[Dovecot] dovecot-shared file

[Timo Sirainen]

On Fri, 2009-01-30 at 16:49 +0100, Thomas Hummel wrote:
> Hello Timo,
> 
> About the dovecot-shared file, the wiki says :
> 
>   "Unless you're using a single UID for all the users, you'll need to have a
>    dovecot-shared file in each shared maildir. The group and the file permissions
>    for new files inside the maildir are taken from the dovecot-shared file." 
> 
> but says the following too :
> 
>   "With Maildir dovecot-shared file controls if the \Seen flags are shared or
>    private. If you don't have the file, they're shared."
> 
> The question is "does it make sense (or is it even possible) not to have the
> file ?". Why would one not have the file and how would it work then ? By
> relying on the set-gid bit and umask ?

Maybe. Or maybe it just wouldn't work. I haven't thought about it.

> So, my undersanding is that :
> 
>   1) you have the file
>     1.a) if INDEX points to the same place, flags are shared but are lost if indexes are lost
>     1.b) if INDEX points to some user dependant place, flags are private but
>          are lost if indexes are lost
> 
>   2) you don't have the file
>      flags are shared, whatever INDEX points to and, since they're stored in filename, survive indexes lost.

Right.
    
>      but does shared-mailboxes even work if we don't have that file ? maybe only
>      if the set-gid bit and umask does what the file would have done ?

Yes, maybe.

> So maybe, if you want to share flags, 2) is safer dans if you want them
> private, 1.b) is the only choice ?

Yes.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: This is a digitally signed message part
Url : http://dovecot.org/pipermail/dovecot/attachments/20090206/38bb7983/attachment.bin