src/logging_syslog.c

   1 /* Syslog logging support code */
   2
   3 /* (C) 2011 by Harald Welte <laforge@gnumonks.org>
   4  * All Rights Reserved
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 /*! \addtogroup logging
  23  *  @{
  24  */
  25
  26 /*! \file logging_syslog.c */
  27
  28 #include "../config.h"
  29
  30 #ifdef HAVE_SYSLOG_H
  31
  32 #include <stdarg.h>
  33 #include <stdlib.h>
  34 #include <stdio.h>
  35 #include <string.h>
  36 #include <syslog.h>
  37
  38 #ifdef HAVE_STRINGS_H
  39 #include <strings.h>
  40 #endif
  41
  42 #include <osmocom/core/talloc.h>
  43 #include <osmocom/core/utils.h>
  44 #include <osmocom/core/logging.h>
  45
  46 static int logp2syslog_level(unsigned int level)
  47 {
  48         if (level >= LOGL_FATAL)
  49                 return LOG_CRIT;
  50         else if (level >= LOGL_ERROR)
  51                 return LOG_ERR;
  52         else if (level >= LOGL_NOTICE)
  53                 return LOG_NOTICE;
  54         else if (level >= LOGL_INFO)
  55                 return LOG_INFO;
  56         else
  57                 return LOG_DEBUG;
  58 }
  59
  60 static void _syslog_output(struct log_target *target,
  61                            unsigned int level, const char *log)
  62 {
  63         syslog(logp2syslog_level(level), "%s", log);
  64 }
  65
  66 /*! \brief Create a new logging target for syslog logging
  67  *  \param[in] ident syslog string identifier
  68  *  \param[in] option syslog options
  69  *  \param[in] facility syslog facility
  70  *  \returns Log target in case of success, NULL in case of error
  71  */
  72 struct log_target *log_target_create_syslog(const char *ident, int option,
  73                                             int facility)
  74 {
  75         struct log_target *target;
  76
  77         target = log_target_create();
  78         if (!target)
  79                 return NULL;
  80
  81         target->tgt_syslog.facility = facility;
  82         target->type = LOG_TGT_TYPE_SYSLOG;
  83         target->output = _syslog_output;
  84
  85         openlog(ident, option, facility);
  86
  87         return target;
  88 }
  89
  90 #endif /* HAVE_SYSLOG_H */
  91
  92 /* @} */