plugins/check_swap.c

   1 /*****************************************************************************
   2 *
   3 * Monitoring check_swap plugin
   4 *
   5 * License: GPL
   6 * Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
   7 * Copyright (c) 2000-2024 Monitoring Plugins Development Team
   8 *
   9 * Description:
  10 *
  11 * This file contains the check_swap plugin
  12 *
  13 *
  14 * This program is free software: you can redistribute it and/or modify
  15 * it under the terms of the GNU General Public License as published by
  16 * the Free Software Foundation, either version 3 of the License, or
  17 * (at your option) any later version.
  18 *
  19 * This program is distributed in the hope that it will be useful,
  20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 * GNU General Public License for more details.
  23 *
  24 * You should have received a copy of the GNU General Public License
  25 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  26 *
  27 *
  28 *****************************************************************************/
  29
  30 const char *progname = "check_swap";
  31 const char *copyright = "2000-2024";
  32 const char *email = "devel@monitoring-plugins.org";
  33
  34 #include "common.h"
  35 #include "popen.h"
  36 #include "utils.h"
  37
  38 #ifdef HAVE_DECL_SWAPCTL
  39 # ifdef HAVE_SYS_PARAM_H
  40 #  include <sys/param.h>
  41 # endif
  42 # ifdef HAVE_SYS_SWAP_H
  43 #  include <sys/swap.h>
  44 # endif
  45 # ifdef HAVE_SYS_STAT_H
  46 #  include <sys/stat.h>
  47 # endif
  48 #endif
  49
  50 #ifndef SWAP_CONVERSION
  51 # define SWAP_CONVERSION 1
  52 #endif
  53
  54 typedef struct {
  55         bool is_percentage;
  56         uint64_t value;
  57 } threshold;
  58
  59 int check_swap (float free_swap_mb, float total_swap_mb);
  60 int process_arguments (int argc, char **argv);
  61 int validate_arguments (void);
  62 void print_usage (void);
  63 void print_help (void);
  64
  65 threshold warn;
  66 threshold crit;
  67 int verbose;
  68 bool allswaps = false;
  69 int no_swap_state = STATE_CRITICAL;
  70
  71 int
  72 main (int argc, char **argv)
  73 {
  74         unsigned int percent_used, percent;
  75         uint64_t total_swap_mb = 0, used_swap_mb = 0, free_swap_mb = 0;
  76         uint64_t dsktotal_mb = 0, dskused_mb = 0, dskfree_mb = 0;
  77         uint64_t tmp_KB = 0;
  78         int result = STATE_UNKNOWN;
  79         char input_buffer[MAX_INPUT_BUFFER];
  80 #ifdef HAVE_PROC_MEMINFO
  81         FILE *fp;
  82 #else
  83         int conv_factor = SWAP_CONVERSION;
  84 # ifdef HAVE_SWAP
  85         char *temp_buffer;
  86         char *swap_command;
  87         char *swap_format;
  88 # else
  89 #  ifdef HAVE_DECL_SWAPCTL
  90         int i=0, nswaps=0, swapctl_res=0;
  91 #   ifdef CHECK_SWAP_SWAPCTL_SVR4
  92         swaptbl_t *tbl=NULL;
  93         swapent_t *ent=NULL;
  94 #   else
  95 #    ifdef CHECK_SWAP_SWAPCTL_BSD
  96         struct swapent *ent;
  97 #    endif /* CHECK_SWAP_SWAPCTL_BSD */
  98 #   endif /* CHECK_SWAP_SWAPCTL_SVR4 */
  99 #  endif /* HAVE_DECL_SWAPCTL */
 100 # endif
 101 #endif
 102         char str[32];
 103         char *status;
 104
 105         setlocale (LC_ALL, "");
 106         bindtextdomain (PACKAGE, LOCALEDIR);
 107         textdomain (PACKAGE);
 108
 109         status = strdup ("");
 110
 111         /* Parse extra opts if any */
 112         argv=np_extra_opts (&argc, argv, progname);
 113
 114         if (process_arguments (argc, argv) == ERROR)
 115                 usage4 (_("Could not parse arguments"));
 116
 117 #ifdef HAVE_PROC_MEMINFO
 118         if (verbose >= 3) {
 119                 printf("Reading PROC_MEMINFO at %s\n", PROC_MEMINFO);
 120         }
 121         fp = fopen (PROC_MEMINFO, "r");
 122         while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
 123                 /*
 124                  * The following sscanf call looks for a line looking like: "Swap: 123 123 123"
 125                  * On which kind of system this format exists, I can not say, but I wanted to
 126                  * document this for people who are not adapt with sscanf anymore, like me
 127                  */
 128                 if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %lu %lu %lu", &dsktotal_mb, &dskused_mb, &dskfree_mb) == 3) {
 129                         dsktotal_mb = dsktotal_mb / (1024 * 1024);      /* Apply conversion */
 130                         dskused_mb = dskused_mb / (1024 * 1024);
 131                         dskfree_mb = dskfree_mb / (1024 * 1024);
