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SuccessAction= is similar to FailureAction= but declares what to do on
success of a unit, rather than on failure. This is useful for running
commands in qemu/nspawn images, that shall power down on completion. We
frequently see "ExecStopPost=/usr/bin/systemctl poweroff" or so in unit
files like this. Offer a simple, more declarative alternative for this.
While we are at it, hook up failure action with unit_dump() and
transient units too.
This little new command can parse, validate, normalize calendar events,
and calculate when they will elapse next. This should be useful for
anyone writing calendar events and who'd like to validate the expression
before running them as timer units.
So far I avoided adding license headers to meson files, but they are pretty
big and important and should carry license headers like everything else.
I added my own copyright, even though other people modified those files too.
But this is mostly symbolic, so I hope that's OK.
We already made a similar change when talking about the "restart"
command, let's also do this for "systemctl reload" and friends.
Follow-up for: 6539dd7c42946d9ba5dc43028b8b5785eb2db3c5
See: #7126
Before this, assigning empty string to Delegate= makes no change to the
controller list. This is inconsistent to the other options that take list
of strings. After this, when empty string is assigned to Delegate=, the
list of controllers is reset. Such behavior is consistent to other options
and useful for drop-in configs.
Closes#7334.
This option is likely to be very useful for systemd-run invocations,
hence let's add a shortcut for it.
With this new concepts it's now very easy to put together systemd-run
invocations that leave zero artifacts in the system, including when they
fail.
Right now, the option only takes one of two possible values "inactive"
or "inactive-or-failed", the former being the default, and exposing same
behaviour as the status quo ante. If set to "inactive-or-failed" units
may be collected by the GC logic when in the "failed" state too.
This logic should be a nicer alternative to using the "-" modifier for
ExecStart= and friends, as the exit data is collected and logged about
and only removed when the GC comes along. This should be useful in
particular for per-connection socket-activated services, as well as
"systemd-run" command lines that shall leave no artifacts in the
system.
I was thinking about whether to expose this as a boolean, but opted for
an enum instead, as I have the suspicion other tweaks like this might be
a added later on, in which case we extend this setting instead of having
to add yet another one.
Also, let's add some documentation for the GC logic.
Let's clarify that these settings only apply to stdout/stderr logging.
Always mention the journal before syslog (as the latter is in most ways
just a legacy alias these days). Always mention the +console cases too.
This addition is kept brief on purpose, since in order to write a good
generator users don't really need to grok templating/instantiation.
Fixes: #7257
This was probably a typo, since depending proxy-to-nginx.service on
itself makes no sense, but depending on the socket does.
Signed-off-by: Roland Hieber <r.hieber@pengutronix.de>
SetLinger is authorized by the PolicyKit action "set-self-linger", if it is
not passed an explicit UID.
According to comments we were determining the default UID from the client's
session. However, user processes e.g. which are run from a terminal
emulator do not necessarily belong to a session scope unit. They may
equally be started from the systemd user manager [1][2]. Actually the
comment was wrong, and it would also have worked for processes
started from the systemd user manager.
Nevertheless it seems to involve fetching "augmented credentials" i.e.
it's using a racy method, so we shouldn't have been authenticating based
on it.
We could change the default UID, but that raises issues especially for
consistency between the methods. Instead we can just use the clients
effective UID for authorization.
This commit also fixes `loginctl enable-linger $USER` to match the docs
that say it was equivalent to `loginctl enable-linger` (given that $USER
matches the callers user and owner_uid). Previously, the former would not
have suceeded for unpriviliged users in the default configuration.
[1] It seems the main meaning of per-session scopes is tracking the PAM
login process. Killing that provokes logind to revoke device access. Less
circularly, killing it provokes getty to hangup the TTY.
[2] User units may be started with an environment which includes
XDG_SESSION_ID (presuambly GNOME does this?). Or not.
It's not systemd that invokes the service internally as needed, it's
systemd-localed. Correct that.
Also, stop using the word "helper". To me a "helper" constitutes
something internal, not official API. I doubt systemd-vconsole-setup
really matches that description though, hence let's better avoid the
term.
Also, clean up some other wording, and be less imbiguous, by suggesting
a single command to apply vconsole.conf instead of two.
Follow-up for 597c25d2a7c61453acd723340350e8748a5106dd
