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/**
* Oshi (https://github.com/dblock/oshi)
*
* Copyright (c) 2010 - 2016 The Oshi Project Team
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Maintainers:
* dblock[at]dblock[dot]org
* widdis[at]gmail[dot]com
* enrico.bianchi[at]gmail[dot]com
*
* Contributors:
* https://github.com/dblock/oshi/graphs/contributors
*/
package oshi.software.os.windows;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.sun.jna.platform.win32.WinNT;
import oshi.jna.platform.windows.Kernel32;
import oshi.software.os.FileSystem;
import oshi.software.os.OSFileStore;
import oshi.util.ParseUtil;
import oshi.util.platform.windows.WmiUtil;
/**
* The Windows File System contains {@link OSFileStore}s which are a storage
* pool, device, partition, volume, concrete file system or other implementation
* specific means of file storage. In Windows, these are represented by a drive
* letter, e.g., "A:\" and "C:\"
*
* @author enrico[dot]bianchi[at]gmail[dot]com
*/
public class WindowsFileSystem implements FileSystem {
private static final long serialVersionUID = 1L;
private static final int BUFSIZE = 255;
public WindowsFileSystem() {
// Set error mode to fail rather than prompt for FLoppy/CD-Rom
Kernel32.INSTANCE.SetErrorMode(Kernel32.SEM_FAILCRITICALERRORS);
}
/**
* Gets File System Information.
*
* @return An array of {@link OSFileStore} objects representing mounted
* volumes. May return disconnected volumes with
* {@link OSFileStore#getTotalSpace()} = 0.
*/
@Override
public OSFileStore[] getFileStores() {
// Create list to hold results
ArrayList result;
// Begin with all the local volumes
result = getLocalVolumes();
// Build a map of existing mount point to OSFileStore
Map volumeMap = new HashMap<>();
for (OSFileStore volume : result) {
volumeMap.put(volume.getMount(), volume);
}
// Iterate through volumes in WMI and update description (if it exists)
// or add new if it doesn't (expected for network drives)
for (OSFileStore wmiVolume : getWmiVolumes()) {
if (volumeMap.containsKey(wmiVolume.getMount())) {
// If the volume is already in our list, update the name field
// using WMI's more verbose name
volumeMap.get(wmiVolume.getMount()).setName(wmiVolume.getName());
} else {
// Otherwise add the new volume in its entirety
result.add(wmiVolume);
}
}
return result.toArray(new OSFileStore[result.size()]);
}
/**
* Private method for getting all mounted local drives.
*
* @return A list of {@link OSFileStore} objects representing all local
* mounted volumes
*/
private ArrayList getLocalVolumes() {
ArrayList fs;
String volume;
String strFsType;
String strName;
String strMount;
WinNT.HANDLE hVol;
WinNT.LARGE_INTEGER userFreeBytes;
WinNT.LARGE_INTEGER totalBytes;
WinNT.LARGE_INTEGER systemFreeBytes;
boolean retVal;
char[] aVolume;
char[] fstype;
char[] name;
char[] mount;
fs = new ArrayList<>();
aVolume = new char[BUFSIZE];
hVol = Kernel32.INSTANCE.FindFirstVolume(aVolume, BUFSIZE);
if (hVol == WinNT.INVALID_HANDLE_VALUE) {
return fs;
}
while (true) {
fstype = new char[16];
name = new char[BUFSIZE];
mount = new char[BUFSIZE];
userFreeBytes = new WinNT.LARGE_INTEGER(0L);
totalBytes = new WinNT.LARGE_INTEGER(0L);
systemFreeBytes = new WinNT.LARGE_INTEGER(0L);
volume = new String(aVolume).trim();
Kernel32.INSTANCE.GetVolumeInformation(volume, name, BUFSIZE, null, null, null, fstype, 16);
Kernel32.INSTANCE.GetVolumePathNamesForVolumeName(volume, mount, BUFSIZE, null);
Kernel32.INSTANCE.GetDiskFreeSpaceEx(volume, userFreeBytes, totalBytes, systemFreeBytes);
strMount = new String(mount).trim();
strName = new String(name).trim();
strFsType = new String(fstype).trim();
// Parse uuid from volume name
String uuid = ParseUtil.parseUuidOrDefault(volume, "");
if (!strMount.isEmpty()) {
// Volume is mounted
fs.add(new OSFileStore(String.format("%s (%s)", strName, strMount), volume, strMount,
getDriveType(strMount), strFsType, uuid, systemFreeBytes.getValue(), totalBytes.getValue()));
}
retVal = Kernel32.INSTANCE.FindNextVolume(hVol, aVolume, BUFSIZE);
if (!retVal) {
Kernel32.INSTANCE.FindVolumeClose(hVol);
break;
}
}
return fs;
}
/**
* Private method for getting logical drives listed in WMI.
*
* @return A list of {@link OSFileStore} objects representing all network
* mounted volumes
*/
private List getWmiVolumes() {
Map> drives;
List fs;
String volume;
long free;
long total;
fs = new ArrayList<>();
drives = WmiUtil.selectStringsFrom(null, "Win32_LogicalDisk",
"Name,Description,ProviderName,FileSystem,Freespace,Size", null);
for (int i = 0; i < drives.get("Name").size(); i++) {
free = ParseUtil.parseLongOrDefault(drives.get("Freespace").get(i), 0L);
total = ParseUtil.parseLongOrDefault(drives.get("Size").get(i), 0L);
String description = drives.get("Description").get(i);
long type = WmiUtil.selectUint32From(null, "Win32_LogicalDisk", "DriveType",
"WHERE Name = '" + drives.get("Name").get(i) + "'");
if (type != 4) {
char[] chrVolume = new char[BUFSIZE];
Kernel32.INSTANCE.GetVolumeNameForVolumeMountPoint(drives.get("Name").get(i) + "\\", chrVolume,
BUFSIZE);
volume = new String(chrVolume).trim();
} else {
volume = drives.get("ProviderName").get(i);
String[] split = volume.split("\\\\");
if (split.length > 1 && split[split.length - 1].length() > 0) {
description = split[split.length - 1];
}
}
fs.add(new OSFileStore(String.format("%s (%s)", description, drives.get("Name").get(i)), volume,
drives.get("Name").get(i) + "\\", getDriveType(drives.get("Name").get(i)),
drives.get("FileSystem").get(i), "", free, total));
}
return fs;
}
/**
* Private method for getting mounted drive type.
*
* @param drive
* Mounted drive
* @return A drive type description
*/
private String getDriveType(String drive) {
switch (Kernel32.INSTANCE.GetDriveType(drive)) {
case 2:
return "Removable drive";
case 3:
return "Fixed drive";
case 4:
return "Network drive";
case 5:
return "CD-ROM";
case 6:
return "RAM drive";
default:
return "Unknown drive type";
}
}
@Override
public long getOpenFileDescriptors() {
return 0L;
}
@Override
public long getMaxFileDescriptors() {
return 0L;
}
}
