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| author | Peng Tao <bergwolf@gmail.com> | 2011-10-23 20:22:38 -0700 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-10-31 11:51:28 -0400 |
| commit | d743c3c9c236cc61403a4f7d6283d59ddf68b2bd (patch) | |
| tree | 9eb73b3ba65167f61f8b455c8d54ff68a1905b2e /fs/nfs/callback_xdr.c | |
| parent | 92407e75ce45b41c46944891711fd8faf0714d84 (diff) | |
| download | lwn-d743c3c9c236cc61403a4f7d6283d59ddf68b2bd.tar.gz lwn-d743c3c9c236cc61403a4f7d6283d59ddf68b2bd.zip | |
NFS4: fix cb_recallany decode error
craa_type_mask is bitmap4 per RFC5661. We need to expect a length before
extracting bitmap value.
Cc: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/callback_xdr.c')
| -rw-r--r-- | fs/nfs/callback_xdr.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 918ad647afea..ee1a5b3cd48d 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -488,17 +488,18 @@ static __be32 decode_recallany_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallanyargs *args) { - __be32 *p; + uint32_t bitmap[2]; + __be32 *p, status; args->craa_addr = svc_addr(rqstp); p = read_buf(xdr, 4); if (unlikely(p == NULL)) return htonl(NFS4ERR_BADXDR); args->craa_objs_to_keep = ntohl(*p++); - p = read_buf(xdr, 4); - if (unlikely(p == NULL)) - return htonl(NFS4ERR_BADXDR); - args->craa_type_mask = ntohl(*p); + status = decode_bitmap(xdr, bitmap); + if (unlikely(status)) + return status; + args->craa_type_mask = bitmap[0]; return 0; } |