diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
index bea811d..bf4b43b 100644
--- a/cmds/dumpstate/dumpstate.cpp
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -304,7 +304,7 @@
 }
 
 static void dumpstate(const std::string& screenshot_path) {
-    std::unique_ptr<DurationReporter> duration_reporter(new DurationReporter("DUMPSTATE"));
+    DurationReporter> duration_reporter("DUMPSTATE");
     unsigned long timeout;
 
     dump_dev_files("TRUSTY VERSION", "/sys/bus/platform/drivers/trusty", "trusty_version");
diff --git a/cmds/dumpstate/dumpstate.h b/cmds/dumpstate/dumpstate.h
index 1719090..0a9f9e2 100644
--- a/cmds/dumpstate/dumpstate.h
+++ b/cmds/dumpstate/dumpstate.h
@@ -64,7 +64,7 @@
 static const int WEIGHT_FILE = 5;
 
 /*
- * TOOD: the dumpstate internal state is getting fragile; for example, this variable is defined
+ * TODO: the dumpstate internal state is getting fragile; for example, this variable is defined
  * here, declared at utils.cpp, and used on utils.cpp and dumpstate.cpp.
  * It would be better to take advantage of the C++ migration and encapsulate the state in an object,
  * but that will be better handled in a major C++ refactoring, which would also get rid of other C
@@ -142,6 +142,15 @@
 /* Takes a screenshot and save it to the given file */
 void take_screenshot(const std::string& path);
 
+/* Vibrates for a given durating (in milliseconds). */
+void vibrate(FILE* vibrator, int ms);
+
+/* Checks if a given path is a directory. */
+bool is_dir(const char* pathname);
+
+/** Gets the last modification time of a file, or default time if file is not found. */
+time_t get_mtime(int fd, time_t default_mtime);
+
 /* dump eMMC Extended CSD data */
 void dump_emmc_ecsd(const char *ext_csd_path);
 
diff --git a/cmds/dumpstate/utils.cpp b/cmds/dumpstate/utils.cpp
index da5632d..78bab81 100644
--- a/cmds/dumpstate/utils.cpp
+++ b/cmds/dumpstate/utils.cpp
@@ -71,7 +71,7 @@
         uint64_t elapsed = DurationReporter::nanotime() - started_;
         // Use "Yoda grammar" to make it easier to grep|sort sections.
         printf("------ %.3fs was the duration of '%s' ------\n",
-                (float) elapsed / NANOS_PER_SEC, title_);
+               (float) elapsed / NANOS_PER_SEC, title_);
     }
 }
 
@@ -912,6 +912,27 @@
     run_command_always(NULL, 10, args);
 }
 
+void vibrate(FILE* vibrator, int ms) {
+    fprintf(vibrator, "%d\n", ms);
+    fflush(vibrator);
+}
+
+bool is_dir(const char* pathname) {
+    struct stat info;
+    if (stat(pathname, &info) == -1) {
+        return false;
+    }
+    return S_ISDIR(info.st_mode);
+}
+
+time_t get_mtime(int fd, time_t default_mtime) {
+    struct stat info;
+    if (fstat(fd, &info) == -1) {
+        return default_mtime;
+    }
+    return info.st_mtime;
+}
+
 void dump_emmc_ecsd(const char *ext_csd_path) {
     static const size_t EXT_CSD_REV = 192;
     static const size_t EXT_PRE_EOL_INFO = 267;