Re: Fixes to mkchroot.sh for Ubuntu 12.04.2 LTS precise 64-bit

[Russ A. <rr...@st...>]

Gary Barnes <rss...@ad...> writes:

> I installed rssh from packages, and used the mkchroot.sh script to create a
> chroot jail for a user. The script threw up errors, and when I tried to
> connect, I got the "Connection closed" message.

> The FAQ says:

> "However it seems that on recent Linux distros, the script is missing
> something important, and I haven't yet figured out what that is... If you
> are able to identify it, please post to the mailing list to let me (and
> everyone else) know."

> So, to get it to work, I altered the lines that referred to libnss file to
> change /lib/ to /lib/x86_64-linux-gnu/

I'm not entirely sure what "installed from packages" refers to -- did you
install the rssh package in Ubuntu?  The mkchroot.sh script that is
shipped with that package (in /usr/share/doc/rssh) should already handle
this case correctly via the following:

# On Debian with multiarch, the libnss files are in /lib/<triplet>, where
# <triplet> is the relevant architecture triplet.  Just copy everything
# that's installed, since we're not sure which ones we'll need.
echo "copying name service resolution libraries..."
if [ -n "$(find /lib -maxdepth 1 -name 'libnss*_' -print -quit)" ] ; then
    tar -cf - /lib/libnss_compat* /lib/libnss*_files* \
        | tar -C "$jail_dir" -xvf - | sed 's/^/\t/'
else
    tar -cf - /lib/*/libnss_compat* /lib/*/libnss*_files* \
        | tar -C "$jail_dir" -xvf - | sed 's/^/\t/'
fi

-- 
Russ Allbery (rr...@st...)             <http://www.eyrie.org/~eagle/>