AOO410/main/sal/osl/unx/file_volume.cxx

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



#include "osl/file.h"

#include "osl/diagnose.h"
#include "osl/thread.h"
#include "rtl/alloc.h"

#include "file_error_transl.h"
#include "file_url.h"
#include "system.h"

#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>

#ifdef HAVE_STATFS_H
#undef HAVE_STATFS_H
#endif

#if defined(LINUX) && defined(__FreeBSD_kernel__)
#undef LINUX
#define FREEBSD 1
#endif


#if defined(SOLARIS)

#include <sys/mnttab.h>
#include <sys/statvfs.h>
#define  HAVE_STATFS_H
#include <sys/fs/ufs_quota.h>
static const sal_Char* MOUNTTAB="/etc/mnttab";

#elif defined(LINUX)

#include <mntent.h>
#include <sys/vfs.h>
#define  HAVE_STATFS_H
#include <sys/quota.h>
//#include <ctype.h>
static const sal_Char* MOUNTTAB="/etc/mtab";

#elif defined(NETBSD) || defined(FREEBSD)

#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <ufs/ufs/quota.h>
//#include <ctype.h>
#define  HAVE_STATFS_H

/* No mounting table on *BSD
 * This information is stored only in the kernel. */
/* static const sal_Char* MOUNTTAB="/etc/mtab"; */

#elif defined(MACOSX)

#include <sys/quota.h>
#include <sys/param.h>
#include <sys/mount.h>
#define HAVE_STATFS_H
// static const sal_Char* MOUNTTAB="/etc/mtab";

#endif /* HAVE_STATFS_H */

/************************************************************************
 *   ToDo
 *
 *   - Fix: check for corresponding struct sizes in exported functions
 *   - check size/use of oslVolumeDeviceHandle
 *   - check size/use of oslVolumeInfo
 ***********************************************************************/
/******************************************************************************
 *
 *                  Data Type Definition
 *
 ******************************************************************************/

typedef struct _oslVolumeDeviceHandleImpl
{
    sal_Char pszMountPoint[PATH_MAX];
    sal_Char pszFilePath[PATH_MAX];
    sal_Char pszDevice[PATH_MAX];
    sal_Char ident[4];
    sal_uInt32   RefCount;
} oslVolumeDeviceHandleImpl;

/******************************************************************************
 *
 *                  '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);

#if defined(SOLARIS)
static sal_Bool       osl_isFloppyMounted(sal_Char* pszPath, sal_Char* pszMountPath);
static sal_Bool       osl_getFloppyMountEntry(const sal_Char* pszPath, sal_Char* pBuffer);
static sal_Bool       osl_checkFloppyPath(sal_Char* pszPath, sal_Char* pszFilePath, sal_Char* pszDevicePath);
#endif /* SOLARIS */

#if defined(LINUX)
static sal_Bool       osl_isFloppyMounted(oslVolumeDeviceHandleImpl* pDevice);
static sal_Bool       osl_getFloppyMountEntry(const sal_Char* pszPath, oslVolumeDeviceHandleImpl* pItem);
#endif /* LINUX */

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

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

static oslFileError osl_psz_getVolumeInformation(const sal_Char* , oslVolumeInfo* pInfo, sal_uInt32 uFieldMask);

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

oslFileError osl_getVolumeInformation( rtl_uString* ustrDirectoryURL, oslVolumeInfo* pInfo, sal_uInt32 uFieldMask )
{
    char path[PATH_MAX];
    oslFileError eRet;

    OSL_ASSERT( ustrDirectoryURL );
    OSL_ASSERT( pInfo );

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

#ifdef MACOSX
    if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
      return oslTranslateFileError( OSL_FET_ERROR, errno );
#endif/* MACOSX */

    return osl_psz_getVolumeInformation( path, pInfo, uFieldMask);
}

/******************************************************************************
 *
 *                  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 || MACOSX */

