[Info-vax] CRTL and RMS vs SSIO

[Lawrence D’Oliveiro]

On Friday, October 15, 2021 at 2:36:27 PM UTC+13, Arne Vajhøj wrote:
> On 10/14/2021 9:11 PM, Lawrence D’Oliveiro wrote: 
>
>> And VMS can do the same thing. All the compatibility stuff can live in userland.
>
> I am having a hard time seeing: VMS scheduling, VMS memory protection, 
> VMS clustering, ...

None of which are relevant, because Linux already offers better functionality in all those areas.

> DECnet, LAT ...

They can be implemented in userland. If Netatalk can implement AppleTalk entirely in userland, why not them?

> ... device handling ...

Unneeded, since Linux already has the needed device drivers.

> ... ODS-2 & ODS-5 ...

New filesystems don’t have to be implemented as kernel modules, they could be done via FUSE.

> 4 mode logicals etc ...

Name services can be provided via a daemon communicating via, e.g. D-Bus. PF_UNIX sockets allow you to control access based on the credentials of the process you are talking to.

And as a bonus, that daemon can provide something which VMS itself cannot: persistent backup for the logical name database.

Nobody mentioned PPFs? We can handle those, too.