Re: [PATCH v3][RESEND] Check for immutable/append flag in fallocatepath

From: Marco Stornelli
Date: Wed Mar 09 2011 - 14:47:57 EST


Il 05/03/2011 11:10, Marco Stornelli ha scritto:
> From: Marco Stornelli <marco.stornelli@xxxxxxxxx>
>
> In the fallocate path the kernel doesn't check for the immutable/append
> flag. 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. In addition, we don't allow to do any
> unreserve operation on an append only file but only the reserve one.
>
> Signed-off-by: Marco Stornelli <marco.stornelli@xxxxxxxxx>

Al, can you apply this patch please? I add Greg in cc, because maybe he
could be interested about stable tree.

Marco
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