From 84e2317aef685da5ba32268db0d9abe7b9799362 Mon Sep 17 00:00:00 2001
From: Petr Menšík <pemensik@redhat.com>
Date: Jan 21 2021 12:06:07 +0000
Subject: Increase open files limit for unit tests


On machines with high CPU cores, few lib/ns unit tests fail due to not
enough file descriptors. Increase limit, it would be set higher on 40+
core machines anyway.

---

diff --git a/bind.spec b/bind.spec
index 989efb9..0ce9484 100644
--- a/bind.spec
+++ b/bind.spec
@@ -598,12 +598,15 @@ export TSAN_OPTIONS="log_exe_name=true log_path=ThreadSanitizer exitcode=0"
 
 %if %{with UNITTEST}
   pushd build
+  ORIGFILES=$(ulimit -n)
+  ulimit -n 4096 # Requires on some machines with many cores
   make unit
   e=$?
   if [ "$e" -ne 0 ]; then
     echo "ERROR: this build of BIND failed 'make unit'. Aborting."
     exit $e;
   fi;
+  ulimit -n $ORIGFILES
   popd
 ## End of UNITTEST
 %endif