Use bpf maps to store permission information
In newer kernels, we can use cgroup socket filter to control inet socket
creation at run time instead of paranoid network kernel check. To
achieve that, we need to get the permission information from system
server when device boots or new packages are installed. This patch
provides a binder interface to do that and stores the information in a
bpf map. It also records the uids that have permission
UPDATE_DEVICE_STATS so netd no longer needs to query that from the
system server.
Bug: 111560570
Bug: 111560739
Test: netd_unit_test, netd_integration_test
Change-Id: I0c5919d85136feec44c4406ee0bd0028b131b942
diff --git a/server/NetdNativeService.h b/server/NetdNativeService.h
index ba96bcc..26100e8 100644
--- a/server/NetdNativeService.h
+++ b/server/NetdNativeService.h
@@ -96,6 +96,9 @@
binder::Status networkGetDefault(int32_t* netId) override;
binder::Status networkCanProtect(int32_t uid, bool* ret) override;
+ binder::Status trafficSetNetPermForUids(int32_t permission,
+ const std::vector<int32_t>& uids) override;
+
// SOCK_DIAG commands.
binder::Status socketDestroy(const std::vector<UidRangeParcel>& uids,
const std::vector<int32_t>& skipUids) override;