For "wizard" style interactive tools it's very annoying if they are
interrupted by kernel log output or PID1's status output. let's add some
infra to disable this temporarily. I decided to implement this as an IPC
service so that we can make this robust: if the client request the
muting dies we can automatically unmute again.
This is hence a tiny varlink service, but it can also be started
directly from the cmdline.
All other resource control features work as 'best-effort', and failures
in applying them are handled gracefully. However, unlike the other features,
we tested if the BPF programs can be loaded and refuse execution on failure.
Moreover, the previous behavior of testing loading BPF programs had
inconsistency: the test was silently skipped if the cgroup for the unit does
not exist yet, but tested when the cgroup already exists.
Let's not handle failures in loading custom BPF programs as critical, but
gracefully ignore them, like we do for the other resource control features.
Follow-up for fab347489f.
This is split out of #38764.
It mostly introduces the "chrome" stuff that puts a blue at the top of
bottom of the terminal screen when going through interactive tools such
as firstboot, homed-firstboot, and (in future) systemd-sysinstall).
it also introduces a generic "prompt_loop()" helper thatn queries the
user for some option in a loop until the rsponse matches certain
requirements. It's a generalization of a function of the same name that
so far only existed in firstboot.c. The more generic version will be
reused in a later PR by homed-firstboot and by sysinstall.
We'll soon have three different kind of interactive "wizard"-like console
UIs: systemd-firstboot, homectl firstboot and soon systemd-sysinstall.
Let's give them a limited, recognizable visual identity, to distinguish
them from the usual console output: let's add a bit of "chrome" to the
top and bottom of the screen, that we show during ther wizards, but hide
again afterwards.
This makes use of the DECSTBM sequence that reduces the scrolling area
by chopping off blocks from the top or bottom of the screen. The
sequence is quite standard, given it has been part of VT100 already.
xterm, vte, Linux console all support it just fine.
Current methods take a numeric PID, but we know that is unreliable for
the usual reasons. Add variants that take a PIDFD instead, or a
PID + PIDFDID combination for remote users.
Add support for generating names like wldN based on DeviceTree aliases.
DeviceTree alias names follow de facto conventions. As of writing, there
are so far two ways WLAN devices are represented in DeviceTree aliases
in upstream Linux DTS files:
- Firstly, as wifi0, used for example in t600x-j314-j316.dtsi
- Secondly, as ethernet0 or ethernet1, used for example in
sun8i-q8-common.dtsi, with a comment saying the reason is to "Make
u-boot set mac-address for wifi without an eeprom"
So we need to handle both while generating names. Refactor most of the
logic in names_devicetree() into a helper
names_devicetree_alias_prefix() that takes an alias_prefix instead of
hardcoding "ethernet", and, in the new names_devicetree():
- For prefix "en", use alias_prefix "ethernet"
- For prefix "wl", try alias_prefix "wifi" first, and if that was not
found, fall back to alias_prefix "ethernet"
Since this is a naming scheme change, also gate this behind
NAMING_DEVICETREE_ALIASES_WLAN and NAMING_V259, and document this
change.
Add support for generating names like wldN based on DeviceTree aliases.
DeviceTree alias names follow de facto conventions. As of writing, there
are so far two ways WLAN devices are represented in DeviceTree aliases
in upstream Linux DTS files:
- Firstly, as wifi0, used for example in t600x-j314-j316.dtsi
- Secondly, as ethernet0 or ethernet1, used for example in
sun8i-q8-common.dtsi, with a comment saying the reason is to "Make
u-boot set mac-address for wifi without an eeprom"
Therefore for prefix "wl", try alias_prefix "wifi" first, and if that
was not found, fall back to alias_prefix "ethernet"
Since this is a naming scheme change, also gate this behind
NAMING_DEVICETREE_ALIASES_WLAN and NAMING_V259, and document this
change.
Currently, a 15-second timeout is hardcoded for the key enrollment
process while waiting for user confirmation. Make this value configurable
to allow the option of disabling user input, such as during automatic key
provisioning at the factory.
Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>
In systemd <= 257, each set_audit tristate value had special meaning,
- true: enable the kernel audit subsystem,
- false: disable the kernel audit subsystem,
- negative: keep the current kernel audit subsystem state.
And the default is true, rather than negative. So, users sometimes
explicitly pass an empty string to Audit= setting to keep the state.
But since f48cf2a96d (v258), the negative
value is mistakenly used as 'really unspecified' even if an empty string
is explicitly specified.
This makes negative values handled as unspecified as usual, and assign a new
positive value AUDIT_KEEP for when an empty string is explicitly specified.
Also, make the Audit= setting accept "keep" setting, and suggest to use "keep"
rather than an empty string.
Fixes a regression caused by f48cf2a96d (v258).
Fixes#39057.
