| // 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) |
| } |
| } |
