cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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uuid.h (2400B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * UUID/GUID definition
      4 *
      5 * Copyright (C) 2010, 2016 Intel Corp.
      6 *	Huang Ying <ying.huang@intel.com>
      7 */
      8#ifndef _LINUX_UUID_H_
      9#define _LINUX_UUID_H_
     10
     11#include <uapi/linux/uuid.h>
     12#include <linux/string.h>
     13
     14#define UUID_SIZE 16
     15
     16typedef struct {
     17	__u8 b[UUID_SIZE];
     18} uuid_t;
     19
     20#define UUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)			\
     21((uuid_t)								\
     22{{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \
     23   ((b) >> 8) & 0xff, (b) & 0xff,					\
     24   ((c) >> 8) & 0xff, (c) & 0xff,					\
     25   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
     26
     27/*
     28 * The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")
     29 * not including trailing NUL.
     30 */
     31#define	UUID_STRING_LEN		36
     32
     33extern const guid_t guid_null;
     34extern const uuid_t uuid_null;
     35
     36static inline bool guid_equal(const guid_t *u1, const guid_t *u2)
     37{
     38	return memcmp(u1, u2, sizeof(guid_t)) == 0;
     39}
     40
     41static inline void guid_copy(guid_t *dst, const guid_t *src)
     42{
     43	memcpy(dst, src, sizeof(guid_t));
     44}
     45
     46static inline void import_guid(guid_t *dst, const __u8 *src)
     47{
     48	memcpy(dst, src, sizeof(guid_t));
     49}
     50
     51static inline void export_guid(__u8 *dst, const guid_t *src)
     52{
     53	memcpy(dst, src, sizeof(guid_t));
     54}
     55
     56static inline bool guid_is_null(const guid_t *guid)
     57{
     58	return guid_equal(guid, &guid_null);
     59}
     60
     61static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2)
     62{
     63	return memcmp(u1, u2, sizeof(uuid_t)) == 0;
     64}
     65
     66static inline void uuid_copy(uuid_t *dst, const uuid_t *src)
     67{
     68	memcpy(dst, src, sizeof(uuid_t));
     69}
     70
     71static inline void import_uuid(uuid_t *dst, const __u8 *src)
     72{
     73	memcpy(dst, src, sizeof(uuid_t));
     74}
     75
     76static inline void export_uuid(__u8 *dst, const uuid_t *src)
     77{
     78	memcpy(dst, src, sizeof(uuid_t));
     79}
     80
     81static inline bool uuid_is_null(const uuid_t *uuid)
     82{
     83	return uuid_equal(uuid, &uuid_null);
     84}
     85
     86void generate_random_uuid(unsigned char uuid[16]);
     87void generate_random_guid(unsigned char guid[16]);
     88
     89extern void guid_gen(guid_t *u);
     90extern void uuid_gen(uuid_t *u);
     91
     92bool __must_check uuid_is_valid(const char *uuid);
     93
     94extern const u8 guid_index[16];
     95extern const u8 uuid_index[16];
     96
     97int guid_parse(const char *uuid, guid_t *u);
     98int uuid_parse(const char *uuid, uuid_t *u);
     99
    100/* backwards compatibility, don't use in new code */
    101static inline int uuid_le_cmp(const guid_t u1, const guid_t u2)
    102{
    103	return memcmp(&u1, &u2, sizeof(guid_t));
    104}
    105
    106#endif