/* An fseeko() function that, together with fflush(), is POSIX compliant.
- Copyright (C) 2007-2009 Free Software Foundation, Inc.
+ Copyright (C) 2007-2011 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
#include "stdio-impl.h"
+int
+fseeko (FILE *fp, off_t offset, int whence)
#undef fseeko
#if !HAVE_FSEEKO
# undef fseek
# define fseeko fseek
#endif
-
-int
-rpl_fseeko (FILE *fp, off_t offset, int whence)
{
#if LSEEK_PIPE_BROKEN
/* mingw gives bogus answers rather than failure on non-seekable files. */
&& fp->_rcount == 0
&& fp->_wcount == 0
&& fp->_ungetc_count == 0)
-#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
+#elif defined __minix /* Minix */
+ if (fp_->_ptr == fp_->_buf
+ && (fp_->_ptr == NULL || fp_->_count == 0))
+#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
if (fp_->_ptr == fp_->_base
&& (fp_->_ptr == NULL || fp_->_cnt == 0))
#elif defined __UCLIBC__ /* uClibc */
#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 */
#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
fp->_flags &= ~_IO_EOF_SEEN;
+ fp->_offset = pos;
#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
# if defined __CYGWIN__
/* fp_->_offset is typed as an integer. */
fp_->_flags &= ~__SEOF;
#elif defined __EMX__ /* emx+gcc */
fp->_flags &= ~_IOEOF;
-#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
+#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
fp->_flag &= ~_IOEOF;
#elif defined __MINT__ /* Atari FreeMiNT */
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);
}