diff --git a/refpolicy/policy/modules/system/lvm.if b/refpolicy/policy/modules/system/lvm.if new file mode 100644 index 0000000..d52cabb --- /dev/null +++ b/refpolicy/policy/modules/system/lvm.if @@ -0,0 +1,35 @@ +# Copyright (C) 2005 Tresys Technology, LLC + +####################################### +# +# lvm_transition(domain) +# +define(`lvm_transition',` +requires_block_template(`$0'_depend) +allow $1 lvm_exec_t:file { getattr read execute }; +allow $1 lvm_t:process transition; +type_transition $1 lvm_exec_t:file lvm_t; +dontaudit $1 lvm_t:process { noatsecure siginh rlimitinh }; +') + +define(`lvm_transition_depend',` +type lvm_t, lvm_exec_t; +class file { getattr read execute }; +class process { transition noatsecure siginh rlimitinh }; +') + +####################################### +# +# lvm_read_config(domain) +# +define(`lvm_read_config',` +requires_block_template(`$0'_depend) +allow $1 lvm_etc_t:dir { getattr search read }; +allow $1 lvm_etc_t:file { getattr read }; +') + +define(`lvm_read_config_depend',` +type lvm_t, lvm_exec_t; +class file { getattr read }; +') + diff --git a/refpolicy/policy/modules/system/lvm.te b/refpolicy/policy/modules/system/lvm.te new file mode 100644 index 0000000..196e78d --- /dev/null +++ b/refpolicy/policy/modules/system/lvm.te @@ -0,0 +1,184 @@ +# Copyright (C) 2005 Tresys Technology, LLC + +policy_module(lvm,1.0) + +######################################## +# +# Declarations +# + +type lvm_t; +type lvm_exec_t; +domain_make_system_domain(lvm_t,lvm_exec_t) +# needs privowner because it assigns the identity system_u to device nodes +# but runs as the identity of the sysadmin +kernel_make_object_identity_change_constraint_exception(lvm_t) +role system_r types lvm_t; + +type lvm_tmp_t; +files_make_temporary_file(lvm_tmp_t) + +type lvm_metadata_t; +files_make_file(lvm_metadata_t) + +type lvm_etc_t; +files_make_file(lvm_etc_t) + +type lvm_lock_t; +files_make_lock_file(lvm_lock_t) + +######################################## +# +# Local policy +# + +# DAC overrides and mknod for modifying /dev entries (vgmknodes) +allow lvm_t self:capability { dac_override ipc_lock sys_admin sys_nice mknod }; +dontaudit lvm_t self:capability sys_tty_config; + +allow lvm_t self:process { sigchld sigkill sigstop signull signal }; +# LVM will complain a lot if it cannot set its priority. +allow lvm_t self:process setsched; + +allow lvm_t self:file { read getattr lock ioctl }; +allow lvm_t self:fifo_file { ioctl read getattr lock write append }; +allow lvm_t self:unix_dgram_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown }; + +allow lvm_t lvm_tmp_t:dir { create read getattr lock setattr ioctl link unlink rename search add_name remove_name reparent write rmdir }; +allow lvm_t lvm_tmp_t:file { create ioctl read getattr lock write setattr append link unlink rename }; +files_create_private_tmp_data(lvm_t, lvm_tmp_t, { file dir }) + +# /lib/lvm- holds the actual LVM binaries (and symlinks) +allow lvm_t lvm_exec_t:dir search; +allow lvm_t lvm_exec_t:{ file lnk_file } { read getattr lock ioctl }; + +# LVM is split into many individual binaries +allow lvm_t lvm_exec_t:file { getattr read execute execute_no_trans }; + +# Creating lock files +allow lvm_t lvm_lock_t:dir { read getattr lock search ioctl add_name remove_name write }; +allow lvm_t lvm_lock_t:file { create ioctl read getattr lock write setattr append link unlink rename }; +files_create_private_lock_file(lvm_t,lvm_lock_t) + +allow lvm_t lvm_etc_t:file { read getattr lock ioctl }; +allow lvm_t lvm_etc_t:lnk_file { getattr read }; +# Write to /etc/lvm, /etc/lvmtab, /etc/lvmtab.d +allow lvm_t lvm_etc_t:dir { read getattr lock search ioctl add_name remove_name write }; +allow lvm_t lvm_metadata_t:file { create ioctl read getattr lock write setattr append link unlink rename }; +allow lvm_t lvm_metadata_t:dir { read