fix(packaging): an upgrade reloads every user's systemd and restarts a running node

The node runs as a user service; the system-wide daemon-reload did not reach
the user managers, so systemctl warned that the unit had changed and the old
code kept running until restarted by hand. The deb postinst and the rpm
%posttrans reload each running user manager and try-restart the node there
(and any meshbay-node@ instance) on an upgrade.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/packaging/rpm/meshbay-node.spec b/packaging/rpm/meshbay-node.spec
index 1ba7f26..9b9c6bf 100644
--- a/packaging/rpm/meshbay-node.spec
+++ b/packaging/rpm/meshbay-node.spec
@@ -35,6 +35,40 @@ if [ -d /run/systemd/system ]; then
     systemctl daemon-reload || true
 fi
 
+# After the whole transaction, so that meshbay-common is in place too. A
+# marker left by %pre says whether this was an upgrade.
+%pre
+if [ "$1" -ge 2 ]; then
+    touch /run/meshbay-node-upgrade 2>/dev/null || true
+fi
+
+%posttrans
+# The node runs as a user service, in every signed-in user's own systemd
+# manager: the system-wide reload does not reach those, and each would keep
+# the old unit and the old code until restarted by hand. Every running user
+# manager reloads, and restarts the node where it was running.
+reload_user_managers() {
+    for bus in /run/user/*/systemd/private; do
+        [ -S "$bus" ] || continue
+        uid=$(basename "$(dirname "$(dirname "$bus")")")
+        user=$(id -nu "$uid" 2>/dev/null) || continue
+        systemctl --user -M "$user@" daemon-reload 2>/dev/null || true
+        [ -n "$upgraded" ] && systemctl --user -M "$user@" try-restart meshbay-node.service 2>/dev/null || true
+    done
+}
+upgraded=
+if [ -e /run/meshbay-node-upgrade ]; then
+    upgraded=1
+    rm -f /run/meshbay-node-upgrade
+fi
+if [ -d /run/systemd/system ]; then
+    systemctl daemon-reload || true
+    if [ -n "$upgraded" ]; then
+        systemctl try-restart 'meshbay-node@*.service' 2>/dev/null || true
+    fi
+    reload_user_managers
+fi
+
 %preun
 if [ -d /run/systemd/system ]; then
     systemctl daemon-reload || true