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nfsd: return nfserr_minor_vers_mismatch when compound minorversion != 0

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Check minorversion once before decoding any operation and reject with
nfserr_minor_vers_mismatch if != 0 (this still happens in nfsd4_proc_compound).
In this case return a zero length resultdata array as required by RFC3530.

minorversion 1 processing will have its own vector of decoders.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Benny Halevy 2008-07-02 11:13:18 +03:00 committed by J. Bruce Fields
parent 07cad1d2a4
commit 30cff1ffff
1 changed files with 3 additions and 7 deletions
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10
fs/nfsd/nfs4xdr.c
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@ -1019,6 +1019,9 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
}
}
if (argp->minorversion != 0)
argp->opcnt = 0;
for (i = 0; i < argp->opcnt; i++) {
op = &argp->ops[i];
op->replay = NULL;
@ -1057,13 +1060,6 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
op->opnum = ntohl(*argp->p++);
switch (op->opnum) {
case 2: /* Reserved operation */
op->opnum = OP_ILLEGAL;
if (argp->minorversion == 0)
op->status = nfserr_op_illegal;
else
op->status = nfserr_minor_vers_mismatch;
break;
case OP_ACCESS:
op->status = nfsd4_decode_access(argp, &op->u.access);
break;