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1 | /* Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc. |
2 | This file is part of the GNU IO Library. | |
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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. | |
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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. | |
6599da04 | 13 | |
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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. | |
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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. */ | |
6599da04 JM |
25 | |
26 | #include "libioP.h" | |
27 | #include <errno.h> | |
dbfcb4be | 28 | /* ANSI explicitly requires setting errno to a positive value on failure. */ |
6599da04 JM |
29 | |
30 | int | |
dbfcb4be BK |
31 | _IO_fgetpos (fp, posp) |
32 | _IO_FILE* fp; | |
33 | _IO_fpos_t *posp; | |
6599da04 JM |
34 | { |
35 | _IO_fpos_t pos; | |
dbfcb4be BK |
36 | CHECK_FILE (fp, EOF); |
37 | _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp); | |
38 | _IO_flockfile (fp); | |
39 | pos = _IO_seekoff (fp, 0, _IO_seek_cur, 0); | |
40 | _IO_cleanup_region_end (1); | |
6599da04 JM |
41 | if (pos == _IO_pos_BAD) |
42 | { | |
43 | #ifdef EIO | |
44 | if (errno == 0) | |
dbfcb4be | 45 | __set_errno (EIO); |
6599da04 JM |
46 | #endif |
47 | return EOF; | |
48 | } | |
49 | *posp = pos; | |
50 | return 0; | |
51 | } | |
dbfcb4be BK |
52 | |
53 | #ifdef weak_alias | |
54 | weak_alias (_IO_fgetpos, fgetpos) | |
55 | #endif |