import org.apache.hadoop.nfs.nfs3.response.SYMLINK3Response; //导入依赖的package包/类
@Test(timeout = 60000)
public void testSymlink() throws Exception {
  HdfsFileStatus status = nn.getRpcServer().getFileInfo(testdir);
  long dirId = status.getFileId();
  XDR xdr_req = new XDR();
  FileHandle handle = new FileHandle(dirId);
  SYMLINK3Request req = new SYMLINK3Request(handle, "fubar", new SetAttr3(),
      "bar");
  req.serialize(xdr_req);

  // Attempt by an unprivileged user should fail.
  SYMLINK3Response response1 = nfsd.symlink(xdr_req.asReadOnlyWrap(),
      securityHandlerUnpriviledged,
      new InetSocketAddress("localhost", 1234));
  assertEquals("Incorrect return code:", Nfs3Status.NFS3ERR_ACCES,
      response1.getStatus());

  // Attempt by a privileged user should pass.
  SYMLINK3Response response2 = nfsd.symlink(xdr_req.asReadOnlyWrap(),
      securityHandler, new InetSocketAddress("localhost", 1234));
  assertEquals("Incorrect return code:", Nfs3Status.NFS3_OK,
      response2.getStatus());
}
 

import org.apache.hadoop.nfs.nfs3.response.SYMLINK3Response; //导入依赖的package包/类
@Test(timeout = 60000)
public void testReadlink() throws Exception {
  // Create a symlink first.
  HdfsFileStatus status = nn.getRpcServer().getFileInfo(testdir);
  long dirId = status.getFileId();
  XDR xdr_req = new XDR();
  FileHandle handle = new FileHandle(dirId);
  SYMLINK3Request req = new SYMLINK3Request(handle, "fubar", new SetAttr3(),
      "bar");
  req.serialize(xdr_req);
  
  SYMLINK3Response response = nfsd.symlink(xdr_req.asReadOnlyWrap(),
      securityHandler, new InetSocketAddress("localhost", 1234));
  assertEquals("Incorrect return code:", Nfs3Status.NFS3_OK,
      response.getStatus());

  // Now perform readlink operations.
  FileHandle handle2 = response.getObjFileHandle();
  XDR xdr_req2 = new XDR();
  READLINK3Request req2 = new READLINK3Request(handle2);
  req2.serialize(xdr_req2);

  // Attempt by an unpriviledged user should fail.
  READLINK3Response response1 = nfsd.readlink(xdr_req2.asReadOnlyWrap(),
      securityHandlerUnpriviledged,
      new InetSocketAddress("localhost", 1234));
  assertEquals("Incorrect return code:", Nfs3Status.NFS3ERR_ACCES,
      response1.getStatus());

  // Attempt by a priviledged user should pass.
  READLINK3Response response2 = nfsd.readlink(xdr_req2.asReadOnlyWrap(),
      securityHandler, new InetSocketAddress("localhost", 1234));
  assertEquals("Incorrect return code:", Nfs3Status.NFS3_OK,
      response2.getStatus());
}
 

import org.apache.hadoop.nfs.nfs3.response.SYMLINK3Response; //导入依赖的package包/类
@Override
public SYMLINK3Response symlink(XDR xdr, RpcInfo info) {
  return symlink(xdr, getSecurityHandler(info), info.remoteAddress());
}
 

import org.apache.hadoop.nfs.nfs3.response.SYMLINK3Response; //导入依赖的package包/类
public SYMLINK3Response symlink(XDR xdr, RpcAuthSys authSys) {
  return new SYMLINK3Response(Nfs3Status.NFS3ERR_NOTSUPP);
}