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#!/bin/bash
allow_device() {
local ccw=$1
if [ -x /sbin/cio_ignore ] && cio_ignore -i "$ccw" > /dev/null; then
cio_ignore -r "$ccw"
fi
}
if [[ -f /sys/firmware/ipl/ipl_type ]] && [[ $(< /sys/firmware/ipl/ipl_type) == "ccw" ]]; then
allow_device "$(< /sys/firmware/ipl/device)"
fi
for dasd_arg in $(getargs root=) $(getargs resume=); do
[[ $dasd_arg =~ /dev/disk/by-path/ccw-* ]] || continue
ccw_dev="${dasd_arg##*/ccw-}"
allow_device "${ccw_dev%%-*}"
done
for dasd_arg in $(getargs rd.dasd=); do
IFS=',' read -r -a devs <<< "$dasd_arg"
declare -p devs
for dev in "${devs[@]}"; do
case "$dev" in
autodetect | probeonly) ;;
*-*)
IFS="-" read -r start end _ <<< "${dev%(ro)}"
prefix=${start%.*}
start=${start##*.}
for rdev in $(seq $((16#$start)) $((16#$end))); do
allow_device "$(printf "%s.%04x" "$prefix" "$rdev")"
done
;;
*)
IFS="." read -r sid ssid chan _ <<< "${dev%(ro)}"
allow_device "$(printf "%01x.%01x.%04x" $((16#$sid)) $((16#$ssid)) $((16#$chan)))"
;;
esac
done
done
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