#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;
}

/******************************************************************************
 *
 *                  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
 ****************************************/
static 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;
}

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;
}

#ifndef MACOSX

/*****************************************
 * 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);
}
#endif

/******************************************************************************
 *
 *                  SOLARIS FLOPPY FUNCTIONS
 *
 *****************************************************************************/

#if defined(SOLARIS)
/* compare a given devicename with the typical device names on a Solaris box */
static sal_Bool
osl_isAFloppyDevice (const char* pDeviceName)
{
    const char* pFloppyDevice [] = { 
        "/dev/fd",           "/dev/rfd", 
        "/dev/diskette",     "/dev/rdiskette", 
        "/vol/dev/diskette", "/vol/dev/rdiskette" 
    };

    int i;
    for (i = 0; i < (sizeof(pFloppyDevice)/sizeof(pFloppyDevice[0])); i++)
    {
        if (strncmp(pDeviceName, pFloppyDevice[i], strlen(pFloppyDevice[i])) == 0)
            return sal_True;
    }
    return sal_False;
}

/* compare two directories whether the first may be a parent of the second. this
 * does not realpath() resolving */
static sal_Bool
osl_isAParentDirectory (const char* pParentDir, const char* pSubDir)
{
    return strncmp(pParentDir, pSubDir, strlen(pParentDir)) == 0; 
}

/* the name of the routine is obviously silly. But anyway create a 
 * oslVolumeDeviceHandle with correct mount point, device name and a resolved filepath
 * only if pszPath points to file or directory on a floppy */
static oslVolumeDeviceHandle 
osl_isFloppyDrive(const sal_Char* pszPath)
{
    FILE*                       pMountTab;
    struct mnttab               aMountEnt;
    oslVolumeDeviceHandleImpl*  pHandle;

    if ((pHandle = osl_newVolumeDeviceHandleImpl()) == NULL)
    {
        return NULL;
    }
    if (realpath(pszPath, pHandle->pszFilePath) == NULL)
    {
        osl_freeVolumeDeviceHandleImpl (pHandle);
        return NULL;
    }
    if ((pMountTab = fopen (MOUNTTAB, "r")) == NULL)
    {
        osl_freeVolumeDeviceHandleImpl (pHandle);
        return NULL;
    }

    while (getmntent(pMountTab, &aMountEnt) == 0)
    {
        const char *pMountPoint = aMountEnt.mnt_mountp;
        const char *pDevice     = aMountEnt.mnt_special; 
        if (   osl_isAParentDirectory (aMountEnt.mnt_mountp, pHandle->pszFilePath)
            && osl_isAFloppyDevice    (aMountEnt.mnt_special))
        {
            /* skip the last item for it is the name of the disk */
            char * pc = strrchr( aMountEnt.mnt_special, '/' );
            
            if ( NULL != pc )
            {
                int len = pc - aMountEnt.mnt_special;
                                
                strncpy( pHandle->pszDevice, aMountEnt.mnt_special, len );
                pHandle->pszDevice[len] = '\0';
            }
            else
			{
				/* #106048 use save str functions to avoid buffer overflows */
				memset(pHandle->pszDevice, 0, sizeof(pHandle->pszDevice));				
				strncpy(pHandle->pszDevice, aMountEnt.mnt_special, sizeof(pHandle->pszDevice) - 1);				                
            }
			
            /* remember the mount point */
			memset(pHandle->pszMountPoint, 0, sizeof(pHandle->pszMountPoint));
			strncpy(pHandle->pszMountPoint, aMountEnt.mnt_mountp, sizeof(pHandle->pszMountPoint) - 1);
			            
            fclose (pMountTab);
            return pHandle;
        }
    }

    fclose (pMountTab);
    osl_freeVolumeDeviceHandleImpl (pHandle);
    return NULL;
}

static oslFileError osl_mountFloppy(oslVolumeDeviceHandle hFloppy)
{
    FILE*                       pMountTab;
    struct mnttab               aMountEnt;
    oslVolumeDeviceHandleImpl*  pHandle = (oslVolumeDeviceHandleImpl*) hFloppy;

    int nRet=0;
    sal_Char pszCmd[512] = "";
   
    if ( pHandle == 0 )
        return osl_File_E_INVAL;

