| Commit message (Collapse) | Author | Age | Files | Lines |
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On RHEL 8, a SELinux policy is missing when ovs-kmod-ctl use modprobe
to load kernel modules. This patch adds the missing permissions based
on /var/log/audit/audit.log
Example log of the AVC violations:
type=AVC msg=audit(1599075387.136:65): avc: denied { read } for
pid=1472 comm="modprobe" name="modules.alias.bin" dev="dm-0" ino=586629
scontext=system_u:system_r:openvswitch_load_module_t:s0
tcontext=system_u:object_r:modules_dep_t:s0 tclass=file permissive=0
type=AVC msg=audit(1599085253.148:45): avc: denied { open } for pid=1355
comm="modprobe" path="/usr/lib/modules/4.18.0-193.el8.x86_64/modules.dep.bin"
dev="dm-0" ino=624258 scontext=system_u:system_r:openvswitch_load_module_t:s0
tcontext=unconfined_u:object_r:modules_dep_t:s0 tclass=file permissive=0
VMWare-BZ: #2633569
Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com>
Acked-by: Greg Rose <gvrose8192@gmail.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
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These are used for interfacing with conntrack, as well as by some
DPDK PMDs
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
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Starting from OVS 2.10, ovs-vswitchd may fail to run after system reboot
since it fails to load ovs kernel module. It is because the conntrack
zone limit feature introduced in OVS 2.10 now depends on
nf_conntrack_ipv4/6 kernel module, and the SELinux prevents it to load the
two kernel modules.
Example log of the AVC violations:
type=AVC msg=audit(1546903594.735:29): avc: denied { execute_no_trans }
for pid=820 comm="modprobe" path="/usr/bin/bash" dev="dm-0" ino=50337111
scontext=system_u:system_r:openvswitch_load_module_t:s0
tcontext=system_u:object_r:shell_exec_t:s0 tclass=file
type=AVC msg=audit(1546903594.791:30): avc: denied { module_request } for
pid=819 comm="modprobe" kmod="nf_conntrack-2"
scontext=system_u:system_r:openvswitch_load_module_t:s0
tcontext=system_u:system_r:kernel_t:s0 tclass=system
This patch adds the missing permissions for modprobe command in ovs-kmod-ctl
so that the aforementioned issue is resolved.
VMWare-BZ: #2257534
Acked-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
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The new 'map' action is needed for 'hugetlbfs_t:file' too.
CC: Aaron Conole <aconole@redhat.com>
Fixes: d2675a146130 ("selinux: changes to support newer hugetlbfs restrictions")
Signed-off-by: Timothy Redaelli <tredaelli@redhat.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Aaron Conole <aconole@redhat.com>
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Newer selinux base policies now split out 'map' actions, as well as
adding more explicit checks for hugetlbfs objects. Where previously these
weren't required, recent changes have flagged the allocation of hugepages
and subsequent clearing. This means that the hugepage storage information
for the DPDK .rte_config, and clearing actions copying from /dev/zero will
trigger selinux denials.
This commit allows openvswitch to have more permissions for the hugetlbfs
allocation and use.
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
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This commit uses the previously defined selinux label to transition
from the openvswitch_t to openvswitch_load_module_t domain by
executing ovs-kmod-ctl that is labelled with
openvswitch_load_module_exec_t type.
Note that unless the selinux relabel operation is invoked, the script
will not be labelled. This merely instructs the selinux tools that
ovs-kmod-ctl should have a label applied.
Acked-by: Ansis Atteka <aatteka@ovn.org>
Acked-by: Timothy Redaelli <tredaelli@redhat.com>
Signed-off-by: Aaron Conole <aconole@redhat.com>
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Since the policy is an intermediate file, it can inherit the policy
module version from release version.
Also include an SPDX identifier.
