/* Copyright (C) 2004, 2005, 2006, 2007, 2008 Bart Hakvoort
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 Library General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
 
#include "../include/Win_GParted.h"
#include "../include/GParted_Core.h"
#include "../include/OperationCopy.h"
#include "../include/OperationCreate.h"
#include "../include/OperationDelete.h"
#include "../include/OperationFormat.h"
#include "../include/OperationResizeMove.h"
#include "../include/OperationLabelPartition.h"

#include "../include/ext2.h"
#include "../include/ext3.h"
#include "../include/fat16.h"
#include "../include/fat32.h"
#include "../include/linux_swap.h"
#include "../include/reiserfs.h"
#include "../include/ntfs.h"
#include "../include/xfs.h"
#include "../include/jfs.h"
#include "../include/hfs.h"
#include "../include/hfsplus.h"
#include "../include/reiser4.h"
#include "../include/ufs.h"

#include <cerrno>
#include <sys/statvfs.h>

std::vector<Glib::ustring> libparted_messages ; //see ped_exception_handler()

namespace GParted
{

GParted_Core::GParted_Core() 
{
	lp_device = NULL ;
	lp_disk = NULL ;
	lp_partition = NULL ;
	p_filesystem = NULL ;

	ped_exception_set_handler( ped_exception_handler ) ; 

	//get valid flags ...
	for ( PedPartitionFlag flag = ped_partition_flag_next( static_cast<PedPartitionFlag>( NULL ) ) ;
	      flag ;
	      flag = ped_partition_flag_next( flag ) )
		flags .push_back( flag ) ;
	
	//throw libpartedversion to the stdout to see which version is actually used.
	std::cout << "======================" << std::endl ;
	std::cout << "libparted : " << ped_get_version() << std::endl ;
	std::cout << "======================" << std::endl ;

	//initialize filesystemlist
	find_supported_filesystems() ;
}

void GParted_Core::find_supported_filesystems()
{
	FILESYSTEMS .clear() ;
	
	ext2 fs_ext2;
	FILESYSTEMS .push_back( fs_ext2 .get_filesystem_support() ) ;
	
	ext3 fs_ext3;
	FILESYSTEMS .push_back( fs_ext3 .get_filesystem_support() ) ;
	
	fat16 fs_fat16;
	FILESYSTEMS .push_back( fs_fat16 .get_filesystem_support() ) ;
	
	fat32 fs_fat32;
	FILESYSTEMS .push_back( fs_fat32 .get_filesystem_support() ) ;
	
	hfs fs_hfs;
	FILESYSTEMS .push_back( fs_hfs .get_filesystem_support() ) ;
	
	hfsplus fs_hfsplus;
	FILESYSTEMS .push_back( fs_hfsplus .get_filesystem_support() ) ;
	
	jfs fs_jfs;
	FILESYSTEMS .push_back( fs_jfs .get_filesystem_support() ) ;
	
	linux_swap fs_linux_swap;
	FILESYSTEMS .push_back( fs_linux_swap .get_filesystem_support() ) ;
	
	ntfs fs_ntfs;
	FILESYSTEMS .push_back( fs_ntfs .get_filesystem_support() ) ;
	
	reiser4 fs_reiser4;
	FILESYSTEMS .push_back( fs_reiser4 .get_filesystem_support() ) ;
	
	reiserfs fs_reiserfs;
	FILESYSTEMS .push_back( fs_reiserfs .get_filesystem_support() ) ;
	
	ufs fs_ufs;
	FILESYSTEMS .push_back( fs_ufs .get_filesystem_support() ) ;
	
	xfs fs_xfs;
	FILESYSTEMS .push_back( fs_xfs .get_filesystem_support() ) ;
	
	//unknown filesystem (default when no match is found)
	FS fs ; fs .filesystem = GParted::FS_UNKNOWN ;
	FILESYSTEMS .push_back( fs ) ;
}
	
void GParted_Core::set_user_devices( const std::vector<Glib::ustring> & user_devices ) 
{
	this ->device_paths = user_devices ;
	this ->probe_devices = ! user_devices .size() ;
}
	
void GParted_Core::set_devices( std::vector<Device> & devices )
{
	devices .clear() ;
	Device temp_device ;
	
	init_maps() ;
	
	//only probe if no devices were specified as arguments..
	if ( probe_devices )
	{
		device_paths .clear() ;

		//try to find all available devices
		std::ifstream proc_partitions( "/proc/partitions" ) ;
    	if ( proc_partitions )
    	{
    		//parse device names from /proc/partitions
    		std::string line ;
    		std::string device ;
    		while ( getline( proc_partitions, line ) )
    		{
    			//Device names without a trailing digit refer to the whole disk.
    			//These whole disk devices are the ones we want.
    			device = Utils::regexp_label(line, "^[\t ]+[0-9]+[\t ]+[0-9]+[\t ]+[0-9]+[\t ]+([^0-9]+)$") ;
    			if ( device != "" )
    			{
    				//try to have libparted detect the device and add it to the list
    				device = "/dev/" + device;
    				ped_device_get( device .c_str() ) ;
    			}
    		}
    		proc_partitions .close() ;
    	}
    	else
    	{
    		//file /proc/partitions doesn't exist so use libparted to probe devices
    		ped_device_probe_all();
    	}

		lp_device = ped_device_get_next( NULL );
		while ( lp_device ) 
		{
			//only add this device if we can read the first sector (which means it's a real device)
			char * buf = static_cast<char *>( malloc( lp_device ->sector_size ) ) ;
			if ( buf )
			{
				if ( ped_device_open( lp_device ) )
				{
					if ( ped_device_read( lp_device, buf, 0, 1 ) )
						device_paths .push_back( lp_device ->path ) ;

					ped_device_close( lp_device ) ;
				}
				free( buf ) ;
			}
			lp_device = ped_device_get_next( lp_device ) ;
		}
		close_device_and_disk() ;

		std::sort( device_paths .begin(), device_paths .end() ) ;
	}

	for ( unsigned int t = 0 ; t < device_paths .size() ; t++ ) 
	{ 
		if ( open_device_and_disk( device_paths[ t ], false ) )
		{
			temp_device .Reset() ;
			
			//device info..
			temp_device .add_path( device_paths[ t ] ) ;
			temp_device .add_paths( get_alternate_paths( temp_device .get_path() ) ) ;

			temp_device .model 	=	lp_device ->model ;
			temp_device .heads 	=	lp_device ->bios_geom .heads ;
			temp_device .sectors 	=	lp_device ->bios_geom .sectors ;
			temp_device .cylinders	=	lp_device ->bios_geom .cylinders ;
			temp_device .length 	=	temp_device .heads * temp_device .sectors * temp_device .cylinders ;
			temp_device .cylsize 	=	temp_device .heads * temp_device .sectors ; 
		
			//make sure cylsize is at least 1 MiB
			if ( temp_device .cylsize < MEBIBYTE )
				temp_device .cylsize = MEBIBYTE ;
				
			//normal harddisk
			if ( lp_disk )
			{
				temp_device .disktype =	lp_disk ->type ->name ;
				temp_device .max_prims = ped_disk_get_max_primary_partition_count( lp_disk ) ;
				
				set_device_partitions( temp_device ) ;
				set_mountpoints( temp_device .partitions ) ;
				set_used_sectors( temp_device .partitions ) ;
			
				if ( temp_device .highest_busy )
					temp_device .readonly = ! commit_to_os( 1 ) ;
			}
			//harddisk without disklabel
			else
			{
				temp_device .disktype = _("unrecognized") ;
				temp_device .max_prims = -1 ;
				
				Partition partition_temp ;
				partition_temp .Set_Unallocated( temp_device .get_path(),
								 0,
								 temp_device .length,
								 false );
				temp_device .partitions .push_back( partition_temp );
			}
					
			devices .push_back( temp_device ) ;
			
			close_device_and_disk() ;
		}
	}

	//clear leftover information...	
	//NOTE that we cannot clear mountinfo since it might be needed in get_all_mountpoints()
	alternate_paths .clear() ;
	fstab_info .clear() ;
}

bool GParted_Core::snap_to_cylinder( const Device & device, Partition & partition, Glib::ustring & error ) 
{
	if ( ! partition .strict )
	{
		//FIXME: this doesn't work to well, when dealing with layouts which contain an extended partition
		//because of the metadata length % cylindersize isn't always 0
		Sector diff = partition .sector_start % device .cylsize ;
		if ( diff )
		{
			if ( diff < ( device .cylsize / 2 ) )
				partition .sector_start -= diff ;
			else
				partition .sector_start += (device .cylsize - diff ) ;
		}
	
		diff = (partition .sector_end +1) % device .cylsize ;
		if ( diff )
		{
			if ( diff < ( device .cylsize / 2 ) )
				partition .sector_end -= diff ;
			else
				partition .sector_end += (device .cylsize - diff ) ;
		}
	
		if ( partition .sector_start < 0 )
			partition .sector_start = 0 ;
		if ( partition .sector_end > device .length )
			partition .sector_end = device .length -1 ;

		//ok, do some basic checks on the partition..
		if ( partition .get_length() <= 0 )
		{
			error = String::ucompose( _("A partition cannot have a length of %1 sectors"),
						  partition .get_length() ) ;
			return false ;
		}

		if ( partition .get_length() < partition .sectors_used )
		{
			error = String::ucompose( 
				_("A partition with used sectors (%1) greater than it's length (%2) is not valid"),
				partition .sectors_used,
				partition .get_length() ) ;
			return false ;
		}

