| /** |
| * 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.hdfs.protocol; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.fs.permission.FsPermission; |
| |
| /** |
| * HDFS permission subclass used to indicate an ACL is present and/or that the |
| * underlying file/dir is encrypted. The ACL/encrypted bits are not visible |
| * directly to users of {@link FsPermission} serialization. This is |
| * done for backwards compatibility in case any existing clients assume the |
| * value of FsPermission is in a particular range. |
| */ |
| |
| /** |
| * @deprecated ACLs, encryption, and erasure coding are managed on FileStatus. |
| */ |
| @Deprecated |
| @InterfaceAudience.Private |
| public class FsPermissionExtension extends FsPermission { |
| private static final long serialVersionUID = 0x13c298a4; |
| |
| private final static short ACL_BIT = 1 << 12; |
| private final static short ENCRYPTED_BIT = 1 << 13; |
| private final static short ERASURE_CODED_BIT = 1 << 14; |
| private final boolean aclBit; |
| private final boolean encryptedBit; |
| private final boolean erasureCodedBit; |
| |
| /** |
| * Constructs a new FsPermissionExtension based on the given FsPermission. |
| * |
| * @param perm FsPermission containing permission bits |
| */ |
| public FsPermissionExtension(FsPermission perm, boolean hasAcl, |
| boolean isEncrypted, boolean isErasureCoded) { |
| super(perm.toShort()); |
| aclBit = hasAcl; |
| encryptedBit = isEncrypted; |
| erasureCodedBit = isErasureCoded; |
| } |
| |
| /** |
| * Creates a new FsPermissionExtension by calling the base class constructor. |
| * |
| * @param perm short containing permission bits |
| */ |
| public FsPermissionExtension(short perm) { |
| super(perm); |
| aclBit = (perm & ACL_BIT) != 0; |
| encryptedBit = (perm & ENCRYPTED_BIT) != 0; |
| erasureCodedBit = (perm & ERASURE_CODED_BIT) != 0; |
| } |
| |
| @Override |
| public short toExtendedShort() { |
| return (short)(toShort() |
| | (aclBit ? ACL_BIT : 0) |
| | (encryptedBit ? ENCRYPTED_BIT : 0) |
| | (erasureCodedBit ? ERASURE_CODED_BIT : 0)); |
| } |
| |
| @Override |
| public boolean getAclBit() { |
| return aclBit; |
| } |
| |
| @Override |
| public boolean getEncryptedBit() { |
| return encryptedBit; |
| } |
| |
| @Override |
| public boolean getErasureCodedBit() { |
| return erasureCodedBit; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| // This intentionally delegates to the base class. This is only overridden |
| // to suppress a FindBugs warning. |
| return super.equals(o); |
| } |
| |
| @Override |
| public int hashCode() { |
| // This intentionally delegates to the base class. This is only overridden |
| // to suppress a FindBugs warning. |
| return super.hashCode(); |
| } |
| } |