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package utils
import (
"fmt"
"github.com/checkpoint-restore/go-criu/v7"
"github.com/checkpoint-restore/go-criu/v7/rpc"
"google.golang.org/protobuf/proto"
)
// CheckForCRIU checks if CRIU is available and if it is as least the
// version as specified in the "version" parameter.
func CheckForCriu(version int) error {
criuVersion, err := GetCriuVersion()
if err != nil {
return fmt.Errorf("failed to check for criu version: %w", err)
}
if criuVersion >= version {
return nil
}
return fmt.Errorf("checkpoint/restore requires at least CRIU %d, current version is %d", version, criuVersion)
}
// Convenience function to easily check if memory tracking is supported.
func IsMemTrack() bool {
features, err := criu.MakeCriu().FeatureCheck(
&rpc.CriuFeatures{
MemTrack: proto.Bool(true),
},
)
if err != nil {
return false
}
return features.GetMemTrack()
}
func GetCriuVersion() (int, error) {
c := criu.MakeCriu()
return c.GetCriuVersion()
}
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