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-encryption=*)
 248                                 PERSISTENT_ENCRYPTION="${ARGUMENT#*=}"
 249                                 export PERSISTENT_ENCRYPTION
 250                                 ;;
 251
 252                         persistent-media=*)
 253                                 PERSISTENT_MEDIA="${ARGUMENT#*=}"
 254                                 export PERSISTENT_MEDIA
 255                                 ;;
 256                         persistent-method=*)
 257                                 PERSISTENT_METHOD="${ARGUMENT#*=}"
 258                                 export PERSISTENT_METHOD
 259                                 ;;
 260
 261                         persistent-path=*)
 262                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 263                                 export PERSISTENT_PATH
 264                                 ;;
 265                         persistent-read-only)
 266                                 PERSISTENT_READONLY="Yes"
 267                                 export PERSISTENT_READONLY
 268                                 ;;
 269
 270                         persistent-storage=*)
 271                                 PERSISTENT_STORAGE="${ARGUMENT#persistent-storage=}"
 272                                 export PERSISTENT_STORAGE
 273                                 ;;
 274
 275                         persistent-subtext=*)
 276                                 root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
 277                                 home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
 278                                 root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 279                                 home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 280                                 ;;
 281
 282                         nopersistent)
 283                                 NOPERSISTENT="Yes"
 284                                 export NOPERSISTENT
 285                                 ;;
 286
 287                         noprompt)
 288                                 NOPROMPT="Yes"
 289                                 export NOPROMPT
 290                                 ;;
 291
 292                         noprompt=*)
 293                                 NOPROMPT="${ARGUMENT#noprompt=}"
 294                                 export NOPROMPT
 295                                 ;;
 296
 297                         quickusbmodules)
 298                                 QUICKUSBMODULES="Yes"
 299                                 export QUICKUSBMODULES
 300                                 ;;
 301
 302                         preseed/file=*|file=*)
 303                                 LOCATIONS="${ARGUMENT#*=} ${LOCATIONS}"
 304                                 export LOCATIONS
 305                                 ;;
 306
 307                         nopreseed)
 308                                 NOPRESEED="Yes"
 309                                 export NOPRESEED
 310                                 ;;
 311
 312                         */*=*)
 313                                 question="${ARGUMENT%%=*}"
 314                                 value="${ARGUMENT#*=}"
 315                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 316                                 export PRESEEDS
 317                                 ;;
 318
 319                         showmounts)
 320                                 SHOWMOUNTS="Yes"
 321                                 export SHOWMOUNTS
 322                                 ;;
 323
 324                         silent)
 325                                 SILENT="Yes"
 326                                 export SILENT
 327                                 ;;
 328
 329                         todisk=*)
 330                                 TODISK="${ARGUMENT#todisk=}"
 331                                 export TODISK
 332                                 ;;
 333
 334                         toram)
 335                                 TORAM="Yes"
 336                                 export TORAM
 337                                 ;;
 338
 339                         toram=*)
 340                                 TORAM="Yes"
 341                                 MODULETORAM="${ARGUMENT#toram=}"
 342                                 export TORAM MODULETORAM
 343                                 ;;
 344
 345                         exposedroot)
 346                                 EXPOSED_ROOT="Yes"
 347                                 export EXPOSED_ROOT
 348                                 ;;
 349
 350                         plainroot)
 351                                 PLAIN_ROOT="Yes"
 352                                 export PLAIN_ROOT
 353                                 ;;
 354
 355                         skipunion)
 356                                 SKIP_UNION_MOUNTS="Yes"
 357                                 export SKIP_UNION_MOUNTS
 358                                 ;;
 359
 360                         root=*)
 361                                 ROOT="${ARGUMENT#root=}"
 362                                 export ROOT
 363                                 ;;
 364
 365                         union=*)
 366                                 UNIONTYPE="${ARGUMENT#union=}"
 367                                 export UNIONTYPE
 368                                 ;;
 369                 esac
 370         done
 371
 372         # sort of compatibility with netboot.h from linux docs
 373         if [ -z "${NETBOOT}" ]
 374         then
 375                 if [ "${ROOT}" = "/dev/nfs" ]
 376                 then
 377                         NETBOOT="nfs"
 378                         export NETBOOT
 379                 elif [ "${ROOT}" = "/dev/cifs" ]
 380                 then
 381                         NETBOOT="cifs"
 382                         export NETBOOT
 383                 fi
 384         fi
 385
 386         if [ -z "${MODULE}" ]
 387         then
 388                 MODULE="filesystem"
 389                 export MODULE
 390         fi
 391
 392         if [ -z "${UNIONTYPE}" ]
 393         then
 394                 UNIONTYPE="aufs"
 395                 export UNIONTYPE
 396         fi
 397
 398         if [ "${PERSISTENT_ENCRYPTION}" = "luks" ]
 399         then
