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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.tools.attach;
import com.sun.tools.attach.VirtualMachine;
import com.sun.tools.attach.VirtualMachineDescriptor;
import com.sun.tools.attach.AttachNotSupportedException;
import java.util.ArrayList;
import java.util.List;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
public class AttachProviderImpl extends HotSpotAttachProvider {
public AttachProviderImpl() {
String os = System.getProperty("os.name");
if (os.startsWith("Windows 9") || os.equals("Windows Me")) {
throw new RuntimeException(
"This provider is not supported on this version of Windows");
}
String arch = System.getProperty("os.arch");
if (!arch.equals("x86") && !arch.equals("amd64")) {
throw new RuntimeException(
"This provider is not supported on this processor architecture");
}
}
public String name() {
return "sun";
}
public String type() {
return "windows";
}
public VirtualMachine attachVirtualMachine(String vmid)
throws AttachNotSupportedException, IOException
{
checkAttachPermission();
// AttachNotSupportedException will be thrown if the target VM can be determined
// to be not attachable.
testAttachable(vmid);
return new VirtualMachineImpl(this, vmid);
}
public List<VirtualMachineDescriptor> listVirtualMachines() {
// If the temporary file system is secure then we use the default
// implementation, otherwise we create a list of Windows processes.
if (isTempPathSecure()) {
return super.listVirtualMachines();
} else {
return listJavaProcesses();
}
}
/**
* Returns true if the temporary file system supports security
*/
private static boolean isTempPathSecure() {
if (!wasTempPathChecked) {
synchronized (AttachProviderImpl.class) {
if (!wasTempPathChecked) {
// get the value of TMP/TEMP, ignoring UNC, and paths that
// aren't absolute
String temp = tempPath();
if ((temp != null) && (temp.length() >= 3) &&
(temp.charAt(1) == ':') && (temp.charAt(2) == '\\'))
{
// check if the volume supports security
long flags = volumeFlags(temp.substring(0, 3));
isTempPathSecure = ((flags & FS_PERSISTENT_ACLS) != 0);
}
wasTempPathChecked = true;
}
}
}
return isTempPathSecure;
}
// flag to indicate persistent ACLs are supported
private static final long FS_PERSISTENT_ACLS = 0x8L;
// indicates if we've checked the temporary file system
private static volatile boolean wasTempPathChecked;
// indicates if the temporary file system is secure (only valid when
// wasTempPathChecked is true)
private static boolean isTempPathSecure;
// returns the value of TMP/TEMP
private static native String tempPath();
// returns the flags for the given volume
private static native long volumeFlags(String volume);
/**
* Returns a list of virtual machine descriptors derived from an enumeration
* of the process list.
*/
private List<VirtualMachineDescriptor> listJavaProcesses() {
ArrayList<VirtualMachineDescriptor> list =
new ArrayList<VirtualMachineDescriptor>();
// Use localhost in the display name
String host = "localhost";
try {
host = InetAddress.getLocalHost().getHostName();
} catch (UnknownHostException uhe) {
// ignore
}
// Enumerate all processes.
// For those processes that have loaded a library named "jvm.dll"
// then we attempt to attach. If we succeed then we have a 6.0+ VM.
int processes[] = new int[1024];
int count = enumProcesses(processes, processes.length);
for (int i=0; i<count; i++) {
if (isLibraryLoadedByProcess("jvm.dll", processes[i])) {
String pid = Integer.toString(processes[i]);
try {
new VirtualMachineImpl(this, pid).detach();
// FIXME - for now we don't have an appropriate display
// name so we use pid@hostname
String name = pid + "@" + host;
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