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Apache Hadoop NFS library
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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.nfs.nfs3;

import org.apache.hadoop.nfs.nfs3.response.NFS3Response;
import org.apache.hadoop.oncrpc.RpcInfo;
import org.apache.hadoop.oncrpc.XDR;

/**
 * RPC procedures as defined in RFC 1813.
 */
public interface Nfs3Interface {

  /**
   * NULL: Do nothing.
   * @return null NFS procedure
   */
  public NFS3Response nullProcedure();

  /**
   * GETATTR: Get file attributes.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response getattr(XDR xdr, RpcInfo info);

  /**
   * SETATTR: Set file attributes.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response setattr(XDR xdr, RpcInfo info);

  /**
   * LOOKUP: Lookup filename.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response lookup(XDR xdr, RpcInfo info);

  /**
   * ACCESS: Check access permission.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response access(XDR xdr, RpcInfo info);

  /** READLINK: Read from symbolic link.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response readlink(XDR xdr, RpcInfo info);

  /**
   * READ: Read from file.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response read(XDR xdr, RpcInfo info);

  /**
   * WRITE: Write to file.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response write(XDR xdr, RpcInfo info);

  /**
   * CREATE: Create a file.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response create(XDR xdr, RpcInfo info);

  /**
   * MKDIR: Create a directory.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response mkdir(XDR xdr, RpcInfo info);

  /**
   * SYMLINK: Create a symbolic link.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response symlink(XDR xdr, RpcInfo info);

  /**
   * MKNOD: Create a special device.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response mknod(XDR xdr, RpcInfo info);

  /**
   * REMOVE: Remove a file.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response remove(XDR xdr, RpcInfo info);

  /**
   * RMDIR: Remove a directory.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response rmdir(XDR xdr, RpcInfo info);

  /**
   * RENAME: Rename a file or directory.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response rename(XDR xdr, RpcInfo info);

  /**
   * LINK: create link to an object.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response link(XDR xdr, RpcInfo info);

  /**
   * READDIR: Read From directory.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response readdir(XDR xdr, RpcInfo info);

  /**
   * READDIRPLUS: Extended read from directory.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response readdirplus(XDR xdr, RpcInfo info);
  
  /**
   * FSSTAT: Get dynamic file system information.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response fsstat(XDR xdr, RpcInfo info);

  /**
   * FSINFO: Get static file system information.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response fsinfo(XDR xdr, RpcInfo info);

  /**
   * PATHCONF: Retrieve POSIX information.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response pathconf(XDR xdr, RpcInfo info);

  /**
   * COMMIT: Commit cached data on a server to stable storage.
   * @param xdr XDR message
   * @param info context of rpc message
   * @return NFSv3 response
   */
  public NFS3Response commit(XDR xdr, RpcInfo info);
}