/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef _UUID_H_ #define _UUID_H_ #include <string.h> #include <stdint.h> #define UUID_LEN 16 #define UUID_STRLEN 36 /* * Parses a canonical UUID string into the common byte representation * where the first three words are interpreted as little endian: * * The UUID * "00112233-4455-6677-8899-aabbccddeeff" * is stored as * 33 22 11 00 55 44 77 66 88 99 aa bb cc dd ee ff * * Returns negative value on error, 0 on success. */ int parse_uuid(uint8_t *uuid, const char *uuid_str); typedef struct { uint8_t b[16]; } __packed guid_t; #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ ((guid_t) \ {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ (b) & 0xff, ((b) >> 8) & 0xff, \ (c) & 0xff, ((c) >> 8) & 0xff, \ (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } }) static inline int guidcmp(const guid_t *guid1, const guid_t *guid2) { return memcmp(guid1, guid2, sizeof(guid_t)); } static inline guid_t *guidcpy(guid_t *dest, const guid_t *src) { return (guid_t *)memcpy(dest, src, sizeof(guid_t)); } #endif /* _UUID_H_ */