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check_ide_smart.c

/*****************************************************************************
* 
* Nagios check_ide_smart plugin
* ide-smart 1.3 - IDE S.M.A.R.T. checking tool
* 
* License: GPL
* Copyright (C) 1998-1999 Ragnar Hojland Espinosa <ragnar@lightside.dhis.org>
*               1998      Gadi Oxman <gadio@netvision.net.il>
* Copyright (c) 2000 Robert Dale <rdale@digital-mission.com>
* Copyright (c) 2000-2007 Nagios Plugins Development Team
* 
* Description:
* 
* This file contains the check_ide_smart plugin
* 
* This plugin checks a local hard drive with the (Linux specific) SMART
* interface
* 
* 
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* 
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
* 
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
* 
* 
*****************************************************************************/

const char *progname = "check_ide_smart";
const char *copyright = "1998-2007";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
      
#include "common.h"
#include "utils.h"

void print_help (void);
void print_usage (void);

#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/hdreg.h>
#include <linux/types.h>
#include <errno.h>
      
#define NR_ATTRIBUTES   30
      
#ifndef TRUE
#define TRUE 1
#endif      /*  */
      
#define PREFAILURE 2
#define ADVISORY 1
#define OPERATIONAL 0
#define UNKNOWN -1

typedef struct threshold_s
{
      __u8 id;
      __u8 threshold;
      __u8 reserved[10];
}
__attribute__ ((packed)) threshold_t;

typedef struct thresholds_s
{
      __u16 revision;
      threshold_t thresholds[NR_ATTRIBUTES];
      __u8 reserved[18];
      __u8 vendor[131];
      __u8 checksum;
}
__attribute__ ((packed)) thresholds_t;

typedef struct value_s
{
      __u8 id;
      __u16 status;
      __u8 value;
      __u8 vendor[8];
}
__attribute__ ((packed)) value_t;

typedef struct values_s
{
      __u16 revision;
      value_t values[NR_ATTRIBUTES];
      __u8 offline_status;
      __u8 vendor1;
      __u16 offline_timeout;
      __u8 vendor2;
      __u8 offline_capability;
      __u16 smart_capability;
      __u8 reserved[16];
      __u8 vendor[125];
      __u8 checksum;
}
__attribute__ ((packed)) values_t;

struct
{
      __u8 value;
      char *text;
}

offline_status_text[] =
      {
            {0x00, "NeverStarted"},
            {0x02, "Completed"},
            {0x04, "Suspended"},
            {0x05, "Aborted"},
            {0x06, "Failed"},
            {0, 0}
      };

struct
{
      __u8 value;
      char *text;
}

smart_command[] =
      {
            {SMART_ENABLE, "SMART_ENABLE"},
            {SMART_DISABLE, "SMART_DISABLE"},
            {SMART_IMMEDIATE_OFFLINE, "SMART_IMMEDIATE_OFFLINE"},
            {SMART_AUTO_OFFLINE, "SMART_AUTO_OFFLINE"}
      };


/* Index to smart_command table, keep in order */ 
enum SmartCommand 
      { SMART_CMD_ENABLE,
            SMART_CMD_DISABLE,
            SMART_CMD_IMMEDIATE_OFFLINE,
            SMART_CMD_AUTO_OFFLINE 
      };

void print_values (values_t * p, thresholds_t * t);
int smart_cmd_simple (int fd, enum SmartCommand command, __u8 val0, char show_error); 

int
main (int argc, char *argv[]) 
{
      char *device = NULL;
      int command = -1;
      int o, longindex;
      int retval = 0;

      thresholds_t thresholds;
      values_t values;
      int fd;

      /* Parse extra opts if any */
      argv=np_extra_opts (&argc, argv, progname);

      static struct option longopts[] = { 
            {"device", required_argument, 0, 'd'}, 
            {"immediate", no_argument, 0, 'i'}, 
            {"quiet-check", no_argument, 0, 'q'}, 
            {"auto-on", no_argument, 0, '1'}, 
            {"auto-off", no_argument, 0, '0'}, 
            {"nagios", no_argument, 0, 'n'}, 
            {"help", no_argument, 0, 'h'}, 
            {"version", no_argument, 0, 'V'},
            {0, 0, 0, 0}
      };

      setlocale (LC_ALL, "");
      bindtextdomain (PACKAGE, LOCALEDIR);
      textdomain (PACKAGE);

      while (1) {
            
            o = getopt_long (argc, argv, "+d:iq10nhV", longopts, &longindex);

            if (o == -1 || o == EOF || o == 1)
                  break;

            switch (o) {
            case 'd':
                  device = optarg;
                  break;
            case 'q':
                  command = 3;
                  break;
            case 'i':
                  command = 2;
                  break;
            case '1':
                  command = 1;
                  break;
            case '0':
                  command = 0;
                  break;
            case 'n':
                  command = 4;
                  break;
            case 'h':
                  print_help ();
                  return STATE_OK;
            case 'V':
                  print_revision (progname, NP_VERSION);
                  return STATE_OK;
            default:
                  usage5 ();
            }
      }

