377 lines
12 KiB
Java
377 lines
12 KiB
Java
/*
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* Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 4057701 6286712 6364377
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* @run build GetXSpace
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* @run shell GetXSpace.sh
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* @summary Basic functionality of File.get-X-Space methods.
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* @key randomness
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*/
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FilePermission;
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import java.io.InputStreamReader;
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import java.io.IOException;
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import java.security.Permission;
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import java.util.ArrayList;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import static java.lang.System.out;
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public class GetXSpace {
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private static SecurityManager [] sma = { null, new Allow(), new DenyFSA(),
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new DenyRead() };
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private static final String osName = System.getProperty("os.name");
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// FileSystem Total Used Available Use% MountedOn
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private static final Pattern dfPattern = Pattern.compile("([^\\s]+)\\s+(\\d+)\\s+\\d+\\s+(\\d+)\\s+\\d+%\\s+([^\\s].*)\n");
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private static int fail = 0;
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private static int pass = 0;
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private static Throwable first;
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static void pass() {
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pass++;
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}
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static void fail(String p) {
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setFirst(p);
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System.err.format("FAILED: %s%n", p);
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fail++;
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}
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static void fail(String p, long exp, String cmp, long got) {
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String s = String.format("'%s': %d %s %d", p, exp, cmp, got);
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setFirst(s);
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System.err.format("FAILED: %s%n", s);
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fail++;
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}
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private static void fail(String p, Class ex) {
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String s = String.format("'%s': expected %s - FAILED%n", p, ex.getName());
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setFirst(s);
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System.err.format("FAILED: %s%n", s);
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fail++;
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}
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private static void setFirst(String s) {
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if (first == null) {
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first = new RuntimeException(s);
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}
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}
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private static class Space {
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private static final long KSIZE = 1024;
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private final String name;
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private final long total;
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private final long free;
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Space(String total, String free, String name) {
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try {
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this.total = Long.valueOf(total) * KSIZE;
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this.free = Long.valueOf(free) * KSIZE;
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} catch (NumberFormatException x) {
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throw new RuntimeException("the regex should have caught this", x);
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}
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this.name = name;
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}
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String name() { return name; }
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long total() { return total; }
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long free() { return free; }
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boolean woomFree(long freeSpace) {
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return ((freeSpace >= (free / 10)) && (freeSpace <= (free * 10)));
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}
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public String toString() {
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return String.format("%s (%d/%d)", name, free, total);
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}
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}
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private static ArrayList<Space> space(String f) throws IOException {
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ArrayList<Space> al = new ArrayList<>();
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String cmd = "df -k -P" + (f == null ? "" : " " + f);
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StringBuilder sb = new StringBuilder();
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Process p = Runtime.getRuntime().exec(cmd);
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try (BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()))) {
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String s;
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int i = 0;
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while ((s = in.readLine()) != null) {
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// skip header
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if (i++ == 0) continue;
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sb.append(s).append("\n");
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}
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}
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out.println(sb);
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Matcher m = dfPattern.matcher(sb);
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int j = 0;
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while (j < sb.length()) {
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if (m.find(j)) {
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// swap can change while this test is running
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if (!m.group(1).equals("swap")) {
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String name = f;
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if (name == null) {
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// cygwin's df lists windows path as FileSystem (1st group)
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name = osName.startsWith("Windows") ? m.group(1) : m.group(4);
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}
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al.add(new Space(m.group(2), m.group(3), name));;
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}
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j = m.end() + 1;
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} else {
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throw new RuntimeException("unrecognized df output format: "
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+ "charAt(" + j + ") = '"
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+ sb.charAt(j) + "'");
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}
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}
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if (al.size() == 0) {
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// df did not produce output
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String name = (f == null ? "" : f);
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al.add(new Space("0", "0", name));
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}
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return al;
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}
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private static void tryCatch(Space s) {
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out.format("%s:%n", s.name());
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File f = new File(s.name());
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SecurityManager sm = System.getSecurityManager();
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if (sm instanceof Deny) {
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String fmt = " %14s: \"%s\" thrown as expected%n";
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try {
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f.getTotalSpace();
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fail(s.name(), SecurityException.class);
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} catch (SecurityException x) {
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out.format(fmt, "getTotalSpace", x);
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pass();
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}
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try {
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f.getFreeSpace();
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fail(s.name(), SecurityException.class);
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} catch (SecurityException x) {
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out.format(fmt, "getFreeSpace", x);
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pass();
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}
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try {
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f.getUsableSpace();
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fail(s.name(), SecurityException.class);
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} catch (SecurityException x) {
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out.format(fmt, "getUsableSpace", x);
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pass();
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}
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}
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}
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private static void compare(Space s) {
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File f = new File(s.name());
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long ts = f.getTotalSpace();
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long fs = f.getFreeSpace();
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long us = f.getUsableSpace();
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out.format("%s:%n", s.name());
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String fmt = " %-4s total= %12d free = %12d usable = %12d%n";
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out.format(fmt, "df", s.total(), 0, s.free());
