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d614a753 | 1 | /* Copyright (C) 1994-2020 Free Software Foundation, Inc. |
c84142e8 UD |
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 | |
41bdb6e2 AJ |
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. | |
c84142e8 UD |
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. |
c84142e8 | 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/>. */ |
28f540f4 RM |
17 | |
18 | #include <hurd.h> | |
19 | #include <hurd/signal.h> | |
20 | #include <hurd/msg.h> | |
21 | #include <setjmp.h> | |
22 | ||
23 | /* Handle signal SIGNO in the calling thread. | |
24 | If SS is not NULL it is the sigstate for the calling thread; | |
25 | SS->lock is held on entry and released before return. */ | |
26 | ||
ee0976f7 | 27 | int |
28f540f4 | 28 | _hurd_raise_signal (struct hurd_sigstate *ss, |
0e3426bb | 29 | int signo, const struct hurd_signal_detail *detail) |
28f540f4 | 30 | { |
785ec62d | 31 | if (signo <= 0 || signo >= NSIG) |
fab94894 ST |
32 | { |
33 | if (ss) | |
34 | __spin_unlock (&ss->lock); | |
35 | return EINVAL; | |
36 | } | |
785ec62d | 37 | |
28f540f4 RM |
38 | if (ss == NULL) |
39 | { | |
40 | ss = _hurd_self_sigstate (); | |
41 | __spin_lock (&ss->lock); | |
42 | } | |
43 | ||
44 | /* Mark SIGNO as pending to be delivered. */ | |
45 | __sigaddset (&ss->pending, signo); | |
0e3426bb | 46 | ss->pending_data[signo] = *detail; |
28f540f4 RM |
47 | |
48 | __spin_unlock (&ss->lock); | |
49 | ||
813de3b3 RM |
50 | /* Send a message to the signal thread so it will wake up and check for |
51 | pending signals. This is a generic "poll request" message (SIGNO==0) | |
52 | rather than delivering this signal and its detail, because we have | |
53 | already marked the signal as pending for the particular thread we | |
54 | want. Generating the signal with an RPC might deliver it to some | |
55 | other thread. */ | |
3fe29ca0 | 56 | return __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ()); |
28f540f4 | 57 | } |
a758c293 | 58 | libc_hidden_def (_hurd_raise_signal) |