Initial commit

package/base-files/files/lib/preinit/81_urandom_seed

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+log_urandom_seed() {
+    echo "urandom-seed: $1" > /dev/kmsg
+}
+
+_do_urandom_seed() {
+    [ -f "$1" ] || { log_urandom_seed "Seed file not found ($1)"; return; }
+    [ -O "$1" -a -G "$1" -a ! -x "$1" ] || { log_urandom_seed "Wrong owner / permissions for $1"; return; }
+
+    log_urandom_seed "Seeding with $1"
+    cat "$1" > /dev/urandom
+}
+
+do_urandom_seed() {
+    [ -c /dev/urandom ] || { log_urandom_seed "Something is wrong with /dev/urandom"; return; }
+
+    _do_urandom_seed "/etc/urandom.seed"
+
+    SEED="$(uci -q get system.@system[0].urandom_seed)"
+    [ "${SEED:0:1}" == "/" -a "$SEED" != "/etc/urandom.seed" ] && _do_urandom_seed "$SEED"
+}
+
+boot_hook_add preinit_main do_urandom_seed