8129633: (fs) Investigate removing the GNOME-based FileTypeDetector from the Linux and Solaris implementations
Summary: Remove the GNOME VFS detector leaving the libgio detector in place.
Reviewed-by: chegar
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package sun.nio.fs;
import java.nio.file.Path;
import java.io.IOException;
import java.security.AccessController;
import java.security.PrivilegedAction;
/**
* File type detector that uses the GNOME I/O library to guess the
* MIME type of a file.
*/
public class GnomeFileTypeDetector
extends AbstractFileTypeDetector
{
// true if GIO is available
private final boolean gioAvailable;
public GnomeFileTypeDetector() {
gioAvailable = initializeGio();
}
@Override
public String implProbeContentType(Path obj) throws IOException {
if (!gioAvailable)
return null;
if (!(obj instanceof UnixPath))
return null;
UnixPath path = (UnixPath)obj;
NativeBuffer buffer = NativeBuffers.asNativeBuffer(path.getByteArrayForSysCalls());
try {
// GIO may access file so need permission check
path.checkRead();
byte[] type = probeGio(buffer.address());
return (type == null) ? null : Util.toString(type);
} finally {
buffer.release();
}
}
// GIO
private static native boolean initializeGio();
private static native byte[] probeGio(long pathAddress);
static {
AccessController.doPrivileged(new PrivilegedAction<>() {
public Void run() {
System.loadLibrary("nio");
return null;
}});
}
}