summaryrefslogtreecommitdiffstats
path: root/plugins/check_swap.c
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/check_swap.c')
-rw-r--r--plugins/check_swap.c782
1 files changed, 255 insertions, 527 deletions
diff --git a/plugins/check_swap.c b/plugins/check_swap.c
index e7ee785d..c3199ab7 100644
--- a/plugins/check_swap.c
+++ b/plugins/check_swap.c
@@ -1,607 +1,335 @@
1/***************************************************************************** 1/*****************************************************************************
2* 2 *
3* Monitoring check_swap plugin 3 * Monitoring check_swap plugin
4* 4 *
5* License: GPL 5 * License: GPL
6* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net) 6 * Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
7* Copyright (c) 2000-2024 Monitoring Plugins Development Team 7 * Copyright (c) 2000-2024 Monitoring Plugins Development Team
8* 8 *
9* Description: 9 * Description:
10* 10 *
11* This file contains the check_swap plugin 11 * This file contains the check_swap plugin
12* 12 *
13* 13 *
14* This program is free software: you can redistribute it and/or modify 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 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 16 * the Free Software Foundation, either version 3 of the License, or
17* (at your option) any later version. 17 * (at your option) any later version.
18* 18 *
19* This program is distributed in the hope that it will be useful, 19 * This program is distributed in the hope that it will be useful,
20* but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22* GNU General Public License for more details. 22 * GNU General Public License for more details.
23* 23 *
24* You should have received a copy of the GNU General Public License 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/>. 25 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26* 26 *
27* 27 *
28*****************************************************************************/ 28 *****************************************************************************/
29 29
30#include <stdint.h>
30const char *progname = "check_swap"; 31const char *progname = "check_swap";
31const char *copyright = "2000-2024"; 32const char *copyright = "2000-2024";
32const char *email = "devel@monitoring-plugins.org"; 33const char *email = "devel@monitoring-plugins.org";
33 34
34#include "common.h"
35#include "popen.h"
36#include "utils.h"
37
38#ifdef HAVE_DECL_SWAPCTL 35#ifdef HAVE_DECL_SWAPCTL
39# ifdef HAVE_SYS_PARAM_H 36# ifdef HAVE_SYS_PARAM_H
40# include <sys/param.h> 37# include <sys/param.h>
41# endif 38# endif
42# ifdef HAVE_SYS_SWAP_H 39# ifdef HAVE_SYS_SWAP_H
43# include <sys/swap.h> 40# include <sys/swap.h>
44# endif 41# endif
45# ifdef HAVE_SYS_STAT_H 42# ifdef HAVE_SYS_STAT_H
46# include <sys/stat.h> 43# include <sys/stat.h>
47# endif 44# endif
48#endif 45#endif
49 46
50#ifndef SWAP_CONVERSION 47#include "./check_swap.d/check_swap.h"
51# define SWAP_CONVERSION 1 48#include "./utils.h"
52#endif
53 49
54typedef struct { 50typedef struct {
55 bool is_percentage; 51 int errorcode;
56 uint64_t value; 52 swap_config config;
57} threshold; 53} swap_config_wrapper;
58
59int check_swap (float free_swap_mb, float total_swap_mb);
60int process_arguments (int argc, char **argv);
61int validate_arguments (void);
62void print_usage (void);
63void print_help (void);
64
65threshold warn;
66threshold crit;
67int verbose;
68bool allswaps = false;
69int no_swap_state = STATE_CRITICAL;
70
71int
72main (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 54
105 setlocale (LC_ALL, ""); 55static swap_config_wrapper process_arguments(int argc, char **argv);
106 bindtextdomain (PACKAGE, LOCALEDIR); 56void print_usage(void);
107 textdomain (PACKAGE); 57static void print_help(swap_config /*config*/);
108 58
109 status = strdup (""); 59int verbose;
110
111 /* Parse extra opts if any */
112 argv=np_extra_opts (&argc, argv, progname);
113 60
114 if (process_arguments (argc, argv) == ERROR) 61#define HUNDRED_PERCENT 100
115 usage4 (_("Could not parse arguments"));
