1 /******************************************************************************
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; either version 2 of the License, or
6 (at your option) any later version.
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 ******************************************************************************/
19 const char *progname = "check_load";
20 const char *revision = "$Revision$";
21 const char *copyright = "1999-2003";
22 const char *email = "nagiosplug-devel@lists.sourceforge.net";
24 #include "common.h"
25 #include "utils.h"
26 #include "popen.h"
28 #ifdef HAVE_SYS_LOADAVG_H
29 #include <sys/loadavg.h>
30 #endif
32 /* needed for compilation under NetBSD, as suggested by Andy Doran */
33 #ifndef LOADAVG_1MIN
34 #define LOADAVG_1MIN 0
35 #define LOADAVG_5MIN 1
36 #define LOADAVG_15MIN 2
37 #endif /* !defined LOADAVG_1MIN */
40 int process_arguments (int argc, char **argv);
41 int validate_arguments (void);
42 void print_help (void);
43 void print_usage (void);
45 float wload1 = -1, wload5 = -1, wload15 = -1;
46 float cload1 = -1, cload5 = -1, cload15 = -1;
48 char *status_line = "";
54 \f
55 int
56 main (int argc, char **argv)
57 {
58 #if HAVE_GETLOADAVG==1
59 int result;
60 double la[3] = { 0.0, 0.0, 0.0 }; /* NetBSD complains about unitialized arrays */
61 #else
62 # if HAVE_PROC_LOADAVG==1
63 FILE *fp;
64 char input_buffer[MAX_INPUT_BUFFER];
65 char *tmp_ptr;
66 # else
67 int result;
68 char input_buffer[MAX_INPUT_BUFFER];
69 # endif
70 #endif
72 float la1, la5, la15;
74 if (process_arguments (argc, argv) == ERROR)
75 usage ("\n");
77 #if HAVE_GETLOADAVG==1
78 result = getloadavg (la, 3);
79 if (result == -1)
80 return STATE_UNKNOWN;
81 la1 = la[LOADAVG_1MIN];
82 la5 = la[LOADAVG_5MIN];
83 la15 = la[LOADAVG_15MIN];
84 #else
85 # if HAVE_PROC_LOADAVG==1
86 fp = fopen (PROC_LOADAVG, "r");
87 if (fp == NULL) {
88 printf (_("Error opening %s\n"), PROC_LOADAVG);
89 return STATE_UNKNOWN;
90 }
92 la1 = la5 = la15 = -1;
94 while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
95 tmp_ptr = strtok (input_buffer, " ");
96 la1 = atof (tmp_ptr);
97 tmp_ptr = strtok (NULL, " ");
98 la5 = atof (tmp_ptr);
99 tmp_ptr = strtok (NULL, " ");
100 la15 = atof (tmp_ptr);
101 }
103 fclose (fp);
104 # else
105 child_process = spopen (PATH_TO_UPTIME);
106 if (child_process == NULL) {
107 printf (_("Error opening %s\n"), PATH_TO_UPTIME);
108 return STATE_UNKNOWN;
109 }
110 child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
111 if (child_stderr == NULL) {
112 printf (_("Could not open stderr for %s\n"), PATH_TO_UPTIME);
113 }
114 fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
115 sscanf (input_buffer, "%*[^l]load average: %f, %f, %f"), &la1, &la5, &la15);
117 result = spclose (child_process);
118 if (result) {
119 printf (_("Error code %d returned in %s\n"), result, PATH_TO_UPTIME);
120 return STATE_UNKNOWN;
121 }
122 # endif
123 #endif
125 if ((la1 == -1) || (la5 == -1) || (la15 == -1)) {
126 #if HAVE_GETLOADAVG==1
127 printf (_("Error in getloadavg()\n"));
128 #else
129 # if HAVE_PROC_LOADAVG==1
130 printf (_("Error processing %s\n"), PROC_LOADAVG);
131 # else
132 printf (_("Error processing %s\n"), PATH_TO_UPTIME);
133 # endif
134 #endif
135 return STATE_UNKNOWN;
136 }
137 asprintf(&status_line, _("load average: %.2f, %.2f, %.2f"), la1, la5, la15);
138 if ((la1 >= cload1) || (la5 >= cload5) || (la15 >= cload15)) {
139 printf(_("CRITICAL - %s\n"), status_line);
140 return STATE_CRITICAL;
141 }
142 if ((la1 >= wload1) || (la5 >= wload5) || (la15 >= wload15)) {
143 printf (_("WARNING - %s\n"), status_line);
144 return STATE_WARNING;
145 }
146 printf (_("OK - %s\n"), status_line);
147 return STATE_OK;
148 }
154 \f
155 /* process command-line arguments */
156 int
157 process_arguments (int argc, char **argv)
158 {
159 int c = 0;
161 int option_index = 0;
162 static struct option long_options[] = {
163 {"warning", required_argument, 0, 'w'},
164 {"critical", required_argument, 0, 'c'},
165 {"version", no_argument, 0, 'V'},
166 {"help", no_argument, 0, 'h'},
167 {0, 0, 0, 0}
168 };
170 if (argc < 2)
171 return ERROR;
173 while (1) {
