units: replace symlinks in units/user/ by real files
We already *install* those as real files since de78fa9ba0be55b01066ca5a716c6673d76b817b.
Meson will start to copy symlinks as-is, so we would get dangling symlinks in
/usr/lib/systemd/user/.
I considered the layout in our sources to match the layout in the installation
filesystem (i.e. creating units/system/ and moving all files from units/ to
units/system/), but that seems overkill. By using normal files for both we get
some duplication, but those files change rarely, so it's not a big downside in
practice.
Franck Bui [Wed, 12 Dec 2018 12:46:32 +0000 (13:46 +0100)]
vconsole-setup: fonts copy will fail if the current terminal is in graphical mode
If the terminal is in graphical mode, the kernel will refuse to copy the fonts
and will return -EINVAL.
Also having the graphical mode in effect probably indicates that the terminal
is in used by another application and we shouldn't interfer in such cases.
It would work when the generator was run by systemd, since generators
are always started in "/", but when running the generator for debugging
purposes the result would be ... different.
generators: define custom main func definer and use it where applicable
There should be no functional difference, except that the error message
is changd from "three or no arguments" to "zero or three arguments". Somehow
the inverted form always seemed strange.
umask() call is also dropped from run-generator. I think it wasn't dropped in 053254e3cb215df3b8c905bc39b920f8817e1c7d because the run generator was merged
around the same time.
Sam Morris [Mon, 8 Oct 2018 11:03:28 +0000 (12:03 +0100)]
resolved: have the stub resolver listen on both TCP and UDP by default
RFC7766 section 4 states that in the absence of EDNS0, a response that
is too large for a 512-byte UDP packet will have the 'truncated' bit
set. The client is expected to retry the query over TCP.
Chris Down [Wed, 12 Dec 2018 10:49:35 +0000 (10:49 +0000)]
cgroup: Don't explicitly check for member in UNIT_BEFORE
The parent slice is always filtered ahead of time from UNIT_BEFORE, so
checking if the current member is the same as the parent unit will never
pass.
I may also write a SLICE_FOREACH_CHILD macro to remove some more of the
parent slice checks, but this requires a bit of a rework and general
refactoring and may not be worth it, so let's just do this for now.
core: when a unit state changes only propagate to jobs after reloading is complete
Previously, we'd immediately propagate unit state changes into any jobs
pending for them, always. With this we only do this if the manager is
out of the "reload" state. This fixes the problem #8803 tried to
address, by simply not completing jobs until after the reload (and thus
reestablishment of the dbus connection) is complete.
Note that there's no need to later on explicitly catch up with the
missed job state changes (i.e. there's no need to call
unit_process_job() later one explicitly). That's because for jobs in
JOB_WAITING state on deserialization all jobs are requeued into the run
queue anyway, and thus checked again if they can complete now. And for
JOB_RUNNING jobs unit_catchup() phase is going to trigger missed out
state changes *after* the reload complete anyway (after all that's what
distinguishes from unit_coldplug()).
Let's add a helper call unit_deserialize_job() for this purpose, and
let's move registration in the global jobs hash table into
job_install_deserialized() so that it it is done after all superficial
checks are done, and before transitioning into installed states, so that
rollback code is not necessary anymore.
job: be more careful when removing job object from jobs hash table
Let's validate that the ID is actually allocated to us before remove a
job.
This is relevant as various bits of code will call job_free() on
partially set up Job objects, and we really shouldn't remove another job
object accidentally from the hash table, when the set up didn't
complete.
Memory management is borked for this, and moreover this is unnecessary
since f0831ed2a03, i.e. since coldplug() and catchup() are two different
concepts: the former restoring the state from before a reload, the
latter than adjusting it again to the actual status in effect after the
reload.
meson: make net.naming-scheme= default configurable
This is useful for distributions, where the stability of interface names should
be preseved after an upgrade of systemd. So when some specific release of the
distro is made available, systemd defaults to the latest & greatest naming
scheme, and subsequent updates set the same default. This default may still
be overriden through the kernel and env var options.
A special value "latest" is also allowed. Without a specific name, it is harder
to verride from meson. In case of 'combo' options, meson reads the default
during the initial configuration, and "remembers" this choice. When systemd is
updated, old build/ directories could keep the old default, which would be
annoying. Hence, "latest" is introduced to make it explicit, yet follow the
upstream. This is actually useful for the user too, because it may be used
as an override, without having to actually specify a version.
With this we can stabilize how naming works for network interfaces. A
user can request through a kernel cmdline option or an env var which
scheme to follow. The idea is that installers use this to set into stone
(a very soft stone though) the scheme used during installation so that
interface naming doesn't change afterwards anymore.
Why use env vars and kernel cmdline options, and not a config file of
its own?
Well, first of all there's no obvious existing one to use. But more
importantly: I have the feeling that this logic is kind of an incomplete
hack, and I simply don't want to do advertise this as a perfectly
working solution. So far we used env vars for the non-so-official
options and proper config files for the official stuff. Given how
incomplete this logic is (i.e. the big variable for naming remains the
kernel, which might expose sysfs attributes in newer versions that we
check for and didn't exist in older versions — and other problems like
this), I am simply not confident in giving this first-class exposure in
a primary configuration file.
We would describe tmpfiles.d through what systemd-tmpfiles does with them, but
I think it's better to start with a geneneral statement what they are. Also,
let's make the description of volatile file systems less prominent.
Also, strenghten the advice to use RuntimeDirectory and mention
{Cache,Logs,Configuration,State}Directory=.
man: reword tmpfiles.d descriptions to refer less to previous descriptions
I think it is OK if some option is described as "similar to ..., but in
addition ...", as long as the "in addition" part is strictly additive this is
unambiguous. Otherwise, we'd have to repeat a lot of text, and then we'd
probably forget to adjust some of the descriptions when doing changes.
But when the "in addition" part is about replacing or removing parts of
functionality, it is better to avoid this pattern and describe the later option
from scratch.
Some paragraph breaks are added and minor changes made. UID/GID is changed to
user/group, since we generally expect user/group names to be used, not numeric
ids.
cg_ns_supported() caches, so the condition was really checked just once, but
it looks weird to assign the return value to arg_use_cgns (if the variable is not present),
because then the other checks are effectively equivalent to
if (cg_ns_supported() && cg_ns_supported()) { ...
and later
if (!cg_ns_supported() || !cg_ns_supported()) { ...
This imports the wiki page for predictable interface names. I think it's
useful to preserve history here because it's a contentious subject, and
it's useful to know when what happened.
projects / thirdparty / systemd.git / log
