From d37c068e695f8ec72b5c1b5a5a5ece2337fda768 Mon Sep 17 00:00:00 2001
From: Christian Heimes <christian@python.org>
Date: Wed, 22 Feb 2017 12:12:00 +0100
Subject: Add sockaddr_alg to sock_addr_t (#234)

sock_addr_t is used to define the minimum size of any socket address on
the stack. Let's make sure that an AF_ALG address always fits. Coverity
complains because in theory, AF_ALG might be larger than any of the other
structs. In practice it already fits.

Closes Coverity CID 1398948, 1398949, 1398950

Signed-off-by: Christian Heimes <christian@python.org>
---
 Modules/socketmodule.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'Modules/socketmodule.h')

diff --git a/Modules/socketmodule.h b/Modules/socketmodule.h
index 3cce927e0b..03f982b910 100644
--- a/Modules/socketmodule.h
+++ b/Modules/socketmodule.h
@@ -98,6 +98,37 @@ typedef int socklen_t;
 #include <sys/kern_control.h>
 #endif
 
+#ifdef HAVE_SOCKADDR_ALG
+#include <linux/if_alg.h>
+#ifndef AF_ALG
+#define AF_ALG 38
+#endif
+#ifndef SOL_ALG
+#define SOL_ALG 279
+#endif
+
+/* Linux 3.19 */
+#ifndef ALG_SET_AEAD_ASSOCLEN
+#define ALG_SET_AEAD_ASSOCLEN           4
+#endif
+#ifndef ALG_SET_AEAD_AUTHSIZE
+#define ALG_SET_AEAD_AUTHSIZE           5
+#endif
+/* Linux 4.8 */
+#ifndef ALG_SET_PUBKEY
+#define ALG_SET_PUBKEY                  6
+#endif
+
+#ifndef ALG_OP_SIGN
+#define ALG_OP_SIGN                     2
+#endif
+#ifndef ALG_OP_VERIFY
+#define ALG_OP_VERIFY                   3
+#endif
+
+#endif /* HAVE_SOCKADDR_ALG */
+
+
 #ifndef Py__SOCKET_H
 #define Py__SOCKET_H
 #ifdef __cplusplus
@@ -159,6 +190,9 @@ typedef union sock_addr {
 #ifdef HAVE_SYS_KERN_CONTROL_H
     struct sockaddr_ctl ctl;
 #endif
+#ifdef HAVE_SOCKADDR_ALG
+    struct sockaddr_alg alg;
+#endif
 } sock_addr_t;
 
 /* The object holding a socket.  It holds some extra information,
-- 
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