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.security.AccessController;
29import java.security.PrivilegedAction;
30
31/**
32 * Linux specific system calls.
33 */
34
35class LinuxNativeDispatcher extends UnixNativeDispatcher {
36    private LinuxNativeDispatcher() { }
37
38   /**
39    * FILE *setmntent(const char *filename, const char *type);
40    */
41    static long setmntent(byte[] filename, byte[] type) throws UnixException {
42        NativeBuffer pathBuffer = NativeBuffers.asNativeBuffer(filename);
43        NativeBuffer typeBuffer = NativeBuffers.asNativeBuffer(type);
44        try {
45            return setmntent0(pathBuffer.address(), typeBuffer.address());
46        } finally {
47            typeBuffer.release();
48            pathBuffer.release();
49        }
50    }
51    private static native long setmntent0(long pathAddress, long typeAddress)
52        throws UnixException;
53
54    /**
55     * int getmntent(FILE *fp, struct mnttab *mp, int len);
56     */
57    static native int getmntent(long fp, UnixMountEntry entry)
58        throws UnixException;
59
60    /**
61     * int endmntent(FILE* filep);
62     */
63    static native void endmntent(long stream) throws UnixException;
64
65    /**
66     * ssize_t fgetxattr(int filedes, const char *name, void *value, size_t size);
67     */
68    static int fgetxattr(int filedes, byte[] name, long valueAddress,
69                         int valueLen) throws UnixException
70    {
71        NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
72        try {
73            return fgetxattr0(filedes, buffer.address(), valueAddress, valueLen);
74        } finally {
75            buffer.release();
76        }
77    }
78
79    private static native int fgetxattr0(int filedes, long nameAddress,
80        long valueAddress, int valueLen) throws UnixException;
81
82    /**
83     *  fsetxattr(int filedes, const char *name, const void *value, size_t size, int flags);
84     */
85    static void fsetxattr(int filedes, byte[] name, long valueAddress,
86        int valueLen) throws UnixException
87    {
88        NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
89        try {
90            fsetxattr0(filedes, buffer.address(), valueAddress, valueLen);
91        } finally {
92            buffer.release();
93        }
94    }
95
96    private static native void fsetxattr0(int filedes, long nameAddress,
97        long valueAddress, int valueLen) throws UnixException;
98
99    /**
100     * fremovexattr(int filedes, const char *name);
101     */
102    static void fremovexattr(int filedes, byte[] name) throws UnixException {
103        NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
104        try {
105            fremovexattr0(filedes, buffer.address());
106        } finally {
107            buffer.release();
108        }
109    }
110
111    private static native void fremovexattr0(int filedes, long nameAddress)
112        throws UnixException;
113
114    /**
115     * size_t flistxattr(int filedes, const char *list, size_t size)
116     */
117    static native int flistxattr(int filedes, long listAddress, int size)
118        throws UnixException;
119
120    // initialize
121    private static native void init();
122
123    static {
124        AccessController.doPrivileged(new PrivilegedAction<>() {
125            public Void run() {
126                System.loadLibrary("nio");
127                return null;
128        }});
129        init();
130    }
131}
132