Account can only be used to login one at a time
davec-b at rogers.com
Thu Oct 7 14:34:21 GMT 2004
Andrew Bartlett wrote:
> This works, for cases where there is a persistent CIFS connection to the
> server. However (and this is why I talk about partial solutions) there
> is no CIFS connection that must be maintained for the user to remain
> logged in. It could be that at particular sites, the home drive is on
> the PDC (and always mapped), and that is a good 'indicator'.
But they're mostly heuristics, not clear indications.
To do a user sign-on limit at the server, the smbds
for the same user would need to be "queried" to see
if the user was still alive,and the sign-on rejected
if there was an active (not dead, not broken and not
timed-out) user on another smbd.
There is already a mapping from username to smbd, so
a query could be a signal or signal-like message to
the smbds for that user to send an are-you-there
to the client. A disconnected, dead or time-out
client would resulting a SIGPIPE, that smbd would close
down and the mapping would be gone.
However, because PCs can and will time out, there could
be a timed-out connection that the PC thinks is alive,
and which it might try to reestablish. The algorithm
I describe would only have the choice to allow two
connections, or deny the reconnect!
This might be A Bad Thing (;-))
David Collier-Brown, | Always do right. This will gratify
Software Engineer and Author | some people and astonish the rest
davecb at spamcop.net | -- Mark Twain
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