diff --git a/.gitignore b/.gitignore
index 6f903d61..bbd7d844 100644
--- a/.gitignore
+++ b/.gitignore
@@ -221,7 +221,13 @@ NP-VERSION-FILE
/plugins/tests/Makefile.in
/plugins/tests/test_utils
/plugins/tests/test_disk
+/plugins/tests/test_check_swap
/plugins/tests/.deps
+/plugins/tests/.dirstamp
+
+# /plugins/check_swap.d
+/plugins/check_swap.d/.deps
+/plugins/check_swap.d/.dirstamp
# /plugins-root/
/plugins-root/.deps
diff --git a/configure.ac b/configure.ac
index 8594238f..0432336b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ AC_INIT(monitoring-plugins,2.4git)
AC_CONFIG_SRCDIR(NPTest.pm)
AC_CONFIG_FILES([gl/Makefile])
AC_CONFIG_AUX_DIR(build-aux)
-AM_INIT_AUTOMAKE([1.8.3])
+AM_INIT_AUTOMAKE([1.8.3 subdir-objects])
AM_SILENT_RULES([yes])
AM_MAINTAINER_MODE([enable])
AC_CONFIG_HEADERS([config.h])
@@ -185,6 +185,9 @@ fi
if test "$enable_libtap" = "yes" ; then
EXTRA_TEST="test_utils test_disk test_tcp test_cmd test_base64"
AC_SUBST(EXTRA_TEST)
+
+ EXTRA_PLUGIN_TESTS="tests/test_check_swap"
+ AC_SUBST(EXTRA_PLUGIN_TESTS)
fi
dnl INI Parsing
@@ -1850,8 +1853,8 @@ AC_SUBST(EXTRAS_ROOT)
AC_SUBST(EXTRA_NETOBJS)
AC_SUBST(DEPLIBS)
-AM_GNU_GETTEXT([external], [need-ngettext])
-AM_GNU_GETTEXT_VERSION(0.15)
+dnl AM_GNU_GETTEXT([external], [need-ngettext])
+dnl AM_GNU_GETTEXT_VERSION(0.15)
dnl Check for Redhat spopen problem
dnl Weird problem where ECHILD is returned from a wait call in error
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 49086b7a..d43c1971 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -38,19 +38,27 @@ check_tcp_programs = check_ftp check_imap check_nntp check_pop \
EXTRA_PROGRAMS = check_mysql check_radius check_pgsql check_snmp check_hpjd \
check_swap check_fping check_ldap check_game check_dig \
check_nagios check_by_ssh check_dns check_nt check_ide_smart \
- check_procs check_mysql_query check_apt check_dbi check_curl
+ check_procs check_mysql_query check_apt check_dbi check_curl \
+ \
+ tests/test_check_swap
SUBDIRS = picohttpparser
-EXTRA_DIST = t tests
+np_test_scripts = tests/test_check_swap.t
+
+EXTRA_DIST = t tests $(np_test_scripts) check_swap.d
PLUGINHDRS = common.h
noinst_LIBRARIES = libnpcommon.a
+noinst_PROGRAMS = @EXTRA_PLUGIN_TESTS@
+# These two lines support "make check", but we use "make test"
+check_PROGRAMS = @EXTRA_PLUGIN_TESTS@
libnpcommon_a_SOURCES = utils.c netutils.c sslutils.c runcmd.c \
popen.c utils.h netutils.h popen.h common.h runcmd.c runcmd.h
+
BASEOBJS = libnpcommon.a ../lib/libmonitoringplug.a ../gl/libgnu.a $(LIB_CRYPTO)
NETOBJS = $(BASEOBJS) $(EXTRA_NETOBLS)
NETLIBS = $(NETOBJS) $(SOCKETLIBS)
@@ -58,7 +66,10 @@ SSLOBJS = $(BASEOBJS) $(NETLIBS) $(SSLLIBS) $(LIB_CRYPTO)
TESTS_ENVIRONMENT = perl -I $(top_builddir) -I $(top_srcdir)
-TESTS = @PLUGIN_TEST@
+tap_ldflags = -L$(top_srcdir)/tap
+
+TESTS = @PLUGIN_TEST@ @EXTRA_PLUGIN_TESTS@
+
test:
perl -I $(top_builddir) -I $(top_srcdir) ../test.pl
@@ -107,6 +118,7 @@ check_real_LDADD = $(NETLIBS)
check_snmp_LDADD = $(BASEOBJS)
check_smtp_LDADD = $(SSLOBJS)
check_ssh_LDADD = $(NETLIBS)
+check_swap_SOURCES = check_swap.c check_swap.d/swap.c
check_swap_LDADD = $(MATHLIBS) $(BASEOBJS)
check_tcp_LDADD = $(SSLOBJS)
check_time_LDADD = $(NETLIBS)
@@ -122,6 +134,9 @@ if !HAVE_UTMPX
check_users_LDADD += popen.o
endif
+tests_test_check_swap_LDADD = $(BASEOBJS) $(tap_ldflags) -ltap
+tests_test_check_swap_SOURCES = tests/test_check_swap.c check_swap.d/swap.c
+
##############################################################################
# secondary dependencies
diff --git a/plugins/check_swap.c b/plugins/check_swap.c
index e7ee785d..bc90a90b 100644
--- a/plugins/check_swap.c
+++ b/plugins/check_swap.c
@@ -1,607 +1,337 @@
/*****************************************************************************
-*
-* Monitoring check_swap plugin
-*
-* License: GPL
-* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
-* Copyright (c) 2000-2024 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 .
