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-rw-r--r--plugins/check_vsz.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/plugins/check_vsz.c b/plugins/check_vsz.c
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+++ b/plugins/check_vsz.c
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+/******************************************************************************
+ *
+ * CHECK_VSZ.C
+ *
+ * Program: Process plugin for Nagios
+ * License: GPL
+ * Copyright (c) 1999,2000 Karl DeBisschop <kdebiss@alum.mit.edu>
+ *
+ * Last Modified: $Date$
+ *
+ * Description:
+ *
+ * This plugin will check for processes whose total image size exceeds
+ * the warning or critical thresholds given on the command line. With
+ * no command_name, everything that shows up on ps is evaluated.
+ * Otherwise, only jobs with the command_name given are examined.
+ * This program is particularly useful if you have to run a piece of
+ * commercial software that has a memory leak. With it you can shut
+ * down and restart the processes whenever the program threatens to
+ * take over your system.
+ *
+ * Modifications:
+ *
+ * 11-18-1999 Karl DeBisschop (kdebiss@alum.mit.edu)
+ * change to getopt, use print_help
+ * 08-18-1999 Ethan Galstad (nagios@nagios.org)
+ * Changed code to use common include file
+ * Changed fclose() to pclose()
+ * 09-09-1999 Ethan Galstad (nagios@nagios.org)
+ * Changed popen()/pclose() to spopen()/spclose()
+ * 11-18-1999 Karl DeBisschop (kdebiss@alum.mit.edu)
+ * set STATE_WARNING of stderr written or nonzero status returned
+ *
+ *****************************************************************************/
+
+#include "common.h"
+#include "popen.h"
+#include "utils.h"
+
+int process_arguments (int argc, char **argv);
+int call_getopt (int argc, char **argv);
+void print_help (char *cmd);
+void print_usage (char *cmd);
+
+int warn = -1;
+int crit = -1;
+char *proc = NULL;
+
+int
+main (int argc, char **argv)
+{
+ int len;
+ int result = STATE_OK;
+ int line = 0;
+ int proc_size = -1;
+ char input_buffer[MAX_INPUT_BUFFER];
+ char proc_name[MAX_INPUT_BUFFER];
+ char *message = NULL;
+
+ if (!process_arguments (argc, argv)) {
+ printf ("%s: failure parsing arguments\n", my_basename (argv[0]));
+ print_help (my_basename (argv[0]));
+ return STATE_UNKNOWN;
+ }
+
+ /* run the command */
+ child_process = spopen (VSZ_COMMAND);
+ if (child_process == NULL) {
+ printf ("Unable to open pipe: %s\n", VSZ_COMMAND);
+ return STATE_UNKNOWN;
+ }
+
+ child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
+ if (child_stderr == NULL)
+ printf ("Could not open stderr for %s\n", VSZ_COMMAND);
+
+ message = malloc ((size_t) 1);
+ message[0] = 0;
+ while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+
+ line++;
+
+ /* skip the first line */
+ if (line == 1)
+ continue;
+
+ if (sscanf (input_buffer, VSZ_FORMAT, &proc_size, proc_name) == 2) {
+ if (proc == NULL) {
+ if (proc_size > warn) {
+ len = strlen (message) + strlen (proc_name) + 23;
+ message = realloc (message, len);
+ if (message == NULL)
+ terminate (STATE_UNKNOWN,
+ "check_vsz: could not malloc message (1)");
+ sprintf (message, "%s %s(%d)", message, proc_name, proc_size);
+ result = max (result, STATE_WARNING);
+ }
+ if (proc_size > crit) {
+ result = STATE_CRITICAL;
+ }
+ }
+ else if (strstr (proc_name, proc)) {
+ len = strlen (message) + 21;
+ message = realloc (message, len);
+ if (message == NULL)
+ terminate (STATE_UNKNOWN,
+ "check_vsz: could not malloc message (2)");
+ sprintf (message, "%s %d", message, proc_size);
+ if (proc_size > warn) {
+ result = max (result, STATE_WARNING);
+ }
+ if (proc_size > crit) {
+ result = STATE_CRITICAL;
+ }
+ }
+ }
+ }
+
+ /* If we get anything on STDERR, at least set warning */
+ while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
+ result = max (result, STATE_WARNING);
+
+ (void) fclose (child_stderr);
+
+ /* close the pipe */
+ if (spclose (child_process))
