1/* Copyright (C) 1993,1995,1996,1997,1998,2000,2001,2002
2   Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, write to the Free
17   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18   02111-1307 USA.
19
20   As a special exception, if you link the code in this file with
21   files compiled with a GNU compiler to produce an executable,
22   that does not cause the resulting executable to be covered by
23   the GNU Lesser General Public License.  This exception does not
24   however invalidate any other reasons why the executable file
25   might be covered by the GNU Lesser General Public License.
26   This exception applies to code released by its copyright holders
27   in files containing the exception.  */
28
29#include "libioP.h"
30#include "stdio.h"
31#include <stdlib.h>
32
33#include <fd_to_filename.h>
34
35FILE *
36freopen64 (filename, mode, fp)
37     const char* filename;
38     const char* mode;
39     FILE *fp;
40{
41#ifdef _G_OPEN64
42  FILE *result;
43  int fd = -1;
44  CHECK_FILE (fp, NULL);
45  if (!(fp->_flags & _IO_IS_FILEBUF))
46    return NULL;
47  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
48  _IO_flockfile (fp);
49  if (filename == NULL && _IO_fileno (fp) >= 0)
50    {
51      fd = __dup (_IO_fileno (fp));
52      if (fd != -1)
53	filename = fd_to_filename (fd);
54    }
55  INTUSE(_IO_file_close_it) (fp);
56  _IO_JUMPS ((struct _IO_FILE_plus *) fp) = &INTUSE(_IO_file_jumps);
57//  if (fp->_vtable_offset == 0 && fp->_wide_data != NULL)
58//    fp->_wide_data->_wide_vtable = &INTUSE(_IO_wfile_jumps);
59  result = INTUSE(_IO_file_fopen) (fp, filename, mode, 0);
60  if (result != NULL)
61    result = __fopen_maybe_mmap (result);
62  if (result != NULL)
63    /* unbound stream orientation */
64    result->_mode = 0;
65  if (fd != -1)
66    {
67      __close (fd);
68      if (filename != NULL)
69	free ((char *) filename);
70    }
71  _IO_funlockfile (fp);
72  _IO_cleanup_region_end (0);
73  return result;
74#else
75  __set_errno (ENOSYS);
76  return NULL;
77#endif
78}
79