tree 009163b2f4c0255599d3c781a833c2dcfaa621ed
parent 1537693ceaa8d6484f1ce631bec85658bfa9816c
author Trond Myklebust <Trond.Myklebust@netapp.com> 1340200715 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1340918441 -0400

SUNRPC: Don't decode beyond the end of the RPC reply message

Now that xdr_inline_decode() will automatically cross into the page
buffers, we need to ensure that it doesn't exceed the total reply
message length.

This patch sets up a counter that tracks the number of words
remaining in the reply message, and ensures that xdr_inline_decode,
xdr_read_pages and xdr_enter_page respect the end of message boundary.

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