| /** |
| * 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.server.namenode; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.fs.permission.FsPermission; |
| import org.apache.hadoop.fs.permission.PermissionStatus; |
| import org.apache.hadoop.hdfs.server.namenode.INodeWithAdditionalFields.PermissionStatusFormat; |
| import org.apache.hadoop.hdfs.server.namenode.XAttrFeature; |
| |
| /** |
| * The attributes of an inode. |
| */ |
| @InterfaceAudience.Private |
| public interface INodeAttributes { |
| |
| public boolean isDirectory(); |
| |
| /** |
| * @return null if the local name is null; |
| * otherwise, return the local name byte array. |
| */ |
| public byte[] getLocalNameBytes(); |
| |
| /** @return the user name. */ |
| public String getUserName(); |
| |
| /** @return the group name. */ |
| public String getGroupName(); |
| |
| /** @return the permission. */ |
| public FsPermission getFsPermission(); |
| |
| /** @return the permission as a short. */ |
| public short getFsPermissionShort(); |
| |
| /** @return the permission information as a long. */ |
| public long getPermissionLong(); |
| |
| /** @return the ACL feature. */ |
| public AclFeature getAclFeature(); |
| |
| /** @return the XAttrs feature. */ |
| public XAttrFeature getXAttrFeature(); |
| |
| /** @return the modification time. */ |
| public long getModificationTime(); |
| |
| /** @return the access time. */ |
| public long getAccessTime(); |
| |
| /** A read-only copy of the inode attributes. */ |
| public static abstract class SnapshotCopy implements INodeAttributes { |
| private final byte[] name; |
| private final long permission; |
| private final AclFeature aclFeature; |
| private final long modificationTime; |
| private final long accessTime; |
| private XAttrFeature xAttrFeature; |
| |
| SnapshotCopy(byte[] name, PermissionStatus permissions, |
| AclFeature aclFeature, long modificationTime, long accessTime, |
| XAttrFeature xAttrFeature) { |
| this.name = name; |
| this.permission = PermissionStatusFormat.toLong(permissions); |
| if (aclFeature != null) { |
| aclFeature = AclStorage.addAclFeature(aclFeature); |
| } |
| this.aclFeature = aclFeature; |
| this.modificationTime = modificationTime; |
| this.accessTime = accessTime; |
| this.xAttrFeature = xAttrFeature; |
| } |
| |
| SnapshotCopy(INode inode) { |
| this.name = inode.getLocalNameBytes(); |
| this.permission = inode.getPermissionLong(); |
| if (inode.getAclFeature() != null) { |
| aclFeature = AclStorage.addAclFeature(inode.getAclFeature()); |
| } else { |
| aclFeature = null; |
| } |
| this.modificationTime = inode.getModificationTime(); |
| this.accessTime = inode.getAccessTime(); |
| this.xAttrFeature = inode.getXAttrFeature(); |
| } |
| |
| @Override |
| public final byte[] getLocalNameBytes() { |
| return name; |
| } |
| |
| @Override |
| public final String getUserName() { |
| return PermissionStatusFormat.getUser(permission); |
| } |
| |
| @Override |
| public final String getGroupName() { |
| return PermissionStatusFormat.getGroup(permission); |
| } |
| |
| @Override |
| public final FsPermission getFsPermission() { |
| return new FsPermission(getFsPermissionShort()); |
| } |
| |
| @Override |
| public final short getFsPermissionShort() { |
| return PermissionStatusFormat.getMode(permission); |
| } |
| |
| @Override |
| public long getPermissionLong() { |
| return permission; |
| } |
| |
| @Override |
| public AclFeature getAclFeature() { |
| return aclFeature; |
| } |
| |
| @Override |
| public final long getModificationTime() { |
| return modificationTime; |
| } |
| |
| @Override |
| public final long getAccessTime() { |
| return accessTime; |
| } |
| |
| @Override |
| public final XAttrFeature getXAttrFeature() { |
| return xAttrFeature; |
| } |
| } |
| } |