bool BackupFileSystemJob::run(Report& parent)
{
bool rval = false;
Report* report = jobStarted(parent);
if (sourcePartition().fileSystem().supportBackup() == FileSystem::cmdSupportFileSystem)
rval = sourcePartition().fileSystem().backup(*report, sourceDevice(), sourcePartition().deviceNode(), fileName());
else if (sourcePartition().fileSystem().supportBackup() == FileSystem::cmdSupportCore)
{
CopySourceDevice copySource(sourceDevice(), sourcePartition().fileSystem().firstSector(), sourcePartition().fileSystem().lastSector());
CopyTargetFile copyTarget(fileName(), sourceDevice().logicalSectorSize());
if (!copySource.open())
report->line() << i18nc("@info/plain", "Could not open file system on source partition <filename>%1</filename> for backup.", sourcePartition().deviceNode());
else if (!copyTarget.open())
report->line() << i18nc("@info/plain", "Could not create backup file <filename>%1</filename>.", fileName());
else
rval = copyBlocks(*report, copyTarget, copySource);
}
jobFinished(*report, rval);
return rval;
}
bool Job::rollbackCopyBlocks(Report& report, CopyTarget& origTarget, CopySource& origSource)
{
if (!origSource.overlaps(origTarget))
{
report.line() << i18nc("@info/plain", "Source and target for copying do not overlap: Rollback is not required.");
return true;
}
try
{
CopySourceDevice& csd = dynamic_cast<CopySourceDevice&>(origSource);
CopyTargetDevice& ctd = dynamic_cast<CopyTargetDevice&>(origTarget);
// default: use values as if we were copying from front to back.
qint64 undoSourceFirstSector = origTarget.firstSector();
qint64 undoSourceLastSector = origTarget.firstSector() + origTarget.sectorsWritten() - 1;
qint64 undoTargetFirstSector = origSource.firstSector();
qint64 undoTargetLastSector = origSource.firstSector() + origTarget.sectorsWritten() - 1;
if (origTarget.firstSector() > origSource.firstSector())
{
// we were copying from back to front
undoSourceFirstSector = origTarget.firstSector() + origSource.length() - origTarget.sectorsWritten();
undoSourceLastSector = origTarget.firstSector() + origSource.length() - 1;
undoTargetFirstSector = origSource.lastSector() - origTarget.sectorsWritten() + 1;
undoTargetLastSector = origSource.lastSector();
}
report.line() << i18nc("@info/plain", "Rollback from: First sector: %1, last sector: %2.", undoSourceFirstSector, undoSourceLastSector);
report.line() << i18nc("@info/plain", "Rollback to: First sector: %1, last sector: %2.", undoTargetFirstSector, undoTargetLastSector);
CopySourceDevice undoSource(ctd.device(), undoSourceFirstSector, undoSourceLastSector);
if (!undoSource.open())
{
report.line() << i18nc("@info/plain", "Could not open device <filename>%1</filename> to rollback copying.", ctd.device().deviceNode());
return false;
}
CopyTargetDevice undoTarget(csd.device(), undoTargetFirstSector, undoTargetLastSector);
if (!undoTarget.open())
{
report.line() << i18nc("@info/plain", "Could not open device <filename>%1</filename> to rollback copying.", csd.device().deviceNode());
return false;
}
return copyBlocks(report, undoTarget, undoSource);
}
catch ( ... )
{
report.line() << i18nc("@info/plain", "Rollback failed: Source or target are not devices.");
}
return false;
}
Calamares::JobResult
MoveFileSystemJob::exec()
{
Report report( nullptr );
QString partitionPath = partition()->partitionPath();
CopySourceDevice moveSource( *m_device, m_oldFirstSector, m_oldFirstSector + m_length - 1 );
CopyTargetDevice moveTarget( *m_device, m_newFirstSector, m_newFirstSector + m_length - 1 );
if ( !moveSource.open() )
return Calamares::JobResult::error(
QString(),
tr( "Could not open file system on partition %1 for moving." ).arg( partitionPath )
);
if ( !moveTarget.open() )
return Calamares::JobResult::error(
QString(),
tr( "Could not create target for moving file system on partition %1." ).arg( partitionPath )
);
bool ok = copyBlocks( report, moveTarget, moveSource );
if ( !ok )
{
if ( rollbackCopyBlocks( report, moveTarget, moveSource ) )
return Calamares::JobResult::error(
QString(),
tr( "Moving of partition %1 failed, changes have been rolled back." ).arg( partitionPath )
+ '\n' + report.toText()
);
else
return Calamares::JobResult::error(
QString(),
tr( "Moving of partition %1 failed. Roll back of the changes have failed." ).arg( partitionPath )
+ '\n' + report.toText()
);
}
FileSystem& fs = partition()->fileSystem();
fs.setFirstSector( m_newFirstSector );
fs.setLastSector( m_newFirstSector + m_length - 1 );
if ( !fs.updateBootSector( report, partitionPath ) )
return Calamares::JobResult::error(
QString(),
tr( "Updating boot sector after the moving of partition %1 failed." ).arg( partitionPath )
+ '\n' + report.toText()
);
return Calamares::JobResult::ok();
}
bool
MoveFileSystemJob::rollbackCopyBlocks( Report& report, CopyTargetDevice& origTarget, CopySourceDevice& origSource )
{
if ( !origSource.overlaps( origTarget ) )
{
report.line() << tr( "Source and target for copying do not overlap: Rollback is not required." );
return true;
}
// default: use values as if we were copying from front to back.
qint64 undoSourceFirstSector = origTarget.firstSector();
qint64 undoSourceLastSector = origTarget.firstSector() + origTarget.sectorsWritten() - 1;
qint64 undoTargetFirstSector = origSource.firstSector();
qint64 undoTargetLastSector = origSource.firstSector() + origTarget.sectorsWritten() - 1;
if ( origTarget.firstSector() > origSource.firstSector() )
{
// we were copying from back to front
undoSourceFirstSector = origTarget.firstSector() + origSource.length() - origTarget.sectorsWritten();
undoSourceLastSector = origTarget.firstSector() + origSource.length() - 1;
undoTargetFirstSector = origSource.lastSector() - origTarget.sectorsWritten() + 1;
undoTargetLastSector = origSource.lastSector();
}
CopySourceDevice undoSource( origTarget.device(), undoSourceFirstSector, undoSourceLastSector );
if ( !undoSource.open() )
{
report.line() << tr( "Could not open device %1 to rollback copying." )
.arg( origTarget.device().deviceNode() );
return false;
}
CopyTargetDevice undoTarget( origSource.device(), undoTargetFirstSector, undoTargetLastSector );
if ( !undoTarget.open() )
{
report.line() << tr( "Could not open device %1 to rollback copying." )
.arg( origSource.device().deviceNode() );
return false;
}
return copyBlocks( report, undoTarget, undoSource );
}
