fgetty is derived from mingetty but hacked until it would link against diet libc to produce the smallest memory footprint possible for a simple yet complete getty.
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Turning echo off before executing login, adding users to group "console" if it's there, and accepting passwords longer than 8 characters for MD5 passwords.
fgetty now comes with a checkpassword with /etc/passwd and /etc/shadow support. Also, the checkpassword API (and login2) is augmented so that your TTY now actually belongs to you after you log in.
A checkpassword based login implementation has been added to allow the replacement of the password encryption routine on the fly without touching libc or login.