[Jailkit-users] How to allow a user from outside of jail to access a folder inside the jail?

[Steven Mapes]

I've setup a jail with restricted access which is working fine.  My 
users can connect and SCP their data onto the server, however I've now 
hit upon a requirement that I'm stuck with and was hoping for some 
advise / tips.

My jail is /jailroot
I have a folder /jailroot/home/user1/upload which is symlinked to 
/tmp/jailshare/pickup

I can access this find as root, but the problem is I need to have a cron 
running as the webservice that handles the files uploaded by the user.

when I created the jailuser I create a new group that contained that 
user and my web service account, and set this as the group for the 
user.  In the non-jail system this works fine, but in the jail system 
because the webservice user does not exist as a entry in 
/jailroot/etc/passwd it seems to not like it.

I looked at jk_uchroot as I thought that it may be the answer, but that 
also does not seem to work  
(http://olivier.sessink.nl/jailkit/jk_uchroot.8.html)

Has anyone got any thoughts on how I should be setting this up?  I'm 
sure it must be possible to allow a normal user other than root to have 
access to a folder inside of the jail.

Thanks

Steve