228 lines
7.3 KiB
C++
228 lines
7.3 KiB
C++
/* Copyright (C) 2004 Bart
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* Copyright (C) 2008, 2009, 2010 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 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "linux_swap.h"
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#include "BlockSpecial.h"
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#include "FileSystem.h"
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#include "Partition.h"
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#include <cerrno>
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#include <glibmm/miscutils.h>
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#include <glibmm/stringutils.h>
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#include <glibmm/shell.h>
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namespace GParted
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{
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const Glib::ustring & linux_swap::get_custom_text( CUSTOM_TEXT ttype, int index ) const
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{
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/*TO TRANSLATORS: these labels will be used in the partition menu */
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static const Glib::ustring activate_text = _( "_Swapon" ) ;
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static const Glib::ustring deactivate_text = _( "_Swapoff" ) ;
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static const Glib::ustring empty_text;
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switch ( ttype ) {
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case CTEXT_ACTIVATE_FILESYSTEM :
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return index == 0 ? activate_text : empty_text;
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case CTEXT_DEACTIVATE_FILESYSTEM :
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return index == 0 ? deactivate_text : empty_text;
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default :
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return empty_text;
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}
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}
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FS linux_swap::get_filesystem_support()
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{
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FS fs( FS_LINUX_SWAP );
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fs .busy = FS::GPARTED ;
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fs .read = FS::EXTERNAL ;
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fs .online_read = FS::EXTERNAL ;
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if ( ! Glib::find_program_in_path( "mkswap" ) .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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fs.grow = FS::EXTERNAL;
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fs.shrink = FS::EXTERNAL;
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fs.copy = FS::EXTERNAL;
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fs.move = FS::EXTERNAL;
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}
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if ( ! Glib::find_program_in_path( "swaplabel" ) .empty() )
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{
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fs .read_label = FS::EXTERNAL ;
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fs .write_label = FS::EXTERNAL ;
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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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return fs ;
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}
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void linux_swap::set_used_sectors( Partition & partition )
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{
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if ( partition .busy )
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{
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long long used_kib = -1;
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std::string line ;
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std::ifstream input( "/proc/swaps" ) ;
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if ( input )
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{
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BlockSpecial bs_path = BlockSpecial( partition.get_path() );
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while ( getline( input, line ) )
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{
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Glib::ustring filename = Utils::regexp_label( line, "^([[:graph:]]+)" );
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if ( bs_path == BlockSpecial( filename ) )
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{
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sscanf(line.c_str(), "%*s %*s %*d %lld", &used_kib);
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break ;
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}
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}
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input .close() ;
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}
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else
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{
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partition.push_back_message( "open(\"/proc/swaps\", O_RDONLY): " + Glib::strerror( errno ) );
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}
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if (used_kib > -1)
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{
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// Ignore swap space reported size to ignore 1 page format
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// overhead. Instead use partition size as sectors_fs_size so
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// reported used figure for active swap space starts from 0
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// upwards, matching what 'swapon -s' reports.
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Sector fs_size = partition.get_sector_length();
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Sector fs_used = used_kib * KIBIBYTE / partition.sector_size;
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Sector fs_free = fs_size - fs_used;
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partition.set_sector_usage(fs_size, fs_free);
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}
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}
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else
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{
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// By definition inactive swap space is 100% free.
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Sector fs_size = partition.get_sector_length();
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partition.set_sector_usage(fs_size, fs_size);
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}
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}
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void linux_swap::read_label( Partition & partition )
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{
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if ( ! Utils::execute_command( "swaplabel " + Glib::shell_quote( partition.get_path() ), output, error, true ) )
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{
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partition.set_filesystem_label( Utils::regexp_label( output, "^LABEL:[[:blank:]]*(.*)$" ) );
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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.push_back_message( output );
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if ( ! error .empty() )
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partition.push_back_message( error );
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}
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}
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bool linux_swap::write_label( const Partition & partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "swaplabel -L " + Glib::shell_quote( partition.get_filesystem_label() ) +
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" " + Glib::shell_quote( partition.get_path() ),
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operationdetail, EXEC_CHECK_STATUS );
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}
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void linux_swap::read_uuid( Partition & partition )
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{
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if ( ! Utils::execute_command( "swaplabel " + Glib::shell_quote( partition.get_path() ), output, error, true ) )
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{
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partition .uuid = Utils::regexp_label( output, "^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.push_back_message( output );
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if ( ! error .empty() )
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partition.push_back_message( error );
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}
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}
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bool linux_swap::write_uuid( const Partition & partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "swaplabel -U " + Glib::shell_quote( Utils::generate_uuid() ) +
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" " + Glib::shell_quote( partition.get_path() ),
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operationdetail, EXEC_CHECK_STATUS );
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}
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bool linux_swap::create( const Partition & new_partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "mkswap -L " + Glib::shell_quote( new_partition.get_filesystem_label() ) +
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" " + Glib::shell_quote( new_partition.get_path() ),
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operationdetail, EXEC_CHECK_STATUS );
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}
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bool linux_swap::resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition )
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{
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//Maintain label and uuid when recreating swap
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Glib::ustring command = "mkswap -L " + Glib::shell_quote( partition_new.get_filesystem_label() ) + " ";
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if ( ! partition_new .uuid .empty() )
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command += " -U " + Glib::shell_quote( partition_new.uuid ) + " ";
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command += Glib::shell_quote( partition_new.get_path() );
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return ! execute_command( command, operationdetail, EXEC_CHECK_STATUS );
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}
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bool linux_swap::move( const Partition & partition_new
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, const Partition & partition_old
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, OperationDetail & operationdetail
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)
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{
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//Since linux-swap does not contain data, do not actually move the partition
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operationdetail .add_child(
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OperationDetail(
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/* TO TRANSLATORS: looks like Partition move action skipped because linux-swap file system does not contain data */
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Glib::ustring::compose( _("Partition move action skipped because %1 file system does not contain data")
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, Utils::get_filesystem_string( FS_LINUX_SWAP )
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)
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, STATUS_NONE
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, FONT_ITALIC
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)
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) ;
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return true ;
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}
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bool linux_swap::copy( const Partition & src_part,
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Partition & dest_part,
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OperationDetail & operationdetail )
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{
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//Since linux-swap does not contain data, do not actually copy the partition
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operationdetail .add_child(
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OperationDetail(
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/* TO TRANSLATORS: looks like Partition copy action skipped because linux-swap file system does not contain data */
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Glib::ustring::compose( _("Partition copy action skipped because %1 file system does not contain data")
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, Utils::get_filesystem_string( FS_LINUX_SWAP )
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)
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, STATUS_NONE
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, FONT_ITALIC
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)
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) ;
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return true ;
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}
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} //GParted
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