/* -*- buffer-read-only: t -*- vi: set ro: */
/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
/* An fseeko() function that, together with fflush(), is POSIX compliant.
- Copyright (C) 2007-2008 Free Software Foundation, Inc.
+ Copyright (C) 2007-2009 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
/* Get off_t and lseek. */
#include <unistd.h>
+#include "stdio-impl.h"
+
#undef fseeko
#if !HAVE_FSEEKO
# undef fseek
#endif
/* These tests are based on fpurge.c. */
-#if defined _IO_ferror_unlocked /* GNU libc, BeOS */
+#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
if (fp->_IO_read_end == fp->_IO_read_ptr
&& fp->_IO_write_ptr == fp->_IO_write_base
&& fp->_IO_save_base == NULL)
-#elif defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
-# if defined __NetBSD__ || defined __OpenBSD__ /* NetBSD, OpenBSD */
- /* See <http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
- and <http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup> */
-# define fp_ub ((struct { struct __sbuf _ub; } *) fp->_ext._base)->_ub
-# else /* FreeBSD, MacOS X, Cygwin */
-# define fp_ub fp->_ub
-# endif
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
# if defined __SL64 && defined __SCLE /* Cygwin */
if ((fp->_flags & __SL64) == 0)
{
fclose (tmp);
}
# endif
- if (fp->_p == fp->_bf._base
- && fp->_r == 0
- && fp->_w == ((fp->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
- ? fp->_bf._size
- : 0)
+ if (fp_->_p == fp_->_bf._base
+ && fp_->_r == 0
+ && fp_->_w == ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
+ ? fp_->_bf._size
+ : 0)
&& fp_ub._base == NULL)
+#elif defined __EMX__ /* emx+gcc */
+ if (fp->_ptr == fp->_buffer
+ && fp->_rcount == 0
+ && fp->_wcount == 0
+ && fp->_ungetc_count == 0)
#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
-# if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */
-# define fp_ ((struct { unsigned char *_ptr; \
- unsigned char *_base; \
- unsigned char *_end; \
- long _cnt; \
- int _file; \
- unsigned int _flag; \
- } *) fp)
if (fp_->_ptr == fp_->_base
&& (fp_->_ptr == NULL || fp_->_cnt == 0))
-# else
-# if defined _SCO_DS /* OpenServer */
-# define _base __base
-# define _ptr __ptr
-# define _cnt __cnt
-# endif
- if (fp->_ptr == fp->_base
- && (fp->_ptr == NULL || fp->_cnt == 0))
-# endif
#elif defined __UCLIBC__ /* uClibc */
if (((fp->__modeflags & __FLAG_WRITING) == 0
|| fp->__bufpos == fp->__bufstart)
#error "Please port gnulib fseeko.c to your platform! Look at the code in fpurge.c, then report this to bug-gnulib."
#endif
{
- off_t pos = lseek (fileno (fp), offset, whence);
+ /* 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);
if (pos == -1)
{
-#if defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
- fp->_flags &= ~__SOFF;
+#if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+ fp_->_flags &= ~__SOFF;
#endif
return -1;
}
- else
- {
-#if defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
- fp->_offset = pos;
- fp->_flags |= __SOFF;
- fp->_flags &= ~__SEOF;
+
+#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+ fp->_flags &= ~_IO_EOF_SEEN;
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+ fp_->_offset = pos;
+ fp_->_flags |= __SOFF;
+ fp_->_flags &= ~__SEOF;
+#elif defined __EMX__ /* emx+gcc */
+ fp->_flags &= ~_IOEOF;
#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
-# if defined _SCO_DS /* OpenServer */
-# define _flag __flag
-# endif
- fp->_flag &= ~_IOEOF;
+ fp->_flag &= ~_IOEOF;
#endif
- return 0;
- }
+ /* If we were not requested to position beyond end of file, we're
+ done. */
+ if (!(whence == SEEK_END && offset > 0))
+ return 0;
}
- else
- return fseeko (fp, offset, whence);
+ return fseeko (fp, offset, whence);
}