libsyscall/wrappers/_libkernel_init.h

   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 #ifndef __LIBKERNEL_INIT_H
  30 #define __LIBKERNEL_INIT_H
  31
  32 #include <mach/mach.h>
  33
  34 typedef struct _libkernel_functions {
  35         /* for mach dependencies on libc */
  36         mach_port_t (*get_reply_port)(void);
  37         void (*set_reply_port)(mach_port_t);
  38
  39         /* dlsym() for looking up catch_exception_raise */
  40         void* (*dlsym)(void*, const char*);
  41
  42         /* placeholders for struct layout compatibility with Libsystem */
  43         void *_placeholder_1;
  44         void *_placeholder_2;
  45
  46         /* for setting errno in libc */
  47         void (*set_errno)(int);
  48         int* (*get_errno)(void);
  49
  50 } _libkernel_functions_t;
  51
  52 void _libkernel_init(_libkernel_functions_t fns);
  53
  54 #endif // __LIBKERNEL_INIT_H`