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 34 #if defined(LIBC_SCCS) && !defined(lint) 35 #if 0 36 static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD$"; 40 #endif /* LIBC_SCCS and not lint */ 41 42 #include <sys/param.h> 43 #include <signal.h> 44 45 int 46 sigvec(signo, sv, osv) 47 int signo; 48 struct sigvec *sv, *osv; 49 { 50 struct sigaction sa, osa; 51 struct sigaction *sap, *osap; 52 int ret; 53 54 if (sv != NULL) { 55 sa.sa_handler = sv->sv_handler; 56 sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT; 57 sigemptyset(&sa.sa_mask); 58 sa.sa_mask.__bits[0] = sv->sv_mask; 59 sap = &sa; 60 } else 61 sap = NULL; 62 osap = osv != NULL ? &osa : NULL; 63 ret = sigaction(signo, sap, osap); 64 if (ret == 0 && osv != NULL) { 65 osv->sv_handler = osa.sa_handler; 66 osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT; 67 osv->sv_mask = osa.sa_mask.__bits[0]; 68 } 69 return (ret); 70 } 71 72 int 73 sigsetmask(mask) 74 int mask; 75 { 76 sigset_t set, oset; 77 int n; 78 79 sigemptyset(&set); 80 set.__bits[0] = mask; 81 n = sigprocmask(SIG_SETMASK, &set, &oset); 82 if (n) 83 return (n); 84 return (oset.__bits[0]); 85 } 86 87 int 88 sigblock(mask) 89 int mask; 90 { 91 sigset_t set, oset; 92 int n; 93 94 sigemptyset(&set); 95 set.__bits[0] = mask; 96 n = sigprocmask(SIG_BLOCK, &set, &oset); 97 if (n) 98 return (n); 99 return (oset.__bits[0]); 100 } 101 102 int 103 sigpause(mask) 104 int mask; 105 { 106 sigset_t set; 107 108 sigemptyset(&set); 109 set.__bits[0] = mask; 110 return (sigsuspend(&set)); 111 } 112