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These are required by the bpf_tracing.h header in libbpf, see
https://github.com/libbpf/libbpf/blob/master/src/bpf_tracing.h.
bpf_tracing.h does have a few fallbacks in case __TARGET_ARCH_XXX
is not defined but recommends using the __TARGET_ARCH macros instead
so let's do that.
nscd is known to be racy [1] and it was already deprecated and later dropped in
Fedora a while back [1,2]. We don't need to support obsolete stuff in systemd,
and the cache in systemd-resolved provides a better solution anyway.
We announced the plan to drop nscd in d44934f378.
[1] https://fedoraproject.org/wiki/Changes/DeprecateNSCD
[2] https://fedoraproject.org/wiki/Changes/RemoveNSCD
The option is kept as a stub without any effect to make the transition easier.
In mkosi.images/system/mkosi.conf, we configure the certificate as
an extra tree so it's available inside the image. However, we pick up
the certificate from the top level repository directory and not from the
build directory where it is generated by the genkey meson target.
We currently have no way to access the build directory that mkosi was
invoked from when parsing the configuration file. Thus we have no way to
specify the correct location to the certificate when it's located in the
build directory.
For now, let's look for the key and certificate in the top level repository
root directory and drop the genkey target.
We don't have to change the Github Actions CI because it already runs genkey
manually before the image build (which is something we forgot to remove when
introducing the genkey target and is the reason this didn't cause issues before).
The kernel's sched_setattr interface allows for more control over a processes
scheduling attributes as the previously used sched_setscheduler interface.
Using sched_setattr is also the prerequisite for support of utilization
clamping (UCLAMP [1], see #26705) and allows to set sched_runtime. The latter,
sched_runtime, will probably become a relevant scheduling parameter of the
EEVDF scheduler [2, 3], and therefore will not only apply to processes
scheduled via SCHED_DEADLINE, but also for processes scheduled via
SCHED_OTHER/SCHED_BATCH (i.e., most processes).
1: https://docs.kernel.org/next/scheduler/sched-util-clamp.html
2: https://lwn.net/Articles/969062/
3: https://lwn.net/ml/linux-kernel/20240405110010.934104715@infradead.org/
During cross-compilation of systemd, the compiler used to build the bpf's needs
to be pointed at the correct include searchpath. Which can be done by passing
the corresponding directory in through the cflags; for example in yocto/bitbake
this would work: CFLAGS += "--sysroot=${STAGING_DIR_TARGET}"
Signed-off-by: Johannes Schneider <johannes.schneider@leica-geosystems.com>
This is preparation for making our Varlink API a public API. Since our
Varlink API is built on top of our JSON API we need to make that public
first (it's a nice API, but JSON APIs there are already enough, this is
purely about the Varlink angle).
I made most of the json.h APIs public, and just placed them in
sd-json.h. Sometimes I wasn't so sure however, since the underlying data
structures would have to be made public too. If in doubt I didn#t risk
it, and moved the relevant API to src/libsystemd/sd-json/json-util.h
instead (without any sd_* symbol prefixes).
This is mostly a giant search/replace patch.
On distros like SUSE where ssh config dropins in /usr are supported, there's no
need for a symlink in /etc/ssh/ssh_config.d/ that points to the dropin
installed somewhere in /usr (that is not reachable by ssh).
We want to avoid reinitialization of our global variables with static
storage duration in case we get dlopened multiple times by the same
application. This will avoid potential resource leaks that could have
happened otherwise (e.g. leaking journal socket fd).
Use 'recommended' priority for the default compression library, to
indicate that it should be prioritized over the other ones, as it
will be used to compress journals/core files.
Also use 'recommended' for kmod, as systems will likely fail to boot
if it's missing from the initrd.
Use 'suggested' for everything else.
There is one dlopen'ed TPM library that has the name generated
at runtime (depending on the driver), so that cannot be added, as it
needs to be known at build time.
Also when we support multiple ABI versions list them all, as for the
same reason we cannot know which one will be used at build time.