 400                 if ! modprobe dm-crypt
 401                 then
 402                         log_warning_msg "Unable to load module dm-crypt"
 403                         PERSISTENT_ENCRYPTION="none"
 404                         export PERSISTENT_ENCRYPTION
 405                 fi
 406
 407                 if [ ! -x /lib/cryptsetup/askpass ] || [ ! -x /sbin/cryptsetup ]
 408                 then
 409                         log_warning_msg "cryptsetup in unavailable"
 410                         PERSISTENT_ENCRYPTION="none"
 411                         export PERSISTENT_ENCRYPTION
 412                 fi
 413         fi
 414
 415         if [ -n "${PERSISTENT}" ] && [ -z "${PERSISTENT_METHOD}" ]
 416         then
 417                 PERSISTENT_METHOD="snapshot,overlay"
 418                 export PERSISTENT_METHOD
 419         fi
 420
 421         if [ -n "${PERSISTENT}" ] && [ -z "${PERSISTENT_STORAGE}" ]
 422         then
 423                 PERSISTENT_STORAGE="filesystem,file"
 424                 export PERSISTENT_STORAGE
 425         fi
 426 }
 427
 428 is_live_path ()
 429 {
 430         DIRECTORY="${1}"
 431
 432         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 433         then
 434                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 435                 do
 436                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 437                         then
 438                                 return 0
 439                         fi
 440                 done
 441         fi
 442
 443         return 1
 444 }
 445
 446 matches_uuid ()
 447 {
 448         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 449         then
 450                 return 0
 451         fi
 452
 453         path="${1}"
 454         uuid="$(cat /conf/uuid.conf)"
 455
 456         for try_uuid_file in "${path}/.disk/live-uuid"*
 457         do
 458                 [ -e "${try_uuid_file}" ] || continue
 459
 460                 try_uuid="$(cat "${try_uuid_file}")"
 461
 462                 if [ "${uuid}" = "${try_uuid}" ]
 463                 then
 464                         return 0
 465                 fi
 466         done
 467
 468         return 1
 469 }
 470
 471 get_backing_device ()
 472 {
 473         case "${1}" in
 474                 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 475                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 476                         ;;
 477
 478                 *.dir)
 479                         echo "directory"
 480                         ;;
 481
 482                 *)
 483                         panic "Unrecognized live filesystem: ${1}"
 484                         ;;
 485         esac
 486 }
 487
 488 match_files_in_dir ()
 489 {
 490         # Does any files match pattern ${1} ?
 491         local pattern="${1}"
 492
 493         if [ "$(echo ${pattern})" != "${pattern}" ]
 494         then
 495                 return 0
 496         fi
 497
 498         return 1
 499 }
 500
 501 mount_images_in_directory ()
 502 {
 503         directory="${1}"
 504         rootmnt="${2}"
 505         mac="${3}"
 506
 507
 508         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 509                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 510                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 511                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 512                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 513                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 514         then
 515                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 516                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 517         else
 518                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 519         fi
 520 }
 521
 522 is_nice_device ()
 523 {
 524         sysfs_path="${1#/sys}"
 525
 526         if [ -e /lib/udev/path_id ]
 527         then
 528                 # squeeze
 529                 PATH_ID="/lib/udev/path_id"
 530         else
 531                 # wheezy/sid (udev >= 174)
 532                 PATH_ID="/sbin/udevadm test-builtin path_id"
 533         fi
 534
 535         if "${PATH_ID}" "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-[^-]*-(ide|sas|scsi|usb|virtio)|platform-sata_mv|platform-orion-ehci|platform-mmc|platform-mxsdhci)"
 536         then
 537                 return 0
 538         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 539         then
 540                 return 0
 541         elif echo ${sysfs_path} | grep -q "^/block/dm-"
 542         then
 543                 return 0
 544         elif echo ${sysfs_path} | grep -q "^/block/mtdblock"
 545         then
 546                 return 0
 547         fi
 548
 549         return 1
 550 }
 551
 552 copy_live_to ()
 553 {
 554         copyfrom="${1}"
 555         copytodev="${2}"
 556         copyto="${copyfrom}_swap"
 557
 558         if [ -z "${MODULETORAM}" ]
 559         then
 560                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 561         else
 562                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 563
 564                 if [ -f "${MODULETORAMFILE}" ]
 565                 then
 566                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 567                 else
 568                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 569                         return 1
 570                 fi
 571         fi
 572
 573         if [ "${copytodev}" = "ram" ]
 574         then
 575                 # copying to ram:
 576                 freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 577                 mount_options="-o size=${size}k"
 578                 free_string="memory"
 579                 fstype="tmpfs"
 580                 dev="/dev/shm"
 581         else
 582                 # it should be a writable block device
 583                 if [ -b "${copytodev}" ]
 584                 then
 585                         dev="${copytodev}"
 586                         free_string="space"
 587                         fstype=$(get_fstype "${dev}")
 588                         freespace=$(fs_size "${dev}")
 589                 else
 590                         log_warning_msg "${copytodev} is not a block device."
