From 85e3dd44c514a8bed6c713df4af657be83d00f68 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:06 -0400 Subject: SUNRPC: Add a helper for encoding opaque data inline Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- include/linux/sunrpc/xdr.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 7e609de34d85..a43c3b6455b6 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -318,6 +318,31 @@ xdr_stream_encode_u64(struct xdr_stream *xdr, __u64 n) return len; } +/** + * xdr_stream_encode_opaque_inline - Encode opaque xdr data + * @xdr: pointer to xdr_stream + * @ptr: pointer to void pointer + * @len: size of object + * + * Return values: + * On success, returns length in bytes of XDR buffer consumed + * %-EMSGSIZE on XDR buffer overflow + */ +static inline ssize_t +xdr_stream_encode_opaque_inline(struct xdr_stream *xdr, void **ptr, size_t len) +{ + size_t count = sizeof(__u32) + xdr_align_size(len); + __be32 *p = xdr_reserve_space(xdr, count); + + if (unlikely(!p)) { + *ptr = NULL; + return -EMSGSIZE; + } + xdr_encode_opaque(p, NULL, len); + *ptr = ++p; + return count; +} + /** * xdr_stream_encode_opaque_fixed - Encode fixed length opaque xdr data * @xdr: pointer to xdr_stream -- cgit v1.2.3