pam_systemd is used to create logind sessions and to apply extended
attributes from json user records. Not every application that creates a
pam session expects a login scope, but may be interested in the extended
attributes of json user records. Session class "none" implements this
service by disabling logind for this session altogether.
---
Closes: #34988
When running the integration tests downstream, it's useful to be
able to test that a new systemd version doesn't introduce any AVC
denials, so let's add a knob to make that possible.
Even though udevadm accepts relative syspath, previously, udevadm
could not use relative path to device node:
===
$ cd /dev
$ udevadm info sda
Bad argument "sda", expected an absolute path in /dev/ or /sys/ or a unit name: Invalid argument
$ udevadm info /usr/../dev/sda
Unknown device "/usr/../dev/sda": No such device
===
With this change, both the above cases work fine.
Note, still sd_device_new_from_devname() requires absolute path starts
with /dev/, for safety.
We enforce quite strict rules on naming userns we assign uid ranges to
for users. So strict that they are hard to get right for clients. hence,
let's optionally mangle provided strings so that they work for us.
This should make it much easier to work with the API, as something
reasonable happens regarldess what kind of garbage a client sets as
name.
mangling the name is opt-in for clients, so that there's tight control
for the client on the name, but also "fire and forget".
This is a test for the previous commits: we create an unpriv, delegated cgroup in
--user mode, then create a subcgroup that is owned by some other user
(to mimic the case where an unpriv user got a userns with delegated UIDs
assigned), and then try to stop the unit. traditionally this would fail,
because our unpriv systemd --user instance can't remove the subcrroup
owned by someone else. With the earlier patches this is addressed.
New version of mdadm now asks a second question, so send 'y' twice
to it in the test scripts
[ 5.253483] TEST-64-UDEV-STORAGE.sh[684]: + echo y
[ 5.254412] TEST-64-UDEV-STORAGE.sh[685]: + mdadm --create /dev/md/mdmirror --name mdmirror --uuid aaaaaaaa:bbbbbbbb:cccccccc:00000001 /dev/disk/by-id/scsi-0systemd_foobar_deadbeefmdadm0 /dev/disk/by-id/scsi-0systemd_foobar_deadbeefmdadm1 -v -f --level=1 --raid-devices=2
[ 5.254759] TEST-64-UDEV-STORAGE.sh[685]: To optimalize recovery speed, it is recommended to enable write-indent bitmap, do you want to enable it now? [y/N]? mdadm: Note: this array has metadata at the start and
[ 5.255085] TEST-64-UDEV-STORAGE.sh[685]: may not be suitable as a boot device. If you plan to
[ 5.255418] TEST-64-UDEV-STORAGE.sh[685]: store '/boot' on this device please ensure that
[ 5.255745] TEST-64-UDEV-STORAGE.sh[685]: your boot-loader understands md/v1.x metadata, or use
[ 5.256285] TEST-64-UDEV-STORAGE.sh[685]: --metadata=0.90
[ 5.256672] TEST-64-UDEV-STORAGE.sh[685]: mdadm: size set to 64512K
[ 5.257063] TEST-64-UDEV-STORAGE.sh[685]: Continue creating array [y/N]? mdadm: create aborted.
This is backward compatible with the older version that asks just one
question
We nowadays support unprivileged invocation of systemd-nspawn +
systemd-vmspawn, but there was no support for discovering suitable disk
images (i.e. no per-user counterpart of /var/lib/machines). Add this
now, and hook it up everywhere.
Instead of hardcoding machined's, importd's, portabled's, sysupdated's
image discovery to RUNTIME_SCOPE_SYSTEM I introduced a field that make
the scope variable, even if this field is always initialized to
RUNTIME_SCOPE_SYSTEM for now. I think these four services should
eventually be updated to support a per-user concept too, this is
preparation for that, even though it doesn't outright add support for
this.
This is for the largest part not user visible, except for in nspawn,
vmspawn and the dissect tool. For the latter I added a pair of
--user/--system switches to select the discovery scope.
Introduce the `systemd.break=` kernel command line option to allow stopping the
boot process at a certain point and spawn a debug shell. After exiting this
shell, the system will resume booting.
It accepts the following values:
- `pre-udev`: before starting to process kernel uevents (initrd and host).
- `pre-basic`: before leaving early boot and regular services start (initrd and
host).
- `pre-mount`: before the root filesystem is mounted (initrd).
- `pre-switch-root`: before switching root (initrd).
Follow-up for d0a63cf041.
The command ncat may be already dead when the service manager receives
the notify message. Hence, the service cannot be found by the sender PID,
and the notify message will be ignored.
```
Dec 17 03:26:49 systemd[1]: Cannot find unit for notify message of PID 1159, ignoring.
Dec 17 03:26:49 systemd[1]: Received SIGCHLD from PID 1152 (bash).
