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Before a339495b1d, update-utmp typically
connects the public DBus socket when disconnected from the private DBus
socket, as dbus service should be active even during PID1 is being reexecuted.
However, after a339495b1d, update-utmp
tries to connect only the private DBus socket, but reexecution of PID1
may be slow, hence all trials may fail when the reexecution is slow.
With this change, now it waits for 100ms to 2000ms, so in total it waits
about 37 seconds in average, previously about 4 seconds.
This applies the existing SocketUser=/SocketGroup= options to units
defining a POSIX message queue, bringing them in line with UNIX
sockets and FIFOs. They are set on the file descriptor rather than
a file system path because the /dev/mqueue path interface is an
optional mount unit.
This commit adds two settings private and strict to
the ProtectControlGroups= property. Private will unshare the cgroup
namespace and mount a read-write private cgroup2 filesystem at /sys/fs/cgroup.
Strict does the same except the mount is read-only. Since the unit is
running in a cgroup namespace, the new root of /sys/fs/cgroup is the unit's
own cgroup.
We also add a new dbus property ProtectControlGroupsEx which accepts strings
instead of boolean. This will allow users to use private/strict via dbus
and systemd-run in addition to service files.
Note private and strict fall back to no and yes respectively if the kernel
doesn't support cgroup2 or system is not using unified hierarchy.
Fixes: #34634
This commit refactors ProtectControlGroups= from using a boolean
in the dbus/execute backend to using an enum. There is no functional
change but this will allow adding new non-boolean values (e.g. strict,
private) a la PrivateHome.
We often used a pattern like if (!FLAGS_SET(flags, SD_JSON_FORMAT_OFF)),
which is rather verbose and also contains a double negative, which we try
to avoid. Add a little helper to avoid an explicit bit check.
This change clarifies an aditional thing: in some cases we treated
SD_JSON_FORMAT_OFF as a flag (flags & SD_JSON_FORMAT_OFF), while in other cases
we treated it as an independent enum value (flags == SD_JSON_FORMAT_OFF).
In the first form, flags like SD_JSON_FORMAT_SSE do _not_ turn the json
output on, while in the second form they do. Let's use the first form
everywhere.
No functional change intended.
Initially I wasn't sure if this helper should be made public or just internal,
but it seems such a common pattern that if we expose the flags, we might just
as well expose it too, to make life easier for any consumers.
We would need to use pure if the funtion was getting pointers and
dereferencing them. But sd128_t is a structure and those functions
only access the parameters of the call.
The default definition to add is `-D__loongarch64__`, which is not searched in [bpf_tracing.h](09b9e83102/src/bpf_tracing.h (L68))
This may avoid `error: Must specify a BPF target arch via __TARGET_ARCH_xxx` in loongarch64
Signed-off-by: Zhou Qiankang <wszqkzqk@qq.com>
A colleague reported when RootDirectory= does not exist, systemd reports an error like:
```
Failed to set up mount namespacing: No such file or directory
```
Unfortunately, with large spec files, it can be hard to diagnose which path systemd is talking
about. Thus, to make the error message more helpful and similar to mount error messages, we add
the root directory/image path into the error message like:
```
Failed to set up mount namespacing: /tmp/thisdoesnotexist: No such file or directory
```
No functional change, but let's print yes/no rather than on/off in systemd-analyze.
Similar to 2e8a581b9c and
edd3f4d9b7.
(Note, the commit messages of those commits are wrong, as
parse_boolean() supports on/off anyway.)
We must be prepared that systemd temporarily drops off the bus or
disconnects our direct connections (due to systemctl daemon-reexec or
so). Hence automatically reconnect when we watch the unit status, and
handle this case gracefully.
Fixes: #32906#27204
Let's not confuse users with the login shell indicator and drop it from
the description. This means a run0 session will now usually show up with
a description of "[run0] /bin/bash" rather than "[run0] -/bin/bash".
I think we should try to communicate clearly if something is a run0
session, or a systemd-run invocation. Hence, let's initialize the
description so that the command is prefixed by
program_invocation_short_name.
Effectively this means that our run0 sessions now appear as services
with a description of "[run0] -/bin/bash"
The current logic is a bit complex how systemd-run units are called. It
used to be just the unique ID of the dbus connection. Which was nice,
since its system-widely, uniquely assigned to us. But this didn't work
out well, due to direct connections to PID 1 and due to soft reboots.
We nowadays have a better ID to use though, with nicer properties: the
kernel manages a pidfd ID for every process after all, and it's globally
unique, for any process, and regardless of soft reboots. Hence use that
for naming preferably, and just keep one branch with a randomized name
as fallback.
This makes use of the infra introduced in 229d4a9806 to indicate visually on each prompt that we are in superuser mode temporarily.
pick ad5de3222f userdbctl: add some basic client-side filtering
When PAMName= is set this should be enough to go through our entire user
changing story, so that PAM is definitely run, and environment variables
definitely pulled in and so on.
Previously, it would happen that under some circumstances we might no do
this when transitioning from root to root itself even though PAM was
enabled.
Fixes: #34682
