author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 17 Sep 2010 08:40:15 +0300 | |
changeset 51 | eaaed528d5fd |
parent 36 | 1a2a19ee918d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004-2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* Adheres to the UsbMan USB Class Controller API and talks to mass storage |
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* file server |
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* |
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*/ |
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/** |
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@file |
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@internalTechnology |
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*/ |
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#include <barsc.h> |
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#include <barsread.h> |
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#include <usb_std.h> |
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#include <cusbclasscontrollerplugin.h> |
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#include <usbms.rsg> |
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#include "CUsbMsClassController.h" |
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#include "OstTraceDefinitions.h" |
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#ifdef OST_TRACE_COMPILER_IN_USE |
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#include "CUsbMsClassControllerTraces.h" |
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#endif |
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#ifdef _DEBUG |
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// Panic category |
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_LIT( KMsCcPanicCategory, "UsbMsCc" ); |
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#endif |
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/** |
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Panic codes for the USB mass storage Class Controller. |
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*/ |
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enum TMsCcPanic |
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{ |
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//Class called while in an illegal state |
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EBadApiCall = 0, |
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EUnusedFunction = 1, |
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}; |
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/** |
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Constructs a CUsbMsClassController object |
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@param aOwner USB Device that owns and manages the class |
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@return A new CUsbMsClassController object |
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*/ |
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CUsbMsClassController* CUsbMsClassController::NewL( |
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MUsbClassControllerNotify& aOwner) |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_NEWL_ENTRY ); |
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CUsbMsClassController* r = new (ELeave) CUsbMsClassController(aOwner); |
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CleanupStack::PushL(r); |
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r->ConstructL(); |
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CleanupStack::Pop(); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_NEWL_EXIT ); |
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return r; |
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} |
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/** |
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Destructor |
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*/ |
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CUsbMsClassController::~CUsbMsClassController() |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_CUSBMSCLASSCONTROLLER_DES_ENTRY ); |
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Cancel(); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_CUSBMSCLASSCONTROLLER_DES_EXIT ); |
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} |
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/** |
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Constructor. |
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@param aOwner USB Device that owns and manages the class |
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*/ |
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CUsbMsClassController::CUsbMsClassController( |
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MUsbClassControllerNotify& aOwner) |
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: CUsbClassControllerPlugIn(aOwner, KMsStartupPriority) |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_CUSBMSCLASSCONTROLLER_CONS_ENTRY ); |
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// Intentionally left blank |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_CUSBMSCLASSCONTROLLER_CONS_EXIT ); |
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} |
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/** |
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2nd Phase Construction. |
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*/ |
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void CUsbMsClassController::ConstructL() |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_CONSTRUCT_ENTRY ); |
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ReadMassStorageConfigL(); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_CONSTRUCT_EXIT ); |
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} |
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102 |
|
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/** |
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Called by UsbMan when it wants to start the mass storage class. |
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105 |
|
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@param aStatus The caller's request status, filled in with an error code |
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*/ |
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void CUsbMsClassController::Start(TRequestStatus& aStatus) |
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109 |
{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_START_ENTRY ); |
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111 |
|
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// The service state should always be idle when this function is called |
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// (guaranteed by CUsbSession). |
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114 |
|
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if (iState != EUsbServiceIdle) |
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116 |
{ |
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OstTrace1( TRACE_FATAL, CUSBMSCLASSCONTROLLER_START, "CUsbMsClassController::Star;iState=%d", (TInt)iState ); |
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__ASSERT_DEBUG( EFalse, User::Panic(KMsCcPanicCategory, EBadApiCall) ); |
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} |
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120 |
|
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TRequestStatus* reportStatus = &aStatus; |
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122 |
|
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iState = EUsbServiceStarting; |
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124 |
|
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#ifndef __OVER_DUMMYUSBLDD__ |
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// Connect to USB Mass Storage server |
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TInt err = iUsbMs.Connect(); |
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#else |
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TInt err = KErrNone; |
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#endif |
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if (err != KErrNone) |
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132 |
{ |
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iState = EUsbServiceIdle; |
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User::RequestComplete(reportStatus, err); |
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OstTrace0( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_START_DUP1, |
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"CUsbMsClassController::Start;Failed to connect to mass storage file server" ); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_START_EXIT ); |
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return; |
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} |
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140 |
