check_pgsql: Allow UNIX socket directories as hostname as well.

PostgreSQL accepts the directory name of its UNIX socket as hostname as well,
e.g. /var/run/postgresql/.

diff --git a/plugins/check_pgsql.c b/plugins/check_pgsql.c
index b2e1876f1801605a4fafc2d28d415c2c940f932b..6251e0b21ed199f02639e8dedfbc0da69bbf0eec 100644 (file)
--- a/plugins/check_pgsql.c
+++ b/plugins/check_pgsql.c
@@ -321,7 +321,7 @@ process_arguments (int argc, char **argv)
                        query_warning = optarg;
                        break;
                case 'H':     /* host */
-                       if (!is_host (optarg))
+                       if ((*optarg != '/') && (!is_host (optarg)))
                                usage2 (_("Invalid hostname/address"), optarg);
                        else
                                pghost = optarg;