containerd/vendor/github.com/Microsoft/hcsshim/internal/wclayer/layerexists.go
Daniel Canter 1f8db2467b go.mod: Bump hcsshim to v0.10.0-rc.1
This contains quite a bit (also bumps google/uuid to 1.3.0). Some HostProcess
container improvements to get ready for whenever it goes to stable in
Kubernetes, Hyper-V (windows) container support for CRI, and a plethora of
other small additions and fixes.

Signed-off-by: Daniel Canter <dcanter@microsoft.com>
2022-08-15 17:03:45 -07:00

31 lines
844 B
Go

//go:build windows
package wclayer
import (
"context"
"github.com/Microsoft/hcsshim/internal/hcserror"
"github.com/Microsoft/hcsshim/internal/oc"
"go.opencensus.io/trace"
)
// LayerExists will return true if a layer with the given id exists and is known
// to the system.
func LayerExists(ctx context.Context, path string) (_ bool, err error) {
title := "hcsshim::LayerExists"
ctx, span := oc.StartSpan(ctx, title) //nolint:ineffassign,staticcheck
defer span.End()
defer func() { oc.SetSpanStatus(span, err) }()
span.AddAttributes(trace.StringAttribute("path", path))
// Call the procedure itself.
var exists uint32
err = layerExists(&stdDriverInfo, path, &exists)
if err != nil {
return false, hcserror.New(err, title, "")
}
span.AddAttributes(trace.BoolAttribute("layer-exists", exists != 0))
return exists != 0, nil
}