Re: Installing dnscache with runit, without other djb utils

[lanek@novenine.com]

> there's an error here worth highlighting given the "recently discovered"
> issues with DNS query port randomisation.

Detail the error please.

From my [modified] rc.S:

1)

# -- ** initialize /dev/urandom:
_POOLSIZE=/proc/sys/kernel/random/poolsize
_SEED=/etc/random-seed
_URANDOM=/dev/urandom

if [ -f $_SEED ]; then # -- carry an entropy pool (improve randomness).
    yellow "using $_SEED to initialize $_URANDOM ..."
    cat $_SEED > $_URANDOM
fi

if [ ! -r $_POOLSIZE ]; then
    _BYTES=512
else
    _BYTES=`cat $_POOLSIZE`
fi
dd if=$_URANDOM of=$_SEED count=1 bs=$_BYTES 2> /dev/null
chmod 600 $_SEED


(And similarly/complementarily, ditto within rc.6.)

Then from rc.M:

2)

yellow 'starting runit ...' ;   # -- runit "stage 2."
csh -cf 'runsvdir-start &'


Cheers,

/Roy

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