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f0007cade0
* m4/gnulib-cache.m4: Use `dirfd'. * libguile/filesys.c: Include Gnulib's <dirent.h> directly. (dirfd): Remove. Suggested by Bruno Haible <bruno@clisp.org>.
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/* Binary mode I/O.
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Copyright (C) 2001, 2003, 2005, 2008-2012 Free Software Foundation, Inc.
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This program 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 published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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 <http://www.gnu.org/licenses/>. */
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#ifndef _BINARY_H
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#define _BINARY_H
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/* For systems that distinguish between text and binary I/O.
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O_BINARY is guaranteed by the gnulib <fcntl.h>. */
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#include <fcntl.h>
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/* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...',
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so we include it here first. */
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#include <stdio.h>
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/* SET_BINARY (fd);
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changes the file descriptor fd to perform binary I/O. */
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#if O_BINARY
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# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
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# include <io.h> /* declares setmode() */
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# else
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# define setmode _setmode
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# undef fileno
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# define fileno _fileno
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# endif
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# ifdef __DJGPP__
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# include <unistd.h> /* declares isatty() */
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/* Avoid putting stdin/stdout in binary mode if it is connected to
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the console, because that would make it impossible for the user
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to interrupt the program through Ctrl-C or Ctrl-Break. */
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# define SET_BINARY(fd) ((void) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0))
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# else
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# define SET_BINARY(fd) ((void) setmode (fd, O_BINARY))
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# endif
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#else
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/* On reasonable systems, binary I/O is the default. */
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# define SET_BINARY(fd) /* do nothing */ ((void) 0)
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#endif
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#endif /* _BINARY_H */
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