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2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
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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 | |
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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. | |
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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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
fd26970f | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
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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 | |
9d46370c | 24 | __sysv_signal (int sig, __sighandler_t handler) |
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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) |