1 /* $OpenBSD: sigaction.c,v 1.3 1999/06/27 08:14:21 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 ****************************************************************************/ 35 36 #include "includes.h" 37 #include <signal.h> 38 #include "sigact.h" 39 40 /* This file provides sigaction() emulation using sigvec() */ 41 /* Use only if this is non POSIX system */ 42 43 #if !HAVE_SIGACTION && HAVE_SIGVEC 44 45 int 46 sigaction(int sig, struct sigaction *sigact, struct sigaction *osigact) 47 { 48 return sigvec(sig, &(sigact->sv), &(osigact->sv)); 49 } 50 51 int 52 sigemptyset (sigset_t * mask) 53 { 54 *mask = 0; 55 return 0; 56 } 57 58 int 59 sigprocmask (int mode, sigset_t * mask, sigset_t * omask) 60 { 61 sigset_t current = sigsetmask(0); 62 63 if (omask) *omask = current; 64 65 if (mode==SIG_BLOCK) 66 current |= *mask; 67 else if (mode==SIG_UNBLOCK) 68 current &= ~*mask; 69 else if (mode==SIG_SETMASK) 70 current = *mask; 71 72 sigsetmask(current); 73 return 0; 74 } 75 76 int 77 sigsuspend (sigset_t * mask) 78 { 79 return sigpause(*mask); 80 } 81 82 int 83 sigdelset (sigset_t * mask, int sig) 84 { 85 *mask &= ~sigmask(sig); 86 return 0; 87 } 88 89 int 90 sigaddset (sigset_t * mask, int sig) 91 { 92 *mask |= sigmask(sig); 93 return 0; 94 } 95 96 int 97 sigismember (sigset_t * mask, int sig) 98 { 99 return (*mask & sigmask(sig)) != 0; 100 } 101 102 #endif 103 104 #pragma ident "%Z%%M% %I% %E% SMI" 105