| /** |
| * 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_impls.h" |
| #include "fuse_file_handle.h" |
| #include "fuse_connect.h" |
| |
| /** |
| * This mutex is to protect releasing a file handle in case the user calls close in different threads |
| * and fuse passes these calls to here. |
| */ |
| pthread_mutex_t release_mutex = PTHREAD_MUTEX_INITIALIZER; |
| |
| int dfs_release (const char *path, struct fuse_file_info *fi) { |
| TRACE1("release", 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); |
| |
| int ret = 0; |
| |
| // |
| // Critical section - protect from multiple close calls in different threads. |
| // (no returns until end) |
| // |
| |
| pthread_mutex_lock(&release_mutex); |
| |
| if (NULL != (void*)fi->fh) { |
| |
| dfs_fh *fh = (dfs_fh*)fi->fh; |
| assert(fh); |
| |
| hdfsFile file_handle = (hdfsFile)fh->hdfsFH; |
| |
| if (NULL != file_handle) { |
| if (hdfsCloseFile(fh->fs, file_handle) != 0) { |
| ERROR("Could not close handle %ld for %s\n",(long)file_handle, path); |
| ret = -EIO; |
| } |
| } |
| |
| if (fh->buf != NULL) { |
| free(fh->buf); |
| } |
| |
| if (doDisconnect(fh->fs)) { |
| ret = -EIO; |
| } |
| |
| // this is always created and initialized, so always destroy it. (see dfs_open) |
| pthread_mutex_destroy(&fh->mutex); |
| |
| free(fh); |
| |
| fi->fh = (uint64_t)0; |
| } |
| |
| pthread_mutex_unlock(&release_mutex); |
| |
| // |
| // End critical section |
| // |
| |
| return ret; |
| } |