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authorEthan Galstad <egalstad@users.sourceforge.net>2002-02-28 06:42:51 (GMT)
committerEthan Galstad <egalstad@users.sourceforge.net>2002-02-28 06:42:51 (GMT)
commit44a321cb8a42d6c0ea2d96a1086a17f2134c89cc (patch)
treea1a4d9f7b92412a17ab08f34f04eec45433048b7 /plugins/check_swap.c
parent54fd5d7022ff2d6a59bc52b8869182f3fc77a058 (diff)
downloadmonitoring-plugins-44a321cb8a42d6c0ea2d96a1086a17f2134c89cc.tar.gz
Initial revision
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2 f882894a-f735-0410-b71e-b25c423dba1c
Diffstat (limited to 'plugins/check_swap.c')
-rw-r--r--plugins/check_swap.c325
1 files changed, 325 insertions, 0 deletions
diff --git a/plugins/check_swap.c b/plugins/check_swap.c
new file mode 100644
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1/******************************************************************************
2*
3* CHECK_SWAP.C
4*
5* Program: Process plugin for Nagios
6* License: GPL
7* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
8*
9* $Id$
10*
11******************************************************************************/
12
13#include "common.h"
14#include "popen.h"
15#include "utils.h"
16
17#define PROGNAME "check_swap"
18
19int process_arguments (int argc, char **argv);
20int call_getopt (int argc, char **argv);
21int validate_arguments (void);
22void print_usage (void);
23void print_help (void);
24
25int warn_percent = 200, crit_percent = 200, warn_size = -1, crit_size = -1;
26
27int
28main (int argc, char **argv)
29{
30 int total_swap, used_swap, free_swap, percent_used;
31 int result = STATE_OK;
32 char input_buffer[MAX_INPUT_BUFFER];
33#ifdef HAVE_SWAP
34 char *temp_buffer;
35#endif
36#ifdef HAVE_PROC_MEMINFO
37 FILE *fp;
38#endif
39 char str[32];
40 char *status = NULL;
41
42 if (process_arguments (argc, argv) != OK)
43 usage ("Invalid command arguments supplied\n");
44
45#ifdef HAVE_PROC_MEMINFO
46 fp = fopen (PROC_MEMINFO, "r");
47 status = ssprintf (status, "%s", "Swap used:");
48 while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
49 sscanf (input_buffer, " %s %d %d %d", str, &total_swap, &used_swap,
50 &free_swap);
51 if (strstr (str, "Swap")) {
52 percent_used = 100 * (((float) used_swap) / ((float) total_swap));
53 status = ssprintf
54 (status,
55 "%s %2d%% (%d bytes out of %d)",
56 status, percent_used, used_swap, total_swap);
57 if (percent_used >= crit_percent || free_swap <= crit_size)
58 result = STATE_CRITICAL;
59 else if (percent_used >= warn_percent || free_swap <= warn_size)
60 result = STATE_WARNING;
61 break;
62 }
63 }
64 fclose (fp);
65#else
66#ifdef HAVE_SWAP
67 child_process = spopen (SWAP_COMMAND);
68 if (child_process == NULL) {
69 printf ("Could not open pipe: %s\n", SWAP_COMMAND);
70 return STATE_UNKNOWN;
71 }
72
73 child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
74 if (child_stderr == NULL)
75 printf ("Could not open stderr for %s\n", SWAP_COMMAND);
76
77 sprintf (str, "%s", "");
78 /* read 1st line */
79 fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
80 if (strcmp (SWAP_FORMAT, "") == 0) {
81 temp_buffer = strtok (input_buffer, " \n");
82 while (temp_buffer) {
83 if (strstr (temp_buffer, "blocks"))
84 sprintf (str, "%s %s", str, "%f");
85 else if (strstr (temp_buffer, "free"))
86 sprintf (str, "%s %s", str, "%f");
87 else
88 sprintf (str, "%s %s", str, "%*s");
89 temp_buffer = strtok (NULL, " \n");
90 }
91 }
92
93 status = ssprintf (status, "%s", "Swap used:");
94 while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
95 sscanf (input_buffer, SWAP_FORMAT, &total_swap, &free_swap);
96 used_swap = total_swap - free_swap;
97 percent_used = 100 * ((float) used_swap) / ((float) total_swap);
98 status = ssprintf
99 (status,
100 "%s %2d%% (%d bytes out of %d)",
101 status, percent_used, used_swap, total_swap);
102 if (percent_used >= crit_percent || free_swap <= crit_size)
103 result = STATE_CRITICAL;
104 else if (percent_used >= warn_percent || free_swap <= warn_size)
105 result = STATE_WARNING;
106 }
107
108 /* If we get anything on STDERR, at least set warning */
109 while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
110 result = max (result, STATE_WARNING);
111
112 /* close stderr */
113 (void) fclose (child_stderr);
114
115 /* close the pipe */
116 if (spclose (child_process))
117 result = max (result, STATE_WARNING);
118#endif
119#endif
120
121#ifndef SWAP_COMMAND
122#ifndef SWAP_FILE
123#ifndef HAVE_PROC_MEMINFO
124 return STATE_UNKNOWN;
125#endif
126#endif
127#endif
128
129 if (result == STATE_OK)
130 printf ("Swap ok - %s\n", status);
