android_system_sepolicy/public/hwservicemanager.te
Nick Kralevich 5e37271df8 Introduce system_file_type
system_file_type is a new attribute used to identify files which exist
on the /system partition. It's useful for allow rules in init, which are
based off of a blacklist of writable files. Additionally, it's useful
for constructing neverallow rules to prevent regressions.

Additionally, add commented out tests which enforce that all files on
the /system partition have the system_file_type attribute. These tests
will be uncommented in a future change after all the device-specific
policies are cleaned up.

Test: Device boots and no obvious problems.
Change-Id: Id9bae6625f042594c8eba74ca712abb09702c1e5
2018-09-27 12:52:09 -07:00

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# hwservicemanager - the Binder context manager for HAL services
type hwservicemanager, domain, mlstrustedsubject;
type hwservicemanager_exec, system_file_type, exec_type, file_type;
# Note that we do not use the binder_* macros here.
# hwservicemanager provides name service (aka context manager)
# for hwbinder.
# Additionally, it initiates binder IPC calls to
# clients who request service notifications. The permission
# to do this is granted in the hwbinder_use macro.
allow hwservicemanager self:binder set_context_mgr;
set_prop(hwservicemanager, hwservicemanager_prop)
# Scan through /system/lib64/hw looking for installed HALs
allow hwservicemanager system_file:dir r_dir_perms;
# Read hwservice_contexts
allow hwservicemanager hwservice_contexts_file:file r_file_perms;
# Check SELinux permissions.
selinux_check_access(hwservicemanager)