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check_disk.c

/******************************************************************************
*
* Nagios check_disk plugin
*
* License: GPL
* Copyright (c) 1999-2006 nagios-plugins team
*
* Last Modified: $Date: 2006/10/26 20:51:24 $
*
* Description:
*
* This file contains the check_disk plugin
*
* License Information:
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: check_disk.c,v 1.79 2006/10/26 20:51:24 tonvoon Exp $
* 
*****************************************************************************/

const char *progname = "check_disk";
const char *program_name = "check_disk";  /* Required for coreutils libs */
const char *revision = "$Revision: 1.79 $";
const char *copyright = "1999-2006";
const char *email = "nagiosplug-devel@lists.sourceforge.net";


#include "common.h"
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#include <assert.h>
#include "popen.h"
#include "utils.h"
#include "utils_disk.h"
#include <stdarg.h>
#include "fsusage.h"
#include "mountlist.h"
#include "intprops.h"   /* necessary for TYPE_MAXIMUM */
#if HAVE_LIMITS_H
# include <limits.h>
#endif


/* If nonzero, show inode information. */
static int inode_format = 1;

/* If nonzero, show even filesystems with zero size or
   uninteresting types. */
static int show_all_fs = 1;

/* If nonzero, show only local filesystems.  */
static int show_local_fs = 0;

/* If positive, the units to use when printing sizes;
   if negative, the human-readable base.  */
/* static int output_block_size; */

/* If nonzero, invoke the `sync' system call before getting any usage data.
   Using this option can make df very slow, especially with many or very
   busy disks.  Note that this may make a difference on some systems --
   SunOs4.1.3, for one.  It is *not* necessary on Linux.  */
/* static int require_sync = 0; */

/* Linked list of filesystem types to display.
   If `fs_select_list' is NULL, list all types.
   This table is generated dynamically from command-line options,
   rather than hardcoding into the program what it thinks are the
   valid filesystem types; let the user specify any filesystem type
   they want to, and if there are any filesystems of that type, they
   will be shown.

   Some filesystem types:
   4.2 4.3 ufs nfs swap ignore io vm efs dbg */

/* static struct parameter_list *fs_select_list; */

/* Linked list of filesystem types to omit.
   If the list is empty, don't exclude any types.  */

static struct name_list *fs_exclude_list;

static struct name_list *dp_exclude_list;

static struct parameter_list *path_select_list = NULL;

/* Linked list of mounted filesystems. */
static struct mount_entry *mount_list;

/* For long options that have no equivalent short option, use a
   non-character as a pseudo short option, starting with CHAR_MAX + 1.  */
enum
{
  SYNC_OPTION = CHAR_MAX + 1,
  NO_SYNC_OPTION,
  BLOCK_SIZE_OPTION
};

#ifdef _AIX
 #pragma alloca
#endif

/* Linked list of mounted filesystems. */
static struct mount_entry *mount_list;

int process_arguments (int, char **);
void print_path (const char *mypath);
int validate_arguments (uintmax_t, uintmax_t, double, double, double, double, char *);
void print_help (void);
void print_usage (void);
double calculate_percent(uintmax_t, uintmax_t);

double w_dfp = -1.0;
double c_dfp = -1.0;
char *path;
char *exclude_device;
char *units;
uintmax_t mult = 1024 * 1024;
int verbose = 0;
int erronly = FALSE;
int display_mntp = FALSE;
int exact_match = FALSE;
char *warn_freespace_units = NULL;
char *crit_freespace_units = NULL;
char *warn_freespace_percent = NULL;
char *crit_freespace_percent = NULL;
char *warn_usedspace_units = NULL;
char *crit_usedspace_units = NULL;
char *warn_usedspace_percent = NULL;
char *crit_usedspace_percent = NULL;
char *warn_usedinodes_percent = NULL;
char *crit_usedinodes_percent = NULL;


