1  /*
 2   * Copyright (c) 2010 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   * _libc_fork_child() is called from Libsystem's libSystem_atfork_child()
25   */
26  #include <TargetConditionals.h>
27  #if __has_include(<CrashReporterClient.h>)
28  #include <CrashReporterClient.h>
29  #else
30  #define CRSetCrashLogMessage(...)
31  #endif
32  
33  #pragma clang diagnostic push
34  #pragma clang diagnostic ignored "-Wstrict-prototypes"
35  
36  extern void _arc4_fork_child();
37  extern void _init_clock_port(void);
38  extern void __environ_lock_fork_child();
39  
40  void _libc_fork_child(void); // todo: private_extern?
41  void
42  _libc_fork_child(void)
43  {
44  	CRSetCrashLogMessage("crashed on child side of fork pre-exec");
45  
46  	_arc4_fork_child();
47  	_init_clock_port();
48  	__environ_lock_fork_child();
49  }
50  #pragma clang diagnostic pop