path: root/sal/osl/os2/file.cxx

/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: file.cxx,v $
 * $Revision: 1.7 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/


/************************************************************************
 *   ToDo
 *
 *   Fix osl_getCanonicalName
 *
 *   - Fix: check for corresponding struct sizes in exported functions
 *   - check size/use of oslDirectory
 *   - check size/use of oslDirectoryItem
 *   - check size/use of oslFileStatus
 *   - check size/use of oslVolumeDeviceHandle
 *   - check size/use of oslVolumeInfo
 *   - check size/use of oslFileHandle
 ***********************************************************************/

#define INCL_DOSDEVIOCTL                        // OS2 device definitions

#include "system.h"
#include <rtl/alloc.h>

#include "osl/file.hxx"


#include <sal/types.h>
#include <osl/thread.h>
#include <osl/diagnose.h>
#include "file_error_transl.h"
#include <osl/time.h>

#ifndef _FILE_URL_H_
#include "file_url.h"
#endif

#include "file_path_helper.hxx"
#include "uunxapi.hxx"

#ifndef _STRING_H_
#include <string.h>
#endif

#ifndef _CTYPE_H_
#include <ctype.h>
#endif

#ifndef _WCHAR_H_
#include <wchar.h>
#endif

#if OSL_DEBUG_LEVEL > 1
    extern void debug_ustring(rtl_uString*);
#endif


#ifdef DEBUG_OSL_FILE
#   define PERROR( a, b ) perror( a ); fprintf( stderr, b )
#else
#   define PERROR( a, b )
#endif

extern "C" oslFileHandle osl_createFileHandleFromFD( int fd );

    struct errentry errtable[] = {
        {  NO_ERROR,             osl_File_E_None     },  /* 0 */
        {  ERROR_INVALID_FUNCTION,       osl_File_E_INVAL    },  /* 1 */
        {  ERROR_FILE_NOT_FOUND,         osl_File_E_NOENT    },  /* 2 */
        {  ERROR_PATH_NOT_FOUND,         osl_File_E_NOENT    },  /* 3 */
        {  ERROR_TOO_MANY_OPEN_FILES,    osl_File_E_MFILE    },  /* 4 */
        {  ERROR_ACCESS_DENIED,          osl_File_E_ACCES    },  /* 5 */
        {  ERROR_INVALID_HANDLE,         osl_File_E_BADF     },  /* 6 */
        {  ERROR_ARENA_TRASHED,          osl_File_E_NOMEM    },  /* 7 */
        {  ERROR_NOT_ENOUGH_MEMORY,      osl_File_E_NOMEM    },  /* 8 */
        {  ERROR_INVALID_BLOCK,          osl_File_E_NOMEM    },  /* 9 */
        {  ERROR_BAD_ENVIRONMENT,        osl_File_E_2BIG     },  /* 10 */
        {  ERROR_BAD_FORMAT,             osl_File_E_NOEXEC   },  /* 11 */
        {  ERROR_INVALID_ACCESS,         osl_File_E_INVAL    },  /* 12 */
        {  ERROR_INVALID_DATA,           osl_File_E_INVAL    },  /* 13 */
        {  ERROR_INVALID_DRIVE,          osl_File_E_NOENT    },  /* 15 */
        {  ERROR_CURRENT_DIRECTORY,      osl_File_E_ACCES    },  /* 16 */
        {  ERROR_NOT_SAME_DEVICE,        osl_File_E_XDEV     },  /* 17 */
        {  ERROR_NO_MORE_FILES,          osl_File_E_NOENT    },  /* 18 */
        {  ERROR_NOT_READY,              osl_File_E_NOTREADY },  /* 21 */
        {  ERROR_LOCK_VIOLATION,         osl_File_E_ACCES    },  /* 33 */
        {  ERROR_BAD_NETPATH,            osl_File_E_NOENT    },  /* 53 */
        {  ERROR_NETWORK_ACCESS_DENIED,  osl_File_E_ACCES    },  /* 65 */
        {  ERROR_BAD_NET_NAME,           osl_File_E_NOENT    },  /* 67 */
        {  ERROR_FILE_EXISTS,            osl_File_E_EXIST    },  /* 80 */
        {  ERROR_CANNOT_MAKE,            osl_File_E_ACCES    },  /* 82 */
        {  ERROR_FAIL_I24,               osl_File_E_ACCES    },  /* 83 */
        {  ERROR_INVALID_PARAMETER,      osl_File_E_INVAL    },  /* 87 */
        {  ERROR_NO_PROC_SLOTS,          osl_File_E_AGAIN    },  /* 89 */
        {  ERROR_DRIVE_LOCKED,           osl_File_E_ACCES    },  /* 108 */
        {  ERROR_BROKEN_PIPE,            osl_File_E_PIPE     },  /* 109 */
        {  ERROR_DISK_FULL,              osl_File_E_NOSPC    },  /* 112 */
        {  ERROR_INVALID_TARGET_HANDLE,  osl_File_E_BADF     },  /* 114 */
        {  ERROR_INVALID_HANDLE,         osl_File_E_INVAL    },  /* 124 */
        {  ERROR_WAIT_NO_CHILDREN,       osl_File_E_CHILD    },  /* 128 */
        {  ERROR_CHILD_NOT_COMPLETE,     osl_File_E_CHILD    },  /* 129 */
        {  ERROR_DIRECT_ACCESS_HANDLE,   osl_File_E_BADF     },  /* 130 */
        {  ERROR_NEGATIVE_SEEK,          osl_File_E_INVAL    },  /* 131 */
        {  ERROR_SEEK_ON_DEVICE,         osl_File_E_ACCES    },  /* 132 */
        {  ERROR_DIR_NOT_EMPTY,          osl_File_E_NOTEMPTY },  /* 145 */
        {  ERROR_NOT_LOCKED,             osl_File_E_ACCES    },  /* 158 */
        {  ERROR_BAD_PATHNAME,           osl_File_E_NOENT    },  /* 161 */
        {  ERROR_MAX_THRDS_REACHED,      osl_File_E_AGAIN    },  /* 164 */
        {  ERROR_LOCK_FAILED,            osl_File_E_ACCES    },  /* 167 */
        {  ERROR_ALREADY_EXISTS,         osl_File_E_EXIST    },  /* 183 */
        {  ERROR_FILENAME_EXCED_RANGE,   osl_File_E_NOENT    },  /* 206 */
        {  ERROR_NESTING_NOT_ALLOWED,    osl_File_E_AGAIN    },  /* 215 */
        {  ERROR_DIRECTORY,              osl_File_E_NOENT    },  /* 267 */
        //{  ERROR_NOT_ENOUGH_QUOTA,       osl_File_E_NOMEM    }    /* 1816 */
    };

    #define ELEMENTS_OF_ARRAY(arr) (sizeof(arr)/(sizeof((arr)[0])))

    //#####################################################
    oslFileError MapError(APIRET dwError)
    {
        for (int i = 0; i < ELEMENTS_OF_ARRAY(errtable); ++i )
        {
            if (dwError == errtable[i].oscode)
                return static_cast<oslFileError>(errtable[i].errnocode);
        }
        return osl_File_E_INVAL;
    }

/******************************************************************************
 *
 *                  static members
 *
 *****************************************************************************/

static const char * pFileLockEnvVar = (char *) -1;


/******************************************************************************
 *
 *                  C-String Function Declarations
 *
 *****************************************************************************/

static oslFileError osl_psz_getVolumeInformation(const sal_Char* , oslVolumeInfo* pInfo, sal_uInt32 uFieldMask);
static oslFileError osl_psz_removeFile(const sal_Char* pszPath);
static oslFileError osl_psz_createDirectory(const sal_Char* pszPath);
static oslFileError osl_psz_removeDirectory(const sal_Char* pszPath);
static oslFileError osl_psz_copyFile(const sal_Char* pszPath, const sal_Char* pszDestPath);
static oslFileError osl_psz_moveFile(const sal_Char* pszPath, const sal_Char* pszDestPath);
static oslFileError osl_psz_setFileTime(const sal_Char* strFilePath, const TimeValue* pCreationTime, const TimeValue* pLastAccessTime, const TimeValue* pLastWriteTime);


/******************************************************************************
 *
 *                  Static Module Utility Function Declarations
 *
 *****************************************************************************/

static oslFileError  oslDoCopy(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, mode_t nMode, size_t nSourceSize, int DestFileExists);
static oslFileError  oslChangeFileModes(const sal_Char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID);
static int           oslDoCopyLink(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName);
static int           oslDoCopyFile(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, size_t nSourceSize, mode_t mode);
static oslFileError  oslDoMoveFile(const sal_Char* pszPath, const sal_Char* pszDestPath);
rtl_uString*  oslMakeUStrFromPsz(const sal_Char* pszStr,rtl_uString** uStr);

/******************************************************************************
 *
 *                  Non-Static Utility Function Declarations
 *
 *****************************************************************************/

extern "C" int UnicodeToText( char *, size_t, const sal_Unicode *, sal_Int32 );
extern "C" int TextToUnicode(
    const char* text, size_t text_buffer_size,  sal_Unicode* unic_text, sal_Int32 unic_text_buffer_size);

/******************************************************************************
 *
 *                  'removeable device' aka floppy functions
 *
 *****************************************************************************/

static oslVolumeDeviceHandle  osl_isFloppyDrive(const sal_Char* pszPath);
static oslFileError   osl_mountFloppy(oslVolumeDeviceHandle hFloppy);
static oslFileError   osl_unmountFloppy(oslVolumeDeviceHandle hFloppy);

#ifdef DEBUG_OSL_FILE
static void           osl_printFloppyHandle(oslVolumeDeviceHandleImpl* hFloppy);
#endif

/**********************************************
 * _osl_openLocalRoot
 * enumerate available drives
 *********************************************/
static oslFileError _osl_openLocalRoot( rtl_uString *strDirectoryPath, oslDirectory *pDirectory)
{
    rtl_uString     *ustrSystemPath = NULL;
    oslFileError    error;

    if ( !pDirectory )
        return osl_File_E_INVAL;

    *pDirectory = NULL;

    error = osl_getSystemPathFromFileURL_Ex( strDirectoryPath, &ustrSystemPath, sal_False );

    if ( osl_File_E_None == error )
    {
        /* create and initialize impl structure */
        DirectoryImpl* pDirImpl = (DirectoryImpl*) rtl_allocateMemory( sizeof(DirectoryImpl) );
        if( pDirImpl )
        {
            ULONG   ulDriveNum;
            APIRET  rc;
            pDirImpl->uType = DIRECTORYTYPE_LOCALROOT;
            pDirImpl->ustrPath = ustrSystemPath;
            rc = DosQueryCurrentDisk (&ulDriveNum, &pDirImpl->ulDriveMap);
            pDirImpl->pDirStruct = 0;
            pDirImpl->ulNextDrive = 1;
            pDirImpl->ulNextDriveMask = 1;

            // determine number of floppy-drives
            BYTE nFloppies;
            rc = DosDevConfig( (void*) &nFloppies, DEVINFO_FLOPPY );
            if (nFloppies == 0) {
                // if no floppies, start with 3rd drive (C:)
                pDirImpl->ulNextDrive = 3;
                pDirImpl->ulNextDriveMask <<= 2;
            } else if (nFloppies == 1) {
                // mask drive B (second bit) in this case
                pDirImpl->ulDriveMap &= ~0x02;
            }
            *pDirectory = (oslDirectory) pDirImpl;
            return osl_File_E_None;
        }
        else
        {
            errno = osl_File_E_NOMEM;
        }

    }

    rtl_uString_release( ustrSystemPath );
    return error;
}

/**********************************************
 * _osl_getNextDrive
 *********************************************/
static oslFileError SAL_CALL _osl_getNextDrive(
    oslDirectory Directory, oslDirectoryItem *pItem, sal_uInt32 uHint )
{
    DirectoryImpl   *pDirImpl = (DirectoryImpl *)Directory;
    DirectoryItem_Impl  *pItemImpl = NULL;
    rtl_uString         * ustrDrive = NULL;
    BOOL                fSuccess;
    char                buffer[3];

    uHint = uHint; /* avoid warnings */

    if ( !pItem )
        return osl_File_E_INVAL;

    *pItem = NULL;

    if ( !pDirImpl )
        return osl_File_E_INVAL;

    while( pDirImpl->ulNextDrive <= 26)
    {
        // exit if  bit==1 -> drive found
        if (pDirImpl->ulDriveMap & pDirImpl->ulNextDriveMask) {

            /* convert file name to unicode */
            buffer[0] = '@' + pDirImpl->ulNextDrive;
            buffer[1] = ':';
            buffer[2] = 0;

            pItemImpl = (DirectoryItem_Impl*) rtl_allocateMemory(sizeof(DirectoryItem_Impl));
            if ( !pItemImpl )
                return osl_File_E_NOMEM;

            memset( pItemImpl, 0, sizeof(DirectoryItem_Impl) );
            pItemImpl->uType = DIRECTORYITEM_DRIVE;
            pItemImpl->nRefCount = 1;

            rtl_string2UString( &pItemImpl->ustrDrive, buffer, 3,
                osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
            OSL_ASSERT(pItemImpl->ustrDrive != 0);