int
main (int argc, char **argv)
{
  int result = STATE_UNKNOWN;
  int disk_result = STATE_UNKNOWN;
  char *output;
  char *details;
  char *perf;
  char *preamble;
  double inode_space_pct;
  uintmax_t total, available, available_to_root, used;
  double dfree_pct = -1, dused_pct = -1;
  double dused_units, dfree_units, dtotal_units;
  double dused_inodes_percent, dfree_inodes_percent;
  double warning_high_tide = UINT_MAX;
  double critical_high_tide = UINT_MAX;
  int temp_result;

  struct mount_entry *me;
  struct fs_usage fsp;
  struct parameter_list *temp_list, *path;
  struct name_list *seen = NULL;

  preamble = strdup (" - free space:");
  output = strdup ("");
  details = strdup ("");
  perf = strdup ("");

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

  mount_list = read_file_system_list (0);

  if (process_arguments (argc, argv) == ERROR)
    usage4 (_("Could not parse arguments"));

  /* If a list of paths has not been selected, find entire
     mount list and create list of paths
   */
  if (! path_select_list) {
    for (me = mount_list; me; me = me->me_next) {
      path = np_add_parameter(&path_select_list, me->me_mountdir);
      path->best_match = me;
      set_thresholds(&path->freespace_units, warn_freespace_units, crit_freespace_units);
      set_thresholds(&path->freespace_percent, warn_freespace_percent, crit_freespace_percent);
      set_thresholds(&path->usedspace_units, warn_usedspace_units, crit_usedspace_units);
      set_thresholds(&path->usedspace_percent, warn_usedspace_percent, crit_usedspace_percent);
      set_thresholds(&path->usedinodes_percent, warn_usedinodes_percent, crit_usedinodes_percent);
    }
  } else {
    np_set_best_match(path_select_list, mount_list, exact_match);

    /* Error if no match found for specified paths */
    temp_list = path_select_list;
    while (temp_list) {
      if (! temp_list->best_match) {
        die (STATE_CRITICAL, _("DISK %s: %s not found\n"), _("CRITICAL"), temp_list->name);
      }
      temp_list = temp_list->name_next;
    }
  }

  /* Process for every path in list */
  for (path = path_select_list; path; path=path->name_next) {

    /* reset disk result */
    disk_result = STATE_UNKNOWN;

    me = path->best_match;

    /* Filters */

    /* Remove filesystems already seen */
    if (np_seen_name(seen, me->me_mountdir)) {
      continue;
    } else {
      np_add_name(&seen, me->me_mountdir);
    }
    /* Skip remote filesystems if we're not interested in them */
    if (me->me_remote && show_local_fs) {
      continue;
    /* Skip pseudo fs's if we haven't asked for all fs's */
    } else if (me->me_dummy && !show_all_fs) {
      continue;
    /* Skip excluded fstypes */
    } else if (fs_exclude_list && np_find_name (fs_exclude_list, me->me_type)) {
      continue;
    /* Skip excluded fs's */  
    } else if (dp_exclude_list && 
             (np_find_name (dp_exclude_list, me->me_devname) ||
              np_find_name (dp_exclude_list, me->me_mountdir))) {
      continue;
    }

    get_fs_usage (me->me_mountdir, me->me_devname, &fsp);

    if (fsp.fsu_blocks && strcmp ("none", me->me_mountdir)) {
      total = fsp.fsu_blocks;
      available = fsp.fsu_bavail;
      available_to_root = fsp.fsu_bfree;
      used = total - available_to_root;

      dused_pct = calculate_percent( used, used + available );    /* used + available can never be > uintmax */
     
      dfree_pct = 100 - dused_pct;
      dused_units = used*fsp.fsu_blocksize/mult;
      dfree_units = available*fsp.fsu_blocksize/mult;
      dtotal_units = total*fsp.fsu_blocksize/mult;
      dused_inodes_percent = calculate_percent(fsp.fsu_files - fsp.fsu_ffree, fsp.fsu_files);
      dfree_inodes_percent = 100 - dused_inodes_percent;

      if (verbose >= 3) {
        printf ("For %s, used_pct=%g free_pct=%g used_units=%g free_units=%g total_units=%g used_inodes_pct=%g\n", 
          me->me_mountdir, dused_pct, dfree_pct, dused_units, dfree_units, dtotal_units, dused_inodes_percent);
      }

