include/uuid.h

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