1type bpfloader_exec, system_file_type, exec_type, file_type; 2 3typeattribute bpfloader bpfdomain; 4 5# allow bpfloader to write to the kernel log (starts early) 6allow bpfloader kmsg_device:chr_file w_file_perms; 7 8# These permissions are required to pin ebpf maps & programs. 9allow bpfloader bpffs_type:dir { add_name create open read remove_name search setattr write }; 10allow bpfloader bpffs_type:file { create getattr read rename setattr }; 11allow bpfloader bpffs_type:lnk_file { create getattr read }; 12allow { bpffs_type -fs_bpf } fs_bpf:filesystem associate; 13 14# Allow bpfloader to create bpf maps and programs. 15allow bpfloader self:bpf { map_create map_read map_write prog_load prog_run }; 16 17allow bpfloader self:capability { chown sys_admin net_admin }; 18 19allow bpfloader sysfs_fs_fuse_bpf:file r_file_perms; 20 21allow bpfloader proc_bpf:file rw_file_perms; 22 23set_prop(bpfloader, bpf_progs_loaded_prop) 24 25allow bpfloader bpfloader_exec:file execute_no_trans; 26 27### 28### Neverallow rules 29### 30 31# Note: we don't care about getattr/mounton/search 32neverallow { domain } bpffs_type:dir ~{ add_name create getattr mounton open read remove_name search setattr write }; 33neverallow { domain -bpfloader } bpffs_type:dir { add_name create open read remove_name setattr write }; 34 35neverallow { domain } bpffs_type:file ~{ create getattr map open read rename setattr write }; 36neverallow { domain -bpfloader } bpffs_type:file { create map open rename setattr }; 37neverallow { domain -bpfloader -gpuservice -lmkd -mediaprovider_app -netd -netutils_wrapper -system_server } fs_bpf:file { getattr read }; 38neverallow { domain -bpfloader } fs_bpf_loader:file { getattr read }; 39neverallow { domain -bpfloader -network_stack } fs_bpf_net_private:file { getattr read }; 40neverallow { domain -bpfloader -network_stack -system_server } fs_bpf_net_shared:file { getattr read }; 41neverallow { domain -bpfloader -netd -network_stack -system_server } fs_bpf_netd_readonly:file { getattr read }; 42neverallow { domain -bpfloader -netd -netutils_wrapper -network_stack -system_server } fs_bpf_netd_shared:file { getattr read }; 43neverallow { domain -bpfloader -network_stack } fs_bpf_tethering:file { getattr read }; 44neverallow { domain -bpfloader -uprobestats } fs_bpf_uprobestats:file { getattr read }; 45neverallow { domain -bpfloader -gpuservice -lmkd -netd -netutils_wrapper -network_stack -system_server -uprobestats } { bpffs_type -fs_bpf_vendor }:file write; 46 47neverallow { domain -bpfloader } bpffs_type:lnk_file ~read; 48neverallow { domain -bpfdomain } bpffs_type:lnk_file read; 49 50neverallow { domain -bpfloader } *:bpf prog_load; 51neverallow { domain -bpfdomain } *:bpf { map_create map_read map_write prog_run }; 52 53# 'fs_bpf_loader' is for internal use of the BpfLoader oneshot boot time process. 54neverallow { domain -bpfloader } fs_bpf_loader:bpf *; 55neverallow { domain -bpfloader } fs_bpf_loader:file *; 56 57neverallow { domain -bpfloader -init } bpfloader_exec:file { execute execute_no_trans }; 58 59neverallow { coredomain -bpfloader -netd -netutils_wrapper } fs_bpf_vendor:file *; 60 61neverallow bpfloader *:{ tcp_socket udp_socket rawip_socket } *; 62 63# No domain should be allowed to ptrace bpfloader 64neverallow { domain userdebug_or_eng(`-llkd') } bpfloader:process ptrace; 65 66neverallow { domain -bpfloader } proc_bpf:file write; 67