3 files changed, 59 insertions, 1 deletions
diff --git a/pkg/util/mountOpts.go b/pkg/util/mountOpts.go
index eab2657e3..580aaf4f2 100644
--- a/pkg/util/mountOpts.go
+++ b/pkg/util/mountOpts.go
@@ -57,7 +57,7 @@ func ProcessOptions(options []string, isTmpfs bool, sourcePath string) ([]string
 				return nil, errors.Wrapf(ErrDupeMntOption, "only one of 'rw' and 'ro' can be used")
 			}
 			foundWrite = true
-		case "private", "rprivate", "slave", "rslave", "shared", "rshared":
+		case "private", "rprivate", "slave", "rslave", "shared", "rshared", "unbindable", "runbindable":
 			if foundProp {
 				return nil, errors.Wrapf(ErrDupeMntOption, "only one root propagation mode can be used")
 			}
diff --git a/pkg/util/utils.go b/pkg/util/utils.go
index 91aba9fa7..415fd169b 100644
--- a/pkg/util/utils.go
+++ b/pkg/util/utils.go
@@ -638,3 +638,41 @@ func ValidateSysctls(strSlice []string) (map[string]string, error) {
 func DefaultContainerConfig() *config.Config {
 	return containerConfig
 }
+
+func CreateCidFile(cidfile string, id string) error {
+	cidFile, err := OpenExclusiveFile(cidfile)
+	if err != nil {
+		if os.IsExist(err) {
+			return errors.Errorf("container id file exists. Ensure another container is not using it or delete %s", cidfile)
+		}
+		return errors.Errorf("error opening cidfile %s", cidfile)
+	}
+	if _, err = cidFile.WriteString(id); err != nil {
+		logrus.Error(err)
+	}
+	cidFile.Close()
+	return nil
+}
+
+// DefaultCPUPeriod is the default CPU period is 100us, which is the same default
+// as Kubernetes.
+const DefaultCPUPeriod uint64 = 100000
+
+// CoresToPeriodAndQuota converts a fraction of cores to the equivalent
+// Completely Fair Scheduler (CFS) parameters period and quota.
+//
+// Cores is a fraction of the CFS period that a container may use. Period and
+// Quota are in microseconds.
+func CoresToPeriodAndQuota(cores float64) (uint64, int64) {
+	return DefaultCPUPeriod, int64(cores * float64(DefaultCPUPeriod))
+}
+
+// PeriodAndQuotaToCores takes the CFS parameters period and quota and returns
+// a fraction that represents the limit to the number of cores that can be
+// utilized over the scheduling period.
+//
+// Cores is a fraction of the CFS period that a container may use. Period and
+// Quota are in microseconds.
+func PeriodAndQuotaToCores(period uint64, quota int64) float64 {
+	return float64(quota) / float64(period)
+}
diff --git a/pkg/util/utils_test.go b/pkg/util/utils_test.go
index a9b37844e..cb737bd76 100644
--- a/pkg/util/utils_test.go
+++ b/pkg/util/utils_test.go
@@ -257,3 +257,23 @@ func TestValidateSysctlBadSysctl(t *testing.T) {
 	_, err := ValidateSysctls(strSlice)
 	assert.Error(t, err)
 }
+
+func TestCoresToPeriodAndQuota(t *testing.T) {
+	cores := 1.0
+	expectedPeriod := DefaultCPUPeriod
+	expectedQuota := int64(DefaultCPUPeriod)
+
+	actualPeriod, actualQuota := CoresToPeriodAndQuota(cores)
+	assert.Equal(t, actualPeriod, expectedPeriod, "Period does not match")
+	assert.Equal(t, actualQuota, expectedQuota, "Quota does not match")
+}
+
+func TestPeriodAndQuotaToCores(t *testing.T) {
+	var (
+		period        uint64 = 100000
+		quota         int64  = 50000
+		expectedCores        = 0.5
+	)
+
+	assert.Equal(t, PeriodAndQuotaToCores(period, quota), expectedCores)
+}