selinux-policy/policy/modules/system/sysnetwork.te

policy_module(sysnetwork,1.2.0)

########################################
#
# Declarations
#

# this is shared between dhcpc and dhcpd:
type dhcp_etc_t;
typealias dhcp_etc_t alias { etc_dhcp_t etc_dhcpc_t etc_dhcpd_t };
files_config_file(dhcp_etc_t)

# this is shared between dhcpc and dhcpd:
type dhcp_state_t;
files_type(dhcp_state_t)

type dhcpc_t;
type dhcpc_exec_t;
init_daemon_domain(dhcpc_t,dhcpc_exec_t)
role system_r types dhcpc_t;

type dhcpc_state_t;
files_type(dhcpc_state_t)

type dhcpc_tmp_t;
files_tmp_file(dhcpc_tmp_t)

type dhcpc_var_run_t;
files_pid_file(dhcpc_var_run_t)

type ifconfig_t;
type ifconfig_exec_t;
init_system_domain(ifconfig_t, ifconfig_exec_t)
role system_r types ifconfig_t;

type net_conf_t alias resolv_conf_t;
files_type(net_conf_t)

########################################
#
# DHCP client local policy
#
allow dhcpc_t self:capability { dac_override fsetid net_admin net_raw net_bind_service sys_resource sys_tty_config };
dontaudit dhcpc_t self:capability sys_tty_config;
# for access("/etc/bashrc", X_OK) on Red Hat
dontaudit dhcpc_t self:capability { dac_read_search sys_module };
allow dhcpc_t self:process signal_perms;
allow dhcpc_t self:fifo_file rw_file_perms;
allow dhcpc_t self:tcp_socket create_stream_socket_perms;
allow dhcpc_t self:udp_socket create_socket_perms;
allow dhcpc_t self:packet_socket create_socket_perms;
allow dhcpc_t self:netlink_route_socket { create_socket_perms nlmsg_read };

allow dhcpc_t dhcp_etc_t:dir r_dir_perms;
allow dhcpc_t dhcp_etc_t:lnk_file r_file_perms;
allow dhcpc_t dhcp_etc_t:file { r_file_perms execute execute_no_trans };

allow dhcpc_t dhcp_state_t:dir rw_dir_perms;
allow dhcpc_t dhcp_state_t:file { getattr read };
allow dhcpc_t dhcpc_state_t:dir rw_dir_perms;
allow dhcpc_t dhcpc_state_t:file create_file_perms;
type_transition dhcpc_t dhcp_state_t:file dhcpc_state_t;

# create pid file
allow dhcpc_t dhcpc_var_run_t:file create_file_perms;
allow dhcpc_t dhcpc_var_run_t:dir rw_dir_perms;
files_pid_filetrans(dhcpc_t,dhcpc_var_run_t,file)

# Allow read/write to /etc/resolv.conf and /etc/ntp.conf. Note that any files
# in /etc created by dhcpcd will be labelled net_conf_t.
allow dhcpc_t net_conf_t:file create_file_perms;
files_etc_filetrans(dhcpc_t,net_conf_t,file)

# create temp files
allow dhcpc_t dhcpc_tmp_t:dir create_dir_perms;
allow dhcpc_t dhcpc_tmp_t:file create_file_perms;
files_tmp_filetrans(dhcpc_t, dhcpc_tmp_t, { file dir })

can_exec(dhcpc_t, dhcpc_exec_t)

# transition to ifconfig
domain_auto_trans(dhcpc_t, ifconfig_exec_t, ifconfig_t)
allow dhcpc_t ifconfig_t:fd use;
allow ifconfig_t dhcpc_t:fd use;
allow ifconfig_t dhcpc_t:fifo_file rw_file_perms;
allow ifconfig_t dhcpc_t:process sigchld;

kernel_read_system_state(dhcpc_t)
kernel_read_network_state(dhcpc_t)
kernel_read_kernel_sysctls(dhcpc_t)
kernel_use_fds(dhcpc_t)

