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Currently ask_password_auto() will always try to store the password into
the user keyring. Let's make this configurable so that we can configure
ask_password_auto() into the session keyring. This is required when working
with user namespaces, as the user keyring is namespaced by user namespaces
which makes it impossible to share cached keys across user namespaces by using
the user namespace while this is possible with the session keyring.
In mkosi, we want an easy way to set the keyring timeout for every
tool we invoke that might use systemd-ask-password to query for a
password which is then stored in the kernel keyring. Let's make this
possible via a new $SYSTEMD_ASK_PASSWORD_KEYRING_TIMEOUT_SEC environment
variable.
Using an environment variable means we don't have to modify every separate
tool to add a CLI option allowing to specify the timeout. In mkosi specifically,
we'll set up a new session keyring for the mkosi process linked to the user keyring
so that any pins in the user keyring are used if available, and otherwise we'll query
for and store password in mkosi's session keyring with a zero timeout so that they stay
in the keyring until the mkosi process exits at which point they're removed from the
keyring.
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.
When running unprivileged, checking /proc/1/root doesn't work because
it requires privileges. Instead, let's add an environment variable so
the process that chroot's can tell (systemd) subprocesses whether
they're running in a chroot or not.
Like much English text, the systemd documentation uses "may not" in the
sense of both "will possibly not" and "is forbidden to". In many cases
this is OK because the context makes it clear, but in others I felt it
was possible to read the "is forbidden to" sense by mistake: in
particular, I tripped over "the target file may not exist" in
systemd.unit(5) before realizing the correct interpretation.
Use "might not" or "may choose not to" in these cases to make it clear
which sense we mean.
Some people are just sad, sad lost souls who don't like even the tiniest
ray of color in their life. Let's add an env var knob for allowing them
to turn the background tinting off, to drive the last bit of color from
their life so that they can stay in their grey grey life.
This also drop the support of /run/systemd/netif/persistent-storage-ready,
as the file is anyway removed when networkd is stopped.
Let's use $SYSTEMD_NETWORK_PERSISTENT_STORAGE_READY=1 instead on testing.
This introduces $SYSTEMD_KEYMAP_DIRECTORIES environment variable to
override the hardcoded keymap directories.
I think it is not necessary to provide the first class configuration
option for controlling the keymap directories, but it is not good to
hardcode the paths. So, let's introduce an environment variable to
override that.
Prompted by #31759.
Closes#31759.
Whenever a home directory is in a locked state, accessing the files of
the home directory is extremely likely to cause the thread to hang. This
will put the session in a strange state, where some threads are hanging
due to file access and others are not hanging because they are not
trying to access any of the user's files.
This can lead to a whole slew of consequences. For example, imagine a
likely situation where the Wayland compositor is not hanging, but the
user's open apps are. Eventually, the compositor will detect that none
of the apps are responding to its pings, assume that they're frozen
(which they are), and kill them. The systemd user instance can end up in
a similarly confused state and start killing user services. In the worst
case, killing an app at an unexpected moment can lead to data loss.
The solution is to suspend execution of the whole user session by
freezing the user's slice.
Previously, we'd only freeze user.slice in the case of s2h, because we
didn't want the user session to resume while systemd was transitioning
from suspend to hibernate.
This commit extends this freezing behavior to all sleep modes.
We also have an environment variable to disable the freezing behavior
outright. This is a necessary workaround for someone that has hooks
in /usr/lib/systemd/system-sleep/ which communicate with some
process running under user.slice, or if someone is using the proprietary
NVIDIA driver which breaks when user.slice is frozen (issue #27559)
Fixes#27559
This is a kinda a follow-up for ce266330fc: it
makes resolved authoritative on our local hostname, and never contacts
DNS anymore for it.
We effectively already were authoritative for it, except if the user
queried for other RR types than just A/AAAA. This closes the gap and
refuses routing other RR type queries to DNS.
Fixes: #23662
It turns out it's mostly PKCS11 that supports the URI format,
and other engines just take files. For example the tpm2-tss-openssl
engine just takes a sealed private key file path as the key input,
and the engine needs to be specified separately.
Add --private-key-source=file|engine:foo|provider:bar to
manually specify how to use the private key parameter.
Follow-up for 0a8264080a
Most of our kernel cmdline options use underscores as word separators in
kernel cmdline options, but there were some exceptions. Let's fix those,
and also use underscores.
Since our /proc/cmdline parsers don't distinguish between the two
characters anyway this should not break anything, but makes sure our own
codebase (and in particular docs and log messages) are internally
consistent.
