1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (C) 2014 Samsung Electronics
4 * Przemyslaw Marczak <p.marczak@samsung.com>
9 #include <linux/bitops.h>
11 /* This is structure is in big-endian */
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];
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)
26 /* Use UUID_STR_LEN + 1 for string space */
27 #define UUID_STR_LEN 36
28 #define UUID_BIN_LEN sizeof(struct uuid)
30 #define UUID_VERSION_MASK 0xf000
31 #define UUID_VERSION_SHIFT 12
32 #define UUID_VERSION 0x4
34 #define UUID_VARIANT_MASK 0xc0
35 #define UUID_VARIANT_SHIFT 7
36 #define UUID_VARIANT 0x1
38 int uuid_str_valid(const char *uuid);
39 int uuid_str_to_bin(const char *uuid_str, unsigned char *uuid_bin,
41 void uuid_bin_to_str(const unsigned char *uuid_bin, char *uuid_str,
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);