    /* FIXME: don't know what this is good for */    
    if ( pHandle->ident[0] != 'O' || pHandle->ident[1] != 'V' || pHandle->ident[2] != 'D' || pHandle->ident[3] != 'H' )
        return osl_File_E_INVAL;

    snprintf(pszCmd, sizeof(pszCmd), "eject -q %s > /dev/null 2>&1", pHandle->pszDevice);
	
    nRet = system( pszCmd );

    switch ( WEXITSTATUS(nRet) )
    {
    case 0:        
        {
            /* lookup the device in mount tab again */
            if ((pMountTab = fopen (MOUNTTAB, "r")) == NULL)
                return osl_File_E_BUSY;

            while (getmntent(pMountTab, &aMountEnt) == 0)
            {
                const char *pMountPoint = aMountEnt.mnt_mountp;
                const char *pDevice     = aMountEnt.mnt_special; 
                if ( 0 == strncmp( pHandle->pszDevice, aMountEnt.mnt_special, strlen(pHandle->pszDevice) ) )
                {
					memset(pHandle->pszMountPoint, 0, sizeof(pHandle->pszMountPoint));
                    strncpy (pHandle->pszMountPoint, aMountEnt.mnt_mountp, sizeof(pHandle->pszMountPoint) - 1);
										
                    fclose (pMountTab);
                    return osl_File_E_None;
                }
            }

            fclose (pMountTab);
            return osl_File_E_BUSY;
        }
        //break; // break not necessary here, see return statements before
         
    case 1:
        return osl_File_E_BUSY;

    default:
        break;
    }

    return osl_File_E_BUSY;
}

static oslFileError osl_unmountFloppy(oslVolumeDeviceHandle hFloppy)
{
//    FILE*                       pMountTab;
//    struct mnttab               aMountEnt;
    oslVolumeDeviceHandleImpl*  pHandle = (oslVolumeDeviceHandleImpl*) hFloppy;    
    
    int nRet=0;
    sal_Char pszCmd[512] = "";
    
    if ( pHandle == 0 )
        return osl_File_E_INVAL;

    /* FIXME: don't know what this is good for */    
    if ( pHandle->ident[0] != 'O' || pHandle->ident[1] != 'V' || pHandle->ident[2] != 'D' || pHandle->ident[3] != 'H' )
        return osl_File_E_INVAL;
    
    snprintf(pszCmd, sizeof(pszCmd), "eject %s > /dev/null 2>&1", pHandle->pszDevice);
	
    nRet = system( pszCmd );

    switch ( WEXITSTATUS(nRet) )
    {
    case 0:        
        {
            FILE*         pMountTab;
            struct mnttab aMountEnt;
            
            /* lookup if device is still in mount tab */
            if ((pMountTab = fopen (MOUNTTAB, "r")) == NULL)
                return osl_File_E_BUSY;

            while (getmntent(pMountTab, &aMountEnt) == 0)
            {
                const char *pMountPoint = aMountEnt.mnt_mountp;
                const char *pDevice     = aMountEnt.mnt_special; 
                if ( 0 == strncmp( pHandle->pszDevice, aMountEnt.mnt_special, strlen(pHandle->pszDevice) ) )
                {
                    fclose (pMountTab);
                    return osl_File_E_BUSY;
                }
            }

            fclose (pMountTab);
            pHandle->pszMountPoint[0] = 0;
            return osl_File_E_None;
        }
        
