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/*
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* Copyright (c) 1997-2009 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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*
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*/
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#include <string.h>
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#include <stdio.h>
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#include <fcntl.h> // for struct stat
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#include <wchar.h>
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#include <sys/errno.h> // for ENOTSOCK
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#include <sys/ioctl.h>
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#include <c32comm.h>
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#include <sys/stat.h>
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#include <limits.h> //for LLONG_MAX and INT_MAX
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#ifdef SYMBIAN_OE_LIBRT
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#include <sys/shm.h>
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#endif// SYMBIAN_OE_LIBRT
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#include "sysreent.h"
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#include "systemspecialfilercg.h"
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#include "fdesc.h"
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#include "lposix.h"
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#include "ltime.h"
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/*
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Temp directory, this should be checked later
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*/
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#ifdef WIDEP_tmpdir
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#undef WIDEP_tmpdir
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#define WIDEP_tmpdir L"/System/temp/"
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#endif //WIDEP_tmpdir
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CFileDescBase::CFileDescBase( TUint aFcntl, TUint32 aFdAttrib ) :
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iReadTimeout(-1), iFcntlFlag(aFcntl), iFdAttrib(aFdAttrib), iPollErr(KErrNone)
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{
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}
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TInt CFileDescBase::SetAtt(TUint /*aSetAttMask*/, TUint /*aClearAttMask*/)
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{
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return 0;
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}
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// A CFileDescBase factory function, for "named" file-like objects
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CFileDescBase* CFileDescBase::Open(const wchar_t* name, int mode, int perms, TInt& err)
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{
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err = KErrNone;
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CFileDescBase* ret = NULL;
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if(WcsCmp(name, L"CON:") == 0)
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{
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ret = new CTtyDesc; // NB. This won't be the default stdin/stdout/stderr console
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}
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else if(WcsCmp(name, L"NUL:") == 0)
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{
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ret = new CFileDescBase;
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}
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else if((WcsCmp(name, L"TMP:") == 0) || (mode & O_TMPFILE))
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{
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CTempFileDesc* tmp = new CTempFileDesc;
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if(tmp != NULL)
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{
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err = tmp->Open(name, mode);
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if(err != KErrNone)
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{
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delete tmp;
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tmp = NULL;
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}
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}
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ret = tmp;
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}
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#ifdef SYMBIAN_OE_LIBRT
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else if(mode & O_SHMFLG)
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{
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CSharedMemDesc* shm= new CSharedMemDesc;
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if(shm != NULL)
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{
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err = shm->Open(name, mode, perms);
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if(err != KErrNone)
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{
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delete shm;
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shm = NULL;
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}
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}
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ret = shm;
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}
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#endif //SYMBIAN_OE_LIBRT
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else if ((L'C' == name[0]) && (L'O' == name[1]) && (L'M' == name[2]) && (L':' == name[4]) && ((name[3] >= L'1') && (name[3] <= L'9')) ||
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(L'I' == name[0]) && (L'R' == name[1]) && (L'C' == name[2]) && (L'O' == name[3]) && (L'M' == name[4]) && (L':' == name[6]) && ((name[5] >= L'1') && (name[5] <= L'9')))
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{
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CSerialDesc* com = new CSerialDesc;
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if (com != NULL)
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{
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err = com->Open(name, mode, perms);
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if(err != KErrNone)
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{
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delete com;
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com = NULL;
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}
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}
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ret = com;
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}
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else //It's a special file, directory or normal file
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{
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RFs& rfs = Backend()->FileSession();
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TUint attribval;
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TFullName fullName;
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err = GetFullFile(fullName, (const TText16*)name, rfs);
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if(err != KErrNone)
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return NULL;
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int ret1 = rfs.Att(fullName, attribval);
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if (ret1 == 0 && ((attribval & (KEntryAttHidden | KEntryAttSystem))== (KEntryAttHidden | KEntryAttSystem)))
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{
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TSpecialFileType fileType = _SystemSpecialFileBasedFilePath(name, err, rfs);
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if(fileType == EFileTypeMkFifo) //special file, FIFO
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{
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ret = CFileTable::FifoOpen(name, mode, perms, err);
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}
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else if(fileType == EFileTypeSymLink) //special file, symlink
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{
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ret = CFileTable::LinkOpen(name, mode, perms, err, rfs);
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}
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}
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else //normal file or directory
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{
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//Try opening as a file
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CFileDesc* file = new CFileDesc;
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if(file != NULL)
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{
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err = file->Open(rfs, fullName, mode, perms);
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if(err != KErrNone)
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{
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delete file;
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file = NULL;
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}
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}
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ret = file;
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//Check if it is directory, if the open as file failed