Dec 17 03:26:49 systemd[1]: Child 1152 (bash) died (code=exited, status=0/SUCCESS)
Dec 17 03:26:49 systemd[1]: run-p1151-i1451.service: Child 1152 belongs to run-p1151-i1451.service.
Dec 17 03:26:49 systemd[1]: run-p1151-i1451.service: Main process exited, code=exited, status=0/SUCCESS (success)
Dec 17 03:26:49 systemd[1]: run-p1151-i1451.service: Failed with result 'protocol'.
Dec 17 03:26:49 systemd[1]: run-p1151-i1451.service: Service will not restart (restart setting)
Dec 17 03:26:49 systemd[1]: run-p1151-i1451.service: Changed start -> failed
```
This also drops unnecessary --pipe option and redundant check by 'env' command.
For some reasons, another session logind-test-user may be started.
===
Dec 13 07:04:16 systemd-logind[2140]: Got message type=method_call ... member=CreateSessionWithPIDFD ...
(snip)
Dec 13 07:04:16 systemd-logind[2140]: New session 15 of user logind-test-user.
Dec 13 07:04:16 systemd-logind[2140]: VT changed to 2
Dec 13 07:04:16 systemd-logind[2140]: rfkill: Found udev node /dev/rfkill for seat seat0
Dec 13 07:04:16 systemd-logind[2140]: udmabuf: Found udev node /dev/udmabuf for seat seat0
Dec 13 07:04:16 systemd-logind[2140]: Found static node /dev/snd/timer for seat seat0
Dec 13 07:04:16 systemd-logind[2140]: Found static node /dev/snd/seq for seat seat0
Dec 13 07:04:16 systemd-logind[2140]: Changing ACLs at /dev/snd/timer for seat seat0 (uid 0→4712 add)
Dec 13 07:04:16 systemd-logind[2140]: Changing ACLs at /dev/rfkill for seat seat0 (uid 0→4712 add)
Dec 13 07:04:16 systemd-logind[2140]: Changing ACLs at /dev/udmabuf for seat seat0 (uid 0→4712 add)
Dec 13 07:04:16 systemd-logind[2140]: Changing ACLs at /dev/snd/seq for seat seat0 (uid 0→4712 add)
Dec 13 07:04:16 systemd[1]: user-4712.slice: Changed dead -> active
Dec 13 07:04:16 systemd[1]: user-4712.slice: Job 5951 user-4712.slice/start finished, result=done
Dec 13 07:04:16 systemd[1]: Created slice user-4712.slice.
Dec 13 07:04:16 systemd-logind[2140]: Electing new display for user logind-test-user
Dec 13 07:04:16 systemd-logind[2140]: Choosing session 15 in preference to -
(snip)
Dec 13 07:04:16 systemd-logind[2140]: Got message type=method_call ... member=CreateSessionWithPIDFD ...
(snip)
Dec 13 07:04:16 systemd-logind[2140]: New session 16 of user logind-test-user.
Dec 13 07:04:16 systemd-logind[2140]: Electing new display for user logind-test-user
Dec 13 07:04:16 systemd-logind[2140]: Ignoring session 16
===
Let's track only session for the user with tty, which we explicitly created.
Fixes#35597.
Copy what systemd-notify does by default by setting it to the PID of the shell,
so that main process tracking works as expected. Also use test -S instead of ls
to check socket.
[ 33.980396] (sh)[1024]: run-p1022-i1322.service: Executing: sh -c "echo READY=1 | ncat --unixsock --udp \$NOTIFY_SOCKET --source /run/notify && env"
[ 34.138778] systemd[1]: run-p1022-i1322.service: Child 1024 belongs to run-p1022-i1322.service.
[ 34.138825] systemd[1]: run-p1022-i1322.service: Main process exited, code=exited, status=0/SUCCESS (success)
[ 34.139451] systemd[1]: run-p1022-i1322.service: Failed with result 'protocol'.
[ 34.139559] systemd[1]: run-p1022-i1322.service: Service will not restart (restart setting)
[ 34.139573] systemd[1]: run-p1022-i1322.service: Changed start -> failed
[ 34.139945] systemd[1]: run-p1022-i1322.service: Job 1364 run-p1022-i1322.service/start finished, result=failed
Fixes#35619
Follow-up for 18bb30c3b2
To be able to run systemd in a Type=notify transient unit, the notify
socket can't be bind mounted to /run/systemd/notify as systemd in the
transient unit wants to use that as its own notify socket which
conflicts with systemd on the host.
Instead, for sandboxed units, let's bind mount the notify socket to
/run/host/notify as documented in the container interface. Since we
don't guarantee a stable location for the notify socket and insist users
use $NOTIFY_SOCKET to get its path, this is safe to do.
Lennart Poettering
Daan De Meyer
Ivan Kruglov
Yu Watanabe
Luca Boccassi
Ronan Pigott
Mike Yuan
Antonio Alvarez Feijoo
Nick Rosbrook
Luca Boccassi