sigcompat.c revision 51870
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 36static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: head/lib/libc/compat-43/sigcompat.c 51870 1999-10-02 19:24:24Z marcel $"; 40#endif /* LIBC_SCCS and not lint */ 41 42#include <sys/param.h> 43#include <signal.h> 44 45int 46sigvec(signo, sv, osv) 47 int signo; 48 struct sigvec *sv, *osv; 49{ 50 int ret; 51 52 if (sv) 53 sv->sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */ 54 ret = osigaction(signo, (struct osigaction *)sv, 55 (struct osigaction *)osv); 56 if (ret == 0 && osv) 57 osv->sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */ 58 return (ret); 59} 60 61int 62sigsetmask(mask) 63 int mask; 64{ 65 sigset_t set, oset; 66 int n; 67 68 sigemptyset(&set); 69 set.__bits[0] = mask; 70 n = sigprocmask(SIG_SETMASK, &set, &oset); 71 if (n) 72 return (n); 73 return (oset.__bits[0]); 74} 75 76int 77sigblock(mask) 78 int mask; 79{ 80 sigset_t set, oset; 81 int n; 82 83 sigemptyset(&set); 84 set.__bits[0] = mask; 85 n = sigprocmask(SIG_BLOCK, &set, &oset); 86 if (n) 87 return (n); 88 return (oset.__bits[0]); 89} 90 91int 92sigpause(mask) 93 int mask; 94{ 95 sigset_t set; 96 97 sigemptyset(&set); 98 set.__bits[0] = mask; 99 return (sigsuspend(&set)); 100} 101