1 /* $OpenBSD: sigaction.c,v 1.4 2001/01/22 18:01:48 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998,2000 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 <curses.priv.h> 37 38 #include <signal.h> 39 #include <SigAction.h> 40 41 /* This file provides sigaction() emulation using sigvec() */ 42 /* Use only if this is non POSIX system */ 43 44 #if !HAVE_SIGACTION && HAVE_SIGVEC 45 46 MODULE_ID("$From: sigaction.c,v 1.11 2000/12/10 02:43:28 tom Exp $") 47 48 NCURSES_EXPORT(int) 49 sigaction 50 (int sig, sigaction_t * sigact, sigaction_t * osigact) 51 { 52 return sigvec(sig, sigact, osigact); 53 } 54 55 NCURSES_EXPORT(int) 56 sigemptyset 57 (sigset_t * mask) 58 { 59 *mask = 0; 60 return 0; 61 } 62 63 NCURSES_EXPORT(int) 64 sigprocmask 65 (int mode, sigset_t * mask, sigset_t * omask) 66 { 67 sigset_t current = sigsetmask(0); 68 69 if (omask) 70 *omask = current; 71 72 if (mode == SIG_BLOCK) 73 current |= *mask; 74 else if (mode == SIG_UNBLOCK) 75 current &= ~*mask; 76 else if (mode == SIG_SETMASK) 77 current = *mask; 78 79 sigsetmask(current); 80 return 0; 81 } 82 83 NCURSES_EXPORT(int) 84 sigsuspend(sigset_t * mask) 85 { 86 return sigpause(*mask); 87 } 88 89 NCURSES_EXPORT(int) 90 sigdelset 91 (sigset_t * mask, int sig) 92 { 93 *mask &= ~sigmask(sig); 94 return 0; 95 } 96 97 NCURSES_EXPORT(int) 98 sigaddset 99 (sigset_t * mask, int sig) 100 { 101 *mask |= sigmask(sig); 102 return 0; 103 } 104 105 NCURSES_EXPORT(int) 106 sigismember 107 (sigset_t * mask, int sig) 108 { 109 return (*mask & sigmask(sig)) != 0; 110 } 111 112 #else 113 extern 114 NCURSES_EXPORT(void) 115 _nc_sigaction(void); /* quiet's gcc warning */ 116 NCURSES_EXPORT(void) 117 _nc_sigaction(void) 118 { 119 } /* nonempty for strict ANSI compilers */ 120 #endif 121