true if and only if the file specified by this
* abstract pathname exists and can be read by the
@@ -732,7 +735,10 @@
/**
* Tests whether the application can modify the file denoted by this
- * abstract pathname.
+ * abstract pathname. On some platforms it may be possible to start the
+ * Java virtual machine with special privileges that allow it to modify
+ * files that are marked read-only. Consequently this method may return
+ * {@code true} even though the file is marked read-only.
*
* @return true if and only if the file system actually
* contains a file denoted by this abstract pathname and
@@ -1351,9 +1357,11 @@
/**
* Marks the file or directory named by this abstract pathname so that
- * only read operations are allowed. After invoking this method the file
- * or directory is guaranteed not to change until it is either deleted or
- * marked to allow write access. Whether or not a read-only file or
+ * only read operations are allowed. After invoking this method the file
+ * or directory will not change until it is either deleted or marked
+ * to allow write access. On some platforms it may be possible to start the
+ * Java virtual machine with special privileges that allow it to modify
+ * files that are marked read-only. Whether or not a read-only file or
* directory may be deleted depends upon the underlying system.
*
* @return true if and only if the operation succeeded;
@@ -1376,7 +1384,9 @@
/**
* Sets the owner's or everybody's write permission for this abstract
- * pathname.
+ * pathname. On some platforms it may be possible to start the Java virtual
+ * machine with special privileges that allow it to modify files that
+ * disallow write operations.
*
* The {@link java.nio.file.Files} class defines methods that operate on * file attributes including file permissions. This may be used when finer @@ -1414,7 +1424,9 @@ /** * A convenience method to set the owner's write permission for this abstract - * pathname. + * pathname. On some platforms it may be possible to start the Java virtual + * machine with special privileges that allow it to modify files that + * disallow write operations. * *
An invocation of this method of the form file.setWritable(arg) * behaves in exactly the same way as the invocation @@ -1443,7 +1455,9 @@ /** * Sets the owner's or everybody's read permission for this abstract - * pathname. + * pathname. On some platforms it may be possible to start the Java virtual + * machine with special privileges that allow it to read files that are + * marked as unreadable. * *
The {@link java.nio.file.Files} class defines methods that operate on * file attributes including file permissions. This may be used when finer @@ -1484,7 +1498,9 @@ /** * A convenience method to set the owner's read permission for this abstract - * pathname. + * pathname. On some platforms it may be possible to start the Java virtual + * machine with special privileges that allow it to read files that that are + * marked as unreadable. * *
An invocation of this method of the form file.setReadable(arg) * behaves in exactly the same way as the invocation @@ -1516,7 +1532,9 @@ /** * Sets the owner's or everybody's execute permission for this abstract - * pathname. + * pathname. On some platforms it may be possible to start the Java virtual + * machine with special privileges that allow it to execute files that are + * not marked executable. * *
The {@link java.nio.file.Files} class defines methods that operate on * file attributes including file permissions. This may be used when finer @@ -1556,8 +1574,10 @@ } /** - * A convenience method to set the owner's execute permission for this abstract - * pathname. + * A convenience method to set the owner's execute permission for this + * abstract pathname. On some platforms it may be possible to start the Java + * virtual machine with special privileges that allow it to execute files + * that are not marked executable. * *
An invocation of this method of the form file.setExcutable(arg)
* behaves in exactly the same way as the invocation
@@ -1589,7 +1609,10 @@
/**
* Tests whether the application can execute the file denoted by this
- * abstract pathname.
+ * abstract pathname. On some platforms it may be possible to start the
+ * Java virtual machine with special privileges that allow it to execute
+ * files that are not marked executable. Consequently this method may return
+ * {@code true} even though the file does not have execute permissions.
