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Merge branch 'master' into fix_check_http_state_regex

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Lorenz Kästle 2025-01-07 11:25:47 +01:00 committed by GitHub
commit 558aca48ed
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12 changed files with 932 additions and 614 deletions
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2
.github/mock.sh vendored
View file

@ -59,7 +59,7 @@ mkdir -p "${SRCRPM_DIR}" "${RPM_DIR}"
dnf -y --setopt="tsflags=nodocs" install rpmdevtools && \
spectool -g -C ${SOURCE_DIR} ${SPEC_FILE} && \
mock --init && \
{ mock --no-clean --spec ${SPEC_FILE} --sources=${SOURCE_DIR} --result=${SRCRPM_DIR} --build || \
{ mock --no-clean --spec ${SPEC_FILE} --sources=${SOURCE_DIR} --result=${SRCRPM_DIR} --buildsrpm || \
{ cat ${SRCRPM_DIR}/{root,build}.log; exit 1; } } && \
{ mock --no-clean --sources=${SOURCE_DIR} --result=${RPM_DIR} --rebuild "${SRCRPM_DIR}"/${SRC_RPM} || \
{ cat ${RPM_DIR}/{root,build}.log; exit 1; } }

7
.gitignore vendored
View file

@ -58,6 +58,7 @@ NP-VERSION-FILE
/gl/charset.alias
/gl/configmake.h
/gl/errno.h
/gl/error.h
/gl/fcntl.h
/gl/float.h
/gl/getopt.h
@ -221,7 +222,13 @@ 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

