5e37271df8
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
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
type keystore, domain;
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type keystore_exec, system_file_type, exec_type, file_type;
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# keystore daemon
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typeattribute keystore mlstrustedsubject;
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binder_use(keystore)
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binder_service(keystore)
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binder_call(keystore, system_server)
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allow keystore keystore_data_file:dir create_dir_perms;
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allow keystore keystore_data_file:notdevfile_class_set create_file_perms;
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allow keystore keystore_exec:file { getattr };
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add_service(keystore, keystore_service)
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allow keystore sec_key_att_app_id_provider_service:service_manager find;
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allow keystore dropbox_service:service_manager find;
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# Check SELinux permissions.
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selinux_check_access(keystore)
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r_dir_file(keystore, cgroup)
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###
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### Neverallow rules
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###
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### Protect ourself from others
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###
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neverallow { domain -keystore } keystore_data_file:dir ~{ open create read getattr setattr search relabelto ioctl };
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neverallow { domain -keystore } keystore_data_file:notdevfile_class_set ~{ relabelto getattr };
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neverallow { domain -keystore -init } keystore_data_file:dir *;
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neverallow { domain -keystore -init } keystore_data_file:notdevfile_class_set *;
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neverallow * keystore:process ptrace;
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