platform_system_sepolicy/private/hal_health.te

# HwBinder IPC from client to server, and callbacks
binder_call(hal_health_client, hal_health_server)
binder_call(hal_health_server, hal_health_client)

hal_attribute_hwservice(hal_health, hal_health_hwservice)
hal_attribute_service(hal_health, hal_health_service)

# Common rules for a health service.

# Allow to listen to uevents for updates
allow hal_health_server self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl;

# Allow to read /sys/class/power_supply directory
allow hal_health_server sysfs:dir r_dir_perms;

# Allow to read files under /sys/class/power_supply. Implementations typically have symlinks
# to vendor specific files. Vendors should mark sysfs_batteryinfo on all files read by health
# HAL service.
r_dir_file(hal_health_server, sysfs_batteryinfo)

# Allow to wake up to send periodic events
wakelock_use(hal_health_server)

# Write to /dev/kmsg
allow hal_health_server kmsg_device:chr_file { getattr w_file_perms };

# Allow to use timerfd to wake itself up periodically to send health info.
allow hal_health_server self:capability2 wake_alarm;

# Use bpf programs
allow hal_health_server fs_bpf_vendor:dir search;
allow hal_health_server fs_bpf_vendor:file read;
allow hal_health_server bpfloader:bpf prog_run;