		//FIXME: it would be perfect if we could check for overlapping with adjacent partitions as well,
		//however, finding the adjacent partitions is not as easy as it seems and at this moment all the dialogs
		//already perform these checks. A perfect 'fixme-later' ;)
	}

	return true ;
}

bool GParted_Core::apply_operation_to_disk( Operation * operation )
{
	bool succes = false ;
	libparted_messages .clear() ;

	if ( calibrate_partition( operation ->partition_original, operation ->operation_detail ) )
		switch ( operation ->type )
		{	     
			case OPERATION_DELETE:
				succes = Delete( operation ->partition_original, operation ->operation_detail ) ;
				break ;
			case OPERATION_CHECK:
				succes = check_repair_filesystem( operation ->partition_original, operation ->operation_detail ) &&
					 maximize_filesystem( operation ->partition_original, operation ->operation_detail ) ;
				break ;
			case OPERATION_CREATE:
				succes = create( operation ->device, 
					         operation ->partition_new,
					         operation ->operation_detail ) ;
				break ;
			case OPERATION_RESIZE_MOVE:
				//in case the to be resized/moved partition was a 'copy of..', we need a real path...
				operation ->partition_new .add_path( operation ->partition_original .get_path(), true ) ;
				succes = resize_move( operation ->device,
					       	      operation ->partition_original,
						      operation ->partition_new,
						      operation ->operation_detail ) ;
				break ;
			case OPERATION_FORMAT:
				succes = format( operation ->partition_new, operation ->operation_detail ) ;
				break ;
			case OPERATION_COPY:
			//FIXME: in case of a new partition we should make sure the new partition is >= the source partition... 
			//i think it's best to do this in the dialog_paste
				succes = ( operation ->partition_original .type == TYPE_UNALLOCATED || 
					   calibrate_partition( operation ->partition_new, operation ->operation_detail ) ) &&
				
					 calibrate_partition( static_cast<OperationCopy*>( operation ) ->partition_copied,
							      operation ->operation_detail ) &&

					 copy( static_cast<OperationCopy*>( operation ) ->partition_copied,
					       operation ->partition_new,
					       static_cast<OperationCopy*>( operation ) ->partition_copied .get_length(),
					       operation ->operation_detail ) ;
				break ;
			case OPERATION_LABEL_PARTITION:
				succes = label_partition( operation ->partition_new, operation ->operation_detail ) ;
				break ;
		}

	if ( libparted_messages .size() > 0 )
	{
		operation ->operation_detail .add_child( OperationDetail( _("libparted messages"), STATUS_INFO ) ) ;

		for ( unsigned int t = 0 ; t < libparted_messages .size() ; t++ )
			operation ->operation_detail .get_last_child() .add_child(
				OperationDetail( libparted_messages[ t ], STATUS_NONE, FONT_ITALIC ) ) ;
	}

	return succes ;
}

bool GParted_Core::set_disklabel( const Glib::ustring & device_path, const Glib::ustring & disklabel ) 
{
	bool return_value = false ;
	
	if ( open_device_and_disk( device_path, false ) )
	{
		PedDiskType *type = NULL ;
		type = ped_disk_type_get( disklabel .c_str() ) ;
		
		if ( type )
		{
			lp_disk = ped_disk_new_fresh( lp_device, type );
		
			return_value = commit() ;
		}
		
		close_device_and_disk() ;
	}
	
	return return_value ;	
}
	
bool GParted_Core::toggle_flag( const Partition & partition, const Glib::ustring & flag, bool state ) 
{
	bool succes = false ;

	if ( open_device_and_disk( partition .device_path ) )
	{
		lp_partition = NULL ;
		if ( partition .type == GParted::TYPE_EXTENDED )
			lp_partition = ped_disk_extended_partition( lp_disk ) ;
		else
			lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;
	
		if ( lp_partition )
		{
			PedPartitionFlag lp_flag = ped_partition_flag_get_by_name( flag .c_str() ) ;

			if ( lp_flag > 0 && ped_partition_set_flag( lp_partition, lp_flag, state ) )
				succes = commit() ;
		}
	
		close_device_and_disk() ;
	}

	return succes ;
}

const std::vector<FS> & GParted_Core::get_filesystems() const 
{
	return FILESYSTEMS ;
}

const FS & GParted_Core::get_fs( GParted::FILESYSTEM filesystem ) const 
{
	for ( unsigned int t = 0 ; t < FILESYSTEMS .size() ; t++ )
		if ( FILESYSTEMS[ t ] .filesystem == filesystem )
			return FILESYSTEMS[ t ] ;
	
	return FILESYSTEMS .back() ;
}

std::vector<Glib::ustring> GParted_Core::get_disklabeltypes() 
{
	std::vector<Glib::ustring> disklabeltypes ;
	
	//msdos should be first in the list
	disklabeltypes .push_back( "msdos" ) ;
	
	 PedDiskType *disk_type ;
	 for ( disk_type = ped_disk_type_get_next( NULL ) ; disk_type ; disk_type = ped_disk_type_get_next( disk_type ) ) 
		 if ( Glib::ustring( disk_type->name ) != "msdos" )
			disklabeltypes .push_back( disk_type->name ) ;

	 return disklabeltypes ;
}

std::vector<Glib::ustring> GParted_Core::get_all_mountpoints() 
{
	std::vector<Glib::ustring> mountpoints ;

	for ( iter_mp = mount_info .begin() ; iter_mp != mount_info .end() ; ++iter_mp )
		mountpoints .insert( mountpoints .end(), iter_mp ->second .begin(), iter_mp ->second .end() ) ;

	return mountpoints ;
}
	
std::map<Glib::ustring, bool> GParted_Core::get_available_flags( const Partition & partition ) 
{
	std::map<Glib::ustring, bool> flag_info ;

	if ( open_device_and_disk( partition .device_path ) )
	{
		lp_partition = NULL ;
		if ( partition .type == GParted::TYPE_EXTENDED )
			lp_partition = ped_disk_extended_partition( lp_disk ) ;
		else
			lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;
	
		if ( lp_partition )
		{
			for ( unsigned int t = 0 ; t < flags .size() ; t++ )
				if ( ped_partition_is_flag_available( lp_partition, flags[ t ] ) )
					flag_info[ ped_partition_flag_get_name( flags[ t ] ) ] =
						ped_partition_get_flag( lp_partition, flags[ t ] ) ;
		}
	
		close_device_and_disk() ;
	}

	return flag_info ;
}
	
Glib::ustring GParted_Core::get_libparted_version() 
{
	return ped_get_version() ;
}

//private functions...

void GParted_Core::init_maps() 
{
	alternate_paths .clear() ;
	mount_info .clear() ;
	fstab_info .clear() ;

	read_mountpoints_from_file( "/proc/mounts", mount_info ) ;
	read_mountpoints_from_file( "/etc/mtab", mount_info ) ;
	read_mountpoints_from_file( "/etc/fstab", fstab_info ) ;
	
	//sort the mountpoints and remove duplicates.. (no need to do this for fstab_info)
	for ( iter_mp = mount_info .begin() ; iter_mp != mount_info .end() ; ++iter_mp )
	{
		std::sort( iter_mp ->second .begin(), iter_mp ->second .end() ) ;
		
		iter_mp ->second .erase( 
				std::unique( iter_mp ->second .begin(), iter_mp ->second .end() ),
				iter_mp ->second .end() ) ;
	}

	//initialize alternate_paths...
	std::string line ;
	std::ifstream proc_partitions( "/proc/partitions" ) ;
	if ( proc_partitions )
	{
		char c_str[4096+1] ;
		
		while ( getline( proc_partitions, line ) )
			if ( sscanf( line .c_str(), "%*d %*d %*d %4096s", c_str ) == 1 )
			{
				line = "/dev/" ; 
				line += c_str ;
				
				//FIXME: it seems realpath is very unsafe to use (manpage)...
				if ( file_test( line, Glib::FILE_TEST_EXISTS ) &&
				     realpath( line .c_str(), c_str ) &&
				     line != c_str )
				{
					//because we can make no assumption about which path libparted will detect
					//we add all combinations.
					alternate_paths[ c_str ] = line ;
					alternate_paths[ line ] = c_str ;
				}
			}

		proc_partitions .close() ;
	}
}

void GParted_Core::read_mountpoints_from_file( const Glib::ustring & filename,
					       std::map< Glib::ustring, std::vector<Glib::ustring> > & map ) 
{
	std::string line ;
	char node[4096+1], mountpoint[4096+1] ;
	unsigned int index ;
	
	std::ifstream file( filename .c_str() ) ;
	if ( file )
	{
		while ( getline( file, line ) )
			if ( Glib::str_has_prefix( line, "/" ) &&
			     sscanf( line .c_str(), "%4096s %4096s", node, mountpoint ) == 2 &&
			     Glib::ustring( node ) != "/dev/root" )
			{
				line = mountpoint ;
				
				//see if mountpoint contains spaces and deal with it
				index = line .find( "\\040" ) ;
				if ( index < line .length() )
					line .replace( index, 4, " " ) ;
				
				//only add this path if it exists
                               	if ( file_test( line, Glib::FILE_TEST_EXISTS ) )
                                       map[ node ] .push_back( line ) ;	
			}
			
		file .close() ;
	}
}

std::vector<Glib::ustring> GParted_Core::get_alternate_paths( const Glib::ustring & path ) 
{
	std::vector<Glib::ustring> paths ;
	
	iter = alternate_paths .find( path ) ;
	if ( iter != alternate_paths .end() )
		paths .push_back( iter ->second ) ;

	return paths ;
}

void GParted_Core::set_device_partitions( Device & device ) 
{
	int EXT_INDEX = -1 ;
	char * lp_path ;//we have to free the result of ped_partition_get_path()..
	
