/*
* Copyright ( c ) 2005 , 2022 , 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 .
*
* 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 .
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*/
/**
* @ test
* @ bug 4057701 6286712 6364377 8181919
* @ requires ( os . family = = " linux " | os . family = = " mac " |
* os . family = = " windows " )
* @ summary Basic functionality of File . get - X - Space methods .
* @ library . . / test / lib
* @ build jdk . test . lib . Platform
* @ run main / othervm - Djava . security . manager = allow GetXSpace
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.FileStore;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.security.Permission;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import jdk.test.lib.Platform;
import jdk.test.lib.Platform;
import static java.lang.System.err;
import static java.lang.System.out;
@SuppressWarnings("removal" )
public class GetXSpace {
private static SecurityManager [] sma = { null , new Allow(), new DenyFSA(),
new DenyRead() };
// FileSystem Total Used Available Use% MountedOn
private static final Pattern DF_PATTERN = Pattern.compile("([^\\s]+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+\\d+%\\s+([^\\s].*)\n" );
private static int fail = 0 ;
private static int pass = 0 ;
private static Throwable first;
static void reset() {
fail = 0 ;
pass = 0 ;
first = null ;
}
static void pass() {
pass++;
}
static void fail(String p) {
setFirst(p);
System.err.format("FAILED: %s%n" , p);
fail++;
}
static void fail(String p, long exp, String cmp, long got) {
String s = String.format("'%s': %d %s %d" , p, exp, cmp, got);
setFirst(s);
System.err.format("FAILED: %s%n" , s);
fail++;
}
private static void fail(String p, Class ex) {
String s = String.format("'%s': expected %s - FAILED%n" , p, ex.getName());
setFirst(s);
System.err.format("FAILED: %s%n" , s);
fail++;
}
private static void setFirst(String s) {
if (first == null ) {
first = new RuntimeException(s);
}
}
private static class Space {
private static final long KSIZE = 1024 ;
private final String name;
private final long total;
private final long used;
private final long available;
Space(String name, String total, String used, String available) {
this .name = name;
try {
this .total = Long .parseLong(total) * KSIZE;
this .used = Long .parseLong(used) * KSIZE;
this .available = Long .parseLong(available) * KSIZE;
} catch (NumberFormatException x) {
throw new RuntimeException("the regex should have caught this" , x);
}
}
String name() { return name; }
long total() { return total; }
long used() { return used; }
long available() { return available; }
long free() { return total - used; }
boolean woomFree(long freeSpace) {
return ((freeSpace >= (available / 10 )) &&
(freeSpace <= (available * 10 )));
}
public String toString() {
return String.format("%s (%d/%d/%d)" , name, total, used, available);
}
}
private static void diskFree() throws IOException {
ArrayList<Space> al = new ArrayList<>();
String cmd = "fsutil volume diskFree C:\\" ;
StringBuilder sb = new StringBuilder();
Process p = Runtime.getRuntime().exec(cmd);
try (BufferedReader in = p.inputReader()) {
String s;
int i = 0 ;
while ((s = in.readLine()) != null ) {
// skip header
if (i++ == 0 ) continue ;
sb.append(s).append("\n" );
}
}
out.println(sb);
}
private static ArrayList<Space> space(String f) throws IOException {
ArrayList<Space> al = new ArrayList<>();
String cmd = "df -k -P" + (f == null ? "" : " " + f);
StringBuilder sb = new StringBuilder();
Process p = Runtime.getRuntime().exec(cmd);
try (BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()))) {
String s;
int i = 0 ;
while ((s = in.readLine()) != null ) {
// skip header
if (i++ == 0 ) continue ;
sb.append(s).append("\n" );
}
}
out.println(sb);
Matcher m = DF_PATTERN.matcher(sb);
int j = 0 ;
while (j < sb.length()) {
if (m.find(j)) {
// swap can change while this test is running
if (!m.group(1 ).equals("swap" )) {
String name = f;
if (name == null ) {
