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

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Make sure nfs server errors out if request contains more ops
than channel allows.

Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
[bfields@redhat.com: use helper function]
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Mi Jinlong 2011-04-27 09:09:58 +08:00 committed by J. Bruce Fields
parent b7c66360dc
commit 868b89c3dc
1 changed files with 11 additions and 0 deletions
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11
fs/nfsd/nfs4state.c
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@ -1724,6 +1724,13 @@ static void nfsd4_sequence_check_conn(struct nfsd4_conn *new, struct nfsd4_sessi
return;
}
static bool nfsd4_session_too_many_ops(struct svc_rqst *rqstp, struct nfsd4_session *session)
{
struct nfsd4_compoundargs *args = rqstp->rq_argp;
return args->opcnt > session->se_fchannel.maxops;
}
__be32
nfsd4_sequence(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
@ -1752,6 +1759,10 @@ nfsd4_sequence(struct svc_rqst *rqstp,
if (!session)
goto out;
status = nfserr_too_many_ops;
if (nfsd4_session_too_many_ops(rqstp, session))
goto out;
status = nfserr_badslot;
if (seq->slotid >= session->se_fchannel.maxreqs)
goto out;