| /** |
| * 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_connect.h" |
| #include "fuse_dfs.h" |
| #include "fuse_impls.h" |
| #include "fuse_file_handle.h" |
| |
| int dfs_flush(const char *path, struct fuse_file_info *fi) { |
| TRACE1("flush", path) |
| |
| // 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); |
| assert(fi); |
| |
| if (NULL == (void*)fi->fh) { |
| return 0; |
| } |
| |
| // note that fuse calls flush on RO files too and hdfs does not like that and will return an error |
| if (fi->flags & O_WRONLY) { |
| |
| dfs_fh *fh = (dfs_fh*)fi->fh; |
| assert(fh); |
| hdfsFile file_handle = (hdfsFile)fh->hdfsFH; |
| assert(file_handle); |
| if (hdfsFlush(hdfsConnGetFs(fh->conn), file_handle) != 0) { |
| ERROR("Could not flush %lx for %s\n",(long)file_handle, path); |
| return -EIO; |
| } |
| } |
| |
| return 0; |
| } |