/* Binary mode I/O.
- Copyright (C) 2001, 2003, 2005, 2008-2016 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2003, 2005, 2008-2021 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _BINARY_H
#define _BINARY_H
# define BINARY_IO_INLINE _GL_INLINE
#endif
-/* set_binary_mode (fd, mode)
- sets the binary/text I/O mode of file descriptor fd to the given mode
- (must be O_BINARY or O_TEXT) and returns the previous mode. */
#if O_BINARY
# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
# include <io.h> /* declares setmode() */
-# define set_binary_mode setmode
+# define __gl_setmode setmode
# else
-# define set_binary_mode _setmode
+# define __gl_setmode _setmode
# undef fileno
# define fileno _fileno
# endif
/* Use a function rather than a macro, to avoid gcc warnings
"warning: statement with no effect". */
BINARY_IO_INLINE int
-set_binary_mode (int fd, int mode)
+__gl_setmode (int fd _GL_UNUSED, int mode _GL_UNUSED)
{
- (void) fd;
- (void) mode;
return O_BINARY;
}
#endif
-/* SET_BINARY (fd);
- changes the file descriptor fd to perform binary I/O. */
+/* Set FD's mode to MODE, which should be either O_TEXT or O_BINARY.
+ Return the old mode if successful, -1 (setting errno) on failure.
+ Ordinarily this function would be called 'setmode', since that is
+ its old name on MS-Windows, but it is called 'set_binary_mode' here
+ to avoid colliding with a BSD function of another name. */
+
#if defined __DJGPP__ || defined __EMX__
-# include <unistd.h> /* declares isatty() */
- /* Avoid putting stdin/stdout in binary mode if it is connected to
- the console, because that would make it impossible for the user
- to interrupt the program through Ctrl-C or Ctrl-Break. */
-# define SET_BINARY(fd) ((void) (!isatty (fd) ? (set_binary_mode (fd, O_BINARY), 0) : 0))
+extern int set_binary_mode (int fd, int mode);
#else
-# define SET_BINARY(fd) ((void) set_binary_mode (fd, O_BINARY))
+BINARY_IO_INLINE int
+set_binary_mode (int fd, int mode)
+{
+ return __gl_setmode (fd, mode);
+}
#endif
+/* This macro is obsolescent. */
+#define SET_BINARY(fd) ((void) set_binary_mode (fd, O_BINARY))
+
_GL_INLINE_HEADER_END
#endif /* _BINARY_H */