FreeBSD Issue?

[Anonymous]

I’m having difficulty using TrueRNG with FreeBSD 10 on one of my servers.
The kernel recognizes the device, but when I try to use DD or other programs
to read from the device, it will read a few (tens to hundreds) of byte then
return EOF.

Does anyone know of a work around or fix?

[Ubld.it StaffModerator]

What I think is going on here is the tty mode, for Linux we’re using a udev.d script that changes the term to RAW mode (using the stty command, e.g. stty /dev/ttyACM0 raw).
Try to do these steps manually for now and see if you have the same issue.
“/bin/stty raw -echo -ixoff -F /dev/insertTTYdevicenamehere”
It looks like we should be able to automate this with devd (appears to be closest thing to udevd in FreeBSD).

[Anonymous]

I was having this exact same issue on both linux (multiple distributions) and OSX. Reading from dd would only read a few bytes and then quit. Running the raw command above solved the problem. I did not run the udev script before trying to read directly with DD, which obviously caused the problem. Perhaps this should be in the FAQ or manual. Thanks!

[Ubld.it StaffModerator]

Good idea, I’ll add it to the FAQ page.

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