corenet_non_ipsec_sendrecv(dhcpc_t)
corenet_tcp_sendrecv_all_if(dhcpc_t)
corenet_raw_sendrecv_all_if(dhcpc_t)
corenet_udp_sendrecv_all_if(dhcpc_t)
corenet_tcp_sendrecv_all_nodes(dhcpc_t)
corenet_raw_sendrecv_all_nodes(dhcpc_t)
corenet_udp_sendrecv_all_nodes(dhcpc_t)
corenet_tcp_sendrecv_all_ports(dhcpc_t)
corenet_udp_sendrecv_all_ports(dhcpc_t)
corenet_tcp_bind_all_nodes(dhcpc_t)
corenet_udp_bind_all_nodes(dhcpc_t)
corenet_udp_bind_dhcpc_port(dhcpc_t)
corenet_tcp_connect_all_ports(dhcpc_t)
corenet_sendrecv_dhcpd_client_packets(dhcpc_t)
corenet_sendrecv_dhcpc_server_packets(dhcpc_t)

dev_read_sysfs(dhcpc_t)
# for SSP:
dev_read_urand(dhcpc_t)

fs_getattr_all_fs(dhcpc_t)
fs_search_auto_mountpoints(dhcpc_t)

term_dontaudit_use_console(dhcpc_t)
term_dontaudit_use_all_user_ttys(dhcpc_t)
term_dontaudit_use_all_user_ptys(dhcpc_t)
term_dontaudit_use_unallocated_ttys(dhcpc_t)
term_dontaudit_use_generic_ptys(dhcpc_t)

corecmd_exec_bin(dhcpc_t)
corecmd_exec_sbin(dhcpc_t)
corecmd_exec_shell(dhcpc_t)

domain_use_interactive_fds(dhcpc_t)
domain_dontaudit_list_all_domains_state(dhcpc_t)

files_read_etc_files(dhcpc_t)
files_read_etc_runtime_files(dhcpc_t)
files_search_home(dhcpc_t)
files_search_var_lib(dhcpc_t)
files_dontaudit_search_locks(dhcpc_t)

init_use_fds(dhcpc_t)
init_use_script_ptys(dhcpc_t)
init_rw_utmp(dhcpc_t)

logging_send_syslog_msg(dhcpc_t)

libs_use_ld_so(dhcpc_t)
libs_use_shared_libs(dhcpc_t)

miscfiles_read_localization(dhcpc_t)

modutils_domtrans_insmod(dhcpc_t)

userdom_dontaudit_search_staff_home_dirs(dhcpc_t)

ifdef(`distro_redhat', `
	files_exec_etc_files(dhcpc_t)
')

ifdef(`targeted_policy', `
	term_dontaudit_use_unallocated_ttys(dhcpc_t)
	term_dontaudit_use_generic_ptys(dhcpc_t)
	files_dontaudit_read_root_files(dhcpc_t)
')

optional_policy(`
	consoletype_domtrans(dhcpc_t)
')

optional_policy(`
	gen_require(`
		class dbus send_msg;
	')

	allow dhcpc_t self:dbus send_msg;

	init_dbus_chat_script(dhcpc_t)

	dbus_system_bus_client_template(dhcpc,dhcpc_t)
	dbus_connect_system_bus(dhcpc_t)
	dbus_send_system_bus(dhcpc_t)

	optional_policy(`
		networkmanager_dbus_chat(dhcpc_t)
	')
')

optional_policy(`
	hostname_domtrans(dhcpc_t)
')

optional_policy(`
	hotplug_getattr_config_dirs(dhcpc_t)
	hotplug_search_config(dhcpc_t)

	ifdef(`distro_redhat',`
		logging_domtrans_syslog(dhcpc_t)
	')
')

# for the dhcp client to run ping to check IP addresses
optional_policy(`
	netutils_domtrans_ping(dhcpc_t)
	netutils_domtrans(dhcpc_t)
',`
	allow dhcpc_t self:capability setuid;
	allow dhcpc_t self:rawip_socket create_socket_perms;
')

optional_policy(`
	nis_use_ypbind(dhcpc_t)
	nis_signal_ypbind(dhcpc_t)
	nis_read_ypbind_pid(dhcpc_t)
	nis_delete_ypbind_pid(dhcpc_t)

