44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
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/*
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Copyright (C) 1993 Free Software Foundation
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This file is part of the GNU IO Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#include <libioP.h>
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_IO_pos_t
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DEFUN(_IO_seekoff, (fp, offset, dir, mode),
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_IO_FILE* fp AND _IO_off_t offset AND int dir AND int mode)
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{
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/* If we have a backup buffer, get rid of it, since the __seekoff
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callback may not know to do the right thing about it.
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This may be over-kill, but it'll do for now. TODO */
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if (_IO_have_backup (fp))
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{
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if (dir == _IO_seek_cur && _IO_in_backup (fp))
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offset -= fp->_IO_read_end - fp->_IO_read_ptr;
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_IO_free_backup_area (fp);
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}
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return _IO_SEEKOFF (fp, offset, dir, mode);
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}
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