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package daemon
import (
"context"
"fmt"
"github.com/docker/docker/container"
"github.com/docker/docker/daemon/config"
"github.com/docker/docker/errdefs"
"github.com/docker/docker/libcontainerd/types"
"github.com/docker/docker/oci"
"github.com/opencontainers/runtime-spec/specs-go"
)
// initializeCreatedTask performs any initialization that needs to be done to
// prepare a freshly-created task to be started.
func (daemon *Daemon) initializeCreatedTask(
ctx context.Context,
cfg *config.Config,
tsk types.Task,
ctr *container.Container,
spec *specs.Spec,
) error {
if ctr.Config.NetworkDisabled {
return nil
}
nspath, ok := oci.NamespacePath(spec, specs.NetworkNamespace)
if ok && nspath == "" { // the runtime has been instructed to create a new network namespace for tsk.
sb, err := daemon.netController.GetSandbox(ctr.ID)
if err != nil {
return errdefs.System(err)
}
if err := sb.SetKey(ctx, fmt.Sprintf("/proc/%d/ns/net", tsk.Pid())); err != nil {
return errdefs.System(err)
}
}
if err := daemon.allocateNetwork(ctx, cfg, ctr); err != nil {
return fmt.Errorf("%s: %w", errSetupNetworking, err)
}
return nil
}
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