From 9cb1c4df7b9ce1a9ad1312621b0f2b16a94fba3a Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 3 Jun 2024 15:54:25 +0200
Subject: Adding upstream version 060+5.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 modules.d/95iscsi/module-setup.sh | 294 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 294 insertions(+)
 create mode 100755 modules.d/95iscsi/module-setup.sh

(limited to 'modules.d/95iscsi/module-setup.sh')

diff --git a/modules.d/95iscsi/module-setup.sh b/modules.d/95iscsi/module-setup.sh
new file mode 100755
index 0000000..2bea2fc
--- /dev/null
+++ b/modules.d/95iscsi/module-setup.sh
@@ -0,0 +1,294 @@
+#!/bin/bash
+
+# called by dracut
+check() {
+    # If our prerequisites are not met, fail anyways.
+    require_binaries iscsi-iname iscsiadm iscsid || return 1
+    require_kernel_modules iscsi_tcp || return 1
+
+    # If hostonly was requested, fail the check if we are not actually
+    # booting from root.
+    [[ $hostonly ]] || [[ $mount_needs ]] && {
+        pushd . > /dev/null
+        for_each_host_dev_and_slaves block_is_iscsi
+        local _is_iscsi=$?
+        popd > /dev/null || exit
+        [[ $_is_iscsi == 0 ]] || return 255
+    }
+    return 0
+}
+
+get_ibft_mod() {
+    local ibft_mac=$1
+    local iface_mac iface_mod
+    # Return the iSCSI offload module for a given MAC address
+    for iface_desc in $(iscsiadm -m iface | cut -f 2 -d ' '); do
+        iface_mod=${iface_desc%%,*}
+        iface_mac=${iface_desc#*,}
+        iface_mac=${iface_mac%%,*}
+        if [ "$ibft_mac" = "$iface_mac" ]; then
+            echo "$iface_mod"
+            return 0
+        fi
+    done
+}
+
+install_ibft() {
+    # When iBFT / iscsi_boot is detected:
+    # - Use 'ip=ibft' to set up iBFT network interface
+    #   Note: bnx2i is using a different MAC address of iSCSI offloading
+    #         so the 'ip=ibft' parameter must not be set
+    # - specify firmware booting cmdline parameter
+
+    for d in /sys/firmware/*; do
+        if [ -d "${d}"/ethernet0 ]; then
+            read -r ibft_mac < "${d}"/ethernet0/mac
+            ibft_mod=$(get_ibft_mod "$ibft_mac")
+        fi
+        if [ -z "$ibft_mod" ] && [ -d "${d}"/ethernet1 ]; then
+            read -r ibft_mac < "${d}"/ethernet1/mac
+            ibft_mod=$(get_ibft_mod "$ibft_mac")
+        fi
+        if [ -d "${d}"/initiator ]; then
+            if [ "${d##*/}" = "ibft" ] && [ "$ibft_mod" != "bnx2i" ]; then
+                echo -n "rd.iscsi.ibft=1 "
+            fi
+            echo -n "rd.iscsi.firmware=1 "
+        fi
+    done
+}
+
+install_iscsiroot() {
+    local devpath=$1
+    local scsi_path iscsi_lun session c d conn host flash
+    local iscsi_session iscsi_address iscsi_port iscsi_targetname
+
+    scsi_path=${devpath%%/block*}
+    [ "$scsi_path" = "$devpath" ] && return 1
+    iscsi_lun=${scsi_path##*:}
+    [ "$iscsi_lun" = "$scsi_path" ] && return 1
+    session=${devpath%%/target*}
+    [ "$session" = "$devpath" ] && return 1
+    iscsi_session=${session##*/}
+    [ "$iscsi_session" = "$session" ] && return 1
+    host=${session%%/session*}
+    [ "$host" = "$session" ] && return 1
+    iscsi_host=${host##*/}
+
+    for flash in "${host}"/flashnode_sess-*; do
+        [ -f "$flash" ] || continue
+        [ ! -e "$flash/is_boot_target" ] && continue
+        read -r is_boot < "$flash"/is_boot_target
+        if [ "$is_boot" -eq 1 ]; then
+            # qla4xxx flashnode session; skip iBFT discovery
+            read -r iscsi_initiator < /sys/class/iscsi_host/"${iscsi_host}"/initiatorname
