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      1 /* $NetBSD: sesd.c,v 1.9 2018/01/23 21:06:26 sevan Exp $ */
      2 /* $FreeBSD: $ */
      3 /* $OpenBSD: $ */
      4 /*
      5  * Copyright (c) 2000 by Matthew Jacob
      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  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions, and the following disclaimer,
     13  *    without modification, immediately at the beginning of the file.
     14  * 2. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * Alternatively, this software may be distributed under the terms of the
     18  * the GNU Public License ("GPL").
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  *
     32  * Matthew Jacob
     33  * Feral Software
     34  * mjacob (at) feral.com
     35  */
     36 #include <unistd.h>
     37 #include <stdlib.h>
     38 #include <stdio.h>
     39 #include <fcntl.h>
     40 #include <errno.h>
     41 #include <string.h>
     42 #include <syslog.h>
     43 #include <sys/ioctl.h>
     44 #include SESINC
     45 
     46 #define	ALLSTAT (SES_ENCSTAT_UNRECOV | SES_ENCSTAT_CRITICAL | \
     47 	SES_ENCSTAT_NONCRITICAL | SES_ENCSTAT_INFO)
     48 
     49 /*
     50  * Monitor named SES devices and note (via syslog) any changes in status.
     51  */
     52 
     53 int
     54 main(int a, char *v[])
     55 {
     56 	static const char usage[] =
     57 	    "usage: %s [-d] [-t pollinterval] device [device ...]\n";
     58 	int c, fd, polltime, dev, nodaemon;
     59 	ses_encstat sestat, *carray;
     60 
     61 	if (a < 2) {
     62 		fprintf(stderr, usage, *v);
     63 		return (1);
     64 	}
     65 
     66 	nodaemon = 0;
     67 	polltime = 30;
     68 	while ((c = getopt(a, v, "dt:")) != -1) {
     69 		switch (c) {
     70 		case 'd':
     71 			nodaemon = 1;
     72 			break;
     73 		case 't':
     74 			polltime = atoi(optarg);
     75 			break;
     76 		default:
     77 			fprintf(stderr, usage, *v);
     78 			return (1);
     79 		}
     80 	}
     81 
     82 	carray = malloc(a);
     83 	if (carray == NULL) {
     84 		perror("malloc");
     85 		return (1);
     86 	}
     87 	for (dev = optind; dev < a; dev++)
     88 		carray[dev] = (ses_encstat) -1;
     89 
     90 	/*
     91 	 * Check to make sure we can open all devices
     92 	 */
     93 	for (dev = optind; dev < a; dev++) {
     94 		fd = open(v[dev], O_RDWR);
     95 		if (fd < 0) {
     96 			perror(v[dev]);
     97 			return (1);
     98 		}
     99 		if (ioctl(fd, SESIOC_INIT, NULL) < 0) {
    100 			fprintf(stderr, "%s: SESIOC_INIT fails- %s\n",
    101 			    v[dev], strerror(errno));
    102 			(void) close(fd);
    103 			return (1);
    104 		}
    105 		(void) close(fd);
    106 	}
    107 	if (nodaemon == 0) {
    108 		if (daemon(0, 0) < 0) {
    109 			perror("daemon");
    110 			return (1);
    111 		}
    112 		openlog("sesd", 0, LOG_USER);
    113 	} else {
    114 		openlog("sesd", LOG_PERROR, LOG_USER);
    115 	}
    116 
    117 	for (;;) {
    118 		for (dev = optind; dev < a; dev++) {
    119 			fd = open(v[dev], O_RDWR);
    120 			if (fd < 0) {
    121 				syslog(LOG_ERR, "%s: %m", v[dev]);
    122 				continue;
    123 			}
    124 
    125 			/*
    126 			 * Get the actual current enclosure status.
    127 			 */
    128 			if (ioctl(fd, SESIOC_GETENCSTAT, (caddr_t) &sestat) < 0) {
    129 				syslog(LOG_ERR,
    130 				    "%s: SESIOC_GETENCSTAT- %m", v[dev]);
    131 				(void) close(fd);
    132 				continue;
    133 			}
    134 			(void) close(fd);
    135 
    136 			if (sestat == carray[dev])
    137 				continue;
    138 
    139 			carray[dev] = sestat;
    140 			if ((sestat & ALLSTAT) == 0) {
    141 				syslog(LOG_NOTICE,
    142 				    "%s: Enclosure Status OK", v[dev]);
    143 			}
    144 			if (sestat & SES_ENCSTAT_INFO) {
    145 				syslog(LOG_INFO,
    146 				    "%s: Enclosure Status Has Information",
    147 				    v[dev]);
    148 			}
    149 			if (sestat & SES_ENCSTAT_NONCRITICAL) {
    150 				syslog(LOG_WARNING,
    151 				    "%s: Enclosure Non-Critical", v[dev]);
    152 			}
    153 			if (sestat & SES_ENCSTAT_CRITICAL) {
    154 				syslog(LOG_CRIT,
    155 				    "%s: Enclosure Critical", v[dev]);
    156 			}
    157 			if (sestat & SES_ENCSTAT_UNRECOV) {
    158 				syslog(LOG_ALERT,
    159 				    "%s: Enclosure Unrecoverable", v[dev]);
    160 			}
    161 		}
    162 		sleep(polltime);
    163 	}
    164 	/* NOTREACHED */
    165 }
    166