diff options
| -rw-r--r-- | src/corelib/io/qfsfileengine.cpp | 3 | ||||
| -rw-r--r-- | tests/auto/corelib/io/qfile/tst_qfile.cpp | 40 |
2 files changed, 43 insertions, 0 deletions
diff --git a/src/corelib/io/qfsfileengine.cpp b/src/corelib/io/qfsfileengine.cpp index 998a3334c9..1ae182a4c1 100644 --- a/src/corelib/io/qfsfileengine.cpp +++ b/src/corelib/io/qfsfileengine.cpp @@ -742,6 +742,9 @@ qint64 QFSFileEnginePrivate::writeFdFh(const char *data, qint64 len) if (len && writtenBytes == 0) { writtenBytes = -1; q->setError(errno == ENOSPC ? QFile::ResourceError : QFile::WriteError, qt_error_string(errno)); + } else { + // reset the cached size, if any + metaData.clearFlags(QFileSystemMetaData::SizeAttribute); } return writtenBytes; diff --git a/tests/auto/corelib/io/qfile/tst_qfile.cpp b/tests/auto/corelib/io/qfile/tst_qfile.cpp index 60d1517ed3..1afe629dac 100644 --- a/tests/auto/corelib/io/qfile/tst_qfile.cpp +++ b/tests/auto/corelib/io/qfile/tst_qfile.cpp @@ -234,6 +234,8 @@ private slots: void mapResource(); void mapOpenMode_data(); void mapOpenMode(); + void mapWrittenFile_data(); + void mapWrittenFile(); #ifndef Q_OS_WINCE void openStandardStreamsFileDescriptors(); @@ -3079,6 +3081,44 @@ void tst_QFile::mapOpenMode() file.close(); } +void tst_QFile::mapWrittenFile_data() +{ + QTest::addColumn<int>("mode"); + QTest::newRow("buffered") << 0; + QTest::newRow("unbuffered") << int(QIODevice::Unbuffered); +} + +void tst_QFile::mapWrittenFile() +{ + static const char data[128] = "Some data padded with nulls\n"; + QFETCH(int, mode); + + QString fileName = QDir::currentPath() + '/' + "qfile_map_testfile"; + +#ifdef Q_OS_WINCE + fileName = QFileInfo(fileName).absoluteFilePath(); +#endif + + if (QFile::exists(fileName)) { + QVERIFY(QFile::setPermissions(fileName, + QFile::WriteOwner | QFile::ReadOwner | QFile::WriteUser | QFile::ReadUser)); + QFile::remove(fileName); + } + QFile file(fileName); + QVERIFY(file.open(QIODevice::ReadWrite | QFile::OpenMode(mode))); + QCOMPARE(file.write(data, sizeof data), qint64(sizeof data)); + if ((mode & QIODevice::Unbuffered) == 0) + file.flush(); + + // test that we can read the data we've just written, without closing the file + uchar *memory = file.map(0, sizeof data); + QVERIFY(memory); + QVERIFY(memcmp(memory, data, sizeof data) == 0); + + file.close(); + file.remove(); +} + void tst_QFile::openDirectory() { QFile f1(m_resourcesDir); |