update-helper: also add "user-reexec" verb

This is not called from the systemd.triggers or systemd.macros files. Instead,
it would be called from the scriptlets in systemd rpm package itself, at the
place where we call systemctl daemon-reexec.

See https://github.com/systemd/systemd/pull/20289#issuecomment-885622200 .

1 files changed, 9 insertions, 1 deletions

diff --git a/src/rpm/systemd-update-helper.in b/src/rpm/systemd-update-helper.in
index f3466ab3c0..0c6675a9db 100755
--- a/src/rpm/systemd-update-helper.in
+++ b/src/rpm/systemd-update-helper.in
@@ -74,7 +74,7 @@ case "$command" in
         fi
         ;;
 
-    user-reload-restart|user-reload|user-restart)
+    user-reload-restart|user-reload|user-restart|user-reexec)
         if [ -n "$*" ]; then
             echo "Unexpected arguments for '$command': $*"
             exit 2
@@ -84,6 +84,14 @@ case "$command" in
 
         users=$(systemctl list-units 'user@*' --legend=no | sed -n -r 's/.*user@([0-9]+).service.*/\1/p')
 
+        if [[ "$command" =~ reexec ]]; then
+            for user in $users; do
+                SYSTEMD_BUS_TIMEOUT={{UPDATE_HELPER_USER_TIMEOUT}} \
+                        systemctl --user -M "$user@" daemon-reexec &
+            done
+            wait
+        fi
+
         if [[ "$command" =~ reload ]]; then
             for user in $users; do
                 SYSTEMD_BUS_TIMEOUT={{UPDATE_HELPER_USER_TIMEOUT}} \