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6591c335 | 1 | /* Copyright (C) 1993, 1995, 1996, 1997, 1998 Free Software Foundation, Inc. |
40a55d20 | 2 | This file is part of the GNU IO Library. |
96aa2d94 | 3 | |
40a55d20 UD |
4 | This library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU General Public License as | |
6 | published by the Free Software Foundation; either version 2, or (at | |
7 | your option) any later version. | |
96aa2d94 | 8 | |
40a55d20 UD |
9 | This library is distributed in the hope that it will be useful, but |
10 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | General Public License for more details. | |
96aa2d94 | 13 | |
40a55d20 UD |
14 | You should have received a copy of the GNU General Public License |
15 | along with this library; see the file COPYING. If not, write to | |
16 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, | |
17 | MA 02111-1307, USA. | |
96aa2d94 | 18 | |
40a55d20 UD |
19 | As a special exception, if you link this library with files |
20 | compiled with a GNU compiler to produce an executable, this does | |
21 | not cause the resulting executable to be covered by the GNU General | |
22 | Public License. This exception does not however invalidate any | |
23 | other reasons why the executable file might be covered by the GNU | |
24 | General Public License. */ | |
96aa2d94 RM |
25 | |
26 | #include "libioP.h" | |
27 | #include "stdio.h" | |
28 | ||
6973fc01 UD |
29 | #ifdef PIC |
30 | extern void *_IO_stdin_used; | |
31 | weak_extern (_IO_stdin_used); | |
32 | #endif | |
33 | ||
96aa2d94 | 34 | FILE* |
6973fc01 | 35 | freopen (filename, mode, fp) |
96aa2d94 RM |
36 | const char* filename; |
37 | const char* mode; | |
38 | FILE* fp; | |
39 | { | |
7c713e28 | 40 | FILE *result; |
96aa2d94 RM |
41 | CHECK_FILE (fp, NULL); |
42 | if (!(fp->_flags & _IO_IS_FILEBUF)) | |
43 | return NULL; | |
68dbb3a6 | 44 | _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp); |
edf5b2d7 | 45 | _IO_flockfile (fp); |
6591c335 | 46 | #if defined PIC && DO_VERSIONING |
6973fc01 UD |
47 | if (&_IO_stdin_used == NULL) |
48 | /* If the shared C library is used by the application binary which | |
49 | was linked against the older version of libio, we just use the | |
50 | older one even for internal use to avoid trouble since a pointer | |
51 | to the old libio may be passed into shared C library and wind | |
52 | up here. */ | |
53 | result = _IO_old_freopen (filename, mode, fp); | |
54 | else | |
55 | #endif | |
56 | result = _IO_freopen (filename, mode, fp); | |
68dbb3a6 | 57 | _IO_cleanup_region_end (1); |
7c713e28 | 58 | return result; |
96aa2d94 | 59 | } |