#!/bin/sh

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#

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# Preferred format:

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# root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>

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# [root=*] netroot=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>

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#

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# Legacy formats:

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# [net]root=[iscsi] iscsiroot=[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>

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# [net]root=[iscsi] iscsi_firmware

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#

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# root= takes precedence over netroot= if root=iscsi[...]

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#

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# This script is sourced, so root should be set. But let's be paranoid

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[ -z "$root" ] && root=$(getarg root=)

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if [ -z "$netroot" ]; then

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for nroot in $(getargs netroot=); do

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[ "${nroot%%:*}" = "iscsi" ] && break

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done

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if [ "${nroot%%:*}" = "iscsi" ]; then

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netroot="$nroot"

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else

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for nroot in $(getargs netroot=); do

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[ "${nroot%%:*}" = "dhcp" ] && break

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done

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netroot="$nroot"

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fi

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fi

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[ -z "$iscsiroot" ] && iscsiroot=$(getarg iscsiroot=)

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[ -z "$iscsi_firmware" ] && getargbool 0 rd.iscsi.firmware -y iscsi_firmware && iscsi_firmware="1"

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[ -n "$iscsiroot" ] && [ -n "$iscsi_firmware" ] && die "Mixing iscsiroot and iscsi_firmware is dangerous"

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type write_fs_tab >/dev/null 2>&1 || . /lib/fs-lib.sh

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# Root takes precedence over netroot

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if [ "${root%%:*}" = "iscsi" ] ; then

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if [ -n "$netroot" ] ; then

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echo "Warning: root takes precedence over netroot. Ignoring netroot"

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fi

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netroot=$root

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# if root is not specified try to mount the whole iSCSI LUN

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printf 'ENV{DEVTYPE}!="partition", SYMLINK=="disk/by-path/*-iscsi-*-*", SYMLINK+="root"\n' >> /etc/udev/rules.d/99-iscsi-root.rules

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[ -n "$DRACUT_SYSTEMD" ] && systemctl is-active systemd-udevd && udevadm control --reload-rules

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root=/dev/root

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write_fs_tab /dev/root

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fi

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# If it's not empty or iscsi we don't continue

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for nroot in $(getargs netroot); do

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[ "${nroot%%:*}" = "iscsi" ] || continue

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netroot="$nroot"

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break

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done

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# Root takes precedence over netroot

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if [ "${root}" = "/dev/root" ] && getarg "netroot=dhcp" ; then

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# if root is not specified try to mount the whole iSCSI LUN

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printf 'ENV{DEVTYPE}!="partition", SYMLINK=="disk/by-path/*-iscsi-*-*", SYMLINK+="root"\n' >> /etc/udev/rules.d/99-iscsi-root.rules

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[ -n "$DRACUT_SYSTEMD" ] && systemctl is-active systemd-udevd && udevadm control --reload-rules

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fi

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if [ -n "$iscsiroot" ] ; then

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[ -z "$netroot" ] && netroot=$root

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# @deprecated

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echo "Warning: Argument iscsiroot is deprecated and might be removed in a future"

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echo "release. See 'man dracut.kernel' for more information."

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# Accept iscsiroot argument?

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[ -z "$netroot" ] || [ "$netroot" = "iscsi" ] || \

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die "Argument iscsiroot only accepted for empty root= or [net]root=iscsi"

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# Override root with iscsiroot content?