 591                         return 1
 592                 fi
 593         fi
 594
 595         if [ "${freespace}" -lt "${size}" ]
 596         then
 597                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 598                 return 1
 599         fi
 600
 601         # Custom ramdisk size
 602         if [ -z "${mount_options}" ] && [ -n "${ramdisk_size}" ]
 603         then
 604                 # FIXME: should check for wrong values
 605                 mount_options="-o size=${ramdisk_size}"
 606         fi
 607
 608         # begin copying (or uncompressing)
 609         mkdir "${copyto}"
 610         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 611         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 612
 613         if [ "${extension}" = "tgz" ]
 614         then
 615                 cd "${copyto}"
 616                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 617                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 618                 mount -r -o move "${copyto}" "${rootmnt}"
 619                 cd "${OLDPWD}"
 620         else
 621                 if [ -n "${MODULETORAMFILE}" ]
 622                 then
 623                         if [ -x /bin/rsync ]
 624                         then
 625                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 626                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 627                         else
 628                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 629                         fi
 630                 else
 631                         if [ -x /bin/rsync ]
 632                         then
 633                                 echo " * Copying whole medium to RAM" 1>/dev/console
 634                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 635                         else
 636                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 637                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
 638                                 if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
 639                                 then
 640                                         cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
 641                                 fi
 642                         fi
 643                 fi
 644
 645                 umount ${copyfrom}
 646                 mount -r -o move ${copyto} ${copyfrom}
 647         fi
 648
 649         rmdir ${copyto}
 650         return 0
 651 }
 652
 653 do_netsetup ()
 654 {
 655         modprobe -q af_packet # For DHCP
 656
 657         udevadm trigger
 658         udevadm settle
 659
 660         [ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
 661         echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
 662
 663         if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && \
 664            [ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
 665         then
 666
 667
 668         # support for Syslinux IPAPPEND parameter
 669         # it sets the BOOTIF variable on the kernel parameter
 670
 671         if [ -n "${BOOTIF}" ]
 672         then
 673                 # pxelinux sets BOOTIF to a value based on the mac address of the
 674                 # network card used to PXE boot, so use this value for DEVICE rather
 675                 # than a hard-coded device name from initramfs.conf. this facilitates
 676                 # network booting when machines may have multiple network cards.
 677                 # pxelinux sets BOOTIF to 01-$mac_address
 678
 679                 # strip off the leading "01-", which isn't part of the mac
 680                 # address
 681                 temp_mac=${BOOTIF#*-}
 682
 683                 # convert to typical mac address format by replacing "-" with ":"
 684                 bootif_mac=""
 685                 IFS='-'
 686                 for x in $temp_mac
 687                 do
 688                         if [ -z "$bootif_mac" ]
 689                         then
 690                                 bootif_mac="$x"
 691                         else
 692                                 bootif_mac="$bootif_mac:$x"
 693                         fi
 694                 done
 695                 unset IFS
 696
 697                 # look for devices with matching mac address, and set DEVICE to
 698                 # appropriate value if match is found.
 699
 700                 for device in /sys/class/net/*
 701                 do
 702                         if [ -f "$device/address" ]
 703                         then
 704                                 current_mac=$(cat "$device/address")
 705
 706                                 if [ "$bootif_mac" = "$current_mac" ]
 707                                 then
 708                                         DEVICE=${device##*/}
 709                                         break
 710                                 fi
 711                         fi
 712                 done
 713         fi
 714
 715         # if ethdevice was not specified on the kernel command line
 716         # make sure we try to get a working network configuration
 717         # for *every* present network device (except for loopback of course)
 718         if [ -z "$ETHDEVICE" ] ; then
 719                 echo "If you want to boot from a specific device use bootoption ethdevice=..."
