Re: SMB browser

[Gilad Ben-Yossef <gilad@benyossef.com>]

On Sat, 2002-08-31 at 13:30, Jean-Eric Cuendet wrote:
> Hi,
> I want to develop a filesystem driver. It will be able to access SMB 
> shares without mountnig.
> I'll do a daemon that use libsmbclient from Samba 3.0 that do all the 
> dirty stuff (getting the available domains, authenticating, getting 
> files, etc...) and a device driver that will be a filesystem driver. The 
> driver should communicate with the daemon to ask him about shares, 
> machines, domains, etc...

People who reinvent the wheel usually end up making it square. 


> 
> The idea is:
> - the daemon should be started by "/etc/init.d/browser start" at beginning
> - The daemon loads the driver into the kernel
> - The daemon then mounts the filesystem on /smb using the filesystem 
> provided by the driver
> - The driver waits for file requests on /smb to serve them
> The hierarchy will be :
> 
> /smb --|-- WG1  --|-- Machine1 --|-- Share1
>        |          |              |-- Share2
>        |          |-- Machine2 --|-- Share1
>        |                         |-- Share2
>        |                         |-- Share3
>              |
>        |-- WG2  --|-- Machine3 --|-- Share1
>        |-- DOM1 --|-- Machine4 --|-- etc...
>        |-- DOM2 --|-- Machine5
> 
> Then the user access /smb/WG2/Machine38/Share12/Dir1/File2
> Cool, no?
> 
> The authentication is done externally from the kernel, by a userland 
> process or PAM (a kerberos ticket is gotten from the Domain controller 
> or Samba PDC). Then the daemon uses that info to authenticate in the 
> domain. If no auth info is available, then it's authenticated as Guest.
> 
> My question:
> what is the best/easy way to make a kernel driver communicate with 
> userland? Is it via UNIX socket? Or ioctl? Shared memory? Else?
> 
> Thanks for any idea.
> -jec
> 
> 
> 
> -
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-- 
Gilad Ben-Yossef <gilad@benyossef.com>
http://benyossef.com

"Money talks, bullshit walks and GNU awks."
  -- Shachar "Sun" Shemesh, debt collector for the GNU/Yakuza