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We want to make use of that when formatting file systems, hence let's
pull in these modules explicitly.
(This is necessary because we are an early boot service that might run
before systemd-tmpfiles-dev.service, which creates /dev/loop-control and
/dev/mapper/control.)
Alternatively we could just order ourselves after
systemd-tmpfiles-dev.service, but I think there's value in adding an
explicit minimal ordering here, since we know what we'll need.
Fixes: #25775
(cherry picked from commit ce7dcfd6b0)
(cherry picked from commit 3856b97f8b)
Follow-up for da15f8406e which did the
change for systemd-networkd-wait-online.service, let's also do this for
systemd-networkd-wait-online@.service
(cherry picked from commit 51f3dc2234)
(cherry picked from commit c7bf13b2d9)
We don't want systemd-networkd-wait-online to start if systemd-networkd
is skipped due to condition failures. This is only guaranteed by BindsTo=
and not Requires=, so let's use BindsTo=
(cherry picked from commit da15f8406e)
(cherry picked from commit 01a39e96b5)
Normally we queue initrd-switch-root.target/isolate, which pulls in the
service via Wants= in the .target unit file. But if the service is instead
started directly, there may be nothing pulling in the target. Let's make
sure that the reference exists.
(cherry picked from commit 5b5ec138c6)
If we want to stop those services which would compete for access to
the console, we need to have an ordering so that they are actually
stopped before the other things starts, not asynchronously.
(cherry picked from commit 3449814b8b)
For shutdown, we queue shutdown.target/start, so in every unit which should be
stopped *before* shutdown, we need both Conflicts and an ordering dependency
with shutdown.target (either Before= or After= would work, because stop jobs
are always ordered before start jobs).
For initrd transition, we queue initrd-switch-root.service/isolate. This
automatically creates a /stop job for every running unit without
IgnoreOnIsolate. But no ordering dependency is created, unless the unit has a
(possibly transitive) ordering dependency on initrd-switch-root.service.
Since most units must stop before the transition, we should add the ordering
dependency. It is nicer to use Before=initrd-switch-root.target for this.
initrd-switch-root.target is ordered before initrd-switch-root.service, so
the effect it the same when both are in a transaction.
Fixes#23745.
To also cover the case where somebody is emergency mode in the initrd and
queues initrd-switch-root.service/start (not isolate), also add
Conflicts=initrd-switch-root.target, so various units are stopped properly.
This extends 2525682565 to cover all the other
services that are touched. It could be consider "operator error", but it's
easy to make and it's nicer if we can make this more foolproof.
(cherry picked from commit 7c0e2b5559)
The block is reordered and split to have:
1. description + documentation
2. (optionally) conditions
3. all the dependencies
I think it's easier to read the units this way.
Also, the Conflicts+Before is seperated out to separate lines.
The ordering dependency is "fake", because it could just as well be
After=, we are adding it to force ordering wrt. shutdown.target, and
it plays a different role than the other Before=, which are about a
real ordering on boot.
(cherry picked from commit 9810e41942)
This partially reverts cabc1c6d7a.
The setting ProtectClock= implies DeviceAllow=, which is not suitable
for udevd. Although we are slowly removing cgropsv1 support, but
DeviceAllow= with cgroupsv1 is necessarily racy, and reloading PID1
during the early boot process may cause issues like #24668.
Let's disable ProtectClock= for udevd. And, if necessary, let's
explicitly drop CAP_SYS_TIME and CAP_WAKE_ALARM (and possibly others)
by using CapabilityBoundingSet= later.
Fixes#24668.
(cherry picked from commit f562abe296)
They are various cases where the same module might be repeatedly
loaded in a short time frame, for example if a service depending on a
module keep restarting, or if many instances of such service get
started at the same time. If this happend the modprobe@.service
instance will be marked as failed because it hit the restart limit.
Overall it doesn't seems to make much sense to have a restart limit on
the modprobe service so just disable it.
Fixes: #23742
(cherry picked from commit 9625350e53)
GIT_VERSION is not available as a config.h variable, because it's rendered
into version.h during builds. Let's rework jinja2 rendering to also
parse version.h. No functional change, the new variable is so far unused.
I guess this will make partial rebuilds a bit slower, but it's useful
to be able to use the full version string.
These unit (if enabled) will try to update the OS in regular intervals.
Moreover, every day in the early morning this will attempt to reboot the
system if there's a newer version installed than running.
And enable cgroup delegation for udevd.
Then, processes invoked through ExecReload= are assigned .control
subcgroup, and they are not killed by cg_kill().
Fixes#16867 and #22686.
The current description for the factory reset target does not add any
value and doesn't respect the definition of the related property as
described in systemd.unit(5).
Starting the target currently results in the following log:
[ 11.139174] systemd[1]: Reached target Target that triggers factory reset. Does nothing by default..
[ OK ] Reached target Target that…set. Does nothing by default..
Simply update the target description to "Factory Reset".
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
79a67f3ca4 pulled systemd-resolved.service
in from basic.target instead of multi-user.target, i.e. the idea is to
make it an early boot service, instead of a regular service.
However, early boot services are supposed to be in sysinit.target, not
basic.target (the latter is just one that combines the early boot
services in sysinit.target, the sockets in sockets.targt, the mounts in
local-fs.target and so on into one big target).
Also, the comit actually didn't add a synchronization point, i.e. not
Before=, so that the whole thing was racy.
Let's fix all that.
Follow-up for 79a67f3ca4
This ordering existed since resolved was first created, but there should
not be any need to order the two services against each other, as
resolved should be able to pick up networkd DNS metadata either way (as
it works with inotify in /run).
