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ras3.c revision 1.4 
      1 /* $NetBSD: ras3.c,v 1.4 2004/01/07 19:42:22 martin Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by the NetBSD
     18  *      Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 #include <stdio.h>
     37 #include <signal.h>
     38 #include <unistd.h>
     39 #include <sys/ras.h>
     40 #include <sys/time.h>
     41 #include <sys/wait.h>
     42 
     43 #define COUNT	10
     44 
     45 __volatile int handled = 0;
     46 __volatile int count = 0;
     47 struct itimerval itv;
     48 
     49 void handler(int);
     50 
     51 void
     52 handler(int sig)
     53 {
     54 
     55 	handled++;
     56 }
     57 
     58 int
     59 main(int argc, char *argv[])
     60 {
     61 	int rv;
     62 	char *const args[] = { argv[0], "1", NULL };
     63 
     64 #ifndef	__HAVE_RAS
     65 	printf("RAS is not supported on this architecture\n");
     66 	return 0;
     67 #endif
     68 
     69         signal(SIGVTALRM, handler);
     70 
     71         itv.it_interval.tv_sec = 0;
     72         itv.it_interval.tv_usec = 0;
     73         itv.it_value.tv_sec = 10;
     74         itv.it_value.tv_usec = 0;
     75         setitimer(ITIMER_VIRTUAL, &itv, NULL);
     76 
     77 	if (argc != 2) {
     78 		if (rasctl((caddr_t)&&start, (caddr_t)&&end - (caddr_t)&&start,
     79 		    RAS_INSTALL) < 0)
     80 			return (1);
     81 		if (fork() != 0) {
     82 			wait(&rv);
     83 			return (rv == 0);
     84 		}
     85 		if (execvp(argv[0],args) < 0) {
     86 			printf("exec failed\n");
     87 			return (0);
     88 		}
     89 	}
     90 
     91 	__insn_barrier();
     92 start:
     93 	count++;
     94 	if (count > COUNT)
     95 		goto end;
     96 
     97 	while (!handled) {
     98 		continue;
     99 	}
    100 end:
    101 	__insn_barrier();
    102 
    103 	return (handled != 0);
    104 }
    105