| /** |
| * 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. |
| */ |
| |
| #include "fuse_dfs.h" |
| #include "fuse_users.h" |
| #include "fuse_impls.h" |
| #include "fuse_connect.h" |
| |
| int dfs_chown(const char *path, uid_t uid, gid_t gid) |
| { |
| TRACE1("chown", path) |
| |
| int ret = 0; |
| |
| #if PERMS |
| char *user = NULL; |
| char *group = NULL; |
| |
| // retrieve dfs specific data |
| dfs_context *dfs = (dfs_context*)fuse_get_context()->private_data; |
| |
| // check params and the context var |
| assert(path); |
| assert(dfs); |
| assert('/' == *path); |
| |
| user = getUsername(uid); |
| if (NULL == user) { |
| ERROR("Could not lookup the user id string %d",(int)uid); |
| ret = -EIO; |
| } |
| |
| if (0 == ret) { |
| group = getGroup(gid); |
| if (group == NULL) { |
| ERROR("Could not lookup the group id string %d",(int)gid); |
| ret = -EIO; |
| } |
| } |
| |
| hdfsFS userFS = NULL; |
| if (0 == ret) { |
| // if not connected, try to connect and fail out if we can't. |
| if ((userFS = doConnectAsUser(dfs->nn_hostname,dfs->nn_port))== NULL) { |
| ERROR("Could not connect to HDFS"); |
| ret = -EIO; |
| } |
| } |
| |
| if (0 == ret) { |
| if (hdfsChown(userFS, path, user, group)) { |
| ERROR("Could not chown %s to %d:%d", path, (int)uid, gid); |
| ret = -EIO; |
| } |
| } |
| if (user) |
| free(user); |
| if (group) |
| free(group); |
| #endif |
| return ret; |
| |
| } |