20 files changed, 360 insertions, 253 deletions

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 01d73a64..1a47395d 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -7,7 +7,7 @@ noinst_LIBRARIES = libmonitoringplug.a
 AM_CPPFLAGS = -DNP_STATE_DIR_PREFIX=\"$(localstatedir)\" \
         -I$(srcdir) -I$(top_srcdir)/gl -I$(top_srcdir)/intl -I$(top_srcdir)/plugins
 
-libmonitoringplug_a_SOURCES = utils_base.c utils_disk.c utils_tcp.c utils_cmd.c
+libmonitoringplug_a_SOURCES = utils_base.c utils_disk.c utils_tcp.c utils_cmd.c maxfd.c
 EXTRA_DIST = utils_base.h utils_disk.h utils_tcp.h utils_cmd.h parse_ini.h extra_opts.h
 
 if USE_PARSE_INI
diff --git a/lib/extra_opts.c b/lib/extra_opts.c
index f4d5e66a..771621d8 100644
--- a/lib/extra_opts.c
+++ b/lib/extra_opts.c
@@ -1,23 +1,23 @@
 /*****************************************************************************
-* 
+*
 * Monitoring Plugins extra_opts library
-* 
+*
 * License: GPL
 * Copyright (c) 2007 Monitoring Plugins Development Team
-* 
+*
 * 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"
@@ -26,15 +26,14 @@
 #include "extra_opts.h"
 
 /* FIXME: copied from utils.h; we should move a bunch of libs! */
-int
-is_option2 (char *str)
+bool is_option2 (char *str)
 {
         if (!str)
-                return FALSE;
+                return false;
         else if (strspn (str, "-") == 1 || strspn (str, "-") == 2)
-                return TRUE;
+                return true;
         else
-                return FALSE;
+                return false;
 }
 
 /* this is the externally visible function used by plugins */
@@ -93,14 +92,14 @@ char **np_extra_opts(int *argc, char **argv, const char *plugin_name){
                         /* append the list to extra_args */
                         if(extra_args==NULL){
                                 extra_args=ea1;
-                                while(ea1=ea1->next) ea_num++;
+                                while((ea1 = ea1->next)) ea_num++;
                         }else{
                                 ea_tmp=extra_args;
                                 while(ea_tmp->next) {
                                         ea_tmp=ea_tmp->next;
                                 }
                                 ea_tmp->next=ea1;
-                                while(ea1=ea1->next) ea_num++;
+                                while((ea1 = ea1->next)) ea_num++;
                         }
                         ea1=ea_tmp=NULL;
                 }
diff --git a/lib/maxfd.c b/lib/maxfd.c
new file mode 100644
index 00000000..529b3568
--- /dev/null
+++ b/lib/maxfd.c
@@ -0,0 +1,26 @@
+#include "./maxfd.h"
+#include <errno.h>
+
+long mp_open_max (void) {
+        long maxfd = 0L;
+        /* Try sysconf(_SC_OPEN_MAX) first, as it can be higher than OPEN_MAX.
+         * If that fails and the macro isn't defined, we fall back to an educated
+         * guess. There's no guarantee that our guess is adequate and the program
+         * will die with SIGSEGV if it isn't and the upper boundary is breached. */
+
+#ifdef _SC_OPEN_MAX
+        errno = 0;
+        if ((maxfd = sysconf (_SC_OPEN_MAX)) < 0) {
+                if (errno == 0)
+                        maxfd = DEFAULT_MAXFD;   /* it's indeterminate */
+                else
+                        die (STATE_UNKNOWN, _("sysconf error for _SC_OPEN_MAX\n"));
+        }
+#elif defined(OPEN_MAX)
+        return OPEN_MAX
+#else   /* sysconf macro unavailable, so guess (may be wildly inaccurate) */
+        return DEFAULT_MAXFD;
+#endif
+
+        return(maxfd);
+}
diff --git a/lib/maxfd.h b/lib/maxfd.h
new file mode 100644
index 00000000..45218d0f
--- /dev/null
+++ b/lib/maxfd.h
@@ -0,0 +1,9 @@
+#ifndef _MAXFD_
+#define _MAXFD_
+
+#define DEFAULT_MAXFD  256   /* fallback value if no max open files value is set */
+#define MAXFD_LIMIT   8192   /* upper limit of open files */
+
+long mp_open_max (void);
+
+#endif // _MAXFD_
diff --git a/lib/parse_ini.c b/lib/parse_ini.c
index 547af433..0cc864ae 100644
--- a/lib/parse_ini.c
+++ b/lib/parse_ini.c
@@ -1,24 +1,24 @@
 /*****************************************************************************
-* 
+*
 * Monitoring Plugins parse_ini library
-* 
+*
 * License: GPL
 * Copyright (c) 2007 Monitoring Plugins Development Team
-* 
+*
 * 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"
@@ -131,7 +131,7 @@ np_get_defaults(const char *locator, const char *default_section)
         if (inifile == NULL)
                 die(STATE_UNKNOWN, _("Can't read config file: %s\n"),
                     strerror(errno));
-        if (read_defaults(inifile, i.stanza, &defaults) == FALSE)
+        if (!read_defaults(inifile, i.stanza, &defaults))
                 die(STATE_UNKNOWN,
                     _("Invalid section '%s' in config file '%s'\n"), i.stanza,
                     i.file);
@@ -157,7 +157,8 @@ np_get_defaults(const char *locator, const char *default_section)
 static int
 read_defaults(FILE *f, const char *stanza, np_arg_list **opts)
 {
-        int c, status = FALSE;
+        int c = 0;
+        bool status = false;
         size_t i, stanza_len;
         enum { NOSTANZA, WRONGSTANZA, RIGHTSTANZA } stanzastate = NOSTANZA;
 
