Files
podman/pkg/specgen/generate/container_create.go
Matt Heon 693ae0ebc6 Add support for image volume subpaths
Image volumes (the `--mount type=image,...` kind, not the
`podman volume create --driver image ...` kind - it's strange
that we have two) are needed for our automount scheme, but the
request is that we mount only specific subpaths from the image
into the container. To do that, we need image volume subpath
support. Not that difficult code-wise, mostly just plumbing.

Also, add support to the CLI; not strictly necessary, but it
doesn't hurt anything and will make testing easier.

Signed-off-by: Matt Heon <mheon@redhat.com>
2024-04-25 14:12:27 -04:00

739 lines
23 KiB
Go

//go:build !remote
package generate
import (
"context"
"encoding/json"
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/containers/common/libimage"
"github.com/containers/common/libnetwork/pasta"
"github.com/containers/common/libnetwork/slirp4netns"
"github.com/containers/podman/v5/libpod"
"github.com/containers/podman/v5/libpod/define"
"github.com/containers/podman/v5/pkg/namespaces"
"github.com/containers/podman/v5/pkg/rootless"
"github.com/containers/podman/v5/pkg/specgen"
"github.com/containers/podman/v5/pkg/specgenutil"
"github.com/containers/podman/v5/pkg/util"
"github.com/opencontainers/runtime-spec/specs-go"
"github.com/opencontainers/selinux/go-selinux/label"
"github.com/sirupsen/logrus"
"tags.cncf.io/container-device-interface/pkg/parser"
)
// MakeContainer creates a container based on the SpecGenerator.
// Returns the created, container and any warnings resulting from creating the
// container, or an error.
func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGenerator, clone bool, c *libpod.Container) (*specs.Spec, *specgen.SpecGenerator, []libpod.CtrCreateOption, error) {
rtc, err := rt.GetConfigNoCopy()
if err != nil {
return nil, nil, nil, err
}
rlimits, err := specgenutil.GenRlimits(rtc.Ulimits())
if err != nil {
return nil, nil, nil, err
}
s.Rlimits = append(rlimits, s.Rlimits...)
if s.OOMScoreAdj == nil {
s.OOMScoreAdj = rtc.Containers.OOMScoreAdj
}
if len(rtc.Containers.CgroupConf.Get()) > 0 {
if s.ResourceLimits == nil {
s.ResourceLimits = &specs.LinuxResources{}
}
if s.ResourceLimits.Unified == nil {
s.ResourceLimits.Unified = make(map[string]string)
}
for _, cgroupConf := range rtc.Containers.CgroupConf.Get() {
key, val, hasVal := strings.Cut(cgroupConf, "=")
if !hasVal {
return nil, nil, nil, fmt.Errorf("CgroupConf %s from containers.conf invalid, must be name=value", cgroupConf)
}
if _, ok := s.ResourceLimits.Unified[key]; !ok {
s.ResourceLimits.Unified[key] = val
}
}
}
// If joining a pod, retrieve the pod for use, and its infra container
var pod *libpod.Pod
var infra *libpod.Container
if s.Pod != "" {
pod, err = rt.LookupPod(s.Pod)
if err != nil {
return nil, nil, nil, fmt.Errorf("retrieving pod %s: %w", s.Pod, err)
}
if pod.HasInfraContainer() {
infra, err = pod.InfraContainer()
if err != nil {
return nil, nil, nil, err
}
}
}
options := []libpod.CtrCreateOption{}
compatibleOptions := &libpod.InfraInherit{}
var infraSpec *specs.Spec
if infra != nil {
options, infraSpec, compatibleOptions, err = Inherit(infra, s, rt)
if err != nil {
return nil, nil, nil, err
}
}
if err := specgen.FinishThrottleDevices(s); err != nil {
return nil, nil, nil, err
}
// Set defaults for unset namespaces
if s.PidNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("pid", rtc, pod)
if err != nil {
return nil, nil, nil, err
}
s.PidNS = defaultNS
}
if s.IpcNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("ipc", rtc, pod)
if err != nil {
return nil, nil, nil, err
}
s.IpcNS = defaultNS
}
