8023203: Wrap RandomAccessFile.seek native method into a Java helper method

Reviewed-by: alanb, chegar

make/java/java/mapfile-vers

@@ -100,7 +100,7 @@ SUNWprivate_1.1 {
 		Java_java_io_RandomAccessFile_open;
 		Java_java_io_RandomAccessFile_read;
 		Java_java_io_RandomAccessFile_readBytes;
-		Java_java_io_RandomAccessFile_seek;
+		Java_java_io_RandomAccessFile_seek0;
 		Java_java_io_RandomAccessFile_setLength;
 		Java_java_io_RandomAccessFile_write;
 		Java_java_io_RandomAccessFile_writeBytes;

makefiles/mapfiles/libjava/mapfile-vers

@@ -100,7 +100,7 @@ SUNWprivate_1.1 {
 		Java_java_io_RandomAccessFile_open;
 		Java_java_io_RandomAccessFile_read;
 		Java_java_io_RandomAccessFile_readBytes;
-		Java_java_io_RandomAccessFile_seek;
+		Java_java_io_RandomAccessFile_seek0;
 		Java_java_io_RandomAccessFile_setLength;
 		Java_java_io_RandomAccessFile_write;
 		Java_java_io_RandomAccessFile_writeBytes;

src/share/classes/java/io/RandomAccessFile.java

@@ -518,7 +518,15 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
      * @exception  IOException  if {@code pos} is less than
      *                          {@code 0} or if an I/O error occurs.
      */
-    public native void seek(long pos) throws IOException;
+    public void seek(long pos) throws IOException {
+        if (pos < 0) {
+            throw new IOException("Negative seek offset");
+        } else {
+            seek0(pos);
+        }
+    }
+
+    private native void seek0(long pos) throws IOException;
 
     /**
      * Returns the length of this file.

src/share/native/java/io/RandomAccessFile.c

 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2013, 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
@@ -123,7 +123,7 @@ Java_java_io_RandomAccessFile_length(JNIEnv *env, jobject this) {
 }
 
 JNIEXPORT void JNICALL
-Java_java_io_RandomAccessFile_seek(JNIEnv *env,
+Java_java_io_RandomAccessFile_seek0(JNIEnv *env,
                     jobject this, jlong pos) {
 
     FD fd;