1/*
2 * Copyright (c) 2008, 2010, 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.attribute.*;
29import java.io.IOException;
30
31import static sun.nio.fs.UnixNativeDispatcher.*;
32import static sun.nio.fs.SolarisConstants.*;
33
34/**
35 * Solaris implementation of FileStore
36 */
37
38class SolarisFileStore
39    extends UnixFileStore
40{
41    private final boolean xattrEnabled;
42
43    SolarisFileStore(UnixPath file) throws IOException {
44        super(file);
45        this.xattrEnabled = xattrEnabled();
46    }
47
48    SolarisFileStore(UnixFileSystem fs, UnixMountEntry entry) throws IOException {
49        super(fs, entry);
50        this.xattrEnabled = xattrEnabled();
51    }
52
53    // returns true if extended attributes enabled
54    private boolean xattrEnabled() {
55        long res = 0L;
56        try {
57            res = pathconf(file(), _PC_XATTR_ENABLED);
58        } catch (UnixException x) {
59            // ignore
60        }
61        return (res != 0L);
62    }
63
64    @Override
65    UnixMountEntry findMountEntry() throws IOException {
66        // On Solaris iterate over the entries in the mount table to find device
67        for (UnixMountEntry entry: file().getFileSystem().getMountEntries()) {
68            if (entry.dev() == dev()) {
69                return entry;
70            }
71        }
72        throw new IOException("Device not found in mnttab");
73    }
74
75    @Override
76    public boolean supportsFileAttributeView(Class<? extends FileAttributeView> type) {
77        if (type == AclFileAttributeView.class) {
78            // lookup fstypes.properties
79            FeatureStatus status = checkIfFeaturePresent("nfsv4acl");
80            switch (status) {
81                case PRESENT     : return true;
82                case NOT_PRESENT : return false;
83                default :
84                    // AclFileAttributeView available on ZFS
85                    return (type().equals("zfs"));
86            }
87        }
88        if (type == UserDefinedFileAttributeView.class) {
89            // lookup fstypes.properties
90            FeatureStatus status = checkIfFeaturePresent("xattr");
91            switch (status) {
92                case PRESENT     : return true;
93                case NOT_PRESENT : return false;
94                default :
95                    // UserDefinedFileAttributeView available if extended
96                    // attributes supported
97                    return xattrEnabled;
98            }
99        }
100        return super.supportsFileAttributeView(type);
101    }
102
103    @Override
104    public boolean supportsFileAttributeView(String name) {
105        if (name.equals("acl"))
106            return supportsFileAttributeView(AclFileAttributeView.class);
107        if (name.equals("user"))
108            return supportsFileAttributeView(UserDefinedFileAttributeView.class);
109        return super.supportsFileAttributeView(name);
110    }
111}
112