path: root/policy/modules/system/mount.te

policy_module(mount)

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

## <desc>
## <p>
## Allow the mount command to mount any directory or file.
## </p>
## </desc>
gen_tunable(allow_mount_anyfile, false)

attribute_role mount_roles;
roleattribute system_r mount_roles;

type mount_t;
type mount_exec_t;
init_system_domain(mount_t, mount_exec_t)
role mount_roles types mount_t;

type mount_loopback_t; # customizable
fs_image_file(mount_loopback_t)

type mount_runtime_t;
files_runtime_file(mount_runtime_t)

optional_policy(`
	kubernetes_mountpoint(mount_runtime_t)
')

type mount_tmp_t;
files_tmp_file(mount_tmp_t)

# causes problems with interfaces when
# this is optionally declared in monolithic
# policy--duplicate type declaration
type unconfined_mount_t;
application_domain(unconfined_mount_t, mount_exec_t)

########################################
#
# mount local policy
#

# setuid/setgid needed to mount cifs
allow mount_t self:capability { chown dac_override dac_read_search ipc_lock setgid setuid sys_admin sys_rawio sys_tty_config };
dontaudit mount_t self:capability { kill net_admin };
dontaudit mount_t self:process setrlimit;
allow mount_t self:process signal;
# zfs list uses pipes
allow mount_t self:fifo_file rw_fifo_file_perms;

allow mount_t mount_tmp_t:file manage_file_perms;
allow mount_t mount_tmp_t:dir manage_dir_perms;

can_exec(mount_t, mount_exec_t)

files_tmp_filetrans(mount_t, mount_tmp_t, { file dir })

manage_dirs_pattern(mount_t, mount_runtime_t, mount_runtime_t)
manage_files_pattern(mount_t, mount_runtime_t, mount_runtime_t)
rw_files_pattern(mount_t, mount_runtime_t, mount_runtime_t)
files_runtime_filetrans(mount_t, mount_runtime_t, { dir file })

kernel_read_system_state(mount_t)
kernel_read_kernel_sysctls(mount_t)
kernel_setsched(mount_t)
kernel_dontaudit_getattr_core_if(mount_t)
kernel_dontaudit_write_debugfs_dirs(mount_t)
kernel_dontaudit_write_proc_dirs(mount_t)
# To load binfmt_misc kernel module
kernel_request_load_module(mount_t)

# required for mount.smbfs
corecmd_exec_bin(mount_t)

dev_getattr_all_blk_files(mount_t)
dev_list_all_dev_nodes(mount_t)
dev_read_sysfs(mount_t)
dev_dontaudit_write_sysfs_dirs(mount_t)
dev_rw_lvm_control(mount_t)
dev_rw_loop_control(mount_t)
dev_dontaudit_getattr_all_chr_files(mount_t)
dev_dontaudit_getattr_generic_blk_files(mount_t)
dev_dontaudit_getattr_memory_dev(mount_t)
dev_getattr_sound_dev(mount_t)
# Early devtmpfs, before udev relabel
dev_dontaudit_rw_generic_chr_files(mount_t)

domain_use_interactive_fds(mount_t)

files_search_all(mount_t)
files_read_etc_files(mount_t)
files_manage_etc_runtime_files(mount_t)
files_etc_filetrans_etc_runtime(mount_t, file)
files_mounton_all_mountpoints(mount_t)
files_unmount_rootfs(mount_t)
# These rules need to be generalized.  Only admin, initrc should have it:
files_relabelto_all_file_type_fs(mount_t)
files_mount_all_file_type_fs(mount_t)
files_unmount_all_file_type_fs(mount_t)
# For reading cert files
files_read_usr_files(mount_t)
files_list_all_mountpoints(mount_t)
files_dontaudit_write_all_mountpoints(mount_t)
files_dontaudit_setattr_all_mountpoints(mount_t)

fs_getattr_all_fs(mount_t)
fs_getattr_all_dirs(mount_t)
fs_mount_all_fs(mount_t)
fs_unmount_all_fs(mount_t)
fs_remount_all_fs(mount_t)
fs_relabelfrom_all_fs(mount_t)
fs_rw_tmpfs_chr_files(mount_t)
fs_read_tmpfs_symlinks(mount_t)
fs_dontaudit_write_tmpfs_dirs(mount_t)
fs_read_all_image_files(mount_t)
fs_dontaudit_write_all_image_files(mount_t)

