158f0484fSRodney W. Grimes /* 258f0484fSRodney W. Grimes * Copyright (c) 1989, 1993 358f0484fSRodney W. Grimes * The Regents of the University of California. All rights reserved. 458f0484fSRodney W. Grimes * 558f0484fSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 658f0484fSRodney W. Grimes * modification, are permitted provided that the following conditions 758f0484fSRodney W. Grimes * are met: 858f0484fSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 958f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 1058f0484fSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 1158f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 1258f0484fSRodney W. Grimes * documentation and/or other materials provided with the distribution. 1358f0484fSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 1458f0484fSRodney W. Grimes * may be used to endorse or promote products derived from this software 1558f0484fSRodney W. Grimes * without specific prior written permission. 1658f0484fSRodney W. Grimes * 1758f0484fSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1858f0484fSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1958f0484fSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2058f0484fSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2158f0484fSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2258f0484fSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2358f0484fSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2458f0484fSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2558f0484fSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2658f0484fSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2758f0484fSRodney W. Grimes * SUCH DAMAGE. 2858f0484fSRodney W. Grimes */ 2958f0484fSRodney W. Grimes 3058f0484fSRodney W. Grimes #if defined(LIBC_SCCS) && !defined(lint) 3158f0484fSRodney W. Grimes static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93"; 3258f0484fSRodney W. Grimes #endif /* LIBC_SCCS and not lint */ 33333fc21eSDavid E. O'Brien #include <sys/cdefs.h> 34333fc21eSDavid E. O'Brien __FBSDID("$FreeBSD$"); 3558f0484fSRodney W. Grimes 36d201fe46SDaniel Eischen #include "namespace.h" 3758f0484fSRodney W. Grimes #include <sys/param.h> 3858f0484fSRodney W. Grimes #include <signal.h> 399a6ceaceSKonstantin Belousov #include <string.h> 40d201fe46SDaniel Eischen #include "un-namespace.h" 41d201fe46SDaniel Eischen #include "libc_private.h" 4258f0484fSRodney W. Grimes 4351295a4dSJordan K. Hubbard int 4458f0484fSRodney W. Grimes sigvec(signo, sv, osv) 4558f0484fSRodney W. Grimes int signo; 4658f0484fSRodney W. Grimes struct sigvec *sv, *osv; 4758f0484fSRodney W. Grimes { 482bc2b292SJohn Polstra struct sigaction sa, osa; 492bc2b292SJohn Polstra struct sigaction *sap, *osap; 5058f0484fSRodney W. Grimes int ret; 5158f0484fSRodney W. Grimes 522bc2b292SJohn Polstra if (sv != NULL) { 532bc2b292SJohn Polstra sa.sa_handler = sv->sv_handler; 542bc2b292SJohn Polstra sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT; 552bc2b292SJohn Polstra sigemptyset(&sa.sa_mask); 562bc2b292SJohn Polstra sa.sa_mask.