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## /usr/lib/network/globals needs to be sourced before this file
## Determine the system interface of an rfkill device
# $1: interface name
# $2: rfkill name
rf_get_path() {
local interface=$1 rfkill_name=${2:-auto} path
if [[ $rfkill_name == "auto" ]]; then
path=$(find -L "/sys/class/net/$interface/" -maxdepth 2 -type d -name "rfkill*" 2> /dev/null | head -n 1)
if [[ $path ]]; then
echo "$path"
return 0
fi
report_error "No rfkill switch available on interface '$interface'"
else
for path in /sys/class/rfkill/*; do
if [[ $(< "$path/name") == "$rfkill_name" ]]; then
echo "$path"
return 0
fi
done
report_error "No rfkill switch with name '$rfkill_name'"
fi
return 1
}
## Determine the blocking status of an rfkill device
# $1: interface name
# $2: rfkill name
rf_status() {
local path
path=$(rf_get_path "$@") || return 1
if (( $(< "$path/hard" ) )); then
echo "hard"
elif (( $(< "$path/soft" ) )); then
echo "soft"
fi
}
## Set the soft blocking status of an rfkill device
# $1: blocking status
# $2: interface name
# $3: rfkill name
rf_set() {
local block=$1 path
shift
path=$(rf_get_path "$@") || return 1
report_debug "${FUNCNAME[1]}: echo '$block' > '$path/soft'"
echo "$block" > "$path/soft"
timeout_wait 1 '(( $(< "$path/soft") == block ))'
}
## Block transmission through a wireless device
# $1: interface name
# $2: rfkill name
rf_disable() {
rf_set 1 "$@"
}
## Unblock transmission through a wireless device
# $1: interface name
# $2: rfkill name
rf_enable() {
local status
status=$(rf_status "$@") || return 1
case $status in
hard)
report_error "Transmission is hard-blocked on interface '$interface'"
return 1
;;
soft)
rf_set 0 "$@"
;;
esac
}
# vim: ft=sh ts=4 et sw=4:
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