Skip to content

Instantly share code, notes, and snippets.

@ecki ecki/Filesystems.java
Last active Jul 29, 2018

Embed
What would you like to do?
Mising named mounts on Windows (Java FileStore)
/* License: ASL2 */
package net.eckenfels.test.javasystemtest;
import java.io.File;
import java.io.IOException;
import java.nio.file.FileStore;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.spi.FileSystemProvider;
public class Filesystems
{
static final double MB = 1024 * 1024;
public static void main(String[] args)
throws IOException
{
FileSystem fs = FileSystems.getDefault(); // close?
// list of roots does not contain named mounts on windows:
Iterable<Path> roots = fs.getRootDirectories();
for (Path f : roots)
{
System.out.printf("root dir %s%n", f.toString());
}
System.out.println();
// list of filestores does not either
Iterable<FileStore> rootStores = fs.getFileStores();
printStores(rootStores);
System.out.println("--");
// directly addressed the volume shows
Path disk = Paths.get("C:", "temp", "disk").toAbsolutePath();
FileStore fss = Files.getFileStore(disk);
printStore(fss);
//Path vol = Paths.get("\\\\?\\Volume{ff0418c4-f533-11df-80e2-806e6f6e6963}\\").toAbsolutePath();
}
private static void printStores(Iterable<FileStore> stores)
{
stores.iterator().forEachRemaining(Filesystems::printStore);
}
private static void printStore(FileStore f)
{
try
{
// extract attributes
String vsn = getAtt(f, "volume:vsn");
String isRemovable = getAtt(f, "volume:isRemovable");
String isCdrom = getAtt(f, "volume:isCdrom");
// extract mount point
String root = f.toString();
root = "/" + root.substring(root.lastIndexOf('(') + 1, root.lastIndexOf(')')) + "\\";
Path rootPath;
rootPath = new File(root).getCanonicalFile().toPath();
// more attributes
//String owner = Files.getOwner(rootPath).getName();
System.out.printf("%-40s %-10s %,10.2f MB %,10.2f MB %s r?=%s cd?=%s vsn=%s on %s%n",
f.toString(),
"(" + f.type() + ")",
f.getUsableSpace() / MB,
f.getTotalSpace() / MB,
(f.isReadOnly() ? "ro" : "rw"),
isRemovable,
isCdrom,
vsn,
rootPath
//,owner
);
}
catch (IOException e)
{
// streams buster
throw new RuntimeException(e);
}
}
private static String getAtt(FileStore f, String name)
{
try
{
Object result = f.getAttribute(name);
if (result == null)
return "-";
if (result instanceof Boolean)
{
return ((Boolean)result).toString();
}
if (result instanceof String)
{
return ((String)result).trim();
}
if (result instanceof Integer)
{
String hex = Integer.toUnsignedString(((Integer)result).intValue(),16);
return hex.substring(0, 4) + "-" + hex.substring(4,8) + " " + Integer.toUnsignedString(((Integer)result).intValue());
}
return String.valueOf(result);
}
catch (Exception ignored)
{ /* do nothing */ }
return "N/A";
}
}
root dir C:\
root dir D:\
(C:) (NTFS) 16.468,45 MB 243.303,05 MB rw r?=false cd?=false vsn=a01e-2816 2686330902 on C:\
MYLINUXLIVE (D:) (FAT32) 226,73 MB 957,50 MB rw r?=true cd?=false vsn=54f2-5a04 1425168900 on D:\
--
vdisk (C:\temp\disk) (NTFS) 3,27 MB 7,00 MB rw r?=false cd?=false vsn=da5c-2af1 3663473393 on C:\temp\disk
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.