[PATCH 3.10 02/17] af_unix: Convert the unix_sk macro to an inline function for type safety

Greg Kroah-Hartman
2015-10-23T17:46:14Z

From: Aaron Conole <aconole@bytheb.org>

[ Upstream commit 4613012db1d911f80897f9446a49de817b2c4c47 ]

As suggested by Eric Dumazet this change replaces the
#define with a static inline function to enjoy
complaints by the compiler when misusing the API.

Signed-off-by: Aaron Conole <aconole@bytheb.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/net/af_unix.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -63,7 +63,11 @@ struct unix_sock {
#define UNIX_GC_MAYBE_CYCLE 1
struct socket_wq peer_wq;
};
-#define unix_sk(__sk) ((struct unix_sock *)__sk)
+
+static inline struct unix_sock *unix_sk(struct sock *sk)
+{
+ return (struct unix_sock *)sk;
+}

#define peer_wait peer_wq.wait