linux/lib/uuid.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Unified UUID/GUID definition
 *
 * Copyright (C) 2009, 2016 Intel Corp.
 *	Huang Ying <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/uuid.h>
#include <linux/random.h>

const guid_t guid_null;
EXPORT_SYMBOL(…);
const uuid_t uuid_null;
EXPORT_SYMBOL(…);

const u8 guid_index[16] = …;
const u8 uuid_index[16] = …;

/**
 * generate_random_uuid - generate a random UUID
 * @uuid: where to put the generated UUID
 *
 * Random UUID interface
 *
 * Used to create a Boot ID or a filesystem UUID/GUID, but can be
 * useful for other kernel drivers.
 */
void generate_random_uuid(unsigned char uuid[16])
{ … }
EXPORT_SYMBOL(…);

void generate_random_guid(unsigned char guid[16])
{ … }
EXPORT_SYMBOL(…);

static void __uuid_gen_common(__u8 b[16])
{ … }

void guid_gen(guid_t *lu)
{ … }
EXPORT_SYMBOL_GPL(…);

void uuid_gen(uuid_t *bu)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * uuid_is_valid - checks if a UUID string is valid
 * @uuid:	UUID string to check
 *
 * Description:
 * It checks if the UUID string is following the format:
 *	xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
 *
 * where x is a hex digit.
 *
 * Return: true if input is valid UUID string.
 */
bool uuid_is_valid(const char *uuid)
{ … }
EXPORT_SYMBOL(…);

static int __uuid_parse(const char *uuid, __u8 b[16], const u8 ei[16])
{ … }

int guid_parse(const char *uuid, guid_t *u)
{ … }
EXPORT_SYMBOL(…);

int uuid_parse(const char *uuid, uuid_t *u)
{ … }
EXPORT_SYMBOL(…);