apmanager: store config files under /var/run/apmanager
This prevents non-root/apmanager users from modifying the files generated
by apmanager.
Also add a wrapper class for base::WriteFile to prevent any file writes
during unittest.
BUG=chromium:446679
TEST=USE="asan clang" FEATURES=test emerge-$BOARD apmanager
Start an AP service using apmanager, verify hostapd and dhcp server
config files are store in "/var/run/apmanager/hostapd" and
"/var/run/apmanager/dnsmasq" respectively.
Change-Id: I2bf2d34a8c95c9493f2cf5d5eb4895fefcdae8dc
Reviewed-on: https://chromium-review.googlesource.com/239632
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Zeping Qiu <zqiu@chromium.org>
Trybot-Ready: Zeping Qiu <zqiu@chromium.org>
Tested-by: Zeping Qiu <zqiu@chromium.org>
12 files changed