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out.format(fmt, "getX", ts, fs, us);
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// if the file system can dynamically change size, this check will fail
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if (ts != s.total()) {
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fail(s.name(), s.total(), "!=", ts);
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} else {
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pass();
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}
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// unix df returns statvfs.f_bavail
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long tsp = (!osName.startsWith("Windows") ? us : fs);
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if (!s.woomFree(tsp)) {
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fail(s.name(), s.free(), "??", tsp);
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} else {
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pass();
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}
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if (fs > s.total()) {
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fail(s.name(), s.total(), ">", fs);
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} else {
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pass();
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}
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if (us > s.total()) {
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fail(s.name(), s.total(), ">", us);
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} else {
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pass();
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}
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}
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private static String FILE_PREFIX = "/getSpace.";
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private static void compareZeroNonExist() {
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File f;
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while (true) {
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f = new File(FILE_PREFIX + Math.random());
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if (f.exists()) {
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continue;
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}
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break;
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}
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long [] s = { f.getTotalSpace(), f.getFreeSpace(), f.getUsableSpace() };
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for (int i = 0; i < s.length; i++) {
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if (s[i] != 0L) {
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fail(f.getName(), s[i], "!=", 0L);
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} else {
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pass();
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}
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}
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}
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private static void compareZeroExist() {
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try {
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File f = File.createTempFile("tmp", null, new File("."));
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long [] s = { f.getTotalSpace(), f.getFreeSpace(), f.getUsableSpace() };
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for (int i = 0; i < s.length; i++) {
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if (s[i] == 0L) {
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fail(f.getName(), s[i], "==", 0L);
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} else {
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pass();
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}
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}
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} catch (IOException x) {
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x.printStackTrace();
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fail("Couldn't create temp file for test");
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}
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}
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private static class Allow extends SecurityManager {
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public void checkRead(String file) {}
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public void checkPermission(Permission p) {}
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public void checkPermission(Permission p, Object context) {}
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}
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private static class Deny extends SecurityManager {
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public void checkPermission(Permission p) {
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if (p.implies(new RuntimePermission("setSecurityManager"))
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|| p.implies(new RuntimePermission("getProtectionDomain")))
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return;
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super.checkPermission(p);
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}
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public void checkPermission(Permission p, Object context) {
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if (p.implies(new RuntimePermission("setSecurityManager"))
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|| p.implies(new RuntimePermission("getProtectionDomain")))
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return;
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super.checkPermission(p, context);
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}
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}
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private static class DenyFSA extends Deny {
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private String err = "sorry - getFileSystemAttributes";
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public void checkPermission(Permission p) {
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if (p.implies(new RuntimePermission("getFileSystemAttributes")))
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throw new SecurityException(err);
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super.checkPermission(p);
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}
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public void checkPermission(Permission p, Object context) {
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if (p.implies(new RuntimePermission("getFileSystemAttributes")))
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throw new SecurityException(err);
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super.checkPermission(p, context);
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}
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}
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private static class DenyRead extends Deny {
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private String err = "sorry - checkRead()";
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public void checkRead(String file) {
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throw new SecurityException(err);
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}
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}
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private static void testFile(String dirName) {
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out.format("--- Testing %s%n", dirName);
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ArrayList<Space> l;
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try {
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l = space(dirName);
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} catch (IOException x) {
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throw new RuntimeException(dirName + " can't get file system information", x);
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}
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compare(l.get(0));
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}
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private static void testDF() {
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out.println("--- Testing df");
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// Find all of the partitions on the machine and verify that the size
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// returned by "df" is equivalent to File.getXSpace() values.
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ArrayList<Space> l;
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try {
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l = space(null);
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} catch (IOException x) {
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throw new RuntimeException("can't get file system information", x);
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}
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if (l.size() == 0)
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throw new RuntimeException("no partitions?");
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for (int i = 0; i < sma.length; i++) {
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System.setSecurityManager(sma[i]);
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SecurityManager sm = System.getSecurityManager();
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if (sma[i] != null && sm == null)
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throw new RuntimeException("Test configuration error "
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+ " - can't set security manager");
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out.format("%nSecurityManager = %s%n" ,
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(sm == null ? "null" : sm.getClass().getName()));
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for (var s : l) {
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if (sm instanceof Deny) {
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tryCatch(s);
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} else {
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compare(s);
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compareZeroNonExist();
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compareZeroExist();
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}
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}
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}
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}
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public static void main(String [] args) {
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if (args.length > 0) {
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testFile(args[0]);
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} else {
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testDF();
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}
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if (fail != 0) {
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throw new RuntimeException((fail + pass) + " tests: "
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+ fail + " failure(s), first", first);
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} else {
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out.format("all %d tests passed%n", fail + pass);
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}
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}
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}
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