116 62
117#ifdef HAVE_PROC_MEMINFO 63#define BYTES_TO_KiB(number) (number / 1024)
118 if (verbose >= 3) { 64#define BYTES_TO_MiB(number) (BYTES_TO_KiB(number) / 1024)
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 65
146 /* 66int main(int argc, char **argv) {
147 * The following sscanf call looks for lines looking like: "SwapTotal: 123" and "SwapFree: 123" 67 setlocale(LC_ALL, "");
148 * This format exists at least on Debian Linux with a 5.* kernel 68 bindtextdomain(PACKAGE, LOCALEDIR);
149 */ 69 textdomain(PACKAGE);
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 70
186 if (verbose >= 2) 71 char *status;
187 printf (_("Command: %s\n"), swap_command); 72 status = strdup("");
188 if (verbose >= 3)
189 printf (_("Format: %s\n"), swap_format);
190 73
191 child_process = spopen (swap_command); 74 /* Parse extra opts if any */
192 if (child_process == NULL) { 75 argv = np_extra_opts(&argc, argv, progname);
193 printf (_("Could not open pipe: %s\n"), swap_command);
194 return STATE_UNKNOWN;
195 }
196 76
197 child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r"); 77 swap_config_wrapper tmp = process_arguments(argc, argv);
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 78
217/* If different swap command is used for summary switch, need to read format differently */ 79 if (tmp.errorcode != OK) {
218# ifdef _AIX 80 usage4(_("Could not parse arguments"));
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 } 81 }
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 82
273 if(nswaps == 0) 83 swap_config config = tmp.config;
274 die(STATE_OK, _("SWAP OK: No swap devices defined\n"));
275 84
276 if(verbose >= 3) 85 swap_result data = get_swap_data(config);
277 printf("Found %d swap device(s)\n", nswaps);
278 86
279 /* initialize swap table + entries */ 87 double percent_used;
280 tbl=(swaptbl_t*)malloc(sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
281 88
282 if(tbl==NULL) 89 /* if total_swap_mb == 0, let's not divide by 0 */
283 die(STATE_UNKNOWN, _("malloc() failed!\n")); 90 if (data.metrics.total != 0) {
284 91 percent_used = HUNDRED_PERCENT * ((double)data.metrics.used) / ((double)data.metrics.total);
285 memset(tbl, 0, sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps)); 92 } else {
286 tbl->swt_n=nswaps; 93 printf(_("SWAP %s - Swap is either disabled, not present, or of zero "
287 for(i=0;i<nswaps;i++){ 94 "size."),
288 if((tbl->swt_ent[i].ste_path=(char*)malloc(sizeof(char)*MAXPATHLEN)) == NULL) 95 state_text(data.statusCode));
289 die(STATE_UNKNOWN, _("malloc() failed!\n")); 96 exit(config.no_swap_state);
290 } 97 }
291 98
292 /* and now, tally 'em up */ 99 if (verbose) {
293 swapctl_res=swapctl(SC_LIST, tbl); 100 printf("Computed usage percentage: %g\n", percent_used);
294 if(swapctl_res < 0){
295 perror(_("swapctl failed: "));
296 die(STATE_UNKNOWN, _("Error in swapctl call\n"));
297 } 101 }
298 102
299 for(i=0;i<nswaps;i++){ 103 uint64_t warn_print = config.warn.value;
300 dsktotal_mb = (float) tbl->swt_ent[i].ste_pages / SWAP_CONVERSION; 104 if (config.warn.is_percentage) {
301 dskfree_mb = (float) tbl->swt_ent[i].ste_free / SWAP_CONVERSION; 105 warn_print = config.warn.value * (data.metrics.total / HUNDRED_PERCENT);
302 dskused_mb = ( dsktotal_mb - dskfree_mb ); 106 }
303 107
304 if (verbose >= 3) 108 uint64_t crit_print = config.crit.value;
305 printf ("dsktotal_mb=%.0f dskfree_mb=%.0f dskused_mb=%.0f\n", dsktotal_mb, dskfree_mb, dskused_mb); 109 if (config.crit.is_percentage) {
110 crit_print = config.crit.value * (data.metrics.total / HUNDRED_PERCENT);
111 }
306 112
307 if(allswaps && dsktotal_mb > 0){ 113 char *perfdata = perfdata_uint64("swap", data.metrics.free, "B", true, warn_print, true, crit_print, true, 0, true, data.metrics.total);
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 }
314 114
315 total_swap_mb += dsktotal_mb; 115 if (verbose > 1) {
316 free_swap_mb += dskfree_mb; 116 printf("Warn threshold value: %" PRIu64 "\n", config.warn.value);
317 used_swap_mb += dskused_mb;
318 } 117 }
319 118
