From a6108f1c19f4432eff4ee1e52eef9e60d13329e5 Mon Sep 17 00:00:00 2001 From: Daniel J Walsh Date: Mon, 4 Nov 2019 18:07:58 -0500 Subject: [PATCH] Add support for RunAsUser and RunAsGroup Currently podman generate kube does not generate the correct RunAsUser and RunAsGroup options in the yaml file. This patch fixes this. This patch also make `podman play kube` use the RunAdUser and RunAsGroup options if they are specified in the yaml file. Signed-off-by: Daniel J Walsh --- libpod/kube.go | 9 ++-- pkg/adapter/pods.go | 93 +++++++++++++++++++--------------- test/e2e/generate_kube_test.go | 33 ++++++++++++ test/e2e/test.yaml | 3 ++ 4 files changed, 95 insertions(+), 43 deletions(-) diff --git a/libpod/kube.go b/libpod/kube.go index d0e7baf956..47a77991e1 100644 --- a/libpod/kube.go +++ b/libpod/kube.go @@ -487,13 +487,16 @@ func generateKubeSecurityContext(c *Container) (*v1.SecurityContext, error) { if err := c.syncContainer(); err != nil { return nil, errors.Wrapf(err, "unable to sync container during YAML generation") } + logrus.Debugf("Looking in container for user: %s", c.User()) - u, err := lookup.GetUser(c.state.Mountpoint, c.User()) + execUser, err := lookup.GetUserGroupInfo(c.state.Mountpoint, c.User(), nil) if err != nil { return nil, err } - user := int64(u.Uid) - sc.RunAsUser = &user + uid := int64(execUser.Uid) + gid := int64(execUser.Gid) + sc.RunAsUser = &uid + sc.RunAsGroup = &gid } return &sc, nil } diff --git a/pkg/adapter/pods.go b/pkg/adapter/pods.go index f6795970bd..6648edc821 100644 --- a/pkg/adapter/pods.go +++ b/pkg/adapter/pods.go @@ -666,6 +666,58 @@ func getPodPorts(containers []v1.Container) []ocicni.PortMapping { return infraPorts } +func setupSecurityContext(containerConfig *createconfig.CreateConfig, containerYAML v1.Container) { + if containerYAML.SecurityContext == nil { + return + } + if containerYAML.SecurityContext.ReadOnlyRootFilesystem != nil { + containerConfig.ReadOnlyRootfs = *containerYAML.SecurityContext.ReadOnlyRootFilesystem + } + if containerYAML.SecurityContext.Privileged != nil { + containerConfig.Privileged = *containerYAML.SecurityContext.Privileged + } + + if containerYAML.SecurityContext.AllowPrivilegeEscalation != nil { + containerConfig.NoNewPrivs = !*containerYAML.SecurityContext.AllowPrivilegeEscalation + } + + if seopt := containerYAML.SecurityContext.SELinuxOptions; seopt != nil { + if seopt.User != "" { + containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=user:%s", seopt.User)) + containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("user:%s", seopt.User)) + } + if seopt.Role != "" { + containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=role:%s", seopt.Role)) + containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("role:%s", seopt.Role)) + } + if seopt.Type != "" { + containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=type:%s", seopt.Type)) + containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("type:%s", seopt.Type)) + } + if seopt.Level != "" { + containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=level:%s", seopt.Level)) + containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("level:%s", seopt.Level)) + } + } + if caps := containerYAML.SecurityContext.Capabilities; caps != nil { + for _, capability := range caps.Add { + containerConfig.CapAdd = append(containerConfig.CapAdd, string(capability)) + } + for _, capability := range caps.Drop { + containerConfig.CapDrop = append(containerConfig.CapDrop, string(capability)) + } + } + if containerYAML.SecurityContext.RunAsUser != nil { + containerConfig.User = fmt.Sprintf("%d", *containerYAML.SecurityContext.RunAsUser) + } + if containerYAML.SecurityContext.RunAsGroup != nil { + if containerConfig.User == "" { + containerConfig.User = "0" + } + containerConfig.User = fmt.Sprintf("%s:%d", containerConfig.User, *containerYAML.SecurityContext.RunAsGroup) + } +} + // kubeContainerToCreateConfig takes a v1.Container and returns a createconfig describing a container func kubeContainerToCreateConfig(ctx context.Context, containerYAML v1.Container, runtime *libpod.Runtime, newImage *image.Image, namespaces map[string]string, volumes map[string]string, podID string) (*createconfig.CreateConfig, error) { var ( @@ -690,47 +742,8 @@ func kubeContainerToCreateConfig(ctx context.Context, containerYAML v1.Container containerConfig.User = imageData.Config.User } - if containerYAML.SecurityContext != nil { - if containerConfig.SecurityOpts != nil { - if containerYAML.SecurityContext.ReadOnlyRootFilesystem != nil { - containerConfig.ReadOnlyRootfs = *containerYAML.SecurityContext.ReadOnlyRootFilesystem - } - if containerYAML.SecurityContext.Privileged != nil { - containerConfig.Privileged = *containerYAML.SecurityContext.Privileged - } + setupSecurityContext(&containerConfig, containerYAML) - if containerYAML.SecurityContext.AllowPrivilegeEscalation != nil { - containerConfig.NoNewPrivs = !*containerYAML.SecurityContext.AllowPrivilegeEscalation - } - - } - if seopt := containerYAML.SecurityContext.SELinuxOptions; seopt != nil { - if seopt.User != "" { - containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=user:%s", seopt.User)) - containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("user:%s", seopt.User)) - } - if seopt.Role != "" { - containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=role:%s", seopt.Role)) - containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("role:%s", seopt.Role)) - } - if seopt.Type != "" { - containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=type:%s", seopt.Type)) - containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("type:%s", seopt.Type)) - } - if seopt.Level != "" { - containerConfig.SecurityOpts = append(containerConfig.SecurityOpts, fmt.Sprintf("label=level:%s", seopt.Level)) - containerConfig.LabelOpts = append(containerConfig.LabelOpts, fmt.Sprintf("level:%s", seopt.Level)) - } - } - if caps := containerYAML.SecurityContext.Capabilities; caps != nil { - for _, capability := range caps.Add { - containerConfig.CapAdd = append(containerConfig.CapAdd, string(capability)) - } - for _, capability := range caps.Drop { - containerConfig.CapDrop = append(containerConfig.CapDrop, string(capability)) - } - } - } var err error containerConfig.SeccompProfilePath, err = libpod.DefaultSeccompPath() if err != nil { diff --git a/test/e2e/generate_kube_test.go b/test/e2e/generate_kube_test.go index 5d3b1238aa..603edbe6b0 100644 --- a/test/e2e/generate_kube_test.go +++ b/test/e2e/generate_kube_test.go @@ -208,6 +208,39 @@ var _ = Describe("Podman generate kube", func() { Expect(psOut).To(ContainSubstring("test2")) }) + It("podman generate with user and reimport kube on pod", func() { + podName := "toppod" + _, rc, _ := podmanTest.CreatePod(podName) + Expect(rc).To(Equal(0)) + + session := podmanTest.Podman([]string{"create", "--pod", podName, "--name", "test1", "--user", "100:200", ALPINE, "top"}) + session.WaitWithDefaultTimeout() + Expect(session.ExitCode()).To(Equal(0)) + + inspect := podmanTest.Podman([]string{"inspect", "--format", "{{.Config.User}}", "test1"}) + inspect.WaitWithDefaultTimeout() + Expect(inspect.ExitCode()).To(Equal(0)) + Expect(inspect.OutputToString()).To(ContainSubstring("100:200")) + + outputFile := filepath.Join(podmanTest.RunRoot, "pod.yaml") + kube := podmanTest.Podman([]string{"generate", "kube", "-f", outputFile, podName}) + kube.WaitWithDefaultTimeout() + Expect(kube.ExitCode()).To(Equal(0)) + + session = podmanTest.Podman([]string{"pod", "rm", "-af"}) + session.WaitWithDefaultTimeout() + Expect(session.ExitCode()).To(Equal(0)) + + session = podmanTest.Podman([]string{"play", "kube", outputFile}) + session.WaitWithDefaultTimeout() + Expect(session.ExitCode()).To(Equal(0)) + + inspect1 := podmanTest.Podman([]string{"inspect", "--format", "{{.Config.User}}", "test1"}) + inspect1.WaitWithDefaultTimeout() + Expect(inspect1.ExitCode()).To(Equal(0)) + Expect(inspect1.OutputToString()).To(ContainSubstring(inspect.OutputToString())) + }) + It("podman generate kube with volume", func() { vol1 := filepath.Join(podmanTest.TempDir, "vol-test1") err := os.MkdirAll(vol1, 0755) diff --git a/test/e2e/test.yaml b/test/e2e/test.yaml index 319d6a4a05..98d2c91df2 100644 --- a/test/e2e/test.yaml +++ b/test/e2e/test.yaml @@ -24,6 +24,9 @@ spec: name: test resources: {} securityContext: + runAsUser: 1000 + runAsGroup: 3000 + fsGroup: 2000 allowPrivilegeEscalation: true capabilities: {} privileged: false