xref: /freebsd/share/examples/ses/srcs/sesd.c (revision 7aa383846770374466b1dcb2cefd71bde9acf463)
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(int a, char **v)
53 {
54 	static const char *usage =
55 	    "usage: %s [ -d ] [ -t pollinterval ] device [ device ]\n";
56 	int fd, polltime, dev, devbase, nodaemon;
57 	ses_encstat stat, *carray;
58 
59 	if (a < 2) {
60 		fprintf(stderr, usage, *v);
61 		return (1);
62 	}
63 
64 	devbase = 1;
65 
66 	if (strcmp(v[1], "-d") == 0) {
67 		nodaemon = 1;
68 		devbase++;
69 	} else {
70 		nodaemon = 0;
71 	}
72 
73 	if (a > 2 && strcmp(v[2], "-t") == 0) {
74 		devbase += 2;
75 		polltime = atoi(v[3]);
76 	} else {
77 		polltime = 30;
78 	}
79 
80 	carray = malloc(a);
81 	if (carray == NULL) {
82 		perror("malloc");
83 		return (1);
84 	}
85 	for (dev = devbase; dev < a; dev++)
86 		carray[dev] = (ses_encstat) -1;
87 
88 	/*
89 	 * Check to make sure we can open all devices
90 	 */
91 	for (dev = devbase; dev < a; dev++) {
92 		fd = open(v[dev], O_RDWR);
93 		if (fd < 0) {
94 			perror(v[dev]);
95 			return (1);
96 		}
97 		if (ioctl(fd, SESIOC_INIT, NULL) < 0) {
98 			fprintf(stderr, "%s: SESIOC_INIT fails- %s\n",
99 			    v[dev], strerror(errno));
100 			return (1);
101 		}
102 		(void) close(fd);
103 	}
104 	if (nodaemon == 0) {
105 		if (daemon(0, 0) < 0) {
106 			perror("daemon");
107 			return (1);
108 		}
109 		openlog("sesd", LOG_CONS, LOG_USER);
110 	} else {
111 		openlog("sesd", LOG_CONS|LOG_PERROR, LOG_USER);
112 	}
113 
114 	for (;;) {
115 		for (dev = devbase; dev < a; dev++) {
116 			fd = open(v[dev], O_RDWR);
117 			if (fd < 0) {
118 				syslog(LOG_ERR, "%s: %m", v[dev]);
119 				continue;
120 			}
121 
122 			/*
123 			 * Get the actual current enclosure status.
124 			 */
125 			if (ioctl(fd, SESIOC_GETENCSTAT, (caddr_t) &stat) < 0) {
126 				syslog(LOG_ERR,
127 				    "%s: SESIOC_GETENCSTAT- %m", v[dev]);
128 				(void) close(fd);
129 				continue;
130 			}
131 			(void) close(fd);
132 
133 			if (stat == carray[dev])
134 				continue;
135 
136 			carray[dev] = stat;
137 			if ((stat & ALLSTAT) == 0) {
138 				syslog(LOG_NOTICE,
139 				    "%s: Enclosure Status OK", v[dev]);
140 			}
141 			if (stat & SES_ENCSTAT_INFO) {
142 				syslog(LOG_INFO,
143 				    "%s: Enclosure Status Has Information",
144 				    v[dev]);
145 			}
146 			if (stat & SES_ENCSTAT_NONCRITICAL) {
147 				syslog(LOG_WARNING,
148 				    "%s: Enclosure Non-Critical", v[dev]);
149 			}
150 			if (stat & SES_ENCSTAT_CRITICAL) {
151 				syslog(LOG_CRIT,
152 				    "%s: Enclosure Critical", v[dev]);
153 			}
154 			if (stat & SES_ENCSTAT_UNRECOV) {
155 				syslog(LOG_ALERT,
156 				    "%s: Enclosure Unrecoverable", v[dev]);
157 			}
158 		}
159 		sleep(polltime);
160 	}
161 	/* NOTREACHED */
162 }
163