decode cb_compound header conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Get rid of cb_compound_hdr_arg.callback_ident callback_ident is not used anywhere so we shouldn't waste any memory to store it. Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxx> --- fs/nfs/callback.h | 1 - fs/nfs/callback_xdr.c | 12 ++++++++---- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h index 21881d9..e0f4e6b 100644 --- a/fs/nfs/callback.h +++ b/fs/nfs/callback.h @@ -27,7 +27,6 @@ struct cb_compound_hdr_arg { unsigned int taglen; const char *tag; unsigned int minorversion; - unsigned int callback_ident; unsigned nops; }; diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 91f6f74..e141a7e 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -143,18 +143,22 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound __func__, hdr->taglen); return htonl(NFS4ERR_RESOURCE); } - p = read_buf(xdr, 12); + p = read_buf(xdr, 4); if (unlikely(p == NULL)) return htonl(NFS4ERR_RESOURCE); hdr->minorversion = ntohl(*p++); - /* Check minor version is zero. */ - if (hdr->minorversion != 0) { + /* Check minor version is zero or one. */ + if (hdr->minorversion <= 1) { + p = read_buf(xdr, 8); + if (unlikely(p == NULL)) + return htonl(NFS4ERR_RESOURCE); + p++; /* skip callback_ident */ + } else { printk(KERN_WARNING "%s: NFSv4 server callback with " "illegal minor version %u!\n", __func__, hdr->minorversion); return htonl(NFS4ERR_MINOR_VERS_MISMATCH); } - hdr->callback_ident = ntohl(*p++); hdr->nops = ntohl(*p); dprintk("%s: minorversion %d nops %d\n", __func__, hdr->minorversion, hdr->nops); -- 1.6.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
