I'm playing with porting SQLite to VM/370 CE CMS. It may not be possible - I have to solve a few issues around truncating files and committing data to disk. Both of those are outside the normal realm for CMS application code. SQLite attempts to make porting easy, by encapsulating the OS interface into a single module - the "Virtual File System". The VFS interface maps OK onto the CMS filesystem for almost all functions, but not all. I had similar issues porting a PC/Unix embedded database to VM/SP 5 CMS about 30 years ago, so it's familiar country, but the final solution wasn't my favorite and I'm trying to do something more general this time.
The did . It uses a Unix I/O model, so I assume he intended it to be used with the CMS Byte File System, since that's been available to VMers since the last century. So his VFS implementation isn't going to work for me.
Ross
