// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// f32test\server\b_open.cpp

// 

//

#define __E32TEST_EXTENSION__

#include <f32file.h>

#include <e32test.h>

#include <e32hal.h>

#include <f32dbg.h>

#include "t_server.h"

#include "t_chlffs.h"

#ifdef __WINS__

#define WIN32_LEAN_AND_MEAN

#pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union

#include <windows.h>

#pragma warning( default : 4201 ) // nonstandard extension used : nameless struct/union

#endif

GLDEF_D RTest test(_L("B_OPEN"));

LOCAL_D const TInt KMaxFiles=200;

LOCAL_D TBuf<32> nameBuf[KMaxFiles];

LOCAL_D TBuf<0x100> nameBuf1;

LOCAL_D RFile chan[KMaxFiles];

LOCAL_D RFile chan1;

LOCAL_D TFileName fBuf;

LOCAL_D TVolumeInfo vInfo;

LOCAL_D TInt LeaveMemFree;

LOCAL_C void testOpenFiles()

//

// Open files till memory is full

// Write, seek, read, seteof, close, check and delete all files.

//

    {

	TChar currentDrive=gSessionPath[0];

	TInt driveNum;

	TInt r=TheFs.CharToDrive(currentDrive,driveNum);

	test_KErrNone(r);

    TInt i=0;

	TInt totalRam;

    FOREVER

        {

#if defined(__WINS__)

		DWORD sectorsPerCluster;

		DWORD bytesPerSector;

		DWORD freeClusters;

		DWORD sizeClusters;

		BOOL b=GetDiskFreeSpaceA("C:\\",&sectorsPerCluster,&bytesPerSector,&freeClusters,&sizeClusters);

		test(b==TRUE);

		totalRam=sizeClusters*sectorsPerCluster*bytesPerSector;

#else

		TMemoryInfoV1Buf memInfoBuf;

		UserHal::MemoryInfo(memInfoBuf);

		totalRam=memInfoBuf().iTotalRamInBytes;

#endif

        test.Printf(_L("Open %u\n"),i);

        nameBuf[i].Format(_L("B_OPEN test file %d"),i);

		r=chan[i].Replace(TheFs,nameBuf[i],EFileStream|EFileWrite);

		if (r==KErrNone)

			{

			r=chan[i].Write(_L8("SomeText"));

			if ((gDriveCacheFlags & EFileCacheWriteOn) && (r == KErrNone))

				r = chan[i].Flush();

			if (r==KErrDiskFull)

				{

				chan[i].Close();

				test(TheFs.Delete(nameBuf[i])==KErrNone);

				}

			}

		if (r==KErrDiskFull)

			break;

		if (r==KErrNoMemory)

			break;

		if (r!=KErrNone)

			{

			test.Printf(_L("ERROR: RFile::Replace returned %d\n"),r);

			test(EFalse);

			}

        r=TheFs.Volume(vInfo);

		test_KErrNone(r);

		if (driveNum==EDriveC)

	        test.Printf(_L("VInfo size=0x%x free=0x%x TotalRam = 0x%x\n"),vInfo.iSize,vInfo.iFree,totalRam);

        test(vInfo.iFree<=vInfo.iSize);

//      r=TheFs.Volume(vInfo,(driveNum==EDriveC) ? EDriveD : EDriveC);

//		if (r==KErrNone);

//		test(vInfo.iFree<=vInfo.iSize);

	    i++;

        if (i==KMaxFiles)

            {

            if (IsTestingLFFS())

                break;

            else

                test.Panic(_L("Too many files opened"));

            }

        }

	test.Printf(_L("Created %d extra files\n"),i);

	const TInt n_files=i;

	r=TheFs.Volume(vInfo);

	test_KErrNone(r);

	if (driveNum==EDriveC && (vInfo.iDrive.iMediaAtt & KMediaAttVariableSize))

		{

		test(vInfo.iSize<=totalRam);

		test(vInfo.iFree<=totalRam);

		}

    test(vInfo.iFree<=vInfo.iSize);

	test.Next(_L("SetSize to each file"));

    for (i=0;i<n_files;i++)

        {

		r=chan[i].SetSize(0);

		test_KErrNone(r);

        }

	test.Next(_L("Write to each file"));

    TBuf8<3> numBuf;

    for (i=0;i<n_files;i++)

        {

        test.Printf(_L("Write %u\n"),i);

		numBuf.Format(_L8("%d"),i);

		r=chan[i].Write(0,numBuf);

		test_KErrNone(r);

        }

	test.Next(_L("Seek on each file"));

    for (i=0;i<n_files;i++)

        {

        test.Printf(_L("Seeking %u\n"),i);

        TInt pos=0;

        r=chan[i].Seek(ESeekStart,pos);

		test_KErrNone(r);

        }

	test.Next(_L("Read from each file"));

    TBuf8<3> checkBuf;

	for (i=0;i<n_files;i++)

        {

        test.Printf(_L("Read %u\n"),i);

        r=chan[i].Read(checkBuf,3);

		test_KErrNone(r);

		numBuf.Format(_L8("%d"),i);

		test(numBuf==checkBuf);

        }

	test.Next(_L("Set size of each file"));

    for (i=0;i<n_files;i++)

        {

        test.Printf(_L("Set size %u\n"),i);

        r=chan[i].SetSize(i);

		test_KErrNone(r);

        }

    r=TheFs.Volume(vInfo);

	test_KErrNone(r);

	if (driveNum==EDriveC && (vInfo.iDrive.iMediaAtt & KMediaAttVariableSize))