	# dhclient sometimes starts ypbind
	init_exec_script_files(dhcpc_t)
	nis_domtrans_ypbind(dhcpc_t)
')

optional_policy(`
	nscd_domtrans(dhcpc_t)
	nscd_read_pid(dhcpc_t)
')

optional_policy(`
	# dhclient sometimes starts ntpd
	init_exec_script_files(dhcpc_t)
	ntp_domtrans(dhcpc_t)
')

optional_policy(`
	pcmcia_stub(dhcpc_t)
	dev_rw_cardmgr(dhcpc_t)
')

optional_policy(`
	seutil_sigchld_newrole(dhcpc_t)
	seutil_dontaudit_search_config(dhcpc_t)
')

optional_policy(`
	udev_read_db(dhcpc_t)
')

optional_policy(`
	userdom_use_all_users_fds(dhcpc_t)
')

optional_policy(`
	kernel_read_xen_state(dhcpc_t)
	kernel_write_xen_state(dhcpc_t)
	xen_append_log(dhcpc_t)
	xen_dontaudit_rw_unix_stream_sockets(dhcpc_t)
')

########################################
#
# Ifconfig local policy
#

allow ifconfig_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execheap execstack };
allow ifconfig_t self:capability { net_raw net_admin sys_tty_config };
dontaudit ifconfig_t self:capability sys_module;

allow ifconfig_t self:fd use;
allow ifconfig_t self:fifo_file rw_file_perms;
allow ifconfig_t self:sock_file r_file_perms;
allow ifconfig_t self:socket create_socket_perms;
allow ifconfig_t self:unix_dgram_socket create_socket_perms;
allow ifconfig_t self:unix_stream_socket create_stream_socket_perms;
allow ifconfig_t self:unix_dgram_socket sendto;
allow ifconfig_t self:unix_stream_socket connectto;
allow ifconfig_t self:shm create_shm_perms;
allow ifconfig_t self:sem create_sem_perms;
allow ifconfig_t self:msgq create_msgq_perms;
allow ifconfig_t self:msg { send receive };

# Create UDP sockets, necessary when called from dhcpc
allow ifconfig_t self:udp_socket create_socket_perms;

# for /sbin/ip
allow ifconfig_t self:packet_socket create_socket_perms;
allow ifconfig_t self:netlink_route_socket create_netlink_socket_perms;
allow ifconfig_t self:netlink_xfrm_socket { create_netlink_socket_perms nlmsg_read };
allow ifconfig_t self:tcp_socket { create ioctl };
files_read_etc_files(ifconfig_t);

kernel_use_fds(ifconfig_t)
kernel_read_system_state(ifconfig_t)
kernel_read_network_state(ifconfig_t)
kernel_search_network_sysctl(ifconfig_t)
kernel_rw_net_sysctls(ifconfig_t)

corenet_rw_tun_tap_dev(ifconfig_t)

dev_read_sysfs(ifconfig_t)
# for IPSEC setup:
dev_read_urand(ifconfig_t)

fs_getattr_xattr_fs(ifconfig_t)
fs_search_auto_mountpoints(ifconfig_t)

term_dontaudit_use_all_user_ttys(ifconfig_t)
term_dontaudit_use_all_user_ptys(ifconfig_t)

domain_use_interactive_fds(ifconfig_t)

files_dontaudit_read_root_files(ifconfig_t)

init_use_fds(ifconfig_t)
init_use_script_ptys(ifconfig_t)

libs_use_ld_so(ifconfig_t)
libs_use_shared_libs(ifconfig_t)
libs_read_lib_files(ifconfig_t)

logging_send_syslog_msg(ifconfig_t)

miscfiles_read_localization(ifconfig_t)

modutils_domtrans_insmod(ifconfig_t)

seutil_use_runinit_fds(ifconfig_t)

userdom_use_all_users_fds(ifconfig_t)

ifdef(`hide_broken_symptoms',`
	optional_policy(`
		dev_dontaudit_rw_cardmgr(ifconfig_t)
	')

	optional_policy(`
		udev_dontaudit_rw_dgram_sockets(ifconfig_t)
	')
')

ifdef(`targeted_policy',`
	term_use_generic_ptys(ifconfig_t)
	term_use_unallocated_ttys(ifconfig_t)
')

optional_policy(`
	netutils_domtrans(dhcpc_t)
')

optional_policy(`
	nis_use_ypbind(ifconfig_t)
')

optional_policy(`
	ppp_use_fds(ifconfig_t)
')

optional_policy(`
	kernel_read_xen_state(ifconfig_t)
	kernel_write_xen_state(ifconfig_t)
	xen_append_log(ifconfig_t)
	xen_dontaudit_rw_unix_stream_sockets(ifconfig_t)
')