There's no way for us to wait for specific virtiofs tags to appear,
so we have to try and make sure that the tags are all available by
the time we try to mount any virtiofs tag. Let's try to do that by
loading the necessary modules as early as we can.
getty-generator enables serial-getty@.service for virtualizer consoles
that it can find in /sys/class/tty. To make sure this works for
virtio consoles, let's make sure we load the module is loaded early
so that the /sys/class/tty/hvc0 exists before we run getty-generator.
In one of the next commits we want to add support for importing system
credentials from qemu_fw_cfg, very early during boot. (So that we can
use the credentials therein for generators and even earlier). But that
means udev won#t load these modules for us, we have to load them
manually first.
This allows aliases to be used for the basic modules we load from pid1 before
udev is started. In #9501 the kernel renamed autofs4 to autofs, with "autofs4"
as alias, but we wouldn't load the module, because we didn't follow aliases.
The kernel change was reverted, but it's probably better to support aliases.
These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
This part of the copyright blurb stems from the GPL use recommendations:
https://www.gnu.org/licenses/gpl-howto.en.html
The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.
hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.
I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
All other places where libkmod.h is included are guarded. Build would
fail with:
In file included from ../src/core/kmod-setup.c:35:0:
../src/basic/module-util.h:23:10: fatal error: libkmod.h: No such file or directory
#include <libkmod.h>
^~~~~~~~~~~
compilation terminated.
The advantage is that is the name is mispellt, cpp will warn us.
$ git grep -Ee "conf.set\('(HAVE|ENABLE)_" -l|xargs sed -r -i "s/conf.set\('(HAVE|ENABLE)_/conf.set10('\1_/"
$ git grep -Ee '#ifn?def (HAVE|ENABLE)' -l|xargs sed -r -i 's/#ifdef (HAVE|ENABLE)/#if \1/; s/#ifndef (HAVE|ENABLE)/#if ! \1/;'
$ git grep -Ee 'if.*defined\(HAVE' -l|xargs sed -i -r 's/defined\((HAVE_[A-Z0-9_]*)\)/\1/g'
$ git grep -Ee 'if.*defined\(ENABLE' -l|xargs sed -i -r 's/defined\((ENABLE_[A-Z0-9_]*)\)/\1/g'
+ manual changes to meson.build
squash! build-sys: use #if Y instead of #ifdef Y everywhere
v2:
- fix incorrect setting of HAVE_LIBIDN2
in other way we will get a warning message:
../src/core/kmod-setup.c:83:13: warning: ‘has_virtio_rng’ defined but
not used [-Wunused-function]
static bool has_virtio_rng(void) {
^~~~~~~~~~~~~~
If true randomness is needed before udev is triggered, which would load
virtio_rng, reading /dev/random takes forever and the boot stalls for a
long time.
Delete the dbus1 generator and some critical wiring. This prevents
kdbus from being loaded or detected. As such, it will never be used,
even if the user still has a useful kdbus module loaded on their system.
Sort of fixes#3480. Not really, but it's better than the current state.
The files are named too generically, so that they might conflict with
the upstream project headers. Hence, let's add a "-util" suffix, to
clarify that this are just our utility headers and not any official
upstream headers.
./configure --enable/disable-kdbus can be used to set the default
behavior regarding kdbus.
If no kdbus kernel support is available, dbus-dameon will be used.
With --enable-kdbus, the kernel command line option "kdbus=0" can
be used to disable kdbus.
With --disable-kdbus, the kernel command line option "kdbus=1" is
required to enable kdbus support.
-ENOSYS is returned from kmod_module_probe_insert_module() if a module isn't
available, not -ENOENT. Don't spit out a warning in that case unless the
warn_if_unavailable flag is set.
Also factor out the condition into an own variable for better readability.
Traditionally, we used to warn about ipv6 being a module or being
unavailable. This was changed in b4aa82f16 ("kmod-setup: don't warn
when ipv6 can't be loaded") in a way that neither of the two conditions
will cause a log message.
Now, while running a setup without any IPv6 is completely fine and
shouldn't cause any warning, we should still warn about ipv6 being a
module instead of built-in.
To achieve this, split the boolean warn flag into two: one for a
feature not being built-in but shipped as a module, and one to
print an error when a module is entirely unavailable.
We will, however, still warn if kmod returns anything else than
-ENOENT in the attempt of loading the module, and at the very least,
turn the message into a debug log.
Whenever systemd is re-executed, it tries to create a system bus via
kdbus. If the system did not have kdbus loaded during bootup, but the
module is loaded later on manually, this will cause two system buses
running (kdbus and dbus-daemon in parallel).
This patch makes sure we never try to create kdbus buses if it wasn't
explicitly requested on the command-line.
The module is currently no auto-loadable (and this is unlikely to change
anytime soon, given it's API is via getsockopt/setsockopt). It is needed
by networkd and nspawn currently.
Users who really don't like the module to be loaded have the option to
blacklist it still, or not compile it at all. But for all others this
should make things work out-of-the-box.
This patch removes includes that are not used. The removals were found with
include-what-you-use which checks if any of the symbols from a header is
in use.
- Rename log_meta() → log_internal(), to follow naming scheme of most
other log functions that are usually invoked through macros, but never
directly.
- Rename log_info_object() to log_object_info(), simply because the
object should be before any other parameters, to follow OO-style
programming style.
This change has two benefits:
- The format string %m will now resolve to the specified error (or to
errno if the specified error is 0. This allows getting rid of a ton of
strerror() invocations, a function that is not thread-safe.
- The specified error can be passed to the journal in the ERRNO= field.
Now of course, we just need somebody to convert all cases of this:
log_error("Something happened: %s", strerror(-r));
into thus:
log_error_errno(-r, "Something happened: %m");
kdbus has seen a larger update than expected lately, most notably with
kdbusfs, a file system to expose the kdbus control files:
* Each time a file system of this type is mounted, a new kdbus
domain is created.
* The layout inside each mount point is the same as before, except
that domains are not hierarchically nested anymore.
* Domains are therefore also unnamed now.
* Unmounting a kdbusfs will automatically also detroy the
associated domain.
* Hence, the action of creating a kdbus domain is now as
privileged as mounting a filesystem.
* This way, we can get around creating dev nodes for everything,
which is last but not least something that is not limited by
20-bit minor numbers.
The kdbus specific bits in nspawn have all been dropped now, as nspawn
can rely on the container OS to set up its own kdbus domain, simply by
mounting a new instance.
A new set of mounts has been added to mount things *after* the kernel
modules have been loaded. For now, only kdbus is in this set, which is
invoked with mount_setup_late().
Daan De Meyer
Lennart Poettering
Yu Watanabe
Ludwig Nussel
Zbigniew Jędrzejewski-Szmek
0xAX
Harald Hoyer
Dave Reisner
Daniel Mack
Thomas Hindoe Paaboel Andersen
David Herrmann
Kay Sievers