40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/* Binary mode I/O.
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Copyright 2017-2022 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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#define BINARY_IO_INLINE _GL_EXTERN_INLINE
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#include "binary-io.h"
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#if defined __DJGPP__ || defined __EMX__
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# include <unistd.h>
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int
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set_binary_mode (int fd, int mode)
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{
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if (isatty (fd))
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/* If FD refers to a console (not a pipe, not a regular file),
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O_TEXT is the only reasonable mode, both on input and on output.
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Silently ignore the request. If we were to return -1 here,
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all programs that use xset_binary_mode would fail when run
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with console input or console output. */
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return O_TEXT;
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else
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return __gl_setmode (fd, mode);
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}
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#endif
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