138 lines
5.0 KiB
C++
138 lines
5.0 KiB
C++
/***************************************************************************
|
|
* Copyright (C) 2008,2009 by Volker Lanz <vl@fidra.de> *
|
|
* *
|
|
* 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 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., *
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
|
|
***************************************************************************/
|
|
|
|
#include "fs/fat16.h"
|
|
|
|
#include "util/externalcommand.h"
|
|
#include "util/capacity.h"
|
|
|
|
#include <kdebug.h>
|
|
|
|
#include <QString>
|
|
#include <QStringList>
|
|
#include <QRegExp>
|
|
|
|
#include <ctime>
|
|
|
|
namespace FS
|
|
{
|
|
FileSystem::SupportType fat16::m_GetUsed = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_GetLabel = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_Create = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_Grow = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_Shrink = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_Move = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_Check = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_Copy = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_Backup = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_UpdateUUID = FileSystem::SupportNone;
|
|
FileSystem::SupportType fat16::m_GetUUID = FileSystem::SupportNone;
|
|
|
|
fat16::fat16(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, FileSystem::Type t) :
|
|
FileSystem(firstsector, lastsector, sectorsused, label, t)
|
|
{
|
|
}
|
|
|
|
void fat16::init()
|
|
{
|
|
// There is no support for setting labels for FAT16 and FAT32 right now.
|
|
// The mtools package is able to do that, but requires mappings from Unix device nodes
|
|
// to Windows-like drive letters -- something we cannot support. It would, however,
|
|
// probably be possible to implement the file system label stuff ourselves here.
|
|
|
|
m_Create = findExternal("mkfs.msdos") ? SupportExternal : SupportNone;
|
|
m_GetUsed = m_Check = findExternal("fsck.msdos", QStringList(), 2) ? SupportExternal : SupportNone;
|
|
m_GetLabel = findIdUtil() ? SupportExternal : SupportNone;
|
|
m_Grow = SupportLibParted;
|
|
m_Shrink = SupportLibParted;
|
|
m_Move = SupportInternal;
|
|
m_Copy = SupportInternal;
|
|
m_Backup = SupportInternal;
|
|
m_UpdateUUID = findExternal("dd") ? SupportExternal : SupportNone;
|
|
m_GetUUID = findIdUtil() ? SupportExternal : SupportNone;
|
|
}
|
|
|
|
qint64 fat16::minCapacity() const
|
|
{
|
|
return 16 * Capacity::unitFactor(Capacity::Byte, Capacity::MiB);
|
|
}
|
|
|
|
qint64 fat16::maxCapacity() const
|
|
{
|
|
return 4 * Capacity::unitFactor(Capacity::Byte, Capacity::GiB);
|
|
}
|
|
|
|
qint64 fat16::readUsedCapacity(const QString& deviceNode) const
|
|
{
|
|
ExternalCommand cmd("fsck.msdos", QStringList() << "-n" << "-v" << deviceNode);
|
|
|
|
if (cmd.run())
|
|
{
|
|
qint64 usedClusters = -1;
|
|
QRegExp rxClusters("files, (\\d+)/\\d+ ");
|
|
|
|
if (rxClusters.indexIn(cmd.output()) != -1)
|
|
usedClusters = rxClusters.cap(1).toLongLong();
|
|
|
|
qint64 clusterSize = -1;
|
|
|
|
QRegExp rxClusterSize("(\\d+) bytes per cluster");
|
|
|
|
if (rxClusterSize.indexIn(cmd.output()) != -1)
|
|
clusterSize = rxClusterSize.cap(1).toLongLong();
|
|
|
|
if (usedClusters > -1 && clusterSize > -1)
|
|
return usedClusters * clusterSize;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
bool fat16::check(Report& report, const QString& deviceNode) const
|
|
{
|
|
ExternalCommand cmd(report, "fsck.msdos", QStringList() << "-a" << "-w" << "-v" << deviceNode);
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
bool fat16::create(Report& report, const QString& deviceNode) const
|
|
{
|
|
ExternalCommand cmd(report, "mkfs.msdos", QStringList() << "-F16" << "-v" << deviceNode);
|
|
return cmd.run(-1) && cmd.exitCode() == 0;
|
|
}
|
|
|
|
bool fat16::updateUUID(Report& report, const QString& deviceNode) const
|
|
{
|
|
qint32 t = time(NULL);
|
|
|
|
char uuid[4];
|
|
for (quint32 i = 0; i < sizeof(uuid); i++, t >>= 8)
|
|
uuid[i] = t & 0xff;
|
|
|
|
ExternalCommand cmd(report, "dd", QStringList() << "of=" + deviceNode << "bs=1" << "count=4" << "seek=39");
|
|
|
|
if (!cmd.start())
|
|
return false;
|
|
|
|
if (cmd.write(uuid, sizeof(uuid)) != sizeof(uuid))
|
|
return false;
|
|
|
|
return cmd.waitFor(-1);
|
|
}
|
|
}
|