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lockd: Ensure NSM strings aren't longer than protocol allows
Introduce a special helper function to check the length of NSM strings before they are placed on the wire. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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@ -149,6 +149,15 @@ nsm_create(void)
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* XDR functions for NSM.
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*/
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static __be32 *xdr_encode_nsm_string(__be32 *p, char *string)
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{
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size_t len = strlen(string);
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if (len > SM_MAXSTRLEN)
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len = SM_MAXSTRLEN;
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return xdr_encode_opaque(p, string, len);
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}
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static __be32 *
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xdr_encode_common(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
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{
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