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HostFS doesn't seem to have any difficulties opening the same file more than once, even if one or more of them are with write-access. So if I do:

a%=OPENOUT"HostFS::HardDisc4.$.File"
b%=OPENOUT"HostFS::HardDisc4.$.File"

I get two different, valid handes, instead of a 'This file is already open' on the second file. This leads to problems when fetching mail: The debatching begins while the mail is being downloaded. There are probably more situations that this creates trouble.

Can something be done about that?...

Cheers,
Jan-Jaap

Ah that explains something - I've noticed the same problem using !PopStar, just didn't know why.

KJ

Ok, it's not entirely clear from the PRM's if there is a standard way.

ADFS seems to allow either multiple readonly opens _or_ a single readwrite open.

The other option is to allow multiple readonly opens _and_ a single readwrite open, which seems a bit more flexible.

Currently, as you say, hostfs allows multiple readwrite opens which is probably wrong and certainly causing problems.

The second option looks best to me but I'm open to suggestions,
Graeme

From a technical view, your second option indeed looks best, but from a practical standpoint I fear it isn't. If it would be implemented that way, debatching (read-only reading of the fetched mail) would still be possible while the mail is being downloaded (write access to that same file).

So I would prefer the first option, an emulation of ADFS (FileCore?) functionality...

Jan-Jaap

Ok, I've changed the file open semantics to match those of FileCore, you can now have multiple opens for reading but opening for write needs exclusive access.

This will be included in a future update.

Graeme

Great! Thanks!

Jan-Jaap