remove "selinux" build tag

The build tag was removed in go-selinux v1.8.0: opencontainers/selinux#132 Related: remove "apparmor" build tag: 0a9147f3aa Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
2020-12-15 19:59:18 +09:00
parent 23315f8647
commit 7e6e4c466f
17 changed files with 268 additions and 124 deletions
--- a/pkg/cri/server/helpers_selinux_linux_test.go
+++ b/pkg/cri/server/helpers_selinux_linux_test.go
@@ -0,0 +1,157 @@
+/*
+   Copyright The containerd 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 server
+
+import (
+	"testing"
+
+	"github.com/opencontainers/selinux/go-selinux"
+	"github.com/stretchr/testify/assert"
+	runtime "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
+)
+
+func TestInitSelinuxOpts(t *testing.T) {
+	if !selinux.GetEnabled() {
+		t.Skip("selinux is not enabled")
+	}
+
+	for desc, test := range map[string]struct {
+		selinuxOpt   *runtime.SELinuxOption
+		processLabel string
+		mountLabel   string
+		expectErr    bool
+	}{
+		"Should return empty strings for processLabel and mountLabel when selinuxOpt is nil": {
+			selinuxOpt:   nil,
+			processLabel: ".*:c[0-9]{1,3},c[0-9]{1,3}",
+			mountLabel:   ".*:c[0-9]{1,3},c[0-9]{1,3}",
+		},
+		"Should overlay fields on processLabel when selinuxOpt has been initialized partially": {
+			selinuxOpt: &runtime.SELinuxOption{
+				User:  "",
+				Role:  "user_r",
+				Type:  "",
+				Level: "s0:c1,c2",
+			},
+			processLabel: "system_u:user_r:(container_file_t|svirt_lxc_net_t):s0:c1,c2",
+			mountLabel:   "system_u:object_r:(container_file_t|svirt_sandbox_file_t):s0:c1,c2",
+		},
+		"Should be resolved correctly when selinuxOpt has been initialized completely": {
+			selinuxOpt: &runtime.SELinuxOption{
+				User:  "user_u",
+				Role:  "user_r",
+				Type:  "user_t",
+				Level: "s0:c1,c2",
+			},
+			processLabel: "user_u:user_r:user_t:s0:c1,c2",
+			mountLabel:   "user_u:object_r:(container_file_t|svirt_sandbox_file_t):s0:c1,c2",
+		},
+		"Should be resolved correctly when selinuxOpt has been initialized with level=''": {
+			selinuxOpt: &runtime.SELinuxOption{
+				User:  "user_u",
+				Role:  "user_r",
+				Type:  "user_t",
+				Level: "",
+			},
+			processLabel: "user_u:user_r:user_t:s0:c[0-9]{1,3},c[0-9]{1,3}",
+			mountLabel:   "user_u:object_r:(container_file_t|svirt_sandbox_file_t):s0",
+		},
+		"Should return error when the format of 'level' is not correct": {
+			selinuxOpt: &runtime.SELinuxOption{
+				User:  "user_u",
+				Role:  "user_r",
+				Type:  "user_t",
+				Level: "s0,c1,c2",
+			},
+			expectErr: true,
+		},
+	} {
+		t.Run(desc, func(t *testing.T) {
+			processLabel, mountLabel, err := initLabelsFromOpt(test.selinuxOpt)
+			if test.expectErr {
+				assert.Error(t, err)
+			} else {
+				assert.Regexp(t, test.processLabel, processLabel)
+				assert.Regexp(t, test.mountLabel, mountLabel)
+			}
+		})
+	}
+}
+
+func TestCheckSelinuxLevel(t *testing.T) {
+	for desc, test := range map[string]struct {
+		level         string
+		expectNoMatch bool
+	}{
+		"s0": {
+			level: "s0",
+		},
+		"s0-s0": {
+			level: "s0-s0",
+		},
+		"s0:c0": {
+			level: "s0:c0",
+		},
+		"s0:c0.c3": {
+			level: "s0:c0.c3",
+		},
+		"s0:c0,c3": {
+			level: "s0:c0,c3",
+		},
+		"s0-s0:c0,c3": {
+			level: "s0-s0:c0,c3",
+		},
+		"s0-s0:c0,c3.c6": {
+			level: "s0-s0:c0,c3.c6",
+		},
+		"s0-s0:c0,c3.c6,c8.c10": {
+			level: "s0-s0:c0,c3.c6,c8.c10",
+		},
+		"s0-s0:c0,c3.c6,c8,c10": {
+			level: "s0-s0:c0,c3.c6",
+		},
+		"s0,c0,c3": {
+			level:         "s0,c0,c3",
+			expectNoMatch: true,
+		},
+		"s0:c0.c3.c6": {
+			level:         "s0:c0.c3.c6",
+			expectNoMatch: true,
+		},
+		"s0-s0,c0,c3": {
+			level:         "s0-s0,c0,c3",
+			expectNoMatch: true,
+		},
+		"s0-s0:c0.c3.c6": {
+			level:         "s0-s0:c0.c3.c6",
+			expectNoMatch: true,
+		},
+		"s0-s0:c0,c3.c6.c8": {
+			level:         "s0-s0:c0,c3.c6.c8",
+			expectNoMatch: true,
+		},
+	} {
+		t.Run(desc, func(t *testing.T) {
+			err := checkSelinuxLevel(test.level)
+			if test.expectNoMatch {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}