scripts/live

   1 #!/bin/sh
   2
   3 # set -e
   4
   5 export PATH="/root/usr/bin:/root/usr/sbin:/root/bin:/root/sbin:/usr/bin:/usr/sbin:/bin:/sbin"
   6
   7 echo "/root/lib" >> /etc/ld.so.conf
   8 echo "/root/usr/lib" >> /etc/ld.so.conf
   9
  10 mountpoint="/live/image"
  11 alt_mountpoint="/media"
  12 LIVE_MEDIA_PATH="live"
  13
  14 root_persistence="live-rw"
  15 home_persistence="home-rw"
  16 root_snapshot_label="live-sn"
  17 home_snapshot_label="home-sn"
  18
  19 USERNAME="user"
  20 USERFULLNAME="Live user"
  21 HOSTNAME="host"
  22
  23 mkdir -p "${mountpoint}"
  24 tried="/tmp/tried"
  25
  26 # Create /etc/mtab for debug purpose and future syncs
  27 if [ ! -d /etc ]
  28 then
  29         mkdir /etc/
  30 fi
  31
  32 if [ ! -f /etc/mtab ]
  33 then
  34         touch /etc/mtab
  35 fi
  36
  37 . /scripts/live-helpers
  38
  39 if [ ! -f /live.vars ]
  40 then
  41         touch /live.vars
  42 fi
  43
  44 Arguments ()
  45 {
  46         PRESEEDS=""
  47         LOCATIONS=""
  48
  49         for ARGUMENT in $(cat /proc/cmdline)
  50         do
  51                 case "${ARGUMENT}" in
  52                         skipconfig)
  53                                 NOACCESSIBILITY="Yes"
  54                                 NOFASTBOOT="Yes"
  55                                 NOFSTAB="Yes"
  56                                 NONETWORKING="Yes"
  57
  58                                 export NOACCESSIBILITY NOFASTBOOT NOFSTAB NONETWORKING
  59                                 ;;
  60
  61                         access=*)
  62                                 ACCESS="${ARGUMENT#access=}"
  63                                 export ACCESS
  64                                 ;;
  65
  66                         console=*)
  67                                 DEFCONSOLE="${ARGUMENT#*=}"
  68                                 export DEFCONSOLE
  69                                 ;;
  70
  71                         BOOTIF=*)
  72                                 BOOTIF="${x#BOOTIF=}"
  73                                 ;;
  74
  75                         debug)
  76                                 DEBUG="Yes"
  77                                 export DEBUG
  78
  79                                 set -x
  80                                 ;;
  81
  82                         dhcp)
  83                                 # Force dhcp even while netbooting
  84                                 # Use for debugging in case somebody works on fixing dhclient
  85                                 DHCP="Force";
  86                                 export DHCP
  87                                 ;;
  88
  89                         nodhcp)
  90                                 unset DHCP
  91                                 ;;
  92
  93                         ethdevice=*)
  94                                 DEVICE="${ARGUMENT#ethdevice=}"
  95                                 ETHDEVICE="${DEVICE}"
  96                                 export DEVICE ETHDEVICE
  97                                 ;;
  98
  99                         ethdevice-timeout=*)
 100                                 ETHDEV_TIMEOUT="${ARGUMENT#ethdevice-timeout=}"
 101                                 export ETHDEV_TIMEOUT
 102                                 ;;
 103
 104                         fetch=*)
 105                                 FETCH="${ARGUMENT#fetch=}"
 106                                 export FETCH
 107                                 ;;
 108
 109                         forcepersistentfsck)
 110                                 FORCEPERSISTENTFSCK="Yes"
 111                                 export FORCEPERSISTENTFSCK
 112                                 ;;
 113
 114                         ftpfs=*)
 115                                 FTPFS="${ARGUMENT#ftpfs=}"
 116                                 export FTPFS
 117                                 ;;
 118
 119                         httpfs=*)
 120                                 HTTPFS="${ARGUMENT#httpfs=}"
 121                                 export HTTPFS
 122                                 ;;
 123
 124                         iscsi=*)
 125                                 ISCSI="${ARGUMENT#iscsi=}"
 126                                 #ip:port - separated by ;
 127                                 ISCSI_PORTAL="${ISCSI%;*}"
 128                                 if echo "${ISCSI_PORTAL}" | grep -q , ; then
 129                                         ISCSI_SERVER="${ISCSI_PORTAL%,*}"
 130                                         ISCSI_PORT="${ISCSI_PORTAL#*,}"
 131                                 fi
 132                                 #target name
 133                                 ISCSI_TARGET="${ISCSI#*;}"
 134                                 export ISCSI ISCSI_PORTAL ISCSI_TARGET ISCSI_SERVER ISCSI_PORT
 135                                 ;;
 136
 137                         isofrom=*|fromiso=*)
 138                                 FROMISO="${ARGUMENT#*=}"
 139                                 export FROMISO
 140                                 ;;
 141
 142                         ignore_uuid)
 143                                 IGNORE_UUID="Yes"
 144                                 export IGNORE_UUID
 145                                 ;;
 146
 147                         integrity-check)
 148                                 INTEGRITY_CHECK="Yes"
 149                                 export INTEGRITY_CHECK
 150                                 ;;
 151
 152                         ip=*)
 153                                 STATICIP="${ARGUMENT#ip=}"
 154
 155                                 if [ -z "${STATICIP}" ]
 156                                 then
 157                                         STATICIP="frommedia"
 158                                 fi
 159
 160                                 export STATICIP
 161                                 ;;
 162
 163                         live-getty)
 164                                 LIVE_GETTY="1"
 165                                 export LIVE_GETTY
 166                                 ;;
 167
 168                         live-media=*|bootfrom=*)
 169                                 LIVE_MEDIA="${ARGUMENT#*=}"
 170                                 export LIVE_MEDIA
 171                                 ;;
 172
 173                         live-media-encryption=*|encryption=*)
 174                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 175                                 export LIVE_MEDIA_ENCRYPTION
 176                                 ;;
 177
 178                         live-media-offset=*)
 179                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 180                                 export LIVE_MEDIA_OFFSET
 181                                 ;;
 182
 183                         live-media-path=*)
 184                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 185                                 export LIVE_MEDIA_PATH
 186                                 ;;
 187
 188                         live-media-timeout=*)
 189                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 190                                 export LIVE_MEDIA_TIMEOUT
 191                                 ;;
 192
 193                         module=*)
 194                                 MODULE="${ARGUMENT#module=}"
 195                                 export MODULE
 196                                 ;;
 197
 198                         netboot=*)
 199                                 NETBOOT="${ARGUMENT#netboot=}"
 200                                 export NETBOOT
 201                                 ;;
 202
 203                         nfsopts=*)
 204                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 205                                 export NFSOPTS
 206                                 ;;
 207
 208                         nfscow=*)
 209                                 NFS_COW="${ARGUMENT#nfscow=}"
 210                                 export NFS_COW
 211                                 ;;
 212
 213                         noaccessibility)
 214                                 NOACCESSIBILITY="Yes"
 215                                 export NOACCESSIBILITY
 216                                 ;;
 217
 218                         nofastboot)
 219                                 NOFASTBOOT="Yes"
 220                                 export NOFASTBOOT
 221                                 ;;
 222
 223                         nofstab)
 224                                 NOFSTAB="Yes"
 225                                 export NOFSTAB
 226                                 ;;
 227
 228                         nonetworking)
 229                                 NONETWORKING="Yes"
 230                                 export NONETWORKING
 231                                 ;;
 232
 233                         ramdisk-size=*)
 234                                 ramdisk_size="${ARGUMENT#ramdisk-size=}"
 235                                 ;;
 236
 237                         swapon)
 238                                 SWAPON="Yes"
 239                                 export SWAPON
 240                                 ;;
 241
 242                         persistent)
 243                                 PERSISTENT="Yes"
 244                                 export PERSISTENT
 245                                 ;;
 246
 247                         persistent=*)
 248                                 PERSISTENT="${ARGUMENT#persistent=}"
 249                                 if [ -z "${PERSISTENT}" ]
 250                                 then
 251                                         PERSISTENT="Yes"
 252                                 fi
 253                                 export PERSISTENT
 254                                 ;;
 255
 256                         persistent-encryption=*)
 257                                 PERSISTENT_ENCRYPTION="${ARGUMENT#*=}"
 258                                 export PERSISTENT_ENCRYPTION
 259                                 ;;
 260
 261                         persistent-media=*)
 262                                 PERSISTENT_MEDIA="${ARGUMENT#*=}"
 263                                 export PERSISTENT_MEDIA
 264                                 ;;
 265
 266                         persistent-path=*)
 267                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 268                                 export PERSISTENT_PATH
 269                                 ;;
 270
 271                         persistent-storage=*)