Suggested-by: Ansis Atteka <aatteka@ovn.org>
Acked-by: Ansis Atteka <aatteka@ovn.org>
Signed-off-by: Aaron Conole <aconole@redhat.com>
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The ovs-vswitchd daemon requires both CAP_NET_RAW and
CAP_NET_BROADCAST, but these are generally policy prevented by
selinux. This allows these capabilities to be retained by the
openvswitch_t domain.
example:
type=AVC msg=audit(1527876508.109:3043): avc: denied {
net_broadcast } for pid=5368 comm="ovs-vswitchd" capability=11
scontext=system_u:system_r:openvswitch_t:s0
tcontext=system_u:system_r:openvswitch_t:s0 tclass=capability permissive=0
type=AVC msg=audit(1527876508.109:3043): avc: denied {
net_raw } for pid=5368 comm="ovs-vswitchd" capability=11
scontext=system_u:system_r:openvswitch_t:s0
tcontext=system_u:system_r:openvswitch_t:s0 tclass=capability permissive=0
Acked-by: Ansis Atteka <aatteka@ovn.org>
Signed-off-by: Aaron Conole <aconole@redhat.com>
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Defines a type 'openvswitch_load_module_t' used exclusively for loading
modules. This means that the 'openvswitch_t' domain won't require
access to the module loading facility - such access can only happen
after transitioning through the 'openvswitch_load_module_exec_t'
transition context.
A future commit will instruct the selinux policy on how to label the
appropriate script with extended attributes to make use of this new domain.
Acked-by: Ansis Atteka <aatteka@ovn.org>
Acked-by: Timothy Redaelli <tredaelli@redhat.com>
Signed-off-by: Aaron Conole <aconole@redhat.com>
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When running a make clean, it is desirable for the autogenerated files to be
removed.
Signed-off-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
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The dpdk policy adds support for interacting with libvirt, but failed
to include the appropriate svirt_t type. This results in an error
like:
openvswitch-custom.te:53:ERROR 'unknown type svirt_t' at token ';' on line 1060:
Reported-by: Guoshuai Li <ligs@dtdream.com>
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
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Newer libvirt and openstack versions will now label the unix socket as
an `svirt_tmpfs_t` object. This means that in order to support
deploying with the recommended configuration (using a
dpdkvhostuserclient socket), additional permissions need to be
installed as part of the selinux policy.
An example of some of the AVC violations:
type=AVC msg=audit(1518752799.102:978): avc: denied { write }
for pid=14368 comm="ovs-vswitchd" name="vhost0" dev="dm-0" ino=94
scontext=system_u:system_r:openvswitch_t:s0
tcontext=system_u:object_r:svirt_tmp_t:s0 tclass=sock_file
type=AVC msg=audit(1518816172.126:1318): avc: denied { connectto }
for pid=32717 comm="ovs-vswitchd" path="/tmp/vhost0"
scontext=system_u:system_r:openvswitch_t:s0
tcontext=system_u:system_r:svirt_t:s0:c106,c530
tclass=unix_stream_socket
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
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The selinux policy currently builds manually, as a process that either
the user or distribution maintainer undertakes. That process consists
of:
1. Convert the intermediary files into their file form through
'make' statements at the top level.
2. Change to the selinux directory and issue the selinux "make -f"
directive.
This commit introduces a new target 'selinux-policy' which builds the
openvswitch-custom policy files.
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
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The selinux documentation mentions to check the selinux/openvswitch.te file
for any permissions that might need to be added. However, the commit
7bc1aae71e89 ("rhel: make the selinux policy intermediate") moved this
file to be generated from intermediate file selinux/openvswitch.te.in
instead.
Correct the documentation, so that users won't be trying to edit a generated
file.
Also, add a gitignore for the autogenerated file.
Fixes: 7bc1aae71e89 ("rhel: make the selinux policy intermediate")
Reported-by: Ansis Atteka <aatteka@ovn.org>
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
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A last-minute change to the selinux policy caught by testing
incorrectly omitted moving a definition from non-dpdk to dpdk.
This moves the chr_file definition to a non-dpdk enabled permission,
which should allow non-dpdk enabled builds to work.
Fixes: 84d272330506 ("selinux: update policy to reflect non-root and dpdk support")
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ansis Atteka <aatteka@ovn.org>
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The selinux policy that exists in the repository did not specify access to
all of the resources needed for Open vSwitch to properly function with
an enforcing selinux policy. This update allows Open vSwitch to operate
with selinux set to Enforcing mode, even while running as a non-root user.
Acked-by: Flavio Leitner <fbl@sysclose.org>
Acked-by: Ansis Atteka <aatteka@ovn.org>
Signed-off-by: Aaron Conole <aconole@redhat.com>
Tested-by: Jean Hsiao <jhsiao@redhat.com>
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This will be used by an upcoming commit to have @begin_ and @end_ dpdk
blocks to keep dpdk specific policy decisions only active when dpdk is
used.
