Hello all,

I've got a script I'm working on here:

but the pipe there is giving me a bit of trouble. If I run it as is, the pipe is treated as being outside of the chroot. I've tried single and double quotes around the command, but chroot complains about "no such file or directory" when I do that. Is there any way I can get that pipe to be a part of the command that chroot runs?

If it helps, what's going on here is we have an application that takes input on stdin and outputs a result to stdout. This is run from xinetd, which a separate application connects to, so stdin ends up coming through there.

Thanks in advance for any help.

Try enclosing the whole command line in parentheses:
( chroot /usr/rh8 echo $line | /path/to/ourapp )

Doesn't seem to work either. Getting no such file or directory on the application inside the chroot. I'm assuming that means the pipe is happening outside the chroot because I know the command exists in there.

Do you run it as a super user?
Does your "/bin/sh" links to bash (even though it might not be important - any shell should be good)?
Do you really have "/usr/rh8/path/to/ourapp" ?

How about trying:
chroot /usr/hr8 echo $line | chroot /usr/rh8 /path/to/ourapp

The /bin/sh on the machine is pointing to /bin/bash, in the chroot it's not but it is the same (we did an scp of the filesystem which doesn't maintain the links). Just did an ls and the path to ourapp is correct in the script.

Perfect! That did it for me.

Thanks everyone.