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As the systemd-pstore process is quite short lived, it might sometimes
lack the necessary metadata to make matching against a unit or a syslog
tag work. Since we already use a cursor file to make the matching window
small as possible, let's just drop the unit match completely and hope
for the best.
Resolves: #27453
Otherwise,
1. X.path triggered X.service, and the service has waiting start job,
2. systemctl stop X.service
3. the waiting start job is cancelled to install new stop job,
4. path_trigger_notify() is called, and may reinstall new start job,
5. the stop job cannot be installed, and triggeres assertion.
So, instead, let's add a defer event source, then enqueue the new start
job after the stop (or any other type) job finished.
Fixes https://github.com/systemd/systemd/issues/24577#issuecomment-1522628906.
reload/reexec currently used a separate implementation of the /run/ disk
space check, different from the one used for switch-root, even though
the code is mostly the same. The one difference is that the former
checks are authoritative, the latter are just informational (that's
because refusing a reload/reexec is relatively benign, but refusing a
switch-root quite troublesome, since this code is entered when it's
already "too late" to turn turn back, i.e. when the preparatory
transaction to initiate the switch root are already fully executed.
Let's share some code, and unify codepaths.
(This is preparation for later addition of a "userspace reboot" concept)
No change in behaviour, just refactoring.
We hardcode the path the initrd uses to prepare the final mount point at
so many places, let's also imply it in "systemctl switch-root" if not
specified.
This adds the fallback both to systemctl and to PID 1 (this is because
both to — different – checks on the path).
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 b640e274a7c363a2b6394c9dce5671d9404d2e2a 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.
