debian-selinux-policies/policy/modules/udev.te

policy_module(udev, 1.17.5)

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

type udev_t;
type udev_exec_t;
type udev_helper_exec_t;
kernel_domtrans_to(udev_t, udev_exec_t)
domain_obj_id_change_exemption(udev_t)
domain_entry_file(udev_t, udev_helper_exec_t)
domain_interactive_fd(udev_t)
init_daemon_domain(udev_t, udev_exec_t)

type udev_etc_t alias etc_udev_t;
files_config_file(udev_etc_t)

type udev_tbl_t alias udev_tdb_t;
files_type(udev_tbl_t)

type udev_rules_t;
files_type(udev_rules_t)

type udev_var_run_t;
files_pid_file(udev_var_run_t)
init_daemon_run_dir(udev_var_run_t, "udev")

ifdef(`enable_mcs',`
	kernel_ranged_domtrans_to(udev_t, udev_exec_t, s0 - mcs_systemhigh)
	init_ranged_daemon_domain(udev_t, udev_exec_t, s0 - mcs_systemhigh)
')

########################################
#
# Local policy
#

allow udev_t self:capability { chown dac_override dac_read_search fowner fsetid sys_admin mknod net_raw net_admin sys_nice sys_rawio sys_resource setuid setgid sys_nice sys_ptrace };
dontaudit udev_t self:capability sys_tty_config;
allow udev_t self:capability2 block_suspend;
allow udev_t self:process ~{ setcurrent setexec setfscreate setrlimit execmem execstack execheap };
allow udev_t self:process { execmem setfscreate };
allow udev_t self:fd use;
allow udev_t self:fifo_file rw_fifo_file_perms;
allow udev_t self:sock_file read_sock_file_perms;
allow udev_t self:shm create_shm_perms;
allow udev_t self:sem create_sem_perms;
allow udev_t self:msgq create_msgq_perms;
allow udev_t self:msg { send receive };
allow udev_t self:unix_stream_socket { listen accept };
allow udev_t self:unix_dgram_socket sendto;
allow udev_t self:unix_stream_socket connectto;
allow udev_t self:netlink_kobject_uevent_socket create_socket_perms;
allow udev_t self:rawip_socket create_socket_perms;
fs_read_cgroup_files(udev_t)

# for systemd-udevd to rename interfaces
allow udev_t self:netlink_route_socket nlmsg_write;

allow udev_t udev_exec_t:file write;
can_exec(udev_t, udev_exec_t)

allow udev_t udev_helper_exec_t:dir list_dir_perms;
can_exec(udev_t, udev_helper_exec_t)

# read udev config
allow udev_t udev_etc_t:file read_file_perms;

allow udev_t udev_tbl_t:file manage_file_perms;
dev_filetrans(udev_t, udev_tbl_t, file)

list_dirs_pattern(udev_t, udev_rules_t, udev_rules_t)
manage_files_pattern(udev_t, udev_rules_t, udev_rules_t)
manage_lnk_files_pattern(udev_t, udev_rules_t, udev_rules_t)

manage_dirs_pattern(udev_t, udev_var_run_t, udev_var_run_t)
manage_files_pattern(udev_t, udev_var_run_t, udev_var_run_t)
manage_lnk_files_pattern(udev_t, udev_var_run_t, udev_var_run_t)
manage_sock_files_pattern(udev_t, udev_var_run_t, udev_var_run_t)
files_pid_filetrans(udev_t, udev_var_run_t, dir, "udev")

kernel_read_system_state(udev_t)
kernel_request_load_module(udev_t)
modutils_read_module_objects(udev_t)

