src/common/compat/uuid.c

   1 /*
   2  * Copyright (C) 2018 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * This library is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License, version 2.1 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This library is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this library; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16  */
  17
  18 #include <stdio.h>
  19 #include <common/compat/uuid.h>
  20 #include <string.h>
  21 #include <stddef.h>
  22
  23 static const lttng_uuid nil_uuid;
  24
  25 void lttng_uuid_to_str(const lttng_uuid uuid, char *uuid_str)
  26 {
  27         sprintf(uuid_str,
  28                         "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  29                         uuid[0], uuid[1], uuid[2], uuid[3],
  30                         uuid[4], uuid[5], uuid[6], uuid[7],
  31                         uuid[8], uuid[9], uuid[10], uuid[11],
  32                         uuid[12], uuid[13], uuid[14], uuid[15]);
  33 }
  34
  35 bool lttng_uuid_is_equal(const lttng_uuid a, const lttng_uuid b)
  36 {
  37         return memcmp(a, b, (sizeof(lttng_uuid))) == 0;
  38 }
  39
  40 bool lttng_uuid_is_nil(const lttng_uuid uuid)
  41 {
  42         return memcmp(nil_uuid, uuid, sizeof(lttng_uuid)) == 0;
  43 }
  44
  45 void lttng_uuid_copy(lttng_uuid dst, const lttng_uuid src)
  46 {
  47         memcpy(dst, src, sizeof(lttng_uuid));
  48 }