-*
-*
-*****************************************************************************/
+ *
+ * Monitoring check_swap plugin
+ *
+ * License: GPL
+ * Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
+ * Copyright (c) 2000-2024 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 .
+ *
+ *
+ *****************************************************************************/
+
+#include "common.h"
+#ifdef HAVE_DECL_SWAPCTL
+# ifdef HAVE_SYS_PARAM_H
+# include
+# endif
+# ifdef HAVE_SYS_SWAP_H
+# include
+# endif
+# ifdef HAVE_SYS_STAT_H
+# include
+# endif
+#endif
+
+#include
+#include "./check_swap.d/check_swap.h"
+#include "./utils.h"
+
+typedef struct {
+ int errorcode;
+ swap_config config;
+} swap_config_wrapper;
+
+static swap_config_wrapper process_arguments(int argc, char **argv);
+void print_usage(void);
+static void print_help(swap_config /*config*/);
+
+int verbose;
+
+#define HUNDRED_PERCENT 100
+
+#define BYTES_TO_KiB(number) (number / 1024)
+#define BYTES_TO_MiB(number) (BYTES_TO_KiB(number) / 1024)
const char *progname = "check_swap";
const char *copyright = "2000-2024";
const char *email = "devel@monitoring-plugins.org";
-#include "common.h"
-#include "popen.h"
-#include "utils.h"
+int main(int argc, char **argv) {
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
-#ifdef HAVE_DECL_SWAPCTL
-# ifdef HAVE_SYS_PARAM_H
-# include
-# endif
-# ifdef HAVE_SYS_SWAP_H
-# include
-# endif
-# ifdef HAVE_SYS_STAT_H
-# include
-# endif
-#endif
-
-#ifndef SWAP_CONVERSION
-# define SWAP_CONVERSION 1
-#endif
-
-typedef struct {
- bool is_percentage;
- uint64_t value;
-} threshold;
-
-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 warn;
-threshold crit;
-int verbose;
-bool allswaps = false;
-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 ("");
+ char *status = strdup("");
/* Parse extra opts if any */
- argv=np_extra_opts (&argc, argv, progname);
+ argv = np_extra_opts(&argc, argv, progname);
- if (process_arguments (argc, argv) == ERROR)
- usage4 (_("Could not parse arguments"));
+ swap_config_wrapper tmp = process_arguments(argc, argv);
-#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;
+ if (tmp.errorcode != OK) {
+ usage4(_("Could not parse arguments"));
}
- child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
- if (child_stderr == NULL)
- printf (_("Could not open stderr for %s\n"), swap_command);
+ swap_config config = tmp.config;
- 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");
- }
+ swap_result data = get_swap_data(config);
+
+ if (data.errorcode != STATE_OK) {
+ puts("SWAP UNKNOWN - Failed to retrieve Swap usage");
+ exit(STATE_UNKNOWN);
}
-/* 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;iswt_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;iswt_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;iswt_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 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 */
-
+ double percent_used;
/* 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);
+ if (data.metrics.total != 0) {
+ percent_used = HUNDRED_PERCENT * ((double)data.metrics.used) / ((double)data.metrics.total);
} else {
- percent_used = 100;
- status = "- Swap is either disabled, not present, or of zero size. ";
+ printf(_("SWAP %s - Swap is either disabled, not present, or of zero "
+ "size."),
+ state_text(data.statusCode));
+ exit(config.no_swap_state);
}
- 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);
+ if (verbose) {
+ printf("Computed usage percentage: %g\n", percent_used);
+ }
- 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);
+ uint64_t warn_print = config.warn.value;
+ if (config.warn.is_percentage) {
+ warn_print = config.warn.value * (data.metrics.total / HUNDRED_PERCENT);
+ }
- 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));
+ uint64_t crit_print = config.crit.value;
+ if (config.crit.is_percentage) {
+ crit_print = config.crit.value * (data.metrics.total / HUNDRED_PERCENT);
+ }
- return result;
+ char *perfdata = perfdata_uint64("swap", data.metrics.free, "B", config.warn_is_set, warn_print, config.crit_is_set, crit_print, true,
+ 0, true, data.metrics.total);
+
+ if (config.warn_is_set) {