            /* use drive as directory item */
            *pItem = (oslDirectoryItem) pItemImpl;
        }
        // scan next bit position
        pDirImpl->ulNextDrive++;
        pDirImpl->ulNextDriveMask <<= 1;

        if (*pItem) // item assigned, return now.
            return osl_File_E_None;
    }

    // no more items
    return osl_File_E_NOENT;
}

/**********************************************
 * _osl_readdir_impl_
 *
 * readdir wrapper, filters out "." and ".."
 * on request
 *********************************************/

static struct dirent* _osl_readdir_impl_(DIR* pdir, sal_Bool bFilterLocalAndParentDir)
{
    struct dirent* pdirent;

    while ((pdirent = readdir(pdir)) != NULL)
    {
        if (bFilterLocalAndParentDir &&
            ((0 == strcmp(pdirent->d_name, ".")) || (0 == strcmp(pdirent->d_name, ".."))))
            continue;
        else
            break;
    }

    return pdirent;
}

/*******************************************************************
 *  osl_openDirectory
 ******************************************************************/

oslFileError SAL_CALL osl_openDirectory(rtl_uString* ustrDirectoryURL, oslDirectory* pDirectory)
{
    rtl_uString* ustrSystemPath = NULL;
    oslFileError eRet;

    char path[PATH_MAX];

    OSL_ASSERT(ustrDirectoryURL && (ustrDirectoryURL->length > 0));
    OSL_ASSERT(pDirectory);

    if (0 == ustrDirectoryURL->length )
        return osl_File_E_INVAL;

    if ( 0 == rtl_ustr_compareIgnoreAsciiCase( ustrDirectoryURL->buffer, (const sal_Unicode*)L"file:///" ) )
        return _osl_openLocalRoot( ustrDirectoryURL, pDirectory );

    /* convert file URL to system path */
    eRet = osl_getSystemPathFromFileURL_Ex(ustrDirectoryURL, &ustrSystemPath, sal_False);

    if( osl_File_E_None != eRet )
        return eRet;

    osl_systemPathRemoveSeparator(ustrSystemPath);

    /* convert unicode path to text */
    if ( UnicodeToText( path, PATH_MAX, ustrSystemPath->buffer, ustrSystemPath->length ) )
    {
        // if only the drive is specified (x:), add a \ (x:\) otherwise current
        // directory is browsed instead of root.
        if (strlen( path) == 2 && path[1] == ':')
            strcat( path, "\\");
        /* open directory */
        DIR *pdir = opendir( path );

        if( pdir )
        {
            /* create and initialize impl structure */
            DirectoryImpl* pDirImpl = (DirectoryImpl*) rtl_allocateMemory( sizeof(DirectoryImpl) );

            if( pDirImpl )
            {
                pDirImpl->uType = DIRECTORYTYPE_FILESYSTEM;
                pDirImpl->pDirStruct = pdir;
                pDirImpl->ustrPath = ustrSystemPath;

                *pDirectory = (oslDirectory) pDirImpl;
                return osl_File_E_None;
            }
            else
            {
                errno = ENOMEM;
                closedir( pdir );
            }
        }
        else
            /* should be removed by optimizer in product version */
            PERROR( "osl_openDirectory", path );
    }

    rtl_uString_release( ustrSystemPath );

    return oslTranslateFileError(OSL_FET_ERROR, errno);
}


/****************************************************************************
 *  osl_getNextDirectoryItem
 ***************************************************************************/

oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory Directory, oslDirectoryItem* pItem, sal_uInt32 uHint)
{
    DirectoryImpl* pDirImpl     = (DirectoryImpl*)Directory;
    DirectoryItem_Impl  *pItemImpl = NULL;
    rtl_uString*      ustrFileName = NULL;
    rtl_uString*      ustrFilePath = NULL;
    struct dirent*    pEntry;

    OSL_ASSERT(Directory);
    OSL_ASSERT(pItem);

    if ((NULL == Directory) || (NULL == pItem))
        return osl_File_E_INVAL;

    if ( pDirImpl->uType == DIRECTORYTYPE_LOCALROOT)
        return _osl_getNextDrive( Directory, pItem, uHint );

    pEntry = _osl_readdir_impl_(pDirImpl->pDirStruct, sal_True);

    if (NULL == pEntry)
        return osl_File_E_NOENT;

    pItemImpl = (DirectoryItem_Impl*) rtl_allocateMemory(sizeof(DirectoryItem_Impl));
    if ( !pItemImpl )
        return osl_File_E_NOMEM;

    memset( pItemImpl, 0, sizeof(DirectoryItem_Impl) );
    pItemImpl->uType = DIRECTORYITEM_FILE;
    pItemImpl->nRefCount = 1;
    pItemImpl->d_attr = pEntry->d_attr;

    /* convert file name to unicode */
    rtl_string2UString( &ustrFileName, pEntry->d_name, strlen( pEntry->d_name ),
        osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
    OSL_ASSERT(ustrFileName != 0);

    osl_systemPathMakeAbsolutePath(pDirImpl->ustrPath, ustrFileName, &pItemImpl->ustrFilePath);
    rtl_uString_release( ustrFileName );

    *pItem = (oslDirectoryItem)pItemImpl;
    return osl_File_E_None;
}

/****************************************************************************/
/*  osl_closeDirectory */
/****************************************************************************/

oslFileError SAL_CALL osl_closeDirectory( oslDirectory Directory )
{
    DirectoryImpl* pDirImpl = (DirectoryImpl*) Directory;
    oslFileError err = osl_File_E_None;

    OSL_ASSERT( Directory );

    if( NULL == pDirImpl )
        return osl_File_E_INVAL;

    switch ( pDirImpl->uType )
    {
    case DIRECTORYTYPE_FILESYSTEM:
        if( closedir( pDirImpl->pDirStruct ) )
            err = oslTranslateFileError(OSL_FET_ERROR, errno);
        break;
    case DIRECTORYTYPE_LOCALROOT:
        err = osl_File_E_None;
        break;
#if 0
    case DIRECTORYTYPE_NETROOT:
        {
            DWORD err = WNetCloseEnum(pDirImpl->hDirectory);
            eError = (err == NO_ERROR) ? osl_File_E_None : MapError(err);
        }
        break;
#endif
    default:
        OSL_ENSURE( 0, "Invalid directory type" );
        break;
    }

    /* cleanup members */
    rtl_uString_release( pDirImpl->ustrPath );

    rtl_freeMemory( pDirImpl );

    return err;
}

/****************************************************************************/
/*  osl_getDirectoryItem */
/****************************************************************************/

oslFileError SAL_CALL osl_getDirectoryItem( rtl_uString* ustrFileURL, oslDirectoryItem* pItem )
{
    rtl_uString*    strSysFilePath = NULL;
    oslFileError    error      = osl_File_E_INVAL;
    ULONG           dwPathType;
    PATHTYPE        type = PATHTYPE_FILE;

    OSL_ASSERT(ustrFileURL);
    OSL_ASSERT(pItem);

    /* Assume failure */
    if ( !pItem )
        return osl_File_E_INVAL;
    *pItem = NULL;

    if (0 == ustrFileURL->length || NULL == pItem)
        return osl_File_E_INVAL;

    error = osl_getSystemPathFromFileURL_Ex(ustrFileURL, &strSysFilePath, sal_False);

    if (osl_File_E_None != error)
        return error;

    dwPathType = IsValidFilePath( strSysFilePath->buffer, NULL, VALIDATEPATH_NORMAL );

    if ( dwPathType & PATHTYPE_IS_VOLUME )
        type = PATHTYPE_VOLUME;
    else if ( dwPathType & PATHTYPE_IS_SERVER )
        type = PATHTYPE_NETSERVER;
    else
        type = PATHTYPE_FILE;

    switch ( type )
    {
    case PATHTYPE_NETSERVER:
        {
            DirectoryItem_Impl* pItemImpl =
                reinterpret_cast<DirectoryItem_Impl*>(rtl_allocateMemory(sizeof(DirectoryItem_Impl)));

            if ( !pItemImpl )
                error = osl_File_E_NOMEM;

            if ( osl_File_E_None == error )
            {
                memset( pItemImpl, 0, sizeof(DirectoryItem_Impl) );
                pItemImpl->uType = DIRECTORYITEM_SERVER;
                pItemImpl->nRefCount = 1;
                rtl_uString_assign( &pItemImpl->ustrFilePath, strSysFilePath );

                *pItem = pItemImpl;
            }
        }
        break;
    case PATHTYPE_VOLUME:
        {
            DirectoryItem_Impl* pItemImpl =
                reinterpret_cast<DirectoryItem_Impl*>(rtl_allocateMemory(sizeof(DirectoryItem_Impl)));

            if ( !pItemImpl )
                error = osl_File_E_NOMEM;

            if ( osl_File_E_None == error )
            {
                memset( pItemImpl, 0, sizeof(DirectoryItem_Impl) );
                pItemImpl->uType = DIRECTORYITEM_DRIVE;
                pItemImpl->nRefCount = 1;
                rtl_uString_assign( &pItemImpl->ustrDrive, strSysFilePath );

                if ( pItemImpl->ustrDrive->buffer[pItemImpl->ustrDrive->length-1] != sal_Unicode('\\') )
                    rtl_uString_newConcat( &pItemImpl->ustrDrive,
                                            pItemImpl->ustrDrive, rtl::OUString::createFromAscii( "\\" ).pData);

                *pItem = pItemImpl;
            }
        }
        break;
    default:
    case PATHTYPE_FILE:
        {
            if ( strSysFilePath->length > 0 && strSysFilePath->buffer[strSysFilePath->length - 1] == '\\' )
                rtl_uString_newFromStr_WithLength( &strSysFilePath, strSysFilePath->buffer, strSysFilePath->length - 1 );

            if (0 == access_u(strSysFilePath, F_OK))
            {
                DirectoryItem_Impl  *pItemImpl =
                    reinterpret_cast<DirectoryItem_Impl*>(rtl_allocateMemory(sizeof(DirectoryItem_Impl)));

                memset( pItemImpl, 0, sizeof(DirectoryItem_Impl) );
                pItemImpl->uType = DIRECTORYITEM_FILE;
                pItemImpl->nRefCount = 1;
                rtl_uString_assign( &pItemImpl->ustrFilePath, strSysFilePath );

                *pItem = pItemImpl;
            }
            else
                error = oslTranslateFileError(OSL_FET_ERROR, errno);
        }
        break;
    }

    if ( strSysFilePath )
        rtl_uString_release( strSysFilePath );

    return error;
}

/****************************************************************************/
/*  osl_acquireDirectoryItem */
/****************************************************************************/

oslFileError osl_acquireDirectoryItem( oslDirectoryItem Item )
{
    OSL_ASSERT( Item );
    DirectoryItem_Impl  *pItemImpl = (DirectoryItem_Impl *)Item;

    if ( !pItemImpl )
        return osl_File_E_INVAL;

    pItemImpl->nRefCount++;
    return osl_File_E_None;
}

/****************************************************************************/
/*  osl_releaseDirectoryItem */
/****************************************************************************/

oslFileError osl_releaseDirectoryItem( oslDirectoryItem Item )
{
    OSL_ASSERT( Item );
    DirectoryItem_Impl  *pItemImpl = (DirectoryItem_Impl *)Item;

    if ( !pItemImpl )
        return osl_File_E_INVAL;

    if ( ! --pItemImpl->nRefCount )
    {
        if (pItemImpl->ustrFilePath)
            rtl_uString_release( pItemImpl->ustrFilePath );
        if (pItemImpl->ustrDrive)
            rtl_uString_release( pItemImpl->ustrDrive );
        rtl_freeMemory( pItemImpl );
    }
    return osl_File_E_None;
}

/****************************************************************************
 *  osl_createFileHandleFromFD
 ***************************************************************************/

oslFileHandle osl_createFileHandleFromFD( int fd )
{
    oslFileHandleImpl* pHandleImpl = NULL;

    if ( fd >= 0 )
    {
        pHandleImpl = (oslFileHandleImpl*) rtl_allocateMemory( sizeof(oslFileHandleImpl) );

        if( pHandleImpl )
        {
            pHandleImpl->ustrFilePath = NULL;
            rtl_uString_new( &pHandleImpl->ustrFilePath );
            pHandleImpl->fd = fd;

            /* FIXME: should detect whether the file has been locked */
            pHandleImpl->bLocked = sal_True;
        }
    }

    return (oslFileHandle)pHandleImpl;
}

/****************************************************************************
 *  osl_openFile
 ***************************************************************************/

oslFileError osl_openFile( rtl_uString* ustrFileURL, oslFileHandle* pHandle, sal_uInt32 uFlags )
{
    oslFileHandleImpl* pHandleImpl = NULL;
    oslFileError eRet;
    rtl_uString* ustrFilePath = NULL;

    char buffer[PATH_MAX];
    int  fd;
    int  mode  = S_IRUSR | S_IRGRP | S_IROTH;
    int  flags = O_RDONLY;

    struct flock aflock;

