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#!/bin/bash
type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh
type zdev_parse_dasd_list > /dev/null 2>&1 || . /lib/s390-tools/zdev-from-dasd_mod.dasd
function dasd_settle() {
local dasd_status
dasd_status=$(lszdev dasd "$1" --columns ATTRPATH:status --no-headings --active)
if [ ! -f "$dasd_status" ]; then
return 1
fi
local i=1
while [ $i -le 60 ]; do
local status
status=$(lszdev dasd "$1" --columns ATTR:status --no-headings --active)
case $status in
online | unformatted)
return 0
;;
*)
sleep 0.1
i=$((i + 1))
;;
esac
done
return 1
}
# read file from CMS and write it to /tmp
function readcmsfile() { # $1=dasdport $2=filename
local dev
local devname
local ret=0
if [ $# -ne 2 ]; then return; fi
# precondition: udevd created block device node
dev="$1"
chzdev --enable --active --yes --quiet --no-root-update --force dasd "$dev" || return 1
if ! dasd_settle "$dev"; then
echo $"Could not access DASD $dev in time"
return 1
fi
devname=$(lszdev dasd "$dev" --columns NAMES --no-headings --active)
[[ -n $devname ]] || return 1
[[ -d /mnt ]] || mkdir -p /mnt
if cmsfs-fuse --to=UTF-8 -a /dev/"$devname" /mnt; then
cat /mnt/"$2" > /run/initramfs/"$2"
umount /mnt || umount -l /mnt
udevadm settle
else
echo $"Could not read conf file $2 on CMS DASD $1."
ret=1
fi
chzdev --disable --active --yes --quiet --no-root-update --force dasd "$dev"
# unbind all dasds to unload the dasd modules for a clean start
(
cd /sys/bus/ccw/drivers/dasd-eckd || exit
for i in *.*; do echo "$i" > unbind 2> /dev/null; done
)
(
cd /sys/bus/ccw/drivers/dasd-fba || exit
for i in *.*; do echo "$i" > unbind 2> /dev/null; done
)
udevadm settle
modprobe -r dasd_eckd_mod
udevadm settle
modprobe -r dasd_fba_mod
udevadm settle
modprobe -r dasd_diag_mod
udevadm settle
modprobe -r dasd_mod
udevadm settle
return $ret
}
processcmsfile() {
source /tmp/cms.conf
SUBCHANNELS="$(echo "$SUBCHANNELS" | sed 'y/ABCDEF/abcdef/')"
if [[ $NETTYPE ]]; then
_cms_attrs=""
if [[ $PORTNAME ]]; then
if [[ $NETTYPE == lcs ]]; then
_cms_attrs="$_cms_attrs portno=$PORTNAME"
else
_cms_attrs="$_cms_attrs portname=$PORTNAME"
fi
fi
[[ $LAYER2 ]] && _cms_attrs="$_cms_attrs layer2=$LAYER2"
[[ $CTCPROT ]] && _cms_attrs="$_cms_attrs protocol=$CTCPROT"
# shellcheck disable=SC2086
chzdev --enable --persistent --yes --no-root-update --force \
"$NETTYPE" "$SUBCHANNELS" $_cms_attrs 2>&1 | vinfo
OLDIFS=$IFS
IFS=,
read -r -a subch_array <<< "indexzero,$SUBCHANNELS"
IFS=$OLDIFS
devbusid=${subch_array[1]}
if [ "$NETTYPE" = "ctc" ]; then
driver="ctcm"
else
driver=$NETTYPE
fi
# shellcheck disable=SC2016
printf 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="%s", KERNELS=="%s", ENV{INTERFACE}=="?*", RUN+="/sbin/initqueue --onetime --unique --name cmsifup-$name /sbin/cmsifup $name"\n' "$driver" "$devbusid" > /etc/udev/rules.d/99-cms.rules
# remove the default net rules
rm -f -- /etc/udev/rules.d/91-default-net.rules
# shellcheck disable=SC2016
[[ -f /etc/udev/rules.d/90-net.rules ]] \
|| printf 'SUBSYSTEM=="net", ACTION=="online", RUN+="/sbin/initqueue --onetime --env netif=$name source_hook initqueue/online"\n' >> /etc/udev/rules.d/99-cms.rules
udevadm control --reload
fi
if [[ $DASD ]] && [[ $DASD != "none" ]]; then
echo "$DASD" | zdev_parse_dasd_list globals 2>&1 | vinfo
echo "$DASD" | zdev_parse_dasd_list ranges 2>&1 | vinfo
fi
for i in ${!FCP_*}; do
echo "${!i}" | while read -r port rest || [ -n "$port" ]; do
case $port in
*.*.*) ;;
*.*)
port="0.$port"
;;
*)
port="0.0.$port"
;;
esac
# shellcheck disable=SC2086
set -- $rest
SAVED_IFS="$IFS"
IFS=":"
# Intentionally do not dynamically activate now, but only generate udev
# rules, which activate the device later during udev coldplug.
if [[ -z $rest ]]; then
chzdev --enable --persistent \
--no-settle --yes --quiet --no-root-update --force \
zfcp-host "$port" 2>&1 | vinfo
else
chzdev --enable --persistent \
--no-settle --yes --quiet --no-root-update --force \
zfcp-lun "$port:$*" 2>&1 | vinfo
fi
IFS="$SAVED_IFS"
done
done
}
[[ $CMSDASD ]] || CMSDASD=$(getarg "CMSDASD=")
[[ $CMSCONFFILE ]] || CMSCONFFILE=$(getarg "CMSCONFFILE=")
# Parse configuration
if [ -n "$CMSDASD" -a -n "$CMSCONFFILE" ]; then
if readcmsfile "$CMSDASD" "$CMSCONFFILE"; then
ln -s /run/initramfs/"$CMSCONFFILE" /tmp/"$CMSCONFFILE"
ln -s /run/initramfs/"$CMSCONFFILE" /tmp/cms.conf
processcmsfile
fi
fi
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