modules/compress/src/main/java/org/apache/ignite/internal/processors/compress/NativeFileSystemPosix.java

/*
 * 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.ignite.internal.processors.compress;

import java.nio.file.Path;
import jnr.posix.FileStat;
import jnr.posix.POSIX;
import jnr.posix.POSIXFactory;

/**
 * Posix file system API.
 */
public class NativeFileSystemPosix implements NativeFileSystem {
    /** */
    private static POSIX posix = POSIXFactory.getPOSIX();

    /** {@inheritDoc} */
    @Override public int getFileSystemBlockSize(Path path) {
        FileStat stat = posix.stat(path.toString());
        return Math.toIntExact(stat.blockSize());
    }

    /** {@inheritDoc} */
    @Override public int getFileSystemBlockSize(int fd) {
        FileStat stat = posix.fstat(fd);
        return Math.toIntExact(stat.blockSize());
    }

    /** {@inheritDoc} */
    @Override public long getSparseFileSize(int fd) {
        FileStat stat = posix.fstat(fd);
        return stat.blocks() * 512;
    }

    /** {@inheritDoc} */
    @Override public void punchHole(int fd, long off, long len) {
        throw new UnsupportedOperationException();
    }
}