+            echo "rd.iscsi.initiator=${iscsi_initiator}"
+            return
+        fi
+    done
+
+    for d in "${session}"/*; do
+        case $d in
+            *connection*)
+                c=${d##*/}
+                conn=${d}/iscsi_connection/${c}
+                if [ -d "${conn}" ]; then
+                    read -r iscsi_address < "${conn}"/persistent_address
+                    read -r iscsi_port < "${conn}"/persistent_port
+                fi
+                ;;
+            *session)
+                if [ -d "${d}"/"${iscsi_session}" ]; then
+                    read -r iscsi_initiator < "${d}"/"${iscsi_session}"/initiatorname
+                    read -r iscsi_targetname < "${d}"/"${iscsi_session}"/targetname
+                fi
+                ;;
+        esac
+    done
+
+    [ -z "$iscsi_address" ] && return
+    ip_params_for_remote_addr "$iscsi_address"
+
+    if [ -n "$iscsi_address" -a -n "$iscsi_targetname" ]; then
+        if [ -n "$iscsi_port" -a "$iscsi_port" -eq 3260 ]; then
+            iscsi_port=
+        fi
+        if [ -n "$iscsi_lun" -a "$iscsi_lun" -eq 0 ]; then
+            iscsi_lun=
+        fi
+        # In IPv6 case rd.iscsi.initatior= must pass address in [] brackets
+        case "$iscsi_address" in
+            *:*)
+                iscsi_address="[$iscsi_address]"
+                ;;
+        esac
+        # Must be two separate lines, so that "sort | uniq" commands later
+        # can sort out rd.iscsi.initiator= duplicates
+        echo "rd.iscsi.initiator=${iscsi_initiator}"
+        echo "netroot=iscsi:${iscsi_address}::${iscsi_port}:${iscsi_lun}:${iscsi_targetname}"
+        echo "rd.neednet=1"
+    fi
+    return 0
+}
+
+install_softiscsi() {
+    [ -d /sys/firmware/ibft ] && return 0
+
+    is_softiscsi() {
+        local _dev=$1
+        local iscsi_dev
+
+        [[ -L "/sys/dev/block/$_dev" ]] || return
+        iscsi_dev=$(
+            cd -P /sys/dev/block/"$_dev" || exit
+            echo "$PWD"
+        )
+        install_iscsiroot "$iscsi_dev"
+    }
+
+    for_each_host_dev_and_slaves_all is_softiscsi || return 255
+    return 0
+}
+
+# called by dracut
+depends() {
+    echo network rootfs-block
+}
+
+# called by dracut
+installkernel() {
+    local _arch=${DRACUT_ARCH:-$(uname -m)}
+    local _funcs='iscsi_register_transport'
+
+    instmods bnx2i qla4xxx cxgb3i cxgb4i be2iscsi qedi
+    hostonly="" instmods iscsi_tcp iscsi_ibft crc32c iscsi_boot_sysfs 8021q
+
+    if [ "$_arch" = "s390" -o "$_arch" = "s390x" ]; then
+        _s390drivers="=drivers/s390/scsi"
+    fi
+
+    dracut_instmods -o -s ${_funcs} =drivers/scsi ${_s390drivers:+"$_s390drivers"}
+}
+
+# called by dracut
+cmdline() {
+    local _iscsiconf
+    _iscsiconf=$(install_ibft)
+    {
+        if [ "$_iscsiconf" ]; then
+            echo "${_iscsiconf}"
+        else
+            install_softiscsi
+        fi
+    } | sort | uniq
+}
+
+# called by dracut
+install() {
+    inst_multiple -o iscsiuio
+    inst_libdir_file 'libgcc_s.so*'
+    inst_multiple umount iscsi-iname iscsiadm iscsid
+    inst_binary sort
+
+    inst_multiple -o \
+        "$systemdsystemunitdir"/iscsid.socket \
+        "$systemdsystemunitdir"/iscsid.service \
+        "$systemdsystemunitdir"/iscsiuio.service \
+        "$systemdsystemunitdir"/iscsiuio.socket \
+        "$systemdsystemunitdir"/sockets.target.wants/iscsid.socket \
+        "$systemdsystemunitdir"/sockets.target.wants/iscsiuio.socket
+
