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[v4,1/2,net] af_unix: Convert the unix_sk macro to an inline function for type safety

Message ID 1443307843-16880-2-git-send-email-aconole@bytheb.org
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Aaron Conole Sept. 26, 2015, 10:50 p.m. UTC 
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>
---
 include/net/af_unix.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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Patch

diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index 4a167b3..cb1b9bb 100644
--- 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