# systemd-udevd needs kernel_load_module and files_read_kernel_modules
kernel_load_module(udev_t)
files_read_kernel_modules(udev_t)
# systemd-udevd searches /run/systemd
init_search_pid_dirs(udev_t)
# for hdparm init script run by udev
initrc_service_status(udev_t)

kernel_getattr_core_if(udev_t)
kernel_use_fds(udev_t)
kernel_read_device_sysctls(udev_t)
kernel_read_hotplug_sysctls(udev_t)
kernel_read_modprobe_sysctls(udev_t)
kernel_read_kernel_sysctls(udev_t)
kernel_rw_hotplug_sysctls(udev_t)
kernel_rw_unix_dgram_sockets(udev_t)
kernel_dgram_send(udev_t)
kernel_signal(udev_t)
kernel_search_debugfs(udev_t)

#https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=235182
kernel_rw_net_sysctls(udev_t)
kernel_read_network_state(udev_t)
kernel_read_software_raid_state(udev_t)
kernel_dontaudit_search_unlabeled(udev_t)

corecmd_exec_all_executables(udev_t)

dev_rw_sysfs(udev_t)
dev_manage_all_dev_nodes(udev_t)
dev_rw_generic_files(udev_t)
dev_delete_generic_files(udev_t)
dev_search_usbfs(udev_t)
dev_relabel_all_dev_nodes(udev_t)
# udev_node.c/node_symlink() symlink labels are explicitly
# preserved, instead of short circuiting the relabel
dev_relabel_generic_symlinks(udev_t)
dev_manage_generic_symlinks(udev_t)

domain_read_all_domains_state(udev_t)
domain_dontaudit_ptrace_all_domains(udev_t) #pidof triggers these

files_read_usr_files(udev_t)
files_read_etc_runtime_files(udev_t)
files_read_etc_files(udev_t)
files_exec_etc_files(udev_t)
files_getattr_generic_locks(udev_t)
files_search_mnt(udev_t)

fs_getattr_all_fs(udev_t)
fs_list_inotifyfs(udev_t)
fs_rw_anon_inodefs_files(udev_t)

mcs_ptrace_all(udev_t)

mls_file_read_all_levels(udev_t)
mls_file_write_all_levels(udev_t)
mls_file_upgrade(udev_t)
mls_file_downgrade(udev_t)
mls_process_write_down(udev_t)

selinux_get_fs_mount(udev_t)
selinux_validate_context(udev_t)
selinux_compute_access_vector(udev_t)
selinux_compute_create_context(udev_t)
selinux_compute_relabel_context(udev_t)
selinux_compute_user_contexts(udev_t)

auth_read_pam_console_data(udev_t)
auth_domtrans_pam_console(udev_t)
auth_use_nsswitch(udev_t)

init_read_utmp(udev_t)
init_dontaudit_write_utmp(udev_t)
init_getattr_initctl(udev_t)

logging_search_logs(udev_t)
logging_send_syslog_msg(udev_t)
logging_send_audit_msgs(udev_t)

miscfiles_read_localization(udev_t)
miscfiles_read_hwdata(udev_t)

modutils_domtrans_insmod(udev_t)
modutils_read_module_config(udev_t)
# read modules.inputmap:
modutils_read_module_deps(udev_t)

seutil_read_config(udev_t)
seutil_read_default_contexts(udev_t)
seutil_read_file_contexts(udev_t)
seutil_domtrans_setfiles(udev_t)

sysnet_domtrans_ifconfig(udev_t)
sysnet_domtrans_dhcpc(udev_t)
sysnet_rw_dhcp_config(udev_t)
sysnet_read_dhcpc_pid(udev_t)
sysnet_delete_dhcpc_pid(udev_t)
sysnet_signal_dhcpc(udev_t)
sysnet_manage_config(udev_t)
sysnet_etc_filetrans_config(udev_t)

systemd_login_read_pid_files(udev_t)

userdom_dontaudit_search_user_home_content(udev_t)

ifdef(`distro_debian',`
	files_pid_filetrans(udev_t, udev_var_run_t, dir, "xen-hotplug")

	optional_policy(`
		# for /usr/lib/avahi/avahi-daemon-check-dns.sh
		kernel_read_vm_sysctls(udev_t)
		corenet_udp_bind_generic_node(udev_t)
		miscfiles_read_generic_certs(udev_t)
		avahi_create_pid_dirs(udev_t)
		avahi_initrc_domtrans(udev_t)
		avahi_manage_pid_files(udev_t)
		avahi_setattr_pid_dirs(udev_t)
		avahi_filetrans_pid(udev_t, dir, "avahi-daemon")
	')
')

