policy_module(lpd,1.0.1) ######################################## # # Declarations # type checkpc_t; type checkpc_exec_t; init_system_domain(checkpc_t,checkpc_exec_t) role system_r types checkpc_t; type checkpc_log_t; logging_log_file(checkpc_log_t) type lpd_t; type lpd_exec_t; init_daemon_domain(lpd_t,lpd_exec_t) type lpd_tmp_t; files_tmp_file(lpd_tmp_t) type lpd_var_run_t; files_pid_file(lpd_var_run_t) type print_spool_t; files_tmp_file(print_spool_t) type printer_t; files_type(printer_t) type printconf_t; files_type(printconf_t) ######################################## # # Checkpc local policy # # Allow checkpc to access the lpd spool so it can check & fix it. # This requires that /usr/sbin/checkpc have type checkpc_t. allow checkpc_t self:capability { setgid setuid dac_override }; allow checkpc_t self:process { fork signal_perms }; allow checkpc_t self:unix_stream_socket create_socket_perms; allow checkpc_t checkpc_log_t:file create_file_perms; logging_create_log(checkpc_t,checkpc_log_t) allow checkpc_t lpd_var_run_t:dir { search getattr }; files_search_pids(checkpc_t) allow checkpc_t print_spool_t:file { rw_file_perms unlink }; allow checkpc_t print_spool_t:dir { read write search add_name remove_name getattr }; files_search_spool(checkpc_t) allow checkpc_t printconf_t:file getattr; allow checkpc_t printconf_t:dir { getattr search read }; kernel_read_system_state(checkpc_t) allow checkpc_t self:tcp_socket create_socket_perms; allow checkpc_t self:udp_socket create_socket_perms; corenet_tcp_sendrecv_all_if(checkpc_t) corenet_udp_sendrecv_all_if(checkpc_t) corenet_raw_sendrecv_all_if(checkpc_t) corenet_tcp_sendrecv_all_nodes(checkpc_t) corenet_udp_sendrecv_all_nodes(checkpc_t) corenet_raw_sendrecv_all_nodes(checkpc_t) corenet_tcp_sendrecv_all_ports(checkpc_t) corenet_udp_sendrecv_all_ports(checkpc_t) corenet_non_ipsec_sendrecv(checkpc_t) corenet_tcp_bind_all_nodes(checkpc_t) corenet_udp_bind_all_nodes(checkpc_t) corenet_tcp_connect_all_ports(checkpc_t) dev_append_printer(checkpc_t) # This is less desirable, but checkpc demands /bin/bash and /bin/chown: corecmd_exec_shell(checkpc_t) corecmd_exec_bin(checkpc_t) corecmd_search_sbin(checkpc_t) domain_use_wide_inherit_fd(checkpc_t) files_read_etc_files(checkpc_t) files_read_etc_runtime_files(checkpc_t) init_use_script_pty(checkpc_t) # Allow access to /dev/console through the fd: init_use_fd(checkpc_t) libs_use_ld_so(checkpc_t) libs_use_shared_libs(checkpc_t) sysnet_read_config(checkpc_t) ifdef(`targeted_policy',` term_use_generic_pty(checkpc_t) term_use_unallocated_tty(checkpc_t) ') optional_policy(`cron',` cron_system_entry(checkpc_t,checkpc_exec_t) ') optional_policy(`logging',` logging_send_syslog_msg(checkpc_t) ') optional_policy(`nis',` nis_use_ypbind(checkpc_t) ') ######################################## # # Lpd local policy # allow lpd_t self:capability { setgid setuid net_bind_service dac_read_search dac_override chown fowner }; dontaudit lpd_t self:capability sys_tty_config; allow lpd_t self:process signal_perms; allow lpd_t self:fifo_file rw_file_perms; allow lpd_t self:unix_stream_socket