Acked-by: Flavio Leitner <fbl@sysclose.org>
Acked-by: Ansis Atteka <aatteka@ovn.org>
Signed-off-by: Aaron Conole <aconole@redhat.com>
Tested-by: Jean Hsiao <jhsiao@redhat.com>
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When invoking ovs-ctl force-reload-kmod via '/etc/init.d/openvswitch
force-reload-kmod', spurious errors would output related to 'hostname'
and 'ip', and the system's selinux audit log would complain about some
of the invocations such as those listed at the end of this commit message.
This patch loosens restrictions for openvswitch_t (used for ovs-ctl, as
well as all of the OVS daemons) to allow it to execute 'hostname' and
'ip' commands, and also to execute temporary files created as
openvswitch_tmp_t. This allows force-reload-kmod to run correctly.
Example audit logs:
type=AVC msg=audit(1468515192.912:16720): avc: denied { getattr } for
pid=11687 comm="ovs-ctl" path="/usr/bin/hostname" dev="dm-1"
ino=33557805 scontext=system_u:system_r:openvswitch_t:s0
tcontext=system_u:object_r:hostname_exec_t:s0 tclass=file
type=AVC msg=audit(1468519445.766:16829): avc: denied { getattr } for
pid=13920 comm="ovs-save" path="/usr/sbin/ip" dev="dm-1" ino=67572988
scontext=unconfined_u:system_r:openvswitch_t:s0
tcontext=system_u:object_r:ifconfig_exec_t:s0 tclass=file
type=AVC msg=audit(1468519445.890:16833): avc: denied { execute } for
pid=13849 comm="ovs-ctl" name="tmp.jdEGHntG3Z" dev="dm-1" ino=106876762
scontext=unconfined_u:system_r:openvswitch_t:s0
tcontext=unconfined_u:object_r:openvswitch_tmp_t:s0 tclass=file
VMware-BZ: #1692972
Signed-off-by: Joe Stringer <joe@ovn.org>
Acked-by: Flavio Leitner <fbl@sysclose.org>
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CentOS, RHEL and Fedora distributions ship with their own Open vSwitch
SELinux policy that is too strict and prevents Open vSwitch to work
normally out of the box.
As a solution, this patch introduces a new package which will "loosen"
up "openvswitch_t" SELinux domain so that Open vSwitch could operate
normally.
Intended use-cases of this package are:
1. to allow users to install newer Open vSwitch on already released Fedora,
RHEL and CentOS distributions where the default Open vSwitch SELinux policy
that shipped with the corresponding Linux distribution is not up to date
and did not anticipate that a newer Open vSwitch version might need to
invoke new system calls or need to access certain system resources that
it did not before; And
2. to provide alternative means through which Open vSwitch developers
can proactively fix SELinux related policy issues without waiting for
corresponding Linux distribution maintainers to update their central
Open vSwitch SELinux policy.
This patch was tested on Fedora 23 and CentOS 7. I verified that now
on Fedora 23 Open vSwitch can create a NetLink socket; and that I did
not see following error messages:
vlog|INFO|opened log file /var/log/openvswitch/ovs-vswitchd.log
ovs_numa|INFO|Discovered 2 CPU cores on NUMA node 0
ovs_numa|INFO|Discovered 1 NUMA nodes and 2 CPU cores
reconnect|INFO|unix:/var/run/openvswitch/db.sock: connecting...
reconnect|INFO|unix:/var/run/openvswitch/db.sock: connected
netlink_socket|ERR|fcntl: Permission denied
dpif_netlink|ERR|Generic Netlink family 'ovs_datapath' does not exist.
The Open vSwitch kernel module is p robably not loaded.
dpif|WARN|failed to enumerate system datapaths: Permission denied
dpif|WARN|failed to create datapath ovs-system: Permission denied
I did not test all Open vSwitch features so there still could be some
OVS configuration that would get "Permission denied" errors.
Since, Open vSwitch daemons on Ubuntu 15.10 by default run under "unconfined"
SELinux domain, then there is no need to create a similar debian package
for Ubuntu, because it works on default Ubuntu installation.
Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Acked-by: Flavio Leitner <fbl@sysclose.com>
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