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if(err != KErrNone && CheckIfDirectory(fullName, rfs))
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{
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CDirectoryDesc* dir = new CDirectoryDesc;
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if(dir != NULL)
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{
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err = dir->Open(rfs, fullName, mode, perms);
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if(err != KErrNone)
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{
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delete dir;
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dir = NULL;
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}
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}
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ret = dir;
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}
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}
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}
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if(err == KErrNone && ret == NULL)
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{
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err = KErrNoMemory;
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}
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return ret;
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}
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//Check if a path corresponds to a directory. This is a helper function
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//for CFileDescBase::Open()
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TBool CFileDescBase::CheckIfDirectory(const TDesC& aPath, RFs& aFs)
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{
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//Check whether its a Drive Name
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if(KMaxDriveName+1 == aPath.Length())
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{
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if(RFs::IsValidDrive(TDriveUnit(aPath)))
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{
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return ETrue;
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}
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}
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//Now check whether it is a directory
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else
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{
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TEntry entry;
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if(aFs.Entry(aPath, entry) == KErrNone)
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{
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if(entry.IsDir())
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{
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return ETrue;
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}
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}
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}
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return EFalse;
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}
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// Useful default implementations for CFileDescBase virtual functions.
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// Function to be re-implemented in a child class which can seek.
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TInt CFileDescBase::LSeek (off_t& offset, int)
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{
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// minimal implementation for devices which can't seek
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offset=-1;
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return ESPIPE;
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}
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void CFileDescBase::Read (TDes8& aBuf, TRequestStatus& aStatus)
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{
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// minimal implementation for /dev/null
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aBuf.Zero(); // set length to zero
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TRequestStatus* sp=&aStatus;
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User::RequestComplete(sp,KErrNone);
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}
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void CFileDescBase::ReadCancel() {}
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TInt CFileDescBase::ReadCompletion (TDes8& /*aBuf*/, TInt aStatus)
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{
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return aStatus;
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}
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TInt CFileDescBase::FStat (struct stat *st)
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{
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// minimal implementation:
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// I am a character device about which little is known
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st->st_mode = S_IFCHR;
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st->st_blksize=0;
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return KErrNone;
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}
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void CFileDescBase::Complete (TRequestStatus& aStatus, TInt aResult)
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{
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TRequestStatus* sp=&aStatus;
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User::RequestComplete(sp,aResult);
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}
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void CFileDescBase::Write (TDes8& /*aBuf*/, TRequestStatus& aStatus)
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{
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// minimal implementation for /dev/null
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// we will claim to have written all of the data
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Complete(aStatus,KErrNone);
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}
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void CFileDescBase::WriteCancel() {}
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TInt CFileDescBase::WriteCompletion (TDes8& /*aBuf*/, TInt aStatus)
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{
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return aStatus;
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}
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void CFileDescBase::Sync(TRequestStatus& aStatus)
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{
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// minimal implementation for /dev/null
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Complete(aStatus,KErrNone);
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}
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void CFileDescBase::SyncCancel() {}
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void CFileDescBase::Ioctl(int /*aCmd*/, void* /*aParam*/, TRequestStatus& aStatus)
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{
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// minimal implementation for /dev/null and other synchronous devices
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Complete(aStatus,KErrNone);
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}
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void CFileDescBase::IoctlCancel()
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{
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return; // suitable for all synchronous ioctls
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}
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TInt CFileDescBase::IoctlCompletion(int aCmd, void* aParam, TInt aStatus)
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{
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TInt ret=aStatus;
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if (ret!=KErrNone)
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return ret;
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int *param = reinterpret_cast<int*> (aParam);
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switch ((unsigned)aCmd)
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{
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case FIONREAD:
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case E32IONREAD:
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*param=0; // claim that no data is available
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break;
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case E32IOSELECT:
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*param=(*param)&(E32SELECT_READ|E32SELECT_WRITE); // but don't block
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break;
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default:
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ret=KErrNotSupported;
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break;
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}
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return ret;
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}
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// A CFileDescBase factory function, for socket objects
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CFileDescBase* CFileDescBase::Socket(RSocketServ& aSs, int family, int style, int protocol, TInt& err)
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{
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// connect to the Socket Server if necessary
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if (aSs.Handle()==0)