    /* locking the complete file */
    aflock.l_type = 0;
    aflock.l_whence = SEEK_SET;
    aflock.l_start = 0;
    aflock.l_len = 0;

    OSL_ASSERT( ustrFileURL );
    OSL_ASSERT( pHandle );

    if( ( 0 == ustrFileURL->length ) )
        return osl_File_E_INVAL;

    /* convert file URL to system path */
    eRet = osl_getSystemPathFromFileURL( ustrFileURL, &ustrFilePath );

    if( osl_File_E_None != eRet )
        return eRet;

    osl_systemPathRemoveSeparator(ustrFilePath);

    /* convert unicode path to text */
    if( UnicodeToText( buffer, PATH_MAX, ustrFilePath->buffer, ustrFilePath->length ) )
    {
        /* we do not open devices or such here */
        if( !( uFlags & osl_File_OpenFlag_Create ) )
        {
            struct stat aFileStat;

            if( 0 > stat( buffer, &aFileStat ) )
            {
                PERROR( "osl_openFile", buffer );
                eRet = oslTranslateFileError(OSL_FET_ERROR, errno );
            }

            else if( !S_ISREG( aFileStat.st_mode ) )
            {
                eRet = osl_File_E_INVAL;
            }
        }

        if( osl_File_E_None == eRet )
        {
            /*
             * set flags and mode
             */

            if ( uFlags & osl_File_OpenFlag_Write )
            {
                mode |= S_IWUSR | S_IWGRP | S_IWOTH;
                flags = O_RDWR;
                aflock.l_type = F_WRLCK;
            }

            if ( uFlags & osl_File_OpenFlag_Create )
            {
                mode |= S_IWUSR | S_IWGRP | S_IWOTH;
                flags = O_CREAT | O_EXCL | O_RDWR;
            }

            /* open the file */
            fd = open( buffer, flags | O_BINARY, mode);
            if ( fd >= 0 )
            {
                sal_Bool bNeedsLock = ( ( uFlags & osl_File_OpenFlag_NoLock ) == 0 );
                sal_Bool bLocked = sal_False;
                if( bNeedsLock )
                {
                    /* check if file lock is enabled and clear l_type member of flock otherwise */
                    if( (char *) -1 == pFileLockEnvVar )
                    {
                        /* FIXME: this is not MT safe */
                        pFileLockEnvVar = getenv("SAL_ENABLE_FILE_LOCKING");

                        if( NULL == pFileLockEnvVar)
                            pFileLockEnvVar = getenv("STAR_ENABLE_FILE_LOCKING");
                    }

                    if( NULL == pFileLockEnvVar )
                        aflock.l_type = 0;

                    /* lock the file if flock.l_type is set */
                    bLocked = ( F_WRLCK != aflock.l_type || -1 != fcntl( fd, F_SETLK, &aflock ) );
                }

                if ( !bNeedsLock || bLocked )
                {
                    /* allocate memory for impl structure */
                    pHandleImpl = (oslFileHandleImpl*) rtl_allocateMemory( sizeof(oslFileHandleImpl) );
                    if( pHandleImpl )
                    {
                        pHandleImpl->ustrFilePath = ustrFilePath;
                        pHandleImpl->fd = fd;
                        pHandleImpl->bLocked = bLocked;

                        *pHandle = (oslFileHandle) pHandleImpl;

                        return osl_File_E_None;
                    }
                    else
                    {
                        errno = ENOMEM;
                    }
                }

                close( fd );
            }

            PERROR( "osl_openFile", buffer );
            eRet = oslTranslateFileError(OSL_FET_ERROR, errno );
        }
    }
    else
        eRet = osl_File_E_INVAL;

    rtl_uString_release( ustrFilePath );
    return eRet;
}

/****************************************************************************/
/*  osl_closeFile */
/****************************************************************************/

oslFileError osl_closeFile( oslFileHandle Handle )
{
    oslFileHandleImpl* pHandleImpl = (oslFileHandleImpl *) Handle;
    oslFileError eRet = osl_File_E_INVAL;

    OSL_ASSERT( Handle );

    if( pHandleImpl )
    {
        rtl_uString_release( pHandleImpl->ustrFilePath );

        /* release file lock if locking is enabled */
        if( pFileLockEnvVar )
        {
            struct flock aflock;

            aflock.l_type = F_UNLCK;
            aflock.l_whence = SEEK_SET;
            aflock.l_start = 0;
            aflock.l_len = 0;

            if ( pHandleImpl->bLocked )
            {
                /* FIXME: check if file is really locked ?  */

                /* release the file share lock on this file */
                if( -1 == fcntl( pHandleImpl->fd, F_SETLK, &aflock ) )
                    PERROR( "osl_closeFile", "unlock failed" );
            }
        }

        if( 0 > close( pHandleImpl->fd ) )
        {
            eRet = oslTranslateFileError(OSL_FET_ERROR, errno );
        }
        else
            eRet = osl_File_E_None;

        rtl_freeMemory( pHandleImpl );
    }

    return eRet;
}

/****************************************************************************/
/*  osl_isEndOfFile */
/****************************************************************************/

oslFileError SAL_CALL osl_isEndOfFile( oslFileHandle Handle, sal_Bool *pIsEOF )
{
    oslFileHandleImpl* pHandleImpl = (oslFileHandleImpl *) Handle;
    oslFileError eRet = osl_File_E_INVAL;

    if ( pHandleImpl)
    {
        long curPos = lseek( pHandleImpl->fd, 0, SEEK_CUR );

        if ( curPos >= 0 )
        {
            long endPos = lseek( pHandleImpl->fd, 0, SEEK_END  );

            if ( endPos >= 0 )
            {
                *pIsEOF = ( curPos == endPos );
                curPos = lseek( pHandleImpl->fd, curPos, SEEK_SET );

                if ( curPos >= 0 )
                    eRet = osl_File_E_None;
                else
                    eRet = oslTranslateFileError(OSL_FET_ERROR, errno );
            }
            else
                eRet = oslTranslateFileError(OSL_FET_ERROR, errno );
        }
        else
            eRet = oslTranslateFileError(OSL_FET_ERROR, errno );
    }

    return eRet;
}


/****************************************************************************/
/*  osl_moveFile */
/****************************************************************************/

oslFileError osl_moveFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL )
{
    char srcPath[PATH_MAX];
    char destPath[PATH_MAX];
    oslFileError eRet;
    APIRET rc;

    OSL_ASSERT( ustrFileURL );
    OSL_ASSERT( ustrDestURL );

    /* convert source url to system path */
    eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL );
    if( eRet != osl_File_E_None )
        return eRet;

    /* convert destination url to system path */
    eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL );
    if( eRet != osl_File_E_None )
        return eRet;

    //YD 01/05/06 rename() can overwrite existing files.
    rc = DosDelete( (PCSZ)destPath);
    rc = DosMove( (PCSZ)srcPath, (PCSZ)destPath);
    if (!rc)
        eRet = osl_File_E_None;
    else
        eRet = MapError( rc);

    return eRet;
}

/****************************************************************************/
/*  osl_copyFile */
/****************************************************************************/

#define TMP_DEST_FILE_EXTENSION ".osl-tmp"

static oslFileError oslDoCopy(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, mode_t nMode, size_t nSourceSize, int DestFileExists)
{
    int      nRet=0;
    sal_Char pszTmpDestFile[PATH_MAX];
    size_t   size_tmp_dest_buff = sizeof(pszTmpDestFile);

    /* Quick fix for #106048, the whole copy file function seems
       to be erroneous anyway and needs to be rewritten.
       Besides osl_copyFile is currently not used from OO/SO code.
    */
    memset(pszTmpDestFile, 0, size_tmp_dest_buff);

    if ( DestFileExists )
    {
        strncpy(pszTmpDestFile, pszDestFileName, size_tmp_dest_buff - 1);

        if ((strlen(pszTmpDestFile) + strlen(TMP_DEST_FILE_EXTENSION)) >= size_tmp_dest_buff)
            return osl_File_E_NAMETOOLONG;

        strncat(pszTmpDestFile, TMP_DEST_FILE_EXTENSION, strlen(TMP_DEST_FILE_EXTENSION));

        /* FIXME: what if pszTmpDestFile already exists? */
        /*        with getcanonical??? */
        nRet=rename(pszDestFileName,pszTmpDestFile);
    }

    /* mfe: should be S_ISREG */
    if ( !S_ISLNK(nMode) )
    {
        /* copy SourceFile to DestFile */
        nRet = oslDoCopyFile(pszSourceFileName,pszDestFileName,nSourceSize, nMode);
    }
    /* mfe: OK redundant at the moment */
    else if ( S_ISLNK(nMode) )
    {
        nRet = oslDoCopyLink(pszSourceFileName,pszDestFileName);
    }
    else
    {
        /* mfe: what to do here? */
        nRet=ENOSYS;
    }

    if ( nRet > 0 && DestFileExists == 1 )
    {
        unlink(pszDestFileName);
        rename(pszTmpDestFile,pszDestFileName);
    }

    if ( nRet > 0 )
    {
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    if ( DestFileExists == 1 )
    {
        unlink(pszTmpDestFile);
    }

    return osl_File_E_None;
}

/*****************************************
 * oslChangeFileModes
 ****************************************/

static oslFileError oslChangeFileModes( const sal_Char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID)
{
    int nRet=0;
    struct utimbuf aTimeBuffer;

    nRet = chmod(pszFileName,nMode);
    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    aTimeBuffer.actime=nAcTime;
    aTimeBuffer.modtime=nModTime;
    nRet=utime(pszFileName,&aTimeBuffer);
    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    if ( nUID != getuid() )
    {
        nUID=getuid();
    }

    nRet=chown(pszFileName,nUID,nGID);
    if ( nRet < 0 )
    {
        nRet=errno;

        /* mfe: do not return an error here! */
        /* return oslTranslateFileError(nRet);*/
    }

    return osl_File_E_None;
}

/*****************************************
 * oslDoCopyLink
 ****************************************/

static int oslDoCopyLink(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName)
{
    int nRet=0;

    /* mfe: if dest file is symbolic link remove the link and place the file instead (hro says so) */
    /* mfe: if source is a link copy the link and not the file it points to (hro says so) */
    sal_Char pszLinkContent[PATH_MAX];

    pszLinkContent[0] = '\0';

    nRet = readlink(pszSourceFileName,pszLinkContent,PATH_MAX);

    if ( nRet < 0 )
    {
        nRet=errno;
        return nRet;
    }
    else
        pszLinkContent[ nRet ] = 0;

    nRet = symlink(pszLinkContent,pszDestFileName);

    if ( nRet < 0 )
    {
        nRet=errno;
        return nRet;
    }

    return 0;
}

/*****************************************
 * oslDoCopyFile
 ****************************************/

static int oslDoCopyFile(const sal_Char* pszSourceFileName, const sal_Char* pszDestFileName, size_t nSourceSize, mode_t mode)
{
    int SourceFileFD=0;
    int DestFileFD=0;
    int nRet=0;
    void* pSourceFile=0;
    char    buffer[ 4096];

    SourceFileFD=open(pszSourceFileName,O_RDONLY | O_BINARY);
    if ( SourceFileFD < 0 )
    {
        nRet=errno;
        return nRet;
    }

    DestFileFD=open(pszDestFileName, O_WRONLY | O_CREAT | O_BINARY, mode);
    if ( DestFileFD < 0 )
    {
        nRet=errno;
        close(SourceFileFD);
        return nRet;
    }

    /* HACK: because memory mapping fails on various
       platforms if the size of the source file is  0 byte */
    if (0 == nSourceSize)
    {
        close(SourceFileFD);
        close(DestFileFD);
        return 0;
    }

    while( (nRet = read(SourceFileFD, buffer, sizeof(buffer))) !=0 )
    {
        nRet = write( DestFileFD, buffer, nRet);
    }

    close(SourceFileFD);
    close(DestFileFD);

    return nRet;
}

static oslFileError osl_psz_copyFile( const sal_Char* pszPath, const sal_Char* pszDestPath )
{
    time_t nAcTime=0;
    time_t nModTime=0;
    uid_t nUID=0;
    gid_t nGID=0;
    int nRet=0;
    mode_t nMode=0;
    struct stat aFileStat;
    oslFileError tErr=osl_File_E_invalidError;
    size_t nSourceSize=0;
    int DestFileExists=1;

    /* mfe: does the source file really exists? */
    nRet = lstat(pszPath,&aFileStat);

    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    /* mfe: we do only copy files here! */
    if ( S_ISDIR(aFileStat.st_mode) )
    {
        return osl_File_E_ISDIR;
    }

    nSourceSize=(size_t)aFileStat.st_size;
    nMode=aFileStat.st_mode;
    nAcTime=aFileStat.st_atime;
    nModTime=aFileStat.st_mtime;
    nUID=aFileStat.st_uid;
    nGID=aFileStat.st_gid;

    nRet = stat(pszDestPath,&aFileStat);
    if ( nRet < 0 )
    {
        nRet=errno;

        if ( nRet == ENOENT )
        {
            DestFileExists=0;
        }
/*        return oslTranslateFileError(nRet);*/
    }

