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