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 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 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 67 static native int getmntent0(long fp, UnixMountEntry entry, long buffer, int bufLen) 68 throws UnixException; 69 70 /** 71 * int endmntent(FILE* filep); 72 */ 73 static native void endmntent(long stream) throws UnixException; 74 75 /** 76 * ssize_t getline(char **lineptr, size_t *n, FILE *stream); 77 */ 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 */ 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 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 */ 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 } 110 111 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 */ 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 } 125 126 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 */ 132 static native int flistxattr(int filedes, long listAddress, int size) 133 throws UnixException; 134 135 // initialize 136 private static native void init(); 137 138 static { 139 AccessController.doPrivileged(new PrivilegedAction<Void>() { 140 public Void run() { 141 System.loadLibrary("nio"); 142 return null; 143 }}); 144 init(); 145 } 146 }