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Merge branch 'handle-hanging-nfs'

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* handle-hanging-nfs:
  NEWS: Mention check_disk enhancement
  Cosmetic change: s/THRLIBS/THREADLIBS/
  configure.ac: Don't let pthread check depend on OS
  check_disk: Seperate declarations from code
  check_disk: Remove unused status variable
  check_disk: Fix pthread start routine type
  Don't let check_disk hang on hanging file systems
This commit is contained in:
Holger Weiss 2014-12-02 13:22:17 +01:00
commit 04e0a182ae
4 changed files with 51 additions and 1 deletions
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1
NEWS
View file

@ -6,6 +6,7 @@ This file documents the major additions and syntax changes between releases.
thresholds
New check_snmp "-N" option to specify SNMPv3 context name
New check_nt "-l" parameters: seconds|minutes|hours|days
Make sure check_disk won't hang on hanging (network) file systems
FIXES
Let check_real terminate lines with CRLF when talking to the server, as

6
configure.ac
View file

@ -156,6 +156,12 @@ AC_CHECK_LIB(socket,socket,SOCKETLIBS="$SOCKETLIBS -lsocket")
AC_CHECK_LIB(resolv,main,SOCKETLIBS="$SOCKETLIBS -lresolv")
AC_SUBST(SOCKETLIBS)
dnl Check for POSIX thread libraries
AC_CHECK_HEADERS(pthread.h)
AC_CHECK_LIB(pthread,pthread_create,THREADLIBS="-lpthread",
AC_CHECK_LIB(pthread,pthread_create,THREADLIBS="-lpthread -lrt",-lrt))
AC_SUBST(THREADLIBS)
dnl
dnl check for math-related functions needing -lm
AC_CHECK_HEADERS(math.h)

2
plugins/Makefile.am
View file

@ -71,7 +71,7 @@ check_apt_LDADD = $(BASEOBJS)
check_cluster_LDADD = $(BASEOBJS)
check_dbi_LDADD = $(NETLIBS) $(DBILIBS)
check_dig_LDADD = $(NETLIBS)
check_disk_LDADD = $(BASEOBJS)
check_disk_LDADD = $(BASEOBJS) $(THREADLIBS)
check_dns_LDADD = $(NETLIBS)
check_dummy_LDADD = $(BASEOBJS)
check_fping_LDADD = $(NETLIBS)

43
plugins/check_disk.c
View file

@ -51,6 +51,9 @@ const char *email = "devel@monitoring-plugins.org";
# include <limits.h>
#endif
#include "regex.h"
#if HAVE_PTHREAD_H
# include <pthread.h>
#endif
#ifdef __CYGWIN__
# include <windows.h>
@ -130,6 +133,7 @@ void print_help (void);
void print_usage (void);
double calculate_percent(uintmax_t, uintmax_t);
void stat_path (struct parameter_list *p);
void *do_stat_path (void *p);
void get_stats (struct parameter_list *p, struct fs_usage *fsp);
void get_path_stats (struct parameter_list *p, struct fs_usage *fsp);
@ -968,6 +972,44 @@ print_usage (void)
void
stat_path (struct parameter_list *p)
{
#ifdef HAVE_PTHREAD_H
pthread_t stat_thread;
int statdone = 0;
int timer = timeout_interval;
struct timespec req, rem;
req.tv_sec = 0;
pthread_create(&stat_thread, NULL, do_stat_path, p);
while (timer-- > 0) {
req.tv_nsec = 10000000;
nanosleep(&req, &rem);
if (pthread_kill(stat_thread, 0)) {
statdone = 1;
break;
} else {
req.tv_nsec = 990000000;
nanosleep(&req, &rem);
}
}
if (statdone == 1) {
pthread_join(stat_thread, NULL);
} else {
pthread_detach(stat_thread);
if (verbose >= 3)
printf("stat did not return within %ds on %s\n", timeout_interval, p->name);
printf("DISK %s - ", _("CRITICAL"));
die (STATE_CRITICAL, _("%s %s: %s\n"), p->name, _("hangs"), _("Timeout"));
}
#else
do_stat_path(p);
#endif
}
void *
do_stat_path (void *in)
{
struct parameter_list *p = in;
/* Stat entry to check that dir exists and is accessible */
if (verbose >= 3)
printf("calling stat on %s\n", p->name);
@ -977,6 +1019,7 @@ stat_path (struct parameter_list *p)
printf("DISK %s - ", _("CRITICAL"));
die (STATE_CRITICAL, _("%s %s: %s\n"), p->name, _("is not accessible"), strerror(errno));
}
return NULL;
}