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[PATCH] RPC: Make rpc_create_client() probe server for RPC program+version support

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Ensure that we don't create an RPC client without checking that the server
 does indeed support the RPC program + version that we are trying to set up.

 This enables us to immediately return an error to "mount" if it turns out
 that the server is only supporting NFSv2, when we requested NFSv3 or NFSv4.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2005-06-22 17:16:20 +00:00
parent 5b616f5d59
commit 5ee0ed7d3a
5 changed files with 66 additions and 5 deletions
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2
fs/lockd/mon.c
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@@ -115,6 +115,7 @@ nsm_create(void)
xprt = xprt_create_proto(IPPROTO_UDP, &sin, NULL);
if (IS_ERR(xprt))
return (struct rpc_clnt *)xprt;
xprt->resvport = 1; /* NSM requires a reserved port */
clnt = rpc_create_client(xprt, "localhost",
&nsm_program, SM_VERSION,
@@ -124,7 +125,6 @@ nsm_create(void)
clnt->cl_softrtry = 1;
clnt->cl_chatty = 1;
clnt->cl_oneshot = 1;
xprt->resvport = 1; /* NSM requires a reserved port */
return clnt;
out_err: