From 5771635592267758e7dc5647f2a0088aa6244159 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 21 Apr 2010 12:27:19 -0400 Subject: nfsd4: complete enforcement of 4.1 op ordering Enforce the rules about compound op ordering. Motivated by implementing RECLAIM_COMPLETE, for which the client is implicit in the current session, so it is important to ensure a succesful SEQUENCE proceeds the RECLAIM_COMPLETE. Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'fs/nfsd/nfs4state.c') diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 4300d9ffe95f..bba9fff49cfe 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1343,6 +1343,14 @@ out: return status; } +static bool nfsd4_last_compound_op(struct svc_rqst *rqstp) +{ + struct nfsd4_compoundres *resp = rqstp->rq_resp; + struct nfsd4_compoundargs *argp = rqstp->rq_argp; + + return argp->opcnt == resp->opcnt; +} + __be32 nfsd4_destroy_session(struct svc_rqst *r, struct nfsd4_compound_state *cstate, @@ -1358,6 +1366,11 @@ nfsd4_destroy_session(struct svc_rqst *r, * - Do we need to clear any callback info from previous session? */ + if (!memcmp(&sessionid->sessionid, &cstate->session->se_sessionid, + sizeof(struct nfs4_sessionid))) { + if (!nfsd4_last_compound_op(r)) + return nfserr_not_only_op; + } dump_sessionid(__func__, &sessionid->sessionid); spin_lock(&sessionid_lock); ses = find_in_sessionid_hashtbl(&sessionid->sessionid); -- cgit v1.2.3