How come /sbin/nologin is in /etc/shells contradicting the man page?
Matthias Clasen
mclasen at redhat.com
Tue May 22 18:05:35 UTC 2007
On Tue, 2007-05-22 at 14:03 -0400, Daniel J Walsh wrote:
> >
> I guess a better question would be how to tell the difference between a
> valid "user" and a "service" on the system. Currently SELinux checks if
> uid < 500 (GID_MIN from /etc/login.defs) or a shell from /etc/shells -
> /sbin/nologin.
>
> This is used to make sure the labeling of the home directory is done
> properly.
The same issue has come up in gdm recently, where a database user showed
up in the user list, because it was > 500 and had a "valid shell" (which
was /sbin/nologin). We have changed gdm to not consider nologin a valid
shell even if it is in /etc/shells.
This is all a bit of an undefined mess of traditional behaviours...
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