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- Improve wording for explanation when these variables are inherited
- Clarify that these variables are not placed in the process environment block,
so /proc/PID/environ cannot be used as a debugging tool
(cherry picked from commit 6c1e0823b0)
This fixes
commit 9b0688f491
Author: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue Jan 9 10:52:49 2024 +0900
virt: add Google Compute Engine support
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit 9ffdfc67c6)
The page was written when systemd-repart was primarily intended to be used on a
running system. But nowadays it's more often used to create images, so extend
that part of the description.
While at it, fix some whitespace issues and trim some overly complicated sentences.
(cherry picked from commit d202ea5754)
Certainly on systemd 252 at least a configuration of
```
MemorySwapMax=40%
```
is supported but this was missing from the man page.
Only MemoryMax was documented as supporting a %.
(cherry picked from commit 8af38e5b04)
Make the warning for oneshot services (where RuntimeMaxSec= has no
effect) more actionable by pointing to the directive people can use
instead to effectively limit their runtime.
(cherry picked from commit 8c4aa0f1c6)
The XDG base dir spec adopted ~/.local/state/ as a thing a while back,
and we updated our docs in b4d6bc63e6, but
forgot to to update the table at the bottom to fully reflect the update.
Fix that.
(cherry picked from commit 72a6296b16)
This file doesn't document features of systemd, but is more a of a
general description that generalizes/modernizes FHS. As such, the items
listed in it weren't "added" in systemd versions, they simply reflect
general concepts independent of any specific systemd version. hence
let's drop this misleading and confusing version info.
Or in other words, the man page currently claims under "/usr/": "Added
in version 215." – Which of course is rubbish, the directory existed
since time began.
This also rebreaks all paragaphs this touches.
No content changes.
(cherry picked from commit 26db8fe247)
Update the man page of tmpfiles.d to remove outdated comments regarding the behavior of ownership with symlinks.
The behavior has been changed in this commit 51207ca134
(cherry picked from commit d108198f39)
Historically, systemd-tmpfiles was designed to manager temporary
files, but nowadays it has become a generic tool for managing
all kinds of files. To avoid user confusion, let's remove "temporary"
from the tool's description.
As discussed in #33349
(cherry picked from commit b5c8cc0a3b)
Mention that by default, /home is managed by tmpfiles.d/home.conf, and
recommend that users run systemd-tmpfiles --dry-run --purge first to
see exactly what will be removed.
(cherry picked from commit 9ebcac3b51)
Section "Description" didn't actually say what systemd does. And we had a giant
"Concepts" section that actually described units types and other details about
them. So let's move the basic description of functionality to "Description" and
rename the following section to "Units".
The link to the Original Design Document is moved to "See Also", it is of
historical interest mostly at this point.
The only actual change is that when talking about API filesystems, /dev is also
mentioned. (I think /sys+/proc+/dev are the canonical set and should be always
listed on one breath.)
(cherry picked from commit f11aaf7dfb)
Since we document /usr/local/lib/systemd/ and other paths for various things,
add notes that this is not supported if /usr/local is a separate partition. In
systemd.unit, I tried to add the footnote in the table where
/usr/local/lib/systemd/ is listed, but that get's rendered as '[sup]a[/sup]'
with a mangled footnote at the bottom of the table :( .
Also, split paragraphs in one place where the subject changes without any
transition.
Follow-up for 02f35b1c90.
Replaces https://github.com/systemd/systemd/pull/33231.
It has been mentioned in IPv4Forwarding= and IPv6Forwarding=,
but let's also explain in the settings who imply these settings.
Follow-up for 3976c43092 and
485f5148b3.
For run0 (as opposed to systemd-run in general), connecting to
the system bus (of localhost or container) as a different user
than root and then trying to elevate privilege from that
makes little sense:
https://github.com/systemd/systemd/issues/32997#issuecomment-2127992973
The @ syntax is mostly useful when connecting to the user bus,
which is not a use case for run0. Hence, let's remove the example.
The syntax will be properly refused in #32999.
- mention that /run/machine-id is used if exist.
- mention system.machine_id credential,
- credential, VM uuid, and container uuid are not read when --root=
is specified or running in a chroot environment.
Fixes https://github.com/systemd/systemd/issues/28514.
Quoting https://github.com/systemd/systemd/issues/28514#issuecomment-1831781486:
> Whenever PAM is enabled for a service, we set up the PAM session and then
> fork off a process whose only job is to eventually close the PAM session when
> the service dies. That services we run with service privileges, both to
> minimize attack surface and because we want to use PR_SET_DEATHSIG to be get
> a notification via signal whenever the main process dies. But that only works
> if we have the same credentials as that main process.
>
> Now, if pam_systemd runs inside the PAM stack (which it normally does) it's
> session close hook will ask logind to synchronously end the session via a bus
> call. Currently that call is not accessible to unprivileged clients. And
> that's the part we need to relax: allow users to end their own sessions.
The check is implemented in a way that allows the kill if the sender is in
the target session.
I found 'sudo systemctl --user -M "zbyszek@" is-system-running' to
be a convenient reproducer.
Before:
May 16 16:25:26 x1c systemd[1]: run-u24754.service: Deactivated successfully.
May 16 16:25:26 x1c dbus-broker[1489]: A security policy denied :1.24757 to send method call /org/freedesktop/login1:org.freedesktop.login1.Manager.ReleaseSession to org.freedesktop.login1.
May 16 16:25:26 x1c (sd-pam)[3036470]: pam_systemd(login:session): Failed to release session: Access denied
May 16 16:25:26 x1c systemd[1]: Stopping session-114.scope...
