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 <unistd.h> |
24 | |
25 | int |
26 | set_binary_mode (int fd, int mode) |
27 | { |
28 | if (isatty (fd)) |
29 | /* If FD refers to a console (not a pipe, not a regular file), |
30 | O_TEXT is the only reasonable mode, both on input and on output. |
31 | Silently ignore the request. If we were to return -1 here, |
32 | all programs that use xset_binary_mode would fail when run |
33 | with console input or console output. */ |
34 | return O_TEXT; |
35 | else |
36 | return __gl_setmode (fd, mode); |
37 | } |
38 | |
39 | #endif |
40 | |