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-rw-r--r--include/linux/ipc.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/ipc.h b/include/linux/ipc.h
index 36027b10f283..d9e2b3f36c35 100644
--- a/include/linux/ipc.h
+++ b/include/linux/ipc.h
@@ -88,20 +88,38 @@ struct ipc_namespace {
};
extern struct ipc_namespace init_ipc_ns;
+
+#ifdef CONFIG_SYSVIPC
+#define INIT_IPC_NS(ns) .ns = &init_ipc_ns,
+#else
+#define INIT_IPC_NS(ns)
+#endif
+
+#ifdef CONFIG_IPC_NS
extern void free_ipc_ns(struct kref *kref);
extern int copy_ipcs(unsigned long flags, struct task_struct *tsk);
extern int unshare_ipcs(unsigned long flags, struct ipc_namespace **ns);
+#else
+static inline int copy_ipcs(unsigned long flags, struct task_struct *tsk)
+{
+ return 0;
+}
+#endif
static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns)
{
+#ifdef CONFIG_IPC_NS
if (ns)
kref_get(&ns->kref);
+#endif
return ns;
}
static inline void put_ipc_ns(struct ipc_namespace *ns)
{
+#ifdef CONFIG_IPC_NS
kref_put(&ns->kref, free_ipc_ns);
+#endif
}
#endif /* __KERNEL__ */