|
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#ifndef __OVER_DUMMYUSBLDD__ |
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// Start mass storage device |
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err = iUsbMs.Start(iMsConfig); |
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#else |
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err = KErrNone; |
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#endif |
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147 |
|
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if (err != KErrNone) |
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149 |
{ |
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iState = EUsbServiceIdle; |
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// Connection was created successfully in last step |
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// Get it closed since failed to start device. |
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iUsbMs.Close(); |
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User::RequestComplete(reportStatus, err); |
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OstTrace0( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_START_DUP2, |
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"CUsbMsClassController::Start;Failed to start mass storage device" ); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_START_EXIT_DUP1 ); |
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return; |
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} |
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160 |
|
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iState = EUsbServiceStarted; |
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User::RequestComplete(reportStatus, KErrNone); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_START_EXIT_DUP2 ); |
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} |
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165 |
|
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166 |
/** |
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Called by UsbMan when it wants to stop the USB ACM class. |
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168 |
|
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@param aStatus KErrNone on success or a system wide error code |
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*/ |
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void CUsbMsClassController::Stop(TRequestStatus& aStatus) |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_STOP_ENTRY ); |
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174 |
|
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// The service state should always be started when this function is called |
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// (guaranteed by CUsbSession) |
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if (iState != EUsbServiceStarted) |
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178 |
{ |
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OstTrace1( TRACE_FATAL, CUSBMSCLASSCONTROLLER_STOP, "CUsbMsClassController::Stop;iState=%d", (TInt)iState ); |
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__ASSERT_DEBUG( EFalse, User::Panic(KMsCcPanicCategory, EBadApiCall) ); |
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181 |
} |
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182 |
|
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TRequestStatus* reportStatus = &aStatus; |
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#ifndef __OVER_DUMMYUSBLDD__ |
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TInt err = iUsbMs.Stop(); |
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186 |
|
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if (err != KErrNone) |
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{ |
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iState = EUsbServiceStarted; |
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User::RequestComplete(reportStatus, err); |
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191 |
OstTrace0( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_STOP_DUP1, |
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"CUsbMsClassController::Start;Failed to stop mass storage device" ); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_STOP_EXIT ); |
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return; |
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} |
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196 |
|
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iUsbMs.Close(); |
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198 |
#else |
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iState = EUsbServiceIdle; |
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#endif |
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User::RequestComplete(reportStatus, KErrNone); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_START_STOP_DUP1 ); |
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} |
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|
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/** |
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Gets information about the descriptor which this class provides. Never called |
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by usbMan. |
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|
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@param aDescriptorInfo Descriptor info structure filled in by this function |
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*/ |
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void CUsbMsClassController::GetDescriptorInfo(TUsbDescriptor& /*aDescriptorInfo*/) const |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_GETDESCRIPTORINFO_ENTRY ); |
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OstTrace1( TRACE_FATAL, CUSBMSCLASSCONTROLLER_GETDESCRIPTORINFO, |
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"CUsbMsClassController::GetDescriptorInfo;panic line=%d", (TInt)__LINE__ ); |
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__ASSERT_DEBUG( EFalse, User::Panic(KMsCcPanicCategory, EUnusedFunction) ); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_GETDESCRIPTORINFO_EXIT ); |
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} |
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|
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/** |
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Standard active object RunL. Never called because this class has no |
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asynchronous requests. |
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*/ |
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void CUsbMsClassController::RunL() |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_RUNL_ENTRY ); |
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OstTrace1( TRACE_FATAL, CUSBMSCLASSCONTROLLER_RUNL, |
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"CUsbMsClassController::RunL;panic line=%d", (TInt)__LINE__ ); |
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__ASSERT_DEBUG( EFalse, User::Panic(KMsCcPanicCategory, EUnusedFunction) ); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_RUNL_EXIT ); |
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} |
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|
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/** |
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Standard active object cancellation function. Never called because this |
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class has no asynchronous requests. |
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*/ |
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void CUsbMsClassController::DoCancel() |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_DOCANCEL_ENTRY ); |
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OstTrace1( TRACE_FATAL, CUSBMSCLASSCONTROLLER_DOCANCEL, |
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"CUsbMsClassController::DoCancel;panic line=%d", (TInt)__LINE__ ); |
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__ASSERT_DEBUG( EFalse, User::Panic(KMsCcPanicCategory, EUnusedFunction) ); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_DOCANCEL_EXIT ); |
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} |
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|
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/** |
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Standard active object error function. Never called because this class has |
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no asynchronous requests, and hence its RunL is never called. |
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|
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@param aError The error code (unused) |
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@return Always KErrNone to avoid an active scheduler panic |
