virt_selinux(8) virt SELinux Policy documentation virt_selinux(8)NAMEvirt_selinux - Security Enhanced Linux Policy for the virt processes
DESCRIPTION
Security-Enhanced Linux secures the virt processes via flexible manda‐
tory access control.
BOOLEANS
SELinux policy is customizable based on least access required. virt
policy is extremely flexible and has several booleans that allow you to
manipulate the policy and run virt with the tightest access possible.
If you want to allow confined virtual guests to manage nfs file, you
must turn on the virt_use_nfs boolean.
setsebool -P virt_use_nfs 1
If you want to allow confined virtual guests to use serial/parallel
communication port, you must turn on the virt_use_comm boolean.
setsebool -P virt_use_comm 1
If you want to allow confined virtual guests to interact with the
xserve, you must turn on the virt_use_xserver boolean.
setsebool -P virt_use_xserver 1
If you want to allow confined virtual guests to manage device configu‐
ration, (pci, you must turn on the virt_use_sysfs boolean.
setsebool -P virt_use_sysfs 1
If you want to allow confined virtual guests to use executable memory
and executable stac, you must turn on the virt_use_execmem boolean.
setsebool -P virt_use_execmem 1
If you want to allow confined virtual guests to interact with the san‐
loc, you must turn on the virt_use_sanlock boolean.
setsebool -P virt_use_sanlock 1
If you want to allow confined virtual guests to use usb device, you
must turn on the virt_use_usb boolean.
setsebool -P virt_use_usb 1
If you want to allow confined virtual guests to read fuse file, you
must turn on the virt_use_fusefs boolean.
setsebool -P virt_use_fusefs 1
If you want to allow confined virtual guests to manage cifs file, you
must turn on the virt_use_samba boolean.
setsebool -P virt_use_samba 1
NSSWITCH DOMAIN
If you want to allow users to login using a sssd serve for the virtd_t,
virtd_lxc_t, you must turn on the authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the
virtd_t, virtd_lxc_t, you must turn on the allow_kerberos boolean.
setsebool -P allow_kerberos 1
If you want to allow system to run with NI for the virtd_t,
virtd_lxc_t, you must turn on the allow_ypbind boolean.
setsebool -P allow_ypbind 1
FILE CONTEXTS
SELinux requires files to have an extended attribute to define the file
type.
You can see the context of a file using the -Z option to ls
Policy governs the access confined processes have to these files.
SELinux virt policy is very flexible allowing users to setup their virt
processes in as secure a method as possible.
The following file types are defined for virt:
virt_bridgehelper_exec_t
- Set files with the virt_bridgehelper_exec_t type, if you want to
transition an executable to the virt_bridgehelper_t domain.
virt_cache_t
- Set files with the virt_cache_t type, if you want to store the files
under the /var/cache directory.
Paths:
/var/cache/oz(/.*)?, /var/cache/libvirt(/.*)?
virt_content_t
- Set files with the virt_content_t type, if you want to treat the
files as virt content.
Paths:
/var/lib/vdsm(/.*)?, /var/lib/oz/isos(/.*)?, /var/lib/lib‐
virt/boot(/.*)?, /var/lib/libvirt/isos(/.*)?
virt_etc_rw_t
- Set files with the virt_etc_rw_t type, if you want to treat the files
as virt etc read/write content.
Paths:
/etc/libvirt/.*/.*, /etc/xen/.*/.*, /etc/xen/[^/]*, /etc/lib‐
virt/[^/]*
virt_etc_t
- Set files with the virt_etc_t type, if you want to store virt files
in the /etc directories.
Paths:
/etc/libvirt/[^/]*, /etc/libvirt, /etc/xen/[^/]*, /etc/xen
virt_home_t
- Set files with the virt_home_t type, if you want to store virt files
in the users home directory.
virt_image_t
- Set files with the virt_image_t type, if you want to treat the files
as virt image data.