		{

	    test(vInfo.iSize<=totalRam);

		test(vInfo.iFree<=totalRam);

		}

    test(vInfo.iFree<=vInfo.iSize);

	test.Next(_L("Close each file"));

    for (i=0;i<n_files;i++)

        {

        test.Printf(_L("Close %u\n"),i);

        chan[i].Close();

        }

	test.Next(_L("Open each file"));

	TInt n_files_open;

    for (n_files_open=0; n_files_open < n_files; n_files_open++)

        {

        r = chan[n_files_open].Open(TheFs,nameBuf[n_files_open],EFileRead|EFileStream);

		test.Printf(_L("Open(%d) ret %d\n"), n_files_open, r);

		if (r != KErrNone)

			{

			if (driveNum==EDriveC && (vInfo.iDrive.iMediaAtt & KMediaAttVariableSize))

				break;

			else

				test(0);

			}

        }

	test.Next(_L("Check size of each file"));

    for (i=0;i<n_files_open;i++)

        {

        test.Printf(_L("Check %u\n"),i);

        TInt size;

		TInt r=chan[i].Size(size);

		test.Printf(_L("size of file %u is %d ret %d\n"),i,size, r);

		test_KErrNone(r);

		test_Equal(i,size);

        }

	test.Next(_L("Close each file"));

    for (i=0;i<n_files_open;i++)

        {

        test.Printf(_L("Close %u\n"),i);

        chan[i].Close();

        }

	test.Next(_L("Delete files"));

    for (i=0;i<n_files;i++)

        {

        test.Printf(_L("Delete %u\n"),i);

        r=TheFs.Delete(nameBuf[i]);

		test_KErrNone(r);

        }

    }

LOCAL_C void InitTest()

//

// Create a large file

//

	{

	TInt fileNumber = 0;

	TBool fileSizeTruncated;

	do

		{

		fileSizeTruncated = EFalse;

		nameBuf1.Format(_L("\\Hooge Test File for B_OPEN %d"), fileNumber++);

		TInt r=chan1.Replace(TheFs,nameBuf1,EFileStream|EFileWrite);

		test_KErrNone(r);

		r=TheFs.Volume(vInfo);

		test_KErrNone(r);

		TInt64 size;

		LeaveMemFree = 0x400; // ???

		if (vInfo.iFree>LeaveMemFree)

			size=vInfo.iFree-LeaveMemFree;

		else

			size=0;

		const TInt KMaxFileSize = 0x40000000;

		// test as 64 bit numbers in case size is very large (eg. enough that TInt is

		// not large enough to hold it)

		TInt64 KMaxFileSize64 = MAKE_TINT64(0, KMaxFileSize);

		test.Printf(_L("Free space available = %08x:%08x\n"), I64HIGH(size), I64LOW(size));

		if (size > KMaxFileSize64)

			{

			size = KMaxFileSize;

			test.Printf(_L("Truncated to %d to avoid current FAT FSY file size limit !!!\n"), size);

			fileSizeTruncated = ETrue;

			}

		TFileName sessionPath;

		TheFs.SessionPath(sessionPath);

		TBuf<32> message=_L("?: has %ld bytes free\n");

		message[0]=sessionPath[0];

		test.Printf(message,vInfo.iFree);

		if (((vInfo.iDrive.iMediaAtt)&KMediaAttVariableSize)==0)

			{

			// Not a variable sized drive, so should be safe to to just create big file

			test.Printf(_L("Creating %S, 0x%08lx\n"),&nameBuf1,size);

			r=chan1.SetSize((TUint)size);

			}

		else

			{

			// Variable sized drive (proabably RAM drive) needs a bit of special treatment

			// Use a binary search to allocate largest sized file possible...

			test.Printf(_L("Creating %S, 0x%08x\n"),&nameBuf1,size);

			TInt lo = 0;

			TInt hi = (TInt)size;

			const TInt KSizeGranularity = 0x200; // must be power-of-2

			while(hi-lo>KSizeGranularity && r==KErrNone)

				{

				TInt trySize = (lo+hi)/2;

				trySize &= ~(KSizeGranularity-1);

				r = chan1.SetSize((TUint)trySize);

				if(r==KErrNone)

					{

					size = trySize;

					lo = trySize;

					}

				else if(r==KErrDiskFull)

					{

					hi = trySize;

					r = KErrNone;

					}

				}

			if(r==KErrNone)

				{

				// reduce size to leave some free for tests...

				LeaveMemFree = 4096*4; // best leave several RAM pages worth of space so rest of test has some memory

				size -= LeaveMemFree;

				r = chan1.SetSize((TUint)size);

				}

			}

		if (r!=KErrNone)

			{

			test.Printf(_L("ERROR: Creating large file failed %d\n"),r);

			test(EFalse);

			}

		test.Printf(_L("Created %S, 0x%08x\n"),&nameBuf1,size);

		chan1.Close();

		}

	while (fileSizeTruncated);

	}

LOCAL_C void Cleanup()

//

// Cleanup test files

//

	{

	TInt r=TheFs.Delete(nameBuf1);

	test_KErrNone(r);

	r=TheFs.RmDir(gSessionPath);

	test_KErrNone(r);

	}

GLDEF_C void CallTestsL()

//

// Call tests that may leave

//

	{

		return;

	CreateTestDirectory(_L("\\B_OPEN\\"));

	InitTest();

	testOpenFiles();

	Cleanup();

	}