blob: 1e42d245dba712f5b9de9fc66b1a4b3eef39977e [file] [log] [blame]
// Copyright 2020 The Chromium OS 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 crosconfig provides methods for using the cros_config command line
// utility. See
// for more information about cros_config.
package crosconfig
import (
// ErrNotFound describes an error encountered when a property is not found by
// cros_config.
type ErrNotFound struct {
// IsNotFound returns true if the given error is of type errNotFound.
func IsNotFound(err error) bool {
_, ok := err.(*ErrNotFound)
return ok
// Get returns the given property as a string if it is set and returns an empty
// string if it is not.
func Get(ctx context.Context, path, prop string) (string, error) {
b, err := testexec.CommandContext(ctx, "cros_config", path, prop).Output()
if err != nil {
status, ok := testexec.GetWaitStatus(err)
if ok && status.ExitStatus() == 1 {
return "", &ErrNotFound{E: errors.Errorf("property not found: %v", prop)}
return "", err
return strings.TrimSpace(string(b)), nil