173 	struct kern_ipc_perm *ipcp;  in ipc_findkey()  local
175 	ipcp = rhashtable_lookup_fast(&ids->key_ht, &key,  in ipc_findkey()
177 	if (!ipcp)  in ipc_findkey()
181 	ipc_lock_object(ipcp);  in ipc_findkey()
182 	return ipcp;  in ipc_findkey()
365 			   struct kern_ipc_perm *ipcp,  in ipc_check_perms()  argument
371 	if (ipcperms(ns, ipcp, params->flg))  in ipc_check_perms()
374 		err = ops->associate(ipcp, params->flg);  in ipc_check_perms()
376 			err = ipcp->id;  in ipc_check_perms()
399 	struct kern_ipc_perm *ipcp;  in ipcget_public()  local
408 	ipcp = ipc_findkey(ids, params->key);  in ipcget_public()
409 	if (ipcp == NULL) {  in ipcget_public()
423 				err = ops->more_checks(ipcp, params);  in ipcget_public()
429 				err = ipc_check_perms(ns, ipcp, ops, params);  in ipcget_public()
431 		ipc_unlock(ipcp);  in ipcget_public()
446 static void ipc_kht_remove(struct ipc_ids *ids, struct kern_ipc_perm *ipcp)  in ipc_kht_remove()  argument
448 	if (ipcp->key != IPC_PRIVATE)  in ipc_kht_remove()
449 		WARN_ON_ONCE(rhashtable_remove_fast(&ids->key_ht, &ipcp->khtnode,  in ipc_kht_remove()
461 void ipc_rmid(struct ipc_ids *ids, struct kern_ipc_perm *ipcp)  in ipc_rmid()  argument
463 	int idx = ipcid_to_idx(ipcp->id);  in ipc_rmid()
465 	WARN_ON_ONCE(idr_remove(&ids->ipcs_idr, idx) != ipcp);  in ipc_rmid()
466 	ipc_kht_remove(ids, ipcp);  in ipc_rmid()
468 	ipcp->deleted = true;  in ipc_rmid()
488 void ipc_set_key_private(struct ipc_ids *ids, struct kern_ipc_perm *ipcp)  in ipc_set_key_private()  argument
490 	ipc_kht_remove(ids, ipcp);  in ipc_set_key_private()
491 	ipcp->key = IPC_PRIVATE;  in ipc_set_key_private()
519 int ipcperms(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, short flag)  in ipcperms()  argument
524 	audit_ipc_obj(ipcp);  in ipcperms()
526 	granted_mode = ipcp->mode;  in ipcperms()
527 	if (uid_eq(euid, ipcp->cuid) ||  in ipcperms()
528 	    uid_eq(euid, ipcp->uid))  in ipcperms()
530 	else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid))  in ipcperms()
537 	return security_ipc_permission(ipcp, flag);  in ipcperms()
694 	struct kern_ipc_perm *ipcp;  in ipcctl_obtain_check()  local
696 	ipcp = ipc_obtain_object_check(ids, id);  in ipcctl_obtain_check()
697 	if (IS_ERR(ipcp)) {  in ipcctl_obtain_check()
698 		err = PTR_ERR(ipcp);  in ipcctl_obtain_check()
702 	audit_ipc_obj(ipcp);  in ipcctl_obtain_check()
708 	if (uid_eq(euid, ipcp->cuid) || uid_eq(euid, ipcp->uid)  ||  in ipcctl_obtain_check()
710 		return ipcp; /* successful lookup */  in ipcctl_obtain_check()