Real path of /Users and other files in /System/Volumes/Data on APFS

Hello,
Is in macOS exist system call which can resolve real path to file/directory for APFS?

For example, in BigSur real path of /Users directory is /System/Volumes/Data/Users. So, I expect something like this:

Code Block c++
std::string userFriendlyPath = "/Users/myuser1"
const char* pRealPath = realpath(userFriendlyPath.c_str());
if (pRealPath == nullptr)
    _log.info("real path is the same");
// but in this case pRealPath should be == "/System/Volumes/Data/Users/myuser1"

Thanks!