    /* mfe: the destination file must not be a directory! */
    if ( nRet == 0 && S_ISDIR(aFileStat.st_mode) )
    {
        return osl_File_E_ISDIR;
    }
    else
    {
        /* mfe: file does not exists or is no dir */
    }

    tErr = oslDoCopy(pszPath,pszDestPath,nMode,nSourceSize,DestFileExists);

    if ( tErr != osl_File_E_None )
    {
        return tErr;
    }

    /*
     *   mfe: ignore return code
     *        since only  the success of the copy is
     *        important
     */
    oslChangeFileModes(pszDestPath,nMode,nAcTime,nModTime,nUID,nGID);

    return tErr;
}

oslFileError osl_copyFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL )
{
    char srcPath[PATH_MAX];
    char destPath[PATH_MAX];
    oslFileError eRet;
    APIRET rc;

    OSL_ASSERT( ustrFileURL );
    OSL_ASSERT( ustrDestURL );

    /* convert source url to system path */
    eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL );
    if( eRet != osl_File_E_None )
        return eRet;

    /* convert destination url to system path */
    eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL );
    if( eRet != osl_File_E_None )
        return eRet;

    return osl_psz_copyFile( srcPath, destPath );
}

/****************************************************************************/
/*  osl_removeFile */
/****************************************************************************/

oslFileError osl_removeFile( rtl_uString* ustrFileURL )
{
    char path[PATH_MAX];
    oslFileError eRet;
    APIRET rc;

    OSL_ASSERT( ustrFileURL );

    /* convert file url to system path */
    eRet = FileURLToPath( path, PATH_MAX, ustrFileURL );
    if( eRet != osl_File_E_None )
        return eRet;

    rc = DosDelete( (PCSZ)path);
    if (!rc)
        eRet = osl_File_E_None;
    else
        eRet = MapError( rc);

    return eRet;
}

/****************************************************************************/
/*  osl_getVolumeInformation */
/****************************************************************************/

#define TXFSDC_BLOCKR         0x00              // block device removable
#define TXFSDC_GETBPB         0x00              // get device bpb info
#define TXFSBPB_REMOVABLE     0x08              // BPB attribute for removable

typedef struct drivecmd
{
   BYTE                cmd;                     // 0=unlock 1=lock 2=eject
   BYTE                drv;                     // 0=A, 1=B 2=C ...
} DRIVECMD;                                     // end of struct "drivecmd"

#pragma pack(push, 1)                           // byte packing
typedef struct txfs_ebpb                        // ext. boot parameter block
{                                               // at offset 0x0b in bootsector
   USHORT              SectSize;                // 0B bytes per sector
   BYTE                ClustSize;               // 0D sectors per cluster
   USHORT              FatOffset;               // 0E sectors to 1st FAT
   BYTE                NrOfFats;                // 10 nr of FATS     (FAT only)
   USHORT              RootEntries;             // 11 Max entries \ (FAT only)
   USHORT              Sectors;                 // 13 nr of sectors if <  64K
   BYTE                MediaType;               // 15 mediatype (F8 for HD)
   USHORT              FatSectors;              // 16 sectors/FAT (FAT only)
   USHORT              LogGeoSect;              // 18 sectors/Track
   USHORT              LogGeoHead;              // 1a nr of heads
   ULONG               HiddenSectors;           // 1c sector-offset from MBR/EBR
   ULONG               BigSectors;              // 20 nr of sectors if >= 64K
} TXFS_EBPB;                                    // last byte is at offset 0x23

typedef struct drivebpb
{
   TXFS_EBPB           ebpb;                    // extended BPB
   BYTE                reserved[6];
   USHORT              cyls;
   BYTE                type;
   USHORT              attributes;              // device attributes
   BYTE                fill[6];                 // documented for IOCtl
} DRIVEBPB;                                     // end of struct "drivebpb"

struct CDInfo {
    USHORT usCount;
    USHORT usFirst;
};

#pragma pack(pop)

/*****************************************************************************/
// Get number of cdrom readers
/*****************************************************************************/
BOOL GetCDInfo( CDInfo * pCDInfo )
{
    HFILE hFileCD;
    ULONG ulAction;

    if( NO_ERROR == DosOpen( (PCSZ)"\\DEV\\CD-ROM2$",
                            &hFileCD, &ulAction, 0, FILE_NORMAL,
                            OPEN_ACTION_OPEN_IF_EXISTS,
                            OPEN_SHARE_DENYNONE | OPEN_ACCESS_READONLY, NULL )) {
        ULONG  ulDataSize = sizeof(CDInfo);
        APIRET rc = DosDevIOCtl( hFileCD, 0x82, 0x60, NULL, 0,
                                 NULL, (PVOID)pCDInfo, ulDataSize, &ulDataSize);
        DosClose( hFileCD);
        if(rc == NO_ERROR)
            return TRUE;
    }
    // failed
    pCDInfo->usFirst = 0;
    pCDInfo->usCount = 0;
    return FALSE;
}

/*****************************************************************************/
// Determine if unit is a cdrom or not
/*****************************************************************************/
BOOL DriveIsCDROM(UINT uiDrive, CDInfo *pCDInfo)
{
    return (uiDrive >= pCDInfo->usFirst)
            && (uiDrive < (pCDInfo->usFirst + pCDInfo->usCount));
}

/*****************************************************************************/
// Determine attached fstype, e.g. HPFS for specified drive
/*****************************************************************************/
BOOL TxFsType                                   // RET   FS type resolved
(
   char               *drive,                   // IN    Drive specification
   char               *fstype,                  // OUT   Attached FS type
   char               *details                  // OUT   details (UNC) or NULL
)
{
   BOOL                rc = FALSE;
   FSQBUFFER2         *fsinfo;                     // Attached FS info
   ULONG               fsdlen = 2048;              // Fs info data length

   strcpy(fstype, "none");
   if (details)
   {
      strcpy(details, "");
   }
   if ((fsinfo = (FSQBUFFER2*)calloc(1, fsdlen)) != NULL)
   {
      if (DosQFSAttach((PCSZ)drive, 0, 1, fsinfo, &fsdlen) == NO_ERROR)
      {
         strcpy(fstype, (char*) fsinfo->szName + fsinfo->cbName +1);
         if (details && (fsinfo->cbFSAData != 0))
         {
            strcpy( details, (char*) fsinfo->szName + fsinfo->cbName +
                                              fsinfo->cbFSDName +2);
         }
         rc = TRUE;
      }
      free(fsinfo);
   }
   return (rc);
}                                               // end 'TxFsType'
/*---------------------------------------------------------------------------*/


/*****************************************************************************/
// Determine if a driveletter represents a removable medium/device
/*****************************************************************************/
BOOL TxFsIsRemovable                            // RET   drive is removable
(
   char               *drive                    // IN    Driveletter to test
)
{
   BOOL                rc = FALSE;
   DRIVECMD            IOCtl;
   DRIVEBPB            RemAt;
   ULONG               DataLen;
   ULONG               ParmLen;
   BYTE                NoRem;

   DosError( FERR_DISABLEHARDERR);              // avoid 'not ready' popups

   ParmLen   = sizeof(IOCtl);
   IOCtl.cmd = TXFSDC_BLOCKR;
   IOCtl.drv = toupper(drive[0]) - 'A';
   DataLen   = sizeof(NoRem);

   if (DosDevIOCtl((HFILE) -1, IOCTL_DISK,
                               DSK_BLOCKREMOVABLE,
                               &IOCtl, ParmLen, &ParmLen,
                               &NoRem, DataLen, &DataLen) == NO_ERROR)
   {
      if (NoRem)                                // non-removable sofar, check
      {                                         // BPB as well (USB devices)
         ParmLen   = sizeof(IOCtl);
         IOCtl.cmd = TXFSDC_GETBPB;
         IOCtl.drv = toupper(drive[0]) - 'A';
         DataLen   = sizeof(RemAt);

         if (DosDevIOCtl((HFILE) -1, IOCTL_DISK,
                                     DSK_GETDEVICEPARAMS,
                                     &IOCtl, ParmLen, &ParmLen,
                                     &RemAt, DataLen, &DataLen) == NO_ERROR)

         {
            if (RemAt.attributes & TXFSBPB_REMOVABLE)
            {
               rc = TRUE;                       // removable, probably USB
            }
         }
      }
      else
      {
         rc = TRUE;                             // removable block device
      }
   }
   DosError( FERR_ENABLEHARDERR);               // enable criterror handler
   return (rc);
}                                               // end 'TxFsIsRemovable'
/*---------------------------------------------------------------------------*/

static oslFileError get_drive_type(const char* path, oslVolumeInfo* pInfo)
{
    char        Drive_Letter = toupper( *path);
    char        fstype[ 64];

    pInfo->uValidFields |= osl_VolumeInfo_Mask_Attributes;

    // check for floppy A/B
    BYTE    nFloppies;
    APIRET  rc;
    rc = DosDevConfig( (void*) &nFloppies, DEVINFO_FLOPPY );
    if ((Drive_Letter - 'A') < nFloppies) {
        pInfo->uAttributes |= osl_Volume_Attribute_Removeable;
        pInfo->uAttributes |= osl_Volume_Attribute_FloppyDisk;
        return osl_File_E_None;
    }

    // query system for CD drives
    CDInfo cdInfo;
    GetCDInfo(&cdInfo);

    // query if drive is a CDROM
    if (DriveIsCDROM( Drive_Letter - 'A', &cdInfo))
        pInfo->uAttributes |= osl_Volume_Attribute_CompactDisc | osl_Volume_Attribute_Removeable;

    if (TxFsIsRemovable( (char*)path))
        pInfo->uAttributes |= osl_Volume_Attribute_Removeable;

    if (TxFsType( (char*)path, fstype, NULL) == FALSE) {
        // query failed, assume fixed disk
        pInfo->uAttributes |= osl_Volume_Attribute_FixedDisk;
        return osl_File_E_None;
    }

    //- Note, connected Win-NT drives use the REAL FS-name like NTFS!
    if ((strncasecmp( fstype, "LAN", 3) == 0)           //- OS/2 LAN drives
        || (strncasecmp( fstype, "NDFS", 4) == 0)   //- NetDrive
        || (strncasecmp( fstype, "REMOTE", 5) == 0)  )  //- NT disconnected
        pInfo->uAttributes |= osl_Volume_Attribute_Remote;
    else if (strncasecmp( fstype, "RAMFS", 5) == 0)
        pInfo->uAttributes |= osl_Volume_Attribute_RAMDisk;
    else if ((strncasecmp( fstype, "CD",  2) == 0)      // OS2:CDFS, DOS/WIN:CDROM
        || (strncasecmp( fstype, "UDF", 3) == 0)   )    // OS2:UDF DVD's
        pInfo->uAttributes |= osl_Volume_Attribute_CompactDisc | osl_Volume_Attribute_Removeable;
    else
        pInfo->uAttributes |= osl_Volume_Attribute_FixedDisk;

    return osl_File_E_None;
}

//#############################################
inline bool is_volume_space_info_request(sal_uInt32 field_mask)
{
    return (field_mask &
            (osl_VolumeInfo_Mask_TotalSpace |
             osl_VolumeInfo_Mask_UsedSpace  |
             osl_VolumeInfo_Mask_FreeSpace));
}

//#############################################
static void get_volume_space_information(const char* path, oslVolumeInfo *pInfo)
{
    FSALLOCATE aFSInfoBuf;
    ULONG nDriveNumber = toupper( *path) - 'A' + 1;

    // disable error popups
    DosError(FERR_DISABLEHARDERR);
    APIRET rc = DosQueryFSInfo( nDriveNumber, FSIL_ALLOC,
                                &aFSInfoBuf, sizeof(aFSInfoBuf) );
    // enable error popups
    DosError(FERR_ENABLEHARDERR);
    if (!rc)
    {
        uint64_t aBytesPerCluster( uint64_t(aFSInfoBuf.cbSector) *
                                 uint64_t(aFSInfoBuf.cSectorUnit) );
        pInfo->uFreeSpace = aBytesPerCluster * uint64_t(aFSInfoBuf.cUnitAvail);
        pInfo->uTotalSpace = aBytesPerCluster * uint64_t(aFSInfoBuf.cUnit);
        pInfo->uUsedSpace    = pInfo->uTotalSpace - pInfo->uFreeSpace;
        pInfo->uValidFields |= osl_VolumeInfo_Mask_TotalSpace |
                               osl_VolumeInfo_Mask_UsedSpace |
                               osl_VolumeInfo_Mask_FreeSpace;
    }
}

//#############################################
inline bool is_filesystem_attributes_request(sal_uInt32 field_mask)
{
    return (field_mask &
            (osl_VolumeInfo_Mask_MaxNameLength |
             osl_VolumeInfo_Mask_MaxPathLength |
             osl_VolumeInfo_Mask_FileSystemName |
             osl_VolumeInfo_Mask_FileSystemCaseHandling));
}

//#############################################
inline bool is_drivetype_request(sal_uInt32 field_mask)
{
    return (field_mask & osl_VolumeInfo_Mask_Attributes);
}

typedef struct _FSQBUFFER_
{
    FSQBUFFER2  aBuf;
    UCHAR       sBuf[64];
} FSQBUFFER_;