	//clear partitions
	device .partitions .clear() ;

	lp_partition = ped_disk_next_partition( lp_disk, NULL ) ;
	while ( lp_partition )
	{
		libparted_messages .clear() ;
		partition_temp .Reset() ;
	
		switch ( lp_partition ->type )
		{
			case PED_PARTITION_NORMAL:
			case PED_PARTITION_LOGICAL:  
				lp_path = ped_partition_get_path( lp_partition ) ;
				partition_temp .Set( device .get_path(),
						     lp_path,
						     lp_partition ->num,
						     lp_partition ->type == 0 ?	GParted::TYPE_PRIMARY : GParted::TYPE_LOGICAL,
						     get_filesystem(),
						     lp_partition ->geom .start,
						     lp_partition ->geom .end,
						     lp_partition ->type,
						     ped_partition_is_busy( lp_partition ) ) ;
				free( lp_path ) ;
						
				partition_temp .add_paths( get_alternate_paths( partition_temp .get_path() ) ) ;
				set_flags( partition_temp ) ;
				
				if ( partition_temp .busy && partition_temp .partition_number > device .highest_busy )
					device .highest_busy = partition_temp .partition_number ;
									
				break ;
			
			case PED_PARTITION_EXTENDED:
				lp_path = ped_partition_get_path( lp_partition ) ;
				partition_temp .Set( device .get_path(),
					 	     lp_path, 
						     lp_partition ->num,
						     GParted::TYPE_EXTENDED,
						     GParted::FS_EXTENDED,
						     lp_partition ->geom .start,
						     lp_partition ->geom .end,
						     false,
						     ped_partition_is_busy( lp_partition ) ) ;
				free( lp_path ) ;
				
				partition_temp .add_paths( get_alternate_paths( partition_temp .get_path() ) ) ;
				set_flags( partition_temp ) ;
				
				EXT_INDEX = device .partitions .size() ;
				break ;
		
			default:
				break;
		}

		get_label( partition_temp ) ;

		partition_temp .messages .insert( partition_temp .messages .end(),
						  libparted_messages. begin(),
						  libparted_messages .end() ) ;
		
		//if there's an end, there's a partition ;)
		if ( partition_temp .sector_end > -1 )
		{
			if ( ! partition_temp .inside_extended )
				device .partitions .push_back( partition_temp );
			else
				device .partitions[ EXT_INDEX ] .logicals .push_back( partition_temp ) ;
		}

		//next partition (if any)
		lp_partition = ped_disk_next_partition( lp_disk, lp_partition ) ;
	}
	
	if ( EXT_INDEX > -1 )
		insert_unallocated( device .get_path(),
				    device .partitions[ EXT_INDEX ] .logicals,
				    device .partitions[ EXT_INDEX ] .sector_start,
				    device .partitions[ EXT_INDEX ] .sector_end,
				    true ) ;
	
	insert_unallocated( device .get_path(), device .partitions, 0, device .length -1, false ) ; 
}

GParted::FILESYSTEM GParted_Core::get_filesystem() 
{
	//standard libparted filesystems..
	if ( lp_partition && lp_partition ->fs_type )
	{
		if ( Glib::ustring( lp_partition ->fs_type ->name ) == "extended" )
			return GParted::FS_EXTENDED ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "ext2" )
			return GParted::FS_EXT2 ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "ext3" )
			return GParted::FS_EXT3 ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "linux-swap" )
			return GParted::FS_LINUX_SWAP ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "fat16" )
			return GParted::FS_FAT16 ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "fat32" )
			return GParted::FS_FAT32 ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "ntfs" )
			return GParted::FS_NTFS ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "reiserfs" )
			return GParted::FS_REISERFS ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "xfs" )
			return GParted::FS_XFS ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "jfs" )
			return GParted::FS_JFS ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "hfs" )
			return GParted::FS_HFS ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "hfs+" )
			return GParted::FS_HFSPLUS ;
		else if ( Glib::ustring( lp_partition ->fs_type ->name ) == "ufs" )
			return GParted::FS_UFS ;
	}
	
	
	//other filesystems libparted couldn't detect (i've send patches for these filesystems to the parted guys)
	char buf[512] ;

	ped_device_open( lp_device );

	//reiser4
	ped_geometry_read( & lp_partition ->geom, buf, 128, 1 ) ;
	ped_device_close( lp_device );
	
	if ( Glib::ustring( buf ) == "ReIsEr4" )
		return GParted::FS_REISER4 ;		
		
	//no filesystem found....
	temp = _( "Unable to detect filesystem! Possible reasons are:" ) ;
	temp += "\n-"; 
	temp += _( "The filesystem is damaged" ) ;
	temp += "\n-" ; 
	temp += _( "The filesystem is unknown to GParted" ) ;
	temp += "\n-"; 
	temp += _( "There is no filesystem available (unformatted)" ) ; 
	
	partition_temp .messages .push_back( temp ) ;
	
	return GParted::FS_UNKNOWN ;
}
	
void GParted_Core::get_label( Partition & partition )
{
	if ( partition .type != TYPE_EXTENDED )
	{
		switch( get_fs( partition .filesystem ) .get_label )
		{
			case FS::EXTERNAL:
				if ( set_proper_filesystem( partition .filesystem ) )
					p_filesystem ->get_label( partition ) ;
				break ;
			case FS::LIBPARTED:
				break ;

			default:
				break ;
		}
	}
}

void GParted_Core::insert_unallocated( const Glib::ustring & device_path,
				       std::vector<Partition> & partitions,
				       Sector start,
				       Sector end,
				       bool inside_extended )
{
	partition_temp .Reset() ;
	partition_temp .Set_Unallocated( device_path, 0, 0, inside_extended ) ;
	
	//if there are no partitions at all..
	if ( partitions .empty() )
	{
		partition_temp .sector_start = start ;
		partition_temp .sector_end = end ;
		
		partitions .push_back( partition_temp );
		
		return ;
	}
		
	//start <---> first partition start
	if ( (partitions .front() .sector_start - start) >= MEBIBYTE )
	{
		partition_temp .sector_start = start ;
		partition_temp .sector_end = partitions .front() .sector_start -1 ;
		
		partitions .insert( partitions .begin(), partition_temp );
	}
	
	//look for gaps in between
	for ( unsigned int t =0 ; t < partitions .size() -1 ; t++ )
		if ( ( partitions[ t +1 ] .sector_start - partitions[ t ] .sector_end ) >= MEBIBYTE )
		{
			partition_temp .sector_start = partitions[ t ] .sector_end +1 ;
			partition_temp .sector_end = partitions[ t +1 ] .sector_start -1 ;
		
			partitions .insert( partitions .begin() + ++t, partition_temp );
		}
		
	//last partition end <---> end
	if ( (end - partitions .back() .sector_end ) >= MEBIBYTE )
	{
		partition_temp .sector_start = partitions .back() .sector_end +1 ;
		partition_temp .sector_end = end ;
		
		partitions .push_back( partition_temp );
	}
}
	
void GParted_Core::set_mountpoints( std::vector<Partition> & partitions ) 
{
	for ( unsigned int t = 0 ; t < partitions .size() ; t++ )
	{
		if ( ( partitions[ t ] .type == GParted::TYPE_PRIMARY ||
		       partitions[ t ] .type == GParted::TYPE_LOGICAL ) &&
		     partitions[ t ] .filesystem != GParted::FS_LINUX_SWAP )
		{
			if ( partitions[ t ] .busy )
			{
				for ( unsigned int i = 0 ; i < partitions[ t ] .get_paths() .size() ; i++ )
				{
					iter_mp = mount_info .find( partitions[ t ] .get_paths()[ i ] ) ;
					if ( iter_mp != mount_info .end() )
					{
						partitions[ t ] .add_mountpoints( iter_mp ->second ) ;
						break ;
					}
				}

				if ( partitions[ t ] .get_mountpoints() .empty() )
					partitions[ t ] .messages .push_back( _("Unable to find mountpoint") ) ;
			}
			else
			{
				iter_mp = fstab_info .find( partitions[ t ] .get_path() );
				if ( iter_mp != fstab_info .end() )
					partitions[ t ] .add_mountpoints( iter_mp ->second ) ;
			}
		}
		else if ( partitions[ t ] .type == GParted::TYPE_EXTENDED )
			set_mountpoints( partitions[ t ] .logicals ) ;
	}
}
	
void GParted_Core::set_used_sectors( std::vector<Partition> & partitions ) 
{
	struct statvfs sfs ; 
	
	temp = _("Unable to read the contents of this filesystem!") ;
	temp += "\n" ;
	temp += _("Because of this some operations may be unavailable.") ;
	
	for ( unsigned int t = 0 ; t < partitions .size() ; t++ )
	{
		if ( partitions[ t ] .filesystem != GParted::FS_LINUX_SWAP &&
		     partitions[ t ] .filesystem != GParted::FS_UNKNOWN )
		{
			if ( partitions[ t ] .type == GParted::TYPE_PRIMARY ||
			     partitions[ t ] .type == GParted::TYPE_LOGICAL ) 
			{
				if ( partitions[ t ] .busy )
				{
					if ( partitions[ t ] .get_mountpoints() .size() > 0  )
					{
						if ( statvfs( partitions[ t ] .get_mountpoint() .c_str(), &sfs ) == 0 )
							partitions[ t ] .Set_Unused( sfs .f_bfree * (sfs .f_bsize / 512) ) ;
						else
							partitions[ t ] .messages .push_back( 
								"statvfs (" + 
								partitions[ t ] .get_mountpoint() + 
								"): " + 
								Glib::strerror( errno ) ) ;
					}
				}
				else
				{
					switch( get_fs( partitions[ t ] .filesystem ) .read )
					{
						case GParted::FS::EXTERNAL	:
							if ( set_proper_filesystem( partitions[ t ] .filesystem ) )
								p_filesystem ->set_used_sectors( partitions[ t ] ) ;
							break ;
						case GParted::FS::LIBPARTED	:
							LP_set_used_sectors( partitions[ t ] ) ;
							break ;

						default:
							break ;
					}
				}

				if ( partitions[ t ] .sectors_used == -1 )
					partitions[ t ] .messages .push_back( temp ) ;
				
