1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
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 := trace.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+" - failed", "")
}
span.AddAttributes(trace.BoolAttribute("layer-exists", exists != 0))
return exists != 0, nil
}
|
