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- package wclayer
- import (
- "github.com/Microsoft/hcsshim/internal/hcserror"
- "github.com/sirupsen/logrus"
- )
- // LayerExists will return true if a layer with the given id exists and is known
- // to the system.
- func LayerExists(path string) (_ bool, err error) {
- title := "hcsshim::LayerExists"
- 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")
- }
- }()
- // Call the procedure itself.
- var exists uint32
- err = layerExists(&stdDriverInfo, path, &exists)
- if err != nil {
- return false, hcserror.New(err, title+" - failed", "")
- }
- fields["layer-exists"] = exists != 0
- return exists != 0, nil
- }
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