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Diffstat (limited to 'include/linux/ipc.h')
-rw-r--r--include/linux/ipc.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/ipc.h b/include/linux/ipc.h
index b291189737e7..36027b10f283 100644
--- a/include/linux/ipc.h
+++ b/include/linux/ipc.h
@@ -2,6 +2,7 @@
#define _LINUX_IPC_H
#include <linux/types.h>
+#include <linux/kref.h>
#define IPC_PRIVATE ((__kernel_key_t) 0)
@@ -68,6 +69,41 @@ struct kern_ipc_perm
void *security;
};
+struct ipc_ids;
+struct ipc_namespace {
+ struct kref kref;
+ struct ipc_ids *ids[3];
+
+ int sem_ctls[4];
+ int used_sems;
+
+ int msg_ctlmax;
+ int msg_ctlmnb;
+ int msg_ctlmni;
+
+ size_t shm_ctlmax;
+ size_t shm_ctlall;
+ int shm_ctlmni;
+ int shm_tot;
+};
+
+extern struct ipc_namespace init_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);
+
+static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns)
+{
+ if (ns)
+ kref_get(&ns->kref);
+ return ns;
+}
+
+static inline void put_ipc_ns(struct ipc_namespace *ns)
+{
+ kref_put(&ns->kref, free_ipc_ns);
+}
+
#endif /* __KERNEL__ */
#endif /* _LINUX_IPC_H */