bfdd/log.c

   1 /*********************************************************************
   2  * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the Free
   6  * Software Foundation; either version 2 of the License, or (at your option)
   7  * any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; see the file COPYING; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17  *
  18  * log.c: implements an abstraction between loggers interface. Implement all
  19  * log backends in this file.
  20  *
  21  * Authors
  22  * -------
  23  * Rafael Zalamena <rzalamena@opensourcerouting.org>
  24  */
  25
  26 #include <zebra.h>
  27
  28 #include "bfd.h"
  29
  30 #include "lib/log_int.h"
  31
  32 void log_msg(int level, const char *fmt, va_list vl);
  33
  34
  35 static int log_fg;
  36 static int log_level = BLOG_DEBUG;
  37
  38 void log_init(int foreground, enum blog_level level,
  39               struct frr_daemon_info *fdi)
  40 {
  41         log_fg = foreground;
  42         log_level = level;
  43
  44         openzlog(fdi->progname, fdi->logname, 0,
  45                  LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON);
  46 }
  47
  48 void log_msg(int level, const char *fmt, va_list vl)
  49 {
  50         if (level < log_level)
  51                 return;
  52
  53         switch (level) {
  54         case BLOG_DEBUG:
  55                 vzlog(LOG_DEBUG, fmt, vl);
  56                 break;
  57
  58         case BLOG_INFO:
  59                 vzlog(LOG_INFO, fmt, vl);
  60                 break;
  61
  62         case BLOG_WARNING:
  63                 vzlog(LOG_WARNING, fmt, vl);
  64                 break;
  65
  66         case BLOG_ERROR:
  67                 vzlog(LOG_ERR, fmt, vl);
  68                 break;
  69
  70         case BLOG_FATAL:
  71                 vzlog(LOG_EMERG, fmt, vl);
  72                 break;
  73
  74         default:
  75                 vfprintf(stderr, fmt, vl);
  76                 break;
  77         }
  78 }
  79
  80 void log_info(const char *fmt, ...)
  81 {
  82         va_list vl;
  83
  84         va_start(vl, fmt);
  85         log_msg(BLOG_INFO, fmt, vl);
  86         va_end(vl);
  87 }
  88
  89 void log_debug(const char *fmt, ...)
  90 {
  91         va_list vl;
  92
  93         va_start(vl, fmt);
  94         log_msg(BLOG_DEBUG, fmt, vl);
  95         va_end(vl);
  96 }
  97
  98 void log_error(const char *fmt, ...)
  99 {
 100         va_list vl;
 101
 102         va_start(vl, fmt);
 103         log_msg(BLOG_ERROR, fmt, vl);
 104         va_end(vl);
 105 }
 106
 107 void log_warning(const char *fmt, ...)
 108 {
 109         va_list vl;
 110
 111         va_start(vl, fmt);
 112         log_msg(BLOG_WARNING, fmt, vl);
 113         va_end(vl);
 114 }
 115
 116 void log_fatal(const char *fmt, ...)
 117 {
 118         va_list vl;
 119
 120         va_start(vl, fmt);
 121         log_msg(BLOG_FATAL, fmt, vl);
 122         va_end(vl);
 123
 124         exit(1);
 125 }