*
* @return true if and only if the abstract pathname exists
* and the application is allowed to execute the file
diff -r b124faa29aef -r ce5ab758aeb5 jdk/test/java/io/File/Basic.java
--- a/jdk/test/java/io/File/Basic.java Wed Aug 15 14:35:36 2012 +0100
+++ b/jdk/test/java/io/File/Basic.java Wed Aug 15 22:46:35 2012 +0100
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2012, 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
@@ -25,7 +25,7 @@
@bug 4165666 4203706 4288670 4290024
@summary Basic heartbeat test for File methods that access the filesystem
- @build Basic
+ @build Basic Util
@run shell basic.sh
*/
@@ -73,7 +73,7 @@
if (!f.isFile()) fail(f, "is not a file");
if (f.isDirectory()) fail(f, "is a directory");
if (!f.canRead()) fail(f, "is not readable");
- if (f.canWrite() != writeable)
+ if (!Util.isPrivileged() && f.canWrite() != writeable)
fail(f, writeable ? "is not writeable" : "is writeable");
int rwLen = 6;
if (f.length() != length) fail(f, "has wrong length");
diff -r b124faa29aef -r ce5ab758aeb5 jdk/test/java/io/File/SetAccess.java
--- a/jdk/test/java/io/File/SetAccess.java Wed Aug 15 14:35:36 2012 +0100
+++ b/jdk/test/java/io/File/SetAccess.java Wed Aug 15 22:46:35 2012 +0100
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2012, 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
@@ -24,6 +24,8 @@
/* @test
@bug 4167472 5097703 6216563 6284003 6728842 6464744
@summary Basic test for setWritable/Readable/Executable methods
+ @build SetAccess Util
+ @run main SetAccess
*/
import java.io.*;
@@ -32,6 +34,11 @@
public class SetAccess {
public static void main(String[] args) throws Exception {
+ if (Util.isPrivileged()) {
+ System.out.println("Unable to test file permissions when running with privileges");
+ return;
+ }
+
File d = new File(System.getProperty("test.dir", "."));
File f = new File(d, "x.SetAccessPermission");
diff -r b124faa29aef -r ce5ab758aeb5 jdk/test/java/io/File/SetReadOnly.java
--- a/jdk/test/java/io/File/SetReadOnly.java Wed Aug 15 14:35:36 2012 +0100
+++ b/jdk/test/java/io/File/SetReadOnly.java Wed Aug 15 22:46:35 2012 +0100
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2012, 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
@@ -24,6 +24,8 @@
/* @test
@bug 4091757 4939819 6728842
@summary Basic test for setReadOnly method
+ @build SetReadOnly Util
+ @run main SetReadOnly
*/
import java.io.*;
@@ -32,6 +34,11 @@
public class SetReadOnly {
public static void main(String[] args) throws Exception {
+ if (Util.isPrivileged()) {
+ System.out.println("Unable to test file permissions when running with privileges");
+ return;
+ }
+
File d = new File(System.getProperty("test.dir", "."));
File f = new File(d, "x.SetReadOnly");
diff -r b124faa29aef -r ce5ab758aeb5 jdk/test/java/io/File/SymLinks.java
--- a/jdk/test/java/io/File/SymLinks.java Wed Aug 15 14:35:36 2012 +0100
+++ b/jdk/test/java/io/File/SymLinks.java Wed Aug 15 22:46:35 2012 +0100
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2009, 2012, 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
@@ -24,6 +24,8 @@
/* @test
* @bug 6595866
* @summary Test java.io.File operations with sym links
+ * @build SymLinks Util
+ * @run main SymLinks
*/
import java.io.*;
@@ -338,7 +340,7 @@
assertTrue(link2link2file.canRead());
assertTrue(link2link2file.canWrite());
- if (file.setReadOnly()) {
+ if (!Util.isPrivileged() && file.setReadOnly()) {
assertFalse(file.canWrite());
assertFalse(link2file.canWrite());
assertFalse(link2link2file.canWrite());
diff -r b124faa29aef -r ce5ab758aeb5 jdk/test/java/io/File/Util.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/io/File/Util.java Wed Aug 15 22:46:35 2012 +0100
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ * 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.
+ */
+
+import java.io.File;
+
+/**
+ * Utility class used by tests for java.io.File.
+ */
+
+class Util {
+ private Util() { }
+
+ /**
+ * Returns {@code true} if the Java virtual machine is running with
+ * privileges (loosely defined here as have write access to /etc/passwd).
+ */
+ static boolean isPrivileged() {
+ String osname = System.getProperty("os.name");
+ if (osname.startsWith("Windows"))
+ return false;
+
+ return (new File("/etc/passwd")).canWrite();
+ }
+}
+