23c9d91b46
Currently, both untrusted apps and priv-apps use the SELinux file label
"app_data_file" for files in their /data/data directory. This is
problematic, as we really want different rules for such files. For
example, we may want to allow untrusted apps to load executable code
from priv-app directories, but disallow untrusted apps from loading
executable code from their own home directories.
This change adds a new file type "privapp_data_file". For compatibility,
we adjust the policy to support access privapp_data_files almost
everywhere we were previously granting access to app_data_files
(adbd and run-as being exceptions). Additional future tightening is
possible here by removing some of these newly added rules.
This label will start getting used in a followup change to
system/sepolicy/private/seapp_contexts, similar to:
-user=_app isPrivApp=true domain=priv_app type=app_data_file levelFrom=user
+user=_app isPrivApp=true domain=priv_app type=privapp_data_file levelFrom=user
For now, this newly introduced label has no usage, so this change
is essentially a no-op.
Test: Factory reset and boot - no problems on fresh install.
Test: Upgrade to new version and test. No compatibility problems on
filesystem upgrade.
Change-Id: I9618b7d91d1c2bcb5837cdabc949f0cf741a2837
29 lines
1 KiB
Text
29 lines
1 KiB
Text
# profman
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type profman, domain;
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type profman_exec, exec_type, file_type;
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allow profman user_profile_data_file:file { getattr read write lock };
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# Dumping profile info opens the application APK file for pretty printing.
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allow profman asec_apk_file:file { read };
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allow profman apk_data_file:file { getattr read };
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allow profman apk_data_file:dir { getattr read search };
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allow profman oemfs:file { read };
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# Reading an APK opens a ZipArchive, which unpack to tmpfs.
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allow profman tmpfs:file { read };
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allow profman profman_dump_data_file:file { write };
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allow profman installd:fd use;
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# Allow profman to analyze profiles for the secondary dex files. These
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# are application dex files reported back to the framework when using
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# BaseDexClassLoader.
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allow profman { privapp_data_file app_data_file }:file { getattr read write lock };
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allow profman { privapp_data_file app_data_file }:dir { getattr read search };
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###
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### neverallow rules
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###
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neverallow profman { privapp_data_file app_data_file }:notdevfile_class_set open;
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