454 lines
13 KiB
Plaintext
454 lines
13 KiB
Plaintext
# Copyright (C) 2005 Tresys Technology, LLC
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policy_module(init,1.0)
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#
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# init_t is the domain of the init process.
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#
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type init_t;
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domain_make_domain(init_t)
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role system_r types init_t;
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#
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# init_exec_t is the type of the init program.
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#
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type init_exec_t;
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domain_make_entrypoint_file(init_t,init_exec_t)
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#
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# initctl_t is the type of the named pipe created
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# by init during initialization. This pipe is used
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# to communicate with init.
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#
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type initctl_t;
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files_make_file(initctl_t)
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filesystem_tmpfs_associate(initctl_t)
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devices_create_dev_entry(init_t,initctl_t,fifo_file)
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#
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# init_var_run_t is the type for /var/run/shutdown.pid.
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#
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type init_var_run_t;
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files_make_file(init_var_run_t)
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files_create_daemon_runtime_data(init_t,init_var_run_t)
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type initrc_t;
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domain_make_domain(initrc_t)
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role system_r types initrc_t;
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type initrc_exec_t;
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domain_make_entrypoint_file(initrc_t,initrc_exec_t)
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type initrc_devpts_t;
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filesystem_associate(initrc_devpts_t)
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filesystem_noxattr_associate(initrc_devpts_t)
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terminal_make_pseudoterminal(initrc_t,initrc_devpts_t)
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type initrc_var_run_t;
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files_make_file(initrc_var_run_t)
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files_create_daemon_runtime_data(initrc_t,initrc_var_run_t)
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type initrc_state_t;
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files_make_file(initrc_state_t)
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type initrc_tmp_t;
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files_make_file(initrc_tmp_t)
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files_create_private_tmp_data(initrc_t,initrc_tmp_t)
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type run_init_t;
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domain_make_domain(run_init_t)
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type run_init_exec_t;
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files_make_file(run_init_exec_t)
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########################################
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#
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# Init local policy
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#
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# Re-exec itself
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allow init_t init_exec_t:file { getattr read execute execute_no_trans };
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# For /var/run/shutdown.pid.
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allow init_t init_var_run_t:file { create getattr read append write setattr unlink };
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# Run init scripts. this is ok since initrc
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# is also in this module
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allow init_t initrc_t:process transition;
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allow init_t initrc_exec_t:file { getattr read execute };
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allow init_t self:fifo_file { read write ioctl };
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kernel_transition_from(init_t,init_exec_t)
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kernel_sigchld_from(init_t)
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# If you load a new policy that removes active domains, processes can
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# get stuck if you do not allow unlabeled processes to signal init
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# If you load an incompatible policy, you should probably reboot,
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# since you may have compromised system security.
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kernel_unlabeled_sigchld_from(init_t)
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kernel_set_selinux_boolean(init_t)
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kernel_read_system_state(init_t)
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kernel_read_hardware_state(init_t)
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kernel_share_state(init_t)
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terminal_use_all_terminals(init_t)
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domain_signal_all_domains(init_t)
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domain_kill_all_domains(init_t)
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domain_all_init_domains_transition(init_t)
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files_modify_system_runtime_data(init_t)
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# file descriptors inherited from the rootfs.
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files_ignore_modify_rootfs_file(init_t)
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files_ignore_modify_rootfs_device(init_t)
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libraries_use_dynamic_loader(init_t)
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libraries_read_shared_libraries(init_t)
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corecommands_chroot(init_t)
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corecommands_execute_general_programs(init_t)
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corecommands_execute_system_programs(init_t)
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logging_send_system_log_message(init_t)
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selinux_read_config(init_t)
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miscfiles_read_localization(init_t)
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########################################
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#
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# the following seem questionable
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#
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libraries_modify_dynamic_loader_cache(init_t)
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files_create_runtime_system_config(init_t)
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authlogin_modify_login_records(init_t)
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logging_modify_system_logs(init_t)
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# Use capabilities. old rule:
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allow init_t self:capability ~sys_module;
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# is ~sys_module really needed? observed:
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# sys_boot
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# sys_tty_config
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# kill: now provided by domain_kill_all_domains()
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# setuid (from /sbin/shutdown)
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# sys_chroot (from /usr/bin/chroot): now provided by corecommands_chroot()
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# Modify utmp.
