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    SubjectRe: [ 19/49] NFSv4: Add ACCESS operation to OPEN compound
    On Sun, Jan 13, 2013 at 05:43:14PM +0000, Ben Hutchings wrote:
    > 3.2-stable review patch. If anyone has any objections, please let me know.
    >
    > ------------------
    >
    > From: Weston Andros Adamson <dros@netapp.com>
    >
    > commit 6168f62cbde8dcf4f58255794efbcdb8df603959 upstream.
    >
    > The OPEN operation has no way to differentiate an open for read and an
    > open for execution - both look like read to the server. This allowed
    > users to read files that didn't have READ access but did have EXEC access,
    > which is obviously wrong.
    >
    > This patch adds an ACCESS call to the OPEN compound to handle the
    > difference between OPENs for reading and execution. Since we're going
    > through the trouble of calling ACCESS, we check all possible access bits
    > and cache the results hopefully avoiding an ACCESS call in the future.
    >
    > Signed-off-by: Weston Andros Adamson <dros@netapp.com>
    > Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
    > [bwh: Backported to 3.2:
    > - Adjust context
    > - #include <linux/export.h> in fs/nfs/dir.c]
    > Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

    This 3.2 series lacks commit ae2bb03236fc978bdf673c19d39832500793b83c
    pointed in its changelog as fixing a regression from this one.

    --
    []'s
    Herton


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