github.com/JimmyHuang454/JLS-go@v0.0.0-20230831150107-90d536585ba0/internal/testpty/pty_darwin.go (about)

     1  // Copyright 2017 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  package testpty
     6  
     7  import (
     8  	"internal/syscall/unix"
     9  	"os"
    10  	"syscall"
    11  )
    12  
    13  func open() (pty *os.File, processTTY string, err error) {
    14  	m, err := unix.PosixOpenpt(syscall.O_RDWR)
    15  	if err != nil {
    16  		return nil, "", ptyError("posix_openpt", err)
    17  	}
    18  	if err := unix.Grantpt(m); err != nil {
    19  		syscall.Close(m)
    20  		return nil, "", ptyError("grantpt", err)
    21  	}
    22  	if err := unix.Unlockpt(m); err != nil {
    23  		syscall.Close(m)
    24  		return nil, "", ptyError("unlockpt", err)
    25  	}
    26  	processTTY, err = unix.Ptsname(m)
    27  	if err != nil {
    28  		syscall.Close(m)
    29  		return nil, "", ptyError("ptsname", err)
    30  	}
    31  	return os.NewFile(uintptr(m), "pty"), processTTY, nil
    32  }