#DESC LVM - Linux Volume Manager

#

# Author:  Michael Kaufman <walker@screwage.com>

# X-Debian-Packages: lvm10 lvm2 lvm-common

#

#################################

#

# Rules for the lvm_t domain.

#

# lvm_t is the domain for LVM administration.

# lvm_exec_t is the type of the corresponding programs.

# lvm_etc_t is for read-only LVM configuration files.

# lvm_metadata_t is the type of LVM metadata files in /etc that are

# modified at runtime.

#

type lvm_vg_t, file_type, sysadmfile;

type lvm_metadata_t, file_type, sysadmfile;

type lvm_control_t, device_type, dev_fs;

etcdir_domain(lvm)

lock_domain(lvm)

allow lvm_t lvm_lock_t:dir rw_dir_perms;

# needs privowner because it assigns the identity system_u to device nodes

# but runs as the identity of the sysadmin

daemon_base_domain(lvm, `, fs_domain, privowner')

role sysadm_r types lvm_t;

domain_auto_trans(sysadm_t, lvm_exec_t, lvm_t)

# LVM will complain a lot if it cannot set its priority.

allow lvm_t self:process setsched;

allow lvm_t self:fifo_file rw_file_perms;

allow lvm_t self:unix_dgram_socket create_socket_perms;

r_dir_file(lvm_t, proc_t)

allow lvm_t self:file rw_file_perms;

# Read system variables in /proc/sys

read_sysctl(lvm_t)

# Read /sys/block. Device mapper metadata is kept there.

r_dir_file(lvm_t, sysfs_t) 

allow lvm_t fs_t:filesystem getattr;

# Read configuration files in /etc.

allow lvm_t { etc_t etc_runtime_t }:file { getattr read };

# LVM creates block devices in /dev/mapper or /dev/<vg>

# depending on its version

file_type_auto_trans(lvm_t, device_t, fixed_disk_device_t, blk_file)

# LVM(2) needs to create directores (/dev/mapper, /dev/<vg>)

# and links from /dev/<vg> to /dev/mapper/<vg>-<lv>

allow lvm_t device_t:dir create_dir_perms;

allow lvm_t device_t:lnk_file create_lnk_perms;

# /lib/lvm-<version> holds the actual LVM binaries (and symlinks)

allow lvm_t lvm_exec_t:dir search;

allow lvm_t lvm_exec_t:{ file lnk_file } r_file_perms;

tmp_domain(lvm)

allow lvm_t { random_device_t urandom_device_t }:chr_file { getattr read ioctl };

# DAC overrides and mknod for modifying /dev entries (vgmknodes)

allow lvm_t self:capability { chown dac_override ipc_lock sys_admin sys_nice sys_resource mknod };

# Write to /etc/lvm, /etc/lvmtab, /etc/lvmtab.d

file_type_auto_trans(lvm_t, { etc_t lvm_etc_t }, lvm_metadata_t, file)

allow lvm_t lvm_metadata_t:dir rw_dir_perms;

# Inherit and use descriptors from init.

allow lvm_t init_t:fd use;

# LVM is split into many individual binaries

can_exec(lvm_t, lvm_exec_t)

# Access raw devices and old /dev/lvm (c 109,0).  Is this needed?

allow lvm_t fixed_disk_device_t:chr_file create_file_perms;

# relabel devices

allow lvm_t { default_context_t file_context_t }:dir search;

allow lvm_t file_context_t:file { getattr read };

can_getsecurity(lvm_t)

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 { initrc_devpts_t admin_tty_type }:chr_file rw_file_perms;

allow lvm_t devtty_t:chr_file rw_file_perms;

ifdef(`gnome-pty-helper.te', `allow lvm_t sysadm_gph_t:fd use;')

allow lvm_t privfd:fd use;

allow lvm_t devpts_t:dir { search getattr read };

read_locale(lvm_t)

# LVM (vgscan) scans for devices by stating every file in /dev and applying a regex...

dontaudit lvm_t device_type:{ chr_file blk_file } { getattr read };

dontaudit lvm_t ttyfile:chr_file getattr;

dontaudit lvm_t device_t:{ fifo_file dir chr_file blk_file } getattr;

dontaudit lvm_t devpts_t:dir { getattr read };

dontaudit lvm_t xconsole_device_t:fifo_file getattr;

ifdef(`gpm.te', `

dontaudit lvm_t gpmctl_t:sock_file getattr;

')

dontaudit lvm_t initctl_t:fifo_file getattr;

allow lvm_t sbin_t:dir search;

dontaudit lvm_t sbin_t:file { getattr read };

allow lvm_t lvm_control_t:chr_file rw_file_perms;

allow initrc_t lvm_control_t:chr_file { getattr read unlink };

allow initrc_t device_t:chr_file create;

var_run_domain(lvm)

# for when /usr is not mounted

dontaudit lvm_t file_t:dir search;

allow lvm_t tmpfs_t:dir r_dir_perms;

r_dir_file(lvm_t, selinux_config_t)

# it has no reason to need this

dontaudit lvm_t proc_kcore_t:file getattr;

allow lvm_t var_t:dir { search getattr };

allow lvm_t ramfs_t:filesystem unmount;

# cluster LVM daemon

daemon_domain(clvmd)

can_network(clvmd_t)

can_ypbind(clvmd_t)

allow clvmd_t self:capability net_bind_service;

allow clvmd_t self:socket create_socket_perms;

allow clvmd_t self:fifo_file { read write };

allow clvmd_t self:file { getattr read };

allow clvmd_t self:unix_stream_socket { connectto create_stream_socket_perms };

allow clvmd_t reserved_port_t:tcp_socket name_bind;

dontaudit clvmd_t reserved_port_type:tcp_socket name_bind;

dontaudit clvmd_t selinux_config_t:dir search;