 720                 for device in /sys/class/net/*; do
 721                         dev=${device##*/} ;
 722                         if [ "$dev" != "lo" ] ; then
 723                                 ETHDEVICE="$ETHDEVICE $dev"
 724                         fi
 725                 done
 726         fi
 727
 728         # split args of ethdevice=eth0,eth1 into "eth0 eth1"
 729         for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
 730                 devlist="$devlist $device"
 731         done
 732
 733         # this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
 734         # an endless loop; iff execution fails give it two further tries, that's
 735         # why we use '$devlist $devlist $devlist' for the other for loop
 736         for dev in $devlist $devlist $devlist ; do
 737                 echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
 738                 ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
 739                 jobid=$!
 740                 sleep "$ETHDEV_TIMEOUT" ; sleep 1
 741                 if [ -r /proc/"$jobid"/status ] ; then
 742                         echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
 743                         kill -9 $jobid
 744                 fi
 745
 746                 # if configuration of device worked we should have an assigned
 747                 # IP address, iff so let's use the according as $DEVICE for later usage
 748                 # simple and primitive approach which seems to work fine
 749                 if ifconfig $dev | grep -q 'inet.*addr:' ; then
 750                         export DEVICE="$dev"
 751                         break
 752                 fi
 753         done
 754
 755         else
 756                 for interface in ${DEVICE}; do
 757                         ipconfig -t "$ETHDEV_TIMEOUT" ${interface} | tee /netboot-${interface}.config
 758                         [ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
 759                         if [ "$IPV4ADDR" != "0.0.0.0" ]
 760                         then
 761                                 break
 762                         fi
 763                 done
 764         fi
 765
 766         for interface in ${DEVICE}; do
 767                 # source relevant ipconfig output
 768                 OLDHOSTNAME=${HOSTNAME}
 769                 [ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
 770                 [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 771                 export HOSTNAME
 772
 773                 if [ -n "${interface}" ]
 774                 then
 775                         HWADDR="$(cat /sys/class/net/${interface}/address)"
 776                 fi
 777
 778                 if [ ! -e "/etc/resolv.conf" ]
 779                 then
 780                         echo "Creating /etc/resolv.conf"
 781
 782                         if [ -n "${DNSDOMAIN}" ]
 783                         then
 784                                 echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
 785                                 echo "search ${DNSDOMAIN}" >> /etc/resolv.conf
 786                         fi
 787
 788                         for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1}
 789                         do
 790                                 if [ -n "$i" ] && [ "$i" != 0.0.0.0 ]
 791                                 then
 792                                         echo "nameserver $i" >> /etc/resolv.conf
 793                                 fi
 794                         done
 795                 fi
 796
 797                 # Check if we have a network device at all
 798                 if ! ls /sys/class/net/"$interface" > /dev/null 2>&1 && \
 799                    ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 800                    ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 801                    ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 802                    ! ls /sys/class/net/ra0 > /dev/null 2>&1
 803                 then
 804                         panic "No supported network device found, maybe a non-mainline driver is required."
 805                 fi
 806         done
 807 }
 808
 809 do_netmount()
 810 {
 811         do_netsetup
 812
 813         if [ "${NFSROOT}" = "auto" ]
 814         then
 815                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 816         fi
 817
 818         rc=1
 819
 820         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] )
 821         then
 822                 do_httpmount
 823                 return $?
 824         fi
 825
 826         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 827         then
 828                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 829         fi
 830
 831         log_begin_msg "Trying netboot from ${NFSROOT}"
 832
 833         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 834         then
 835                 rc=0
 836         elif do_nfsmount
 837         then
 838                 NETBOOT="nfs"
 839                 export NETBOOT
 840                 rc=0
 841         fi
 842
 843         log_end_msg
 844         return ${rc}
 845 }
 846
 847 do_iscsi()
 848 {
 849         do_netsetup
 850         #modprobe ib_iser
 851         modprobe iscsi_tcp
 852         local debugopt=""
 853         [ "${DEBUG}" == "Yes" ] && debugopt="-d 8"
 854         #FIXME this name is supposed to be unique - some date + ifconfig hash?
