include/linux/uuid.h

   1 /*
   2  * UUID/GUID definition
   3  *
   4  * Copyright (C) 2010, 2016 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 #ifndef _LINUX_UUID_H_
  17 #define _LINUX_UUID_H_
  18
  19 #include <uapi/linux/uuid.h>
  20
  21 /*
  22  * The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")
  23  * not including trailing NUL.
  24  */
  25 #define UUID_STRING_LEN         36
  26
  27 static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2)
  28 {
  29         return memcmp(&u1, &u2, sizeof(uuid_le));
  30 }
  31
  32 static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2)
  33 {
  34         return memcmp(&u1, &u2, sizeof(uuid_be));
  35 }
  36
  37 void generate_random_uuid(unsigned char uuid[16]);
  38
  39 extern void uuid_le_gen(uuid_le *u);
  40 extern void uuid_be_gen(uuid_be *u);
  41
  42 bool __must_check uuid_is_valid(const char *uuid);
  43
  44 extern const u8 uuid_le_index[16];
  45 extern const u8 uuid_be_index[16];
  46
  47 int uuid_le_to_bin(const char *uuid, uuid_le *u);
  48 int uuid_be_to_bin(const char *uuid, uuid_be *u);
  49
  50 #endif