 132                         total_swap_mb += dsktotal_mb;
 133                         used_swap_mb += dskused_mb;
 134                         free_swap_mb += dskfree_mb;
 135                         if (allswaps) {
 136                                 if (dsktotal_mb == 0)
 137                                         percent=100.0;
 138                                 else
 139                                         percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
 140                                 result = max_state (result, check_swap (dskfree_mb, dsktotal_mb));
 141                                 if (verbose)
 142                                         xasprintf (&status, "%s [%lu (%d%%)]", status, dskfree_mb, 100 - percent);
 143                         }
 144                 }
 145
 146                 /*
 147                  * The following sscanf call looks for lines looking like: "SwapTotal: 123" and "SwapFree: 123"
 148                  * This format exists at least on Debian Linux with a 5.* kernel
 149                  */
 150                 else if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%[TotalFreCchd]%*[:] %lu %*[k]%*[B]", str, &tmp_KB)) {
 151                         if (verbose >= 3) {
 152                                 printf("Got %s with %lu\n", str, tmp_KB);
 153                         }
 154                         /* I think this part is always in Kb, so convert to mb */
 155                         if (strcmp ("Total", str) == 0) {
 156                                 dsktotal_mb = tmp_KB / 1024;
 157                         }
 158                         else if (strcmp ("Free", str) == 0) {
 159                                 dskfree_mb = dskfree_mb + tmp_KB / 1024;
 160                         }
 161                         else if (strcmp ("Cached", str) == 0) {
 162                                 dskfree_mb = dskfree_mb + tmp_KB / 1024;
 163                         }
 164                 }
 165         }
 166         fclose(fp);
 167         dskused_mb = dsktotal_mb - dskfree_mb;
 168         total_swap_mb = dsktotal_mb;
 169         used_swap_mb = dskused_mb;
 170         free_swap_mb = dskfree_mb;
 171 #else
 172 # ifdef HAVE_SWAP
 173         xasprintf(&swap_command, "%s", SWAP_COMMAND);
 174         xasprintf(&swap_format, "%s", SWAP_FORMAT);
 175
 176 /* These override the command used if a summary (and thus ! allswaps) is required */
 177 /* The summary flag returns more accurate information about swap usage on these OSes */
 178 #  ifdef _AIX
 179         if (!allswaps) {
 180                 xasprintf(&swap_command, "%s", "/usr/sbin/lsps -s");
 181                 xasprintf(&swap_format, "%s", "%lu%*s %lu");
 182                 conv_factor = 1;
 183         }
 184 #  endif
 185
 186         if (verbose >= 2)
 187                 printf (_("Command: %s\n"), swap_command);
 188         if (verbose >= 3)
 189                 printf (_("Format: %s\n"), swap_format);
 190
 191         child_process = spopen (swap_command);
 192         if (child_process == NULL) {
 193                 printf (_("Could not open pipe: %s\n"), swap_command);
 194                 return STATE_UNKNOWN;
 195         }
 196
 197         child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
 198         if (child_stderr == NULL)
 199                 printf (_("Could not open stderr for %s\n"), swap_command);
 200
 201         sprintf (str, "%s", "");
 202         /* read 1st line */
 203         fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
 204         if (strcmp (swap_format, "") == 0) {
 205                 temp_buffer = strtok (input_buffer, " \n");
 206                 while (temp_buffer) {
 207                         if (strstr (temp_buffer, "blocks"))
 208                                 sprintf (str, "%s %s", str, "%lu");
 209                         else if (strstr (temp_buffer, "dskfree"))
 210                                 sprintf (str, "%s %s", str, "%lu");
 211                         else
 212                                 sprintf (str, "%s %s", str, "%*s");
 213                         temp_buffer = strtok (NULL, " \n");
 214                 }
 215         }
 216
 217 /* If different swap command is used for summary switch, need to read format differently */
 218 #  ifdef _AIX
 219         if (!allswaps) {
 220                 fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_process);       /* Ignore first line */
 221                 sscanf (input_buffer, swap_format, &total_swap_mb, &used_swap_mb);
