src/system/libroot/posix/stdlib/pty.cpp

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include <stdlib.h>
   7
   8 #include <fcntl.h>
   9 #include <stdio.h>
  10
  11 #include <SupportDefs.h>
  12
  13 #include <tty.h>
  14
  15
  16 int
  17 posix_openpt(int openFlags)
  18 {
  19         return open("/dev/ptmx", openFlags);
  20 }
  21
  22
  23 int
  24 grantpt(int masterFD)
  25 {
  26         return ioctl(masterFD, B_IOCTL_GRANT_TTY);
  27 }
  28
  29
  30 char*
  31 ptsname(int masterFD)
  32 {
  33         int32 index;
  34         if (ioctl(masterFD, B_IOCTL_GET_TTY_INDEX, &index, sizeof(index)) < 0)
  35                 return NULL;
  36
  37         static char buffer[32];
  38
  39         char letter = 'p';
  40         snprintf(buffer, sizeof(buffer), "/dev/tt/%c%" B_PRIx32,
  41                 char(letter + index / 16), index % 16);
  42
  43         return buffer;
  44 }
  45
  46
  47 int
  48 unlockpt(int masterFD)
  49 {
  50         // Noting to do ATM.
  51         return 0;
  52 }