106
configure.ac
View file

@ -1,10 +1,10 @@
dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.64)
AC_INIT(monitoring-plugins,2.4git)
AC_PREREQ([2.64])
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])
@ -43,14 +43,14 @@ AC_SUBST(INSTALL)
AC_PROG_CC
gl_EARLY
AC_PROG_GCC_TRADITIONAL
AC_PROG_LIBTOOL
LT_INIT
AM_PROG_CC_C_O
AC_FUNC_ERROR_AT_LINE
AC_SYS_LARGEFILE
ifdef([AC_FUNC_STRTOD],[AC_FUNC_STRTOD],[AM_FUNC_STRTOD])
ifdef([AC_FUNC_STRTOD],[AC_FUNC_STRTOD],[AC_FUNC_STRTOD])
PLUGIN_TEST=`echo $srcdir/plugins/t/*.t|sed -e 's,\.*/plugins/,,g'`
AC_SUBST(PLUGIN_TEST)dnl
@ -125,8 +125,7 @@ AC_SUBST(PERL, $with_perl)
dnl openssl/gnutls
AC_ARG_WITH(openssl,
AC_HELP_STRING([--with-openssl=DIR],
[path to openssl installation]),)
AS_HELP_STRING([--with-openssl=DIR],[path to openssl installation]),)
AC_ARG_WITH(gnutls,
ACX_HELP_STRING([--with-gnutls=PATH],
@ -167,8 +166,7 @@ AC_SUBST(MATHLIBS)
dnl Check if we buils local libtap
AC_ARG_ENABLE(libtap,
AC_HELP_STRING([--enable-libtap],
[Enable built-in libtap for unit-testing (default: autodetect system library).]),
AS_HELP_STRING([--enable-libtap],[Enable built-in libtap for unit-testing (default: autodetect system library).]),
[enable_libtap=$enableval],
[enable_libtap=no])
AM_CONDITIONAL([USE_LIBTAP_LOCAL],[test "$enable_libtap" = "yes"])
@ -185,12 +183,14 @@ fi
if test "$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
AC_ARG_ENABLE(extra-opts,
AC_HELP_STRING([--enable-extra-opts],
[Enables parsing of plugins ini config files for extra options (default: no)]),
AS_HELP_STRING([--enable-extra-opts],[Enables parsing of plugins ini config files for extra options (default: no)]),
[enable_extra_opts=$enableval],
[enable_extra_opts=yes])
AM_CONDITIONAL([USE_PARSE_INI],[test "$enable_extra_opts" = "yes"])
@ -464,20 +464,16 @@ AC_ARG_WITH([ipv6],
dnl Check for AF_INET6 support - unistd.h required for Darwin
if test "$with_ipv6" != "no"; then
AC_CACHE_CHECK([for IPv6 support], np_cv_sys_ipv6, [
AC_TRY_COMPILE(
[#ifdef HAVE_UNISTD_H
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <netinet/in.h>
#include <sys/socket.h>],
[struct sockaddr_in6 sin6;
#include <sys/socket.h>]], [[struct sockaddr_in6 sin6;
void *p;
sin6.sin6_family = AF_INET6;
sin6.sin6_port = 587;
p = &sin6.sin6_addr;],
[np_cv_sys_ipv6=yes],
[np_cv_sys_ipv6=no])
p = &sin6.sin6_addr;]])],[np_cv_sys_ipv6=yes],[np_cv_sys_ipv6=no])
])
if test "$np_cv_sys_ipv6" = "no" -a "$with_ipv6" != "check"; then
AC_MSG_FAILURE([--with-ipv6 was given, but test for IPv6 support failed])
@ -611,10 +607,10 @@ dnl
dnl Checks for header files.
dnl
AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(signal.h syslog.h uio.h errno.h sys/time.h sys/socket.h sys/un.h sys/poll.h)
AC_CHECK_HEADERS(features.h stdarg.h sys/unistd.h ctype.h)
AC_CHECK_HEADERS_ONCE([sys/time.h])
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
@ -623,36 +619,27 @@ AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_CACHE_CHECK([for va_copy],ac_cv_HAVE_VA_COPY,[
AC_TRY_LINK([#include <stdarg.h>
va_list ap1,ap2;], [va_copy(ap1,ap2);],
ac_cv_HAVE_VA_COPY=yes,
ac_cv_HAVE_VA_COPY=no)])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
va_list ap1,ap2;]], [[va_copy(ap1,ap2);]])],[ac_cv_HAVE_VA_COPY=yes],[ac_cv_HAVE_VA_COPY=no])])
if test x"$ac_cv_HAVE_VA_COPY" = x"yes"; then
AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available])
else
AC_CACHE_CHECK([for __va_copy],ac_cv_HAVE___VA_COPY,[
AC_TRY_LINK([#include <stdarg.h>
va_list ap1,ap2;], [__va_copy(ap1,ap2);],
ac_cv_HAVE___VA_COPY=yes,
ac_cv_HAVE___VA_COPY=no)])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
va_list ap1,ap2;]], [[__va_copy(ap1,ap2);]])],[ac_cv_HAVE___VA_COPY=yes],[ac_cv_HAVE___VA_COPY=no])])
if test x"$ac_cv_HAVE___VA_COPY" = x"yes"; then
AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available])
fi
fi
AC_TRY_COMPILE([#include <sys/time.h>],
[struct timeval *tv;
struct timezone *tz;],
AC_DEFINE(HAVE_STRUCT_TIMEVAL,1,[Define if we have a timeval structure])
FOUND_STRUCT_TIMEVAL="yes")
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/time.h>]], [[struct timeval *tv;
struct timezone *tz;]])],[AC_DEFINE(HAVE_STRUCT_TIMEVAL,1,Define if we have a timeval structure)
FOUND_STRUCT_TIMEVAL="yes"],[])
if test x"$FOUND_STRUCT_TIMEVAL" = x"yes"; then
AC_TRY_COMPILE([#include <sys/time.h>],
[struct timeval *tv;
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/time.h>]], [[struct timeval *tv;
struct timezone *tz;
gettimeofday(tv, tz);],
AC_DEFINE(HAVE_GETTIMEOFDAY,1,[Define if gettimeofday is found]),
AC_DEFINE(NEED_GETTIMEOFDAY,1,[Define if gettimeofday is needed]))
gettimeofday(tv, tz);]])],[AC_DEFINE(HAVE_GETTIMEOFDAY,1,Define if gettimeofday is found)],[AC_DEFINE(NEED_GETTIMEOFDAY,1,Define if gettimeofday is needed)])
fi
dnl Checks for library functions.
@ -660,14 +647,11 @@ AC_CHECK_FUNCS(memmove select socket strdup strstr strtol strtoul floor)
AC_CHECK_FUNCS(poll)
AC_MSG_CHECKING(return type of socket size)
AC_TRY_COMPILE([#include <stdlib.h>
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>],
[int a = send(1, (const void *) buffer, (size_t *) 0, (int *) 0);],
ac_cv_socket_size_type=["size_t"]
AC_MSG_RESULT(size_t),
ac_cv_socket_size_type=["int"]
AC_MSG_RESULT(int))
