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. 13fbbd9655SWarner Losh * 3. 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> 385ebe9664SKonstantin Belousov #include <errno.h> 3958f0484fSRodney W. Grimes #include <signal.h> 409a6ceaceSKonstantin Belousov #include <string.h> 41d201fe46SDaniel Eischen #include "un-namespace.h" 42d201fe46SDaniel Eischen #include "libc_private.h" 4358f0484fSRodney W. Grimes 4451295a4dSJordan K. Hubbard int 455e939c7dSCraig Rodrigues sigvec(int signo, struct sigvec *sv, struct sigvec *osv) 4658f0484fSRodney W. Grimes { 472bc2b292SJohn Polstra struct sigaction sa, osa; 482bc2b292SJohn Polstra struct sigaction *sap, *osap; 4958f0484fSRodney W. Grimes int ret; 5058f0484fSRodney W. Grimes 512bc2b292SJohn Polstra if (sv != NULL) { 522bc2b292SJohn Polstra sa.sa_handler = sv->sv_handler; 532bc2b292SJohn Polstra sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT; 542bc2b292SJohn Polstra sigemptyset(&sa.sa_mask); 552bc2b292SJohn Polstra sa.sa_mask.__bits[0] = sv->sv_mask; 562bc2b292SJohn Polstra sap = &sa; 572bc2b292SJohn Polstra } else 582bc2b292SJohn Polstra sap = NULL; 592bc2b292SJohn Polstra osap = osv != NULL ? &osa : NULL; 60bd6060a1SKonstantin Belousov ret = __libc_sigaction(signo, sap, osap); 612bc2b292SJohn Polstra if (ret == 0 && osv != NULL) { 622bc2b292SJohn Polstra osv->sv_handler = osa.sa_handler; 632bc2b292SJohn Polstra osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT; 642bc2b292SJohn Polstra osv->sv_mask = osa.sa_mask.__bits[0]; 652bc2b292SJohn Polstra } 6658f0484fSRodney W. Grimes return (ret); 6758f0484fSRodney W. Grimes } 6858f0484fSRodney W. Grimes 6951295a4dSJordan K. Hubbard int 705e939c7dSCraig Rodrigues sigsetmask(int mask) 7158f0484fSRodney W. Grimes { 723cf3c5d9SMarcel Moolenaar sigset_t set, oset; 73e25ad0cbSMarcel Moolenaar int n; 7458f0484fSRodney W. Grimes 753cf3c5d9SMarcel Moolenaar sigemptyset(&set); 763cf3c5d9SMarcel Moolenaar set.__bits[0] = mask; 77bd6060a1SKonstantin Belousov n = __libc_sigprocmask(SIG_SETMASK, &set, &oset); 78e25ad0cbSMarcel Moolenaar if (n) 79e25ad0cbSMarcel Moolenaar return (n); 803cf3c5d9SMarcel Moolenaar return (oset.__bits[0]); 8158f0484fSRodney W. Grimes } 8258f0484fSRodney W. Grimes 8351295a4dSJordan K. Hubbard int 845e939c7dSCraig Rodrigues sigblock(int mask) 8558f0484fSRodney W. Grimes { 863cf3c5d9SMarcel Moolenaar sigset_t set, oset; 87e25ad0cbSMarcel Moolenaar int n; 8858f0484fSRodney W. Grimes 893cf3c5d9SMarcel Moolenaar sigemptyset(&set); 903cf3c5d9SMarcel Moolenaar set.__bits[0] = mask; 91bd6060a1SKonstantin Belousov n = __libc_sigprocmask(SIG_BLOCK, &set, &oset); 92e25ad0cbSMarcel Moolenaar if (n) 93e25ad0cbSMarcel Moolenaar return (n); 943cf3c5d9SMarcel Moolenaar return (oset.__bits[0]); 9558f0484fSRodney W. Grimes } 9658f0484fSRodney W. Grimes 9751295a4dSJordan K. Hubbard int 989a6ceaceSKonstantin Belousov sigpause(int mask) 9958f0484fSRodney W. Grimes { 1003cf3c5d9SMarcel Moolenaar sigset_t set; 1013cf3c5d9SMarcel Moolenaar 1023cf3c5d9SMarcel Moolenaar sigemptyset(&set); 1033cf3c5d9SMarcel Moolenaar set.