2017-08-17 09:07:24 +01:00
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/*************************************************************************
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* Copyright (C) 2017 by Pali Rohár <pali.rohar@gmail.com> *
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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/udf.h"
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#include "util/externalcommand.h"
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#include "util/capacity.h"
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#include "util/report.h"
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#include <KLocalizedString>
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#include <QString>
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#include <QStringList>
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#include <fcntl.h>
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#include <linux/fs.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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namespace FS
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{
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constexpr qint64 MIN_UDF_BLOCKS = 282;
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constexpr qint64 MAX_UDF_BLOCKS = ((1ULL << 32) - 1);
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FileSystem::CommandSupportType udf::m_Create = FileSystem::cmdSupportNone;
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udf::udf(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
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FileSystem(firstsector, lastsector, sectorsused, label, FileSystem::Udf)
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{
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}
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void udf::init()
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{
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m_Create = findExternal(QStringLiteral("mkudffs"), {}, 1) ? cmdSupportFileSystem : cmdSupportNone;
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}
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bool udf::supportToolFound() const
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{
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return m_Create != cmdSupportNone;
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}
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FileSystem::SupportTool udf::supportToolName() const
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{
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return SupportTool(QStringLiteral("udftools"), QUrl(QStringLiteral("https://github.com/pali/udftools")));
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}
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qint64 udf::minCapacity() const
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{
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// TODO: Capacity depends on logical (sector) size of disk, now hardcoded as 512
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return MIN_UDF_BLOCKS * 512;
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}
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qint64 udf::maxCapacity() const
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{
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// TODO: Capacity depends on logical (sector) size of disk, now hardcoded as 4096
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return MAX_UDF_BLOCKS * 4096;
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}
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qint64 udf::maxLabelLength() const
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{
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return 126; // and only 63 if label contains character above U+FF
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}
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bool udf::create(Report& report, const QString& deviceNode)
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2017-08-18 12:45:15 +01:00
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{
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int blkSize = blockSize(report, deviceNode);
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if (blkSize == -1)
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return false;
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ExternalCommand cmd(report, QStringLiteral("mkudffs"), {
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QStringLiteral("--utf8"),
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// TODO: Add GUI option for choosing different optical disks and UDF revision
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// For now format as UDF revision 2.01 for hard disk media type
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QStringLiteral("--media-type=hd"),
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QStringLiteral("--udfrev=0x201"),
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QStringLiteral("--blocksize=") + QString::number(blkSize),
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// TODO: Pass label as udf::create() parameter
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// QStringLiteral("--lvid=") + label,
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// QStringLiteral("--vid=") + shortlabel,
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deviceNode
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});
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool udf::createWithLabel(Report& report, const QString& deviceNode, const QString& label)
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{
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int blkSize = blockSize(report, deviceNode);
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if (blkSize == -1)
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return false;
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ExternalCommand cmd(report, QStringLiteral("mkudffs"), {
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QStringLiteral("--utf8"),
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// TODO: Add GUI option for choosing different optical disks and UDF revision
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// For now format as UDF revision 2.01 for hard disk media type
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QStringLiteral("--media-type=hd"),
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QStringLiteral("--udfrev=0x201"),
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QStringLiteral("--blocksize=") + QString::number(blkSize),
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// TODO: Pass label as udf::create() parameter
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QStringLiteral("--lvid=") + label,
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// QStringLiteral("--vid=") + shortlabel,
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deviceNode
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});
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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int udf::blockSize(Report& report, const QString& deviceNode)
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2017-08-17 09:07:24 +01:00
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{
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// mkudffs from udftools prior to 1.1 does not check for partition limits and crashes
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if ( length() > MAX_UDF_BLOCKS ) {
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report.line() << xi18nc("@info:status", "Partition is too large");
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2017-08-18 12:45:15 +01:00
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return -1;
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2017-08-17 09:07:24 +01:00
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}
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if ( length() < MIN_UDF_BLOCKS ) {
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report.line() << xi18nc("@info:status", "Partition is too small");
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2017-08-18 12:45:15 +01:00
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return -1;
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2017-08-17 09:07:24 +01:00
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}
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// mkudffs from udftools prior to 1.1 is not able to detect logical (sector) size
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// and UDF block size must match logical sector size of underlying media
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int fd = open(deviceNode.toLocal8Bit().data(), O_RDONLY);
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if ( fd < 0 ) {
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report.line() << xi18nc("@info:status", "Cannot open device node");
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2017-08-18 12:45:15 +01:00
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return -1;
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2017-08-17 09:07:24 +01:00
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}
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int blksize;
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int ret = ioctl(fd, BLKSSZGET, &blksize);
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close(fd);
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if ( ret != 0 ) {
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report.line() << xi18nc("@info:status", "Cannot read logical (sector) size of device node");
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2017-08-18 12:45:15 +01:00
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return -1;
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2017-08-17 09:07:24 +01:00
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}
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2017-08-18 12:45:15 +01:00
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return blksize;
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2017-08-17 09:07:24 +01:00
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}
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2017-08-18 12:45:15 +01:00
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2017-08-17 09:07:24 +01:00
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}
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