 855         ISCSI_INITIATORNAME="iqn.1993-08.org.debian.live:01:$(echo "${HWADDR}" | sed -e s/://g)"
 856         export ISCSI_INITIATORNAME
 857         if [ -n "${ISCSI_SERVER}" ] ; then
 858                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_SERVER}" -p "${ISCSI_PORT}"
 859         else
 860                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_PORTAL}" -p 3260
 861         fi
 862         if [ $? != 0 ]
 863         then
 864                 panic "Failed to log into iscsi target"
 865         fi
 866         local host="$(ls -d /sys/class/scsi_host/host*/device/iscsi_host:host* \
 867                             /sys/class/scsi_host/host*/device/iscsi_host/host* | sed -e 's:/device.*::' -e 's:.*host::')"
 868         if [ -n "${host}" ]
 869         then
 870                 local devices=""
 871                 local i=0
 872                 while [ -z "${devices}" -a $i -lt 60 ]
 873                 do
 874                         sleep 1
 875                         devices="$(ls -d /sys/class/scsi_device/${host}*/device/block:* \
 876                                          /sys/class/scsi_device/${host}*/device/block/* | sed -e 's!.*[:/]!!')"
 877                         i=$(expr $i + 1)
 878                         echo -ne $i\\r
 879                 done
 880                 for dev in $devices
 881                 do
 882                         if check_dev "null" "/dev/$dev"
 883                         then
 884                                 NETBOOT="iscsi"
 885                                 export NETBOOT
 886                                 return 0;
 887                         fi
 888                 done
 889                 panic "Failed to locate a live device on iSCSI devices (tried: $devices)."
 890         else
 891                 panic "Failed to locate iSCSI host in /sys"
 892         fi
 893 }
 894
 895 do_httpmount ()
 896 {
 897         rc=1
 898
 899         for webfile in HTTPFS FTPFS FETCH
 900         do
 901                 local url="$(eval echo \"\$\{${webfile}\}\")"
 902                 local extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 903
 904                 if [ -n "$url" ]
 905                 then
 906                         case "${extension}" in
 907                                 iso|squashfs|tgz|tar)
 908                                         if [ "${extension}" = "iso" ]
 909                                         then
 910                                                 mkdir -p "${alt_mountpoint}"
 911                                                 dest="${alt_mountpoint}"
 912                                         else
 913                                                 local dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 914                                                 mount -t ramfs ram "${mountpoint}"
 915                                                 mkdir -p "${dest}"
 916                                         fi
 917                                         if [ "${webfile}" = "FETCH" ]
 918                                         then
 919                                                 case "$url" in
 920                                                         tftp*)
 921                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 922                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 923                                                                 lfile="$(basename $url)"
 924                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 925                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 926                                                         ;;
 927
 928                                                         *)
 929                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 930                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 931                                                                 ;;
 932                                                 esac
 933                                         else
 934                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 935                                                 if [ "${webfile}" = "FTPFS" ]
 936                                                 then
 937                                                         FUSE_MOUNT="curlftpfs"
 938                                                         url="$(dirname ${url})"
 939                                                 else
 940                                                         FUSE_MOUNT="httpfs"
 941                                                 fi
 942                                                 modprobe fuse
 943                                                 $FUSE_MOUNT "${url}" "${dest}"
 944                                                 ROOT_PID="$(minips h -C "$FUSE_MOUNT" | { read x y ; echo "$x" ; } )"
 945                                         fi
 946                                         [ ${?} -eq 0 ] && rc=0
 947                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 948                                         if [ "${extension}" = "iso" ]
 949                                         then
 950                                                 isoloop=$(setup_loop "${dest}/$(basename "${url}")" "loop" "/sys/block/loop*" "" '')
 951                                                 mount -t iso9660 "${isoloop}" "${mountpoint}"
 952                                                 rc=${?}
 953                                         fi
 954                                         break
 955                                         ;;
 956
 957                                 *)
 958                                         log_begin_msg "Unrecognized archive extension for ${url}"
 959                                         ;;
 960                         esac
 961                 fi
 962         done
 963
 964         if [ ${rc} != 0 ]
 965         then
 966                 if [ -d "${alt_mountpoint}" ]
 967                 then
 968                         umount "${alt_mountpoint}"
 969                         rmdir "${alt_mountpoint}"
 970                 fi
 971                 umount "${mountpoint}"
 972         elif [ "${webfile}"  != "FETCH" ] ; then
 973                 NETBOOT="${webfile}"
 974                 export NETBOOT
 975         fi
 976
 977         return ${rc}
 978 }
 979
 980 do_nfsmount ()
 981 {
 982         rc=1
 983
 984         modprobe -q nfs
 985
 986         if [ -z "${NFSOPTS}" ]
 987         then
 988                 NFSOPTS=""
 989         fi
 990
 991         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 992
 993         # FIXME: This while loop is an ugly HACK round an nfs bug
 994         i=0
 995         while [ "$i" -lt 60 ]
 996         do
 997                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 998                 sleep 1
 999                 i="$(($i + 1))"
1000         done
1001
1002         return ${rc}
1003 }
1004
1005 do_cifsmount ()
1006 {
1007         rc=1
1008
1009         if [ -x "/sbin/mount.cifs" ]
1010         then
1011                 if [ -z "${NFSOPTS}" ]
1012                 then
1013                         CIFSOPTS="-ouser=root,password="
1014                 else
1015                         CIFSOPTS="${NFSOPTS}"
1016                 fi
1017
1018                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
1019                 modprobe -q cifs
1020
1021                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
1022                 then
1023                         rc=0
1024                 fi
1025         fi
1026
1027         return ${rc}
1028 }
1029
1030 do_snap_copy ()
1031 {
1032         fromdev="${1}"
1033         todir="${2}"
1034         snap_type="${3}"
1035         size=$(fs_size "${fromdev}" "" "used")
1036
1037         if [ -b "${fromdev}" ]
1038         then
1039                 log_success_msg "Copying snapshot ${fromdev} to ${todir}..."