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*/ |
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TInt CUsbMsClassController::RunError(TInt /*aError*/) |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_RUNERROR_ENTRY ); |
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OstTrace1( TRACE_FATAL, CUSBMSCLASSCONTROLLER_RUNERROR, |
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"CUsbMsClassController::RunError;panic line=%d", (TInt)__LINE__ ); |
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__ASSERT_DEBUG( EFalse, User::Panic(KMsCcPanicCategory, EUnusedFunction) ); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_RUNERROR_EXIT ); |
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return KErrNone; |
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} |
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|
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/** |
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Read mass storage configuration info from the resource file |
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*/ |
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void CUsbMsClassController::ReadMassStorageConfigL() |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_ENTRY ); |
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|
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// Try to connect to file server |
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RFs fs; |
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TInt fserr = fs.Connect(); |
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|
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if (fserr < 0) |
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{ |
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OstTrace1( TRACE_FATAL, CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL, |
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"CUsbMsClassController::ReadMassStorageConfigL;leave err = %d", fserr ); |
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User::Leave(fserr); |
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} |
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CleanupClosePushL(fs); |
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|
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RResourceFile resource; |
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TRAPD(err, resource.OpenL(fs, KUsbMsResource)); |
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OstTrace1( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_DUP1, |
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"CUsbMsClassController::ReadMassStorageConfigL;Opened resource file with error %d", err ); |
0
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|
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if (err != KErrNone) |
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{ |
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OstTrace0( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_DUP2, |
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"CUsbMsClassController::ReadMassStorageConfigL;Unable to open resource file" ); |
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CleanupStack::PopAndDestroy(&fs); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_EXIT ); |
0
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return; |
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} |
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|
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CleanupClosePushL(resource); |
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resource.ConfirmSignatureL(KUsbMsResourceVersion); |
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HBufC8* msConfigBuf = 0; |
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TRAPD(ret, msConfigBuf = resource.AllocReadL(USBMS_CONFIG)); |
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if (ret != KErrNone) |
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{ |
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OstTrace0( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_DUP3, |
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"CUsbMsClassController::ReadMassStorageConfigL;Failed to open mass storage configuration file" ); |
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CleanupStack::PopAndDestroy(2, &fs); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_EXIT_DUP1 ); |
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return; |
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} |
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CleanupStack::PushL(msConfigBuf); |
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// The format of the USB resource structure is: |
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/* |
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* STRUCT USBMASSSTORAGE_CONFIG |
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* { |
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* LTEXT vendorId; // no more than 8 characters |
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* LTEXT productId; // no more than 16 characters |
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* LTEXT productRev; // no more than 4 characters |
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* }; |
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*/ |
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|
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// Note that the resource must be read in this order! |
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TResourceReader reader; |
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reader.SetBuffer(msConfigBuf); |
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|
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TPtrC vendorId = reader.ReadTPtrC(); |
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TPtrC productId = reader.ReadTPtrC(); |
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TPtrC productRev = reader.ReadTPtrC(); |
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// populate iMsConfig, truncate if exceeding limit |
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ConfigItem(vendorId, iMsConfig.iVendorId, 8); |
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ConfigItem(productId, iMsConfig.iProductId, 16); |
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ConfigItem(productRev, iMsConfig.iProductRev, 4); |
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|
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// Debugging |
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OstTraceExt1( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_DUP4, |
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"CUsbMsClassController::ReadMassStorageConfigL;vendorId = %S\n", vendorId ); |
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OstTraceExt1( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_DUP5, |
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"CUsbMsClassController::ReadMassStorageConfigL;productId = %S\n", productId ); |
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OstTraceExt1( TRACE_NORMAL, CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_DUP6, |
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"CUsbMsClassController::ReadMassStorageConfigL;productRev = %S\n", productRev ); |
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CleanupStack::PopAndDestroy(3, &fs); // msConfigBuf, resource, fs |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_READMASSSTORAGECONFIGL_EXIT_DUP2 ); |
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} |
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/** |
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Utility. Copies the data from TPtr to TBuf and checks data length |
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to make sure the source does not exceed the capacity of the target |
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*/ |
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void CUsbMsClassController::ConfigItem(const TPtrC& source, TDes& target, TInt maxLength) |
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{ |
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OstTraceFunctionEntry0( CUSBMSCLASSCONTROLLER_CONFIGITEM_ENTRY ); |
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if (source.Length() < maxLength) |
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{ |
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maxLength = source.Length(); |
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} |
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|
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target.Copy(source.Ptr(), maxLength); |
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OstTraceFunctionExit0( CUSBMSCLASSCONTROLLER_CONFIGITEM_EXIT ); |
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} |
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367 |