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Remove hardcoded 4096 payloadOffset.

This commit is contained in:
Chantara Tith 2016-08-06 17:41:33 +07:00 committed by Andrius Štikonas
parent bc0cd8c411
commit 0d09853bd4
1 changed files with 9 additions and 2 deletions
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11
src/fs/luks.cpp
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@ -601,8 +601,15 @@ qint64 luks::getKeySize(const QString& deviceNode) const
*/
qint64 luks::getPayloadOffset(const QString& deviceNode) const
{
//4096 sectors and 512 bytes.
return 4096 * 512;
ExternalCommand cmd(QStringLiteral("cryptsetup"),
{ QStringLiteral("luksDump"), deviceNode });
if (cmd.run(-1) && cmd.exitCode() == 0) {
QRegularExpression re(QStringLiteral("Payload offset:\\s+(\\d+)"));
QRegularExpressionMatch rePayloadOffset = re.match(cmd.output());
if (rePayloadOffset.hasMatch())
return rePayloadOffset.captured(1).toLongLong() * 512; // assuming LUKS sector size is 512
}
return -1;
}
bool luks::canEncryptType(FileSystem::Type type)