212 lines
6.4 KiB
C++
212 lines
6.4 KiB
C++
/* Copyright (C) 2004 Bart
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* Copyright (C) 2008, 2009, 2010, 2011 Curtis Gedak
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "../include/ext2.h"
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namespace GParted
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{
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FS ext2::get_filesystem_support()
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{
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FS fs ;
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fs .filesystem = specific_type;
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//Only enable any functionality if the relevant mkfs.extX command is
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// found to ensure that the version of e2fsprogs is new enough to
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// support ext4. Applying to ext2/3 too is OK as relevant mkfs.ext2/3
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// commands exist.
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if ( ! Glib::find_program_in_path( "mkfs." + Utils::get_filesystem_string( specific_type ) ).empty() )
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{
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fs .create = FS::EXTERNAL ;
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fs .create_with_label = FS::EXTERNAL ;
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if ( ! Glib::find_program_in_path( "dumpe2fs" ) .empty() )
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fs .read = FS::EXTERNAL ;
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if ( ! Glib::find_program_in_path( "tune2fs" ) .empty() ) {
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fs .read_uuid = FS::EXTERNAL ;
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fs .write_uuid = FS::EXTERNAL ;
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}
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if ( ! Glib::find_program_in_path( "e2label" ) .empty() ) {
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fs .read_label = FS::EXTERNAL ;
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fs .write_label = FS::EXTERNAL ;
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}
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if ( ! Glib::find_program_in_path( "e2fsck" ) .empty() )
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fs .check = FS::EXTERNAL ;
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if ( ! Glib::find_program_in_path( "resize2fs" ) .empty() && fs .check )
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{
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fs .grow = FS::EXTERNAL ;
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if ( fs .read ) //needed to determine a min file system size..
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fs .shrink = FS::EXTERNAL ;
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}
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if ( fs .check )
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{
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fs .copy = FS::GPARTED ;
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fs .move = FS::GPARTED ;
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}
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fs .online_read = FS::EXTERNAL ;
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#ifdef ENABLE_ONLINE_RESIZE
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if ( specific_type != FS_EXT2 && Utils::kernel_version_at_least( 3, 6, 0 ) )
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fs .online_grow = fs .grow ;
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#endif
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}
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return fs ;
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}
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void ext2::set_used_sectors( Partition & partition )
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{
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//Called when file system is unmounted *and* when mounted. Always read
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// the file system size from the on disk superblock using dumpe2fs to
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// avoid overhead subtraction. Read the free space from the kernel via
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// the statvfs() system call when mounted and from the superblock when
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// unmounted.
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if ( ! Utils::execute_command( "dumpe2fs -h " + partition .get_path(), output, error, true ) )
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{
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index = output .find( "Block count:" ) ;
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if ( index >= output .length() ||
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sscanf( output.substr( index ) .c_str(), "Block count: %Ld", &T ) != 1 )
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T = -1 ;
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index = output .find( "Block size:" ) ;
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if ( index >= output.length() ||
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sscanf( output.substr( index ) .c_str(), "Block size: %Ld", &S ) != 1 )
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S = -1 ;
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if ( T > -1 && S > -1 )
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T = Utils::round( T * ( S / double(partition .sector_size) ) ) ;
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if ( partition .busy )
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{
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Byte_Value ignored ;
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Byte_Value fs_free ;
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if ( Utils::get_mounted_filesystem_usage( partition .get_mountpoint(),
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ignored, fs_free, error ) == 0 )
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N = Utils::round( fs_free / double(partition .sector_size) ) ;
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else
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{
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N = -1 ;
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partition .messages .push_back( error ) ;
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}
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}
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else
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{
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index = output .find( "Free blocks:" ) ;
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if ( index >= output .length() ||
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sscanf( output.substr( index ) .c_str(), "Free blocks: %Ld", &N ) != 1 )
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N = -1 ;
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if ( N > -1 && S > -1 )
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N = Utils::round( N * ( S / double(partition .sector_size) ) ) ;
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}
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if ( T > -1 && N > -1 )
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partition .set_sector_usage( T, N ) ;
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}
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else
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{
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if ( ! output .empty() )
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partition .messages .push_back( output ) ;
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if ( ! error .empty() )
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partition .messages .push_back( error ) ;
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}
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}
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void ext2::read_label( Partition & partition )
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{
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if ( ! Utils::execute_command( "e2label " + partition .get_path(), output, error, true ) )
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{
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partition .set_label( Utils::trim( output ) ) ;
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}
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else
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{
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if ( ! output .empty() )
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partition .messages .push_back( output ) ;
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if ( ! error .empty() )
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partition .messages .push_back( error ) ;
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}
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}
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bool ext2::write_label( const Partition & partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "e2label " + partition .get_path() + " \"" + partition .get_label() + "\"", operationdetail ) ;
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}
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void ext2::read_uuid( Partition & partition )
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{
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if ( ! Utils::execute_command( "tune2fs -l " + partition .get_path(), output, error, true ) )
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{
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partition .uuid = Utils::regexp_label( output, "^Filesystem UUID:[[:blank:]]*(" RFC4122_NONE_NIL_UUID_REGEXP ")" ) ;
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}
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else
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{
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if ( ! output .empty() )
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partition .messages .push_back( output ) ;
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if ( ! error .empty() )
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partition .messages .push_back( error ) ;
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}
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}
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bool ext2::write_uuid( const Partition & partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "tune2fs -U random " + partition .get_path(), operationdetail ) ;
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}
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bool ext2::create( const Partition & new_partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "mkfs." + Utils::get_filesystem_string( specific_type ) +
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" -L \"" + new_partition.get_label() + "\" " + new_partition.get_path(),
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operationdetail,
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false,
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true );
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}
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bool ext2::resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition )
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{
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Glib::ustring str_temp = "resize2fs -p " + partition_new .get_path() ;
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if ( ! fill_partition )
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str_temp += " " + Utils::num_to_str( Utils::round( Utils::sector_to_unit(
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partition_new .get_sector_length(), partition_new .sector_size, UNIT_KIB ) ) ) + "K" ;
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return ! execute_command( str_temp, operationdetail ) ;
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}
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bool ext2::check_repair( const Partition & partition, OperationDetail & operationdetail )
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{
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exit_status = execute_command( "e2fsck -f -y -v -C 0 " + partition.get_path(), operationdetail,
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false, true );
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//exitstatus 256 isn't documented, but it's returned when the 'FILE SYSTEM IS MODIFIED'
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//this is quite normal (especially after a copy) so we let the function return true...
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return ( exit_status == 0 || exit_status == 1 || exit_status == 2 || exit_status == 256 ) ;
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}
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} //GParted
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