author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 11 May 2010 17:28:22 +0300 | |
branch | RCL_3 |
changeset 26 | c734af59ce98 |
parent 24 | 41f0cfe18c80 |
permissions | -rw-r--r-- |
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41f0cfe18c80
Revision: 201017
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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diff
changeset
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// Copyright (c) 2008-2010 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 the License "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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// |
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/** |
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@file |
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@internalTechnology |
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*/ |
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#include <e32std.h> |
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#include <f32file.h> |
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#include "rusbhostmsdevice.h" |
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#include "debug.h" |
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#include "msgservice.h" |
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_LIT(KFileSystem, "FAT"); |
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TVersion RUsbHostMsDevice::Version() const |
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{ |
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__FNLOG("RUsbHostMsDevice::Version"); |
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return(TVersion(KUsbHostMsSrvMajorVersionNumber, |
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KUsbHostMsSrvMinorVersionNumber, |
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KUsbHostMsSrvBuildVersionNumber)); |
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} |
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TInt RUsbHostMsDevice::StartServer() |
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{ |
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__FNLOG("RUsbHostMsDevice::StartServer"); |
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TInt r; |
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RProcess server; |
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const TUid KServerUid3={0x10286A83}; |
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const TUidType serverUid(KNullUid,KNullUid,KServerUid3); |
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// Create the server process |
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if((r=server.Create(KUsbHostMsServerName,KNullDesC,serverUid)) != KErrNone) |
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{ |
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__PRINT1(_L("Server process create = %d\n"), r); |
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return r; |
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} |
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// Create the rendezvous request with the server process |
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TRequestStatus stat; |
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server.Rendezvous(stat); |
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if (stat!=KRequestPending) |
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{ |
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server.Kill(0); // If the outstanding request is not pending then kill the server |
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} |
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else |
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{ |
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server.SetPriority(EPriorityHigh); |
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server.Resume(); // start the server |
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} |
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// Test whether the process has ended and if it has ended, return how it ended. |
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User::WaitForRequest(stat); |
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r=(server.ExitType()==EExitPanic) ? KErrGeneral : stat.Int(); |
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server.Close(); |
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return r; |
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} |
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EXPORT_C RUsbHostMsDevice::RUsbHostMsDevice() |
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{ |
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// Intentionally left blank |
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} |
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/** |
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@internalAll |
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@prototype |
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Add the Mass Storage device to the MSC server. This API is asynchronous, upon |
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completion one could find the number of logical units present in the added |
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device by calling GetNumLun API. Calling the Remove API before completing this |
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asynchronous API will complete the pending request notification with KErrCancel. |
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@param aConfig [In] A constant reference object to |
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THostMassStorageConfig containing the confiquration values of |
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the massstorage device requested to add to the MSC |
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@param aStatus [In] A reference to TRequestStatus to be used for asynchronous |
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request completion |
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*/ |
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EXPORT_C void RUsbHostMsDevice::Add(const THostMassStorageConfig& aConfig, TRequestStatus& aStatus) |
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{ |
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__FNLOG("RUsbHostMsDevice::Add"); |
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TInt err = KErrNone; |
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err = CreateSession(KUsbHostMsServerName, Version(), 128, EIpcSession_GlobalSharable); |
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// Being a transient server, the first session creation would fail with if |
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// the server is not running |
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if(err != KErrNone) |
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{ |
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// Find whether the session creation failed because server was not |
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// running |
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if (err==KErrNotFound || err==KErrServerTerminated) |
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{ |
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// Start the server |
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err = StartServer(); |
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if(err == KErrNone) |
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{ |
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// Try session creation again |
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err = CreateSession(KUsbHostMsServerName, Version(), 128, EIpcSession_GlobalSharable); |
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} |
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} |
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} |
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TRequestStatus* statusPtr = &aStatus; |
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if(err == KErrNone) |
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{ |
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// Create a session handle that can be passed via IPC to another process |
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// (also being shared by other threads in the current process) |
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err = ShareProtected(); |
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if(err == KErrNone) |
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{ |
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// synchronous call to register the interface |
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TPckg<THostMassStorageConfig> pckg(aConfig); |
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err = SendReceive(EUsbHostMsRegisterInterface, TIpcArgs(&pckg)); |
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if(err != KErrNone) |
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{ |
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User::RequestComplete(statusPtr, err); |
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} |
