1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/param.h> 31 #include <signal.h> 32 33 int 34 sigvec(int signo, struct sigvec *sv, struct sigvec *osv) 35 { 36 int ret; 37 struct sigvec nsv; 38 39 if (sv) { 40 nsv = *sv; 41 nsv.sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */ 42 } 43 ret = sigaction(signo, sv ? (struct sigaction *)&nsv : NULL, 44 (struct sigaction *)osv); 45 if (ret == 0 && osv) 46 osv->sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */ 47 return (ret); 48 } 49 50 int 51 sigsetmask(int mask) 52 { 53 int omask, n; 54 55 n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask); 56 if (n) 57 return (n); 58 return (omask); 59 } 60 61 int 62 sigblock(int mask) 63 { 64 int omask, n; 65 66 n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask); 67 if (n) 68 return (n); 69 return (omask); 70 } 71 72 int 73 sigpause(int mask) 74 { 75 return (sigsuspend((sigset_t *)&mask)); 76 } 77