--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/cstdlib/USTLIB/POSIXFS.CPP	Fri Jun 04 16:20:51 2010 +0100
@@ -0,0 +1,211 @@
+// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "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:
+// PosixFilesystem class
+// 
+//
+
+#include "SYSIF.H"
+#include "FDESC.H"
+#include "LTIME.H"
+#include "LPOSIX.H"
+#include <fcntl.h>
+#include <sys/errno.h>
+
+wchar_t * PosixFilesystem::getcwd (RFs& aFs, wchar_t* buf, unsigned long len, int& anErrno)
+	{
+	TFullName name;
+	TInt err = aFs.SessionPath(name);
+	if (!err)
+		{
+		TPtr16 pathdes((TText16 *)buf, len);
+		if (pathdes.MaxLength() >= (name.Length() + 1))	//+1 to allow for the null terminator
+			{
+			pathdes.Copy(name);
+			pathdes.ZeroTerminate();
+			return buf;
+			}
+		else
+			err = ERANGE;		//out of range
+		}
+	MapError(err, anErrno);
+	return 0;
+	}
+
+int PosixFilesystem::chdir (RFs& aFs, const wchar_t* aPath, int& anErrno)
+	{
+	TParse name;
+	TInt err=GetFullPath(name, (const TText16 *)aPath, aFs, NULL);
+	if (!err)
+		{
+		TPtrC path=name.DriveAndPath();
+		TUint att=0;
+		if (path.Length()==3)	// Problem in F32 - the root directory has no attributes
+			att=KEntryAttDir;
+		else
+			err=aFs.Att(path, att);
+		if (!err)
+			if (att&KEntryAttDir)
+				err=aFs.SetSessionPath(path);
+			else
+				err=ENOTDIR; 
+		}
+	return MapError(err,anErrno);
+	}
+
+int PosixFilesystem::rmdir (RFs& aFs, const wchar_t* aPath, int& anErrno)
+	{
+	TParse name;
+	TInt err=GetFullPath(name,(const TText16 *)aPath,aFs,NULL);
+	if (!err)
+		{
+		TPtrC path=name.DriveAndPath();
+		TUint att=0;
+		if (path.Length()==3)
+			err=EPERM;	// no, you may not remove the root directory
+		else
+			err=aFs.Att(path, att);
+		if (!err)
+			if (att&KEntryAttDir)
+				{
+				err=aFs.RmDir(path);
+				if (err==KErrInUse)
+					err=EEXIST;	// i.e. directory not empty
+				}
+			else
+				err=ENOTDIR; 
+		}
+	return MapError(err,anErrno);
+	}
+
+
+
+int PosixFilesystem::mkdir (RFs& aFs, const wchar_t* aPath, int perms, int& anErrno)
+	{
+	TParse name;
+	TInt err=GetFullPath(name,(const TText16 *)aPath,aFs,NULL);
+	if (!err)
+		{
+		TPtrC path=name.DriveAndPath();
+		err=aFs.MkDir(path);
+		if (!err)
+			{
+			if ((perms&S_IWUSR)==0)
+				err=aFs.SetAtt(path,KEntryAttReadOnly,0);
+			}
+		}
+	return MapError(err,anErrno);
+	}
+
+int PosixFilesystem::stat (RFs& aFs, const wchar_t* name, struct stat *st, int& anErrno)
+	{
+	TFullName fullName;
+	TInt err=GetFullFile(fullName,(const TText16*)name,aFs);
+	if (!err)
+		{
+		TEntry entry;
+		if (fullName.Length()==3)
+			{
+			entry.iAtt=KEntryAttDir;
+			entry.iModified==TTime(0);
+			}
+		else
+			err=aFs.Entry(fullName,entry);
+		if (!err)
+			{
+			st->st_size = entry.iSize;
+			st->st_dev = st->st_rdev = (dev_t)TDriveUnit(fullName);
+			CFileDesc::MapStat(*st, entry.iModified, entry.iAtt);
+			return 0;
+			}
+		}
+	return MapError(err, anErrno);
+	}
+
+int PosixFilesystem::chmod (RFs& aFs, const wchar_t* name, int perms, int& anErrno)
+	{
+	TFullName fullName;
+	TInt err=GetFullFile(fullName,(const TText16*)name,aFs);
+	if (!err)
+		{
+		if ((perms&S_IWUSR)==0)
+			err=aFs.SetAtt(fullName,KEntryAttReadOnly,0);
+		else
+			err=aFs.SetAtt(fullName,0,KEntryAttReadOnly);
+		}
+	return MapError(err, anErrno);
+	}
+
+int PosixFilesystem::unlink (RFs& aFs, const wchar_t* name, int& anErrno)
+	{
+	TFullName fullName;
+	TInt err=GetFullFile(fullName, (TText16*)name, aFs);
+	if (!err)
+		{
+		TUint att=0;
+		err=aFs.Att(fullName, att);
+		if (!err)
+			if (att&KEntryAttDir)
+				err=EPERM; 
+			else
+				err=aFs.Delete(fullName);
+		}
+	return MapError(err, anErrno);
+	}
+
+int PosixFilesystem::rename (RFs& aFs, const wchar_t* oldname, const wchar_t* newname, int& anErrno)
+	{
+	TFileName oldFullName;
+	TInt err = GetFullFile(oldFullName,(const TText16 *)oldname,aFs);
+	if (!err)
+		{
+		TFileName newFullName;
+		err = GetFullFile(newFullName,(const TText16 *)newname,aFs);
+		if (!err)
+			{
+			// ANSI doesn't require specific handling when newname exists,
+			// so we can just use the EPOC32 semantics and insist that
+			// newname doesn't currently exist.
+			err=aFs.Rename(oldFullName,newFullName);
+			}
+		}
+	return MapError(err, anErrno);
+	}
+
+
+TInt PosixFilesystem::ResolvePath (RFs& aFs, TParse& aResult, const wchar_t* path, TDes* aFilename)
+	{
+	return GetFullPath(aResult,(const TText16*)path,aFs,aFilename);
+	}
+
+
+#ifdef __WINS__
+TInt PosixFilesystem::SetDefaultDir (RFs& /*aFs*/)
+	{
+	// NB. don't do this on WINS because the executable is
+	// something like w:\epoc32\release\wins\deb\mytest.exe (or just mytest.exe or
+	// even ./mytest !!)
+	return KErrNone;
+	}
+#else
+TInt PosixFilesystem::SetDefaultDir (RFs& aFs)
+	{
+	TParse parse;
+	parse.Set(RProcess().FileName(), NULL, NULL);
+#ifdef __SECURE_DATA__
+	return aFs.SetSessionToPrivate(TDriveUnit(parse.Drive()));
+#else
+	return aFs.SetSessionPath(parse.DriveAndPath());
+#endif
+	}
+#endif