Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc8c7d...
Commit: fc8c7dc1b29560c016a67a34ccff32a712b5aa86
Parent: 5f3e54057c62e5f654c66e4ce1172993f67fc284
Author: David S. Miller <davem@davemloft.net>
AuthorDate: Wed Jan 14 14:55:35 2009 -0800
Committer: David S. Miller <davem@davemloft.net>
CommitDate: Wed Jan 14 14:55:35 2009 -0800
xfrm: For 32/64 compatability wrt. xfrm_usersa_info
Reported by Jiri Klimes.
Fix suggested by Patrick McHardy.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/xfrm/xfrm_user.c | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index b95a2d6..7877e79 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1914,10 +1914,17 @@ static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
}
#endif
+/* For the xfrm_usersa_info cases we have to work around some 32-bit vs.
+ * 64-bit compatability issues. On 32-bit the structure is 220 bytes, but
+ * for 64-bit it gets padded out to 224 bytes. Those bytes are just
+ * padding and don't have any content we care about. Therefore as long
+ * as we have enough bytes for the content we can make both cases work.
+ */
+
#define XMSGSIZE(type) sizeof(struct type)
static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
- [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
+ [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = 220, /* see above */
[XFRM_MSG_DELSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
[XFRM_MSG_GETSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
[XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
@@ -1927,7 +1934,7 @@ static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
[XFRM_MSG_ACQUIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_acquire),
[XFRM_MSG_EXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_expire),
[XFRM_MSG_UPDPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
- [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
+ [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = 220, /* see above */
[XFRM_MSG_POLEXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_polexpire),
[XFRM_MSG_FLUSHSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_flush),
[XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = 0,
--
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