/* An fseeko() function that, together with fflush(), is POSIX compliant.
- Copyright (C) 2007-2011 Free Software Foundation, Inc.
+ Copyright (C) 2007-2012 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, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ with this program; if not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
&& fp->__get_limit == fp->__bufp
&& fp->__put_limit == fp->__bufp
&& !fp->__pushed_back)
+#elif defined EPLAN9 /* Plan9 */
+ if (fp->rp == fp->buf
+ && fp->wp == fp->buf)
#else
#error "Please port gnulib fseeko.c to your platform! Look at the code in fpurge.c, then report this to bug-gnulib."
#endif
{
- /* We get here when an fflush() call immediately preceded this one. We
- know there are no buffers.
- POSIX requires us to modify the file descriptor's position.
- But we cannot position beyond end of file here. */
- off_t pos =
- lseek (fileno (fp),
- whence == SEEK_END && offset > 0 ? 0 : offset,
- whence);
+ /* We get here when an fflush() call immediately preceded this one (or
+ if ftell() has created buffers but no I/O has occurred on a
+ newly-opened stream). We know there are no buffers. */
+ off_t pos = lseek (fileno (fp), offset, whence);
if (pos == -1)
{
#if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
fp->__offset = pos;
fp->__eof = 0;
#endif
- /* If we were not requested to position beyond end of file, we're
- done. */
- if (!(whence == SEEK_END && offset > 0))
- return 0;
+ return 0;
}
return fseeko (fp, offset, whence);
}