I (incorrectly) assumed that --relinquish-var does everything --flush
does, including moving already existing stuff from /var/log/journal/ to
/run/log/journal/, but that's not the case. To actually do that we need
to shuffle things manually, so let's do just that.
This should make issues like #31334 easier to debug, since with this
patch we now have a coredump in the test journal as well:
~# make -C test/TEST-04-JOURNAL/ clean setup run TEST_MATCH_SUBTEST=bsod BUILD_DIR=$PWD/build TEST_NO_NSPAWN=1
...
[ 12.176089] testsuite-04.sh[712]: + echo 'Subtest /usr/lib/systemd/tests/testdata/units/testsuite-04.bsod.sh failed'
[ 12.176089] testsuite-04.sh[712]: Subtest /usr/lib/systemd/tests/testdata/units/testsuite-04.bsod.sh failed
[ 12.176089] testsuite-04.sh[712]: + return 1
[ 12.177347] systemd[1]: testsuite-04.service: Failed with result 'exit-code'.
[ 12.220580] systemd[1]: Failed to start testsuite-04.service.
Spawning getter /home/mrc0mmand/repos/@systemd/systemd/build/journalctl -o export -D /var/tmp/systemd-tests/systemd-test.Qtqmmr/root/var/log/journal...
Finishing after writing 7649 entries
TEST-04-JOURNAL: (failed; see logs)
-rw-r----- 1 root root 16777216 Feb 15 21:13 /var/tmp/systemd-tests/systemd-test.Qtqmmr/system.journal
...
~# coredumpctl --file /var/tmp/systemd-tests/systemd-test.Qtqmmr/system.journal
TIME PID UID GID SIG COREFILE EXE SIZE
Thu 2024-02-15 21:13:38 CET 812 0 0 SIGABRT journal /usr/lib/systemd/systemd-bsod -
This commit adds a new way of forwarding journal messages - forwarding
over a socket.
The socket can be any of AF_INET, AF_INET6, AF_UNIUX or AF_VSOCK.
The address to connect to is retrieved from the "journald.forward_address" credential.
It can also be specified in systemd-journald's unit file with ForwardAddress=
owneridmap bind option will map the target directory owner from inside the
container to the owner of the directory bound from the host filesystem.
This will ensure files and directories created in the container will be owned
by the directory owner of the host filesystem. All other users will remain
unmapped. Files to be written as other users in the container will not be
allowed.
Resolves: #27037
For the other verbs turning off JSON mode makes sense, but for "call"
not so much, after all the contents of a method call reply is JSON we
couldn't really show any other way.
Hence, when JSON output was not configured otherwise in "call", default
to the same as -j.
I think this was just overlooked in #13754, which removed
the restriction of Restart= on Type=oneshot services.
There's no reason to prevent RestartForceExitStatus=
now that Restart= has been allowed.
Closes#31148
When we're running with sanitizers, sd-executor might pull in a
significant chunk of shared libraries on startup, that can cause a lot
of memory pressure and put us in the front when sd-oomd decides to go on
a killing spree. This is exacerbated further on Arch Linux when built
with gcc, as Arch ships unstripped gcc-libs so sd-executor pulls in over
30M of additional shared libs on startup:
~# lddtree build-san/systemd-executor
build-san/systemd-executor (interpreter => /lib64/ld-linux-x86-64.so.2)
libasan.so.8 => /usr/lib/libasan.so.8
libstdc++.so.6 => /usr/lib/libstdc++.so.6
libm.so.6 => /usr/lib/libm.so.6
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1
libsystemd-core-255.so => /root/systemd/build-san/src/core/libsystemd-core-255.so
libaudit.so.1 => /usr/lib/libaudit.so.1
libcap-ng.so.0 => /usr/lib/libcap-ng.so.0
...
libseccomp.so.2 => /usr/lib/libseccomp.so.2
libubsan.so.1 => /usr/lib/libubsan.so.1
libc.so.6 => /usr/lib/libc.so.6
~# ls -Llh /usr/lib/libasan.so.8 /usr/lib/libstdc++.so.6 /usr/lib/libubsan.so.1
-rwxr-xr-x 1 root root 9.7M Feb 2 10:36 /usr/lib/libasan.so.8
-rwxr-xr-x 1 root root 21M Feb 2 10:36 /usr/lib/libstdc++.so.6
-rwxr-xr-x 1 root root 3.2M Feb 2 10:36 /usr/lib/libubsan.so.1
Sanitized libsystemd-core.so is also quite big:
~# ls -Llh /root/systemd/build-san/src/core/libsystemd-core-255.so /usr/lib/systemd/libsystemd-core-255.so
-rwxr-xr-x 1 root root 26M Feb 8 19:04 /root/systemd/build-san/src/core/libsystemd-core-255.so
-rwxr-xr-x 1 root root 5.9M Feb 7 12:03 /usr/lib/systemd/libsystemd-core-255.so
... i.e. apply nested config (exclusions and such) when executing R and D.
This fixes a long-standing RFE. The existing logic seems to have been an
accident of implementation. After all, if somebody specifies a config with
'R /foo; x /tmp/bar', then probably the goal is to remove stuff from under /foo,
but keep /tmp/bar. If they just wanted to nuke everything, then would not specify
the second item.
This also makes R and D use O_NOATIME, i.e. the access times of the directories
that are accessed will not be changed by the cleanup.
Obviously, we'll have to add this to NEWS and such.
Looking at the whole tmpfiles.d config in Fedora, this change has no effect.
The test cases are adjusted as appropriate. I also added another test case for
'R'/'D' with a file, just to test this code path more.
Replaces #20641.
Fixes#1633.
Let's allow configuring the debug tty independently of enabling/disabling
the debug shell. This allows mkosi to configure the correct tty while
leaving enabling/disabling the debug tty to the user.
This new mode copies resources provided by the client, so that they
remain available for inspect/detach even if the original images are
deleted, but symlinks the profile as that is owned by the OS, so that
updates are automatically applied.
fresh otherwise
Currently, exec_setup_credential() always rewrite all credentials
upon exec_invoke(), i.e. invocation of each ExecCommand, and within
a single tmpfs instance. This is problematic though:
* When writing each tmp cred file, we essentially double the size
of the credential. Therefore, if one cred is bigger than half
of CREDENTIALS_TOTAL_SIZE_MAX, confusing ENOSPC occurs (see also
https://github.com/systemd/systemd/pull/24734#issuecomment-1925440546)
* Credential is a unit-wide thing and thus should not change
during the whole lifetime of main process. However, if e.g.
a on-disk credential or SetCredential= in unit file
changes between ExecStart= and ExecStartPost=,
the credentials are overwritten when the latter gets to run,
and the already-running main process is suddenly seeing
completely different creds.
So, let's try to reuse final cred dir if the main process has started
and the tmpfs has been populated, so that the creds used is stable
across all ExecStart= and ExecStartPost=-s. We still want to retain
the ability of updating creds through ExecStartPre= though, therefore
we forcibly use a fresh cred dir for those. 'Fresh' means to actually
unmount the old tmpfs first, so the first problem goes away, too.
David Tardon
Frantisek Sumsal
Adrian Vovk
Luca Boccassi
Yu Watanabe
Vishal Chillara Srinivas
Lennart Poettering
Sam Leonard
Benjamin Franzke
Franck Bui
Zbigniew Jędrzejewski-Szmek
Mike Yuan
Daan De Meyer
Vladimir Stoiakin