[Pkg-sysvinit-devel] Bug#660862: initscripts: symlink /etc/nologin points to non existent file:

[Roger Leigh]

On Fri, Nov 23, 2012 at 10:05:07PM +0000, Roger Leigh wrote:
> On Fri, Nov 23, 2012 at 03:49:15PM +0100, Carlos Alberto Lopez Perez wrote:
> > Such symlink was created by an upgrade of the package initscripts on a system running Debian/Squeeze.
> > 
> > 
> > Here is the relevant part:
> > 
> > 
> > $ grep -C3 /etc/nologin sysvinit-2.88dsf/debian/initscripts.postinst
> > # Set up nologin symlink so that dynamic-login-disabling will work
> > # (when DELAYLOGIN is set to "yes")
> > #
> > if [ ! -L /etc/nologin ] && [ ! -e /etc/nologin ]
> > then
> > 	rm -f /var/lib/initscripts/nologin
> > 	ln -s /var/lib/initscripts/nologin /etc/nologin
> > fi
> > 
> > I don't know why the postinst script does that.  Can somebody explain?
> 
> Looking at the history in git, this was done for the migration
> of /etc/nologin to /var/lib/initscripts/nologin; I presume at
> least.  It would have been nicer to have a version check here.
> 
> Unless there's a reason for keeping it (and I can't see one
> with a short investigation), I think this logic may be safely
> removed.  It might be a bit late to do this for wheezy, but
> definitely fixable for jessie.

Looking at this a bit more closely, this should probably be moved
to /run/nologin, since it's the last writable filesystem and unlike
/etc and /var/lib/initscripts, will be present and writable until
the system is halted.  shutdown(8) also hardcodes /etc/nologin, and
this should also be switched to use /run/nologin.


Regards,
Roger

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