@@ -219,7 +220,7 @@ read_defaults(FILE *f, const char *stanza, np_arg_list **opts)
                                         die(STATE_UNKNOWN, "%s\n",
                                             _("Config file error"));
                                 }
-                                status = TRUE;
+                                status = true;
                                 break;
                         }
                         break;
diff --git a/lib/tests/test_base64.c b/lib/tests/test_base64.c
index 5103d10d..05dd7943 100644
--- a/lib/tests/test_base64.c
+++ b/lib/tests/test_base64.c
@@ -1,19 +1,19 @@
 /*****************************************************************************
-* 
+*
 * 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"
diff --git a/lib/tests/test_cmd.c b/lib/tests/test_cmd.c
index 4bb60aac..02ae11f5 100644
--- a/lib/tests/test_cmd.c
+++ b/lib/tests/test_cmd.c
@@ -1,19 +1,19 @@
 /*****************************************************************************
-* 
+*
 * 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"
diff --git a/lib/tests/test_disk.c b/lib/tests/test_disk.c
index 9bd68c7a..e283fe2e 100644
--- a/lib/tests/test_disk.c
+++ b/lib/tests/test_disk.c
@@ -1,19 +1,19 @@
 /*****************************************************************************
-* 
+*
 * 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"
@@ -44,19 +44,19 @@ main (int argc, char **argv)
 
         plan_tests(33);
 
-        ok( np_find_name(exclude_filesystem, "/var/log") == FALSE, "/var/log not in list");
+        ok( np_find_name(exclude_filesystem, "/var/log") == false, "/var/log not in list");
         np_add_name(&exclude_filesystem, "/var/log");
-        ok( np_find_name(exclude_filesystem, "/var/log") == TRUE, "is in list now");
-        ok( np_find_name(exclude_filesystem, "/home") == FALSE, "/home not in list");
+        ok( np_find_name(exclude_filesystem, "/var/log") == true, "is in list now");
+        ok( np_find_name(exclude_filesystem, "/home") == false, "/home not in list");
         np_add_name(&exclude_filesystem, "/home");
-        ok( np_find_name(exclude_filesystem, "/home") == TRUE, "is in list now");
-        ok( np_find_name(exclude_filesystem, "/var/log") == TRUE, "/var/log still in list");
+        ok( np_find_name(exclude_filesystem, "/home") == true, "is in list now");
+        ok( np_find_name(exclude_filesystem, "/var/log") == true, "/var/log still in list");
 
-        ok( np_find_name(exclude_fstype, "iso9660") == FALSE, "iso9660 not in list");
+        ok( np_find_name(exclude_fstype, "iso9660") == false, "iso9660 not in list");
         np_add_name(&exclude_fstype, "iso9660");
-        ok( np_find_name(exclude_fstype, "iso9660") == TRUE, "is in list now");
+        ok( np_find_name(exclude_fstype, "iso9660") == true, "is in list now");
 
-        ok( np_find_name(exclude_filesystem, "iso9660") == FALSE, "Make sure no clashing in variables");
+        ok( np_find_name(exclude_filesystem, "iso9660") == false, "Make sure no clashing in variables");
 
         /*
         for (temp_name = exclude_filesystem; temp_name; temp_name = temp_name->next) {
@@ -120,7 +120,7 @@ main (int argc, char **argv)
         np_add_parameter(&paths, "/home/tonvoon");
         np_add_parameter(&paths, "/dev/c2t0d0s0");
 
-        np_set_best_match(paths, dummy_mount_list, FALSE);
+        np_set_best_match(paths, dummy_mount_list, false);
         for (p = paths; p; p = p->name_next) {
                 struct mount_entry *temp_me;
                 temp_me = p->best_match;
@@ -144,7 +144,7 @@ main (int argc, char **argv)
         np_add_parameter(&paths, "/home/tonvoon");
         np_add_parameter(&paths, "/home");
 
-        np_set_best_match(paths, dummy_mount_list, TRUE);
+        np_set_best_match(paths, dummy_mount_list, true);
         for (p = paths; p; p = p->name_next) {
                 if (! strcmp(p->name, "/home/groups")) {
                         ok( ! p->best_match , "/home/groups correctly not found");
@@ -167,7 +167,7 @@ main (int argc, char **argv)
         }
         ok(found == 0, "first element successfully deleted");
         found = 0;
-        
+
         p=paths;
         while (p) {
                 if (! strcmp(p->name, "/tmp"))
@@ -203,9 +203,9 @@ main (int argc, char **argv)
 }
 
 
-void 
+void
 np_test_mount_entry_regex (struct mount_entry *dummy_mount_list, char *regstr, int cflags, int expect, char *desc)
-{       
+{
         int matches = 0;
         regex_t re;
         struct mount_entry *me;
@@ -214,7 +214,7 @@ np_test_mount_entry_regex (struct mount_entry *dummy_mount_list, char *regstr, i
                         if(np_regex_match_mount_entry(me,&re))
                                 matches++;
                 }
-                ok( matches == expect, 
+                ok( matches == expect,
                     "%s '%s' matched %i/3 entries. ok: %i/3",
                     desc, regstr, expect, matches);
 
