1 | /* Copyright (C) 1991-2022 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 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <signal.h> |
20 | |
21 | /* Set the handler for the signal SIG to HANDLER, |
22 | returning the old handler, or SIG_ERR on error. */ |
23 | __sighandler_t |
24 | __sysv_signal (int sig, __sighandler_t handler) |
25 | { |
26 | /* Check signal extents to protect __sigismember. */ |
27 | if (handler == SIG_ERR || sig < 1 || sig >= NSIG) |
28 | { |
29 | __set_errno (EINVAL); |
30 | return SIG_ERR; |
31 | } |
32 | |
33 | __set_errno (ENOSYS); |
34 | |
35 | return SIG_ERR; |
36 | } |
37 | weak_alias (__sysv_signal, sysv_signal) |
38 | |
39 | stub_warning (sysv_signal) |
40 | |