gl/tests/test-ioctl.c

   1 /* Test of ioctl() function.
   2    Copyright (C) 2011-2012 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 <http://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <sys/ioctl.h>
  21
  22 #include "signature.h"
  23 SIGNATURE_CHECK (ioctl, int, (int, int, ...));
  24
  25 #include <errno.h>
  26
  27 #include "macros.h"
  28
  29 int
  30 main (void)
  31 {
  32 #ifdef FIONREAD
  33   /* Test behaviour for invalid file descriptors.  */
  34   {
  35     int value;
  36     errno = 0;
  37     ASSERT (ioctl (-1, FIONREAD, &value) == -1);
  38     ASSERT (errno == EBADF);
  39   }
  40   {
  41     int value;
  42     errno = 0;
  43     ASSERT (ioctl (99, FIONREAD, &value) == -1);
  44     ASSERT (errno == EBADF);
  45   }
  46 #endif
  47
  48   return 0;
  49 }