diff --git a/lib/tests/test_ini1.c b/lib/tests/test_ini1.c
index 77f88549..6843bac2 100644
--- a/lib/tests/test_ini1.c
+++ b/lib/tests/test_ini1.c
@@ -1,19 +1,19 @@
 /*****************************************************************************
-* 
+*
 * 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"
diff --git a/lib/tests/test_ini3.c b/lib/tests/test_ini3.c
index 814b3ec0..8a2a0414 100644
--- a/lib/tests/test_ini3.c
+++ b/lib/tests/test_ini3.c
@@ -1,19 +1,19 @@
 /*****************************************************************************
-* 
+*
 * 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 "parse_ini.h"
diff --git a/lib/tests/test_opts2.c b/lib/tests/test_opts2.c
index c3d2067f..780220ee 100644
--- a/lib/tests/test_opts2.c
+++ b/lib/tests/test_opts2.c
@@ -12,7 +12,7 @@
 *
 * 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"
diff --git a/lib/tests/test_tcp.c b/lib/tests/test_tcp.c
index 114252b4..1954b0fb 100644
--- a/lib/tests/test_tcp.c
+++ b/lib/tests/test_tcp.c
@@ -1,19 +1,19 @@
 /*****************************************************************************
-* 
+*
 * 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"
@@ -33,7 +33,7 @@ main(void)
         server_expect[0] = strdup("AA");
         server_expect[1] = strdup("bb");
         server_expect[2] = strdup("CC");
-        
+
         ok(np_expect_match("AA bb CC XX", server_expect, server_expect_count, NP_MATCH_EXACT) == NP_MATCH_SUCCESS,
            "Test matching any string at the beginning (first expect string)");
         ok(np_expect_match("bb AA CC XX", server_expect, server_expect_count, NP_MATCH_EXACT) == NP_MATCH_SUCCESS,
@@ -52,7 +52,7 @@ main(void)
            "Test not matching all strings");
         ok(np_expect_match("XX XX", server_expect, server_expect_count, NP_MATCH_ALL) == NP_MATCH_RETRY,
            "Test not matching any string (testing all)");
-         
+
 
         return exit_status();
 }
diff --git a/lib/tests/test_utils.c b/lib/tests/test_utils.c
index 7b10494c..01afacdc 100644
--- a/lib/tests/test_utils.c
+++ b/lib/tests/test_utils.c
@@ -1,19 +1,19 @@
 /*****************************************************************************
-* 
+*
 * 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"
@@ -62,99 +62,99 @@ main (int argc, char **argv)
         range = parse_range_string("6");
         ok( range != NULL, "'6' is valid range");
         ok( range->start == 0, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
         ok( range->end == 6, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         free(range);
 
         range = parse_range_string("1:12%%");
         ok( range != NULL, "'1:12%%' is valid - percentages are ignored");
         ok( range->start == 1, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
         ok( range->end == 12, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         free(range);
 
         range = parse_range_string("-7:23");
         ok( range != NULL, "'-7:23' is valid range");
         ok( range->start == -7, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
         ok( range->end == 23, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         free(range);
 
         range = parse_range_string(":5.75");
         ok( range != NULL, "':5.75' is valid range");
         ok( range->start == 0, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
         ok( range->end == 5.75, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         free(range);
 
         range = parse_range_string("~:-95.99");
         ok( range != NULL, "~:-95.99' is valid range");
-        ok( range->start_infinity == TRUE, "Using negative infinity");
+        ok( range->start_infinity == true, "Using negative infinity");
         ok( range->end == -95.99, "End correct (with rounding errors)");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         free(range);
 
         range = parse_range_string("12345678901234567890:");
         temp = atof("12345678901234567890");            /* Can't just use this because number too large */
         ok( range != NULL, "'12345678901234567890:' is valid range");
         ok( range->start == temp, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
-        ok( range->end_infinity == TRUE, "Using infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
+        ok( range->end_infinity == true, "Using infinity");
         /* Cannot do a "-1" on temp, as it appears to be same value */
-        ok( check_range(temp/1.1, range) == TRUE, "12345678901234567890/1.1 - alert");
-        ok( check_range(temp, range) == FALSE, "12345678901234567890 - no alert");
-        ok( check_range(temp*2, range) == FALSE, "12345678901234567890*2 - no alert");
+        ok( check_range(temp/1.1, range) == true, "12345678901234567890/1.1 - alert");
+        ok( check_range(temp, range) == false, "12345678901234567890 - no alert");
+        ok( check_range(temp*2, range) == false, "12345678901234567890*2 - no alert");
         free(range);
 
         range = parse_range_string("~:0");
         ok( range != NULL, "'~:0' is valid range");
-        ok( range->start_infinity == TRUE, "Using negative infinity");
+        ok( range->start_infinity == true, "Using negative infinity");
         ok( range->end == 0, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         ok( range->alert_on == OUTSIDE, "Will alert on outside of this range");
-        ok( check_range(0.5, range) == TRUE, "0.5 - alert");
-        ok( check_range(-10, range) == FALSE, "-10 - no alert");
-        ok( check_range(0, range)   == FALSE, "0 - no alert");
+        ok( check_range(0.5, range) == true, "0.5 - alert");
+        ok( check_range(-10, range) == false, "-10 - no alert");
+        ok( check_range(0, range)   == false, "0 - no alert");
         free(range);
-        
+
         range = parse_range_string("@0:657.8210567");
         ok( range != 0, "@0:657.8210567' is a valid range");
         ok( range->start == 0, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
         ok( range->end == 657.8210567, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         ok( range->alert_on == INSIDE, "Will alert on inside of this range" );
-        ok( check_range(32.88, range) == TRUE, "32.88 - alert");
-        ok( check_range(-2, range)    == FALSE, "-2 - no alert");
-        ok( check_range(657.8210567, range) == TRUE, "657.8210567 - alert");
-        ok( check_range(0, range)     == TRUE, "0 - alert");
+        ok( check_range(32.88, range) == true, "32.88 - alert");
+        ok( check_range(-2, range)    == false, "-2 - no alert");
+        ok( check_range(657.8210567, range) == true, "657.8210567 - alert");
+        ok( check_range(0, range)     == true, "0 - alert");
         free(range);
 
