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@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
53int
54main(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