//#############################################
static oslFileError get_filesystem_attributes(const char* path, sal_uInt32 field_mask, oslVolumeInfo* pInfo)
{
    pInfo->uAttributes = 0;

    oslFileError osl_error = osl_File_E_None;

    // osl_get_drive_type must be called first because
    // this function resets osl_VolumeInfo_Mask_Attributes
    // on failure
    if (is_drivetype_request(field_mask))
        osl_error = get_drive_type(path, pInfo);

    if ((osl_File_E_None == osl_error) && is_filesystem_attributes_request(field_mask))
    {
        FSQBUFFER_  aBuf;
        ULONG       nBufLen;
        APIRET      nRet;

        nBufLen = sizeof( aBuf );
        // disable error popups
        DosError(FERR_DISABLEHARDERR);
        nRet = DosQueryFSAttach( (PCSZ)path, 0, FSAIL_QUERYNAME, (_FSQBUFFER2*) &aBuf, &nBufLen );
        if ( !nRet )
        {
            char *pType = (char*)(aBuf.aBuf.szName + aBuf.aBuf.cbName + 1);
            pInfo->uValidFields   |= osl_VolumeInfo_Mask_MaxNameLength;
            pInfo->uMaxNameLength  = _MAX_FNAME;

            pInfo->uValidFields   |= osl_VolumeInfo_Mask_MaxPathLength;
            pInfo->uMaxPathLength  = _MAX_PATH;

            pInfo->uValidFields   |= osl_VolumeInfo_Mask_FileSystemName;
            rtl_uString_newFromAscii(&pInfo->ustrFileSystemName, pType);

            // case is preserved always except for FAT
            if (strcmp( pType, "FAT" ))
                pInfo->uAttributes |= osl_Volume_Attribute_Case_Is_Preserved;

            pInfo->uValidFields |= osl_VolumeInfo_Mask_Attributes;
        }
        // enable error popups
        DosError(FERR_ENABLEHARDERR);
    }
    return osl_error;
}

oslFileError SAL_CALL osl_getVolumeInformation( rtl_uString* ustrDirectoryURL, oslVolumeInfo* pInfo, sal_uInt32 uFieldMask )
{
    char volume_root[PATH_MAX];
    oslFileError error;

    OSL_ASSERT( ustrDirectoryURL );
    OSL_ASSERT( pInfo );

    /* convert directory url to system path */
    error = FileURLToPath( volume_root, PATH_MAX, ustrDirectoryURL );
    if( error != osl_File_E_None )
        return error;

    if (!pInfo)
        return osl_File_E_INVAL;

    pInfo->uValidFields = 0;

    if ((error = get_filesystem_attributes(volume_root, uFieldMask, pInfo)) != osl_File_E_None)
        return error;

    if (is_volume_space_info_request(uFieldMask))
        get_volume_space_information(volume_root, pInfo);

    if (uFieldMask & osl_VolumeInfo_Mask_DeviceHandle)
    {
        pInfo->uValidFields |= osl_VolumeInfo_Mask_DeviceHandle;
        rtl_uString* uVolumeRoot;
        rtl_uString_newFromAscii( &uVolumeRoot, volume_root);
        osl_getFileURLFromSystemPath( uVolumeRoot, (rtl_uString**)&pInfo->pDeviceHandle);
        rtl_uString_release( uVolumeRoot);
    }

    return osl_File_E_None;
}

/****************************************************************************/
/*  osl_getFileStatus */
/****************************************************************************/
static oslFileError _osl_getDriveInfo(
    oslDirectoryItem Item, oslFileStatus *pStatus, sal_uInt32 uFieldMask)
{
    DirectoryItem_Impl  *pItemImpl = (DirectoryItem_Impl *)Item;
    sal_Unicode         cDrive[3];
    sal_Unicode         cRoot[4];

    if ( !pItemImpl )
        return osl_File_E_INVAL;

    pStatus->uValidFields = 0;

    cDrive[0] = pItemImpl->ustrDrive->buffer[0];
    cDrive[1] = (sal_Unicode)':';
    cDrive[2] = 0;
    cRoot[0] = pItemImpl->ustrDrive->buffer[0];
    cRoot[1] = (sal_Unicode)':';
    cRoot[2] = 0;

    if ( uFieldMask & osl_FileStatus_Mask_FileName )
    {
        if ( pItemImpl->ustrDrive->buffer[0] == '\\' &&
            pItemImpl->ustrDrive->buffer[1] == '\\' )
        {
            LPCWSTR lpFirstBkSlash = wcschr( (const wchar_t*)&pItemImpl->ustrDrive->buffer[2], '\\' );

            if ( lpFirstBkSlash && lpFirstBkSlash[1] )
            {
                LPCWSTR lpLastBkSlash = wcschr( (const wchar_t*)&lpFirstBkSlash[1], '\\' );

                if ( lpLastBkSlash )
                    rtl_uString_newFromStr_WithLength( &pStatus->ustrFileName, (sal_Unicode*)&lpFirstBkSlash[1], lpLastBkSlash - lpFirstBkSlash - 1 );
                else
                    rtl_uString_newFromStr( &pStatus->ustrFileName, (sal_Unicode*)&lpFirstBkSlash[1] );
                pStatus->uValidFields |= osl_FileStatus_Mask_FileName;
            }
        }
        else
        {
            FSINFO  aFSInfoBuf;
            ULONG   ulFSInfoLevel = FSIL_VOLSER;
            ULONG   nDriveNumber;
            char    szFileName[ _MAX_PATH];

            nDriveNumber = toupper(*cDrive) - 'A' + 1;
            memset( &aFSInfoBuf, 0, sizeof(FSINFO) );
            // disable error popups
            DosError(FERR_DISABLEHARDERR);
            APIRET rc = DosQueryFSInfo( nDriveNumber, ulFSInfoLevel, &aFSInfoBuf, sizeof(FSINFO) );
            // enable error popups
            DosError(FERR_ENABLEHARDERR);
            memset( szFileName, 0, sizeof( szFileName));
            *szFileName = toupper(*cDrive);
            strcat( szFileName, ": [");
            if ( !rc || aFSInfoBuf.vol.cch)
                strncat( szFileName, aFSInfoBuf.vol.szVolLabel, aFSInfoBuf.vol.cch);
            strcat( szFileName, "]");
            rtl_uString_newFromAscii( &pStatus->ustrFileName, szFileName );

            pStatus->uValidFields |= osl_FileStatus_Mask_FileName;
        }
    }

    pStatus->eType = osl_File_Type_Volume;
    pStatus->uValidFields |= osl_FileStatus_Mask_Type;

    if ( uFieldMask & osl_FileStatus_Mask_FileURL )
    {
        rtl_uString *ustrSystemPath = NULL;

        rtl_uString_newFromStr( &ustrSystemPath, pItemImpl->ustrDrive->buffer );
        osl_getFileURLFromSystemPath( ustrSystemPath, &pStatus->ustrFileURL );
        rtl_uString_release( ustrSystemPath );
        pStatus->uValidFields |= osl_FileStatus_Mask_FileURL;
    }

    return osl_File_E_None;
}

oslFileError SAL_CALL osl_getFileStatus(
    oslDirectoryItem Item,
    oslFileStatus *pStatus,
    sal_uInt32 uFieldMask )
{
    DirectoryItem_Impl  *pItemImpl = (DirectoryItem_Impl *)Item;
    struct stat file_stat;

    if ( !pItemImpl )
        return osl_File_E_INVAL;

    if ( pItemImpl->uType == DIRECTORYITEM_DRIVE)
        return _osl_getDriveInfo( Item, pStatus, uFieldMask );

    osl::lstat(pItemImpl->ustrFilePath, file_stat);
    if ( uFieldMask & osl_FileStatus_Mask_Validate )
    {
        uFieldMask &= ~ osl_FileStatus_Mask_Validate;
    }

    /* If no fields to retrieve left ignore pStatus */
    if ( !uFieldMask )
        return osl_File_E_None;

    /* Otherwise, this must be a valid pointer */
    if ( !pStatus )
        return osl_File_E_INVAL;

    if ( pStatus->uStructSize != sizeof(oslFileStatus) )
        return osl_File_E_INVAL;

    pStatus->uValidFields = 0;

    /* File time stamps */

    if ( (uFieldMask & osl_FileStatus_Mask_ModifyTime))
    {
        pStatus->aModifyTime.Seconds  = file_stat.st_mtime;
        pStatus->aModifyTime.Nanosec  = 0;
        pStatus->uValidFields |= osl_FileStatus_Mask_ModifyTime;
    }

    if ( (uFieldMask & osl_FileStatus_Mask_AccessTime))
    {
        pStatus->aAccessTime.Seconds  = file_stat.st_atime;
        pStatus->aAccessTime.Nanosec  = 0;
        pStatus->uValidFields |= osl_FileStatus_Mask_AccessTime;
    }

    if ( (uFieldMask & osl_FileStatus_Mask_CreationTime))
    {
        pStatus->aAccessTime.Seconds  = file_stat.st_birthtime;
        pStatus->aAccessTime.Nanosec  = 0;
        pStatus->uValidFields |= osl_FileStatus_Mask_CreationTime;
    }

    /* Most of the fields are already set, regardless of requiered fields */

    osl_systemPathGetFileNameOrLastDirectoryPart(pItemImpl->ustrFilePath, &pStatus->ustrFileName);
    pStatus->uValidFields |= osl_FileStatus_Mask_FileName;

    if (S_ISLNK(file_stat.st_mode))
       pStatus->eType = osl_File_Type_Link;
    else if (S_ISDIR(file_stat.st_mode))
       pStatus->eType = osl_File_Type_Directory;
    else if (S_ISREG(file_stat.st_mode))
       pStatus->eType = osl_File_Type_Regular;
    else if (S_ISFIFO(file_stat.st_mode))
       pStatus->eType = osl_File_Type_Fifo;
    else if (S_ISSOCK(file_stat.st_mode))
       pStatus->eType = osl_File_Type_Socket;
    else if (S_ISCHR(file_stat.st_mode) || S_ISBLK(file_stat.st_mode))
       pStatus->eType = osl_File_Type_Special;
    else
       pStatus->eType = osl_File_Type_Unknown;

    pStatus->uValidFields |= osl_FileStatus_Mask_Type;

    pStatus->uAttributes = pItemImpl->d_attr;
    pStatus->uValidFields |= osl_FileStatus_Mask_Attributes;

    pStatus->uFileSize = file_stat.st_size;
    pStatus->uValidFields |= osl_FileStatus_Mask_FileSize;

    if ( uFieldMask & osl_FileStatus_Mask_LinkTargetURL )
    {
        rtl_uString *ustrFullPath = NULL;

        rtl_uString_newFromStr( &ustrFullPath, rtl_uString_getStr(pItemImpl->ustrFilePath) );
        osl_getFileURLFromSystemPath( ustrFullPath, &pStatus->ustrLinkTargetURL );
        rtl_uString_release( ustrFullPath );

        pStatus->uValidFields |= osl_FileStatus_Mask_LinkTargetURL;
    }

    if ( uFieldMask & osl_FileStatus_Mask_FileURL )
    {
        rtl_uString *ustrFullPath = NULL;

        rtl_uString_newFromStr( &ustrFullPath, rtl_uString_getStr(pItemImpl->ustrFilePath) );
        osl_getFileURLFromSystemPath( ustrFullPath, &pStatus->ustrFileURL );
        rtl_uString_release( ustrFullPath );
        pStatus->uValidFields |= osl_FileStatus_Mask_FileURL;
    }

    return osl_File_E_None;
}

/****************************************************************************/
/*  osl_createDirectory */
/****************************************************************************/

oslFileError osl_createDirectory( rtl_uString* ustrDirectoryURL )
{
    char path[PATH_MAX];
    oslFileError eRet;
    APIRET rc;

    OSL_ASSERT( ustrDirectoryURL );

    /* convert directory url to system path */
    eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL );
    if( eRet != osl_File_E_None )
        return eRet;

    rc = DosCreateDir( (PCSZ)path, NULL);
    if (rc == ERROR_ACCESS_DENIED)
       rc=ERROR_FILE_EXISTS;

    if (!rc)
        eRet = osl_File_E_None;
    else
        eRet = MapError( rc);

    return eRet;
}

/****************************************************************************/
/*  osl_removeDirectory */
/****************************************************************************/

oslFileError osl_removeDirectory( rtl_uString* ustrDirectoryURL )
{
    char path[PATH_MAX];
    oslFileError eRet;
    APIRET rc;

    OSL_ASSERT( ustrDirectoryURL );

    /* convert directory url to system path */
    eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL );
    if( eRet != osl_File_E_None )
        return eRet;

    rc = DosDeleteDir( (PCSZ)path);
    if (!rc)
        eRet = osl_File_E_None;
    else
        eRet = MapError( rc);

    return eRet;
}

//#############################################
int path_make_parent(sal_Unicode* path)
{
    int i = rtl_ustr_lastIndexOfChar(path, '/');

    if (i > 0)
    {
        *(path + i) = 0;
        return i;
    }
    else
        return 0;
}