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{
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err=aSs.Connect(TUint(-1)); // allow arbitrary number of requests
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if (err)
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return 0;
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else
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{
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err = aSs.ShareAuto();
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if (err)
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return 0;
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}
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}
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CSockDescBase *socketBase = NULL;
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if (family == AF_LOCAL || family == PF_LOCAL || family == AF_UNIX)
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{
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//coverity[alloc_fn]
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//coverity[assign]
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socketBase = new CFileSocketDesc;
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}
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else
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{
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socketBase = new CSocketDesc;
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}
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if (!socketBase)
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{
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err=KErrNoMemory;
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return 0;
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}
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err = socketBase->Socket(aSs,family,style,protocol);
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if (err)
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{
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delete socketBase;
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if (err == KErrBadName) // Some mismatch in family-style-protocol
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{
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err = EPROTONOSUPPORT;
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}
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//coverity[memory_leak]
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return 0;
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}
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return socketBase;
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}
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// minimal implementation of sockets, useful for all non-socket descriptors
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void CFileDescBase::RecvFrom(TDes8& /*aDesc*/, TSockAddr& /*from*/, int /*flags*/, TRequestStatus& aStatus)
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{
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// minimal implementation
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Complete(aStatus,ENOTSOCK);
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}
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void CFileDescBase::RecvFromCancel() {}
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TInt CFileDescBase::CompletionStatus (TInt& /*aLength*/, TInt aStatus)
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{
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return aStatus;
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}
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void CFileDescBase::SendTo(TDes8& /*aDesc*/, const struct sockaddr* /* anAddr*/, unsigned long /*aAddrLen*/, int /*flags*/, TRequestStatus& aStatus)
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{
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// minimal implementation
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Complete(aStatus,ENOTSOCK);
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}
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void CFileDescBase::SendToCancel() {}
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void CFileDescBase::Shutdown(TUint /*aHow*/,TRequestStatus& aStatus)
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{
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378 |
// minimal implementation
|
|
|
379 |
Complete(aStatus,ENOTSOCK);
|
|
|
380 |
}
|
|
|
381 |
|
|
|
382 |
void CFileDescBase::ShutdownCancel() {}
|
|
|
383 |
|
|
|
384 |
TInt CFileDescBase::Bind(const struct sockaddr* /*addr*/, unsigned long /*size*/)
|
|
|
385 |
{
|
|
|
386 |
return ENOTSOCK;
|
|
|
387 |
}
|
|
|
388 |
|
|
|
389 |
TInt CFileDescBase::Listen(TUint /*qSize*/)
|
|
|
390 |
{
|
|
|
391 |
return ENOTSOCK;
|
|
|
392 |
}
|
|
|
393 |
|
|
|
394 |
void CFileDescBase::Accept(CFileDescBase*& /*aNewSocket*/, TRequestStatus& aStatus, RSocketServ& /*aSs*/, TSockAddr * /*aAddr*/)
|
|
|
395 |
{
|
|
|
396 |
// minimal implementation
|
|
|
397 |
Complete(aStatus,ENOTSOCK);
|
|
|
398 |
}
|
|
|
399 |
|
|
|
400 |
void CFileDescBase::AcceptCancel() {}
|
|
|
401 |
|
|
|
402 |
void CFileDescBase::Connect(const struct sockaddr* /*anAddr*/,unsigned long /*aSize*/,TRequestStatus& aStatus)
|
|
|
403 |
{
|
|
|
404 |
// minimal implementation
|
|
|
405 |
Complete(aStatus,ENOTSOCK);
|
|
|
406 |
User::WaitForRequest(aStatus);
|
|
|
407 |
}
|
|
|
408 |
|
|
|
409 |
void CFileDescBase::ConnectCancel() {}
|
|
|
410 |
|
|
|
411 |
TBool CFileDescBase::GetConnectionProgress()
|
|
|
412 |
{
|
|
|
413 |
return EFalse;
|
|
|
414 |
}
|
|
|
415 |
|
|
|
416 |
void CFileDescBase::SetConnectionProgress( TBool /* aInProgress */ ) {}
|
|
|
417 |
|
|
|
418 |
TInt CFileDescBase::SockName(int /*anEnd*/, struct sockaddr* /*anAddr*/,unsigned long* /*aSize*/)
|
|
|
419 |
{
|
|
|
420 |
return ENOTSOCK;
|
|
|
421 |
}
|
|
|
422 |
|
|
|
423 |
TInt CFileDescBase::GetSockOpt(TInt /*anOptionName*/,TInt /*anOptionLevel*/,TDes8& /*anOption*/)
|
|
|
424 |
{
|
|
|
425 |
return ENOTSOCK;
|
|
|
426 |
}
|
|
|
427 |
|
|
|
428 |
TInt CFileDescBase::SetSockOpt(TInt /*anOptionName*/,TInt /*anOptionLevel*/,TDesC8& /*anOption*/)
|
|
|
429 |
{
|
|
|
430 |
return ENOTSOCK;
|
|
|
431 |
}
|
|
|
432 |
|
|
|
433 |
// -----------------------------------------------------------------------------
|
|
|
434 |
// CFileDescBase::Fcntl
|
|
|
435 |
// Minimal Implementation for fcntl
|
|
|
436 |
// -----------------------------------------------------------------------------
|
|
|
437 |
//
|
|
|
438 |
TInt CFileDescBase::Fcntl(TUint /*anArg*/, TUint aCmd)
|
|
|
439 |
{
|
|
|
440 |
// minimal implementation:
|
|
|
441 |
if(aCmd == F_GETFL)
|
|
|
442 |
{
|
|
|
443 |
return KErrNotFound;
|
|
|
444 |
}
|
|
|
445 |
return KErrNotSupported;
|
|
|
446 |
}
|
|
|
447 |
|
|
|
448 |
// -----------------------------------------------------------------------------
|
|
|
449 |
// CFileDescBase::Poll
|
|
|
450 |
// Checks the file for ready to write/read and exception status
|
|
|
451 |
// -----------------------------------------------------------------------------
|
|
|
452 |
//
|
|
|
453 |
TInt CFileDescBase::Poll(TPollMode /*aMode*/,TBool& aStatus,TInt& /*aErrno*/)
|
|
|
454 |
{
|
|
|
455 |
// always return True, let the derived filedescriptors override
|
|
|
456 |
aStatus = ETrue;
|
|
|
457 |
return 0;
|
|
|
458 |
}
|
|
|
459 |
|
|
|
460 |
// -----------------------------------------------------------------------------
|
|
|
461 |
// CFileDescBase::Poll - Overloaded
|
|
|
462 |
// Synchronous non-blocking call that returns current state of the file descriptor
|
|
|
463 |
// -----------------------------------------------------------------------------
|
|
|
464 |
//
|
|
|
465 |
TInt CFileDescBase::Poll(TUint aEvents)
|
|
|
466 |
{
|
|
|
467 |
// We return that the file descriptor is select true for ready to read,
|
|
|
468 |
// ready to write and error conditions.
|
|
|
469 |
// Let derived file descriptors override as approp.
|
|
|
470 |
TInt readyEvents = 0;
|
|
|
471 |
|
|
|
472 |
if (aEvents & EReadyForReading)
|
|
|
473 |
{
|
|
|
474 |
readyEvents = EReadyForReading;
|
|
|
475 |
}
|
|
|
476 |
if (aEvents & EReadyForWriting)
|
|
|
477 |
{
|
|
|
478 |
readyEvents |= EReadyForWriting;
|
|
|
479 |
}
|
|
|
480 |
if (aEvents & EAnyException)
|
|
|
481 |
{
|
|
|
482 |
readyEvents |= EAnyException;
|
|
|
483 |
}
|
|
|
484 |
|
|
|
485 |
return readyEvents;
|
|
|
486 |
}
|
|
|
487 |
|
|
|
488 |
// -----------------------------------------------------------------------------
|
|
|
489 |
// CFileDescBase::NotifyActivity
|
|
|
490 |
// Registers with the approp. underlying subsystem for read/write/except notifications
|
|
|
491 |
// -----------------------------------------------------------------------------
|
|
|
492 |
//
|
|
|
493 |
TInt CFileDescBase::NotifyActivity(TUint /*aEvents*/, TRequestStatus& /*aRequest*/, TTimeIntervalMicroSeconds32 /*timeout*/)
|
|
|
494 |
{
|
|
|
495 |
// We return KErrCompletion indicating that this activity is complete for
|
|
|
496 |
// this descriptor.
|
|
|
497 |
// Let derived file descriptors override as approp.
|
|
|
498 |
return KErrCompletion;
|
|
|
499 |
}
|
|
|
500 |
|
|
|
501 |
// -----------------------------------------------------------------------------
|
|
|
502 |
// CFileDescBase::TweakWatchedEvents
|
|
|
503 |
// Requests for fd behaviour specific additional events
|
|
|
504 |
// -----------------------------------------------------------------------------
|
|
|
505 |
//
|
|
|
506 |
void CFileDescBase::TweakWatchedEvents(TUint& /*events*/)
|
|
|
507 |
{
|
|
|
508 |
// No implementation required
|
|
|
509 |
// This version is used for both Redir and pipe desc, it is overridden
|
|
|
510 |
// by socket
|
|
|
511 |
}
|
|
|
512 |
|
|
|
513 |
// -----------------------------------------------------------------------------
|
|
|
514 |
// CFileDescBase::TweakReadyEvents
|
|
|
515 |
// Prepares the fd behaviours specific output events