131 else if (result == STATE_CRITICAL)
132 printf ("CRITICAL - %s\n", status);
133 else if (result == STATE_WARNING)
134 printf ("WARNING - %s\n", status);
135 else if (result == STATE_UNKNOWN)
136 printf ("Unable to read output\n");
137 else {
138 result = STATE_UNKNOWN;
139 printf ("UNKNOWN - %s\n", status);
140 }
141
142 return result;
143}
144
145
146
147
148
149/* process command-line arguments */
150int
151process_arguments (int argc, char **argv)
152{
153 int c;
154
155 if (argc < 2)
156 return ERROR;
157
158 c = 0;
159 while (c += (call_getopt (argc - c, &argv[c]))) {
160 if (argc <= c)
161 break;
162
163 if (warn_percent > 100 && is_intnonneg (argv[c]))
164 warn_percent = atoi (argv[c]);
165 else if (crit_percent > 100 && is_intnonneg (argv[c]))
166 crit_percent = atoi (argv[c]);
167 else if (warn_size < 0 && is_intnonneg (argv[c]))
168 warn_size = atoi (argv[c]);
169 else if (crit_size < 0 && is_intnonneg (argv[c]))
170 crit_size = atoi (argv[c]);
171 }
172
173 return validate_arguments ();
174}
175
176
177
178
179
180int
181call_getopt (int argc, char **argv)
182{
183 int c, i = 0;
184
185#ifdef HAVE_GETOPT_H
186 int option_index = 0;
187 static struct option long_options[] = {
188 {"warning", required_argument, 0, 'w'},
189 {"critical", required_argument, 0, 'c'},
190 {"verbose", no_argument, 0, 'v'},
191 {"version", no_argument, 0, 'V'},
192 {"help", no_argument, 0, 'h'},
193 {0, 0, 0, 0}
194 };
195#endif
196
197 while (1) {
198#ifdef HAVE_GETOPT_H
199 c = getopt_long (argc, argv, "+?Vhc:w:", long_options, &option_index);
200#else
201 c = getopt (argc, argv, "+?Vhc:w:");
202#endif
203
204 i++;
205
206 if (c == -1 || c == EOF)
207 break;
208
209 switch (c) {
210 case 'c':
211 case 'w':
212 i++;
213 }
214
215 switch (c) {
216 case 'w': /* warning time threshold */
217 if (is_intnonneg (optarg)) {
218 warn_size = atoi (optarg);
219 break;
220 }
221 else if (strstr (optarg, ",") &&
222 strstr (optarg, "%") &&
223 sscanf (optarg, "%d,%d%%", &warn_size, &warn_percent) == 2) {
224 break;
225 }
226 else if (strstr (optarg, "%") &&
227 sscanf (optarg, "%d%%", &warn_percent) == 1) {
228 break;
229 }
230 else {
231 usage ("Warning threshold must be integer or percentage!\n");
232 }
233 case 'c': /* critical time threshold */
234 if (is_intnonneg (optarg)) {
235 crit_size = atoi (optarg);
236 break;
237 }
238 else if (strstr (optarg, ",") &&
239 strstr (optarg, "%") &&
240 sscanf (optarg, "%d,%d%%", &crit_size, &crit_percent) == 2) {
241 break;
242 }
243 else if (strstr (optarg, "%") &&
244 sscanf (optarg, "%d%%", &crit_percent) == 1) {
245 break;
246 }
247 else {
248 usage ("Critical threshold must be integer or percentage!\n");
249 }
250 case 'V': /* version */
251 print_revision (my_basename (argv[0]), "$Revision$");
252 exit (STATE_OK);
253 case 'h': /* help */
254 print_help ();
255 exit (STATE_OK);
256 case '?': /* help */
257 usage ("Invalid argument\n");
258 }
259 }
260 return i;
261}
262
263
264
265
266
267int
268validate_arguments (void)
269{
270 if (warn_percent > 100 && crit_percent > 100 && warn_size < 0
271 && crit_size < 0) {
272 return ERROR;
273 }
274 else if (warn_percent > crit_percent) {
275 usage
276 ("Warning percentage should not be less than critical percentage\n");
277 }
278 else if (warn_size < crit_size) {
279 usage
280 ("Warning free space should not be more than critical free space\n");
281 }
282 return OK;
283}
284
285
286
287
288
289void
290print_usage (void)
291{
292 printf
293 ("Usage: check_swap -w <used_percentage>%% -c <used_percentage>%%\n"
294 " check_swap -w <bytes_free> -c <bytes_free>\n"
295 " check_swap (-V|--version)\n" " check_swap (-h|--help)\n");
296}
297
298
299
300
301
302void
303print_help (void)
304{
305 print_revision (PROGNAME, "$Revision$");
306 printf
307 ("Copyright (c) 2000 Karl DeBisschop\n\n"
308 "This plugin will check all of the swap partitions and return an\n"
309 "error if the the avalable swap space is less than specified.\n\n");
310 print_usage ();
311 printf
312 ("\nOptions:\n"
313 " -w, --warning=INTEGER\n"
314 " Exit with WARNING status if less than INTEGER bytes of swap space are free\n"
315 " -w, --warning=PERCENT%%\n"
316 " Exit with WARNING status if more than PERCENT of swap space has been used\n"
317 " -c, --critical=INTEGER\n"
318 " Exit with CRITICAL status if less than INTEGER bytes of swap space are free\n"
319 " -c, --critical=PERCENT%%\n"
320 " Exit with CRITCAL status if more than PERCENT of swap space has been used\n"
321 " -h, --help\n"
322 " Print detailed help screen\n"
323 " -V, --version\n" " Print version information\n\n");
324 support ();
325}