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verifier.go
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verifier.go
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// Copyright 2018-2019 Authors of Cilium
//
// 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 RuntimeTest
import (
"fmt"
"github.com/cilium/cilium/test/config"
. "github.com/cilium/cilium/test/ginkgo-ext"
"github.com/cilium/cilium/test/helpers"
. "github.com/onsi/gomega"
)
const (
script = "bpf/verifier-test.sh"
)
var _ = Describe("RuntimeVerifier", func() {
var vm *helpers.SSHMeta
BeforeAll(func() {
vm = helpers.InitRuntimeHelper(helpers.Runtime, logger)
ExpectCiliumReady(vm)
By("Stopping Cilium")
res := vm.ExecWithSudo("systemctl stop cilium")
res.ExpectSuccess()
ExpectCiliumNotRunning(vm)
res = vm.ExecWithSudo("rm -f /sys/fs/bpf/tc/globals/cilium*")
res.ExpectSuccess()
cmd := fmt.Sprintf("make -C %s/../bpf clean V=0", helpers.BasePath)
res = vm.Exec(cmd)
res.ExpectSuccess("Expected cleaning the bpf/ tree to succeed")
})
AfterFailed(func() {
if config.CiliumTestConfig.HoldEnvironment {
GinkgoPrint("Skipped gathering logs (-cilium.holdEnvironment=true)\n")
return
}
GinkgoPrint("===================== TEST FAILED =====================")
commands := []string{"clang --version", "uname -a"}
for _, cmd := range commands {
res := vm.ExecWithSudo(fmt.Sprintf("%s", cmd))
GinkgoPrint(res.GetDebugMessage())
}
GinkgoPrint("===================== EXITING REPORT GENERATION =====================\n")
})
AfterAll(func() {
err := vm.RestartCilium()
Expect(err).Should(BeNil(), "restarting Cilium failed")
vm.CloseSSHClient()
})
It("runs the kernel verifier against the tree copy of the BPF datapath", func() {
By("Building BPF objects from the tree")
cmd := fmt.Sprintf("make -C %s/../bpf V=0", helpers.BasePath)
res := vm.Exec(cmd)
res.ExpectSuccess("Expected compilation of the BPF objects to succeed")
By("Running the verifier test script")
cmd = fmt.Sprintf("%s/%s", helpers.BasePath, script)
res = vm.ExecWithSudo(cmd)
res.ExpectSuccess("Expected the kernel verifier to pass for BPF programs")
})
})