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Lennart Poettering 71c8bf2837 boot: optionally update sd-boot on boot 
Boot loaders are software like any other, and hence muse be updated in
regular intervals. Let's add a simple (optional) service that updates
sd-boot automatically from the host if it is found installed but
out-of-date in the ESP.

Note that traditional distros probably should invoke "bootctl update"
directly from the package scripts whenver they update the sd-boot
package. This new service is primarily intended for image-based update
systems, i.e. where the rootfs or /usr are atomically updated in A/B
style and where the current boot loader should be synced into the ESP
from the currently booted image every now and then. It can also act as
safety net if the packaging scripts in classic systems are't doing the
bootctl update stuff themselves.

Since updating boot loaders mit be a tiny bit risky (even though we try
really hard to make them robust, by fsck'ing the ESP and mounting it only on
demand, by doing updates mostly as single file updates and by fsync()ing
heavily) this is an optional feature, i.e. subject to "systemctl
enable". However, since it's the right thing to do I think, it's enabled
by default via the preset logic.

Note that the updating logic is implemented gracefully: i.e. it's a NOP
if the boot loader is already new enough, or was never installed.
2021-07-30 17:19:55 +02:00
..
user meson: drop unnecessary listification 2021-05-19 10:24:43 +09:00
user-.slice.d license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
basic.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
blockdev@.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
bluetooth.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
boot-complete.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
console-getty.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
container-getty@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
cryptsetup-pre.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
cryptsetup.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
debug-shell.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
dev-hugepages.mount license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
dev-mqueue.mount license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
emergency.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
emergency.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
exit.target logind, units: unit Descriptions should be capitalized 2021-06-30 13:25:16 +02:00
final.target units: correct description of final.target 2021-07-02 18:29:54 +02:00
first-boot-complete.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
getty-pre.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
getty.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
getty@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
graphical.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
halt.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
hibernate.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
hybrid-sleep.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-cleanup.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-fs.target units: change order of settings to match order in other similar unit 2021-04-20 19:11:07 +02:00
initrd-parse-etc.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-root-device.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-root-fs.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-switch-root.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-switch-root.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-udevadm-cleanup-db.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
initrd-usr-fs.target fstab-generator: if usr= is specified, mount it to /sysusr/usr/ first 2021-04-20 18:26:17 +02:00
initrd.target fstab-generator: if usr= is specified, mount it to /sysusr/usr/ first 2021-04-20 18:26:17 +02:00
kexec.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
kmod-static-nodes.service.in units: shorten description of kmod-static-nodes.service 2021-06-30 13:25:16 +02:00
ldconfig.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
local-fs-pre.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
local-fs.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
machine.slice license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
machines.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
meson-add-wants.sh tree-wide: add spdx header on all scripts and helpers 2021-01-28 09:55:35 +01:00
meson.build meson: use a/b instead of join_paths(a,b) 2021-07-27 19:32:35 +02:00
modprobe@.service Revert "units: skip modprobe@.service if the unit appears to be already loaded" 2020-11-19 09:49:42 +01:00
multi-user.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
network-online.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
network-pre.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
network.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
nss-lookup.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
nss-user-lookup.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
paths.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
poweroff.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
printer.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
proc-sys-fs-binfmt_misc.automount units: stop automount unit when shutting down 2021-06-07 13:38:28 +02:00
proc-sys-fs-binfmt_misc.mount license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
quotaon.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
rc-local.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
reboot.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
remote-cryptsetup.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
remote-fs-pre.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
remote-fs.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
remote-veritysetup.target veritysetup-generator: add support for veritytab 2021-01-15 11:06:11 -05:00
rescue.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
rescue.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
rpcbind.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
serial-getty@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
shutdown.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
sigpwr.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
sleep.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
slices.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
smartcard.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
sockets.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
sound.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
suspend-then-hibernate.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
suspend.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
swap.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
sys-fs-fuse-connections.mount units: restore sysfs conditions in sys-fs-fuse-connections.mount and sys-kernel-config.mount 2020-11-21 01:10:17 +09:00
sys-kernel-config.mount units: restore sysfs conditions in sys-fs-fuse-connections.mount and sys-kernel-config.mount 2020-11-21 01:10:17 +09:00
sys-kernel-debug.mount license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
sys-kernel-tracing.mount license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
sysinit.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
syslog.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
system-systemd\x2dcryptsetup.slice man: document system-systemd\x2dcryptsetup.slice 2021-04-09 10:38:09 +02:00
system-update-cleanup.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
system-update-pre.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
