/****************************************************************************** * * CHECK_VSZ.C * * Program: Process plugin for Nagios * License: GPL * Copyright (c) 1999,2000 Karl DeBisschop * * 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 * *****************************************************************************/ const char *progname = "check_vsz"; #define REVISION "$Revision$" #define COPYRIGHT "1999-2002" #define AUTHOR "Karl DeBisschop" #define EMAIL "karl@debisschop.net" #define SUMMARY "Check the image size of a running program.\n" #include "common.h" #include "popen.h" #include "utils.h" int process_arguments (int argc, char **argv); void print_help (const char *cmd); void print_usage (const 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 = ""; if (process_arguments (argc, argv) == ERROR) { printf ("%s: failure parsing arguments\n", progname); print_help (progname); 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); 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) { asprintf (&message, "%s %s(%d)", message, proc_name, proc_size); result = max_state (result, STATE_WARNING); } if (proc_size > crit) { result = STATE_CRITICAL; } } else if (strstr (proc_name, proc)) { asprintf (&message, "%s %d", message, proc_size); if (proc_size > warn) { result = max_state (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_state (result, STATE_WARNING); (void) fclose (child_stderr); /* close the pipe */ if (spclose (child_process)) result = max_state (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; #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 if (argc < 2) return ERROR; 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; switch (c) { case '?': /* help */ print_usage (progname); exit (STATE_UNKNOWN); case 'h': /* help */ print_help (progname); exit (STATE_OK); case 'V': /* version */ print_revision (progname, "$Revision$"); exit (STATE_OK); case 'c': /* critical threshold */ if (!is_intnonneg (optarg)) { printf ("%s: critical threshold must be an integer: %s\n", progname, optarg); print_usage (progname); 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", progname, optarg); print_usage (progname); exit (STATE_UNKNOWN); } warn = atoi (optarg); break; case 'C': /* command name */ proc = optarg; break; } } c = optind; if (warn == -1) { if (!is_intnonneg (argv[c])) { printf ("%s: critical threshold must be an integer: %s\n", progname, argv[c]); print_usage (progname); exit (STATE_UNKNOWN); } warn = atoi (argv[c++]); } if (crit == -1) { if (!is_intnonneg (argv[c])) { printf ("%s: critical threshold must be an integer: %s\n", progname, argv[c]); print_usage (progname); exit (STATE_UNKNOWN); } crit = atoi (argv[c++]); } if (proc == NULL) proc = argv[c]; return c; } void print_usage (const char *cmd) { printf ("Usage: %s -w -c [-C command]\n" " %s --help\n" " %s --version\n", cmd, cmd, cmd); } void print_help (const char *cmd) { print_revision ("check_vsz", "$Revision$"); printf ("Copyright (c) 2000 Karl DeBisschop \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"); }