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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-06-20 17:58:35 +0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-06-29 01:20:41 +0400 |
| commit | bfeea1dc1c9238f9e5a17a265489ecd0d19f66bb (patch) | |
| tree | 009163b2f4c0255599d3c781a833c2dcfaa621ed /include/linux/sunrpc/xdr.h | |
| parent | 1537693ceaa8d6484f1ce631bec85658bfa9816c (diff) | |
| download | linux-bfeea1dc1c9238f9e5a17a265489ecd0d19f66bb.tar.xz | |
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>
Diffstat (limited to 'include/linux/sunrpc/xdr.h')
| -rw-r--r-- | include/linux/sunrpc/xdr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index af70af333546..f1e7f884d1c3 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -205,6 +205,7 @@ struct xdr_stream { struct kvec *iov; /* pointer to the current kvec */ struct kvec scratch; /* Scratch buffer */ struct page **page_ptr; /* pointer to the current page */ + unsigned int nwords; /* Remaining decode buffer length */ }; /* |