diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index ad99a39..fc38907 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -2,7 +2,6 @@
 
 
 common_cflags := \
-    -std=gnu99 \
     -Werror -Wno-unused-parameter \
     -I$(LOCAL_PATH)/upstream-netbsd/include/ \
     -include bsd-compatibility.h \
@@ -63,10 +62,12 @@
 ALL_TOOLS = $(BSD_TOOLS) $(OUR_TOOLS)
 
 LOCAL_SRC_FILES := \
+    start_stop.cpp \
     toolbox.c \
     $(patsubst %,%.c,$(OUR_TOOLS)) \
 
 LOCAL_CFLAGS += $(common_cflags)
+LOCAL_CONLYFLAGS += -std=gnu99
 
 LOCAL_SHARED_LIBRARIES := \
     libcutils \
diff --git a/toolbox/start.c b/toolbox/start.c
index 6c8a3f2..cca5fef 100644
--- a/toolbox/start.c
+++ b/toolbox/start.c
@@ -1,21 +1 @@
-
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <cutils/properties.h>
-
-int start_main(int argc, char *argv[])
-{
-    if(argc > 1) {
-        property_set("ctl.start", argv[1]);
-    } else {
-        /* defaults to starting the common services stopped by stop.c */
-        property_set("ctl.start", "netd");
-        property_set("ctl.start", "surfaceflinger");
-        property_set("ctl.start", "zygote");
-        property_set("ctl.start", "zygote_secondary");
-    }
-
-    return 0;
-}
+/* Needed by Android.mk. Actual code in start_stop.cpp. */
diff --git a/toolbox/start_stop.cpp b/toolbox/start_stop.cpp
new file mode 100644
index 0000000..dc48c0c
--- /dev/null
+++ b/toolbox/start_stop.cpp
@@ -0,0 +1,43 @@
+#include <error.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <cutils/properties.h>
+
+static const char* services[] = {
+  "netd",
+  "surfaceflinger",
+  "zygote",
+  "zygote_secondary",
+};
+
+static int start_stop(bool start, int argc, char* argv[]) {
+  if (getuid() != 0) error(1, 0, "must be root");
+  const char* property = start ? "ctl.start" : "ctl.stop";
+  if (argc > 2) {
+    error(1, 0, "usage: %s [SERVICE]\n", argv[0]);
+  } else if (argc == 2) {
+    property_set(property, argv[1]);
+  } else {
+    if (start) {
+      for (size_t i = 0; i < sizeof(services)/sizeof(services[0]); ++i) {
+        property_set(property, services[i]);
+      }
+    } else {
+      for (int i = sizeof(services)/sizeof(services[0]) - 1; i >= 0; --i) {
+        property_set(property, services[i]);
+      }
+    }
+  }
+  return 0;
+}
+
+extern "C" int start_main(int argc, char* argv[]) {
+  return start_stop(true, argc, argv);
+}
+
+extern "C" int stop_main(int argc, char* argv[]) {
+  return start_stop(false, argc, argv);
+}
diff --git a/toolbox/stop.c b/toolbox/stop.c
index 5e3ce3c..cca5fef 100644
--- a/toolbox/stop.c
+++ b/toolbox/stop.c
@@ -1,19 +1 @@
-#include <stdio.h>
-#include <string.h>
-
-#include <cutils/properties.h>
-
-int stop_main(int argc, char *argv[])
-{
-    if(argc > 1) {
-        property_set("ctl.stop", argv[1]);
-    } else{
-        /* defaults to stopping the common services */
-        property_set("ctl.stop", "zygote_secondary");
-        property_set("ctl.stop", "zygote");
-        property_set("ctl.stop", "surfaceflinger");
-        property_set("ctl.stop", "netd");
-    }
-
-    return 0;
-}
+/* Needed by Android.mk. Actual code in start_stop.cpp. */