Let's drop this hence, and not cargo-cult this to eternity
Also see: https://github.com/systemd/systemd/pull/22389#issuecomment-1045978403
This is a follow-up for d5ee050ffc, and
reintroduces a requirement dep from systemd-journal-flush.service onto
systemd-journald.service, but a weaker one than originally: a Wants= one
instead of a Requires= one.
Why? Simply because the service issues an IPC call to the journald,
hence it should pull it in. (Note that socket activation doesn't happen
for the Varlink socket it uses, hence we should pull in the service
itself.)
The systemd-oomd.service unit contains
[Install]
WantedBy=multi-user.target
Alias=dbus-org.freedesktop.oom1.service
which means the symlink is supposed to be created dynamically when the
service is enabled.
In the olden days systemd-resolved used dbus and it didn't make sense to start
it before dbus which is started fairly late. But we have mostly ported resolved
over to varlink. The queries from nss-resolve are done using varlink, so name
resolution can work without dbus. resolvectl still uses dbus, so e.g. 'resolvectl
query' will not work, but by starting systemd-resolved earlier we're not making this
any worse.
If systemd-resolved is started after dbus, it registers the name and everything
is fine. If it is started before dbus, it'll watch for the dbus socket and
connect later. So it should be fine to start systemd-resolved earlier. (If dbus
is stopped and restarted, unfortunately systemd-resolved does not reconnect.
This seems to be a small bug: since our daemons know how to watch for
dbus.socket, they could restart the watch if they ever lose the connection. But
this scenario shouldn't happen in normal boot, and restarting dbus is not
supported anyway.)
Moving the start earlier the following advantages:
- name resolution becomes availabe earlier, in particular for synthesized
hostnames even before the network is up.
- basic.target is part of initrd.target, so systemd-resolved will get started
in the initrd if installed. This is required for nfs-root when the server is
specified using a name (https://bugzilla.redhat.com/show_bug.cgi?id=2037311).
Otherwise, systemd-homed-active.service will fail to deactivate all
homes because homectl can no longer talk to homed if dbus stops first.
As a result, /home cannot be umounted.
Doing this on systemd-homed-active.service instead works as well, but
systemd-homed will exit 1 if dbus is already shut down.
It is used by udevd and networkd. Since udevd is enabled statically, let's also
change the preset to "on". networkd is opt-in, so let's pull in the generator
when enabling networkd too.
Fixes#21626. (The bug report talks about /run, but the issue is actually with
/tmp.) People use /tmp for various things that fit in memory, e.g. unpacking
packages, and 400k is not much. Let's raise is a bit.
Programs run by udev triggers may need to execute the bpf() syscall. Even more
so, since on a cgroup v2 system, the only way to set up device access filtering
is to install a BPF program on the cgroup in question and one way of passing
data to such program is through BPF maps, which can only be access using the
bpf() syscall. One such use case was identified in RHBZ#2025264 related to
snap-device-helper, and led to RHBZ#2027627 being filed.
Unfortunately there is no finer grained control over what gets passed in the
syscall, so just enable bpf() and leave fine grained mediation to other
security layers (eg. SELinux).
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2027627
Signed-off-by: Maciek Borzecki <maciek.borzecki@gmail.com>
Due to the fact that systemd-journal-flush.service has
"Requires=systemd-journald.service", this service is stopped too when journald
is requested to do so.
However stopping systemd-journal-flush.service implies that journald
relinquishes /var hence implicitly switching back to the volatile storage
mode and removing /run/systemd/journal/flushed.
If journald is started afterwards, it will run in volatile storage mode
regardless of the value of 'Storage=' as it believes now that /var is not yet
ready (because the flushed flag is missing).
Because this flag is mainly an indication for journald that the initialization
of /var/log/journal (during the boot process) has been done,
systemd-journal-flush.service shouldn't be tied to the state of journald itself
but to the state of /var/log/journal, hence to the state of the system.
Parsing objects is risky as data could be malformed or malicious,
so avoid doing that from the main systemd-coredump process and
instead fork another process, and set it to avoid generating
core files itself.
Users may use rules that refer to binaries e.g. in /opt or /usr/local,
and those directories may be separate mount points. We don't need the
binfmt rules in early boot, so let's delay the service so that we can
rely on the full local filesystem being visible.
Fixes#21178.
When using "capture : true" in custom_target()s the mode of the source
file is not preserved when the generated file is not installed and so
needs to be tweaked manually. Switch from output capture to creating the
target file and copy the permissions from the input file.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
If the tty arg is set to "-", agetty uses the stdin fd as the tty.
Let's pass the tty this way so that we keep an fd open to the tty
at all times. If all fd's to a tty are closed, the kernel might
reset the tty which we want to avoid.
This adds support for dm integrity targets and an associated
/etc/integritytab file which is required as the dm integrity device
super block doesn't include all of the required metadata to bring up
the device correctly. See integritytab man page for details.
Let's make it slightly more likely that a per-user service manager is
killed than any system service. We use a conservative 100 (from a range
that goes all the way to 1000).
Replaces: #17426
Together with the previous commit this means: system manager and system
services are placed at OOM score adjustment 0 (specifically: they
inherit kernel default of 0). User service manager (both for root and
non-root) are placed at 100. User services for non-root are placed at
200, those for root inherit 100.
Note that processes forked off the user *sessions* (i.e. not forked off
the per-user service manager) remain at 0 (e.g. the shell process
created by a tty or ssh login). This probably should be
addressed too one day (maybe in pam_systemd?), but is not covered here.
