1*09d4459fSDaniel Fojt /* Binary mode I/O.
2*09d4459fSDaniel Fojt Copyright 2017-2020 Free Software Foundation, Inc.
3*09d4459fSDaniel Fojt
4*09d4459fSDaniel Fojt This program is free software: you can redistribute it and/or modify
5*09d4459fSDaniel Fojt it under the terms of the GNU General Public License as published by
6*09d4459fSDaniel Fojt the Free Software Foundation; either version 3 of the License, or
7*09d4459fSDaniel Fojt (at your option) any later version.
8*09d4459fSDaniel Fojt
9*09d4459fSDaniel Fojt This program is distributed in the hope that it will be useful,
10*09d4459fSDaniel Fojt but WITHOUT ANY WARRANTY; without even the implied warranty of
11*09d4459fSDaniel Fojt MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12*09d4459fSDaniel Fojt GNU General Public License for more details.
13*09d4459fSDaniel Fojt
14*09d4459fSDaniel Fojt You should have received a copy of the GNU General Public License
15*09d4459fSDaniel Fojt along with this program. If not, see <https://www.gnu.org/licenses/>. */
16*09d4459fSDaniel Fojt
17680a9cb8SJohn Marino #include <config.h>
18*09d4459fSDaniel Fojt
19680a9cb8SJohn Marino #define BINARY_IO_INLINE _GL_EXTERN_INLINE
20680a9cb8SJohn Marino #include "binary-io.h"
21*09d4459fSDaniel Fojt
22*09d4459fSDaniel Fojt #if defined __DJGPP__ || defined __EMX__
23*09d4459fSDaniel Fojt # include <unistd.h>
24*09d4459fSDaniel Fojt
25*09d4459fSDaniel Fojt int
set_binary_mode(int fd,int mode)26*09d4459fSDaniel Fojt set_binary_mode (int fd, int mode)
27*09d4459fSDaniel Fojt {
28*09d4459fSDaniel Fojt if (isatty (fd))
29*09d4459fSDaniel Fojt /* If FD refers to a console (not a pipe, not a regular file),
30*09d4459fSDaniel Fojt O_TEXT is the only reasonable mode, both on input and on output.
31*09d4459fSDaniel Fojt Silently ignore the request. If we were to return -1 here,
32*09d4459fSDaniel Fojt all programs that use xset_binary_mode would fail when run
33*09d4459fSDaniel Fojt with console input or console output. */
34*09d4459fSDaniel Fojt return O_TEXT;
35*09d4459fSDaniel Fojt else
36*09d4459fSDaniel Fojt return __gl_setmode (fd, mode);
37*09d4459fSDaniel Fojt }
38*09d4459fSDaniel Fojt
39*09d4459fSDaniel Fojt #endif
40