1 | /* Copyright (C) 1993-2017 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. |
17 | |
18 | As a special exception, if you link the code in this file with |
19 | files compiled with a GNU compiler to produce an executable, |
20 | that does not cause the resulting executable to be covered by |
21 | the GNU Lesser General Public License. This exception does not |
22 | however invalidate any other reasons why the executable file |
23 | might be covered by the GNU Lesser General Public License. |
24 | This exception applies to code released by its copyright holders |
25 | in files containing the exception. */ |
26 | |
27 | #include "libioP.h" |
28 | #include <errno.h> |
29 | |
30 | #include <shlib-compat.h> |
31 | #if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2) |
32 | |
33 | int |
34 | attribute_compat_text_section |
35 | _IO_old_fgetpos64 (_IO_FILE *fp, _IO_fpos64_t *posp) |
36 | { |
37 | _IO_off64_t pos; |
38 | CHECK_FILE (fp, EOF); |
39 | _IO_acquire_lock (fp); |
40 | pos = _IO_seekoff_unlocked (fp, 0, _IO_seek_cur, 0); |
41 | if (_IO_in_backup (fp) && pos != _IO_pos_BAD) |
42 | pos -= fp->_IO_save_end - fp->_IO_save_base; |
43 | _IO_release_lock (fp); |
44 | if (pos == _IO_pos_BAD) |
45 | { |
46 | /* ANSI explicitly requires setting errno to a positive value on |
47 | failure. */ |
48 | #ifdef EIO |
49 | if (errno == 0) |
50 | __set_errno (EIO); |
51 | #endif |
52 | return EOF; |
53 | } |
54 | posp->__pos = pos; |
55 | return 0; |
56 | } |
57 | |
58 | #ifdef weak_alias |
59 | compat_symbol (libc, _IO_old_fgetpos64, _IO_fgetpos64, GLIBC_2_1); |
60 | strong_alias (_IO_old_fgetpos64, __old_fgetpos64) |
61 | compat_symbol (libc, __old_fgetpos64, fgetpos64, GLIBC_2_1); |
62 | #endif |
63 | |
64 | #endif |
65 | |