linux-kernel - [PATCH 5/8] Use __kernel_ulong_t in struct msqid64

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Date:	Fri, 27 Dec 2013 09:25:09 -0800
From:	"H.J. Lu" <hjl.tools@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>
Cc:	"H.J. Lu" <hjl.tools@...il.com>
Subject: [PATCH 5/8] Use __kernel_ulong_t in struct msqid64_ds

Both x32 and x86-64 use the same struct msqid64_ds for system calls.
But x32 long is 32-bit. This patch replaces unsigned long with
__kernel_ulong_t in struct msqid64_ds if __BITS_PER_LONG == 64.

Signed-off-by: H.J. Lu <hjl.tools@...il.com>
---
 include/uapi/asm-generic/msgbuf.h | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/include/uapi/asm-generic/msgbuf.h b/include/uapi/asm-generic/msgbuf.h
index aec850d..e73766a 100644
--- a/include/uapi/asm-generic/msgbuf.h
+++ b/include/uapi/asm-generic/msgbuf.h
@@ -34,14 +34,23 @@ struct msqid64_ds {
 	__kernel_time_t msg_ctime;	/* last change time */
 #if __BITS_PER_LONG != 64
 	unsigned long	__unused3;
+	unsigned long	msg_cbytes;	/* current number of bytes on queue */
+	unsigned long	msg_qnum;	/* number of messages in queue */
+	unsigned long	msg_qbytes;	/* max number of bytes on queue */
+#else
+	__kernel_ulong_t msg_cbytes;	/* current number of bytes on queue */
+	__kernel_ulong_t msg_qnum;	/* number of messages in queue */
+	__kernel_ulong_t msg_qbytes;	/* max number of bytes on queue */
 #endif
-	unsigned long  msg_cbytes;	/* current number of bytes on queue */
-	unsigned long  msg_qnum;	/* number of messages in queue */
-	unsigned long  msg_qbytes;	/* max number of bytes on queue */
 	__kernel_pid_t msg_lspid;	/* pid of last msgsnd */
 	__kernel_pid_t msg_lrpid;	/* last receive pid */
-	unsigned long  __unused4;
-	unsigned long  __unused5;
+#if __BITS_PER_LONG != 64
+	unsigned long	__unused4;
+	unsigned long	__unused5;
+#else
+	__kernel_ulong_t __unused4;
+	__kernel_ulong_t __unused5;
+#endif
 };
 
 #endif /* __ASM_GENERIC_MSGBUF_H */
-- 
1.8.4.2

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