reg/vendor/github.com/docker/docker-ce/components/engine/pkg/system/umask_windows.go

package system // import "github.com/docker/docker/pkg/system"

// Umask is not supported on the windows platform.
func Umask(newmask int) (oldmask int, err error) {
	// should not be called on cli code path
	return 0, ErrNotSupportedPlatform
}