Adding upstream version 2.3.5.upstream/2.3.5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 610 insertions, 0 deletions

diff --git a/plugins/check_swap.c b/plugins/check_swap.c
new file mode 100644
index 0000000..cd965e3
--- /dev/null
+++ b/plugins/check_swap.c
@@ -0,0 +1,610 @@
+/*****************************************************************************
+*
+* Monitoring check_swap plugin
+*
+* License: GPL
+* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
+* Copyright (c) 2000-2007 Monitoring Plugins Development Team
+*
+* Description:
+*
+* This file contains the check_swap plugin
+*
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*
+*****************************************************************************/
+
+const char *progname = "check_swap";
+const char *copyright = "2000-2007";
+const char *email = "devel@monitoring-plugins.org";
+
+#include "common.h"
+#include "popen.h"
+#include "utils.h"
+
+#ifdef HAVE_DECL_SWAPCTL
+# ifdef HAVE_SYS_PARAM_H
+#  include <sys/param.h>
+# endif
+# ifdef HAVE_SYS_SWAP_H
+#  include <sys/swap.h>
+# endif
+# ifdef HAVE_SYS_STAT_H
+#  include <sys/stat.h>
+# endif
+#endif
+
+#ifndef SWAP_CONVERSION
+# define SWAP_CONVERSION 1
+#endif
+
+typedef struct {
+	int is_percentage;
+	uint64_t value;
+} threshold_t;
+
+int check_swap (float free_swap_mb, float total_swap_mb);
+int process_arguments (int argc, char **argv);
+int validate_arguments (void);
+void print_usage (void);
+void print_help (void);
+
+threshold_t warn;
+threshold_t crit;
+int verbose;
+int allswaps;
+int no_swap_state = STATE_CRITICAL;
+
+int
+main (int argc, char **argv)
+{
+	unsigned int percent_used, percent;
+	uint64_t total_swap_mb = 0, used_swap_mb = 0, free_swap_mb = 0;
+	uint64_t dsktotal_mb = 0, dskused_mb = 0, dskfree_mb = 0;
+	uint64_t tmp_KB = 0;
+	int result = STATE_UNKNOWN;
+	char input_buffer[MAX_INPUT_BUFFER];
+#ifdef HAVE_PROC_MEMINFO
+	FILE *fp;
+#else
+	int conv_factor = SWAP_CONVERSION;
+# ifdef HAVE_SWAP
+	char *temp_buffer;
+	char *swap_command;
+	char *swap_format;
+# else
+#  ifdef HAVE_DECL_SWAPCTL
+	int i=0, nswaps=0, swapctl_res=0;
+#   ifdef CHECK_SWAP_SWAPCTL_SVR4
+	swaptbl_t *tbl=NULL;
+	swapent_t *ent=NULL;
+#   else
+#    ifdef CHECK_SWAP_SWAPCTL_BSD
+	struct swapent *ent;
+#    endif /* CHECK_SWAP_SWAPCTL_BSD */
+#   endif /* CHECK_SWAP_SWAPCTL_SVR4 */
+#  endif /* HAVE_DECL_SWAPCTL */
+# endif
+#endif
+	char str[32];
+	char *status;
+
+	setlocale (LC_ALL, "");
+	bindtextdomain (PACKAGE, LOCALEDIR);
+	textdomain (PACKAGE);
+
+	status = strdup ("");
+
+	/* Parse extra opts if any */
+	argv=np_extra_opts (&argc, argv, progname);
+
+	if (process_arguments (argc, argv) == ERROR)
+		usage4 (_("Could not parse arguments"));
+
+#ifdef HAVE_PROC_MEMINFO
+	if (verbose >= 3) {
+		printf("Reading PROC_MEMINFO at %s\n", PROC_MEMINFO);
+	}
+	fp = fopen (PROC_MEMINFO, "r");
+	while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
+		/*
+		 * The following sscanf call looks for a line looking like: "Swap: 123 123 123"
+		 * On which kind of system this format exists, I can not say, but I wanted to
+		 * document this for people who are not adapt with sscanf anymore, like me
+		 */
+		if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %lu %lu %lu", &dsktotal_mb, &dskused_mb, &dskfree_mb) == 3) {
+			dsktotal_mb = dsktotal_mb / (1024 * 1024);	/* Apply conversion */
+			dskused_mb = dskused_mb / (1024 * 1024);
+			dskfree_mb = dskfree_mb / (1024 * 1024);
+			total_swap_mb += dsktotal_mb;
+			used_swap_mb += dskused_mb;