+ if (verbose > 1) {
+ printf("Warn threshold value: %" PRIu64 "\n", config.warn.value);
+ }
+
+ if ((config.warn.is_percentage && (percent_used >= (double)(HUNDRED_PERCENT - config.warn.value))) ||
+ config.warn.value >= data.metrics.free) {
+ data.statusCode = max_state(data.statusCode, STATE_WARNING);
+ }
+ }
+
+ if (config.crit_is_set) {
+ if (verbose > 1) {
+ printf("Crit threshold value: %" PRIu64 "\n", config.crit.value);
+ }
+
+ if ((config.crit.is_percentage && (percent_used >= (double)(HUNDRED_PERCENT - config.crit.value))) ||
+ config.crit.value >= data.metrics.free) {
+ data.statusCode = max_state(data.statusCode, STATE_CRITICAL);
+ }
+ }
+
+ printf(_("SWAP %s - %g%% free (%lluMiB out of %lluMiB) %s|%s\n"), state_text(data.statusCode), (HUNDRED_PERCENT - percent_used),
+ BYTES_TO_MiB(data.metrics.free), BYTES_TO_MiB(data.metrics.total), status, perfdata);
+
+ exit(data.statusCode);
}
+int check_swap(float free_swap_mb, float total_swap_mb, swap_config config) {
+ if (total_swap_mb == 0) {
+ return config.no_swap_state;
+ }
-int
-check_swap(float free_swap_mb, float total_swap_mb)
-{
+ uint64_t free_swap = (uint64_t)(free_swap_mb * (1024 * 1024)); /* Convert back to bytes as warn and crit specified in bytes */
- if (!total_swap_mb) return no_swap_state;
+ if (!config.crit.is_percentage && config.crit.value >= free_swap) {
+ return STATE_CRITICAL;
+ }
+ if (!config.warn.is_percentage && config.warn.value >= free_swap) {
+ return STATE_WARNING;
+ }
- uint64_t free_swap = free_swap_mb * (1024 * 1024); /* Convert back to bytes as warn and crit specified in bytes */
- uint64_t usage_percentage = ((total_swap_mb - free_swap_mb) / total_swap_mb) * 100;
+ uint64_t usage_percentage = (uint64_t)((total_swap_mb - free_swap_mb) / total_swap_mb) * HUNDRED_PERCENT;
- if (warn.value || crit.value) { /* Thresholds defined */
- if (!crit.is_percentage && crit.value >= free_swap) return STATE_CRITICAL;
- if (!warn.is_percentage && warn.value >= free_swap) return STATE_WARNING;
+ if (config.crit.is_percentage && config.crit.value != 0 && usage_percentage >= (HUNDRED_PERCENT - config.crit.value)) {
+ return STATE_CRITICAL;
+ }
- if (crit.is_percentage &&
- crit.value != 0 &&
- usage_percentage >= (100 - crit.value))
- {
- return STATE_CRITICAL;
- }
+ if (config.warn.is_percentage && config.warn.value != 0 && usage_percentage >= (HUNDRED_PERCENT - config.warn.value)) {
+ return STATE_WARNING;
+ }
- if (warn.is_percentage &&
- warn.value != 0 &&
- usage_percentage >= (100 - warn.value))
- {
- return STATE_WARNING;
- }
-
- return STATE_OK;
- } else { /* Without thresholds */
- return STATE_OK;
- }
+ return STATE_OK;
}
-
-
/* process command-line arguments */
-int
-process_arguments (int argc, char **argv)
-{
- int c = 0; /* option character */
+swap_config_wrapper process_arguments(int argc, char **argv) {
+ swap_config_wrapper conf_wrapper = {.errorcode = OK};
+ conf_wrapper.config = swap_config_init();
- 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}
- };
+ 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}};
- while (1) {
- c = getopt_long (argc, argv, "+?Vvhac:w:n:", longopts, &option);
+ while (true) {
+ int option = 0;
+ int option_char = getopt_long(argc, argv, "+?Vvhac:w:n:", longopts, &option);
- if (c == -1 || c == EOF)
+ if (option_char == -1 || option_char == EOF) {
break;
+ }
- switch (c) {
+ switch (option_char) {
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);
+ {
+ /*
+ * 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);
+ conf_wrapper.config.warn_is_set = true;
- if (optarg[length - 1] == '%') {
- /* It's percentage */
- warn.is_percentage = true;
- 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 = false;
- if (is_uint64(optarg, &warn.value)) {
- break;
- } else {
- usage4 (_("Warning threshold be positive integer or percentage!"));
+ if (optarg[length - 1] == '%') {
+ /* It's percentage */
+ conf_wrapper.config.warn.is_percentage = true;
+ optarg[length - 1] = '\0';
+ if (is_uint64(optarg, &conf_wrapper.config.warn.value)) {
+ if (conf_wrapper.config.warn.value > HUNDRED_PERCENT) {
+ usage4(_("Warning threshold percentage must be <= 100!"));
