android_system_sepolicy/public/neverallow_macros

#
# Common neverallow permissions
define(`no_w_file_perms', `{ append create link unlink relabelfrom rename setattr write }')
define(`no_rw_file_perms', `{ no_w_file_perms open read ioctl lock }')
define(`no_x_file_perms', `{ execute execute_no_trans }')
define(`no_w_dir_perms',  `{ add_name create link relabelfrom remove_name rename reparent rmdir setattr write }')

#####################################
# neverallow_establish_socket_comms(src, dst)
# neverallow src domain establishing socket connections to dst domain.
#
define(`neverallow_establish_socket_comms', `
  neverallow $1 $2:socket_class_set { connect sendto };
  neverallow $1 $2:unix_stream_socket connectto;
')