1 /* $NetBSD: sigcompat.c,v 1.13 2005/12/24 21:11:16 perry 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 1.13 2005/12/24 21:11:16 perry Exp $"); 38 #endif 39 #endif /* LIBC_SCCS and not lint */ 40 41 #include <sys/param.h> 42 #include <signal.h> 43 #include <compat/sys/signal.h> 44 45 static inline void sv2sa(struct sigaction *, const struct sigvec *); 46 static inline void sa2sv(struct sigvec *, const struct sigaction *); 47 48 static inline void 49 sv2sa(struct sigaction *sa, const struct sigvec *sv) 50 { 51 sigemptyset(&sa->sa_mask); 52 sa->sa_mask.__bits[0] = sv->sv_mask; 53 sa->sa_handler = sv->sv_handler; 54 sa->sa_flags = sv->sv_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */ 55 } 56 57 static inline void 58 sa2sv(struct sigvec *sv, const struct sigaction *sa) 59 { 60 sv->sv_mask = sa->sa_mask.__bits[0]; 61 sv->sv_handler = sa->sa_handler; 62 sv->sv_flags = sa->sa_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */ 63 } 64 65 int 66 sigvec(int signo, struct sigvec *nsv, struct sigvec *osv) 67 { 68 int ret; 69 struct sigaction osa, nsa; 70 71 if (nsv) 72 sv2sa(&nsa, nsv); 73 74 ret = sigaction(signo, nsv ? &nsa : NULL, osv ? &osa : NULL); 75 76 if (ret == 0 && osv) 77 sa2sv(osv, &osa); 78 79 return (ret); 80 } 81 82 int 83 sigsetmask(int mask) 84 { 85 sigset_t nmask, omask; 86 int n; 87 88 sigemptyset(&nmask); 89 nmask.__bits[0] = mask; 90 91 n = sigprocmask(SIG_SETMASK, &nmask, &omask); 92 if (n) 93 return (n); 94 return (omask.__bits[0]); 95 } 96 97 int 98 sigblock(int mask) 99 { 100 sigset_t nmask, omask; 101 int n; 102 103 sigemptyset(&nmask); 104 nmask.__bits[0] = mask; 105 106 n = sigprocmask(SIG_BLOCK, &nmask, &omask); 107 if (n) 108 return (n); 109 return (omask.__bits[0]); 110 } 111 112 int 113 sigpause(int mask) 114 { 115 sigset_t nmask; 116 117 sigemptyset(&nmask); 118 nmask.__bits[0] = mask; 119 return (sigsuspend(&nmask)); 120 } 121