3946a55291
This commit: 1) seed /dev/urandom with the saved seeds as early as possible (see /lib/preinit/81_urandom_seed) 2) save a seed at /etc/urandom.seed if it doesn't exists 3) save a new seed each boot at "system.@system[0].urandom_seed" (see /etc/init.d/urandom_seed) We use getrandom() so we are sure /dev/urandom pool is initialized Seed size is 512 bytes (ie /proc/sys/kernel/random/poolsize / 8) it's the same size as in ubuntu 14.04 and all systemd systems Seeding /dev/urandom doesn't change entropy estimation, so we still have "random: ubus urandom read with 4 bits of entropy available" messages in the logs, but we can now ignore them if after "urandom-seed: Seeding with ..." message Saving a new seed on each boot is disabled by default to avoid too much writes without user consent v2: log preinit messages to /dev/kmsg v3: use non generic function name for logging, as /lib/preinit/ files are all sourced together in /etc/preinit v4: after a lot of discussion on the ML, use a uci config param v5: config param is now the path of the seed Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com> Acked-by: Jo-Philipp Wich <jo@mein.io> |
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.. | ||
board.d | ||
hotplug.d/net | ||
init.d | ||
iproute2 | ||
rc.button | ||
sysctl.d | ||
uci-defaults | ||
banner | ||
banner.failsafe | ||
device_info | ||
diag.sh | ||
fstab | ||
group | ||
hosts | ||
inittab | ||
openwrt_release | ||
openwrt_version | ||
os-release | ||
passwd | ||
preinit | ||
profile | ||
protocols | ||
rc.common | ||
rc.local | ||
services | ||
shadow | ||
shells | ||
sysctl.conf | ||
sysupgrade.conf |