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
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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      */
57 
getmntent(long fp, UnixMountEntry entry, int buflen)58     static int getmntent(long fp, UnixMountEntry entry, int buflen) throws UnixException {
59         NativeBuffer buffer = NativeBuffers.getNativeBuffer(buflen);
60         try {
61             return getmntent0(fp, entry, buffer.address(), buflen);
62         } finally {
63             buffer.release();
64         }
65     }
66 
getmntent0(long fp, UnixMountEntry entry, long buffer, int bufLen)67     static native int getmntent0(long fp, UnixMountEntry entry, long buffer, int bufLen)
68         throws UnixException;
69 
70     /**
71      * int endmntent(FILE* filep);
72      */
endmntent(long stream)73     static native void endmntent(long stream) throws UnixException;
74 
75     /**
76      * ssize_t getline(char **lineptr, size_t *n, FILE *stream);
77      */
getlinelen(long stream)78     static native int getlinelen(long stream) throws UnixException;
79 
80     /**
81      * ssize_t fgetxattr(int filedes, const char *name, void *value, size_t size);
82      */
fgetxattr(int filedes, byte[] name, long valueAddress, int valueLen)83     static int fgetxattr(int filedes, byte[] name, long valueAddress,
84                          int valueLen) throws UnixException
85     {
86         NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
87         try {
88             return fgetxattr0(filedes, buffer.address(), valueAddress, valueLen);
89         } finally {
90             buffer.release();
91         }
92     }
93 
fgetxattr0(int filedes, long nameAddress, long valueAdddress, int valueLen)94     private static native int fgetxattr0(int filedes, long nameAddress,
95         long valueAdddress, int valueLen) throws UnixException;
96 
97     /**
98      *  fsetxattr(int filedes, const char *name, const void *value, size_t size, int flags);
99      */
fsetxattr(int filedes, byte[] name, long valueAddress, int valueLen)100     static void fsetxattr(int filedes, byte[] name, long valueAddress,
101         int valueLen) throws UnixException
102     {
103         NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
104         try {
105             fsetxattr0(filedes, buffer.address(), valueAddress, valueLen);
106         } finally {
107             buffer.release();
108         }
109     }
110 
fsetxattr0(int filedes, long nameAddress, long valueAdddress, int valueLen)111     private static native void fsetxattr0(int filedes, long nameAddress,
112         long valueAdddress, int valueLen) throws UnixException;
113 
114     /**
115      * fremovexattr(int filedes, const char *name);
116      */
fremovexattr(int filedes, byte[] name)117     static void fremovexattr(int filedes, byte[] name) throws UnixException {
118         NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);
119         try {
120             fremovexattr0(filedes, buffer.address());
121         } finally {
122             buffer.release();
123         }
124     }
125 
fremovexattr0(int filedes, long nameAddress)126     private static native void fremovexattr0(int filedes, long nameAddress)
127         throws UnixException;
128 
129     /**
130      * size_t flistxattr(int filedes, const char *list, size_t size)
131      */
flistxattr(int filedes, long listAddress, int size)132     static native int flistxattr(int filedes, long listAddress, int size)
133         throws UnixException;
134 
135     // initialize
init()136     private static native void init();
137 
138     static {
AccessController.doPrivileged(new PrivilegedAction<Void>() { public Void run() { System.loadLibrary(R); return null; }})139         AccessController.doPrivileged(new PrivilegedAction<Void>() {
140             public Void run() {
141                 System.loadLibrary("nio");
142                 return null;
143         }});
init()144         init();
145     }
146 }
147