lib/babeltrace/compat/uuid.h

   1 #ifndef _BABELTRACE_COMPAT_UUID_H
   2 #define _BABELTRACE_COMPAT_UUID_H
   3
   4 /*
   5  * babeltrace/compat/uuid.h
   6  *
   7  * Copyright (C) 2011   Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25  * SOFTWARE.
  26  */
  27
  28 #include <config.h>
  29
  30 /* Includes final \0. */
  31 #define BABELTRACE_UUID_STR_LEN         37
  32 #define BABELTRACE_UUID_LEN             16
  33
  34 #ifdef BABELTRACE_HAVE_LIBUUID
  35 #include <uuid/uuid.h>
  36
  37 static inline
  38 int babeltrace_uuid_generate(unsigned char *uuid_out)
  39 {
  40         uuid_generate(uuid_out);
  41         return 0;
  42 }
  43
  44 static inline
  45 int babeltrace_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  46 {
  47         uuid_unparse(uuid_in, str_out);
  48         return 0;
  49 }
  50
  51 static inline
  52 int babeltrace_uuid_parse(const char *str_in, unsigned char *uuid_out)
  53 {
  54         return uuid_parse(str_in, uuid_out);
  55 }
  56
  57 static inline
  58 int babeltrace_uuid_compare(const unsigned char *uuid_a,
  59                 const unsigned char *uuid_b)
  60 {
  61         return uuid_compare(uuid_a, uuid_b);
  62 }
  63
  64 #elif defined(BABELTRACE_HAVE_LIBC_UUID)
  65 #include <uuid.h>
  66 #include <stdint.h>
  67 #include <string.h>
  68 #include <stdlib.h>
  69
  70 static inline
  71 int babeltrace_uuid_generate(unsigned char *uuid_out)
  72 {
  73         uint32_t status;
  74
  75         uuid_create((uuid_t *) uuid_out, &status);
  76         if (status == uuid_s_ok)
  77                 return 0;
  78         else
  79                 return -1;
  80 }
  81
  82 static inline
  83 int babeltrace_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  84 {
  85         uint32_t status;
  86         char *alloc_str;
  87         int ret;
  88
  89         uuid_to_string((uuid_t *) uuid_in, &alloc_str, &status);
  90         if (status == uuid_s_ok) {
  91                 strcpy(str_out, alloc_str);
  92                 ret = 0;
  93         } else {
  94                 ret = -1;
  95         }
  96         free(alloc_str);
  97         return ret;
  98 }
  99
 100 static inline
 101 int babeltrace_uuid_parse(const char *str_in, unsigned char *uuid_out)
 102 {
 103         uint32_t status;
 104
 105         uuid_from_string(str_in, (uuid_t *) uuid_out, &status);
 106         if (status == uuid_s_ok)
 107                 return 0;
 108         else
 109                 return -1;
 110 }
 111
 112 static inline
 113 int babeltrace_uuid_compare(const unsigned char *uuid_a,
 114                 const unsigned char *uuid_b)
 115 {
 116         uint32_t status;
 117
 118         uuid_compare((uuid_t *) uuid_a, (uuid_t *) uuid_b, &status);
 119         if (status == uuid_s_ok)
 120                 return 0;
 121         else
 122                 return -1;
 123 }
 124
 125 #elif defined(__MINGW32__)
 126
 127 int babeltrace_uuid_generate(unsigned char *uuid_out);
 128 int babeltrace_uuid_unparse(const unsigned char *uuid_in, char *str_out);
 129 int babeltrace_uuid_parse(const char *str_in, unsigned char *uuid_out);
 130 int babeltrace_uuid_compare(const unsigned char *uuid_a,
 131                 const unsigned char *uuid_b);
 132
 133 #else
 134 #error "Babeltrace needs to have a UUID generator configured."
 135 #endif
 136
 137 #endif /* _BABELTRACE_COMPAT_UUID_H */