| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1993-2016 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 <stdlib.h> |
| 29 | #if _LIBC |
| 30 | # include "../iconv/gconv_int.h" |
| 31 | # include <shlib-compat.h> |
| 32 | #else |
| 33 | # define SHLIB_COMPAT(a, b, c) 0 |
| 34 | # define _IO_new_fclose fclose |
| 35 | #endif |
| 36 | |
| 37 | int |
| 38 | _IO_new_fclose (_IO_FILE *fp) |
| 39 | { |
| 40 | int status; |
| 41 | |
| 42 | CHECK_FILE(fp, EOF); |
| 43 | |
| 44 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) |
| 45 | /* We desperately try to help programs which are using streams in a |
| 46 | strange way and mix old and new functions. Detect old streams |
| 47 | here. */ |
| 48 | if (_IO_vtable_offset (fp) != 0) |
| 49 | return _IO_old_fclose (fp); |
| 50 | #endif |
| 51 | |
| 52 | /* First unlink the stream. */ |
| 53 | if (fp->_IO_file_flags & _IO_IS_FILEBUF) |
| 54 | _IO_un_link ((struct _IO_FILE_plus *) fp); |
| 55 | |
| 56 | _IO_acquire_lock (fp); |
| 57 | if (fp->_IO_file_flags & _IO_IS_FILEBUF) |
| 58 | status = _IO_file_close_it (fp); |
| 59 | else |
| 60 | status = fp->_flags & _IO_ERR_SEEN ? -1 : 0; |
| 61 | _IO_release_lock (fp); |
| 62 | _IO_FINISH (fp); |
| 63 | if (fp->_mode > 0) |
| 64 | { |
| 65 | #if _LIBC |
| 66 | /* This stream has a wide orientation. This means we have to free |
| 67 | the conversion functions. */ |
| 68 | struct _IO_codecvt *cc = fp->_codecvt; |
| 69 | |
| 70 | __libc_lock_lock (__gconv_lock); |
| 71 | __gconv_release_step (cc->__cd_in.__cd.__steps); |
| 72 | __gconv_release_step (cc->__cd_out.__cd.__steps); |
| 73 | __libc_lock_unlock (__gconv_lock); |
| 74 | #endif |
| 75 | } |
| 76 | else |
| 77 | { |
| 78 | if (_IO_have_backup (fp)) |
| 79 | _IO_free_backup_area (fp); |
| 80 | } |
| 81 | if (fp != _IO_stdin && fp != _IO_stdout && fp != _IO_stderr) |
| 82 | { |
| 83 | fp->_IO_file_flags = 0; |
| 84 | free(fp); |
| 85 | } |
| 86 | |
| 87 | return status; |
| 88 | } |
| 89 | |
| 90 | #ifdef _LIBC |
| 91 | versioned_symbol (libc, _IO_new_fclose, _IO_fclose, GLIBC_2_1); |
| 92 | strong_alias (_IO_new_fclose, __new_fclose) |
| 93 | versioned_symbol (libc, __new_fclose, fclose, GLIBC_2_1); |
| 94 | #endif |