1 files changed, 73 insertions, 0 deletions
diff --git a/modules.d/95lunmask/module-setup.sh b/modules.d/95lunmask/module-setup.sh
new file mode 100755
index 0000000..cf6e3d7
--- /dev/null
+++ b/modules.d/95lunmask/module-setup.sh
@@ -0,0 +1,73 @@
+#!/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() {
+    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
+}