8071687: AIX port of "8039173: Propagate errors from Diagnostic Commands as...

8071687: AIX port of "8039173: Propagate errors from Diagnostic Commands as exceptions in the attach framework"
Reviewed-by: sla

src/aix/classes/sun/tools/attach/AixVirtualMachine.java

 /*
- * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2013 SAP AG. All rights reserved.
+ * Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2015 SAP AG. 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
@@ -25,14 +25,14 @@
  */
 package sun.tools.attach;
 
-import com.sun.tools.attach.VirtualMachine;
+import com.sun.tools.attach.AttachOperationFailedException;
 import com.sun.tools.attach.AgentLoadException;
 import com.sun.tools.attach.AttachNotSupportedException;
 import com.sun.tools.attach.spi.AttachProvider;
+
 import java.io.InputStream;
 import java.io.IOException;
 import java.io.File;
-import java.util.Properties;
 
 // Based on 'LinuxVirtualMachine.java'. All occurrences of the string
 // "Linux" have been textually replaced by "Aix" to avoid confusion.
@@ -192,6 +192,8 @@ public class AixVirtualMachine extends HotSpotVirtualMachine {
         }
 
         if (completionStatus != 0) {
+            // read from the stream and use that as the error message
+            String message = readErrorMessage(sis);
             sis.close();
 
             // In the event of a protocol mismatch then the target VM
@@ -206,7 +208,11 @@ public class AixVirtualMachine extends HotSpotVirtualMachine {
             if (cmd.equals("load")) {
                 throw new AgentLoadException("Failed to load agent library");
             } else {
-                throw new IOException("Command failed in target VM");
+                if (message == null) {
+                    throw new AttachOperationFailedException("Command failed in target VM");
+                } else {
+                    throw new AttachOperationFailedException(message);
+                }
             }
         }
 

src/aix/native/sun/tools/attach/AixVirtualMachine.c

 /*
- * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2013 SAP AG. All rights reserved.
+ * Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2015 SAP AG. 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
@@ -238,14 +238,14 @@ JNIEXPORT jint JNICALL Java_sun_tools_attach_AixVirtualMachine_read
         len = remaining;
     }
 
-    RESTARTABLE(read(fd, buf+off, len), n);
+    RESTARTABLE(read(fd, buf, len), n);
     if (n == -1) {
         JNU_ThrowIOExceptionWithLastError(env, "read");
     } else {
         if (n == 0) {
             n = -1;     // EOF
         } else {
-            (*env)->SetByteArrayRegion(env, ba, off, (jint)n, (jbyte *)(buf+off));
+            (*env)->SetByteArrayRegion(env, ba, off, (jint)n, (jbyte *)(buf));
         }
     }
     return n;