__bits[0] = sv->sv_mask; 572bc2b292SJohn Polstra sap = &sa; 582bc2b292SJohn Polstra } else 592bc2b292SJohn Polstra sap = NULL; 602bc2b292SJohn Polstra osap = osv != NULL ? &osa : NULL; 61d201fe46SDaniel Eischen ret = _sigaction(signo, sap, osap); 622bc2b292SJohn Polstra if (ret == 0 && osv != NULL) { 632bc2b292SJohn Polstra osv->sv_handler = osa.sa_handler; 642bc2b292SJohn Polstra osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT; 652bc2b292SJohn Polstra osv->sv_mask = osa.sa_mask.__bits[0]; 662bc2b292SJohn Polstra } 6758f0484fSRodney W. Grimes return (ret); 6858f0484fSRodney W. Grimes } 6958f0484fSRodney W. Grimes 7051295a4dSJordan K. Hubbard int 7158f0484fSRodney W. Grimes sigsetmask(mask) 7258f0484fSRodney W. Grimes int mask; 7358f0484fSRodney W. Grimes { 743cf3c5d9SMarcel Moolenaar sigset_t set, oset; 75e25ad0cbSMarcel Moolenaar int n; 7658f0484fSRodney W. Grimes 773cf3c5d9SMarcel Moolenaar sigemptyset(&set); 783cf3c5d9SMarcel Moolenaar set.__bits[0] = mask; 79d201fe46SDaniel Eischen n = _sigprocmask(SIG_SETMASK, &set, &oset); 80e25ad0cbSMarcel Moolenaar if (n) 81e25ad0cbSMarcel Moolenaar return (n); 823cf3c5d9SMarcel Moolenaar return (oset.__bits[0]); 8358f0484fSRodney W. Grimes } 8458f0484fSRodney W. Grimes 8551295a4dSJordan K. Hubbard int 8658f0484fSRodney W. Grimes sigblock(mask) 8758f0484fSRodney W. Grimes int mask; 8858f0484fSRodney W. Grimes { 893cf3c5d9SMarcel Moolenaar sigset_t set, oset; 90e25ad0cbSMarcel Moolenaar int n; 9158f0484fSRodney W. Grimes 923cf3c5d9SMarcel Moolenaar sigemptyset(&set); 933cf3c5d9SMarcel Moolenaar set.__bits[0] = mask; 94d201fe46SDaniel Eischen n = _sigprocmask(SIG_BLOCK, &set, &oset); 95e25ad0cbSMarcel Moolenaar if (n) 96e25ad0cbSMarcel Moolenaar return (n); 973cf3c5d9SMarcel Moolenaar return (oset.__bits[0]); 9858f0484fSRodney W. Grimes } 9958f0484fSRodney W. Grimes 10051295a4dSJordan K. Hubbard int 1019a6ceaceSKonstantin Belousov sigpause(int mask) 10258f0484fSRodney W. Grimes { 1033cf3c5d9SMarcel Moolenaar sigset_t set; 1043cf3c5d9SMarcel Moolenaar 1053cf3c5d9SMarcel Moolenaar sigemptyset(&set); 1063cf3c5d9SMarcel Moolenaar set.__bits[0] = mask; 1079233c4d9SJason Evans return (_sigsuspend(&set)); 10858f0484fSRodney W. Grimes } 1099a6ceaceSKonstantin Belousov 1109a6ceaceSKonstantin Belousov int 1119a6ceaceSKonstantin Belousov xsi_sigpause(int sig) 1129a6ceaceSKonstantin Belousov { 1139a6ceaceSKonstantin Belousov sigset_t set; 1149a6ceaceSKonstantin Belousov 1159a6ceaceSKonstantin Belousov sigemptyset(&set); 1169a6ceaceSKonstantin Belousov sigaddset(&set, sig); 1179a6ceaceSKonstantin Belousov return (_sigsuspend(&set)); 1189a6ceaceSKonstantin Belousov } 1199a6ceaceSKonstantin Belousov 1209a6ceaceSKonstantin Belousov int 1219a6ceaceSKonstantin Belousov sighold(int sig) 1229a6ceaceSKonstantin Belousov { 1239a6ceaceSKonstantin Belousov sigset_t set; 1249a6ceaceSKonstantin Belousov 1259a6ceaceSKonstantin Belousov sigemptyset(&set); 1269a6ceaceSKonstantin Belousov sigaddset(&set, sig); 1279a6ceaceSKonstantin Belousov return (_sigprocmask(SIG_BLOCK, &set, NULL)); 