pty_cgo.mx raw

   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  //go:build cgo && (aix || dragonfly || freebsd || (linux && !android) || netbsd || openbsd)
   6  
   7  package testpty
   8  
   9  /*
  10  #define _XOPEN_SOURCE 600
  11  #include <fcntl.h>
  12  #include <stdlib.h>
  13  #include <unistd.h>
  14  */
  15  import "C"
  16  
  17  import "os"
  18  
  19  func open() (pty *os.File, processTTY []byte, err error) {
  20  	m, err := C.posix_openpt(C.O_RDWR)
  21  	if m < 0 {
  22  		return nil, "", ptyError("posix_openpt", err)
  23  	}
  24  	if res, err := C.grantpt(m); res < 0 {
  25  		C.close(m)
  26  		return nil, "", ptyError("grantpt", err)
  27  	}
  28  	if res, err := C.unlockpt(m); res < 0 {
  29  		C.close(m)
  30  		return nil, "", ptyError("unlockpt", err)
  31  	}
  32  	processTTY = C.GoString(C.ptsname(m))
  33  	return os.NewFile(uintptr(m), "pty"), processTTY, nil
  34  }
  35