338 lines
9.7 KiB
Go
338 lines
9.7 KiB
Go
package generate
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import (
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"context"
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"os"
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"strings"
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"time"
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"github.com/containers/common/libimage"
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"github.com/containers/common/pkg/config"
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"github.com/containers/podman/v4/libpod"
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"github.com/containers/podman/v4/libpod/define"
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ann "github.com/containers/podman/v4/pkg/annotations"
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envLib "github.com/containers/podman/v4/pkg/env"
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"github.com/containers/podman/v4/pkg/signal"
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"github.com/containers/podman/v4/pkg/specgen"
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spec "github.com/opencontainers/runtime-spec/specs-go"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"golang.org/x/sys/unix"
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)
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func getImageFromSpec(ctx context.Context, r *libpod.Runtime, s *specgen.SpecGenerator) (*libimage.Image, string, *libimage.ImageData, error) {
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if s.Image == "" || s.Rootfs != "" {
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return nil, "", nil, nil
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}
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// Image may already have been set in the generator.
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image, resolvedName := s.GetImage()
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if image != nil {
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inspectData, err := image.Inspect(ctx, nil)
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if err != nil {
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return nil, "", nil, err
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}
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return image, resolvedName, inspectData, nil
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}
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// Need to look up image.
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image, resolvedName, err := r.LibimageRuntime().LookupImage(s.Image, nil)
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if err != nil {
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return nil, "", nil, err
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}
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s.SetImage(image, resolvedName)
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inspectData, err := image.Inspect(ctx, nil)
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if err != nil {
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return nil, "", nil, err
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}
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return image, resolvedName, inspectData, err
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}
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// Fill any missing parts of the spec generator (e.g. from the image).
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// Returns a set of warnings or any fatal error that occurred.
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func CompleteSpec(ctx context.Context, r *libpod.Runtime, s *specgen.SpecGenerator) ([]string, error) {
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// Only add image configuration if we have an image
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newImage, _, inspectData, err := getImageFromSpec(ctx, r, s)
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if err != nil {
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return nil, err
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}
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if inspectData != nil {
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inspectData, err = newImage.Inspect(ctx, nil)
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if err != nil {
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return nil, err
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}
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if s.HealthConfig == nil {
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// NOTE: the health check is only set for Docker images
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// but inspect will take care of it.
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s.HealthConfig = inspectData.HealthCheck
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if s.HealthConfig != nil && s.HealthConfig.Timeout == 0 {
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hct, err := time.ParseDuration(define.DefaultHealthCheckTimeout)
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if err != nil {
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return nil, err
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}
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s.HealthConfig.Timeout = hct
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}
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}
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// Image stop signal
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if s.StopSignal == nil {
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if inspectData.Config.StopSignal != "" {
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sig, err := signal.ParseSignalNameOrNumber(inspectData.Config.StopSignal)
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if err != nil {
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return nil, err
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}
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s.StopSignal = &sig
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}
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}
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}
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rtc, err := r.GetConfigNoCopy()
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if err != nil {
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return nil, err
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}
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// Get Default Environment from containers.conf
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defaultEnvs, err := envLib.ParseSlice(rtc.GetDefaultEnvEx(s.EnvHost, s.HTTPProxy))
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if err != nil {
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return nil, errors.Wrap(err, "error parsing fields in containers.conf")
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}
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var envs map[string]string
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// Image Environment defaults
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if inspectData != nil {
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// Image envs from the image if they don't exist
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// already, overriding the default environments
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envs, err = envLib.ParseSlice(inspectData.Config.Env)
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if err != nil {
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return nil, errors.Wrap(err, "Env fields from image failed to parse")
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}
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defaultEnvs = envLib.Join(envLib.DefaultEnvVariables(), envLib.Join(defaultEnvs, envs))
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}
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for _, e := range s.UnsetEnv {
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delete(defaultEnvs, e)
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}
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if s.UnsetEnvAll {
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defaultEnvs = make(map[string]string)
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}
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// First transform the os env into a map. We need it for the labels later in
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// any case.
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osEnv, err := envLib.ParseSlice(os.Environ())
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if err != nil {
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return nil, errors.Wrap(err, "error parsing host environment variables")
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}
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// Caller Specified defaults
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if s.EnvHost {
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defaultEnvs = envLib.Join(defaultEnvs, osEnv)
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} else if s.HTTPProxy {
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for _, envSpec := range config.ProxyEnv {
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if v, ok := osEnv[envSpec]; ok {
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defaultEnvs[envSpec] = v
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}
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}
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}
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s.Env = envLib.Join(defaultEnvs, s.Env)
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// Labels and Annotations
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annotations := make(map[string]string)
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if newImage != nil {
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labels, err := newImage.Labels(ctx)
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if err != nil {
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return nil, err
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}
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// labels from the image that don't exist already
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if len(labels) > 0 && s.Labels == nil {
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s.Labels = make(map[string]string)
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}
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for k, v := range labels {
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if _, exists := s.Labels[k]; !exists {
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s.Labels[k] = v
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}
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}
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// Add annotations from the image
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for k, v := range inspectData.Annotations {
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if !define.IsReservedAnnotation(k) {
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annotations[k] = v
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}
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}
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}
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// in the event this container is in a pod, and the pod has an infra container
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// we will want to configure it as a type "container" instead defaulting to
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// the behavior of a "sandbox" container
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// In Kata containers:
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// - "sandbox" is the annotation that denotes the container should use its own
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// VM, which is the default behavior
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// - "container" denotes the container should join the VM of the SandboxID
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// (the infra container)
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if len(s.Pod) > 0 {
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annotations[ann.SandboxID] = s.Pod
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annotations[ann.ContainerType] = ann.ContainerTypeContainer
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// Check if this is an init-ctr and if so, check if
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// the pod is running. we do not want to add init-ctrs to
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// a running pod because it creates confusion for us.
