small fixes

cmd/packets/main.go

@@ -540,6 +540,7 @@ func Install(packagepath string, serial uint) error {
 
 	L.SetGlobal("packets_package_dir", lua.LString(cfg.Config.DataDir))
 	L.SetGlobal("packets_bin_dir", lua.LString(cfg.Config.BinDir))
+	L.SetField(L.GetGlobal("os"), "remove", L.NewFunction(internal.SafeRemove))
 
 	if err := L.DoFile(manifest.Hooks.Install); err != nil {
 		log.Panic(err)

internal/internal.go

@@ -188,8 +188,8 @@ func IsSafe(str string) bool {
 	return true
 }
 
-func safeRemove(L *lua.LState) int {
-	path := L.ToString(1)
+func SafeRemove(L *lua.LState) int {
+	path := L.CheckString(1)
 	if !IsSafe(path) {
 		L.Push(lua.LFalse)
 		return 1