|
|
|
516 |
// -----------------------------------------------------------------------------
|
|
|
517 |
//
|
|
|
518 |
TInt CFileDescBase::TweakReadyEvents(TInt /*errval*/)
|
|
|
519 |
{
|
|
|
520 |
return KErrNone;
|
|
|
521 |
}
|
|
|
522 |
|
|
|
523 |
// CFileDescBase::CancelNotify
|
|
|
524 |
// Cancel an outstanding request for read/write/except notifications
|
|
|
525 |
// -----------------------------------------------------------------------------
|
|
|
526 |
//
|
|
|
527 |
void CFileDescBase::CancelNotify()
|
|
|
528 |
{
|
|
|
529 |
// do nothing
|
|
|
530 |
return;
|
|
|
531 |
}
|
|
|
532 |
|
|
|
533 |
|
|
|
534 |
// Generic (non-virtual) handling for Close
|
|
|
535 |
EXPORT_C TInt CFileDescBase::Close()
|
|
|
536 |
{
|
|
|
537 |
TInt err = KErrNone;
|
|
|
538 |
//Decrement the dup count and mark this FD as invalid if dupcount is 0
|
|
|
539 |
if ( --iDupCount < 0 )
|
|
|
540 |
{
|
|
|
541 |
iFdAttrib |= KInvalidFd;
|
|
|
542 |
//delete this FD only if its not mmaped and being used
|
|
|
543 |
if(!(iFdAttrib & KMMapedFd))
|
|
|
544 |
{
|
|
|
545 |
err=FinalClose();
|
|
|
546 |
//Release the Lock now
|
|
|
547 |
delete this;
|
|
|
548 |
}
|
|
|
549 |
}
|
|
|
550 |
return err;
|
|
|
551 |
}
|
|
|
552 |
|
|
|
553 |
TInt CFileDescBase::FinalClose()
|
|
|
554 |
{
|
|
|
555 |
return KErrNone;
|
|
|
556 |
}
|
|
|
557 |
|
|
|
558 |
void CFileDescBase::SetFids(void *)
|
|
|
559 |
{
|
|
|
560 |
// nada (virtual)
|
|
|
561 |
}
|
|
|
562 |
|
|
|
563 |
// Simple implementation of File handling
|
|
|
564 |
static int MapMode(int aMode, TUint& fMode)
|
|
|
565 |
{
|
|
|
566 |
// EPOC32 doesn't support Write-Only
|
|
|
567 |
if (aMode & (O_WRONLY|O_RDWR))
|
|
|
568 |
{
|
|
|
569 |
fMode = EFileWrite;
|
|
|
570 |
}
|
|
|
571 |
else
|
|
|
572 |
{
|
|
|
573 |
fMode = EFileRead;
|
|
|
574 |
}
|
|
|
575 |
|
|
|
576 |
fMode |= (aMode & O_TEXT) ? EFileStreamText : EFileStream;
|
|
|
577 |
fMode |= EFileShareReadersOrWriters;
|
|
|
578 |
|
|
|
579 |
return aMode & (O_CREAT|O_TRUNC|O_APPEND|O_EXCL|O_EXLOCK);
|
|
|
580 |
}
|
|
|
581 |
|
|
|
582 |
CFileDesc::CFileDesc()
|
|
|
583 |
:CFileDescBase(), iSize(EBufferSize), iExt(-1)
|
|
|
584 |
{}
|
|
|
585 |
|
|
|
586 |
void CFileDesc::SetState(const TDes& params)
|
|
|
587 |
{
|
|
|
588 |
TFileName name;
|
|
|
589 |
iFile.FullName(name);
|
|
|
590 |
iDrive = (TInt16)TDriveUnit(name);
|
|
|
591 |
|
|
|
592 |
TLex lexr(params);
|
|
|
593 |
lexr.Val(iPos);
|
|
|
594 |
lexr.Inc();
|
|
|
595 |
lexr.Val(iExt);
|
|
|
596 |
lexr.Inc();
|
|
|
597 |
lexr.Val(iFcntlFlag);
|
|
|
598 |
lexr.Inc();
|
|
|
599 |
lexr.Val(iFdAttrib, EDecimal);
|
|
|
600 |
lexr.Inc();
|
|
|
601 |
lexr.Val(iPos);
|
|
|
602 |
lexr.Inc();
|
|
|
603 |
lexr.Val(iExt);
|
|
|
604 |
lexr.Inc();
|
|
|
605 |
lexr.Val(iSize);
|
|
|
606 |
|
|
|
607 |
}
|
|
|
608 |
|
|
|
609 |
CFileDesc::~CFileDesc()
|
|
|
610 |
{
|
|
|
611 |
iFile.Close();
|
|
|
612 |
if(iBuffer)
|
|
|
613 |
{
|
|
|
614 |
RHeap* oldHeap = User::SwitchHeap(Backend()->Heap());
|
|
|
615 |
delete [] iBuffer;
|
|
|
616 |
User::SwitchHeap(oldHeap);
|
|
|
617 |
}
|
|
|
618 |
}
|
|
|
619 |
|
|
|
620 |
TInt CFileDesc::FinalClose()
|
|
|
621 |
{
|
|
|
622 |
TInt err = DoSync();
|
|
|
623 |
iLock.Close();
|
|
|
624 |
return err;
|
|
|
625 |
}
|
|
|
626 |
|
|
|
627 |
TInt CFileDesc::Open(RFs& aSession, const TDesC& aName, int mode, int perms)
|
|
|
628 |
{
|
|
|
629 |
TInt err;
|
|
|
630 |
TUint fMode;
|
|
|
631 |
|
|
|
632 |
iDrive=(TInt16)TDriveUnit(aName);
|
|
|
633 |
|
|
|
634 |
// Create = make new file, can return KErrAlreadyExists
|
|
|
635 |
// Open = open an existing file, can return KErrPathNotFound or KErrNotFound
|
|
|
636 |
// Replace = open a new file, zapping the existing one if necessary
|
|
|
637 |
|
|
|
638 |
int mapped=MapMode(mode, fMode);
|
|
|
639 |
// if the file is in \sys, use EFileShareReadersOnly not EFileShareReadersOrWriters
|
|
|
640 |
TParsePtrC pars(aName);
|
|
|
641 |
if (pars.Path().FindF(_L("\\SYS\\")) == 0)
|
|
|
642 |
{
|
|
|
643 |
fMode &= ~EFileShareReadersOrWriters;
|
|
|
644 |
fMode |= EFileShareReadersOnly;
|
|
|
645 |
}
|
|
|
646 |
|
|
|
647 |
// if the file is in \resource, dont use EFileShareReadersOrWriters
|
|
|
648 |
if (pars.Path().FindF(_L("\\resource\\")) == 0)
|
|
|
649 |
{
|
|
|
650 |
fMode &= ~EFileShareReadersOrWriters;
|
|
|
651 |
fMode |= EFileShareReadersOnly;
|
|
|
652 |
}
|
|
|
653 |
|
|
|
654 |
//Set iFcntlFlag flag
|
|
|
655 |
iFcntlFlag = mode & O_ACCMODE;
|
|
|
656 |
|
|
|
657 |
if(mode & O_APPEND)
|
|
|
658 |
{
|
|
|
659 |
iFcntlFlag |= O_APPEND;
|
|
|
660 |
}
|
|
|
661 |
|
|
|
662 |
TInt fileMode = 0;
|
|
|
663 |
TBool created = EFalse;
|
|
|
664 |
//store the open modes in the file descriptor object
|
|
|
665 |
|
|
|
666 |
switch(perms & (S_IRUSR | S_IWUSR ))
|
|
|
667 |
{
|
|
|
668 |
case S_IRUSR | S_IWUSR: //owner read write
|
|
|
669 |
case S_IWUSR : //owner write
|
|
|
670 |
{
|
|
|
671 |
break;
|
|
|
672 |
}
|
|
|
673 |
case S_IRUSR: //owner read
|
|
|
674 |
{
|
|
|
675 |
fileMode = KEntryAttReadOnly;
|
|
|
676 |
break;
|
|
|
677 |
}
|
|
|
678 |
default:
|
|
|
679 |
{
|
|
|
680 |
break;
|
|
|
681 |
}
|
|
|
682 |
}
|
|
|
683 |
|
|
|
684 |
switch (mapped)
|
|
|
685 |
{
|
|
|
686 |
case O_CREAT|O_EXCL: //For O_EXCL if file exists then return error
|
|
|
687 |
err = iFile.Create(aSession, aName, fMode);
|
|
|
688 |
if(err)
|
|
|
689 |
{
|
|
|
690 |
return err;
|
|
|
691 |
}
|
|
|
692 |
created = ETrue ;
|
|
|
693 |
break;
|
|
|
694 |
case O_CREAT|O_TRUNC:
|
|
|
695 |
err = iFile.Replace(aSession, aName, fMode);
|
|
|
696 |
if(!err)
|
|
|
697 |
{
|
|
|
698 |
created = ETrue;
|
|
|
699 |
}
|
|
|
700 |
break;
|
|
|
701 |
case O_TRUNC:
|
|
|
702 |
err = iFile.Open(aSession, aName, fMode);
|
|
|
703 |
if(!err)
|
|
|
704 |
err = iFile.SetSize(0);
|
|
|
705 |
break;
|
|
|
706 |
case O_CREAT|O_EXCL|O_APPEND: //if file exists then return error
|
|
|
707 |
err = iFile.Create(aSession, aName, fMode);
|
|
|
708 |
if(err)
|
|
|
709 |
{
|
|
|
710 |
return err;
|
|
|
711 |
}
|
|
|
712 |
created = ETrue ;
|
|
|
713 |
break;
|
|
|
714 |
case O_CREAT|O_EXCL|O_TRUNC: //if file exists then return error
|
|
|
715 |
err = iFile.Create(aSession, aName, fMode);
|
|
|
716 |
if(!err)
|
|
|
717 |
{
|
|
|
718 |
err = iFile.SetSize(0);
|
|
|
719 |
created = ETrue ;
|
|
|
720 |
}
|
|
|
721 |
else
|
|
|
722 |
{
|
|
|
723 |
return err;
|
|
|
724 |
}
|
|
|
725 |
break;
|
|
|
726 |
case O_EXLOCK: //emulating exclusive locks
|
|
|
727 |
err = iFile.Open(aSession, aName, fMode);
|
|
|
728 |
if(err == KErrNone)
|
|
|
729 |
{
|
|
|
730 |
FSIZE fileSize = 0;
|
|
|
731 |
err = iFile.Size(fileSize);
|
|
|
732 |
if(fileSize <= 0 )
|
|
|
733 |
return KErrNotSupported;
|
|
|
734 |
|
|
|
735 |
if(err == KErrNone)
|
|
|
736 |
{
|
|
|
737 |
err = iFile.Lock(0, fileSize);
|
|
|
738 |
}
|
|
|
739 |
}
|
|
|
740 |
|
|
|
741 |
if(err != KErrNone)
|
|
|
742 |
{
|
|
|
743 |
return err;
|
|
|
744 |
}
|
|
|
745 |
break;
|
|
|
746 |
// Everything else is assumed to mean open existing file,
|
|
|
747 |
// If the file isn't there, O_CREAT implies that we should make it
|
|
|
748 |
default:
|
|
|
749 |
err = iFile.Open(aSession, aName, fMode);
|
|
|
750 |
if (err == KErrNotFound && (mapped & O_CREAT))
|
|
|
751 |
{
|
|
|
752 |
err = iFile.Create(aSession, aName, fMode);
|
|
|
753 |
if(!err)
|
|
|
754 |
{
|
|
|
755 |
created = ETrue;
|
|
|
756 |
}
|
|
|
757 |
|
|
|
758 |
}
|
|
|
759 |
if((err == KErrArgument) &&(mode == (O_CREAT | O_RDONLY)))
|
|
|
760 |
{
|
|
|
761 |
TUint CrMode = EFileShareReadersOrWriters | EFileWrite ;
|
|
|
762 |
CrMode |= (mode & O_TEXT) ? EFileStreamText : EFileStream;
|
|
|
763 |
err = iFile.Create(aSession , aName , CrMode);
|
|
|
764 |
|
|
|
765 |
if(!err)
|
|
|
766 |
{
|
|
|
767 |
created = ETrue;
|
|
|
768 |
iFile.Close() ;
|
|
|
769 |
err = iFile.Open(aSession, aName , fMode);
|
|
|
770 |
}
|
|
|
771 |
}
|
|
|
772 |
|
|
|
773 |
if (err == KErrNone && (mapped & O_APPEND))
|
|
|
774 |
{
|
|
|
775 |
iPos = Ext();
|
|
|
776 |
if (iPos < 0)
|
|
|
777 |
err = iPos;
|
|
|
778 |
}
|
|
|
779 |
break;
|
|
|
780 |
|
|
|
781 |
}
|
|
|
782 |
if ((mode & O_BUFFERED) == 0)
|
|
|
783 |
iSize = 0;
|
|
|
784 |
|
|
|
785 |
//If File is to be opened for O_CREAT | O_RDONLY, set the corresponding attributes
|
|
|
786 |
if(created && fileMode)
|
|
|
787 |
{
|
|
|
788 |
err = iFile.SetAtt(fileMode, 0) ;
|
|
|
789 |
}
|
|
|
790 |
|
|
|
791 |
if (!err)
|
|
|
792 |
{
|
|
|
793 |
err = Alloc();
|
|
|
794 |
}
|
|
|
795 |
|
|
|
796 |
if(err == KErrNone)
|
|
|
797 |
{
|
|
|
798 |
err = CreateLock();
|
|
|
799 |
}
|
|
|
800 |
|
|
|
801 |
return err;
|
|
|
802 |
}
|
|
|
803 |
|
|
|
804 |
TInt CFileDesc::LSeek (off_t& offset, int whence)
|
|
|
805 |
{
|
|
|
806 |
//return if its an invalid fd
|
|
|
807 |
//This scenario comes when the file is closed, but mmap still exists
|
|
|
808 |
if(iFdAttrib & KInvalidFd)
|
|
|
809 |
{
|
|
|
810 |
return KErrBadHandle;
|
|
|
811 |
}
|
|
|
812 |
iLock.Wait();
|
|
|
813 |
FSIZE pos=offset;
|
|
|
814 |
FSIZE ext=Ext();
|
|
|
815 |
if (ext < 0)
|
|
|
816 |
{
|
|
|
817 |
iLock.Signal();
|
|
|
818 |
return ext;
|
|
|
819 |
}
|
|
|
820 |
switch (whence)
|
|
|
821 |
{
|
|
|
822 |
case SEEK_SET:
|
|
|
823 |
break;
|
|
|
824 |
case SEEK_CUR:
|
|
|
825 |
pos += Pos();
|
|
|
826 |
break;
|
|
|
827 |
case SEEK_END:
|
|
|
828 |
pos += ext;
|
|
|
829 |
break;
|
|
|
830 |
default:
|
|
|
831 |
{
|
|
|
832 |
iLock.Signal();
|
|
|
833 |
return KErrArgument;
|
|
|
834 |
}
|
|
|
835 |
}
|
|
|
836 |
|
|
|
837 |
TInt ret = KErrNone;
|
|
|
838 |
if (pos < 0)
|
|
|
839 |
{
|
|
|
840 |
iLock.Signal();
|
|
|
841 |
return KErrArgument;
|
|
|
842 |
}
|
|
|
843 |
else if (pos >= ext)
|
|
|
844 |
{
|
|
|
845 |
ret = Flush();
|
|
|
846 |
if (!ret)
|
|
|
847 |
{
|
|
|
848 |
iState = EAlloc;
|
|
|
849 |
}
|
|
|
850 |
}
|
|
|
851 |
|
|
|
852 |
switch (iState)
|
|
|
853 |
{
|
|
|
854 |
case EAlloc:
|
|
|
855 |
iPos = pos;
|
|
|
856 |
break;
|
|
|
857 |
case EReading:
|
|
|
858 |
{
|
|
|
859 |
FSIZE lag = iPos - pos;
|
|
|
860 |
if (lag >= 0 && lag <= (iEnd - iBuffer))
|
|
|
861 |
iPtr = iEnd - lag;
|
|
|
862 |
else
|
|
|
863 |
{
|
|
|
864 |
iPtr = iEnd;