This reverts commit 5e8ff010a1.
This broke all the URLs, we can't have that. (And actually, we probably don't
_want_ to make the change either. It's nicer to have all the pages in one
directory, so one doesn't have to figure out to which collection the page
belongs.)
When running an image that cannot be mounted (e.g.: key missing intentionally
for development purposes), there's a retry loop that takes some time
and slows development down. Add an env var to disable it.
varlink_server_listen_auto() is supposed to be the one-stop solution for
turning simple command line tools into IPC services. They aren't easy to
test/debug however, since you have to invoke them through a service
manager.
Let's make this easier: if the SYSTEMD_VARLINK_LISTEN env var is set,
let's listen on the socket specified therein. This makes things easier
to gdb: just run the service from the cmdline.
To make things symmetric to the $SYSTEMD_SSH logic that the varlink
transport supports, let's also honour such a variable in sd-bus when
picking ssh transport.
This uses openssh 9.4's -W support for AF_UNIX. Unfortunately older versions
don't work with this, and I couldn#t figure a way that would work for
older versions too, would not be racy and where we'd still could keep
track of the forked off ssh process.
Unfortunately, on older versions -W will just hang (because it tries to
resolve the AF_UNIX path as regular host name), which sucks, but hopefully this
issue will go away sooner or later on its own, as distributions update.
Fedora is still stuck at 9.3 at the time of posting this (even on
Fedora), even though 9.4, 9.5, 9.6 have all already been released by
now.
Example:
varlinkctl call -j ssh:root@somehost:/run/systemd/io.systemd.Credentials io.systemd.Credentials.Encrypt '{"text":"foobar"}'
Otherwise, udev workers cannot detect slow programs invoked by
IMPORT{program}=, PROGRAM=, or RUN=, and whole worker process may be
killed.
Fixes#30436.
Co-authored-by: sushmbha <sushmita.bhattacharya@oracle.com>
Same as $KERNEL_INSTALL_BYPASS, but for hwdb. This will speed up
cross architecture image builds in mkosi as I can disable package
managers from running the costly hwdb update stuff in qemu user
mode and run it myself with a native systemd-hwdb with --root=.
This code doesn't link when gcc+lld is used:
$ LDFLAGS=-fuse-ld=lld meson setup build-lld && ninja -C build-lld udevadm
...
ld.lld: error: src/shared/libsystemd-shared-255.a(libsystemd-shared-255.a.p/cryptsetup-util.c.o):
symbol crypt_token_external_path@@ has undefined version
collect2: error: ld returned 1 exit status
As a work-around, restrict it to developer mode.
Closes https://github.com/systemd/systemd/issues/30218.
don't let the devices to be announced just as model "Linux". Let's instead
propagate the underlying block device's model. Also do something
reasonably smart for the serial and firmware version fields.
Introduce a new env variable $SYSTEMD_NSPAWN_CHECK_OS_RELEASE, that can
be used to disable the os-release check for bootable OS trees. Useful
when trying to boot a container with empty /etc/ and bind-mounted /usr/.
Resolves: #29185
I tried to get something similar upstream:
https://gitlab.com/cryptsetup/cryptsetup/-/issues/846
But no luck, it was suggested I use ELF interposition instead. Hence,
let's do so (but not via ugly LD_PRELOAD, but simply by overriding the
relevant symbol natively in our own code).
This makes debugging tokens a ton easier.
Automatically softreboot if the nextroot has been set up with an OS
tree, or automatically kexec if a kernel has been loaded with kexec
--load.
Add SYSTEMCTL_SKIP_AUTO_KEXEC and SYSTEMCTL_SKIP_AUTO_SOFT_REBOOT to
skip the automated switchover.
On normal systems, triggering a timeout should be a bug in code or
configuration error, so I do not think we should extend the default
timeout. Also, we should not introduce a 'first class' configuration
option about that. But, making it configurable may be useful for cases
such that "an extremely highly utilized system (lots of OOM kills,
very high CPU utilization, etc)".
Closes#25441.
The tool initially just measured the boot phase, but was subsequently
extended to measure file system and machine IDs, too. At AllSystemsGo
there were request to add more, and make the tool generically
accessible.
Hence, let's rename the binary (but not the pcrphase services), to make
clear the tool is not just measureing the boot phase, but a lot of other
things too.
The tool is located in /usr/lib/ and still relatively new, hence let's
just rename the binary and be done with it, while keeping the unit names
stable.
While we are at it, also move the tool out of src/boot/ and into its own
src/pcrextend/ dir, since it's not really doing boot related stuff
anymore.
