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688903eb | 1 | /* Copyright (C) 1993-2018 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
96aa2d94 | 3 | |
41bdb6e2 AJ |
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. | |
96aa2d94 | 8 | |
41bdb6e2 AJ |
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 | |
40a55d20 | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 | 12 | Lesser General Public License for more details. |
96aa2d94 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. | |
96aa2d94 | 17 | |
41bdb6e2 AJ |
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. */ | |
96aa2d94 | 26 | |
03af9520 RM |
27 | /* We need to avoid the header declarations of these, because |
28 | the types don't match _IO_fgetpos and then the compiler will | |
29 | complain about the mismatch when we do the alias below. */ | |
30 | #define _IO_new_fgetpos64 __renamed__IO_new_fgetpos64 | |
31 | #define _IO_fgetpos64 __renamed__IO_fgetpos64 | |
48a8f832 | 32 | #define fgetpos64 __renamed_fgetpos64 |
03af9520 | 33 | |
96aa2d94 | 34 | #include "libioP.h" |
03af9520 RM |
35 | |
36 | #undef _IO_new_fgetpos64 | |
37 | #undef _IO_fgetpos64 | |
48a8f832 | 38 | #undef fgetpos64 |
03af9520 | 39 | |
96aa2d94 | 40 | #include <errno.h> |
0f78390b | 41 | #include <stdlib.h> |
fd091d3f | 42 | #include <shlib-compat.h> |
96aa2d94 RM |
43 | |
44 | int | |
9d46370c | 45 | _IO_new_fgetpos (_IO_FILE *fp, _IO_fpos_t *posp) |
96aa2d94 | 46 | { |
3efdabe7 | 47 | _IO_off64_t pos; |
0f78390b | 48 | int result = 0; |
96aa2d94 | 49 | CHECK_FILE (fp, EOF); |
0261d33f | 50 | _IO_acquire_lock (fp); |
52a16e58 | 51 | pos = _IO_seekoff_unlocked (fp, 0, _IO_seek_cur, 0); |
3447be7b | 52 | if (_IO_in_backup (fp) && pos != _IO_pos_BAD) |
0f78390b | 53 | { |
40a982a9 | 54 | if (fp->_mode <= 0) |
0f78390b | 55 | pos -= fp->_IO_save_end - fp->_IO_save_base; |
0f78390b | 56 | } |
96aa2d94 RM |
57 | if (pos == _IO_pos_BAD) |
58 | { | |
40a55d20 UD |
59 | /* ANSI explicitly requires setting errno to a positive value on |
60 | failure. */ | |
96aa2d94 | 61 | if (errno == 0) |
c4029823 | 62 | __set_errno (EIO); |
3efdabe7 RM |
63 | result = EOF; |
64 | } | |
65 | else if ((_IO_off64_t) (__typeof (posp->__pos)) pos != pos) | |
66 | { | |
3efdabe7 | 67 | __set_errno (EOVERFLOW); |
0f78390b | 68 | result = EOF; |
96aa2d94 | 69 | } |
0f78390b UD |
70 | else |
71 | { | |
72 | posp->__pos = pos; | |
73 | if (fp->_mode > 0 | |
74 | && (*fp->_codecvt->__codecvt_do_encoding) (fp->_codecvt) < 0) | |
75 | /* This is a stateful encoding, safe the state. */ | |
76 | posp->__state = fp->_wide_data->_IO_state; | |
77 | } | |
78 | ||
0261d33f | 79 | _IO_release_lock (fp); |
0f78390b | 80 | return result; |
96aa2d94 RM |
81 | } |
82 | ||
d64b6ad0 | 83 | strong_alias (_IO_new_fgetpos, __new_fgetpos) |
fd091d3f UD |
84 | versioned_symbol (libc, _IO_new_fgetpos, _IO_fgetpos, GLIBC_2_2); |
85 | versioned_symbol (libc, __new_fgetpos, fgetpos, GLIBC_2_2); | |
03af9520 RM |
86 | |
87 | #ifdef __OFF_T_MATCHES_OFF64_T | |
88 | strong_alias (_IO_new_fgetpos, _IO_new_fgetpos64) | |
89 | strong_alias (_IO_new_fgetpos64, __new_fgetpos64) | |
90 | versioned_symbol (libc, _IO_new_fgetpos64, _IO_fgetpos64, GLIBC_2_2); | |
91 | versioned_symbol (libc, __new_fgetpos64, fgetpos64, GLIBC_2_2); | |
92 | #endif |