nfsd41: compare request's opcnt with session's maxops at nfsd4_sequence

Commit Message

Mi Jinlong April 27, 2011, 1:09 a.m. UTC

Make sure nfs server can distinguish request contains more ops
than channel allowed.

Signed-off-by: Mi Jinlong <[e-mail]>
---
 fs/nfsd/nfs4state.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

Patch

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index fbde6f7..4f9fc68 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1749,6 +1749,11 @@  nfsd4_sequence(struct svc_rqst *rqstp,
 	if (!session)
 		goto out;
 
+	status = nfserr_too_many_ops;
+	if (((struct nfsd4_compoundargs *)rqstp->rq_argp)->opcnt >
+				 session->se_fchannel.maxops)
+		goto out;
+
 	status = nfserr_badslot;
 	if (seq->slotid >= session->se_fchannel.maxreqs)
 		goto out;