include/uapi/linux/uuid.h

   1 /*
   2  * UUID/GUID definition
   3  *
   4  * Copyright (C) 2010, 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
  17 #ifndef _UAPI_LINUX_UUID_H_
  18 #define _UAPI_LINUX_UUID_H_
  19
  20 #include <linux/types.h>
  21 #include <linux/string.h>
  22
  23 typedef struct {
  24         __u8 b[16];
  25 } uuid_le;
  26
  27 typedef struct {
  28         __u8 b[16];
  29 } uuid_be;
  30
  31 #define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)                \
  32 ((uuid_le)                                                              \
  33 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
  34    (b) & 0xff, ((b) >> 8) & 0xff,                                       \
  35    (c) & 0xff, ((c) >> 8) & 0xff,                                       \
  36    (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
  37
  38 #define UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)                \
  39 ((uuid_be)                                                              \
  40 {{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \
  41    ((b) >> 8) & 0xff, (b) & 0xff,                                       \
  42    ((c) >> 8) & 0xff, (c) & 0xff,                                       \
  43    (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
  44
  45 #define NULL_UUID_LE                                                    \
  46         UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,     \
  47                 0x00, 0x00, 0x00, 0x00)
  48
  49 #define NULL_UUID_BE                                                    \
  50         UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,     \
  51                 0x00, 0x00, 0x00, 0x00)
  52
  53
  54 #endif /* _UAPI_LINUX_UUID_H_ */