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// Copyright 2017-2020 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sysctl_test
import (
"fmt"
"math/rand"
"runtime"
"strings"
"github.com/containernetworking/plugins/pkg/ns"
"github.com/containernetworking/plugins/pkg/testutils"
"github.com/containernetworking/plugins/pkg/utils/sysctl"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/vishvananda/netlink"
)
const (
sysctlDotKeyTemplate = "net.ipv4.conf.%s.proxy_arp"
sysctlSlashKeyTemplate = "net/ipv4/conf/%s/proxy_arp"
)
var _ = Describe("Sysctl tests", func() {
var testIfaceName string
var cleanup func()
BeforeEach(func() {
// Save a reference to the original namespace,
// Add a new NS
currNs, err := ns.GetCurrentNS()
Expect(err).NotTo(HaveOccurred())
testNs, err := testutils.NewNS()
Expect(err).NotTo(HaveOccurred())
testIfaceName = fmt.Sprintf("cnitest.%d", rand.Intn(100000))
testIface := &netlink.Dummy{
LinkAttrs: netlink.LinkAttrs{
Name: testIfaceName,
Namespace: netlink.NsFd(int(testNs.Fd())),
},
}
err = netlink.LinkAdd(testIface)
Expect(err).NotTo(HaveOccurred())
runtime.LockOSThread()
err = testNs.Set()
Expect(err).NotTo(HaveOccurred())
cleanup = func() {
netlink.LinkDel(testIface)
currNs.Set()
}
})
AfterEach(func() {
cleanup()
})
Describe("Sysctl", func() {
It("reads keys with dot separators", func() {
sysctlIfaceName := strings.Replace(testIfaceName, ".", "/", -1)
sysctlKey := fmt.Sprintf(sysctlDotKeyTemplate, sysctlIfaceName)
_, err := sysctl.Sysctl(sysctlKey)
Expect(err).NotTo(HaveOccurred())
})
})
Describe("Sysctl", func() {
It("reads keys with slash separators", func() {
sysctlKey := fmt.Sprintf(sysctlSlashKeyTemplate, testIfaceName)
_, err := sysctl.Sysctl(sysctlKey)
Expect(err).NotTo(HaveOccurred())
})
})
Describe("Sysctl", func() {
It("writes keys with dot separators", func() {
sysctlIfaceName := strings.Replace(testIfaceName, ".", "/", -1)
sysctlKey := fmt.Sprintf(sysctlDotKeyTemplate, sysctlIfaceName)
_, err := sysctl.Sysctl(sysctlKey, "1")
Expect(err).NotTo(HaveOccurred())
})
})
Describe("Sysctl", func() {
It("writes keys with slash separators", func() {
sysctlKey := fmt.Sprintf(sysctlSlashKeyTemplate, testIfaceName)
_, err := sysctl.Sysctl(sysctlKey, "1")
Expect(err).NotTo(HaveOccurred())
})
})
})
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