tree 2bf2cf66277f2400f5dee5f815f5fc1d57c4ffc1
parent 38def50fabc479dc96ea6bd2cb2526e0dfc36fa4
author Trond Myklebust <Trond.Myklebust@netapp.com> 1210095160 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1210956206 -0700

NFSv4: Check the return value of decode_compound_hdr_arg()

If decode_compound_hdr_arg() returns a resource error, then we cannot
proceed to process the callback. Return a 'GARBAGE_ARGS' rpc-level error to
the caller instead.
If, however, the minor version field is incorrect, then we need to
propagate the resulting NFS4ERR_MINOR_VERS_MISMATCH error back as the
compound status field (setting the nops field to 0).

Finally, if encode_compound_hdr_res() returns an error, we need to return
an RPC_SYSTEM_ERR to the caller.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>