Changing the default MODE= for the group accessi, but not specifying
a GROUP= does not provide anything.
It disables the default logic that the mode switches to 0660 as soon
as a GROUP= is specifed, which make custom rules uneccesarily complicated.
https://bugs.freedesktop.org/show_bug.cgi?id=70665
Partially revert 2b3c81b02f, which
tried to avoid inconsistent rules about when and how to create the
/dev/rtc symlink.
Instead of conditionally or not creating the /dev/rtc link at all,
now always create it with additional and more reliable udev rules.
First try to find the "system rtc" with the hctosys flag, if this
is not found, fall back to create the link for /dev/rtc0.
Our code now never actively searches for the "system rtc" it can
always use /dev/rtc.
The export of the RTCs hctosys flag is uneccesary, the kernel takes care
of the persistemt clock management itself, without any need for:
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
"Chaotic hardware platforms" without native kernel persistent clock
support will find the proper RTC with the logic rtc_open() without
the need for a custom symlink.
<heftig> kay: systemd commit 22582bb broke cups usb printing for me
<heftig> because the "lp" group isn't applied anymore
<heftig> SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ENV{ID_USB_INTERFACES}=="*:0701??:*", GROUP="lp"
<heftig> moving this line to the end of 50-udev-default.rules restores correct behavior, as it's after usb_id
Much like logind has a client in loginctl, and journald in journalctl
introduce timedatectl, to change the system time (incl. RTC), timezones
and related settings.