1289a6ceaceSKonstantin Belousov } 1299a6ceaceSKonstantin Belousov 1309a6ceaceSKonstantin Belousov int 1319a6ceaceSKonstantin Belousov sigignore(int sig) 1329a6ceaceSKonstantin Belousov { 1339a6ceaceSKonstantin Belousov struct sigaction sa; 1349a6ceaceSKonstantin Belousov 1359a6ceaceSKonstantin Belousov bzero(&sa, sizeof(sa)); 1369a6ceaceSKonstantin Belousov sa.sa_handler = SIG_IGN; 1379a6ceaceSKonstantin Belousov return (_sigaction(sig, &sa, NULL)); 1389a6ceaceSKonstantin Belousov } 1399a6ceaceSKonstantin Belousov 1409a6ceaceSKonstantin Belousov int 1419a6ceaceSKonstantin Belousov sigrelse(int sig) 1429a6ceaceSKonstantin Belousov { 1439a6ceaceSKonstantin Belousov sigset_t set; 1449a6ceaceSKonstantin Belousov 1459a6ceaceSKonstantin Belousov sigemptyset(&set); 1469a6ceaceSKonstantin Belousov sigaddset(&set, sig); 1479a6ceaceSKonstantin Belousov return (_sigprocmask(SIG_UNBLOCK, &set, NULL)); 1489a6ceaceSKonstantin Belousov } 1499a6ceaceSKonstantin Belousov 1509a6ceaceSKonstantin Belousov void 1519a6ceaceSKonstantin Belousov (*sigset(int sig, void (*disp)(int)))(int) 1529a6ceaceSKonstantin Belousov { 1539a6ceaceSKonstantin Belousov sigset_t set, pset; 1549a6ceaceSKonstantin Belousov struct sigaction sa, psa; 1559a6ceaceSKonstantin Belousov int error; 1569a6ceaceSKonstantin Belousov 1579a6ceaceSKonstantin Belousov sigemptyset(&set); 1589a6ceaceSKonstantin Belousov sigaddset(&set, sig); 1599a6ceaceSKonstantin Belousov error = _sigprocmask(SIG_BLOCK, NULL, &pset); 1609a6ceaceSKonstantin Belousov if (error == -1) 1619a6ceaceSKonstantin Belousov return (SIG_ERR); 1629a6ceaceSKonstantin Belousov if ((__sighandler_t *)disp == SIG_HOLD) { 1639a6ceaceSKonstantin Belousov error = _sigprocmask(SIG_BLOCK, &set, &pset); 1649a6ceaceSKonstantin Belousov if (error == -1) 1659a6ceaceSKonstantin Belousov return (SIG_ERR); 1669a6ceaceSKonstantin Belousov if (sigismember(&pset, sig)) 1679a6ceaceSKonstantin Belousov return (SIG_HOLD); 1689a6ceaceSKonstantin Belousov else { 1699a6ceaceSKonstantin Belousov error = _sigaction(sig, NULL, &psa); 1709a6ceaceSKonstantin Belousov if (error == -1) 1719a6ceaceSKonstantin Belousov return (SIG_ERR); 1729a6ceaceSKonstantin Belousov return (psa.sa_handler); 1739a6ceaceSKonstantin Belousov } 1749a6ceaceSKonstantin Belousov } else { 1759a6ceaceSKonstantin Belousov error = _sigprocmask(SIG_UNBLOCK, &set, &pset); 1769a6ceaceSKonstantin Belousov if (error == -1) 1779a6ceaceSKonstantin Belousov return (SIG_ERR); 1789a6ceaceSKonstantin Belousov } 1799a6ceaceSKonstantin Belousov 1809a6ceaceSKonstantin Belousov bzero(&sa, sizeof(sa)); 1819a6ceaceSKonstantin Belousov sa.sa_handler = disp; 1829a6ceaceSKonstantin Belousov error = _sigaction(sig, &sa, &psa); 1839a6ceaceSKonstantin Belousov if (error == -1) 1849a6ceaceSKonstantin Belousov return (SIG_ERR); 1859a6ceaceSKonstantin Belousov if (sigismember(&pset, sig)) 1869a6ceaceSKonstantin Belousov return (SIG_HOLD); 1879a6ceaceSKonstantin Belousov else 1889a6ceaceSKonstantin Belousov return (psa.sa_handler); 1899a6ceaceSKonstantin Belousov } 190