winsup/cygserver/bsd_log.cc

   1 /* bsd_log.cc
   2
   3    Copyright 2003, 2004 Red Hat Inc.
   4
   5 This file is part of Cygwin.
   6
   7 This software is a copyrighted work licensed under the terms of the
   8 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
   9 details. */
  10 #ifdef __OUTSIDE_CYGWIN__
  11 #include "woutsup.h"
  12 #define _KERNEL 1
  13 #define __BSD_VISIBLE 1
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16
  17 long log_level = 8; /* Illegal value.  Don't change! */
  18 tun_bool_t log_debug = TUN_UNDEF;
  19 tun_bool_t log_syslog = TUN_UNDEF;
  20 tun_bool_t log_stderr = TUN_UNDEF;
  21
  22 void
  23 loginit (tun_bool_t opt_stderr, tun_bool_t opt_syslog)
  24 {
  25   if (log_debug == TUN_UNDEF)
  26     TUNABLE_BOOL_FETCH ("kern.log.debug", &log_debug);
  27   if (log_debug == TUN_UNDEF)
  28     log_debug = TUN_FALSE;
  29
  30   if (opt_stderr != TUN_UNDEF)
  31     log_stderr = opt_stderr;
  32   else
  33     TUNABLE_BOOL_FETCH ("kern.log.stderr", &log_stderr);
  34   if (log_stderr == TUN_UNDEF)
  35     log_stderr = TUN_FALSE;
  36
  37   if (opt_syslog != TUN_UNDEF)
  38     log_syslog = opt_syslog;
  39   else
  40     TUNABLE_BOOL_FETCH ("kern.log.syslog", &log_syslog);
  41   if (log_syslog == TUN_UNDEF)
  42     log_syslog = TUN_FALSE;
  43
  44   if (log_level == 8)
  45     TUNABLE_INT_FETCH ("kern.log.level", &log_level);
  46   if (log_level == 8)
  47     log_level = 6;
  48 }
  49
  50 void
  51 _vlog (const char *file, int line, int level,
  52         const char *fmt, va_list ap)
  53 {
  54   char buf[16384];
  55   char *pos;
  56
  57   if ((level == LOG_DEBUG && log_debug != TUN_TRUE)
  58       || (level != LOG_DEBUG && level >= log_level))
  59     return;
  60   pos = stpcpy (buf, "cygserver: ");
  61   if (file && log_debug == TUN_TRUE)
  62     pos += snprintf (pos, 16384 - (pos - buf), "%s, line %d: ", file, line);
  63   vsnprintf (pos, 16384 - (pos - buf), fmt, ap);
  64   if (log_syslog == TUN_TRUE && level != LOG_DEBUG)
  65     syslog (level, buf);
  66   if (log_stderr == TUN_TRUE || level == LOG_DEBUG)
  67     {
  68       fputs (buf, stderr);
  69       fputc ('\n', stderr);
  70     }
  71 }
  72
  73 void
  74 _log (const char *file, int line, int level, const char *fmt, ...)
  75 {
  76   va_list ap;
  77   va_start (ap, fmt);
  78   _vlog (file, line, level, fmt, ap);
  79 }
  80
  81 void
  82 _vpanic (const char *file, int line, const char *fmt, va_list ap)
  83 {
  84   _vlog (file, line, LOG_CRIT, fmt, ap);
  85   exit (1);
  86 }
  87
  88 void
  89 _panic (const char *file, int line, const char *fmt, ...)
  90 {
  91   va_list ap;
  92   va_start (ap, fmt);
  93   _vpanic (file, line, fmt, ap);
  94 }
  95 #endif /* __OUTSIDE_CYGWIN__ */