320 /* and clean up after ourselves */ 119 if ((config.warn.is_percentage && (percent_used >= (double)(HUNDRED_PERCENT - config.warn.value))) ||
321 for(i=0;i<nswaps;i++){ 120 config.warn.value >= data.metrics.free) {
322 free(tbl->swt_ent[i].ste_path); 121 data.statusCode = max_state(data.statusCode, STATE_WARNING);
323 } 122 }
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);
330 123
331 /* initialize swap table + entries */ 124 if (verbose > 1) {
332 ent=(struct swapent*)malloc(sizeof(struct swapent)*nswaps); 125 printf("Crit threshold value: %" PRIu64 "\n", config.crit.value);
126 }
333 127
334 /* and now, tally 'em up */ 128 if ((config.crit.is_percentage && (percent_used >= (double)(HUNDRED_PERCENT - config.crit.value))) ||
335 swapctl_res=swapctl(SWAP_STATS, ent, nswaps); 129 config.crit.value >= data.metrics.free) {
336 if(swapctl_res < 0){ 130 data.statusCode = max_state(data.statusCode, STATE_CRITICAL);
337 perror(_("swapctl failed: "));
338 die(STATE_UNKNOWN, _("Error in swapctl call\n"));
339 } 131 }
340 132
341 for(i=0;i<nswaps;i++){ 133 printf(_("SWAP %s - %g%% free (%lluMiB out of %lluMiB) %s|%s\n"), state_text(data.statusCode), (HUNDRED_PERCENT - percent_used),
342 dsktotal_mb = (float) ent[i].se_nblks / conv_factor; 134 BYTES_TO_MiB(data.metrics.free), BYTES_TO_MiB(data.metrics.total), status, perfdata);
343 dskused_mb = (float) ent[i].se_inuse / conv_factor;
344 dskfree_mb = ( dsktotal_mb - dskused_mb );
345 135
346 if(allswaps && dsktotal_mb > 0){ 136 exit(data.statusCode);
347 percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb)); 137}
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 }
353 138
354 total_swap_mb += dsktotal_mb; 139int check_swap(float free_swap_mb, float total_swap_mb, swap_config config) {
355 free_swap_mb += dskfree_mb; 140 if (total_swap_mb == 0) {
356 used_swap_mb += dskused_mb; 141 return config.no_swap_state;
357 } 142 }
358 143
359 /* and clean up after ourselves */ 144 uint64_t free_swap = (uint64_t)(free_swap_mb * (1024 * 1024)); /* Convert back to bytes as warn and crit specified in bytes */
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 */
366 145
367 /* if total_swap_mb == 0, let's not divide by 0 */ 146 if (!config.crit.is_percentage && config.crit.value >= free_swap) {
368 if(total_swap_mb) { 147 return STATE_CRITICAL;
369 percent_used = 100 * ((double) used_swap_mb) / ((double) total_swap_mb); 148 }
370 } else { 149 if (!config.warn.is_percentage && config.warn.value >= free_swap) {
371 percent_used = 100; 150 return STATE_WARNING;
372 status = "- Swap is either disabled, not present, or of zero size. ";
373 } 151 }
374 152
375 result = max_state (result, check_swap(free_swap_mb, total_swap_mb)); 153 uint64_t usage_percentage = (uint64_t)((total_swap_mb - free_swap_mb) / total_swap_mb) * HUNDRED_PERCENT;
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);
379 154
380 uint64_t warn_print = warn.value; 155 if (config.crit.is_percentage && config.crit.value != 0 && usage_percentage >= (HUNDRED_PERCENT - config.crit.value)) {
381 if (warn.is_percentage) warn_print = warn.value * (total_swap_mb *1024 *1024/100); 156 return STATE_CRITICAL;
382 uint64_t crit_print = crit.value; 157 }
383 if (crit.is_percentage) crit_print = crit.value * (total_swap_mb *1024 *1024/100);
384 158
385 puts (perfdata_uint64 ("swap", free_swap_mb *1024 *1024, "B", 159 if (config.warn.is_percentage && config.warn.value != 0 && usage_percentage >= (HUNDRED_PERCENT - config.warn.value)) {
386 true, warn_print, 160 return STATE_WARNING;
387 true, crit_print, 161 }
388 true, 0,
389 true, (long) total_swap_mb * 1024 * 1024));
390 162
391 return result; 163 return STATE_OK;
392} 164}
393 165
166/* process command-line arguments */
167swap_config_wrapper process_arguments(int argc, char **argv) {
168 swap_config_wrapper conf_wrapper = {.errorcode = OK};
169 conf_wrapper.config = swap_config_init();
394 170
395int 171 if (argc < 2) {
396check_swap(float free_swap_mb, float total_swap_mb) 172 conf_wrapper.errorcode = ERROR;
397{ 173 return conf_wrapper;