         range = parse_range_string("@1:1");
         ok( range != NULL, "'@1:1' is a valid range");
         ok( range->start == 1, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
         ok( range->end == 1, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
+        ok( range->end_infinity == false, "Not using infinity");
         ok( range->alert_on == INSIDE, "Will alert on inside of this range" );
-        ok( check_range(0.5, range) == FALSE, "0.5 - no alert");
-        ok( check_range(1, range) == TRUE, "1 - alert");
-        ok( check_range(5.2, range) == FALSE, "5.2 - no alert");
+        ok( check_range(0.5, range) == false, "0.5 - no alert");
+        ok( check_range(1, range) == true, "1 - alert");
+        ok( check_range(5.2, range) == false, "5.2 - no alert");
         free(range);
 
         range = parse_range_string("1:1");
         ok( range != NULL, "'1:1' is a valid range");
         ok( range->start == 1, "Start correct");
-        ok( range->start_infinity == FALSE, "Not using negative infinity");
+        ok( range->start_infinity == false, "Not using negative infinity");
         ok( range->end == 1, "End correct");
-        ok( range->end_infinity == FALSE, "Not using infinity");
-        ok( check_range(0.5, range) == TRUE, "0.5 - alert");
-        ok( check_range(1, range) == FALSE, "1 - no alert");
-        ok( check_range(5.2, range) == TRUE, "5.2 - alert");
+        ok( range->end_infinity == false, "Not using infinity");
+        ok( check_range(0.5, range) == true, "0.5 - alert");
+        ok( check_range(1, range) == false, "1 - no alert");
+        ok( check_range(5.2, range) == true, "5.2 - alert");
         free(range);
 
         range = parse_range_string("2:1");
@@ -377,13 +377,13 @@ main (int argc, char **argv)
 
 /*
         temp_fp = fopen("var/statefile", "r");
-        if (temp_fp==NULL) 
+        if (temp_fp==NULL)
                 printf("Error opening. errno=%d\n", errno);
         printf("temp_fp=%s\n", temp_fp);
-        ok( _np_state_read_file(temp_fp) == TRUE, "Can read state file" );
+        ok( _np_state_read_file(temp_fp) == true, "Can read state file" );
         fclose(temp_fp);
 */
-        
+
         temp_state_key->_filename="var/statefile";
         temp_state_data = np_state_read();
         ok( this_monitoring_plugin->state->state_data!=NULL, "Got state data now" ) || diag("Are you running in right directory? Will get coredump next if not");
@@ -446,20 +446,20 @@ main (int argc, char **argv)
         /* Check time is set to current_time */
         ok(system("cmp var/generated var/statefile > /dev/null")!=0, "Generated file should be different this time");
         ok(this_monitoring_plugin->state->state_data->time-current_time<=1, "Has time generated from current time");
-        
+
 
         /* Don't know how to automatically test this. Need to be able to redefine die and catch the error */
         /*
         temp_state_key->_filename="/dev/do/not/expect/to/be/able/to/write";
         np_state_write_string(0, "Bad file");
         */
-        
+
 
         np_cleanup();
 
         ok(this_monitoring_plugin==NULL, "Free'd this_monitoring_plugin");
 
-        ok(mp_suid() == FALSE, "Test aren't suid");
+        ok(mp_suid() == false, "Test aren't suid");
 
         /* base states with random case */
         char *states[] = {
@@ -508,4 +508,3 @@ main (int argc, char **argv)
 
         return exit_status();
 }
-
diff --git a/lib/utils_base.c b/lib/utils_base.c
index c458cf61..f86efbeb 100644
--- a/lib/utils_base.c
+++ b/lib/utils_base.c
@@ -6,21 +6,21 @@
 * Copyright (c) 2006 Monitoring Plugins Development Team
 *
 * Library of useful functions for plugins
-* 
+*
 *
 * 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/>.
-* 
+*
 *
 *****************************************************************************/
 
@@ -40,7 +40,7 @@ monitoring_plugin *this_monitoring_plugin=NULL;
 unsigned int timeout_state = STATE_CRITICAL;
 unsigned int timeout_interval = DEFAULT_SOCKET_TIMEOUT;
 
-int _np_state_read_file(FILE *);
+bool _np_state_read_file(FILE *);
 
 void np_init( char *plugin_name, int argc, char **argv ) {
         if (this_monitoring_plugin==NULL) {
@@ -105,12 +105,12 @@ die (int result, const char *fmt, ...)
 
 void set_range_start (range *this, double value) {
         this->start = value;
-        this->start_infinity = FALSE;
+        this->start_infinity = false;
 }
 
 void set_range_end (range *this, double value) {
         this->end = value;
-        this->end_infinity = FALSE;
+        this->end_infinity = false;
 }
 
 range
@@ -124,9 +124,9 @@ range
 
         /* Set defaults */
         temp_range->start = 0;
-        temp_range->start_infinity = FALSE;
+        temp_range->start_infinity = false;
         temp_range->end = 0;
-        temp_range->end_infinity = TRUE;
+        temp_range->end_infinity = true;
         temp_range->alert_on = OUTSIDE;
         temp_range->text = strdup(str);
 
@@ -138,7 +138,7 @@ range
         end_str = index(str, ':');
         if (end_str != NULL) {
                 if (str[0] == '~') {
-                        temp_range->start_infinity = TRUE;
+                        temp_range->start_infinity = true;
                 } else {
                         start = strtod(str, NULL);      /* Will stop at the ':' */
                         set_range_start(temp_range, start);
@@ -152,8 +152,8 @@ range
                 set_range_end(temp_range, end);
         }
 
-        if (temp_range->start_infinity == TRUE ||
-                temp_range->end_infinity == TRUE ||
+        if (temp_range->start_infinity == true ||
+                temp_range->end_infinity == true ||
                 temp_range->start <= temp_range->end) {
                 return temp_range;
         }
@@ -223,31 +223,30 @@ void print_thresholds(const char *threshold_name, thresholds *my_threshold) {
         printf("\n");
 }
 
