/* Retrieve information about a FILE stream.
- Copyright (C) 2007-2012 Free Software Foundation, Inc.
+ Copyright (C) 2007-2013 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
return (fp->_IO_read_end - fp->_IO_read_ptr)
+ (fp->_flags & _IO_IN_BACKUP ? fp->_IO_save_end - fp->_IO_save_base :
0);
-#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
if ((fp_->_flags & __SWR) != 0 || fp_->_r < 0)
return 0;
# if defined __DragonFly__
return (fp->__pushed_back
? fp->__get_limit - fp->__pushback_bufp + 1
: fp->__get_limit - fp->__bufp);
+#elif defined EPLAN9 /* Plan9 */
+ if (fp->state == 4 /* WR */ || fp->rp >= fp->wp)
+ return 0;
+ return fp->wp - fp->rp;
#elif defined SLOW_BUT_NO_HACKS /* users can define this */
abort ();
return 0;