 272                                 PERSISTENT_STORAGE="${ARGUMENT#persistent-storage=}"
 273                                 export PERSISTENT_STORAGE
 274                                 ;;
 275
 276                         persistent-subtext=*)
 277                                 root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
 278                                 home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
 279                                 root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 280                                 home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 281                                 ;;
 282
 283                         nopersistent)
 284                                 NOPERSISTENT="Yes"
 285                                 export NOPERSISTENT
 286                                 ;;
 287
 288                         noprompt)
 289                                 NOPROMPT="Yes"
 290                                 export NOPROMPT
 291                                 ;;
 292
 293                         noprompt=*)
 294                                 NOPROMPT="${ARGUMENT#noprompt=}"
 295                                 export NOPROMPT
 296                                 ;;
 297
 298                         quickusbmodules)
 299                                 QUICKUSBMODULES="Yes"
 300                                 export QUICKUSBMODULES
 301                                 ;;
 302
 303                         preseed/file=*|file=*)
 304                                 LOCATIONS="${ARGUMENT#*=} ${LOCATIONS}"
 305                                 export LOCATIONS
 306                                 ;;
 307
 308                         nopreseed)
 309                                 NOPRESEED="Yes"
 310                                 export NOPRESEED
 311                                 ;;
 312
 313                         */*=*)
 314                                 question="${ARGUMENT%%=*}"
 315                                 value="${ARGUMENT#*=}"
 316                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 317                                 export PRESEEDS
 318                                 ;;
 319
 320                         showmounts)
 321                                 SHOWMOUNTS="Yes"
 322                                 export SHOWMOUNTS
 323                                 ;;
 324
 325                         silent)
 326                                 SILENT="Yes"
 327                                 export SILENT
 328                                 ;;
 329
 330                         todisk=*)
 331                                 TODISK="${ARGUMENT#todisk=}"
 332                                 export TODISK
 333                                 ;;
 334
 335                         toram)
 336                                 TORAM="Yes"
 337                                 export TORAM
 338                                 ;;
 339
 340                         toram=*)
 341                                 TORAM="Yes"
 342                                 MODULETORAM="${ARGUMENT#toram=}"
 343                                 export TORAM MODULETORAM
 344                                 ;;
 345
 346                         exposedroot)
 347                                 EXPOSED_ROOT="Yes"
 348                                 export EXPOSED_ROOT
 349                                 ;;
 350
 351                         plainroot)
 352                                 PLAIN_ROOT="Yes"
 353                                 export PLAIN_ROOT
 354                                 ;;
 355
 356                         skipunion)
 357                                 SKIP_UNION_MOUNTS="Yes"
 358                                 export SKIP_UNION_MOUNTS
 359                                 ;;
 360
 361                         root=*)
 362                                 ROOT="${ARGUMENT#root=}"
 363                                 export ROOT
 364                                 ;;
 365
 366                         union=*)
 367                                 UNIONTYPE="${ARGUMENT#union=}"
 368                                 export UNIONTYPE
 369                                 ;;
 370                 esac
 371         done
 372
 373         # sort of compatibility with netboot.h from linux docs
 374         if [ -z "${NETBOOT}" ]
 375         then
 376                 if [ "${ROOT}" = "/dev/nfs" ]
 377                 then
 378                         NETBOOT="nfs"
 379                         export NETBOOT
 380                 elif [ "${ROOT}" = "/dev/cifs" ]
 381                 then
 382                         NETBOOT="cifs"
 383                         export NETBOOT
 384                 fi
 385         fi
 386
 387         if [ -z "${MODULE}" ]
 388         then
 389                 MODULE="filesystem"
 390                 export MODULE
 391         fi
 392
 393         if [ -z "${UNIONTYPE}" ]
 394         then
 395                 UNIONTYPE="aufs"
 396                 export UNIONTYPE
 397         fi
 398
 399         if [ -n "${PERSISTENT}" ] && [ -z "${PERSISTENT_STORAGE}" ]
 400         then
 401                 PERSISTENT_STORAGE="filesystem,file"
 402                 export PERSISTENT_STORAGE
 403         fi
 404 }
 405
 406 is_live_path ()
 407 {
 408         DIRECTORY="${1}"
 409
 410         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 411         then
 412                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 413                 do
 414                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 415                         then
 416                                 return 0
 417                         fi
 418                 done
 419         fi
 420
 421         return 1
 422 }
 423
 424 matches_uuid ()
 425 {
 426         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 427         then
 428                 return 0
 429         fi
 430
 431         path="${1}"
 432         uuid="$(cat /conf/uuid.conf)"
 433
 434         for try_uuid_file in "${path}/.disk/live-uuid"*
 435         do
 436                 [ -e "${try_uuid_file}" ] || continue
 437
 438                 try_uuid="$(cat "${try_uuid_file}")"
 439
 440                 if [ "${uuid}" = "${try_uuid}" ]
 441                 then
 442                         return 0
 443                 fi
 444         done
 445
 446         return 1
 447 }
 448
 449 get_backing_device ()
 450 {
 451         case "${1}" in
 452                 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 453                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 454                         ;;
 455
 456                 *.dir)
 457                         echo "directory"
 458                         ;;
 459
 460                 *)
 461                         panic "Unrecognized live filesystem: ${1}"
 462                         ;;
 463         esac
 464 }
 465
 466 match_files_in_dir ()
 467 {
 468         # Does any files match pattern ${1} ?
 469         local pattern="${1}"
 470
 471         if [ "$(echo ${pattern})" != "${pattern}" ]
 472         then
 473                 return 0
 474         fi
 475
 476         return 1
 477 }
 478
 479 mount_images_in_directory ()
 480 {
 481         directory="${1}"
 482         rootmnt="${2}"
 483         mac="${3}"
 484
 485
 486         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 487                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 488                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 489                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 490                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 491                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 492         then
 493                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 494                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 495         else
 496                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 497         fi
 498 }
 499
 500 is_nice_device ()
 501 {
 502         sysfs_path="${1#/sys}"
 503
 504         if [ -e /lib/udev/path_id ]
 505         then
 506                 # squeeze
 507                 PATH_ID="/lib/udev/path_id"
 508         else
 509                 # wheezy/sid (udev >= 174)
 510                 PATH_ID="/sbin/udevadm test-builtin path_id"
 511         fi
 512
 513         if "${PATH_ID}" "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-[^-]*-(ide|sas|scsi|usb|virtio)|platform-sata_mv|platform-orion-ehci|platform-mmc|platform-mxsdhci)"
 514         then
 515                 return 0
 516         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 517         then
 518                 return 0
 519         elif echo ${sysfs_path} | grep -q "^/block/dm-"
 520         then
 521                 return 0
 522         elif echo ${sysfs_path} | grep -q "^/block/mtdblock"
 523         then
 524                 return 0
 525         fi
 526
 527         return 1
 528 }
 529
 530 copy_live_to ()
 531 {
 532         copyfrom="${1}"
 533         copytodev="${2}"
 534         copyto="${copyfrom}_swap"
 535
 536         if [ -z "${MODULETORAM}" ]
 537         then
 538                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 539         else
 540                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 541
 542                 if [ -f "${MODULETORAMFILE}" ]
 543                 then
 544                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 545                 else
 546                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 547                         return 1
 548                 fi
 549         fi
 550
 551         if [ "${copytodev}" = "ram" ]
 552         then
 553                 # copying to ram:
 554                 freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 555                 mount_options="-o size=${size}k"
 556                 free_string="memory"
 557                 fstype="tmpfs"
 558                 dev="/dev/shm"
 559         else
 560                 # it should be a writable block device
 561                 if [ -b "${copytodev}" ]
 562                 then
 563                         dev="${copytodev}"
 564                         free_string="space"
 565                         fstype=$(get_fstype "${dev}")
 566                         freespace=$(fs_size "${dev}")
 567                 else
 568                         log_warning_msg "${copytodev} is not a block device."
 569                         return 1
 570                 fi
 571         fi
 572
 573         if [ "${freespace}" -lt "${size}" ]
 574         then
 575                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 576                 return 1
 577         fi
 578
 579         # Custom ramdisk size
 580         if [ -z "${mount_options}" ] && [ -n "${ramdisk_size}" ]
 581         then
 582                 # FIXME: should check for wrong values
 583                 mount_options="-o size=${ramdisk_size}"
 584         fi
 585
 586         # begin copying (or uncompressing)
 587         mkdir "${copyto}"
 588         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 589         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 590
 591         if [ "${extension}" = "tgz" ]
 592         then
 593                 cd "${copyto}"
 594                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 595                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 596                 mount -r -o move "${copyto}" "${rootmnt}"
 597                 cd "${OLDPWD}"
 598         else
 599                 if [ -n "${MODULETORAMFILE}" ]
 600                 then
 601                         if [ -x /bin/rsync ]
 602                         then
 603                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 604                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 605                         else
 606                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 607                         fi
 608                 else
 609                         if [ -x /bin/rsync ]
 610                         then
 611                                 echo " * Copying whole medium to RAM" 1>/dev/console
 612                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 613                         else
 614                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 615                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
 616                                 if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
 617                                 then
 618                                         cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
 619                                 fi
 620                         fi
 621                 fi
 622
 623                 umount ${copyfrom}
 624                 mount -r -o move ${copyto} ${copyfrom}
 625         fi
 626
 627         rmdir ${copyto}
 628         return 0
 629 }
 630
 631 do_netsetup ()
 632 {
 633         modprobe -q af_packet # For DHCP
 634
 635         udevadm trigger
 636         udevadm settle
 637
 638         [ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
 639         echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
 640
 641         if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && \
 642            [ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
 643         then
 644
 645
 646         # support for Syslinux IPAPPEND parameter
 647         # it sets the BOOTIF variable on the kernel parameter
 648
 649         if [ -n "${BOOTIF}" ]
 650         then
 651                 # pxelinux sets BOOTIF to a value based on the mac address of the
 652                 # network card used to PXE boot, so use this value for DEVICE rather
 653                 # than a hard-coded device name from initramfs.conf. this facilitates
 654                 # network booting when machines may have multiple network cards.
 655                 # pxelinux sets BOOTIF to 01-$mac_address
 656
 657                 # strip off the leading "01-", which isn't part of the mac
 658                 # address
 659                 temp_mac=${BOOTIF#*-}
 660
 661                 # convert to typical mac address format by replacing "-" with ":"
 662                 bootif_mac=""
 663                 IFS='-'
 664                 for x in $temp_mac
 665                 do
 666                         if [ -z "$bootif_mac" ]
 667                         then
 668                                 bootif_mac="$x"
 669                         else
 670                                 bootif_mac="$bootif_mac:$x"
 671                         fi
 672                 done
 673                 unset IFS
 674
 675                 # look for devices with matching mac address, and set DEVICE to
 676                 # appropriate value if match is found.
 677
 678                 for device in /sys/class/net/*
 679                 do
 680                         if [ -f "$device/address" ]
 681                         then
 682                                 current_mac=$(cat "$device/address")
 683
 684                                 if [ "$bootif_mac" = "$current_mac" ]
 685                                 then
 686                                         DEVICE=${device##*/}
 687                                         break
 688                                 fi
 689                         fi
 690                 done
 691         fi
 692
 693         # if ethdevice was not specified on the kernel command line
 694         # make sure we try to get a working network configuration
 695         # for *every* present network device (except for loopback of course)
 696         if [ -z "$ETHDEVICE" ] ; then
 697                 echo "If you want to boot from a specific device use bootoption ethdevice=..."
 698                 for device in /sys/class/net/*; do
 699                         dev=${device##*/} ;
 700                         if [ "$dev" != "lo" ] ; then
 701                                 ETHDEVICE="$ETHDEVICE $dev"
 702                         fi
 703                 done
 704         fi
 705
 706         # split args of ethdevice=eth0,eth1 into "eth0 eth1"
 707         for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
 708                 devlist="$devlist $device"
 709         done
 710
 711         # this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
 712         # an endless loop; iff execution fails give it two further tries, that's
 713         # why we use '$devlist $devlist $devlist' for the other for loop
 714         for dev in $devlist $devlist $devlist ; do
 715                 echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
 716                 ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
 717                 jobid=$!
 718                 sleep "$ETHDEV_TIMEOUT" ; sleep 1
 719                 if [ -r /proc/"$jobid"/status ] ; then
 720                         echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
 721                         kill -9 $jobid
 722                 fi
 723
 724                 # if configuration of device worked we should have an assigned
 725                 # IP address, iff so let's use the according as $DEVICE for later usage
 726                 # simple and primitive approach which seems to work fine
 727                 if ifconfig $dev | grep -q 'inet.*addr:' ; then
 728                         export DEVICE="$dev"
 729                         break
 730                 fi
 731         done
 732
 733         else
 734                 for interface in ${DEVICE}; do
 735                         ipconfig -t "$ETHDEV_TIMEOUT" ${interface} | tee /netboot-${interface}.config
 736                         [ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
 737                         if [ "$IPV4ADDR" != "0.0.0.0" ]
 738                         then
 739                                 break
 740                         fi
 741                 done
 742         fi
 743
 744         for interface in ${DEVICE}; do
 745                 # source relevant ipconfig output
 746                 OLDHOSTNAME=${HOSTNAME}
 747                 [ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
 748                 [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 749                 export HOSTNAME
 750
 751                 if [ -n "${interface}" ]
 752                 then
 753                         HWADDR="$(cat /sys/class/net/${interface}/address)"
 754                 fi
 755
 756                 if [ ! -e "/etc/resolv.conf" ]
 757                 then
 758                         echo "Creating /etc/resolv.conf"
 759
 760                         if [ -n "${DNSDOMAIN}" ]
 761                         then
 762                                 echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
 763                                 echo "search ${DNSDOMAIN}" >> /etc/resolv.conf
 764                         fi
 765
 766                         for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1}
 767                         do
 768                                 if [ -n "$i" ] && [ "$i" != 0.0.0.0 ]
 769                                 then
 770                                         echo "nameserver $i" >> /etc/resolv.conf
 771                                 fi
 772                         done
 773                 fi
 774
 775                 # Check if we have a network device at all
 776                 if ! ls /sys/class/net/"$interface" > /dev/null 2>&1 && \
 777                    ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 778                    ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 779                    ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 780                    ! ls /sys/class/net/ra0 > /dev/null 2>&1
 781                 then
 782                         panic "No supported network device found, maybe a non-mainline driver is required."
 783                 fi
 784         done
 785 }
 786
 787 do_netmount()
 788 {
 789         do_netsetup
 790
 791         if [ "${NFSROOT}" = "auto" ]
 792         then
 793                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 794         fi
 795
 796         rc=1
 797
 798         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] )
 799         then
 800                 do_httpmount
 801                 return $?
 802         fi
 803
 804         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 805         then
 806                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 807         fi
 808
 809         log_begin_msg "Trying netboot from ${NFSROOT}"
 810
 811         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 812         then
 813                 rc=0
 814         elif do_nfsmount
 815         then
 816                 NETBOOT="nfs"
 817                 export NETBOOT
 818                 rc=0
 819         fi
 820
 821         log_end_msg
 822         return ${rc}
 823 }
 824
 825 do_iscsi()
 826 {
 827         do_netsetup
 828         #modprobe ib_iser
 829         modprobe iscsi_tcp
 830         local debugopt=""
 831         [ "${DEBUG}" == "Yes" ] && debugopt="-d 8"
 832         #FIXME this name is supposed to be unique - some date + ifconfig hash?
 833         ISCSI_INITIATORNAME="iqn.1993-08.org.debian.live:01:$(echo "${HWADDR}" | sed -e s/://g)"
 834         export ISCSI_INITIATORNAME
 835         if [ -n "${ISCSI_SERVER}" ] ; then
 836                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_SERVER}" -p "${ISCSI_PORT}"
 837         else
 838                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_PORTAL}" -p 3260
 839         fi
 840         if [ $? != 0 ]
 841         then
 842                 panic "Failed to log into iscsi target"
 843         fi
 844         local host="$(ls -d /sys/class/scsi_host/host*/device/iscsi_host:host* \
 845                             /sys/class/scsi_host/host*/device/iscsi_host/host* | sed -e 's:/device.*::' -e 's:.*host::')"
 846         if [ -n "${host}" ]
 847         then
 848                 local devices=""
 849                 local i=0
 850                 while [ -z "${devices}" -a $i -lt 60 ]
 851                 do
 852                         sleep 1
 853                         devices="$(ls -d /sys/class/scsi_device/${host}*/device/block:* \
 854                                          /sys/class/scsi_device/${host}*/device/block/* | sed -e 's!.*[:/]!!')"
 855                         i=$(expr $i + 1)
 856                         echo -ne $i\\r
 857                 done
 858                 for dev in $devices
 859                 do
 860                         if check_dev "null" "/dev/$dev"
 861                         then
 862                                 NETBOOT="iscsi"
 863                                 export NETBOOT
 864                                 return 0;
 865                         fi
 866                 done
 867                 panic "Failed to locate a live device on iSCSI devices (tried: $devices)."
 868         else
 869                 panic "Failed to locate iSCSI host in /sys"
 870         fi
 871 }
 872
 873 do_httpmount ()
 874 {
 875         rc=1
 876
 877         for webfile in HTTPFS FTPFS FETCH
 878         do
 879                 local url="$(eval echo \"\$\{${webfile}\}\")"
 880                 local extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 881
 882                 if [ -n "$url" ]
 883                 then
 884                         case "${extension}" in
 885                                 iso|squashfs|tgz|tar)
 886                                         if [ "${extension}" = "iso" ]
 887                                         then
 888                                                 mkdir -p "${alt_mountpoint}"
 889                                                 dest="${alt_mountpoint}"
 890                                         else
 891                                                 local dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 892                                                 mount -t ramfs ram "${mountpoint}"
 893                                                 mkdir -p "${dest}"
 894                                         fi
 895                                         if [ "${webfile}" = "FETCH" ]
 896                                         then
 897                                                 case "$url" in
 898                                                         tftp*)
 899                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 900                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 901                                                                 lfile="$(basename $url)"
 902                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 903                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 904                                                         ;;
 905
 906                                                         *)
 907                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 908                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 909                                                                 ;;
 910                                                 esac
 911                                         else
 912                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 913                                                 if [ "${webfile}" = "FTPFS" ]
 914                                                 then
 915                                                         FUSE_MOUNT="curlftpfs"
 916                                                         url="$(dirname ${url})"
 917                                                 else
 918                                                         FUSE_MOUNT="httpfs"
 919                                                 fi
 920                                                 modprobe fuse
 921                                                 $FUSE_MOUNT "${url}" "${dest}"
 922                                                 ROOT_PID="$(minips h -C "$FUSE_MOUNT" | { read x y ; echo "$x" ; } )"
 923                                         fi
 924                                         [ ${?} -eq 0 ] && rc=0
 925                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 926                                         if [ "${extension}" = "iso" ]
 927                                         then
 928                                                 isoloop=$(setup_loop "${dest}/$(basename "${url}")" "loop" "/sys/block/loop*" "" '')
 929                                                 mount -t iso9660 "${isoloop}" "${mountpoint}"
 930                                                 rc=${?}
 931                                         fi
 932                                         break
 933                                         ;;
 934
 935                                 *)
 936                                         log_begin_msg "Unrecognized archive extension for ${url}"
 937                                         ;;
 938                         esac
 939                 fi
 940         done
 941
 942         if [ ${rc} != 0 ]
 943         then
 944                 if [ -d "${alt_mountpoint}" ]
 945                 then
 946                         umount "${alt_mountpoint}"
 947                         rmdir "${alt_mountpoint}"
 948                 fi
 949                 umount "${mountpoint}"
 950         elif [ "${webfile}"  != "FETCH" ] ; then
 951                 NETBOOT="${webfile}"
 952                 export NETBOOT
 953         fi
 954
 955         return ${rc}
 956 }
 957
 958 do_nfsmount ()
 959 {
 960         rc=1
 961
 962         modprobe -q nfs
 963
 964         if [ -z "${NFSOPTS}" ]
 965         then
 966                 NFSOPTS=""
 967         fi
 968
 969         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 970
 971         # FIXME: This while loop is an ugly HACK round an nfs bug
 972         i=0
 973         while [ "$i" -lt 60 ]
 974         do
 975                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 976                 sleep 1
 977                 i="$(($i + 1))"
 978         done
 979
 980         return ${rc}
 981 }
 982
 983 do_cifsmount ()
 984 {
 985         rc=1
 986
 987         if [ -x "/sbin/mount.cifs" ]
 988         then
 989                 if [ -z "${NFSOPTS}" ]
 990                 then
 991                         CIFSOPTS="-ouser=root,password="
 992                 else
 993                         CIFSOPTS="${NFSOPTS}"
 994                 fi
 995
 996                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 997                 modprobe -q cifs
 998
 999                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
1000                 then
1001                         rc=0
1002                 fi
1003         fi
1004
1005         return ${rc}
1006 }
1007
1008 do_snap_copy ()
1009 {
1010         fromdev="${1}"
1011         todir="${2}"
1012         snap_type="${3}"
1013         size=$(fs_size "${fromdev}" "" "used")
1014
1015         if [ -b "${fromdev}" ]
1016         then
1017                 log_success_msg "Copying snapshot ${fromdev} to ${todir}..."
1018
1019                 # look for free mem
1020                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
1021                 then
1022                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
1023                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
1024                 else
1025                         freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
1026                 fi
1027
1028                 tomount="/mnt/tmpsnap"
1029
1030                 if [ ! -d "${tomount}" ]
1031                 then
1032                         mkdir -p "${tomount}"
1033                 fi
1034
1035                 fstype=$(get_fstype "${fromdev}")
1036
1037                 if [ -n "${fstype}" ]
1038                 then
1039                         # Copying stuff...
1040                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
1041                         cp -a "${tomount}"/* ${todir}
1042                         umount "${tomount}"
1043                 else
1044                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
1045                 fi
1046
1047                 rmdir "${tomount}"
1048
1049                 if echo ${fromdev} | grep -qs loop
1050                 then
1051                         losetup -d "${fromdev}"
1052                 fi
1053
1054                 return 0
1055         else
1056                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
1057                 return 1
1058         fi
1059 }
1060
1061 find_snap ()
1062 {
1063         # Look for ${snap_label}.* in block devices
1064         snap_label="${1}"
1065         black_listed_devices="${2}"
1066         white_listed_devices="${3}"
1067
1068         if echo ${PERSISTENT_STORAGE} | grep -qw file
1069         then
1070                 # search for image files
1071                 snapdata=$(find_files "${PERSISTENT_PATH}${snap_label}.squashfs ${PERSISTENT_PATH}${snap_label}.cpio.gz ${PERSISTENT_PATH}${snap_label}.ext2 ${PERSISTENT_PATH}${snap_label}.ext3 ${PERSISTENT_PATH}${snap_label}.ext4 ${PERSISTENT_PATH}${snap_label}.jffs2" "${black_listed_devices}" "${white_listed_devices}")
1072         fi
1073
1074         if echo ${PERSISTENT_STORAGE} | grep -qw filesystem && [ -z "${snapdata}" ]
1075         then
1076                 snapdata=$(find_cow_device "${snap_label}" "${black_listed_devices}" "${white_listed_devices}")
1077         fi
1078         echo "${snapdata}"
1079 }
1080
1081 try_snap ()
1082 {
1083         # copy the contents of previously found snapshot to ${snap_mount}
1084         # and remember the device and filename for resync on exit in live-boot.init
1085
1086         snapdata="${1}"
1087         snap_mount="${2}"
1088         snap_type="${3}"
1089         snap_relpath="${4}"
1090
1091         if [ -z "${snap_relpath}" ]
1092         then
1093                 # root snapshot, default usage
1094                 snap_relpath="/"
1095         else
1096                 # relative snapshot (actually used just for "/home" snapshots)
1097                 snap_mount="${2}${snap_relpath}"
1098         fi
1099
1100         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
1101         then
1102                 log_success_msg "found snapshot: ${snapdata}"
1103                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
1104                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
1105                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
1106
1107                 if ! try_mount "${snapdev}" "${snapback}" "ro"
1108                 then
1109                         break
1110                 fi
1111
1112                 RES="0"
1113
1114                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
1115                 then
1116                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
1117                         dev=$(get_backing_device "${snapback}/${snapfile}")
1118
1119                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1120                         RES="$?"
1121                 else
1122                         # cpio.gz snapshot
1123
1124                         # Unfortunately klibc's cpio is incompatible with the
1125                         # rest of the world; everything else requires -u -d,
1126                         # while klibc doesn't implement them. Try to detect
1127                         # whether it's in use.
1128                         cpiopath="$(which cpio)" || true
1129                         if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
1130                         then
1131                                 cpioargs=
1132                         else
1133                                 cpioargs='--unconditional --make-directories'
1134                         fi
1135
1136                         if [ -s "${snapback}/${snapfile}" ]
1137                         then
1138                                 BEFOREDIR="$(pwd)"
1139                                 cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null
1140                                 RES="$?"
1141                                 cd "${BEFOREDIR}"
1142                         else
1143                                 log_warning_msg "${snapback}/${snapfile} is empty, adding it for sync on reboot."
1144                                 RES="0"
1145                         fi
1146
1147                         if [ "${RES}" != "0" ]
1148                         then
1149                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
1150                         fi
1151                 fi
1152
1153                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1154
1155                 if [ "${RES}" != "0" ]
1156                 then
1157                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1158                 fi
1159
1160         elif [ -b "${snapdata}" ]
1161         then
1162                 # Try to find if it could be a snapshot partition
1163                 dev="${snapdata}"
1164                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1165                 if echo "${dev}" | grep -qs loop
1166                 then
1167                         # strange things happens, user confused?
1168                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1169                         snapfile=$(basename ${snaploop})
1170                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1171                 else
1172                         snapdev="${dev}"
1173                 fi
1174
1175                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1176                 then
1177                         log_warning_msg "Impossible to include the ${snap_type} Snapshot (i)"
1178                         return 1
1179                 else
1180                         if [ -n "${snapfile}" ]
1181                         then
1182                                 # it was a loop device, user confused
1183                                 umount ${snapdev}
1184                         fi
1185                 fi
1186         else
1187                 log_warning_msg "Impossible to include the ${snap_type} Snapshot (o)"
1188                 return 1
1189         fi
1190
1191         echo "export ${snap_type}SNAP=${snap_relpath}:${snapdev}:${snapfile}" >> snapshot.conf # for resync on reboot/halt
1192         return 0
1193 }
1194
1195 setup_unionfs ()
1196 {
1197         image_directory="${1}"
1198         rootmnt="${2}"
1199         addimage_directory="${3}"
1200
1201         case ${UNIONTYPE} in
1202                 aufs|unionfs)
1203                         modprobe -q -b ${UNIONTYPE}
1204
1205                         if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
1206                         then
1207                                 echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
1208                                 echo "This might be really slow."
1209
1210                                 UNIONTYPE="unionfs-fuse"
1211                         fi
1212                         ;;
1213         esac
1214
1215         if [ "${UNIONTYPE}" = unionfs-fuse ]
1216         then
1217                 modprobe fuse
1218         fi
1219
1220         # run-init can't deal with images in a subdir, but we're going to
1221         # move all of these away before it runs anyway.  No, we're not,
1222         # put them in / since move-mounting them into / breaks mono and
1223         # some other apps.
1224
1225         croot="/"
1226
1227         # Let's just mount the read-only file systems first
1228         rofslist=""
1229
1230         if [ "${UNIONTYPE}" = "aufs" ]
1231         then
1232                 roopt="rr+wh"
1233                 noxino_opt="noxino,"
1234         elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
1235         then
1236                 roopt="RO"
1237         else
1238                 roopt="ro"
1239         fi
1240
1241         if [ -z "${PLAIN_ROOT}" ]
1242         then
1243                 # Read image names from ${MODULE}.module if it exists
1244                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1245                 then
1246                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1247                         do
1248                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1249                         done
1250                 elif [ -e "${image_directory}/${MODULE}.module" ]
1251                 then
1252                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1253                         do
1254                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1255                         done
1256                 else
1257                         # ${MODULE}.module does not exist, create a list of images
1258                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1259                         do
1260                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1261                                 do
1262                                         if [ -e "${IMAGE}" ]
1263                                         then
1264                                                 image_string="${image_string} ${IMAGE}"
1265                                         fi
1266                                 done
1267                         done
1268
1269                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1270                         then
1271                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1272                                 do
1273                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1274                                         do
1275                                                 if [ -e "${IMAGE}" ]
1276                                                 then
1277                                                         image_string="${image_string} ${IMAGE}"
1278                                                 fi
1279                                         done
1280                                 done
1281                         fi
1282
1283                         # Now sort the list
1284                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1285                 fi
1286
1287                 [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1288
1289                 mkdir -p "${croot}"
1290
1291                 for image in ${image_string}
1292                 do
1293                         imagename=$(basename "${image}")
1294
1295                         export image devname
1296                         maybe_break live-realpremount
1297                         log_begin_msg "Running /scripts/live-realpremount"
1298                         run_scripts /scripts/live-realpremount
1299                         log_end_msg
1300
1301                         if [ -d "${image}" ]
1302                         then
1303                                 # it is a plain directory: do nothing
1304                                 rofslist="${image} ${rofslist}"
1305                         elif [ -f "${image}" ]
1306                         then
1307                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1308                                 then
1309                                         backdev=$(get_backing_device "${image}" "-r")
1310                                 else
1311                                         backdev=$(get_backing_device "${image}")
1312                                 fi
1313                                 fstype=$(get_fstype "${backdev}")
1314
1315                                 if [ "${fstype}" = "unknown" ]
1316                                 then
1317                                         panic "Unknown file system type on ${backdev} (${image})"
1318                                 fi
1319
1320                                 if [ -z "${fstype}" ]
1321                                 then
1322                                         fstype="${imagename##*.}"
1323                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1324                                 fi
1325
1326                                 if [ "${UNIONTYPE}" != "unionmount" ]
1327                                 then
1328                                         mpoint="${croot}/${imagename}"
1329                                         rofslist="${mpoint} ${rofslist}"
1330                                 else
1331                                         mpoint="${rootmnt}"
1332                                         rofslist="${rootmnt} ${rofslist}"
1333                                 fi
1334                                 mkdir -p "${mpoint}"
1335                                 log_begin_msg "Mounting \"${image}\" on \"${mpoint}\" via \"${backdev}\""
1336                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${mpoint}" || panic "Can not mount ${backdev} (${image}) on ${mpoint}"
1337                                 log_end_msg
1338                         fi
1339                 done
1340         else
1341                 # we have a plain root system
1342                 mkdir -p "${croot}/filesystem"
1343                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1344                 mount -t $(get_fstype "${image_directory}") -o ro,noatime "${image_directory}" "${croot}/filesystem" || \
1345                         panic "Can not mount ${image_directory} on ${croot}/filesystem" && \
1346                         rofslist="${croot}/filesystem ${rofslist}"
1347                 # probably broken:
1348                 mount -o bind ${croot}/filesystem $mountpoint
1349                 log_end_msg
1350         fi
1351
1352         mkdir -p /cow
1353
1354         # Looking for "${root_persistence}" device or file
1355         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1356         then
1357
1358                 if [ -z "${QUICKUSBMODULES}" ]
1359                 then
1360                         # Load USB modules
1361                         num_block=$(ls -l /sys/block | wc -l)
1362                         for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1363                         do
1364                                 modprobe -q -b ${module}
1365                         done
1366
1367                         udevadm trigger
1368                         udevadm settle
1369
1370                         # For some reason, udevsettle does not block in this scenario,
1371                         # so we sleep for a little while.
1372                         #
1373                         # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1374                         for timeout in 5 4 3 2 1
1375                         do
1376                                 sleep 1
1377
1378                                 if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1379                                 then
1380                                         break
1381                                 fi
1382                         done
1383                 fi
1384
1385                 case "${PERSISTENT_MEDIA}" in
1386                         removable)
1387                                 whitelistdev="$(removable_dev)"
1388                                 ;;
1389                         removable-usb)
1390                                 whitelistdev="$(removable_usb_dev)"
1391                                 ;;
1392                         *)
1393                                 whitelistdev=""
1394                                 ;;
1395                 esac
1396
1397                 # search for label and files (this could be hugely optimized)
1398                 cowprobe=$(find_cow_device "${root_persistence}" "${blacklistdev}" "${whitelistdev}")
1399                 if [ -b "${cowprobe}" ]
1400                 then
1401                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1402                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1403                         # snapshots to be sure to really store some e.g key config files,
1404                         # but not on the same media
1405                         blacklistdev="${cowprobe}"
1406                         PERSISTENCE_IS_ON="1"
1407                         export PERSISTENCE_IS_ON
1408                 fi
1409                 # homecow just mount something on /home, this should be generalized some way
1410                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}" "${whitelistdev}")
1411                 if [ -b "${homecow}" ]
1412                 then
1413                         PERSISTENCE_IS_ON="1"
1414                         export PERSISTENCE_IS_ON
1415                 fi
1416                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}" "${whitelistdev}")
1417                 # This second type should be removed when snapshot will get smarter,
1418                 # hence when "/etc/live-snapshot*list" will be supported also by
1419                 # ext2|ext3|ext4|jffs2 snapshot types.
1420                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}" "${whitelistdev}")
1421
1422                 if [ -b "${cowprobe}" ]
1423                 then
1424                         cowdevice=${cowprobe}
1425                         cow_fstype=$(get_fstype "${cowprobe}")
1426                         cow_mountopt="rw,noatime"
1427
1428                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1429                         then
1430                                 fsck -y ${cowdevice}
1431                         fi
1432                 else
1433                         log_warning_msg "Unable to find the persistent medium"
1434                         cowdevice="tmpfs"
1435                         cow_fstype="tmpfs"
1436                         cow_mountopt="rw,noatime,mode=755"
1437                 fi
1438         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1439         then
1440                 # check if there are any nfs options
1441                 if echo ${NFS_COW}|grep -q ','
1442                 then
1443                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1444                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1445                 else
1446                         nfs_cow_opts="-o nolock"
1447                         nfs_cow=${NFS_COW}
1448                 fi
1449                 mac="$(get_mac)"
1450                 if [ -n "${mac}" ]
1451                 then
1452                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1453                         cow_fstype="nfs"
1454                 else
1455                         panic "unable to determine mac address"
1456                 fi
1457         else
1458                 cowdevice="tmpfs"
1459                 cow_fstype="tmpfs"
1460                 cow_mountopt="rw,noatime,mode=755"
1461         fi
1462
1463         if [ "${UNIONTYPE}" != "unionmount" ]
1464         then
1465
1466                 if [ "${cow_fstype}" = "nfs" ]
1467                 then
1468                         log_begin_msg \
1469                                 "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1470                         nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1471                                 panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1472                 else
1473                         mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1474                                 panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1475                 fi
1476         fi
1477
1478         rofscount=$(echo ${rofslist} |wc -w)
1479
1480         if [ ${rofscount} -ne 1 ]
1481         then
1482                 panic "only one RO file system supported with exposedroot: ${rofslist}"
1483         fi
1484         rofs=${rofslist%% }
1485
1486         if [ -n "${EXPOSED_ROOT}" ]
1487         then
1488                 mount --bind ${rofs} ${rootmnt} || \
1489                         panic "bind mount of ${rofs} failed"
1490
1491                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1492                 then
1493                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1494                 else
1495                         cow_dirs=''
1496                 fi
1497         else
1498                 cow_dirs="/"
1499         fi
1500
1501         if [ "${cow_fstype}" != "tmpfs" ] && [ "${cow_dirs}" != "/" ] && [ "${UNIONTYPE}" = "unionmount" ]
1502         then
1503                 true # FIXME: Maybe it does, I don't really know.
1504                 #panic "unionmount does not support subunions (${cow_dirs})."
1505         fi
1506
1507         unionmountopts=""
1508         unionmountpoint=""
1509
1510         for dir in ${cow_dirs}; do
1511                 mkdir -p /cow${dir}
1512
1513                 unionmountpoint="${rootmnt}${dir}"
1514                 unionrw="/cow${dir}"
1515                 unionro="${rofs}${dir}"
1516                 # We don't handle spaces and other junk gracefully here, hopefully not needed.
1517                 case "${UNIONTYPE}" in
1518                         unionfs-fuse)
1519                                 unionmountopts="-o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid"
1520                                 unionmountopts="${unionmountopts} ${unionrw}=RW:${unionro}=RO"
1521                                 ( sysctl -w fs.file-max=391524 ; ulimit -HSn 16384
1522                                 unionfs-fuse ${unionmountopts} "${unionmountpoint}" ) && \
1523                                 ( mkdir -p /run/sendsigs.omit.d
1524                                 pidof unionfs-fuse >> /run/sendsigs.omit.d/unionfs-fuse || true )
1525                                 ;;
1526
1527                         unionmount)
1528                                 unionmountopts="-t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice}"
1529                                 mount_full $unionmountopts "${unionmountpoint}"
1530                                 ;;
1531
1532
1533                         *)
1534                                 unionmountopts="-o noatime,${noxino_opt}dirs=${unionrw}=rw:${unionro}=${roopt}"
1535                                 mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
1536                                 ;;
1537                 esac || \
1538                         panic "mount ${UNIONTYPE} on ${unionmountpoint} failed with option ${unionmountopts}"
1539         done
1540
1541         # Correct the permissions of /:
1542         chmod 0755 "${rootmnt}"
1543
1544         # tmpfs file systems
1545         touch /etc/fstab
1546         mkdir -p "${rootmnt}/live"
1547         mount -t tmpfs tmpfs ${rootmnt}/live
1548
1549         # Adding other custom mounts
1550         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1551         then
1552                 # directly mount /home
1553                 # FIXME: add a custom mounts configurable system
1554
1555                 if [ -b "${homecow}" ]
1556                 then
1557                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1558                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1559                 else
1560                         log_warning_msg "Unable to find the persistent home medium"
1561                 fi
1562
1563                 # Look for other snapshots to copy in
1564                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1565                 # This second type should be removed when snapshot grow smarter
1566                 try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home"
1567         fi
1568
1569         if [ -n "${SHOWMOUNTS}" ]
1570         then
1571                 for d in ${rofslist}
1572                 do
1573                         mkdir -p "${rootmnt}/live/${d##*/}"
1574
1575                         case d in
1576                                 *.dir)
1577                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1578                                         ;;
1579
1580                                 *)
1581                                         case "${UNIONTYPE}" in
1582                                                 unionfs-fuse)
1583                                                         mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1584                                                         ;;
1585
1586                                                 *)
1587                                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1588                                                         ;;
1589                                         esac
1590                                         ;;
1591                         esac
1592                 done
1593         fi
1594
1595         # shows cow fs on /cow for use by live-snapshot
1596         mkdir -p "${rootmnt}/live/cow"
1597         mount -o move /cow "${rootmnt}/live/cow" >/dev/null 2>&1 || mount -o bind /cow "${rootmnt}/live/cow" || log_warning_msg "Unable to move or bind /cow to ${rootmnt}/live/cow"
1598 }
1599
1600 check_dev ()
1601 {
1602         sysdev="${1}"
1603         devname="${2}"
1604         skip_uuid_check="${3}"
1605
1606         # support for fromiso=.../isofrom=....
1607         if [ -n "$FROMISO" ]
1608         then
1609                 ISO_DEVICE=$(dirname $FROMISO)
1610                 if ! [ -b $ISO_DEVICE ]
1611                 then
1612                         # to support unusual device names like /dev/cciss/c0d0p1
1613                         # as well we have to identify the block device name, let's
1614                         # do that for up to 15 levels
1615                         i=15
1616                         while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
1617                         do
1618                                 ISO_DEVICE=$(dirname ${ISO_DEVICE})
1619                                 [ -b "$ISO_DEVICE" ] && break
1620                                 i=$(($i -1))
1621                         done
1622                 fi
1623
1624                 if [ "$ISO_DEVICE" = "/" ]
1625                 then
1626                         echo "Warning: device for bootoption isofrom= ($FROMISO) not found.">>/live-boot.log
1627                 else
1628                         fs_type=$(get_fstype "${ISO_DEVICE}")
1629                         if is_supported_fs ${fs_type}
1630                         then
1631                                 mkdir /isofrom
1632                                 mount -t $fs_type "$ISO_DEVICE" /isofrom
1633                                 ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
1634                                 loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1635                                 devname="${loopdevname}"
1636                         else
1637                                 echo "Warning: unable to mount $ISO_DEVICE." >>/live-boot.log
1638                         fi
1639                 fi
1640         fi
1641
1642         if [ -z "${devname}" ]
1643         then
1644                 devname=$(sys2dev "${sysdev}")
1645         fi
1646
1647         if [ -d "${devname}" ]
1648         then
1649                 mount -o bind "${devname}" $mountpoint || continue
1650
1651                 if is_live_path $mountpoint
1652                 then
1653                         echo $mountpoint
1654                         return 0
1655                 else
1656                         umount $mountpoint
1657                 fi
1658         fi
1659
1660         IFS=","
1661         for device in ${devname}
1662         do
1663                 case "$device" in
1664                         *mapper*)
1665                                 # Adding lvm support
1666                                 if [ -x /scripts/local-top/lvm2 ]
1667                                 then
1668                                         ROOT="$device" resume="" /scripts/local-top/lvm2
1669                                 fi
1670                                 ;;
1671
1672                         /dev/md*)
1673                                 # Adding raid support
1674                                 if [ -x /scripts/local-top/mdadm ]
1675                                 then
1676                                         cp /conf/conf.d/md /conf/conf.d/md.orig
1677                                         echo "MD_DEVS=$device " >> /conf/conf.d/md
1678                                         /scripts/local-top/mdadm
1679                                         mv /conf/conf.d/md.orig /conf/conf.d/md
1680                                 fi
1681                                 ;;
1682                 esac
1683         done
1684         unset IFS
1685
1686         [ -n "$device" ] && devname="$device"
1687
1688         [ -e "$devname" ] || continue
1689
1690         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1691         then
1692                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1693                 devname="${loopdevname}"
1694         fi
1695
1696         fstype=$(get_fstype "${devname}")
1697
1698         if is_supported_fs ${fstype}
1699         then
1700                 devuid=$(blkid -o value -s UUID "$devname")
1701                 [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
1702                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1703                 [ -n "$devuid" ] && echo "$devuid" >> $tried
1704
1705                 if is_live_path ${mountpoint} && \
1706                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1707                 then
1708                         echo ${mountpoint}
1709                         return 0
1710                 else
1711                         umount ${mountpoint} 2>/dev/null
1712                 fi
1713         fi
1714
1715         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1716         then
1717                 losetup -d "${loopdevname}"
1718         fi
1719
1720         return 1
1721 }
1722
1723 find_livefs ()
1724 {
1725         timeout="${1}"
1726
1727         # don't start autodetection before timeout has expired
1728         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1729         then
1730                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1731                 then
1732                         return 1
1733                 fi
1734         fi
1735
1736         # first look at the one specified in the command line
1737         case "${LIVE_MEDIA}" in
1738                 removable-usb)
1739                         for sysblock in $(removable_usb_dev "sys")
1740                         do
1741                                 for dev in $(subdevices "${sysblock}")
1742                                 do
1743                                         if check_dev "${dev}"
1744                                         then
1745                                                 return 0
1746                                         fi
1747                                 done
1748                         done
1749                         return 1
1750                         ;;
1751
1752                 removable)
1753                         for sysblock in $(removable_dev "sys")
1754                         do
1755                                 for dev in $(subdevices "${sysblock}")
1756                                 do
1757                                         if check_dev "${dev}"
1758                                         then
1759                                                 return 0
1760                                         fi
1761                                 done
1762                         done
1763                         return 1
1764                         ;;
1765
1766                 *)
1767                         if [ ! -z "${LIVE_MEDIA}" ]
1768                         then
1769                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1770                                 then
1771                                         return 0
1772                                 fi
1773                         fi
1774                         ;;
1775         esac
1776
1777         # or do the scan of block devices
1778         # prefer removable devices over non-removable devices, so scan them first
1779         devices_to_scan="$(removable_dev 'sys') $(non_removable_dev 'sys')"
1780
1781         for sysblock in $devices_to_scan
1782         do
1783                 devname=$(sys2dev "${sysblock}")
1784                 [ -e "$devname" ] || continue
1785                 fstype=$(get_fstype "${devname}")
1786
1787                 if /lib/udev/cdrom_id ${devname} > /dev/null
1788                 then
1789                         if check_dev "null" "${devname}"
1790                         then
1791                                 return 0
1792                         fi
1793                 elif is_nice_device "${sysblock}"
1794                 then
1795                         for dev in $(subdevices "${sysblock}")
1796                         do
1797                                 if check_dev "${dev}"
1798                                 then
1799                                         return 0
1800                                 fi
1801                         done
1802                 elif [ "${fstype}" = "squashfs" -o \
1803                         "${fstype}" = "btrfs" -o \
1804                         "${fstype}" = "ext2" -o \
1805                         "${fstype}" = "ext3" -o \
1806                         "${fstype}" = "ext4" -o \
1807                         "${fstype}" = "jffs2" ]
1808                 then
1809                         # This is an ugly hack situation, the block device has
1810                         # an image directly on it.  It's hopefully
1811                         # live-boot, so take it and run with it.