      /* Threshold comparisons */

      temp_result = get_status(dfree_units, path->freespace_units);
      if (verbose >=3) printf("Freespace_units result=%d\n", temp_result);
      disk_result = max_state( disk_result, temp_result );

      temp_result = get_status(dfree_pct, path->freespace_percent);
      if (verbose >=3) printf("Freespace%% result=%d\n", temp_result);
      disk_result = max_state( disk_result, temp_result );

      temp_result = get_status(dused_units, path->usedspace_units);
      if (verbose >=3) printf("Usedspace_units result=%d\n", temp_result);
      disk_result = max_state( disk_result, temp_result );

      temp_result = get_status(dused_pct, path->usedspace_percent);
      if (verbose >=3) printf("Usedspace_percent result=%d\n", temp_result);
      disk_result = max_state( disk_result, temp_result );

      temp_result = get_status(dused_inodes_percent, path->usedinodes_percent);
      if (verbose >=3) printf("Usedinodes_percent result=%d\n", temp_result);
      disk_result = max_state( disk_result, temp_result );

      result = max_state(result, disk_result);

      /* What a mess of units. The output shows free space, the perf data shows used space. Yikes!
         Hack here. Trying to get warn/crit levels from freespace_(units|percent) for perf
         data. Assumption that start=0. Roll on new syntax...
      */
      if (path->freespace_units->warning != NULL) {
        warning_high_tide = dtotal_units - path->freespace_units->warning->end;
      }
      if (path->freespace_percent->warning != NULL) {
        warning_high_tide = abs( min( (double) warning_high_tide, (double) (1.0 - path->freespace_percent->warning->end/100)*dtotal_units ));
      }
      if (path->freespace_units->critical != NULL) {
        critical_high_tide = dtotal_units - path->freespace_units->critical->end;
      }
      if (path->freespace_percent->critical != NULL) {
        critical_high_tide = abs( min( (double) critical_high_tide, (double) (1.0 - path->freespace_percent->critical->end/100)*dtotal_units ));
      }

      asprintf (&perf, "%s %s", perf,
                perfdata ((!strcmp(me->me_mountdir, "none") || display_mntp) ? me->me_devname : me->me_mountdir,
                          dused_units, units,
                    TRUE, warning_high_tide,
                    TRUE, critical_high_tide,
                    TRUE, 0,
                    TRUE, dtotal_units));

      if (disk_result==STATE_OK && erronly && !verbose)
        continue;

      if (disk_result!=STATE_OK || verbose>=0) {
        asprintf (&output, "%s %s %.0f %s (%.0f%%",
                  output,
                  (!strcmp(me->me_mountdir, "none") || display_mntp) ? me->me_devname : me->me_mountdir,
                  dfree_units,
                  units,
                  dfree_pct);
        if (dused_inodes_percent < 0) {
          asprintf(&output, "%s inode=-);", output);
        } else {
          asprintf(&output, "%s inode=%.0f%%);", output, dfree_inodes_percent );
        }
      }

      /* TODO: Need to do a similar debug line
      asprintf (&details, _("%s\n\
%.0f of %.0f %s (%.0f%% inode=%.0f%%) free on %s (type %s mounted on %s) warn:%lu crit:%lu warn%%:%.0f%% crit%%:%.0f%%"),
                details, dfree_units, dtotal_units, units, dfree_pct, inode_space_pct,
                me->me_devname, me->me_type, me->me_mountdir,
                (unsigned long)w_df, (unsigned long)c_df, w_dfp, c_dfp);
      */

