https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 219d54332a09e8d8741c1e1982f5eae56099de85 authored by Linus Torvalds on 25 November 2019, 00:32:01 UTC
Linux 5.4
Linux 5.4
Tip revision: 219d543
uuid.h
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* UUID/GUID definition
*
* Copyright (C) 2010, 2016 Intel Corp.
* Huang Ying <ying.huang@intel.com>
*/
#ifndef _LINUX_UUID_H_
#define _LINUX_UUID_H_
#include <uapi/linux/uuid.h>
#include <linux/string.h>
#define UUID_SIZE 16
typedef struct {
__u8 b[UUID_SIZE];
} uuid_t;
#define UUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
((uuid_t) \
{{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \
((b) >> 8) & 0xff, (b) & 0xff, \
((c) >> 8) & 0xff, (c) & 0xff, \
(d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
/*
* The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")
* not including trailing NUL.
*/
#define UUID_STRING_LEN 36
extern const guid_t guid_null;
extern const uuid_t uuid_null;
static inline bool guid_equal(const guid_t *u1, const guid_t *u2)
{
return memcmp(u1, u2, sizeof(guid_t)) == 0;
}
static inline void guid_copy(guid_t *dst, const guid_t *src)
{
memcpy(dst, src, sizeof(guid_t));
}
static inline bool guid_is_null(const guid_t *guid)
{
return guid_equal(guid, &guid_null);
}
static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2)
{
return memcmp(u1, u2, sizeof(uuid_t)) == 0;
}
static inline void uuid_copy(uuid_t *dst, const uuid_t *src)
{
memcpy(dst, src, sizeof(uuid_t));
}
static inline bool uuid_is_null(const uuid_t *uuid)
{
return uuid_equal(uuid, &uuid_null);
}
void generate_random_uuid(unsigned char uuid[16]);
extern void guid_gen(guid_t *u);
extern void uuid_gen(uuid_t *u);
bool __must_check uuid_is_valid(const char *uuid);
extern const u8 guid_index[16];
extern const u8 uuid_index[16];
int guid_parse(const char *uuid, guid_t *u);
int uuid_parse(const char *uuid, uuid_t *u);
/* backwards compatibility, don't use in new code */
#define uuid_le_gen(u) guid_gen(u)
#define uuid_le_to_bin(guid, u) guid_parse(guid, u)
static inline int uuid_le_cmp(const guid_t u1, const guid_t u2)
{
return memcmp(&u1, &u2, sizeof(guid_t));
}
#endif