Paths:
/var/lib/imagefactory/images(/.*)?, /var/lib/libvirt/images(/.*)?
virt_log_t
- Set files with the virt_log_t type, if you want to treat the data as
virt log data, usually stored under the /var/log directory.
Paths:
/var/log/log(/.*)?, /var/log/vdsm(/.*)?, /var/log/libvirt(/.*)?
virt_lxc_var_run_t
- Set files with the virt_lxc_var_run_t type, if you want to store the
virt lxc files under the /run directory.
Paths:
/var/run/libvirt-sandbox(/.*)?, /var/run/libvirt/lxc(/.*)?
virt_qmf_exec_t
- Set files with the virt_qmf_exec_t type, if you want to transition an
executable to the virt_qmf_t domain.
virt_tmp_t
- Set files with the virt_tmp_t type, if you want to store virt tempo‐
rary files in the /tmp directories.
virt_var_lib_t
- Set files with the virt_var_lib_t type, if you want to store the virt
files under the /var/lib directory.
Paths:
/var/lib/oz(/.*)?, /var/lib/libvirt(/.*)?
virt_var_run_t
- Set files with the virt_var_run_t type, if you want to store the virt
files under the /run directory.
Paths:
/var/run/vdsm(/.*)?, /var/vdsm(/.*)?, /var/run/libvirt(/.*)?
virtd_exec_t
- Set files with the virtd_exec_t type, if you want to transition an
executable to the virtd_t domain.
Paths:
/usr/sbin/condor_vm-gahp, /usr/bin/imagefactory, /usr/bin/vios-
proxy-host, /usr/bin/imgfac.py, /usr/bin/vios-proxy-guest,
/usr/bin/nova-compute, /usr/sbin/libvirtd
virtd_initrc_exec_t
- Set files with the virtd_initrc_exec_t type, if you want to transi‐
tion an executable to the virtd_initrc_t domain.
virtd_keytab_t
- Set files with the virtd_keytab_t type, if you want to treat the
files as kerberos keytab files.
virtd_lxc_exec_t
- Set files with the virtd_lxc_exec_t type, if you want to transition
an executable to the virtd_lxc_t domain.
Note: File context can be temporarily modified with the chcon command.
If you want to permanantly change the file context you need to use the
semanage fcontext command. This will modify the SELinux labeling data‐
base. You will need to use restorecon to apply the labels.
PORT TYPES
SELinux defines port types to represent TCP and UDP ports.
You can see the types associated with a port by using the following
command:
semanage port -l
Policy governs the access confined processes have to these ports.
SELinux virt policy is very flexible allowing users to setup their virt
processes in as secure a method as possible.
The following port types are defined for virt:
virt_migration_port_t
Default Defined Ports:
tcp 49152-49216
virt_port_t
Default Defined Ports:
tcp 16509,16514
udp 16509,16514
PROCESS TYPES
SELinux defines process types (domains) for each process running on the
system
You can see the context of a process using the -Z option to ps
Policy governs the access confined processes have to files. SELinux
virt policy is very flexible allowing users to setup their virt pro‐
cesses in as secure a method as possible.
The following process types are defined for virt:
virtd_lxc_t, virt_qmf_t, virt_bridgehelper_t, virtd_t
Note: semanage permissive -a PROCESS_TYPE can be used to make a process
type permissive. Permissive process types are not denied access by
SELinux. AVC messages will still be generated.
COMMANDS
semanage fcontext can also be used to manipulate default file context
mappings.
semanage permissive can also be used to manipulate whether or not a
process type is permissive.
semanage module can also be used to enable/disable/install/remove pol‐
icy modules.
semanage port can also be used to manipulate the port definitions
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux pol‐
icy settings.
AUTHOR
This manual page was autogenerated by genman.py.
SEE ALSOselinux(8), virt(8), semanage(8), restorecon(8), chcon(1) , setse‐
bool(8)dwalsh@redhat.com virt virt_selinux(8)
