[Info-vax] VMS porting/rewrite, was: Re: [OT] Wirth style languages, was: Re: Obscure Ada compiler vendors?

[Johnny Billquist]

On 2013-04-10 14:07, Simon Clubley wrote:
> On 2013-04-10, Paul Sture <nospam at sture.ch> wrote:
>>
>> I got the impression in the V2 era that it should be possible to plug
>> your own file system into VMS, and the hooks were there for your own CLI
>> (the /CLI= qualifier for the username prompt during login and
>> AUTHORIZE.EXE).  IIRC a recent discussion here pointed out that the
>> latter wasn't publicly documented.
>>
>
> Are you thinking about a user written ACP instead of a new filesystem ?

Ignoring more recent things like XQP, the ACP is the thing that 
implements the file system, unless VMS is very different than RSX...
I could easily add a new file system in RSX to a running system, but 
there are caveats. RSX itself expects certain things of files, and some 
of them might be hard to work around with a file system that have rather 
different semantics.
Many of these issues surround FCS and/or RMS, which place an additional 
layer of functionality on top of the file system.

	Johnny