			}
			else if ( partitions[ t ] .type == GParted::TYPE_EXTENDED )
				set_used_sectors( partitions[ t ] .logicals ) ;
		}
	}
}

void GParted_Core::LP_set_used_sectors( Partition & partition )
{
	PedFileSystem *fs = NULL;
	PedConstraint *constraint = NULL;

	if ( lp_disk )
	{
		lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;
		
		if ( lp_partition )
		{
			fs = ped_file_system_open( & lp_partition ->geom ); 	
					
			if ( fs )
			{
				constraint = ped_file_system_get_resize_constraint( fs ) ;
				if ( constraint )
				{
					partition .Set_Unused( partition .get_length() - constraint ->min_size ) ;
					
					ped_constraint_destroy( constraint );
				}
												
				ped_file_system_close( fs ) ;
			}
		}
	}
}

void GParted_Core::set_flags( Partition & partition )
{
	for ( unsigned int t = 0 ; t < flags .size() ; t++ )
		if ( ped_partition_is_flag_available( lp_partition, flags[ t ] ) &&
		     ped_partition_get_flag( lp_partition, flags[ t ] ) )
			partition .flags .push_back( ped_partition_flag_get_name( flags[ t ] ) ) ;
}

bool GParted_Core::create( const Device & device, Partition & new_partition, OperationDetail & operationdetail ) 
{
	if ( new_partition .type == GParted::TYPE_EXTENDED )   
	{
		return create_partition( new_partition, operationdetail ) ;
	}
	else if ( create_partition( new_partition, operationdetail, get_fs( new_partition .filesystem ) .MIN ) )
	{
		if ( new_partition .filesystem == GParted::FS_UNFORMATTED )
			return true ;
		else
			return set_partition_type( new_partition, operationdetail ) &&
		       	       create_filesystem( new_partition, operationdetail ) ;
	}
	
	return false ;
}

bool GParted_Core::create_partition( Partition & new_partition, OperationDetail & operationdetail, Sector min_size )
{
	operationdetail .add_child( OperationDetail( _("create empty partition") ) ) ;
	
	new_partition .partition_number = 0 ;
		
	if ( open_device_and_disk( new_partition .device_path ) )
	{
		PedPartitionType type;
		lp_partition = NULL ;
		PedConstraint *constraint = NULL ;
		PedFileSystemType* fs_type = NULL ;
		
		//create new partition
		switch ( new_partition .type )
		{
			case GParted::TYPE_PRIMARY:
				type = PED_PARTITION_NORMAL ;
				break ;
			case GParted::TYPE_LOGICAL:
				type = PED_PARTITION_LOGICAL ;
				break ;
			case GParted::TYPE_EXTENDED:
				type = PED_PARTITION_EXTENDED ;
				break ;
				
			default	:
				type = PED_PARTITION_FREESPACE;
		}

		if ( new_partition .type != GParted::TYPE_EXTENDED )
			fs_type = ped_file_system_type_get( "ext2" ) ;

		lp_partition = ped_partition_new( lp_disk,
						  type,
						  fs_type,
						  new_partition .sector_start,
						  new_partition .sector_end ) ;
	
		if ( lp_partition )
		{
			if ( new_partition .strict )
			{
				PedGeometry *geom = ped_geometry_new( lp_device,
								      new_partition .sector_start,
								      new_partition .get_length() ) ;

				if ( geom )
					constraint = ped_constraint_exact( geom ) ;
			}
			else
				constraint = ped_constraint_any( lp_device );
			
			if ( constraint )
			{
				if ( min_size > 0 )
					constraint ->min_size = min_size ;
		
				if ( ped_disk_add_partition( lp_disk, lp_partition, constraint ) && commit() )
				{
					//we have to free the result of ped_partition_get_path()..
					char * lp_path = ped_partition_get_path( lp_partition ) ;
					new_partition .add_path( lp_path, true ) ;
					free( lp_path ) ;

					new_partition .partition_number = lp_partition ->num ;
					new_partition .sector_start = lp_partition ->geom .start ;
					new_partition .sector_end = lp_partition ->geom .end ;
					
					operationdetail .get_last_child() .add_child( OperationDetail( 
						String::ucompose( _("path: %1"), new_partition .get_path() ) + "\n" +
						String::ucompose( _("start: %1"), new_partition .sector_start ) + "\n" +
						String::ucompose( _("end: %1"), new_partition .sector_end ) + "\n" +
						String::ucompose( _("size: %1 (%2)"),
					  			  new_partition .get_length(),
					  			  Utils::format_size( new_partition .get_length() ) ),
						STATUS_NONE,
						FONT_ITALIC ) ) ;
				}
			
				ped_constraint_destroy( constraint );
			}
		}
				
		close_device_and_disk() ;
	}

	if ( new_partition .partition_number > 0 && erase_filesystem_signatures( new_partition ) )
	{ 
		operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ;
		return true ;
	}
	else
	{		
		operationdetail .get_last_child() .set_status( STATUS_ERROR ) ;	
		return false ;
	} 
}
	
bool GParted_Core::create_filesystem( const Partition & partition, OperationDetail & operationdetail ) 
{
	operationdetail .add_child( OperationDetail( String::ucompose(
							_("create new %1 filesystem"),
							Utils::get_filesystem_string( partition .filesystem ) ) ) ) ;
	
	bool succes = false ;
	switch ( get_fs( partition .filesystem ) .create )
	{
		case GParted::FS::NONE:
			break ;
		case GParted::FS::GPARTED:
			break ;
		case GParted::FS::LIBPARTED:
			break ;
		case GParted::FS::EXTERNAL:
			succes = set_proper_filesystem( partition .filesystem ) &&
				 p_filesystem ->create( partition, operationdetail .get_last_child() ) ;

			break ;
	}

	operationdetail .get_last_child() .set_status(  succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}

bool GParted_Core::format( const Partition & partition, OperationDetail & operationdetail )
{	
	//remove all filesystem signatures...
	erase_filesystem_signatures( partition ) ;

	return set_partition_type( partition, operationdetail ) && create_filesystem( partition, operationdetail ) ;
}

bool GParted_Core::Delete( const Partition & partition, OperationDetail & operationdetail ) 
{
	operationdetail .add_child( OperationDetail( _("delete partition") ) ) ;

	bool succes = false ;
	if ( open_device_and_disk( partition .device_path ) )
	{
		if ( partition .type == TYPE_EXTENDED )
			lp_partition = ped_disk_extended_partition( lp_disk ) ;
		else
			lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;
		
		succes = ped_disk_delete_partition( lp_disk, lp_partition ) && commit() ;
	
		close_device_and_disk() ;
	}

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}

bool GParted_Core::label_partition( const Partition & partition, OperationDetail & operationdetail )	
{
	if( partition .label .empty() ) {
		operationdetail .add_child( OperationDetail( String::ucompose(
														_("Clear partition label on %1"),
														partition .get_path()
													 ) ) ) ;
	} else {
		operationdetail .add_child( OperationDetail( String::ucompose(
														_("Set partition label to \"%1\" on %2"),
														partition .label, partition .get_path()
													 ) ) ) ;
	}

	bool succes = false ;
	if ( partition .type != TYPE_EXTENDED )
	{
		switch( get_fs( partition .filesystem ) .set_label )
		{
			case FS::EXTERNAL:
				succes = set_proper_filesystem( partition .filesystem ) &&
					 p_filesystem ->set_label( partition, operationdetail .get_last_child() ) ;
				break ;
			case FS::LIBPARTED:
				break ;

			default:
				break ;
		}
	}

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;

	return succes ;	
}

bool GParted_Core::resize_move( const Device & device,
				const Partition & partition_old,
			  	Partition & partition_new,
			  	OperationDetail & operationdetail ) 
{
	if ( partition_new .strict || calculate_exact_geom( partition_old, partition_new, operationdetail ) )
	{
		if ( partition_old .type == TYPE_EXTENDED )
			return resize_move_partition( partition_old, partition_new, operationdetail ) ;

		if ( partition_new .sector_start == partition_old .sector_start )
			return resize( partition_old, partition_new, operationdetail ) ;

		if ( partition_new .get_length() == partition_old .get_length() )
			return move( device, partition_old, partition_new, operationdetail ) ;

