actually add the protect stuff

protect.go

@@ -0,0 +1,7 @@
+//+build !openbsd
+
+package main
+
+func unveil(path string, flags string) {}
+func unveilBlock()                     {}
+func pledge(promises string)           {}

protect_openbsd.go

@@ -0,0 +1,20 @@
+//+build openbsd
+
+package main
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+func unveil(path string, flags string) {
+	unix.Unveil(path, flags)
+}
+
+func unveilBlock() {
+	unix.UnveilBlock()
+}
+
+func plegde(promises string) {
+	unix.PledgePromises(promises)
+
+}