Samanta Navarro 4ad359ccc6 subsystem: Prevent endless loop ...

If a user has home directory "/" and login shell "*" then login and su
enter an endless loop by constantly switching to the next subsystem.

This could also be achieved with a layered approach so just checking
for "/" as home directory is not enough to protect against such a
misconfiguration.

Just break the loop if it progressed too far. I doubt that this has
negative impact on any real setup.

Signed-off-by: Samanta Navarro <ferivoz@riseup.net>

2023-05-25 08:25:42 -05:00

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