osfmk/kern/kmod.c

   1 /*
   2  * Copyright (c) 2000-2008 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  * NOTICE: This file was modified by McAfee Research in 2004 to introduce
  30  * support for mandatory and extensible security protections.  This notice
  31  * is included in support of clause 2.2 (b) of the Apple Public License,
  32  * Version 2.0.
  33  */
  34 /*
  35  * Copyright (c) 1999 Apple Inc.  All rights reserved.
  36  *
  37  * HISTORY
  38  *
  39  * 1999 Mar 29 rsulack created.
  40  */
  41
  42 #include <mach/mach_types.h>
  43 #include <mach/vm_types.h>
  44 #include <mach/kern_return.h>
  45 #include <mach/host_priv_server.h>
  46 #include <mach/vm_map.h>
  47
  48 #include <kern/kern_types.h>
  49 #include <kern/thread.h>
  50
  51 #include <vm/vm_kern.h>
  52
  53 #include <libkern/kernel_mach_header.h>
  54
  55 /*********************************************************************
  56 **********************************************************************
  57 ***           KMOD INTERFACE DEPRECATED AS OF SNOWLEOPARD          ***
  58 **********************************************************************
  59 **********************************************************************
  60 * Except for kmod_get_info(), which continues to work for K32 with
  61 * 32-bit clients, all remaining functions in this module remain
  62 * for symbol linkage or MIG support only,
  63 * and return KERN_NOT_SUPPORTED.
  64 *
  65 * Some kernel-internal portions have been moved to
  66 * libkern/OSKextLib.cpp and libkern/c++/OSKext.cpp.
  67 **********************************************************************/
  68
  69 // bsd/sys/proc.h
  70 extern void proc_selfname(char * buf, int size);
  71
  72 #define NOT_SUPPORTED_USER64()    \
  73     do { \
  74         char procname[64] = "unknown";  \
  75         proc_selfname(procname, sizeof(procname));  \
  76         printf("%s is not supported for 64-bit clients (called from %s)\n",  \
  77             __FUNCTION__, procname);  \
  78     } while (0)
  79
  80 #define NOT_SUPPORTED_KERNEL()    \
  81     do { \
  82         char procname[64] = "unknown";  \
  83         proc_selfname(procname, sizeof(procname));  \
  84         printf("%s is not supported on this kernel architecture (called from %s)\n",  \
  85             __FUNCTION__, procname);  \
  86     } while (0)
  87
  88 #if __ppc__ || __i386__
  89 // in libkern/OSKextLib.cpp
  90 extern kern_return_t kext_get_kmod_info(
  91     kmod_info_array_t      * kmod_list,
  92     mach_msg_type_number_t * kmodCount);
  93 #define KMOD_MIG_UNUSED
  94 #else
  95 #define KMOD_MIG_UNUSED __unused
  96 #endif /* __ppc__ || __i386__ */
  97
  98
  99 /*********************************************************************
 100 * Old MIG routines that are no longer supported.
 101 **********************************************************************
 102 * We have to keep these around for ppc, i386, and x86_64. A 32-bit
 103 * user-space client might call into the 64-bit kernel. Only
 104 * kmod_get_info() retains a functional implementation (ppc/i386).
 105 **********************************************************************/
 106 kern_return_t
 107 kmod_create(
 108     host_priv_t   host_priv __unused,
 109     vm_address_t  addr __unused,
 110     kmod_t      * id __unused)
 111 {
 112     NOT_SUPPORTED_KERNEL();
 113     return KERN_NOT_SUPPORTED;
 114 }
 115
 116 /********************************************************************/
 117 kern_return_t
 118 kmod_destroy(
 119     host_priv_t host_priv __unused,
 120      kmod_t     id __unused)
 121 {
 122     NOT_SUPPORTED_KERNEL();
 123     return KERN_NOT_SUPPORTED;
 124 }
 125
 126 /********************************************************************/
 127 kern_return_t
 128 kmod_control(
 129     host_priv_t              host_priv __unused,
 130     kmod_t                   id __unused,
 131     kmod_control_flavor_t    flavor __unused,
 132     kmod_args_t            * data __unused,
 133     mach_msg_type_number_t * dataCount __unused)
 134 {
 135     NOT_SUPPORTED_KERNEL();
 136     return KERN_NOT_SUPPORTED;
 137 };
 138
 139 /********************************************************************/
 140 kern_return_t
 141 kmod_get_info(
 142     host_t host __unused,
 143     kmod_info_array_t * kmod_list KMOD_MIG_UNUSED,
 144     mach_msg_type_number_t * kmodCount KMOD_MIG_UNUSED);
 145 kern_return_t
 146 kmod_get_info(
 147     host_t host __unused,
 148     kmod_info_array_t * kmod_list KMOD_MIG_UNUSED,
 149     mach_msg_type_number_t * kmodCount KMOD_MIG_UNUSED)
 150 {
 151 #if __ppc__ || __i386__
 152     if (current_task() != kernel_task && task_has_64BitAddr(current_task())) {
 153         NOT_SUPPORTED_USER64();
 154         return KERN_NOT_SUPPORTED;
 155     }
 156     return kext_get_kmod_info(kmod_list, kmodCount);
 157 #else
 158     NOT_SUPPORTED_KERNEL();
 159     return KERN_NOT_SUPPORTED;
 160 #endif /* __ppc__ || __i386__ */
 161 }