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 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