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allow init_t initrc_var_run_t:file { getattr read write setattr };
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optional_policy(`consoletype.te',`
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consoletype_execute(init_t,optional)
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')
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########################################
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#
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# the following still need to be converted over
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#
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# something other then static libs
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allow init_t lib_t:file { getattr read };
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# for mount points
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allow init_t file_t:dir search;
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########################################
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#
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# Init script local policy
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#
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allow initrc_t self:process { getpgid setsched setpgid setrlimit getsched };
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allow initrc_t self:capability ~{ sys_admin sys_module };
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allow initrc_t self:passwd rootok;
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# Allow IPC with self
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allow initrc_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown };
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allow initrc_t self:unix_stream_socket { create listen accept ioctl read getattr write setattr append bind connect getopt setopt shutdown connectto };
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allow initrc_t self:fifo_file { read write ioctl };
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allow initrc_t self:netlink_route_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown nlmsg_read };
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allow initrc_t initrc_state_t:dir { create read getattr lock setattr ioctl unlink rename search add_name remove_name reparent write rmdir };
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allow initrc_t initrc_state_t:file { create ioctl read getattr lock write setattr append link unlink rename };
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allow initrc_t initrc_state_t:lnk_file { create read getattr setattr unlink rename };
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allow initrc_t self:tcp_socket { connect listen accept create ioctl read getattr write setattr append bind getopt setopt shutdown };
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allow initrc_t self:udp_socket { connect create ioctl read getattr write setattr append bind getopt setopt shutdown };
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kernel_read_system_state(initrc_t)
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kernel_read_software_raid_state(initrc_t)
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kernel_read_network_state(initrc_t)
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kernel_read_ring_buffer(initrc_t)
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kernel_change_ring_buffer_level(initrc_t)
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kernel_clear_ring_buffer(initrc_t)
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kernel_get_sysvipc_info(initrc_t)
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kernel_read_hardware_state(initrc_t)
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kernel_modify_hardware_config_option(initrc_t)
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kernel_read_all_sysctl(initrc_t)
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kernel_modify_all_sysctl(initrc_t)
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kernel_get_selinux_enforcement_mode(initrc_t)
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kernel_list_usb_hardware(initrc_t)
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filesystem_register_binary_executable_type(initrc_t)
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# cjp: not sure why these are here; should use mount policy
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filesystem_mount_all_filesystems(initrc_t)
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filesystem_unmount_all_filesystems(initrc_t)
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filesystem_remount_all_filesystems(initrc_t)
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filesystem_get_all_filesystems_attributes(initrc_t)
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corenetwork_network_tcp_on_all_interfaces(initrc_t)
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corenetwork_network_raw_on_all_interfaces(initrc_t)
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corenetwork_network_udp_on_all_interfaces(initrc_t)
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corenetwork_network_tcp_on_all_nodes(initrc_t)
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corenetwork_network_raw_on_all_nodes(initrc_t)
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corenetwork_network_udp_on_all_nodes(initrc_t)
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corenetwork_network_tcp_on_all_ports(initrc_t)
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corenetwork_network_udp_on_all_ports(initrc_t)
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corenetwork_bind_tcp_on_all_nodes(initrc_t)
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corenetwork_bind_udp_on_all_nodes(initrc_t)
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domain_kill_all_domains(initrc_t)
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domain_read_all_domains_process_state(initrc_t)
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domain_all_daemon_domains_transition(initrc_t)
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devices_get_random_data(initrc_t)
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devices_get_pseudorandom_data(initrc_t)
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devices_add_entropy(initrc_t)
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devices_set_pseudorandom_seed(initrc_t)
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devices_read_framebuffer(initrc_t)
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devices_read_realtime_clock(initrc_t)
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devices_read_sound_mixer_levels(initrc_t)
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devices_write_sound_mixer_levels(initrc_t)
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devices_set_all_character_device_attributes(initrc_t)
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storage_get_fixed_disk_attributes(initrc_t)
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storage_set_fixed_disk_attributes(initrc_t)
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storage_set_removable_device_attributes(initrc_t)
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terminal_use_all_terminals(initrc_t)
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terminal_reset_physical_terminal_labels(initrc_t)
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bootloader_read_kernel_symbol_table(initrc_t)
