1 /*

     2  * Copyright 2008-2009 Sun Microsystems, Inc.  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.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.nio.fs;

    27 

    28 import java.io.IOException;

    29 

    30 import static sun.nio.fs.UnixNativeDispatcher.*;

    31 import static sun.nio.fs.SolarisConstants.*;

    32 

    33 /**

    34  * Solaris implementation of FileStore

    35  */

    36 

    37 class SolarisFileStore

    38     extends UnixFileStore

    39 {

    40     private final boolean xattrEnabled;

    41 

    42     SolarisFileStore(UnixPath file) throws IOException {

    43         super(file);

    44         this.xattrEnabled = xattrEnabled();

    45     }

    46 

    47     SolarisFileStore(UnixFileSystem fs, UnixMountEntry entry) throws IOException {

    48         super(fs, entry);

    49         this.xattrEnabled = xattrEnabled();

    50     }

    51 

    52     // returns true if extended attributes enabled

    53     private boolean xattrEnabled() {

    54         long res = 0L;

    55         try {

    56             res = pathconf(file(), _PC_XATTR_ENABLED);

    57         } catch (UnixException x) {

    58             // ignore

    59         }

    60         return (res != 0L);

    61     }

    62 

    63     @Override

    64     UnixMountEntry findMountEntry() throws IOException {

    65         // On Solaris iterate over the entries in the mount table to find device

    66         for (UnixMountEntry entry: file().getFileSystem().getMountEntries()) {

    67             if (entry.dev() == dev()) {

    68                 return entry;

    69             }

    70         }

    71         throw new IOException("Device not found in mnttab");

    72     }

    73 

    74     @Override

    75     public boolean supportsFileAttributeView(String name) {

    76         if (name.equals("acl")) {

    77             // lookup fstypes.properties

    78             FeatureStatus status = checkIfFeaturePresent("nfsv4acl");

    79             if (status == FeatureStatus.PRESENT)

    80                 return true;

    81             if (status == FeatureStatus.NOT_PRESENT)

    82                 return false;

    83             // AclFileAttributeView available on ZFS

    84             return (type().equals("zfs"));

    85         }

    86         if (name.equals("xattr")) {

    87             // lookup fstypes.properties

    88             FeatureStatus status = checkIfFeaturePresent("xattr");

    89             if (status == FeatureStatus.PRESENT)

    90                 return true;

    91             if (status == FeatureStatus.NOT_PRESENT)

    92                 return false;

    93             return xattrEnabled;

    94         }

    95 

    96         return super.supportsFileAttributeView(name);

    97     }

    98 

    99     @Override

   100     boolean isLoopback() {

   101         return type().equals("lofs");

   102     }

   103 }