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#!/bin/bash
# called by dracut
cmdline() {
is_zfcp() {
local _dev=$1
local _devpath
_devpath=$(
cd -P /sys/dev/block/"$_dev" || exit
echo "$PWD"
)
local _sdev _scsiid _hostno _lun _wwpn _ccw _port_type
local _allow_lun_scan _is_npiv
read -r _allow_lun_scan < /sys/module/zfcp/parameters/allow_lun_scan
[ "${_devpath#*/sd}" == "$_devpath" ] && return 1
_sdev="${_devpath%%/block/*}"
[ -e "${_sdev}"/fcp_lun ] || return 1
_scsiid="${_sdev##*/}"
_hostno="${_scsiid%%:*}"
[ -d /sys/class/fc_host/host"${_hostno}" ] || return 1
read -r _port_type < /sys/class/fc_host/host"${_hostno}"/port_type
case "$_port_type" in
NPIV*)
_is_npiv=1
;;
esac
read -r _ccw < "${_sdev}"/hba_id
if [ "$_is_npiv" ] && [ "$_allow_lun_scan" = "Y" ]; then
echo "rd.zfcp=${_ccw}"
else
read -r _lun < "${_sdev}"/fcp_lun
read -r _wwpn < "${_sdev}"/wwpn
echo "rd.zfcp=${_ccw},${_wwpn},${_lun}"
fi
return 0
}
[[ $hostonly ]] || [[ $mount_needs ]] && {
for_each_host_dev_and_slaves_all is_zfcp
} | sort | uniq
}
# called by dracut
check() {
local _arch=${DRACUT_ARCH:-$(uname -m)}
local _ccw
[ "$_arch" = "s390" -o "$_arch" = "s390x" ] || return 1
[[ $hostonly ]] || [[ $mount_needs ]] && {
found=0
for _ccw in /sys/bus/ccw/devices/*/host*; do
[ -d "$_ccw" ] || continue
found=$((found + 1))
done
[ $found -eq 0 ] && return 255
}
return 0
}
# called by dracut
depends() {
echo bash
return 0
}
# called by dracut
install() {
inst_hook cmdline 30 "$moddir/parse-zfcp.sh"
if [[ $hostonly_cmdline == "yes" ]]; then
local _zfcp
for _zfcp in $(cmdline); do
printf "%s\n" "$_zfcp" >> "${initdir}/etc/cmdline.d/94zfcp.conf"
done
fi
if [[ $hostonly ]]; then
inst_rules_wildcard "51-zfcp-*.rules"
inst_rules_wildcard "41-zfcp-*.rules"
fi
}
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