Initial commit

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

@@ -0,0 +1,20 @@
+#!/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