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moby--moby/daemon/changes.go

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package daemon // import "github.com/docker/docker/daemon"
import (
"errors"
"runtime"
"time"
"github.com/docker/docker/pkg/archive"
)
// ContainerChanges returns a list of container fs changes
func (daemon *Daemon) ContainerChanges(name string) ([]archive.Change, error) {
start := time.Now()
container, err := daemon.GetContainer(name)
if err != nil {
return nil, err
}
if runtime.GOOS == "windows" && container.IsRunning() {
return nil, errors.New("Windows does not support diff of a running container")
}
container.Lock()
defer container.Unlock()
if container.RWLayer == nil {
return nil, errors.New("RWLayer of container " + name + " is unexpectedly nil")
}
c, err := container.RWLayer.Changes()
if err != nil {
return nil, err
}
containerActions.WithValues("changes").UpdateSince(start)
return c, nil
}