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rootfs: add default agent policy file

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Restricting access to agent endpoints using agent-config.toml is
expected to be deprecated in the main branch. Therefore, in
preparation of merging this script with its main branch version,
install default settings for main branch's kata-opa service.

coco-default.rego blocks access to the same kata agent endpoints
that are blocked by agent-config.toml. For additional information,
search for "default-policy.rego" in main branch's rootfs.sh.

Fixes: #8219

Signed-off-by: Dan Mihai <dmihai@microsoft.com>
This commit is contained in:
Dan Mihai 2023-10-12 23:31:41 +00:00
parent 3bd72b9a0d
commit 159bc2713f
2 changed files with 54 additions and 0 deletions
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40
src/kata-opa/coco-default.rego Normal file
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@ -0,0 +1,40 @@
package agent_policy
default AddARPNeighborsRequest := true
default AddSwapRequest := true
default CloseStdinRequest := true
default CopyFileRequest := true
default CreateContainerRequest := true
default CreateSandboxRequest := true
default DestroySandboxRequest := true
default GetMetricsRequest := true
default GetOOMEventRequest := true
default GuestDetailsRequest := true
default ListInterfacesRequest := true
default ListRoutesRequest := true
default MemHotplugByProbeRequest := true
default OnlineCPUMemRequest := true
default PauseContainerRequest := true
default PullImageRequest := true
default ReadStreamRequest := true
default RemoveContainerRequest := true
default RemoveStaleVirtiofsShareMountsRequest := true
default ResumeContainerRequest := true
default SetGuestDateTimeRequest := true
default SetPolicyRequest := true
default SignalProcessRequest := true
default StartContainerRequest := true
default StartTracingRequest := true
default StatsContainerRequest := true
default StopTracingRequest := true
default TtyWinResizeRequest := true
default UpdateContainerRequest := true
default UpdateEphemeralMountsRequest := true
default UpdateInterfaceRequest := true
default UpdateRoutesRequest := true
default WaitProcessRequest := true
default WriteStreamRequest := true
default ExecProcessRequest := false
default ReseedRandomDevRequest := false
default SetPolicyRequest := false

14
tools/osbuilder/rootfs-builder/rootfs.sh
View File

@ -667,6 +667,20 @@ EOF
chmod g+rx,o+x "${ROOTFS_DIR}" chmod g+rx,o+x "${ROOTFS_DIR}"
fi fi
# Restricting access to agent endpoints using agent-config.toml is expected to
# be deprecated in the main branch. Therefore, in preparation of merging this
# script with its main branch version, install default settings for main branch's
# kata-opa service. coco-default.rego blocks access to the same kata agent
# endpoints that are blocked by agent-config.toml. For additional information,
# search for "default-policy.rego" in main branch's rootfs.sh.
local kata_opa_in_dir="${script_dir}/../../../src/kata-opa"
local opa_settings_dir="/etc/kata-opa"
local policy_file="coco-default.rego"
local policy_dir="${ROOTFS_DIR}/${opa_settings_dir}"
mkdir -p "${policy_dir}"
install -D -o root -g root -m 0644 "${kata_opa_in_dir}/${policy_file}" -T "${policy_dir}/${policy_file}"
ln -sf "${policy_file}" "${policy_dir}/default-policy.rego"
info "Check init is installed" info "Check init is installed"
[ -x "${init}" ] || [ -L "${init}" ] || die "/sbin/init is not installed in ${ROOTFS_DIR}" [ -x "${init}" ] || [ -L "${init}" ] || die "/sbin/init is not installed in ${ROOTFS_DIR}"
OK "init is installed" OK "init is installed"