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|
#!/bin/bash
type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh
function sysecho() {
file="$1"
shift
local i=1
while [ $i -le 10 ]; do
if [ ! -f "$file" ]; then
sleep 1
i=$((i + 1))
else
break
fi
done
local status
read -r status < "$file"
if [[ $status != "$*" ]]; then
[ -f "$file" ] && echo "$*" > "$file"
fi
}
function dasd_settle() {
local dasd_status=/sys/bus/ccw/devices/$1/status
if [ ! -f "$dasd_status" ]; then
return 1
fi
local i=1
while [ $i -le 60 ]; do
local status
read -r status < "$dasd_status"
case $status in
online | unformatted)
return 0
;;
*)
sleep 0.1
i=$((i + 1))
;;
esac
done
return 1
}
function dasd_settle_all() {
for dasdccw in $(while read -r line || [ -n "$line" ]; do echo "${line%%(*}"; done < /proc/dasd/devices); do
if ! dasd_settle "$dasdccw"; then
echo $"Could not access DASD $dasdccw in time"
return 1
fi
done
return 0
}
# prints a canonocalized device bus ID for a given devno of any format
function canonicalize_devno() {
case ${#1} in
3) echo "0.0.0${1}" ;;
4) echo "0.0.${1}" ;;
*) echo "${1}" ;;
esac
return 0
}
# read file from CMS and write it to /tmp
function readcmsfile() { # $1=dasdport $2=filename
local dev
local numcpus
local devname
local ret=0
if [ $# -ne 2 ]; then return; fi
# precondition: udevd created dasda block device node
if ! dasd_cio_free -d "$1"; then
echo $"DASD $1 could not be cleared from device blacklist"
return 1
fi
modprobe dasd_mod dasd="$CMSDASD"
modprobe dasd_eckd_mod
udevadm settle
# precondition: dasd_eckd_mod driver incl. dependencies loaded,
# dasd_mod must be loaded without setting any DASD online
dev=$(canonicalize_devno "$1")
numcpus=$(
while read -r line || [ -n "$line" ]; do
if strstr "$line" "# processors"; then
echo "${line##*:}"
break
fi
done < /proc/cpuinfo
)
if [ "${numcpus}" -eq 1 ]; then
echo 1 > /sys/bus/ccw/devices/"$dev"/online
else
if ! sysecho /sys/bus/ccw/devices/"$dev"/online 1; then
echo $"DASD $dev could not be set online"
return 1
fi
udevadm settle
if ! dasd_settle "$dev"; then
echo $"Could not access DASD $dev in time"
return 1
fi
fi
udevadm settle
devname=$(
cd /sys/bus/ccw/devices/"$dev"/block || exit
set -- *
[ -b /dev/"$1" ] && echo "$1"
)
devname=${devname:-dasda}
[[ -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 $1."
ret=1
fi
if ! sysecho /sys/bus/ccw/devices/"$dev"/online 0; then
echo $"DASD $dev could not be set offline again"
#return 1
fi
udevadm settle
# unbind all dasds to unload the dasd modules for a clean start
(
cd /sys/bus/ccw/drivers/dasd-eckd || exit
for i in *.*; do echo "$i" > unbind; done
)
udevadm settle
modprobe -r dasd_eckd_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 [[ $NETTYPE ]]; then
(
echo -n "$NETTYPE","$SUBCHANNELS"
[[ $PORTNAME ]] && echo -n ",portname=$PORTNAME"
[[ $LAYER2 ]] && echo -n ",layer2=$LAYER2"
[[ $NETTYPE == "ctc" ]] && [[ $CTCPROT ]] && echo -n ",protocol=$CTCPROT"
echo
) >> /etc/ccw.conf
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
znet_cio_free
fi
if [[ $DASD ]] && [[ $DASD != "none" ]]; then
echo "$DASD" | normalize_dasd_arg > /etc/dasd.conf
echo "options dasd_mod dasd=$DASD" > /etc/modprobe.d/dasd_mod.conf
dasd_cio_free
fi
unset _do_zfcp
for i in ${!FCP_*}; do
echo "${!i}" | while read -r port rest || [ -n "$port" ]; do
case $port in
*.*.*) ;;
*.*)
port="0.$port"
;;
*)
port="0.0.$port"
;;
esac
echo "$port" "$rest" >> /etc/zfcp.conf
done
_do_zfcp=1
done
[[ $_do_zfcp ]] && zfcp_cio_free
unset _do_zfcp
}
[[ $CMSDASD ]] || CMSDASD=$(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
|
