1/*
2 * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package sun.nio.fs;
27
28import java.nio.file.*;
29import java.io.IOException;
30import java.util.*;
31import java.security.AccessController;
32import sun.security.action.GetPropertyAction;
33
34/**
35 * Bsd implementation of FileSystem
36 */
37
38class BsdFileSystem extends UnixFileSystem {
39
40    BsdFileSystem(UnixFileSystemProvider provider, String dir) {
41        super(provider, dir);
42    }
43
44    @Override
45    public WatchService newWatchService()
46        throws IOException
47    {
48        // use polling implementation until we implement a BSD/kqueue one
49        return new PollingWatchService();
50    }
51
52    // lazy initialization of the list of supported attribute views
53    private static class SupportedFileFileAttributeViewsHolder {
54        static final Set<String> supportedFileAttributeViews =
55            supportedFileAttributeViews();
56        private static Set<String> supportedFileAttributeViews() {
57            Set<String> result = new HashSet<String>();
58            result.addAll(standardFileAttributeViews());
59            return Collections.unmodifiableSet(result);
60        }
61    }
62
63    @Override
64    public Set<String> supportedFileAttributeViews() {
65        return SupportedFileFileAttributeViewsHolder.supportedFileAttributeViews;
66    }
67
68    @Override
69    void copyNonPosixAttributes(int ofd, int nfd) {
70    }
71
72    /**
73     * Returns object to iterate over mount entries
74     */
75    @Override
76    Iterable<UnixMountEntry> getMountEntries() {
77        ArrayList<UnixMountEntry> entries = new ArrayList<UnixMountEntry>();
78        try {
79            long iter = BsdNativeDispatcher.getfsstat();
80            try {
81                for (;;) {
82                    UnixMountEntry entry = new UnixMountEntry();
83                    int res = BsdNativeDispatcher.fsstatEntry(iter, entry);
84                    if (res < 0)
85                        break;
86                    entries.add(entry);
87                }
88            } finally {
89                BsdNativeDispatcher.endfsstat(iter);
90            }
91
92        } catch (UnixException x) {
93            // nothing we can do
94        }
95        return entries;
96    }
97
98
99
100    @Override
101    FileStore getFileStore(UnixMountEntry entry) throws IOException {
102        return new BsdFileStore(this, entry);
103    }
104}
105