if s.UtsNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("uts", rtc, pod)
if err != nil {
return nil, nil, nil, err
}
s.UtsNS = defaultNS
}
if s.UserNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("user", rtc, pod)
if err != nil {
return nil, nil, nil, err
}
s.UserNS = defaultNS
value := string(s.UserNS.NSMode)
if s.UserNS.Value != "" {
value = value + ":" + s.UserNS.Value
}
mappings, err := util.ParseIDMapping(namespaces.UsernsMode(value), nil, nil, "", "")
if err != nil {
return nil, nil, nil, err
}
s.IDMappings = mappings
}
if s.NetNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("net", rtc, pod)
if err != nil {
return nil, nil, nil, err
}
s.NetNS = defaultNS
}
if s.CgroupNS.IsDefault() {
defaultNS, err := GetDefaultNamespaceMode("cgroup", rtc, pod)
if err != nil {
return nil, nil, nil, err
}
s.CgroupNS = defaultNS
}
if s.ContainerCreateCommand != nil {
options = append(options, libpod.WithCreateCommand(s.ContainerCreateCommand))
}
if s.Rootfs != "" {
rootfsOverlay := false
if s.RootfsOverlay != nil {
rootfsOverlay = *s.RootfsOverlay
}
options = append(options, libpod.WithRootFS(s.Rootfs, rootfsOverlay, s.RootfsMapping))
}
newImage, resolvedImageName, imageData, err := getImageFromSpec(ctx, rt, s)
if err != nil {
return nil, nil, nil, err
}
if imageData != nil {
ociRuntimeVariant := rtc.Engine.ImagePlatformToRuntime(imageData.Os, imageData.Architecture)
// Don't unnecessarily set and invoke additional libpod
// option if OCI runtime is still default.
if ociRuntimeVariant != rtc.Engine.OCIRuntime {
options = append(options, libpod.WithCtrOCIRuntime(ociRuntimeVariant))
}
}
if newImage != nil {
// If the input name changed, we could properly resolve the
// image. Otherwise, it must have been an ID where we're
// defaulting to the first name or an empty one if no names are
// present.
if strings.HasPrefix(newImage.ID(), resolvedImageName) {
names := newImage.Names()
if len(names) > 0 {
resolvedImageName = names[0]
}
}
options = append(options, libpod.WithRootFSFromImage(newImage.ID(), resolvedImageName, s.RawImageName))
}
_, err = rt.LookupPod(s.Hostname)
if len(s.Hostname) > 0 && !s.UtsNS.IsPrivate() && err == nil {
// ok, we are incorrectly setting the pod as the hostname, let's undo that before validation
s.Hostname = ""
}
// Set defaults if network info is not provided
if s.NetNS.IsPrivate() || s.NetNS.IsDefault() {
if rootless.IsRootless() {
// when we are rootless we default to default_rootless_network_cmd from containers.conf
conf, err := rt.GetConfigNoCopy()
if err != nil {
return nil, nil, nil, err
}
switch conf.Network.DefaultRootlessNetworkCmd {
case slirp4netns.BinaryName, "":
s.NetNS.NSMode = specgen.Slirp
case pasta.BinaryName:
s.NetNS.NSMode = specgen.Pasta
default:
return nil, nil, nil, fmt.Errorf("invalid default_rootless_network_cmd option %q",
conf.Network.DefaultRootlessNetworkCmd)
}
} else {
// as root default to bridge
s.NetNS.NSMode = specgen.Bridge
}
}
if err := s.Validate(); err != nil {
return nil, nil, nil, fmt.Errorf("invalid config provided: %w", err)
}
finalMounts, finalVolumes, finalOverlays, err := finalizeMounts(ctx, s, rt, rtc, newImage)
if err != nil {
return nil, nil, nil, err
}
if len(s.HostUsers) > 0 {
options = append(options, libpod.WithHostUsers(s.HostUsers))
}
command := makeCommand(s, imageData)
infraVol := len(compatibleOptions.Mounts) > 0 || len(compatibleOptions.Volumes) > 0 || len(compatibleOptions.ImageVolumes) > 0 || len(compatibleOptions.OverlayVolumes) > 0
opts, err := createContainerOptions(rt, s, pod, finalVolumes, finalOverlays, imageData, command, infraVol, *compatibleOptions)
if err != nil {
return nil, nil, nil, err
}
options = append(options, opts...)
