3 files changed, 157 insertions, 0 deletions
diff --git a/modules.d/91zipl/install_zipl_cmdline.sh b/modules.d/91zipl/install_zipl_cmdline.sh
new file mode 100755
index 0000000..9332d31
--- /dev/null
+++ b/modules.d/91zipl/install_zipl_cmdline.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+DEV="$1"
+MNT=/boot/zipl
+
+if [ -z "$DEV" ]; then
+    echo "No IPL device given"
+    : > /tmp/install.zipl.cmdline-done
+    exit 1
+fi
+
+[ -d ${MNT} ] || mkdir -p ${MNT}
+
+if ! mount -o ro "${DEV}" ${MNT}; then
+    echo "Failed to mount ${MNT}"
+    : > /tmp/install.zipl.cmdline-done
+    exit 1
+fi
+
+if [ -f ${MNT}/dracut-cmdline.conf ]; then
+    cp ${MNT}/dracut-cmdline.conf /etc/cmdline.d/99zipl.conf
+fi
+
+if [ -f ${MNT}/active_devices.txt ]; then
+    while read -r dev _ || [[ $dev ]]; do
+        [ "$dev" = "#" -o "$dev" = "" ] && continue
+        cio_ignore -r "$dev"
+    done < ${MNT}/active_devices.txt
+fi
+
+umount ${MNT}
+
+if [ -f /etc/cmdline.d/99zipl.conf ]; then
+    systemctl restart dracut-cmdline.service
+    systemctl restart systemd-udev-trigger.service
+fi
+: > /tmp/install.zipl.cmdline-done
+
+exit 0
diff --git a/modules.d/91zipl/module-setup.sh b/modules.d/91zipl/module-setup.sh
new file mode 100755
index 0000000..cb21454
--- /dev/null
+++ b/modules.d/91zipl/module-setup.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+get_boot_zipl_dev() {
+    local _boot_zipl
+    _boot_zipl=$(sed -n -e '/^[[:space:]]*#/d' -e 's/\(.*\)\w*\/boot\/zipl.*/\1/p' "$dracutsysrootdir"/etc/fstab)
+    printf "%s" "$(trim "$_boot_zipl")"
+}
+
+# called by dracut
+check() {
+    local _arch=${DRACUT_ARCH:-$(uname -m)}
+    # Only for systems on s390 using indirect booting via userland grub
+    [ "$_arch" = "s390" -o "$_arch" = "s390x" ] || return 1
+    # /boot/zipl contains a first stage kernel used to launch grub in initrd
+    [ -d /boot/zipl ] || return 1
+    return 0
+}
+
+# called by dracut
+depends() {
+    return 0
+}
+
+# called by dracut
+installkernel() {
+    local _boot_zipl
+
+    _boot_zipl=$(get_boot_zipl_dev)
+    if [ -n "$_boot_zipl" ]; then
+        eval "$(blkid -s TYPE -o udev "${_boot_zipl}")"
+        if [ -n "$ID_FS_TYPE" ]; then
+            case "$ID_FS_TYPE" in
+                ext?)
+                    ID_FS_TYPE=ext4
+                    ;;
+            esac
+            instmods ${ID_FS_TYPE}
+        fi
+    fi
+}
+
+# called by dracut
+cmdline() {
+    local _boot_zipl
+
+    _boot_zipl=$(get_boot_zipl_dev)
+    if [ -n "$_boot_zipl" ]; then
+        printf "%s" " rd.zipl=${_boot_zipl}"
+    fi
+}
+
+# called by dracut
+install() {
+    inst_multiple mount umount
+
+    inst_hook cmdline 91 "$moddir/parse-zipl.sh"
+    inst_script "${moddir}/install_zipl_cmdline.sh" /sbin/install_zipl_cmdline.sh
+    if [[ $hostonly_cmdline == "yes" ]]; then
+        local _zipl
+        _zipl=$(cmdline)
+
+        [[ $_zipl ]] && printf "%s\n" "$_zipl" > "${initdir}/etc/cmdline.d/91zipl.conf"
+    fi
+    dracut_need_initqueue
+}
diff --git a/modules.d/91zipl/parse-zipl.sh b/modules.d/91zipl/parse-zipl.sh
new file mode 100755
index 0000000..d95a1dd
--- /dev/null
+++ b/modules.d/91zipl/parse-zipl.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+zipl_arg=$(getarg rd.zipl)
+
+if [ -n "$zipl_arg" ]; then
+    case "$zipl_arg" in
+        LABEL=*)
+            zipl_env="ENV{ID_FS_LABEL}"
+            zipl_val=${zipl_arg#LABEL=}
+            zipl_arg="$(label_uuid_to_dev "${zipl_val}")"
+            ;;
+        UUID=*)
+            zipl_env="ENV{ID_FS_UUID}"
+            zipl_val=${zipl_arg#UUID=}
+            zipl_arg="$(label_uuid_to_dev "${zipl_val}")"
+            ;;
+        PARTLABEL=*)
+            zipl_env="ENV{ID_FS_PARTLABEL}"
+            zipl_val=${zipl_arg#PARTLABEL=}
+            zipl_arg="$(label_uuid_to_dev "${zipl_val}")"
+            ;;
+        PARTUUID=*)
+            zipl_env="ENV{ID_FS_PARTUUID}"
+            zipl_val=${zipl_arg#PARTUUID=}
+            zipl_arg="$(label_uuid_to_dev "${zipl_val}")"
+            ;;
+        /dev/mapper/*)
+            zipl_env="ENV{DM_NAME}"
+            zipl_val=${zipl_arg#/dev/mapper/}
+            ;;
+        /dev/disk/by-*)
+            zipl_env="SYMLINK"
+            zipl_val=${zipl_arg#/dev/}
+            ;;
+        /dev/*)
+            zipl_env="KERNEL"
+            zipl_val=${zipl_arg}
+            ;;
+    esac
+    if [ "$zipl_env" ]; then
+        {
+            printf 'ACTION=="add|change", SUBSYSTEM=="block", %s=="%s", ENV{SYSTEMD_READY}!="0", RUN+="/sbin/initqueue --settled --onetime --unique --name install_zipl_cmdline /sbin/install_zipl_cmdline.sh %s"\n' \
+                ${zipl_env} "${zipl_val}" "${zipl_arg}"
+            echo "[ -f /tmp/install.zipl.cmdline-done ]" > "$hookdir"/initqueue/finished/wait-zipl-conf.sh
+        } >> /etc/udev/rules.d/99zipl-conf.rules
+        cat /etc/udev/rules.d/99zipl-conf.rules
+    fi
+    wait_for_dev -n "$zipl_arg"
+fi