busybox/examples/var_service/supplicant_if/run

#!/bin/sh

exec 2>&1
exec </dev/null

pwd="$PWD"

if="${PWD##*/dhcp_}"

echo "* Upping iface $if"
# "or sleep" idiom prevents rapid respawning if iface does not exist
ip link set dev "$if" up || { sleep 5; exit; }

##echo "* Powersave disable on $if"
##iw dev "$if" set power_save off

echo "* Starting wpa_supplicant"
exec \
env - PATH="$PATH" \
softlimit \
setuidgid root \
wpa_supplicant -i "$if" -c "$pwd/wpa_supplicant.conf" -d