if containerType := s.InitContainerType; len(containerType) > 0 {
options = append(options, libpod.WithInitCtrType(containerType))
}
if len(s.Name) > 0 {
logrus.Debugf("setting container name %s", s.Name)
options = append(options, libpod.WithName(s.Name))
}
if len(s.Devices) > 0 {
opts = ExtractCDIDevices(s)
options = append(options, opts...)
}
runtimeSpec, err := SpecGenToOCI(ctx, s, rt, rtc, newImage, finalMounts, pod, command, compatibleOptions)
if err != nil {
return nil, nil, nil, err
}
if clone { // the container fails to start if cloned due to missing Linux spec entries
if c == nil {
return nil, nil, nil, errors.New("the given container could not be retrieved")
}
conf := c.Config()
if conf != nil && conf.Spec != nil && conf.Spec.Linux != nil {
out, err := json.Marshal(conf.Spec.Linux)
if err != nil {
return nil, nil, nil, err
}
resources := runtimeSpec.Linux.Resources
// resources get overwritten similarly to pod inheritance, manually assign here if there is a new value
marshalRes, err := json.Marshal(resources)
if err != nil {
return nil, nil, nil, err
}
err = json.Unmarshal(out, runtimeSpec.Linux)
if err != nil {
return nil, nil, nil, err
}
err = json.Unmarshal(marshalRes, runtimeSpec.Linux.Resources)
if err != nil {
return nil, nil, nil, err
}
}
if s.ResourceLimits != nil {
switch {
case s.ResourceLimits.CPU != nil:
runtimeSpec.Linux.Resources.CPU = s.ResourceLimits.CPU
case s.ResourceLimits.Memory != nil:
runtimeSpec.Linux.Resources.Memory = s.ResourceLimits.Memory
case s.ResourceLimits.BlockIO != nil:
runtimeSpec.Linux.Resources.BlockIO = s.ResourceLimits.BlockIO
case s.ResourceLimits.Devices != nil:
runtimeSpec.Linux.Resources.Devices = s.ResourceLimits.Devices
}
}
}
if len(s.HostDeviceList) > 0 {
options = append(options, libpod.WithHostDevice(s.HostDeviceList))
}
if infraSpec != nil && infraSpec.Linux != nil { // if we are inheriting Linux info from a pod...
// Pass Security annotations
if len(infraSpec.Annotations[define.InspectAnnotationLabel]) > 0 && len(runtimeSpec.Annotations[define.InspectAnnotationLabel]) == 0 {
runtimeSpec.Annotations[define.InspectAnnotationLabel] = infraSpec.Annotations[define.InspectAnnotationLabel]
}
if len(infraSpec.Annotations[define.InspectAnnotationSeccomp]) > 0 && len(runtimeSpec.Annotations[define.InspectAnnotationSeccomp]) == 0 {
runtimeSpec.Annotations[define.InspectAnnotationSeccomp] = infraSpec.Annotations[define.InspectAnnotationSeccomp]
}
if len(infraSpec.Annotations[define.InspectAnnotationApparmor]) > 0 && len(runtimeSpec.Annotations[define.InspectAnnotationApparmor]) == 0 {
runtimeSpec.Annotations[define.InspectAnnotationApparmor] = infraSpec.Annotations[define.InspectAnnotationApparmor]
}
}
return runtimeSpec, s, options, err
}
func ExecuteCreate(ctx context.Context, rt *libpod.Runtime, runtimeSpec *specs.Spec, s *specgen.SpecGenerator, infra bool, options ...libpod.CtrCreateOption) (*libpod.Container, error) {
ctr, err := rt.NewContainer(ctx, runtimeSpec, s, infra, options...)
