qfsfileengine_unix.cpp File Reference

#include "qplatformdefs.h"
#include "qabstractfileengine.h"
#include "private/qfsfileengine_p.h"
#include "private/qcore_unix_p.h"
#include "qfilesystementry_p.h"
#include "qfilesystemengine_p.h"
#include "qfile.h"
#include "qdir.h"
#include "qdatetime.h"
#include "qvarlengtharray.h"
#include <sys/mman.h>
#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#include <private/qcore_mac_p.h>

Go to the source code of this file.

Functions
static QByteArray	openModeToFopenMode (QIODevice::OpenMode flags, const QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData)
	Returns the stdlib open string corresponding to a QIODevice::OpenMode. More...
static int	openModeToOpenFlags (QIODevice::OpenMode mode)
	Returns the stdio open flags corresponding to a QIODevice::OpenMode. More...
static bool	setCloseOnExec (int fd)
	Sets the file descriptor to close on exec. More...

Function Documentation

openModeToFopenMode()

static QByteArray openModeToFopenMode ( QIODevice::OpenMode  flags, const QFileSystemEntry &  fileEntry, QFileSystemMetaData &  metaData  )

inlinestatic

Returns the stdlib open string corresponding to a QIODevice::OpenMode.

Warning

This function is not part of the public interface.

Definition at line 97 of file qfsfileengine_unix.cpp.

Referenced by QFSFileEnginePrivate::nativeOpen().

{
    QByteArray mode;
    if ((flags & QIODevice::ReadOnly) && !(flags & QIODevice::Truncate)) {
        mode = "rb";
        if (flags & QIODevice::WriteOnly) {
            metaData.clearFlags(QFileSystemMetaData::FileType);
            if (!fileEntry.isEmpty()
                    && QFileSystemEngine::fillMetaData(fileEntry, metaData, QFileSystemMetaData::FileType)
                    && metaData.isFile()) {
                mode += '+';
            } else {
                mode = "wb+";
            }
        }
    } else if (flags & QIODevice::WriteOnly) {
        mode = "wb";
        if (flags & QIODevice::ReadOnly)
            mode += '+';
    }
    if (flags & QIODevice::Append) {
        mode = "ab";
        if (flags & QIODevice::ReadOnly)
            mode += '+';
    }

#if defined(__GLIBC__) && (__GLIBC__ * 0x100 + __GLIBC_MINOR__) >= 0x0207
    // must be glibc >= 2.7
    mode += 'e';
#endif

    return mode;
}

openModeToOpenFlags()

static int openModeToOpenFlags ( QIODevice::OpenMode  mode )

inlinestatic

Returns the stdio open flags corresponding to a QIODevice::OpenMode.

Warning

This function is not part of the public interface.

Definition at line 141 of file qfsfileengine_unix.cpp.

Referenced by QFSFileEnginePrivate::nativeHandle(), and QFSFileEnginePrivate::nativeOpen().

{
    int oflags = QT_OPEN_RDONLY;
#ifdef QT_LARGEFILE_SUPPORT
    oflags |= QT_OPEN_LARGEFILE;
#endif

    if ((mode & QFile::ReadWrite) == QFile::ReadWrite) {
        oflags = QT_OPEN_RDWR | QT_OPEN_CREAT;
    } else if (mode & QFile::WriteOnly) {
        oflags = QT_OPEN_WRONLY | QT_OPEN_CREAT;
    }

    if (mode & QFile::Append) {
        oflags |= QT_OPEN_APPEND;
    } else if (mode & QFile::WriteOnly) {
        if ((mode & QFile::Truncate) || !(mode & QFile::ReadOnly))
            oflags |= QT_OPEN_TRUNC;
    }

    return oflags;
}

setCloseOnExec()

static bool setCloseOnExec ( int  fd )

inlinestatic

Sets the file descriptor to close on exec.

Warning

This function is not part of the public interface.

That is, the file descriptor is not inherited by child processes.

Definition at line 174 of file qfsfileengine_unix.cpp.

Referenced by QFSFileEnginePrivate::nativeOpen().

{
    return fd != -1 && fcntl(fd, F_SETFD, FD_CLOEXEC) != -1;
}