174 c = getopt_long (argc, argv, "Vhc:w:", long_options, &option_index);
176 if (c == -1 || c == EOF)
177 break;
179 switch (c) {
180 case 'w': /* warning time threshold */
181 if (is_intnonneg (optarg)) {
182 wload1 = atof (optarg);
183 wload5 = atof (optarg);
184 wload15 = atof (optarg);
185 break;
186 }
187 else if (strstr (optarg, ",") &&
188 sscanf (optarg, "%f,%f,%f", &wload1, &wload5, &wload15) == 3)
189 break;
190 else if (strstr (optarg, ":") &&
191 sscanf (optarg, "%f:%f:%f", &wload1, &wload5, &wload15) == 3)
192 break;
193 else
194 usage (_("Warning threshold must be float or float triplet!\n"));
195 break;
196 case 'c': /* critical time threshold */
197 if (is_intnonneg (optarg)) {
198 cload1 = atof (optarg);
199 cload5 = atof (optarg);
200 cload15 = atof (optarg);
201 break;
202 }
203 else if (strstr (optarg, ",") &&
204 sscanf (optarg, "%f,%f,%f", &cload1, &cload5, &cload15) == 3)
205 break;
206 else if (strstr (optarg, ":") &&
207 sscanf (optarg, "%f:%f:%f", &cload1, &cload5, &cload15) == 3)
208 break;
209 else
210 usage (_("Critical threshold must be float or float triplet!\n"));
211 break;
212 case 'V': /* version */
213 print_revision (progname, "$Revision$");
214 exit (STATE_OK);
215 case 'h': /* help */
216 print_help ();
217 exit (STATE_OK);
218 case '?': /* help */
219 usage (_("Invalid argument\n"));
220 }
221 }
223 c = optind;
224 if (c == argc)
225 return validate_arguments ();
226 if (wload1 < 0 && is_nonnegative (argv[c]))
227 wload1 = atof (argv[c++]);
229 if (c == argc)
230 return validate_arguments ();
231 if (cload1 < 0 && is_nonnegative (argv[c]))
232 cload1 = atof (argv[c++]);
234 if (c == argc)
235 return validate_arguments ();
236 if (wload5 < 0 && is_nonnegative (argv[c]))
237 wload5 = atof (argv[c++]);
239 if (c == argc)
240 return validate_arguments ();
241 if (cload5 < 0 && is_nonnegative (argv[c]))
242 cload5 = atof (argv[c++]);
244 if (c == argc)
245 return validate_arguments ();
246 if (wload15 < 0 && is_nonnegative (argv[c]))
247 wload15 = atof (argv[c++]);
249 if (c == argc)
250 return validate_arguments ();
251 if (cload15 < 0 && is_nonnegative (argv[c]))
252 cload15 = atof (argv[c++]);
254 return validate_arguments ();
255 }
261 int
262 validate_arguments (void)
263 {
264 if (wload1 < 0)
265 usage (_("Warning threshold for 1-minute load average is not specified\n"));
266 if (wload5 < 0)
267 usage (_("Warning threshold for 5-minute load average is not specified\n"));
268 if (wload15 < 0)
269 usage (_("Warning threshold for 15-minute load average is not specified\n"));
270 if (cload1 < 0)
271 usage (_("Critical threshold for 1-minute load average is not specified\n"));
272 if (cload5 < 0)
273 usage (_("Critical threshold for 5-minute load average is not specified\n"));
274 if (cload15 < 0)
275 usage (_("Critical threshold for 15-minute load average is not specified\n"));
276 if (wload1 > cload1)
277 usage (_("Parameter inconsistency: 1-minute \"warning load\" greater than \"critical load\".\n"));
278 if (wload5 > cload5)
279 usage (_("Parameter inconsistency: 5-minute \"warning load\" greater than \"critical load\".\n"));
280 if (wload15 > cload15)
281 usage (_("Parameter inconsistency: 15-minute \"warning load\" greater than \"critical load\".\n"));
282 return OK;
283 }
289 \f
290 void
291 print_help (void)
292 {
293 print_revision (progname, revision);
295 printf (_("Copyright (c) 1999 Felipe Gustavo de Almeida <galmeida@linux.ime.usp.br>\n"));
296 printf (_(COPYRIGHT), copyright, email);
298 printf (_("This plugin tests the current system load average.\n\n"));
300 print_usage ();
302 printf (_(UT_HELP_VRSN));
304 printf (_("\
305 -w, --warning=WLOAD1,WLOAD5,WLOAD15\n\
306 Exit with WARNING status if load average exceeds WLOADn\n\
307 -c, --critical=CLOAD1,CLOAD5,CLOAD15\n\
308 Exit with CRITICAL status if load average exceed CLOADn\n\n\
309 the load average format is the same used by \"uptime\" and \"w\"\n\n"));
311 printf (_(UT_SUPPORT));
312 }
314 void
315 print_usage (void)
316 {
317 printf (_("Usage: %s -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15\n"),
318 progname);
319 printf (_(UT_HLP_VRS), progname, progname);
320 }