166 lines
7.0 KiB
C++
166 lines
7.0 KiB
C++
/*************************************************************************
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* Copyright (C) 2008,2009 by Volker Lanz <vl@fidra.de> *
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* Copyright (C) 2016 by Andrius Štikonas <andrius@stikonas.eu> *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License as *
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* published by the Free Software Foundation; either version 3 of *
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* the License, or (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 "fs/ext2.h"
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#include "util/externalcommand.h"
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#include "util/capacity.h"
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#include <QRegularExpression>
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#include <QString>
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namespace FS
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{
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FileSystem::CommandSupportType ext2::m_GetUsed = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_GetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_Create = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_Grow = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_Shrink = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_Move = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_Check = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_Copy = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_Backup = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_SetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_UpdateUUID = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType ext2::m_GetUUID = FileSystem::cmdSupportNone;
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ext2::ext2(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, FileSystem::Type t) :
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FileSystem(firstsector, lastsector, sectorsused, label, t)
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{
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}
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void ext2::init()
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{
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m_GetUsed = findExternal(QStringLiteral("dumpe2fs")) ? cmdSupportFileSystem : cmdSupportNone;
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m_GetLabel = cmdSupportCore;
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m_SetLabel = findExternal(QStringLiteral("e2label")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Create = findExternal(QStringLiteral("mkfs.ext2")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Check = findExternal(QStringLiteral("e2fsck"), { QStringLiteral("-V") }) ? cmdSupportFileSystem : cmdSupportNone;
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m_UpdateUUID = findExternal(QStringLiteral("tune2fs")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Grow = (m_Check != cmdSupportNone && findExternal(QStringLiteral("resize2fs"))) ? cmdSupportFileSystem : cmdSupportNone;
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m_Shrink = (m_Grow != cmdSupportNone && m_GetUsed) != cmdSupportNone ? cmdSupportFileSystem : cmdSupportNone;
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m_Copy = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
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m_Move = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
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m_Backup = cmdSupportCore;
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m_GetUUID = cmdSupportCore;
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}
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bool ext2::supportToolFound() const
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{
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return
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m_GetUsed != cmdSupportNone &&
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m_GetLabel != cmdSupportNone &&
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m_SetLabel != cmdSupportNone &&
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m_Create != cmdSupportNone &&
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m_Check != cmdSupportNone &&
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m_UpdateUUID != cmdSupportNone &&
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m_Grow != cmdSupportNone &&
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m_Shrink != cmdSupportNone &&
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m_Copy != cmdSupportNone &&
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m_Move != cmdSupportNone &&
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m_Backup != cmdSupportNone &&
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m_GetUUID != cmdSupportNone;
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}
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FileSystem::SupportTool ext2::supportToolName() const
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{
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return SupportTool(QStringLiteral("e2fsprogs"), QUrl(QStringLiteral("http://e2fsprogs.sf.net")));
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}
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qint64 ext2::maxCapacity() const
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{
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return 16 * Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::TiB) - Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::MiB);
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}
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int ext2::maxLabelLength() const
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{
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return 16;
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}
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qint64 ext2::readUsedCapacity(const QString& deviceNode) const
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{
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ExternalCommand cmd(QStringLiteral("dumpe2fs"), { QStringLiteral("-h"), deviceNode });
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if (cmd.run()) {
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qint64 blockCount = -1;
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QRegularExpression re(QStringLiteral("Block count:\\s+(\\d+)"));
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QRegularExpressionMatch reBlockCount = re.match(cmd.output());
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if (reBlockCount.hasMatch())
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blockCount = reBlockCount.captured(1).toLongLong();
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qint64 freeBlocks = -1;
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re.setPattern(QStringLiteral("Free blocks:\\s+(\\d+)"));
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QRegularExpressionMatch reFreeBlocks = re.match(cmd.output());
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if (reFreeBlocks.hasMatch())
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freeBlocks = reFreeBlocks.captured(1).toLongLong();
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qint64 blockSize = -1;
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re.setPattern(QStringLiteral("Block size:\\s+(\\d+)"));
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QRegularExpressionMatch reBlockSize = re.match(cmd.output());
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if (reBlockSize.hasMatch())
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blockSize = reBlockSize.captured(1).toLongLong();
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if (blockCount > -1 && freeBlocks > -1 && blockSize > -1)
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return (blockCount - freeBlocks) * blockSize;
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}
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return -1;
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}
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bool ext2::check(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, QStringLiteral("e2fsck"), { QStringLiteral("-f"), QStringLiteral("-y"), QStringLiteral("-v"), deviceNode });
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return cmd.run(-1) && (cmd.exitCode() == 0 || cmd.exitCode() == 1 || cmd.exitCode() == 2 || cmd.exitCode() == 256);
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}
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bool ext2::create(Report& report, const QString& deviceNode)
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{
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ExternalCommand cmd(report, QStringLiteral("mkfs.ext2"), { QStringLiteral("-qF"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool ext2::resize(Report& report, const QString& deviceNode, qint64 length) const
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{
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const QString len = QString::number(length / 512) + QStringLiteral("s");
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ExternalCommand cmd(report, QStringLiteral("resize2fs"), { deviceNode, len });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool ext2::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
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{
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ExternalCommand cmd(report, QStringLiteral("e2label"), { deviceNode, newLabel });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool ext2::writeLabelOnline(Report& report, const QString& deviceNode, const QString& mountPoint, const QString& newLabel)
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{
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Q_UNUSED(mountPoint)
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return writeLabel(report, deviceNode, newLabel);
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}
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bool ext2::updateUUID(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, QStringLiteral("tune2fs"), { QStringLiteral("-U"), QStringLiteral("random"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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}
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