src/log.h

   1 /*======================================================================*
   2  * Copyright (C) 2008 Light Weight Event System                         *
   3  * All rights reserved.                                                 *
   4  *                                                                      *
   5  * This program is free software; you can redistribute it and/or modify *
   6  * it under the terms of the GNU General Public License as published by *
   7  * the Free Software Foundation; either version 2 of the License, or    *
   8  * (at your option) any later version.                                  *
   9  *                                                                      *
  10  * This program is distributed in the hope that it will be useful,      *
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  13  * GNU General Public License for more details.                         *
  14  *                                                                      *
  15  * You should have received a copy of the GNU General Public License    *
  16  * along with this program; if not, write to the Free Software          *
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                   *
  18  * Boston, MA 02110-1301 USA.                                           *
  19  *======================================================================*/
  20 #ifndef LOG_H
  21 #define LOG_H
  22
  23 #include "config.h"
  24
  25 #include <stdarg.h>
  26
  27 #ifdef HAVE_SYS_TYPES_H
  28 #include <sys/types.h>
  29 #endif
  30
  31 #ifdef HAVE_SYSLOG_H
  32 #include <syslog.h>
  33 #else
  34 #define LOG_EMERG       0       /* system is unusable */
  35 #define LOG_ALERT       1       /* action must be taken immediately */
  36 #define LOG_CRIT        2       /* critical conditions */
  37 #define LOG_ERR         3       /* error conditions */
  38 #define LOG_WARNING     4       /* warning conditions */
  39 #define LOG_NOTICE      5       /* normal but significant condition */
  40 #define LOG_INFO        6       /* informational */
  41 #define LOG_DEBUG       7       /* debug-level messages */
  42 #endif
  43
  44 enum {
  45     off, error, warning, info, progress
  46 };
  47
  48 #define LOG_MASK_OFF            (1<<off)
  49 #define LOG_MASK_ERROR          (1<<error)
  50 #define LOG_MASK_WARNING        (1<<warning)
  51 #define LOG_MASK_INFO           (1<<info)
  52 #define LOG_MASK_PROGRESS       (1<<progress)
  53
  54 /*! \file log.h
  55  *  \brief Functions for logging within the journaller
  56  */
  57
  58 /*! \brief Logs a message
  59  *
  60  *  This method is not usually called directly, instead one of the
  61  *  logging macros is used.
  62  *
  63  *  \param[in] level the syslog level to log
  64  *  \param[in] fname the filename logging this message
  65  *  \param[in] lineno the line number of the file logging this message
  66  *  \param[in] format the format of the message
  67  */
  68 void log_msg(int level, const char *fname, int lineno, const char* format, ...);
  69 void log_get_level_string(char* str, int len);
  70
  71 #if defined(HAVE_GCC_MACRO_VARARGS) || defined(HAVE_GNUC_C_VARARGS)
  72 #define LOG_ER(args...)       log_msg(LOG_MASK_ERROR,    __FILE__, __LINE__, args)
  73 #define LOG_WARN(args...)     log_msg(LOG_MASK_WARNING,  __FILE__, __LINE__, args)
  74 #define LOG_INF(args...)      log_msg(LOG_MASK_INFO,     __FILE__, __LINE__, args)
  75 #define LOG_PROG(args...)     log_msg(LOG_MASK_PROGRESS, __FILE__, __LINE__, args)
  76 #elif defined(HAVE_ISO_MACRO_VARARGS) || defined(HAVE_ISO_C_VARARGS)
  77 #define LOG_ER(...)           log_msg(LOG_MASK_ERROR,    __FILE__, __LINE__, __VA_ARGS__)
  78 #define LOG_WARN(...)         log_msg(LOG_MASK_WARNING,  __FILE__, __LINE__, __VA_ARGS__)
  79 #define LOG_INF(...)          log_msg(LOG_MASK_INFO,     __FILE__, __LINE__, __VA_ARGS__)
  80 #define LOG_PROG(...)         log_msg(LOG_MASK_PROGRESS, __FILE__, __LINE__, __VA_ARGS__)
  81 #else
  82 #error You must have some type (either ISO-C99 or GCC style) of variable argument list for macros.
  83 #endif
  84
  85 #endif