xnu-6153.41.3.tar.gz

[apple/xnu.git] / iokit / IOKit / IOCommand.h

diff --git a/iokit/IOKit/IOCommand.h b/iokit/IOKit/IOCommand.h
index f6e58d2e052695afaa152590f88bc7511d66f644..6cfd848c99dca887593c49facf9a813b4ab9cd1d 100644 (file)
--- a/iokit/IOKit/IOCommand.h
+++ b/iokit/IOKit/IOCommand.h
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2019 Apple Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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
+ * 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,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 /*
@@ -50,8 +56,6 @@
 #include <kern/queue.h>
 #include <libkern/c++/OSObject.h>
 
-class IOCommandPool;
-
 /*!
  * @class IOCommand
  * @abstract
@@ -61,20 +65,19 @@ class IOCommandPool;
  * from a device driver to a controller. All controller commands (e.g. IOATACommand)
  * should inherit from this class.
  */
- 
+
 class IOCommand : public OSObject
 {
-    OSDeclareAbstractStructors(IOCommand)
-    
-protected:
-    virtual bool init(void);
-    
+       OSDeclareDefaultStructors(IOCommand);
+
 public:
+       virtual bool init(void) APPLE_KEXT_OVERRIDE;
+
 /*! @var fCommandChain
-    This variable is used by the current 'owner' to queue the command.  During the life cycle of a command it moves through a series of queues.  This is the queue pointer for it.  Only valid while 'ownership' is clear.  For instance a IOCommandPool uses this pointer to maintain its list of free commands.  May be manipulated using the kern/queue.h macros */
-    queue_chain_t fCommandChain;       /* used to queue commands */
+ *   This variable is used by the current 'owner' to queue the command.  During the life cycle of a command it moves through a series of queues.  This is the queue pointer for it.  Only valid while 'ownership' is clear.  For instance a IOCommandPool uses this pointer to maintain its list of free commands.  May be manipulated using the kern/queue.h macros */
+       queue_chain_t fCommandChain;    /* used to queue commands */
 };
 
 #endif /* defined(KERNEL) && defined(__cplusplus) */
 
-#endif /* _IOKIT_IO_COMMAND_H_ */
+#endif  /* _IOKIT_IO_COMMAND_H_ */