mls_file_read_all_levels(mount_t)
mls_file_write_all_levels(mount_t)

selinux_get_enforce_mode(mount_t)

storage_raw_read_fixed_disk(mount_t)
storage_raw_write_fixed_disk(mount_t)
storage_raw_read_removable_device(mount_t)
storage_raw_write_removable_device(mount_t)
storage_rw_fuse(mount_t)

term_use_all_terms(mount_t)
term_dontaudit_manage_pty_dirs(mount_t)
# for a bug in the X server
term_dontaudit_use_ptmx(mount_t)

auth_use_nsswitch(mount_t)

init_use_fds(mount_t)
init_use_script_ptys(mount_t)
init_dontaudit_getattr_initctl(mount_t)
init_dontaudit_read_state(mount_t)
init_dontaudit_write_runtime_socket(mount_t)

logging_send_syslog_msg(mount_t)

miscfiles_read_localization(mount_t)

sysnet_use_portmap(mount_t)

seutil_read_config(mount_t)
selinux_getattr_fs(mount_t)

userdom_use_all_users_fds(mount_t)

ifdef(`distro_redhat',`
	optional_policy(`
		auth_read_pam_console_data(mount_t)
		# mount config by default sets fscontext=removable_t
		fs_relabelfrom_dos_fs(mount_t)
	')
')

ifdef(`distro_ubuntu',`
	optional_policy(`
		unconfined_domain(mount_t)
	')
')

tunable_policy(`allow_mount_anyfile',`
	files_list_non_auth_dirs(mount_t)
	files_read_non_auth_files(mount_t)
	files_mounton_non_security(mount_t)
')

optional_policy(`
	# for nfs
	corenet_all_recvfrom_netlabel(mount_t)
	corenet_tcp_sendrecv_all_if(mount_t)
	corenet_raw_sendrecv_all_if(mount_t)
	corenet_udp_sendrecv_all_if(mount_t)
	corenet_tcp_sendrecv_all_nodes(mount_t)
	corenet_raw_sendrecv_all_nodes(mount_t)
	corenet_udp_sendrecv_all_nodes(mount_t)
	corenet_tcp_bind_all_nodes(mount_t)
	corenet_udp_bind_all_nodes(mount_t)
	corenet_tcp_bind_generic_port(mount_t)
	corenet_udp_bind_generic_port(mount_t)
	corenet_tcp_bind_reserved_port(mount_t)
	corenet_udp_bind_reserved_port(mount_t)
	corenet_tcp_bind_all_rpc_ports(mount_t)
	corenet_udp_bind_all_rpc_ports(mount_t)
	corenet_dontaudit_tcp_bind_all_reserved_ports(mount_t)
	corenet_dontaudit_udp_bind_all_reserved_ports(mount_t)
	corenet_tcp_connect_all_ports(mount_t)

	fs_search_rpc(mount_t)

	rpc_stub(mount_t)
')

optional_policy(`
	acpi_use_fds(mount_t)
')

optional_policy(`
	container_getattr_fs(mount_t)
')

optional_policy(`
	dbus_dontaudit_write_system_bus_runtime_named_sockets(mount_t)
')

optional_policy(`
	glusterfs_domtrans_daemon(mount_t)

	# required for mount.glusterfs
	corecmd_exec_shell(mount_t)
')

optional_policy(`
	# kubelet bind-mounts its own fds into containers
	kubernetes_read_kubelet_state(mount_t)
')

optional_policy(`
	modutils_read_module_deps(mount_t)
')

optional_policy(`
	puppet_rw_tmp(mount_t)
')

optional_policy(`
	rpc_domtrans_rpcd(mount_t)
')

# for kernel package installation
optional_policy(`
	rpm_rw_pipes(mount_t)
')

optional_policy(`
	samba_run_smbmount(mount_t, mount_roles)
')

########################################
#
# Unconfined mount local policy
#

optional_policy(`
	files_etc_filetrans_etc_runtime(unconfined_mount_t, file)
	unconfined_domain(unconfined_mount_t)
')

ifdef(`distro_gentoo',`
	#########################################
	#
	# Mount local policy
	#

	kernel_setsched(mount_t)

	files_relabel_all_file_type_fs(mount_t)

	selinux_get_fs_mount(mount_t)
')