|
|
|
865 |
iPos = pos;
|
|
|
866 |
}
|
|
|
867 |
}
|
|
|
868 |
break;
|
|
|
869 |
case EWriting:
|
|
|
870 |
if (pos != Pos())
|
|
|
871 |
{
|
|
|
872 |
ret = Flush();
|
|
|
873 |
if (ret != KErrNone)
|
|
|
874 |
{
|
|
|
875 |
iLock.Signal();
|
|
|
876 |
return ret;
|
|
|
877 |
}
|
|
|
878 |
iPos = pos;
|
|
|
879 |
}
|
|
|
880 |
break;
|
|
|
881 |
default:
|
|
|
882 |
{
|
|
|
883 |
//Do nothing
|
|
|
884 |
}
|
|
|
885 |
}
|
|
|
886 |
offset = pos;
|
|
|
887 |
iLock.Signal();
|
|
|
888 |
return ret;
|
|
|
889 |
}
|
|
|
890 |
|
|
|
891 |
void CFileDesc::MapStat(struct stat& st, const TTime& aModTime, TUint& aAttr, const mode_t aMode)
|
|
|
892 |
{
|
|
|
893 |
if ( aMode == S_IFREG)
|
|
|
894 |
{
|
|
|
895 |
st.st_mode = (aAttr&KEntryAttDir) ? S_IFDIR: S_IFREG;
|
|
|
896 |
}
|
|
|
897 |
else
|
|
|
898 |
{
|
|
|
899 |
st.st_mode = aMode;
|
|
|
900 |
}
|
|
|
901 |
|
|
|
902 |
if ((aAttr&KEntryAttReadOnly))
|
|
|
903 |
{
|
|
|
904 |
st.st_mode |= S_IRUSR;
|
|
|
905 |
}
|
|
|
906 |
else
|
|
|
907 |
{
|
|
|
908 |
st.st_mode = st.st_mode | S_IWUSR | S_IRUSR;
|
|
|
909 |
}
|
|
|
910 |
|
|
|
911 |
st.st_nlink = (S_IFLNK == st.st_mode) ? 2 : 1;
|
|
|
912 |
TTimeIntervalSeconds res;
|
|
|
913 |
const TTime KEpocTime(MAKE_TINT64(0x00dcddb3,0x0f2f8000)); // 00:00, Jan 1st 1970
|
|
|
914 |
if(aModTime.SecondsFrom(KEpocTime, res))
|
|
|
915 |
{
|
|
|
916 |
st.st_mtime = -1;
|
|
|
917 |
st.st_atime = -1 ;
|
|
|
918 |
st.st_ctime = -1;
|
|
|
919 |
}
|
|
|
920 |
else
|
|
|
921 |
{
|
|
|
922 |
st.st_mtime = res.Int();
|
|
|
923 |
st.st_ctime = st.st_atime = st.st_mtime ; //here modification and access time are same
|
|
|
924 |
}
|
|
|
925 |
st.st_blksize=512;
|
|
|
926 |
}
|
|
|
927 |
|
|
|
928 |
TInt CFileDesc::FStat (struct stat* st)
|
|
|
929 |
{
|
|
|
930 |
//return if its an invalid fd
|
|
|
931 |
if(iFdAttrib & KInvalidFd)
|
|
|
932 |
{
|
|
|
933 |
return KErrBadHandle;
|
|
|
934 |
}
|
|
|
935 |
TInt err;
|
|
|
936 |
TUint att;
|
|
|
937 |
TTime modtime;
|
|
|
938 |
|
|
|
939 |
err = iFile.Att(att);
|
|
|
940 |
if (!err)
|
|
|
941 |
{
|
|
|
942 |
err = iFile.Modified(modtime);
|
|
|
943 |
if (!err)
|
|
|
944 |
{
|
|
|
945 |
FSIZE ext=Ext();
|
|
|
946 |
if (ext >= 0)
|
|
|
947 |
{
|
|
|
948 |
st->st_size = ext;
|
|
|
949 |
st->st_dev = st->st_rdev = iDrive;
|
|
|
950 |
MapStat(*st, modtime, att);
|
|
|
951 |
return 0;
|
|
|
952 |
}
|
|
|
953 |
else
|
|
|
954 |
err = ext;
|
|
|
955 |
}
|
|
|
956 |
}
|
|
|
957 |
return err;
|
|
|
958 |
}
|
|
|
959 |
|
|
|
960 |
TInt CFileDesc::SetAtt(TUint aSetAttMask, TUint aClearAttMask)
|
|
|
961 |
{
|
|
|
962 |
return iFile.SetAtt(aSetAttMask , aClearAttMask) ;
|
|
|
963 |
}
|
|
|
964 |
|
|
|
965 |
TInt CFileDesc::Alloc()
|
|
|
966 |
{
|
|
|
967 |
if (iSize)
|
|
|
968 |
{
|
|
|
969 |
//Delete if iBuffer is holding some memory already
|
|
|
970 |
if (iBuffer)
|
|
|
971 |
{
|
|
|
972 |
delete [] iBuffer;
|
|
|
973 |
}
|
|
|
974 |
iBuffer = new TUint8[iSize];
|
|
|
975 |
if (iBuffer == 0)
|
|
|
976 |
return KErrNoMemory;
|
|
|
977 |
}
|
|
|
978 |
return KErrNone;
|
|
|
979 |
}
|
|
|
980 |
|
|
|
981 |
TInt CFileDesc::FileRead(TUint8* aPtr,TInt aLength)
|
|
|
982 |
{
|
|
|
983 |
TPtr8 ptr(aPtr,aLength);
|
|
|
984 |
TInt r=iFile.Read(iPos,ptr);
|
|
|
985 |
if (r == KErrNone)
|
|
|
986 |
{
|
|
|
987 |
r = ptr.Length();
|
|
|
988 |
iPos += r;
|
|
|
989 |
if (r < aLength)
|
|
|
990 |
iExt = iPos;
|
|
|
991 |
}
|
|
|
992 |
return r;
|
|
|
993 |
}
|
|
|
994 |
|
|
|
995 |
TInt CFileDesc::FileWrite(TUint8* aPtr,TInt aLength)
|
|
|
996 |
{
|
|
|
997 |
TPtrC8 ptr(aPtr,aLength);
|
|
|
998 |
if (iExt >= 0)
|
|
|
999 |
{
|
|
|
1000 |
if (iPos > iExt)
|
|
|
1001 |
{
|
|
|
1002 |
iFile.SetSize(iPos);
|
|
|
1003 |
}
|
|
|
1004 |
}
|
|
|
1005 |
|
|
|
1006 |
// Check if the specified file is opened in O_APPEND
|
|
|
1007 |
// mode and set right the file write position
|
|
|
1008 |
if(iFcntlFlag & O_APPEND)
|
|
|
1009 |
{
|
|
|
1010 |
FSIZE bytes=0;
|
|
|
1011 |
TInt ret = iFile.Size(bytes);
|
|
|
1012 |
if (ret < 0)
|
|
|
1013 |
return ret;
|
|
|
1014 |
iPos = Max(bytes, Pos());
|
|
|
1015 |
}
|
|
|
1016 |
|
|
|
1017 |
TInt r = iFile.Write(iPos,ptr);
|
|
|
1018 |
if (r == KErrNone)
|
|
|
1019 |
{
|
|
|
1020 |
r = ptr.Length();
|
|
|
1021 |
iPos += aLength;
|
|
|
1022 |
if (iPos > iExt && iExt >= 0)
|
|
|
1023 |
iExt = iPos;
|
|
|
1024 |
}
|
|
|
1025 |
return r;
|
|
|
1026 |
}
|
|
|
1027 |
|
|
|
1028 |
TInt CFileDesc::Flush()
|
|
|
1029 |
{
|
|
|
1030 |
if (iPtr > iBuffer)
|
|
|
1031 |
{
|
|
|
1032 |
TInt r = FileWrite(iBuffer, iPtr-iBuffer);
|
|
|
1033 |
if (r < 0)
|
|
|
1034 |
return r;
|
|
|
1035 |
iPtr = iBuffer;
|
|
|
1036 |
}
|
|
|
1037 |
return KErrNone;
|
|
|
1038 |
}
|
|
|
1039 |
|
|
|
1040 |
TInt CFileDesc::DoRead (TDes8& aDesc)
|
|
|
1041 |
{
|
|
|
1042 |
if (iState != EReading)
|
|
|
1043 |
{
|
|
|
1044 |
if (iState != EAlloc)
|
|
|
1045 |
{
|
|
|
1046 |
TInt ret = Flush();
|
|
|
1047 |
if (ret != KErrNone)
|
|
|
1048 |
{
|
|
|
1049 |
return ret;
|
|
|
1050 |
}
|
|
|
1051 |
}
|
|
|
1052 |
iState = EReading;
|
|
|
1053 |
iPtr = iEnd = iBuffer;
|
|
|
1054 |
}
|
|
|
1055 |
|
|
|
1056 |
TUint8* p = (TUint8*) aDesc.Ptr();
|
|
|
1057 |
TInt max = aDesc.MaxLength();
|
|
|
1058 |
TInt avail = iEnd - iPtr;
|
|
|
1059 |
TInt len = Min(max, avail);
|
|
|
1060 |
if (len > 0)
|
|
|
1061 |
{
|
|
|
1062 |
p = Mem::Copy(p, iPtr, len);
|
|
|
1063 |
iPtr += len;
|
|
|
1064 |
max -= len;
|
|
|
1065 |
}
|
|
|
1066 |
if (max >= iSize)
|
|
|
1067 |
{
|
|
|
1068 |
TInt ret = FileRead(p, max);
|
|
|
1069 |
if (ret < 0)
|
|
|
1070 |
return ret;
|
|
|
1071 |
p += ret;
|
|
|
1072 |
}
|
|
|
1073 |
else if (max > 0)
|
|
|
1074 |
{
|
|
|
1075 |
TInt ret = FileRead(iBuffer, Min(max + EReadAhead, iSize));
|
|
|
1076 |
if (ret < 0)
|
|
|
1077 |
return ret;
|
|
|
1078 |
len = Min(max, ret);
|
|
|
1079 |
p = Mem::Copy(p, iBuffer, len);
|
|
|
1080 |
iPtr = iBuffer + len;
|
|
|
1081 |
iEnd = iBuffer + ret;
|
|
|
1082 |
}
|
|
|
1083 |
aDesc.SetLength(p-aDesc.Ptr());
|
|
|
1084 |
return aDesc.Length();
|
|
|
1085 |
}
|
|
|
1086 |
|
|
|
1087 |
void CFileDesc::Read (TDes8& aDesc, TRequestStatus& aStatus)
|
|
|
1088 |
{
|
|
|
1089 |
//return if its an invalid fd
|
|
|
1090 |
if(iFdAttrib & KInvalidFd)
|
|
|
1091 |
{
|
|
|
1092 |
Complete(aStatus, KErrBadHandle);
|
|
|
1093 |
return;
|
|
|
1094 |
}
|
|
|
1095 |
//Acquire the Lock before read and release it later
|
|
|
1096 |
iLock.Wait();
|
|
|
1097 |
Complete(aStatus,DoRead(aDesc));
|
|
|
1098 |
iLock.Signal();
|
|
|
1099 |
}
|
|
|
1100 |
|
|
|
1101 |
TInt CFileDesc::DoWrite (TDes8& aDesc)
|
|
|
1102 |
{
|
|
|
1103 |
if (iState != EWriting)
|
|
|
1104 |
{
|
|
|
1105 |
if (iState != EAlloc)
|
|
|
1106 |
{
|
|
|
1107 |
iPos -= iEnd - iPtr;
|
|
|
1108 |
}
|
|
|
1109 |
|
|
|
1110 |
iState = EWriting;
|
|
|
1111 |
iPtr = iBuffer;
|
|
|
1112 |
iEnd = iBuffer + iSize;
|
|
|
1113 |
}
|
|
|
1114 |
|
|
|
1115 |
TUint8* p = (TUint8*) aDesc.Ptr();
|
|
|
1116 |
TInt max = aDesc.Length();
|
|
|
1117 |
TInt avail = iEnd - iPtr;
|
|
|
1118 |
TInt len = Min(max, avail);
|
|
|
1119 |
if (len > 0)
|
|
|
1120 |
{
|
|
|
1121 |
iPtr = Mem::Copy(iPtr, p, len);
|
|
|
1122 |
p += len;
|
|
|
1123 |
max -= len;
|
|
|
1124 |
}
|
|
|
1125 |
if (max == 0)
|
|
|
1126 |
return len;
|
|
|
1127 |
TInt r=Flush();
|
|
|
1128 |
if (r < 0)
|
|
|
1129 |
return r;
|
|
|
1130 |
if (max >= iSize)
|
|
|
1131 |
return len + FileWrite(p, max);
|
|
|
1132 |
iPtr = Mem::Copy(iPtr, p, max);
|
|
|
1133 |
return len + max;
|
|
|
1134 |
}
|
|
|
1135 |
|
|
|
1136 |
void CFileDesc::Write(TDes8& aDesc, TRequestStatus& aStatus)
|
|
|
1137 |
{
|
|
|
1138 |
//return if its an invalid fd
|
|
|
1139 |
if(iFdAttrib & KInvalidFd)
|
|
|
1140 |
{
|
|
|
1141 |
Complete(aStatus, KErrBadHandle);
|
|
|
1142 |
return;
|
|
|
1143 |
}
|
|
|
1144 |
//Acquire the Lock before write and release it later
|
|
|
1145 |
iLock.Wait();
|
|
|
1146 |
Complete(aStatus,DoWrite(aDesc));
|
|
|
1147 |
iLock.Signal();
|
|
|
1148 |
}
|
|
|
1149 |
|
|
|
1150 |
TInt CFileDesc::DoSync()
|
|
|
1151 |
{
|
|
|
1152 |
if (iState == EWriting)
|
|
|
1153 |
{
|
|
|
1154 |
TInt ret = Flush();
|
|
|
1155 |
if (ret < 0)
|
|
|
1156 |
return ret;
|
|
|
1157 |
}
|
|
|
1158 |
return iFile.Flush();
|
|
|
1159 |
}
|
|
|
1160 |
|
|
|
1161 |
void CFileDesc::Sync(TRequestStatus& aStatus)
|
|
|
1162 |
{
|
|
|
1163 |
iLock.Wait();
|
|
|
1164 |
Complete(aStatus,DoSync());
|
|
|
1165 |
iLock.Signal();
|
|
|
1166 |
}
|
|
|
1167 |
|
|
|
1168 |
FSIZE CFileDesc::Pos()
|
|
|
1169 |
{
|
|
|
1170 |
FSIZE pos = iPos;
|
|
|
1171 |
if (iState == EReading)
|
|
|
1172 |
pos -= (iEnd - iPtr);
|
|
|
1173 |
else if (iState == EWriting)
|
|
|
1174 |
pos += (iPtr - iBuffer);
|
|
|
1175 |
return pos;
|
|
|
1176 |
}
|
|
|
1177 |
|
|
|
1178 |
FSIZE CFileDesc::Ext()
|
|
|
1179 |
{
|
|
|
1180 |
TInt r = iFile.Size(iExt);
|
|
|
1181 |
if (r < 0)
|
|
|
1182 |
return r;
|
|
|
1183 |
return iExt;
|
|
|
1184 |
}
|
|
|
1185 |
|
|
|
1186 |
TInt CFileDesc::IoctlCompletion(int aCmd, void* aParam, TInt aStatus)
|
|
|
1187 |
{
|
|
|
1188 |
TInt ret=aStatus;
|
|
|
1189 |
if (ret!=KErrNone)
|
|
|
1190 |
return ret;
|
|
|
1191 |
// some useful sums about the current state of the file
|
|
|
1192 |
FSIZE curoff = Pos();
|
|
|
1193 |
FSIZE size = Ext();
|
|
|
1194 |
if (size < 0)
|
|
|
1195 |
ret = size;
|
|
|
1196 |
int *param=reinterpret_cast<int*> (aParam);
|
|
|
1197 |
switch ((unsigned)aCmd)
|
|
|
1198 |
{
|
|
|
1199 |
case FIONREAD:
|
|
|
1200 |
case E32IONREAD:
|
|
|
1201 |
if (ret==KErrNone)
|
|
|
1202 |
*param=(size-curoff);
|
|
|
1203 |
break;
|
|
|
1204 |
case E32IOSELECT:
|
|
|
1205 |
{
|
|
|
1206 |
int mask=E32SELECT_WRITE;
|
|
|
1207 |
if ((size-curoff)>0)
|
|
|
1208 |
mask |= E32SELECT_READ;
|
|
|
1209 |
*param=(*param)&mask; // but don't block
|
|
|
1210 |
}
|
|
|
1211 |
break;
|
|
|
1212 |
default:
|
|
|
1213 |
ret=KErrNotSupported;
|
|
|
1214 |
break;
|
|
|
1215 |
}
|
|
|
1216 |
return ret;
|
|
|
1217 |
}
|
|
|
1218 |
|
|
|
1219 |
|
|
|
1220 |
#if defined(SYMBIAN_OE_LARGE_FILE_SUPPORT) && !defined(SYMBIAN_OE_NO_LFS)
|
|
|
1221 |
// this needs to be corrected once the api which gives the large file size is available.