}
}
+ break;
+ } /* It's Bytes */
+ conf_wrapper.config.warn.is_percentage = false;
+ if (is_uint64(optarg, &conf_wrapper.config.warn.value)) {
+ break;
}
+ 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);
+ {
+ /*
+ * 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);
+ conf_wrapper.config.crit_is_set = true;
- if (optarg[length - 1] == '%') {
- /* It's percentage */
- crit.is_percentage = true;
- 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 = false;
- if (is_uint64(optarg, &crit.value)) {
- break;
- } else {
- usage4 (_("Critical threshold be positive integer or percentage!"));
+ if (optarg[length - 1] == '%') {
+ /* It's percentage */
+ conf_wrapper.config.crit.is_percentage = true;
+ optarg[length - 1] = '\0';
+ if (is_uint64(optarg, &conf_wrapper.config.crit.value)) {
+ if (conf_wrapper.config.crit.value > HUNDRED_PERCENT) {
+ usage4(_("Critical threshold percentage must be <= 100!"));
}
}
- }
- case 'a': /* all swap */
- allswaps = true;
+ break;
+ } /* It's Bytes */
+ conf_wrapper.config.crit.is_percentage = false;
+ if (is_uint64(optarg, &conf_wrapper.config.crit.value)) {
+ break;
+ }
+ usage4(_("Critical threshold be positive integer or "
+ "percentage!"));
+ }
+ case 'a': /* all swap */
+ conf_wrapper.config.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)."));
+ if ((conf_wrapper.config.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 */
+ 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 ();
+ case 'V': /* version */
+ print_revision(progname, NP_VERSION);
+ exit(STATE_UNKNOWN);
+ case 'h': /* help */
+ print_help(conf_wrapper.config);
+ exit(STATE_UNKNOWN);
+ case '?': /* error */
+ usage5();
}
}
- c = optind;
- if (c == argc)
- return validate_arguments ();
-
- return validate_arguments ();
-}
-
-
-
-int
-validate_arguments (void)
-{
- 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
+ if ((conf_wrapper.config.warn.is_percentage == conf_wrapper.config.crit.is_percentage) &&
+ (conf_wrapper.config.warn.value < conf_wrapper.config.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;
+
+ return conf_wrapper;
}
+void print_help(swap_config config) {
+ print_revision(progname, NP_VERSION);
+ printf(_(COPYRIGHT), copyright, email);
-void
-print_help (void)
-{
- print_revision (progname, NP_VERSION);
+ printf("%s\n", _("Check swap space on local machine."));
- printf (_(COPYRIGHT), copyright, email);
+ printf("\n\n");
- printf ("%s\n", _("Check swap space on local machine."));
+ print_usage();
- printf ("\n\n");
+ printf(UT_HELP_VRSN);
+ printf(UT_EXTRA_OPTS);
- print_usage ();
+ 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=");
+ printf(" %s %s\n",
+ _("Resulting state when there is no swap regardless of thresholds. "
+ "Default:"),
+ state_text(config.no_swap_state));
+ printf(UT_VERBOSE);
- printf (UT_HELP_VRSN);
- printf (UT_EXTRA_OPTS);
+ 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 (" %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=");
- 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", _("Without thresholds, the plugin shows free swap space and performance data, but always returns OK."));
- printf (" %s\n", _("On AIX, if -a is specified, uses lsps -a, otherwise uses lsps -s."));
-
- printf (UT_SUPPORT);
+ printf(UT_SUPPORT);
}
-
-void
-print_usage (void)
-{
- printf ("%s\n", _("Usage:"));
- printf (" %s [-av] [-w %%] [-c %%]\n",progname);
- printf (" [-w ] [-c ] [-n ]\n");
+void print_usage(void) {
+ printf("%s\n", _("Usage:"));
+ printf(" %s [-av] -w %% -c %%\n", progname);
+ printf(" -w -c [-n ]\n");
}
diff --git a/plugins/check_swap.d/check_swap.h b/plugins/check_swap.d/check_swap.h
new file mode 100644
index 00000000..99039b21
--- /dev/null
+++ b/plugins/check_swap.d/check_swap.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include "../common.h"
+
+#ifndef SWAP_CONVERSION
+# define SWAP_CONVERSION 1
+#endif
+
+typedef struct {
+ bool is_percentage;
+ uint64_t value;
+} check_swap_threshold;
+
+typedef struct {
+ unsigned long long free; // Free swap in Bytes!
+ unsigned long long used; // Used swap in Bytes!
+ unsigned long long total; // Total swap size, you guessed it, in Bytes!
