Index: lib/libvmmapi/vmmapi.h
===================================================================
--- lib/libvmmapi/vmmapi.h
+++ lib/libvmmapi/vmmapi.h
@@ -33,6 +33,8 @@
 
 #include <sys/param.h>
 #include <sys/cpuset.h>
+#include <sys/cdefs.h>
+#include <machine/vmm.h>
 #include <machine/vmm_dev.h>
 
 #include <stdbool.h>
@@ -76,6 +78,8 @@
 	VM_PCIROM,
 };
 
+__BEGIN_DECLS
+
 /*
  * Get the length and name of the memory segment identified by 'segid'.
  * Note that system memory segments are identified with a nul name.
@@ -117,6 +121,7 @@
 int	vm_create(const char *name);
 int	vm_get_device_fd(struct vmctx *ctx);
 struct vmctx *vm_open(const char *name);
+void	vm_close(struct vmctx *ctx);
 void	vm_destroy(struct vmctx *ctx);
 int	vm_parse_memsize(const char *optarg, size_t *memsize);
 int	vm_setup_memory(struct vmctx *ctx, size_t len, enum vm_mmap_style s);
@@ -263,4 +268,6 @@
 int	vm_snapshot_req(struct vm_snapshot_meta *meta);
 int	vm_restore_time(struct vmctx *ctx);
 
+__END_DECLS
+
 #endif	/* _VMMAPI_H_ */
Index: lib/libvmmapi/vmmapi.c
===================================================================
--- lib/libvmmapi/vmmapi.c
+++ lib/libvmmapi/vmmapi.c
@@ -140,6 +140,15 @@
 	return (NULL);
 }
 
+void
+vm_close(struct vmctx *vm)
+{
+	assert(vm != NULL);
+
+	close(vm->fd);
+	free(vm);
+}
+
 void
 vm_destroy(struct vmctx *vm)
 {