+ result = max (result, STATE_WARNING);
+
+ if (result == STATE_OK)
+ printf ("ok (all VSZ<%d): %s\n", warn, message);
+ else if (result == STATE_UNKNOWN)
+ printf ("Unable to read output\n");
+ else if (result == STATE_WARNING)
+ printf ("WARNING (VSZ>%d):%s\n", warn, message);
+ else
+ printf ("CRITICAL (VSZ>%d):%s\n", crit, message);
+
+ return result;
+}
+
+
+
+
+int
+process_arguments (int argc, char **argv)
+{
+ int c;
+
+ if (argc < 2)
+ return ERROR;
+
+ c = 0;
+ while (c += (call_getopt (argc - c, &argv[c]))) {
+ if (argc <= c)
+ break;
+ if (warn == -1) {
+ if (!is_intnonneg (argv[c])) {
+ printf ("%s: critical threshold must be an integer: %s\n",
+ my_basename (argv[0]), argv[c]);
+ print_usage (my_basename (argv[0]));
+ exit (STATE_UNKNOWN);
+ }
+ warn = atoi (argv[c]);
+ }
+ else if (crit == -1) {
+ if (!is_intnonneg (argv[c])) {
+ printf ("%s: critical threshold must be an integer: %s\n",
+ my_basename (argv[0]), argv[c]);
+ print_usage (my_basename (argv[0]));
+ exit (STATE_UNKNOWN);
+ }
+ crit = atoi (argv[c]);
+ }
+ else if (proc == NULL) {
+ proc = malloc (strlen (argv[c]) + 1);
+ if (proc == NULL)
+ terminate (STATE_UNKNOWN,
+ "check_vsz: failed malloc of proc in process_arguments");
+ strcpy (proc, argv[c]);
+ }
+ }
+ return c;
+}
+
+int
+call_getopt (int argc, char **argv)
+{
+ int c, i = 1;
+
+#ifdef HAVE_GETOPT_H
+ int option_index = 0;
+ static struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"version", no_argument, 0, 'V'},
+ {"critical", required_argument, 0, 'c'},
+ {"warning", required_argument, 0, 'w'},
+ {"command", required_argument, 0, 'C'},
+ {0, 0, 0, 0}
+ };
+#endif
+
+ while (1) {
+#ifdef HAVE_GETOPT_H
+ c = getopt_long (argc, argv, "+hVc:w:C:", long_options, &option_index);
+#else
+ c = getopt (argc, argv, "+hVc:w:C:");
+#endif
+ if (c == EOF)
+ break;
+
+ i++;
+ switch (c) {
+ case 'c':
+ case 'w':
+ case 'C':
+ i++;
+ }
+
+ switch (c) {
+ case '?': /* help */
+ printf ("%s: Unknown argument: %s\n\n", my_basename (argv[0]), optarg);
+ print_usage (my_basename (argv[0]));
+ exit (STATE_UNKNOWN);
+ case 'h': /* help */
+ print_help (my_basename (argv[0]));
+ exit (STATE_OK);
+ case 'V': /* version */
+ print_revision (my_basename (argv[0]), "$Revision$");
+ exit (STATE_OK);
+ case 'c': /* critical threshold */
+ if (!is_intnonneg (optarg)) {
+ printf ("%s: critical threshold must be an integer: %s\n",
+ my_basename (argv[0]), optarg);
+ print_usage (my_basename (argv[0]));
+ exit (STATE_UNKNOWN);
+ }
+ crit = atoi (optarg);
+ break;
+ case 'w': /* warning threshold */
+ if (!is_intnonneg (optarg)) {
+ printf ("%s: warning threshold must be an integer: %s\n",
+ my_basename (argv[0]), optarg);
+ print_usage (my_basename (argv[0]));
+ exit (STATE_UNKNOWN);
+ }
+ warn = atoi (optarg);
+ break;
+ case 'C': /* command name */
+ proc = malloc (strlen (optarg) + 1);
+ if (proc == NULL)
+ terminate (STATE_UNKNOWN,
+ "check_vsz: failed malloc of proc in process_arguments");
+ strcpy (proc, optarg);
+ break;
+ }
+ }
+ return i;
+}
+
+void
+print_usage (char *cmd)
+{
+ printf ("Usage: %s -w <wsize> -c <csize> [-C command]\n"
+ " %s --help\n" " %s --version\n", cmd, cmd, cmd);
+}
+
+void
+print_help (char *cmd)
+{
+ print_revision ("check_vsz", "$Revision$");
+ printf
+ ("Copyright (c) 2000 Karl DeBisschop <kdebiss@alum.mit.edu>\n\n"
+ "This plugin checks the image size of a running program and returns an\n"
+ "error if the number is above either of the thresholds given.\n\n");
+ print_usage (cmd);
+ printf
+ ("\nOptions:\n"
+ " -h, --help\n"
+ " Print detailed help\n"
+ " -V, --version\n"
+ " Print version numbers and license information\n"
+ " -w, --warning=INTEGER\n"
+ " Program image size necessary to cause a WARNING state\n"
+ " -c, --critical=INTEGER\n"
+ " Program image size necessary to cause a CRITICAL state\n"
+ " -C, --command=STRING\n" " Program to search for [optional]\n");
+}
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