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Unfortunately this needs a new binary to do the mount because there's just
too many special steps to outsource this to systemd-mount:
- EPERM needs to be treated specially
- UserRuntimeDir= setting must be obeyed
- SELinux label must be adjusted
This allows user@.service to be started independently of logind.
So 'systemctl start user@nnn' will start the user manager for user nnn.
Logind will start it too when the user logs in, and will stop it (unless
lingering is enabled) when the user logs out.
Fixes#7339.
This removes the UserTasksMax= setting in logind.conf. Instead, the generic
TasksMax= setting on the slice should be used. Instead of a transient unit we
use a drop-in to tweak the default definition of a .slice. It's better to use
the normal unit mechanisms instead of creating units on the fly. This will also
make it easier to start user@.service independently of logind, or set
additional settings like MemoryMax= for user slices.
The setting in logind is removed, because otherwise we would have two sources
of "truth": the slice on disk and the logind config. Instead of trying to
coordinate those two sources of configuration (and maintainer overrides to
both), let's just convert to the new one fully.
Right now now automatic transition mechanism is provided. logind will emit a
hint when it encounters the setting, but otherwise it will be ignored.
Fixes#2556.
Those are quite similar to %i/%I, but refer to the last dash-separated
component of the name prefix.
The new functionality of dash-dropins could largely supersede the template
functionality, so it would be tempting to overload %i/%I. But that would
not be backwards compatible. So let's add the two new letters instead.
The description in the man page disagreed with the code. Let the code win,
since if anybody is using this, they are more likely to depend on actual
behaviour rather than the docs. (In Fedora workstation installation there's
only one use, and it doesn't make much sense either way: SyslogIdentifier=%N
in xfs_scrub@.service.)
Also adds dots at the end everywhere, because we have multiple sentences in
some explanations, so we need dots.
Ultimately we should replace the relevant wiki texts with documentation
maintained as part of our project tree. This is a start. It can't
replace the wiki documentation in full yet, but I think it's already
very useful.
We don't know what the container payload needs, hence default to a PATH
with both bin and sbin included, as well as / and /usr.
Follow-up for #8324Fixes: #8698
Newer terminals (in particular gnome-terminal) understand special escape
sequence for formatting clickable links. Let's support that to make our
tool output more clickable where that's appropriate.
For details see this:
https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
The one big issue is that 'less' currently doesn't grok this, and
doesn't ignore sequence like regular terminal implementations do if they
don't support it. Hence for now, let's disable URL output if a pager is
used. We should revisit that though as soon as less added support for it
and enough time passed for it to enter various distributions.
Double newlines (i.e. one empty lines) are great to structure code. But
let's avoid triple newlines (i.e. two empty lines), quadruple newlines,
quintuple newlines, …, that's just spurious whitespace.
It's an easy way to drop 121 lines of code, and keeps the coding style
of our sources a bit tigther.
As it appears meson's test cases nowadays (?) show useful logs for
failing tests anyway, hence there's no need to show them unconditionally
in full every time anymore. Let's hence simplify and drop this.
This makes `resolvectl` use the verb style command line, e.g.,
`resolvectl status` or `resolvectl tlsa tcp fedoraproject.org:443`.
For compatibility, if the invocation name is `systemd-resolve`,
then it accepts the old syntax, e.g. `systemd-resolve --status`.
First of all, it's frickin' ugly and wrong, as IPC sockets should be
placed in /run and definitely not under a guessable name under
world-writable /tmp. Secondly, it can't even work as we set
PrivateTmp=yes on the service.
Hence, let's clean up the example, and simply use a socket in /run
instead.
Fixes: #8419
To indicate that the there're no more entries, these wrappers return false but
did leave the passed pointed unmodified.
However EOF is not an error and is a very common case so initialize the output
argument to NULL even in this case so callers don't need to do that.
Fixes: #8721
We check the same condition at various places. Let's add a trivial,
common helper for this, and use it everywhere.
It's not going to make things much faster or much shorter, but I think a
lot more readable
Before this patch we'd resolve all symlinks of bind mounts and other
mount points to establish for a service in advance, and only then start
mounting them. This is problematic, if symlink chains jump around
between directories in a namespace tree, so that to resolve a specific
symlink chain we need to establish another mount already. A typical case
where this happens is if /etc/resolv.conf is a symlink to some file in
/run: in that case we'd normally resolve and mount /etc/resolv.conf
early on, but that's broken, as to do this properly we'd need to resolve
/etc/resolv.conf first, then figure out that /run needs to be mounted
before we can proceed, and thus reorder the order in which we apply
mounts dynamically.
With this change, whenever we are about to apply a mount, we'll do a
single step of the symlink normalization process, patch the mount entry
accordingly, and then sort the list of mounts to establish again, taking
the new path into account. This means that we can correctly deal with
the example above: we might start with wanting to mount /etc/resolv.conf
early, but after resolving it to the path in /run/ we'd push it to the
end of the list, ensuring that /run is mounted first.
(Note that this also fixes another bug: we were following symlinks on
the bind mount source relative to the root directory of the service,
rather than of the host. That's wrong though as we explicitly document
tha the source of bind mounts is always on the host.)
