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/* Binary mode I/O.
Copyright 2017-2024 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#define BINARY_IO_INLINE _GL_EXTERN_INLINE
#include "binary-io.h"
#if defined __DJGPP__ || defined __EMX__
# include <unistd.h>
int
set_binary_mode (int fd, int mode)
{
if (isatty (fd))
/* If FD refers to a console (not a pipe, not a regular file),
O_TEXT is the only reasonable mode, both on input and on output.
Silently ignore the request. If we were to return -1 here,
all programs that use xset_binary_mode would fail when run
with console input or console output. */
return O_TEXT;
else
return __gl_setmode (fd, mode);
}
#endif
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