From b8c0bffc413e8a34e646d12bbd94fec9cfd00c17 Mon Sep 17 00:00:00 2001
From: Aaron <amark@g.jct.ac.il>
Date: Fri, 4 Sep 2026 10:33:06 +0300
Subject: [PATCH] fix(install): make binary install atomic

Use a temp directory under ~/.linkerd2 so mv to the install
destination stays on the same filesystem.

Fixes linkerd/website#90

Signed-off-by: amarkdotdev <amark@g.jct.ac.il>
Signed-off-by: Aaron <amark@g.jct.ac.il>
---
 run.linkerd.io/public/install | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/run.linkerd.io/public/install b/run.linkerd.io/public/install
index dd2cd53206..6f70bc8100 100755
--- a/run.linkerd.io/public/install
+++ b/run.linkerd.io/public/install
@@ -96,7 +96,12 @@ case $OS in
 esac
 OS=$(echo "$OS" | tr '[:upper:]' '[:lower:]')
 
-tmpdir=$(mktemp -d /tmp/linkerd2.XXXXXX)
+mkdir -p "${INSTALLROOT}"
+for d in "${INSTALLROOT}"/linkerd2.*; do
+  [ -d "$d" ] || continue
+  rm -rf "$d"
+done
+tmpdir=$(mktemp -d "${INSTALLROOT}/linkerd2.XXXXXX")
 srcfile="linkerd2-cli-${LINKERD2_VERSION}-${OS}"
 if [ -n "${cli_arch}" ]; then
   srcfile="${srcfile}-${cli_arch}"