include/uuid.h

   1 /*
   2  * Copyright (C) 2014 Samsung Electronics
   3  * Przemyslaw Marczak <p.marczak@samsung.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7 #ifndef __UUID_H__
   8 #define __UUID_H__
   9
  10 /* This is structure is in big-endian */
  11 struct uuid {
  12         unsigned int time_low;
  13         unsigned short time_mid;
  14         unsigned short time_hi_and_version;
  15         unsigned char clock_seq_hi_and_reserved;
  16         unsigned char clock_seq_low;
  17         unsigned char node[6];
  18 } __packed;
  19
  20 enum {
  21         UUID_STR_FORMAT_STD,
  22         UUID_STR_FORMAT_GUID
  23 };
  24
  25 #define UUID_STR_LEN            36
  26 #define UUID_BIN_LEN            sizeof(struct uuid)
  27
  28 #define UUID_VERSION_MASK       0xf000
  29 #define UUID_VERSION_SHIFT      12
  30 #define UUID_VERSION            0x4
  31
  32 #define UUID_VARIANT_MASK       0xc0
  33 #define UUID_VARIANT_SHIFT      7
  34 #define UUID_VARIANT            0x1
  35
  36 int uuid_str_valid(const char *uuid);
  37 int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format);
  38 void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format);
  39 void gen_rand_uuid(unsigned char *uuid_bin);
  40 void gen_rand_uuid_str(char *uuid_str, int str_format);
  41 #endif