6231b4d9fc
Adds per-app categories to untrusted app domains and their app data types. Per-app categories are in addition to the existing per-user categories. Apps targeting sdk version 28+ will now have the following characteristics: Domain: u:r:untrusted_app:s0:c[0-9]+,c[0-9]+,c[0-9],c[0-9] Data context: u:object_r:app_data_file:s0:c[0-9]+,c[0-9]+,c[0-9],c[0-9] Whereas apps targeting 27- will look like: Domain: u:r:untrusted_app_27:s0:c[0-9]+,c[0-9]+ Data context: u:object_r:app_data_file:s0:c[0-9]+,c[0-9]+ To ensure backwards compatibility with previous SDK versions, the levelFrom=all now enforces categories by dominance instead of equality. Apps with per-app and per-user categories will continue to have selinux permissions (but not necessarily unix permissions) to access app data with only per-user categories, but apps with only per-user categories will not be able to access the data of apps with both per-app and per-user categories. Bug: 63897054 Test: Boot sailfish, run apps, verify no new selinux denials. Test: cts-tradefed run cts -m CtsSelinuxTargetSdkCurrentTestCases Test: cts-tradefed run cts -m CtsSelinuxTargetSdk27TestCases Test: cts-tradefed run cts -m CtsSelinuxTargetSdk25TestCases Test: adb sideload an OTA and verify that files are correctly labeled. Change-Id: I64b013874fe87b55f47e817a1279e76ecf86b7c0
22 lines
982 B
Plaintext
22 lines
982 B
Plaintext
###
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### Untrusted apps.
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###
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### Apps are labeled based on mac_permissions.xml (maps signer and
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### optionally package name to seinfo value) and seapp_contexts (maps UID
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### and optionally seinfo value to domain for process and type for data
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### directory). The untrusted_app domain is the default assignment in
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### seapp_contexts for any app with UID between APP_AID (10000)
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### and AID_ISOLATED_START (99000) if the app has no specific seinfo
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### value as determined from mac_permissions.xml. In current AOSP, this
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### domain is assigned to all non-system apps as well as to any system apps
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### that are not signed by the platform key. To move
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### a system app into a specific domain, add a signer entry for it to
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### mac_permissions.xml and assign it one of the pre-existing seinfo values
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### or define and use a new seinfo value in both mac_permissions.xml and
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### seapp_contexts.
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###
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type untrusted_app, domain;
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type untrusted_app_27, domain;
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type untrusted_app_25, domain;
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