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Allow urandom location to be customized #134489.

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This commit is contained in:
Mike Frysinger 2007-06-22 02:57:40 +00:00
parent 1bf11dcfb6
commit 6e8f3dabf7
3 changed files with 22 additions and 7 deletions
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4
ChangeLog
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@ -1,6 +1,10 @@
# ChangeLog for Gentoo System Intialization ("rc") scripts # ChangeLog for Gentoo System Intialization ("rc") scripts
# Copyright 1999-2007 Gentoo Foundation; Distributed under the GPLv2 # Copyright 1999-2007 Gentoo Foundation; Distributed under the GPLv2
21 Jun 2007; Mike Frysinger <vapier@gentoo.org>:
Allow urandom location to be customized #134489.
02 Jun 2007; Mike Frysinger <vapier@gentoo.org>: 02 Jun 2007; Mike Frysinger <vapier@gentoo.org>:
Fix from comio for /proc/filesystems typo in localmount #180621. Fix from comio for /proc/filesystems typo in localmount #180621.

8
conf.d/urandom Normal file
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@ -0,0 +1,8 @@
# /etc/conf.d/urandom
# 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.
URANDOM_SEED="/var/run/random-seed"

17
init.d/urandom
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@ -2,6 +2,8 @@
# Copyright 1999-2007 Gentoo Foundation # Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2 # Distributed under the terms of the GNU General Public License v2
URANDOM_SEED=${URANDOM_SEED:-/var/run/random-seed}
depend() { depend() {
need localmount need localmount
} }
@ -13,23 +15,24 @@ save_seed() {
poolsize=$(($(cat /proc/sys/kernel/random/poolsize) / 4096)) poolsize=$(($(cat /proc/sys/kernel/random/poolsize) / 4096))
fi fi
umask 077 ( # sub shell to prevent umask pollution
dd if=/dev/urandom of=/var/run/random-seed count=${poolsize} 2>/dev/null umask 077
dd if=/dev/urandom of="${URANDOM_SEED}" count=${poolsize} 2>/dev/null
)
} }
start() { start() {
[ -c /dev/urandom ] || return [ -c /dev/urandom ] || return
if [ -f /var/run/random-seed ] ; then if [ -f "${URANDOM_SEED}" ] ; then
cat /var/run/random-seed > /dev/urandom cat "${URANDOM_SEED}" > /dev/urandom
fi fi
if ! rm -f /var/run/random-seed ; then if ! rm -f "${URANDOM_SEED}" ; then
ewarn "Skipping /var/run/random-seed initialization (ro root?)" ewarn "Skipping ${URANDOM_SEED} initialization (ro root?)"
return 0 return 0
fi fi
ebegin "Initializing random number generator" ebegin "Initializing random number generator"
save_seed save_seed
eend $? "Error initializing random number generator" eend $? "Error initializing random number generator"
umask 022
} }
stop() { stop() {