        //break; //break not necessary, see return statements before
        
    case 1:
        return osl_File_E_NODEV;

    case 4:
        pHandle->pszMountPoint[0] = 0;
        return osl_File_E_None;

    default:
        break;
    }

    return osl_File_E_BUSY;
}

#endif /* SOLARIS */

/******************************************************************************
 *
 *                  LINUX FLOPPY FUNCTIONS
 *
 *****************************************************************************/

#if defined(LINUX)
static oslVolumeDeviceHandle 
osl_isFloppyDrive (const sal_Char* pszPath)
{
    oslVolumeDeviceHandleImpl* pItem = osl_newVolumeDeviceHandleImpl(); 
    if (osl_getFloppyMountEntry(pszPath, pItem))
        return (oslVolumeDeviceHandle) pItem;
    
    osl_freeVolumeDeviceHandleImpl (pItem);
    return 0;
}
#endif /* LINUX */

#if defined(LINUX)
static oslFileError osl_mountFloppy(oslVolumeDeviceHandle hFloppy)
{       
    sal_Bool bRet = sal_False;
    oslVolumeDeviceHandleImpl* pItem=0;
    int nRet;
    sal_Char  pszCmd[PATH_MAX];
    const sal_Char* pszMountProg = "mount";
    sal_Char* pszSuDo = 0;
    sal_Char* pszTmp = 0;

    pszCmd[0] = '\0';
    
#ifdef TRACE_OSL_FILE
    fprintf(stderr,"In  osl_mountFloppy\n");
#endif

    pItem = (oslVolumeDeviceHandleImpl*) hFloppy;
    
    if ( pItem == 0 )
    {
#ifdef TRACE_OSL_FILE
        fprintf(stderr,"Out osl_mountFloppy [pItem == 0]\n");
#endif
        
        return osl_File_E_INVAL;
    }

    if ( pItem->ident[0] != 'O' || pItem->ident[1] != 'V' || pItem->ident[2] != 'D' || pItem->ident[3] != 'H' )
    {
#ifdef TRACE_OSL_FILE
        fprintf(stderr,"Out osl_mountFloppy [invalid handle]\n");
#endif
        return osl_File_E_INVAL;
    }
    
    bRet = osl_isFloppyMounted(pItem);
    if ( bRet == sal_True )
    {
#ifdef DEBUG_OSL_FILE
        fprintf(stderr,"detected mounted floppy at '%s'\n",pItem->pszMountPoint);
#endif
        return osl_File_E_BUSY;
    }

    /* mfe: we can't use the mount(2) system call!!!   */
    /*      even if we are root                        */
    /*      since mtab is not updated!!!               */
    /*      but we need it to be updated               */
    /*      some "magic" must be done                  */

/*      nRet = mount(pItem->pszDevice,pItem->pszMountPoint,0,0,0); */
/*      if ( nRet != 0 ) */
/*      { */
/*          nRet=errno; */
/*  #ifdef DEBUG_OSL_FILE */
/*          perror("mount"); */
/*  #endif */
/*      } */

    pszTmp = getenv("SAL_MOUNT_MOUNTPROG");
    if ( pszTmp != 0 )
    {
        pszMountProg=pszTmp;
    }

    pszTmp=getenv("SAL_MOUNT_SU_DO");
    if ( pszTmp != 0 )
    {
        pszSuDo=pszTmp;
    }
    
    if ( pszSuDo != 0 )
    {
        snprintf(pszCmd, sizeof(pszCmd), "%s %s %s %s",pszSuDo,pszMountProg,pItem->pszDevice,pItem->pszMountPoint);
    }
    else
    {
        snprintf(pszCmd, sizeof(pszCmd), "%s %s",pszMountProg,pItem->pszMountPoint);        
    }
    
    
#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"executing '%s'\n",pszCmd);
#endif
    
    nRet = system(pszCmd);    