+			free_swap_mb += dskfree_mb;
+			if (allswaps) {
+				if (dsktotal_mb == 0)
+					percent=100.0;
+				else
+					percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+				result = max_state (result, check_swap (dskfree_mb, dsktotal_mb));
+				if (verbose)
+					xasprintf (&status, "%s [%lu (%d%%)]", status, dskfree_mb, 100 - percent);
+			}
+		}
+
+		/*
+		 * The following sscanf call looks for lines looking like: "SwapTotal: 123" and "SwapFree: 123"
+		 * This format exists at least on Debian Linux with a 5.* kernel
+		 */
+		else if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%[TotalFreCchd]%*[:] %lu %*[k]%*[B]", str, &tmp_KB)) {
+			if (verbose >= 3) {
+				printf("Got %s with %lu\n", str, tmp_KB);
+			}
+			/* I think this part is always in Kb, so convert to mb */
+			if (strcmp ("Total", str) == 0) {
+				dsktotal_mb = tmp_KB / 1024;
+			}
+			else if (strcmp ("Free", str) == 0) {
+				dskfree_mb = dskfree_mb + tmp_KB / 1024;
+			}
+			else if (strcmp ("Cached", str) == 0) {
+				dskfree_mb = dskfree_mb + tmp_KB / 1024;
+			}
+		}
+	}
+	fclose(fp);
+	dskused_mb = dsktotal_mb - dskfree_mb;
+	total_swap_mb = dsktotal_mb;
+	used_swap_mb = dskused_mb;
+	free_swap_mb = dskfree_mb;
+#else
+# ifdef HAVE_SWAP
+	xasprintf(&swap_command, "%s", SWAP_COMMAND);
+	xasprintf(&swap_format, "%s", SWAP_FORMAT);
+
+/* These override the command used if a summary (and thus ! allswaps) is required */
+/* The summary flag returns more accurate information about swap usage on these OSes */
+#  ifdef _AIX
+	if (!allswaps) {
+		xasprintf(&swap_command, "%s", "/usr/sbin/lsps -s");
+		xasprintf(&swap_format, "%s", "%lu%*s %lu");
+		conv_factor = 1;
+	}
+#  endif
+
+	if (verbose >= 2)
+		printf (_("Command: %s\n"), swap_command);
+	if (verbose >= 3)
+		printf (_("Format: %s\n"), swap_format);
+
+	child_process = spopen (swap_command);
+	if (child_process == NULL) {
+		printf (_("Could not open pipe: %s\n"), swap_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"), swap_command);
+
+	sprintf (str, "%s", "");
+	/* read 1st line */
+	fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
+	if (strcmp (swap_format, "") == 0) {
+		temp_buffer = strtok (input_buffer, " \n");
+		while (temp_buffer) {
+			if (strstr (temp_buffer, "blocks"))
+				sprintf (str, "%s %s", str, "%lu");
+			else if (strstr (temp_buffer, "dskfree"))
+				sprintf (str, "%s %s", str, "%lu");
+			else
+				sprintf (str, "%s %s", str, "%*s");
+			temp_buffer = strtok (NULL, " \n");
+		}
+	}
+
+/* If different swap command is used for summary switch, need to read format differently */
+#  ifdef _AIX
+	if (!allswaps) {
+		fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_process);	/* Ignore first line */
+		sscanf (input_buffer, swap_format, &total_swap_mb, &used_swap_mb);
+		free_swap_mb = total_swap_mb * (100 - used_swap_mb) /100;
+		used_swap_mb = total_swap_mb - free_swap_mb;
+		if (verbose >= 3)
+			printf (_("total=%.0f, used=%.0f, free=%.0f\n"), total_swap_mb, used_swap_mb, free_swap_mb);
+	} else {
+#  endif
+		while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+			sscanf (input_buffer, swap_format, &dsktotal_mb, &dskfree_mb);
+
+			dsktotal_mb = dsktotal_mb / conv_factor;
+			/* AIX lists percent used, so this converts to dskfree in MBs */
+#  ifdef _AIX
+			dskfree_mb = dsktotal_mb * (100 - dskfree_mb) / 100;
+#  else
+			dskfree_mb = dskfree_mb / conv_factor;
+#  endif
+			if (verbose >= 3)
+				printf (_("total=%.0f, free=%.0f\n"), dsktotal_mb, dskfree_mb);
+
+			dskused_mb = dsktotal_mb - dskfree_mb;
