Adding support for isofrom/fromiso bootoption.

diff --git a/scripts/live b/scripts/live
index 0fa3900..fa76eb1 100755 (executable)
--- a/scripts/live
+++ b/scripts/live
@@ -97,6 +97,11 @@ Arguments ()
                                export HOSTNAME LIVECONF
                                ;;
 
+                       isofrom=*|fromiso=*)
+                               FROMISO="${ARGUMENT#*=}"
+                               export FROMISO
+                               ;;
+
                        username=*)
                                USERNAME="${ARGUMENT#username=}"
                                LIVECONF="changed"
@@ -1384,6 +1389,17 @@ check_dev ()
        devname="${2}"
        skip_uuid_check="${3}"
 
+       # support for fromiso=.../isofrom=....
+       if [ -n "$FROMISO" ]
+       then
+               mkdir /isofrom
+               ISO_DEVICE="$(echo $FROMISO | sed 's|\(/dev/[a-z]*[0-9]*\).*|\1|')"
+               mount "$ISO_DEVICE" /isofrom
+               ISO_NAME="$(echo $FROMISO | sed 's|/dev/[a-z]*[0-9]*/||')"
+               loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
+               devname="${loopdevname}"
+       fi
+
        if [ -z "${devname}" ]
        then
                devname=$(sys2dev "${sysdev}")
@@ -1655,6 +1671,15 @@ mountroot ()
                log_end_msg
        fi
 
+       # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
+       # because the mountpoint is left behind in /proc/mounts, so let's get
+       # rid of it when running from RAM
+       if [ -n "$FROMISO" ] && [ "${TORAM}" ]
+       then
+         losetup -d /dev/loop0
+         grep -q /isofrom /proc/mounts && umount /isofrom
+       fi
+
        if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
        then
                setup_unionfs "${livefs_root}" "${rootmnt}"