54     size_t param_size;  member
510 typedef int (*ioctl_fn)(struct file *filp, struct dm_ioctl *param, size_t param_size);
512 static int remove_all(struct file *filp, struct dm_ioctl *param, size_t param_size)  in remove_all()  argument
536 static void *get_result_buffer(struct dm_ioctl *param, size_t param_size,  in get_result_buffer()  argument
541 	if (param->data_start < param_size)  in get_result_buffer()
542 		*len = param_size - param->data_start;  in get_result_buffer()
573 static int list_devices(struct file *filp, struct dm_ioctl *param, size_t param_size)  in list_devices()  argument
601 	nl = orig_nl = get_result_buffer(param, param_size, &len);  in list_devices()
687 static int __list_versions(struct dm_ioctl *param, size_t param_size, const char *name)  in __list_versions()  argument
712 	vers = get_result_buffer(param, param_size, &len);  in __list_versions()
719 	iter_info.param_size = param_size;  in __list_versions()
740 static int list_versions(struct file *filp, struct dm_ioctl *param, size_t param_size)  in list_versions()  argument
742 	return __list_versions(param, param_size, NULL);  in list_versions()
745 static int get_target_version(struct file *filp, struct dm_ioctl *param, size_t param_size)  in get_target_version()  argument
747 	return __list_versions(param, param_size, param->name);  in get_target_version()
854 static int dev_create(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_create()  argument
952 static int dev_remove(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_remove()  argument
1019 static int dev_rename(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_rename()  argument
1027 	    invalid_str(new_data, (void *) param + param_size) || !*new_data ||  in dev_rename()
1049 static int dev_set_geometry(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_set_geometry()  argument
1063 	    invalid_str(geostr, (void *) param + param_size)) {  in dev_set_geometry()
1202 static int dev_suspend(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_suspend()  argument
1214 static int dev_status(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_status()  argument
1232 			    struct dm_ioctl *param, size_t param_size)  in retrieve_status()  argument
1241 	outptr = outbuf = get_result_buffer(param, param_size, &len);  in retrieve_status()
1307 static int dev_wait(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_wait()  argument
1335 		retrieve_status(table, param, param_size);  in dev_wait()
1348 static int dev_arm_poll(struct file *filp, struct dm_ioctl *param, size_t param_size)  in dev_arm_poll()  argument
1380 			  struct dm_ioctl *param, size_t param_size)  in populate_table()  argument
1386 	void *end = (void *) param + param_size;  in populate_table()
1426 static int table_load(struct file *filp, struct dm_ioctl *param, size_t param_size)  in table_load()  argument
1444 	r = populate_table(t, param, param_size);  in table_load()
1513 static int table_clear(struct file *filp, struct dm_ioctl *param, size_t param_size)  in table_clear()  argument
1554 			  struct dm_ioctl *param, size_t param_size)  in retrieve_deps()  argument
1562 	deps = get_result_buffer(param, param_size, &len);  in retrieve_deps()
1590 static int table_deps(struct file *filp, struct dm_ioctl *param, size_t param_size)  in table_deps()  argument
1604 		retrieve_deps(table, param, param_size);  in table_deps()
1616 static int table_status(struct file *filp, struct dm_ioctl *param, size_t param_size)  in table_status()  argument
1630 		retrieve_status(table, param, param_size);  in table_status()
1671 static int target_message(struct file *filp, struct dm_ioctl *param, size_t param_size)  in target_message()  argument
1680 	char *result = get_result_buffer(param, param_size, &maxlen);  in target_message()
1688 	    invalid_str(tmsg->message, (void *) param + param_size)) {  in target_message()
1840 static void free_params(struct dm_ioctl *param, size_t param_size, int param_flags)  in free_params()  argument
1843 		memset(param, 0, param_size);  in free_params()