libsyscall/wrappers/_libkernel_init.c

   1 /*
   2  * Copyright (c) 2010 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <TargetConditionals.h>
  30 #include <stdbool.h>
  31 #include <strings.h>
  32 #include <unistd.h>
  33 #include "_libkernel_init.h"
  34
  35 extern int mach_init(void);
  36
  37 #if TARGET_OS_OSX
  38 __attribute__((visibility("default")))
  39 extern bool _os_xbs_chrooted;
  40 bool _os_xbs_chrooted;
  41 #endif
  42
  43 /* dlsym() funcptr is for legacy support in exc_catcher */
  44 void* (*_dlsym)(void*, const char*) __attribute__((visibility("hidden")));
  45
  46 __attribute__((visibility("hidden")))
  47 _libkernel_functions_t _libkernel_functions;
  48
  49
  50 void
  51 __libkernel_init(_libkernel_functions_t fns,
  52     const char *envp[] __attribute__((unused)),
  53     const char *apple[] __attribute__((unused)),
  54     const struct ProgramVars *vars __attribute__((unused)))
  55 {
  56         _libkernel_functions = fns;
  57         if (fns->dlsym) {
  58                 _dlsym = fns->dlsym;
  59         }
  60         mach_init();
  61 }