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For now this only reads man: URLs, but later on we might want to support
info: too. http/https is probably out of focus.

systemd-udev is currently incorrectly labeling /run/udev/* content because it is
using selinux prefix labeling of /dev.  This patch will allow systemd-udev to
use prefix labeling of /dev and /run.

MIMO USB displays use a generic VID/PID for the hub component. With a
bit of trickery we can detect them by the VID/PID of the graphics
component.

This reverts commits d72238fc and
f3accc08.

OLPC runs / as a bind-mount, so this must be remounted RO during
shutdown to avoid corruption.

As Lennert can't recall the exact reasons for making the shutdown
code skip bind mounts, revert to previous behaviour to solve the
issue for OLPC.

http://lists.freedesktop.org/archives/systemd-devel/2012-April/004957.html

NotifySocket= is hardly useful, people should use $NOTIFY_SOCKET if
anything.

RunningAs= suggests people had a choice of running user mode as PID 1 or
vice versa, so remove this too.

This moves FsckPassNo= and SysVStartPriority= into its own
"Compatibility Options" section in the man page to clarify that these
options are not useful for anything but establishing a limited amount of
compatibility.

Also stop exposing these options on the bus.

If a graphical session without full DE that handles power/suspend events
is used this can now be controlled by logind instead, optionally.

In udev rules the labels must be assigned to GOTO keys with '='.

Avoid a busy loop.

This takes handling of chassis power and sleep keys as well as the lid
switch over from acpid.

This logic is enabled by default for power and sleep keys, but not for
the lid switch.

If a graphical session is in the foreground no action is taken under the
assumption that the graphical session does this.

This hooks things up with /proc/sys/kernel/usermodehelper/bset and
/proc/sys/kernel/usermodehelper/inheritable.

cgtop quits on startup if all the cgroup mounts it expects are not available.
Just continue without nonexistant ones.

https://bugs.freedesktop.org/show_bug.cgi?id=50402