create_stream_socket_perms; allow lpd_t self:unix_dgram_socket create_socket_perms; allow lpd_t lpd_tmp_t:dir create_dir_perms; allow lpd_t lpd_tmp_t:file create_file_perms; files_create_tmp_files(lpd_t, lpd_tmp_t, { file dir }) allow lpd_t lpd_var_run_t:dir rw_dir_perms; allow lpd_t lpd_var_run_t:file create_file_perms; allow lpd_t lpd_var_run_t:sock_file create_file_perms; files_create_pid(lpd_t,lpd_var_run_t) # Write to /var/spool/lpd. allow lpd_t print_spool_t:dir rw_dir_perms; allow lpd_t print_spool_t:file create_file_perms; allow lpd_t print_spool_t:file rw_file_perms; files_search_spool(lpd_t) # lpd must be able to execute the filter utilities in /usr/share/printconf. allow lpd_t printconf_t:dir { getattr search read }; can_exec(lpd_t, printconf_t) # Create and bind to /dev/printer. allow lpd_t printer_t:lnk_file create_lnk_perms; dev_create_dev_node(lpd_t,printer_t,lnk_file) # cjp: I believe these have no effect: allow lpd_t printer_t:unix_stream_socket name_bind; allow lpd_t printer_t:unix_dgram_socket name_bind; kernel_read_kernel_sysctl(lpd_t) # bash wants access to /proc/meminfo kernel_read_system_state(lpd_t) allow lpd_t self:tcp_socket create_stream_socket_perms; allow lpd_t self:udp_socket create_stream_socket_perms; corenet_tcp_sendrecv_all_if(lpd_t) corenet_udp_sendrecv_all_if(lpd_t) corenet_raw_sendrecv_all_if(lpd_t) corenet_tcp_sendrecv_all_nodes(lpd_t) corenet_udp_sendrecv_all_nodes(lpd_t) corenet_raw_sendrecv_all_nodes(lpd_t) corenet_tcp_sendrecv_all_ports(lpd_t) corenet_udp_sendrecv_all_ports(lpd_t) corenet_non_ipsec_sendrecv(lpd_t) corenet_tcp_bind_all_nodes(lpd_t) corenet_udp_bind_all_nodes(lpd_t) corenet_tcp_bind_printer_port(lpd_t) dev_read_sysfs(lpd_t) dev_rw_printer(lpd_t) fs_getattr_all_fs(lpd_t) fs_search_auto_mountpoints(lpd_t) term_dontaudit_use_console(lpd_t) # Filter scripts may be shell scripts, and may invoke progs like /bin/mktemp corecmd_exec_bin(lpd_t) corecmd_exec_sbin(lpd_t) corecmd_exec_shell(lpd_t) domain_use_wide_inherit_fd(lpd_t) files_read_etc_runtime_files(lpd_t) files_read_usr_files(lpd_t) # for defoma files_list_world_readable(lpd_t) files_read_world_readable_files(lpd_t) files_read_world_readable_symlinks(lpd_t) files_list_var_lib(lpd_t) files_read_var_lib_files(lpd_t) files_read_var_lib_symlinks(lpd_t) # config files for lpd are of type etc_t, probably should change this files_read_etc_files(lpd_t) init_use_fd(lpd_t) init_use_script_pty(lpd_t) libs_use_ld_so(lpd_t) libs_use_shared_libs(lpd_t) logging_send_syslog_msg(lpd_t) miscfiles_read_fonts(lpd_t) miscfiles_read_localization(lpd_t) sysnet_read_config(lpd_t) userdom_dontaudit_use_unpriv_user_fd(lpd_t) userdom_dontaudit_search_sysadm_home_dir(lpd_t) ifdef(`targeted_policy',` term_dontaudit_use_unallocated_tty(lpd_t) term_dontaudit_use_generic_pty(lpd_t) files_dontaudit_read_root_file(lpd_t) ') optional_policy(`nis',` nis_use_ypbind(lpd_t) nis_tcp_connect_ypbind(lpd_t) ') optional_policy(`portmap',` portmap_udp_sendto(lpd_t) ') optional_policy(`selinuxutil',` seutil_sigchld_newrole(lpd_t) ') optional_policy(`udev',` udev_read_db(lpd_t) ')