+} swap_metrics;
+
+typedef struct {
+ int errorcode;
+ int statusCode;
+ swap_metrics metrics;
+} swap_result;
+
+typedef struct {
+ bool allswaps;
+ int no_swap_state;
+ bool warn_is_set;
+ check_swap_threshold warn;
+ bool crit_is_set;
+ check_swap_threshold crit;
+ bool on_aix;
+ int conversion_factor;
+} swap_config;
+
+swap_config swap_config_init(void);
+
+swap_result get_swap_data(swap_config config);
+swap_result getSwapFromProcMeminfo(char path_to_proc_meminfo[]);
+swap_result getSwapFromSwapCommand(swap_config config, const char swap_command[], const char swap_format[]);
+swap_result getSwapFromSwapctl_BSD(swap_config config);
+swap_result getSwapFromSwap_SRV4(swap_config config);
diff --git a/plugins/check_swap.d/swap.c b/plugins/check_swap.d/swap.c
new file mode 100644
index 00000000..2fe4544f
--- /dev/null
+++ b/plugins/check_swap.d/swap.c
@@ -0,0 +1,469 @@
+#include "./check_swap.d/check_swap.h"
+#include "../popen.h"
+#include "../utils.h"
+#include "common.h"
+
+extern int verbose;
+
+swap_config swap_config_init(void) {
+ swap_config tmp = {0};
+ tmp.allswaps = false;
+ tmp.no_swap_state = STATE_CRITICAL;
+ tmp.conversion_factor = SWAP_CONVERSION;
+
+ tmp.warn_is_set = false;
+ tmp.crit_is_set = false;
+
+#ifdef _AIX
+ tmp.on_aix = true;
+#else
+ tmp.on_aix = false;
+#endif
+
+ return tmp;
+}
+
+swap_result get_swap_data(swap_config config) {
+#ifdef HAVE_PROC_MEMINFO
+ if (verbose >= 3) {
+ printf("Reading PROC_MEMINFO at %s\n", PROC_MEMINFO);
+ }
+
+ return getSwapFromProcMeminfo(PROC_MEMINFO);
+#else // HAVE_PROC_MEMINFO
+# ifdef HAVE_SWAP
+ if (verbose >= 3) {
+ printf("Using swap command %s with format: %s\n", SWAP_COMMAND, 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 */
+ if (config.on_aix && !config.allswaps) {
+
+ config.conversion_factor = 1;
+
+ return getSwapFromSwapCommand(config, "/usr/sbin/lsps -s", "%lu%*s %lu");
+ } else {
+ return getSwapFromSwapCommand(config, SWAP_COMMAND, SWAP_FORMAT);
+ }
+# else // HAVE_SWAP
+# ifdef CHECK_SWAP_SWAPCTL_SVR4
+ return getSwapFromSwapctl_SRV4();
+# else // CHECK_SWAP_SWAPCTL_SVR4
+# ifdef CHECK_SWAP_SWAPCTL_BSD
+ return getSwapFromSwapctl_BSD();
+# else // CHECK_SWAP_SWAPCTL_BSD
+# error No way found to retrieve swap
+# endif /* CHECK_SWAP_SWAPCTL_BSD */
+# endif /* CHECK_SWAP_SWAPCTL_SVR4 */
+# endif /* HAVE_SWAP */
+#endif /* HAVE_PROC_MEMINFO */
+}
+
+swap_result getSwapFromProcMeminfo(char proc_meminfo[]) {
+ FILE *meminfo_file_ptr;
+ meminfo_file_ptr = fopen(proc_meminfo, "r");
+
+ swap_result result = {0};
+ result.errorcode = STATE_UNKNOWN;
+
+ if (meminfo_file_ptr == NULL) {
+ // failed to open meminfo file
+ // errno should contain an error
+ result.errorcode = STATE_UNKNOWN;
+ return result;
+ }
+
+ uint64_t swap_total = 0;
+ uint64_t swap_used = 0;
+ uint64_t swap_free = 0;
+
+ bool found_total = false;
+ bool found_used = false;
+ bool found_free = false;
+
+ char input_buffer[MAX_INPUT_BUFFER];
+ char str[32];
+
+ while (fgets(input_buffer, MAX_INPUT_BUFFER - 1, meminfo_file_ptr)) {
+ uint64_t tmp_KB = 0;
+
+ /*
+ * 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
+ * Also the units used here are unclear and probably wrong
+ */
+ if (sscanf(input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %lu %lu %lu", &swap_total, &swap_used, &swap_free) == 3) {
+
+ result.metrics.total += swap_total;
+ result.metrics.used += swap_used;
+ result.metrics.free += swap_free;
+
+ found_total = true;
+ found_free = true;
+ found_used = true;
+
+ // Set error
+ result.errorcode = STATE_OK;
+
+ /*
+ * 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 {
+ int sscanf_result = sscanf(input_buffer,
+ "%*[S]%*[w]%*[a]%*[p]%[TotalFreCchd]%*[:] %lu "
