summaryrefslogtreecommitdiffstats
path: root/plugins/check_disk.c
blob: 81dd6c73def9d18944326bf3d276413472e81de6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
/******************************************************************************

 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.

 $Id$
 
*****************************************************************************/

const char *progname = "check_disk";
const char *program_name = "check_disk";	/* Required for coreutils libs */
const char *revision = "$Revision$";
const char *copyright = "1999-2004";
const char *email = "nagiosplug-devel@lists.sourceforge.net";

 /*
  * Additional inode code by Jorgen Lundman <lundman@lundman.net>
  */


#include "common.h"
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#include <assert.h>
#include "popen.h"
#include "utils.h"
#include <stdarg.h>
#include "../lib/fsusage.h"
#include "../lib/mountlist.h"
#if HAVE_LIMITS_H
# include <limits.h>
#endif

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

/* 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; */

/* A filesystem type to display. */

struct name_list
{
  char *name;
  int found;
  int found_len;
  uintmax_t w_df;
  uintmax_t c_df;
  double w_dfp;
  double c_dfp;
  double w_idfp;
  double c_idfp;
  struct name_list *name_next;
};

/* 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 name_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 name_list *path_select_list;

static struct name_list *dev_select_list;

/* 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

int process_arguments (int, char **);
void print_path (const char *mypath);
int validate_arguments (uintmax_t, uintmax_t, double, double, double, double, char *);
int check_disk (double usp, uintmax_t free_disk, double uisp);
int walk_name_list (struct name_list *list, const char *name);
void print_help (void);
void print_usage (void);

uintmax_t w_df = 0;
uintmax_t c_df = 0;
double w_dfp = -1.0;
double c_dfp = -1.0;
double w_idfp = -1.0;
double c_idfp = -1.0;
char *path;
char *exclude_device;
char *units;
uintmax_t mult = 1024 * 1024;
int verbose = 0;
int erronly = FALSE;
int display_mntp = FALSE;

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



int
main (int argc, char **argv)
{
	double usp = -1.0, uisp = -1.0;
	int result = STATE_UNKNOWN;
	int disk_result = STATE_UNKNOWN;
	char file_system[MAX_INPUT_BUFFER];
	char *output;
	char *details;
	char *perf;
	uintmax_t psize;
	float free_space, free_space_pct, total_space, inode_space_pct;

	struct mount_entry *me;
	struct fs_usage fsp;
	struct name_list *temp_list;

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

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

	mount_list = read_filesystem_list (0);

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

	/* if a list of paths has been selected, preseed the list with
	 * the longest matching filesystem name by iterating across
	 * the mountlist once ahead of time.  this will allow a query on
	 * "/var/log" to return information about "/var" if no "/var/log"
	 * filesystem exists, etc.  this is the default behavior already
	 * with df-based checks, but for systems with their own space
	 * checking routines, this should make them more consistent.
	 */
	if(path_select_list){
		for (me = mount_list; me; me = me->me_next) {
			walk_name_list(path_select_list, me->me_mountdir);
			walk_name_list(path_select_list, me->me_devname);
		}
		/* now pretend we never saw anything, but keep found_len.
		 * thus future searches will only match the best match */
		for (temp_list = path_select_list; temp_list; temp_list=temp_list->name_next){
			temp_list->found=0;
		}
	}

	/* for every mount entry */
	for (me = mount_list; me; me = me->me_next) {
		/* if there's a list of paths to select, the current mount
		 * entry matches in path or device name, get fs usage */
		if (path_select_list &&
		     (walk_name_list (path_select_list, me->me_mountdir) ||
		      walk_name_list (path_select_list, me->me_devname) ) ) {
			get_fs_usage (me->me_mountdir, me->me_devname, &fsp);
		/* else if there's a list of paths/devices to select (but
		 * we didn't match above) skip to the next mount entry */
		} else if (dev_select_list || path_select_list) {
			continue;
		/* skip remote filesystems if we're not interested in them */
		} else 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 && walk_name_list (fs_exclude_list, me->me_type)) {
			continue;
		/* skip excluded fs's */	
		} else if (dp_exclude_list && 
		         (walk_name_list (dp_exclude_list, me->me_devname) ||
		          walk_name_list (dp_exclude_list, me->me_mountdir))) {
			continue;
		/* otherwise, get fs usage */
		} else {
			get_fs_usage (me->me_mountdir, me->me_devname, &fsp);
		}