-/* Returns TRUE if alert should be raised based on the range */
-int
-check_range(double value, range *my_range)
+/* Returns true if alert should be raised based on the range */
+bool check_range(double value, range *my_range)
 {
-        int no = FALSE;
-        int yes = TRUE;
+        bool no = false;
+        bool yes = true;
 
         if (my_range->alert_on == INSIDE) {
-                no = TRUE;
-                yes = FALSE;
+                no = true;
+                yes = false;
         }
 
-        if (my_range->end_infinity == FALSE && my_range->start_infinity == FALSE) {
+        if (my_range->end_infinity == false && my_range->start_infinity == false) {
                 if ((my_range->start <= value) && (value <= my_range->end)) {
                         return no;
                 } else {
                         return yes;
                 }
-        } else if (my_range->start_infinity == FALSE && my_range->end_infinity == TRUE) {
+        } else if (my_range->start_infinity == false && my_range->end_infinity == true) {
                 if (my_range->start <= value) {
                         return no;
                 } else {
                         return yes;
                 }
-        } else if (my_range->start_infinity == TRUE && my_range->end_infinity == FALSE) {
+        } else if (my_range->start_infinity == true && my_range->end_infinity == false) {
                 if (value <= my_range->end) {
                         return no;
                 } else {
@@ -263,12 +262,12 @@ int
 get_status(double value, thresholds *my_thresholds)
 {
         if (my_thresholds->critical != NULL) {
-                if (check_range(value, my_thresholds->critical) == TRUE) {
+                if (check_range(value, my_thresholds->critical) == true) {
                         return STATE_CRITICAL;
                 }
         }
         if (my_thresholds->warning != NULL) {
-                if (check_range(value, my_thresholds->warning) == TRUE) {
+                if (check_range(value, my_thresholds->warning) == true) {
                         return STATE_WARNING;
                 }
         }
@@ -332,7 +331,7 @@ char *np_extract_value(const char *varlist, const char *name, char sep) {
                                 /* strip leading spaces */
                                 for (; isspace(varlist[0]); varlist++);
 
-                                if (tmp = index(varlist, sep)) {
+                                if ((tmp = index(varlist, sep))) {
                                         /* Value is delimited by a comma */
                                         if (tmp-varlist == 0) continue;
                                         value = (char *)calloc(1, tmp-varlist+1);
@@ -348,7 +347,7 @@ char *np_extract_value(const char *varlist, const char *name, char sep) {
                                 break;
                         }
                 }
-                if (tmp = index(varlist, sep)) {
+                if ((tmp = index(varlist, sep))) {
                         /* More keys, keep going... */
                         varlist = tmp + 1;
                 } else {
@@ -402,26 +401,45 @@ int mp_translate_state (char *state_text) {
  * parse of argv, so that uniqueness in parameters are reflected there.
  */
 char *_np_state_generate_key() {
-        struct sha256_ctx ctx;
         int i;
         char **argv = this_monitoring_plugin->argv;
-        unsigned char result[20];
         char keyname[41];
         char *p=NULL;
 
-        sha256_init_ctx(&ctx);
-        
+        unsigned char result[256];
+
+#ifdef USE_OPENSSL
+        /*
+         * This code path is chosen if openssl is available (which should be the most common
+         * scenario). Alternatively, the gnulib implementation/
+         *
+         */
+        EVP_MD_CTX *ctx = EVP_MD_CTX_new();
+
+        EVP_DigestInit(ctx, EVP_sha256());
+
+        for(i=0; i<this_monitoring_plugin->argc; i++) {
+                EVP_DigestUpdate(ctx, argv[i], strlen(argv[i]));
+        }
+
+        EVP_DigestFinal(ctx, result, NULL);
+#else
+
+        struct sha256_ctx ctx;
+
         for(i=0; i<this_monitoring_plugin->argc; i++) {
                 sha256_process_bytes(argv[i], strlen(argv[i]), &ctx);
         }
 
-        sha256_finish_ctx(&ctx, &result);
-        
+        sha256_finish_ctx(&ctx, result);
+#endif // FOUNDOPENSSL
+
         for (i=0; i<20; ++i) {
                 sprintf(&keyname[2*i], "%02x", result[i]);
         }
+
         keyname[40]='\0';
-        
+
         p = strdup(keyname);
         if(p==NULL) {
                 die(STATE_UNKNOWN, _("Cannot execute strdup: %s"), strerror(errno));
@@ -446,7 +464,7 @@ char* _np_state_calculate_location_prefix(){
 
         /* Do not allow passing MP_STATE_PATH in setuid plugins
          * for security reasons */
-        if (mp_suid() == FALSE) {
+        if (!mp_suid()) {
                 env_dir = getenv("MP_STATE_PATH");
                 if(env_dir && env_dir[0] != '\0')
                         return env_dir;
@@ -522,7 +540,7 @@ void np_enable_state(char *keyname, int expected_data_version) {
 state_data *np_state_read() {
         state_data *this_state_data=NULL;
         FILE *statefile;
-        int rc = FALSE;
+        bool rc = false;
 
         if(this_monitoring_plugin==NULL)
                 die(STATE_UNKNOWN, _("This requires np_init to be called"));
@@ -544,7 +562,7 @@ state_data *np_state_read() {
                 fclose(statefile);
         }
 
-        if(rc==FALSE) {
+        if(!rc) {
                 _cleanup_state_data();
         }
 
