DockerCLI/vendor/github.com/Microsoft/hcsshim/internal/wclayer/createscratchlayer.go

39 lines
1.0 KiB
Go

package wclayer
import (
"github.com/Microsoft/hcsshim/internal/hcserror"
"github.com/sirupsen/logrus"
)
// CreateScratchLayer creates and populates new read-write layer for use by a container.
// This requires both the id of the direct parent layer, as well as the full list
// of paths to all parent layers up to the base (and including the direct parent
// whose id was provided).
func CreateScratchLayer(path string, parentLayerPaths []string) (err error) {
title := "hcsshim::CreateScratchLayer"
fields := logrus.Fields{
"path": path,
}
logrus.WithFields(fields).Debug(title)
defer func() {
if err != nil {
fields[logrus.ErrorKey] = err
logrus.WithFields(fields).Error(err)
} else {
logrus.WithFields(fields).Debug(title + " - succeeded")
}
}()
// Generate layer descriptors
layers, err := layerPathsToDescriptors(parentLayerPaths)
if err != nil {
return err
}
err = createSandboxLayer(&stdDriverInfo, path, 0, layers)
if err != nil {
return hcserror.New(err, title+" - failed", "")
}
return nil
}