From 23580ca27a0a8109312fdd36cc363ad1f4719889 Mon Sep 17 00:00:00 2001
From: The Android Open Source Project <initial-contribution@android.com>
Date: Tue, 21 Oct 2008 07:00:00 -0700
Subject: Initial Contribution

---
 test_roots.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 test_roots.c

(limited to 'test_roots.c')

diff --git a/test_roots.c b/test_roots.c
new file mode 100644
index 000000000..f49f55e21
--- /dev/null
+++ b/test_roots.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2007 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 <sys/stat.h>
+#include "roots.h"
+#include "common.h"
+
+#define CANARY_FILE "/system/build.prop"
+#define CANARY_FILE_ROOT_PATH "SYSTEM:build.prop"
+
+int
+file_exists(const char *path)
+{
+    struct stat st;
+    int ret;
+    ret = stat(path, &st);
+    if (ret == 0) {
+        return S_ISREG(st.st_mode);
+    }
+    return 0;
+}
+
+int
+test_roots()
+{
+    int ret;
+
+    /* Make sure that /system isn't mounted yet.
+     */
+    if (file_exists(CANARY_FILE)) return -__LINE__;
+    if (is_root_path_mounted(CANARY_FILE_ROOT_PATH)) return -__LINE__;
+
+    /* Try to mount the root.
+     */
+    ret = ensure_root_path_mounted(CANARY_FILE_ROOT_PATH);
+    if (ret < 0) return -__LINE__;
+
+    /* Make sure we can see the file now and that we know the root is mounted.
+     */
+    if (!file_exists(CANARY_FILE)) return -__LINE__;
+    if (!is_root_path_mounted(CANARY_FILE_ROOT_PATH)) return -__LINE__;
+
+    /* Make sure that the root path corresponds to the regular path.
+     */
+    struct stat st1, st2;
+    char buf[128];
+    const char *path = translate_root_path(CANARY_FILE_ROOT_PATH,
+            buf, sizeof(buf));
+    if (path == NULL) return -__LINE__;
+    ret = stat(CANARY_FILE, &st1);
+    if (ret != 0) return -__LINE__;
+    ret = stat(path, &st2);
+    if (ret != 0) return -__LINE__;
+    if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino) return -__LINE__;
+
+    /* Try to unmount the root.
+     */
+    ret = ensure_root_path_unmounted(CANARY_FILE_ROOT_PATH);
+    if (ret < 0) return -__LINE__;
+
+    /* Make sure that we can't see the file anymore and that
+     * we don't think the root is mounted.
+     */
+    if (file_exists(CANARY_FILE)) return -__LINE__;
+    if (is_root_path_mounted(CANARY_FILE_ROOT_PATH)) return -__LINE__;
+
+    return 0;
+}
-- 
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