tests/test-posix_openpt.c

   1 /* Test of posix_openpt function.
   2    Copyright (C) 2011-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Eric Blake <eblake@redhat.com>, 2011.  */
  18
  19 #include <config.h>
  20
  21 #include <stdlib.h>
  22
  23 #include "signature.h"
  24 SIGNATURE_CHECK (posix_openpt, int, (int));
  25
  26 #include <errno.h>
  27 #include <fcntl.h>
  28 #include <stdio.h>
  29 #include <unistd.h>
  30
  31 #if defined __sun || defined __hpux /* Solaris, HP-UX */
  32 # include <stropts.h>
  33 #endif
  34
  35 #include "macros.h"
  36
  37 int
  38 main (void)
  39 {
  40   int master;
  41   int slave;
  42   char *name;
  43
  44   /* Open the master of a pseudo-terminal pair.  */
  45   master = posix_openpt (O_RDWR | O_NOCTTY);
  46   if (master < 0 && errno == ENOSYS)
  47     {
  48       fputs ("skipping: platform lacks pty support\n", stderr);
  49       return 77;
  50     }
  51
  52   ASSERT (0 <= master);
  53   name = ptsname (master);
  54   ASSERT (name);
  55   ASSERT (grantpt (master) == 0);
  56   ASSERT (unlockpt (master) == 0);
  57   slave = open (name, O_RDWR);
  58   ASSERT (0 <= slave);
  59
  60 #if defined __sun || defined __hpux /* Solaris, HP-UX */
  61   ASSERT (ioctl (slave, I_PUSH, "ptem") == 0);
  62   ASSERT (ioctl (slave, I_PUSH, "ldterm")  == 0);
  63 # if defined __sun
  64   ASSERT (ioctl (slave, I_PUSH, "ttcompat") == 0);
  65 # endif
  66 #endif
  67
  68   ASSERT (isatty (slave));
  69
  70   /* Close the master side before the slave side gets closed.
  71      This is necessary on Mac OS X 10.4.11.  */
  72   ASSERT (close (master) == 0);
  73   ASSERT (close (slave) == 0);
  74
  75   return 0;
  76 }