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Diffstat (limited to 'include/linux/ipc_namespace.h')
-rw-r--r--include/linux/ipc_namespace.h24
1 files changed, 22 insertions, 2 deletions
diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index e4451d1da75..ea6c18a8b0d 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -4,6 +4,17 @@
#include <linux/err.h>
#include <linux/idr.h>
#include <linux/rwsem.h>
+#include <linux/notifier.h>
+
+/*
+ * ipc namespace events
+ */
+#define IPCNS_MEMCHANGED 0x00000001 /* Notify lowmem size changed */
+#define IPCNS_CREATED 0x00000002 /* Notify new ipc namespace created */
+#define IPCNS_REMOVED 0x00000003 /* Notify ipc namespace removed */
+
+#define IPCNS_CALLBACK_PRI 0
+
struct ipc_ids {
int in_use;
@@ -30,15 +41,24 @@ struct ipc_namespace {
size_t shm_ctlall;
int shm_ctlmni;
int shm_tot;
+
+ struct notifier_block ipcns_nb;
};
extern struct ipc_namespace init_ipc_ns;
+extern atomic_t nr_ipc_ns;
#ifdef CONFIG_SYSVIPC
#define INIT_IPC_NS(ns) .ns = &init_ipc_ns,
-#else
+
+extern int register_ipcns_notifier(struct ipc_namespace *);
+extern int cond_register_ipcns_notifier(struct ipc_namespace *);
+extern int unregister_ipcns_notifier(struct ipc_namespace *);
+extern int ipcns_notify(unsigned long);
+
+#else /* CONFIG_SYSVIPC */
#define INIT_IPC_NS(ns)
-#endif
+#endif /* CONFIG_SYSVIPC */
#if defined(CONFIG_SYSVIPC) && defined(CONFIG_IPC_NS)
extern void free_ipc_ns(struct kref *kref);