Home | History | Annotate | Line # | Download | only in roken 
      1 /*	$NetBSD: signal.c,v 1.2 2017/01/28 21:31:50 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 - 2000 Kungliga Tekniska Hgskolan
      5  * (Royal Institute of Technology, Stockholm, Sweden).
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  *
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * 3. Neither the name of the Institute nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <config.h>
     37 
     38 #include <signal.h>
     39 #include <krb5/roken.h>
     40 
     41 /*
     42  * We would like to always use this signal but there is a link error
     43  * on NEXTSTEP
     44  */
     45 #if !defined(NeXT) && !defined(__APPLE__)
     46 /*
     47  * Bugs:
     48  *
     49  * Do we need any extra hacks for SIGCLD and/or SIGCHLD?
     50  */
     51 
     52 ROKEN_LIB_FUNCTION SigAction ROKEN_LIB_CALL
     53 signal(int iSig, SigAction pAction)
     54 {
     55     struct sigaction saNew, saOld;
     56 
     57     saNew.sa_handler = pAction;
     58     sigemptyset(&saNew.sa_mask);
     59     saNew.sa_flags = 0;
     60 
     61     if (iSig == SIGALRM)
     62 	{
     63 #ifdef SA_INTERRUPT
     64 	    saNew.sa_flags |= SA_INTERRUPT;
     65 #endif
     66 	}
     67     else
     68 	{
     69 #ifdef SA_RESTART
     70 	    saNew.sa_flags |= SA_RESTART;
     71 #endif
     72 	}
     73 
     74     if (sigaction(iSig, &saNew, &saOld) < 0)
     75 	return(SIG_ERR);
     76 
     77     return(saOld.sa_handler);
     78 }
     79 #endif
     80