lib/binary-io.c

   1 /* Binary mode I/O.
   2    Copyright 2017-2018 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 #include <config.h>
  18
  19 #define BINARY_IO_INLINE _GL_EXTERN_INLINE
  20 #include "binary-io.h"
  21
  22 #if defined __DJGPP__ || defined __EMX__
  23 # include <errno.h>
  24 # include <unistd.h>
  25
  26 int
  27 __gl_setmode_check (int fd)
  28 {
  29   if (isatty (fd))
  30     {
  31       errno = EINVAL;
  32       return -1;
  33     }
  34   else
  35     return 0;
  36 }
  37 #endif