#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"call returned '%i'\n",nRet);
    fprintf(stderr,"exit status is '%i'\n", WEXITSTATUS(nRet));
#endif
    
    
    switch ( WEXITSTATUS(nRet) )
    {
    case 0:
        nRet=0;
        break;
        
    case 2:
        nRet=EPERM;
        break;

    case 4:
        nRet=ENOENT;
        break;

    case 8:
        nRet=EINTR;
        break;

    case 16:
        nRet=EPERM;
        break;

    case 32:
        nRet=EBUSY;
        break;

    case 64:
        nRet=EAGAIN;
        break;

    default:
        nRet=EBUSY;
        break;
    }
    
    return ((0 == nRet) ? oslTranslateFileError(OSL_FET_SUCCESS, nRet) : oslTranslateFileError(OSL_FET_ERROR, nRet));
}
#endif /* LINUX */


#if defined(LINUX)
static oslFileError osl_unmountFloppy(oslVolumeDeviceHandle hFloppy)
{
    oslVolumeDeviceHandleImpl* pItem=0;
    int nRet=0;
    sal_Char pszCmd[PATH_MAX];
    sal_Char* pszTmp = 0;
    sal_Char* pszSuDo = 0;
    const sal_Char* pszUmountProg = "umount";

    pszCmd[0] = '\0';
    
#ifdef TRACE_OSL_FILE
    fprintf(stderr,"In  osl_unmountFloppy\n");
#endif    

    pItem = (oslVolumeDeviceHandleImpl*) hFloppy;
    
    if ( pItem == 0 )
    {
#ifdef TRACE_OSL_FILE
        fprintf(stderr,"Out osl_unmountFloppy [pItem==0]\n");
#endif
        return osl_File_E_INVAL;
    }

    if ( pItem->ident[0] != 'O' || pItem->ident[1] != 'V' || pItem->ident[2] != 'D' || pItem->ident[3] != 'H' )
    {
#ifdef TRACE_OSL_FILE
        fprintf(stderr,"Out osl_unmountFloppy [invalid handle]\n");
#endif
        return osl_File_E_INVAL;
    }

    /* mfe: we can't use the umount(2) system call!!!  */
    /*      even if we are root                        */
    /*      since mtab is not updated!!!               */
    /*      but we need it to be updated               */
    /*      some "magic" must be done                  */

/*      nRet=umount(pItem->pszDevice); */
/*      if ( nRet != 0 ) */
/*      { */
/*          nRet = errno; */
        
/*  #ifdef DEBUG_OSL_FILE */
/*          perror("mount"); */
/*  #endif */
/*      } */
    
    
    pszTmp = getenv("SAL_MOUNT_UMOUNTPROG");
    if ( pszTmp != 0 )
    {
        pszUmountProg=pszTmp;
    }

    pszTmp = getenv("SAL_MOUNT_SU_DO");
    if ( pszTmp != 0 )
    {
        pszSuDo=pszTmp;
    }

    if ( pszSuDo != 0 )
    {    
        snprintf(pszCmd, sizeof(pszCmd), "%s %s %s",pszSuDo,pszUmountProg,pItem->pszMountPoint);        
    }
    else
    {
        snprintf(pszCmd, sizeof(pszCmd), "%s %s",pszUmountProg,pItem->pszMountPoint);
    }
    

#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"executing '%s'\n",pszCmd);
#endif
    
    nRet = system(pszCmd);    

#ifdef DEBUG_OSL_FILE
    fprintf(stderr,"call returned '%i'\n",nRet);
    fprintf(stderr,"exit status is '%i'\n", WEXITSTATUS(nRet));
#endif
    
    switch ( WEXITSTATUS(nRet) )
    {
    case 0:
        nRet=0;
        break;

    default:
        nRet=EBUSY;
        break;
    }
    
#ifdef TRACE_OSL_FILE
    fprintf(stderr,"Out osl_unmountFloppy [ok]\n");
#endif    

    return ((0 == nRet) ? oslTranslateFileError(OSL_FET_SUCCESS, nRet) : oslTranslateFileError(OSL_FET_ERROR, nRet));
    