 222                 free_swap_mb = total_swap_mb * (100 - used_swap_mb) /100;
 223                 used_swap_mb = total_swap_mb - free_swap_mb;
 224                 if (verbose >= 3)
 225                         printf (_("total=%.0f, used=%.0f, free=%.0f\n"), total_swap_mb, used_swap_mb, free_swap_mb);
 226         } else {
 227 #  endif
 228                 while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
 229                         sscanf (input_buffer, swap_format, &dsktotal_mb, &dskfree_mb);
 230
 231                         dsktotal_mb = dsktotal_mb / conv_factor;
 232                         /* AIX lists percent used, so this converts to dskfree in MBs */
 233 #  ifdef _AIX
 234                         dskfree_mb = dsktotal_mb * (100 - dskfree_mb) / 100;
 235 #  else
 236                         dskfree_mb = dskfree_mb / conv_factor;
 237 #  endif
 238                         if (verbose >= 3)
 239                                 printf (_("total=%.0f, free=%.0f\n"), dsktotal_mb, dskfree_mb);
 240
 241                         dskused_mb = dsktotal_mb - dskfree_mb;
 242                         total_swap_mb += dsktotal_mb;
 243                         used_swap_mb += dskused_mb;
 244                         free_swap_mb += dskfree_mb;
 245                         if (allswaps) {
 246                                 percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
 247                                 result = max_state (result, check_swap (dskfree_mb, dsktotal_mb));
 248                                 if (verbose)
 249                                         xasprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
 250                         }
 251                 }
 252 #  ifdef _AIX
 253         }
 254 #  endif
 255
 256         /* If we get anything on STDERR, at least set warning */
 257         while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
 258                 result = max_state (result, STATE_WARNING);
 259
 260         /* close stderr */
 261         (void) fclose (child_stderr);
 262
 263         /* close the pipe */
 264         if (spclose (child_process))
 265                 result = max_state (result, STATE_WARNING);
 266 # else
 267 #  ifdef CHECK_SWAP_SWAPCTL_SVR4
 268
 269         /* get the number of active swap devices */
 270         if((nswaps=swapctl(SC_GETNSWP, NULL))== -1)
 271                 die(STATE_UNKNOWN, _("Error getting swap devices\n") );
 272
 273         if(nswaps == 0)
 274                 die(STATE_OK, _("SWAP OK: No swap devices defined\n"));
 275
 276         if(verbose >= 3)
 277                 printf("Found %d swap device(s)\n", nswaps);
 278
 279         /* initialize swap table + entries */
 280         tbl=(swaptbl_t*)malloc(sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
 281
 282         if(tbl==NULL)
 283                 die(STATE_UNKNOWN, _("malloc() failed!\n"));
 284
 285         memset(tbl, 0, sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
 286         tbl->swt_n=nswaps;
 287         for(i=0;i<nswaps;i++){
 288                 if((tbl->swt_ent[i].ste_path=(char*)malloc(sizeof(char)*MAXPATHLEN)) == NULL)
 289                         die(STATE_UNKNOWN, _("malloc() failed!\n"));
 290         }
 291
 292         /* and now, tally 'em up */
 293         swapctl_res=swapctl(SC_LIST, tbl);
 294         if(swapctl_res < 0){
 295                 perror(_("swapctl failed: "));
 296                 die(STATE_UNKNOWN, _("Error in swapctl call\n"));
 297         }
 298
 299         for(i=0;i<nswaps;i++){
 300                 dsktotal_mb = (float) tbl->swt_ent[i].ste_pages / SWAP_CONVERSION;
 301                 dskfree_mb = (float) tbl->swt_ent[i].ste_free /  SWAP_CONVERSION;
 302                 dskused_mb = ( dsktotal_mb - dskfree_mb );
 303
 304                 if (verbose >= 3)
 305                         printf ("dsktotal_mb=%.0f dskfree_mb=%.0f dskused_mb=%.0f\n", dsktotal_mb, dskfree_mb, dskused_mb);
 306
 307                 if(allswaps && dsktotal_mb > 0){
 308                         percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
 309                         result = max_state (result, check_swap (dskfree_mb, dsktotal_mb));
 310                         if (verbose) {
 311                                 xasprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
 312                         }
 313                 }
 314
 315                 total_swap_mb += dsktotal_mb;
 316                 free_swap_mb += dskfree_mb;
 317                 used_swap_mb += dskused_mb;
 318         }
 319
