276 lines
8.7 KiB
C++
276 lines
8.7 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 "jfs.h"
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#include "FileSystem.h"
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#include "OperationDetail.h"
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#include "Partition.h"
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#include "Utils.h"
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#include <stdio.h>
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#include <glibmm/ustring.h>
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#include <glibmm/miscutils.h>
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#include <glibmm/shell.h>
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namespace GParted
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{
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FS jfs::get_filesystem_support()
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{
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FS fs( FS_JFS );
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fs .busy = FS::GPARTED ;
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if ( ! Glib::find_program_in_path( "jfs_debugfs" ) .empty() ) {
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fs.read = FS::EXTERNAL;
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fs.online_read = FS::EXTERNAL;
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}
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if ( ! Glib::find_program_in_path( "jfs_tune" ) .empty() ) {
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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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if ( ! Glib::find_program_in_path( "mkfs.jfs" ) .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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}
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if ( ! Glib::find_program_in_path( "jfs_fsck" ) .empty() )
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fs.check = FS::EXTERNAL;
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//resizing of jfs requires mount, unmount, check/repair functionality and jfs support in the kernel
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if ( ! Glib::find_program_in_path( "mount" ) .empty() &&
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! Glib::find_program_in_path( "umount" ) .empty() &&
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fs .check &&
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Utils::kernel_supports_fs( "jfs" ) )
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{
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fs.grow = FS::EXTERNAL;
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}
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if ( fs .check )
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{
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fs.move = FS::GPARTED;
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fs.copy = FS::GPARTED;
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}
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#ifdef ENABLE_ONLINE_RESIZE
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if ( 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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fs_limits.min_size = 16 * MEBIBYTE;
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return fs ;
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}
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void jfs::set_used_sectors( Partition & partition )
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{
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// Called when the file system is unmounted *and* when mounted. Always reads the
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// on disk superblock using jfs_debugfs to accurately calculate the overall size
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// of the file system. Read free space from the kernel via statvfs() when mounted
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// for the up to date figure, and from the on disk Aggregate Disk Map (dmap) when
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// unmounted.
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exit_status = Utils::execute_command("jfs_debugfs " + Glib::shell_quote(partition.get_path()),
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"superblock\nx\ndmap\nx\nquit\n", output, error, true);
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if (exit_status != 0)
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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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return;
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}
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// s_size - Aggregate size in device (s_pbsize) blocks
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long long agg_size = -1;
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Glib::ustring::size_type index = output.find("s_size:");
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if (index < output.length())
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sscanf(output.substr(index).c_str(), "s_size: %llx", &agg_size);
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// s_bsize - Aggregate block (aka file system allocation) size in bytes
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long long agg_block_size = -1;
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index = output.find("s_bsize:");
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if (index < output.length())
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sscanf(output.substr(index).c_str(), "s_bsize: %lld", &agg_block_size);
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// s_pbsize - Physical (device) block size in bytes
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long long phys_block_size = -1;
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index = output.find("s_pbsize:");
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if (index < output.length())
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sscanf(output.substr(index).c_str(), "s_pbsize: %lld", &phys_block_size);
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// s_logpxd.len - Log (Journal) size in Aggregate (s_bsize) blocks
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long long log_len = -1;
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index = output.find("s_logpxd.len:");
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if (index < output.length())
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sscanf(output.substr(index).c_str(), "s_logpxd.len: %lld", &log_len);
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// s_fsckpxd.len - FSCK Working Space in Aggregate (s_bsize) blocks
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long long fsck_len = -1;
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index = output.find("s_fsckpxd.len:");
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if (index < output.length())
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sscanf(output.substr(index).c_str(), "s_fsckpxd.len: %lld", &fsck_len);
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Sector fs_size_sectors = -1;
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if (agg_size > -1 && agg_block_size > -1 && phys_block_size > -1 && log_len > -1 && fsck_len > -1)
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{
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fs_size_sectors = ( agg_size * phys_block_size
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+ log_len * agg_block_size
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+ fsck_len * agg_block_size) / partition.sector_size;
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}
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Sector fs_free_sectors = -1;
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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_bytes;
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if (Utils::get_mounted_filesystem_usage(partition.get_mountpoint(), ignored, fs_free_bytes, error) != 0)
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{
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partition.push_back_message(error);
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return;
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}
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fs_free_sectors = fs_free_bytes / partition.sector_size;
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}
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else // (! partition.busy)
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{
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// dn_nfree - Number of free (s_bsize) blocks in Aggregate
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long long free_blocks = -1;
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index = output.find("dn_nfree:");
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if (index < output.length())
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sscanf(output.substr(index).c_str(), "dn_nfree: %llx", &free_blocks);
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if (agg_block_size && free_blocks > -1)
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{
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fs_free_sectors = free_blocks * agg_block_size / partition.sector_size;
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}
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}
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if (fs_size_sectors > -1 && fs_free_sectors > -1 && agg_block_size > -1)
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{
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partition.set_sector_usage(fs_size_sectors, fs_free_sectors);
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partition.fs_block_size = agg_block_size;
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}
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}
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void jfs::read_label( Partition & partition )
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{
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if ( ! Utils::execute_command( "jfs_tune -l " + Glib::shell_quote( partition.get_path() ),
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output, error, true ) )
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{
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partition.set_filesystem_label( Utils::regexp_label( output, "^Volume label:[\t ]*'(.*)'" ) );
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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 jfs::write_label( const Partition & partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "jfs_tune -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 jfs::read_uuid( Partition & partition )
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{
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if ( ! Utils::execute_command( "jfs_tune -l " + Glib::shell_quote( partition.get_path() ),
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output, error, true ) )
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{
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partition .uuid = Utils::regexp_label( output, "^File system 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 jfs::write_uuid( const Partition & partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "jfs_tune -U random " + Glib::shell_quote( partition.get_path() ),
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operationdetail, EXEC_CHECK_STATUS );
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}
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bool jfs::create( const Partition & new_partition, OperationDetail & operationdetail )
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{
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return ! execute_command( "mkfs.jfs -q -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|EXEC_CANCEL_SAFE );
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}
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bool jfs::resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition )
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{
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bool success = true ;
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Glib::ustring mount_point ;
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if ( ! partition_new .busy )
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{
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mount_point = mk_temp_dir( "", operationdetail ) ;
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if ( mount_point .empty() )
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return false ;
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success &= ! execute_command( "mount -v -t jfs " + Glib::shell_quote( partition_new.get_path() ) +
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" " + Glib::shell_quote( mount_point ),
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operationdetail, EXEC_CHECK_STATUS );
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}
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else
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mount_point = partition_new .get_mountpoint() ;
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if ( success )
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{
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success &= ! execute_command( "mount -v -t jfs -o remount,resize " +
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Glib::shell_quote( partition_new.get_path() ) +
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" " + Glib::shell_quote( mount_point ),
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operationdetail, EXEC_CHECK_STATUS );
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if ( ! partition_new .busy )
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success &= ! execute_command( "umount -v " + Glib::shell_quote( mount_point ),
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operationdetail, EXEC_CHECK_STATUS );
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}
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if ( ! partition_new .busy )
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rm_temp_dir( mount_point, operationdetail ) ;
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return success ;
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}
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bool jfs::check_repair( const Partition & partition, OperationDetail & operationdetail )
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{
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exit_status = execute_command( "jfs_fsck -f " + Glib::shell_quote( partition.get_path() ),
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operationdetail, EXEC_CANCEL_SAFE );
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bool success = ( exit_status == 0 || exit_status == 1 );
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set_status( operationdetail, success );
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return success;
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}
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} //GParted
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