$ dlopen-notes.py build/libsystemd.so.0.39.0 build/src/shared/libsystemd-shared-256.so
libarchive.so.13 suggested
libbpf.so.0 suggested
libbpf.so.1 suggested
libcryptsetup.so.12 suggested
libdw.so.1 suggested
libelf.so.1 suggested
libfido2.so.1 suggested
libgcrypt.so.20 suggested
libidn2.so.0 suggested
libip4tc.so.2 suggested
libkmod.so.2 recommended
liblz4.so.1 suggested
liblzma.so.5 suggested
libp11-kit.so.0 suggested
libpcre2-8.so.0 suggested
libpwquality.so.1 suggested
libqrencode.so.3 suggested
libqrencode.so.4 suggested
libtss2-esys.so.0 suggested
libtss2-mu.so.0 suggested
libtss2-rc.so.0 suggested
libzstd.so.1 recommended
Co-authored-by: Luca Boccassi <bluca@debian.org>
If we set it to '0' if integration tests are not enabled then we can't
enable them from the command line since environment from meson takes
priority over environment variables from the command line.
We also rename the related variables to avoid conflicts with the
existing integration_tests variable.
The kernel headers match on __s390__ so the build fails
../src/nsresourced/bpf/userns_restrict/userns-restrict.bpf.c:159:6: error: Must specify a BPF target arch via __TARGET_ARCH_xxx
void BPF_KPROBE(userns_restrict_free_user_ns, struct work_struct *work) {
^
/usr/include/bpf/bpf_tracing.h:817:20: note: expanded from macro 'BPF_KPROBE'
return ____##name(___bpf_kprobe_args(args)); \
^
/usr/include/bpf/bpf_tracing.h:797:41: note: expanded from macro '___bpf_kprobe_args'
^
/usr/include/bpf/bpf_helpers.h:195:29: note: expanded from macro '___bpf_apply'
^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
/usr/include/bpf/bpf_tracing.h:789:72: note: expanded from macro '___bpf_kprobe_args1'
^
/usr/include/bpf/bpf_tracing.h:563:29: note: expanded from macro 'PT_REGS_PARM1'
^
<scratch space>:125:6: note: expanded from here
GCC error "Must specify a BPF target arch via __TARGET_ARCH_xxx"
Let's insist on mkosi being found if the integration-tests option
is enabled and let's only add dependencies on systemd-journal-remote
and systemd-measure if they're being built. Drop ukify from the list
as its part of public_programs.
- Stop using logging module since the default output formatting is
pretty bad. Prefer print() for now.
- Log less, logging the full mkosi command line is rather verbose,
especially when it contains multi-line dropins.
- Streamline the journalctl command we output for debugging failed
tests.
- Don't force usage of the disk image format.
- Don't force running without unit tests.
- Don't force disabling RuntimeBuildSources.
- Update documentation to streamline the command for running a single
test and remove sudo as it's not required anymore.
- Improve the console output by having the test unit's output logged
to both the journal and the console.
- Disable journal console log forwarding as we have journal forwarding
as a better alternative.
- Delete existing journal file before running test.
- Delete journal files of succeeded tests to reduce disk usage.
- Rename system_mkosi target to just mkosi
- Pass in mkosi source directory explicitly to accomodate arbitrary
build directory locations.
- Add test interactive debugging if stdout is connected to a tty
- Stop explicitly using the 'system' image since it'll likely be
dropped soon.
- Only forward journal if we're not running in debugging mode.
- Stop using testsuite.target and instead just add the necessary
extras to the main testsuite unit via the credential dropin.
- Override type to idle so test output is not interleaved with
status output.
- Don't build mkosi target by default
- Always add the mkosi target if mkosi is found
- Remove dependency of the integration tests on the mkosi target
as otherwise the image is always built, even though we configure
it to not be built by default.
- Move mkosi output, cache and build directory into build/ so that
invocations from meson and regular invocations share the same
directories.
- Various aesthetic cleanups.
This adds a small, socket-activated Varlink daemon that can delegate UID
ranges for user namespaces to clients asking for it.