if err != nil {
return ctr, err
}
return ctr, rt.PrepareVolumeOnCreateContainer(ctx, ctr)
}
// ExtractCDIDevices process the list of Devices in the spec and determines if any of these are CDI devices.
// The CDI devices are added to the list of CtrCreateOptions.
// Note that this may modify the device list associated with the spec, which should then only contain non-CDI devices.
func ExtractCDIDevices(s *specgen.SpecGenerator) []libpod.CtrCreateOption {
devs := make([]specs.LinuxDevice, 0, len(s.Devices))
var cdiDevs []string
var options []libpod.CtrCreateOption
for _, device := range s.Devices {
if isCDIDevice(device.Path) {
logrus.Debugf("Identified CDI device %v", device.Path)
cdiDevs = append(cdiDevs, device.Path)
continue
}
logrus.Debugf("Non-CDI device %v; assuming standard device", device.Path)
devs = append(devs, device)
}
s.Devices = devs
if len(cdiDevs) > 0 {
options = append(options, libpod.WithCDI(cdiDevs))
}
return options
}
// isCDIDevice checks whether the specified device is a CDI device.
func isCDIDevice(device string) bool {
return parser.IsQualifiedName(device)
}
func createContainerOptions(rt *libpod.Runtime, s *specgen.SpecGenerator, pod *libpod.Pod, volumes []*specgen.NamedVolume, overlays []*specgen.OverlayVolume, imageData *libimage.ImageData, command []string, infraVolumes bool, compatibleOptions libpod.InfraInherit) ([]libpod.CtrCreateOption, error) {
var options []libpod.CtrCreateOption
var err error
if s.PreserveFDs > 0 {
options = append(options, libpod.WithPreserveFDs(s.PreserveFDs))
}
if s.PreserveFD != nil {
options = append(options, libpod.WithPreserveFD(s.PreserveFD))
}
if s.Stdin != nil && *s.Stdin {
options = append(options, libpod.WithStdin())
}
if s.Timezone != "" {
options = append(options, libpod.WithTimezone(s.Timezone))
}
if s.Umask != "" {
options = append(options, libpod.WithUmask(s.Umask))
}
if s.Volatile != nil && *s.Volatile {
options = append(options, libpod.WithVolatile())
}
if s.PasswdEntry != "" {
options = append(options, libpod.WithPasswdEntry(s.PasswdEntry))
}
if s.GroupEntry != "" {
options = append(options, libpod.WithGroupEntry(s.GroupEntry))
}
if s.BaseHostsFile != "" {
options = append(options, libpod.WithBaseHostsFile(s.BaseHostsFile))
}
if s.IsPrivileged() {
options = append(options, libpod.WithMountAllDevices())
}
useSystemd := false
switch s.Systemd {
case "always":
useSystemd = true
case "false":
break
case "", "true":
if len(command) == 0 && imageData != nil {
command = imageData.Config.Cmd
}
if len(command) > 0 {
useSystemdCommands := map[string]bool{
"/sbin/init": true,
"/usr/sbin/init": true,
"/usr/local/sbin/init": true,
}
// Grab last command in case this is launched from a shell
cmd := command
if len(command) > 2 {
// Podman build will add "/bin/sh" "-c" to
// Entrypoint. Remove and search for systemd
if command[0] == "/bin/sh" && command[1] == "-c" {
cmd = command[2:]
}
}
if useSystemdCommands[cmd[0]] || (filepath.Base(cmd[0]) == "systemd") {
useSystemd = true
}
}
default:
return nil, fmt.Errorf("invalid value %q systemd option requires 'true, false, always': %w", s.Systemd, err)
}
logrus.Debugf("using systemd mode: %t", useSystemd)
if useSystemd {
// is StopSignal was not set by the user then set it to systemd
// expected StopSigal
if s.StopSignal == nil {
stopSignal, err := util.ParseSignal("RTMIN+3")
if err != nil {
return nil, fmt.Errorf("parsing systemd signal: %w", err)
}
s.StopSignal = &stopSignal
}
options = append(options, libpod.WithSystemd())
}
if len(s.SdNotifyMode) > 0 {
options = append(options, libpod.WithSdNotifyMode(s.SdNotifyMode))
if s.SdNotifyMode != define.SdNotifyModeIgnore {
if notify, ok := os.LookupEnv("NOTIFY_SOCKET"); ok {
options = append(options, libpod.WithSdNotifySocket(notify))
}
}
}
if pod != nil {
logrus.Debugf("adding container to pod %s", pod.Name())
options = append(options, rt.WithPod(pod))
}
destinations := []string{}
// Take all mount and named volume destinations.
