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#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
# called by dracut
cmdline() {
# shellcheck disable=SC2317 # called later by for_each_host_dev_and_slaves
get_lunmask() {
local _dev=$1
local _devpath _sdev _lun _rport _end_device _classdev _wwpn _sas_address
_devpath=$(
cd -P /sys/dev/block/"$_dev" || exit
echo "$PWD"
)
[ "${_devpath#*/sd}" == "$_devpath" ] && return 1
_sdev="${_devpath%%/block/*}"
_lun="${_sdev##*:}"
# Check for FibreChannel
_rport="${_devpath##*/rport-}"
if [ "$_rport" != "$_devpath" ]; then
_rport="${_rport%%/*}"
_classdev="/sys/class/fc_remote_ports/rport-${_rport}"
[ -d "$_classdev" ] || return 1
read -r _wwpn < "${_classdev}"/port_name
echo "rd.lunmask=fc,${_wwpn},${_lun}"
return 0
fi
# Check for SAS
_end_device="${_devpath##*/end_device-}"
if [ "$_end_device" != "$_devpath" ]; then
_end_device="${_end_device%%/*}"
_classdev="/sys/class/sas_device/end_device-${_end_device}"
[ -e "$_classdev" ] || return 1
read -r _sas_address < "${_classdev}"/sas_address
echo "rd.lunmask=sas,${_sas_address},${_lun}"
return 0
fi
return 1
}
[[ $hostonly ]] || [[ $mount_needs ]] && {
for_each_host_dev_and_slaves_all get_lunmask
} | sort | uniq
}
# called by dracut
check() {
[[ $hostonly ]] || [[ $mount_needs ]] && {
[ -w /sys/module/scsi_mod/parameters/scan ] || return 255
read -r scan_type < /sys/module/scsi_mod/parameters/scan
[ "$scan_type" = "manual" ] && return 0
return 255
}
return 0
}
# called by dracut
depends() {
return 0
}
# called by dracut
install() {
inst_script "$moddir/fc_transport_scan_lun.sh" /usr/lib/udev/fc_transport_scan_lun.sh
inst_script "$moddir/sas_transport_scan_lun.sh" /usr/lib/udev/sas_transport_scan_lun.sh
inst_hook cmdline 30 "$moddir/parse-lunmask.sh"
if [[ $hostonly_cmdline == "yes" ]]; then
local _lunmask
for _lunmask in $(cmdline); do
printf "%s\n" "$_lunmask" >> "${initdir}/etc/cmdline.d/95lunmask.conf"
done
fi
}
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