move device managers to hooks

hooks/eudev/eudev

@@ -0,0 +1,24 @@
+# vim: set ft=sh:
+# shellcheck shell=sh
+#
+# false positive
+# shellcheck disable=2154
+#
+# handle_eudev()
+{
+    print "configuring eudev"
+
+    for _binary in udevd udevadm; do
+        copy_binary "$_binary"
+    done
+
+    mkdir -p "${tmpdir}/lib/udev/rules.d"
+
+    printf "%s\n" \
+        'SUBSYSTEMS=="block", ACTION=="add", RUN+="/bin/device-helper"' \
+    > "${tmpdir}/lib/udev/rules.d/device-helper.rules"
+
+    [ "$monolith" = 1 ] || printf "%s\n" \
+        'ENV{MODALIAS}=="?*", ACTION=="add", RUN+="/bin/modprobe %E{MODALIAS}"' \
+    >> "${tmpdir}/lib/udev/rules.d/device-helper.rules"
+}

hooks/eudev/eudev.init

@@ -0,0 +1,15 @@
+# vim: set ft=sh:
+# shellcheck shell=sh
+#
+# false positive
+# shellcheck disable=2154,2034
+#
+# run_eudev()
+{
+    [ "$break" = devmgr ] && { print "break before run_eudev()"; sh; }
+
+    udevd -N never & eudev_pid="$!"
+    udevadm trigger -c add -t subsystems
+    udevadm trigger -c add -t devices
+    udevadm settle
+}

hooks/eudev/eudev.init.late

@@ -0,0 +1,10 @@
+# vim: set ft=sh:
+# shellcheck shell=sh
+#
+# false positive
+# shellcheck disable=2154
+#
+# stop_eudev()
+{
+    kill "$eudev_pid"
+}