for _, mount := range s.Mounts {
destinations = append(destinations, mount.Destination)
}
for _, volume := range volumes {
destinations = append(destinations, volume.Dest)
}
for _, overlayVolume := range overlays {
destinations = append(destinations, overlayVolume.Destination)
}
for _, imageVolume := range s.ImageVolumes {
destinations = append(destinations, imageVolume.Destination)
}
if len(destinations) > 0 || !infraVolumes {
options = append(options, libpod.WithUserVolumes(destinations))
}
if len(volumes) != 0 {
var vols []*libpod.ContainerNamedVolume
for _, v := range volumes {
vols = append(vols, &libpod.ContainerNamedVolume{
Name: v.Name,
Dest: v.Dest,
Options: v.Options,
IsAnonymous: v.IsAnonymous,
SubPath: v.SubPath,
})
}
options = append(options, libpod.WithNamedVolumes(vols))
}
if len(overlays) != 0 {
var vols []*libpod.ContainerOverlayVolume
for _, v := range overlays {
vols = append(vols, &libpod.ContainerOverlayVolume{
Dest: v.Destination,
Source: v.Source,
Options: v.Options,
})
}
options = append(options, libpod.WithOverlayVolumes(vols))
}
if len(s.ImageVolumes) != 0 {
var vols []*libpod.ContainerImageVolume
for _, v := range s.ImageVolumes {
vols = append(vols, &libpod.ContainerImageVolume{
Dest: v.Destination,
Source: v.Source,
ReadWrite: v.ReadWrite,
SubPath: v.SubPath,
})
}
options = append(options, libpod.WithImageVolumes(vols))
}
if s.Command != nil {
options = append(options, libpod.WithCommand(s.Command))
}
if s.Entrypoint != nil {
options = append(options, libpod.WithEntrypoint(s.Entrypoint))
}
if len(s.ContainerStorageConfig.StorageOpts) > 0 {
options = append(options, libpod.WithStorageOpts(s.StorageOpts))
}
// If the user did not specify a workdir on the CLI, let's extract it
// from the image.