// cygwin's df lists windows path as FileSystem (1st group)
name = Platform.isWindows() ? m.group(1 ) : m.group(5 );
}
al.add(new Space(name, m.group(2 ), m.group(3 ), m.group(4 )));
}
j = m.end();
} else {
throw new RuntimeException("unrecognized df output format: "
+ "charAt(" + j + ") = '"
+ sb.charAt(j) + "'" );
}
}
if (al.size() == 0 ) {
// df did not produce output
String name = (f == null ? "" : f);
al.add(new Space(name, "0" , "0" , "0" ));
}
return al;
}
private static void tryCatch(Space s) {
out.format("%s:%n" , s.name());
File f = new File(s.name());
SecurityManager sm = System.getSecurityManager();
if (sm instanceof Deny) {
String fmt = " %14s: \" %s\" thrown as expected%n" ;
try {
f.getTotalSpace();
fail(s.name(), SecurityException.class );
} catch (SecurityException x) {
out.format(fmt, "getTotalSpace" , x);
pass();
}
try {
f.getFreeSpace();
fail(s.name(), SecurityException.class );
} catch (SecurityException x) {
out.format(fmt, "getFreeSpace" , x);
pass();
}
try {
f.getUsableSpace();
fail(s.name(), SecurityException.class );
} catch (SecurityException x) {
out.format(fmt, "getUsableSpace" , x);
pass();
}
}
}
private static void compare(Space s) {
File f = new File(s.name());
long ts = f.getTotalSpace();
long fs = f.getFreeSpace();
long us = f.getUsableSpace();
out.format("%s:%n" , s.name());
String fmt = " %-4s total = %12d free = %12d usable = %12d%n" ;
out.format(fmt, "df" , s.total(), s.free(), s.available());
out.format(fmt, "getX" , ts, fs, us);
// If the file system can dynamically change size, this check will fail.
// This can happen on macOS for the /dev files system.
if (ts != s.total() && (!Platform.isOSX() || !s.name().equals("/dev" ))) {
long blockSize = 1 ;
long numBlocks = 0 ;
try {
FileStore fileStore = Files.getFileStore(f.toPath());
blockSize = fileStore.getBlockSize();
numBlocks = fileStore.getTotalSpace()/blockSize;
} catch (NoSuchFileException nsfe) {
// On Linux, ignore the NSFE if the path is one of the
// /run/user/$UID mounts created by pam_systemd(8) as it
// might be deleted during the test
if (!Platform.isLinux() || !s.name().contains("/run/user" ))
throw new RuntimeException(nsfe);
} catch (IOException e) {
throw new RuntimeException(e);
}
// On macOS, the number of 1024 byte blocks might be incorrectly
// calculated by 'df' using integer division by 2 of the number of
// 512 byte blocks, resulting in a size smaller than the actual
// value when the number of blocks is odd.
if (!Platform.isOSX() || blockSize != 512 || numBlocks % 2 == 0 ||
ts - s.total() != 512 ) {
if (Platform.isWindows()) {
//
// In Cygwin, 'df' has been observed to account for quotas
// when reporting the total disk size, but the total size
// reported by GetDiskFreeSpaceExW() has been observed not
// to account for the quota in which case the latter value
// should be larger.
//
if (s.total() > ts) {
fail(s.name() + " total space" , s.total(), ">" , ts);
}
} else {
fail(s.name() + " total space" , s.total(), "!=" , ts);
}
}
} else {
pass();
}
// unix df returns statvfs.f_bavail
long tsp = (!Platform.isWindows() ? us : fs);
if (!s.woomFree(tsp)) {
fail(s.name(), s.available(), "??" , tsp);
} else {
pass();
}
if (fs > s.total()) {
fail(s.name(), s.total(), ">" , fs);
} else {
pass();
}
if (us > s.total()) {
fail(s.name(), s.total(), ">" , us);
} else {
pass();
}
}
private static String FILE_PREFIX = "/getSpace." ;
private static void compareZeroNonExist() {
File f;
while (true ) {
f = new File(FILE_PREFIX + Math.random());
if (f.exists()) {
continue ;
}
break ;
}
long [] s = { f.getTotalSpace(), f.getFreeSpace(), f.getUsableSpace() };
for (int i = 0 ; i < s.length; i++) {
if (s[i] != 0 L) {
fail(f.getName(), s[i], "!=" , 0 L);
} else {
pass();
}
}
}
private static void compareZeroExist() {
try {
File f = File.createTempFile("tmp" , null , new File("." ));
long [] s = { f.getTotalSpace(), f.getFreeSpace(), f.getUsableSpace() };
for (int i = 0 ; i < s.length; i++) {
if (s[i] == 0 L) {
fail(f.getName(), s[i], "==" , 0 L);
} else {
pass();
}
}
