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

28 lines
858 B
Go

package wclayer
import (
"context"
"github.com/Microsoft/hcsshim/internal/hcserror"
"github.com/Microsoft/hcsshim/internal/oc"
"go.opencensus.io/trace"
)
// ActivateLayer will find the layer with the given id and mount it's filesystem.
// For a read/write layer, the mounted filesystem will appear as a volume on the
// host, while a read-only layer is generally expected to be a no-op.
// An activated layer must later be deactivated via DeactivateLayer.
func ActivateLayer(ctx context.Context, path string) (err error) {
title := "hcsshim::ActivateLayer"
ctx, span := trace.StartSpan(ctx, title)
defer span.End()
defer func() { oc.SetSpanStatus(span, err) }()
span.AddAttributes(trace.StringAttribute("path", path))
err = activateLayer(&stdDriverInfo, path)
if err != nil {
return hcserror.New(err, title+" - failed", "")
}
return nil
}