Openwrt/package/system/urandom-seed/files/lib/preinit/81_urandom_seed
Adrian Schmutzler 331892f85f treewide: drop shebang from non-executable lib files
This drops the shebang from another bunch of files in various /lib
folders, as these are sourced and the shebang is useless.

Fix execute bit in one case, too.

This should cover almost all trivial cases now, i.e. where /lib is
actually used for library files.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2021-01-29 14:29:41 +01:00

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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