new Android toys: start/stop

1 files changed, 68 insertions, 0 deletions

diff --git a/toys/android/start.c b/toys/android/start.c
new file mode 100644
index 00000000..8981b679
--- /dev/null
+++ b/toys/android/start.c
@@ -0,0 +1,68 @@
+/* start.c - Start/stop system services.
+ *
+ * Copyright 2016 The Android Open Source Project
+
+USE_START(NEWTOY(start, "", TOYFLAG_USR|TOYFLAG_SBIN))
+USE_STOP(NEWTOY(stop, "", TOYFLAG_USR|TOYFLAG_SBIN))
+
+config START
+  bool "start"
+  depends on TOYBOX_ON_ANDROID
+  default y
+  help
+    usage: start [SERVICE...]
+
+    Starts the given system service, or netd/surfaceflinger/zygotes.
+
+config STOP
+  bool "stop"
+  depends on TOYBOX_ON_ANDROID
+  default y
+  help
+    usage: stop [SERVICE...]
+
+    Stop the given system service, or netd/surfaceflinger/zygotes.
+*/
+
+#define FOR_start
+#include "toys.h"
+
+#include <cutils/properties.h>
+
+static const char *services[] = {
+  "netd", "surfaceflinger", "zygote", "zygote_secondary", NULL,
+};
+
+static void start_stop(int start)
+{
+  const char* property = start ? "ctl.start" : "ctl.stop";
+  int i;
+
+  if (getuid() != 0) error_exit("must be root");
+
+  if (*toys.optargs) {
+    for (i = 0; toys.optargs[i]; i++) property_set(property, toys.optargs[i]);
+  } else if (start) {
+    for (i = 0; i < ARRAY_LEN(services); ++i) {
+      property_set(property, services[i]);
+    }
+  } else {
+    for (i = ARRAY_LEN(services) - 1; i >= 0; --i) {
+      property_set(property, services[i]);
+    }
+  }
+}
+
+void start_main(void)
+{
+  start_stop(1);
+}
+
+#define CLEANUP_start
+#define FOR_stop
+#include "generated/flags.h"
+
+void stop_main(void)
+{
+  start_stop(0);
+}