| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 1993-2015 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 | /* 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 |
| 32 | |
| 33 | #include "libioP.h" |
| 34 | |
| 35 | #undef _IO_new_fgetpos64 |
| 36 | #undef _IO_fgetpos64 |
| 37 | |
| 38 | #include <errno.h> |
| 39 | #include <stdlib.h> |
| 40 | #include <shlib-compat.h> |
| 41 | |
| 42 | int |
| 43 | _IO_new_fgetpos (fp, posp) |
| 44 | _IO_FILE *fp; |
| 45 | _IO_fpos_t *posp; |
| 46 | { |
| 47 | _IO_off64_t pos; |
| 48 | int result = 0; |
| 49 | CHECK_FILE (fp, EOF); |
| 50 | _IO_acquire_lock (fp); |
| 51 | pos = _IO_seekoff_unlocked (fp, 0, _IO_seek_cur, 0); |
| 52 | if (_IO_in_backup (fp) && pos != _IO_pos_BAD) |
| 53 | { |
| 54 | if (fp->_mode <= 0) |
| 55 | pos -= fp->_IO_save_end - fp->_IO_save_base; |
| 56 | } |
| 57 | if (pos == _IO_pos_BAD) |
| 58 | { |
| 59 | /* ANSI explicitly requires setting errno to a positive value on |
| 60 | failure. */ |
| 61 | #ifdef EIO |
| 62 | if (errno == 0) |
| 63 | __set_errno (EIO); |
| 64 | #endif |
| 65 | result = EOF; |
| 66 | } |
| 67 | else if ((_IO_off64_t) (__typeof (posp->__pos)) pos != pos) |
| 68 | { |
| 69 | #ifdef EOVERFLOW |
| 70 | __set_errno (EOVERFLOW); |
| 71 | #endif |
| 72 | result = EOF; |
| 73 | } |
| 74 | else |
| 75 | { |
| 76 | posp->__pos = pos; |
| 77 | if (fp->_mode > 0 |
| 78 | && (*fp->_codecvt->__codecvt_do_encoding) (fp->_codecvt) < 0) |
| 79 | /* This is a stateful encoding, safe the state. */ |
| 80 | posp->__state = fp->_wide_data->_IO_state; |
| 81 | } |
| 82 | |
| 83 | _IO_release_lock (fp); |
| 84 | return result; |
| 85 | } |
| 86 | |
| 87 | strong_alias (_IO_new_fgetpos, __new_fgetpos) |
| 88 | versioned_symbol (libc, _IO_new_fgetpos, _IO_fgetpos, GLIBC_2_2); |
| 89 | versioned_symbol (libc, __new_fgetpos, fgetpos, GLIBC_2_2); |
| 90 | |
| 91 | #ifdef __OFF_T_MATCHES_OFF64_T |
| 92 | strong_alias (_IO_new_fgetpos, _IO_new_fgetpos64) |
| 93 | strong_alias (_IO_new_fgetpos64, __new_fgetpos64) |
| 94 | versioned_symbol (libc, _IO_new_fgetpos64, _IO_fgetpos64, GLIBC_2_2); |
| 95 | versioned_symbol (libc, __new_fgetpos64, fgetpos64, GLIBC_2_2); |
| 96 | #endif |