getattr lock search ioctl add_name remove_name write }; +type_transition lvm_t lvm_etc_t:file lvm_metadata_t; +files_create_private_config(lvm_t,lvm_metadata_t,file) + +kernel_read_system_state(lvm_t) +kernel_get_selinuxfs_mount_point(lvm_t) +kernel_validate_selinux_context(lvm_t) +kernel_compute_selinux_av(lvm_t) +kernel_compute_create(lvm_t) +kernel_compute_relabel(lvm_t) +kernel_compute_reachable_user_contexts(lvm_t) +kernel_read_kernel_sysctl(lvm_t) +kernel_read_hardware_state(lvm_t) +# Read /sys/block. Device mapper metadata is kept there. +kernel_read_hardware_state(sysfs_t) +# Read system variables in /proc/sys +kernel_read_kernel_sysctl(lvm_t) +# it has no reason to need this +kernel_ignore_get_core_interface_attributes(lvm_t) + +devices_get_random_data(lvm_t) +devices_get_pseudorandom_data(lvm_t) +devices_use_lvm_control_channel(lvm_t) +devices_manage_dev_symbolic_links(lvm_t) + +# LVM (vgscan) scans for devices by stating every file in /dev and applying a regex... +devices_ignore_get_all_character_device_attributes(lvm_t) +devices_ignore_get_all_block_device_attributes(lvm_t) +devices_ignore_get_generic_character_device_attributes(lvm_t) +devices_ignore_get_generic_block_device_attributes(lvm_t) +terminal_ignore_get_all_users_physical_terminal_attributes(lvm_t) + +filesystem_get_persistent_filesystem_attributes(lvm_t) + +corecommands_search_system_programs_directory(lvm_t) + +domain_use_widely_inheritable_file_descriptors(lvm_t) + +files_search_system_state_data_directory(lvm_t) +files_read_general_system_config(lvm_t) +files_read_runtime_system_config(lvm_t) + +init_script_use_pseudoterminal(lvm_t) +init_use_file_descriptors(lvm_t) + +libraries_use_dynamic_loader(lvm_t) +libraries_read_shared_libraries(lvm_t) + +logging_send_system_log_message(lvm_t) + +miscfiles_read_localization(lvm_t) + +selinux_read_config(lvm_t) +selinux_read_file_contexts(lvm_t) +selinux_newrole_sigchld(lvm_t) + +tunable_policy(`targeted_policy', ` +terminal_ignore_use_general_physical_terminal(lvm_t) +terminal_ignore_use_general_pseudoterminal(lvm_t) +files_ignore_read_rootfs_file(lvm_t) +')dnl end targeted_policy tunable + +optional_policy(`bootloader.te',` +bootloader_modify_temporary_data(lvm_t) +') + +optional_policy(`udev.te', ` +udev_read_database(lvm_t) +') + +ifdef(`TODO',` + +role sysadm_r types lvm_t; +allow lvm_t autofs_t:dir { search getattr }; + +# LVM creates block devices in /dev/mapper or /dev/ +# depending on its version +# LVM(2) needs to create directores (/dev/mapper, /dev/) +# and links from /dev/ to /dev/mapper/- +allow lvm_t device_t:blk_file { create ioctl read getattr lock write setattr append link unlink rename }; +type_transition lvm_t device_t:blk_file fixed_disk_device_t; + +# Access raw devices and old /dev/lvm (c 109,0). Is this needed? +allow lvm_t fixed_disk_device_t:chr_file { create ioctl read getattr lock write setattr append link unlink rename }; + +allow lvm_t default_context_t:dir search; +allow lvm_t fixed_disk_device_t:blk_file { relabelfrom relabelto }; +allow lvm_t device_t:lnk_file { relabelfrom relabelto }; + +# Access terminals. +allow lvm_t admin_tty_type:chr_file { ioctl read getattr lock write append }; + +# LVM (vgscan) scans for devices by stating every file in /dev and applying a regex... +dontaudit lvm_t device_t:fifo_file getattr; + +dontaudit lvm_t initctl_t:fifo_file getattr; +dontaudit lvm_t sbin_t:file getattr; +dontaudit lvm_t var_run_t:dir getattr; + +# for when /usr is not mounted +dontaudit lvm_t file_t:dir search; + +optional_policy(`gnome-pty-helper.te', ` +allow lvm_t sysadm_gph_t:fd use; +') + +optional_policy(`gpm.te', ` +dontaudit lvm_t gpmctl_t:sock_file getattr; +') + +optional_policy(`rhgb.te', ` +allow $1_t rhgb_t:process sigchld; +allow $1_t rhgb_t:fd use; +allow $1_t rhgb_t:fifo_file { read write }; +') + +') dnl end TODO