private/bpfloader.te

# bpf program loader
type bpfloader, domain;
type bpfloader_exec, system_file_type, exec_type, file_type;
typeattribute bpfloader coredomain;

# These permissions are required to pin ebpf maps & programs.
allow bpfloader fs_bpf:dir { search write add_name };
allow bpfloader fs_bpf:file { create setattr read };

# Allow bpfloader to create bpf maps and programs.
allow bpfloader self:bpf { map_create map_read map_write prog_load prog_run };

allow bpfloader self:capability { chown sys_admin };

###
### Neverallow rules
###

# TODO: get rid of init & vendor_init
neverallow { domain -init -vendor_init } fs_bpf:dir setattr;
neverallow { domain -bpfloader } fs_bpf:dir { write add_name };
neverallow domain fs_bpf:dir { reparent rename rmdir };

# TODO: get rid of init & vendor_init
neverallow { domain -bpfloader -init -vendor_init } fs_bpf:file setattr;
neverallow { domain -bpfloader } fs_bpf:file create;
neverallow domain fs_bpf:file { rename unlink };

neverallow { domain -bpfloader } *:bpf { map_create prog_load };
neverallow { domain -bpfloader -netd -netutils_wrapper -system_server } *:bpf prog_run;
neverallow { domain -bpfloader -netd -system_server } *:bpf { map_read map_write };

neverallow { domain -bpfloader -init } bpfloader_exec:file { execute execute_no_trans };

neverallow bpfloader domain:{ tcp_socket udp_socket rawip_socket } *;

# No domain should be allowed to ptrace bpfloader
neverallow { domain userdebug_or_eng(`-llkd') } bpfloader:process ptrace;

set_prop(bpfloader, bpf_progs_loaded_prop)