1 /*
2 SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
3 SPDX-FileCopyrightText: 2013-2018 Andrius Štikonas <andrius@stikonas.eu>
4 SPDX-FileCopyrightText: 2019 Yuri Chornoivan <yurchor@ukr.net>
5 SPDX-FileCopyrightText: 2020 Arnaud Ferraris <arnaud.ferraris@collabora.com>
6 SPDX-FileCopyrightText: 2020 Gaël PORTAY <gael.portay@collabora.com>
7
8 SPDX-License-Identifier: GPL-3.0-or-later
9 */
10
11 #include "fs/reiser4.h"
12
13 #include "util/capacity.h"
14 #include "util/externalcommand.h"
15
16 #include <QRegularExpression>
17 #include <QStringList>
18
19 namespace FS
20 {
21 FileSystem::CommandSupportType reiser4::m_GetUsed = FileSystem::cmdSupportNone;
22 FileSystem::CommandSupportType reiser4::m_GetLabel = FileSystem::cmdSupportNone;
23 FileSystem::CommandSupportType reiser4::m_Create = FileSystem::cmdSupportNone;
24 FileSystem::CommandSupportType reiser4::m_Move = FileSystem::cmdSupportNone;
25 FileSystem::CommandSupportType reiser4::m_Check = FileSystem::cmdSupportNone;
26 FileSystem::CommandSupportType reiser4::m_Copy = FileSystem::cmdSupportNone;
27 FileSystem::CommandSupportType reiser4::m_Backup = FileSystem::cmdSupportNone;
28
reiser4(qint64 firstsector,qint64 lastsector,qint64 sectorsused,const QString & label,const QVariantMap & features)29 reiser4::reiser4(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, const QVariantMap& features) :
30 FileSystem(firstsector, lastsector, sectorsused, label, features, FileSystem::Type::Reiser4)
31 {
32 }
33
init()34 void reiser4::init()
35 {
36 m_GetLabel = cmdSupportCore;
37 m_GetUsed = findExternal(QStringLiteral("debugfs.reiser4"), {}, 16) ? cmdSupportFileSystem : cmdSupportNone;
38 m_Create = findExternal(QStringLiteral("mkfs.reiser4"), {}, 16) ? cmdSupportFileSystem : cmdSupportNone;
39 m_Check = findExternal(QStringLiteral("fsck.reiser4"), {}, 16) ? cmdSupportFileSystem : cmdSupportNone;
40 m_Move = m_Copy = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
41 m_Backup = cmdSupportCore;
42 }
43
supportToolFound() const44 bool reiser4::supportToolFound() const
45 {
46 return
47 m_GetUsed != cmdSupportNone &&
48 m_GetLabel != cmdSupportNone &&
49 // m_SetLabel != cmdSupportNone &&
50 m_Create != cmdSupportNone &&
51 m_Check != cmdSupportNone &&
52 // m_UpdateUUID != cmdSupportNone &&
53 // m_Grow != cmdSupportNone &&
54 // m_Shrink != cmdSupportNone &&
55 m_Copy != cmdSupportNone &&
56 m_Move != cmdSupportNone &&
57 m_Backup != cmdSupportNone;
58 // m_GetUUID != cmdSupportNone;
59 }
60
supportToolName() const61 FileSystem::SupportTool reiser4::supportToolName() const
62 {
63 return SupportTool(QStringLiteral("reiser4progs"), QUrl(QStringLiteral("https://github.com/edward6/reiser4progs")));
64 }
65
maxCapacity() const66 qint64 reiser4::maxCapacity() const
67 {
68 // looks like it's actually unknown. see
69 // https://en.wikipedia.org/wiki/Comparison_of_file_systems
70 return Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::EiB);
71 }
72
maxLabelLength() const73 int reiser4::maxLabelLength() const
74 {
75 return 16;
76 }
77
readUsedCapacity(const QString & deviceNode) const78 qint64 reiser4::readUsedCapacity(const QString& deviceNode) const
79 {
80 ExternalCommand cmd(QStringLiteral("debugfs.reiser4"), { deviceNode });
81
82 if (cmd.run(-1) && cmd.exitCode() == 16) {
83 qint64 blocks = -1;
84 QRegularExpression re(QStringLiteral("blocks:\\s+(\\d+)"));
85 QRegularExpressionMatch reBlocks = re.match(cmd.output());
86
87 if (reBlocks.hasMatch())
88 blocks = reBlocks.captured(1).toLongLong();
89
90 qint64 blockSize = -1;
91 re.setPattern(QStringLiteral("blksize:\\s+(\\d+)"));
92 QRegularExpressionMatch reBlockSize = re.match(cmd.output());
93
94 if (reBlockSize.hasMatch())
95 blockSize = reBlockSize.captured(1).toLongLong();
96
97 qint64 freeBlocks = -1;
98 re.setPattern(QStringLiteral("free blocks:\\s+(\\d+)"));
99 QRegularExpressionMatch reFreeBlocks = re.match(cmd.output());
100
101 if (reFreeBlocks.hasMatch())
102 freeBlocks = reFreeBlocks.captured(1).toLongLong();
103
104 if (blocks > - 1 && blockSize > -1 && freeBlocks > -1)
105 return (blocks - freeBlocks) * blockSize;
106 }
107
108 return -1;
109 }
110
check(Report & report,const QString & deviceNode) const111 bool reiser4::check(Report& report, const QString& deviceNode) const
112 {
113 ExternalCommand cmd(report, QStringLiteral("fsck.reiser4"), { QStringLiteral("--yes"), QStringLiteral("--fix"), deviceNode });
114 return cmd.run(-1) && cmd.exitCode() == 0;
115 }
116
create(Report & report,const QString & deviceNode)117 bool reiser4::create(Report& report, const QString& deviceNode)
118 {
119 ExternalCommand cmd(report, QStringLiteral("mkfs.reiser4"), { QStringLiteral("--yes"), QStringLiteral("--force"), deviceNode });
120 return cmd.run(-1) && cmd.exitCode() == 0;
121 }
122 }
123