2008-04-09 Mario Torre <neugens@aicas.com>

	* java/io/File.java (canWrite): use canWriteDirectory(String).
	* vm/reference/java/io/VMFile.java (canWriteDirectory): new native method.
	* native/jni/java-io/java_io_VMFile.c: correct indentation, sync function
	names with header file definition.
	(Java_java_io_VMFile_canRead): use cpio_checkAccess to get access
	permission. Removed unused variable.
    (Java_java_io_VMFile_canWrite): likewise.
    (Java_java_io_VMFile_canWriteDirectory): new function.

1 files changed, 11 insertions, 15 deletions

diff --git a/vm/reference/java/io/VMFile.java b/vm/reference/java/io/VMFile.java
index 2a2751765..9f584af23 100644
--- a/vm/reference/java/io/VMFile.java
+++ b/vm/reference/java/io/VMFile.java
@@ -58,10 +58,10 @@ final class VMFile
   {
     if (Configuration.INIT_LOAD_LIBRARY)
       {
-	System.loadLibrary("javaio");
+        System.loadLibrary("javaio");
       }
   }
-
+  
   /*
    * This native method does the actual work of getting the last file
    * modification time.  It also does the existence check to avoid the
@@ -167,19 +167,7 @@ final class VMFile
   /**
    * This methods checks if a directory can be written to.
    */
-  static boolean canWriteDirectory(File dir)
-  {
-    try
-      {
-        String filename = IS_DOS_8_3 ? "tst" : "test-dir-write";
-        File test = File.createTempFile(filename, null, dir);
-        return (test != null && test.delete());
-      }
-    catch (IOException ioe)
-      {
-        return false;
-      }
-  }
+  static native boolean canWriteDirectory(String path);
 
   /**
    * This native method checks file permissions for reading
@@ -199,6 +187,14 @@ final class VMFile
   static native boolean isDirectory(String dirpath);
 
   /**
+   * This methods checks if a directory can be written to.
+   */
+  static boolean canWriteDirectory(File path)
+  {
+    return canWriteDirectory(path.getAbsolutePath());
+  }
+  
+  /**
    * This method returns an array of filesystem roots.  Some operating systems
    * have volume oriented filesystem.  This method provides a mechanism for
    * determining which volumes exist.  GNU systems use a single hierarchical