606d2fd665
Introduce the add_service() macro which wraps up add/find
permissions for the source domain with a neverallow preventing
others from adding it. Only a particular domain should
add a particular service.
Use the add_service() macro to automatically add a neverallow
that prevents other domains from adding the service.
mediadrmserver was adding services labeled mediaserver_service.
Drop the add permission as it should just need the find
permission.
Additionally, the macro adds the { add find } permission which
causes some existing neverallow's to assert. Adjust those
neverallow's so "self" can always find.
Test: compile and run on hikey and emulator. No new denials were
found, and all services, where applicable, seem to be running OK.
Change-Id: Ibbd2a5304edd5f8b877bc86852b0694732be993c
Signed-off-by: William Roberts <william.c.roberts@intel.com>
40 lines
1.4 KiB
Plaintext
40 lines
1.4 KiB
Plaintext
# Domain for update_engine daemon.
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# update_engine uses the boot_control_hal.
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type update_engine, domain, domain_deprecated, update_engine_common, boot_control_hal;
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type update_engine_exec, exec_type, file_type;
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type update_engine_data_file, file_type, data_file_type;
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net_domain(update_engine);
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# Following permissions are needed for update_engine.
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allow update_engine self:process { setsched };
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allow update_engine self:capability { fowner sys_admin };
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allow update_engine kmsg_device:chr_file w_file_perms;
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allow update_engine update_engine_exec:file rx_file_perms;
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wakelock_use(update_engine);
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# Ignore these denials.
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dontaudit update_engine kernel:process setsched;
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# Allow using persistent storage in /data/misc/update_engine.
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allow update_engine update_engine_data_file:dir { create_dir_perms };
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allow update_engine update_engine_data_file:file { create_file_perms };
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# Don't allow kernel module loading, just silence the logs.
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dontaudit update_engine kernel:system module_request;
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# Register the service to perform Binder IPC.
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binder_use(update_engine)
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add_service(update_engine, update_engine_service)
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# Allow update_engine to call the callback function provided by priv_app.
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binder_call(update_engine, priv_app)
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# Read OTA zip file at /data/ota_package/.
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allow update_engine ota_package_file:file r_file_perms;
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allow update_engine ota_package_file:dir r_dir_perms;
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# Use binderized HAL
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hwbinder_use(update_engine)
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binder_call(update_engine, hal_boot)
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