From a97697d86d973e816a7ebec8e813794279a88fbb Mon Sep 17 00:00:00 2001
From: Adrien Ferrand <ferrand.ad@gmail.com>
Date: Thu, 5 Dec 2019 22:11:29 +0100
Subject: [PATCH] Add a wrapper to uname to do tests on fake 32 bits versions

---
 letsencrypt-auto-source/Dockerfile.centos6 | 5 +++++
 letsencrypt-auto-source/uname_wrapper      | 9 +++++++++
 2 files changed, 14 insertions(+)
 create mode 100755 letsencrypt-auto-source/uname_wrapper

diff --git a/letsencrypt-auto-source/Dockerfile.centos6 b/letsencrypt-auto-source/Dockerfile.centos6
index 09aa52dcd..6334c9067 100644
--- a/letsencrypt-auto-source/Dockerfile.centos6
+++ b/letsencrypt-auto-source/Dockerfile.centos6
@@ -30,6 +30,11 @@ RUN update-ca-trust
 # Copy code:
 COPY . /home/lea/certbot/letsencrypt-auto-source
 
+# Tweak uname binary for tests on fake 32bits
+COPY uname_wrapper /bin
+RUN mv /bin/uname /bin/uname_orig \
+ && mv /bin/uname_wrapper /bin/uname
+
 USER lea
 WORKDIR /home/lea
 
diff --git a/letsencrypt-auto-source/uname_wrapper b/letsencrypt-auto-source/uname_wrapper
new file mode 100755
index 000000000..de62e5889
--- /dev/null
+++ b/letsencrypt-auto-source/uname_wrapper
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+uname_output=$(/bin/uname_orig "$@")
+
+if [ "$UNAME_FAKE_32BITS" = true ]; then
+    uname_output="${uname_output/x86_64/i686}"
+fi
+
+echo "$uname_output"