__bits[0] = mask; 104bd6060a1SKonstantin Belousov return (__libc_sigsuspend(&set)); 10558f0484fSRodney W. Grimes } 1069a6ceaceSKonstantin Belousov 1079a6ceaceSKonstantin Belousov int 1089a6ceaceSKonstantin Belousov xsi_sigpause(int sig) 1099a6ceaceSKonstantin Belousov { 1109a6ceaceSKonstantin Belousov sigset_t set; 1119a6ceaceSKonstantin Belousov 112bd6060a1SKonstantin Belousov if (__libc_sigprocmask(SIG_BLOCK, NULL, &set) == -1) 1135ebe9664SKonstantin Belousov return (-1); 114e2b801ddSKonstantin Belousov if (sigdelset(&set, sig) == -1) 115e2b801ddSKonstantin Belousov return (-1); 116bd6060a1SKonstantin Belousov return (__libc_sigsuspend(&set)); 1179a6ceaceSKonstantin Belousov } 1189a6ceaceSKonstantin Belousov 1199a6ceaceSKonstantin Belousov int 1209a6ceaceSKonstantin Belousov sighold(int sig) 1219a6ceaceSKonstantin Belousov { 1229a6ceaceSKonstantin Belousov sigset_t set; 1239a6ceaceSKonstantin Belousov 1249a6ceaceSKonstantin Belousov sigemptyset(&set); 125e2b801ddSKonstantin Belousov if (sigaddset(&set, sig) == -1) 126e2b801ddSKonstantin Belousov return (-1); 127bd6060a1SKonstantin Belousov return (__libc_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; 137bd6060a1SKonstantin Belousov return (__libc_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); 146e2b801ddSKonstantin Belousov if (sigaddset(&set, sig) == -1) 147e2b801ddSKonstantin Belousov return (-1); 148bd6060a1SKonstantin Belousov return (__libc_sigprocmask(SIG_UNBLOCK, &set, NULL)); 1499a6ceaceSKonstantin Belousov } 1509a6ceaceSKonstantin Belousov 1519a6ceaceSKonstantin Belousov void 1529a6ceaceSKonstantin Belousov (*sigset(int sig, void (*disp)(int)))(int) 1539a6ceaceSKonstantin Belousov { 1549a6ceaceSKonstantin Belousov sigset_t set, pset; 1559a6ceaceSKonstantin Belousov struct sigaction sa, psa; 1569a6ceaceSKonstantin Belousov 1579a6ceaceSKonstantin Belousov sigemptyset(&set); 158e2b801ddSKonstantin Belousov if (sigaddset(&set, sig) == -1) 159e2b801ddSKonstantin Belousov return (SIG_ERR); 160bd6060a1SKonstantin Belousov if (__libc_sigprocmask(SIG_BLOCK, NULL, &pset) == -1) 1619a6ceaceSKonstantin Belousov return (SIG_ERR); 1629a6ceaceSKonstantin Belousov if ((__sighandler_t *)disp == SIG_HOLD) { 163bd6060a1SKonstantin Belousov if (__libc_sigprocmask(SIG_BLOCK, &set, &pset) == -1) 1649a6ceaceSKonstantin Belousov return (SIG_ERR); 1659a6ceaceSKonstantin Belousov if (sigismember(&pset, sig)) 1669a6ceaceSKonstantin Belousov return (SIG_HOLD); 1679a6ceaceSKonstantin Belousov else { 168bd6060a1SKonstantin Belousov if (__libc_sigaction(sig, NULL, &psa) == -1) 1699a6ceaceSKonstantin Belousov return (SIG_ERR); 1709a6ceaceSKonstantin Belousov return (psa.sa_handler); 1719a6ceaceSKonstantin Belousov } 1729a6ceaceSKonstantin Belousov } else { 173bd6060a1SKonstantin Belousov if (__libc_sigprocmask(SIG_UNBLOCK, &set, &pset) == -1) 1749a6ceaceSKonstantin Belousov return (SIG_ERR); 1759a6ceaceSKonstantin Belousov } 1769a6ceaceSKonstantin Belousov 1779a6ceaceSKonstantin Belousov bzero(&sa, sizeof(sa)); 1789a6ceaceSKonstantin Belousov sa.sa_handler = disp; 179bd6060a1SKonstantin Belousov if (__libc_sigaction(sig, &sa, &psa) == -1) 1809a6ceaceSKonstantin Belousov return (SIG_ERR); 1819a6ceaceSKonstantin Belousov if (sigismember(&pset, sig)) 1829a6ceaceSKonstantin Belousov return (SIG_HOLD); 1839a6ceaceSKonstantin Belousov else 1849a6ceaceSKonstantin Belousov return (psa.sa_handler); 1859a6ceaceSKonstantin Belousov } 186