diff options
Diffstat (limited to 'src/corelib/io/qfile.cpp')
| -rw-r--r-- | src/corelib/io/qfile.cpp | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/corelib/io/qfile.cpp b/src/corelib/io/qfile.cpp index 50e9a8f..85e78a6 100644 --- a/src/corelib/io/qfile.cpp +++ b/src/corelib/io/qfile.cpp @@ -48,6 +48,7 @@ #include "qfileinfo.h" #include "private/qiodevice_p.h" #include "private/qfile_p.h" +#include "private/qsystemerror_p.h" #if defined(QT_BUILD_CORE_LIB) # include "qcoreapplication.h" #endif @@ -992,8 +993,14 @@ bool QFile::open(OpenMode mode) return false; } +#ifdef Q_OS_SYMBIAN + // For symbian, the unbuffered flag is used to control write-behind cache behaviour + if (fileEngine()->open(mode)) +#else // QIODevice provides the buffering, so there's no need to request it from the file engine. - if (fileEngine()->open(mode | QIODevice::Unbuffered)) { + if (fileEngine()->open(mode | QIODevice::Unbuffered)) +#endif + { QIODevice::open(mode); if (mode & Append) seek(size()); @@ -1223,6 +1230,7 @@ bool QFile::unmap(uchar *address) d->setError(d->fileEngine->error(), d->fileEngine->errorString()); return success; } + d->setError(PermissionsError, tr("No file engine available or engine does not support UnMapExtension")); return false; } @@ -1477,7 +1485,17 @@ bool QFile::atEnd() const } /*! - \reimp + For random-access devices, this function sets the current position + to \a pos, returning true on success, or false if an error occurred. + For sequential devices, the default behavior is to do nothing and + return false. + + Seeking beyond the end of a file: + If the position is beyond the end of a file, then seek() shall not + immediately extend the file. If a write is performed at this position, + then the file shall be extended. The content of the file between the + previous end of file and the newly written data is UNDEFINED and + varies between platforms and file systems. */ bool QFile::seek(qint64 off) |