1 /* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)signalvar.h 8.6 (Berkeley) 2/19/95 34 * $FreeBSD: src/sys/sys/signalvar.h,v 1.34.2.1 2000/05/16 06:58:05 dillon Exp $ 35 * $DragonFly: src/sys/sys/signal2.h,v 1.1 2007/02/25 23:17:13 corecode Exp $ 36 */ 37 38 #ifndef _SYS_SIGNAL2_H 39 #define _SYS_SIGNAL2_H 40 41 #include <sys/proc.h> 42 43 /* 44 * Inline functions: 45 */ 46 /* 47 * Determine which signals are pending for a lwp. 48 */ 49 static __inline sigset_t 50 lwp_sigpend(struct lwp *lp) 51 { 52 sigset_t set; 53 54 set = lp->lwp_proc->p_siglist; 55 SIGSETOR(set, lp->lwp_siglist); 56 return (set); 57 } 58 59 /* 60 * Mark a signal as handled by the lwp. 61 */ 62 static __inline void 63 lwp_delsig(struct lwp *lp, int sig) 64 { 65 SIGDELSET(lp->lwp_siglist, sig); 66 SIGDELSET(lp->lwp_proc->p_siglist, sig); 67 } 68 69 #define CURSIG(lp) __cursig(lp) 70 #define CURSIGNB(lp) __cursignb(lp) 71 72 /* 73 * Determine signal that should be delivered to process p, the current 74 * process, 0 if none. If there is a pending stop signal with default 75 * action, the process stops in issignal(). 76 * 77 * MP SAFE 78 */ 79 static __inline 80 int 81 __cursig(struct lwp *lp) 82 { 83 struct proc *p; 84 sigset_t tmpset; 85 int r; 86 87 p = lp->lwp_proc; 88 tmpset = lwp_sigpend(lp); 89 SIGSETNAND(tmpset, lp->lwp_sigmask); 90 if (!(p->p_flag & P_TRACED) && SIGISEMPTY(tmpset)) 91 return(0); 92 r = issignal(lp); 93 return(r); 94 } 95 96 static __inline 97 int 98 __cursignb(struct lwp *lp) 99 { 100 struct proc *p; 101 sigset_t tmpset; 102 103 p = lp->lwp_proc; 104 tmpset = lwp_sigpend(lp); 105 SIGSETNAND(tmpset, lp->lwp_sigmask); 106 if ((!(p->p_flag & P_TRACED) && SIGISEMPTY(tmpset))) { 107 return(FALSE); 108 } 109 return (TRUE); 110 } 111 112 #endif 113