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

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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, error) {
title := "hcsshim::LayerExists "
logrus.Debugf(title+"path %s", path)
// Call the procedure itself.
var exists uint32
err := layerExists(&stdDriverInfo, path, &exists)
if err != nil {
err = hcserror.Errorf(err, title, "path=%s", path)
logrus.Error(err)
return false, err
}
logrus.Debugf(title+"succeeded path=%s exists=%d", path, exists)
return exists != 0, nil
}