openrc/conf.d/urandom
Jason A. Donenfeld 076c2552ae Use seedrng for seeding the random number generator
The RNG can't actually be seeded from a shell script, due to the
reliance on ioctls. For this reason, the seedrng project provides a
basic script meant to be copy and pasted into projects like OpenRC and
tweaked as needed: https://git.zx2c4.com/seedrng/about/

This commit imports it into OpenRC and wires up /etc/init.d/urandom to
call it. It shouldn't be called by other things on the system, so it
lives in rc_sbindir.

Closes #506.
Closes #507.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-03-26 19:16:27 -05:00

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# Sometimes you want to have urandom start before "localmount"
# (say for crypt swap), so you will need to customize this
# behavior. If you have /var on a separate partition, then
# make sure this path lives on your root device somewhere.
seed_dir="/var/lib/seedrng"
lock_file="/var/run/seedrng.lock"
# Set this to true if you do not want seed files to actually
# credit the RNG. Set this if you plan to replicate this
# file system image and do not have the wherewithal to first
# delete the contents of /var/lib/seedrng.
skip_credit="false"