libsyscall/wrappers/system-version-compat-support.c

   1 /*
   2  * Copyright (c) 2020 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 #include <TargetConditionals.h>
  29
  30 #if TARGET_OS_OSX && !defined(__i386__)
  31
  32 /*
  33  * Support for the open compatibilty shim for macOS. These NULL
  34  * function pointers need to be built into libsyscall_static. They
  35  * are hooked up to the actual functions from libsyscall_dynamic
  36  * if/when they are used (generally only for older binaries where we
  37  * need to shim the version information).
  38  */
  39
  40 #include "system-version-compat-support.h"
  41 #include <stdbool.h>
  42 #include <sys/param.h>
  43 #include <sys/types.h>
  44
  45 __attribute__((visibility("hidden")))
  46 bool (*system_version_compat_check_path_suffix)(const char *orig_path) = NULL;
  47 system_version_compat_mode_t system_version_compat_mode = SYSTEM_VERSION_COMPAT_MODE_DISABLED;
  48
  49 __attribute__((visibility("hidden")))
  50 int (*system_version_compat_open_shim)(int opened_fd, int openat_fd, const char *orig_path, int oflag, mode_t mode,
  51     int (*close_syscall)(int), int (*open_syscall)(const char *, int, mode_t),
  52     int (*openat_syscall)(int, const char *, int, mode_t),
  53     int (*fcntl_syscall)(int, int, long)) = NULL;
  54 #endif /* TARGET_OS_OSX && && !defined(__i386__) */