nsproxy: remove INIT_NSPROXY()

[safe/jmp/linux-2.6] / include / linux / ipc_namespace.h

diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index a491fc9..5195298 100644 (file)
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -2,11 +2,31 @@
 #define __IPC_NAMESPACE_H__
 
 #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;
+       unsigned short seq;
+       unsigned short seq_max;
+       struct rw_semaphore rw_mutex;
+       struct idr ipcs_idr;
+};
 
-struct ipc_ids;
 struct ipc_namespace {
-       struct kref     kref;
-       struct ipc_ids  *ids[3];
+       atomic_t        count;
+       struct ipc_ids  ids[3];
 
        int             sem_ctls[4];
        int             used_sems;
@@ -16,37 +36,69 @@ struct ipc_namespace {
        int             msg_ctlmni;
        atomic_t        msg_bytes;
        atomic_t        msg_hdrs;
+       int             auto_msgmni;
 
        size_t          shm_ctlmax;
        size_t          shm_ctlall;
        int             shm_ctlmni;
        int             shm_tot;
+
+       struct notifier_block ipcns_nb;
+
+       /* The kern_mount of the mqueuefs sb.  We take a ref on it */
+       struct vfsmount *mq_mnt;
+
+       /* # queues in this ns, protected by mq_lock */
+       unsigned int    mq_queues_count;
+
+       /* next fields are set through sysctl */
+       unsigned int    mq_queues_max;   /* initialized to DFLT_QUEUESMAX */
+       unsigned int    mq_msg_max;      /* initialized to DFLT_MSGMAX */
+       unsigned int    mq_msgsize_max;  /* initialized to DFLT_MSGSIZEMAX */
+
 };
 
 extern struct ipc_namespace init_ipc_ns;
+extern atomic_t nr_ipc_ns;
+
+extern spinlock_t mq_lock;
 
 #ifdef CONFIG_SYSVIPC
-#define INIT_IPC_NS(ns)                .ns             = &init_ipc_ns,
+extern int register_ipcns_notifier(struct ipc_namespace *);
+extern int cond_register_ipcns_notifier(struct ipc_namespace *);
+extern void unregister_ipcns_notifier(struct ipc_namespace *);
+extern int ipcns_notify(unsigned long);
+#else /* CONFIG_SYSVIPC */
+static inline int register_ipcns_notifier(struct ipc_namespace *ns)
+{ return 0; }
+static inline int cond_register_ipcns_notifier(struct ipc_namespace *ns)
+{ return 0; }
+static inline void unregister_ipcns_notifier(struct ipc_namespace *ns) { }
+static inline int ipcns_notify(unsigned long l) { return 0; }
+#endif /* CONFIG_SYSVIPC */
+
+#ifdef CONFIG_POSIX_MQUEUE
+extern int mq_init_ns(struct ipc_namespace *ns);
+/* default values */
+#define DFLT_QUEUESMAX 256     /* max number of message queues */
+#define DFLT_MSGMAX    10      /* max number of messages in each queue */
+#define HARD_MSGMAX    (32768*sizeof(void *)/4)
+#define DFLT_MSGSIZEMAX 8192   /* max message size */
 #else
-#define INIT_IPC_NS(ns)
+static inline int mq_init_ns(struct ipc_namespace *ns) { return 0; }
 #endif
 
-#if defined(CONFIG_SYSVIPC) && defined(CONFIG_IPC_NS)
-extern void free_ipc_ns(struct kref *kref);
+#if defined(CONFIG_IPC_NS)
 extern struct ipc_namespace *copy_ipcs(unsigned long flags,
-                                               struct ipc_namespace *ns);
-
+                                      struct ipc_namespace *ns);
 static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns)
 {
        if (ns)
-               kref_get(&ns->kref);
+               atomic_inc(&ns->count);
        return ns;
 }
 
-static inline void put_ipc_ns(struct ipc_namespace *ns)
-{
-       kref_put(&ns->kref, free_ipc_ns);
-}
+extern void put_ipc_ns(struct ipc_namespace *ns);
 #else
 static inline struct ipc_namespace *copy_ipcs(unsigned long flags,
                struct ipc_namespace *ns)
@@ -66,4 +118,18 @@ static inline void put_ipc_ns(struct ipc_namespace *ns)
 {
 }
 #endif
+
+#ifdef CONFIG_POSIX_MQUEUE_SYSCTL
+
+struct ctl_table_header;
+extern struct ctl_table_header *mq_register_sysctl_table(void);
+
+#else /* CONFIG_POSIX_MQUEUE_SYSCTL */
+
+static inline struct ctl_table_header *mq_register_sysctl_table(void)
+{
+       return NULL;
+}
+
+#endif /* CONFIG_POSIX_MQUEUE_SYSCTL */
 #endif