      if (optind < argc) {
            device = argv[optind];
      }

      if (!device) {
            print_help ();
            return STATE_OK;
      }

      fd = open (device, O_RDONLY);

      if (fd < 0) {
            printf (_("CRITICAL - Couldn't open device %s: %s\n"), device, strerror (errno));
            return STATE_CRITICAL;
      }

      if (smart_cmd_simple (fd, SMART_CMD_ENABLE, 0, TRUE)) {
            printf (_("CRITICAL - SMART_CMD_ENABLE\n"));
            return STATE_CRITICAL;
      }

      switch (command) {
      case 0:
            retval = smart_cmd_simple (fd, SMART_CMD_AUTO_OFFLINE, 0, TRUE);
            break;
      case 1:
            retval = smart_cmd_simple (fd, SMART_CMD_AUTO_OFFLINE, 0xF8, TRUE);
            break;
      case 2:
            retval = smart_cmd_simple (fd, SMART_CMD_IMMEDIATE_OFFLINE, 0, TRUE);
            break;
      case 3:
            smart_read_values (fd, &values);
            smart_read_thresholds (fd, &thresholds);
            retval = values_not_passed (&values, &thresholds);
            break;
      case 4:
            smart_read_values (fd, &values);
            smart_read_thresholds (fd, &thresholds);
            retval = nagios (&values, &thresholds);
            break;
      default:
            smart_read_values (fd, &values);
            smart_read_thresholds (fd, &thresholds);
            print_values (&values, &thresholds);
            break;
      }
      close (fd);
      return retval;
}



char *
get_offline_text (int status) 
{
      int i;
      for (i = 0; offline_status_text[i].text; i++) {
            if (offline_status_text[i].value == status) {
                  return offline_status_text[i].text;
            }
      }
      return "UNKNOW";
}



int
smart_read_values (int fd, values_t * values) 
{
      int e;
      __u8 args[4 + 512];
      args[0] = WIN_SMART;
      args[1] = 0;
      args[2] = SMART_READ_VALUES;
      args[3] = 1;
      if (ioctl (fd, HDIO_DRIVE_CMD, &args)) {
            e = errno;
            printf (_("CRITICAL - SMART_READ_VALUES: %s\n"), strerror (errno));
            return e;
      }
      memcpy (values, args + 4, 512);
      return 0;
}



int
values_not_passed (values_t * p, thresholds_t * t) 
{
      value_t * value = p->values;
      threshold_t * threshold = t->thresholds;
      int failed = 0;
      int passed = 0;
      int i;
      for (i = 0; i < NR_ATTRIBUTES; i++) {
            if (value->id && threshold->id && value->id == threshold->id) {
                  if (value->value <= threshold->threshold) {
                        ++failed;
                  }
                  else {
                        ++passed;
                  }
            }
            ++value;
            ++threshold;
      }
      return (passed ? -failed : 2);
}



int
nagios (values_t * p, thresholds_t * t) 
{
      value_t * value = p->values;
      threshold_t * threshold = t->thresholds;
      int status = OPERATIONAL;
      int prefailure = 0;
      int advisory = 0;
      int failed = 0;
      int passed = 0;
      int total = 0;
      int i;
      for (i = 0; i < NR_ATTRIBUTES; i++) {
            if (value->id && threshold->id && value->id == threshold->id) {
                  if (value->value <= threshold->threshold) {
                        ++failed;
                        if (value->status & 1) {
                              status = PREFAILURE;
                              ++prefailure;
                        }
                        else {
                              status = ADVISORY;
                              ++advisory;
                        }
                  }
                  else {
                        ++passed;
                  }
                  ++total;
            }
            ++value;
            ++threshold;
      }
      switch (status) {
      case PREFAILURE:
            printf (_("CRITICAL - %d Harddrive PreFailure%cDetected! %d/%d tests failed.\n"),
                    prefailure,
                    prefailure > 1 ? 's' : ' ',
                    failed,
                total);
            status=STATE_CRITICAL;
            break;
      case ADVISORY:
            printf (_("WARNING - %d Harddrive Advisor%s Detected. %d/%d tests failed.\n"),
                    advisory,
                    advisory > 1 ? "ies" : "y",
                    failed,
                    total);
            status=STATE_WARNING;
            break;
      case OPERATIONAL:
            printf (_("OK - Operational (%d/%d tests passed)\n"), passed, total);
            status=STATE_OK;
            break;
      default:
            printf (_("ERROR - Status '%d' unkown. %d/%d tests passed\n"), status,
                                    passed, total);
            status = STATE_UNKNOWN;
            break;
      }
      return status;
}



