include/babeltrace/uuid.h

   1 #ifndef _BABELTRACE_UUID_H
   2 #define _BABELTRACE_UUID_H
   3
   4 /*
   5  * Copyright (C) 2011   Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  *
   7  * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
   8  * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
   9  *
  10  * Permission is hereby granted to use or copy this program
  11  * for any purpose,  provided the above notices are retained on all copies.
  12  * Permission to modify the code and to distribute modified code is granted,
  13  * provided the above notices are retained, and a notice that the code was
  14  * modified is included with the above copyright notice.
  15  */
  16
  17 #include <config.h>
  18
  19 /* Includes final \0. */
  20 #define BABELTRACE_UUID_STR_LEN         37
  21 #define BABELTRACE_UUID_LEN             16
  22
  23 #ifdef BABELTRACE_HAVE_LIBUUID
  24 #include <uuid/uuid.h>
  25
  26 static inline
  27 int babeltrace_uuid_generate(unsigned char *uuid_out)
  28 {
  29         uuid_generate(uuid_out);
  30         return 0;
  31 }
  32
  33 static inline
  34 void babeltrace_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  35 {
  36         return uuid_unparse(uuid_in, str_out);
  37 }
  38
  39 static inline
  40 int babeltrace_uuid_parse(const char *str_in, unsigned char *uuid_out)
  41 {
  42         return uuid_parse(str_in, uuid_out);
  43 }
  44
  45 static inline
  46 int babeltrace_uuid_compare(const unsigned char *uuid_a,
  47                 const unsigned char *uuid_b)
  48 {
  49         return uuid_compare(uuid_a, uuid_b);
  50 }
  51
  52 #elif defined(BABELTRACE_HAVE_LIBC_UUID)
  53 #include <uuid.h>
  54 #include <stdint.h>
  55
  56 static inline
  57 int babeltrace_uuid_generate(unsigned char *uuid_out)
  58 {
  59         uint32_t status;
  60
  61         uuid_create((uuid_t *) uuid_out, &status);
  62         if (status == uuid_s_ok)
  63                 return 0;
  64         else
  65                 return -1;
  66 }
  67
  68 static inline
  69 void babeltrace_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  70 {
  71         uint32_t status;
  72
  73         uuid_to_string((uuid_t *) uuid_in, str_out, &status);
  74         if (status == uuid_s_ok)
  75                 return 0;
  76         else
  77                 return -1;
  78 }
  79
  80 static inline
  81 int babeltrace_uuid_parse(const char *str_in, unsigned char *uuid_out)
  82 {
  83         uint32_t status;
  84
  85         uuid_from_string(str_in, (uuid_t *) uuid_out, &status);
  86         if (status == uuid_s_ok)
  87                 return 0;
  88         else
  89                 return -1;
  90 }
  91
  92 static inline
  93 int babeltrace_uuid_compare(const unsigned char *uuid_a,
  94                 const unsigned char *uuid_b)
  95 {
  96         uint32_t status;
  97
  98         uuid_compare((uuid_t *) uuid_a, (uuid_t *) uuid_b, &status);
  99         if (status == uuid_s_ok)
 100                 return 0;
 101         else
 102                 return -1;
 103 }
 104
 105 #else
 106 #error "Babeltrace needs to have a UUID generator configured."
 107 #endif
 108
 109 #endif /* _BABELTRACE_UUID_H */