisable to allow update-passwd
> >>>to change your system; without those changes some packages might not
> work
> >>>correctly. For more documentation on the Debian account policies please
> >>>see /usr/share/doc/base-passwd/README.
> >>>
> >>>The list of proposed changes is:
> >>>
> >>>Adding group "uucp" (10)
> >>>Adding group "proxy" (13)
> >>>Adding group "fax" (21)
> >>>Adding group "tape" (26)
> >>>Adding group "dip" (30)
> >>>Adding group "operator" (37)
> >>>Adding user "sync" (4)
> >>>Adding user "uucp" (10)
> >>>Adding user "proxy" (13)
> >>>Adding user "nobody" (65534)
> >>>Would commit 10 changes
> >>>
> >>>It is highly recommended that you allow update-passwd to make these
> >>>
> >>>
> >>changes
> >>
> >>
> >>>(a backup file of modified files is made with the extension .org so you
> >>>
> >>>
> >>can
> >>
> >>
> >>>always restore the current settings).
> >>>
> >>>May I update your system? [Y/n] Y
> >>>Okay, I am going to make the necessary updates now
> >>>Adding group "uucp" (10)
> >>>Adding group "proxy" (13)
> >>>Adding group "fax" (21)
> >>>Adding group "tape" (26)
> >>>Adding group "dip" (30)
> >>>Adding group "operator" (37)
> >>>Adding user "sync" (4)
> >>>Adding user "uucp" (10)
> >>>Adding user "proxy" (13)
> >>>Adding user "nobody" (65534)
> >>>10 changes have been made, rewriting files
> >>>Writing passwd-file to /etc/passwd
> >>>Error making backupfile /etc/passwd.org: Operation not permitted
> >>>
> >>>How can it not have access to write to that file? I run as root!
> >>>
> >>>Regards, Alexander Toresson
> >>>
> >>>
> >>>
> >>>
> >>>
> >>error on FS
> >>
> >>FS mounted read only
> >>
> >>....?
> >>
> >>
> >>
> >
> >Nope, it's read write. And fsck reports no errors. And I can create
> >easily create that file myself without any problem. And I don't get
> >anything written in syslog/klog.
> >
> >Regards, Alexander Toresson
> >
> >
> >
> are you able to write in /etc/passwd and /etc/passwd.org ??
>
Hmmm... I'm able to write to /etc/passwd.org, but not to /etc/passwd.
That's strange.
# ls -al /etc/passwd
-rw-r--r-- 1 root root 946 2005-04-08 23:19 /etc/passwd
I have no idea why I can't write to it. Maybe a program is locking the
file, but I dunno how to check that.
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