src/log.c

   1 /** \ingroup contrac
   2  * @file
   3  * @author      David Llewellyn-Jones
   4  * @version     $(VERSION)
   5  *
   6  * @section LICENSE
   7  *
   8  *
   9  *
  10  * @brief
  11  * @section DESCRIPTION
  12  *
  13  *
  14  *
  15  */
  16
  17 // Includes
  18
  19 #include <time.h>
  20 #include <stdio.h>
  21 #include <stdarg.h>
  22 #include <malloc.h>
  23
  24 #include "contrac/log.h"
  25
  26 // Defines
  27
  28 // Structures
  29
  30 // Function prototypes
  31
  32 /**
  33  * Log a string to syslog.
  34  *
  35  * In generl, the LOG macro should be used instead.
  36  *
  37  * Constructs a message using the supplied format and parameters and records it
  38  * in the system log. The format is the same as for printf.
  39  *
  40  * The logging levels are the standard syslog levels:
  41  *
  42  * LOG_DEBUG, LOG_INFO, LOG_WARNING, LOG_ERR, etc.
  43  *
  44  * @param priority The log level priority.
  45  * @param format The format for the message, the same as for printf.
  46  * @param ... parameters to combine with the format to create the message.
  47  */
  48 void log_priority(int priority, const char *format, ...) {
  49         va_list args;
  50         int length;
  51         char *buffer;
  52
  53         va_start(args, format);
  54         length = vsnprintf(NULL, 0, format, args);
  55         va_end(args);
  56
  57         buffer = malloc(sizeof(char) * (length + 1));
  58
  59         va_start(args, format);
  60         length = vsnprintf(buffer, length + 1, format, args);
  61         va_end(args);
  62         buffer[length] = 0;
  63
  64         syslog(priority, "%s", buffer);
  65 }
  66
  67 // Function definitions
  68