71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2022 MBition GmbH
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SPDX-FileContributor: Kai Uwe Broulik <kai_uwe.broulik@mbition.io>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <config-kwin.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include "utils/ramfile.h"
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#include <QTest>
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using namespace KWin;
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class TestUtils : public QObject
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{
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Q_OBJECT
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private Q_SLOTS:
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void testRamFile();
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void testSealedRamFile();
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};
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static const QByteArray s_testByteArray = QByteArrayLiteral("Test Data \0\1\2\3");
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static const char s_writeTestArray[] = "test";
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void TestUtils::testRamFile()
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{
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KWin::RamFile file("test", s_testByteArray.constData(), s_testByteArray.size());
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QVERIFY(file.isValid());
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QCOMPARE(file.size(), s_testByteArray.size());
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QVERIFY(file.fd() != -1);
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char buf[20];
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int num = read(file.fd(), buf, sizeof buf);
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QCOMPARE(num, file.size());
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QCOMPARE(qstrcmp(s_testByteArray.constData(), buf), 0);
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}
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void TestUtils::testSealedRamFile()
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{
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#if HAVE_MEMFD
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KWin::RamFile file("test", s_testByteArray.constData(), s_testByteArray.size(), KWin::RamFile::Flag::SealWrite);
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QVERIFY(file.isValid());
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QVERIFY(file.effectiveFlags().testFlag(KWin::RamFile::Flag::SealWrite));
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// Writing should not work.
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auto written = write(file.fd(), s_writeTestArray, strlen(s_writeTestArray));
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QCOMPARE(written, -1);
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// Cannot use MAP_SHARED on sealed file descriptor.
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void *data = mmap(nullptr, file.size(), PROT_WRITE, MAP_SHARED, file.fd(), 0);
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QCOMPARE(data, MAP_FAILED);
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data = mmap(nullptr, file.size(), PROT_WRITE, MAP_PRIVATE, file.fd(), 0);
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QVERIFY(data != MAP_FAILED);
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#else
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QSKIP("Sealing requires memfd suport.");
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#endif
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}
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QTEST_MAIN(TestUtils)
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#include "test_utils.moc"
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