Add system files to set up group access for performance mode

qzed · qzed · commit 190f21fe32b4 · 2021-02-05T03:48:29.000+01:00
Add a sysusers.d file to create a 'surface-control' group as well as
udev rules to change the group ownership of the sysfs 'perf_mode'
attribute to that group. This group can then be used to change the
performance mode without sudo.
diff --git a/etc/sysusers/surface-control.conf b/etc/sysusers/surface-control.conf
@@ -0,0 +1 @@
+g surface-control - -
diff --git a/etc/udev/40-surface-control.rules b/etc/udev/40-surface-control.rules
@@ -0,0 +1,2 @@
+KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chmod 664 /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"
+KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chown root:surface-control /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chmod 664 /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"`
	`2`	`+KERNEL=="01:03:01:00:01", SUBSYSTEM=="surface_aggregator", RUN+="/usr/bin/chown root:surface-control /sys/bus/surface_aggregator/devices/01:03:01:00:01/perf_mode"`