1 files changed, 50 insertions, 0 deletions
diff --git a/libre/systemd/systemd.install b/libre/systemd/systemd.install
new file mode 100644
index 000000000..0c3e9abee
--- /dev/null
+++ b/libre/systemd/systemd.install
@@ -0,0 +1,50 @@
+#!/bin/sh
+
+checkgroups() {
+  if ! getent group lock >/dev/null; then
+    groupadd -g 54 lock
+  fi
+}
+
+sd_booted() {
+  [ -e sys/fs/cgroup/systemd ]
+}
+
+post_install() {
+  checkgroups
+
+  if [ ! -f etc/machine-id ]; then
+    systemd-machine-id-setup
+  fi
+
+  echo "systemd has been installed to /bin/systemd. Please ensure you append"
+  echo "init=/bin/systemd to your kernel command line in your bootloader."
+}
+
+post_upgrade() {
+  checkgroups
+
+  if [ ! -f etc/machine-id ]; then
+    systemd-machine-id-setup
+  fi
+
+  if sd_booted; then
+    # we moved the binary in 44-2 to /usr, so a reexec leads to a
+    # coredump. refuse this reexec and warn the user that they should
+    # reboot instead.
+    if [ "$(vercmp 44-2 "$2")" -eq 1 ]; then
+      echo "warning: refusing to reexec systemd. the system should be rebooted."
+    else
+      systemctl daemon-reload
+      systemctl daemon-reexec
+    fi
+  fi
+}
+
+post_remove() {
+  if getent group lock >/dev/null; then
+    groupdel lock
+  fi
+}
+
+# vim:set ts=2 sw=2 et: