Supress warnings when probing media for persistence.
[live-boot-grml.git] / scripts / live
index 46407c1..af8c12e 100755 (executable)
@@ -952,7 +952,11 @@ setup_unionfs ()
                log_end_msg
        fi
 
-       mkdir -p /overlay
+       # tmpfs file systems
+       touch /etc/fstab
+       mkdir -p /live
+       mount -t tmpfs tmpfs /live
+       mkdir -p /live/overlay
 
        # Looking for persistence devices or files
        if [ -n "${PERSISTENCE}" ] && [ -z "${NOPERSISTENCE}" ]
@@ -999,7 +1003,7 @@ setup_unionfs ()
 
                if echo ${PERSISTENCE_METHOD} | grep -qe "\<overlay\>"
                then
-                       overlays="${root_overlay_label} ${old_root_overlay_label} ${old_home_overlay_label} ${custom_overlay_label}"
+                       overlays="${old_root_overlay_label} ${old_home_overlay_label} ${custom_overlay_label}"
                fi
 
                if echo ${PERSISTENCE_METHOD} | grep -qe "\<snapshot\>"
@@ -1009,7 +1013,6 @@ setup_unionfs ()
 
                local root_snapdata=""
                local home_snapshot_label=""
-               local root_overlay_label=""
                local overlay_devices=""
                for media in $(find_persistence_media "${overlays}" "${snapshots}" "${whitelistdev}")
                do
@@ -1030,16 +1033,14 @@ setup_unionfs ()
                                                home_snapdata="${media#*=}"
                                        fi
                                        ;;
-                               ${root_overlay_label}=*|${old_root_overlay_label}=*)
-                                       if [ -z "${root_overlay_device}" ]
-                                       then
-                                               device="${media#*=}"
-                                               root_overlay_device="${device}"
-                                       fi
+                               ${old_root_overlay_label}=*)
+                                       device="${media#*=}"
+                                       fix_backwards_compatibility ${device} / union
+                                       overlay_devices="${overlay_devices} ${device}"
                                        ;;
                                ${old_home_overlay_label}=*)
                                        device="${media#*=}"
-                                       fix_home_rw_compatibility ${device}
+                                       fix_backwards_compatibility ${device} /home bind
                                        overlay_devices="${overlay_devices} ${device}"
                                        ;;
                                ${custom_overlay_label}=*)
@@ -1048,26 +1049,6 @@ setup_unionfs ()
                                        ;;
                         esac
                done
-
-               if [ -b "${root_overlay_device}" ]
-               then
-                       PERSISTENCE_IS_ON="1"
-                       export PERSISTENCE_IS_ON
-
-                       cowdevice=${root_overlay_device}
-                       cow_fstype=$(get_fstype "${root_overlay_device}")
-                       if [ -z "${PERSISTENCE_READONLY}" ]
-                       then
-                               cow_mountopt="rw,noatime"
-                       else
-                               cow_mountopt="ro,noatime"
-                       fi
-
-                       if [ "${FORCEPERSISTENCEFSCK}" = "Yes" ]
-                       then
-                               fsck -y ${cowdevice}
-                       fi
-               fi
        elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENCE}" ]
        then
                # check if there are any nfs options
@@ -1104,13 +1085,13 @@ setup_unionfs ()
 
        if [ "${UNIONTYPE}" != "unionmount" ]
        then
-               if [ -n "${PERSISTENCE_READONLY}" ]
+               if [ -n "${PERSISTENCE_READONLY}" ] && [ "${cowdevice}" != "tmpfs" ]
                then
-                       mount -t tmpfs -o rw,noatime,mode=755 tmpfs "/overlay"
-                       root_backing="${rootmnt}/live/persistence/$(basename ${cowdevice})-root"
+                       mount -t tmpfs -o rw,noatime,mode=755 tmpfs "/live/overlay"
+                       root_backing="/live/persistence/$(basename ${cowdevice})-root"
                        mkdir -p ${root_backing}
                else
-                       root_backing="/overlay"
+                       root_backing="/live/overlay"
                fi
 
                if [ "${cow_fstype}" = "nfs" ]
@@ -1164,12 +1145,11 @@ setup_unionfs ()
                        unionmountopts="-t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice}"
                        mount_full $unionmountopts "${unionmountpoint}"
                else
-                       cow_dir="/overlay${dir}"
+                       cow_dir="/live/overlay${dir}"
                        rofs_dir="${rofs}${dir}"
                        mkdir -p ${cow_dir}
                        if [ -n "${PERSISTENCE_READONLY}" ] && [ "${cowdevice}" != "tmpfs" ]
                        then
-                               #mount -t tmpfs -o rw,noatime,mode=755 tmpfs "${cow_dir}"
                                do_union ${unionmountpoint} ${cow_dir} ${root_backing} ${rofs_dir}
                        else
                                do_union ${unionmountpoint} ${cow_dir} ${rofs_dir}
@@ -1180,11 +1160,6 @@ setup_unionfs ()
        # Correct the permissions of /:
        chmod 0755 "${rootmnt}"
 
