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authorChuck Lever <chuck.lever@oracle.com>2020-11-17 01:16:52 +0300
committerChuck Lever <chuck.lever@oracle.com>2020-11-30 22:46:38 +0300
commit8918cc0d2b72db9997390626010b182c4500d749 (patch)
treec28d7ff1df2dce55ef2e742cd4c390fc7a28ed54 /include/linux/sunrpc
parent144e82694092ff80b5e64749d6822cd8947587f2 (diff)
downloadlinux-8918cc0d2b72db9997390626010b182c4500d749.tar.xz
NFSD: Add helper for decoding locker4
Refactor for clarity. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'include/linux/sunrpc')
-rw-r--r--include/linux/sunrpc/xdr.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index cc669d95c484..9b35ce50cf2b 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -551,6 +551,27 @@ static inline bool xdr_item_is_present(const __be32 *p)
}
/**
+ * xdr_stream_decode_bool - Decode a boolean
+ * @xdr: pointer to xdr_stream
+ * @ptr: pointer to a u32 in which to store the result
+ *
+ * Return values:
+ * %0 on success
+ * %-EBADMSG on XDR buffer overflow
+ */
+static inline ssize_t
+xdr_stream_decode_bool(struct xdr_stream *xdr, __u32 *ptr)
+{
+ const size_t count = sizeof(*ptr);
+ __be32 *p = xdr_inline_decode(xdr, count);
+
+ if (unlikely(!p))
+ return -EBADMSG;
+ *ptr = (*p != xdr_zero);
+ return 0;
+}
+
+/**
* xdr_stream_decode_u32 - Decode a 32-bit integer
* @xdr: pointer to xdr_stream
* @ptr: location to store integer