samba - Jul 2025 - Dynamic share configuration at connection time?

Ulrich Sibiller via samba schrieb am 07.07.2025 17:30:
> Hello,
> 
> tl/dr: Is it possible to have a script that this run when a client
> connects to a share which determines and sets the config of that share on
> the fly?
...
> I would like to spare the manual maintenance of the config file and
> instead have a script that runs when a client connects to
> <server>/<filesystem>. This script should determine the correct
> configuration and apply it on the fly for that share (or connection) only.
> (Note that the determination cannot be done by the DFS generation script
> as it has limited access to the required information.)
Unfortunately no-one has reacted so far.

I am thinking about writing an own VFS module for this but I am unsure if that
is possible at all via a VFS module. Does anybody know?

Thanks,

Ulrich Sibiller

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On 7/15/25 1:10 PM, Ulrich Sibiller via samba wrote:
> Unfortunately no-one has reacted so far.
at least to me this just required too much mind bending for which I 
didn't have the time on a volunteer basis.
> I am thinking about writing an own VFS module for this but I am
> unsure if that is possible at all via a VFS module. Does anybody
> know?
Without really understanding what you're aiming at, but have you 
considered "root preexec"? The script receives a bunch of useful 
information:

         if (*lp_root_preexec(talloc_tos(), lp_sub, snum)) {
                 char *cmd = talloc_sub_full(talloc_tos(),
                                         lp_const_servicename(SNUM(conn)),
  
conn->session_info->unix_info->unix_name,
                                         conn->connectpath,
  
conn->session_info->unix_token->gid,
  
conn->session_info->unix_info->sanitized_username,
  
conn->session_info->info->domain_name,
                                         lp_root_preexec(talloc_tos(), 
lp_sub, snum));

-slow

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