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package generate
import (
"context"
"github.com/containers/libpod/libpod"
ann "github.com/containers/libpod/pkg/annotations"
envLib "github.com/containers/libpod/pkg/env"
"github.com/containers/libpod/pkg/signal"
"github.com/containers/libpod/pkg/specgen"
"github.com/pkg/errors"
"golang.org/x/sys/unix"
)
func CompleteSpec(ctx context.Context, r *libpod.Runtime, s *specgen.SpecGenerator) error {
newImage, err := r.ImageRuntime().NewFromLocal(s.Image)
if err != nil {
return err
}
// Image stop signal
if s.StopSignal == nil && newImage.Config != nil {
sig, err := signal.ParseSignalNameOrNumber(newImage.Config.StopSignal)
if err != nil {
return err
}
s.StopSignal = &sig
}
// Image envs from the image if they don't exist
// already
if newImage.Config != nil && len(newImage.Config.Env) > 0 {
envs, err := envLib.ParseSlice(newImage.Config.Env)
if err != nil {
return err
}
for k, v := range envs {
if _, exists := s.Env[k]; !exists {
s.Env[v] = k
}
}
}
// labels from the image that dont exist already
if config := newImage.Config; config != nil {
for k, v := range config.Labels {
if _, exists := s.Labels[k]; !exists {
s.Labels[k] = v
}
}
}
// annotations
// in the event this container is in a pod, and the pod has an infra container
// we will want to configure it as a type "container" instead defaulting to
// the behavior of a "sandbox" container
// In Kata containers:
// - "sandbox" is the annotation that denotes the container should use its own
// VM, which is the default behavior
// - "container" denotes the container should join the VM of the SandboxID
// (the infra container)
s.Annotations = make(map[string]string)
if len(s.Pod) > 0 {
s.Annotations[ann.SandboxID] = s.Pod
s.Annotations[ann.ContainerType] = ann.ContainerTypeContainer
}
//
// Next, add annotations from the image
annotations, err := newImage.Annotations(ctx)
if err != nil {
return err
}
for k, v := range annotations {
annotations[k] = v
}
// entrypoint
if config := newImage.Config; config != nil {
if len(s.Entrypoint) < 1 && len(config.Entrypoint) > 0 {
s.Entrypoint = config.Entrypoint
}
if len(s.Command) < 1 && len(config.Cmd) > 0 {
s.Command = config.Cmd
}
if len(s.Command) < 1 && len(s.Entrypoint) < 1 {
return errors.Errorf("No command provided or as CMD or ENTRYPOINT in this image")
}
// workdir
if len(s.WorkDir) < 1 && len(config.WorkingDir) > 1 {
s.WorkDir = config.WorkingDir
}
}
if len(s.SeccompProfilePath) < 1 {
p, err := libpod.DefaultSeccompPath()
if err != nil {
return err
}
s.SeccompProfilePath = p
}
if user := s.User; len(user) == 0 {
switch {
// TODO This should be enabled when namespaces actually work
//case usernsMode.IsKeepID():
// user = fmt.Sprintf("%d:%d", rootless.GetRootlessUID(), rootless.GetRootlessGID())
case newImage.Config == nil || (newImage.Config != nil && len(newImage.Config.User) == 0):
s.User = "0"
default:
s.User = newImage.Config.User
}
}
if err := finishThrottleDevices(s); err != nil {
return err
}
// Unless already set via the CLI, check if we need to disable process
// labels or set the defaults.
if len(s.SelinuxOpts) == 0 {
if err := SetLabelOpts(s, r, s.PidNS, s.IpcNS); err != nil {
return err
}
}
return nil
}
// finishThrottleDevices takes the temporary representation of the throttle
// devices in the specgen and looks up the major and major minors. it then
// sets the throttle devices proper in the specgen
func finishThrottleDevices(s *specgen.SpecGenerator) error {
if bps := s.ThrottleReadBpsDevice; len(bps) > 0 {
for k, v := range bps {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleReadBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleReadBpsDevice, v)
}
}
if bps := s.ThrottleWriteBpsDevice; len(bps) > 0 {
for k, v := range bps {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice, v)
}
}
if iops := s.ThrottleReadIOPSDevice; len(iops) > 0 {
for k, v := range iops {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice, v)
}
}
if iops := s.ThrottleWriteBpsDevice; len(iops) > 0 {
for k, v := range iops {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice, v)
}
}
return nil
}
|
