prometheus/vendor/github.com/sirupsen/logrus/terminal_check_unix.go

// +build linux aix
// +build !js

package logrus

import "golang.org/x/sys/unix"

const ioctlReadTermios = unix.TCGETS

func isTerminal(fd int) bool {
	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
	return err == nil
}