Initial commit

vendor/github.com/hyperhq/hypercli/volume/volume_propagation_linux.go

@@ -0,0 +1,44 @@
+// +build linux
+
+package volume
+
+import (
+	"strings"
+)
+
+// DefaultPropagationMode defines what propagation mode should be used by
+// default if user has not specified one explicitly.
+const DefaultPropagationMode string = "rprivate"
+
+// propagation modes
+var propagationModes = map[string]bool{
+	"private":  true,
+	"rprivate": true,
+	"slave":    true,
+	"rslave":   true,
+	"shared":   true,
+	"rshared":  true,
+}
+
+// GetPropagation extracts and returns the mount propagation mode. If there
+// are no specifications, then by default it is "private".
+func GetPropagation(mode string) string {
+	for _, o := range strings.Split(mode, ",") {
+		if propagationModes[o] {
+			return o
+		}
+	}
+	return DefaultPropagationMode
+}
+
+// HasPropagation checks if there is a valid propagation mode present in
+// passed string. Returns true if a valid propagatio mode specifier is
+// present, false otherwise.
+func HasPropagation(mode string) bool {
+	for _, o := range strings.Split(mode, ",") {
+		if propagationModes[o] {
+			return true
+		}
+	}
+	return false
+}