    }

  }

  if (verbose > 2)
    asprintf (&output, "%s%s", output, details);


  printf ("DISK %s%s%s|%s\n", state_text (result), (erronly && result==STATE_OK) ? "" : preamble, output, perf);
  return result;
}


double calculate_percent(uintmax_t value, uintmax_t total) {
  double pct = -1;
  /* I don't understand the below, but it is taken from coreutils' df */
  /* Seems to be calculating pct, in the best possible way */
  if (value <= TYPE_MAXIMUM(uintmax_t) / 100 
    && total != 0) {
    uintmax_t u100 = value * 100;
    pct = u100 / total + (u100 % total != 0);
  } else {
    /* Possible rounding errors - see coreutils' df for more explanation */
    double u = value;
    double t = total;
    if (t) {
      long int lipct = pct = u * 100 / t;
      double ipct = lipct;

      /* Like 'pct = ceil (dpct);', but without ceil - from coreutils again */
      if (ipct - 1 < pct && pct <= ipct + 1)
        pct = ipct + (ipct < pct);
    }
  }
  return pct;
}

/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
  int c;
  struct parameter_list *se;
  struct parameter_list *temp_list;
  int result = OK;
  struct stat *stat_buf;

  int option = 0;
  static struct option longopts[] = {
    {"timeout", required_argument, 0, 't'},
    {"warning", required_argument, 0, 'w'},
    {"critical", required_argument, 0, 'c'},
    {"iwarning", required_argument, 0, 'W'},
    /* Dang, -C is taken. We might want to reshuffle this. */
    {"icritical", required_argument, 0, 'K'},
    {"local", required_argument, 0, 'l'},
    {"kilobytes", required_argument, 0, 'k'},
    {"megabytes", required_argument, 0, 'm'},
    {"units", required_argument, 0, 'u'},
    {"path", required_argument, 0, 'p'},
    {"partition", required_argument, 0, 'p'},
    {"exclude_device", required_argument, 0, 'x'},
    {"exclude-type", required_argument, 0, 'X'},
    {"mountpoint", no_argument, 0, 'M'},
    {"errors-only", no_argument, 0, 'e'},
    {"exact-match", no_argument, 0, 'E'},
    {"verbose", no_argument, 0, 'v'},
    {"quiet", no_argument, 0, 'q'},
    {"clear", no_argument, 0, 'C'},
    {"version", no_argument, 0, 'V'},
    {"help", no_argument, 0, 'h'},
    {0, 0, 0, 0}
  };

  if (argc < 2)
    return ERROR;

  np_add_name(&fs_exclude_list, "iso9660");

  for (c = 1; c < argc; c++)
    if (strcmp ("-to", argv[c]) == 0)
      strcpy (argv[c], "-t");

  while (1) {
    c = getopt_long (argc, argv, "+?VqhveCt:c:w:K:W:u:p:x:X:mklME", longopts, &option);

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

    switch (c) {
    case 't':                 /* timeout period */
      if (is_integer (optarg)) {
        timeout_interval = atoi (optarg);
        break;
      }
      else {
        usage2 (_("Timeout interval must be a positive integer"), optarg);
      }

    /* See comments for 'c' */
    case 'w':                 /* warning threshold */
      if (strstr(optarg, "%")) {
        if (*optarg == '@') {
          warn_freespace_percent = optarg;
        } else {
          asprintf(&warn_freespace_percent, "@%s", optarg);
        }
      } else {
        if (*optarg == '@') {
        warn_freespace_units = optarg;
        } else {
          asprintf(&warn_freespace_units, "@%s", optarg);
        }
      }
      break;