 320         /* and clean up after ourselves */
 321         for(i=0;i<nswaps;i++){
 322                 free(tbl->swt_ent[i].ste_path);
 323         }
 324         free(tbl);
 325 #  else
 326 #   ifdef CHECK_SWAP_SWAPCTL_BSD
 327
 328         /* get the number of active swap devices */
 329         nswaps=swapctl(SWAP_NSWAP, NULL, 0);
 330
 331         /* initialize swap table + entries */
 332         ent=(struct swapent*)malloc(sizeof(struct swapent)*nswaps);
 333
 334         /* and now, tally 'em up */
 335         swapctl_res=swapctl(SWAP_STATS, ent, nswaps);
 336         if(swapctl_res < 0){
 337                 perror(_("swapctl failed: "));
 338                 die(STATE_UNKNOWN, _("Error in swapctl call\n"));
 339         }
 340
 341         for(i=0;i<nswaps;i++){
 342                 dsktotal_mb = (float) ent[i].se_nblks / conv_factor;
 343                 dskused_mb = (float) ent[i].se_inuse / conv_factor;
 344                 dskfree_mb = ( dsktotal_mb - dskused_mb );
 345
 346                 if(allswaps && dsktotal_mb > 0){
 347                         percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
 348                         result = max_state (result, check_swap(dskfree_mb, dsktotal_mb));
 349                         if (verbose) {
 350                                 xasprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
 351                         }
 352                 }
 353
 354                 total_swap_mb += dsktotal_mb;
 355                 free_swap_mb += dskfree_mb;
 356                 used_swap_mb += dskused_mb;
 357         }
 358
 359         /* and clean up after ourselves */
 360         free(ent);
 361
 362 #   endif /* CHECK_SWAP_SWAPCTL_BSD */
 363 #  endif /* CHECK_SWAP_SWAPCTL_SVR4 */
 364 # endif /* HAVE_SWAP */
 365 #endif /* HAVE_PROC_MEMINFO */
 366
 367         /* if total_swap_mb == 0, let's not divide by 0 */
 368         if(total_swap_mb) {
 369                 percent_used = 100 * ((double) used_swap_mb) / ((double) total_swap_mb);
 370         } else {
 371                 percent_used = 100;
 372                 status = "- Swap is either disabled, not present, or of zero size. ";
 373         }
 374
 375         result = max_state (result, check_swap(free_swap_mb, total_swap_mb));
 376         printf (_("SWAP %s - %d%% free (%dMB out of %dMB) %s|"),
 377                         state_text (result),
 378                         (100 - percent_used), (int) free_swap_mb, (int) total_swap_mb, status);
 379
 380         uint64_t warn_print = warn.value;
 381         if (warn.is_percentage) warn_print = warn.value * (total_swap_mb *1024 *1024/100);
 382         uint64_t crit_print = crit.value;
 383         if (crit.is_percentage) crit_print = crit.value * (total_swap_mb *1024 *1024/100);
 384
 385         puts (perfdata_uint64 ("swap", free_swap_mb *1024 *1024, "B",
 386                         true, warn_print,
 387                         true, crit_print,
 388                         true, 0,
 389                         true, (long) total_swap_mb * 1024 * 1024));
 390
 391         return result;
 392 }
 393
 394
 395 int
 396 check_swap(float free_swap_mb, float total_swap_mb)
 397 {
 398
 399         if (!total_swap_mb) return no_swap_state;
 400
 401         uint64_t free_swap = free_swap_mb * (1024 * 1024);              /* Convert back to bytes as warn and crit specified in bytes */
 402         uint64_t usage_percentage = ((total_swap_mb - free_swap_mb) / total_swap_mb) * 100;
 403
 404         if (warn.value || crit.value) {                                 /* Thresholds defined */
 405                 if (!crit.is_percentage && crit.value >= free_swap) return STATE_CRITICAL;
 406                 if (!warn.is_percentage && warn.value >= free_swap) return STATE_WARNING;
 407
 408                 if (crit.is_percentage &&
 409                                 crit.value != 0 &&
 410                                 usage_percentage >= (100 - crit.value))
 411                 {
 412                                 return STATE_CRITICAL;
 413                 }
 414
 415                 if (warn.is_percentage &&
 416                                 warn.value != 0 &&
 417                                 usage_percentage >= (100 - warn.value))
 418                 {
 419                                 return STATE_WARNING;
 420                 }
 421
 422                 return STATE_OK;
 423         } else {                                                        /* Without thresholds */
 424                 return STATE_OK;
 425         }