+			total_swap_mb += dsktotal_mb;
+			used_swap_mb += dskused_mb;
+			free_swap_mb += dskfree_mb;
+			if (allswaps) {
+				percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+				result = max_state (result, check_swap (dskfree_mb, dsktotal_mb));
+				if (verbose)
+					xasprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
+			}
+		}
+#  ifdef _AIX
+	}
+#  endif
+
+	/* 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);
+
+	/* close stderr */
+	(void) fclose (child_stderr);
+
+	/* close the pipe */
+	if (spclose (child_process))
+		result = max_state (result, STATE_WARNING);
+# else
+#  ifdef CHECK_SWAP_SWAPCTL_SVR4
+
+	/* get the number of active swap devices */
+	if((nswaps=swapctl(SC_GETNSWP, NULL))== -1)
+		die(STATE_UNKNOWN, _("Error getting swap devices\n") );
+
+	if(nswaps == 0)
+		die(STATE_OK, _("SWAP OK: No swap devices defined\n"));
+
+	if(verbose >= 3)
+		printf("Found %d swap device(s)\n", nswaps);
+
+	/* initialize swap table + entries */
+	tbl=(swaptbl_t*)malloc(sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
+
+	if(tbl==NULL)
+		die(STATE_UNKNOWN, _("malloc() failed!\n"));
+
+	memset(tbl, 0, sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
+	tbl->swt_n=nswaps;
+	for(i=0;i<nswaps;i++){
+		if((tbl->swt_ent[i].ste_path=(char*)malloc(sizeof(char)*MAXPATHLEN)) == NULL)
+			die(STATE_UNKNOWN, _("malloc() failed!\n"));
+	}
+
+	/* and now, tally 'em up */
+	swapctl_res=swapctl(SC_LIST, tbl);
+	if(swapctl_res < 0){
+		perror(_("swapctl failed: "));
+		die(STATE_UNKNOWN, _("Error in swapctl call\n"));
+	}
+
+	for(i=0;i<nswaps;i++){
+		dsktotal_mb = (float) tbl->swt_ent[i].ste_pages / SWAP_CONVERSION;
+		dskfree_mb = (float) tbl->swt_ent[i].ste_free /  SWAP_CONVERSION;
+		dskused_mb = ( dsktotal_mb - dskfree_mb );
+
+		if (verbose >= 3)
+			printf ("dsktotal_mb=%.0f dskfree_mb=%.0f dskused_mb=%.0f\n", dsktotal_mb, dskfree_mb, dskused_mb);
+
+		if(allswaps && dsktotal_mb > 0){
+			percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+			result = max_state (result, check_swap (dskfree_mb, dsktotal_mb));
+			if (verbose) {
+				xasprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
+			}
+		}
+
+		total_swap_mb += dsktotal_mb;
+		free_swap_mb += dskfree_mb;
+		used_swap_mb += dskused_mb;
+	}
+
+	/* and clean up after ourselves */
+	for(i=0;i<nswaps;i++){
+		free(tbl->swt_ent[i].ste_path);
+	}
+	free(tbl);
+#  else
+#   ifdef CHECK_SWAP_SWAPCTL_BSD
+
+	/* get the number of active swap devices */
+	nswaps=swapctl(SWAP_NSWAP, NULL, 0);
+
+	/* initialize swap table + entries */
+	ent=(struct swapent*)malloc(sizeof(struct swapent)*nswaps);
+
+	/* and now, tally 'em up */
+	swapctl_res=swapctl(SWAP_STATS, ent, nswaps);
+	if(swapctl_res < 0){
+		perror(_("swapctl failed: "));
+		die(STATE_UNKNOWN, _("Error in swapctl call\n"));
+	}
+
+	for(i=0;i<nswaps;i++){
+		dsktotal_mb = (float) ent[i].se_nblks / conv_factor;
+		dskused_mb = (float) ent[i].se_inuse / conv_factor;
+		dskfree_mb = ( dsktotal_mb - dskused_mb );
+
+		if(allswaps && dsktotal_mb > 0){
+			percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+			result = max_state (result, check_swap(dskfree_mb, dsktotal_mb));
+			if (verbose) {
+				xasprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
+			}
+		}
+
+		total_swap_mb += dsktotal_mb;
+		free_swap_mb += dskfree_mb;
+		used_swap_mb += dskused_mb;
+	}
+
+	/* and clean up after ourselves */
+	free(ent);
+
+#   endif /* CHECK_SWAP_SWAPCTL_BSD */
+#  endif /* CHECK_SWAP_SWAPCTL_SVR4 */
+# endif /* HAVE_SWAP */