		if (fsp.fsu_blocks && strcmp ("none", me->me_mountdir)) {
			usp = (double)(fsp.fsu_blocks - fsp.fsu_bavail) * 100 / fsp.fsu_blocks;
                        uisp = (double)(fsp.fsu_files - fsp.fsu_ffree) * 100 / fsp.fsu_files;
			disk_result = check_disk (usp, fsp.fsu_bavail, uisp);


			result = max_state (disk_result, result);
			psize = fsp.fsu_blocks*fsp.fsu_blocksize/mult;


                        /* Moved this computation up here so we can add it
                         * to perf */
                        inode_space_pct = (float)fsp.fsu_ffree*100/fsp.fsu_files;


			asprintf (&perf, "%s %s", perf,
			          perfdata ((!strcmp(file_system, "none") || display_mntp) ? me->me_devname : me->me_mountdir,
			                    psize-(fsp.fsu_bavail*fsp.fsu_blocksize/mult), units,
			                    TRUE, min ((uintmax_t)psize-(uintmax_t)w_df, (uintmax_t)((1.0-w_dfp/100.0)*psize)),
			                    TRUE, min ((uintmax_t)psize-(uintmax_t)c_df, (uintmax_t)((1.0-c_dfp/100.0)*psize)),
                                            TRUE, inode_space_pct,

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

			free_space = (float)fsp.fsu_bavail*fsp.fsu_blocksize/mult;
			free_space_pct = (float)fsp.fsu_bavail*100/fsp.fsu_blocks;
			total_space = (float)fsp.fsu_blocks*fsp.fsu_blocksize/mult;
			if (disk_result!=STATE_OK || verbose>=0)
				asprintf (&output, ("%s %s %.0f %s (%.0f%% inode=%.0f%%);"),
				          output,
				          (!strcmp(file_system, "none") || display_mntp) ? me->me_devname : me->me_mountdir,
				          free_space,
				          units,
					  free_space_pct,
					  inode_space_pct);

			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, free_space, total_space, units, free_space_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);

		}

	}

	asprintf (&output, "%s|%s", output, perf);

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

	/* Override result if paths specified and not found */
	temp_list = path_select_list;
	while (temp_list) {
		if (!temp_list->found) {
			asprintf (&output, _("%s [%s not found]"), output, temp_list->name);
			result = STATE_CRITICAL;
		}
		temp_list = temp_list->name_next;
	}

	printf ("DISK %s%s\n", state_text (result), output);
	return result;
}



/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
	int c;
	struct name_list *se;
	struct name_list **pathtail = &path_select_list;
	struct name_list **fstail = &fs_exclude_list;
	struct name_list **dptail = &dp_exclude_list;
	struct name_list *temp_list;
	int result = OK;

	unsigned long l;

	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'},
		{"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;

	se = (struct name_list *) malloc (sizeof (struct name_list));
	se->name = strdup ("iso9660");
	se->name_next = NULL;
	se->found = 0;
	se->found_len = 0;
	*fstail = se;
	fstail = &se->name_next;

	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:mklM", 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);
			}
		case 'w':									/* warning threshold */
			if (is_intnonneg (optarg)) {
				w_df = atoi (optarg);
				break;
			}
			else if (strpbrk (optarg, ",:") &&
							 strstr (optarg, "%") &&
							 sscanf (optarg, "%lu%*[:,]%lf%%", &l, &w_dfp) == 2) {
				w_df = (uintmax_t)l;
				break;
			}
			else if (strstr (optarg, "%") && sscanf (optarg, "%lf%%", &w_dfp) == 1) {
				break;
			}
			else {
				usage4 (_("Warning threshold must be integer or percentage!"));
			}
		case 'c':									/* critical threshold */
			if (is_intnonneg (optarg)) {
				c_df = atoi (optarg);
				break;
			}
			else if (strpbrk (optarg, ",:") &&
							 strstr (optarg, "%") &&
							 sscanf (optarg, "%lu%*[,:]%lf%%", &l, &c_dfp) == 2) {
				c_df = (uintmax_t)l;
				break;
			}
			else if (strstr (optarg, "%") && sscanf (optarg, "%lf%%", &c_dfp) == 1) {
				break;
			}
			else {
				usage4 (_("Critical threshold must be integer or percentage!"));
			}


