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# urandom - load seed-file into kernel pseudorandom number generator
#
# This task is run on startup, as early as possible.
description "load seed-file into urandom"
# Initialize the PRNG as early as possible.
# Actually, nothing upstart can do is early enough,
# but this is better than nothing.
# Note that the root filesystem is probably still read-only at this point.
start on startup
# The "urandom" event means the PRNG has been initialized.
# You it may be possible to use /dev/random before this, at your own risk.
emits urandom
task
console output
script
SAVEDFILE=/var/lib/urandom/random-seed # probably belongs in a config file
if test -r "$SAVEDFILE" ; then
cat "$SAVEDFILE" > /dev/urandom
initctl emit urandom
fi
end script
# The seed file SHOULD NOT be reused.
# We rely on urandom-save and urandom-adios to rewrite the seed file.
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