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domain_use_widely_inheritable_file_descriptors(initrc_t)
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libraries_modify_dynamic_loader_cache(initrc_t)
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libraries_use_dynamic_loader(initrc_t)
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libraries_read_shared_libraries(initrc_t)
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libraries_execute_library_scripts(initrc_t)
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files_get_all_file_attributes(initrc_t)
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files_remove_all_tmp_data(initrc_t)
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files_remove_all_lock_files(initrc_t)
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files_remove_all_daemon_runtime_data(initrc_t)
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files_read_general_system_config(initrc_t)
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files_create_runtime_system_config(initrc_t)
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files_manage_system_lock_files(initrc_t)
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files_execute_system_config_script(initrc_t)
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files_read_general_shared_resources(initrc_t)
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files_manage_pseudorandom_saved_seed(initrc_t)
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corecommands_execute_general_programs(initrc_t)
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corecommands_execute_system_programs(initrc_t)
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corecommands_execute_shell(initrc_t)
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logging_send_system_log_message(initrc_t)
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selinux_read_config(initrc_t)
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sysnetwork_read_network_config(initrc_t)
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modutils_read_kernel_module_loading_config(initrc_t)
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authlogin_modify_login_records(initrc_t)
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authlogin_modify_last_login_log(initrc_t)
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miscfiles_read_localization(initrc_t)
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logging_modify_system_logs(initrc_t)
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logging_read_all_logs(initrc_t)
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logging_append_all_logs(initrc_t)
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optional_policy(`consoletype.te',`
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consoletype_transition(initrc_t)
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')
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tunable_policy(`distro_redhat',`
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kernel_set_selinux_enforcement_mode(initrc_t)
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files_create_boot_flag(initrc_t)
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# Create and read /boot/kernel.h and /boot/System.map.
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# Redhat systems typically create this file at boot time.
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bootloader_create_runtime_data(initrc_t)
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')
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ifdef(`TODO',`
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# Mount and unmount file systems.
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allow initrc_t { file_t default_t }:dir { read search getattr mounton };
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allow initrc_t var_spool_t:file rw_file_perms;
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# Set device ownerships/modes.
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allow initrc_t xconsole_device_t:fifo_file setattr;
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# Allow access to the sysadm TTYs. Note that this will give access to the
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# TTYs to any process in the initrc_t domain. Therefore, daemons and such
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# started from init should be placed in their own domain.
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allow initrc_t admin_tty_type:chr_file rw_file_perms;
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# Read user home directories.
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allow initrc_t { home_root_t home_type }:dir r_dir_perms;
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allow initrc_t home_type:file r_file_perms;
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allow initrc_t udev_runtime_t:file rw_file_perms;
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# for lsof in shutdown scripts
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optional_policy(`kerberos.te',`
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if (allow_kerberos) {
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can_network_client(initrc_t, `kerberos_port_t')
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can_resolve(initrc_t)
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}
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') dnl kerberos.te
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dontaudit initrc_t krb5_conf_t:file write;
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allow initrc_t krb5_conf_t:file { getattr read };
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#
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# Wants to remove udev.tbl
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#
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allow initrc_t device_t:dir rw_dir_perms;
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allow initrc_t device_t:lnk_file unlink;
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#
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# These rules are here to allow init scripts to su
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#
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optional_policy(`su.te', `
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su_restricted_domain(initrc,system)
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role system_r types initrc_su_t;
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')
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tunable_policy(`distro_debian', `
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allow initrc_t { etc_t device_t }:dir setattr;
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# for storing state under /dev/shm
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allow initrc_t tmpfs_t:dir setattr;
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file_type_auto_trans(initrc_t, tmpfs_t, initrc_var_run_t, dir)
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file_type_auto_trans(initrc_t, tmpfs_t, fixed_disk_device_t, blk_file)
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allow { initrc_var_run_t fixed_disk_device_t } tmpfs_t:filesystem associate;
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')dnl end distro_debian
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tunable_policy(`distro_redhat', `
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# Create and read /boot/kernel.h and /boot/System.map.