//#############################################
int create_dir_with_callback(
    sal_Unicode* directory_path,
    oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
    void* pData)
{
    int mode = S_IRWXU | S_IRWXG | S_IRWXO;

    if (osl::mkdir(directory_path, mode) == 0)
    {
        if (aDirectoryCreationCallbackFunc)
        {
            rtl::OUString url;
            osl::FileBase::getFileURLFromSystemPath(directory_path, url);
            aDirectoryCreationCallbackFunc(pData, url.pData);
        }
        return 0;
    }
    return errno;
}

//#############################################
oslFileError create_dir_recursively_(
    sal_Unicode* dir_path,
    oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
    void* pData)
{
    OSL_PRECOND((rtl_ustr_getLength(dir_path) > 0) && ((dir_path + (rtl_ustr_getLength(dir_path) - 1)) != (dir_path + rtl_ustr_lastIndexOfChar(dir_path, '/'))), \
    "Path must not end with a slash");

    int native_err = create_dir_with_callback(
        dir_path, aDirectoryCreationCallbackFunc, pData);

    if (native_err == 0)
        return osl_File_E_None;

    if (native_err != ENOENT)
        return oslTranslateFileError(OSL_FET_ERROR, native_err);

    // we step back until '/a_dir' at maximum because
    // we should get an error unequal ENOENT when
    // we try to create 'a_dir' at '/' and would so
    // return before
    int pos = path_make_parent(dir_path);

    oslFileError osl_error = create_dir_recursively_(
        dir_path, aDirectoryCreationCallbackFunc, pData);

    if (osl_File_E_None != osl_error)
        return osl_error;

       dir_path[pos] = '/';

    return create_dir_recursively_(dir_path, aDirectoryCreationCallbackFunc, pData);
}

//#######################################
oslFileError SAL_CALL osl_createDirectoryPath(
    rtl_uString* aDirectoryUrl,
    oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
    void* pData)
{
    if (aDirectoryUrl == NULL)
        return osl_File_E_INVAL;

    rtl::OUString sys_path;
    oslFileError osl_error = osl_getSystemPathFromFileURL_Ex(
        aDirectoryUrl, &sys_path.pData, sal_False);

    if (osl_error != osl_File_E_None)
        return osl_error;

    osl::systemPathRemoveSeparator(sys_path);

    // const_cast because sys_path is a local copy which we want to modify inplace instead of
    // coyp it into another buffer on the heap again
    return create_dir_recursively_(sys_path.pData->buffer, aDirectoryCreationCallbackFunc, pData);
}

/****************************************************************************/
/*  osl_getCanonicalName */
/****************************************************************************/

oslFileError osl_getCanonicalName( rtl_uString* ustrFileURL, rtl_uString** pustrValidURL )
{
    OSL_ENSURE(sal_False, "osl_getCanonicalName not implemented");

    rtl_uString_newFromString(pustrValidURL, ustrFileURL);
    return osl_File_E_None;
}


/****************************************************************************/
/*  osl_setFileAttributes */
/****************************************************************************/

oslFileError osl_setFileAttributes( rtl_uString* ustrFileURL, sal_uInt64 uAttributes )
{
    char         path[PATH_MAX];
    oslFileError eRet;
    FILESTATUS3  fsts3ConfigInfo;
    ULONG        ulBufSize     = sizeof(FILESTATUS3);
    APIRET       rc            = NO_ERROR;

    OSL_ASSERT( ustrFileURL );

    /* convert file url to system path */
    eRet = FileURLToPath( path, PATH_MAX, ustrFileURL );
    if( eRet != osl_File_E_None )
        return eRet;

    /* query current attributes */
    rc = DosQueryPathInfo( (PCSZ)path, FIL_STANDARD, &fsts3ConfigInfo, ulBufSize);
    if (rc != NO_ERROR)
        return MapError( rc);

    /* set/reset readonly/hidden (see w32\file.cxx) */
    fsts3ConfigInfo.attrFile &= ~(FILE_READONLY | FILE_HIDDEN);
    if ( uAttributes & osl_File_Attribute_ReadOnly )
        fsts3ConfigInfo.attrFile |= FILE_READONLY;
    if ( uAttributes & osl_File_Attribute_Hidden )
        fsts3ConfigInfo.attrFile |= FILE_HIDDEN;

    /* write new attributes */
    rc = DosSetPathInfo( (PCSZ)path, FIL_STANDARD, &fsts3ConfigInfo, ulBufSize, 0);
    if (rc != NO_ERROR)
        return MapError( rc);

    /* everything ok */
    return osl_File_E_None;
}

/****************************************************************************/
/*  osl_setFileTime */
/****************************************************************************/

oslFileError osl_setFileTime( rtl_uString* ustrFileURL, const TimeValue* pCreationTime,
                              const TimeValue* pLastAccessTime, const TimeValue* pLastWriteTime )
{
    char path[PATH_MAX];
    oslFileError eRet;

    OSL_ASSERT( ustrFileURL );

    /* convert file url to system path */
    eRet = FileURLToPath( path, PATH_MAX, ustrFileURL );
    if( eRet != osl_File_E_None )
        return eRet;

    return osl_psz_setFileTime( path, pCreationTime, pLastAccessTime, pLastWriteTime );
}

/******************************************************************************
 *
 *                  Exported Module Functions
 *             (independent of C or Unicode Strings)
 *
 *****************************************************************************/


/*******************************************
    osl_readFile
********************************************/

oslFileError osl_readFile(oslFileHandle Handle, void* pBuffer, sal_uInt64 uBytesRequested, sal_uInt64* pBytesRead)
{
    ssize_t            nBytes      = 0;
    oslFileHandleImpl* pHandleImpl = (oslFileHandleImpl*)Handle;

    if ((0 == pHandleImpl) || (pHandleImpl->fd < 0) || (0 == pBuffer) || (0 == pBytesRead))
        return osl_File_E_INVAL;

    nBytes = read(pHandleImpl->fd, pBuffer, uBytesRequested);

    if (-1 == nBytes)
        return oslTranslateFileError(OSL_FET_ERROR, errno);

    *pBytesRead = nBytes;
    return osl_File_E_None;
}

/*******************************************
    osl_writeFile
********************************************/

oslFileError osl_writeFile(oslFileHandle Handle, const void* pBuffer, sal_uInt64 uBytesToWrite, sal_uInt64* pBytesWritten)
{
    ssize_t            nBytes      = 0;
    oslFileHandleImpl* pHandleImpl = (oslFileHandleImpl*)Handle;

    OSL_ASSERT(pHandleImpl);
    OSL_ASSERT(pBuffer);
    OSL_ASSERT(pBytesWritten);

    if ((0 == pHandleImpl) || (0 == pBuffer) || (0 == pBytesWritten))
        return osl_File_E_INVAL;

    OSL_ASSERT(pHandleImpl->fd >= 0);

    if (pHandleImpl->fd < 0)
        return osl_File_E_INVAL;

    nBytes = write(pHandleImpl->fd, pBuffer, uBytesToWrite);

    if (-1 == nBytes)
        return oslTranslateFileError(OSL_FET_ERROR, errno);

    *pBytesWritten = nBytes;
    return osl_File_E_None;
}

/*******************************************
    osl_writeFile
********************************************/

oslFileError osl_setFilePos( oslFileHandle Handle, sal_uInt32 uHow, sal_Int64 uPos )
{
    oslFileHandleImpl* pHandleImpl=0;
    int nRet=0;
    off_t nOffset=0;

    pHandleImpl = (oslFileHandleImpl*) Handle;
    if ( pHandleImpl == 0 )
    {
        return osl_File_E_INVAL;
    }

    if ( pHandleImpl->fd < 0 )
    {
        return osl_File_E_INVAL;
    }

    /* FIXME mfe: setFilePos: Do we have any runtime function to determine LONG_MAX? */
    if ( uPos > LONG_MAX )
    {
        return osl_File_E_OVERFLOW;
    }

    nOffset=(off_t)uPos;

    switch(uHow)
    {
        case osl_Pos_Absolut:
            nOffset = lseek(pHandleImpl->fd,nOffset,SEEK_SET);
            break;

        case osl_Pos_Current:
            nOffset = lseek(pHandleImpl->fd,nOffset,SEEK_CUR);
            break;

        case osl_Pos_End:
            nOffset = lseek(pHandleImpl->fd,nOffset,SEEK_END);
            break;

        default:
            return osl_File_E_INVAL;
    }

    if ( nOffset < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    return osl_File_E_None;
}

/************************************************
 * osl_getFilePos
 ***********************************************/

oslFileError osl_getFilePos( oslFileHandle Handle, sal_uInt64* pPos )
{
    oslFileHandleImpl* pHandleImpl=0;
    off_t nOffset=0;
    int nRet=0;

    pHandleImpl = (oslFileHandleImpl*) Handle;
    if ( pHandleImpl == 0 || pPos == 0)
    {
        return osl_File_E_INVAL;
    }

    if ( pHandleImpl->fd < 0 )
    {
        return osl_File_E_INVAL;
    }

    nOffset = lseek(pHandleImpl->fd,0,SEEK_CUR);

    if (nOffset < 0)
    {
        nRet  =errno;

        /* *pPos =0; */

        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    *pPos=nOffset;

    return osl_File_E_None;
}

/****************************************************************************
 *  osl_getFileSize
 ****************************************************************************/

oslFileError osl_getFileSize( oslFileHandle Handle, sal_uInt64* pSize )
{
    oslFileHandleImpl* pHandleImpl=(oslFileHandleImpl*) Handle;
    if (pHandleImpl == 0)
        return osl_File_E_INVAL;

    struct stat file_stat;
    if (fstat(pHandleImpl->fd, &file_stat) == -1)
        return oslTranslateFileError(OSL_FET_ERROR, errno);

    *pSize = file_stat.st_size;
    return osl_File_E_None;
}

/************************************************
 * osl_setFileSize
 ***********************************************/

oslFileError osl_setFileSize( oslFileHandle Handle, sal_uInt64 uSize )
{
    oslFileHandleImpl* pHandleImpl=0;
    off_t nOffset=0;

    pHandleImpl = (oslFileHandleImpl*) Handle;
    if ( pHandleImpl == 0 )
    {
        return osl_File_E_INVAL;
    }

    if ( pHandleImpl->fd < 0 )
    {
        return osl_File_E_INVAL;
    }

    /* FIXME: mfe: setFileSize: Do we have any runtime function to determine LONG_MAX? */
    if ( uSize > LONG_MAX )
    {
        return osl_File_E_OVERFLOW;
    }

    nOffset = (off_t)uSize;
    if (ftruncate (pHandleImpl->fd, nOffset) < 0)
    {
        /* Failure. Try fallback algorithm */
        oslFileError result;
        struct stat  aStat;
        off_t        nCurPos;

        /* Save original result */
        result = oslTranslateFileError (OSL_FET_ERROR, errno);
        PERROR("ftruncate", "Try osl_setFileSize [fallback]\n");

        /* Check against current size. Fail upon 'shrink' */
        if (fstat (pHandleImpl->fd, &aStat) < 0)
        {
            PERROR("ftruncate: fstat", "Out osl_setFileSize [error]\n");
            return (result);
        }
        if ((0 <= nOffset) && (nOffset <= aStat.st_size))
        {
            /* Failure upon 'shrink'. Return original result */
            return (result);
        }

        /* Save current position */
        nCurPos = (off_t)lseek (pHandleImpl->fd, (off_t)0, SEEK_CUR);
        if (nCurPos == (off_t)(-1))
        {
            PERROR("ftruncate: lseek", "Out osl_setFileSize [error]\n");
            return (result);
        }

        /* Try 'expand' via 'lseek()' and 'write()' */
        if (lseek (pHandleImpl->fd, (off_t)(nOffset - 1), SEEK_SET) < 0)
        {
            PERROR("ftruncate: lseek", "Out osl_setFileSize [error]\n");
            return (result);
        }
        if (write (pHandleImpl->fd, (char*)"", (size_t)1) < 0)
        {
            /* Failure. Restore saved position */
            PERROR("ftruncate: write", "Out osl_setFileSize [error]\n");
            if (lseek (pHandleImpl->fd, (off_t)nCurPos, SEEK_SET) < 0)
            {
#ifdef DEBUG_OSL_FILE
                perror("ftruncate: lseek");
#endif /* DEBUG_OSL_FILE */
            }
            return (result);
        }

        /* Success. Restore saved position */
        if (lseek (pHandleImpl->fd, (off_t)nCurPos, SEEK_SET) < 0)
        {
            PERROR("ftruncate: lseek", "Out osl_setFileSize [error]");
            return (result);
        }
    }

    return (osl_File_E_None);
}

/*###############################################*/
oslFileError SAL_CALL osl_syncFile(oslFileHandle Handle)
{
    oslFileHandleImpl* handle_impl = (oslFileHandleImpl*)Handle;

    if (handle_impl == 0)
        return osl_File_E_INVAL;

    if (fsync(handle_impl->fd) == -1)
        return oslTranslateFileError(OSL_FET_ERROR, errno);

    return osl_File_E_None;
}

/******************************************************************************
 *
 *                  C-String Versions of Exported Module Functions
 *
 *****************************************************************************/

