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Even with Storage=journal we would still attempt to open the final
dmesg.txt file which causes a lot of noise in the journal:
```
[ 5.764111] H testsuite-82.sh[658]: + systemctl start systemd-pstore
[ 5.806385] H systemd[1]: Starting modprobe@efi_pstore.service...
[ 5.808656] H systemd[1]: modprobe@efi_pstore.service: Deactivated successfully.
[ 5.808971] H systemd[1]: Finished modprobe@efi_pstore.service.
[ 5.818845] H kernel: audit: type=1130 audit(1682630623.637:114): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=modprobe@efi_pstore comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? termin>
[ 5.818865] H kernel: audit: type=1131 audit(1682630623.637:115): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=modprobe@efi_pstore comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? termin>
[ 5.816052] H systemd[1]: Starting systemd-pstore.service...
[ 5.840703] H systemd-pstore[806]: PStore dmesg-efi-168263062313014.
[ 5.841239] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.841428] H systemd-pstore[806]: PStore dmesg-efi-168263062312014.
[ 5.841575] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.841712] H systemd-pstore[806]: PStore dmesg-efi-168263062311014.
[ 5.841839] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.841989] H systemd-pstore[806]: PStore dmesg-efi-168263062310014.
[ 5.842141] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.842274] H systemd-pstore[806]: PStore dmesg-efi-168263062309014.
[ 5.842423] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.842589] H systemd-pstore[806]: PStore dmesg-efi-168263062308014.
[ 5.842722] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.842865] H systemd-pstore[806]: PStore dmesg-efi-168263062307014.
[ 5.843003] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.843153] H systemd-pstore[806]: PStore dmesg-efi-168263062306014.
[ 5.843280] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.843434] H systemd-pstore[806]: PStore dmesg-efi-168263062305014.
[ 5.843570] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.843702] H systemd-pstore[806]: PStore dmesg-efi-168263062304014.
[ 5.843831] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.843958] H systemd-pstore[806]: PStore dmesg-efi-168263062303014.
[ 5.844093] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.844250] H systemd-pstore[806]: PStore dmesg-efi-168263062302014.
[ 5.844412] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.844619] H systemd-pstore[806]: PStore dmesg-efi-168263062301014.
[ 5.844781] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.844956] H systemd-pstore[806]: PStore dmesg-efi-168263062300014.
[ 5.845168] H systemd-pstore[806]: Failed to open file /var/lib/systemd/pstore/1682630623/014/dmesg.txt: Operation not permitted
[ 5.851101] H systemd[1]: Finished systemd-pstore.service.
```
The commit b640e274a7 introduced reflink()
and reflink_full(). We usually name function xyz_full() for fully
parameterized version of xyz(), and xyz() is typically a inline alias of
xyz_full(). But in this case, reflink() and reflink_full() call
different ioctl().
Moreover, reflink_full() does partial reflink, while reflink() does full
file reflink. That's super confusing.
Let's rename reflink_full() to reflink_range(), the new name is
consistent with ioctl name, and should be fine.
Autostart files which contain the line gnome-autostart-phase are currently
completely skipped by systemd. This is because these are handled internally by
gnome startup through other means.
The problem is a number of desktop files that need to run on KDE too have this
flag set. Ideally they should just create systemd user units, but we're not at
this point universally yet.
This patch changes the logic so if the flag is set, we set NotShowIn-gnome,
which in turn would just not load decided at runtime.
As an optimisation if we would get conflicting OnlyShowIn lines we still
skip the file completely.
Example:
$ rg 'Exec|Autostart-Phase' /etc/xdg/autostart/gnome-keyring-pkcs11.desktop
Exec=/usr/bin/gnome-keyring-daemon --start --components=pkcs11
X-GNOME-Autostart-Phase=PreDisplayServer
$ cat '/tmp/xxx/app-gnome\x2dkeyring\x2dpkcs11@autostart.service'
# Automatically generated by systemd-xdg-autostart-generator
[Unit]
SourcePath=/etc/xdg/autostart/gnome-keyring-pkcs11.desktop
...
[Service]
...
ExecCondition=/usr/lib/systemd/systemd-xdg-autostart-condition "Unity:MATE" "GNOME"
Co-authored-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
The kernel has had filesystem independent reflink ioctls for a
while now, let's try to use them and fall back to the btrfs specific
ones if they're not supported.
This adds support for systematically destroying connections in
pam_sm_session_open() even on failure, so that under no circumstances
unserved dbus connection are around while the invoking process waits for
the session to end. Previously we'd only do this on success, now do it
in all cases.
This matters since so far we suggested people hook pam_systemd into
their pam stacks prefixed with "-", so that login proceeds even if
pam_systemd fails. This however means that in an error case our
cached connection doesn't get disconnected even if the session then is
invoked. This fixes that.
Let's systematically avoid sharing cached busses between processes (i.e.
from parent and child after fork()), by including the PID in the field
name.
With that we're never tempted to use a bus object the parent created in
the child.
(Note this is about *use*, not about *destruction*. Destruction needs to
be checked by other means.)
Let's make use of the new DelegateSubgroup= feature and delegate the
/supervisor/ subcgroup already to nspawn, so that moving the supervisor
process there is unnecessary.
This one is basically for free, since the service manager is already
prepared for being invoked in init.scope. Hence let's start it in the
right cgroup right-away.
If we create a subcroup (regardless if the '.control' subgroup we
always created or one configured via DelegateSubgroup=) it's inside of
the delegated territory of the cgroup tree, hence it should be owned
fully by the unit's users. Hence do so.
We don't need to apply the journal/oomd xattrs to the subcgroups we add,
since those daemons already look for the xattrs up the tree anyway.
Hence remove this.
This is in particular relevant as it means later changes to the xattr
don#t need to be replicated on the subcgroup either.
This implements a minimal subset of #24961, but in a lot more
restrictive way: we only allow one level of subcgroup (as that's enough
to address the no-processes in inner cgroups rule), and does not change
anything about threaded cgroup logic or similar, or make any of this new
behaviour mandatory.
All this does is this: all non-control processes we invoke for a unit
we'll invoke in a subgroup by the specified name.
We'll later port all our current services that use cgroup delegation
over to this, i.e. user@.service, systemd-nspawn@.service and
systemd-udevd.service.
Let's clean up validation/escaping of cgroup names. i.e. split out code
that tests if name needs escaping. Return proper error codes, and extend
test a bit.
