1 /* 2 * Copyright (c) 1989, 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 * $FreeBSD: src/lib/libc/compat-43/sigcompat.c,v 1.7 2000/01/27 23:06:04 jasone Exp $ 34 * $DragonFly: src/lib/libc/compat-43/sigcompat.c,v 1.2 2003/06/17 04:26:41 dillon Exp $ 35 * 36 * @(#)sigcompat.c 8.1 (Berkeley) 6/2/93 37 * $FreeBSD: src/lib/libc/compat-43/sigcompat.c,v 1.7 2000/01/27 23:06:04 jasone Exp $ 38 */ 39 40 #include <sys/param.h> 41 #include <signal.h> 42 43 int 44 sigvec(signo, sv, osv) 45 int signo; 46 struct sigvec *sv, *osv; 47 { 48 struct sigaction sa, osa; 49 struct sigaction *sap, *osap; 50 int ret; 51 52 if (sv != NULL) { 53 sa.sa_handler = sv->sv_handler; 54 sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT; 55 sigemptyset(&sa.sa_mask); 56 sa.sa_mask.__bits[0] = sv->sv_mask; 57 sap = &sa; 58 } else 59 sap = NULL; 60 osap = osv != NULL ? &osa : NULL; 61 ret = sigaction(signo, sap, osap); 62 if (ret == 0 && osv != NULL) { 63 osv->sv_handler = osa.sa_handler; 64 osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT; 65 osv->sv_mask = osa.sa_mask.__bits[0]; 66 } 67 return (ret); 68 } 69 70 int 71 sigsetmask(mask) 72 int mask; 73 { 74 sigset_t set, oset; 75 int n; 76 77 sigemptyset(&set); 78 set.__bits[0] = mask; 79 n = sigprocmask(SIG_SETMASK, &set, &oset); 80 if (n) 81 return (n); 82 return (oset.__bits[0]); 83 } 84 85 int 86 sigblock(mask) 87 int mask; 88 { 89 sigset_t set, oset; 90 int n; 91 92 sigemptyset(&set); 93 set.__bits[0] = mask; 94 n = sigprocmask(SIG_BLOCK, &set, &oset); 95 if (n) 96 return (n); 97 return (oset.__bits[0]); 98 } 99 100 int 101 sigpause(mask) 102 int mask; 103 { 104 sigset_t set; 105 106 sigemptyset(&set); 107 set.__bits[0] = mask; 108 return (_sigsuspend(&set)); 109 } 110