if s.WorkDir == "" && imageData != nil {
options = append(options, libpod.WithCreateWorkingDir())
s.WorkDir = imageData.Config.WorkingDir
}
if s.WorkDir == "" {
s.WorkDir = "/"
}
if s.CreateWorkingDir != nil && *s.CreateWorkingDir {
options = append(options, libpod.WithCreateWorkingDir())
}
if s.StopSignal != nil {
options = append(options, libpod.WithStopSignal(*s.StopSignal))
}
if s.StopTimeout != nil {
options = append(options, libpod.WithStopTimeout(*s.StopTimeout))
}
if s.Timeout != 0 {
options = append(options, libpod.WithTimeout(s.Timeout))
}
if s.LogConfiguration != nil {
if len(s.LogConfiguration.Path) > 0 {
options = append(options, libpod.WithLogPath(s.LogConfiguration.Path))
}
if s.LogConfiguration.Size > 0 {
options = append(options, libpod.WithMaxLogSize(s.LogConfiguration.Size))
}
if len(s.LogConfiguration.Options) > 0 && s.LogConfiguration.Options["tag"] != "" {
options = append(options, libpod.WithLogTag(s.LogConfiguration.Options["tag"]))
}
if len(s.LogConfiguration.Driver) > 0 {
options = append(options, libpod.WithLogDriver(s.LogConfiguration.Driver))
}
}
if s.LabelNested != nil {
options = append(options, libpod.WithLabelNested(*s.LabelNested))
}
// Security options
if len(s.SelinuxOpts) > 0 {
options = append(options, libpod.WithSecLabels(s.SelinuxOpts))
} else if pod != nil && len(compatibleOptions.SelinuxOpts) == 0 {
// duplicate the security options from the pod
processLabel, err := pod.ProcessLabel()
if err != nil {
return nil, err
}
if processLabel != "" {
selinuxOpts, err := label.DupSecOpt(processLabel)
if err != nil {
return nil, err
}
options = append(options, libpod.WithSecLabels(selinuxOpts))
}
}
options = append(options, libpod.WithPrivileged(s.IsPrivileged()))
if s.ReadWriteTmpfs != nil {
options = append(options, libpod.WithReadWriteTmpfs(*s.ReadWriteTmpfs))
}
// Get namespace related options
namespaceOpts, err := namespaceOptions(s, rt, pod, imageData)
if err != nil {
return nil, err
}
options = append(options, namespaceOpts...)
if len(s.ConmonPidFile) > 0 {
options = append(options, libpod.WithConmonPidFile(s.ConmonPidFile))
}
options = append(options, libpod.WithLabels(s.Labels))
if s.ShmSize != nil {
options = append(options, libpod.WithShmSize(*s.ShmSize))
}
if s.ShmSizeSystemd != nil {
options = append(options, libpod.WithShmSizeSystemd(*s.ShmSizeSystemd))
}
if s.Rootfs != "" {
rootfsOverlay := false
if s.RootfsOverlay != nil {
rootfsOverlay = *s.RootfsOverlay
}
options = append(options, libpod.WithRootFS(s.Rootfs, rootfsOverlay, s.RootfsMapping))
}
// Default used if not overridden on command line
var (
restartPolicy string
retries uint
)
// If the container is running in a pod, use the pod's restart policy for all the containers
if pod != nil && !s.IsInitContainer() && s.RestartPolicy == "" {
podConfig := pod.ConfigNoCopy()
if podConfig.RestartRetries != nil {
retries = *podConfig.RestartRetries
}
restartPolicy = podConfig.RestartPolicy
} else if s.RestartPolicy != "" {
if s.RestartRetries != nil {
retries = *s.RestartRetries
}
restartPolicy = s.RestartPolicy
}
if restartPolicy != "" {
options = append(options, libpod.WithRestartPolicy(restartPolicy))
}
if retries != 0 {
options = append(options, libpod.WithRestartRetries(retries))
}
healthCheckSet := false
if s.ContainerHealthCheckConfig.HealthConfig != nil {
options = append(options, libpod.WithHealthCheck(s.ContainerHealthCheckConfig.HealthConfig))
logrus.Debugf("New container has a health check")
healthCheckSet = true
}
if s.ContainerHealthCheckConfig.StartupHealthConfig != nil {
