platform_system_sepolicy/public/healthd.te
Jaekyun Seok e49714542e Whitelist exported platform properties
This CL lists all the exported platform properties in
private/exported_property_contexts.

Additionally accessing core_property_type from vendor components is
restricted.
Instead public_readable_property_type is used to allow vendor components
to read exported platform properties, and accessibility from
vendor_init is also specified explicitly.

Note that whitelisting would be applied only if
PRODUCT_COMPATIBLE_PROPERTY is set on.

Bug: 38146102
Test: tested on walleye with PRODUCT_COMPATIBLE_PROPERTY=true
Change-Id: I304ba428cc4ca82668fec2ddeb17c971e7ec065e
2018-01-10 16:15:25 +00:00

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1.9 KiB
Text

# healthd - battery/charger monitoring service daemon
type healthd, domain;
type healthd_exec, exec_type, file_type;
# Write to /dev/kmsg
allow healthd kmsg_device:chr_file rw_file_perms;
# Read access to pseudo filesystems.
allow healthd sysfs_type:dir search;
r_dir_file(healthd, rootfs)
r_dir_file(healthd, cgroup)
# Read access to system files for passthrough HALs in
# /{system,vendor,odm}/lib[64]/hw/
r_dir_file(healthd, system_file)
allow healthd self:global_capability_class_set { sys_tty_config };
allow healthd self:global_capability_class_set sys_boot;
allow healthd self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl;
wakelock_use(healthd)
binder_use(healthd)
binder_service(healthd)
binder_call(healthd, system_server)
hal_client_domain(healthd, hal_health)
# Read/write to /sys/power/state
allow healthd sysfs_power:file rw_file_perms;
# TODO: added to match above sysfs rule. Remove me?
allow healthd sysfs_usb:file write;
r_dir_file(healthd, sysfs_batteryinfo)
###
### healthd: charger mode
###
# Read /sys/fs/pstore/console-ramoops
# Don't worry about overly broad permissions for now, as there's
# only one file in /sys/fs/pstore
allow healthd pstorefs:dir r_dir_perms;
allow healthd pstorefs:file r_file_perms;
allow healthd graphics_device:dir r_dir_perms;
allow healthd graphics_device:chr_file rw_file_perms;
allow healthd input_device:dir r_dir_perms;
allow healthd input_device:chr_file r_file_perms;
allow healthd tty_device:chr_file rw_file_perms;
allow healthd ashmem_device:chr_file execute;
allow healthd self:process execmem;
allow healthd proc_sysrq:file rw_file_perms;
add_service(healthd, batteryproperties_service)
# Healthd needs to tell init to continue the boot
# process when running in charger mode.
set_prop(healthd, system_prop)
set_prop(healthd, exported_system_prop)
set_prop(healthd, exported2_system_prop)
set_prop(healthd, exported3_system_prop)