1 /* $OpenBSD: sigaction.c,v 1.2 1999/03/18 16:46:58 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 <curses.priv.h> 37 38 /* This file provides sigaction() emulation using sigvec() */ 39 /* Use only if this is non POSIX system */ 40 41 #if !HAVE_SIGACTION 42 #include <signal.h> 43 #include <SigAction.h> 44 45 MODULE_ID("$From: sigaction.c,v 1.8 1999/03/18 02:12:04 tom Exp $") 46 47 int 48 sigaction (int sig, sigaction_t * sigact, sigaction_t * osigact) 49 { 50 return sigvec(sig, sigact, osigact); 51 } 52 53 int 54 sigemptyset (sigset_t * mask) 55 { 56 *mask = 0; 57 return 0; 58 } 59 60 int 61 sigprocmask (int mode, sigset_t * mask, sigset_t * omask) 62 { 63 sigset_t current = sigsetmask(0); 64 65 if (omask) *omask = current; 66 67 if (mode==SIG_BLOCK) 68 current |= *mask; 69 else if (mode==SIG_UNBLOCK) 70 current &= ~*mask; 71 else if (mode==SIG_SETMASK) 72 current = *mask; 73 74 sigsetmask(current); 75 return 0; 76 } 77 78 int 79 sigsuspend (sigset_t * mask) 80 { 81 return sigpause (*mask); 82 } 83 84 int 85 sigdelset (sigset_t * mask, int sig) 86 { 87 *mask &= ~sigmask (sig); 88 return 0; 89 } 90 91 int 92 sigaddset (sigset_t * mask, int sig) 93 { 94 *mask |= sigmask (sig); 95 return 0; 96 } 97 98 int 99 sigismember (sigset_t * mask, int sig) 100 { 101 return (*mask & sigmask (sig)) != 0; 102 } 103 #else 104 extern void _nc_sigaction(void); /* quiet's gcc warning */ 105 void _nc_sigaction(void) { } /* nonempty for strict ANSI compilers */ 106 #endif 107