1812                         ln -s "${devname}" "${devname}.${fstype}"
1813                         echo "${devname}.${fstype}"
1814                         return 0
1815                 fi
1816         done
1817
1818         return 1
1819 }
1820
1821 integrity_check ()
1822 {
1823         media_mountpoint="${1}"
1824
1825         log_begin_msg "Checking media integrity"
1826
1827         cd ${media_mountpoint}
1828         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1829         RC="${?}"
1830
1831         log_end_msg
1832
1833         if [ "${RC}" -eq 0 ]
1834         then
1835                 log_success_msg "Everything ok, will reboot in 10 seconds."
1836                 sleep 10
1837                 cd /
1838                 umount ${media_mountpoint}
1839                 sync
1840                 echo u > /proc/sysrq-trigger
1841                 echo b > /proc/sysrq-trigger
1842         else
1843                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1844         fi
1845 }
1846
1847 mountroot ()
1848 {
1849         if [ -x /scripts/local-top/cryptroot ]; then
1850             /scripts/local-top/cryptroot
1851         fi
1852
1853         exec 6>&1
1854         exec 7>&2
1855         exec > live-boot.log
1856         exec 2>&1
1857         tail -f live-boot.log >&7 &
1858         tailpid="${!}"
1859
1860         # Ensure 'panic' function is overridden
1861         . /scripts/live-functions
1862
1863         Arguments
1864
1865         maybe_break live-premount
1866         log_begin_msg "Running /scripts/live-premount"
1867         run_scripts /scripts/live-premount
1868         log_end_msg
1869
1870         # Needed here too because some things (*cough* udev *cough*)
1871         # changes the timeout
1872
1873         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1874         then
1875                 if do_netmount
1876                 then
1877                         livefs_root="${mountpoint}"
1878                 else
1879                         panic "Unable to find a live file system on the network"
1880                 fi
1881         else
1882                 if [ -n "${ISCSI_PORTAL}" ]
1883                 then
1884                         do_iscsi && livefs_root="${mountpoint}"
1885                 elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1886                 then
1887                         # Do a local boot from hd
1888                         livefs_root=${ROOT}
1889                 else
1890                         if [ -x /usr/bin/memdiskfind ]
1891                         then
1892                                 MEMDISK=$(/usr/bin/memdiskfind)
1893
1894                                 if [ $? -eq 0 ]
1895                                 then
1896                                         # We found a memdisk, set up phram
1897                                         modprobe phram phram=memdisk,${MEMDISK}
1898
1899                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
1900                                         modprobe mtdblock
1901                                 fi
1902                         fi
1903
1904                         # Scan local devices for the image
1905                         i=0
1906                         while [ "$i" -lt 60 ]
1907                         do
1908                                 livefs_root=$(find_livefs ${i})
1909
1910                                 if [ -n "${livefs_root}" ]
1911                                 then
1912                                         break
1913                                 fi
1914
1915                                 sleep 1
1916                                 i="$(($i + 1))"
1917                         done
1918                 fi
1919         fi
1920
1921         if [ -z "${livefs_root}" ]
1922         then
1923                 panic "Unable to find a medium containing a live file system"
1924         fi
1925
1926         if [ "${INTEGRITY_CHECK}" ]
1927         then
1928                 integrity_check "${livefs_root}"
1929         fi
1930
1931         if [ "${TORAM}" ]
1932         then
1933                 live_dest="ram"
1934         elif [ "${TODISK}" ]
1935         then
1936                 live_dest="${TODISK}"
1937         fi
1938
1939         if [ "${live_dest}" ]
1940         then
1941                 log_begin_msg "Copying live media to ${live_dest}"
1942                 copy_live_to "${livefs_root}" "${live_dest}"
1943                 log_end_msg
1944         fi
1945
1946         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1947         # because the mountpoint is left behind in /proc/mounts, so let's get
1948         # rid of it when running from RAM
1949         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1950         then
1951           losetup -d /dev/loop0
1952           grep -q /isofrom /proc/mounts && umount /isofrom
1953         fi
1954
1955         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1956         then
1957                 setup_unionfs "${livefs_root}" "${rootmnt}"
1958         else
1959                 mac="$(get_mac)"
1960                 mac="$(echo ${mac} | sed 's/-//g')"
1961                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1962         fi
1963
1964
1965         if [ -n "${ROOT_PID}" ] ; then
1966                 echo "${ROOT_PID}" > "${rootmnt}"/live/root.pid
1967         fi
1968
1969         log_end_msg
1970
1971         # unionfs-fuse needs /dev to be bind-mounted for the duration of
1972         # live-bottom; udev's init script will take care of things after that
1973         if [ "${UNIONTYPE}" = unionfs-fuse ]
1974         then
1975                 mount -n -o bind /dev "${rootmnt}/dev"
1976         fi
1977
1978         # Move to the new root filesystem so that programs there can get at it.
1979         if [ ! -d /root/live/image ]
1980         then
1981                 mkdir -p /root/live/image
1982                 mount --move /live/image /root/live/image
1983         fi
1984
1985         # aufs2 in kernel versions around 2.6.33 has a regression:
1986         # directories can't be accessed when read for the first the time,
1987         # causing a failure for example when accessing /var/lib/fai
1988         # when booting FAI, this simple workaround solves it
1989         ls /root/* >/dev/null 2>&1
1990
1991         # copy snapshot configuration if exists
1992         if [ -f snapshot.conf ]
1993         then
1994                 log_begin_msg "Copying snapshot.conf to ${rootmnt}/etc/live/boot.d"
1995                 if [ ! -d "${rootmnt}/etc/live/boot.d" ]
1996                 then
1997                         mkdir -p "${rootmnt}/etc/live/boot.d"
1998                 fi
1999                 cp snapshot.conf "${rootmnt}/etc/live/boot.d/"
2000                 log_end_msg
2001         fi
2002
2003         if [ -f /etc/resolv.conf ] && [ ! -s ${rootmnt}/etc/resolv.conf ]
2004         then
2005                 log_begin_msg "Copying /etc/resolv.conf to ${rootmnt}/etc/resolv.conf"
2006                 cp -v /etc/resolv.conf ${rootmnt}/etc/resolv.conf
2007                 log_end_msg
2008         fi
2009
2010         maybe_break live-bottom
2011         log_begin_msg "Running /scripts/live-bottom\n"
2012
2013         run_scripts /scripts/live-bottom
2014         log_end_msg
2015
2016         if [ "${UNIONFS}" = unionfs-fuse ]
2017         then
2018                 umount "${rootmnt}/dev"
2019         fi
2020
2021         exec 1>&6 6>&-
2022         exec 2>&7 7>&-
2023         kill ${tailpid}
2024         [ -w "${rootmnt}/var/log/" ] && cp live-boot.log "${rootmnt}/var/log/" 2>/dev/null
2025 }