Save appIds permissions for each user
PermissionMonitor does not store any information regarding
traffic permission. It just checks permission from each package
and sends the result to netd. In addition, bpf can store traffic
permissions for appIds only because of memory limitations.
However, there is a mistaken permission overwriting when
different packages are installed on multi-user. Because
PermissionMonitor updates appIds traffic permissions to netd
from each user, so the permission result will depend on the
latest user state.
To fix the problem, save the traffic permissions by each user and
appId on PermissionMonitor. An appId has a permission if and
only if at least one uid in that appId has that permission.
bug: 224775316
Test: atest FrameworksNetTests CtsNetTestCases \
CtsNetTestCasesUpdateStatsPermission \
CtsNetTestCasesInternetPermission
Change-Id: Ieb01fb21f6201a58723eb7e6446b127627be2c0e
2 files changed