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 <signal.h> 31 32 int 33 sigvec(int signo, struct sigvec *sv, struct sigvec *osv) 34 { 35 int ret; 36 struct sigvec nsv; 37 38 if (sv) { 39 nsv = *sv; 40 nsv.sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */ 41 } 42 ret = sigaction(signo, sv ? (struct sigaction *)&nsv : NULL, 43 (struct sigaction *)osv); 44 if (ret == 0 && osv) 45 osv->sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */ 46 return (ret); 47 } 48 49 int 50 sigsetmask(int mask) 51 { 52 int omask, n; 53 54 n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask); 55 if (n) 56 return (n); 57 return (omask); 58 } 59 60 int 61 sigblock(int mask) 62 { 63 int omask, n; 64 65 n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask); 66 if (n) 67 return (n); 68 return (omask); 69 } 70 71 int 72 sigpause(int mask) 73 { 74 return (sigsuspend((sigset_t *)&mask)); 75 } 76