		Partition temp ;
		if ( partition_new .get_length() > partition_old .get_length() )
		{
			//first move, then grow. Since old.length < new.length and new.start is valid, temp is valid.
			temp = partition_new ;
			temp .sector_end = temp .sector_start + partition_old .get_length() -1 ;
		}

		if ( partition_new .get_length() < partition_old .get_length() )
		{
			//first shrink, then move. Since new.length < old.length and old.start is valid, temp is valid.
			temp = partition_old ;
			temp .sector_end = partition_old .sector_start + partition_new .get_length() -1 ;
		}

		temp .strict = true ;
		bool succes = resize_move( device, partition_old, temp, operationdetail ) ;
		temp .strict = false ;

		return succes && resize_move( device, temp, partition_new, operationdetail ) ;
	}

	return false ;
}

bool GParted_Core::move( const Device & device,
			 const Partition & partition_old,
		   	 const Partition & partition_new,
		   	 OperationDetail & operationdetail ) 
{
	if ( partition_old .get_length() != partition_new .get_length() )
	{	
		operationdetail .add_child( OperationDetail( 
			_("moving requires old and new length to be the same"), STATUS_ERROR, FONT_ITALIC ) ) ;

		return false ;
	}

	bool succes = false ;
	if ( check_repair_filesystem( partition_old, operationdetail ) )
	{
		//NOTE: logical partitions are preceeded by metadata. To prevent this metadata from being
		//overwritten we move the partition first and only then the filesystem when moving to the left.
		//(maybe i should do some reading on how non-msdos disklabels deal with metadata....)
		if ( partition_new .sector_start < partition_old .sector_start )
		{
	       		if ( resize_move_partition( partition_old, partition_new, operationdetail ) )
	       	   	{
				if ( ! move_filesystem( partition_old, partition_new, operationdetail ) )
				{
					operationdetail .add_child( OperationDetail( _("rollback last change to the partitiontable") ) ) ;

					if ( resize_move_partition( partition_new, partition_old, operationdetail .get_last_child() ) )
						operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ;
					else
						operationdetail .get_last_child() .set_status( STATUS_ERROR ) ;
				}
				else
					succes = true ;
			}
		}
		else
	       		succes = move_filesystem( partition_old, partition_new, operationdetail ) &&
	       			 resize_move_partition( partition_old, partition_new, operationdetail ) ;

		succes = succes &&
			 update_bootsector( partition_new, operationdetail ) &&
	       		 check_repair_filesystem( partition_new, operationdetail ) &&
	       		 maximize_filesystem( partition_new, operationdetail ) ;
	}

	return succes ;
}

bool GParted_Core::move_filesystem( const Partition & partition_old,
		   		    const Partition & partition_new,
				    OperationDetail & operationdetail ) 
{
	if ( partition_new .sector_start < partition_old .sector_start )
		operationdetail .add_child( OperationDetail( _("move filesystem to the left") ) ) ;
	else if ( partition_new .sector_start > partition_old .sector_start )
		operationdetail .add_child( OperationDetail( _("move filesystem to the right") ) ) ;
	else
	{
		operationdetail .add_child( OperationDetail( _("move filesystem") ) ) ;
		operationdetail .get_last_child() .add_child( 
			OperationDetail( _("new and old filesystem have the same positition. skipping this operation"),
					 STATUS_NONE,
					 FONT_ITALIC ) ) ;

		operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ;
		return true ;
	}

	bool succes = false ;
	switch ( get_fs( partition_old .filesystem ) .move )
	{
		case GParted::FS::NONE:
			break ;
		case GParted::FS::GPARTED:
			succes = false ;
			if ( partition_new .test_overlap( partition_old ) )
			{
				if ( copy_filesystem_simulation( partition_old, partition_new, operationdetail .get_last_child() ) )
				{
					operationdetail .get_last_child() .add_child( OperationDetail( _("perform real move") ) ) ;
					
					Sector total_done ;
					succes = copy_filesystem( partition_old,
								  partition_new,
								  operationdetail .get_last_child() .get_last_child(),
								  total_done ) ;
					
					operationdetail .get_last_child() .get_last_child() 
						.set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
					if ( ! succes )
					{
						rollback_transaction( partition_old,
								      partition_new,
								      operationdetail .get_last_child(),
								      total_done ) ;

						check_repair_filesystem( partition_old, operationdetail ) ;
					}
				}
			}
			else
				succes = copy_filesystem( partition_old, partition_new, operationdetail .get_last_child() ) ;

			break ;
		case GParted::FS::LIBPARTED:
			succes = resize_move_filesystem_using_libparted( partition_old,
									 partition_new,
								  	 operationdetail .get_last_child() ) ;
			break ;
		case GParted::FS::EXTERNAL:
			break ;
	}

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}

bool GParted_Core::resize_move_filesystem_using_libparted( const Partition & partition_old,
		  	      		            	   const Partition & partition_new,
						    	   OperationDetail & operationdetail ) 
{
	operationdetail .add_child( OperationDetail( _("using libparted"), STATUS_NONE ) ) ;

	bool return_value = false ;
	if ( open_device_and_disk( partition_old .device_path ) )
	{
		PedFileSystem *	fs = NULL ;
		PedGeometry * lp_geom = NULL ;	
		
		lp_geom = ped_geometry_new( lp_device,
					    partition_old .sector_start,
					    partition_old .get_length() ) ;
		if ( lp_geom )
		{
			fs = ped_file_system_open( lp_geom );
			if ( fs )
			{
				lp_geom = NULL ;
				lp_geom = ped_geometry_new( lp_device,
							    partition_new .sector_start,
							    partition_new .get_length() ) ;
				if ( lp_geom )
					return_value = ped_file_system_resize( fs, lp_geom, NULL ) && commit() ;

				ped_file_system_close( fs );
			}
		}

		close_device_and_disk() ;
	}

	return return_value ;
}

bool GParted_Core::resize( const Partition & partition_old, 
			   const Partition & partition_new,
			   OperationDetail & operationdetail )
{
	if ( partition_old .sector_start != partition_new .sector_start )
	{	
		operationdetail .add_child( OperationDetail( 
			_("resizing requires old and new start to be the same"), STATUS_ERROR, FONT_ITALIC ) ) ;

		return false ;
	}

	bool succes = false ;
	if ( check_repair_filesystem( partition_new, operationdetail ) )
	{
		succes = true ;

		if ( succes && partition_new .get_length() < partition_old .get_length() )
			succes = resize_filesystem( partition_old, partition_new, operationdetail ) ;
						
		if ( succes )
			succes = resize_move_partition( partition_old, partition_new, operationdetail ) ;
			
		//these 2 are always executed, however, if 1 of them fails the whole operation fails
		if ( ! check_repair_filesystem( partition_new, operationdetail ) )
			succes = false ;

		//expand filesystem to fit exactly in partition
		if ( ! maximize_filesystem( partition_new, operationdetail ) )
			succes = false ;
			
		return succes ;
	}
		
	return false ;
}

bool GParted_Core::resize_move_partition( const Partition & partition_old,
				     	  const Partition & partition_new,
					  OperationDetail & operationdetail )
{
	//i'm not too happy with this, but i think it is the correct way from a i18n POV
	enum Action
	{
		NONE			= 0,
		MOVE_RIGHT	 	= 1,
		MOVE_LEFT		= 2,
		GROW 			= 3,
		SHRINK			= 4,
		MOVE_RIGHT_GROW		= 5,
		MOVE_RIGHT_SHRINK	= 6,
		MOVE_LEFT_GROW		= 7,
		MOVE_LEFT_SHRINK	= 8
	} ;
	Action action = NONE ;

	if ( partition_new .get_length() > partition_old .get_length() )
		action = GROW ;
	else if ( partition_new .get_length() < partition_old .get_length() )
		action = SHRINK ;

	if ( partition_new .sector_start > partition_old .sector_start &&
	     partition_new .sector_end > partition_old .sector_end )
		action = action == GROW ? MOVE_RIGHT_GROW : action == SHRINK ? MOVE_RIGHT_SHRINK : MOVE_RIGHT ;
	else if ( partition_new .sector_start < partition_old .sector_start &&
	     partition_new .sector_end < partition_old .sector_end )
		action = action == GROW ? MOVE_LEFT_GROW : action == SHRINK ? MOVE_LEFT_SHRINK : MOVE_LEFT ;

	Glib::ustring description ;	
	switch ( action )
	{
		case NONE		:
			description = _("resize/move partition") ;
			break ;
		case MOVE_RIGHT		:
			description = _("move partition to the right") ;
			break ;
		case MOVE_LEFT		:
			description = _("move partition to the left") ;
			break ;
		case GROW 		:
			description = _("grow partition from %1 to %2") ;
			break ;
		case SHRINK		:
			description = _("shrink partition from %1 to %2") ;
			break ;
		case MOVE_RIGHT_GROW	:
			description = _("move partition to the right and grow it from %1 to %2") ;
			break ;
		case MOVE_RIGHT_SHRINK	:
			description = _("move partition to the right and shrink it from %1 to %2") ;
			break ;
		case MOVE_LEFT_GROW	:
			description = _("move partition to the left and grow it from %1 to %2") ;
			break ;
		case MOVE_LEFT_SHRINK	:
			description = _("move partition to the left and shrink it from %1 to %2") ;
			break ;
	}

	if ( ! description .empty() && action != NONE && action != MOVE_LEFT && action != MOVE_RIGHT )
		description = String::ucompose( description,
						Utils::format_size( partition_old .get_length() ),
						Utils::format_size( partition_new .get_length() ) ) ;

	operationdetail .add_child( OperationDetail( description ) ) ;

	
	if ( action == NONE )
	{
		operationdetail .get_last_child() .add_child( 
			OperationDetail( _("new and old partition have the same size and position. skipping this operation"),
					  STATUS_NONE,
					  FONT_ITALIC ) ) ;

		operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ;
		return true ;
	}

	operationdetail .get_last_child() .add_child( 
		OperationDetail(
			String::ucompose( _("old start: %1"), partition_old .sector_start ) + "\n" +
			String::ucompose( _("old end: %1"), partition_old .sector_end ) + "\n" +
			String::ucompose( _("old size: %1 (%2)"),
					  partition_old .get_length(),
					  Utils::format_size( partition_old .get_length() ) ),
		STATUS_NONE, 
		FONT_ITALIC ) ) ;
	
	//finally the actual resize/move
	bool return_value = false ;
	
	PedConstraint *constraint = NULL ;
	lp_partition = NULL ;

