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The phrase "routing domains" is used to mean both route-only domains and search
domains. Route-only domains are always called like that, and not just "route domains".
Some paragraphs are reordered to describe synthetisized records first, then
LLMNR, then various ways quries are routed.
Fixes#8928, hopefully.
commit f00c36641a enabled
crash_kexec_post_notifiers by default regardless of whether pstore
is enabled or not.
The original intention to enabled this option by default is that
it only affects kernel post-panic behavior, so should have no harm.
But this is not true if the user wants a reliable kdump.
crash_kexec_post_notifiers is known to cause problem with kdump,
and it's documented in kernel. It's not easy to fix the problem
because of how kdump works. Kdump expects the crashed kernel to
jump to an pre-loaded crash kernel, so doing any extra job before
the jump will increase the risk.
It depends on the user to choose between having a reliable kdump or
some other post-panic debug mechanic.
So it's better to keep this config untouched by default, or it may put
kdump at higher risk of failing silently. User should enable it by
uncommenting the config line manually if pstore is always needed.
Also add a inline comment inform user about the potential issue.
Thanks to Dave Young for finding out this issue.
Fixes#16661
Signed-off-by: Kairui Song <kasong@redhat.com>
A comment indicates the start of the new contents of the override file,
and another indicates that lines following it will be discarded once
editing is finished.
The contents of the unit file and drop-ins are listed out after this
last marker.
Adds WRITE_STRING_FILE_TRUNCATE to set O_TRUNC when opening a file.
Thanks to cgzones for providing the required SELinux function calls.
Co-authored-by: Christian Göttsche <cgzones@googlemail.com>
For encrypted block devices that we need to unlock from the initramfs,
we currently rely on dracut shipping `cryptsetup.target`. This works,
but doesn't cover the case where the encrypted block device requires
networking (i.e. the `remote-cryptsetup.target` version). That target
however is traditionally dynamically enabled.
Instead, let's rework things here by adding a `initrd-cryptsetup.target`
specifically for initramfs encrypted block device setup. This plays the
role of both `cryptsetup.target` and `remote-cryptsetup.target` in the
initramfs.
Then, adapt `systemd-cryptsetup-generator` to hook all generated
services to this new unit when running from the initrd. This is
analogous to `systemd-fstab-generator` hooking all mounts to
`initrd-fs.target`, regardless of whether they're network-backed or not.
Why this change
---------------
Assumption - PAM's auth stack is properly configured.
Currently account pam_systemd_home.so returns PAM_SUCCESS for non
systemd-homed users, and a variety of return values (including
PAM_SUCCESS) for homed users.
account pam_unix returns PAM_AUTHINFO_UNAVAIL for systemd-homed
users, and a variety of return values (including PAM_AUTHINFO_UNAVAIL)
for normal users.
No possible combination in the pam stack can let us preserve the
various return values of the modules. For example, the configuration
mentioned in the manpage causes account pam_unix to never be reached
since pam_systemd_home just returns a success for ordinary users. Users
with expired passwords are allowed to log in because a check cannot be
made.
More configuration examples and why they don't work are mentioned
in #16906 and the downstream discussion linked there.
After this change
-----------------
account pam_unix will continue to return wrong value for homed users.
But we can skip the module conditionally using the return value from
account pam_systemd_home. We can already do this with the auth and
password modules.
This creates a private mount namespace for test-mountpint-util, with all
propagation from the host turned off. This gives us the guarantee that
/proc/self/mountinfo remains fixed and constant while we operate,
removing potential races against other unrelated stuff running on the
system that changes the mount table.
Prompted-by: #17050
(I doubt this actually fixes 17050, this is mostly to make sure that we
aren't possibly affected by such races in our test)
Failed to enter shared memory directory multipath: Permission denied
→
Failed to enter shared memory directory /dev/shm/multipath: Permission denied
When looking at nested directories, we will print only the final two elements
of the path. That is still more useful than just the last component of the
path. To print the full path, we'd have to allocate the string, and since the
error occurs so very rarely, I think the current best-effort approach is
enough.
So far we didn't allow empty properties, but it makes sense to do so, for
example to distinguish empty data from lack of data. It also makes it easy to
override properties (back to the empty) value for specific cases.
Using `bootctl set-default @current` will set the default loader entry
to the currently booted entry as read from the `LoaderEntrySelected` EFI
variable.
Also `bootctl set-oneshot @current` will set the oneshot loader entry to
the current booted entry.
Correspondingly `@default` and `@oneshot` can be used to read from the
LoaderEntryDefault and LoaderEntryOneshot EFI variables.
Recently the Semaphore CI started to fail pretty much constantly due to
GPG key verification fails. After a quick search this is a pretty common
issue with the Ubuntu keyserver in the last month. To make this,
hopefully, a bit more stable, let's use a few different keyservers in
case some of them fail.
Previously, .device units generated by SYSTEMD_ALIAS= udev properties
are not supported to specify devices for e.g. 'udevadm info'.
Before:
```
$ udevadm info sys-subsystem-net-devices-enp0s31f6.device
Unknown device "sys-subsystem-net-devices-enp0s31f6.device": No such device
```
After:
```
$ ./udevadm info sys-subsystem-net-devices-enp0s31f6.device
P: /devices/pci0000:00/0000:00:1f.6/net/enp0s31f6
L: 0
E: DEVPATH=/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6
E: INTERFACE=enp0s31f6
E: IFINDEX=2
E: SUBSYSTEM=net
E: USEC_INITIALIZED=25317523
E: ID_NET_NAMING_SCHEME=v245
(snip)
```
By making them unsigned comparing them with other sizes is less likely
to trigger compiler warnings regarding signed/unsigned comparisons.
After all sizes (i.e. size_t) are generally assumed to be unsigned, so
these should be too.
Prompted-by: https://github.com/systemd/systemd/pull/17345#issuecomment-709402332
The properties are not unquoted by udev, so the quotes effectively became part
of the value.
Even though those properties were added quite a while ago
(086c001e29,
d7d31692bf), they never started being used
(because of issues with having multiple layouts), see
https://gitlab.gnome.org/GNOME/mutter/-/issues/906,
https://bugzilla.gnome.org/show_bug.cgi?id=775681.
Let's remove the quotes while we still can.
From https://bugzilla.gnome.org/show_bug.cgi?id=775681#c7:
> Note to self: the values for XKB_FIXED_LAYOUT and XKB_FIXED_VARIANT are
> quoted, meaning that we need to remove the quotes before passing the values
> from udev_device_get_property_value() to xkb_keymap_new_from_names()
> otherwise the compilation of the keymap fails (please don't ask how I found
> out...)
`route_get()` compares input with existing routes, however previously,
the input may did not have information about gateway. So, the
comparison result might be incorrect, and the foregoing set_put() might
return -EEXIST.
With the switch from log_debug() to log_debug_errno() in commit c413bb28df
systemd-update-done would fail without any error message if /etc
or /var were read-only. This restores the previous behaviour to
silently ignore these directories again.