#ifdef HAVE_STATFS_H

#if defined(FREEBSD) || defined(NETBSD) || defined(MACOSX)
#   define __OSL_STATFS_STRUCT                  struct statfs
#   define __OSL_STATFS(dir, sfs)               statfs((dir), (sfs))
#   define __OSL_STATFS_BLKSIZ(a)               ((sal_uInt64)((a).f_bsize))
#   define __OSL_STATFS_TYPENAME(a)             ((a).f_fstypename)
#   define __OSL_STATFS_ISREMOTE(a)             (((a).f_type & MNT_LOCAL) == 0)

/* always return true if queried for the properties of
   the file system. If you think this is wrong under any
   of the target platforms fix it!!!! */
#   define __OSL_STATFS_IS_CASE_SENSITIVE_FS(a)  (1)
#   define __OSL_STATFS_IS_CASE_PRESERVING_FS(a) (1)
#endif /* FREEBSD || NETBSD */

#if defined(LINUX)
#   define __OSL_NFS_SUPER_MAGIC                 0x6969
#   define __OSL_SMB_SUPER_MAGIC                 0x517B
#   define __OSL_MSDOS_SUPER_MAGIC               0x4d44
#   define __OSL_NTFS_SUPER_MAGIC                0x5346544e
#   define __OSL_STATFS_STRUCT                   struct statfs
#   define __OSL_STATFS(dir, sfs)                statfs((dir), (sfs))
#   define __OSL_STATFS_BLKSIZ(a)                ((sal_uInt64)((a).f_bsize))
#   define __OSL_STATFS_IS_NFS(a)                (__OSL_NFS_SUPER_MAGIC == (a).f_type)
#   define __OSL_STATFS_IS_SMB(a)                (__OSL_SMB_SUPER_MAGIC == (a).f_type)
#   define __OSL_STATFS_ISREMOTE(a)              (__OSL_STATFS_IS_NFS((a)) || __OSL_STATFS_IS_SMB((a)))
#   define __OSL_STATFS_IS_CASE_SENSITIVE_FS(a)  ((__OSL_MSDOS_SUPER_MAGIC != (a).f_type) && (__OSL_NTFS_SUPER_MAGIC != (a).f_type))
#   define __OSL_STATFS_IS_CASE_PRESERVING_FS(a) ((__OSL_MSDOS_SUPER_MAGIC != (a).f_type))
#endif /* LINUX */

#if defined(SOLARIS)
#   define __OSL_STATFS_STRUCT                   struct statvfs
#   define __OSL_STATFS(dir, sfs)                statvfs((dir), (sfs))
#   define __OSL_STATFS_BLKSIZ(a)                ((sal_uInt64)((a).f_frsize))
#   define __OSL_STATFS_TYPENAME(a)              ((a).f_basetype)
#   define __OSL_STATFS_ISREMOTE(a)              (rtl_str_compare((a).f_basetype, "nfs") == 0)

/* always return true if queried for the properties of
   the file system. If you think this is wrong under any
   of the target platforms fix it!!!! */
#   define __OSL_STATFS_IS_CASE_SENSITIVE_FS(a)  (1)
#   define __OSL_STATFS_IS_CASE_PRESERVING_FS(a) (1)
#endif /* SOLARIS */

#   define __OSL_STATFS_INIT(a)         (memset(&(a), 0, sizeof(__OSL_STATFS_STRUCT)))

#else /* no statfs available */

#   define __OSL_STATFS_STRUCT                   struct dummy {int i;}
#   define __OSL_STATFS_INIT(a)                  ((void)0)
#   define __OSL_STATFS(dir, sfs)                (1)
#   define __OSL_STATFS_ISREMOTE(sfs)            (0)
#   define __OSL_STATFS_IS_CASE_SENSITIVE_FS(a)  (1)
#   define __OSL_STATFS_IS_CASE_PRESERVING_FS(a) (1)
#endif /* HAVE_STATFS_H */


static oslFileError osl_psz_getVolumeInformation (
    const sal_Char* pszDirectory, oslVolumeInfo* pInfo, sal_uInt32 uFieldMask)
{
    __OSL_STATFS_STRUCT sfs;

    if (!pInfo)
        return osl_File_E_INVAL;

    __OSL_STATFS_INIT(sfs);

    pInfo->uValidFields = 0;
    pInfo->uAttributes  = 0;

    if ((__OSL_STATFS(pszDirectory, &sfs)) < 0)
    {
        oslFileError result = oslTranslateFileError(OSL_FET_ERROR, errno);
        return (result);
    }

    /* FIXME: how to detect the kind of storage (fixed, cdrom, ...) */
    if (uFieldMask & osl_VolumeInfo_Mask_Attributes)
    {
        if (__OSL_STATFS_ISREMOTE(sfs))
            pInfo->uAttributes  |= osl_Volume_Attribute_Remote;

        pInfo->uValidFields |= osl_VolumeInfo_Mask_Attributes;
    }

    if (uFieldMask & osl_VolumeInfo_Mask_FileSystemCaseHandling)
    {
        if (__OSL_STATFS_IS_CASE_SENSITIVE_FS(sfs))
            pInfo->uAttributes |= osl_Volume_Attribute_Case_Sensitive;

        if (__OSL_STATFS_IS_CASE_PRESERVING_FS(sfs))
            pInfo->uAttributes |= osl_Volume_Attribute_Case_Is_Preserved;

        pInfo->uValidFields |= osl_VolumeInfo_Mask_Attributes;
    }

    pInfo->uTotalSpace = 0;
    pInfo->uFreeSpace  = 0;
    pInfo->uUsedSpace  = 0;

#if defined(__OSL_STATFS_BLKSIZ)

    if ((uFieldMask & osl_VolumeInfo_Mask_TotalSpace) ||
        (uFieldMask & osl_VolumeInfo_Mask_UsedSpace))
    {
        pInfo->uTotalSpace   = __OSL_STATFS_BLKSIZ(sfs);
        pInfo->uTotalSpace  *= (sal_uInt64)(sfs.f_blocks);
        pInfo->uValidFields |= osl_VolumeInfo_Mask_TotalSpace;
    }

    if ((uFieldMask & osl_VolumeInfo_Mask_FreeSpace) ||
        (uFieldMask & osl_VolumeInfo_Mask_UsedSpace))
    {
        pInfo->uFreeSpace = __OSL_STATFS_BLKSIZ(sfs);

        if (getuid() == 0)
            pInfo->uFreeSpace *= (sal_uInt64)(sfs.f_bfree);
        else
            pInfo->uFreeSpace *= (sal_uInt64)(sfs.f_bavail);

        pInfo->uValidFields |= osl_VolumeInfo_Mask_FreeSpace;
    }

#endif  /* __OSL_STATFS_BLKSIZ */

    if ((pInfo->uValidFields & osl_VolumeInfo_Mask_TotalSpace) &&
        (pInfo->uValidFields & osl_VolumeInfo_Mask_FreeSpace ))
    {
        pInfo->uUsedSpace    = pInfo->uTotalSpace - pInfo->uFreeSpace;
        pInfo->uValidFields |= osl_VolumeInfo_Mask_UsedSpace;
    }

    pInfo->uMaxNameLength = 0;
    if (uFieldMask & osl_VolumeInfo_Mask_MaxNameLength)
    {
        long nLen = pathconf(pszDirectory, _PC_NAME_MAX);
        if (nLen > 0)
        {
            pInfo->uMaxNameLength = (sal_uInt32)nLen;
            pInfo->uValidFields |= osl_VolumeInfo_Mask_MaxNameLength;
        }
    }

    pInfo->uMaxPathLength = 0;
    if (uFieldMask & osl_VolumeInfo_Mask_MaxPathLength)
    {
        long nLen = pathconf (pszDirectory, _PC_PATH_MAX);
        if (nLen > 0)
        {
            pInfo->uMaxPathLength  = (sal_uInt32)nLen;
            pInfo->uValidFields   |= osl_VolumeInfo_Mask_MaxPathLength;
        }
    }

#if defined(__OSL_STATFS_TYPENAME)

    if (uFieldMask & osl_VolumeInfo_Mask_FileSystemName)
    {
        rtl_string2UString(
            &(pInfo->ustrFileSystemName),
            __OSL_STATFS_TYPENAME(sfs),
            rtl_str_getLength(__OSL_STATFS_TYPENAME(sfs)),
            osl_getThreadTextEncoding(),
            OUSTRING_TO_OSTRING_CVTFLAGS);
        OSL_ASSERT(pInfo->ustrFileSystemName != 0);

        pInfo->uValidFields |= osl_VolumeInfo_Mask_FileSystemName;
    }

#endif /* __OSL_STATFS_TYPENAME */

    if (uFieldMask & osl_VolumeInfo_Mask_DeviceHandle)
    {
        /* FIXME: check also entries in mntent for the device
           and fill it with correct values */

        *pInfo->pDeviceHandle = osl_isFloppyDrive(pszDirectory);

        if (*pInfo->pDeviceHandle)
        {
            pInfo->uValidFields |= osl_VolumeInfo_Mask_DeviceHandle;
            pInfo->uAttributes  |= osl_Volume_Attribute_Removeable;
            pInfo->uValidFields |= osl_VolumeInfo_Mask_Attributes;
        }
    }
    return osl_File_E_None;
}

/******************************************
 * osl_psz_setFileTime
 *****************************************/

static oslFileError osl_psz_setFileTime( const sal_Char* pszFilePath,
                                  const TimeValue* /*pCreationTime*/,
                                  const TimeValue* pLastAccessTime,
                                  const TimeValue* pLastWriteTime )
{
    int nRet=0;
    struct utimbuf aTimeBuffer;
    struct stat aFileStat;
#ifdef DEBUG_OSL_FILE
    struct tm* pTM=0;
#endif

    nRet = lstat(pszFilePath,&aFileStat);

    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"File Times are (in localtime):\n");
    pTM=localtime(&aFileStat.st_ctime);
    fprintf(stderr,"CreationTime is '%s'\n",asctime(pTM));
    pTM=localtime(&aFileStat.st_atime);
    fprintf(stderr,"AccessTime   is '%s'\n",asctime(pTM));
    pTM=localtime(&aFileStat.st_mtime);
    fprintf(stderr,"Modification is '%s'\n",asctime(pTM));

    fprintf(stderr,"File Times are (in UTC):\n");
    fprintf(stderr,"CreationTime is '%s'\n",ctime(&aFileStat.st_ctime));
    fprintf(stderr,"AccessTime   is '%s'\n",ctime(&aTimeBuffer.actime));
    fprintf(stderr,"Modification is '%s'\n",ctime(&aTimeBuffer.modtime));
#endif

    if ( pLastAccessTime != 0 )
    {
        aTimeBuffer.actime=pLastAccessTime->Seconds;
    }
    else
    {
        aTimeBuffer.actime=aFileStat.st_atime;
    }

    if ( pLastWriteTime != 0 )
    {
        aTimeBuffer.modtime=pLastWriteTime->Seconds;
    }
    else
    {
        aTimeBuffer.modtime=aFileStat.st_mtime;
    }

    /* mfe: Creation time not used here! */

#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"File Times are (in localtime):\n");
    pTM=localtime(&aFileStat.st_ctime);
    fprintf(stderr,"CreationTime now '%s'\n",asctime(pTM));
    pTM=localtime(&aTimeBuffer.actime);
    fprintf(stderr,"AccessTime   now '%s'\n",asctime(pTM));
    pTM=localtime(&aTimeBuffer.modtime);
    fprintf(stderr,"Modification now '%s'\n",asctime(pTM));

    fprintf(stderr,"File Times are (in UTC):\n");
    fprintf(stderr,"CreationTime now '%s'\n",ctime(&aFileStat.st_ctime));
    fprintf(stderr,"AccessTime   now '%s'\n",ctime(&aTimeBuffer.actime));
    fprintf(stderr,"Modification now '%s'\n",ctime(&aTimeBuffer.modtime));
#endif

    nRet=utime(pszFilePath,&aTimeBuffer);
    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    return osl_File_E_None;
}


/*****************************************
 * osl_psz_removeFile
 ****************************************/
#if 0
static oslFileError osl_psz_removeFile( const sal_Char* pszPath )
{
    int nRet=0;
    struct stat aStat;

    nRet = stat(pszPath,&aStat);
    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    if ( S_ISDIR(aStat.st_mode) )
    {
        return osl_File_E_ISDIR;
    }

    nRet = unlink(pszPath);
    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    return osl_File_E_None;
}
#endif

/*****************************************
 * osl_psz_createDirectory
 ****************************************/
#if 0
static oslFileError osl_psz_createDirectory( const sal_Char* pszPath )
{
    int nRet=0;
    int mode = S_IRWXU | S_IRWXG | S_IRWXO;

    nRet = mkdir(pszPath,mode);

    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    return osl_File_E_None;
}
#endif
/*****************************************
 * osl_psz_removeDirectory
 ****************************************/
#if 0
static oslFileError osl_psz_removeDirectory( const sal_Char* pszPath )
{
    int nRet=0;

    nRet = rmdir(pszPath);

