CWebDavSymlinkHelper::getLinkData

static function getLinkData($entityType, $entityId, $sectionData)
{
	$chain = self::getNavChain($sectionData['IBLOCK_ID'], $sectionData['ID']);
	$sectionIds = array();
	foreach ($chain as $item)
	{
		$sectionIds[] = $item['ID'];
	}
	unset($item);

	//hack. Now we have symlink only in user library. And then entityType ~equals to user
	if($entityType == self::ENTITY_TYPE_USER)
	{
		$userLib = CWebDavIblock::LibOptions('user_files', false, SITE_ID);
		if ($userLib && isset($userLib['id']) && ($iblockId = intval($userLib['id'])))
		{
			$rootSection = self::getRootSectionData($entityType, $entityId);
			if(empty($rootSection))
			{
				$rootSection = CWebDavIblock::getRootSectionDataForUser($entityId);
				if(empty($rootSection))
				{
					return array();
				}

				$margins = CIBlockSection::GetList(array(), array(
					'ID' => $rootSection['SECTION_ID'],
					'IBLOCK_ID' => $rootSection['IBLOCK_ID'],
					'CHECK_PERMISSIONS' => 'N',
				), false, array('LEFT_MARGIN', 'RIGHT_MARGIN', 'IBLOCK_ID'));
				if(!$margins)
				{
					return array();
				}
				$rootSection = $margins->fetch();

				self::addRootSectionData($entityType, $entityId, $rootSection);
			}

			$symlinkSection = CIBlockSection::getList(
				array(),
				array(
					'IBLOCK_ID' => $iblockId,
					CWebDavIblock::UF_LINK_SECTION_ID => $sectionIds,
					'CHECK_PERMISSIONS' => 'N',
					'>LEFT_BORDER' => $rootSection['LEFT_MARGIN'],
					' $rootSection['RIGHT_MARGIN'],
				),
				false,
				CWebDavIblock::getUFNamesForSectionLink()
			);
			if(!$symlinkSection || !($symlinkSection = $symlinkSection->fetch()))
			{
				return array();
			}
			return $symlinkSection;
		}
	}
	elseif($entityType == self::ENTITY_TYPE_GROUP)
	{
		return array();
	}
	elseif($entityType == self::ENTITY_TYPE_SECTION) //or any another context
	{
		return array();
	}
	elseif($entityType == self::ENTITY_TYPE_SHARED)
	{
		return array();
	}
}