                case 'W':                                                                       /* warning inode threshold */
                        if (strstr (optarg, "%") && sscanf (optarg, "%lf%%", &w_idfp) == 1) {
                        break;
                        }
                        else {
                   		usage (_("Warning inode threshold must be percentage!\n"));
                 	}
                case 'K':                                                                       /* kritical inode threshold */
                        if (strstr (optarg, "%") && sscanf (optarg, "%lf%%", &c_idfp) == 1) {
                        break;
                        }
                        else {
                   		usage (_("Critical inode threshold must be percentage!\n"));
                       }
		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 */
			se = (struct name_list *) malloc (sizeof (struct name_list));
			se->name = optarg;
			se->name_next = NULL;
			se->w_df = w_df;
			se->c_df = c_df;
			se->w_dfp = w_dfp;
			se->c_dfp = c_dfp;
			se->found = 0;
			se->found_len = 0;
			*pathtail = se;
			pathtail = &se->name_next;
			break;
 		case 'x':									/* exclude path or partition */
			se = (struct name_list *) malloc (sizeof (struct name_list));
			se->name = optarg;
			se->name_next = NULL;

                        /* If you don't clear the w_fd etc values here, they
                         * get processed when you walk the list and assigned
                         * to the global w_df!
                         */
                        se->w_df = 0;
                        se->c_df = 0;
                        se->w_dfp = 0;
                        se->c_dfp = 0;
			se->found = 0;
			se->found_len = 0;
			*dptail = se;
			dptail = &se->name_next;
			break;
		case 'X':									/* exclude file system type */
			se = (struct name_list *) malloc (sizeof (struct name_list));
			se->name = optarg;
			se->name_next = NULL;
                        /* If you don't clear the w_fd etc values here, they
                         * get processed when you walk the list and assigned
                         * to the global w_df!
                         */
                        se->w_df = 0;
                        se->c_df = 0;
                        se->w_dfp = 0;
                        se->c_dfp = 0;
			se->found = 0;
			se->found_len = 0;
			*fstail = se;
			fstail = &se->name_next;
			break;
		case 'v':									/* verbose */
			verbose++;
			break;
		case 'q':									/* verbose */
			verbose--;
			break;
		case 'e':
			erronly = TRUE;
			break;
		case 'M': /* display mountpoint */
			display_mntp = TRUE;
			break;
		case 'C':
			w_df = 0;
			c_df = 0;
			w_dfp = -1.0;
			c_dfp = -1.0;
			break;
		case 'V':									/* version */
			print_revision (progname, revision);
			exit (STATE_OK);
		case 'h':									/* help */
			print_help ();
			exit (STATE_OK);
		case '?':									/* help */
			usage2 (_("Unknown argument"), optarg);
		}
	}

	/* Support for "check_disk warn crit [fs]" with thresholds at used level */
	c = optind;
	if (w_dfp < 0 && argc > c && is_intnonneg (argv[c]))
		w_dfp = (100.0 - atof (argv[c++]));

	if (c_dfp < 0 && argc > c && is_intnonneg (argv[c]))
		c_dfp = (100.0 - atof (argv[c++]));

	if (argc > c && path == NULL) {
		se = (struct name_list *) malloc (sizeof (struct name_list));
		se->name = strdup (argv[c++]);
		se->name_next = NULL;
		se->w_df = w_df;
		se->c_df = c_df;
		se->w_dfp = w_dfp;
		se->c_dfp = c_dfp;
		se->found =0;
		se->found_len = 0;
		*pathtail = se;
	}

