| /* 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_ */ |