tools/thermal/lib/log.c

   1 // SPDX-License-Identifier: LGPL-2.1+
   2 // Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
   3 #include <stdarg.h>
   4 #include <stdio.h>
   5 #include <string.h>
   6 #include <syslog.h>
   7 #include "log.h"
   8
   9 static const char *__ident = "unknown";
  10 static int __options;
  11
  12 static const char * const loglvl[] = {
  13         [LOG_DEBUG]     = "DEBUG",
  14         [LOG_INFO]      = "INFO",
  15         [LOG_NOTICE]    = "NOTICE",
  16         [LOG_WARNING]   = "WARN",
  17         [LOG_ERR]       = "ERROR",
  18         [LOG_CRIT]      = "CRITICAL",
  19         [LOG_ALERT]     = "ALERT",
  20         [LOG_EMERG]     = "EMERG",
  21 };
  22
  23 int log_str2level(const char *lvl)
  24 {
  25         int i;
  26
  27         for (i = 0; i < sizeof(loglvl) / sizeof(loglvl[LOG_DEBUG]); i++)
  28                 if (!strcmp(lvl, loglvl[i]))
  29                         return i;
  30
  31         return LOG_DEBUG;
  32 }
  33
  34 extern void logit(int level, const char *format, ...)
  35 {
  36         va_list args;
  37
  38         va_start(args, format);
  39
  40         if (__options & TO_SYSLOG)
  41                 vsyslog(level, format, args);
  42
  43         if (__options & TO_STDERR)
  44                 vfprintf(stderr, format, args);
  45
  46         if (__options & TO_STDOUT)
  47                 vfprintf(stdout, format, args);
  48
  49         va_end(args);
  50 }
  51
  52 int log_init(int level, const char *ident, int options)
  53 {
  54         if (!options)
  55                 return -1;
  56
  57         if (level > LOG_DEBUG)
  58                 return -1;
  59
  60         if (!ident)
  61                 return -1;
  62
  63         __ident = ident;
  64         __options = options;
  65
  66         if (options & TO_SYSLOG) {
  67                 openlog(__ident, options | LOG_NDELAY, LOG_USER);
  68                 setlogmask(LOG_UPTO(level));
  69         }
  70
  71         return 0;
  72 }
  73
  74 void log_exit(void)
  75 {
  76         closelog();
  77 }