From: Al Viro <viro@ftp.linux.org.uk>
To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: Move across mount,sb
Date: Thu, 15 Mar 2007 01:46:55 +0000 [thread overview]
Message-ID: <20070315014655.GO4095@ftp.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.61.0703150211500.1199@yvahk01.tjqt.qr>
On Thu, Mar 15, 2007 at 02:20:25AM +0100, Jan Engelhardt wrote:
> Why is EXDEV returned when _vfs mountpoints_ are crossed? Should not it
> be more like the following?
>
> error = -EXDEV;
> if (oldnd.mnt->mnt_sb != newnd.mnt->mnt_sb)
> goto exit2;
>
No. This is absolutely deliberate - mountpoint creates a boundary and
such boundaries are very useful for restricting modifications of filesystem.
IOW, it's not a bug and it applies to other operations as well (link(), for
example).
prev parent reply other threads:[~2007-03-15 1:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-15 1:20 Move across mount,sb Jan Engelhardt
2007-03-15 1:46 ` Al Viro [this message]
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