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| author | Chuck Lever <chuck.lever@oracle.com> | 2023-01-02 20:06:54 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-02-20 17:20:16 +0300 |
| commit | b68e4c5c32275e23d35badb7287faaa310c15ba0 (patch) | |
| tree | bccef3ab1bff6f9aeba1c114e1d716bab8a8bb48 /net/sunrpc/xdr.c | |
| parent | e14673c9c1c193896b155165d526a45c83094c1f (diff) | |
| download | linux-b68e4c5c32275e23d35badb7287faaa310c15ba0.tar.xz | |
SUNRPC: Convert unwrap_integ_data() to use xdr_stream
Done as part of hardening the server-side RPC header decoding path.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/xdr.c')
| -rw-r--r-- | net/sunrpc/xdr.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c index 4845ba2113fd..c7e89921d511 100644 --- a/net/sunrpc/xdr.c +++ b/net/sunrpc/xdr.c @@ -1193,6 +1193,21 @@ void xdr_truncate_encode(struct xdr_stream *xdr, size_t len) EXPORT_SYMBOL(xdr_truncate_encode); /** + * xdr_truncate_decode - Truncate a decoding stream + * @xdr: pointer to struct xdr_stream + * @len: Number of bytes to remove + * + */ +void xdr_truncate_decode(struct xdr_stream *xdr, size_t len) +{ + unsigned int nbytes = xdr_align_size(len); + + xdr->buf->len -= nbytes; + xdr->nwords -= XDR_QUADLEN(nbytes); +} +EXPORT_SYMBOL_GPL(xdr_truncate_decode); + +/** * xdr_restrict_buflen - decrease available buffer space * @xdr: pointer to xdr_stream * @newbuflen: new maximum number of bytes available |