sysdeps/unix/sysv/linux/getpt.c

   1 /* Copyright (C) 1998-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <fcntl.h>
  19 #include <unistd.h>
  20 #include <paths.h>
  21 #include <stdlib.h>
  22
  23 /* Path to the master pseudo terminal cloning device.  */
  24 #define _PATH_DEVPTMX _PATH_DEV "ptmx"
  25
  26 /* Open a master pseudo terminal and return its file descriptor.  */
  27 int
  28 __posix_openpt (int oflag)
  29 {
  30   return __open (_PATH_DEVPTMX, oflag);
  31 }
  32 weak_alias (__posix_openpt, posix_openpt)
  33
  34
  35 int
  36 __getpt (void)
  37 {
  38   return __posix_openpt (O_RDWR);
  39 }
  40 libc_hidden_def (__getpt)
  41 weak_alias (__getpt, getpt)