setuid rsync

[Daniel S. Cohen]

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Hello,

I trying to create an automated backup from one machine to the other via
SSH.  I have setup ssh keys and so on, so everything is pretty much
working.  The only thing is, I am trying to perserve file ownership.  I
don't want to use ssh keys w/o a password (for obvious reasons), so I
what I did was this:

I setup a chrooted account called backup (using JAIL), and installed
rsync in the chrooted directory as setuid.  I changed some permissions
at the directory level so only backup has access to this directory (so
non-chrooted users can't access /backup/usr/local/, etc...).  Now, when
I run rsync from the remote server, it logins and creates all the files
with ownership "root" instead of "backup."

I am using rsync 2.6.0 with the following options:

rsync -a -v -e "ssh -l backup" --ignore-errors --delete --numeric-ids
- --link-dest=/backup/yesterday/ <source> <server>:/backup/machine/today/

Anyone have any ideas why the setuid rsync is not perserving ownership?
Any help or suggestions would be greatly appreciated.

Thanks,


Dan


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