diff options
Diffstat (limited to 'ipc/util.h')
| -rw-r--r-- | ipc/util.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/ipc/util.h b/ipc/util.h index 76f8a79902d..99414a36a25 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -54,7 +54,7 @@ struct ipc_params { * the calls to sys_msgget(), sys_semget(), sys_shmget() * . routine to call to create a new ipc object. Can be one of newque, * newary, newseg - * . routine to call to call to check permissions for a new ipc object. + * . routine to call to check permissions for a new ipc object. * Can be one of security_msg_associate, security_sem_associate, * security_shm_associate * . routine to call for an extra check if needed @@ -88,7 +88,8 @@ int ipc_get_maxid(struct ipc_ids *); /* must be called with both locks acquired. */ void ipc_rmid(struct ipc_ids *, struct kern_ipc_perm *); -int ipcperms (struct kern_ipc_perm *ipcp, short flg); +/* must be called with ipcp locked */ +int ipcperms(struct kern_ipc_perm *ipcp, short flg); /* for rare, potentially huge allocations. * both function can sleep @@ -131,6 +132,9 @@ static inline int ipc_buildid(struct ipc_ids *ids, int id, int seq) return SEQ_MULTIPLIER * seq + id; } +/* + * Must be called with ipcp locked + */ static inline int ipc_checkid(struct ipc_ids *ids, struct kern_ipc_perm *ipcp, int uid) { @@ -168,6 +172,16 @@ static inline struct kern_ipc_perm *ipc_lock_check(struct ipc_ids *ids, return out; } +/** + * ipcget - Common sys_*get() code + * @ns : namsepace + * @ids : IPC identifier set + * @ops : operations to be called on ipc object creation, permission checks + * and further checks + * @params : the parameters needed by the previous operations. + * + * Common routine called by sys_msgget(), sys_semget() and sys_shmget(). + */ static inline int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, struct ipc_ops *ops, struct ipc_params *params) { |