diff --git a/system/syscall_unix.go b/system/syscall_unix.go
new file mode 100644
index 0000000..e1b90b3
--- /dev/null
+++ b/system/syscall_unix.go
@@ -0,0 +1,11 @@
+// +build linux freebsd
+
+package system
+
+import "syscall"
+
+// UnmountWithSyscall is a platform-specific helper function to call
+// the unmount syscall.
+func UnmountWithSyscall(dest string) {
+	syscall.Unmount(dest, 0)
+}
diff --git a/system/syscall_windows.go b/system/syscall_windows.go
new file mode 100644
index 0000000..26bd80b
--- /dev/null
+++ b/system/syscall_windows.go
@@ -0,0 +1,6 @@
+package system
+
+// UnmountWithSyscall is a platform-specific helper function to call
+// the unmount syscall. Not supported on Windows
+func UnmountWithSyscall(dest string) {
+}