[Bug 207069] setting loader password in loader.conf disallows boot

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207069

--- Comment #1 from david at dcrosstech.com ---
Created attachment 167348
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=167348&action=edit
Works for me!

uses getenv on 'kernelname' to see if the kernel is loaded (copied from other
places in the code), if it is, calls load_kernel and load_modules (attempted
with load_kernel_and_modules, but that was throwing a stack underflow, and I
don't understand the code well enough to just throw things onto the stack,
other parts of the code was also calling load_kernel and load_modules
separately), and then continue and execute autoboot as normal, restoring the
functionality from 10.1 and earlier.

Testing under the following conditions:
1) no password set  -- doesn't delay boot, or interfere with anthing as
expected
2) password set -- autboot as designed, asks for password if interrupted.
3) password set and kernel loaded -- does not attempt to reload kenrel or
modules, continutes with autoboot
4) zfs_load="yes" set in loader.conf  loads kernel and zfs module, continues
with autoboot.

Untested:modules loaded, but no kernel.  Is this even legal/supported?

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