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"