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 
26 package sun.nio.fs;
27 
28 import java.security.AccessController;
29 import java.security.PrivilegedAction;
30 
31 /**
32  * Linux specific system calls.
33  */
34 
35 class LinuxNativeDispatcher extends UnixNativeDispatcher {
LinuxNativeDispatcher()36     private LinuxNativeDispatcher() { }
37 
38    /**
39     * FILE *setmntent(const char *filename, const char *type);
40     */
setmntent(byte[] filename, byte[] type)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     }
setmntent0(long pathAddress, long typeAddress)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      */
getmntent(long fp, UnixMountEntry entry)57     static native int getmntent(long fp, UnixMountEntry entry)
58         throws UnixException;
59 
60     /**
61      * int endmntent(FILE* filep);
62      */
endmntent(long stream)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      */
fgetxattr(int filedes, byte[] name, long valueAddress, int valueLen)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 
fgetxattr0(int filedes, long nameAddress, long valueAddress, int valueLen)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      */
fsetxattr(int filedes, byte[] name, long valueAddress, int valueLen)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 
fsetxattr0(int filedes, long nameAddress, long valueAddress, int valueLen)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      */
fremovexattr(int filedes, byte[] name)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 
fremovexattr0(int filedes, long nameAddress)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      */
flistxattr(int filedes, long listAddress, int size)117     static native int flistxattr(int filedes, long listAddress, int size)
118         throws UnixException;
119 
120     // initialize
init()121     private static native void init();
122 
123     static {
AccessController.doPrivileged(new PrivilegedAction<>() { public Void run() { System.loadLibrary(R); return null; }})124         AccessController.doPrivileged(new PrivilegedAction<>() {
125             public Void run() {
126                 System.loadLibrary("nio");
127                 return null;
128         }});
init()129         init();
130     }
131 }
132