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authorBenny Halevy <bhalevy@panasas.com>2008-07-02 11:14:22 +0300
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-07-02 15:58:21 -0400
commitf2feb96bc3d18e50cab7de9eab142f99d91aa5f6 (patch)
treed4e665a8208f3fb18aa7b9346c0dcf79eb2060a7 /fs/nfsd
parent3c375c6f3a809d0d999d6dc933634f0b97ed7ae9 (diff)
downloadlinux-f2feb96bc3d18e50cab7de9eab142f99d91aa5f6.tar.bz2
nfsd: nfs4 minorversion decoder vectors
Have separate vectors of operation decoders for each minorversion. Obsolete ops in newer minorversions have default implementation returning nfserr_opnotsupp. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4xdr.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 653951c73e31..a40bec53fa66 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1039,11 +1039,21 @@ static nfsd4_dec nfsd4_dec_ops[] = {
[OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_release_lockowner,
};
+struct nfsd4_minorversion_ops {
+ nfsd4_dec *decoders;
+ int nops;
+};
+
+static struct nfsd4_minorversion_ops nfsd4_minorversion[] = {
+ [0] { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) },
+};
+
static __be32
nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
{
DECODE_HEAD;
struct nfsd4_op *op;
+ struct nfsd4_minorversion_ops *ops;
int i;
/*
@@ -1073,9 +1083,10 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
}
}
- if (argp->minorversion != 0)
+ if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion))
argp->opcnt = 0;
+ ops = &nfsd4_minorversion[argp->minorversion];
for (i = 0; i < argp->opcnt; i++) {
op = &argp->ops[i];
op->replay = NULL;
@@ -1113,8 +1124,8 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
}
op->opnum = ntohl(*argp->p++);
- if (op->opnum >= OP_ACCESS && op->opnum < ARRAY_SIZE(nfsd4_dec_ops))
- op->status = nfsd4_dec_ops[op->opnum](argp, &op->u);
+ if (op->opnum >= OP_ACCESS && op->opnum < ops->nops)
+ op->status = ops->decoders[op->opnum](argp, &op->u);
else {
op->opnum = OP_ILLEGAL;
op->status = nfserr_op_illegal;