linux-kernel - [char-misc-next 04/11] uuid: extract macros for assigning raw arrays

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Message-Id: <1431003248-3164-4-git-send-email-tomas.winkler@intel.com>
Date:	Thu,  7 May 2015 15:54:01 +0300
From:	Tomas Winkler <tomas.winkler@...el.com>
To:	gregkh@...uxfoundation.org
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org,
	Tomas Winkler <tomas.winkler@...el.com>
Subject: [char-misc-next 04/11] uuid: extract macros for assigning raw arrays

we need 16 byte arrays for handling uuids in
device ids

Cc:linux-api@...r.kernel.org
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
 include/uapi/linux/uuid.h | 41 ++++++++++++++++++++++++-----------------
 1 file changed, 24 insertions(+), 17 deletions(-)

diff --git a/include/uapi/linux/uuid.h b/include/uapi/linux/uuid.h
index 786f0773cc33..487f098c8517 100644
--- a/include/uapi/linux/uuid.h
+++ b/include/uapi/linux/uuid.h
@@ -32,27 +32,34 @@ typedef struct {
 	__u8 b[16];
 } uuid_be;
 
-#define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)		\
-((uuid_le)								\
-{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
-   (b) & 0xff, ((b) >> 8) & 0xff,					\
-   (c) & 0xff, ((c) >> 8) & 0xff,					\
-   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+#define __UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)                     \
+	{(a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff,\
+	  (b) & 0xff, ((b) >> 8) & 0xff,                                       \
+	  (c) & 0xff, ((c) >> 8) & 0xff,                                       \
+	  (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)}
+
+#define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)	\
+	((uuid_le) {__UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)})
+
+#define __UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)                     \
+	{((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff,\
+	  ((b) >> 8) & 0xff, (b) & 0xff,                                       \
+	  ((c) >> 8) & 0xff, (c) & 0xff,                                       \
+	  (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)}
 
 #define UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)		\
-((uuid_be)								\
-{{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \
-   ((b) >> 8) & 0xff, (b) & 0xff,					\
-   ((c) >> 8) & 0xff, (c) & 0xff,					\
-   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+	((uuid_be) {__UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)})
+
+#define __NULL_UUID_LE							\
+	__UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
+		  0x00, 0x00, 0x00, 0x00)
 
-#define NULL_UUID_LE							\
-	UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
-		0x00, 0x00, 0x00, 0x00)
+#define NULL_UUID_LE ((uuid_le) {__NULL_UUID_LE})
 
-#define NULL_UUID_BE							\
-	UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
-		0x00, 0x00, 0x00, 0x00)
+#define __NULL_UUID_BE							\
+	__UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
+		  0x00, 0x00, 0x00, 0x00)
 
+#define NULL_UUID_BE ((uuid_be) {__NULL_UUID_BE})
 
 #endif /* _UAPI_LINUX_UUID_H_ */
-- 
2.1.0

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