Device tree overlays are a convenient way to patch device trees, e.g.,
add new devices to a device tree or enable/disable devices. This is
useful for non-discoverable but configurable hardware. Device tree
overlays are commonly used for displays on the Raspberry Pi or for
describing the content of FPGA bitstreams.
Add the devicetree-overlay key to boot loader specification entries to
allow boot loaders to apply overlays.
See #13537
It was done for mount units already (see commit 142b8142d7). For the
same reasons and for consistency we should also stop activating automagically
swaps when their device is hot-plugged.
It is pretty common for the service to fail in the initramfs (for example
because certain modules have not been copied over or haven't been built yet in
case of dkms modules). This seems to be more trouble than it is worth. Let's
change the service to simply log any missing modules at error level, but not
fail the whole service.
https://bugzilla.redhat.com/show_bug.cgi?id=1254340
From the bug:
> According to the documentation of systemd.automount if the automoint point is
> automagically created if it doesn't exist yet. This ofcourse means the
> filesystem underneath has to be writable, which for / means not only does
> -.mount need to be started but also systemd-remount-fs.service has to be run,
> which isn't guaranteed by the default automount dependencies.
>
> For .mount units there is an automatic default After= dependency on
> local-fs-pre.target, would probably make sense to do the same for automount
> units to avoid it failing on the corner-case where it has to create directory.
Fixes#13306.
Allow earlier PAM modules to set `systemd.runtime_max_sec`. If they do,
parse it and set it as the `RuntimeMaxUSec=` property of the session
scope, to limit the maximum lifetime of the session. This could be
useful for time-limiting login sessions, for example.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #12035
Just as `RuntimeMaxSec=` is supported for service units, add support for
it to scope units. This will gracefully kill a scope after the timeout
expires from the moment the scope enters the running state.
This could be used for time-limited login sessions, for example.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #12035
Per https://github.com/mesonbuild/meson/issues/5003, ternary doesn't
always work as function args with older versions of meson.
Expand out ternary statements to stay compatible with older versions (< 0.49).
As discussed on systemd-devel [1], in Fedora we get lots of abrt reports
about the watchdog firing [2], but 100% of them seem to be caused by resource
starvation in the machine, and never actual deadlocks in the services being
monitored. Killing the services not only does not improve anything, but it
makes the resource starvation worse, because the service needs cycles to restart,
and coredump processing is also fairly expensive. This adds a configuration option
to allow the value to be changed. If the setting is not set, there is no change.
My plan is to set it to some ridiculusly high value, maybe 1h, to catch cases
where a service is actually hanging.
[1] https://lists.freedesktop.org/archives/systemd-devel/2019-October/043618.html
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1300212
Notifications are only sent for the top object, and not for individual
links. This should be enough for the most obvious cases where somebody
just cares about the effective set of servers.
Fixes#13721.
