|// Copyright 2015 The Vanadium Authors. All rights reserved.
|// Use of this source code is governed by a BSD-style
|// license that can be found in the LICENSE file.
|// Package exec implements configuration and secret-sharing between parent and
|// child processes via anoymous pipes. Anonymous pipes are used since they are
|// the most secure communication channel available.
|// Once a parent starts a child process it can use WaitForReady to wait for the
|// child to reach its 'Ready' state. Operations are provided to wait for the
|// child to terminate, and to terminate the child, cleaning up any state
|// associated with it.
|// A child process uses the GetChildHandle function to complete the initial
|// authentication handshake. The child must call SetReady to indicate that it
|// is fully initialized and ready for whatever purpose it is intended to
|// fulfill. This handshake is referred as the 'exec protocol'.