	//sometimes the lp_partition ->geom .start,end and length values display random numbers
	//after going out of the 'if ( lp_partition)' scope. That's why we use some variables here.
	Sector new_start = -1, new_end = -1 ;
		
	if ( open_device_and_disk( partition_old .device_path ) )
	{
		if ( partition_old .type == GParted::TYPE_EXTENDED )
			lp_partition = ped_disk_extended_partition( lp_disk ) ;
		else		
			lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition_old .get_sector() ) ;
		
		if ( lp_partition )
		{
			PedGeometry *geom = ped_geometry_new( lp_device,
							      partition_new .sector_start,
							      partition_new .get_length() ) ;
			constraint = ped_constraint_exact( geom ) ;

			if ( constraint )
			{
				if ( ped_disk_set_partition_geom( lp_disk,
								  lp_partition,
								  constraint,
								  partition_new .sector_start,
								  partition_new .sector_end ) )
				{
					new_start = lp_partition ->geom .start ;
					new_end = lp_partition ->geom .end ;

					return_value = commit() ;
				}
									
				ped_constraint_destroy( constraint );
			}
		}
		
		close_device_and_disk() ;
	}
	
	if ( return_value )
	{
		operationdetail .get_last_child() .add_child( 
			OperationDetail(
				String::ucompose( _("new start: %1"), new_start ) + "\n" +
				String::ucompose( _("new end: %1"), new_end ) + "\n" +
				String::ucompose( _("new size: %1 (%2)"),
					 	  new_end - new_start + 1,
					  	  Utils::format_size( new_end - new_start + 1 ) ),
			STATUS_NONE, 
			FONT_ITALIC ) ) ;
	}
	
	operationdetail .get_last_child() .set_status( return_value ? STATUS_SUCCES : STATUS_ERROR ) ;
	
	return return_value ;
}

bool GParted_Core::resize_filesystem( const Partition & partition_old,
				      const Partition & partition_new,
				      OperationDetail & operationdetail,
				      bool fill_partition ) 
{
	//by default 'grow' to accomodate expand_filesystem()
	GParted::FS::Support action = get_fs( partition_old .filesystem ) .grow ;

	if ( ! fill_partition )
	{
		if ( partition_new .get_length() < partition_old .get_length() )
		{
			operationdetail .add_child( OperationDetail( _("shrink filesystem") ) ) ;
			action = get_fs( partition_old .filesystem ) .shrink ;
		}
		else if ( partition_new .get_length() > partition_old .get_length() )
			operationdetail .add_child( OperationDetail( _("grow filesystem") ) ) ;
		else
		{
			operationdetail .add_child( OperationDetail( _("resize filesystem") ) ) ;
			operationdetail .get_last_child() .add_child( 
				OperationDetail( 
					_("new and old filesystem have the same size. skipping this operation"),
					STATUS_NONE,
					FONT_ITALIC ) ) ;
		
			operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ;
			return true ;
		}
	}

	bool succes = false ;
	switch ( action )
	{
		case GParted::FS::NONE:
			break ;
		case GParted::FS::GPARTED:
			break ;
		case GParted::FS::LIBPARTED:
			succes = resize_move_filesystem_using_libparted( partition_old,
									 partition_new,
								  	 operationdetail .get_last_child() ) ;
			break ;
		case GParted::FS::EXTERNAL:
			succes = set_proper_filesystem( partition_new .filesystem ) && 
				 p_filesystem ->resize( partition_new,
							operationdetail .get_last_child(), 
							fill_partition ) ;
			break ;
	}

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}
	
bool GParted_Core::maximize_filesystem( const Partition & partition, OperationDetail & operationdetail ) 
{
	operationdetail .add_child( OperationDetail( _("grow filesystem to fill the partition") ) ) ;

	if ( get_fs( partition .filesystem ) .grow == GParted::FS::NONE )
	{
		operationdetail .get_last_child() .add_child( 
			OperationDetail( _("growing is not available for this filesystem"),
					  STATUS_NONE,
					  FONT_ITALIC ) ) ;

		operationdetail .get_last_child() .set_status( STATUS_N_A ) ;
		return true ;
	}
	
	return resize_filesystem( partition, partition, operationdetail, true ) ;
}

bool GParted_Core::copy( const Partition & partition_src,
			 Partition & partition_dst,
			 Sector min_size,
			 OperationDetail & operationdetail ) 
{
	if ( partition_dst .get_length() < partition_src .get_length() )
	{	
		operationdetail .add_child( OperationDetail( 
			_("the destination is smaller than the sourcepartition"), STATUS_ERROR, FONT_ITALIC ) ) ;

		return false ;
	}

	if ( check_repair_filesystem( partition_src, operationdetail ) )
	{
		bool succes = true ;
		if ( partition_dst .status == GParted::STAT_COPY )
			succes = create_partition( partition_dst, operationdetail, min_size ) ;

		if ( succes && set_partition_type( partition_dst, operationdetail ) )
		{
			operationdetail .add_child( OperationDetail( 
				String::ucompose( _("copy filesystem of %1 to %2"),
						  partition_src .get_path(),
						  partition_dst .get_path() ) ) ) ;
						
			switch ( get_fs( partition_dst .filesystem ) .copy )
			{
				case GParted::FS::GPARTED :
						succes = copy_filesystem( partition_src,
									  partition_dst,
									  operationdetail .get_last_child() ) ;
						break ;
				
				case GParted::FS::LIBPARTED :
						//FIXME: see if copying through libparted has any advantages
						break ;

				case GParted::FS::EXTERNAL :
						succes = set_proper_filesystem( partition_dst .filesystem ) &&
							 p_filesystem ->copy( partition_src .get_path(),
								     	      partition_dst .get_path(),
									      operationdetail .get_last_child() ) ;
						break ;

				default :
						succes = false ;
						break ;
			}

			operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;

			return succes &&	
	       		       update_bootsector( partition_dst, operationdetail ) &&
			       check_repair_filesystem( partition_dst, operationdetail ) &&
			       maximize_filesystem( partition_dst, operationdetail ) ;
		}
	}

	return false ;
}

bool GParted_Core::copy_filesystem_simulation( const Partition & partition_src,
				      	       const Partition & partition_dst,
			      		       OperationDetail & operationdetail ) 
{
	operationdetail .add_child( OperationDetail( _("perform readonly test") ) ) ;
	
	bool succes = copy_filesystem( partition_src, partition_dst, operationdetail .get_last_child(), true ) ;

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}

bool GParted_Core::copy_filesystem( const Partition & partition_src,
				    const Partition & partition_dst,
				    OperationDetail & operationdetail,
				    bool readonly )
{
	Sector dummy ;
	return copy_filesystem( partition_src .device_path,
				partition_dst .device_path,
				partition_src .sector_start,
				partition_dst .sector_start,
				partition_src .get_length(),
				operationdetail,
				readonly,
				dummy ) ;
}

bool GParted_Core::copy_filesystem( const Partition & partition_src,
			      	    const Partition & partition_dst,
			      	    OperationDetail & operationdetail,
			      	    Sector & total_done ) 
{
	return copy_filesystem( partition_src .device_path,
				partition_dst .device_path,
				partition_src .sector_start,
				partition_dst .sector_start,
				partition_src .get_length(),
				operationdetail,
				false,
				total_done ) ;
}
	
bool GParted_Core::copy_filesystem( const Glib::ustring & src_device,
			      	    const Glib::ustring & dst_device,
			      	    Sector src_start,
			      	    Sector dst_start,
			      	    Sector length,
			      	    OperationDetail & operationdetail,
			      	    bool readonly,
				    Sector & total_done ) 
{
	operationdetail .add_child( OperationDetail( _("using internal algorithm"), STATUS_NONE ) ) ;
	operationdetail .add_child( OperationDetail( 
		String::ucompose( readonly ? _("read %1 sectors") : _("copy %1 sectors"), length ), STATUS_NONE ) ) ;

	operationdetail .add_child( OperationDetail( _("finding optimal blocksize"), STATUS_NONE ) ) ;

	Sector optimal_blocksize = readonly ? 128 : 64, N = 32768 ;
	Sector offset_read = src_start,
	       offset_write = dst_start ;

	if ( dst_start > src_start )
	{
		offset_read += (length -N) ;
		offset_write += (length -N) ;
	}

	total_done = 0 ;
	Sector done = 0 ;
	Glib::Timer timer ;
	double smallest_time = 1000000 ;
	bool succes = true ;

	while ( succes &&
		timer .elapsed() <= smallest_time && 
		std::llabs( done ) + N <= length && 
		optimal_blocksize * 2 < N )
	{
		if ( done != 0 ) 
		{
			smallest_time = timer .elapsed() ;
			optimal_blocksize *= 2 ;
		}

		timer .reset() ;
		succes = copy_blocks( src_device, 
	  		     	      dst_device,
			     	      offset_read + done, 
			     	      offset_write + done,
			     	      N, 
			     	      optimal_blocksize,
			     	      operationdetail .get_last_child(),
				      readonly,
				      total_done ) ;
		timer.stop() ;

		operationdetail .get_last_child() .get_last_child() .add_child( OperationDetail( 
			String::ucompose( _("%1 seconds"), timer .elapsed() ), STATUS_NONE, FONT_ITALIC ) ) ;
		
		if ( ( dst_start > src_start ) )
			done -= N ;
		else
			done += N ;
	}
	
	if ( timer .elapsed() > smallest_time )
		optimal_blocksize /= 2 ;
	
	if ( succes )
		operationdetail .get_last_child() .add_child( OperationDetail( String::ucompose( _("optimal blocksize is %1 sectors (%2)"),
					 							 optimal_blocksize,
					 							 Utils::format_size( optimal_blocksize ) ),
									       STATUS_NONE ) ) ;

	if ( succes ) 
	      succes = copy_blocks( src_device, 
		      	    	    dst_device,
		      	    	    src_start + ( dst_start > src_start ? 0 : done ),
		      	    	    dst_start + ( dst_start > src_start ? 0 : done ),
		      	    	    length - std::llabs( done ), 
		      	    	    optimal_blocksize,
		      	    	    operationdetail,
			    	    readonly,
			    	    total_done ) ;

	operationdetail .add_child( OperationDetail( 
		String::ucompose( readonly ? _("%1 sectors read") : _("%1 sectors copied"), total_done ), STATUS_NONE ) ) ;
	return succes ;
}

void GParted_Core::rollback_transaction( const Partition & partition_src,
			      	   	 const Partition & partition_dst,
			      	   	 OperationDetail & operationdetail,
			      	   	 Sector total_done ) 
{
	if ( total_done > 0 )
	{
		operationdetail .add_child( OperationDetail( _("rollback last transaction") ) ) ;