|
|
|
1222 |
//#define MAX_SIZE LLONG_MAX /* 2^63-1 - MAX file size */
|
|
|
1223 |
#define MAX_SIZE INT_MAX /* 2^31-1 - MAX file size */
|
|
|
1224 |
#else
|
|
|
1225 |
#define MAX_SIZE INT_MAX /* 2^31-1 - MAX file size */
|
|
|
1226 |
#endif //SYMBIAN_OE_LARGE_FILE_SUPPORT && !SYMBIAN_OE_NO_LFS
|
|
|
1227 |
|
|
|
1228 |
TInt CFileDesc::ProcessLockParams(FSIZE& pos, FSIZE& lock_len, TInt& lock_type, struct flock* lock)
|
|
|
1229 |
{
|
|
|
1230 |
TInt retVal=0;
|
|
|
1231 |
lock_type = lock->l_type;
|
|
|
1232 |
if(!lock->l_len) //if len = 0 then lock must be extended to the system limit for max file size
|
|
|
1233 |
{
|
|
|
1234 |
lock_len=MAX_SIZE;
|
|
|
1235 |
}
|
|
|
1236 |
else //len argument is non-zero
|
|
|
1237 |
{
|
|
|
1238 |
lock_len = lock->l_len;
|
|
|
1239 |
}
|
|
|
1240 |
pos =lock->l_start; //offset
|
|
|
1241 |
switch( lock->l_whence )
|
|
|
1242 |
{
|
|
|
1243 |
case SEEK_SET:
|
|
|
1244 |
|
|
|
1245 |
if(pos<0)
|
|
|
1246 |
{
|
|
|
1247 |
retVal = KErrArgument;
|
|
|
1248 |
return retVal;
|
|
|
1249 |
}
|
|
|
1250 |
else
|
|
|
1251 |
break;
|
|
|
1252 |
case SEEK_CUR:
|
|
|
1253 |
pos += iPos; //current position + offset
|
|
|
1254 |
break;
|
|
|
1255 |
case SEEK_END:
|
|
|
1256 |
retVal = iFile.Size(pos);
|
|
|
1257 |
switch( retVal)
|
|
|
1258 |
{
|
|
|
1259 |
case KErrNone:
|
|
|
1260 |
pos += lock->l_start; //file size + ofset
|
|
|
1261 |
break;
|
|
|
1262 |
default:
|
|
|
1263 |
return retVal;
|
|
|
1264 |
}
|
|
|
1265 |
|
|
|
1266 |
if(pos<0)
|
|
|
1267 |
{
|
|
|
1268 |
retVal = KErrArgument;
|
|
|
1269 |
return retVal;
|
|
|
1270 |
}
|
|
|
1271 |
break;
|
|
|
1272 |
default:
|
|
|
1273 |
retVal = KErrArgument; //invalid argument
|
|
|
1274 |
return retVal;
|
|
|
1275 |
}
|
|
|
1276 |
|
|
|
1277 |
if( lock_len < 0)
|
|
|
1278 |
{
|
|
|
1279 |
pos += lock_len;
|
|
|
1280 |
lock_len = -lock_len;
|
|
|
1281 |
}
|
|
|
1282 |
return retVal;
|
|
|
1283 |
}
|
|
|
1284 |
// -----------------------------------------------------------------------------
|
|
|
1285 |
// CFileDesc::Fcntl
|
|
|
1286 |
// Symbian File Specific Implementation for fcntl
|
|
|
1287 |
// There is no mapping from Symbian RFile for File fcntl.
|
|
|
1288 |
// This implementation supports fcntl with F_SETFL and F_GETFL as cmd
|
|
|
1289 |
// We can set the Flag as Blocking or Non-Blocking.
|
|
|
1290 |
// -----------------------------------------------------------------------------
|
|
|
1291 |
//
|
|
|
1292 |
TInt CFileDesc::Fcntl(TUint anArg, TUint aCmd)
|
|
|
1293 |
{
|
|
|
1294 |
struct flock *lock = NULL;
|
|
|
1295 |
FSIZE pos = 0,lock_len = -1;
|
|
|
1296 |
TInt lock_type = -1;
|
|
|
1297 |
//return if its an invalid fd
|
|
|
1298 |
if(iFdAttrib & KInvalidFd)
|
|
|
1299 |
{
|
|
|
1300 |
return KErrBadHandle;
|
|
|
1301 |
}
|
|
|
1302 |
TInt retVal = KErrNone;
|
|
|
1303 |
//fcntl supports only F_SETFL and F_GETFL for Non-Blocking I/O
|
|
|
1304 |
//If aCmd and anArg does not match these, return with Error
|
|
|
1305 |
switch( aCmd )
|
|
|
1306 |
{
|
|
|
1307 |
case F_SETFL:
|
|
|
1308 |
{
|
|
|
1309 |
//Set the fcntl Flag
|
|
|
1310 |
if((anArg == O_APPEND) || (anArg == O_NONBLOCK))
|
|
|
1311 |
{
|
|
|
1312 |
iFcntlFlag |= anArg ;
|
|
|
1313 |
}
|
|
|
1314 |
retVal = 0 ;
|
|
|
1315 |
break;
|
|
|
1316 |
}
|
|
|
1317 |
case F_GETFL:
|
|
|
1318 |
{
|
|
|
1319 |
//Return fcntl flag
|
|
|
1320 |
retVal = iFcntlFlag;
|
|
|
1321 |
break;
|
|
|
1322 |
}
|
|
|
1323 |
case F_GETFD:
|
|
|
1324 |
{
|
|
|
1325 |
if(iFdAttrib & KCloseonExec)
|
|
|
1326 |
{
|
|
|
1327 |
retVal = 1;
|
|
|
1328 |
}
|
|
|
1329 |
break;
|
|
|
1330 |
}
|
|
|
1331 |
case F_SETFD:
|
|
|
1332 |
{
|
|
|
1333 |
if(anArg == 1)
|
|
|
1334 |
{
|
|
|
1335 |
iFdAttrib |= SET_CLOSE_ON_EXEC_FLG; // (1 << 2) ;
|
|
|
1336 |
retVal = anArg;
|
|
|
1337 |
}
|
|
|
1338 |
else if(anArg == 0 )
|
|
|
1339 |
{
|
|
|
1340 |
iFdAttrib &= ~SET_CLOSE_ON_EXEC_FLG; //(1 << 2) ;
|
|
|
1341 |
retVal = anArg;
|
|
|
1342 |
}
|
|
|
1343 |
else
|
|
|
1344 |
{
|
|
|
1345 |
retVal = KErrArgument; //return invalid argument
|
|
|
1346 |
}
|
|
|
1347 |
break;
|
|
|
1348 |
}
|
|
|
1349 |
case F_GETLK:
|
|
|
1350 |
{
|
|
|
1351 |
lock = (struct flock*)anArg;
|
|
|
1352 |
retVal=ProcessLockParams(pos, lock_len, lock_type, lock);
|
|
|
1353 |
if(retVal)
|
|
|
1354 |
return retVal;
|
|
|
1355 |
switch( lock_type)
|
|
|
1356 |
{
|
|
|
1357 |
case F_WRLCK:
|
|
|
1358 |
retVal = iFile.Lock(pos ,lock_len); //try to lock the region.
|
|
|
1359 |
if (retVal == KErrNone)
|
|
|
1360 |
{
|
|
|
1361 |
retVal = iFile.UnLock(pos ,lock_len); //if previous lock() is successful then unlock the region
|
|
|
1362 |
lock->l_type = F_UNLCK; //indication that region can be locked
|
|
|
1363 |
}
|
|
|
1364 |
else
|
|
|
1365 |
{
|
|
|
1366 |
retVal = KErrNone; //region cant be lock. return success, but don't change lock->l_type
|
|
|
1367 |
}
|
|
|
1368 |
break;
|
|
|
1369 |
default:
|
|
|
1370 |
retVal = KErrArgument;
|
|
|
1371 |
}
|
|
|
1372 |
break;
|
|
|
1373 |
}
|
|
|
1374 |
case F_SETLK:
|
|
|
1375 |
{
|
|
|
1376 |
lock = (struct flock*)anArg;
|
|
|
1377 |
retVal=ProcessLockParams(pos, lock_len, lock_type, lock);
|
|
|
1378 |
if(retVal)
|
|
|
1379 |
return retVal;
|
|
|
1380 |
switch( lock_type)
|
|
|
1381 |
{
|
|
|
1382 |
case F_WRLCK:
|
|
|
1383 |
retVal = iFile.Lock(pos ,lock_len); //try to lock without waiting
|
|
|
1384 |
break;
|
|
|
1385 |
case F_UNLCK:
|
|
|
1386 |
retVal = iFile.UnLock(pos ,lock_len); //try to unlock without waiting
|
|
|
1387 |
break;
|
|
|
1388 |
case F_RDLCK:
|
|
|
1389 |
retVal = KErrNotSupported;
|
|
|
1390 |
|
|
|
1391 |
default:
|
|
|
1392 |
retVal = KErrArgument; //return invalid argument
|
|
|
1393 |
}
|
|
|
1394 |
break;
|
|
|
1395 |
}
|
|
|
1396 |
default:
|
|
|
1397 |
retVal = KErrNotSupported;
|
|
|
1398 |
}
|
|
|
1399 |
return retVal;
|
|
|
1400 |
}
|
|
|
1401 |
|
|
|
1402 |
// -----------------------------------------------------------------------------
|
|
|
1403 |
// CFileDesc::Truncate
|
|
|
1404 |
// Symbian File Specific Implementation for Truncate
|
|
|
1405 |
// This will truncate the file which is opened in write mode
|
|
|
1406 |
// -----------------------------------------------------------------------------
|
|
|
1407 |
//
|
|
|
1408 |
TInt CFileDesc::Truncate(off_t anOffset)
|
|
|
1409 |
{
|
|
|
1410 |
TInt retVal;
|
|
|
1411 |
//return if its an invalid fd
|
|
|
1412 |
if(iFdAttrib & KInvalidFd)
|
|
|
1413 |
{
|
|
|
1414 |
return KErrBadHandle;
|
|
|
1415 |
}
|
|
|
1416 |
iExt = anOffset;
|
|
|
1417 |
retVal = iFile.SetSize(anOffset);
|
|
|
1418 |
if (retVal == KErrNotSupported)
|
|
|
1419 |
{
|
|
|
1420 |
return KErrArgument;//to work around RFile64::SetSize() return value
|
|
|
1421 |
}
|
|
|
1422 |
return retVal;
|
|
|
1423 |
}
|
|
|
1424 |
|
|
|
1425 |
// Extra support for temporary files
|
|
|
1426 |
TInt CTempFileDesc::Open(const wchar_t* aName, TInt mode)
|
|
|
1427 |
{
|
|
|
1428 |
iSession = Backend()->FileSession();
|
|
|
1429 |
|
|
|
1430 |
TFileName filePath;
|
|
|
1431 |
if (mode & O_TMPFILE) //from tmpfile()
|
|
|
1432 |
{
|
|
|
1433 |
//obtain original mode for tmpfile()
|
|
|
1434 |