    /* Awful mistake where the range values do not make sense. Normally, 
       you alert if the value is within the range, but since we are using
       freespace, we have to alert if outside the range. Thus we artifically
       force @ at the beginning of the range, so that it is backwards compatible
    */
    case 'c':                 /* critical threshold */
      if (strstr(optarg, "%")) {
        if (*optarg == '@') {
          crit_freespace_percent = optarg;
        } else {
          asprintf(&crit_freespace_percent, "@%s", optarg);
        }
      } else {
        if (*optarg == '@') {
          crit_freespace_units = optarg;
        } else {
          asprintf(&crit_freespace_units, "@%s", optarg);
        }
      }
      break;

    case 'W':                 /* warning inode threshold */
      warn_usedinodes_percent = optarg;
      break;
    case 'K':                 /* critical inode threshold */
      crit_usedinodes_percent = optarg;
      break;
    case 'u':
      if (units)
        free(units);
      if (! strcmp (optarg, "bytes")) {
        mult = (uintmax_t)1;
        units = strdup ("B");
      } else if (! strcmp (optarg, "kB")) {
        mult = (uintmax_t)1024;
        units = strdup ("kB");
      } else if (! strcmp (optarg, "MB")) {
        mult = (uintmax_t)1024 * 1024;
        units = strdup ("MB");
      } else if (! strcmp (optarg, "GB")) {
        mult = (uintmax_t)1024 * 1024 * 1024;
        units = strdup ("GB");
      } else if (! strcmp (optarg, "TB")) {
        mult = (uintmax_t)1024 * 1024 * 1024 * 1024;
        units = strdup ("TB");
      } else {
        die (STATE_UNKNOWN, _("unit type %s not known\n"), optarg);
      }
      if (units == NULL)
        die (STATE_UNKNOWN, _("failed allocating storage for '%s'\n"), "units");
      break;
    case 'k': /* display mountpoint */
      mult = 1024;
      if (units)
        free(units);
      units = strdup ("kB");
      break;
    case 'm': /* display mountpoint */
      mult = 1024 * 1024;
      if (units)
        free(units);
      units = strdup ("MB");
      break;
    case 'l':
      show_local_fs = 1;      
      break;
    case 'p':                 /* select path */
      if (! (warn_freespace_units || crit_freespace_units || warn_freespace_percent || 
             crit_freespace_percent || warn_usedspace_units || crit_usedspace_units ||
             warn_usedspace_percent || crit_usedspace_percent || warn_usedinodes_percent ||
             crit_usedinodes_percent)) {
        die (STATE_UNKNOWN, "DISK %s: %s", _("UNKNOWN"), _("Must set a threshold value before using -p\n"));
      }
      se = np_add_parameter(&path_select_list, optarg);
      set_thresholds(&se->freespace_units, warn_freespace_units, crit_freespace_units);
      set_thresholds(&se->freespace_percent, warn_freespace_percent, crit_freespace_percent);
      set_thresholds(&se->usedspace_units, warn_usedspace_units, crit_usedspace_units);
      set_thresholds(&se->usedspace_percent, warn_usedspace_percent, crit_usedspace_percent);
      set_thresholds(&se->usedinodes_percent, warn_usedinodes_percent, crit_usedinodes_percent);
      break;
    case 'x':                 /* exclude path or partition */
      np_add_name(&dp_exclude_list, optarg);
      break;
    case 'X':                 /* exclude file system type */
      np_add_name(&fs_exclude_list, optarg);
      break;
    case 'v':                 /* verbose */
      verbose++;
      break;
    case 'q':                 /* verbose */
      verbose--;
      break;
    case 'e':
      erronly = TRUE;
      break;
    case 'E':
      exact_match = TRUE;
      break;
    case 'M': /* display mountpoint */
      display_mntp = TRUE;
      break;
    case 'C':
      warn_freespace_units = NULL;
      crit_freespace_units = NULL;
      warn_usedspace_units = NULL;
      crit_usedspace_units = NULL;
      warn_freespace_percent = NULL;
      crit_freespace_percent = NULL;
      warn_usedspace_percent = NULL;
      crit_usedspace_percent = NULL;
      warn_usedinodes_percent = NULL;
      crit_usedinodes_percent = NULL;
      break;
    case 'V':                 /* version */
      print_revision (progname, revision);
      exit (STATE_OK);
    case 'h':                 /* help */
      print_help ();
      exit (STATE_OK);
    case '?':                 /* help */
      usage (_("Unknown argument"));
    }
  }

