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      1 /* $NetBSD: chpmon.c,v 1.3 2018/01/23 21:06:26 sevan Exp $ */
      2 /* $FreeBSD: src/share/examples/ses/chpmon.c,v 1.1 2000/01/15 22:47:16 mjacob Exp $ */
      3 /*
      4  * Copyright (c) 2000 by Matthew Jacob
      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  *    without modification, immediately at the beginning of the file.
     13  * 2. The name of the author may not be used to endorse or promote products
     14  *    derived from this software without specific prior written permission.
     15  *
     16  * Alternatively, this software may be distributed under the terms of the
     17  * the GNU Public License ("GPL").
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  * Matthew Jacob
     32  * Feral Software
     33  * mjacob (at) feral.com
     34  */
     35 #include <unistd.h>
     36 #include <stdlib.h>
     37 #include <stdio.h>
     38 #include <fcntl.h>
     39 #include <errno.h>
     40 #include <sys/ioctl.h>
     41 #include "ses.h"
     42 
     43 /*
     44  * Continuously monitor all named SES devices
     45  * and turn all but INFO enclosure status
     46  * values into CRITICAL enclosure status.
     47  */
     48 #define	BADSTAT	\
     49 	(SES_ENCSTAT_UNRECOV|SES_ENCSTAT_CRITICAL|SES_ENCSTAT_NONCRITICAL)
     50 
     51 int
     52 main(int a, char *v[])
     53 {
     54 	int fd, delay, dev;
     55 	ses_encstat stat, *carray;
     56 
     57 	if (a < 3) {
     58 		fprintf(stderr, "usage: %s polling-interval device "
     59 		    "[ device ... ]\n", *v);
     60 		return (1);
     61 	}
     62 	delay = atoi(v[1]);
     63 	carray = malloc(a);
     64 	if (carray == NULL) {
     65 		perror("malloc");
     66 		return (1);
     67 	}
     68 	bzero((void *)carray, a);
     69 
     70 	for (;;) {
     71 		for (dev = 2; dev < a; dev++) {
     72 			fd = open(v[dev], O_RDWR);
     73 			if (fd < 0) {
     74 				perror(v[dev]);
     75 				continue;
     76 			}
     77 			/*
     78 			 * First clear any enclosure status, in case it is
     79 			 * a latched status.
     80 			 */
     81 			stat = 0;
     82 			if (ioctl(fd, SESIOC_SETENCSTAT, (caddr_t) &stat) < 0) {
     83 				fprintf(stderr, "%s: SESIOC_SETENCSTAT1: %s\n",
     84 				    v[dev], strerror(errno));
     85 				(void) close(fd);
     86 				continue;
     87 			}
     88 			/*
     89 			 * Now get the actual current enclosure status.
     90 			 */
     91 			if (ioctl(fd, SESIOC_GETENCSTAT, (caddr_t) &stat) < 0) {
     92 				fprintf(stderr, "%s: SESIOC_GETENCSTAT: %s\n",
     93 				    v[dev], strerror(errno));
     94 				(void) close(fd);
     95 				continue;
     96 			}
     97 
     98 			if ((stat & BADSTAT) == 0) {
     99 				if (carray[dev]) {
    100 					fprintf(stdout, "%s: Clearing CRITICAL "
    101 					    "condition\n", v[dev]);
    102 					carray[dev] = 0;
    103 				}
    104 				(void) close(fd);
    105 				continue;
    106 			}
    107 			carray[dev] = 1;
    108 			fprintf(stdout, "%s: Setting CRITICAL from:", v[dev]);
    109 			if (stat & SES_ENCSTAT_UNRECOV)
    110 				fprintf(stdout, " UNRECOVERABLE");
    111 
    112 			if (stat & SES_ENCSTAT_CRITICAL)
    113 				fprintf(stdout, " CRITICAL");
    114 
    115 			if (stat & SES_ENCSTAT_NONCRITICAL)
    116 				fprintf(stdout, " NONCRITICAL");
    117 			putchar('\n');
    118 			stat = SES_ENCSTAT_CRITICAL;
    119 			if (ioctl(fd, SESIOC_SETENCSTAT, (caddr_t) &stat) < 0) {
    120 				fprintf(stderr, "%s: SESIOC_SETENCSTAT 2: %s\n",
    121 				    v[dev], strerror(errno));
    122 			}
    123 			(void) close(fd);
    124 		}
    125 		sleep(delay);
    126 	}
    127 	/* NOTREACHED */
    128 }
    129