SUNRPC: Split another new rpcbind retry error code from EACCES
Add more new error code processing to the kernel's rpcbind client
and to call_bind_status() to distinguish two cases:
Case 1: the remote has replied that the program/version tuple is not
registered (returns EACCES)
Case 2: retry with a lesser rpcbind version (rpcb now returns EPFNOSUPPORT)
This change allows more specific error processing for each of these two
cases. We now fail case 2 instead of retrying... it's a server
configuration error not to support even rpcbind version 2. And don't
expose this new error code to user land -- convert it to EIO before
failing the RPC.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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