/boot/check-password.4th Read File Content From USB-Stick

[fr33bsd]

Hi,

I would like to cat a key file from attached usb stick to geli in check-password.4th if (and only if) a usb stick is attached to the system (and after the geli magic check has detected encrypted partitions). If it is not attached regular password prompt should appear.

How to do that?

 

[SirDice]

The *.4th files are only used by the Forth loader(8). Modern version use the LUA loader(8).

 

[fr33bsd]

The *.4th files are only used by the Forth loader(8). Modern version use the LUA loader(8).

ok, I guess I have to learn lua.

At this moment I don't know how to open a file in lua or how to use

fopen (addr len mode -- fd)

But I could use loader command

lsdev [-v]

to check if the usbdevice is plugged in.... maybe
But use loader commands from within lua?

 

[fr33bsd]

ok, I guess I have to learn lua.

At this moment I don't know how to open a file in lua or how to use

But I could use loader command

to check if the usbdevice is plugged in.... maybe
But use loader commands from within lua?

There is a function readFile in config.lua ?, but how do the devices names look like and how to mount its UFS partition to access a file in that boot phase? I'd guess there is no mounting. ?