1 /* Binary mode I/O.
2    Copyright 2017-2019 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
__gl_setmode_check(int fd)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
38