101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/** \file
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This file consists of implementation of class AndroidUsbFileObject that
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encapsulates a common extension for all KMDF file object types.
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*/
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#pragma data_seg()
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#pragma code_seg()
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#include "precomp.h"
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#include "android_usb_file_object.h"
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#pragma data_seg()
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#pragma code_seg("PAGE")
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AndroidUsbFileObject::AndroidUsbFileObject(AndroidUsbFileObjectType fo_type,
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AndroidUsbDeviceObject* dev_obj,
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WDFFILEOBJECT wdf_fo)
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: AndroidUsbWdfObject(AndroidUsbWdfObjectTypeFile),
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file_type_(fo_type),
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device_object_(dev_obj) {
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ASSERT_IRQL_PASSIVE();
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ASSERT(NULL != dev_obj);
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ASSERT(fo_type < AndroidUsbFileObjectTypeMax);
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ASSERT(NULL != wdf_fo);
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set_wdf_object(wdf_fo);
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}
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#pragma code_seg()
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AndroidUsbFileObject::~AndroidUsbFileObject() {
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ASSERT_IRQL_LOW_OR_DISPATCH();
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}
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#pragma code_seg("PAGE")
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NTSTATUS AndroidUsbFileObject::Initialize() {
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ASSERT_IRQL_LOW();
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ASSERT(NULL != wdf_file());
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if (NULL == wdf_file())
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return STATUS_INTERNAL_ERROR;
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// Register context for this file object
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return InitializeContext();
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}
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#pragma code_seg()
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void AndroidUsbFileObject::OnEvtIoRead(WDFREQUEST request,
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size_t length) {
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ASSERT_IRQL_LOW_OR_DISPATCH();
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ASSERT(WdfRequestGetFileObject(request) == wdf_file());
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// Complete zero reads with success
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if (0 == length) {
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WdfRequestCompleteWithInformation(request, STATUS_SUCCESS, 0);
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return;
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}
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WdfRequestComplete(request, STATUS_INVALID_DEVICE_REQUEST);
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}
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void AndroidUsbFileObject::OnEvtIoWrite(WDFREQUEST request,
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size_t length) {
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ASSERT_IRQL_LOW_OR_DISPATCH();
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ASSERT(WdfRequestGetFileObject(request) == wdf_file());
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// Complete zero writes with success
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if (0 == length) {
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WdfRequestCompleteWithInformation(request, STATUS_SUCCESS, 0);
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return;
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}
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WdfRequestComplete(request, STATUS_INVALID_DEVICE_REQUEST);
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}
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void AndroidUsbFileObject::OnEvtIoDeviceControl(WDFREQUEST request,
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size_t output_buf_len,
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size_t input_buf_len,
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ULONG ioctl_code) {
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ASSERT_IRQL_LOW_OR_DISPATCH();
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ASSERT(WdfRequestGetFileObject(request) == wdf_file());
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WdfRequestComplete(request, STATUS_INVALID_DEVICE_REQUEST);
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}
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#pragma data_seg()
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#pragma code_seg()
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