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Date: Sat, 2 Nov 2002 23:10:16 -0500 (EST)
From: Alexander Viro <viro@math.psu.edu>
To: Dax Kelson <dax@gurulabs.com>
cc: Linus Torvalds <torvalds@transmeta.com>,
       Olaf Dietsche <olaf.dietsche#list.linux-kernel@t-online.de>,
       "Theodore Ts'o" <tytso@mit.edu>, Rusty Russell <rusty@rustcorp.com.au>,
       "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
       "davej@suse.de" <davej@suse.de>
Subject: Re: Filesystem Capabilities in 2.6?
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On Sat, 2 Nov 2002, Dax Kelson wrote:

> On Sat, 2 Nov 2002, Alexander Viro wrote:
> 
> > 	<shrug> that can be done without doing anything to filesystem.
> > Namely, turn current "nosuid" of vfsmount into a mask of capabilities.
> > Then use bindings instead of links.  *Note* - binary _is_ marked suid,
> > mask tells which capabilities _not_ to gain.  It's OK - attempt to
> > link(2) to the thing using binding will see that oldname and newname
> > are within different vfsmounts, so instead of link to suid-root binary
> > you get -EXDEV.
> 
> Any thoughts on how /usr/bin/(rpm|dpkg) copes with setting up the binding
> when installing a package?

<shrug> for example, /etc/init.d/foo-bindings.sh and update-rc.d invoked
in post-install.  Hell knows what RPM equivalent is, but there definitely
is one...

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