+ "%*[k]%*[B]",
+ str, &tmp_KB);
+
+ if (sscanf_result == 2) {
+
+ if (verbose >= 3) {
+ printf("Got %s with %lu\n", str, tmp_KB);
+ }
+
+ /* I think this part is always in Kb, so convert to bytes */
+ if (strcmp("Total", str) == 0) {
+ swap_total = tmp_KB * 1000;
+ found_total = true;
+ } else if (strcmp("Free", str) == 0) {
+ swap_free = swap_free + tmp_KB * 1000;
+ found_free = true;
+ found_used = true; // No explicit used metric available
+ } else if (strcmp("Cached", str) == 0) {
+ swap_free = swap_free + tmp_KB * 1000;
+ found_free = true;
+ found_used = true; // No explicit used metric available
+ }
+
+ result.errorcode = STATE_OK;
+ }
+ }
+ }
+
+ fclose(meminfo_file_ptr);
+
+ result.metrics.total = swap_total;
+ result.metrics.used = swap_total - swap_free;
+ result.metrics.free = swap_free;
+
+ if (!found_free || !found_total || !found_used) {
+ result.errorcode = STATE_UNKNOWN;
+ }
+
+ return result;
+}
+
+swap_result getSwapFromSwapCommand(swap_config config, const char swap_command[], const char swap_format[]) {
+ swap_result result = {0};
+
+ char *temp_buffer;
+
+ 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);
+ swap_result tmp = {
+ .errorcode = STATE_UNKNOWN,
+ };
+ return tmp;
+ }
+
+ child_stderr = fdopen(child_stderr_array[fileno(child_process)], "r");
+ if (child_stderr == NULL) {
+ printf(_("Could not open stderr for %s\n"), swap_command);
+ }
+
+ char str[32] = {0};
+ char input_buffer[MAX_INPUT_BUFFER];
+
+ /* 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");
+ }
+ }
+
+ double total_swap_mb = 0;
+ double free_swap_mb = 0;
+ double used_swap_mb = 0;
+ double dsktotal_mb = 0;
+ double dskused_mb = 0;
+ double dskfree_mb = 0;
+
+ /*
+ * If different swap command is used for summary switch, need to read format
+ * differently
+ */
+ if (config.on_aix && !config.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 {
+ while (fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+ sscanf(input_buffer, swap_format, &dsktotal_mb, &dskfree_mb);
+
+ dsktotal_mb = dsktotal_mb / config.conversion_factor;
+ /* AIX lists percent used, so this converts to dskfree in MBs */
+
+ if (config.on_aix) {
+ dskfree_mb = dsktotal_mb * (100 - dskfree_mb) / 100;
+ } else {
+ dskfree_mb = dskfree_mb / config.conversion_factor;
+ }
+
+ 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;
+ }
+ }
+
+ result.metrics.free = free_swap_mb * 1024 * 1024;
+ result.metrics.used = used_swap_mb * 1024 * 1024;
+ result.metrics.total = free_swap_mb * 1024 * 1024;
+
+ /* If we get anything on STDERR, at least set warning */
+ while (fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) {
+ result.statusCode = max_state(result.statusCode, STATE_WARNING);
+ // TODO Set error here
+ }
+
+ /* close stderr */
+ (void)fclose(child_stderr);
+
+ /* close the pipe */
+ if (spclose(child_process)) {
+ result.statusCode = max_state(result.statusCode, STATE_WARNING);
+ // TODO set error here
+ }
+
+ return result;
+}
+
+#ifndef CHECK_SWAP_SWAPCTL_BSD
+# define CHECK_SWAP_SWAPCTL_BSD
+
+// Stub functionality for BSD stuff, so the compiler always sees the following BSD code
+
+# define SWAP_NSWAP 0
+# define SWAP_STATS 1
+
+int bsd_swapctl(int cmd, const void *arg, int misc) {
+ (void)cmd;
+ (void)arg;
+ (void)misc;
+ return 512;
+}
+
+struct swapent {
+ dev_t se_dev; /* device id */
+ int se_flags; /* entry flags */
+ int se_nblks; /* total blocks */
+ int se_inuse; /* blocks in use */
+ int se_priority; /* priority */
+ char se_path[PATH_MAX]; /* path to entry */
+};
+
+#else
+# define bsd_swapctl swapctl
+#endif
+
+swap_result getSwapFromSwapctl_BSD(swap_config config) {
