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#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
#
# Preferred format:
# root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
# [root=*] netroot=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
#
# Legacy formats:
# [net]root=[iscsi] iscsiroot=[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
# [net]root=[iscsi] iscsi_firmware
#
# root= takes precedence over netroot= if root=iscsi[...]
#
# Don't continue if root is ok
[ -n "$rootok" ] && return
# This script is sourced, so root should be set. But let's be paranoid
[ -z "$root" ] && root=$(getarg root=)
[ -z "$netroot" ] && netroot=$(getarg netroot=)
[ -z "$iscsiroot" ] && iscsiroot=$(getarg iscsiroot=)
[ -z "$iscsi_firmware" ] && getargbool 0 rd.iscsi.firmware -y iscsi_firmware && iscsi_firmware="1"
[ -n "$iscsiroot" ] && [ -n "$iscsi_firmware" ] && die "Mixing iscsiroot and iscsi_firmware is dangerous"
# Root takes precedence over netroot
if [ "${root%%:*}" = "iscsi" ] ; then
if [ -n "$netroot" ] ; then
echo "Warning: root takes precedence over netroot. Ignoring netroot"
fi
netroot=$root
fi
# If it's not empty or iscsi we don't continue
[ -z "$netroot" ] || [ "${netroot%%:*}" = "iscsi" ] || return
if [ -n "$iscsiroot" ] ; then
[ -z "$netroot" ] && netroot=$root
# @deprecated
echo "Warning: Argument isciroot is deprecated and might be removed in a future"
echo "release. See http://apps.sourceforge.net/trac/dracut/wiki/commandline for"
echo "more information."
# Accept iscsiroot argument?
[ -z "$netroot" ] || [ "$netroot" = "iscsi" ] || \
die "Argument iscsiroot only accepted for empty root= or [net]root=iscsi"
# Override root with iscsiroot content?
[ -z "$netroot" ] || [ "$netroot" = "iscsi" ] && netroot=iscsi:$iscsiroot
fi
# iscsi_firmware does not need argument checking
if [ -n "$iscsi_firmware" ] ; then
netroot=${netroot:-iscsi}
modprobe iscsi_ibft
fi
# If it's not iscsi we don't continue
[ "${netroot%%:*}" = "iscsi" ] || return
# Check required arguments. there's only one, but it's at the end
if [ -z "$iscsi_firmware" ] ; then
case "${netroot##iscsi:*:*:*:*:}" in
$netroot|'') die "Argument targetname for iscsiroot is missing";;
esac
fi
# ISCSI actually supported?
[ -e /sys/devices/virtual/iscsi_transport ] || modprobe iscsi_tcp || die "iscsiroot requested but kernel/initrd does not support iscsi"
# Done, all good!
rootok=1
# Shut up init error check
[ -z "$root" ] && root="iscsi"
echo '[ -e /dev/root ]' > /initqueue-finished/iscsi.sh
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