const golang.org/x/sys/unix.TIOCSPTLCK

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux_amd64.go#L441: 	TIOCSPTLCK                       = 0x40045431

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)