openvswitch_selinux(8) SELinux Policy openvswitch openvswitch_selinux(8)NAMEopenvswitch_selinux - Security Enhanced Linux Policy for the open‐
vswitch processes
DESCRIPTION
Security-Enhanced Linux secures the openvswitch processes via flexible
mandatory access control.
The openvswitch processes execute with the openvswitch_t SELinux type.
You can check if you have these processes running by executing the ps
command with the -Z qualifier.
For example:
ps -eZ | grep openvswitch_t
ENTRYPOINTS
The openvswitch_t SELinux type can be entered via the open‐
vswitch_exec_t file type.
The default entrypoint paths for the openvswitch_t domain are the fol‐
lowing:
/usr/bin/ovs-vsctl, /usr/sbin/ovsdb-ctl, /usr/bin/ovs-appctl,
/usr/sbin/ovsdb-server, /usr/sbin/ovs-vswitchd, /usr/share/open‐
vswitch/scripts/ovs-ctl
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
openvswitch policy is very flexible allowing users to setup their open‐
vswitch processes in as secure a method as possible.
The following process types are defined for openvswitch:
openvswitch_t
Note: semanage permissive -a openvswitch_t can be used to make the
process type openvswitch_t permissive. SELinux does not deny access to
permissive process types, but the AVC (SELinux denials) messages are
still generated.
BOOLEANS
SELinux policy is customizable based on least access required. open‐
vswitch policy is extremely flexible and has several booleans that
allow you to manipulate the policy and run openvswitch with the tight‐
est access possible.
If you want to allow all daemons to write corefiles to /, you must turn
on the daemons_dump_core boolean. Disabled by default.
setsebool -P daemons_dump_core 1
If you want to enable cluster mode for daemons, you must turn on the
daemons_enable_cluster_mode boolean. Enabled by default.
setsebool -P daemons_enable_cluster_mode 1
If you want to allow all daemons to use tcp wrappers, you must turn on
the daemons_use_tcp_wrapper boolean. Disabled by default.
setsebool -P daemons_use_tcp_wrapper 1
If you want to allow all daemons the ability to read/write terminals,
you must turn on the daemons_use_tty boolean. Disabled by default.
setsebool -P daemons_use_tty 1
If you want to deny any process from ptracing or debugging any other
processes, you must turn on the deny_ptrace boolean. Enabled by
default.
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors,
you must turn on the domain_fd_use boolean. Enabled by default.
setsebool -P domain_fd_use 1
If you want to allow all domains to have the kernel load modules, you
must turn on the domain_kernel_load_modules boolean. Disabled by
default.
setsebool -P domain_kernel_load_modules 1
If you want to allow all domains to execute in fips_mode, you must turn
on the fips_mode boolean. Enabled by default.
setsebool -P fips_mode 1
If you want to enable reading of urandom for all domains, you must turn
on the global_ssp boolean. Disabled by default.
setsebool -P global_ssp 1
If you want to allow confined applications to use nscd shared memory,
you must turn on the nscd_use_shm boolean. Disabled by default.
setsebool -P nscd_use_shm 1
MANAGED FILES
The SELinux process type openvswitch_t can manage files labeled with
the following file types. The paths listed are the default paths for
these file types. Note the processes UID still need to have DAC per‐
missions.
cluster_conf_t
/etc/cluster(/.*)?
cluster_var_lib_t
/var/lib/pcsd(/.*)?
/var/lib/cluster(/.*)?
/var/lib/openais(/.*)?
/var/lib/pengine(/.*)?
/var/lib/corosync(/.*)?
/usr/lib/heartbeat(/.*)?
/var/lib/heartbeat(/.*)?
/var/lib/pacemaker(/.*)?
cluster_var_run_t
/var/run/crm(/.*)?
/var/run/cman_.*
/var/run/rsctmp(/.*)?
/var/run/aisexec.*
/var/run/heartbeat(/.*)?
/var/run/cpglockd.pid
/var/run/corosync.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk
openvswitch_log_t
/var/log/openvswitch(/.*)?
openvswitch_rw_t
/etc/openvswitch(/.*)?
openvswitch_tmp_t
openvswitch_var_lib_t
/var/lib/openvswitch(/.*)?
openvswitch_var_run_t
/var/run/openvswitch(/.*)?
root_t
/
/initrd
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 openvswitch policy is very flexible allowing users to setup
their openvswitch processes in as secure a method as possible.
STANDARD FILE CONTEXT
SELinux defines the file context types for the openvswitch, if you
wanted to store files with these types in a diffent paths, you need to
execute the semanage command to sepecify alternate labeling and then
use restorecon to put the labels on disk.
semanage fcontext -a -t openvswitch_exec_t '/srv/openvswitch/con‐
tent(/.*)?'
restorecon -R -v /srv/myopenvswitch_content
Note: SELinux often uses regular expressions to specify labels that
match multiple files.
The following file types are defined for openvswitch:
openvswitch_exec_t
- Set files with the openvswitch_exec_t type, if you want to transition
an executable to the openvswitch_t domain.
Paths:
/usr/bin/ovs-vsctl, /usr/sbin/ovsdb-ctl, /usr/bin/ovs-appctl,
/usr/sbin/ovsdb-server, /usr/sbin/ovs-vswitchd, /usr/share/open‐
vswitch/scripts/ovs-ctl
openvswitch_log_t
- Set files with the openvswitch_log_t type, if you want to treat the
data as openvswitch log data, usually stored under the /var/log direc‐
tory.
openvswitch_rw_t
- Set files with the openvswitch_rw_t type, if you want to treat the
files as openvswitch read/write content.
openvswitch_tmp_t
- Set files with the openvswitch_tmp_t type, if you want to store open‐
vswitch temporary files in the /tmp directories.
openvswitch_unit_file_t
- Set files with the openvswitch_unit_file_t type, if you want to treat
the files as openvswitch unit content.
openvswitch_var_lib_t
- Set files with the openvswitch_var_lib_t type, if you want to store
the openvswitch files under the /var/lib directory.
openvswitch_var_run_t
- Set files with the openvswitch_var_run_t type, if you want to store
the openvswitch files under the /run or /var/run directory.
Note: File context can be temporarily modified with the chcon command.
If you want to permanently 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.
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 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 auto-generated using sepolicy manpage .
SEE ALSOselinux(8), openvswitch(8), semanage(8), restorecon(8), chcon(1),
sepolicy(8) , setsebool(8)openvswitch 13-11-20 openvswitch_selinux(8)
