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
45