1# bpf program loader 2type bpfloader, domain; 3type bpfloader_exec, system_file_type, exec_type, file_type; 4typeattribute bpfloader coredomain; 5 6# These permissions are required to pin ebpf maps & programs. 7allow bpfloader { fs_bpf fs_bpf_tethering }:dir { add_name create search write }; 8allow bpfloader { fs_bpf fs_bpf_tethering }:file { create read setattr }; 9allow fs_bpf_tethering fs_bpf:filesystem associate; 10 11# Allow bpfloader to create bpf maps and programs. 12allow bpfloader self:bpf { map_create map_read map_write prog_load prog_run }; 13 14allow bpfloader self:capability { chown sys_admin net_admin }; 15 16set_prop(bpfloader, bpf_progs_loaded_prop) 17 18### 19### Neverallow rules 20### 21 22# TODO: get rid of init & vendor_init; Note: we don't care about getattr/mounton/search 23neverallow { domain -init -vendor_init } { fs_bpf fs_bpf_tethering }:dir { open read setattr }; 24neverallow { domain -bpfloader } { fs_bpf fs_bpf_tethering }:dir { add_name create write }; 25neverallow domain { fs_bpf fs_bpf_tethering }:dir ~{ add_name create getattr mounton open read search setattr write }; 26 27# TODO: get rid of init & vendor_init 28neverallow { domain -bpfloader -init -vendor_init } { fs_bpf fs_bpf_tethering }:file { map open setattr }; 29neverallow { domain -bpfloader } { fs_bpf fs_bpf_tethering }:file create; 30neverallow { domain -bpfloader -gpuservice -init -lmkd -netd -netutils_wrapper -network_stack -system_server -vendor_init } { fs_bpf fs_bpf_tethering }:file read; 31neverallow { domain -bpfloader -gpuservice -netd -netutils_wrapper -network_stack -system_server } { fs_bpf fs_bpf_tethering }:file write; 32neverallow domain { fs_bpf fs_bpf_tethering }:file ~{ create map open read setattr write }; 33 34neverallow { domain -bpfloader } *:bpf { map_create prog_load }; 35neverallow { domain -bpfloader -gpuservice -netd -netutils_wrapper -network_stack -system_server } *:bpf prog_run; 36neverallow { domain -bpfloader -gpuservice -lmkd -netd -network_stack -system_server } *:bpf { map_read map_write }; 37 38neverallow { domain -bpfloader -init } bpfloader_exec:file { execute execute_no_trans }; 39 40neverallow bpfloader *:{ tcp_socket udp_socket rawip_socket } *; 41 42# No domain should be allowed to ptrace bpfloader 43neverallow { domain userdebug_or_eng(`-llkd') } bpfloader:process ptrace; 44