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 <stdarg.h>
  13 #include <os/log_private.h>
  14
  15 #define kRtadvdLoggerID        "com.apple.rtadvd"
  16 static os_log_t rtadvdLogger = NULL;                        /* Handle for Logger */
  17
  18 static boolean_t rtadvd_logger_create(void);
  19
  20 static boolean_t
  21 rtadvd_logger_create(void)
  22 {
  23     assert(rtadvdLogger == NULL);
  24     rtadvdLogger = os_log_create(kRtadvdLoggerID, "daemon");
  25
  26     if (rtadvdLogger == NULL) {
  27         os_log_error(OS_LOG_DEFAULT, "Couldn't create os log object");
  28     }
  29
  30     return (rtadvdLogger != NULL);
  31 }
  32
  33 void
  34 rtadvdLog(int level, const char *format, ...)
  35 {
  36     va_list args;
  37
  38     if (rtadvdLogger == NULL && !rtadvd_logger_create()) {
  39         return;
  40     }
  41
  42     va_start(args, format);
  43     os_log_with_args(rtadvdLogger, level, format, args, __builtin_return_address(0));
  44     va_end(args);
  45     return;
  46 }