diff -u lockdev-1.0.1/src/lockdev.c lockdev-1.0.1/src/lockdev.c
--- lockdev-1.0.1/src/lockdev.c
+++ lockdev-1.0.1/src/lockdev.c
@@ -126,6 +126,9 @@
 #if defined (__linux__)
 #include <linux/kdev_t.h>
 #include <linux/major.h>
+#elif defined (__FreeBSD_kernel__) || defined(__NetBSD_kernel__) || defined(__OpenBSD_kernel__)
+#  define MAJOR(dev) ((dev & 0xff00) >> 8)
+#  define MINOR(dev) (dev & 0xffff00ff)
 #else
 #  error "put here a define for MAJOR and MINOR"
 #endif
@@ -188,7 +191,7 @@
  * All types uses the macro LOCK_PATH
  */
 
-#if defined (__linux__)
+#if defined (__linux__) || defined (__FreeBSD_kernel__) || defined(__NetBSD_kernel__) || defined(__OpenBSD_kernel__)
 
 /* for internal use */
 static inline int