dm: core: Allow getting some basic stats
[platform/kernel/u-boot.git] / 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 #include <linux/bitops.h>
10
11 /* This is structure is in big-endian */
12 struct uuid {
13         unsigned int time_low;
14         unsigned short time_mid;
15         unsigned short time_hi_and_version;
16         unsigned char clock_seq_hi_and_reserved;
17         unsigned char clock_seq_low;
18         unsigned char node[6];
19 } __packed;
20
21 /* Bits of a bitmask specifying the output format for GUIDs */
22 #define UUID_STR_FORMAT_STD     0
23 #define UUID_STR_FORMAT_GUID    BIT(0)
24 #define UUID_STR_UPPER_CASE     BIT(1)
25
26 /* Use UUID_STR_LEN + 1 for string space */
27 #define UUID_STR_LEN            36
28 #define UUID_BIN_LEN            sizeof(struct uuid)
29
30 #define UUID_VERSION_MASK       0xf000
31 #define UUID_VERSION_SHIFT      12
32 #define UUID_VERSION            0x4
33
34 #define UUID_VARIANT_MASK       0xc0
35 #define UUID_VARIANT_SHIFT      7
36 #define UUID_VARIANT            0x1
37
38 int uuid_str_valid(const char *uuid);
39 int uuid_str_to_bin(const char *uuid_str, unsigned char *uuid_bin,
40                     int str_format);
41 void uuid_bin_to_str(const unsigned char *uuid_bin, char *uuid_str,
42                      int str_format);
43 int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin);
44 const char *uuid_guid_get_str(const unsigned char *guid_bin);
45 void gen_rand_uuid(unsigned char *uuid_bin);
46 void gen_rand_uuid_str(char *uuid_str, int str_format);
47 #endif