diff --git a/tools/fs_config/fs_config.c b/tools/fs_config/fs_config.c
new file mode 100644
index 0000000..5b99b30
--- /dev/null
+++ b/tools/fs_config/fs_config.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "private/android_filesystem_config.h"
+
+// This program takes a list of files and directories (indicated by a
+// trailing slash) on the stdin, and prints to stdout each input
+// filename along with its desired uid, gid, and mode (in octal).
+// The leading slash should be stripped from the input.
+//
+// Example input:
+//
+//    system/etc/dbus.conf
+//    data/app/
+//
+// Output:
+//
+//    system/etc/dbus.conf 1002 1002 440
+//    data/app 1000 1000 771
+//
+// Note that the output will omit the trailing slash from
+// directories.
+
+int main(int argc, char** argv) {
+  char buffer[1024];
+
+  while (fgets(buffer, 1023, stdin) != NULL) {
+    int is_dir = 0;
+    int i;
+    for (i = 0; i < 1024 && buffer[i]; ++i) {
+      switch (buffer[i]) {
+        case '\n':
+          buffer[i-is_dir] = '\0';
+          i = 1025;
+          break;
+        case '/':
+          is_dir = 1;
+          break;
+        default:
+          is_dir = 0;
+          break;
+      }
+    }
+
+    unsigned uid = 0, gid = 0, mode = 0;
+    fs_config(buffer, is_dir, &uid, &gid, &mode);
+    printf("%s %d %d %o\n", buffer, uid, gid, mode);
+  }
+  return 0;
+}