The options `--booted` is compared with the command `systemctl
is-system-running`, but the return values have differnt meanings and it
is not a drop-in.
let's skip over credentials we cannot decode when they are found with
ImportCredential=. When installing an OS on some disk and using that
disk on a different machine than assumed we'll otherwise end up with a
broken boot, because the credentials cannot be decoded when starting
systemd-firstboot. Let's handle this somewhat gracefully.
This leaves handling for LoadCredential=/SetCredential= as it is (i.e.
failure to decrypt results in service failure), because it is a lot more
explicit and focussed as opposed to ImportCredentials= which looks
everywhere, uses globs and so on and is hence very vague and unfocussed.
Fixes: #34740
This changes the instances of lexical to lexicographic, thus making it easier
to grep for instances of lexicographic order, since there's only one variant of
the word to consider.
Lexicographic is chosen since there are slightly fewer instances of lexical and
lexicographic seems a better fit than lexical after checking a few
dictionaries.
The words lexical, lexicographic, and lexicographical are synonyms in
computing, meaning an alphabetical order. Both the Oxford dictionary and
Merriam-Webster make no distinction between lexicographic and lexicographical,
with only Wiktionary adding a more precise meaning of
Meeting lexicographical standards or requirements; worthy of being included
in a dictionary. [1]
Since, outside of computing, lexicographic(al) has the more specific meaning
pertaining to lexicography, i.e. the editing or making of dictionaries [2], and
lexical only has this as a secondary meaning after its linguistic meaning [3],
lexicographic fits the meaning of including and ordering entries better.
[1] https://en.wiktionary.org/wiki/lexicographical#English
[2] https://www.merriam-webster.com/dictionary/lexicographic
[3] https://www.oed.com/dictionary/lexical_adj
This allows for more liberal usage of logging functionality as messages
will no longer always show up on screen, regardless of urgency. The log
level to use can be configured through an SMBIOS type 11 string
(`io.systemd.boot.loglevel=`) or by using the `log-level` option in
loader.conf. Valid values are debug, info, notice, warning, err, crit,
alert, and emerg. By default, info will be used.
As explained in https://github.com/systemd/systemd/issues/37892, it
would be nice to define per-partition PCRs/key file to use.
The global default config will be still defined as cmdline options, and
`TPM2PCRs=` and `KeyFile=` will be overriden by them.
Implements the ability to add recovery keys to existing user accounts
via homectl update --recovery-key=yes. Previously, recovery keys could
only be configured during initial user creation, requiring users to
recreate their entire home directory to add recovery keys later.
Fixes: #23602
This PR implements what is proposed in
https://github.com/systemd/systemd/issues/37992.
Having a global config file that supports the same cmdline options for
sysext/confext allows the user to customize the behavior of
systemd-sysext.service unit too, without the need of hacking the service
manually.
The global config will live in
`CONF_PATHS_STRV()/systemd/{sysext/confext}.conf` and it will be
overridden by cmdline, so it is possible to customize a run if
`systemd-sysext` is executed manually.
For now support `--mutable=` (`Mutable`) and `--image-policy=`
(`ImagePolicy`).
--no-hostname is one of the switches I use very often. In particular,
when looking at CI logs, the hostname is almost never interesting.
-H is not yet used in journalctl, because journal operates locally, but
will want it if display of remote journals is implemented. Use -W.
Commit d7bea6b6 ("nspawn: introduce an option for specifying network
namespace path") already did most of the work here enabling a command
line option for specifying the namespace path for a given container.
Someone even took care of the merging code in merge_settings as though
this already worked. All that's then needed is to add a line to the
nspawn-gperf.gperf file to actually enable being able to specify
NamespacePath from nspawn files as well.
This greatly simplifies how we configure nspawn containers by being able
to give all the options we need in .nspawn files instead of needing to
also use command line parameters.
Closes: #27188
These options were added in v255 with commit
cb341090d0, but were not documented as
standalone options in loader.conf. See #29440 for more information.
Add repart.d KeyFile= option with the same syntax as --key-file.
This allows a per-partition key file encryption, and not rely on a global key
applicable to all partitions.
The global --key-file overrides KeyFile config. If none of them is
defined, rely on default.
Add repart.d TPM2PCRs= option with the same syntax as --tpm2-pcrs.
This allows a per-partition pcr binding, and not rely on a global config
applicable to all partitions.
The global --tpm2-pcrs overrides TPM2PCRs config. If none of them
is defined, rely on default.
Lennart Poettering
Yu Watanabe
Daan De Meyer
Luca Boccassi
dramforever
Igor Opaniuk
Joshua Krusell
Christian Hesse
Andreas Schneider
Kai Wohlfahrt
Jörg Behrmann
Felix Pehla
Govind Venugopal
Zbigniew Jędrzejewski-Szmek
Alan Brady
Christopher Head
Raura
Luca Boccassi
Antonio Alvarez Feijoo
наб
Allison Karlitskaya
Emanuele Giuseppe Esposito