platform_system_sepolicy/prebuilts/api/31.0/public/tzdatacheck.te
Inseob Kim 08d4c8fa6e Add fake 31.0 prebuilt
This commit adds fake 31.0 prebuilt. The prebuilt is based on AOSP
policy, but slightly modified so the set of types and attributes is a
subset of real 31.0 prebuilt (sc-dev policy).

Steps taken to make the fake prebuilt:

1) build plat_sepolicy.cil both on AOSP and sc-dev, with lunch target
aosp_arm64-eng.
2) diff both outputs to find out which types and attributes don't exist.
3) remove all relevant files and statements.

As a result, the following types are removed.

artd
artd_exec
artd_service
power_stats_service
transformer_service
virtualizationservice
virtualizationservice_data_file
virtualizationservice_exec

Bug: 189161483
Test: N/A, will do after adding 31.0 mapping files.
Change-Id: Ia957fc32b1838dae730d9dd7bd917d684d4a24cf
Merged-In: Ia4ea2999f4bc8ae80f13e51d99fba3e98e293447
2021-06-15 12:08:00 +00:00

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1 KiB
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# The tzdatacheck command run by init.
type tzdatacheck, domain;
type tzdatacheck_exec, system_file_type, exec_type, file_type;
allow tzdatacheck zoneinfo_data_file:dir create_dir_perms;
allow tzdatacheck zoneinfo_data_file:file unlink;
# Below are strong assertion that only init, system_server and tzdatacheck
# can modify the /data time zone rules directories. This is to make it very
# clear that only these domains should modify the actual time zone rules data.
# The tzdatacheck binary itself may be executed by shell for tests but it must
# not be able to modify the real rules.
# If other users / binaries could modify time zone rules on device this might
# have negative implications for users (who may get incorrect local times)
# or break assumptions made / invalidate data held by the components actually
# responsible for updating time zone rules.
neverallow { domain -system_server -init -tzdatacheck } zoneinfo_data_file:file no_w_file_perms;
neverallow { domain -system_server -init -tzdatacheck } zoneinfo_data_file:dir no_w_dir_perms;