| /* 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 void import_guid(guid_t *dst, const __u8 *src) |
| { |
| memcpy(dst, src, sizeof(guid_t)); |
| } |
| |
| static inline void export_guid(__u8 *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 void import_uuid(uuid_t *dst, const __u8 *src) |
| { |
| memcpy(dst, src, sizeof(uuid_t)); |
| } |
| |
| static inline void export_uuid(__u8 *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]); |
| void generate_random_guid(unsigned char guid[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 */ |
| static inline int uuid_le_cmp(const guid_t u1, const guid_t u2) |
| { |
| return memcmp(&u1, &u2, sizeof(guid_t)); |
| } |
| |
| #endif |