1 files changed, 31 insertions, 0 deletions
diff --git a/libcontainerd/oom_linux.go b/libcontainerd/oom_linux.go
new file mode 100644
index 0000000..e126b7a
--- /dev/null
+++ b/libcontainerd/oom_linux.go
@@ -0,0 +1,31 @@
+package libcontainerd
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/opencontainers/runc/libcontainer/system"
+)
+
+func setOOMScore(pid, score int) error {
+	oomScoreAdjPath := fmt.Sprintf("/proc/%d/oom_score_adj", pid)
+	f, err := os.OpenFile(oomScoreAdjPath, os.O_WRONLY, 0)
+	if err != nil {
+		return err
+	}
+	stringScore := strconv.Itoa(score)
+	_, err = f.WriteString(stringScore)
+	f.Close()
+	if os.IsPermission(err) {
+		// Setting oom_score_adj does not work in an
+		// unprivileged container. Ignore the error, but log
+		// it if we appear not to be in that situation.
+		if !system.RunningInUserNS() {
+			logrus.Debugf("Permission denied writing %q to %s", stringScore, oomScoreAdjPath)
+		}
+		return nil
+	}
+	return err
+}