openwrt/package/system/urandom-seed/files/sbin/urandom_seed

#!/bin/sh
set -e

trap '[ "$?" -eq 0 ] || echo "An error occured" >&2' EXIT

save() {
    touch "$1.tmp"
    chown root:root "$1.tmp"
    chmod 600 "$1.tmp"
    getrandom 512 > "$1.tmp"
    mv "$1.tmp" "$1"
    echo "Seed saved ($1)"
}

SEED="$(uci -q get system.@system[0].urandom_seed || true)"
[ "${SEED:0:1}" = "/" ] && save "$SEED"

SEED=/etc/urandom.seed
[ ! -f $SEED ] && save "$SEED"
true
base-files: use procd init for urandom_seed Previous implementation was blocking the init and breaking halt/reboot/sysupgrade (reported by Daniel Golle) v2: use procd logging, use set -e + trap for error handling Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com> Tested-by: Daniel Golle <daniel@makrotopia.org> 2016-07-20 12:22:44 +00:00			`#!/bin/sh`
			`set -e`

			`trap '[ "$?" -eq 0 ] \|\| echo "An error occured" >&2' EXIT`

			`save() {`
			`touch "$1.tmp"`
			`chown root:root "$1.tmp"`
			`chmod 600 "$1.tmp"`
			`getrandom 512 > "$1.tmp"`
			`mv "$1.tmp" "$1"`
			`echo "Seed saved ($1)"`
			`}`

			`SEED="$(uci -q get system.@system[0].urandom_seed \|\| true)"`
base-files: fix several bashisms For equality test a simple = is sufficient, the == is usually disregarded as bashism. Signed-off-by: Michael Heimpold <mhei@heimpold.de> 2018-12-04 22:12:05 +00:00			`[ "${SEED:0:1}" = "/" ] && save "$SEED"`
base-files: use procd init for urandom_seed Previous implementation was blocking the init and breaking halt/reboot/sysupgrade (reported by Daniel Golle) v2: use procd logging, use set -e + trap for error handling Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com> Tested-by: Daniel Golle <daniel@makrotopia.org> 2016-07-20 12:22:44 +00:00
			`SEED=/etc/urandom.seed`
			`[ ! -f $SEED ] && save "$SEED"`
			`true`