Check security and permissions for an ipc object
int ipc_check_perms(struct ipc_namespace * ns, struct kern_ipc_perm * ipcp, const struct ipc_ops * ops, struct ipc_params * params);
ns
ipc namespace
ipcp
ipc permission set
ops
the actual security routine to call
params
its parameters
This routine is called by sys_msgget, sys_semget and sys_shmget when the key is not IPC_PRIVATE and that key already exists in the ds IDR.
On success, the ipc id is returned.
It is called with ipc_ids.rwsem and ipcp->lock held.