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Previously, it was impossible to freeze or thaw a slice if it is an
ancestor to a unit that had no running cgroup (i.e. a service with
RemainAfterExit=yes). Instead of failing with EBUSY (which would
confusingly get reported as "Unit has pending job") we just silently
no-op.
I noticed this because we now have user-runtime-dir@.service, which
would make it impossible to freeze/thaw user.slice or user-<UID>.slice
Same reason as the reload, reexec is disruptive and it requires the
same privileges, so if somebody wants to limit reloads, they'll also
want to limit reexecs, so use the same setting.
Previously, 'udevadm test' performs not only processing udev rules,
but made several destructive change on the system; updating udev
database, device node permission, devlinks, network interface
properties, and so on.
Similary, 'udevadm test-builtin' may perform something destructive,
especially by 'keyboard', 'kmod', and 'net_setup_link' builtins.
Let's make these commands and test executables not change device
configurations.
When an option is delegated from an upstream server, its lifetime
may be limited by a time. Such functionality will be used later by
sd-radv.
This also remove 'offset' argument from the option setter
ndisc_option_set_xyz(), and make it update existing option.
See comments in ndisc_option_add_link_layer_address() for more details.
The function add_match_this_boot() calls sd_journal_add_conjunction(),
hence, we cannot specify multiple devices in the extra match arguments,
e.g., "journalctl /dev/sda /dev/sdb" shows no entry.
The setting is used when /sys/power/state is set to 'mem'
(common for suspend) or /sys/power/disk is set to 'suspend'
(hybrid-sleep). We default to kernel choice here, i.e.
respect what's set through 'mem_sleep_default=' kernel
cmdline option.
This fixes a race condition crash in homed that would happen in the
following sequence of events:
1. Client 1 takes a ref on the home area
2. Client 1 calls some method via dbus
3. Client 2 calls Release()
In homed, the Release() would check if a ref is still held (in this
case: yes it is) and returns an error. Except that is done through a
code-path that asserts that no operations are ongoing. In this case,
it's valid to have an ongoing operation, and so the assertion fails
causing homed to crash.
When sd-run connects to D-Bus rather than the private socket, it will
generate the transient unit name using the bus ID assigned by the D-Bus
broker/daemon. The issue is that this ID is only unique per D-Bus run,
if the broker/daemon restarts it starts again from 1, and it's a simple
incremental counter for each client.
So if a transient unit run-u6.service starts and fails, and it is not
collected (default on failure), and the system soft-reboots, any new
transient unit might conflict as the counter will restart:
Failed to start transient service unit: Unit run-u6.service was already loaded or has a fragment file.
Get the soft-reboot counter, and if it's greater than zero, append it
to the autogenerated unit name to avoid clashes.
I am not sure it is explicitly documented that /var/log/journal should
be a directory, rather than a symlink to a directory, but the current
code of journald seems not to support symlinked directory well. Let's
refuse that at least here and now.
losetup in util-linux 2.40 started reporting lost loop devices [0] and
it has an unfortunate side-effect where it reports lost devices even in
containers, which then makes the loop device check "falsely" pass [1].
Let's just check for /dev/loop-control explicitly to "work around" this.
[0] a6ca0456cc
[1] https://github.com/util-linux/util-linux/issues/2824
The method returns prematurely (before jobs it triggers terminate). This
is externally visible because other methods may fail if jobs did not
finish.
Postpone the DBus method response until we collect all signals for
finished jobs.
systemd-timedated keeps track of in-flight DBus requests and answers
them all in unspecified order when jobs finish. The capacity of requests
in systemd-timedated is limited.
Fixes: #17739
