1 /* $NetBSD: sigcompat.c,v 1.11 2003/08/07 16:42:40 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93"; 36 #else 37 __RCSID("$NetBSD: sigcompat.c,v 1.11 2003/08/07 16:42:40 agc Exp $"); 38 #endif 39 #endif /* LIBC_SCCS and not lint */ 40 41 #include <sys/param.h> 42 #include <signal.h> 43 44 static __inline void sv2sa __P((struct sigaction *, const struct sigvec *)); 45 static __inline void sa2sv __P((struct sigvec *, const struct sigaction *)); 46 47 static __inline void 48 sv2sa(sa, sv) 49 struct sigaction *sa; 50 const struct sigvec *sv; 51 { 52 sigemptyset(&sa->sa_mask); 53 sa->sa_mask.__bits[0] = sv->sv_mask; 54 sa->sa_handler = sv->sv_handler; 55 sa->sa_flags = sv->sv_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */ 56 } 57 58 static __inline void 59 sa2sv(sv, sa) 60 struct sigvec *sv; 61 const struct sigaction *sa; 62 { 63 sv->sv_mask = sa->sa_mask.__bits[0]; 64 sv->sv_handler = sa->sa_handler; 65 sv->sv_flags = sa->sa_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */ 66 } 67 68 int 69 sigvec(signo, nsv, osv) 70 int signo; 71 struct sigvec *nsv, *osv; 72 { 73 int ret; 74 struct sigaction osa, nsa; 75 76 if (nsv) 77 sv2sa(&nsa, nsv); 78 79 ret = sigaction(signo, nsv ? &nsa : NULL, osv ? &osa : NULL); 80 81 if (ret == 0 && osv) 82 sa2sv(osv, &osa); 83 84 return (ret); 85 } 86 87 int 88 sigsetmask(mask) 89 int mask; 90 { 91 sigset_t nmask, omask; 92 int n; 93 94 sigemptyset(&nmask); 95 nmask.__bits[0] = mask; 96 97 n = sigprocmask(SIG_SETMASK, &nmask, &omask); 98 if (n) 99 return (n); 100 return (omask.__bits[0]); 101 } 102 103 int 104 sigblock(mask) 105 int mask; 106 { 107 sigset_t nmask, omask; 108 int n; 109 110 sigemptyset(&nmask); 111 nmask.__bits[0] = mask; 112 113 n = sigprocmask(SIG_BLOCK, &nmask, &omask); 114 if (n) 115 return (n); 116 return (omask.__bits[0]); 117 } 118 119 int 120 sigpause(mask) 121 int mask; 122 { 123 sigset_t nmask; 124 125 sigemptyset(&nmask); 126 nmask.__bits[0] = mask; 127 return (sigsuspend(&nmask)); 128 } 129