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if len(s.InitContainerType) > 0 {
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p, err := r.LookupPod(s.Pod)
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if err != nil {
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return nil, err
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}
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containerStatuses, err := p.Status()
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if err != nil {
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return nil, err
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}
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// If any one of the containers is running, the pod is considered to be
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// running
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for _, con := range containerStatuses {
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if con == define.ContainerStateRunning {
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return nil, errors.New("cannot add init-ctr to a running pod")
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}
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}
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}
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}
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for _, v := range rtc.Containers.Annotations {
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split := strings.SplitN(v, "=", 2)
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k := split[0]
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v := ""
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if len(split) == 2 {
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v = split[1]
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}
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annotations[k] = v
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}
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// now pass in the values from client
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for k, v := range s.Annotations {
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annotations[k] = v
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}
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s.Annotations = annotations
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if len(s.SeccompProfilePath) < 1 {
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p, err := libpod.DefaultSeccompPath()
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if err != nil {
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return nil, err
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}
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s.SeccompProfilePath = p
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}
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if len(s.User) == 0 && inspectData != nil {
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s.User = inspectData.Config.User
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}
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// Unless already set via the CLI, check if we need to disable process
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// labels or set the defaults.
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if len(s.SelinuxOpts) == 0 {
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if err := setLabelOpts(s, r, s.PidNS, s.IpcNS); err != nil {
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return nil, err
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}
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}
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if s.CgroupsMode == "" {
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s.CgroupsMode = rtc.Cgroups()
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}
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// If caller did not specify Pids Limits load default
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if s.ResourceLimits == nil || s.ResourceLimits.Pids == nil {
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if s.CgroupsMode != "disabled" {
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limit := rtc.PidsLimit()
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if limit != 0 {
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if s.ResourceLimits == nil {
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s.ResourceLimits = &spec.LinuxResources{}
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}
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s.ResourceLimits.Pids = &spec.LinuxPids{
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Limit: limit,
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}
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}
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}
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}
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if s.LogConfiguration == nil {
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s.LogConfiguration = &specgen.LogConfig{}
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}
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// set log-driver from common if not already set
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if len(s.LogConfiguration.Driver) < 1 {
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s.LogConfiguration.Driver = rtc.Containers.LogDriver
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}
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if len(rtc.Containers.LogTag) > 0 {
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if s.LogConfiguration.Driver != define.JSONLogging {
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if s.LogConfiguration.Options == nil {
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s.LogConfiguration.Options = make(map[string]string)
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}
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s.LogConfiguration.Options["tag"] = rtc.Containers.LogTag
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} else {
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logrus.Warnf("log_tag %q is not allowed with %q log_driver", rtc.Containers.LogTag, define.JSONLogging)
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}
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}
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warnings, err := verifyContainerResources(s)
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if err != nil {
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return warnings, err
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}
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// Warn on net=host/container/pod/none and port mappings.
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if (s.NetNS.NSMode == specgen.Host || s.NetNS.NSMode == specgen.FromContainer ||
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s.NetNS.NSMode == specgen.FromPod || s.NetNS.NSMode == specgen.NoNetwork) &&
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len(s.PortMappings) > 0 {
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warnings = append(warnings, "Port mappings have been discarded as one of the Host, Container, Pod, and None network modes are in use")
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}
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return warnings, nil
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}
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// FinishThrottleDevices takes the temporary representation of the throttle
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// devices in the specgen and looks up the major and major minors. it then
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// sets the throttle devices proper in the specgen
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func FinishThrottleDevices(s *specgen.SpecGenerator) error {
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if bps := s.ThrottleReadBpsDevice; len(bps) > 0 {
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for k, v := range bps {
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statT := unix.Stat_t{}
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if err := unix.Stat(k, &statT); err != nil {
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return err
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}
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v.Major = (int64(unix.Major(uint64(statT.Rdev))))
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v.Minor = (int64(unix.Minor(uint64(statT.Rdev))))
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if s.ResourceLimits.BlockIO == nil {
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s.ResourceLimits.BlockIO = new(spec.LinuxBlockIO)
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}
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s.ResourceLimits.BlockIO.ThrottleReadBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleReadBpsDevice, v)
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}
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}
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if bps := s.ThrottleWriteBpsDevice; len(bps) > 0 {
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for k, v := range bps {
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statT := unix.Stat_t{}
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if err := unix.Stat(k, &statT); err != nil {
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return err
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}
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v.Major = (int64(unix.Major(uint64(statT.Rdev))))
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v.Minor = (int64(unix.Minor(uint64(statT.Rdev))))
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s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice, v)
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}
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}
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if iops := s.ThrottleReadIOPSDevice; len(iops) > 0 {
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for k, v := range iops {
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statT := unix.Stat_t{}
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if err := unix.Stat(k, &statT); err != nil {
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return err
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}
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v.Major = (int64(unix.Major(uint64(statT.Rdev))))
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v.Minor = (int64(unix.Minor(uint64(statT.Rdev))))
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s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice, v)
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}
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}
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if iops := s.ThrottleWriteIOPSDevice; len(iops) > 0 {
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for k, v := range iops {
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statT := unix.Stat_t{}
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if err := unix.Stat(k, &statT); err != nil {
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return err
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}
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v.Major = (int64(unix.Major(uint64(statT.Rdev))))
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v.Minor = (int64(unix.Minor(uint64(statT.Rdev))))
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s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice, v)
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}
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}
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return nil
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}
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