@@ -554,8 +572,8 @@ state_data *np_state_read() {
 /*
  * Read the state file
  */
-int _np_state_read_file(FILE *f) {
-        int status=FALSE;
+bool _np_state_read_file(FILE *f) {
+        bool status = false;
         size_t pos;
         char *line;
         int i;
@@ -609,7 +627,7 @@ int _np_state_read_file(FILE *f) {
                                 if(this_monitoring_plugin->state->state_data->data==NULL)
                                         die(STATE_UNKNOWN, _("Cannot execute strdup: %s"), strerror(errno));
                                 expected=STATE_DATA_END;
-                                status=TRUE;
+                                status=true;
                                 break;
                         case STATE_DATA_END:
                                 ;
@@ -621,10 +639,10 @@ int _np_state_read_file(FILE *f) {
 }
 
 /*
- * If time=NULL, use current time. Create state file, with state format 
- * version, default text. Writes version, time, and data. Avoid locking 
- * problems - use mv to write and then swap. Possible loss of state data if 
- * two things writing to same key at same time. 
+ * If time=NULL, use current time. Create state file, with state format
+ * version, default text. Writes version, time, and data. Avoid locking
+ * problems - use mv to write and then swap. Possible loss of state data if
+ * two things writing to same key at same time.
  * Will die with UNKNOWN if errors
  */
 void np_state_write_string(time_t data_time, char *data_string) {
@@ -639,7 +657,7 @@ void np_state_write_string(time_t data_time, char *data_string) {
                 time(&current_time);
         else
                 current_time=data_time;
-        
+
         /* If file doesn't currently exist, create directories */
         if(access(this_monitoring_plugin->state->_filename,F_OK)!=0) {
                 result = asprintf(&directories, "%s", this_monitoring_plugin->state->_filename);
@@ -678,15 +696,15 @@ void np_state_write_string(time_t data_time, char *data_string) {
                 np_free(temp_file);
                 die(STATE_UNKNOWN, _("Unable to open temporary state file"));
         }
-        
+
         fprintf(fp,"# NP State file\n");
         fprintf(fp,"%d\n",NP_STATE_FORMAT_VERSION);
         fprintf(fp,"%d\n",this_monitoring_plugin->state->data_version);
         fprintf(fp,"%lu\n",current_time);
         fprintf(fp,"%s\n",data_string);
-        
+
         fchmod(fd, S_IRUSR | S_IWUSR | S_IRGRP);
-        
+
         fflush(fp);
 
         result=fclose(fp);
diff --git a/lib/utils_base.h b/lib/utils_base.h
index 59065504..80b87435 100644
--- a/lib/utils_base.h
+++ b/lib/utils_base.h
@@ -2,9 +2,11 @@
 #define _UTILS_BASE_
 /* Header file for Monitoring Plugins utils_base.c */
 
-#include "sha256.h"
+#ifndef USE_OPENSSL
+# include "sha256.h"
+#endif
 
-/* This file holds header information for thresholds - use this in preference to 
+/* This file holds header information for thresholds - use this in preference to
    individual plugin logic */
 
 /* This has not been merged with utils.h because of problems with
@@ -19,7 +21,7 @@
 
 typedef struct range_struct {
         double  start;
-        int     start_infinity;         /* FALSE (default) or TRUE */
+        bool start_infinity;
         double  end;
         int     end_infinity;
         int     alert_on;               /* OUTSIDE (default) or INSIDE */
@@ -59,7 +61,7 @@ range *parse_range_string (char *);
 int _set_thresholds(thresholds **, char *, char *);
 void set_thresholds(thresholds **, char *, char *);
 void print_thresholds(const char *, thresholds *);
-int check_range(double, range *);
+bool check_range(double, range *);
 int get_status(double, thresholds *);
 
 /* Handle timeouts */
@@ -77,7 +79,7 @@ void die (int, const char *, ...) __attribute__((noreturn,format(printf, 2, 3)))
 #define NP_RANGE_UNPARSEABLE 1
 #define NP_WARN_WITHIN_CRIT 2
 
-/* a simple check to see if we're running as root.  
+/* a simple check to see if we're running as root.
  * returns zero on failure, nonzero on success */
 int np_check_if_root(void);
 
diff --git a/lib/utils_cmd.c b/lib/utils_cmd.c
index 8b8e5708..cfb2073c 100644
--- a/lib/utils_cmd.c
+++ b/lib/utils_cmd.c
@@ -18,18 +18,18 @@
 * Care has been taken to make sure the functions are async-safe. The one
 * function which isn't is cmd_init() which it doesn't make sense to
 * call twice anyway, so the api as a whole should be considered async-safe.
-* 
-* 
+*
+*
 * 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/>.
 *
@@ -42,7 +42,20 @@
 #include "common.h"
 #include "utils.h"
 #include "utils_cmd.h"
+/* This variable must be global, since there's no way the caller
+ * can forcibly slay a dead or ungainly running program otherwise.
+ * Multithreading apps and plugins can initialize it (via CMD_INIT)
+ * in an async safe manner PRIOR to calling cmd_run() or cmd_run_array()
+ * for the first time.
+ *
+ * The check for initialized values is atomic and can
+ * occur in any number of threads simultaneously. */
+static pid_t *_cmd_pids = NULL;
+
 #include "utils_base.h"
+
+#include "./maxfd.h"
+
 #include <fcntl.h>
 
 #ifdef HAVE_SYS_WAIT_H
@@ -86,13 +99,7 @@ extern void die (int, const char *, ...)
 void
 cmd_init (void)
 {
-#ifndef maxfd
-        if (!maxfd && (maxfd = sysconf (_SC_OPEN_MAX)) < 0) {
-                /* possibly log or emit a warning here, since there's no
-                 * guarantee that our guess at maxfd will be adequate */
-                maxfd = DEFAULT_MAXFD;
-        }
-#endif
+        long maxfd = mp_open_max();
 
         /* if maxfd is unnaturally high, we force it to a lower value
          * ( e.g. on SunOS, when ulimit is set to unlimited: 2147483647 this would cause
@@ -118,10 +125,6 @@ _cmd_open (char *const *argv, int *pfd, int *pfderr)
 
         int i = 0;
 
