diff --git a/ipc/util.h b/ipc/util.h
index 0181553d..c8fd6b9d 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -3,6 +3,8 @@
  * Copyright (C) 1999 Christoph Rohland
  *
  * ipc helper functions (c) 1999 Manfred Spraul <manfred@colorfullife.com>
+ * namespaces support.      2006 OpenVZ, SWsoft Inc.
+ *                               Pavel Emelianov <xemul@openvz.org>
  */
 
 #ifndef _IPC_UTIL_H
@@ -15,6 +17,14 @@
 void msg_init (void);
 void shm_init (void);
 
+int sem_init_ns(struct ipc_namespace *ns);
+int msg_init_ns(struct ipc_namespace *ns);
+int shm_init_ns(struct ipc_namespace *ns);
+
+void sem_exit_ns(struct ipc_namespace *ns);
+void msg_exit_ns(struct ipc_namespace *ns);
+void shm_exit_ns(struct ipc_namespace *ns);
+
 struct ipc_id_ary {
 	int size;
 	struct kern_ipc_perm *p[0];
@@ -31,15 +41,23 @@
 };
 
 struct seq_file;
-void __init ipc_init_ids(struct ipc_ids* ids, int size);
+#ifdef CONFIG_IPC_NS
+#define __ipc_init
+#else
+#define __ipc_init	__init
+#endif
+void __ipc_init ipc_init_ids(struct ipc_ids *ids, int size);
 #ifdef CONFIG_PROC_FS
 void __init ipc_init_proc_interface(const char *path, const char *header,
-				    struct ipc_ids *ids,
-				    int (*show)(struct seq_file *, void *));
+		int ids, int (*show)(struct seq_file *, void *));
 #else
 #define ipc_init_proc_interface(path, header, ids, show) do {} while (0)
 #endif
 
+#define IPC_SEM_IDS	0
+#define IPC_MSG_IDS	1
+#define IPC_SHM_IDS	2
+
 /* must be called with ids->mutex acquired.*/
 int ipc_findkey(struct ipc_ids* ids, key_t key);
 int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size);