platform_system_sepolicy/public/vdc.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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# vdc spawned from init for the following services:
# defaultcrypto
# encrypt
#
# We also transition into this domain from dumpstate, when
# collecting bug reports.
type vdc, domain;
type vdc_exec, system_file_type, exec_type, file_type;
# vdc can be invoked with logwrapper, so let it write to pty
allow vdc devpts:chr_file rw_file_perms;
# vdc writes directly to kmsg during the boot process
allow vdc kmsg_device:chr_file w_file_perms;
# vdc talks to vold over Binder
binder_use(vdc)
binder_call(vdc, vold)
allow vdc vold_service:service_manager find;