 426 }
 427
 428
 429
 430 /* process command-line arguments */
 431 int
 432 process_arguments (int argc, char **argv)
 433 {
 434         int c = 0;  /* option character */
 435
 436         int option = 0;
 437         static struct option longopts[] = {
 438                 {"warning", required_argument, 0, 'w'},
 439                 {"critical", required_argument, 0, 'c'},
 440                 {"allswaps", no_argument, 0, 'a'},
 441                 {"no-swap", required_argument, 0, 'n'},
 442                 {"verbose", no_argument, 0, 'v'},
 443                 {"version", no_argument, 0, 'V'},
 444                 {"help", no_argument, 0, 'h'},
 445                 {0, 0, 0, 0}
 446         };
 447
 448         while (1) {
 449                 c = getopt_long (argc, argv, "+?Vvhac:w:n:", longopts, &option);
 450
 451                 if (c == -1 || c == EOF)
 452                         break;
 453
 454                 switch (c) {
 455                 case 'w': /* warning size threshold */
 456                         {
 457                                 /*
 458                                  * We expect either a positive integer value without a unit, which means
 459                                  * the unit is Bytes or a positive integer value and a percentage sign (%),
 460                                  * which means the value must be with 0 and 100 and is relative to the total swap
 461                                  */
 462                                 size_t length;
 463                                 length = strlen(optarg);
 464
 465                                 if (optarg[length - 1] == '%') {
 466                                         /* It's percentage */
 467                                         warn.is_percentage = true;
 468                                         optarg[length - 1] = '\0';
 469                                         if (is_uint64(optarg, &warn.value)) {
 470                                                 if (warn.value > 100) {
 471                                                         usage4 (_("Warning threshold percentage must be <= 100!"));
 472                                                 }
 473                                         }
 474                                         break;
 475                                 } else {
 476                                         /* It's Bytes */
 477                                         warn.is_percentage = false;
 478                                         if (is_uint64(optarg, &warn.value)) {
 479                                                 break;
 480                                         } else {
 481                                                 usage4 (_("Warning threshold be positive integer or percentage!"));
 482                                         }
 483                                 }
 484                         }
 485                 case 'c': /* critical size threshold */
 486                         {
 487                                 /*
 488                                  * We expect either a positive integer value without a unit, which means
 489                                  * the unit is Bytes or a positive integer value and a percentage sign (%),
 490                                  * which means the value must be with 0 and 100 and is relative to the total swap
 491                                  */
 492                                 size_t length;
 493                                 length = strlen(optarg);
 494
 495                                 if (optarg[length - 1] == '%') {
 496                                         /* It's percentage */
 497                                         crit.is_percentage = true;
 498                                         optarg[length - 1] = '\0';
 499                                         if (is_uint64(optarg, &crit.value)) {
 500                                                 if (crit.value> 100) {
 501                                                         usage4 (_("Critical threshold percentage must be <= 100!"));
 502                                                 }
 503                                         }
 504                                         break;
 505                                 } else {
 506                                         /* It's Bytes */
 507                                         crit.is_percentage = false;
 508                                         if (is_uint64(optarg, &crit.value)) {
 509                                                 break;