    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    return osl_File_E_None;
}
#endif
/*****************************************
 * oslDoMoveFile
 ****************************************/
#if 0
static oslFileError oslDoMoveFile( const sal_Char* pszPath, const sal_Char* pszDestPath)
{
    oslFileError tErr=osl_File_E_invalidError;

    tErr = osl_psz_moveFile(pszPath,pszDestPath);
    if ( tErr == osl_File_E_None )
    {
        return tErr;
    }

    if ( tErr != osl_File_E_XDEV )
    {
        return tErr;
    }

    tErr=osl_psz_copyFile(pszPath,pszDestPath);

    if ( tErr != osl_File_E_None )
    {
        oslFileError tErrRemove;
        tErrRemove=osl_psz_removeFile(pszDestPath);
        return tErr;
    }

    tErr=osl_psz_removeFile(pszPath);

    return tErr;
}
#endif
/*****************************************
 * osl_psz_moveFile
 ****************************************/
#if 0
static oslFileError osl_psz_moveFile(const sal_Char* pszPath, const sal_Char* pszDestPath)
{

    int nRet = 0;

    nRet = rename(pszPath,pszDestPath);

    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    return osl_File_E_None;
}
#endif
/*****************************************
 * osl_psz_copyFile
 ****************************************/
#if 0
static oslFileError osl_psz_copyFile( const sal_Char* pszPath, const sal_Char* pszDestPath )
{
    time_t nAcTime=0;
    time_t nModTime=0;
    uid_t nUID=0;
    gid_t nGID=0;
    int nRet=0;
    mode_t nMode=0;
    struct stat aFileStat;
    oslFileError tErr=osl_File_E_invalidError;
    size_t nSourceSize=0;
    int DestFileExists=1;

    /* mfe: does the source file really exists? */
    nRet = lstat(pszPath,&aFileStat);

    if ( nRet < 0 )
    {
        nRet=errno;
        return oslTranslateFileError(OSL_FET_ERROR, nRet);
    }

    /* mfe: we do only copy files here! */
    if ( S_ISDIR(aFileStat.st_mode) )
    {
        return osl_File_E_ISDIR;
    }

    nSourceSize=(size_t)aFileStat.st_size;
    nMode=aFileStat.st_mode;
    nAcTime=aFileStat.st_atime;
    nModTime=aFileStat.st_mtime;
    nUID=aFileStat.st_uid;
    nGID=aFileStat.st_gid;

    nRet = stat(pszDestPath,&aFileStat);
    if ( nRet < 0 )
    {
        nRet=errno;

        if ( nRet == ENOENT )
        {
            DestFileExists=0;
        }
/*        return oslTranslateFileError(nRet);*/
    }

    /* mfe: the destination file must not be a directory! */
    if ( nRet == 0 && S_ISDIR(aFileStat.st_mode) )
    {
        return osl_File_E_ISDIR;
    }
    else
    {
        /* mfe: file does not exists or is no dir */
    }

    tErr = oslDoCopy(pszPath,pszDestPath,nMode,nSourceSize,DestFileExists);

    if ( tErr != osl_File_E_None )
    {
        return tErr;
    }

    /*
     *   mfe: ignore return code
     *        since only  the success of the copy is
     *        important
     */
    oslChangeFileModes(pszDestPath,nMode,nAcTime,nModTime,nUID,nGID);

    return tErr;
}
#endif

/******************************************************************************
 *
 *                  Utility Functions
 *
 *****************************************************************************/


/*****************************************
 * oslMakeUStrFromPsz
 ****************************************/

rtl_uString* oslMakeUStrFromPsz(const sal_Char* pszStr, rtl_uString** ustrValid)
{
    rtl_string2UString(
        ustrValid,
        pszStr,
        rtl_str_getLength( pszStr ),
        osl_getThreadTextEncoding(),
        OUSTRING_TO_OSTRING_CVTFLAGS );
    OSL_ASSERT(*ustrValid != 0);

    return *ustrValid;
}

/*****************************************************************************
 * UnicodeToText
 * converting unicode to text manually saves us the penalty of a temporary
 * rtl_String object.
 ****************************************************************************/

int UnicodeToText( char * buffer, size_t bufLen, const sal_Unicode * uniText, sal_Int32 uniTextLen )
{
    rtl_UnicodeToTextConverter hConverter;
    sal_uInt32   nInfo;
    sal_Size   nSrcChars, nDestBytes;

    /* stolen from rtl/string.c */
    hConverter = rtl_createUnicodeToTextConverter( osl_getThreadTextEncoding() );

    nDestBytes = rtl_convertUnicodeToText( hConverter, 0, uniText, uniTextLen,
                                           buffer, bufLen,
                                           OUSTRING_TO_OSTRING_CVTFLAGS | RTL_UNICODETOTEXT_FLAGS_FLUSH,
                                           &nInfo, &nSrcChars );

    rtl_destroyUnicodeToTextConverter( hConverter );

    if( nInfo & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL )
    {
        errno = EOVERFLOW;
        return 0;
    }

    /* ensure trailing '\0' */
    buffer[nDestBytes] = '\0';

    return nDestBytes;
}

/*****************************************************************************
   TextToUnicode

   @param text
          The text to convert.

   @param text_buffer_size
          The number of characters.

   @param unic_text
          The unicode buffer.

   @param unic_text_buffer_size
             The size in characters of the unicode buffer.

 ****************************************************************************/

int TextToUnicode(
    const char*  text,
    size_t       text_buffer_size,
    sal_Unicode* unic_text,
    sal_Int32    unic_text_buffer_size)
{
    rtl_TextToUnicodeConverter hConverter;
    sal_uInt32 nInfo;
    sal_Size nSrcChars;
    sal_Size nDestBytes;

    /* stolen from rtl/string.c */
    hConverter = rtl_createTextToUnicodeConverter(osl_getThreadTextEncoding());

    nDestBytes = rtl_convertTextToUnicode(hConverter,
                                          0,
                                          text,  text_buffer_size,
                                          unic_text, unic_text_buffer_size,
                                          OSTRING_TO_OUSTRING_CVTFLAGS | RTL_TEXTTOUNICODE_FLAGS_FLUSH,
                                          &nInfo, &nSrcChars);

    rtl_destroyTextToUnicodeConverter(hConverter);

    if (nInfo & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL)
    {
        errno = EOVERFLOW;
        return 0;
    }

    /* ensure trailing '\0' */
    unic_text[nDestBytes] = '\0';

    return nDestBytes;
}

/******************************************************************************
 *
 *                  GENERIC FLOPPY FUNCTIONS
 *
 *****************************************************************************/


/*****************************************
 * osl_unmountVolumeDevice
 ****************************************/

oslFileError osl_unmountVolumeDevice( oslVolumeDeviceHandle Handle )
{
    oslFileError tErr = osl_File_E_NOSYS;

    tErr = osl_unmountFloppy(Handle);

     /* Perhaps current working directory is set to mount point */

     if ( tErr )
    {
        sal_Char *pszHomeDir = getenv("HOME");

        if ( pszHomeDir && strlen( pszHomeDir ) && 0 == chdir( pszHomeDir ) )
        {
            /* try again */

            tErr = osl_unmountFloppy(Handle);

            OSL_ENSURE( tErr, "osl_unmountvolumeDevice: CWD was set to volume mount point" );
        }
    }

    return tErr;
}

/*****************************************
 * osl_automountVolumeDevice
 ****************************************/

oslFileError osl_automountVolumeDevice( oslVolumeDeviceHandle Handle )
{
    oslFileError tErr = osl_File_E_NOSYS;

    tErr = osl_mountFloppy(Handle);

    return tErr;
}

/*****************************************
 * osl_getVolumeDeviceMountPath
 ****************************************/

oslFileError osl_getVolumeDeviceMountPath( oslVolumeDeviceHandle Handle, rtl_uString **pstrPath )
{
    oslVolumeDeviceHandleImpl* pItem = (oslVolumeDeviceHandleImpl*) Handle;
    sal_Char Buffer[PATH_MAX];

    Buffer[0] = '\0';

    if ( pItem == 0 || pstrPath == 0 )
    {
        return osl_File_E_INVAL;
    }

    if ( pItem->ident[0] != 'O' || pItem->ident[1] != 'V' || pItem->ident[2] != 'D' || pItem->ident[3] != 'H' )
    {
        return osl_File_E_INVAL;
    }

#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"Handle is:\n");
    osl_printFloppyHandle(pItem);
#endif

    snprintf(Buffer, sizeof(Buffer), "file://%s", pItem->pszMountPoint);

#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"Mount Point is: '%s'\n",Buffer);
#endif

    oslMakeUStrFromPsz(Buffer, pstrPath);

    return osl_File_E_None;
}

/*****************************************
 * osl_acquireVolumeDeviceHandle
 ****************************************/

oslFileError SAL_CALL osl_acquireVolumeDeviceHandle( oslVolumeDeviceHandle Handle )
{
    oslVolumeDeviceHandleImpl* pItem =(oslVolumeDeviceHandleImpl*) Handle;

    if ( pItem == 0 )
    {
        return osl_File_E_INVAL;
    }

    if ( pItem->ident[0] != 'O' || pItem->ident[1] != 'V' || pItem->ident[2] != 'D' || pItem->ident[3] != 'H' )
    {
        return osl_File_E_INVAL;
    }

    ++pItem->RefCount;

    return osl_File_E_None;
}

/*****************************************
 * osl_releaseVolumeDeviceHandle
 ****************************************/

oslFileError osl_releaseVolumeDeviceHandle( oslVolumeDeviceHandle Handle )
{
    oslVolumeDeviceHandleImpl* pItem =(oslVolumeDeviceHandleImpl*) Handle;

    if ( pItem == 0 )
    {
        return osl_File_E_INVAL;
    }

    if ( pItem->ident[0] != 'O' || pItem->ident[1] != 'V' || pItem->ident[2] != 'D' || pItem->ident[3] != 'H' )
    {
        return osl_File_E_INVAL;
    }

    --pItem->RefCount;

    if ( pItem->RefCount == 0 )
    {
        rtl_freeMemory(pItem);
    }

    return osl_File_E_None;
}

/*****************************************
 * osl_newVolumeDeviceHandleImpl
 ****************************************/

static oslVolumeDeviceHandleImpl* osl_newVolumeDeviceHandleImpl()
{
    oslVolumeDeviceHandleImpl* pHandle;
    const size_t               nSizeOfHandle = sizeof(oslVolumeDeviceHandleImpl);

    pHandle = (oslVolumeDeviceHandleImpl*) rtl_allocateMemory (nSizeOfHandle);
    if (pHandle != NULL)
    {
        pHandle->ident[0]         = 'O';
        pHandle->ident[1]         = 'V';
        pHandle->ident[2]         = 'D';
        pHandle->ident[3]         = 'H';
        pHandle->pszMountPoint[0] = '\0';
        pHandle->pszFilePath[0]   = '\0';
        pHandle->pszDevice[0]     = '\0';
        pHandle->RefCount         = 1;
    }
    return pHandle;
}

/*****************************************
 * osl_freeVolumeDeviceHandleImpl
 ****************************************/

static void osl_freeVolumeDeviceHandleImpl (oslVolumeDeviceHandleImpl* pHandle)
{
    if (pHandle != NULL)
        rtl_freeMemory (pHandle);
}


/******************************************************************************
 *
 *                  OS/2 FLOPPY FUNCTIONS
 *
 *****************************************************************************/

#if defined(OS2)
static oslVolumeDeviceHandle osl_isFloppyDrive(const sal_Char* pszPath)
{
    return NULL;
}

static oslFileError osl_mountFloppy(oslVolumeDeviceHandle hFloppy)
{
    return osl_File_E_BUSY;
}

static oslFileError osl_unmountFloppy(oslVolumeDeviceHandle hFloppy)
{
    return osl_File_E_BUSY;
}

static sal_Bool osl_getFloppyMountEntry(const sal_Char* pszPath, oslVolumeDeviceHandleImpl* pItem)
{
    return sal_False;
}

static sal_Bool osl_isFloppyMounted(oslVolumeDeviceHandleImpl* pDevice)
{
    return sal_False;
}


#ifdef DEBUG_OSL_FILE
static void osl_printFloppyHandle(oslVolumeDeviceHandleImpl* pItem)
{
    if (pItem == 0 )
    {
        fprintf(stderr,"NULL Handle\n");
        return;
    }
    if ( pItem->ident[0] != 'O' || pItem->ident[1] != 'V' || pItem->ident[2] != 'D' || pItem->ident[3] != 'H' )
    {
#ifdef TRACE_OSL_FILE
        fprintf(stderr,"Invalid Handle]\n");
#endif
        return;
    }


    fprintf(stderr,"MountPoint : '%s'\n",pItem->pszMountPoint);
    fprintf(stderr,"FilePath   : '%s'\n",pItem->pszFilePath);
    fprintf(stderr,"Device     : '%s'\n",pItem->pszDevice);

    return;
}
#endif

#endif /* OS2 */