network_cmds/rtadvd.tproj/rtadvd_logging.c

   1 /*
   2  * Copyright (c) 2019 Apple Inc. All rights reserved.
   3  *
   4  * This document is the property of Apple Inc.
   5  * It is considered confidential and proprietary.
   6  *
   7  * This document may not be reproduced or transmitted in any form,
   8  * in whole or in part, without the express written permission of
   9  * Apple Inc.
  10  */
  11 #include <assert.h>
  12 #include <os/log_private.h>
  13
  14 #define kRtadvdLoggerID        "com.apple.rtadvd"
  15 static os_log_t rtadvdLogger = NULL;                        /* Handle for Logger */
  16
  17 static boolean_t rtadvd_logger_create(void);
  18
  19 static boolean_t
  20 rtadvd_logger_create(void)
  21 {
  22     assert(rtadvdLogger == NULL);
  23     rtadvdLogger = os_log_create(kRtadvdLoggerID, "daemon");
  24
  25     if (rtadvdLogger == NULL) {
  26         os_log_error(OS_LOG_DEFAULT, "Couldn't create os log object");
  27     }
  28
  29     return (rtadvdLogger != NULL);
  30 }
  31
  32 void
  33 rtadvdLog(int level, const char *format, ...)
  34 {
  35     va_list args;
  36
  37     if (rtadvdLogger == NULL && !rtadvd_logger_create()) {
  38         return;
  39     }
  40
  41     va_start(args, format);
  42     os_log_with_args(rtadvdLogger, level, format, args, __builtin_return_address(0));
  43     va_end(args);
  44     return;
  45 }