/share/examples/ses/srcs/sesd.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 <stddef.h>
 36#include <stdint.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 <cam/scsi/scsi_all.h>
 45#include <cam/scsi/scsi_enc.h>
 46
 47#define	ALLSTAT (SES_ENCSTAT_UNRECOV | SES_ENCSTAT_CRITICAL | \
 48	SES_ENCSTAT_NONCRITICAL | SES_ENCSTAT_INFO)
 49
 50/*
 51 * Monitor named SES devices and note (via syslog) any changes in status.
 52 */
 53
 54int
 55main(int a, char **v)
 56{
 57	static const char *usage =
 58	    "usage: %s [ -d ] [ -t pollinterval ] device [ device ]\n";
 59	int fd, polltime, dev, devbase, nodaemon;
 60	encioc_enc_status_t stat, *carray;
 61
 62	if (a < 2) {
 63		fprintf(stderr, usage, *v);
 64		return (1);
 65	}
 66
 67	devbase = 1;
 68
 69	if (strcmp(v[1], "-d") == 0) {
 70		nodaemon = 1;
 71		devbase++;
 72	} else {
 73		nodaemon = 0;
 74	}
 75
 76	if (a > 2 && strcmp(v[2], "-t") == 0) {
 77		devbase += 2;
 78		polltime = atoi(v[3]);
 79	} else {
 80		polltime = 30;
 81	}
 82
 83	carray = malloc(a);
 84	if (carray == NULL) {
 85		perror("malloc");
 86		return (1);
 87	}
 88	for (dev = devbase; dev < a; dev++)
 89		carray[dev] = (encioc_enc_status_t) -1;
 90
 91	/*
 92	 * Check to make sure we can open all devices
 93	 */
 94	for (dev = devbase; dev < a; dev++) {
 95		fd = open(v[dev], O_RDWR);
 96		if (fd < 0) {
 97			perror(v[dev]);
 98			return (1);
 99		}
100		if (ioctl(fd, ENCIOC_INIT, NULL) < 0) {
101			fprintf(stderr, "%s: ENCIOC_INIT fails- %s\n",
102			    v[dev], strerror(errno));
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", LOG_CONS, LOG_USER);
113	} else {
114		openlog("sesd", LOG_CONS|LOG_PERROR, LOG_USER);
115	}
116
117	for (;;) {
118		for (dev = devbase; 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, ENCIOC_GETENCSTAT, (caddr_t) &stat) < 0) {
129				syslog(LOG_ERR,
130				    "%s: ENCIOC_GETENCSTAT- %m", v[dev]);
131				(void) close(fd);
132				continue;
133			}
134			(void) close(fd);
135
136			if (stat == carray[dev])
137				continue;
138
139			carray[dev] = stat;
140			if ((stat & ALLSTAT) == 0) {
141				syslog(LOG_NOTICE,
142				    "%s: Enclosure Status OK", v[dev]);
143			}
144			if (stat & SES_ENCSTAT_INFO) {
145				syslog(LOG_INFO,
146				    "%s: Enclosure Status Has Information",
147				    v[dev]);
148			}
149			if (stat & SES_ENCSTAT_NONCRITICAL) {
150				syslog(LOG_WARNING,
151				    "%s: Enclosure Non-Critical", v[dev]);
152			}
153			if (stat & SES_ENCSTAT_CRITICAL) {
154				syslog(LOG_CRIT,
155				    "%s: Enclosure Critical", v[dev]);
156			}
157			if (stat & SES_ENCSTAT_UNRECOV) {
158				syslog(LOG_ALERT,
159				    "%s: Enclosure Unrecoverable", v[dev]);
160			}
161		}
162		sleep(polltime);
163	}
164	/* NOTREACHED */
165}