/*    return osl_File_E_None;*/
}

#endif /* LINUX */

#if defined(LINUX)
static sal_Bool 
osl_getFloppyMountEntry(const sal_Char* pszPath, oslVolumeDeviceHandleImpl* pItem)
{
    struct mntent* pMountEnt;
    FILE*          pMountTab;

    pMountTab = setmntent (MOUNTTAB, "r");
    if (pMountTab == 0)
        return sal_False;

    while ((pMountEnt = getmntent(pMountTab)) != 0)
    {
        if (   strncmp(pMountEnt->mnt_dir,    pszPath,   strlen(pMountEnt->mnt_dir)) == 0 
            && strncmp(pMountEnt->mnt_fsname, "/dev/fd", strlen("/dev/fd")) == 0)
        {
			memset(pItem->pszMountPoint, 0, sizeof(pItem->pszMountPoint));			
            strncpy(pItem->pszMountPoint, pMountEnt->mnt_dir, sizeof(pItem->pszMountPoint) - 1);
			
			memset(pItem->pszFilePath, 0, sizeof(pItem->pszFilePath));
            strncpy(pItem->pszFilePath, pMountEnt->mnt_dir, sizeof(pItem->pszFilePath) - 1);
			
			memset(pItem->pszDevice, 0, sizeof(pItem->pszDevice));
            strncpy(pItem->pszDevice, pMountEnt->mnt_fsname, sizeof(pItem->pszDevice) - 1);
           			
            endmntent (pMountTab);
            return sal_True; 
        }
    }    

    endmntent (pMountTab);
    return sal_False;
}
#endif /* LINUX */

#if defined(LINUX)
static sal_Bool 
osl_isFloppyMounted (oslVolumeDeviceHandleImpl* pDevice)
{
    oslVolumeDeviceHandleImpl aItem;    

    if (   osl_getFloppyMountEntry (pDevice->pszMountPoint, &aItem)
        && strcmp (aItem.pszMountPoint, pDevice->pszMountPoint) == 0 
        && strcmp (aItem.pszDevice,     pDevice->pszDevice) == 0)
    {
        return sal_True;
    }
    return sal_False;    
}
#endif /* LINUX */

/* NetBSD floppy functions have to be added here. Until we have done that, 
 * we use the MACOSX definitions for nonexistent floppy.
 * */

/******************************************************************************
 *
 *                  MAC OS X FLOPPY FUNCTIONS
 *
 *****************************************************************************/

#if (defined(MACOSX) || defined(NETBSD) || defined(FREEBSD))
static oslVolumeDeviceHandle osl_isFloppyDrive(const sal_Char* pszPath)
{
    return NULL;
}
#endif /* MACOSX */

#if ( defined(MACOSX) || defined(NETBSD) || defined(FREEBSD))
static oslFileError osl_mountFloppy(oslVolumeDeviceHandle hFloppy)
{
    return osl_File_E_BUSY;
}
#endif /* MACOSX */

#if ( defined(MACOSX) || defined(NETBSD) || defined(FREEBSD))
static oslFileError osl_unmountFloppy(oslVolumeDeviceHandle hFloppy)
{
    return osl_File_E_BUSY;
}
#endif /* MACOSX */

#if ( defined(NETBSD) || defined(FREEBSD) )
static sal_Bool osl_getFloppyMountEntry(const sal_Char* pszPath, oslVolumeDeviceHandleImpl* pItem)
{
    return sal_False;
}
#endif /* NETBSD || FREEBSD */

#if ( defined(NETBSD) || defined(FREEBSD) )
static sal_Bool osl_isFloppyMounted(oslVolumeDeviceHandleImpl* pDevice)
{
    return sal_False;
}
#endif /* NETBSD || FREEBSD */


#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