/* * Copyright (c) 1998-2000 Apple Computer, 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 * 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@ */ #include <IOKit/assert.h> #include <IOKit/IOLib.h> #include <IOKit/IOSyncer.h> #include <IOKit/storage/IOStorage.h> #define super IOService OSDefineMetaClass(IOStorage, IOService) OSDefineAbstractStructors(IOStorage, IOService) // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // Local Functions static void storageCompletion(void * target, void * parameter, IOReturn status, UInt64 actualByteCount) { // // Internal completion routine for synchronous versions of read and write. // if (parameter) *((UInt64 *)parameter) = actualByteCount; ((IOSyncer *)target)->signal(status); } // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - bool IOStorage::open(IOService * client, IOOptionBits options, IOStorageAccess access) { // // Ask the storage object for permission to access its contents; the method // is equivalent to IOService::open(), but with the correct parameter types. // return super::open(client, options, (void *) access); } // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IOReturn IOStorage::read(IOService * client, UInt64 byteStart, IOMemoryDescriptor * buffer, UInt64 * actualByteCount = 0) { // // Read data from the storage object at the specified byte offset into the // specified buffer, synchronously. When the read completes, this method // will return to the caller. The actual byte count field is optional. // IOStorageCompletion completion; IOSyncer * completionSyncer; // Initialize the lock we will synchronize against. completionSyncer = IOSyncer::create(); // Fill in the completion information for this request. completion.target = completionSyncer; completion.action = storageCompletion; completion.parameter = actualByteCount; // Issue the asynchronous read. read(client, byteStart, buffer, completion); // Wait for the read to complete. return completionSyncer->wait(); } // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IOReturn IOStorage::write(IOService * client, UInt64 byteStart, IOMemoryDescriptor * buffer, UInt64 * actualByteCount = 0) { // // Write data into the storage object at the specified byte offset from the // specified buffer, synchronously. When the write completes, this method // will return to the caller. The actual byte count field is optional. // IOStorageCompletion completion; IOSyncer * completionSyncer; // Initialize the lock we will synchronize against. completionSyncer = IOSyncer::create(); // Fill in the completion information for this request. completion.target = completionSyncer; completion.action = storageCompletion; completion.parameter = actualByteCount; // Issue the asynchronous write. write(client, byteStart, buffer, completion); // Wait for the write to complete. return completionSyncer->wait(); } // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 0); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 1); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 2); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 3); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 4); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 5); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 6); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 7); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 8); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 9); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 10); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 11); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 12); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 13); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 14); // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OSMetaClassDefineReservedUnused(IOStorage, 15);