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Currently we have 4 getty services. 1 has a BindsTo dependency on a
device unit. 3 have ConditionPathExists, but the reason is different in
every single one.
* Add comment to console-getty@.service (see commit 1b41981d)
* getty@.service is already commented
* container-getty.service is not strictly correct, as I realized while
trying to compose a comment. Reported as #6584.
* Containers don't use serial-getty@console.service,
they use console-getty.service instead, and suppress
scanning for kernel or virtualizer consoles.
* Nowadays gettys are started on *all* configured kernel consoles.
* except for the line printer console, because that's not a tty.
(Seriously. Search CONFIG_LP_CONSOLE).
This commit moves the first-boot system preset-settings evaluation out
of main and into the manager startup logic itself. Notably, it reverses
the order between generators and presets evaluation, so that any changes
performed by first-boot generators are taken into the account by presets
logic.
After this change, units created by a generator can be enabled as part
of a preset.
I hit a test failure with the `max_gid+1` test. Problem is that we loop
over 0..r, but set `r` again within the loop (to 1). So max_gid is only
set based on the first supplementary GID.
ConditionGroup=1000 → 1
ConditionGroup=4 → 1
ConditionGroup=adm → 1
ConditionGroup=1001 → 1
Assertion 'r == 0' failed at ../src/test/test-condition.c:462, function
test_condition_test_group(). Aborting.
$ id
uid=1000(alan-sysop) gid=1000(alan-sysop) groups=1000(alan-sysop),4(adm),
10(wheel),1001(sshlogin)
Without this requirement, if proxy-to-nginx.socket was down, and the sysadmin
were to do:
systemctl start proxy-to-nginx.service
then the service would come up without a configured socket, which doesn't make
sense. Normally this isn't how we expect a socket-activated service to start,
but it's possible for an admin to do this (if the .socket were already running,
the systemd-socket-proxyd process will start effectively idle). But the
.service shouldn't end up in a broken state if the .socket isn't already
listening.
Adding the explicit Requires: should ensure that an admin with this
configuration state can't accidentally break their system.
This reverts commit 4f5e972279.
Building with gperf 3.0 works just fine; we had an autoconf check to
determine the correct data types, and this check was ported to meson.
All test/TEST* but TEST-02-CRYPTSETUP share the same check_result_qemu()
and test_cleanup(), so move them into test_functions and only override
them in TEST-02-CRYPTSETUP.
Also provide a common test_run() which by default assumes that both QEMU
and nspawn tests are run. Particular tests which don't support either
need to explicitly opt out by setting $TEST_NO_{QEMU,NSPAWN}. Do it this
way around to avoid accidentally forgetting to opt in, and to encourage
test authors to at least always support nspawn.
* Revert "modprobe.d: ship drop-in to set bonding max_bonds to 0 (#6448)"
This reverts commit 582faeb461.
* Revert "units: set ConditionVirtualization=!private-users on journald audit socket (#6508)"
This reverts commit d2a1ba103b.
/sys is not guaranteed to exist when a new mount namespace is created.
It is only mounted under conditions specified by
`namespace_info_mount_apivfs`.
Checking if the three available MAC LSMs are enabled requires a sysfs
mounted at /sys, so the checks are moved to before a new mount ns is
created.
This changes the symbolic name for the default gateway from "gateway" to
"_gateway". A new configuration option -Dcompat-gateway-hostname=true|false
is added. If it is set, the old name is also supported, but the new name
is used as the canonical name in either case. This is intended as a temporary
measure to make the transition easier, and the option should be removed
after a few releases, at which point only the new name will be used.
The old "gateway" name mostly works OK, but hasn't gained widespread acceptance
because of the following (potential) conflicts:
- it is completely legal to have a host called "gateway"
- there is no guarantee that "gateway" will not be registered as a TLD, even
though this currently seems unlikely. (Even then, there would be no
conflict except for the case when the top-level domain itself was being resolved.
The "gateway" or "_gateway" labels have only special meaning when the
whole name consists of a single label, so resolution of any subdomain
of the hypothetical gateway. TLD would still work OK. )
Moving to "_gateway" avoids those issues because underscores are not allowed
in host names (RFC 1123, §2.1) and avoids potential conflicts with local or
global names.
v2:
- simplify the logic to hardcode "_gateway" and allow
-Dcompat-gateway-hostname=true as a temporary measure.
Cache client metadata, in order to be improve runtime behaviour under
pressure.
This is inspired by @vcaputo's work, specifically:
https://github.com/systemd/systemd/pull/2280
That code implements related but different semantics.
For a longer explanation what this change implements please have a look
at the long source comment this patch adds to journald-context.c.
After this commit:
# time bash -c 'dd bs=$((1024*1024)) count=$((1*1024)) if=/dev/urandom | systemd-cat'
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 11.2783 s, 95.2 MB/s
real 0m11.283s
user 0m0.007s
sys 0m6.216s
Before this commit:
# time bash -c 'dd bs=$((1024*1024)) count=$((1*1024)) if=/dev/urandom | systemd-cat'
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 52.0788 s, 20.6 MB/s
real 0m52.099s
user 0m0.014s
sys 0m7.170s
As side effect, this corrects the journal's rate limiter feature: we now
always use the unit name as key for the ratelimiter.
These are similar to memdup() and newdup(), but reserve one extra NUL
byte at the end of the new allocation and initialize it. It's useful
when copying out data from fixed size character arrays where NUL
termination can't be assumed.
Let's be a bit stricter in what we end up logging: ignore invalid unit
name specifications. Let's validate all input!
As we ignore unit names passed in from unprivileged clients anyway the
effect of this additional check is minimal.
(Also, no need to initialize the identifier/unit_id fields of stream
objects to NULL if empty strings are passed, the default is NULL
anyway...)
When we create a log stream connection to journald, we pass along the
unit ID. With this change we do this only when we run as system
instance, not as user instance, to remove the ambiguity whether a user
or system unit is specified. The effect of this change is minor:
journald ignores the field anyway from clients with UID != 0. This patch
hence only fixes the unit attribution for the --user instance of the
root user.
Checking for validity of a PID is relatively easy, but let's add a
helper cal for this too, in order to make things more readable and more
similar to uid_is_valid(), gid_is_valid() and friends.
Let's add a proper validation function, since validation isn't entirely
trivial. Make use of it where applicable. Also make use of
AUDIT_SESSION_INVALID where we need a marker for an invalid audit
session.
The long man page paragraph got it right: the tool is for escaping systemd unit
names, not just system unit names. Also fix the short man page paragraph
and the --help text.
Follow-up for 303608c1bc
When a service unit uses "ProtectKernelTunables=yes", it currently
remounts /sys/fs/selinux read-only. This makes libselinux report SELinux
state as "disabled", because most SELinux features are not usable. For
example it is not possible to validate security contexts (with
security_check_context_raw() or /sys/fs/selinux/context). This behavior
of libselinux has been described in
http://danwalsh.livejournal.com/73099.html and confirmed in a recent
email, https://marc.info/?l=selinux&m=149220233032594&w=2 .
Since commit 0c28d51ac8 ("units: further lock down our long-running
services"), systemd-localed unit uses ProtectKernelTunables=yes.
Nevertheless this service needs to use libselinux API in order to create
/etc/vconsole.conf, /etc/locale.conf... with the right SELinux contexts.
This is broken when /sys/fs/selinux is mounted read-only in the mount
namespace of the service.
Make SELinux-aware systemd services work again when they are using
ProtectKernelTunables=yes by keeping selinuxfs mounted read-write.