-       # tmpfs file systems
-       touch /etc/fstab
-       mkdir -p "${rootmnt}/live"
-       mount -t tmpfs tmpfs ${rootmnt}/live
-
        live_rofs_list=""
        # SHOWMOUNTS is necessary for custom mounts with the union option
        # Since we may want to do custom mounts in user-space it's best to always enable SHOWMOUNTS
@@ -1193,7 +1168,7 @@ setup_unionfs ()
                # XXX: is the for loop really necessary? rofslist can only contain one item (see above XXX about EXPOSEDROOT) and this is also assumed elsewhere above (see use of $rofs above).
                for d in ${rofslist}
                do
-                       live_rofs="${rootmnt}/live/rofs/${d##*/}"
+                       live_rofs="/live/rofs/${d##*/}"
                        live_rofs_list="${live_rofs_list} ${live_rofs}"
                        mkdir -p "${live_rofs}"
                        case d in
@@ -1223,7 +1198,7 @@ setup_unionfs ()
                # Gather information about custom mounts from devies detected as overlays
                get_custom_mounts ${custom_mounts} ${overlay_devices}
 
-               [ -n "${DEBUG}" ] && cp ${custom_mounts} "${rootmnt}/live/persistence"
+               [ -n "${DEBUG}" ] && cp ${custom_mounts} "/live/persistence"
 
                # Now we do the actual mounting (and symlinking)
                local used_overlays=""
@@ -1245,9 +1220,13 @@ setup_unionfs ()
                try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home"
        fi
 
+       mkdir -p "${rootmnt}/live"
+       mount -o move /live "${rootmnt}/live" >/dev/null 2>&1 || mount -o bind /live "${rootmnt}/live" || log_warning_msg "Unable to move or bind /live to ${rootmnt}/live"
+
        # shows cow fs on /overlay for use by live-snapshot
        mkdir -p "${rootmnt}/live/overlay"
-       mount -o move /overlay "${rootmnt}/live/overlay" >/dev/null 2>&1 || mount -o bind /overlay "${rootmnt}/live/overlay" || log_warning_msg "Unable to move or bind /overlay to ${rootmnt}/live/overlay"
+       mount -o move /live/overlay "${rootmnt}/live/overlay" >/dev/null 2>&1 || mount -o bind /overlay "${rootmnt}/live/overlay" || log_warning_msg "Unable to move or bind /overlay to ${rootmnt}/live/overlay"
+
 }
 
 check_dev ()
@@ -1355,6 +1334,21 @@ check_dev ()
                mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
                [ -n "$devuid" ] && echo "$devuid" >> $tried
 
+               if [ -n "${FINDISO}" ]
+               then
+                       if [ -f ${mountpoint}/${FINDISO} ]
+                       then
+                               umount ${mountpoint}
+                               mkdir -p /live/findiso
+                               mount -t ${fstype} -o ro,noatime "${devname}" /live/findiso
+                               loopdevname=$(setup_loop "/live/findiso/${FINDISO}" "loop" "/sys/block/loop*" 0 "")
+                               devname="${loopdevname}"
+                               mount -t iso9660 -o ro,noatime "${devname}" ${mountpoint}
+                       else
+                               umount ${mountpoint}
+                       fi
+               fi
+
                if is_live_path ${mountpoint} && \
                        ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
                then
@@ -1641,6 +1635,28 @@ mountroot ()
        # when booting FAI, this simple workaround solves it
        ls /root/* >/dev/null 2>&1
 
+       # Move findiso directory to the new root filesystem so that programs there can get at it.
+       if [ -d /live/findiso ] && [ ! -d /root/live/findiso ]
+       then
+               mkdir -p /root/live/findiso
+               mount -n --move /live/findiso /root/live/findiso
+       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 "$FINDISO" ] && [ "${TORAM}" ]
+       then
+               losetup -d /dev/loop0
+
+               if is_mountpoint /live/findiso
+               then
+                       umount /root/live/findiso
+                       rmdir --ignore-fail-on-non-empty /root/live/findiso \
+                               >/dev/null 2>&1 || true
+               fi
+       fi
+
        # copy snapshot configuration if exists
        if [ -f snapshot.conf ]
        then