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# Redhat systems typically create this file at boot time.
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allow initrc_t boot_t:lnk_file rw_file_perms;
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allow initrc_t tmpfs_t:chr_file rw_file_perms;
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allow initrc_t tmpfs_t:dir r_dir_perms;
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#
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# readahead asks for these
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#
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allow initrc_t etc_aliases_t:file { getattr read };
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allow initrc_t var_lib_nfs_t:file { getattr read };
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')dnl end distro_redhat
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#
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# Shutting down xinet causes these
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#
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# Fam
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dontaudit initrc_t device_t:dir { read write };
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# Rsync
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dontaudit initrc_t mail_spool_t:lnk_file read;
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# for lsof which is used by alsa shutdown
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dontaudit initrc_t domain:{ udp_socket tcp_socket fifo_file unix_dgram_socket } getattr;
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dontaudit initrc_t proc_kmsg_t:file getattr;
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') dnl end TODO
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#################################
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#
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# Run_init local policy
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#
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tunable_policy(`targeted_policy',`
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# targeted/unconfined stuff
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',`
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corecommands_execute_general_programs(run_init_t)
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corecommands_execute_shell(run_init_t)
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filesystem_get_persistent_filesystem_attributes(run_init_t)
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files_read_general_system_config(run_init_t)
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libraries_use_dynamic_loader(run_init_t)
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libraries_read_shared_libraries(run_init_t)
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selinux_read_config(run_init_t)
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selinux_read_default_contexts(run_init_t)
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authlogin_ignore_read_shadow_passwords(run_init_t)
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miscfiles_read_localization(run_init_t)
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logging_send_system_log_message(run_init_t)
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allow run_init_t initrc_t:process transition;
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allow run_init_t initrc_exec_t:file { getattr read execute };
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# for utmp
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allow run_init_t initrc_var_run_t:file { getattr read write };
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allow run_init_t self:process setexec;
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allow run_init_t self:capability setuid;
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allow run_init_t self:fifo_file { getattr read write };
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# often the administrator runs such programs from a directory that is owned
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# by a different user or has restrictive SE permissions, do not want to audit
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# the failed access to the current directory
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dontaudit run_init_t self:capability { dac_override dac_read_search };
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devices_ignore_list_device_nodes(run_init_t)
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terminal_ignore_list_pseudoterminals(run_init_t)
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# often the administrator runs such programs from a directory that is owned
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# by a different user or has restrictive SE permissions, do not want to audit
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# the failed access to the current directory
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files_ignore_search_all_directories(run_init_t)
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') dnl end ifdef targeted policy
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ifdef(`TODO',`
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tunable_policy(`targeted_policy', `
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domain_auto_trans(unconfined_t, initrc_exec_t, initrc_t)
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allow unconfined_t initrc_t:dbus { acquire_svc send_msg };
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allow initrc_t unconfined_t:dbus { acquire_svc send_msg };
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domain_trans(initrc_t, shell_exec_t, unconfined_t)
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', `
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domain_auto_trans(sysadm_t, run_init_exec_t, run_init_t)
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role sysadm_r types run_init_t;
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domain_auto_trans(run_init_t, chkpwd_exec_t, sysadm_chkpwd_t)
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# for utmp
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allow run_init_t admin_tty_type:chr_file rw_file_perms;
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allow run_init_t privfd:fd use;
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allow run_init_t lib_t:file { getattr read };
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') dnl endif targeted policy
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tunable_policy(`distro_gentoo', `
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# Gentoo integrated run_init+open_init_pty-runscript:
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domain_auto_trans(sysadm_t,initrc_exec_t,run_init_t)
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')
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') dnl end TODO
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