diff options
Diffstat (limited to 'include/linux/ipc_namespace.h')
| -rw-r--r-- | include/linux/ipc_namespace.h | 24 |
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); |