From 4bb444f3353fbb49086bd0e212b3cad8009761dd Mon Sep 17 00:00:00 2001
From: "Alexander A. Klimov" <alexander.klimov@icinga.com>
Date: Tue, 12 Sep 2023 14:55:00 +0200
Subject: check_disk: make -X a regex list


diff --git a/plugins/check_disk.c b/plugins/check_disk.c
index 7dc1c4b..e7e9378 100644
--- a/plugins/check_disk.c
+++ b/plugins/check_disk.c
@@ -93,7 +93,7 @@ static int stat_remote_fs = 0;
 
 /* Linked list of filesystem types to omit.
    If the list is empty, don't exclude any types.  */
-static struct name_list *fs_exclude_list;
+static struct regex_list *fs_exclude_list = NULL;
 
 /* Linked list of filesystem types to check.
    If the list is empty, include all types.  */
@@ -300,7 +300,7 @@ main (int argc, char **argv)
       } else if (me->me_dummy && !show_all_fs) {
         continue;
       /* Skip excluded fstypes */
-      } else if (fs_exclude_list && np_find_name (fs_exclude_list, me->me_type)) {
+      } else if (fs_exclude_list && np_find_regmatch (fs_exclude_list, me->me_type)) {
         continue;
       /* Skip excluded fs's */
       } else if (dp_exclude_list &&
@@ -543,7 +543,7 @@ process_arguments (int argc, char **argv)
   if (argc < 2)
     return ERROR;
 
-  np_add_name(&fs_exclude_list, "iso9660");
+  np_add_regex(&fs_exclude_list, "iso9660", REG_EXTENDED);
 
   for (c = 1; c < argc; c++)
     if (strcmp ("-to", argv[c]) == 0)
@@ -716,7 +716,11 @@ process_arguments (int argc, char **argv)
       np_add_name(&dp_exclude_list, optarg);
       break;
     case 'X':                 /* exclude file system type */
-      np_add_name(&fs_exclude_list, optarg);
+      err = np_add_regex(&fs_exclude_list, optarg, REG_EXTENDED);
+      if (err != 0) {
+        regerror (err, &fs_exclude_list->regex, errbuf, MAX_INPUT_BUFFER);
+        die (STATE_UNKNOWN, "DISK %s: %s - %s\n",_("UNKNOWN"), _("Could not compile regular expression"), errbuf);
+      }
       break;
     case 'N':                 /* include file system type */
       np_add_name(&fs_include_list, optarg);
@@ -1003,8 +1007,8 @@ print_help (void)
   printf (" %s\n", "-u, --units=STRING");
   printf ("    %s\n", _("Choose bytes, kB, MB, GB, TB (default: MB)"));
   printf (UT_VERBOSE);
-  printf (" %s\n", "-X, --exclude-type=TYPE");
-  printf ("    %s\n", _("Ignore all filesystems of indicated type (may be repeated)"));
+  printf (" %s\n", "-X, --exclude-type=TYPE_REGEX");
+  printf ("    %s\n", _("Ignore all filesystems of types matching given regex(7) (may be repeated)"));
   printf (" %s\n", "-N, --include-type=TYPE");
   printf ("    %s\n", _("Check only filesystems of indicated type (may be repeated)"));
 
@@ -1037,7 +1041,7 @@ print_usage (void)
   printf ("%s\n", _("Usage:"));
   printf (" %s {-w absolute_limit |-w  percentage_limit%% | -W inode_percentage_limit } {-c absolute_limit|-c percentage_limit%% | -K inode_percentage_limit } {-p path | -x device}\n", progname);
   printf ("[-C] [-E] [-e] [-f] [-g group ] [-k] [-l] [-M] [-m] [-R path ] [-r path ]\n");
-  printf ("[-t timeout] [-u unit] [-v] [-X type] [-N type]\n");
+  printf ("[-t timeout] [-u unit] [-v] [-X type_regex] [-N type]\n");
 }
 
 bool
-- 
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