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feat: support podman volatile containers #3684

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feat: support podman volatile containers #3684

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22 changes: 21 additions & 1 deletion container/podman/fs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,8 @@ import (
)

const (
containersJSONFilename = "containers.json"
containersJSONFilename = "containers.json"
volatileContainersJSONFilename = "volatile-containers.json"
)

type containersJSON struct {
Expand All @@ -44,6 +45,25 @@ func rwLayerID(storageDriver docker.StorageDriver, storageDir string, containerI
return "", err
}

// Read volatile-containers.json if it exists.
// This is important for Podman Quadlets since they are not presented in the containers.json file.
volatileData, err := os.ReadFile(filepath.Join(
storageDir,
string(storageDriver)+"-containers",
volatileContainersJSONFilename,
))
if err != nil && !os.IsNotExist(err) {
return "", err
}
if volatileData != nil {
var volatileContainers []containersJSON
err = json.Unmarshal(volatileData, &volatileContainers)
if err != nil {
return "", err
}
containers = append(containers, volatileContainers...)
}

for _, c := range containers {
if c.ID == containerID {
return c.Layer, nil
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