906 static int shmctl_down(struct ipc_namespace *ns, int shmid, int cmd,  in shmctl_down()  argument
914 	if (cmd == IPC_SET) {  in shmctl_down()
922 	ipcp = ipcctl_pre_down_nolock(ns, &shm_ids(ns), shmid, cmd,  in shmctl_down()
931 	err = security_shm_shmctl(shp, cmd);  in shmctl_down()
935 	switch (cmd) {  in shmctl_down()
963 			 int cmd, int version, void __user *buf)  in shmctl_nolock()  argument
969 	if (cmd == IPC_INFO || cmd == SHM_INFO) {  in shmctl_nolock()
970 		err = security_shm_shmctl(NULL, cmd);  in shmctl_nolock()
975 	switch (cmd) {  in shmctl_nolock()
1025 		if (cmd == SHM_STAT) {  in shmctl_nolock()
1045 		err = security_shm_shmctl(shp, cmd);  in shmctl_nolock()
1076 SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf)  in SYSCALL_DEFINE3()  argument
1082 	if (cmd < 0 || shmid < 0)  in SYSCALL_DEFINE3()
1085 	version = ipc_parse_version(&cmd);  in SYSCALL_DEFINE3()
1088 	switch (cmd) {  in SYSCALL_DEFINE3()
1093 		return shmctl_nolock(ns, shmid, cmd, version, buf);  in SYSCALL_DEFINE3()
1096 		return shmctl_down(ns, shmid, cmd, buf, version);  in SYSCALL_DEFINE3()
1110 		err = security_shm_shmctl(shp, cmd);  in SYSCALL_DEFINE3()
1129 			if (cmd == SHM_LOCK && !rlimit(RLIMIT_MEMLOCK)) {  in SYSCALL_DEFINE3()
1139 		if (cmd == SHM_LOCK) {  in SYSCALL_DEFINE3()