| /* |
| * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.nio.fs; |
| |
| import java.nio.file.*; |
| import java.io.IOException; |
| |
| /** |
| * Internal exception thrown by native methods when error detected. |
| */ |
| |
| class UnixException extends Exception { |
| static final long serialVersionUID = 7227016794320723218L; |
| |
| private int errno; |
| private String msg; |
| |
| UnixException(int errno) { |
| this.errno = errno; |
| this.msg = null; |
| } |
| |
| UnixException(String msg) { |
| this.errno = 0; |
| this.msg = msg; |
| } |
| |
| int errno() { |
| return errno; |
| } |
| |
| void setError(int errno) { |
| this.errno = errno; |
| this.msg = null; |
| } |
| |
| String errorString() { |
| if (msg != null) { |
| return msg; |
| } else { |
| return Util.toString(UnixNativeDispatcher.strerror(errno())); |
| } |
| } |
| |
| @Override |
| public String getMessage() { |
| return errorString(); |
| } |
| |
| @Override |
| public Throwable fillInStackTrace() { |
| // This is an internal exception; the stack trace is irrelevant. |
| return this; |
| } |
| |
| /** |
| * Map well known errors to specific exceptions where possible; otherwise |
| * return more general FileSystemException. |
| */ |
| private IOException translateToIOException(String file, String other) { |
| // created with message rather than errno |
| if (msg != null) |
| return new IOException(msg); |
| |
| // handle specific cases |
| if (errno() == UnixConstants.EACCES) |
| return new AccessDeniedException(file, other, null); |
| if (errno() == UnixConstants.ENOENT) |
| return new NoSuchFileException(file, other, null); |
| if (errno() == UnixConstants.EEXIST) |
| return new FileAlreadyExistsException(file, other, null); |
| if (errno() == UnixConstants.ELOOP) |
| return new FileSystemException(file, other, errorString() |
| + " or unable to access attributes of symbolic link"); |
| |
| // fallback to the more general exception |
| return new FileSystemException(file, other, errorString()); |
| } |
| |
| void rethrowAsIOException(String file) throws IOException { |
| IOException x = translateToIOException(file, null); |
| throw x; |
| } |
| |
| void rethrowAsIOException(UnixPath file, UnixPath other) throws IOException { |
| String a = (file == null) ? null : file.getPathForExceptionMessage(); |
| String b = (other == null) ? null : other.getPathForExceptionMessage(); |
| IOException x = translateToIOException(a, b); |
| throw x; |
| } |
| |
| void rethrowAsIOException(UnixPath file) throws IOException { |
| rethrowAsIOException(file, null); |
| } |
| |
| IOException asIOException(UnixPath file) { |
| return translateToIOException(file.getPathForExceptionMessage(), null); |
| } |
| } |