Refactored 42_grml and support lvm devices [Closes: issue971].

[grml-rescueboot.git] / 42_grml

diff --git a/42_grml b/42_grml
index 2a425c4..68ba01d 100755 (executable)
--- a/42_grml
+++ b/42_grml
@@ -1,36 +1,60 @@
-#! /bin/sh -e
+#!/bin/sh
 # Filename:      42_grml
 # Purpose:       grub-mkconfig helper script for Grml rescue systems
 # Authors:       grml-team (grml.org), (c) Andreas Gredler <jimmy@grml.org>, Michael Prokop <mika@grml.org>
 # Bug-Reports:   see http://grml.org/bugs/
-# License:       This file is licensed under the GPL v2.
+# License:       This file is licensed under the GPL v2+.
 ################################################################################
 
+set -e
+
 prefix=/usr
 exec_prefix=${prefix}
 bindir=${exec_prefix}/bin
 libdir=${exec_prefix}/lib
 . ${libdir}/grub/grub-mkconfig_lib
 
-list=$(for i in /boot/grml/*.iso ; do
-        if grub_file_is_not_garbage "$i" ; then echo -n "$i " ; fi
-      done)
+# default unless configured otherwise:
+ISO_LOCATION="/boot/grml"
+
+if [ -r /etc/default/grml-rescueboot ] ; then
+  . /etc/default/grml-rescueboot
+fi
+
+iso_list=""
+for file in "${ISO_LOCATION}"/*.iso ; do
+     if grub_file_is_not_garbage "$file" ; then
+       iso_list="$iso_list $file "
+     fi
+done
 
-for grmliso in $list ; do
+for grmliso in $iso_list ; do
   rel_dirname="$(make_system_path_relative_to_its_root $(dirname $grmliso))"
   grml="$(basename $grmliso)"
+  device="$(${grub_probe} -t device ${grmliso})"
+
+  additional_param=""
+
+  case "$device" in
+      *mapper* )
+      additional_param="live-media=$device"
+      ;;
+  esac
 
   echo "Found Grml ISO image: $grmliso" >&2
   title="Grml Rescue System ($grml)"
 
   cat << EOF
-    menuentry "${title}" {
-    iso_path=${rel_dirname}/$grml
-    export iso_path
-    loopback loop \$iso_path
-    set root=(loop)
-    configfile /boot/grub/loopback.cfg
-    }
+menuentry "${title}" {
+$(prepare_grub_to_access_device "$device" | sed -e "s/^/        /")
+        iso_path="${rel_dirname}/${grml}"
+        export iso_path
+        kernelopts="$CUSTOM_BOOTOPTIONS $additional_param"
+        export kernelopts
+        loopback loop "${rel_dirname}/$grml"
+        set root=(loop)
+        configfile /boot/grub/loopback.cfg
+}
 EOF
 done