} catch (IOException x) {
x.printStackTrace();
fail("Couldn't create temp file for test" );
}
}
private static class Allow extends SecurityManager {
public void checkRead(String file) {}
public void checkPermission(Permission p) {}
public void checkPermission(Permission p, Object context) {}
}
private static class Deny extends SecurityManager {
public void checkPermission(Permission p) {
if (p.implies(new RuntimePermission("setSecurityManager" ))
|| p.implies(new RuntimePermission("getProtectionDomain" )))
return ;
super .checkPermission(p);
}
public void checkPermission(Permission p, Object context) {
if (p.implies(new RuntimePermission("setSecurityManager" ))
|| p.implies(new RuntimePermission("getProtectionDomain" )))
return ;
super .checkPermission(p, context);
}
}
private static class DenyFSA extends Deny {
private String err = "sorry - getFileSystemAttributes" ;
public void checkPermission(Permission p) {
if (p.implies(new RuntimePermission("getFileSystemAttributes" )))
throw new SecurityException(err);
super .checkPermission(p);
}
public void checkPermission(Permission p, Object context) {
if (p.implies(new RuntimePermission("getFileSystemAttributes" )))
throw new SecurityException(err);
super .checkPermission(p, context);
}
}
private static class DenyRead extends Deny {
private String err = "sorry - checkRead()" ;
public void checkRead(String file) {
throw new SecurityException(err);
}
}
private static int testFile(Path dir) {
String dirName = dir.toString();
out.format("--- Testing %s%n" , dirName);
ArrayList<Space> l;
try {
l = space(dirName);
} catch (IOException x) {
throw new RuntimeException(dirName + " can't get file system information" , x);
}
compare(l.get(0 ));
if (fail != 0 ) {
err.format("%d tests: %d failure(s); first: %s%n" ,
fail + pass, fail, first);
} else {
out.format("all %d tests passed%n" , fail + pass);
}
return fail != 0 ? 1 : 0 ;
}
private static int testDF() {
out.println("--- Testing df" );
// Find all of the partitions on the machine and verify that the size
// returned by "df" is equivalent to File.getXSpace() values.
ArrayList<Space> l;
try {
l = space(null );
if (Platform.isWindows()) {
diskFree();
}
} catch (IOException x) {
throw new RuntimeException("can't get file system information" , x);
}
if (l.size() == 0 )
throw new RuntimeException("no partitions?" );
for (int i = 0 ; i < sma.length; i++) {
System.setSecurityManager(sma[i]);
SecurityManager sm = System.getSecurityManager();
if (sma[i] != null && sm == null )
throw new RuntimeException("Test configuration error "
+ " - can't set security manager" );
out.format("%nSecurityManager = %s%n" ,
(sm == null ? "null" : sm.getClass().getName()));
for (var s : l) {
if (sm instanceof Deny) {
tryCatch(s);
} else {
compare(s);
compareZeroNonExist();
compareZeroExist();
}
}
}
System.setSecurityManager(null );
if (fail != 0 ) {
err.format("%d tests: %d failure(s); first: %s%n" ,
fail + pass, fail, first);
} else {
out.format("all %d tests passed%n" , fail + pass);
}
return fail != 0 ? 1 : 0 ;
}
private static void perms(File file, boolean allow) throws IOException {
file.setExecutable(allow, false );
file.setReadable(allow, false );
file.setWritable(allow, false );
}
private static void deny(Path path) throws IOException {
perms(path.toFile(), false );
}
private static void allow(Path path) throws IOException {
perms(path.toFile(), true );
}
public static void main(String[] args) throws Exception {
int failedTests = testDF();
reset();
Path tmpDir = Files.createTempDirectory(null );
Path tmpSubdir = Files.createTempDirectory(tmpDir, null );
Path tmpFile = Files.createTempFile(tmpSubdir, "foo" , null );
deny(tmpSubdir);
failedTests += testFile(tmpFile);
allow(tmpSubdir);
Files.delete (tmpFile);
Files.delete (tmpSubdir);
Files.delete (tmpDir);
if (failedTests > 0 ) {
throw new RuntimeException(failedTests + " test(s) failed" );
}
}
}
Messung V0.5 in Prozent C=94 H=91 G=92
¤ Dauer der Verarbeitung: 0.8 Sekunden
¤
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