From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Jan Kara <jack@suse.cz>
Cc: "J. Bruce Fields" <bfields@fieldses.org>,
"Serge E. Hallyn" <serue@us.ibm.com>, Pavel Machek <pavel@ucw.cz>,
kernel list <linux-kernel@vger.kernel.org>,
linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk,
jamie@shareable.org
Subject: Re: symlinks with permissions
Date: Mon, 26 Oct 2009 13:57:49 -0400 [thread overview]
Message-ID: <1256579869.8576.7.camel@heimdal.trondhjem.org> (raw)
In-Reply-To: <20091026174631.GD7233@duck.suse.cz>
On Mon, 2009-10-26 at 18:46 +0100, Jan Kara wrote:
> That's what I'd think as well but it does not as I've just learned and
> tested :) proc_pid_follow_link actually directly gives a dentry of the
> target file without checking permissions on the way.
>
> Honza
I seem to remember that is deliberate, the point being that a symlink
in /proc/*/fd/ may contain a path that refers to a private namespace.
Cheers
Trond
next prev parent reply other threads:[~2009-10-26 17:57 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-25 6:29 symlinks with permissions Pavel Machek
2009-10-26 16:31 ` Jan Kara
2009-10-26 16:57 ` Serge E. Hallyn
2009-10-26 17:36 ` J. Bruce Fields
2009-10-26 17:46 ` Jan Kara
2009-10-26 17:57 ` Trond Myklebust [this message]
2009-10-25 9:36 ` Pavel Machek
2009-10-26 18:22 ` Trond Myklebust
2009-10-27 8:11 ` Pavel Machek
2009-10-27 10:27 ` Jamie Lokier
2009-10-26 18:35 ` J. Bruce Fields
2009-10-28 4:15 ` Eric W. Biederman
2009-10-28 8:16 ` Pavel Machek
2009-10-28 11:25 ` Eric W. Biederman
2009-10-28 21:03 ` Pavel Machek
2009-10-29 2:20 ` Eric W. Biederman
2009-10-29 11:03 ` Pavel Machek
2009-10-29 16:23 ` Eric W. Biederman
2009-10-30 18:35 ` Pavel Machek
2009-10-30 20:37 ` Nick Bowler
2009-10-30 23:03 ` Eric W. Biederman
2009-10-31 2:30 ` Jamie Lokier
2009-10-28 16:34 ` Casey Schaufler
2009-10-28 19:44 ` Jamie Lokier
2009-10-28 21:06 ` Pavel Machek
2009-10-26 18:02 ` J. Bruce Fields
2009-10-26 17:57 ` Serge E. Hallyn
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=1256579869.8576.7.camel@heimdal.trondhjem.org \
--to=trond.myklebust@fys.uio.no \
--cc=bfields@fieldses.org \
--cc=jack@suse.cz \
--cc=jamie@shareable.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pavel@ucw.cz \
--cc=serue@us.ibm.com \
--cc=viro@zeniv.linux.org.uk \
/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;
as well as URLs for NNTP newsgroup(s).