Source file src/cmd/dist/test_linux.go

     1	// Copyright 2016 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	// +build linux
     6	
     7	package main
     8	
     9	import (
    10		"syscall"
    11		"unsafe"
    12	)
    13	
    14	const ioctlReadTermios = syscall.TCGETS
    15	
    16	// isTerminal reports whether fd is a terminal.
    17	func isTerminal(fd uintptr) bool {
    18		var termios syscall.Termios
    19		_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
    20		return err == 0
    21	}
    22	
    23	func init() {
    24		stdOutErrAreTerminals = func() bool {
    25			return isTerminal(1) && isTerminal(2)
    26		}
    27	}
    28	

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