JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2008, 2019, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.nio.fs;

import java.security.AccessController;
import java.security.PrivilegedAction;

/**
 * Bsd specific system calls.
 */

class BsdNativeDispatcher extends UnixNativeDispatcher {
    protected BsdNativeDispatcher() { }

   /**
    * struct fsstat_iter *getfsstat();
    */
    static native long getfsstat() throws UnixException;

   /**
    * int fsstatEntry(struct fsstat_iter * iter, UnixMountEntry entry);
    */
    static native int fsstatEntry(long iter, UnixMountEntry entry)
        throws UnixException;

   /**
    * void endfsstat(struct fsstat_iter * iter);
    */
    static native void endfsstat(long iter) throws UnixException;

    /**
     * int statfs(const char *path, struct statfs *buf);
     * returns buf->f_mntonname (directory on which mounted)
     */
    static byte[] getmntonname(UnixPath path) throws UnixException {
        NativeBuffer pathBuffer = copyToNativeBuffer(path);
        try {
            return getmntonname0(pathBuffer.address());

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