From: Christoph Hellwig <hch@infradead.org>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: hch@infradead.org, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
Date: Fri, 21 Sep 2007 15:53:56 +0100 [thread overview]
Message-ID: <20070921145356.GA16379@infradead.org> (raw)
In-Reply-To: <E1IYjoQ-0001kT-00@dorka.pomaz.szeredi.hu>
On Fri, Sep 21, 2007 at 04:48:58PM +0200, Miklos Szeredi wrote:
> Ah, OK. Well, that's what fuse would do with the above change. So
> you are basically saying, the change is OK, but we want proper
> unprivileged mounts first.
Yes, that and that it should be a mount flag, not a file_system_type
flag.
> I'm sure we don't want it by default.
>
> For example if user bind mounts / onto /home/user/myroot (with 'nodev'
> of couse), we still don't want mknod to work on that mount, for
> obvious reasons.
True, we'll have to deny it if there is any non-privilegued mount of
the backing device possible. At this point it's getting rather nasty
and I wonder whether it's really worth it..
next prev parent reply other threads:[~2007-09-21 14:55 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-21 12:23 [patch 0/5] VFS changes Miklos Szeredi
2007-09-21 12:23 ` [patch 1/5] VFS: pass open file to ->setattr() Miklos Szeredi
2007-09-21 12:23 ` [patch 2/5] VFS: pass open file to ->getattr() Miklos Szeredi
2007-09-21 18:37 ` Andreas Dilger
2007-09-21 21:07 ` Miklos Szeredi
2007-09-21 12:23 ` [patch 3/5] VFS: pass open file to ->xattr() Miklos Szeredi
2007-09-21 12:43 ` Christoph Hellwig
2007-09-21 13:00 ` Miklos Szeredi
2007-09-21 13:06 ` Christoph Hellwig
2007-09-21 13:16 ` Miklos Szeredi
2007-09-21 14:32 ` Trond Myklebust
2007-09-21 14:34 ` Christoph Hellwig
2007-09-21 14:59 ` Miklos Szeredi
2007-09-21 18:44 ` Andreas Dilger
2007-09-21 21:15 ` Miklos Szeredi
2007-09-21 14:43 ` Miklos Szeredi
2007-09-21 18:39 ` Andreas Dilger
2007-09-21 12:23 ` [patch 4/5] VFS: allow filesystems to implement atomic open+truncate Miklos Szeredi
2007-09-21 12:44 ` Christoph Hellwig
2007-09-21 13:01 ` Miklos Szeredi
2007-09-21 18:47 ` Andreas Dilger
2007-09-21 12:23 ` [patch 5/5] VFS: allow filesystem to override mknod capability checks Miklos Szeredi
2007-09-21 12:45 ` Christoph Hellwig
2007-09-21 13:10 ` Miklos Szeredi
2007-09-21 13:14 ` Christoph Hellwig
2007-09-21 13:18 ` Miklos Szeredi
2007-09-21 14:33 ` Christoph Hellwig
2007-09-21 14:48 ` Miklos Szeredi
2007-09-21 14:53 ` Christoph Hellwig [this message]
2007-09-21 15:11 ` Miklos Szeredi
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