  /* Support for "check_disk warn crit [fs]" with thresholds at used% level */
  c = optind;
  if (warn_usedspace_percent == NULL && argc > c && is_intnonneg (argv[c]))
    warn_usedspace_percent = argv[c++];

  if (crit_usedspace_percent == NULL && argc > c && is_intnonneg (argv[c]))
    crit_usedspace_percent = argv[c++];

  if (argc > c && path == NULL) {
    se = np_add_parameter(&path_select_list, strdup(argv[c++]));
    set_thresholds(&se->freespace_units, warn_freespace_units, crit_freespace_units);
    set_thresholds(&se->freespace_percent, warn_freespace_percent, crit_freespace_percent);
    set_thresholds(&se->usedspace_units, warn_usedspace_units, crit_usedspace_units);
    set_thresholds(&se->usedspace_percent, warn_usedspace_percent, crit_usedspace_percent);
    set_thresholds(&se->usedinodes_percent, warn_usedinodes_percent, crit_usedinodes_percent);
  }

  if (units == NULL) {
    units = strdup ("MB");
    mult = (uintmax_t)1024 * 1024;
  }

  if (path_select_list) {
    temp_list = path_select_list;
    stat_buf = malloc(sizeof *stat_buf);
    while (temp_list) {
      /* Stat each entry to check that dir exists */
      if (stat (temp_list->name, &stat_buf[0])) {
      printf("DISK %s - ", _("CRITICAL"));
        die (STATE_CRITICAL, _("%s does not exist\n"), temp_list->name);
      }
      /* if (validate_arguments (temp_list->w_df,
                              temp_list->c_df,
                              temp_list->w_dfp,
                              temp_list->c_dfp,
                              temp_list->w_idfp,
                              temp_list->c_idfp,
                              temp_list->name) == ERROR)
        result = ERROR;
      */
      temp_list = temp_list->name_next;
    }
    free(stat_buf);
    return result;
  } else {
    return TRUE;
    /* return validate_arguments (w_df, c_df, w_dfp, c_dfp, w_idfp, c_idfp, NULL); */
  }
}



void
print_path (const char *mypath) 
{
  if (mypath == NULL)
    printf ("\n");
  else
    printf (_(" for %s\n"), mypath);
}



/* TODO: Remove?

int
validate_arguments (uintmax_t w, uintmax_t c, double wp, double cp, double iwp, double icp, char *mypath)
{
  if (w < 0 && c < 0 && wp < 0.0 && cp < 0.0) {
    printf (_("INPUT ERROR: No thresholds specified"));
    print_path (mypath);
    return ERROR;
  }
  else if ((wp >= 0.0 || cp >= 0.0) &&
           (wp < 0.0 || cp < 0.0 || wp > 100.0 || cp > 100.0 || cp > wp)) {
    printf (_("\
INPUT ERROR: C_DFP (%f) should be less than W_DFP (%.1f) and both should be between zero and 100 percent, inclusive"),
            cp, wp);
    print_path (mypath);
    return ERROR;
  }
  else if ((iwp >= 0.0 || icp >= 0.0) &&
           (iwp < 0.0 || icp < 0.0 || iwp > 100.0 || icp > 100.0 || icp > iwp)) {
    printf (_("\
INPUT ERROR: C_IDFP (%f) should be less than W_IDFP (%.1f) and both should be between zero and 100 percent, inclusive"),
            icp, iwp);
    print_path (mypath);
    return ERROR;
  }
  else if ((w > 0 || c > 0) && (w == 0 || c == 0 || c > w)) {
    printf (_("\
INPUT ERROR: C_DF (%lu) should be less than W_DF (%lu) and both should be greater than zero"),
            (unsigned long)c, (unsigned long)w);
    print_path (mypath);
    return ERROR;
  }
  
