NFS: Fix nfs4_verifier memory alignment

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Clean up due to code review.

The nfs4_verifier's data field is not guaranteed to be u32-aligned.
Casting an array of chars to a u32 * is considered generally
hazardous.

Fix this by using a __be32 array to generate a verifier's contents,
and then byte-copy the contents into the verifier field.  The contents
of a verifier, for all intents and purposes, are opaque bytes.  Only
local code that generates a verifier need know the actual content and
format.  Everyone else compares the full byte array for exact
equality.

Also, sizeof(nfs4_verifer) is the size of the in-core verifier data
structure, but NFS4_VERIFIER_SIZE is the number of octets in an XDR'd
verifier.  The two are not interchangeable, even if they happen to
have the same value.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

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This commit is contained in:

Chuck Lever 2012-03-02 17:14:31 -05:00 • committed by Trond Myklebust

parent ab19b4813f

commit cd93710e8d

2 changed files with 39 additions and 33 deletions

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32

fs/nfs/nfs4proc.c

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40

fs/nfs/nfs4xdr.c

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