		//find out exactly which part of the filesystem was copied (and to where it was copied)..
		Partition temp_src = partition_src ;
		Partition temp_dst = partition_dst ;

		if ( partition_dst .sector_start > partition_src .sector_start )
		{
			temp_src .sector_start = temp_src .sector_end - (total_done-1) ;
			temp_dst .sector_start = temp_dst .sector_end - (total_done-1) ;
		}
		else
		{
			temp_src .sector_end = temp_src .sector_start + (total_done -1) ;
			temp_dst .sector_end = temp_dst .sector_start + (total_done -1) ;
		}
		
		//and copy it back (NOTE the reversed dst and src)
		bool succes = copy_filesystem( temp_dst, temp_src, operationdetail .get_last_child() ) ;

		operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	}
}
	
bool GParted_Core::check_repair_filesystem( const Partition & partition, OperationDetail & operationdetail ) 
{
	operationdetail .add_child( OperationDetail( 
				String::ucompose( _("check filesystem on %1 for errors and (if possible) fix them"),
						  partition .get_path() ) ) ) ;
	
	bool succes = false ;
	switch ( get_fs( partition .filesystem ) .check )
	{
		case GParted::FS::NONE:
			operationdetail .get_last_child() .add_child(
				OperationDetail( _("checking is not available for this filesystem"),
						 STATUS_NONE,
						 FONT_ITALIC ) ) ;

			operationdetail .get_last_child() .set_status( STATUS_N_A ) ;
			return true ;	

			break ;
		case GParted::FS::GPARTED:
			break ;
		case GParted::FS::LIBPARTED:
			break ;
		case GParted::FS::EXTERNAL:
			succes = set_proper_filesystem( partition .filesystem ) &&
				 p_filesystem ->check_repair( partition, operationdetail .get_last_child() ) ;

			break ;
	}

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}

bool GParted_Core::set_partition_type( const Partition & partition, OperationDetail & operationdetail )
{
	operationdetail .add_child( OperationDetail(
				String::ucompose( _("set partitiontype on %1"), partition .get_path() ) ) ) ;
	
	bool return_value = false ;
	
	if ( open_device_and_disk( partition .device_path ) )
	{
		PedFileSystemType * fs_type = 
			ped_file_system_type_get( Utils::get_filesystem_string( partition .filesystem ) .c_str() ) ;

		//default is Linux (83)
		if ( ! fs_type )
			fs_type = ped_file_system_type_get( "ext2" ) ;

		if ( fs_type )
		{
			lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;

			if ( lp_partition &&
			     ped_partition_set_system( lp_partition, fs_type ) && 
			     commit() )
			{
				operationdetail .get_last_child() .add_child( 
					OperationDetail( String::ucompose( _("new partitiontype: %1"),
									   lp_partition ->fs_type ->name ),
							 STATUS_NONE,
							 FONT_ITALIC ) ) ;

				return_value = true ;
			}
		}

		close_device_and_disk() ;
	}

	operationdetail .get_last_child() .set_status( return_value ? STATUS_SUCCES : STATUS_ERROR ) ;
	return return_value ;
}
	
void GParted_Core::set_progress_info( Sector total,
				      Sector done,
				      const Glib::Timer & timer,
				      OperationDetail & operationdetail,
				      bool readonly ) 
{
	operationdetail .fraction = done / static_cast<double>( total ) ;

	std::time_t time_remaining = Utils::round( (total - done) / ( done / timer .elapsed() ) ) ;

	operationdetail .progress_text = 
		String::ucompose( readonly ? _("%1 of %2 read (%3 remaining)") : _("%1 of %2 copied (%3 remaining)"),
				  Utils::format_size( done ),
				  Utils::format_size( total ),
				  Utils::format_time( time_remaining) ) ; 
			
	operationdetail .set_description( 
		String::ucompose( readonly ? _("%1 of %2 read") : _("%1 of %2 copied"), done, total ), FONT_ITALIC ) ;
}
	
bool GParted_Core::copy_blocks( const Glib::ustring & src_device,
			  	const Glib::ustring & dst_device,
			  	Sector src_start,
			  	Sector dst_start,
				Sector length,
			  	Sector blocksize,
			  	OperationDetail & operationdetail,
				bool readonly,
				Sector & total_done ) 
{
	if ( blocksize > length )
		blocksize = length ;

	if ( readonly )
		operationdetail .add_child( OperationDetail( 
			String::ucompose( _("read %1 sectors using a blocksize of %2 sectors"), length, blocksize ) ) ) ;
	else
		operationdetail .add_child( OperationDetail( 
			String::ucompose( _("copy %1 sectors using a blocksize of %2 sectors"), length, blocksize ) ) ) ;
	
	Sector done = length % blocksize ; 

	if ( dst_start > src_start )
	{
		blocksize -= 2*blocksize ;
		done -= 2*done ;
		src_start += (length -1) ;
		dst_start += (length -1) ;
	}

	bool succes = false ;
	PedDevice *lp_device_src = ped_device_get( src_device .c_str() );
	PedDevice *lp_device_dst = src_device != dst_device ? ped_device_get( dst_device .c_str() ) : lp_device_src ;

	if ( lp_device_src && lp_device_dst && ped_device_open( lp_device_src ) && ped_device_open( lp_device_dst ) )
	{
		Glib::ustring error_message ;
		buf = static_cast<char *>( malloc( std::llabs( blocksize ) * 512 ) ) ;
		if ( buf )
		{
			ped_device_sync( lp_device_dst ) ;

			succes = true ;
        		if ( done != 0 )
        		    succes = copy_block( lp_device_src,
				        	 lp_device_dst,
				        	 src_start,
				        	 dst_start, 
				        	 done,
				        	 error_message,
						 readonly ) ;
			if ( ! succes )
				done = 0 ;

			//add an empty sub which we will constantly update in the loop
			operationdetail .get_last_child() .add_child( OperationDetail( "", STATUS_NONE ) ) ;
			
			Glib::Timer timer_progress_timeout, timer_total ;
			while( succes && std::llabs( done ) < length )
			{
				succes = copy_block( lp_device_src,
						     lp_device_dst,
						     src_start +done,
						     dst_start +done, 
						     blocksize,
						     error_message,
						     readonly ) ; 
				if ( succes )
					done += blocksize ;

				if ( timer_progress_timeout .elapsed() >= 0.5 )
				{
					set_progress_info( length,
							   std::llabs( done + blocksize ),
							   timer_total,
							   operationdetail .get_last_child() .get_last_child(),
							   readonly ) ;
			
					timer_progress_timeout .reset() ;
				}
			}
			
			free( buf ) ;
		}
		else
			error_message = Glib::strerror( errno ) ;

		//reset fraction to -1 to make room for a new one (or a pulsebar)
		operationdetail .get_last_child() .get_last_child() .fraction = -1 ;

		//final description
		operationdetail .get_last_child() .get_last_child() .set_description( 
			String::ucompose( readonly ? _("%1 of %2 read") : _("%1 of %2 copied"), std::llabs( done ), length ), FONT_ITALIC ) ;
		
		if ( ! succes && ! error_message .empty() )
			operationdetail .get_last_child() .add_child( 
				OperationDetail( error_message, STATUS_NONE, FONT_ITALIC ) ) ;
		
		total_done += std::llabs( done ) ;
	
		//close and destroy the devices..
		ped_device_close( lp_device_src ) ;
		ped_device_destroy( lp_device_src ) ; 

		if ( src_device != dst_device )
		{
			ped_device_close( lp_device_dst ) ;
			ped_device_destroy( lp_device_dst ) ;
		}
	}

