/share/examples/ses/srcs/chpmon.c

  1/* $FreeBSD$ */
  2/*
  3 * Copyright (c) 2000 by Matthew Jacob
  4 * All rights reserved.
  5 *
  6 * Redistribution and use in source and binary forms, with or without
  7 * modification, are permitted provided that the following conditions
  8 * are met:
  9 * 1. Redistributions of source code must retain the above copyright
 10 *    notice, this list of conditions, and the following disclaimer,
 11 *    without modification, immediately at the beginning of the file.
 12 * 2. The name of the author may not be used to endorse or promote products
 13 *    derived from this software without specific prior written permission.
 14 *
 15 * Alternatively, this software may be distributed under the terms of the
 16 * the GNU Public License ("GPL").
 17 *
 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 28 * SUCH DAMAGE.
 29 * 
 30 * Matthew Jacob
 31 * Feral Software
 32 * mjacob@feral.com
 33 */
 34#include <unistd.h>
 35#include <stdlib.h>
 36#include <stdio.h>
 37#include <fcntl.h>
 38#include <errno.h>
 39#include <sys/ioctl.h>
 40#include "ses.h"
 41
 42/*
 43 * Continuously monitor all named SES devices
 44 * and turn all but INFO enclosure status
 45 * values into CRITICAL enclosure status.
 46 */
 47#define	BADSTAT	\
 48	(SES_ENCSTAT_UNRECOV|SES_ENCSTAT_CRITICAL|SES_ENCSTAT_NONCRITICAL)
 49int
 50main(int a, char **v)
 51{
 52	int fd, delay, dev;
 53	ses_encstat stat, *carray;
 54
 55	if (a < 3) {
 56		fprintf(stderr, "usage: %s polling-interval device "
 57		    "[ device ... ]\n", *v);
 58		return (1);
 59	}
 60	delay = atoi(v[1]);
 61	carray = malloc(a);
 62	if (carray == NULL) {
 63		perror("malloc");
 64		return (1);
 65	}
 66	bzero((void *)carray, a);
 67
 68	for (;;) {
 69		for (dev = 2; dev < a; dev++) {
 70			fd = open(v[dev], O_RDWR);
 71			if (fd < 0) {
 72				perror(v[dev]);
 73				continue;
 74			}
 75			/*
 76			 * First clear any enclosure status, in case it is
 77			 * a latched status.
 78			 */
 79			stat = 0;
 80			if (ioctl(fd, SESIOC_SETENCSTAT, (caddr_t) &stat) < 0) {
 81				fprintf(stderr, "%s: SESIOC_SETENCSTAT1: %s\n",
 82				    v[dev], strerror(errno));
 83				(void) close(fd);
 84				continue;
 85			}
 86			/*
 87			 * Now get the actual current enclosure status.
 88			 */
 89			if (ioctl(fd, SESIOC_GETENCSTAT, (caddr_t) &stat) < 0) {
 90				fprintf(stderr, "%s: SESIOC_GETENCSTAT: %s\n",
 91				    v[dev], strerror(errno));
 92				(void) close(fd);
 93				continue;
 94			}
 95
 96			if ((stat & BADSTAT) == 0) {
 97				if (carray[dev]) {
 98					fprintf(stdout, "%s: Clearing CRITICAL "
 99					    "condition\n", v[dev]);
100					carray[dev] = 0;
101				}
102				(void) close(fd);
103				continue;
104			}
105			carray[dev] = 1;
106			fprintf(stdout, "%s: Setting CRITICAL from:", v[dev]);
107			if (stat & SES_ENCSTAT_UNRECOV)
108				fprintf(stdout, " UNRECOVERABLE");
109		
110			if (stat & SES_ENCSTAT_CRITICAL)
111				fprintf(stdout, " CRITICAL");
112		
113			if (stat & SES_ENCSTAT_NONCRITICAL)
114				fprintf(stdout, " NONCRITICAL");
115			putchar('\n');
116			stat = SES_ENCSTAT_CRITICAL;
117			if (ioctl(fd, SESIOC_SETENCSTAT, (caddr_t) &stat) < 0) {
118				fprintf(stderr, "%s: SESIOC_SETENCSTAT 2: %s\n",
119				    v[dev], strerror(errno));
120			}
121			(void) close(fd);
122		}
123		sleep(delay);
124	}
125	/* NOTREACHED */
126}