#include <sys/socket.h>]], [[int a = send(1, (const void *) buffer, (size_t *) 0, (int *) 0);]])],[ac_cv_socket_size_type="size_t"
AC_MSG_RESULT(size_t)],[ac_cv_socket_size_type="int"
AC_MSG_RESULT(int)])
AC_DEFINE_UNQUOTED(SOCKET_SIZE_TYPE, $ac_cv_socket_size_type ,
[Define type of socket size])
@ -1430,20 +1414,14 @@ if test -n "$ac_cv_nslookup_command"; then
fi
AC_MSG_CHECKING([for number of online cpus])
AC_TRY_COMPILE([#include <unistd.h>],
[sysconf(_SC_NPROCESSORS_ONLN) > 0;],
AC_DEFINE(HAVE_SYSCONF__SC_NPROCESSORS_ONLN,1,[Define if sysconf returns number of online cpus])
AC_MSG_RESULT([sysconf(_SC_NPROCESSORS_ONLN)]),
AC_MSG_RESULT([cannot calculate])
)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]], [[sysconf(_SC_NPROCESSORS_ONLN) > 0;]])],[AC_DEFINE(HAVE_SYSCONF__SC_NPROCESSORS_ONLN,1,Define if sysconf returns number of online cpus)
AC_MSG_RESULT(sysconf(_SC_NPROCESSORS_ONLN))],[AC_MSG_RESULT(cannot calculate)
])
AC_MSG_CHECKING([for number of available cpus])
AC_TRY_COMPILE([#include <unistd.h>],
[sysconf(_SC_NPROCESSORS_CONF) > 0;],
AC_DEFINE(HAVE_SYSCONF__SC_NPROCESSORS_CONF,1,[Define if sysconf returns number of available cpus])
AC_MSG_RESULT([sysconf(_SC_NPROCESSORS_CONF)]),
AC_MSG_RESULT([cannot calculate])
)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]], [[sysconf(_SC_NPROCESSORS_CONF) > 0;]])],[AC_DEFINE(HAVE_SYSCONF__SC_NPROCESSORS_CONF,1,Define if sysconf returns number of available cpus)
AC_MSG_RESULT(sysconf(_SC_NPROCESSORS_CONF))],[AC_MSG_RESULT(cannot calculate)
])
AC_PATH_PROG(PATH_TO_UPTIME,uptime)
AC_ARG_WITH(uptime_command,
@ -1850,8 +1828,8 @@ 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
@ -1861,8 +1839,7 @@ dnl We patch plugins/popen.c
dnl Need to add smp because uname different on those
dnl Can force patch to be applied with --enable-redhat-pthread-workaround
AC_ARG_ENABLE(redhat-pthread-workaround,
AC_HELP_STRING([--enable-redhat-pthread-workaround],
[force Redhat patch to be applied (default: test system)]),
AS_HELP_STRING([--enable-redhat-pthread-workaround],[force Redhat patch to be applied (default: test system)]),
[ac_cv_enable_redhat_pthread_workaround=$enableval],
[ac_cv_enable_redhat_pthread_workaround=test])
if test "$ac_cv_enable_redhat_pthread_workaround" = "test" ; then
@ -1883,8 +1860,7 @@ fi
dnl Perl modules
AC_ARG_ENABLE(perl-modules,
AC_HELP_STRING([--enable-perl-modules],
[Enables installation of Monitoring::Plugin and its dependencies (default: no)]),
AS_HELP_STRING([--enable-perl-modules],[Enables installation of Monitoring::Plugin and its dependencies (default: no)]),
[enable_perl_modules=$enableval],
[enable_perl_modules=no])
if test "$enable_perl_modules" = "yes" ; then
@ -1911,8 +1887,7 @@ if test "$ac_cv_uname_s" = 'SunOS' -a \( "x$ac_cv_prog_ac_ct_AR" = "x" -o "$ac_c
AC_MSG_ERROR(No ar found for Solaris - is /usr/ccs/bin in PATH?)
fi
AC_OUTPUT(
Makefile
AC_CONFIG_FILES([Makefile
tap/Makefile
lib/Makefile
plugins/Makefile
@ -1924,7 +1899,8 @@ AC_OUTPUT(
perlmods/Makefile
test.pl
pkg/solaris/pkginfo
)
])
AC_OUTPUT
dnl the ones below that are commented out need to be cleaned up

21
plugins/Makefile.am
View file

@ -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

798
plugins/check_swap.c
View file

@ -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 <http://www.gnu.org/licenses/>.
*
*
*****************************************************************************/
*
* 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 <http://www.gnu.org/licenses/>.
*
*
*****************************************************************************/
#include "common.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
#include <stdint.h>
#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 <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 {
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;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 */
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=<ok|warning|critical|unknown>");
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=<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", _("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 <percent_free>%%] [-c <percent_free>%%]\n",progname);
printf (" [-w <bytes_free>] [-c <bytes_free>] [-n <state>]\n");
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");
}

43
plugins/check_swap.d/check_swap.h Normal file
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#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);

469
plugins/check_swap.d/swap.c Normal file
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#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;
}

10
plugins/common.h
View file

@ -90,16 +90,10 @@
# define GET_NUMBER_OF_CPUS() -1
#endif
#ifdef TIME_WITH_SYS_TIME
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#include <time.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>

6
plugins/t/check_swap.t
View file

@ -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;

23
plugins/tests/test_check_swap.c Normal file
View file

@ -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");
}

6
plugins/tests/test_check_swap.t Executable file
View file

@ -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";

55
plugins/tests/var/proc_meminfo Normal file
View file

@ -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