power_manager/udev/99-powerd-permissions.rules

# Copyright 2022 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# wakeup attributes may appear statically (at 'add' time) for some devices,
# while others will be added dynamically by various runtime triggers, for
# 'bind' or 'change'.
ACTION=="add|bind|change", TEST=="power/wakeup", \
  RUN+="/bin/chown power:power \"$sys$devpath/power/wakeup\""

# For all the following permission changes, the corresponding attribute is
# available when the device is added.
ACTION!="add", GOTO="powerd_permissions_end"

TEST=="power/control", \
  RUN+="/bin/chown power:power \"$sys$devpath/power/control\""
TEST=="power/autosuspend_delay_ms", \
  RUN+="/bin/chown power:power \"$sys$devpath/power/autosuspend_delay_ms\""
TEST=="inhibited", \
  RUN+="/bin/chown power:power \"$sys$devpath/inhibited\""

# Allow powerd to read bluetooth host controller identity
SUBSYSTEM=="bluetooth", ENV{DEVTYPE}=="host", \
  TEST=="identity", \
  RUN+="/bin/chown power:power \"$sys$devpath/identity\""

# Allow powerd to program the RTC wakealarm
TEST=="wakealarm", SUBSYSTEM=="rtc", \
  RUN+="/bin/chown power:power \"$sys$devpath/wakealarm\""

# Make pluggable keyboard backlights writable by powerd.
SUBSYSTEM=="leds", DEVPATH=="*:kbd_backlight", \
  RUN+="/lib/udev/chown-sysfs-backlight-dir.sh \"$sys$devpath\""

# Older kernels (<v4.19) put cros_fp under the chromeos class
# The cros_ec-access group is also required by cros_healthd (the associated user
# that is part of the cros_ec-access group is "healthd_ec").
SUBSYSTEM=="chromeos|misc", KERNEL=="cros_ec" OWNER="root", \
  GROUP="cros_ec-access" MODE="0660"

LABEL="powerd_permissions_end"