May 16 16:25:26 x1c systemd[1]: session-114.scope: Deactivated successfully.
May 16 16:25:26 x1c systemd[1]: Stopped session-114.scope.
May 16 16:25:26 x1c systemd[1]: session-c151.scope: Deactivated successfully.
May 16 16:25:26 x1c systemd-logind[1513]: Session c151 logged out. Waiting for processes to exit.
May 16 16:25:26 x1c systemd-logind[1513]: Removed session c151.
After:
May 16 17:02:15 x1c systemd[1]: run-u24770.service: Deactivated successfully.
May 16 17:02:15 x1c systemd[1]: Stopping session-115.scope...
May 16 17:02:15 x1c systemd[1]: session-c153.scope: Deactivated successfully.
May 16 17:02:15 x1c systemd[1]: session-115.scope: Deactivated successfully.
May 16 17:02:15 x1c systemd[1]: Stopped session-115.scope.
May 16 17:02:15 x1c systemd-logind[1513]: Session c153 logged out. Waiting for processes to exit.
May 16 17:02:15 x1c systemd-logind[1513]: Removed session c153.
Edit: this seems to also fix https://github.com/systemd/systemd/issues/8598.
It seems that with the call to ReleaseSession, we wait for the pam session
close hooks to finish. I inserted a 'sleep(10)' after the call to ReleaseSession
in pam_systemd, and things block on that, nothing is killed prematurely.
Prompted by #32895
Rather than ordering with each power operation targets,
ordering against shutdown.target which is a valid
synchronization point. This has no effect if soft-reboot
is being performed.
A fixed name is too rigid, let's give users the ability to define
custom drop-in names which at the same time also allows defining
multiple dropins per unit.
We use ~ as the separator because:
- ':' is not allowed in credential names
- '=' is used to separate credential from value in mkosi's --credential
argument.
- '-' is commonly used in filenames
- '@' already has meaning as the unit template specifier which might be
confusing when adding dropins for template units
Like much English text, the systemd documentation uses "may not" in the
sense of both "will possibly not" and "is forbidden to". In many cases
this is OK because the context makes it clear, but in others I felt it
was possible to read the "is forbidden to" sense by mistake: in
particular, I tripped over "the target file may not exist" in
systemd.unit(5) before realizing the correct interpretation.
Use "might not" or "may choose not to" in these cases to make it clear
which sense we mean.
This commit adds the new varlink interface io.systemd.Machine at
/run/systemd/machine/io.systemd.Machine with a single method Register
It supports all combinations of RegisterMachine[WithSSH,WithNetwork] all
under the same method.
Also adds three properties:
- VsockCid: the VSOCK CID of the VM
- SshAddress: the address of the VM in a format SSH can connect to
- SshPrivateKeyPath: the path to the SSH private key to use to connect
to the VM.
GetMachineSSHInfo is essentially a convenience method to query both the
SshAddress and SshPrivateKeyPath properties at once.
In the majority of cases, this is caused by
sleep_supported() returning error. Hence it's
very likely that it would fail again, so
the fallback is not really useful. Instead,
honor the --force option for these verbs.
The systemd-confext use case description was mentioning an OSConfig
project which won't say much to users. Also, it's good to call out that
systemd-confext provides a reliable way to manage configuration because
in contrast to other tools it will remove all old configuration files.
According to the documentation in systemd.resource-control(5),
resource-control options may be used in mount, scope, service,
slice, socket and swap units.
While e.g. systemd.service(5) includes that information,
documentation for some other units does not.
The most problematic example is systemd.slice(5).
Its documentation states a slice unit may only contain [Install]
and [Unit] sections, while actually it may contain also a [Slice]
section with options from systemd.resource-control(5).
units/user/app.slice is an example of a slice unit having a [Slice]
section.
TEST-26-SYSTEMCTL is racy as we call systemctl is-active immediately
after systemctl kill. Let's implement --wait for systemctl kill and
use it in TEST-26-SYSTEMCTL to avoid the race.
In mkosi CI, we want persistent journals when running interactively
and runtime journals when running in CI, so let's add a credential
that allows us to configure which one to use.
Required for integration tests to power off on PID 1 crashes. We
deprecate systemd.crash_reboot and related options by removing them
from the documentation but still parsing them.
LinkLocalAddressing accepts a boolean. This can be seen by looking at
`link_local_address_family_from_strong(cont char *s)` in
`src/network/netword-util.c#L102-108` which falls back to
`address_family_from_string`, defined two lines above (L100)
using `DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN`.
Also: rename Handover → Handoff. I think it makes it clearer that this
is not really about handing over any resources, but that the executor is
out off the game from that point on.
With 1df4b21abd we started to default to
enrolling into the LUKS device backing the root fs if none was specified
(and no wipe operation is used). This changes to look for /var/ instead.
On most systems /var/ is going to be on the root fs, hence this change
is with little effect.
However, on systems where / and /var/ is separate it makes more sense to
default to /var/ because that's where the persistent and variable data
is placed (i.e. where LUKS should be used) while / doesn't really have
to be variable, could as well be immutable, or ephemeral. Hence /var/
should be a safer default.
Or to say this differently: I think it makes sense to support systems
with /var/ being on / well. I also think it makes sense to support
systems with them being separate, and /var/ being variable and
persistent. But any other kind of system I find much less interesting to
support, and in that case people should just specify the device name.
Also, while we are at it, tighten the checks a bit, insist on a dm-crypt
+ LUKS superblock before continuing.
And finally, let's print a short message indicating the device we
operate on.
The log files defined using file:, append: or truncate: inherit the owner and other privileges from the effective user running systemd.
The log files are NOT created using the "User", "Group" or "UMask" defined in the service.