 510                                         } else {
 511                                                 usage4 (_("Critical threshold be positive integer or percentage!"));
 512                                         }
 513                                 }
 514                           }
 515                 case 'a':                                                                       /* all swap */
 516                         allswaps = true;
 517                         break;
 518                 case 'n':
 519                         if ((no_swap_state = mp_translate_state(optarg)) == ERROR) {
 520                                 usage4 (_("no-swap result must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3)."));
 521                         }
 522                         break;
 523                 case 'v':                                                                       /* verbose */
 524                         verbose++;
 525                         break;
 526                 case 'V':                                                                       /* version */
 527                         print_revision (progname, NP_VERSION);
 528                         exit (STATE_UNKNOWN);
 529                 case 'h':                                                                       /* help */
 530                         print_help ();
 531                         exit (STATE_UNKNOWN);
 532                 case '?':                                                                       /* error */
 533                         usage5 ();
 534                 }
 535         }
 536
 537         c = optind;
 538         if (c == argc)
 539                 return validate_arguments ();
 540
 541         return validate_arguments ();
 542 }
 543
 544
 545
 546 int
 547 validate_arguments (void)
 548 {
 549         if ((warn.is_percentage == crit.is_percentage) && (warn.value < crit.value)) {
 550                 /* This is NOT triggered if warn and crit are different units, e.g warn is percentage
 551                  * and crit is absolute. We cannot determine the condition at this point since we
 552                  * dont know the value of total swap yet
 553                  */
 554                 usage4(_("Warning should be more than critical"));
 555         }
 556         return OK;
 557 }
 558
 559
 560
 561 void
 562 print_help (void)
 563 {
 564         print_revision (progname, NP_VERSION);
 565
 566         printf (_(COPYRIGHT), copyright, email);
 567
 568         printf ("%s\n", _("Check swap space on local machine."));
 569
 570         printf ("\n\n");
 571
 572         print_usage ();
 573
 574         printf (UT_HELP_VRSN);
 575         printf (UT_EXTRA_OPTS);
 576
 577         printf (" %s\n", "-w, --warning=INTEGER");
 578         printf ("    %s\n", _("Exit with WARNING status if less than INTEGER bytes of swap space are free"));
 579         printf (" %s\n", "-w, --warning=PERCENT%");
 580         printf ("    %s\n", _("Exit with WARNING status if less than PERCENT of swap space is free"));
 581         printf (" %s\n", "-c, --critical=INTEGER");
 582         printf ("    %s\n", _("Exit with CRITICAL status if less than INTEGER bytes of swap space are free"));
 583         printf (" %s\n", "-c, --critical=PERCENT%");
 584         printf ("    %s\n", _("Exit with CRITICAL status if less than PERCENT of swap space is free"));
 585         printf (" %s\n", "-a, --allswaps");
 586         printf ("    %s\n", _("Conduct comparisons for all swap partitions, one by one"));
 587         printf (" %s\n", "-n, --no-swap=<ok|warning|critical|unknown>");
 588         printf ("    %s %s\n", _("Resulting state when there is no swap regardless of thresholds. Default:"), state_text(no_swap_state));
 589         printf (UT_VERBOSE);
 590
 591         printf ("\n");
 592         printf ("%s\n", _("Notes:"));
 593         printf (" %s\n", _("Both INTEGER and PERCENT thresholds can be specified, they are all checked."));
 594         printf (" %s\n", _("Without thresholds, the plugin shows free swap space and performance data, but always returns OK."));
 595         printf (" %s\n", _("On AIX, if -a is specified, uses lsps -a, otherwise uses lsps -s."));
 596
 597         printf (UT_SUPPORT);
 598 }
 599
 600
 601 void
 602 print_usage (void)
 603 {
 604         printf ("%s\n", _("Usage:"));
 605         printf (" %s [-av] [-w <percent_free>%%] [-c <percent_free>%%]\n",progname);
 606         printf ("  [-w <bytes_free>] [-c <bytes_free>] [-n <state>]\n");
 607 }