options = append(options, libpod.WithStartupHealthcheck(s.ContainerHealthCheckConfig.StartupHealthConfig))
healthCheckSet = true
}
if s.ContainerHealthCheckConfig.HealthCheckOnFailureAction != define.HealthCheckOnFailureActionNone {
options = append(options, libpod.WithHealthCheckOnFailureAction(s.ContainerHealthCheckConfig.HealthCheckOnFailureAction))
}
if s.SdNotifyMode == define.SdNotifyModeHealthy && !healthCheckSet {
return nil, fmt.Errorf("%w: sdnotify policy %q requires a healthcheck to be set", define.ErrInvalidArg, s.SdNotifyMode)
}
if len(s.Secrets) != 0 {
manager, err := rt.SecretsManager()
if err != nil {
return nil, err
}
var secrs []*libpod.ContainerSecret
for _, s := range s.Secrets {
secr, err := manager.Lookup(s.Source)
if err != nil {
return nil, err
}
secrs = append(secrs, &libpod.ContainerSecret{
Secret: secr,
UID: s.UID,
GID: s.GID,
Mode: s.Mode,
Target: s.Target,
})
}
options = append(options, libpod.WithSecrets(secrs))
}
if len(s.EnvSecrets) != 0 {
options = append(options, libpod.WithEnvSecrets(s.EnvSecrets))
}
if len(s.DependencyContainers) > 0 {
deps := make([]*libpod.Container, 0, len(s.DependencyContainers))
for _, ctr := range s.DependencyContainers {
depCtr, err := rt.LookupContainer(ctr)
if err != nil {
return nil, fmt.Errorf("%q is not a valid container, cannot be used as a dependency: %w", ctr, err)
}
deps = append(deps, depCtr)
}
options = append(options, libpod.WithDependencyCtrs(deps))
}
if s.PidFile != "" {
options = append(options, libpod.WithPidFile(s.PidFile))
}
if len(s.ChrootDirs) != 0 {
options = append(options, libpod.WithChrootDirs(s.ChrootDirs))
}
options = append(options, libpod.WithSelectedPasswordManagement(s.Passwd))
return options, nil
}
func Inherit(infra *libpod.Container, s *specgen.SpecGenerator, rt *libpod.Runtime) (opts []libpod.CtrCreateOption, infraS *specs.Spec, compat *libpod.InfraInherit, err error) {
inheritSpec := &specgen.SpecGenerator{}
_, compatibleOptions, err := ConfigToSpec(rt, inheritSpec, infra.ID())
if err != nil {
return nil, nil, nil, err
}
options := []libpod.CtrCreateOption{}
infraConf := infra.Config()
infraSpec := infraConf.Spec
// need to set compatOptions to the currently filled specgenOptions so we do not overwrite
compatibleOptions.CapAdd = append(compatibleOptions.CapAdd, s.CapAdd...)
compatibleOptions.CapDrop = append(compatibleOptions.CapDrop, s.CapDrop...)
compatibleOptions.HostDeviceList = append(compatibleOptions.HostDeviceList, s.HostDeviceList...)
compatibleOptions.ImageVolumes = append(compatibleOptions.ImageVolumes, s.ImageVolumes...)
compatibleOptions.Mounts = append(compatibleOptions.Mounts, s.Mounts...)
compatibleOptions.OverlayVolumes = append(compatibleOptions.OverlayVolumes, s.OverlayVolumes...)
compatibleOptions.SelinuxOpts = append(compatibleOptions.SelinuxOpts, s.SelinuxOpts...)
compatibleOptions.Volumes = append(compatibleOptions.Volumes, s.Volumes...)
compatByte, err := json.Marshal(compatibleOptions)
if err != nil {
return nil, nil, nil, err
}
err = json.Unmarshal(compatByte, s)
if err != nil {
return nil, nil, nil, err
}
// podman pod container can override pod ipc NS
if !s.IpcNS.IsDefault() {
inheritSpec.IpcNS = s.IpcNS
}
// this causes errors when shmSize is the default value, it will still get passed down unless we manually override.
if inheritSpec.IpcNS.NSMode == specgen.Host && (compatibleOptions.ShmSize != nil && compatibleOptions.IsDefaultShmSize()) {
s.ShmSize = nil
}
return options, infraSpec, compatibleOptions, nil
}