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This commit improves systemd performance on the systems which have
thousands of units.
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Make this an output flag instead, so that our function prototypes can lose one
parameter
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This adds a new GetProcesses() bus call to the Unit object which returns an
array consisting of all PIDs, their process names, as well as their full cgroup
paths. This is then used by "systemctl status" to show the per-unit process
tree.
This has the benefit that the client-side no longer needs to access the
cgroupfs directly to show the process tree of a unit. Instead, it now uses this
new API, which means it also works if -H or -M are used correctly, as the
information from the specific host is used, and not the one from the local
system.
Fixes: #2945
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When "preset" was executed for a unit without install info, we'd warn similarly
as for "enable" and "disable". But "preset" is usually called for all units,
because the preset files are provided by the distribution, and the units are under
control of individual programs, and it's reasonable to call "preset" for all units
rather then try to do it only for the ones that can be installed.
We also don't warn about missing info for "preset-all". Thus it seems reasonable
to silently ignore units w/o install info when presetting.
(In addition, when more than one unit was specified, we'd issue the warning
only if none of them had install info. But this is probably something to fix
for enable/disable too.)
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No need to dump all the redundant device units on the user, just because he
specified that he wants to see units of a specific state.
This was broken by commit ebc962656cee33e3e8395f456a8208c3ca41969c.
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The advice string didn't talk about template units at all. Extend
it and print when trying to enable a template unit without install info.
Fixes #2345.
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Fixes #2191:
$ systemctl --root=/ enable sddm
Created symlink /etc/systemd/system/display-manager.service, pointing to /usr/lib/systemd/system/sddm.service.
$ sudo build/systemctl --root=/ enable gdm
Failed to enable unit, file /etc/systemd/system/display-manager.service already exists and is a symlink to /usr/lib/systemd/system/sddm.service.
$ sudo build/systemctl --root= enable sddm
$ sudo build/systemctl --root= enable gdm
Failed to enable unit: File /etc/systemd/system/display-manager.service already exists and is a symlink to /usr/lib/systemd/system/sddm.service.
(I tried a few different approaches to pass the error information back to the
caller. Adding a new parameter to hold the error results in a gigantic patch
and a lot of hassle to pass the args arounds. Adding this information to the
changes array is straightforward and can be more easily extended in the
future.)
In case local installation is performed, the full set of errors can be reported
and we do that. When running over dbus, only the first error is reported.
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With any masked unit that would that would be enabled by presets, we'd get:
test@rawhide $ sudo systemctl preset-all
Failed to execute operation: Unit file is masked.
test@rawhide $ sudo systemctl --root=/ preset-all
Operation failed: Cannot send after transport endpoint shutdown
Simply ignore those units:
test@rawhide $ sudo systemctl preset-all
Unit xxx.service is masked, ignoring.
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If the error code ever leaks (we print the strerror error instead of providing
our own), the message for ESHUTDOWN is "Cannot send after transport endpoint
shutdown", which can be misleading. In particular it suggest that some
mishandling of the dbus connection occured. Let's change that to ERFKILL which
has the advantage that a) it sounds implausible as actual error, b) has the
connotation of disabling something manually.
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Before 0f03c2a4c093 specifying any path would cause the systemctl client
to do the installation itself, instead of going over dbus. Restore that
behaviour.
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CID #1354670.
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The coccinelle patch didn't work in some places, I have no idea why.
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choke on ELOOP
ELOOP indicates that there's a symlink in /etc for a native unit file, and
that's completely OK.
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be enabled
We don't allow using config symlinks to enable units, but the error message we
printed was awful. Fix that, and generate a more readable error.
Fixes #3010.
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This allows dropping all user configuration and reverting back to the vendor
default of a unit file. It basically undoes what "systemctl edit", "systemctl
set-property" and "systemctl mask" do.
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The SysV compat code checks whether there's a native unit file before looking
for a SysV init script. Since the newest rework generated units will show up in
the unit path, and hence the checks ended up assuming that there always was a
native unit file for each init script: the generated one.
With this change the generated unit file directory is suppressed from the
search path when this check is done, to avoid the confusion.
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We should log about everything we don't expect.
Also, add a comment for one case were we do not log, on purpose, and make it
use a separate error code.
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Move the search path check from the SysV service compat support into install.c
so that we can reuse the usual algorithm instead of rolling a private loop for
this.
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Always warn if something fails, and clarify that the involved utility functions
do so in their name.
Drop the REBOOT_PARAM_FILE macro. We don't do this for other flag file paths
like this, so don't do this for this one either. The path isn't configurable
anyway, hence let's make this easier to read by avoiding this one indirection.
