| // Copyright 2016 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| //go:build linux | |
| // +build linux | |
| package main | |
| import ( | |
| "syscall" | |
| "unsafe" | |
| ) | |
| const ioctlReadTermios = syscall.TCGETS | |
| // isTerminal reports whether fd is a terminal. | |
| func isTerminal(fd uintptr) bool { | |
| var termios syscall.Termios | |
| _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0) | |
| return err == 0 | |
| } | |
| func init() { | |
| stdOutErrAreTerminals = func() bool { | |
| return isTerminal(1) && isTerminal(2) | |
| } | |
| } |