xnu-7195.101.1.tar.gz

[apple/xnu.git] / libkern / kmod / c_start.c

diff --git a/libkern/kmod/c_start.c b/libkern/kmod/c_start.c
index 069927368b88b59eed1ab381d20286c138ac75ac..a694750e4d8051088b72e69bcb91d001ed136715 100644 (file)
--- a/libkern/kmod/c_start.c
+++ b/libkern/kmod/c_start.c
@@ -1,15 +1,20 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *

  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in

- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *

  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,


@@ -17,35 +22,65 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
- * @APPLE_LICENSE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  */
 /*

-    Subtle combination of files and libraries make up the C++ runtime system for kernel modules.  We are dependant on the KernelModule kmod.make and CreateKModInfo.perl scripts to be exactly instep with both this library module and the libkmod module as well.
-
-    If you do any maintenance on any of the following files make sure great care is taken to keep them in Sync.
-    KernelModule.bproj/kmod.make
-    KernelModule.bproj/CreateKModInfo.perl
-    KernelModule.bproj/kmodc++/pure.c
-    KernelModule.bproj/kmodc++/cplus_start.c
-    KernelModule.bproj/kmodc++/cplus_start.c
-    KernelModule.bproj/kmodc/c_start.c
-    KernelModule.bproj/kmodc/c_stop.c
-
-    The trick is that the linkline links all of the developers modules.  If any static constructors are used .constructors_used will be left as an undefined symbol.  This symbol is exported by the cplus_start.c routine which automatically brings in the appropriate C++ _start routine.  However the actual _start symbol is only required by the kmod_info structure that is created and initialized by the CreateKModInfo.perl script.  If no C++ was used the _start will be an undefined symbol that is finally satisfied by the c_start module in the kmod library.
-
-    The linkline must look like this.
-        *.o -lkmodc++ kmod_info.o -lkmod
+ *   Subtle combination of files and libraries make up the C++ runtime system for kernel modules.  We are dependant on the KernelModule kmod.make and CreateKModInfo.perl scripts to be exactly instep with both this library module and the libkmod module as well.
+ *
+ *   If you do any maintenance on any of the following files make sure great care is taken to keep them in Sync.
+ *   KernelModule.bproj/kmod.make
+ *   KernelModule.bproj/CreateKModInfo.perl
+ *   KernelModule.bproj/kmodc++/pure.c
+ *   KernelModule.bproj/kmodc++/cplus_start.c
+ *   KernelModule.bproj/kmodc++/cplus_start.c
+ *   KernelModule.bproj/kmodc/c_start.c
+ *   KernelModule.bproj/kmodc/c_stop.c
+ *
+ *   The trick is that the linkline links all of the developers modules.  If any static constructors are used .constructors_used will be left as an undefined symbol.  This symbol is exported by the cplus_start.c routine which automatically brings in the appropriate C++ _start routine.  However the actual _start symbol is only required by the kmod_info structure that is created and initialized by the CreateKModInfo.perl script.  If no C++ was used the _start will be an undefined symbol that is finally satisfied by the c_start module in the kmod library.
+ *
+ *   The linkline must look like this.
+ *.o -lkmodc++ kmod_info.o -lkmod

  */
 #include <mach/mach_types.h>
  */
 #include <mach/mach_types.h>

+#include <libkern/OSKextLib.h>

 
 // These global symbols will be defined by CreateInfo script's info.c file.
 extern kmod_start_func_t *_realmain;
 
 // These global symbols will be defined by CreateInfo script's info.c file.
 extern kmod_start_func_t *_realmain;

+extern kmod_info_t KMOD_INFO_NAME;
+
+/*********************************************************************
+*********************************************************************/
+__private_extern__ kern_return_t
+_start(kmod_info_t *ki, void *data)
+{
+       if (_realmain) {
+               return (*_realmain)(ki, data);
+       } else {
+               return KERN_SUCCESS;
+       }
+}
+
+/*********************************************************************
+*********************************************************************/
+__private_extern__ const char *
+OSKextGetCurrentIdentifier(void)
+{
+       return KMOD_INFO_NAME.name;
+}
+
+/*********************************************************************
+*********************************************************************/
+__private_extern__ const char *
+OSKextGetCurrentVersionString(void)
+{
+       return KMOD_INFO_NAME.version;
+}

 
 

-__private_extern__ kern_return_t _start(kmod_info_t *ki, void *data)
+/*********************************************************************
+*********************************************************************/
+__private_extern__ OSKextLoadTag
+OSKextGetCurrentLoadTag(void)

 {
 {

-    if (_realmain)
-        return (*_realmain)(ki, data);
-    else
-        return KERN_SUCCESS;
+       return (OSKextLoadTag)KMOD_INFO_NAME.id;

 }
 }