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}

bool GParted_Core::copy_block( PedDevice * lp_device_src,
			       PedDevice * lp_device_dst,
			       Sector offset_src,
			       Sector offset_dst,
			       Sector blocksize,
			       Glib::ustring & error_message,
			       bool readonly ) 
{
	if ( blocksize < 0 )
	{
		blocksize = std::llabs( blocksize ) ;
		offset_src -= ( blocksize -1 ) ;
		offset_dst -= ( blocksize -1 ) ;
	}

	if ( blocksize != 0 )
	{
		if ( ped_device_read( lp_device_src, buf, offset_src, blocksize ) )
		{
			if ( readonly || ped_device_write( lp_device_dst, buf, offset_dst, blocksize ) )
				return true ;	
			else
				error_message = String::ucompose( _("Error while writing block at sector %1"), offset_dst ) ;
		}
		else
			error_message = String::ucompose( _("Error while reading block at sector %1"), offset_src ) ;
	}

	return false ;
}
	
bool GParted_Core::calibrate_partition( Partition & partition, OperationDetail & operationdetail ) 
{
	if ( partition .type == TYPE_PRIMARY || partition .type == TYPE_LOGICAL || partition .type == TYPE_EXTENDED )
	{
		operationdetail .add_child( OperationDetail( String::ucompose( _("calibrate %1"), partition .get_path() ) ) ) ;
	
		bool succes = false ;
		if ( open_device_and_disk( partition .device_path ) )
		{	
			if ( partition .type == GParted::TYPE_EXTENDED )
				lp_partition = ped_disk_extended_partition( lp_disk ) ;
			else	
				lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;
		
			if ( lp_partition )//FIXME: add check to see if lp_partition ->type matches partition .type..
			{
				char * lp_path = ped_partition_get_path( lp_partition ) ;
				partition .add_path( lp_path, true ) ;
				free( lp_path ) ;

				partition .sector_start = lp_partition ->geom .start ;
				partition .sector_end = lp_partition ->geom .end ;

				operationdetail .get_last_child() .add_child( 
					OperationDetail(
						String::ucompose( _("path: %1"), partition .get_path() ) + "\n" +
						String::ucompose( _("start: %1"), partition .sector_start ) + "\n" +
						String::ucompose( _("end: %1"), partition .sector_end ) + "\n" +
						String::ucompose( _("size: %1 (%2)"),
								  partition .get_length(),
								  Utils::format_size( partition .get_length() ) ),
					STATUS_NONE, 
					FONT_ITALIC ) ) ;
				succes = true ;
			}

			close_device_and_disk() ;
		}

		operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
		return succes ;
	}
	else //nothing to calibrate...
		return true ;
}

bool GParted_Core::calculate_exact_geom( const Partition & partition_old,
			       	         Partition & partition_new,
				         OperationDetail & operationdetail ) 
{
	operationdetail .add_child( OperationDetail( 
		String::ucompose( _("calculate new size and position of %1"), partition_new .get_path() ) ) ) ;

	operationdetail .get_last_child() .add_child( 
		OperationDetail(
			String::ucompose( _("requested start: %1"), partition_new .sector_start ) + "\n" +
			String::ucompose( _("requested end: %1"), partition_new .sector_end ) + "\n" +
			String::ucompose( _("requested size: %1 (%2)"),
					  partition_new .get_length(),
					  Utils::format_size( partition_new .get_length() ) ),
		STATUS_NONE,
		FONT_ITALIC ) ) ;
	
	bool succes = false ;
	if ( open_device_and_disk( partition_old .device_path ) )
	{
		lp_partition = NULL ;

		if ( partition_old .type == GParted::TYPE_EXTENDED )
			lp_partition = ped_disk_extended_partition( lp_disk ) ;
		else		
			lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition_old .get_sector() ) ;

		if ( lp_partition )
		{
			PedConstraint *constraint = NULL ;
			constraint = ped_constraint_any( lp_device ) ;
			
			if ( constraint )
			{
				//FIXME: if we insert a weird partitionnew geom here (e.g. start > end) 
				//ped_disk_set_partition_geom() will still return true (althoug an lp exception is written
				//to stdout.. see if this also affect create_partition and resize_move_partition
				//sended a patch to fix this to libparted list. will probably be in 1.7.2
				if ( ped_disk_set_partition_geom( lp_disk,
								  lp_partition,
								  constraint,
								  partition_new .sector_start,
								  partition_new .sector_end ) )
				{
					partition_new .sector_start = lp_partition ->geom .start ;
					partition_new .sector_end = lp_partition ->geom .end ;
					succes = true ;
				}
					
				ped_constraint_destroy( constraint );
			}
		}

		close_device_and_disk() ;	
	}

	if ( succes ) 
	{
		operationdetail .get_last_child() .add_child( 
			OperationDetail(
				String::ucompose( _("new start: %1"), partition_new .sector_start ) + "\n" +
				String::ucompose( _("new end: %1"), partition_new .sector_end ) + "\n" +
				String::ucompose( _("new size: %1 (%2)"),
					 	  partition_new .get_length(),
					  	  Utils::format_size( partition_new .get_length() ) ),
			STATUS_NONE,
			FONT_ITALIC ) ) ;
	}

	operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
	return succes ;
}

bool GParted_Core::set_proper_filesystem( const FILESYSTEM & filesystem )
{
	if ( p_filesystem )
		delete p_filesystem ;
		
	switch( filesystem )
	{
		case FS_EXT2		: p_filesystem = new ext2() ;	 	break ;
		case FS_EXT3		: p_filesystem = new ext3() ; 		break ;
		case FS_LINUX_SWAP	: p_filesystem = new linux_swap() ; 	break ;
		case FS_FAT16		: p_filesystem = new fat16() ; 		break ;
		case FS_FAT32		: p_filesystem = new fat32() ; 		break ;
		case FS_NTFS		: p_filesystem = new ntfs() ; 		break ;
		case FS_REISERFS	: p_filesystem = new reiserfs() ; 	break ;
		case FS_REISER4		: p_filesystem = new reiser4() ;	break ;
		case FS_XFS		: p_filesystem = new xfs() ; 		break ;
		case FS_JFS		: p_filesystem = new jfs() ; 		break ;
		case FS_HFS		: p_filesystem = new hfs() ; 		break ;
		case FS_HFSPLUS		: p_filesystem = new hfsplus() ; 	break ;
		case FS_UFS		: p_filesystem = new ufs() ;	 	break ;

		default			: p_filesystem = NULL ;
	}

	return p_filesystem ;
}
	
bool GParted_Core::erase_filesystem_signatures( const Partition & partition ) 
{
	bool return_value = false ;
	
	if ( open_device_and_disk( partition .device_path ) )
	{
		lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;

		if ( lp_partition && ped_file_system_clobber( & lp_partition ->geom ) )
		{
			//filesystems not yet supported by libparted
			if ( ped_device_open( lp_device ) )
			{
				//reiser4 stores "ReIsEr4" at sector 128
				return_value = ped_geometry_write( & lp_partition ->geom, "0000000", 128, 1 ) ;

				ped_device_close( lp_device ) ;
			}
		}
		
		close_device_and_disk() ;	
	}

	return return_value ;
}
	
bool GParted_Core::update_bootsector( const Partition & partition, OperationDetail & operationdetail ) 
{
	//only for ntfs atm...
	//FIXME: 1) this should be done without relying on external commands
	//	 2) this should probably be done in the fsclasses...
	if ( partition .filesystem == FS_NTFS )
	{
		operationdetail .add_child( OperationDetail( 
			String::ucompose( _("updating bootsector of %1 filesystem on %2"),
					  Utils::get_filesystem_string( partition .filesystem ),
					  partition .get_path() ) ) ) ;

		std::stringstream ss ;
		ss << std::hex << partition .sector_start ;
		Glib::ustring hex = ss .str() ;
	
		//fill with zeros and reverse...
		hex .insert( 0, 8 - hex .length(), '0' ) ;
		Glib::ustring reversed_hex ;
		for ( int t = 6 ; t >= 0 ; t -=2 )
			reversed_hex .append( hex .substr( t, 2 ) ) ;

		Glib::ustring output, error, command ;
		command = 
			"echo " + reversed_hex + " | /usr/bin/xxd -r -p | /bin/dd conv=notrunc of=" + partition .get_path() + " bs=1 seek=28" ;

		operationdetail .get_last_child() .add_child( OperationDetail( command, STATUS_NONE, FONT_BOLD_ITALIC ) ) ;
		bool succes = ! Utils::execute_command( command, output, error ) ;

		if ( ! output .empty() )
			operationdetail .get_last_child() .get_last_child() .add_child( OperationDetail( output, STATUS_NONE, FONT_ITALIC ) ) ;
		
		if ( ! error .empty() )
			operationdetail .get_last_child() .get_last_child() .add_child( OperationDetail( error, STATUS_NONE, FONT_ITALIC ) ) ;

		operationdetail .get_last_child() .set_status( succes ? STATUS_SUCCES : STATUS_ERROR ) ;
		return succes ;
	}

	return true ;
}
	
bool GParted_Core::open_device( const Glib::ustring & device_path )
{
	lp_device = ped_device_get( device_path .c_str() );
	
	return lp_device ;
}
	
bool GParted_Core::open_device_and_disk( const Glib::ustring & device_path, bool strict ) 
{
	lp_device = NULL ;
	lp_disk = NULL ;

	if ( open_device( device_path ) )
	{
		lp_disk = ped_disk_new( lp_device );
	
		//if ! disk and writeable it's probably a HD without disklabel.
		//We return true here and deal with them in GParted_Core::get_devices
		if ( lp_disk || ( ! strict && ! lp_device ->read_only ) )
			return true ;
		
		close_device_and_disk() ;
	}

	return false ;
}

void GParted_Core::close_disk()
{
	if ( lp_disk )
		ped_disk_destroy( lp_disk ) ;
	
	lp_disk = NULL ;
}

void GParted_Core::close_device_and_disk()
{
	close_disk() ;

	if ( lp_device )
		ped_device_destroy( lp_device ) ;
		
	lp_device = NULL ;
}	

bool GParted_Core::commit() 
{
	bool succes = ped_disk_commit_to_dev( lp_disk ) ;
	
	commit_to_os( 10 ) ;

	return succes ;
}

bool GParted_Core::commit_to_os( std::time_t timeout ) 
{
	bool succes = ped_disk_commit_to_os( lp_disk ) ;

	if ( Glib::find_program_in_path( "udevsettle" ) .empty() )
		sleep( timeout ) ;
	else
		Utils::execute_command( "udevsettle --timeout=" + Utils::num_to_str( timeout ) ) ;

	return succes ;
}
	
PedExceptionOption GParted_Core::ped_exception_handler( PedException * e ) 
{
        std::cout << e ->message << std::endl ;

        libparted_messages .push_back( e->message ) ;

	return PED_EXCEPTION_UNHANDLED ;
}

GParted_Core::~GParted_Core() 
{
	if ( p_filesystem )
		delete p_filesystem ;
}
	
} //GParted