src/common/uuid.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
   5  */
   6
   7 #ifndef _BABELTRACE_COMMON_UUID_H
   8 #define _BABELTRACE_COMMON_UUID_H
   9
  10 #include <inttypes.h>
  11 #include <stdint.h>
  12 #include "common/macros.h"
  13
  14 #ifdef __cplusplus
  15 extern "C" {
  16 #endif
  17
  18 #define BT_UUID_STR_LEN 36 /* Excludes final \0 */
  19 #define BT_UUID_LEN 16
  20 #define BT_UUID_VER 4
  21
  22 #define BT_UUID_FMT \
  23         "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "-%02" SCNx8 \
  24         "%02" SCNx8 "-%02" SCNx8 "%02" SCNx8 "-%02" SCNx8 "%02" SCNx8 \
  25         "-%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 \
  26         "%02" SCNx8
  27
  28 #define BT_UUID_FMT_VALUES(uuid) \
  29         (uuid)[0], (uuid)[1], (uuid)[2], (uuid)[3], (uuid)[4], (uuid)[5], \
  30         (uuid)[6], (uuid)[7], (uuid)[8], (uuid)[9], (uuid)[10], (uuid)[11], \
  31         (uuid)[12], (uuid)[13], (uuid)[14], (uuid)[15]
  32
  33 #define BT_UUID_SCAN_VALUES(uuid) \
  34         &(uuid)[0], &(uuid)[1], &(uuid)[2], &(uuid)[3], &(uuid)[4], &(uuid)[5], \
  35         &(uuid)[6], &(uuid)[7], &(uuid)[8], &(uuid)[9], &(uuid)[10], &(uuid)[11], \
  36         &(uuid)[12], &(uuid)[13], &(uuid)[14], &(uuid)[15]
  37
  38 typedef uint8_t bt_uuid_t[BT_UUID_LEN];
  39
  40 void bt_uuid_generate(bt_uuid_t uuid_out);
  41 void bt_uuid_to_str(const bt_uuid_t uuid_in, char *str_out);
  42 int bt_uuid_from_str(const char *str_in, bt_uuid_t uuid_out);
  43 int bt_uuid_compare(const bt_uuid_t uuid_a, const bt_uuid_t uuid_b);
  44 void bt_uuid_copy(bt_uuid_t uuid_dest, const bt_uuid_t uuid_src);
  45
  46 #ifdef __cplusplus
  47 }
  48 #endif
  49
  50 #endif /* _BABELTRACE_COMMON_UUID_H */