67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fuse_dfs.h"
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#include "fuse_impls.h"
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#include "fuse_file_handle.h"
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#include "fuse_connect.h"
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#include <stdlib.h>
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/**
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* release a fuse_file_info structure.
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*
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* When this function is invoked, there are no more references to our
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* fuse_file_info structure that exist anywhere. So there is no need for
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* locking to protect this structure here.
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*
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* Another thread could open() the same file, and get a separate, different file
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* descriptor with a different, separate fuse_file_info structure. In HDFS,
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* this results in one writer winning and overwriting everything the other
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* writer has done.
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*/
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int dfs_release (const char *path, struct fuse_file_info *fi) {
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TRACE1("release", path)
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// retrieve dfs specific data
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dfs_context *dfs = (dfs_context*)fuse_get_context()->private_data;
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// check params and the context var
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assert(path);
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assert(dfs);
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assert('/' == *path);
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int ret = 0;
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dfs_fh *fh = (dfs_fh*)fi->fh;
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assert(fh);
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hdfsFile file_handle = (hdfsFile)fh->hdfsFH;
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if (NULL != file_handle) {
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if (hdfsCloseFile(hdfsConnGetFs(fh->conn), file_handle) != 0) {
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ERROR("Could not close handle %ld for %s\n",(long)file_handle, path);
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ret = -EIO;
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}
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}
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free(fh->buf);
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hdfsConnRelease(fh->conn);
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pthread_mutex_destroy(&fh->mutex);
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free(fh);
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fi->fh = 0;
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return ret;
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}
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