--- a/src/java.base/unix/classes/sun/nio/fs/UnixNativeDispatcher.java	Thu May 28 00:44:10 2020
+++ b/src/java.base/unix/classes/sun/nio/fs/UnixNativeDispatcher.java	Wed May 20 19:29:11 2020
@@ -98,6 +98,27 @@
     private static native void close0(int fd);
 
     /**
+     * FILE* fopen(const char *filename, const char* mode);
+     */
+    static long fopen(UnixPath filename, String mode) throws UnixException {
+        NativeBuffer pathBuffer = copyToNativeBuffer(filename);
+        NativeBuffer modeBuffer = NativeBuffers.asNativeBuffer(Util.toBytes(mode));
+        try {
+            return fopen0(pathBuffer.address(), modeBuffer.address());
+        } finally {
+            modeBuffer.release();
+            pathBuffer.release();
+        }
+    }
+    private static native long fopen0(long pathAddress, long modeAddress)
+        throws UnixException;
+
+    /**
+     * fclose(FILE* stream)
+     */
+    static native void fclose(long stream) throws UnixException;
+
+    /**
      * void rewind(FILE* stream);
      */
     static native void rewind(long stream) throws UnixException;
@@ -559,6 +580,25 @@
         throws UnixException;
 
     /**
+     * long int pathconf(const char *path, int name);
+     */
+    static long pathconf(UnixPath path, int name) throws UnixException {
+        NativeBuffer buffer = copyToNativeBuffer(path);
+        try {
+            return pathconf0(buffer.address(), name);
+        } finally {
+            buffer.release();
+        }
+    }
+    private static native long pathconf0(long pathAddress, int name)
+        throws UnixException;
+
+    /**
+     * long fpathconf(int fildes, int name);
+     */
+    static native long fpathconf(int filedes, int name) throws UnixException;
+
+    /**
      * char* strerror(int errnum)
      */
     static native byte[] strerror(int errnum);