HDFS-6434. Default permission for creating file should be 644 for WebHdfs/HttpFS. Contributed by Wellington Chevreuil.

hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/resources/PermissionParam.java

@@ -28,11 +28,25 @@ public class PermissionParam extends ShortParam {
 
   private static final Domain DOMAIN = new Domain(NAME, 8);
 
-  private static final short DEFAULT_PERMISSION = 0755;
+  private static final short DEFAULT_DIR_PERMISSION = 0755;
 
-  /** @return the default FsPermission. */
-  public static FsPermission getDefaultFsPermission() {
-    return new FsPermission(DEFAULT_PERMISSION);
+  private static final short DEFAULT_FILE_PERMISSION = 0644;
+
+  private static final short DEFAULT_SYMLINK_PERMISSION = 0777;
+
+  /** @return the default FsPermission for directory. */
+  public static FsPermission getDefaultDirFsPermission() {
+    return new FsPermission(DEFAULT_DIR_PERMISSION);
+  }
+
+  /** @return the default FsPermission for file. */
+  public static FsPermission getDefaultFileFsPermission() {
+    return new FsPermission(DEFAULT_FILE_PERMISSION);
+  }
+
+  /** @return the default FsPermission for symlink. */
+  public static FsPermission getDefaultSymLinkFsPermission() {
+    return new FsPermission(DEFAULT_SYMLINK_PERMISSION);
   }
 
   /**
@@ -57,8 +71,18 @@ public String getName() {
   }
 
   /** @return the represented FsPermission. */
-  public FsPermission getFsPermission() {
-    final Short v = getValue();
-    return new FsPermission(v != null? v: DEFAULT_PERMISSION);
+  public FsPermission getFileFsPermission() {
+    return this.getFsPermission(DEFAULT_FILE_PERMISSION);
   }
+
+  /** @return the represented FsPermission. */
+  public FsPermission getDirFsPermission() {
+    return this.getFsPermission(DEFAULT_DIR_PERMISSION);
+  }
+
+  private FsPermission getFsPermission(short defaultPermission){
+    final Short v = getValue();
+    return new FsPermission(v != null? v: defaultPermission);
+  }
+
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/ParameterParser.java

@@ -104,7 +104,8 @@ short replication() {
   }
 
   FsPermission permission() {
-    return new PermissionParam(param(PermissionParam.NAME)).getFsPermission();
+    return new PermissionParam(param(PermissionParam.NAME)).
+        getFileFsPermission();
   }
 
   boolean overwrite() {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/web/resources/NamenodeWebHdfsMethods.java

@@ -507,14 +507,16 @@ private Response put(
     }
     case MKDIRS:
     {
-      final boolean b = np.mkdirs(fullpath, permission.getFsPermission(), true);
+      final boolean b = np.mkdirs(fullpath,
+          permission.getDirFsPermission(), true);
       final String js = JsonUtil.toJsonString("boolean", b);
       return Response.ok(js).type(MediaType.APPLICATION_JSON).build();
     }
     case CREATESYMLINK:
     {
       np.createSymlink(destination.getValue(), fullpath,
-          PermissionParam.getDefaultFsPermission(), createParent.getValue());
+          PermissionParam.getDefaultSymLinkFsPermission(),
+          createParent.getValue());
       return Response.ok().type(MediaType.APPLICATION_OCTET_STREAM).build();
     }
     case RENAME:
@@ -547,7 +549,7 @@ private Response put(
     }
     case SETPERMISSION:
     {
-      np.setPermission(fullpath, permission.getFsPermission());
+      np.setPermission(fullpath, permission.getDirFsPermission());
       return Response.ok().type(MediaType.APPLICATION_OCTET_STREAM).build();
     }
     case SETTIMES:

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/web/resources/TestWebHdfsCreatePermissions.java

@@ -0,0 +1,124 @@
+/**
+ * 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.web.resources;
+
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.permission.FsPermission;
+import org.apache.hadoop.hdfs.DFSTestUtil;
+import org.apache.hadoop.hdfs.MiniDFSCluster;
+import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
+import org.apache.hadoop.hdfs.web.WebHdfsTestUtil;
+import org.apache.log4j.Level;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * Test WebHDFS files/directories creation to make sure it follows same rules
+ * from dfs CLI for specifying files/directories permissions.
+ */
+public class TestWebHdfsCreatePermissions {
+  static final Log LOG = LogFactory.getLog(TestWebHdfsCreatePermissions.class);
+  {
+    DFSTestUtil.setNameNodeLogLevel(Level.ALL);
+  }
+
+  private MiniDFSCluster cluster;
+
+  @Before
+  public void initializeMiniDFSCluster() throws Exception {
+    final Configuration conf = WebHdfsTestUtil.createConf();
+    this.cluster = new MiniDFSCluster.Builder(conf).build();
+  }
+
+  @After
+  public void tearDown() throws Exception {
+    if (cluster != null) {
+      cluster.shutdown();
+    }
+  }
+
+  private void testPermissions(int expectedResponse,
+      String expectedPermission,
+      String path,
+      String... params) throws Exception {
+    final String user = System.getProperty("user.name");
+    final StringBuilder uri = new StringBuilder(cluster.getHttpUri(0));
+    uri.append("/webhdfs/v1").
+        append(path).
+        append("?user.name=").
+        append(user).
+        append("&");
+    for (String param : params) {
+      uri.append(param).append("&");
+    }
+    LOG.info(uri.toString());
+    try {
+      URL url = new URL(uri.toString());
+      HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+      conn.setRequestMethod("PUT");
+      Assert.assertEquals(expectedResponse, conn.getResponseCode());
+
+      NamenodeProtocols namenode = cluster.getNameNode().getRpcServer();
+      FsPermission resultingPermission = namenode.getFileInfo(path).
+            getPermission();
+      Assert.assertEquals(expectedPermission, resultingPermission.toString());
+    } finally {
+      cluster.shutdown();
+    }
+  }
+
+  @Test
+  public void testCreateDirNoPermissions() throws Exception {
+    testPermissions(HttpURLConnection.HTTP_OK,
+        "rwxr-xr-x",
+        "/path",
+        "op=MKDIRS");
+  }
+
+  @Test
+  public void testCreateDir777Permissions() throws Exception {
+    testPermissions(HttpURLConnection.HTTP_OK,
+        "rwxrwxrwx",
+        "/test777",
+        "op=MKDIRS&permission=777");
+  }
+
+  @Test
+  public void testCreateFileNoPermissions() throws Exception {
+    testPermissions(HttpURLConnection.HTTP_CREATED,
+        "rw-r--r--",
+        "/test-file",
+        "op=CREATE");
+  }
+
+  @Test
+  public void testCreateFile666Permissions() throws Exception {
+    testPermissions(HttpURLConnection.HTTP_CREATED,
+        "rw-rw-rw-",
+        "/test-file",
+        "op=CREATE&permission=666");
+  }
+
+}

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/resources/TestParam.java

@@ -164,7 +164,8 @@ public void testOwnerParam() {
   @Test
   public void testPermissionParam() {
     final PermissionParam p = new PermissionParam(PermissionParam.DEFAULT);
-    Assert.assertEquals(new FsPermission((short)0755), p.getFsPermission());
+    Assert.assertEquals(new FsPermission((short)0755), p.getDirFsPermission());
+    Assert.assertEquals(new FsPermission((short)0644), p.getFileFsPermission());
 
     new PermissionParam("0");