system-update.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-ask-password-console.path unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-ask-password-console.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-ask-password-wall.path unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-ask-password-wall.service unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-backlight@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-binfmt.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-bless-boot.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-boot-check-no-failures.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-boot-system-token.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-boot-update.service boot: optionally update sd-boot on boot 2021-07-30 17:19:55 +02:00
systemd-coredump.socket systemd-coredump: Add conflict with shutdown.target 2021-04-29 21:45:23 +02:00
systemd-coredump@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-exit.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-firstboot.service Revert "sysusers/firstboot: temporarily disable LoadCredential" 2021-05-03 12:16:35 +09:00
systemd-fsck-root.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-fsck@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-halt.service units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
systemd-hibernate-resume@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-hibernate.service.in unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-homed-activate.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-homed.service.in homed: allow systemd-homed access to FIDO2 devices 2021-07-12 23:35:32 +01:00
systemd-hostnamed.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-hwdb-update.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-hybrid-sleep.service.in unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-importd.service.in units: make sure importd has CAP_LINUX_IMMUTABLE flag 2021-05-22 16:02:02 +09:00
systemd-initctl.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-initctl.socket unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-journal-catalog-update.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-journal-flush.service units: skip some units in the initrd 2021-05-22 15:58:40 +09:00
systemd-journal-gatewayd.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-journal-gatewayd.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-journal-remote.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-journal-remote.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-journal-upload.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-journald-audit.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-journald-dev-log.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-journald-varlink@.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-journald.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-journald.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-journald@.service.in journald: when journald namespace instances log, they can do so safely to the main journald instance 2021-06-09 12:30:22 +09:00
systemd-journald@.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-kexec.service unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-localed.service.in units: generate ReadWritePaths= in the template 2021-05-19 10:25:26 +09:00
systemd-logind.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-machine-id-commit.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-machined.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-modules-load.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-network-generator.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-networkd-wait-online.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-networkd.service.in units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
systemd-networkd.socket systemd-networkd.socket: Add conflict with shutdown.target (#19348) 2021-04-19 11:25:33 +09:00
systemd-nspawn@.service.in units: strip out the developer comment in .service unit again 2021-05-19 10:24:43 +09:00
systemd-oomd.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-portabled.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-poweroff.service units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
systemd-pstore.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-quotacheck.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-random-seed.service.in units: skip some units in the initrd 2021-05-22 15:58:40 +09:00
systemd-reboot.service units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
systemd-remount-fs.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-repart.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-resolved.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-rfkill.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-rfkill.socket license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-suspend-then-hibernate.service.in unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-suspend.service.in units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
systemd-sysctl.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-sysext.service sysext: rework command line interface to be verb-based 2021-01-20 17:50:23 +01:00
systemd-sysusers.service Revert "sysusers/firstboot: temporarily disable LoadCredential" 2021-05-03 12:16:35 +09:00
systemd-time-wait-sync.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-timedated.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-timesyncd.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-tmpfiles-clean.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-tmpfiles-clean.timer units: skip some units in the initrd 2021-05-22 15:58:40 +09:00
systemd-tmpfiles-setup-dev.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-tmpfiles-setup.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-udev-settle.service license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
systemd-udev-trigger.service unit: ignore exit code of "udevadm trigger" 2021-02-21 04:40:23 +09:00
systemd-udevd-control.socket unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-udevd-kernel.socket unit: use alias name of man page 2021-06-15 12:14:26 +01:00
systemd-udevd.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-update-done.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-update-utmp-runlevel.service.in units: adjust description of systemd-update-utmp.service 2021-06-30 13:25:16 +02:00
systemd-update-utmp.service.in units: adjust description of systemd-update-utmp.service 2021-06-30 13:25:16 +02:00
systemd-user-sessions.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-userdbd.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-userdbd.socket userdbd: also listen on a varlink socket io.systemd.DropIn 2021-05-10 14:58:39 +02:00
systemd-vconsole-setup.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
systemd-volatile-root.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
time-set.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
time-sync.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
timers.target units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
tmp.mount units: adjust Descriptions of various units 2021-06-30 13:25:16 +02:00
umount.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
usb-gadget.target license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
user-runtime-dir@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
user.slice license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
user@.service.in meson: use jinja2 for unit templates 2021-05-19 10:24:43 +09:00
var-lib-machines.mount license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
veritysetup-pre.target veritysetup-generator: add support for veritytab 2021-01-15 11:06:11 -05:00
veritysetup.target veritysetup-generator: add support for veritytab 2021-01-15 11:06:11 -05:00