Function syncParentReady

libcontainer/init_linux.go:422–429

syncParentReady sends to the given pipe a JSON payload which indicates that the init is ready to Exec the child process. It then waits for the parent to indicate that it is cleared to Exec.

(pipe *syncSocket)

// the init is ready to Exec the child process. It then waits for the parent to
// indicate that it is cleared to Exec.
func syncParentReady(pipe *syncSocket) error {
	// Tell parent.
	if err := writeSync(pipe, procReady); err != nil {
		return err
	}
	// Wait for parent to give the all-clear.
	return readSync(pipe, procRun)
}

// syncParentHooks sends to the given pipe a JSON payload which indicates that
// the parent should execute pre-start hooks. It then waits for the parent to