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else |
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{ |
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// Asynchronous call to initialise the interface |
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SendReceive(EUsbHostMsInitialiseInterface, TIpcArgs(NULL), aStatus); |
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} |
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} |
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else |
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{ |
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Close(); // Close the session handle |
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__PRINT1(_L("Could not create a sharable session handle %d\n"), err); |
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User::RequestComplete(statusPtr, err); |
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} |
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} |
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else |
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{ |
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// Check whether the error is in starting the server or in creating the |
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// session |
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__PRINT1(_L("Creating server/session failed with %d\n"), err); |
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User::RequestComplete(statusPtr, err); |
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} |
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} |
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/** |
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@internalAll |
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@prototype |
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Remove the Mass Storage device from the MSC server. |
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*/ |
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EXPORT_C void RUsbHostMsDevice::Remove() |
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{ |
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// Note: Here, at present we use only the interface token. But we still take |
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// THostMassStorageConfig as parameter for future needs |
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__FNLOG("RUsbHostMsDevice::Remove"); |
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_LIT(KUsbHostMsClientPanicCat, "usbhostmsclient"); |
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TInt r = SendReceive(EUsbHostMsUnRegisterInterface); |
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r = SendReceive(EUsbHostMsFinalCleanup); |
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if(r != KErrNone) |
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{ |
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User::Panic(KUsbHostMsClientPanicCat ,KErrCouldNotDisconnect); |
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} |
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Close(); // Close the session handle |
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} |
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/** |
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@internalAll |
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@prototype |
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Get the number of logical units suppoted by the device. |
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@param aNumLuns [Out] Outputs the number of logical units found in the |
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added Mass Storage device. A value of 'n' represents there are |
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'n' LUNs present in the device, where "n > 0" |
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@return TInt |
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*/ |
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EXPORT_C TInt RUsbHostMsDevice::GetNumLun(TUint32& aNumLuns) |
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{ |
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__FNLOG("RUsbHostMsDevice::GetNumLun"); |
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TPckg<TUint32> pckg(aNumLuns); |
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return SendReceive(EUsbHostMsGetNumLun,TIpcArgs(&pckg)); |
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} |
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EXPORT_C TInt RUsbHostMsDevice::MountLun(TUint32 aLunId, TInt aDriveNum) |
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{ |
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__FNLOG("RUsbHostMsDevice::MountLun"); |
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24
41f0cfe18c80
Revision: 201017
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
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__MSDEVPRINT2(_L(">>> RUsbHostMsDevice::MountLun Drv=%d LUN=%d"), aDriveNum, aLunId); |
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RFs TheFs; |
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TInt r = TheFs.Connect(); |
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if(r == KErrNone) |
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{ |
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TPckgBuf<TMassStorageUnitInfo> unitPkg; |
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unitPkg().iLunID = aLunId; |
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r = TheFs.MountProxyDrive(aDriveNum, _L("usbhostms"), &unitPkg, *this); |
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24
41f0cfe18c80
Revision: 201017
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
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__MSDEVPRINT1(_L("MountProxyDrive %d"), r); |
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if(r >= KErrNone) |
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{ |
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r = TheFs.MountFileSystem(KFileSystem, aDriveNum); |
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24
41f0cfe18c80
Revision: 201017
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
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__MSDEVPRINT1(_L("MountFileSystem %d"), r); |
41f0cfe18c80
Revision: 201017
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
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if(r != KErrNone && r != KErrNotReady && r != KErrCorrupt && r != KErrNotSupported) |
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{ |
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TheFs.DismountFileSystem(KFileSystem, aDriveNum); |
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TheFs.DismountProxyDrive(aDriveNum); |
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} |
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} |
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TheFs.Close(); |
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} |
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return r; |
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} |
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EXPORT_C TInt RUsbHostMsDevice::DismountLun(TInt aDriveNum) |
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{ |
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__FNLOG("RUsbHostMsDevice::DismountLun"); |
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41f0cfe18c80
Revision: 201017
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
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__MSDEVPRINT1(_L(">>> RUsbHostMsDevice::DismountLun Drv=%d"), aDriveNum); |
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RFs TheFs; |
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TInt r; |
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r = TheFs.Connect(); |
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if(r == KErrNone) |
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{ |
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r = TheFs.DismountFileSystem(KFileSystem, aDriveNum); |
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if(r != KErrNone) |
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{ |
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// dismount failed - attempt a forced dismount |
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TRequestStatus stat; |
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TheFs.NotifyDismount(aDriveNum, stat, EFsDismountForceDismount); |
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User::WaitForRequest(stat); |
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r = stat.Int(); |
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} |
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if(r == KErrNone) |
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{ |
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r = TheFs.DismountProxyDrive(aDriveNum); |
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} |
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TheFs.Close(); |
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} |
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return r; |
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} |