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/*
* Copyright (c) 2008, 2013, 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;
import java.util.*;
import static sun.nio.fs.LinuxNativeDispatcher.*;
/**
* Linux implementation of FileSystem
*/
class LinuxFileSystem extends UnixFileSystem {
LinuxFileSystem(UnixFileSystemProvider provider, String dir) {
super(provider, dir);
}
@Override
public WatchService newWatchService()
throws IOException
{
// assume 2.6.13 or newer
return new LinuxWatchService(this);
}
// lazy initialization of the list of supported attribute views
private static class SupportedFileFileAttributeViewsHolder {
static final Set<String> supportedFileAttributeViews =
supportedFileAttributeViews();
private static Set<String> supportedFileAttributeViews() {
Set<String> result = new HashSet<>();
result.addAll(standardFileAttributeViews());
// additional Linux-specific views
result.add("dos");
result.add("user");
return Collections.unmodifiableSet(result);
}
}
@Override
public Set<String> supportedFileAttributeViews() {
return SupportedFileFileAttributeViewsHolder.supportedFileAttributeViews;
}
@Override
void copyNonPosixAttributes(int ofd, int nfd) {
LinuxUserDefinedFileAttributeView.copyExtendedAttributes(ofd, nfd);
}
/**
* Returns object to iterate over the mount entries in the given fstab file.
*/
Iterable<UnixMountEntry> getMountEntries(String fstab) {
ArrayList<UnixMountEntry> entries = new ArrayList<>();
try {
long fp = setmntent(Util.toBytes(fstab), Util.toBytes("r"));
try {
for (;;) {
UnixMountEntry entry = new UnixMountEntry();
int res = getmntent(fp, entry);
if (res < 0)
break;
entries.add(entry);
}
} finally {
endmntent(fp);
}
} catch (UnixException x) {
// nothing we can do
}
return entries;
}
/**
* Returns object to iterate over the mount entries in /etc/mtab
*/
@Override
Iterable<UnixMountEntry> getMountEntries() {
// Android-changed: As /etc/mtab is not available in Android, therefore, using /proc/mounts
// instead.
return getMountEntries("/proc/mounts");
}
@Override
FileStore getFileStore(UnixMountEntry entry) throws IOException {
return new LinuxFileStore(this, entry);
}
}
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