+#endif /* HAVE_PROC_MEMINFO */
+
+	/* if total_swap_mb == 0, let's not divide by 0 */
+	if(total_swap_mb) {
+		percent_used = 100 * ((double) used_swap_mb) / ((double) total_swap_mb);
+	} else {
+		percent_used = 100;
+		status = "- Swap is either disabled, not present, or of zero size. ";
+	}
+
+	result = max_state (result, check_swap(free_swap_mb, total_swap_mb));
+	printf (_("SWAP %s - %d%% free (%dMB out of %dMB) %s|"),
+			state_text (result),
+			(100 - percent_used), (int) free_swap_mb, (int) total_swap_mb, status);
+
+	uint64_t warn_print = warn.value;
+	if (warn.is_percentage) warn_print = warn.value * (total_swap_mb *1024 *1024/100);
+	uint64_t crit_print = crit.value;
+	if (crit.is_percentage) crit_print = crit.value * (total_swap_mb *1024 *1024/100);
+
+	puts (perfdata_uint64 ("swap", free_swap_mb *1024 *1024, "B",
+	                TRUE, warn_print,
+	                TRUE, crit_print,
+	                TRUE, 0,
+	                TRUE, (long) total_swap_mb * 1024 * 1024));
+
+	return result;
+}
+
+
+int
+check_swap(float free_swap_mb, float total_swap_mb)
+{
+
+	if (!total_swap_mb) return no_swap_state;
+
+	uint64_t free_swap = free_swap_mb * (1024 * 1024);		/* Convert back to bytes as warn and crit specified in bytes */
+
+	if (!crit.is_percentage && crit.value >= free_swap) return STATE_CRITICAL;
+	if (!warn.is_percentage && warn.value >= free_swap) return STATE_WARNING;
+
+
+	uint64_t usage_percentage = ((total_swap_mb - free_swap_mb) / total_swap_mb) * 100;
+
+	if (crit.is_percentage &&
+			crit.value != 0 &&
+			usage_percentage >= (100 - crit.value))
+	{
+			return STATE_CRITICAL;
+	}
+
+	if (warn.is_percentage &&
+			warn.value != 0 &&
+			usage_percentage >= (100 - warn.value))
+	{
+			return STATE_WARNING;
+	}
+
+	return STATE_OK;
+}
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+	int c = 0;  /* option character */
+
+	int option = 0;
+	static struct option longopts[] = {
+		{"warning", required_argument, 0, 'w'},
+		{"critical", required_argument, 0, 'c'},
+		{"allswaps", no_argument, 0, 'a'},
+		{"no-swap", required_argument, 0, 'n'},
+		{"verbose", no_argument, 0, 'v'},
+		{"version", no_argument, 0, 'V'},
+		{"help", no_argument, 0, 'h'},
+		{0, 0, 0, 0}
+	};
+
+	if (argc < 2)
+		return ERROR;
+
+	while (1) {
+		c = getopt_long (argc, argv, "+?Vvhac:w:n:", longopts, &option);
+
+		if (c == -1 || c == EOF)
+			break;
+
+		switch (c) {
+		case 'w': /* warning size threshold */
+			{
+				/*
+				 * We expect either a positive integer value without a unit, which means
+				 * the unit is Bytes or a positive integer value and a percentage sign (%),
+				 * which means the value must be with 0 and 100 and is relative to the total swap
+				 */
+				size_t length;
+				length = strlen(optarg);
+
+				if (optarg[length - 1] == '%') {
+					/* It's percentage */
+					warn.is_percentage = 1;
+					optarg[length - 1] = '\0';
+					if (is_uint64(optarg, &warn.value)) {
+						if (warn.value > 100) {
+							usage4 (_("Warning threshold percentage must be <= 100!"));
+						}
+					}
+					break;
+				} else {
+					/* It's Bytes */
+					warn.is_percentage = 0;
+					if (is_uint64(optarg, &warn.value)) {
+						break;
+					} else {
+						usage4 (_("Warning threshold be positive integer or percentage!"));
+					}
+				}
+			}
+		case 'c': /* critical size threshold */
+			{
+				/*
+				 * We expect either a positive integer value without a unit, which means
+				 * the unit is Bytes or a positive integer value and a percentage sign (%),
