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106 lines
2.3 KiB
106 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* UUID/GUID definition |
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* |
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* Copyright (C) 2010, 2016 Intel Corp. |
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* Huang Ying <[email protected]> |
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*/ |
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#ifndef _LINUX_UUID_H_ |
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#define _LINUX_UUID_H_ |
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#include <uapi/linux/uuid.h> |
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#include <linux/string.h> |
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#define UUID_SIZE 16 |
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typedef struct { |
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__u8 b[UUID_SIZE]; |
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} uuid_t; |
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#define UUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ |
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((uuid_t) \ |
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{{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \ |
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((b) >> 8) & 0xff, (b) & 0xff, \ |
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((c) >> 8) & 0xff, (c) & 0xff, \ |
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(d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) |
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/* |
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* The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee") |
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* not including trailing NUL. |
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*/ |
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#define UUID_STRING_LEN 36 |
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extern const guid_t guid_null; |
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extern const uuid_t uuid_null; |
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static inline bool guid_equal(const guid_t *u1, const guid_t *u2) |
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{ |
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return memcmp(u1, u2, sizeof(guid_t)) == 0; |
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} |
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static inline void guid_copy(guid_t *dst, const guid_t *src) |
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{ |
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memcpy(dst, src, sizeof(guid_t)); |
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} |
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static inline void import_guid(guid_t *dst, const __u8 *src) |
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{ |
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memcpy(dst, src, sizeof(guid_t)); |
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} |
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static inline void export_guid(__u8 *dst, const guid_t *src) |
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{ |
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memcpy(dst, src, sizeof(guid_t)); |
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} |
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static inline bool guid_is_null(const guid_t *guid) |
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{ |
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return guid_equal(guid, &guid_null); |
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} |
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static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2) |
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{ |
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return memcmp(u1, u2, sizeof(uuid_t)) == 0; |
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} |
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static inline void uuid_copy(uuid_t *dst, const uuid_t *src) |
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{ |
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memcpy(dst, src, sizeof(uuid_t)); |
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} |
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static inline void import_uuid(uuid_t *dst, const __u8 *src) |
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{ |
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memcpy(dst, src, sizeof(uuid_t)); |
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} |
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static inline void export_uuid(__u8 *dst, const uuid_t *src) |
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{ |
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memcpy(dst, src, sizeof(uuid_t)); |
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} |
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static inline bool uuid_is_null(const uuid_t *uuid) |
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{ |
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return uuid_equal(uuid, &uuid_null); |
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} |
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void generate_random_uuid(unsigned char uuid[16]); |
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void generate_random_guid(unsigned char guid[16]); |
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extern void guid_gen(guid_t *u); |
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extern void uuid_gen(uuid_t *u); |
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bool __must_check uuid_is_valid(const char *uuid); |
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extern const u8 guid_index[16]; |
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extern const u8 uuid_index[16]; |
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int guid_parse(const char *uuid, guid_t *u); |
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int uuid_parse(const char *uuid, uuid_t *u); |
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/* backwards compatibility, don't use in new code */ |
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static inline int uuid_le_cmp(const guid_t u1, const guid_t u2) |
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{ |
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return memcmp(&u1, &u2, sizeof(guid_t)); |
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} |
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#endif
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