1 /* Retrieve information about a FILE stream.
2 Copyright (C) 2007-2010 Free Software Foundation, Inc.
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.
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.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 # include <stdio_ext.h>
26 #include "stdio-impl.h"
31 /* Most systems provide FILE as a struct and the necessary bitmask in
32 <stdio.h>, because they need it for implementing getc() and putc() as
34 #if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
35 # if HAVE___FLBF /* glibc >= 2.2 */
39 if (fp->_flags & _IO_LINE_BUF)
42 if (fp->_flags & _IO_UNBUFFERED)
45 #elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
46 if (fp_->_flags & __SLBF)
48 if (fp_->_flags & __SNBF)
51 #elif defined __EMX__ /* emx+gcc */
52 return fp->_flags & (_IOLBF | _IONBF | _IOFBF);
53 #elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
54 # if HAVE___FLBF /* Solaris >= 7 */
58 if (fp->_flag & _IOLBF)
61 if (fp_->_flag & _IONBF)
64 #elif defined __UCLIBC__ /* uClibc */
65 if (fp->__modeflags & __FLAG_LBF)
67 if (fp->__modeflags & __FLAG_NBF)
70 #elif defined __QNX__ /* QNX */
71 if (fp->_Mode & 0x400 /* _MLBF */)
73 if (fp->_Mode & 0x800 /* _MNBF */)
76 #elif defined __MINT__ /* Atari FreeMiNT */
79 return (fp->__bufsize > 0 ? _IOFBF : _IONBF);
81 #error "Please port gnulib fbufmode.c to your platform! Look at the setvbuf implementation."