From: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Sun, 31 Jul 2016 11:43:00 +0000 (+0200)
Subject: clear passwords with explicit_bzero
X-Git-Url: https://git.xinqibao.xyz/slock.git/commitdiff_plain/a7afade1701a809f6a33b53525d59dd29b38d381?ds=inline;hp=a7afade1701a809f6a33b53525d59dd29b38d381

clear passwords with explicit_bzero

Make sure to explicitly clear memory that is used for password input. memset
is often optimized out by the compiler.

Brought to attention by the OpenBSD community, see:
https://marc.info/?t=146989502600003&r=1&w=2
Thread subject: x11/slock: clear passwords with explicit_bzero

Changes:

- explicit_bzero.c import from libressl-portable.
- Makefile: add COMPATSRC for compatibility src.
- config.mk: add separate *BSD section in config.mk to simply uncomment it on
  these platforms.
---