more forwardporting \o/

[live-boot-grml.git] / debian / patches / 42_restore_support_for_old_persistence.patch

diff --git a/debian/patches/42_restore_support_for_old_persistence.patch b/debian/patches/42_restore_support_for_old_persistence.patch
new file mode 100644 (file)
index 0000000..7f86dd2
--- /dev/null
+++ b/debian/patches/42_restore_support_for_old_persistence.patch
@@ -0,0 +1,96 @@
+From: Evgeni Golov <evgeni@debian.org>
+Subject: restore support for old persistence media
+
+diff --git a/scripts/boot/9990-aaa-fixme.sh b/scripts/boot/9990-aaa-fixme.sh
+index 416d6b4..74517e8 100755
+--- a/scripts/boot/9990-aaa-fixme.sh
++++ b/scripts/boot/9990-aaa-fixme.sh
+@@ -40,7 +40,10 @@ else
+       udevinfo='udevinfo'
+ fi
+ 
++old_root_overlay_label="live-rw"
++old_home_overlay_label="home-rw"
+ custom_overlay_label="persistence"
++old_custom_overlay_label="custom-ov"
+ persistence_list="persistence.conf"
+ old_persistence_list="live-persistence.conf"
+ 
+diff --git a/scripts/boot/9990-misc-helpers.sh b/scripts/boot/9990-misc-helpers.sh
+index 5c5341c..addc82a 100755
+--- a/scripts/boot/9990-misc-helpers.sh
++++ b/scripts/boot/9990-misc-helpers.sh
+@@ -1553,6 +1553,32 @@ activate_custom_mounts ()
+       echo ${used_devices}
+ }
+ 
++fix_backwards_compatibility ()
++{
++      local device dir opt backing include_list
++      device=${1}
++      dir=${2}
++      opt=${3}
++
++      if [ -n "${PERSISTENCE_READONLY}" ]
++      then
++              return
++      fi
++
++      backing="$(mount_persistence_media ${device})"
++      if [ -z "${backing}" ]
++      then
++              return
++      fi
++
++      include_list="${backing}/${persistence_list}"
++      if [ ! -r "${include_list}" ] && [ ! -r "${backing}/${old_persistence_list}" ]
++      then
++              echo "# persistence backwards compatibility:
++${dir} ${opt},source=." > "${include_list}"
++      fi
++}
++
+ is_mountpoint ()
+ {
+       directory="$1"
+diff --git a/scripts/boot/9990-overlay.sh b/scripts/boot/9990-overlay.sh
+index c6de171..4a080bc 100755
+--- a/scripts/boot/9990-overlay.sh
++++ b/scripts/boot/9990-overlay.sh
+@@ -210,7 +210,7 @@ setup_unionfs ()
+ 
+               if is_in_comma_sep_list overlay ${PERSISTENCE_METHOD}
+               then
+-                      overlays="${custom_overlay_label}"
++                      overlays="${old_root_overlay_label} ${old_home_overlay_label} ${custom_overlay_label} ${old_custom_overlay_label}"
+               fi
+ 
+               local overlay_devices
+@@ -222,10 +222,27 @@ setup_unionfs ()
+                               media="$(echo ${media} | tr ":" " ")"
+ 
+                               case ${media} in
++                                      ${old_root_overlay_label}=*)
++                                              device="${media#*=}"
++                                              fix_backwards_compatibility ${device} / union
++                                              overlay_devices="${overlay_devices} ${device}"
++                                              ;;
++
++                                      ${old_home_overlay_label}=*)
++                                              device="${media#*=}"
++                                              fix_backwards_compatibility ${device} /home bind
++                                              overlay_devices="${overlay_devices} ${device}"
++                                              ;;
++
+                                       ${custom_overlay_label}=*)
+                                               device="${media#*=}"
+                                               overlay_devices="${overlay_devices} ${device}"
+                                               ;;
++
++                                      ${old_custom_overlay_label}=*)
++                                              device="${media#*=}"
++                                              overlay_devices="${overlay_devices} ${device}"
++                                              ;;
+                                esac
+                       done
+               fi