The primary call is AllocateUserRange() where the user passes in an
uninitialized userns fd, which is then set up.
There are other calls that allow assigning a mount fd to a userns
allocated that way, to set up permissions for a cgroup subtree, and to
allocate a veth for such a user namespace.
Since the UID assignments are supposed to be transitive, i.e. not
permanent, care is taken to ensure that users cannot create inodes owned
by these UIDs, so that persistancy cannot be acquired. This is
implemented via a BPF-LSM module that ensures that any member of a
userns allocated that way cannot create files unless the mount it
operates on is owned by the userns itself, or is explicitly
allowelisted.
BPF LSM program with contributions from Alexei Starovoitov.
There are bugs in the kernel verifier that cause legitimate code
to be rejected, disabling this optimization makes bpf programs
built with a new enough gcc work again.
Fixes https://github.com/systemd/systemd/issues/31888
To make it easy to have a workable ssh-generator on various distros,
let's optionally generate the ssh privsep dir via tmpfiles.d/ drop-in.
This enables the concept with a path of /run/sshd/ as default. This is
the path Debian/Ubuntu uses, and means that we just work on those
distros. Debian/Ubuntu is the only distro (apparently?) that puts the
privsep dir under /run/, hence always needs the dir to be created
manually. Other distros don't need it that much, because they place the
dir in /usr/ (fedora, best choice!) or /var/ (others, not ideal, because
still mutable).
Also adds a longer explanation about this in NEWS, in the hope that
distro maintaines read that and maybe start cleaning this up.
Alternative to: #31543
gcrypt is used only for journal sealing operations in libsystemd, so it
can be made into a dlopen dependency that is used only on demand. This
allows to reduce the footprint of libsystemd in the most common cases.
Keep systemd-pull and systemd-resolved with normal linking, as they are
executables, and usually built with OpenSSL support anyway.
The -mkernel option was dropped in
da445a5858
We also need to ensure that the include paths are properly set for the
linux kernel headers.
Fixes: #31869
This commit makes homework always upload the LUKS volume key into the
kernel keyring. This is different from previous behavior in three
notable ways:
- Previously, we'd only upload if auto-resize was on. In preparation for
upcoming changes, now we always upload
- Previously, we'd upload the user's actual password (or a password
obtained from a FIDO key or similar). Now, we upload the LUKS volume key
itself, to remove a layer of unnecessary indirection.
- Previously, Lock() wouldn't remove the key from the kernel keyring.
This, of course, defeats the purpose of Lock(), so now it removes the
key
This commit also allows the LUKS volume to be unlocked using the volume
key we obtained from the keyring.
IOPRIO_* is defined in linux/ioprio.h, so we were always using our fallback
definitions.
The header list in meson.build is sorted. I'm not sure why it wasn't.
The branch with configure_file() was broken: meson doesn't know that
this file is a prerequisite for other targets, so partial rebuilds were broken.
Easy reproducer:
git mv .git{,.no}
touch meson build && ninja -C build src/basic/libbasic.a
rm build/version.h
ninja -C build src/basic/libbasic.a
Using vcs_tag() also in that case makes meson always build the file.
(Combined with the issue fixed in previous commit, I was encountering
failed builds quite often.)
Fixes 3f6ce3d4f0.
With git-worktree, .git is just a file that specifies where
the parent git directory is. All the git information is available
in a git worktree, so it should be treated the same as a checkout
with a .git directory.
version_h includes GIT_VERSION which only makes sense for C files
which aren't preprocessed by jinja2 so remove the argument.
The end result of this change is that the man pages are not recompiled
anymore every time GIT_VERSION changes.
Dynamically load liblz4, libzstd and liblzma with dlopen().
This helps to reduce the size of the initrd image when these libraries
are not really needed.
This makes it easier for people packaging kernel-install plugins
to get the path right.
E.g. https://src.fedoraproject.org/rpms/python-virt-firmware/pull-request/3
fixes an issue where %{_libdir}/kernel/install.d was used,
which gives incorrect results on 64-bit architectures.
%_kernel_install_dir will make this even easier.
