From: viro@parcelfarce.linux.theplanet.co.uk
To: Mike Waychison <Michael.Waychison@Sun.COM>
Cc: Ram Pai <linuxram@us.ibm.com>, linux-kernel@vger.kernel.org
Subject: Re: per-process namespace?
Date: Tue, 29 Jun 2004 23:10:25 +0100 [thread overview]
Message-ID: <20040629221025.GI12308@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <40E1DABD.9000202@sun.com>
On Tue, Jun 29, 2004 at 05:10:21PM -0400, Mike Waychison wrote:
> Another caveat is that the current system disallows you from doing any
> mount/umount's in another namespace (bogus security?).
Nothing bogus here - namespace boundary _IS_ a trust boundary and that's
exactly the diference between symlinks and bindings - symlink attacks
are possible exactly because they allow you to modify visible tree topology
for other users.
Note that sharing parts of namespace (which is basically what automounter
wants and what we do not have yet) is deliberate act of trust - same as
having a part of your address space shared with other process.
next prev parent reply other threads:[~2004-06-29 22:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-29 18:47 Ram Pai
2004-06-29 21:10 ` Mike Waychison
2004-06-29 22:10 ` viro [this message]
2004-06-29 23:22 ` Ram Pai
2004-06-30 13:15 ` Mike Waychison
2004-06-30 18:15 ` Ram Pai
2004-07-01 0:14 ` Serge E. Hallyn
2004-07-01 1:32 ` Ram Pai
2004-06-29 22:25 ` Ram Pai
2004-06-30 13:30 ` Mike Waychison
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040629221025.GI12308@parcelfarce.linux.theplanet.co.uk \
--to=viro@parcelfarce.linux.theplanet.co.uk \
--cc=Michael.Waychison@Sun.COM \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxram@us.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome