Previously, we first assign alternative names to a network interface,
then later change its main name if requested. So, we could not assign
the name that currently assigned as the main name of an interface as an
alternative name. So, we retry to assign the previous main name as an
alternative name on later move uevent.
However, that causes some confusing situation. E.g. if a .link file has
```
Name=foo
AlternativeNames=foo baz
```
then even if the interface is renamed by a user e.g. by invoking 'ip link'
command manually, the interface can be still referenced as 'foo', as the
name is now assigned as an alternative name.
This makes the order of name assignment inverse: the main name is first
changed, and then the requested alternative names are assigned. And
udevd do not assign alternative names on move uevent.
Replaces #27506.
Let's use the same common directory as the unit logic uses.
This means we have less to clean up, and opens the door to eventually
allow unprivileged operation of the
mount_image_privately_interactively() logic.
This creates a new dir /run/systemd/mount-rootfs/ early in PID 1 that
thus always exists. It's supposed to be used by any code that creates
its own mount namespace and then sets up a new root dir to switch into.
So far in many cases we used a temporary dir (which needed explicit
clean-up) or a purpose-specific fixed dir.
Let's create a common dir instead, that always exists (as it is created
in PID 1 early on, always).
Besides making things more robust, as manual clean-up of the inode is
not necessary anymore this also opens the door for unprivileged programs
to use the same dir, since it now always exists.
Set the access mode to 555 (instead of the otherwise previously used
0755, 0700 or similar), so that unprivileged programs can access it, but
we make clear it's not supposed to be written directly to, by anyone,
not even root.
We provide the same stability for all the headers that are public.
Also, mark id128 as portable to other systems. There is really nothing in the
code that would make it hard. It would probably work out-of-the-box.
Before libsystemd-daemon, libsystemd-journal, libsystemd-id128, etc., were
merged into libsystemd, it was enough to have individual man pages for them.
But they have been delivered as one thing for many years, so it's better to
have a landing page for libsystemd. It mostly directs to individual pages
anyway.
If we change the watchdog device we should disarm the old one first.
Similar, if we open the watchdog, but then fail setting it up, disarm it
before closing it again.
This accidentally got pulled into a commit even though it was only
for local testing, let's drop it again so we correctly use erofs
when building local images.
Build option "link-portabled-shared" to build a statically linked
systemd-portabled by using
-Dlink-portabled-shared=false
on systems with full systemd stack except systemd-portabled, such
as CentOS/RHEL 9.
We currently have to resort to SSH to get more than one interactive
terminal in a mkosi qemu VM. Let's increase our options by installing
tmux in the final image, which can multiplex the serial console into
many unique terminal sessions.
When we're building OS images, we never want /etc/machine-id to contain
anything other than "uninitialized" until we actually boot the image. So
let's allow image builders to write "uninitialized" to /etc/machine-id
and if systemd-machine-id-setup is called after, make sure we don't
overwrite it.
From RFC 2131 section 4.3.1 (https://www.rfc-editor.org/rfc/rfc2131#section-4.3.1):
----
The server MUST return to the client:
- Parameters requested by the client, according to the following rules:
-- IF the server has been explicitly configured with a default
value for the parameter, the server MUST include that value
in an appropriate option in the 'option' field,
----
The sentence is not only for ACK, but for all (positive) responses, that
is DHCPOFFER and DHCPACK.
Fixes#27471.
Lennart Poettering
Yu Watanabe
Zbigniew Jędrzejewski-Szmek
nikstur
saikat0511
Daan De Meyer
Frantisek Sumsal
Robert Scheck
Luca Boccassi
Mike Yuan
Maksim Kliazovich