1 /* 2 * Copyright (c) 2008, 2009, 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.nio.file.*; 29 import java.io.IOException; 30 31 import static sun.nio.fs.WindowsConstants.*; 32 33 /** 34 * Internal exception thrown when a Win32 calls fails. 35 */ 36 37 class WindowsException extends Exception { 38 static final long serialVersionUID = 2765039493083748820L; 39 40 private int lastError; 41 private String msg; 42 43 WindowsException(int lastError) { 44 this.lastError = lastError; 45 this.msg = null; 46 } 47 48 WindowsException(String msg) { 49 this.lastError = 0; 50 this.msg = msg; 51 } 52 53 int lastError() { 54 return lastError; 55 } 56 57 String errorString() { 58 if (msg == null) { 59 msg = WindowsNativeDispatcher.FormatMessage(lastError); 60 if (msg == null) { 61 msg = "Unknown error: 0x" + Integer.toHexString(lastError); 62 } 63 } 64 return msg; 65 } 66 67 @Override 68 public String getMessage() { 69 return errorString(); 70 } 71 72 @Override 73 public Throwable fillInStackTrace() { 74 // This is an internal exception, the stack trace is irrelevant. 75 // translateTo* methods would start the stack trace over. 76 return this; 77 } 78 79 private IOException translateToIOException(String file, String other) { 80 // not created with last error 81 if (lastError() == 0) 82 return new IOException(errorString()); 83 84 // handle specific cases 85 if (lastError() == ERROR_FILE_NOT_FOUND || lastError() == ERROR_PATH_NOT_FOUND) 86 return new NoSuchFileException(file, other, null); 87 if (lastError() == ERROR_FILE_EXISTS || lastError() == ERROR_ALREADY_EXISTS) 88 return new FileAlreadyExistsException(file, other, null); 89 if (lastError() == ERROR_ACCESS_DENIED) 90 return new AccessDeniedException(file, other, null); 91 92 // fallback to the more general exception 93 return new FileSystemException(file, other, errorString()); 94 } 95 96 void rethrowAsIOException(String file) throws IOException { 97 IOException x = translateToIOException(file, null); 98 throw x; 99 } 100 101 void rethrowAsIOException(WindowsPath file, WindowsPath other) throws IOException { 102 String a = (file == null) ? null : file.getPathForExceptionMessage(); 103 String b = (other == null) ? null : other.getPathForExceptionMessage(); 104 IOException x = translateToIOException(a, b); 105 throw x; 106 } 107 108 void rethrowAsIOException(WindowsPath file) throws IOException { 109 rethrowAsIOException(file, null); 110 } 111 112 IOException asIOException(WindowsPath file) { 113 return translateToIOException(file.getPathForExceptionMessage(), null); 114 } 115 116 }