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 <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 }