	if (path_select_list) {
		temp_list = path_select_list;
		while (temp_list) {
			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;
		}
		return result;
	} else {
		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);

	return;
}



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



int

check_disk (double usp, uintmax_t free_disk, double uisp)
{
       int result = STATE_UNKNOWN;
       /* check the percent used space against thresholds */
       if (usp >= 0.0 && c_dfp >=0.0 && usp >= (100.0 - c_dfp))
               result = STATE_CRITICAL;
       else if (uisp >= 0.0 && c_idfp >=0.0 && uisp >= (100.0 - c_idfp))
               result = STATE_CRITICAL;
       else if (c_df > 0 && free_disk <= c_df)
               result = STATE_CRITICAL;
       else if (usp >= 0.0 && w_dfp >=0.0 && usp >= (100.0 - w_dfp))
               result = STATE_WARNING;
       else if (uisp >= 0.0 && w_idfp >=0.0 && uisp >= (100.0 - w_idfp))
               result = STATE_WARNING;
       else if (w_df > 0 && free_disk <= w_df)
               result = STATE_WARNING;
       else if (usp >= 0.0)
		result = STATE_OK;
	return result;
}



int
walk_name_list (struct name_list *list, const char *name)
{
	int name_len;
	name_len = strlen(name);
	while (list) {
		/* if the paths match up to the length of the mount path,
		 * AND if the mount path name is longer than the longest
		 * found match, we have a new winner */
		if (name_len >= list->found_len && 
		    ! strncmp(list->name, name, name_len)) {
			list->found = 1;
			list->found_len = name_len;
			/* if required for name_lists that have not saved w_df, etc (eg exclude lists) */
			if (list->w_df) w_df = list->w_df;
			if (list->c_df) c_df = list->c_df;
			if (list->w_dfp>=0.0) w_dfp = list->w_dfp;
			if (list->c_dfp>=0.0) c_dfp = list->c_dfp;
			return TRUE;
		}
		list = list->name_next;
	}
	return FALSE;
}



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

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

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

	print_usage ();

	printf (_(UT_HELP_VRSN));

	printf (_("\
 -w, --warning=INTEGER\n\
   Exit with WARNING status if less than INTEGER --units of disk are free\n\
 -w, --warning=PERCENT%%\n\
   Exit with WARNING status if less than PERCENT of disk space is free\n\
 -W, --iwarning=PERCENT%%\n\
   Exit with WARNING status if less than PERCENT of inode space is free\n\
 -K, --icritical=PERCENT%%\n\
   Exit with CRITICAL status if less than PERCENT of inode space is free\n\
 -c, --critical=INTEGER\n\
   Exit with CRITICAL status if less than INTEGER --units of disk are free\n\
 -c, --critical=PERCENT%%\n\
   Exit with CRITCAL status if less than PERCENT of disk space is free\n\
 -C, --clear\n\
    Clear thresholds\n"));

	printf (_("\
 -u, --units=STRING\n\
    Choose bytes, kB, MB, GB, TB (default: MB)\n\
 -k, --kilobytes\n\
    Same as '--units kB'\n\
 -m, --megabytes\n\
    Same as '--units MB'\n"));

	printf (_("\
 -l, --local\n\
    Only check local filesystems\n\
 -p, --path=PATH, --partition=PARTITION\n\
    Path or partition (may be repeated)\n\
 -x, --exclude_device=PATH <STRING>\n\
    Ignore device (only works if -p unspecified)\n\
 -X, --exclude-type=TYPE <STRING>\n\
    Ignore all filesystems of indicated type (may be repeated)\n\
 -M, --mountpoint\n\
    Display the mountpoint instead of the partition\n\
 -e, --errors-only\n\
    Display only devices/mountpoints with errors\n"));

	printf (_(UT_WARN_CRIT));

	printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);

	printf (_(UT_VERBOSE));

	printf ("%s", _("Examples:\n\
 check_disk -w 10% -c 5% -p /tmp -p /var -C -w 100000 -c 50000 -p /\n\
   Checks /tmp and /var at 10%,5% and / at 100MB, 50MB\n"));

	printf (_(UT_SUPPORT));
}



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