C++ (Cpp) KDiskDeviceManager::NextDiskSystem Examples

Example #1

File: ddm_userland_interface.cpp Project: looncraz/haiku

status_t
_user_get_next_disk_system_info(int32 *_cookie, user_disk_system_info *_info)
{
	if (_info == NULL)
		return B_BAD_VALUE;
	if (!IS_USER_ADDRESS(_info))
		return B_BAD_ADDRESS;
	int32 cookie;
	status_t result = copy_from_user_value(cookie, _cookie);
	if (result != B_OK)
		return result;
	result = B_ENTRY_NOT_FOUND;
	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
	if (ManagerLocker locker = manager) {
		KDiskSystem *diskSystem = manager->NextDiskSystem(&cookie);
		if (diskSystem != NULL) {
			user_disk_system_info info;
			diskSystem->GetInfo(&info);
			result = copy_to_user_value(_info, info);
		}
	}
	status_t error = copy_to_user_value(_cookie, cookie);
	if (error != B_OK)
		result = error;
	return result;
}

Example #2

status_t
_user_get_next_disk_system_info(int32 *_cookie, user_disk_system_info *_info)
{
	if (!_cookie || !_info)
		return B_BAD_VALUE;
	int32 cookie;
	user_memcpy(&cookie, _cookie, sizeof(cookie));
	status_t result = B_ENTRY_NOT_FOUND;
	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
	if (ManagerLocker locker = manager) {
		if (KDiskSystem *diskSystem = manager->NextDiskSystem(&cookie)) {
			user_disk_system_info info;
			diskSystem->GetInfo(&info);
			user_memcpy(_info, &info, sizeof(info));
			result = B_OK;
		}
	}
	user_memcpy(_cookie, &cookie, sizeof(cookie));
	return result;
}