Let's move some logic from _DEFINE_MAIN_FUNCTION() and other places
in main-func.h into functions that we implement in main-func.c to
allow moving some included headers from the header to the .c file.
Now that the necessary functions from log.h have been moved to macro.h,
we can stop including log.h in macro.h. This requires modifying source
files all over the tree to include log.h instead.
DDIs may contain multiple versions of the same OS, or even multiple
OSes. Hence it makes sense to not just pick the "newest", whatever that
might be, but only partitions associated with specific images, or in a
specific version.
Let's a concept for such filtering: a per-designator glob expression
that can be applied to the partition label string, and can be used for
such filtering.
Usecase: when picking UKI belonging to OS image X in version Y, make
sure we only pick a /usr/ partition belonging to X in version Y, and a
root and home partition belonging to X in any version.
This only adds the basic infrastructure, but doesn't actually expose it
anywhere.
When using vmspawn on particleos image we really want that the TPM state
is retained between invocation, since the encryption key is locked to
the TPM after all. Hence let's support that.
This adds --tpm-state= which can be used to configure a path to store
the TPM state in. It can also be used to force tpm state to be transient
or to let vmpsawn pick the path automatically.
While we are at it, let's also revamp the runtime dir handling in
vmspawn: let's no longer place the sockets the auxiliary services listen
on within their own runtime directories. Instead, just drop the runtime
directories for them entirely (since neither virtiofsd, nor swtpm
actually use them). Also, let systemd clean up the sockets
automatically.
So far we'd directly use the pidfd passed into event_add_child_pidref(),
hoping it would not be closed by the caller before we are done. This was
violated by vmspawn however.
Let's make this safe, and simply duplicate the fd, and make us
independent of the caller.
Admittedly, some of our glyphs _are_ special, e.g. "O=" for SPECIAL_GLYPH_TOUCH ;)
But we don't need this in the name. The very long names make some invocations
very wordy, e.g. special_glyph(SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY).
Also, I want to add GLYPH_SPACE, which is not special at all.
In one of the next commits we'd like to introduce a concept of
optionally hashing the hostname from the machine ID. For that we we need
to optionally back gethostname_full() by code involving sd-id128, hence
let's move it from src/basic/ to src/shared/, since only there we are
allowed to use our public APIs.
virtconsole is the modern way to set up a headless serial connection
to a virtual machine so let's make use of it instead of -serial. This
also allows us to get rid of the per architecture serial console device
names and makes vmspawn more consistent with mkosi qemu which already uses
virtconsole.
We nowadays support unprivileged invocation of systemd-nspawn +
systemd-vmspawn, but there was no support for discovering suitable disk
images (i.e. no per-user counterpart of /var/lib/machines). Add this
now, and hook it up everywhere.
Instead of hardcoding machined's, importd's, portabled's, sysupdated's
image discovery to RUNTIME_SCOPE_SYSTEM I introduced a field that make
the scope variable, even if this field is always initialized to
RUNTIME_SCOPE_SYSTEM for now. I think these four services should
eventually be updated to support a per-user concept too, this is
preparation for that, even though it doesn't outright add support for
this.
This is for the largest part not user visible, except for in nspawn,
vmspawn and the dissect tool. For the latter I added a pair of
--user/--system switches to select the discovery scope.
This tries to get rid of most manual sigprocmask() changes, in favour
of:
1. The SD_EVENT_SIGNAL_PROCMASK flag to sd_event_add_signal()
2. The sd_event_set_signal_exit() call for handling SIGTERM/SIGINT
3. Move masking of SIGWINCH into ptyfwd, out of nspawn/vmspawn/run
And while we are at it get rid of a bunch of event source fields whose
lifetime is bound to the sd_event object they belong to anyway, and make
use of the "floating" event source feature of sd-event instead.
The tap network device should be called "vt-", so that that the
80-vm-vt.network file we ship by default actually matches against it.
Also, turn off any qemu callout stuff, networkd is smart enough to
handle all this on its own, without ugly callouts.
It's time. sd-json was already done earlier in this cycle, let's now
make sd-varlink public too.
This is mostly just a search/replace job of epical proportions.
I left some functions internal (mostly IDL handling), and I turned some
static inline calls into regular calls.
Stream sockets are stream sockets, i.e. they won#t give us the full data
right-away, we must buffer locally and read until we hit EOF. Hence do
so.
moreover, make sure to close the fd once we are done, otherwise the
sender might block on us.
This mimics what we do in nspawn: if registration is enabled we'll let
machined allocate a scope unit for us. When --keep-unit is used we'll
register without creating a new scope.
This brings behaviour more inline with what nspawn does, exposing the
same sets of options.
Daan De Meyer
Arian van Putten
Nick Labich
Lennart Poettering
Yu Watanabe
Zbigniew Jędrzejewski-Szmek
Jörg Behrmann
Martin Hundebøll
Mike Yuan
Antonio Alvarez Feijoo
Henry Chen
Mantas Mikulėnas
Luca Boccassi
Robin Lee