Messages in this thread | | | Date | Tue, 19 May 2009 08:13:11 +0800 | From | Eugene Teo <> | Subject | Re: [PATCH] nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission. |
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Frank Filz wrote: > Sorry for the resend, got lkml address wrong... > > The problem is that permission checking is skipped if atomic open is > possible, but when exec opens a file, it just opens it O_READONLY which > means EXEC permission will not be checked at that time. > > This problem is observed by the following sequence (executed as root): > > mount -t nfs4 server:/ /mnt4 > echo "ls" >/mnt4/foo > chmod 744 /mnt4/foo > su guest -c "mnt4/foo" > > Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com>
Tested-by: Eugene Teo <eugeneteo@kernel.sg>
Thanks, Eugene
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