+				 * which means the value must be with 0 and 100 and is relative to the total swap
+				 */
+				size_t length;
+				length = strlen(optarg);
+
+				if (optarg[length - 1] == '%') {
+					/* It's percentage */
+					crit.is_percentage = 1;
+					optarg[length - 1] = '\0';
+					if (is_uint64(optarg, &crit.value)) {
+						if (crit.value> 100) {
+							usage4 (_("Critical threshold percentage must be <= 100!"));
+						}
+					}
+					break;
+				} else {
+					/* It's Bytes */
+					crit.is_percentage = 0;
+					if (is_uint64(optarg, &crit.value)) {
+						break;
+					} else {
+						usage4 (_("Critical threshold be positive integer or percentage!"));
+					}
+				}
+			  }
+		case 'a':									/* all swap */
+			allswaps = TRUE;
+			break;
+		case 'n':
+			if ((no_swap_state = mp_translate_state(optarg)) == ERROR) {
+				usage4 (_("no-swap result must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3)."));
+			}
+			break;
+		case 'v':									/* verbose */
+			verbose++;
+			break;
+		case 'V':									/* version */
+			print_revision (progname, NP_VERSION);
+			exit (STATE_UNKNOWN);
+		case 'h':									/* help */
+			print_help ();
+			exit (STATE_UNKNOWN);
+		case '?':									/* error */
+			usage5 ();
+		}
+	}
+
+	c = optind;
+	if (c == argc)
+		return validate_arguments ();
+
+	return validate_arguments ();
+}
+
+
+
+int
+validate_arguments (void)
+{
+	if (warn.value == 0 && crit.value == 0) {
+		return ERROR;
+	}
+	else if ((warn.is_percentage == crit.is_percentage) && (warn.value < crit.value)) {
+		/* This is NOT triggered if warn and crit are different units, e.g warn is percentage
+		 * and crit is absolute. We cannot determine the condition at this point since we
+		 * dont know the value of total swap yet
+		 */
+		usage4(_("Warning should be more than critical"));
+	}
+	return OK;
+}
+
+
+
+void
+print_help (void)
+{
+	print_revision (progname, NP_VERSION);
+
+	printf (_(COPYRIGHT), copyright, email);
+
+	printf ("%s\n", _("Check swap space on local machine."));
+
+	printf ("\n\n");
+
+	print_usage ();
+
+	printf (UT_HELP_VRSN);
+	printf (UT_EXTRA_OPTS);
+
+	printf (" %s\n", "-w, --warning=INTEGER");
+	printf ("    %s\n", _("Exit with WARNING status if less than INTEGER bytes of swap space are free"));
+	printf (" %s\n", "-w, --warning=PERCENT%");
+	printf ("    %s\n", _("Exit with WARNING status if less than PERCENT of swap space is free"));
+	printf (" %s\n", "-c, --critical=INTEGER");
+	printf ("    %s\n", _("Exit with CRITICAL status if less than INTEGER bytes of swap space are free"));
+	printf (" %s\n", "-c, --critical=PERCENT%");
+	printf ("    %s\n", _("Exit with CRITICAL status if less than PERCENT of swap space is free"));
+	printf (" %s\n", "-a, --allswaps");
+	printf ("    %s\n", _("Conduct comparisons for all swap partitions, one by one"));
+	printf (" %s\n", "-n, --no-swap=<ok|warning|critical|unknown>");
+	printf ("    %s %s\n", _("Resulting state when there is no swap regardless of thresholds. Default:"), state_text(no_swap_state));
+	printf (UT_VERBOSE);
+
+	printf ("\n");
+	printf ("%s\n", _("Notes:"));
+	printf (" %s\n", _("Both INTEGER and PERCENT thresholds can be specified, they are all checked."));
+	printf (" %s\n", _("On AIX, if -a is specified, uses lsps -a, otherwise uses lsps -s."));
+
+	printf (UT_SUPPORT);
+}
+
+
+void
+print_usage (void)
+{
+	printf ("%s\n", _("Usage:"));
+	printf (" %s [-av] -w <percent_free>%% -c <percent_free>%%\n",progname);
+	printf ("  -w <bytes_free> -c <bytes_free> [-n <state>]\n");
+}