+ /* get the number of active swap devices */
+ int nswaps = bsd_swapctl(SWAP_NSWAP, NULL, 0);
+
+ /* initialize swap table + entries */
+ struct swapent *ent = (struct swapent *)malloc(sizeof(struct swapent) * (unsigned long)nswaps);
+
+ /* and now, tally 'em up */
+ int swapctl_res = bsd_swapctl(SWAP_STATS, ent, nswaps);
+ if (swapctl_res < 0) {
+ perror(_("swapctl failed: "));
+ die(STATE_UNKNOWN, _("Error in swapctl call\n"));
+ }
+
+ double dsktotal_mb = 0.0;
+ double dskfree_mb = 0.0;
+ double dskused_mb = 0.0;
+ unsigned long long total_swap_mb = 0;
+ unsigned long long free_swap_mb = 0;
+ unsigned long long used_swap_mb = 0;
+
+ for (int i = 0; i < nswaps; i++) {
+ dsktotal_mb = (float)ent[i].se_nblks / (float)config.conversion_factor;
+ dskused_mb = (float)ent[i].se_inuse / (float)config.conversion_factor;
+ dskfree_mb = (dsktotal_mb - dskused_mb);
+
+ if (config.allswaps && dsktotal_mb > 0) {
+ double percent = 100 * (((double)dskused_mb) / ((double)dsktotal_mb));
+
+ if (verbose) {
+ printf("[%.0f (%g%%)]", dskfree_mb, 100 - percent);
+ }
+ }
+
+ total_swap_mb += (unsigned long long)dsktotal_mb;
+ free_swap_mb += (unsigned long long)dskfree_mb;
+ used_swap_mb += (unsigned long long)dskused_mb;
+ }
+
+ /* and clean up after ourselves */
+ free(ent);
+
+ swap_result result = {0};
+
+ result.statusCode = OK;
+ result.errorcode = OK;
+
+ result.metrics.total = total_swap_mb * 1024 * 1024;
+ result.metrics.free = free_swap_mb * 1024 * 1024;
+ result.metrics.used = used_swap_mb * 1024 * 1024;
+
+ return result;
+}
+
+#ifndef CHECK_SWAP_SWAPCTL_SVR4
+int srv4_swapctl(int cmd, void *arg) {
+ (void)cmd;
+ (void)arg;
+ return 512;
+}
+
+typedef struct srv4_swapent {
+ char *ste_path; /* name of the swap file */
+ off_t ste_start; /* starting block for swapping */
+ off_t ste_length; /* length of swap area */
+ long ste_pages; /* number of pages for swapping */
+ long ste_free; /* number of ste_pages free */
+ long ste_flags; /* ST_INDEL bit set if swap file */
+ /* is now being deleted */
+} swapent_t;
+
+typedef struct swaptbl {
+ int swt_n; /* number of swapents following */
+ struct srv4_swapent swt_ent[]; /* array of swt_n swapents */
+} swaptbl_t;
+
+# define SC_LIST 2
+# define SC_GETNSWP 3
+
+# ifndef MAXPATHLEN
+# define MAXPATHLEN 2048
+# endif
+
+#else
+# define srv4_swapctl swapctl
+#endif
+
+swap_result getSwapFromSwap_SRV4(swap_config config) {
+ int nswaps = 0;
+
+ /* get the number of active swap devices */
+ if ((nswaps = srv4_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 */
+ swaptbl_t *tbl = (swaptbl_t *)malloc(sizeof(swaptbl_t) + (sizeof(swapent_t) * (unsigned long)nswaps));
+
+ if (tbl == NULL) {
+ die(STATE_UNKNOWN, _("malloc() failed!\n"));
+ }
+
+ memset(tbl, 0, sizeof(swaptbl_t) + (sizeof(swapent_t) * (unsigned long)nswaps));
+ tbl->swt_n = nswaps;
+
+ for (int 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 */
+ int swapctl_res = srv4_swapctl(SC_LIST, tbl);
+ if (swapctl_res < 0) {
+ perror(_("swapctl failed: "));
+ die(STATE_UNKNOWN, _("Error in swapctl call\n"));
+ }
+
+ double dsktotal_mb = 0.0;
+ double dskfree_mb = 0.0;
+ double dskused_mb = 0.0;
+ unsigned long long total_swap_mb = 0;
+ unsigned long long free_swap_mb = 0;
+ unsigned long long used_swap_mb = 0;
+
+ for (int 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 (config.allswaps && dsktotal_mb > 0) {
+ double percent = 100 * (((double)dskused_mb) / ((double)dsktotal_mb));
+
+ if (verbose) {
+ printf("[%.0f (%g%%)]", dskfree_mb, 100 - percent);
+ }
+ }
+
+ total_swap_mb += (unsigned long long)dsktotal_mb;
+ free_swap_mb += (unsigned long long)dskfree_mb;
+ used_swap_mb += (unsigned long long)dskused_mb;
+ }
+