-        /* if no command was passed, return with no error */
-        if (argv == NULL)
-                return -1;
-
         if (!_cmd_pids)
                 CMD_INIT;
 
@@ -152,6 +155,7 @@ _cmd_open (char *const *argv, int *pfd, int *pfderr)
                 /* close all descriptors in _cmd_pids[]
                  * This is executed in a separate address space (pure child),
                  * so we don't have to worry about async safety */
+                long maxfd = mp_open_max();
                 for (i = 0; i < maxfd; i++)
                         if (_cmd_pids[i] > 0)
                                 close (i);
@@ -178,6 +182,7 @@ _cmd_close (int fd)
         pid_t pid;
 
         /* make sure the provided fd was opened */
+        long maxfd = mp_open_max();
         if (fd < 0 || fd > maxfd || !_cmd_pids || (pid = _cmd_pids[fd]) == 0)
                 return -1;
 
@@ -269,7 +274,6 @@ _cmd_fetch_output (int fd, output * op, int flags)
 int
 cmd_run (const char *cmdstring, output * out, output * err, int flags)
 {
-        int fd, pfd_out[2], pfd_err[2];
         int i = 0, argc;
         size_t cmdlen;
         char **argv = NULL;
@@ -373,10 +377,10 @@ cmd_file_read ( char *filename, output *out, int flags)
         if ((fd = open(filename, O_RDONLY)) == -1) {
                 die( STATE_UNKNOWN, _("Error opening %s: %s"), filename, strerror(errno) );
         }
-        
+
         if(out)
                 out->lines = _cmd_fetch_output (fd, out, flags);
-        
+
         if (close(fd) == -1)
                 die( STATE_UNKNOWN, _("Error closing %s: %s"), filename, strerror(errno) );
 
@@ -391,6 +395,7 @@ timeout_alarm_handler (int signo)
                 printf (_("%s - Plugin timed out after %d seconds\n"),
                                                 state_text(timeout_state), timeout_interval);
 
+                long maxfd = mp_open_max();
                 if(_cmd_pids) for(i = 0; i < maxfd; i++) {
                         if(_cmd_pids[i] != 0) kill(_cmd_pids[i], SIGKILL);
                 }
diff --git a/lib/utils_cmd.h b/lib/utils_cmd.h
index 6f3aeb81..061f5d4f 100644
--- a/lib/utils_cmd.h
+++ b/lib/utils_cmd.h
@@ -1,10 +1,10 @@
 #ifndef _UTILS_CMD_
 #define _UTILS_CMD_
 
-/* 
+/*
  * Header file for Monitoring Plugins utils_cmd.c
- * 
- * 
+ *
+ *
  */
 
 /** types **/
@@ -32,17 +32,8 @@ void cmd_init (void);
 #define CMD_NO_ARRAYS 0x01   /* don't populate arrays at all */
 #define CMD_NO_ASSOC 0x02    /* output.line won't point to buf */
 
-/* This variable must be global, since there's no way the caller
- * can forcibly slay a dead or ungainly running program otherwise.
- * Multithreading apps and plugins can initialize it (via CMD_INIT)
- * in an async safe manner PRIOR to calling cmd_run() or cmd_run_array()
- * for the first time.
- *
- * The check for initialized values is atomic and can
- * occur in any number of threads simultaneously. */
-static pid_t *_cmd_pids = NULL;
 
-RETSIGTYPE timeout_alarm_handler (int);
+void timeout_alarm_handler (int);
 
 
 #endif /* _UTILS_CMD_ */
diff --git a/lib/utils_disk.c b/lib/utils_disk.c
index 582d3ea1..483be06d 100644
--- a/lib/utils_disk.c
+++ b/lib/utils_disk.c
@@ -1,34 +1,35 @@
 /*****************************************************************************
-* 
+*
 * Library for check_disk
-* 
+*
 * License: GPL
 * Copyright (c) 1999-2007 Monitoring Plugins Development Team
-* 
+*
 * Description:
-* 
+*
 * This file contains utilities for check_disk. These are tested by libtap
-* 
-* 
+*
+*
 * 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"
 #include "utils_disk.h"
 #include "gl/fsusage.h"
+#include <string.h>
 
 void
 np_add_name (struct name_list **list, const char *name)
@@ -40,6 +41,42 @@ np_add_name (struct name_list **list, const char *name)
   *list = new_entry;
 }
 
+/* @brief Initialises a new regex at the begin of list via regcomp(3)
+ *
+ * @details if the regex fails to compile the error code of regcomp(3) is returned
+ *                                      and list is not modified, otherwise list is modified to point to the new
+ *                                      element
+ * @param list Pointer to a linked list of regex_list elements
+ * @param regex the string containing the regex which should be inserted into the list
+ * @param clags the cflags parameter for regcomp(3)
+ */
+int
+np_add_regex (struct regex_list **list, const char *regex, int cflags)
+{
+  struct regex_list *new_entry = (struct regex_list *) malloc (sizeof *new_entry);
+
+        if (new_entry == NULL) {
+                die(STATE_UNKNOWN, _("Cannot allocate memory: %s"),
+                                strerror(errno));
+        }
+
+  int regcomp_result = regcomp(&new_entry->regex, regex, cflags);
+
+        if (!regcomp_result) {
+                // regcomp succeeded
+                new_entry->next = *list;
+                *list = new_entry;
+
+                return 0;
+        } else {
+                // regcomp failed
+                free(new_entry);
+
+                return regcomp_result;
+        }
+
+}
+
 /* Initialises a new parameter at the end of list */
 struct parameter_list *
 np_add_parameter(struct parameter_list **list, const char *name)
@@ -61,7 +98,7 @@ np_add_parameter(struct parameter_list **list, const char *name)
   new_path->freeinodes_percent = NULL;
   new_path->group = NULL;
   new_path->dfree_pct = -1;
-  new_path->dused_pct = -1; 
+  new_path->dused_pct = -1;
   new_path->total = 0;
   new_path->available = 0;
   new_path->available_to_root = 0;
@@ -133,9 +170,7 @@ np_find_parameter(struct parameter_list *list, const char *name)
   return NULL;
 }
 
