From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- src/os/signal/internal/pty/pty.go | 59 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 src/os/signal/internal/pty/pty.go (limited to 'src/os/signal/internal') diff --git a/src/os/signal/internal/pty/pty.go b/src/os/signal/internal/pty/pty.go new file mode 100644 index 0000000..f8813ce --- /dev/null +++ b/src/os/signal/internal/pty/pty.go @@ -0,0 +1,59 @@ +// Copyright 2017 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. + +// +build aix darwin dragonfly freebsd linux,!android netbsd openbsd +// +build cgo + +// Package pty is a simple pseudo-terminal package for Unix systems, +// implemented by calling C functions via cgo. +// This is only used for testing the os/signal package. +package pty + +/* +#define _XOPEN_SOURCE 600 +#include +#include +#include +*/ +import "C" + +import ( + "fmt" + "os" + "syscall" +) + +type PtyError struct { + FuncName string + ErrorString string + Errno syscall.Errno +} + +func ptyError(name string, err error) *PtyError { + return &PtyError{name, err.Error(), err.(syscall.Errno)} +} + +func (e *PtyError) Error() string { + return fmt.Sprintf("%s: %s", e.FuncName, e.ErrorString) +} + +func (e *PtyError) Unwrap() error { return e.Errno } + +// Open returns a control pty and the name of the linked process tty. +func Open() (pty *os.File, processTTY string, err error) { + m, err := C.posix_openpt(C.O_RDWR) + if err != nil { + return nil, "", ptyError("posix_openpt", err) + } + if _, err := C.grantpt(m); err != nil { + C.close(m) + return nil, "", ptyError("grantpt", err) + } + if _, err := C.unlockpt(m); err != nil { + C.close(m) + return nil, "", ptyError("unlockpt", err) + } + processTTY = C.GoString(C.ptsname(m)) + return os.NewFile(uintptr(m), "pty"), processTTY, nil +} -- cgit v1.2.3