xref: /freebsd/share/examples/ses/srcs/sesd.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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 <stdlib.h>
36 #include <stdio.h>
37 #include <fcntl.h>
38 #include <errno.h>
39 #include <string.h>
40 #include <syslog.h>
41 #include <sys/ioctl.h>
42 #include SESINC
43 
44 #define	ALLSTAT (SES_ENCSTAT_UNRECOV | SES_ENCSTAT_CRITICAL | \
45 	SES_ENCSTAT_NONCRITICAL | SES_ENCSTAT_INFO)
46 
47 /*
48  * Monitor named SES devices and note (via syslog) any changes in status.
49  */
50 
51 int
52 main(a, v)
53 	int a;
54 	char **v;
55 {
56 	static char *usage =
57 	    "usage: %s [ -d ] [ -t pollinterval ] device [ device ]\n";
58 	int fd, polltime, dev, devbase, nodaemon, bpri;
59 	ses_encstat stat, *carray;
60 
61 	if (a < 2) {
62 		fprintf(stderr, usage, *v);
63 		return (1);
64 	}
65 
66 	devbase = 1;
67 
68 	if (strcmp(v[1], "-d") == 0) {
69 		nodaemon = 1;
70 		devbase++;
71 	} else {
72 		nodaemon = 0;
73 	}
74 
75 	if (a > 2 && strcmp(v[2], "-t") == 0) {
76 		devbase += 2;
77 		polltime = atoi(v[3]);
78 	} else {
79 		polltime = 30;
80 	}
81 
82 	carray = malloc(a);
83 	if (carray == NULL) {
84 		perror("malloc");
85 		return (1);
86 	}
87 	for (dev = devbase; 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 = devbase; 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 			return (1);
103 		}
104 		(void) close(fd);
105 	}
106 	if (nodaemon == 0) {
107 		if (daemon(0, 0) < 0) {
108 			perror("daemon");
109 			return (1);
110 		}
111 		openlog("sesd", LOG_CONS, LOG_USER);
112 	} else {
113 		openlog("sesd", LOG_CONS|LOG_PERROR, LOG_USER);
114 	}
115 
116 	for (;;) {
117 		for (dev = devbase; dev < a; dev++) {
118 			char buf[128];
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) &stat) < 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 (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 }
166