Index: uspace/lib/c/include/ipc/vol.h
===================================================================
--- uspace/lib/c/include/ipc/vol.h	(revision edebb4a154d7503a1a506cd53ce84ae086f387d6)
+++ uspace/lib/c/include/ipc/vol.h	(revision 44fe800cf1bcb06ed02fb05841aef4d399d77de4)
@@ -40,5 +40,6 @@
 	VOL_PART_ADD,
 	VOL_PART_INFO,
-	VOL_PART_EMPTY
+	VOL_PART_EMPTY,
+	VOL_PART_MKFS
 } vol_request_t;
 
Index: uspace/lib/c/include/types/vol.h
===================================================================
--- uspace/lib/c/include/types/vol.h	(revision edebb4a154d7503a1a506cd53ce84ae086f387d6)
+++ uspace/lib/c/include/types/vol.h	(revision 44fe800cf1bcb06ed02fb05841aef4d399d77de4)
@@ -35,4 +35,6 @@
 #ifndef LIBC_TYPES_VOL_H_
 #define LIBC_TYPES_VOL_H_
+
+#include <async.h>
 
 typedef enum {
Index: uspace/lib/c/include/vol.h
===================================================================
--- uspace/lib/c/include/vol.h	(revision edebb4a154d7503a1a506cd53ce84ae086f387d6)
+++ uspace/lib/c/include/vol.h	(revision 44fe800cf1bcb06ed02fb05841aef4d399d77de4)
@@ -48,4 +48,5 @@
 extern int vol_part_info(vol_t *, service_id_t, vol_part_info_t *);
 extern int vol_part_empty(vol_t *, service_id_t);
+extern int vol_part_mkfs(vol_t *, service_id_t, vol_fstype_t);
 
 #endif