🚀 go-pugleaf

tchnd-au@garnet.berkeley.edu (Yuval Oren) writes:

>I would like to implement soft links for DOS. I planned to trap the
>file open, close, etc. interrupts, and re-direct them to the address
>stored in a "link file," which would have one line, the full path of
>the real file. But then I thought, how can I open this file to find
>out where to go? Any ideas for me?

Presumably your INT21 handler would remember the address that it used to
have stored, so that it could pass non-linked file calls on to DOS.
Just use the old INT21 handler to handle your link calls.

I would love to see a good symlink handler for DOS.  I saw one once that
seemed to work, but it did not support the DOS EXEC call, so I could not
use it to symlink program files to each other.  This would have been
perfect for the PBMPLUS tools.

One question:  How do you propose to be able to tell the difference
between a symlink file and a real file that happens to contain a
pathname?

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