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Now, that the search path logic knows the unit path for transient units we also
can introduce an explicit unit file state "transient" that clarifies to the
user what kind of unit file he is encountering.
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Previously, we had two enums ManagerRunningAs and UnitFileScope, that were
mostly identical and converted from one to the other all the time. The latter
had one more value UNIT_FILE_GLOBAL however.
Let's simplify things, and remove ManagerRunningAs and replace it by
UnitFileScope everywhere, thus making the translation unnecessary. Introduce
two new macros MANAGER_IS_SYSTEM() and MANAGER_IS_USER() to simplify checking
if we are running in one or the user context.
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directory fields
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Let's be precise when the user tries to invoke an "enable" operation on a
generated unit file.
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Now that we store the generator directories in LookupPaths we can use this to
intrdouce a new unit file state called "generated", for units in these
directories.
Fixes: #2348
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A long time ago – when generators where first introduced – the directories for
them were randomly created via mkdtemp(). This was changed later so that they
use fixed name directories now. Let's make use of this, and add the genrator
dirs to the LookupPaths structure and into the unit file search path maintained
in it. This has the benefit that the generator dirs are now normal part of the
search path for all tools, and thus are shown in "systemctl list-unit-files"
too.
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Add `--value` option to systemctl and loginctl to only print values
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With this option, systemctl will only print the rhs in show:
$ systemctl show -p Wants,After systemd-journald --value
systemd-journald.socket ...
systemd-journald-dev-log.socket ...
This is useful in scripts, because the need to call awk or similar
is removed.
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%u is a simple uint which might not be 32 bit on every platform. Use PRIu32
instead.
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list-units
If list-units command is explicitly asked to show inactive units
by using '--state=inactive' option, there's no need to force the user
to pass '--all' option to include inactive units in the search in
this case.
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systemctl: Replace check_one_unit() by get_state_one_unit()
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Fixes #2798
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Fixes #2734
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If HAVE_SYSV_COMPAT is not defined: ‘action_to_runlevel’ defined but not used
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The get_state_one_unit returns the enum of the active state of the unit
Do not rely on the string value of the active state.
Fix #2718 since the refactoring allow to handle more case
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tree-wide: merge pager_open_if_enabled() to the pager_open()
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Many subsystems define own pager_open_if_enabled() function which
checks '--no-pager' command line argument and open pager depends
on its value. All implementations of pager_open_if_enabled() are
the same. Let's merger this function with pager_open() from the
shared/pager.c and remove pager_open_if_enabled() from all subsytems
to prevent code duplication.
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Throughout the tree there's spurious use of spaces separating ++ and --
operators from their respective operands. Make ++ and -- operator
consistent with the majority of existing uses; discard the spaces.
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Followup for 4524439edb7d.
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https://github.com/systemd/systemd/issues/2431
Some newlines are added, but the output will still exceed 80 columns in many
cases. The fallback for oom conditions is changed from "n/a" to something
"<service>", and a similar pattern is used for the new code. This way we
have a realistic fallback for oom, which seems nicer than making the whole
function return an error code which would then have to be propagated.
$ systemctl -M fedora-rawhide restart systemd-networkd.service
Job for systemd-networkd.service failed because start of the service was attempted too often.
See "systemctl -M fedora-rawhide status systemd-networkd.service" and "journalctl -M fedora-rawhide -xe" for details.
To force a start use "systemctl -M fedora-rawhide reset-failed systemd-networkd.service"
followed by "systemctl -M fedora-rawhide start systemd-networkd.service" again.
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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Make sure we can properly process resource limit properties. Specifically, allow transient configuration of both the
soft and hard limit, the same way from the unit files. Previously, only the the hard rlimits could be configured but
they'd implicitly spill into the soft hard rlimits.
This also updates the client-side code to be able to parse hard/soft resource limit specifications. Since we need to
serialize two properties in bus_append_unit_property_assignment() now, the marshalling of the container around it is
now moved into the function itself. This has the benefit of shortening the calling code.
As a side effect this now beefs up the rlimit parser of "systemctl set-property" to understand time and disk sizes
where that's appropriate.
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The verb entry got lost in the ultimate commit.
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Fixes #2015
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But also keep the old name as (undocumented) compatibility around.
The reload-or-try-restart was documented to be a NOP if the unit is not running, since the previous commits this is
also implemented. The old name suggests that the "try" logic only applies to restarting. Fix this, by moving the "try-"
to the front, to indicate that the whole option is a NOP if the service isn't running.
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