LCOV - code coverage report
Current view: top level - lib - uuid.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 10 0.0 %
Date: 2014-02-18 Functions: 0 2 0.0 %
Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Unified UUID/GUID definition
       3                 :            :  *
       4                 :            :  * Copyright (C) 2009, Intel Corp.
       5                 :            :  *      Huang Ying <ying.huang@intel.com>
       6                 :            :  *
       7                 :            :  * This program is free software; you can redistribute it and/or
       8                 :            :  * modify it under the terms of the GNU General Public License version
       9                 :            :  * 2 as published by the Free Software Foundation;
      10                 :            :  *
      11                 :            :  * This program is distributed in the hope that it will be useful,
      12                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14                 :            :  * GNU General Public License for more details.
      15                 :            :  *
      16                 :            :  * You should have received a copy of the GNU General Public License
      17                 :            :  * along with this program; if not, write to the Free Software
      18                 :            :  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      19                 :            :  */
      20                 :            : 
      21                 :            : #include <linux/kernel.h>
      22                 :            : #include <linux/export.h>
      23                 :            : #include <linux/uuid.h>
      24                 :            : #include <linux/random.h>
      25                 :            : 
      26                 :            : static void __uuid_gen_common(__u8 b[16])
      27                 :            : {
      28                 :          0 :         prandom_bytes(b, 16);
      29                 :            :         /* reversion 0b10 */
      30                 :          0 :         b[8] = (b[8] & 0x3F) | 0x80;
      31                 :            : }
      32                 :            : 
      33                 :          0 : void uuid_le_gen(uuid_le *lu)
      34                 :            : {
      35                 :          0 :         __uuid_gen_common(lu->b);
      36                 :            :         /* version 4 : random generation */
      37                 :          0 :         lu->b[7] = (lu->b[7] & 0x0F) | 0x40;
      38                 :          0 : }
      39                 :            : EXPORT_SYMBOL_GPL(uuid_le_gen);
      40                 :            : 
      41                 :          0 : void uuid_be_gen(uuid_be *bu)
      42                 :            : {
      43                 :          0 :         __uuid_gen_common(bu->b);
      44                 :            :         /* version 4 : random generation */
      45                 :          0 :         bu->b[6] = (bu->b[6] & 0x0F) | 0x40;
      46                 :          0 : }
      47                 :            : EXPORT_SYMBOL_GPL(uuid_be_gen);

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