void
print_value (value_t * p, threshold_t * t) 
{
      printf ("Id=%3d, Status=%2d {%s , %s}, Value=%3d, Threshold=%3d, %s\n",
                              p->id, p->status, p->status & 1 ? "PreFailure" : "Advisory   ",
                              p->status & 2 ? "OnLine " : "OffLine", p->value, t->threshold,
                              p->value > t->threshold ? "Passed" : "Failed");
}



void
print_values (values_t * p, thresholds_t * t)
{
      value_t * value = p->values;
      threshold_t * threshold = t->thresholds;
      int i;
      for (i = 0; i < NR_ATTRIBUTES; i++) {
            if (value->id && threshold->id && value->id == threshold->id) {
                  print_value (value++, threshold++);
            }
      }
      printf
            (_("OffLineStatus=%d {%s}, AutoOffLine=%s, OffLineTimeout=%d minutes\n"),
             p->offline_status,
             get_offline_text (p->offline_status & 0x7f),
             (p->offline_status & 0x80 ? "Yes" : "No"),
             p->offline_timeout / 60);
      printf
            (_("OffLineCapability=%d {%s %s %s}\n"),
             p->offline_capability,
             p->offline_capability & 1 ? "Immediate" : "",
             p->offline_capability & 2 ? "Auto" : "",
             p->offline_capability & 4 ? "AbortOnCmd" : "SuspendOnCmd");
      printf
            (_("SmartRevision=%d, CheckSum=%d, SmartCapability=%d {%s %s}\n"),
             p->revision,
             p->checksum,
             p->smart_capability,
             p->smart_capability & 1 ? "SaveOnStandBy" : "",
             p->smart_capability & 2 ? "AutoSave" : "");
}


int
smart_cmd_simple (int fd, enum SmartCommand command, __u8 val0, char show_error) 
{
      int e = 0;
      __u8 args[4];
      args[0] = WIN_SMART;
      args[1] = val0;
      args[2] = smart_command[command].value;
      args[3] = 0;
      if (ioctl (fd, HDIO_DRIVE_CMD, &args)) {
            e = errno;
            if (show_error) {
                  printf (_("CRITICAL - %s: %s\n"), smart_command[command].text, strerror (errno));
            }
      }
      return e;
}



int
smart_read_thresholds (int fd, thresholds_t * thresholds) 
{
      int e;
      __u8 args[4 + 512];
      args[0] = WIN_SMART;
  args[1] = 0;
  args[2] = SMART_READ_THRESHOLDS;
  args[3] = 1;
      if (ioctl (fd, HDIO_DRIVE_CMD, &args)) {
            e = errno;
            printf (_("CRITICAL - SMART_READ_THRESHOLDS: %s\n"), strerror (errno));
            return e;
      }
      memcpy (thresholds, args + 4, 512);
      return 0;
}


void
print_help (void)
{
      print_revision (progname, NP_VERSION);

      printf ("Nagios feature - 1999 Robert Dale <rdale@digital-mission.com>\n");
      printf ("(C) 1999 Ragnar Hojland Espinosa <ragnar@lightside.dhis.org>\n");
      printf (COPYRIGHT, copyright, email);

      printf (_("This plugin checks a local hard drive with the (Linux specific) SMART interface [http://smartlinux.sourceforge.net/smart/index.php]."));

  printf ("\n\n");

  print_usage ();

  printf (_(UT_HELP_VRSN));
  printf (_(UT_EXTRA_OPTS));

  printf (" %s\n", "-d, --device=DEVICE");
  printf ("    %s\n", _("Select device DEVICE"));
  printf ("    %s\n", _("Note: if the device is selected with this option, _no_ other options are accepted"));
  printf (" %s\n", "-i, --immediate");
  printf ("    %s\n", _("Perform immediately offline tests"));
  printf (" %s\n", "-q, --quiet-check");
  printf ("    %s\n", _("Returns the number of failed tests"));
  printf (" %s\n", "-1, --auto-on");
  printf ("    %s\n", _("Turn on automatic offline tests"));
  printf (" %s\n", "-0, --auto-off");
  printf ("    %s\n", _("Turn off automatic offline tests"));
  printf (" %s\n", "-n, --nagios");
  printf ("    %s\n", _("Output suitable for Nagios"));

#ifdef NP_EXTRA_OPTS
  printf ("\n");
  printf ("%s\n", _("Notes:"));
  printf (_(UT_EXTRA_OPTS_NOTES));
#endif

  printf (_(UT_SUPPORT));
}

 /* todo : add to the long nanual as example
 *
 *     Run with:  check_ide-smart --nagios [-d] <DRIVE>
 *     Where DRIVE is an IDE drive, ie. /dev/hda, /dev/hdb, /dev/hdc
 *
 *       - Returns 0 on no errors
 *       - Returns 1 on advisories
 *       - Returns 2 on prefailure
 *       - Returns -1 not too often
 */


void
print_usage (void)
{
  printf (_("Usage:"));
  printf ("%s [-d <device>] [-i <immediate>] [-q quiet] [-1 <auto-on>]",progname);
  printf (" [-O <auto-off>] [-n <nagios>]\n");
}

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