113 static void do_shm_rmid(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)  in do_shm_rmid()  argument
117 	shp = container_of(ipcp, struct shmid_kernel, shm_perm);  in do_shm_rmid()
158 	struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&shm_ids(ns), id);  in shm_obtain_object()  local
160 	if (IS_ERR(ipcp))  in shm_obtain_object()
161 		return ERR_CAST(ipcp);  in shm_obtain_object()
163 	return container_of(ipcp, struct shmid_kernel, shm_perm);  in shm_obtain_object()
168 	struct kern_ipc_perm *ipcp = ipc_obtain_object_check(&shm_ids(ns), id);  in shm_obtain_object_check()  local
170 	if (IS_ERR(ipcp))  in shm_obtain_object_check()
171 		return ERR_CAST(ipcp);  in shm_obtain_object_check()
173 	return container_of(ipcp, struct shmid_kernel, shm_perm);  in shm_obtain_object_check()
182 	struct kern_ipc_perm *ipcp;  in shm_lock()  local
185 	ipcp = ipc_obtain_object_idr(&shm_ids(ns), id);  in shm_lock()
186 	if (IS_ERR(ipcp))  in shm_lock()
189 	ipc_lock_object(ipcp);  in shm_lock()
196 	if (ipc_valid_object(ipcp)) {  in shm_lock()
198 		return container_of(ipcp, struct shmid_kernel, shm_perm);  in shm_lock()
201 	ipc_unlock_object(ipcp);  in shm_lock()
202 	ipcp = ERR_PTR(-EIDRM);  in shm_lock()
209 	return ERR_CAST(ipcp);  in shm_lock()
212 static inline void shm_lock_by_ptr(struct shmid_kernel *ipcp)  in shm_lock_by_ptr()  argument
215 	ipc_lock_object(&ipcp->shm_perm);  in shm_lock_by_ptr()
355 	struct kern_ipc_perm *ipcp = p;  in shm_try_destroy_orphaned()  local
356 	struct shmid_kernel *shp = container_of(ipcp, struct shmid_kernel, shm_perm);  in shm_try_destroy_orphaned()
714 static inline int shm_more_checks(struct kern_ipc_perm *ipcp,  in shm_more_checks()  argument
719 	shp = container_of(ipcp, struct shmid_kernel, shm_perm);  in shm_more_checks()
894 	struct kern_ipc_perm *ipcp;  in shmctl_down()  local
901 	ipcp = ipcctl_obtain_check(ns, &shm_ids(ns), shmid, cmd,  in shmctl_down()
903 	if (IS_ERR(ipcp)) {  in shmctl_down()
904 		err = PTR_ERR(ipcp);  in shmctl_down()
908 	shp = container_of(ipcp, struct shmid_kernel, shm_perm);  in shmctl_down()
918 		do_shm_rmid(ns, ipcp);  in shmctl_down()
922 		err = ipc_update_perm(&shmid64->shm_perm, ipcp);  in shmctl_down()
1743 	struct kern_ipc_perm *ipcp = it;  in sysvipc_shm_proc_show()  local
1747 	shp = container_of(ipcp, struct shmid_kernel, shm_perm);  in sysvipc_shm_proc_show()