398 174 }
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}
427 175
176 static struct option longopts[] = {{"warning", required_argument, 0, 'w'}, {"critical", required_argument, 0, 'c'},
177 {"allswaps", no_argument, 0, 'a'}, {"no-swap", required_argument, 0, 'n'},
178 {"verbose", no_argument, 0, 'v'}, {"version", no_argument, 0, 'V'},
179 {"help", no_argument, 0, 'h'}, {0, 0, 0, 0}};
428 180
181 while (true) {
182 int option = 0;
183 int option_char = getopt_long(argc, argv, "+?Vvhac:w:n:", longopts, &option);
429 184
430/* process command-line arguments */ 185 if (option_char == -1 || option_char == EOF) {
431int
432process_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; 186 break;
187 }
453 188
454 switch (c) { 189 switch (option_char) {
455 case 'w': /* warning size threshold */ 190 case 'w': /* warning size threshold */
456 { 191 {
457 /* 192 /*
458 * We expect either a positive integer value without a unit, which means 193 * We expect either a positive integer value without a unit, which
459 * the unit is Bytes or a positive integer value and a percentage sign (%), 194 * means the unit is Bytes or a positive integer value and a
460 * which means the value must be with 0 and 100 and is relative to the total swap 195 * percentage sign (%), which means the value must be with 0 and 100
461 */ 196 * and is relative to the total swap
462 size_t length; 197 */
463 length = strlen(optarg); 198 size_t length;
464 199 length = strlen(optarg);
465 if (optarg[length - 1] == '%') { 200
466 /* It's percentage */ 201 if (optarg[length - 1] == '%') {
467 warn.is_percentage = true; 202 /* It's percentage */
468 optarg[length - 1] = '\0'; 203 conf_wrapper.config.warn.is_percentage = true;
469 if (is_uint64(optarg, &warn.value)) { 204 optarg[length - 1] = '\0';
470 if (warn.value > 100) { 205 if (is_uint64(optarg, &conf_wrapper.config.warn.value)) {
471 usage4 (_("Warning threshold percentage must be <= 100!")); 206 if (conf_wrapper.config.warn.value > HUNDRED_PERCENT) {
472 } 207 usage4(_("Warning threshold percentage must be <= 100!"));
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 } 208 }
483 } 209 }
210 break;
211 } /* It's Bytes */
212 conf_wrapper.config.warn.is_percentage = false;
213 if (is_uint64(optarg, &conf_wrapper.config.warn.value)) {
214 break;
484 } 215 }
216 usage4(_("Warning threshold be positive integer or "
217 "percentage!"));
218 }
485 case 'c': /* critical size threshold */ 219 case 'c': /* critical size threshold */
486 { 220 {
487 /* 221 /*
488 * We expect either a positive integer value without a unit, which means 222 * We expect either a positive integer value without a unit, which
489 * the unit is Bytes or a positive integer value and a percentage sign (%), 223 * means the unit is Bytes or a positive integer value and a
490 * which means the value must be with 0 and 100 and is relative to the total swap 224 * percentage sign (%), which means the value must be with 0 and 100
491 */ 225 * and is relative to the total swap
492 size_t length; 226 */
493 length = strlen(optarg); 227 size_t length;
494 228 length = strlen(optarg);
495 if (optarg[length - 1] == '%') { 229
496 /* It's percentage */ 230 if (optarg[length - 1] == '%') {
497 crit.is_percentage = true; 231 /* It's percentage */
498 optarg[length - 1] = '\0'; 232 conf_wrapper.config.crit.is_percentage = true;
499 if (is_uint64(optarg, &crit.value)) { 233 optarg[length - 1] = '\0';
500 if (crit.value> 100) { 234 if (is_uint64(optarg, &conf_wrapper.config.crit.value)) {
501 usage4 (_("Critical threshold percentage must be <= 100!")); 235 if (conf_wrapper.config.crit.value > HUNDRED_PERCENT) {
502 } 236 usage4(_("Critical threshold percentage must be <= 100!"));
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 } 237 }
513 } 238 }
514 } 239 break;
515 case 'a': /* all swap */ 240 } /* It's Bytes */
516 allswaps = true; 241 conf_wrapper.config.crit.is_percentage = false;
242 if (is_uint64(optarg, &conf_wrapper.config.crit.value)) {
243 break;
244 }
245 usage4(_("Critical threshold be positive integer or "
