Home | History | Annotate | Download | only in fs 
      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 {
     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 valueAdddress, 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 valueAdddress, 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         // Android-removed: Code to load native libraries, doesn't make sense on Android.
    125         /*
    126         AccessController.doPrivileged(new PrivilegedAction<Void>() {
    127             public Void run() {
    128                 System.loadLibrary("nio");
    129                 return null;
    130         }});
    131         */
    132         init();
    133     }
    134 }
    135