reboot and initctl does not work in sulogin

[troglobit]

• At least the reboot/poweroff/shutdown/etc family of commands should work from a sulogin (rescue) session.
• Document limited operating mode of Finit (initctl) in rescue mode.

Discussed in #243

^{Originally posted by hongkongkiwi April 22, 2022}
So I jumped into rescue mode to test it out (I have sulogin on my system) it seems the internal finit communication doesn't work properly (is this intentional?)

I noticed it as I like to type (reboot):

# reboot
reboot: Failed connecting to finit: No such file or directory
# ls -lh /sbin/reboot
lrwxrwxrwx    1 root     root           7 Apr  7  2021 /sbin/reboot -> initctl
# which reboot
/sbin/reboot

Same thing happens with initctl

# initctl status
initctl: Failed connecting to finit: No such file or directory
# which initctl
/sbin/initctl
# ls -lh /sbin/initctl
-rwxr-xr-x    1 root     root       49.6K Apr  7  2021 /sbin/initctl

Also finit itself:

# finit 6
initctl: Failed connecting to finit: No such file or directory

Using the exit command works fine to continue to boot the system as normal (presumably because it's a builtin shell command)

[troglobit]

Fixed, sort of. When using the bundled sulogin reboot(initctl) can detect it's in sulogin mode and trigger over to default to -f (force). Nothing can be done about initctl's other commands since Finit is paused in the background when running the system in this diminished mode. This has been documented.