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.nio.file.attribute.*; 29 import java.util.*; 30 import java.io.IOException; 31 32 /** 33 * Bsd implementation of FileStore 34 */ 35 36 class BsdFileStore 37 extends UnixFileStore 38 { 39 BsdFileStore(UnixPath file) throws IOException { 40 super(file); 41 } 42 43 BsdFileStore(UnixFileSystem fs, UnixMountEntry entry) throws IOException { 44 super(fs, entry); 45 } 46 47 /** 48 * Finds, and returns, the mount entry for the file system where the file 49 * resides. 50 */ 51 @Override 52 UnixMountEntry findMountEntry() throws IOException { 53 UnixFileSystem fs = file().getFileSystem(); 54 55 // step 1: get realpath 56 UnixPath path = null; 57 try { 58 byte[] rp = UnixNativeDispatcher.realpath(file()); 59 path = new UnixPath(fs, rp); 60 } catch (UnixException x) { 61 x.rethrowAsIOException(file()); 62 } 63 64 // step 2: find mount point 65 byte[] dir = null; 66 try { 67 dir = BsdNativeDispatcher.getmntonname(path); 68 } catch (UnixException x) { 69 x.rethrowAsIOException(path); 70 } 71 72 // step 3: lookup mounted file systems 73 for (UnixMountEntry entry: fs.getMountEntries()) { 74 if (Arrays.equals(dir, entry.dir())) 75 return entry; 76 } 77 78 throw new IOException("Mount point not found in fstab"); 79 } 80 }