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 */ 12struct 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#define UUID_STR_LEN 36 27#define UUID_BIN_LEN sizeof(struct uuid) 28 29#define UUID_VERSION_MASK 0xf000 30#define UUID_VERSION_SHIFT 12 31#define UUID_VERSION 0x4 32 33#define UUID_VARIANT_MASK 0xc0 34#define UUID_VARIANT_SHIFT 7 35#define UUID_VARIANT 0x1 36 37int uuid_str_valid(const char *uuid); 38int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format); 39void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format); 40#ifdef CONFIG_PARTITION_TYPE_GUID 41int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin); 42int uuid_guid_get_str(unsigned char *guid_bin, char *guid_str); 43#endif 44void gen_rand_uuid(unsigned char *uuid_bin); 45void gen_rand_uuid_str(char *uuid_str, int str_format); 46#endif 47