sys/settimeofday.c

   1 /*
   2  * Copyright (c) 2008 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include <TargetConditionals.h>
  25 #if !TARGET_OS_DRIVERKIT
  26 #include <notify.h>
  27 #include <notify_keys.h>
  28 #else
  29 #define notify_post(...)
  30 #endif
  31 #include <sys/time.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include "_simple.h"
  35
  36 #ifndef kNotifyClockSet
  37 #define kNotifyClockSet "com.apple.system.clock_set"
  38 #endif
  39
  40 int __settimeofday(const struct timeval *tp, const struct timezone *tzp);
  41
  42 /*
  43  * settimeofday stub, legacy version
  44  */
  45 int
  46 settimeofday(const struct timeval *tp, const struct timezone *tzp)
  47 {
  48         int ret = __settimeofday(tp, tzp);
  49         if (ret == 0) notify_post(kNotifyClockSet);
  50
  51         if (tp) {
  52                 char *msg = NULL;
  53                 asprintf(&msg, "settimeofday({%#lx,%#x}) == %d", tp->tv_sec, tp->tv_usec, ret);
  54                 _simple_asl_log(ASL_LEVEL_NOTICE, "com.apple.settimeofday", msg);
  55                 free(msg);
  56         }
  57
  58         return ret;
  59 }