LXR linux/include/uapi/linux/uuid.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2/*
   3 * UUID/GUID definition
   4 *
   5 * Copyright (C) 2010, Intel Corp.
   6 *      Huang Ying <ying.huang@intel.com>
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License version
  10 * 2 as published by the Free Software Foundation;
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 */
  17
  18#ifndef _UAPI_LINUX_UUID_H_
  19#define _UAPI_LINUX_UUID_H_
  20
  21#include <linux/types.h>
  22
  23typedef 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 */
  35typedef 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_ */
  43