811 static int shmctl_down(struct ipc_namespace *ns, int shmid, int cmd,  in shmctl_down()  argument
827 	ipcp = ipcctl_pre_down_nolock(ns, &shm_ids(ns), shmid, cmd,  in shmctl_down()
867 static int shmctl_nolock(struct ipc_namespace *ns, int shmid,  in shmctl_nolock()  argument
931 			shp = shm_obtain_object(ns, shmid);  in shmctl_nolock()
938 			shp = shm_obtain_object_check(ns, shmid);  in shmctl_nolock()
981 SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf)  in SYSCALL_DEFINE3()  argument
987 	if (cmd < 0 || shmid < 0)  in SYSCALL_DEFINE3()
998 		return shmctl_nolock(ns, shmid, cmd, version, buf);  in SYSCALL_DEFINE3()
1001 		return shmctl_down(ns, shmid, cmd, buf, version);  in SYSCALL_DEFINE3()
1008 		shp = shm_obtain_object_check(ns, shmid);  in SYSCALL_DEFINE3()
1086 long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,  in do_shmat()  argument
1104 	if (shmid < 0)  in do_shmat()
1144 	shp = shm_obtain_object_check(ns, shmid);  in do_shmat()
1228 	shp = shm_lock(ns, shmid);  in do_shmat()
1243 SYSCALL_DEFINE3(shmat, int, shmid, char __user *, shmaddr, int, shmflg)  in SYSCALL_DEFINE3()  argument
1248 	err = do_shmat(shmid, shmaddr, shmflg, &ret, SHMLBA);  in SYSCALL_DEFINE3()