1 /*-
2 * Copyright (c) 2008 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #ifndef _OPENSOLARIS_SYS_SIG_H_
28 #define _OPENSOLARIS_SYS_SIG_H_
29
30 #ifdef _KERNEL
31
32 #include <sys/param.h>
33 #include <sys/lock.h>
34 #include <sys/mutex.h>
35 #include <sys/proc.h>
36 #include <sys/signalvar.h>
37 #include <sys/debug.h>
38
39 #define FORREAL 0
40 #define JUSTLOOKING 1
41
42 static __inline int
issig(int why)43 issig(int why)
44 {
45 struct thread *td = curthread;
46 struct proc *p;
47 int sig;
48
49 ASSERT(why == FORREAL || why == JUSTLOOKING);
50 if (SIGPENDING(td)) {
51 if (why == JUSTLOOKING)
52 return (1);
53 p = td->td_proc;
54 PROC_LOCK(p);
55 mtx_lock(&p->p_sigacts->ps_mtx);
56 sig = cursig(td);
57 mtx_unlock(&p->p_sigacts->ps_mtx);
58 PROC_UNLOCK(p);
59 if (sig != 0)
60 return (1);
61 }
62 return (0);
63 }
64
65 #endif /* _KERNEL */
66
67 #endif /* _OPENSOLARIS_SYS_SIG_H_ */
68