1 /*
2  * Copyright (c) 2008, 2019, 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 /**
29  * Linux specific system calls.
30  */
31 
32 class LinuxNativeDispatcher extends UnixNativeDispatcher {
LinuxNativeDispatcher()33     private LinuxNativeDispatcher() { }
34 
35    /**
36     * FILE *setmntent(const char *filename, const char *type);
37     */
setmntent(byte[] filename, byte[] type)38     static long setmntent(byte[] filename, byte[] type) throws UnixException {
39         NativeBuffer pathBuffer = NativeBuffers.asNativeBuffer(filename);
40         NativeBuffer typeBuffer = NativeBuffers.asNativeBuffer(type);
41         try {
42             return setmntent0(pathBuffer.address(), typeBuffer.address());
43         } finally {
44             typeBuffer.release();
45             pathBuffer.release();
46         }
47     }
setmntent0(long pathAddress, long typeAddress)48     private static native long setmntent0(long pathAddress, long typeAddress)
49         throws UnixException;
50 
51     /**
52      * int getmntent(FILE *fp, struct mnttab *mp, int len);
53      */
54 
getmntent(long fp, UnixMountEntry entry, int buflen)55     static int getmntent(long fp, UnixMountEntry entry, int buflen) throws UnixException {
56         NativeBuffer buffer = NativeBuffers.getNativeBuffer(buflen);
57         try {
58             return getmntent0(fp, entry, buffer.address(), buflen);
59         } finally {
60             buffer.release();
61         }
62     }
63 
getmntent0(long fp, UnixMountEntry entry, long buffer, int bufLen)64     static native int getmntent0(long fp, UnixMountEntry entry, long buffer, int bufLen)
65         throws UnixException;
66 
67     /**
68      * int endmntent(FILE* filep);
69      */
endmntent(long stream)70     static native void endmntent(long stream) throws UnixException;
71 
72     /**
73      * ssize_t fgetxattr(int filedes, const char *name, void *value, size_t size);
74      */
fgetxattr(int filedes, byte[] name, long valueAddress, int valueLen)75     static int fgetxattr(int filedes, byte[] name, long valueAddress,
76                          int valueLen) throws UnixException
77     {
78         NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
79         try {
80             return fgetxattr0(filedes, buffer.address(), valueAddress, valueLen);
81         } finally {
82             buffer.release();
83         }
84     }
85 
fgetxattr0(int filedes, long nameAddress, long valueAddress, int valueLen)86     private static native int fgetxattr0(int filedes, long nameAddress,
87         long valueAddress, int valueLen) throws UnixException;
88 
89     /**
90      *  fsetxattr(int filedes, const char *name, const void *value, size_t size, int flags);
91      */
fsetxattr(int filedes, byte[] name, long valueAddress, int valueLen)92     static void fsetxattr(int filedes, byte[] name, long valueAddress,
93         int valueLen) throws UnixException
94     {
95         NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
96         try {
97             fsetxattr0(filedes, buffer.address(), valueAddress, valueLen);
98         } finally {
99             buffer.release();
100         }
101     }
102 
fsetxattr0(int filedes, long nameAddress, long valueAddress, int valueLen)103     private static native void fsetxattr0(int filedes, long nameAddress,
104         long valueAddress, int valueLen) throws UnixException;
105 
106     /**
107      * fremovexattr(int filedes, const char *name);
108      */
fremovexattr(int filedes, byte[] name)109     static void fremovexattr(int filedes, byte[] name) throws UnixException {
110         NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
111         try {
112             fremovexattr0(filedes, buffer.address());
113         } finally {
114             buffer.release();
115         }
116     }
117 
fremovexattr0(int filedes, long nameAddress)118     private static native void fremovexattr0(int filedes, long nameAddress)
119         throws UnixException;
120 
121     /**
122      * size_t flistxattr(int filedes, const char *list, size_t size)
123      */
flistxattr(int filedes, long listAddress, int size)124     static native int flistxattr(int filedes, long listAddress, int size)
125         throws UnixException;
126 
127     // initialize
init()128     private static native void init();
129 
130     static {
131         jdk.internal.loader.BootLoader.loadLibrary("nio");
init()132         init();
133     }
134 }
135