+ /* and clean up after ourselves */
+ for (int i = 0; i < nswaps; i++) {
+ free(tbl->swt_ent[i].ste_path);
+ }
+ free(tbl);
+
+ swap_result result = {0};
+ result.errorcode = OK;
+ result.metrics.total = total_swap_mb * 1024 * 1024;
+ result.metrics.free = free_swap_mb * 1024 * 1024;
+ result.metrics.used = used_swap_mb * 1024 * 1024;
+
+ return result;
+}
diff --git a/plugins/t/check_swap.t b/plugins/t/check_swap.t
index 18780386..eaa81083 100644
--- a/plugins/t/check_swap.t
+++ b/plugins/t/check_swap.t
@@ -8,9 +8,9 @@ use strict;
use Test::More tests => 14;
use NPTest;
-my $successOutput = '/^SWAP OK - [0-9]+\% free \([0-9]+MB out of [0-9]+MB\)/';
-my $failureOutput = '/^SWAP CRITICAL - [0-9]+\% free \([0-9]+MB out of [0-9]+MB\)/';
-my $warnOutput = '/^SWAP WARNING - [0-9]+\% free \([0-9]+MB out of [0-9]+MB\)/';
+my $successOutput = '/^SWAP OK - [0-9]+\% free \([0-9]+MiB out of [0-9]+MiB\)/';
+my $failureOutput = '/^SWAP CRITICAL - [0-9]+\% free \([0-9]+MiB out of [0-9]+MiB\)/';
+my $warnOutput = '/^SWAP WARNING - [0-9]+\% free \([0-9]+MiB out of [0-9]+MiB\)/';
my $result;
diff --git a/plugins/tests/test_check_swap.c b/plugins/tests/test_check_swap.c
new file mode 100644
index 00000000..b85fb4ad
--- /dev/null
+++ b/plugins/tests/test_check_swap.c
@@ -0,0 +1,23 @@
+
+#include "../check_swap.d/check_swap.h"
+#include "../../tap/tap.h"
+
+int verbose = 0;
+
+void print_usage(void) {}
+void print_help(swap_config config) {
+ (void) config;
+}
+
+const char *progname = "test_check_swap";
+
+int main(void) {
+ swap_result test_data = getSwapFromProcMeminfo("./var/proc_meminfo");
+
+ plan_tests(4);
+
+ ok(test_data.errorcode == 0, "Test whether we manage to retrieve swap data");
+ ok(test_data.metrics.total == 34233905152, "Is the total Swap correct");
+ ok(test_data.metrics.free == 34233905152, "Is the free Swap correct");
+ ok(test_data.metrics.used == 0, "Is the used Swap correct");
+}
diff --git a/plugins/tests/test_check_swap.t b/plugins/tests/test_check_swap.t
new file mode 100755
index 00000000..826fae01
--- /dev/null
+++ b/plugins/tests/test_check_swap.t
@@ -0,0 +1,6 @@
+#!/usr/bin/perl
+use Test::More;
+if (! -e "./test_check_swap") {
+ plan skip_all => "./test_check_swap not compiled - please enable libtap library to test";
+}
+exec "./test_check_swap";
diff --git a/plugins/tests/var/proc_meminfo b/plugins/tests/var/proc_meminfo
new file mode 100644
index 00000000..6c5a618d
--- /dev/null
+++ b/plugins/tests/var/proc_meminfo
@@ -0,0 +1,55 @@
+MemTotal: 32767776 kB
+MemFree: 1693508 kB
+MemAvailable: 23807480 kB
+Buffers: 438456 kB
+Cached: 19124976 kB
+SwapCached: 0 kB
+Active: 7860680 kB
+Inactive: 18886776 kB
+Active(anon): 6108756 kB
+Inactive(anon): 1364500 kB
+Active(file): 1751924 kB
+Inactive(file): 17522276 kB
+Unevictable: 8548 kB
+Mlocked: 8548 kB
+SwapTotal: 33431548 kB
+SwapFree: 33431548 kB
+Zswap: 0 kB
+Zswapped: 0 kB
+Dirty: 784 kB
+Writeback: 0 kB
+AnonPages: 7139968 kB
+Mapped: 1094916 kB
+Shmem: 284160 kB
+KReclaimable: 3303788 kB
+Slab: 3801908 kB
+SReclaimable: 3303788 kB
+SUnreclaim: 498120 kB
+KernelStack: 32992 kB
+PageTables: 68160 kB
+SecPageTables: 0 kB
+NFS_Unstable: 0 kB
+Bounce: 0 kB
+WritebackTmp: 0 kB
+CommitLimit: 49815436 kB
+Committed_AS: 16888536 kB
+VmallocTotal: 34359738367 kB
+VmallocUsed: 91200 kB
+VmallocChunk: 0 kB
+Percpu: 41472 kB
+HardwareCorrupted: 0 kB
+AnonHugePages: 1708032 kB
+ShmemHugePages: 0 kB
+ShmemPmdMapped: 0 kB
+FileHugePages: 0 kB
+FilePmdMapped: 0 kB
+Unaccepted: 0 kB
+HugePages_Total: 0
+HugePages_Free: 0
+HugePages_Rsvd: 0
+HugePages_Surp: 0
+Hugepagesize: 2048 kB
+Hugetlb: 0 kB
+DirectMap4k: 860468 kB
+DirectMap2M: 20023296 kB
+DirectMap1G: 12582912 kB