InputStream wrapper to read files w/ sudo

bindings/java/src/net/hyperic/sigar/SudoFileInputStream.java

@@ -0,0 +1,68 @@
+package net.hyperic.sigar;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * InputStream wrapper for 'sudo cat filename'
+ */
+public class SudoFileInputStream extends InputStream {
+    private Process process;
+    private InputStream is;
+
+    public SudoFileInputStream(String file)
+        throws IOException, FileNotFoundException {
+        this(new File(file));
+    }
+
+    public SudoFileInputStream(File file)
+        throws IOException, FileNotFoundException {
+        if (!file.exists()) {
+            throw new FileNotFoundException();
+        }
+        String[] args = {
+            "sudo", "cat", file.toString()
+        };
+        this.process = Runtime.getRuntime().exec(args);
+        this.is = this.process.getInputStream();
+    }
+
+    public void close() throws IOException {
+        this.process.destroy();
+    }
+
+    /* passthru all other InputStream methods */
+    public int read() throws IOException {
+        return this.is.read();
+    }
+
+    public int read(byte b[]) throws IOException {
+        return this.is.read(b);
+    }
+
+    public int read(byte b[], int off, int len) throws IOException {
+        return this.is.read(b, off, len);
+    }
+
+    public long skip(long n) throws IOException {
+        return this.is.skip(n);
+    }
+
+    public int available() throws IOException {
+        return this.is.available();
+    }
+
+    public synchronized void mark(int readlimit) {
+        this.is.mark(readlimit);
+    }
+
+    public synchronized void reset() throws IOException {
+        this.is.reset();
+    }
+
+    public boolean markSupported() {
+        return this.is.markSupported();
+    }
+}