Is it possible to recreate a file from an opened file descriptor?

Question

Now, this question may seem weird, and it probably is, but to give some context, I\'ve been reading this to learn about i-nodes in which the author gives an interesting example:

Answer 1

I'm afraid it is not possible because the link system call demands a valid file name (which means, an existing link) rather than an UNIX file descriptor. There is no flink function in the Single UNIX Specification.