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[ -z "$netroot" ] || [ "$netroot" = "iscsi" ] && netroot=iscsi:$iscsiroot

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fi

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# iscsi_firmware does not need argument checking

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if [ -n "$iscsi_firmware" ]; then

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if [ "$root" != "dhcp" ] && [ "$netroot" != "dhcp" ]; then

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[ -z "$netroot" ] && netroot=iscsi:

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fi

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modprobe -b -q iscsi_boot_sysfs 2>/dev/null

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modprobe -b -q iscsi_ibft

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# if no ip= is given, but firmware

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echo "${DRACUT_SYSTEMD+systemctl is-active initrd-root-device.target || }[ -f '/tmp/iscsistarted-firmware' ]" > $hookdir/initqueue/finished/iscsi_started.sh

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initqueue --unique --online /sbin/iscsiroot online "iscsi:" "$NEWROOT"

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initqueue --unique --onetime --timeout /sbin/iscsiroot timeout "iscsi:" "$NEWROOT"

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initqueue --unique --onetime --settled /sbin/iscsiroot online "iscsi:" "'$NEWROOT'"

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fi

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# ISCSI actually supported?

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if ! [ -e /sys/module/iscsi_tcp ]; then

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modprobe -b -q iscsi_tcp || die "iscsiroot requested but kernel/initrd does not support iscsi"

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fi

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modprobe --all -b -q qla4xxx cxgb3i cxgb4i bnx2i be2iscsi

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if [ -n "$netroot" ] && [ "$root" != "/dev/root" ] && [ "$root" != "dhcp" ]; then

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if ! getargbool 1 rd.neednet >/dev/null || ! getarg "ip="; then

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initqueue --unique --onetime --settled /sbin/iscsiroot dummy "'$netroot'" "'$NEWROOT'"

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fi

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fi

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if arg=$(getarg rd.iscsi.initiator -d iscsi_initiator=) && [ -n "$arg" ] && ! [ -f /run/initiatorname.iscsi ] ; then

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iscsi_initiator=$arg

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echo "InitiatorName=$iscsi_initiator" > /run/initiatorname.iscsi

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ln -fs /run/initiatorname.iscsi /dev/.initiatorname.iscsi

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rm -f /etc/iscsi/initiatorname.iscsi

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mkdir -p /etc/iscsi

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ln -fs /run/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi

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if [ -n "$DRACUT_SYSTEMD" ]; then

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systemctl try-restart iscsid

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# FIXME: iscsid is not yet ready, when the service is :-/

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sleep 1

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fi

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fi

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# If not given on the cmdline and initiator-name available via iBFT

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if [ -z $iscsi_initiator ] && [ -f /sys/firmware/ibft/initiator/initiator-name ] && ! [ -f /tmp/iscsi_set_initiator ]; then

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iscsi_initiator=$(while read line || [ -n "$line" ]; do echo $line;done < /sys/firmware/ibft/initiator/initiator-name)

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if [ -n "$iscsi_initiator" ]; then

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echo "InitiatorName=$iscsi_initiator" > /run/initiatorname.iscsi

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rm -f /etc/iscsi/initiatorname.iscsi

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mkdir -p /etc/iscsi

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ln -fs /run/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi

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> /tmp/iscsi_set_initiator

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if [ -n "$DRACUT_SYSTEMD" ]; then

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systemctl try-restart iscsid

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# FIXME: iscsid is not yet ready, when the service is :-/

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sleep 1

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fi

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fi

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fi

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if [ -z "$netroot" ] || ! [ "${netroot%%:*}" = "iscsi" ]; then

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return 1

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fi

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initqueue --unique --onetime --timeout /sbin/iscsiroot timeout "$netroot" "$NEWROOT"

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for nroot in $(getargs netroot); do

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[ "${nroot%%:*}" = "iscsi" ] || continue

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type parse_iscsi_root >/dev/null 2>&1 || . /lib/net-lib.sh

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parse_iscsi_root "$nroot" || return 1

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netroot_enc=$(str_replace "$nroot" '/' '\2f')

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echo "${DRACUT_SYSTEMD+systemctl is-active initrd-root-device.target || }[ -f '/tmp/iscsistarted-$netroot_enc' ]" > $hookdir/initqueue/finished/iscsi_started.sh

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done

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# Done, all good!

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rootok=1

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# Shut up init error check

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[ -z "$root" ] && root="iscsi"

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