246 "percentage!"));
247 }
248 case 'a': /* all swap */
249 conf_wrapper.config.allswaps = true;
517 break; 250 break;
518 case 'n': 251 case 'n':
519 if ((no_swap_state = mp_translate_state(optarg)) == ERROR) { 252 if ((conf_wrapper.config.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).")); 253 usage4(_("no-swap result must be a valid state name (OK, "
254 "WARNING, CRITICAL, UNKNOWN) or integer (0-3)."));
521 } 255 }
522 break; 256 break;
523 case 'v': /* verbose */ 257 case 'v': /* verbose */
524 verbose++; 258 verbose++;
525 break; 259 break;
526 case 'V': /* version */ 260 case 'V': /* version */
527 print_revision (progname, NP_VERSION); 261 print_revision(progname, NP_VERSION);
528 exit (STATE_UNKNOWN); 262 exit(STATE_UNKNOWN);
529 case 'h': /* help */ 263 case 'h': /* help */
530 print_help (); 264 print_help(conf_wrapper.config);
531 exit (STATE_UNKNOWN); 265 exit(STATE_UNKNOWN);
532 case '?': /* error */ 266 case '?': /* error */
533 usage5 (); 267 usage5();
534 } 268 }
535 } 269 }
536 270
537 c = optind; 271 if (conf_wrapper.config.warn.value == 0 && conf_wrapper.config.crit.value == 0) {
538 if (c == argc) 272 conf_wrapper.errorcode = ERROR;
539 return validate_arguments (); 273 return conf_wrapper;
540 274 }
541 return validate_arguments (); 275 if ((conf_wrapper.config.warn.is_percentage == conf_wrapper.config.crit.is_percentage) &&
542} 276 (conf_wrapper.config.warn.value < conf_wrapper.config.crit.value)) {
543 277 /* This is NOT triggered if warn and crit are different units, e.g warn
544 278 * is percentage and crit is absolute. We cannot determine the condition
545 279 * at this point since we dont know the value of total swap yet
546int
547validate_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 */ 280 */
554 usage4(_("Warning should be more than critical")); 281 usage4(_("Warning should be more than critical"));
555 } 282 }
556 return OK;
557}
558
559 283
560 284 return conf_wrapper;
561void
562print_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} 285}
599 286
287void print_help(swap_config config) {
288 print_revision(progname, NP_VERSION);
289
290 printf(_(COPYRIGHT), copyright, email);
291
292 printf("%s\n", _("Check swap space on local machine."));
293
294 printf("\n\n");
295
296 print_usage();
297
298 printf(UT_HELP_VRSN);
299 printf(UT_EXTRA_OPTS);
300
301 printf(" %s\n", "-w, --warning=INTEGER");
302 printf(" %s\n", _("Exit with WARNING status if less than INTEGER bytes "
303 "of swap space are free"));
304 printf(" %s\n", "-w, --warning=PERCENT%");
305 printf(" %s\n", _("Exit with WARNING status if less than PERCENT of "
306 "swap space is free"));
307 printf(" %s\n", "-c, --critical=INTEGER");
308 printf(" %s\n", _("Exit with CRITICAL status if less than INTEGER bytes "
309 "of swap space are free"));
310 printf(" %s\n", "-c, --critical=PERCENT%");
311 printf(" %s\n", _("Exit with CRITICAL status if less than PERCENT of "
312 "swap space is free"));
313 printf(" %s\n", "-a, --allswaps");
314 printf(" %s\n", _("Conduct comparisons for all swap partitions, one by one"));
315 printf(" %s\n", "-n, --no-swap=<ok|warning|critical|unknown>");
316 printf(" %s %s\n",
317 _("Resulting state when there is no swap regardless of thresholds. "
318 "Default:"),
319 state_text(config.no_swap_state));
320 printf(UT_VERBOSE);
321
322 printf("\n");
323 printf("%s\n", _("Notes:"));
324 printf(" %s\n", _("Both INTEGER and PERCENT thresholds can be specified, "
325 "they are all checked."));
326 printf(" %s\n", _("On AIX, if -a is specified, uses lsps -a, otherwise uses lsps -s."));
327
328 printf(UT_SUPPORT);
329}
600 330
601void 331void print_usage(void) {
602print_usage (void) 332 printf("%s\n", _("Usage:"));
603{ 333 printf(" %s [-av] -w <percent_free>%% -c <percent_free>%%\n", progname);
604 printf ("%s\n", _("Usage:")); 334 printf(" -w <bytes_free> -c <bytes_free> [-n <state>]\n");
605 printf (" %s [-av] [-w <percent_free>%%] [-c <percent_free>%%]\n",progname);
606 printf (" [-w <bytes_free>] [-c <bytes_free>] [-n <state>]\n");
607} 335}