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 } guid_t;
  26
  27 #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)                      \
  28 ((guid_t)                                                               \
  29 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
  30    (b) & 0xff, ((b) >> 8) & 0xff,                                       \
  31    (c) & 0xff, ((c) >> 8) & 0xff,                                       \
  32    (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
  33
  34 /* backwards compatibility, don't use in new code */
  35 typedef guid_t uuid_le;
  36 #define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)                \
  37         GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
  38 #define NULL_UUID_LE                                                    \
  39         UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,     \
  40              0x00, 0x00, 0x00, 0x00)
  41
  42 #endif /* _UAPI_LINUX_UUID_H_ */