diff options
Diffstat (limited to 'include/linux/ipc.h')
| -rw-r--r-- | include/linux/ipc.h | 36 |
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 */ |