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Add fstab mutators.

This commit is contained in:
Andrius Štikonas 2017-09-16 20:16:17 +01:00
parent 4257021857
commit 8719fb0bf3
2 changed files with 65 additions and 35 deletions
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87
src/core/fstab.cpp
View File

@ -26,22 +26,8 @@
#include <QFileInfo>
#include <QRegularExpression>
static QString findBlkIdDevice(const QString& token, const QString& value)
{
blkid_cache cache;
QString rval;
if (blkid_get_cache(&cache, nullptr) == 0) {
if (char* c = blkid_evaluate_tag(token.toLocal8Bit().constData(), value.toLocal8Bit().constData(), &cache)) {
rval = QString::fromLocal8Bit(c);
free(c);
}
blkid_put_cache(cache);
}
return rval;
}
static void parseFsSpec(const QString& m_fsSpec, FstabEntryType& m_entryType, QString& m_deviceNode);
static QString findBlkIdDevice(const QString& token, const QString& value);
FstabEntry::FstabEntry(const QString& fsSpec, const QString& mountPoint, const QString& type, const QString& options, int dumpFreq, int passNumber, const QString& comment)
: m_fsSpec(fsSpec)
@ -52,23 +38,16 @@ FstabEntry::FstabEntry(const QString& fsSpec, const QString& mountPoint, const Q
, m_comment(comment)
{
m_options = options.split(QLatin1Char(','));
m_entryType = FstabEntryType::comment;
if (fsSpec.startsWith(QStringLiteral("UUID="))) {
m_entryType = FstabEntryType::uuid;
m_deviceNode = findBlkIdDevice(QStringLiteral("UUID"), QString(fsSpec).remove(QStringLiteral("UUID=")));
} else if (fsSpec.startsWith(QStringLiteral("LABEL="))) {
m_entryType = FstabEntryType::label;
m_deviceNode = findBlkIdDevice(QStringLiteral("LABEL"), QString(fsSpec).remove(QStringLiteral("LABEL=")));
} else if (fsSpec.startsWith(QStringLiteral("PARTUUID="))) {
m_entryType = FstabEntryType::uuid;
m_deviceNode = findBlkIdDevice(QStringLiteral("PARTUUID"), QString(fsSpec).remove(QStringLiteral("PARTUUID=")));
} else if (fsSpec.startsWith(QStringLiteral("PARTLABEL="))) {
m_entryType = FstabEntryType::label;
m_deviceNode = findBlkIdDevice(QStringLiteral("PARTLABEL"), QString(fsSpec).remove(QStringLiteral("PARTLABEL=")));
} else if (fsSpec.startsWith(QStringLiteral("/"))) {
m_entryType = FstabEntryType::deviceNode;
m_deviceNode = fsSpec;
}
parseFsSpec(m_fsSpec, m_entryType, m_deviceNode);
}
/**
@param s the new value for the fs_spec field of fstab entry
*/
void FstabEntry::setFsSpec(const QString& s)
{
m_fsSpec = s;
parseFsSpec(m_fsSpec, m_entryType, m_deviceNode);
}
FstabEntryList readFstabEntries( const QString& fstabPath )
@ -80,14 +59,14 @@ FstabEntryList readFstabEntries( const QString& fstabPath )
const QStringList fstabLines = QString::fromLocal8Bit(fstabFile.readAll()).split( QLatin1Char('\n') );
for ( const QString& rawLine : fstabLines )
{
QString line = rawLine.simplified();
QString line = rawLine.trimmed().trimmed();
if ( line.startsWith( QLatin1Char('#') ) || line.isEmpty()) {
fstabEntries.append( { {}, {}, {}, {}, {}, {}, line } );
continue;
}
QString comment = line.section( QLatin1Char('#'), 1 );
QStringList splitLine = line.section( QLatin1Char('#'), 0, 0 ).split( QRegularExpression(QStringLiteral("\\s")) );
QStringList splitLine = line.section( QLatin1Char('#'), 0, 0 ).split( QRegularExpression(QStringLiteral("[\\s]+")) );
// We now split the standard components of /etc/fstab entry:
// (0) path, or UUID, or LABEL, etc,
@ -131,3 +110,41 @@ QStringList possibleMountPoints(const QString& deviceNode, const QString& fstabP
}
return mountPoints;
}
static QString findBlkIdDevice(const QString& token, const QString& value)
{
blkid_cache cache;
QString rval;
if (blkid_get_cache(&cache, nullptr) == 0) {
if (char* c = blkid_evaluate_tag(token.toLocal8Bit().constData(), value.toLocal8Bit().constData(), &cache)) {
rval = QString::fromLocal8Bit(c);
free(c);
}
blkid_put_cache(cache);
}
return rval;
}
static void parseFsSpec(const QString& m_fsSpec, FstabEntryType& m_entryType, QString& m_deviceNode)
{
m_entryType = FstabEntryType::comment;
if (m_fsSpec.startsWith(QStringLiteral("UUID="))) {
m_entryType = FstabEntryType::uuid;
m_deviceNode = findBlkIdDevice(QStringLiteral("UUID"), QString(m_fsSpec).remove(QStringLiteral("UUID=")));
} else if (m_fsSpec.startsWith(QStringLiteral("LABEL="))) {
m_entryType = FstabEntryType::label;
m_deviceNode = findBlkIdDevice(QStringLiteral("LABEL"), QString(m_fsSpec).remove(QStringLiteral("LABEL=")));
} else if (m_fsSpec.startsWith(QStringLiteral("PARTUUID="))) {
m_entryType = FstabEntryType::uuid;
m_deviceNode = findBlkIdDevice(QStringLiteral("PARTUUID"), QString(m_fsSpec).remove(QStringLiteral("PARTUUID=")));
} else if (m_fsSpec.startsWith(QStringLiteral("PARTLABEL="))) {
m_entryType = FstabEntryType::label;
m_deviceNode = findBlkIdDevice(QStringLiteral("PARTLABEL"), QString(m_fsSpec).remove(QStringLiteral("PARTLABEL=")));
} else if (m_fsSpec.startsWith(QStringLiteral("/"))) {
m_entryType = FstabEntryType::deviceNode;
m_deviceNode = m_fsSpec;
}
}

13
src/core/fstab.h
View File

@ -65,6 +65,19 @@ public:
return m_entryType; /**< @return the type of fstab entry, e.g. device node or UUID or comment only */
}
void setFsSpec(const QString& s);
void setMountPoint(const QString& s) {
m_mountPoint = s; /**< @param s the new value for the mount point */
}
void setOptions(const QStringList& s) {
m_options = s; /**< @param s the new list with the mount options */
}
void setDumpFreq(int s) {
m_dumpFreq = s; /**< @param s the new value for the dump frequency */
}
void setPassNumber(int s) {
m_passNumber = s; /**< @param s the new value for the pass number */
}
private:
QString m_fsSpec;
QString m_deviceNode;