linux-kernel - [PATCH 02/29] uuid: use prandom

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Date:	Mon, 24 Dec 2012 11:13:49 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Cc:	Akinobu Mita <akinobu.mita@...il.com>,
	"Theodore Ts'o" <tytso@....edu>, Huang Ying <ying.huang@...el.com>
Subject: [PATCH 02/29] uuid: use prandom_bytes()

Use prandom_bytes() to generate 16 bytes of pseudo-random bytes.

Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Cc: "Theodore Ts'o" <tytso@....edu>
Cc: Huang Ying <ying.huang@...el.com>
---
 lib/uuid.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/lib/uuid.c b/lib/uuid.c
index 52a6fe6..398821e 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -25,13 +25,7 @@
 
 static void __uuid_gen_common(__u8 b[16])
 {
-	int i;
-	u32 r;
-
-	for (i = 0; i < 4; i++) {
-		r = random32();
-		memcpy(b + i * 4, &r, 4);
-	}
+	prandom_bytes(b, 16);
 	/* reversion 0b10 */
 	b[8] = (b[8] & 0x3F) | 0x80;
 }
-- 
1.7.11.7

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