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Limits should be enforced, but not in a way real setups collide with
them.
There have been multiple reports that current limits are too low, hence
raise them 8x.
Fixes: #24852
Previously, GREEDY_REALLOC_APPEND would compile perfectly fine and cause
subtle memory corruption if the caller messes up the type they're passing
in (i.e. by forgetting to pass-by-reference when appending a Type* to an
array of Type*). Now this will lead to compilation failure
This addresses #11112 fully. It mostly was addressed by
99620f457e already, but for fds not
even passed to the fdstore, this adds the missing asynchronous close
codepath.
Fixes: #11112
This will allow units (scopes/slices/services) to override the default
systemd-oomd setting DefaultMemoryPressureDurationSec=.
The semantics of ManagedOOMMemoryPressureDurationSec= are:
- If >= 1 second, overrides DefaultMemoryPressureDurationSec= from oomd.conf
- If is empty, uses DefaultMemoryPressureDurationSec= from oomd.conf
- Ignored if ManagedOOMMemoryPressure= is not "kill"
- Disallowed if < 1 second
Note the corresponding dbus property is DefaultMemoryPressureDurationUSec
which is in microseconds. This is consistent with other time-based
dbus properties.
Parsing DefaultMemoryPressureDurationSec= is currently split between
conf parser, main() and manager_start() methods. This commit centralizes
parsing and bounds checking logic within a single custom conf parser
function.
../src/resolve/resolved-bus.c: In function ‘call_link_method’:
../src/resolve/resolved-bus.c:1769:16: warning: ‘l’ may be used uninitialized [-Wmaybe-uninitialized]
1769 | return handler(message, l, error);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
../src/resolve/resolved-bus.c:1755:15: note: ‘l’ was declared here
1755 | Link *l;
| ^
../src/resolve/resolved-bus.c: In function ‘bus_method_get_link’:
../src/resolve/resolved-bus.c:1828:13: warning: ‘l’ may be used uninitialized [-Wmaybe-uninitialized]
1828 | p = link_bus_path(l);
| ^~~~~~~~~~~~~~~~
../src/resolve/resolved-bus.c:1816:15: note: ‘l’ was declared here
1816 | Link *l;
| ^
Similar to 24a4542c. 24a4542c can only be set 1 in 1s at most,
sometimes we may need to set to something else(such as 1 in 2s).
So it's best to let the user decide.
This also allows users to solve #34690.
Otherwise, if the process forks child processes, then the arguments
cannot be used from them.
To avoid potential issues like the one fixed by
6d3012bab4.
Nested mounts should be carried over from host to overlayfs to overlayfs
(and back to host if unmerged). Otherwise you run into hard to debug
issues where merging extensions means you can't unmount those nested mounts
anymore as they are hidden by the overlayfs mount.
To fix this, before unmerging any previous extensions, let's move the nested
mounts from the hierarchy to the workspace, then set up the new hierachy, and
finally, just before moving the hierarchy into place, move the nested mounts
back into place.
Because there might be multiple nested mounts that consists of one or more
mounts stacked on top of each other, we make sure to move all stacked mounts
properly to the overlayfs. The kernel doesn't really provide a nice way to do
this, so we create a stack, pop off each mount onto the stack and then pop from
the stack again to the destination to re-establish the stacked mounts in the same
order in the destination.
Let's debug log the returned dbus error where we want the logging, but
don't log it, where we don't.
This removes the noisy logging from the property handler for the
CanLiveMount property, but keeps it in place for the MountImage() method
call where we want it.
Alternative to #34175
Follow-up for 5162829ec8 and 1cafbecabe
'Default Memory Pressure Duration' field in oomctl, which can be configured
with DefaultMemoryPressureDurationSec= in oomd.conf, is a global config.
Let's check it earlier.
This also drops unnecessary cleanup at the beginning.
Fedora and friends has a drop-in config for the settings in
/usr/lib/systemd/user/slice.d/ . Hence, settings in the main .slice may be
overridden. Let's set below in a drop-in with higher decimal prefix.
Also, rename override.conf -> 99-managed-oom-preference.conf for the same reason.
Ensure that we always attempt to mount the `ESP` partition to `/boot`
when there is no `XBOOTLDR` partition.
Fixes an issue when booting without a `XBOOTLDR` partition and an empty
root partition, since it would mount the `ESP` partition to `/efi/`
unconditionally causing boot entries to not be under `/boot/` as
recommended by the Boot Loader Specification.