mode &= (~O_TMPFILE);
|
|
|
1435 |
filePath.Copy((const TText*)aName);
|
|
|
1436 |
}
|
|
|
1437 |
else //for "TMP:"
|
|
|
1438 |
{
|
|
|
1439 |
TParse path;
|
|
|
1440 |
TInt err = GetFullPath(path, (const TText16*)WIDEP_tmpdir, NULL);
|
|
|
1441 |
if (err != KErrNone)
|
|
|
1442 |
{
|
|
|
1443 |
return err;
|
|
|
1444 |
}
|
|
|
1445 |
filePath.Copy(path.DriveAndPath());
|
|
|
1446 |
}
|
|
|
1447 |
|
|
|
1448 |
if((mode & O_BUFFERED) == 0)
|
|
|
1449 |
{
|
|
|
1450 |
setSize(0);
|
|
|
1451 |
}
|
|
|
1452 |
iFcntlFlag = mode & O_ACCMODE;//setting the fcntl flag
|
|
|
1453 |
TInt ret = Alloc();
|
|
|
1454 |
if (ret != KErrNone)
|
|
|
1455 |
{
|
|
|
1456 |
return ret;
|
|
|
1457 |
}
|
|
|
1458 |
TFileName aPathName;
|
|
|
1459 |
aPathName.Append(iSession.GetSystemDriveChar());
|
|
|
1460 |
aPathName.Append(TChar(KDriveDelimiter));
|
|
|
1461 |
aPathName.Append(_L("\\System\\temp"));
|
|
|
1462 |
if (filePath.Find(aPathName) == 0)
|
|
|
1463 |
{
|
|
|
1464 |
ret = iSession.MkDir(filePath);
|
|
|
1465 |
if (ret != KErrNone && ret != KErrAlreadyExists)
|
|
|
1466 |
{
|
|
|
1467 |
return ret;
|
|
|
1468 |
}
|
|
|
1469 |
else
|
|
|
1470 |
{
|
|
|
1471 |
ret = iFile.Temp(iSession, filePath, iName, EFileShareReadersOrWriters);
|
|
|
1472 |
}
|
|
|
1473 |
}
|
|
|
1474 |
else
|
|
|
1475 |
{
|
|
|
1476 |
ret = iFile.Create(iSession, filePath, EFileShareReadersOrWriters);
|
|
|
1477 |
}
|
|
|
1478 |
return ret;
|
|
|
1479 |
}
|
|
|
1480 |
|
|
|
1481 |
TInt CTempFileDesc::FinalClose()
|
|
|
1482 |
{
|
|
|
1483 |
TInt ret = iFile.FullName(iName);
|
|
|
1484 |
if (ret != KErrNone)
|
|
|
1485 |
{
|
|
|
1486 |
return ret;
|
|
|
1487 |
}
|
|
|
1488 |
iFile.Close();
|
|
|
1489 |
return iSession.Delete(iName);
|
|
|
1490 |
}
|
|
|
1491 |
|
|
|
1492 |
#ifdef SYMBIAN_OE_LIBRT
|
|
|
1493 |
// -----------------------------------------------------------------------------
|
|
|
1494 |
// CSharedMemDesc::CSharedMemDesc : Constructor
|
|
|
1495 |
// Constructs sharedmemory Descriptor
|
|
|
1496 |
// -----------------------------------------------------------------------------
|
|
|
1497 |
CSharedMemDesc::CSharedMemDesc()
|
|
|
1498 |
{
|
|
|
1499 |
iLock.CreateLocal();
|
|
|
1500 |
}
|
|
|
1501 |
|
|
|
1502 |
// -----------------------------------------------------------------------------
|
|
|
1503 |
// CSharedMemDesc::CSharedMemDesc : Destructor
|
|
|
1504 |
// Destructor for sharedmemory Descriptor
|
|
|
1505 |
// -----------------------------------------------------------------------------
|
|
|
1506 |
CSharedMemDesc::~CSharedMemDesc()
|
|
|
1507 |
{
|
|
|
1508 |
iLock.Close();
|
|
|
1509 |
}
|
|
|
1510 |
|
|
|
1511 |
// -----------------------------------------------------------------------------
|
|
|
1512 |
// CSharedMemDesc::Open
|
|
|
1513 |
// Gives sharedmemory Descriptor
|
|
|
1514 |
// -----------------------------------------------------------------------------
|
|
|
1515 |
TInt CSharedMemDesc::Open(const wchar_t* aName, int mode, int perms)
|
|
|
1516 |
{
|
|
|
1517 |
int aerr = 0, err =0;
|
|
|
1518 |
void* ptr = NULL;
|
|
|
1519 |
TInt shmkey = 0;
|
|
|
1520 |
TInt shmid = 0;
|
|
|
1521 |
struct shmid_ds *buf = NULL;
|
|
|
1522 |
|
|
|
1523 |
mode &= (~O_SHMFLG);
|
|
|
1524 |
if(mode == O_WRONLY)
|
|
|
1525 |
{
|
|
|
1526 |
return KErrNone;
|
|
|
1527 |
}
|
|
|
1528 |
|
|
|
1529 |
TFileName shrdmemname;
|
|
|
1530 |
shrdmemname.Copy((const TText*)aName);
|
|
|
1531 |
|
|
|
1532 |
iPerms = perms;
|
|
|
1533 |
iFcntlFlag = mode & O_ACCMODE;
|
|
|
1534 |
shmkey = GeneratePathKey(shrdmemname);
|
|
|
1535 |
switch (mode)
|
|
|
1536 |
{
|
|
|
1537 |
case O_CREAT:
|
|
|
1538 |
case O_CREAT|O_RDWR:
|
|
|
1539 |
shmid = Backend()->iIpcS.shmget(shmkey, SHM_CHUNKSIZE, IPC_CREAT|perms, aerr);
|
|
|
1540 |
if (shmid == -1)
|
|
|
1541 |
{
|
|
|
1542 |
err = aerr;
|
|
|
1543 |
return err;
|
|
|
1544 |
}
|
|
|
1545 |
break;
|
|
|
1546 |
case O_TRUNC:
|
|
|
1547 |
case O_TRUNC|O_RDWR:
|
|
|
1548 |
case O_CREAT|O_TRUNC:
|
|
|
1549 |
shmid = Backend()->iIpcS.shmget(shmkey, SHM_CHUNKSIZE, IPC_CREAT|perms, aerr);
|
|
|
1550 |
if (shmid == -1)
|
|
|
1551 |
{
|
|
|
1552 |
err = aerr;
|
|
|
1553 |
return err;
|
|
|
1554 |
}
|
|
|
1555 |
if (Backend()->iIpcS.shmctl(shmid, IPC_RMID, buf, aerr) == -1)
|
|
|
1556 |
{
|
|
|
1557 |
err = aerr;
|
|
|
1558 |
return err;
|
|
|
1559 |
}
|
|
|
1560 |
shmid = Backend()->iIpcS.shmget(shmkey, SHM_CHUNKSIZE, IPC_CREAT|perms, aerr);
|
|
|
1561 |
if (shmid == -1)
|
|
|
1562 |
{
|
|
|
1563 |
err = aerr;
|
|
|
1564 |
return err;
|
|
|
1565 |
}
|
|
|
1566 |
break;
|
|
|
1567 |
case O_CREAT|O_EXCL:
|
|
|
1568 |
case O_CREAT|O_EXCL|O_RDWR:
|
|
|
1569 |
shmid = Backend()->iIpcS.shmget(shmkey, SHM_CHUNKSIZE, IPC_CREAT|IPC_EXCL|perms, aerr);
|
|
|
1570 |
if (shmid == -1)
|
|
|
1571 |
{
|
|
|
1572 |
err = aerr;
|
|
|
1573 |
return err;
|
|
|
1574 |
}
|
|
|
1575 |
break;
|
|
|
1576 |
case O_CREAT|O_EXCL|O_TRUNC:
|
|
|
1577 |
case O_CREAT|O_EXCL|O_TRUNC|O_RDWR:
|
|
|
1578 |
shmid = Backend()->iIpcS.shmget(shmkey, SHM_CHUNKSIZE, IPC_CREAT|IPC_EXCL|perms, aerr);
|
|
|
1579 |
if (shmid == -1)
|
|
|
1580 |
{
|
|
|
1581 |
err = aerr;
|
|
|
1582 |
return err;
|
|
|
1583 |
}
|
|
|
1584 |
if (Backend()->iIpcS.shmctl(shmid, IPC_RMID, buf, aerr) == -1)
|
|
|
1585 |
{
|
|
|
1586 |
err = aerr;
|
|
|
1587 |
return err;
|
|
|
1588 |
}
|
|
|
1589 |
shmid = Backend()->iIpcS.shmget(shmkey, SHM_CHUNKSIZE, IPC_CREAT|IPC_EXCL|perms, aerr);
|
|
|
1590 |
if (shmid == -1)
|
|
|
1591 |
{
|
|
|
1592 |
err = aerr;
|
|
|
1593 |
return err;
|
|
|
1594 |
}
|
|
|
1595 |
break;
|
|
|
1596 |
default:
|
|
|
1597 |
shmid = Backend()->iIpcS.shmget(shmkey, SHM_CHUNKSIZE, perms, aerr);
|
|
|
1598 |
if (shmid == -1)
|
|
|
1599 |
{
|
|
|
1600 |
err = aerr;
|
|
|
1601 |
return err;
|
|
|
1602 |
}
|
|
|
1603 |
break;
|
|
|
1604 |
}
|
|
|
1605 |
ptr = Backend()->iIpcS.shmat(shmid, (void *)NULL, 0, aerr);
|
|
|
1606 |
if (ptr == (void*)-1)
|
|
|
1607 |
{
|
|
|
1608 |
err = aerr;
|
|
|
1609 |
return err;
|
|
|
1610 |
}
|
|
|
1611 |
iPtr = ptr;
|
|
|
1612 |
iKey = shmkey;
|
|
|
1613 |
return err;
|
|
|
1614 |
}
|
|
|
1615 |
|
|
|
1616 |
TInt CSharedMemDesc::ShmRead(TUint8* aPtr,TInt aLength)
|
|
|
1617 |
{
|
|
|
1618 |
TInt err = KErrNone;
|
|
|
1619 |
iSize = Backend()->iIpcS.GetShmSize(iKey, err);
|
|
|
1620 |
TInt diff = iSize - iPos;
|
|
|
1621 |
if (aLength >= diff)
|
|
|
1622 |
aLength = diff;
|
|
|
1623 |
TPtr8 ptr(aPtr, aLength);
|
|
|
1624 |
ptr.Copy((TUint8*)(iPtr)+iPos, aLength);
|
|
|
1625 |
TInt r = ptr.Length();
|
|
|
1626 |
iPos += r;
|
|
|
1627 |
return r;
|
|
|
1628 |
}
|
|
|
1629 |
|
|
|
1630 |
TInt CSharedMemDesc::DoShmRead (TDes8& aDesc)
|
|
|
1631 |
{
|
|
|
1632 |
TUint8* p = (TUint8*) aDesc.Ptr();
|
|
|
1633 |
TInt max = aDesc.MaxLength();
|
|
|
1634 |
TInt ret = ShmRead(p, max);
|
|
|
1635 |
p += ret;
|
|
|
1636 |
aDesc.SetLength(p-aDesc.Ptr());
|
|
|
1637 |
return aDesc.Length();
|
|
|
1638 |
}
|
|
|
1639 |
|
|
|
1640 |
|
|
|
1641 |
// -----------------------------------------------------------------------------
|
|
|
1642 |
// CSharedMemDesc::Read
|
|
|
1643 |
// Reading from a sharedmemory
|
