| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* MT support function to get address of `errno' variable, linuxthreads |
| 2 | version. |
| 3 | Copyright (C) 1996, 1998, 2002, 2003, 2004 Free Software Foundation, Inc. |
| 4 | This file is part of the GNU C Library. |
| 5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or |
| 7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either |
| 9 | version 2.1 of the License, or (at your option) any later version. |
| 10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | Lesser General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library; if not, write to the Free |
| 18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 19 | 02111-1307 USA. */ |
| 20 | |
| 21 | #include <errno.h> |
| 22 | #include <linuxthreads/internals.h> |
| 23 | #include <sysdep-cancel.h> |
| 24 | |
| 25 | #if ! USE___THREAD && !RTLD_PRIVATE_ERRNO |
| 26 | #undef errno |
| 27 | extern int errno; |
| 28 | #endif |
| 29 | |
| 30 | int * |
| 31 | #if ! USE___THREAD |
| 32 | weak_const_function |
| 33 | #endif |
| 34 | __errno_location (void) |
| 35 | { |
| 36 | #if ! USE___THREAD && !defined NOT_IN_libc |
| 37 | if (! SINGLE_THREAD_P) |
| 38 | { |
| 39 | pthread_descr self = thread_self(); |
| 40 | return LIBC_THREAD_GETMEM (self, p_errnop); |
| 41 | } |
| 42 | #endif |
| 43 | return &errno; |
| 44 | } |
| 45 | libc_hidden_def (__errno_location) |