builtins: interface_{start, stop, restart}

e.x.:
interface_start android.hardware.nfc@1.0/default
onrestart interface_restart android.hardware.nfc@1.0/default

Fixes: 79418581
Test: add this to a service, and killing that service, light is restarted
    onrestart interface_restart android.hardware.light@2.0::ILight/default
Change-Id: Ia7ac9380f01038752325cfbe030df1dd4a5665e2

1 files changed, 26 insertions, 0 deletions

diff --git a/init/builtins.cpp b/init/builtins.cpp
index 8bd92ccdd..17d34e134 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -240,6 +240,29 @@ static Result<Success> do_insmod(const BuiltinArguments& args) {
     return Success();
 }
 
+static Result<Success> do_interface_restart(const BuiltinArguments& args) {
+    Service* svc = ServiceList::GetInstance().FindInterface(args[1]);
+    if (!svc) return Error() << "interface " << args[1] << " not found";
+    svc->Restart();
+    return Success();
+}
+
+static Result<Success> do_interface_start(const BuiltinArguments& args) {
+    Service* svc = ServiceList::GetInstance().FindInterface(args[1]);
+    if (!svc) return Error() << "interface " << args[1] << " not found";
+    if (auto result = svc->Start(); !result) {
+        return Error() << "Could not start interface: " << result.error();
+    }
+    return Success();
+}
+
+static Result<Success> do_interface_stop(const BuiltinArguments& args) {
+    Service* svc = ServiceList::GetInstance().FindInterface(args[1]);
+    if (!svc) return Error() << "interface " << args[1] << " not found";
+    svc->Stop();
+    return Success();
+}
+
 // mkdir <path> [mode] [owner] [group]
 static Result<Success> do_mkdir(const BuiltinArguments& args) {
     mode_t mode = 0755;
@@ -1050,6 +1073,9 @@ const BuiltinFunctionMap::Map& BuiltinFunctionMap::map() const {
         {"init_user0",              {0,     0,    {false,  do_init_user0}}},
         {"insmod",                  {1,     kMax, {true,   do_insmod}}},
         {"installkey",              {1,     1,    {false,  do_installkey}}},
+        {"interface_restart",       {1,     1,    {false,  do_interface_restart}}},
+        {"interface_start",         {1,     1,    {false,  do_interface_start}}},
+        {"interface_stop",          {1,     1,    {false,  do_interface_stop}}},
         {"load_persist_props",      {0,     0,    {false,  do_load_persist_props}}},
         {"load_system_props",       {0,     0,    {false,  do_load_system_props}}},
         {"loglevel",                {1,     1,    {false,  do_loglevel}}},