| /* |
| * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved. |
| * 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| 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; |
| |
| list.add(new HotSpotVirtualMachineDescriptor(this, pid, name)); |
| } catch (AttachNotSupportedException x) { |
| } catch (IOException ioe) { |
| } |
| } |
| } |
| |
| return list; |
| } |
| |
| // enumerates processes using psapi's EnumProcesses |
| private static native int enumProcesses(int[] processes, int max); |
| |
| // indicates if a library of a given name has been loaded by a process |
| private static native boolean isLibraryLoadedByProcess(String library, |
| int processId); |
| |
| |
| // native functions in this library |
| static { |
| System.loadLibrary("attach"); |
| } |
| |
| } |