diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2018-03-20 17:03:06 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2018-04-10 16:06:22 -0400 |
| commit | 85e3dd44c514a8bed6c713df4af657be83d00f68 (patch) | |
| tree | 6849c4e8f6df03f8dc41b28807c56ddd4434cfd9 /include/linux/sunrpc | |
| parent | 0e779aa70308462e45f7cd1a54de418dfe101694 (diff) | |
| download | linux-0-day-85e3dd44c514a8bed6c713df4af657be83d00f68.tar.gz linux-0-day-85e3dd44c514a8bed6c713df4af657be83d00f68.tar.xz | |
SUNRPC: Add a helper for encoding opaque data inline
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include/linux/sunrpc')
| -rw-r--r-- | include/linux/sunrpc/xdr.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 7e609de34d857..a43c3b6455b64 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -319,6 +319,31 @@ xdr_stream_encode_u64(struct xdr_stream *xdr, __u64 n) } /** + * 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 * @ptr: pointer to opaque data object |