Security warnings for system folders (startup logged messages)

[saropa]

Steps to Reproduce

As reported in the original package: W/isarworker( 8160): avc: denied { getattr } for path="/metadata" on app startup

Code sample

        final Directory dir = await getApplicationDocumentsDirectory();

        _isar = await Isar.open(
          isarSchemas,
          directory: dir.path,
          inspector: isIsarInspectorEnabled,
        );

W/isarworker(27662): type=1400 audit(0.0:360): avc:  denied  { getattr } for  path="/metadata" dev="vdd1" ino=2 scontext=u:r:untrusted_app:s0:c190,c256,c512,c768 tcontext=u:object_r:metadata_file:s0 tclass=dir permissive=0 app=com.sm.app

W/isarworker(27662): type=1400 audit(0.0:361): avc:  denied  { getattr } for  path="/system_dlkm" dev="dm-4" ino=38 scontext=u:r:untrusted_app:s0:c190,c256,c512,c768 tcontext=u:object_r:system_dlkm_file:s0 tclass=dir permissive=0 app=com.sm.app

W/isarworker(27662): type=1400 audit(0.0:362): avc:  denied  { getattr } for  path="/apex/apex-info-list.xml" dev="tmpfs" ino=88 scontext=u:r:untrusted_app:s0:c190,c256,c512,c768 tcontext=u:object_r:apex_info_file:s0 tclass=file permissive=0 app=com.sm.app

W/isarworker(27662): type=1400 audit(0.0:363): avc:  denied  { getattr } for  path="/linkerconfig" dev="tmpfs" ino=3 scontext=u:r:untrusted_app:s0:c190,c256,c512,c768 tcontext=u:object_r:linkerconfig_file:s0 tclass=dir permissive=0 app=com.sm.app

W/isarworker(27662): type=1400 audit(0.0:364): avc:  denied  { getattr } for  path="/linkerconfig" dev="tmpfs" ino=3 scontext=u:r:untrusted_app:s0:c190,c256,c512,c768 tcontext=u:object_r:linkerconfig_file:s0 tclass=dir permissive=0 app=com.sm.app

W/isarworker(27662): type=1400 audit(0.0:365): avc:  denied  { getattr } for  path="/metadata" dev="vdd1" ino=2 scontext=u:r:untrusted_app:s0:c190,c256,c512,c768 tcontext=u:object_r:metadata_file:s0 tclass=dir permissive=0 app=com.sm.app

W/isarworker(27662): type=1400 audit(0.0:366): avc:  denied  { getattr } for  path="/system_dlkm" dev="dm-4" ino=38 scontext=u:r:untrusted_app:s0:c190,c256,c512,c768 tcontext=u:object_r:system_dlkm_file:s0 tclass=dir permissive=0 app=com.sm.app

Details

Whilst not blocking, it is a bit concerning to get folder security warnings. Is there a way to configure the open() to avoid the protected systems folders?

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