vendor: update c/common

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

vendor/github.com/opencontainers/cgroups/fs2/misc.go

@@ -0,0 +1,52 @@
+package fs2
+
+import (
+	"bufio"
+	"os"
+	"strings"
+
+	"github.com/opencontainers/cgroups"
+	"github.com/opencontainers/cgroups/fscommon"
+)
+
+func statMisc(dirPath string, stats *cgroups.Stats) error {
+	for _, file := range []string{"current", "events"} {
+		fd, err := cgroups.OpenFile(dirPath, "misc."+file, os.O_RDONLY)
+		if err != nil {
+			return err
+		}
+
+		s := bufio.NewScanner(fd)
+		for s.Scan() {
+			key, value, err := fscommon.ParseKeyValue(s.Text())
+			if err != nil {
+				fd.Close()
+				return err
+			}
+
+			key = strings.TrimSuffix(key, ".max")
+
+			if _, ok := stats.MiscStats[key]; !ok {
+				stats.MiscStats[key] = cgroups.MiscStats{}
+			}
+
+			tmp := stats.MiscStats[key]
+
+			switch file {
+			case "current":
+				tmp.Usage = value
+			case "events":
+				tmp.Events = value
+			}
+
+			stats.MiscStats[key] = tmp
+		}
+		fd.Close()
+
+		if err := s.Err(); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}