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pythonbashprocessterminatechroot

Python script opening a bash prompt terminating the script

I want to write a chroot wrapper in python. The script will be copying some files, setting up some other stuff and then executing chroot and should land me in a chroot shell.

The tricky part is that I want no python processes running after I am in the chroot.

In other words, python should do the setup work, call chroot and terminate itself, leaving me in a chroot shell. When I exit the chroot, I should be in a directory where I was when I invoked the python script.

Is this possible?

Solution

  • My first thought would be to use one of the os.exec* functions. These will replace the Python process with the chroot process (or whatever you decide to run with exec*).

    # ... do setup work
os.execl('/bin/chroot', '/bin/chroot', directory_name, shell_path)

    (or something like that)