|
|
1644 |
// -----------------------------------------------------------------------------
|
|
|
1645 |
void CSharedMemDesc::Read(TDes8& aDesc, TRequestStatus& aStatus)
|
|
|
1646 |
{
|
|
|
1647 |
//return if its an invalid fd
|
|
|
1648 |
if(iFdAttrib & KInvalidFd)
|
|
|
1649 |
{
|
|
|
1650 |
Complete(aStatus, KErrBadHandle);
|
|
|
1651 |
return;
|
|
|
1652 |
}
|
|
|
1653 |
//Acquire the Lock before read and release it later
|
|
|
1654 |
iLock.Wait();
|
|
|
1655 |
Complete(aStatus,DoShmRead(aDesc));
|
|
|
1656 |
iLock.Signal();
|
|
|
1657 |
}
|
|
|
1658 |
|
|
|
1659 |
TInt CSharedMemDesc::ShmWrite(TUint8* aPtr,TInt aLength)
|
|
|
1660 |
{
|
|
|
1661 |
TInt err = KErrNone;
|
|
|
1662 |
TInt size = Backend()->iIpcS.GetShmSize(iKey, err);
|
|
|
1663 |
TPtrC8 ptr(aPtr,aLength);
|
|
|
1664 |
TUint8* bufPtr = const_cast<TUint8*>(ptr.Ptr());
|
|
|
1665 |
TInt len = ptr.Length();
|
|
|
1666 |
TInt r = Min(aLength, len);
|
|
|
1667 |
Mem::Copy((TUint8*)(iPtr)+iPos, bufPtr, r);
|
|
|
1668 |
iPos += r;
|
|
|
1669 |
if (iPos > iExt && iExt >= 0)
|
|
|
1670 |
iExt = iPos;
|
|
|
1671 |
if (iExt <= size)
|
|
|
1672 |
iSize = iExt = size;
|
|
|
1673 |
else
|
|
|
1674 |
iSize = iExt;
|
|
|
1675 |
Backend()->iIpcS.SetShmSize(iKey, iSize, err);
|
|
|
1676 |
return r;
|
|
|
1677 |
}
|
|
|
1678 |
|
|
|
1679 |
TInt CSharedMemDesc::DoShmWrite (TDes8& aDesc)
|
|
|
1680 |
{
|
|
|
1681 |
TUint8* p = (TUint8*) aDesc.Ptr();
|
|
|
1682 |
TInt max = aDesc.Length();
|
|
|
1683 |
return ShmWrite(p, max);
|
|
|
1684 |
}
|
|
|
1685 |
|
|
|
1686 |
// -----------------------------------------------------------------------------
|
|
|
1687 |
// CSharedMemDesc::Write
|
|
|
1688 |
// Writing to sharedmemory
|
|
|
1689 |
// -----------------------------------------------------------------------------
|
|
|
1690 |
void CSharedMemDesc::Write(TDes8& aDesc, TRequestStatus& aStatus)
|
|
|
1691 |
{
|
|
|
1692 |
//return if its an invalid fd
|
|
|
1693 |
if(iFdAttrib & KInvalidFd)
|
|
|
1694 |
{
|
|
|
1695 |
Complete(aStatus, KErrBadHandle);
|
|
|
1696 |
return;
|
|
|
1697 |
}
|
|
|
1698 |
//Acquire the Lock before write and release it later
|
|
|
1699 |
iLock.Wait();
|
|
|
1700 |
Complete(aStatus,DoShmWrite(aDesc));
|
|
|
1701 |
iLock.Signal();
|
|
|
1702 |
}
|
|
|
1703 |
|
|
|
1704 |
// -----------------------------------------------------------------------------
|
|
|
1705 |
// CSharedMemDesc::Fcntl
|
|
|
1706 |
// fcntl Implementation for sharedmemory
|
|
|
1707 |
// -----------------------------------------------------------------------------
|
|
|
1708 |
//
|
|
|
1709 |
TInt CSharedMemDesc::Fcntl(TUint anArg, TUint aCmd)
|
|
|
1710 |
{
|
|
|
1711 |
//return if its an invalid fd
|
|
|
1712 |
if(iFdAttrib & KInvalidFd)
|
|
|
1713 |
{
|
|
|
1714 |
return KErrBadHandle;
|
|
|
1715 |
}
|
|
|
1716 |
TInt retVal = KErrNotSupported;
|
|
|
1717 |
//fcntl supports only F_SETFL and F_GETFL for Non-Blocking I/O
|
|
|
1718 |
//If aCmd and anArg does not match these, return with Error
|
|
|
1719 |
switch(aCmd)
|
|
|
1720 |
{
|
|
|
1721 |
case F_SETFL:
|
|
|
1722 |
{
|
|
|
1723 |
//Set the fcntl Flag
|
|
|
1724 |
if(anArg == O_NONBLOCK)
|
|
|
1725 |
{
|
|
|
1726 |
iFcntlFlag |= anArg ;
|
|
|
1727 |
}
|
|
|
1728 |
retVal = 0 ;
|
|
|
1729 |
break;
|
|
|
1730 |
}
|
|
|
1731 |
case F_GETFL:
|
|
|
1732 |
{
|
|
|
1733 |
//Return fcntl flag
|
|
|
1734 |
retVal = iFcntlFlag;
|
|
|
1735 |
break;
|
|
|
1736 |
}
|
|
|
1737 |
case F_GETFD:
|
|
|
1738 |
{
|
|
|
1739 |
if(iFdAttrib & KCloseonExec)
|
|
|
1740 |
{
|
|
|
1741 |
retVal = 1;
|
|
|
1742 |
}
|
|
|
1743 |
break;
|
|
|
1744 |
}
|
|
|
1745 |
case F_SETFD:
|
|
|
1746 |
{
|
|
|
1747 |
if(anArg == 1)
|
|
|
1748 |
{
|
|
|
1749 |
iFdAttrib |= SET_CLOSE_ON_EXEC_FLG; // (1 << 2) ;
|
|
|
1750 |
retVal = anArg;
|
|
|
1751 |
}
|
|
|
1752 |
else if(anArg == 0 )
|
|
|
1753 |
{
|
|
|
1754 |
iFdAttrib &= ~SET_CLOSE_ON_EXEC_FLG; //(1 << 2) ;
|
|
|
1755 |
retVal = anArg;
|
|
|
1756 |
}
|
|
|
1757 |
else
|
|
|
1758 |
{
|
|
|
1759 |
retVal = KErrArgument; //return invalid argument
|
|
|
1760 |
}
|
|
|
1761 |
break;
|
|
|
1762 |
}
|
|
|
1763 |
}
|
|
|
1764 |
return retVal;
|
|
|
1765 |
}
|
|
|
1766 |
|
|
|
1767 |
// -----------------------------------------------------------------------------
|
|
|
1768 |
// CSharedMemDesc::FStat
|
|
|
1769 |
// stat Implementation for sharedmemory
|
|
|
1770 |
// -----------------------------------------------------------------------------
|
|
|
1771 |
//
|
|
|
1772 |
TInt CSharedMemDesc::FStat(struct stat *st)
|
|
|
1773 |
{
|
|
|
1774 |
// set mode as directory
|
|
|
1775 |
TInt err = 0, aerr =0;
|
|
|
1776 |
TInt shmid = 0;
|
|
|
1777 |
struct shmid_ds shmDesc;
|
|
|
1778 |
st->st_mode = S_IFREG|iPerms;
|
|
|
1779 |
shmid = Backend()->iIpcS.shmget(iKey, SHM_CHUNKSIZE, iPerms, aerr);
|
|
|
1780 |
Backend()->iIpcS.shmctl(shmid, IPC_STAT, &shmDesc, aerr);
|
|
|
1781 |
st->st_uid = shmDesc.shm_perm.cuid;
|
|
|
1782 |
st->st_gid = 0;
|
|
|
1783 |
st->st_size = Backend()->iIpcS.GetShmSize(iKey, err);
|
|
|
1784 |
return KErrNone;
|
|
|
1785 |
}
|
|
|
1786 |
|
|
|
1787 |
// -----------------------------------------------------------------------------
|
|
|
1788 |
// CSharedMemDesc::FinalClose
|
|
|
1789 |
// stat Implementation for sharedmemory
|
|
|
1790 |
// -----------------------------------------------------------------------------
|
|
|
1791 |
//
|
|
|
1792 |
TInt CSharedMemDesc::FinalClose()
|
|
|
1793 |
{
|
|
|
1794 |
TInt err = 0;
|
|
|
1795 |
TInt ret = KErrNone;
|
|
|
1796 |
ret = Backend()->iIpcS.shmdt(iPtr, err);
|
|
|
1797 |
iLock.Close();
|
|
|
1798 |
return ret;
|
|
|
1799 |
}
|
|
|
1800 |
|
|
|
1801 |
TInt CSharedMemDesc::Pos()
|
|
|
1802 |
{
|
|
|
1803 |
return iPos;
|
|
|
1804 |
}
|
|
|
1805 |
|
|
|
1806 |
TInt CSharedMemDesc::Ext()
|
|
|
1807 |
{
|
|
|
1808 |
return iExt;
|
|
|
1809 |
}
|
|
|
1810 |
|
|
|
1811 |
//-------------------------------------------------------------------------------
|
|
|
1812 |
// Function Name : CSharedMemDesc::LSeek()
|
|
|
1813 |
// Description : Shall seek to specific position of shared memory
|
|
|
1814 |
//-------------------------------------------------------------------------------
|
|
|
1815 |
TInt CSharedMemDesc::LSeek (off_t& offset, int whence)
|
|
|
1816 |
{
|
|
|
1817 |
//return if its an invalid fd
|
|
|
1818 |
//This scenario comes when the file is closed, but mmap still exists
|
|
|
1819 |
if(iFdAttrib & KInvalidFd)
|
|
|
1820 |
{
|
|
|
1821 |
return KErrBadHandle;
|
|
|
1822 |
}
|
|
|
1823 |
TInt pos=offset;
|
|
|
1824 |
TInt ext=Ext();
|
|
|
1825 |
switch (whence)
|
|
|
1826 |
{
|
|
|
1827 |
case SEEK_SET:
|
|
|
1828 |
break;
|
|
|
1829 |
case SEEK_CUR:
|
|
|
1830 |
pos += Pos();
|
|
|
1831 |
break;
|
|
|
1832 |
case SEEK_END:
|
|
|
1833 |
pos += ext;
|
|
|
1834 |
break;
|
|
|
1835 |
default:
|
|
|
1836 |
return KErrArgument;
|
|
|
1837 |
}
|
|
|
1838 |
if (pos < 0)
|
|
|
1839 |
{
|
|
|
1840 |
return KErrArgument;
|
|
|
1841 |
}
|
|
|
1842 |
iPos = pos;
|
|
|
1843 |
offset = pos;
|
|
|
1844 |
return KErrNone;
|
|
|
1845 |
}
|
|
|
1846 |
|
|
|
1847 |
#endif //SYMBIAN_OE_LIBRT
|
|
|
1848 |
|