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| author | Mi Jinlong <mijinlong@cn.fujitsu.com> | 2011-07-14 14:56:02 +0800 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2011-07-15 19:00:00 -0400 |
| commit | ae82a8d06fee573def55b63868b1ea109461a531 (patch) | |
| tree | 4d5878b9e2af9945cb823e1d1282c63b30c618f9 | |
| parent | 1b74c25bc1a142ee8dd7ad080e2a974f28d1cb18 (diff) | |
| download | linux-3.10-ae82a8d06fee573def55b63868b1ea109461a531.tar.gz linux-3.10-ae82a8d06fee573def55b63868b1ea109461a531.tar.bz2 linux-3.10-ae82a8d06fee573def55b63868b1ea109461a531.zip | |
nfsd41: check the size of request
Check in SEQUENCE that the request doesn't exceed maxreq_sz for the
given session.
Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/nfsd/nfs4state.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index fe4ba68886d..6a471af99df 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1762,6 +1762,14 @@ static bool nfsd4_session_too_many_ops(struct svc_rqst *rqstp, struct nfsd4_sess return args->opcnt > session->se_fchannel.maxops; } +static bool nfsd4_request_too_big(struct svc_rqst *rqstp, + struct nfsd4_session *session) +{ + struct xdr_buf *xb = &rqstp->rq_arg; + + return xb->len > session->se_fchannel.maxreq_sz; +} + __be32 nfsd4_sequence(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, @@ -1794,6 +1802,10 @@ nfsd4_sequence(struct svc_rqst *rqstp, if (nfsd4_session_too_many_ops(rqstp, session)) goto out; + status = nfserr_req_too_big; + if (nfsd4_request_too_big(rqstp, session)) + goto out; + status = nfserr_badslot; if (seq->slotid >= session->se_fchannel.maxreqs) goto out; |