  return OK;
}

*/







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

  printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
  printf (COPYRIGHT, copyright, email);

  printf ("%s\n", _("This plugin checks the amount of used disk space on a mounted file system"));
  printf ("%s\n", _("and generates an alert if free space is less than one of the threshold values"));

  printf ("\n\n");

  print_usage ();

  printf (_(UT_HELP_VRSN));

  printf (" %s\n", "-w, --warning=INTEGER");
  printf ("    %s\n", _("Exit with WARNING status if less than INTEGER units of disk are free"));
  printf (" %s\n", "-w, --warning=PERCENT%");
  printf ("    %s\n", _("Exit with WARNING status if less than PERCENT of disk space is free"));
  printf (" %s\n", "-W, --iwarning=PERCENT%");
  printf ("    %s\n", _("Exit with WARNING status if less than PERCENT of inode space is free"));
  printf (" %s\n", "-K, --icritical=PERCENT%");
  printf ("    %s\n", _("Exit with CRITICAL status if less than PERCENT of inode space is free"));
  printf (" %s\n", "-c, --critical=INTEGER");
  printf ("    %s\n", _("Exit with CRITICAL status if less than INTEGER units of disk are free"));
  printf (" %s\n", "-c, --critical=PERCENT%");
  printf ("    %s\n", _("Exit with CRITCAL status if less than PERCENT of disk space is free"));
  printf (" %s\n", "-C, --clear");
  printf ("    %s\n", _("Clear thresholds"));
  printf (" %s\n", "-u, --units=STRING");
  printf ("    %s\n", _("Choose bytes, kB, MB, GB, TB (default: MB)"));
  printf (" %s\n", "-k, --kilobytes");
  printf ("    %s\n", _("Same as '--units kB'"));
  printf (" %s\n", "-m, --megabytes");
  printf ("    %s\n", _("Same as '--units MB'"));
  printf (" %s\n", "-l, --local");
  printf ("    %s\n", _("Only check local filesystems"));
  printf (" %s\n", "-p, --path=PATH, --partition=PARTITION");
  printf ("    %s\n", _("Path or partition (may be repeated)"));
  printf (" %s\n", "-x, --exclude_device=PATH <STRING>");
  printf ("    %s\n", _("Ignore device (only works if -p unspecified)"));
  printf (" %s\n", _("-X, --exclude-type=TYPE <STRING>"));
  printf ("    %s\n", _("Ignore all filesystems of indicated type (may be repeated)"));
  printf (" %s\n", "-m, --mountpoint");
  printf ("    %s\n", _("Display the mountpoint instead of the partition"));
  printf (" %s\n", "-E, --exact-match");
  printf ("    %s\n", _("For paths or partitions specified with -p, only check for exact paths"));
  printf (" %s\n", "-e, --errors-only");
  printf ("    %s\n", _("Display only devices/mountpoints with errors"));
  printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
  printf (_(UT_VERBOSE));
  printf ("\n");
  printf ("%s\n", _("Examples:"));
  printf (" %s\n", "check_disk -w 10% -c 5% -p /tmp -p /var -C -w 100000 -c 50000 -p /");
  printf ("    %s\n", _("Checks /tmp and /var at 10% and 5%, and / at 100MB and 50MB"));
  printf (_(UT_SUPPORT));
}



void
print_usage (void)
{
  printf (_("Usage:"));
  printf (" %s -w limit -c limit [-p path | -x device] [-t timeout]", progname);
  printf ("[-m] [-e] [-W limit] [-K limit] [-v] [-q] [-E]\n");
}

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