+    if [[ $hostonly ]]; then
+        local -a _filenames
+
+        inst_dir /etc/iscsi
+        mapfile -t -d '' _filenames < <(find /etc/iscsi -type f -print0)
+        inst_multiple "${_filenames[@]}"
+    else
+        inst_simple /etc/iscsi/iscsid.conf
+    fi
+
+    # Detect iBFT and perform mandatory steps
+    if [[ $hostonly_cmdline == "yes" ]]; then
+        local _iscsiconf
+        _iscsiconf=$(cmdline)
+        [[ $_iscsiconf ]] && printf "%s\n" "$_iscsiconf" >> "${initdir}/etc/cmdline.d/95iscsi.conf"
+    fi
+
+    inst_hook cmdline 90 "$moddir/parse-iscsiroot.sh"
+    inst_hook cleanup 90 "$moddir/cleanup-iscsi.sh"
+    inst "$moddir/iscsiroot.sh" "/sbin/iscsiroot"
+
+    if ! dracut_module_included "systemd"; then
+        inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
+    else
+        inst_multiple -o \
+            "$systemdsystemunitdir"/iscsi.service \
+            "$systemdsystemunitdir"/iscsi-init.service \
+            "$systemdsystemunitdir"/iscsid.service \
+            "$systemdsystemunitdir"/iscsid.socket \
+            "$systemdsystemunitdir"/iscsiuio.service \
+            "$systemdsystemunitdir"/iscsiuio.socket \
+            iscsiadm iscsid
+
+        for i in \
+            iscsid.socket \
+            iscsiuio.socket; do
+            $SYSTEMCTL -q --root "$initdir" enable "$i"
+        done
+
+        mkdir -p "${initdir}/$systemdsystemunitdir/iscsid.service.d"
+        {
+            echo "[Unit]"
+            echo "DefaultDependencies=no"
+            echo "Conflicts=shutdown.target"
+            echo "Before=shutdown.target"
+        } > "${initdir}/$systemdsystemunitdir/iscsid.service.d/dracut.conf"
+
+        mkdir -p "${initdir}/$systemdsystemunitdir/iscsid.socket.d"
+        {
+            echo "[Unit]"
+            echo "DefaultDependencies=no"
+            echo "Conflicts=shutdown.target"
+            echo "Before=shutdown.target sockets.target"
+        } > "${initdir}/$systemdsystemunitdir/iscsid.socket.d/dracut.conf"
+
+        mkdir -p "${initdir}/$systemdsystemunitdir/iscsiuio.service.d"
+        {
+            echo "[Unit]"
+            echo "DefaultDependencies=no"
+            echo "Conflicts=shutdown.target"
+            echo "Before=shutdown.target"
+        } > "${initdir}/$systemdsystemunitdir/iscsiuio.service.d/dracut.conf"
+
+        mkdir -p "${initdir}/$systemdsystemunitdir/iscsiuio.socket.d"
+        {
+            echo "[Unit]"
+            echo "DefaultDependencies=no"
+            echo "Conflicts=shutdown.target"
+            echo "Before=shutdown.target sockets.target"
+        } > "${initdir}/$systemdsystemunitdir/iscsiuio.socket.d/dracut.conf"
+
+        # Fedora 34 iscsid requires iscsi-shutdown.service
+        # which would terminate all iSCSI connections on switch root
+        cat > "${initdir}/$systemdsystemunitdir/iscsi-shutdown.service" << EOF
+[Unit]
+Description=Dummy iscsi-shutdown.service for the initrd
+Documentation=man:iscsid(8) man:iscsiadm(8)
+DefaultDependencies=no
+Conflicts=shutdown.target
+After=systemd-remount-fs.service network.target iscsid.service iscsiuio.service
+Before=remote-fs-pre.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=false
+ExecStart=-/usr/bin/true
+EOF
+    fi
+    inst_dir /var/lib/iscsi
+    mkdir -p "${initdir}/var/lib/iscsi/nodes"
+    # Fedora 34 iscsid wants a non-empty /var/lib/iscsi/nodes directory
+    : > "${initdir}/var/lib/iscsi/nodes/.dracut"
+    dracut_need_initqueue
+}
-- 
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