2011/2/21 Christoph Hellwig <h...@infradead.org>: > On Mon, Feb 21, 2011 at 09:26:32AM +0100, Marco Stornelli wrote: >> From: Marco Stornelli <marco.storne...@gmail.com> >> >> All fs must check for the immutable flag in their fallocate callback. >> It's possible to have a race condition in this scenario: an application >> open a file in read/write and it does something, meanwhile root set the >> immutable flag on the file, the application at that point can call >> fallocate with success. Only Ocfs2 check for the immutable flag at the >> moment. > > Please add the check in fs/open.c:do_fallocate() so that it covers all > filesystems. > >
The check should be done after the fs got the inode mutex lock. Marco -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