optional_policy(`
	# for systemd-udevd when starting xen domu
	virt_read_config(udev_t)
')

ifdef(`distro_gentoo',`
	# during boot, init scripts use /dev/.rcsysinit
	# existance to determine if we are in early booting
	init_getattr_script_status_files(udev_t)
')

ifdef(`distro_redhat',`
	fs_manage_tmpfs_dirs(udev_t)
	fs_manage_tmpfs_files(udev_t)
	fs_manage_tmpfs_symlinks(udev_t)
	fs_manage_tmpfs_sockets(udev_t)
	fs_manage_tmpfs_blk_files(udev_t)
	fs_manage_tmpfs_chr_files(udev_t)
	fs_relabel_tmpfs_blk_file(udev_t)
	fs_relabel_tmpfs_chr_file(udev_t)

	term_search_ptys(udev_t)

	# for arping used for static IP addresses on PCMCIA ethernet
	netutils_domtrans(udev_t)

	optional_policy(`
		unconfined_domain(udev_t)
	')
')

optional_policy(`
	alsa_domtrans(udev_t)
	alsa_read_lib(udev_t)
	alsa_read_rw_config(udev_t)
')

optional_policy(`
	bluetooth_domtrans(udev_t)
')

optional_policy(`
	brctl_domtrans(udev_t)
')

optional_policy(`
	clock_domtrans(udev_t)
')

optional_policy(`
	consoletype_exec(udev_t)
')

optional_policy(`
	consolekit_read_pid_files(udev_t)
')

optional_policy(`
	cups_domtrans_config(udev_t)
')

optional_policy(`
	dbus_system_bus_client(udev_t)
	dbus_use_system_bus_fds(udev_t)

	optional_policy(`
		consolekit_dbus_chat(udev_t)
	')
')

optional_policy(`
	devicekit_read_pid_files(udev_t)
	devicekit_dgram_send(udev_t)
')

optional_policy(`
	lvm_domtrans(udev_t)
')

optional_policy(`
	fstools_domtrans(udev_t)
')

optional_policy(`
	hal_dgram_send(udev_t)

	ifdef(`hide_broken_symptoms',`
		hal_dontaudit_rw_dgram_sockets(udev_t)
	')
')

optional_policy(`
	hotplug_read_config(udev_t)
	# usb.agent searches /var/run/usb
	hotplug_search_pids(udev_t)
')

optional_policy(`
	lvm_domtrans(udev_t)
')

optional_policy(`
	mount_domtrans(udev_t)
')

optional_policy(`
	openct_read_pid_files(udev_t)
	openct_domtrans(udev_t)
')

optional_policy(`
	pcscd_read_pid_files(udev_t)
	pcscd_domtrans(udev_t)
')

optional_policy(`
	raid_domtrans_mdadm(udev_t)
')

optional_policy(`
	unconfined_signal(udev_t)
')

optional_policy(`
	vbetool_domtrans(udev_t)
')

optional_policy(`
	kernel_write_xen_state(udev_t)
	kernel_read_xen_state(udev_t)
	xen_manage_log(udev_t)
	xen_read_image_files(udev_t)
	fs_manage_xenfs_files(udev_t)
')

optional_policy(`
	xserver_read_xdm_pid(udev_t)
')

optional_policy(`
	postfix_admin(udev_t, system_r)
')

optional_policy(`
	gen_require(`
		type udev_t;
		type ndc_exec_t;
		type ndc_t;
		')
	domain_auto_trans(udev_t, ndc_exec_t, ndc_t)
')

optional_policy(`
	gen_require(`
		type udev_t;
		type sshd_var_run_t;
	')
        ssh_domtrans(udev_t)
	read_files_pattern(udev_t, sshd_var_run_t, sshd_var_run_t)
')