sesd.c revision 1.8 
1/* $NetBSD: sesd.c,v 1.8 2013/04/07 18:49:35 wiz 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)
48int main __P((int, char **));
49
50/*
51 * Monitor named SES devices and note (via syslog) any changes in status.
52 */
53
54int
55main(a, v)
56	int a;
57	char **v;
58{
59	static const char usage[] =
60	    "usage: %s [-d] [-t pollinterval] device [device ...]\n";
61	int c, fd, polltime, dev, nodaemon;
62	ses_encstat sestat, *carray;
63
64	if (a < 2) {
65		fprintf(stderr, usage, *v);
66		return (1);
67	}
68
69	nodaemon = 0;
70	polltime = 30;
71	while ((c = getopt(a, v, "dt:")) != -1) {
72		switch (c) {
73		case 'd':
74			nodaemon = 1;
75			break;
76		case 't':
77			polltime = atoi(optarg);
78			break;
79		default:
80			fprintf(stderr, usage, *v);
81			return (1);
82		}
83	}
84
85	carray = malloc(a);
86	if (carray == NULL) {
87		perror("malloc");
88		return (1);
89	}
90	for (dev = optind; dev < a; dev++)
91		carray[dev] = (ses_encstat) -1;
92
93	/*
94	 * Check to make sure we can open all devices
95	 */
96	for (dev = optind; dev < a; dev++) {
97		fd = open(v[dev], O_RDWR);
98		if (fd < 0) {
99			perror(v[dev]);
100			return (1);
101		}
102		if (ioctl(fd, SESIOC_INIT, NULL) < 0) {
103			fprintf(stderr, "%s: SESIOC_INIT fails- %s\n",
104			    v[dev], strerror(errno));
105			(void) close(fd);
106			return (1);
107		}
108		(void) close(fd);
109	}
110	if (nodaemon == 0) {
111		if (daemon(0, 0) < 0) {
112			perror("daemon");
113			return (1);
114		}
115		openlog("sesd", 0, LOG_USER);
116	} else {
117		openlog("sesd", LOG_PERROR, LOG_USER);
118	}
119
120	for (;;) {
121		for (dev = optind; dev < a; dev++) {
122			fd = open(v[dev], O_RDWR);
123			if (fd < 0) {
124				syslog(LOG_ERR, "%s: %m", v[dev]);
125				continue;
126			}
127
128			/*
129			 * Get the actual current enclosure status.
130			 */
131			if (ioctl(fd, SESIOC_GETENCSTAT, (caddr_t) &sestat) < 0) {
132				syslog(LOG_ERR,
133				    "%s: SESIOC_GETENCSTAT- %m", v[dev]);
134				(void) close(fd);
135				continue;
136			}
137			(void) close(fd);
138
139			if (sestat == carray[dev])
140				continue;
141
142			carray[dev] = sestat;
143			if ((sestat & ALLSTAT) == 0) {
144				syslog(LOG_NOTICE,
145				    "%s: Enclosure Status OK", v[dev]);
146			}
147			if (sestat & SES_ENCSTAT_INFO) {
148				syslog(LOG_INFO,
149				    "%s: Enclosure Status Has Information",
150				    v[dev]);
151			}
152			if (sestat & SES_ENCSTAT_NONCRITICAL) {
153				syslog(LOG_WARNING,
154				    "%s: Enclosure Non-Critical", v[dev]);
155			}
156			if (sestat & SES_ENCSTAT_CRITICAL) {
157				syslog(LOG_CRIT,
158				    "%s: Enclosure Critical", v[dev]);
159			}
160			if (sestat & SES_ENCSTAT_UNRECOV) {
161				syslog(LOG_ALERT,
162				    "%s: Enclosure Unrecoverable", v[dev]);
163			}
164		}
165		sleep(polltime);
166	}
167	/* NOTREACHED */
168}
169