-void
-np_set_best_match(struct parameter_list *desired, struct mount_entry *mount_list, int exact)
-{
+void np_set_best_match(struct parameter_list *desired, struct mount_entry *mount_list, bool exact) {
   struct parameter_list *d;
   for (d = desired; d; d= d->name_next) {
     if (! d->best_match) {
@@ -158,9 +193,9 @@ np_set_best_match(struct parameter_list *desired, struct mount_entry *mount_list
       if (! best_match) {
         for (me = mount_list; me; me = me->me_next) {
           size_t len = strlen (me->me_mountdir);
-          if ((exact == FALSE && (best_match_len <= len && len <= name_len &&
+          if ((!exact && (best_match_len <= len && len <= name_len &&
              (len == 1 || strncmp (me->me_mountdir, d->name, len) == 0)))
-             || (exact == TRUE && strcmp(me->me_mountdir, d->name)==0))
+             || (exact && strcmp(me->me_mountdir, d->name)==0))
           {
             if (get_fs_usage(me->me_mountdir, me->me_devname, &fsp) >= 0) {
               best_match = me;
@@ -179,43 +214,57 @@ np_set_best_match(struct parameter_list *desired, struct mount_entry *mount_list
   }
 }
 
-/* Returns TRUE if name is in list */
-int
-np_find_name (struct name_list *list, const char *name)
-{
+/* Returns true if name is in list */
+bool np_find_name (struct name_list *list, const char *name) {
   const struct name_list *n;
 
   if (list == NULL || name == NULL) {
-    return FALSE;
+    return false;
   }
   for (n = list; n; n = n->next) {
     if (!strcmp(name, n->name)) {
-      return TRUE;
+      return true;
     }
   }
-  return FALSE;
+  return false;
 }
 
-int
-np_seen_name(struct name_list *list, const char *name)
-{
+/* Returns true if name is in list */
+bool np_find_regmatch (struct regex_list *list, const char *name) {
+  int len;
+  regmatch_t m;
+
+  if (name == NULL) {
+    return false;
+  }
+
+  len = strlen(name);
+
+  for (; list; list = list->next) {
+    /* Emulate a full match as if surrounded with ^( )$
+       by checking whether the match spans the whole name */
+    if (!regexec(&list->regex, name, 1, &m, 0) && m.rm_so == 0 && m.rm_eo == len) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool np_seen_name(struct name_list *list, const char *name) {
   const struct name_list *s;
   for (s = list; s; s=s->next) {
     if (!strcmp(s->name, name)) {
-      return TRUE;
+      return true;
     }
   }
-  return FALSE;
+  return false;
 }
 
-int
-np_regex_match_mount_entry (struct mount_entry* me, regex_t* re)
-{
+bool np_regex_match_mount_entry (struct mount_entry* me, regex_t* re) {
   if (regexec(re, me->me_devname, (size_t) 0, NULL, 0) == 0 ||
       regexec(re, me->me_mountdir, (size_t) 0, NULL, 0) == 0 ) {
-    return TRUE;
-  } else {
-    return FALSE;
+    return true;
   }
+        return false;
 }
-
diff --git a/lib/utils_disk.h b/lib/utils_disk.h
index 3b5a45f8..5b2caf23 100644
--- a/lib/utils_disk.h
+++ b/lib/utils_disk.h
@@ -10,6 +10,12 @@ struct name_list
   struct name_list *next;
 };
 
+struct regex_list
+{
+  regex_t regex;
+  struct regex_list *next;
+};
+
 struct parameter_list
 {
   char *name;
@@ -33,12 +39,14 @@ struct parameter_list
 };
 
 void np_add_name (struct name_list **list, const char *name);
-int np_find_name (struct name_list *list, const char *name);
-int np_seen_name (struct name_list *list, const char *name);
+bool np_find_name (struct name_list *list, const char *name);
+bool np_seen_name (struct name_list *list, const char *name);
+int np_add_regex (struct regex_list **list, const char *regex, int cflags);
+bool np_find_regmatch (struct regex_list *list, const char *name);
 struct parameter_list *np_add_parameter(struct parameter_list **list, const char *name);
 struct parameter_list *np_find_parameter(struct parameter_list *list, const char *name);
 struct parameter_list *np_del_parameter(struct parameter_list *item, struct parameter_list *prev);
-  
+
 int search_parameter_list (struct parameter_list *list, const char *name);
-void np_set_best_match(struct parameter_list *desired, struct mount_entry *mount_list, int exact);
-int np_regex_match_mount_entry (struct mount_entry* me, regex_t* re);
+void np_set_best_match(struct parameter_list *desired, struct mount_entry *mount_list, bool exact);
+bool np_regex_match_mount_entry (struct mount_entry* me, regex_t* re);
diff --git a/lib/utils_tcp.c b/lib/utils_tcp.c
index b37c446f..23ee4a95 100644
--- a/lib/utils_tcp.c
+++ b/lib/utils_tcp.c
@@ -1,29 +1,29 @@
 /*****************************************************************************
-* 
+*
 * Library for check_tcp
-* 
+*
 * License: GPL
 * Copyright (c) 1999-2013 Monitoring Plugins Development Team
-* 
+*
 * Description:
-* 
+*
 * This file contains utilities for check_tcp. These are tested by libtap
-* 
-* 
+*
+*
 * 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"