add new systemd-bless-boot.service that marks boots as successful

This is the counterpiece to the boot counting implemented in
systemd-boot: if a boot is detected as successful we mark drop the
counter again from the booted snippet or kernel image.

2 files changed, 23 insertions, 0 deletions

diff --git a/units/meson.build b/units/meson.build
index 70eabe522..26a725b57 100644
--- a/units/meson.build
+++ b/units/meson.build
@@ -136,6 +136,7 @@ in_units = [
         ['systemd-backlight@.service',           'ENABLE_BACKLIGHT'],
         ['systemd-binfmt.service',               'ENABLE_BINFMT',
          'sysinit.target.wants/'],
+        ['systemd-bless-boot.service',           'ENABLE_EFI HAVE_BLKID'],
         ['systemd-coredump@.service',            'ENABLE_COREDUMP'],
         ['systemd-firstboot.service',            'ENABLE_FIRSTBOOT',
          'sysinit.target.wants/'],
diff --git a/units/systemd-bless-boot.service.in b/units/systemd-bless-boot.service.in
new file mode 100644
index 000000000..511d991d3
--- /dev/null
+++ b/units/systemd-bless-boot.service.in
@@ -0,0 +1,22 @@
+#  SPDX-License-Identifier: LGPL-2.1+
+#
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Mark the Current Boot Loader Entry as Good
+Documentation=man:systemd-bless-boot.service(8)
+DefaultDependencies=no
+Requires=boot-complete.target
+After=local-fs.target boot-complete.target
+Conflicts=shutdown.target
+Before=shutdown.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=@rootlibexecdir@/systemd-bless-boot good