1*e4a36f41SAndroid Build Coastguard Worker# bpf program loader 2*e4a36f41SAndroid Build Coastguard Workertype bpfloader, domain; 3*e4a36f41SAndroid Build Coastguard Workertype bpfloader_exec, system_file_type, exec_type, file_type; 4*e4a36f41SAndroid Build Coastguard Workertypeattribute bpfloader coredomain; 5*e4a36f41SAndroid Build Coastguard Worker 6*e4a36f41SAndroid Build Coastguard Worker# These permission is required for pin bpf program for netd. 7*e4a36f41SAndroid Build Coastguard Workerallow bpfloader fs_bpf:dir create_dir_perms; 8*e4a36f41SAndroid Build Coastguard Workerallow bpfloader fs_bpf:file create_file_perms; 9*e4a36f41SAndroid Build Coastguard Workerallow bpfloader devpts:chr_file { read write }; 10*e4a36f41SAndroid Build Coastguard Worker 11*e4a36f41SAndroid Build Coastguard Worker# Allow bpfloader to create bpf maps and programs. The map_read and map_write permission is needed 12*e4a36f41SAndroid Build Coastguard Worker# for retrieving a pinned map when bpfloader do a run time restart. 13*e4a36f41SAndroid Build Coastguard Workerallow bpfloader self:bpf { prog_load prog_run map_read map_write map_create }; 14*e4a36f41SAndroid Build Coastguard Worker 15*e4a36f41SAndroid Build Coastguard Workerallow bpfloader self:global_capability_class_set sys_admin; 16*e4a36f41SAndroid Build Coastguard Worker 17*e4a36f41SAndroid Build Coastguard Worker### 18*e4a36f41SAndroid Build Coastguard Worker### Neverallow rules 19*e4a36f41SAndroid Build Coastguard Worker### 20*e4a36f41SAndroid Build Coastguard Workerneverallow { domain -bpfloader } *:bpf { map_create prog_load }; 21*e4a36f41SAndroid Build Coastguard Workerneverallow { domain -bpfloader -netd -netutils_wrapper } *:bpf prog_run; 22*e4a36f41SAndroid Build Coastguard Workerneverallow { domain -bpfloader -init } bpfloader_exec:file { execute execute_no_trans }; 23*e4a36f41SAndroid Build Coastguard Workerneverallow bpfloader domain:{ tcp_socket udp_socket rawip_socket } *; 24*e4a36f41SAndroid Build Coastguard Worker# only system_server, netd and bpfloader can read/write the bpf maps 25*e4a36f41SAndroid Build Coastguard Workerneverallow { domain -system_server -netd -bpfloader} *:bpf { map_read map_write }; 26*e4a36f41SAndroid Build Coastguard Worker 27*e4a36f41SAndroid Build Coastguard Worker# No domain should be allowed to ptrace bpfloader 28*e4a36f41SAndroid Build Coastguard Workerneverallow { domain userdebug_or_eng(`-llkd') } bpfloader:process ptrace; 29*e4a36f41SAndroid Build Coastguard Worker 30*e4a36f41SAndroid Build Coastguard Workerset_prop(bpfloader, bpf_progs_loaded_prop) 31