1040
1041                 # look for free mem
1042                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
1043                 then
1044                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
1045                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
1046                 else
1047                         freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
1048                 fi
1049
1050                 tomount="/mnt/tmpsnap"
1051
1052                 if [ ! -d "${tomount}" ]
1053                 then
1054                         mkdir -p "${tomount}"
1055                 fi
1056
1057                 fstype=$(get_fstype "${fromdev}")
1058
1059                 if [ -n "${fstype}" ]
1060                 then
1061                         # Copying stuff...
1062                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
1063                         cp -a "${tomount}"/* ${todir}
1064                         umount "${tomount}"
1065                 else
1066                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
1067                 fi
1068
1069                 rmdir "${tomount}"
1070
1071                 if echo ${fromdev} | grep -qs loop
1072                 then
1073                         losetup -d "${fromdev}"
1074                 fi
1075
1076                 return 0
1077         else
1078                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
1079                 return 1
1080         fi
1081 }
1082
1083 try_snap ()
1084 {
1085         # copy the contents of previously found snapshot to ${snap_mount}
1086         # and remember the device and filename for resync on exit in live-boot.init
1087
1088         snapdata="${1}"
1089         snap_mount="${2}"
1090         snap_type="${3}"
1091         snap_relpath="${4}"
1092
1093         if [ -z "${snap_relpath}" ]
1094         then
1095                 # root snapshot, default usage
1096                 snap_relpath="/"
1097         else
1098                 # relative snapshot (actually used just for "/home" snapshots)
1099                 snap_mount="${2}${snap_relpath}"
1100         fi
1101
1102         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
1103         then
1104                 log_success_msg "found snapshot: ${snapdata}"
1105                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
1106                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
1107                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
1108
1109                 if ! try_mount "${snapdev}" "${snapback}" "ro"
1110                 then
1111                         break
1112                 fi
1113
1114                 RES="0"
1115
1116                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
1117                 then
1118                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
1119                         dev=$(get_backing_device "${snapback}/${snapfile}")
1120
1121                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1122                         RES="$?"
1123                 else
1124                         # cpio.gz snapshot
1125
1126                         # Unfortunately klibc's cpio is incompatible with the
1127                         # rest of the world; everything else requires -u -d,
1128                         # while klibc doesn't implement them. Try to detect
1129                         # whether it's in use.
1130                         cpiopath="$(which cpio)" || true
1131                         if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
1132                         then
1133                                 cpioargs=
1134                         else
1135                                 cpioargs='--unconditional --make-directories'
1136                         fi
1137
1138                         if [ -s "${snapback}/${snapfile}" ]
1139                         then
1140                                 BEFOREDIR="$(pwd)"
1141                                 cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null
1142                                 RES="$?"
1143                                 cd "${BEFOREDIR}"
1144                         else
1145                                 log_warning_msg "${snapback}/${snapfile} is empty, adding it for sync on reboot."
1146                                 RES="0"
1147                         fi
1148
1149                         if [ "${RES}" != "0" ]
1150                         then
1151                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
1152                         fi
1153                 fi
1154
1155                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1156
1157                 if [ "${RES}" != "0" ]
1158                 then
1159                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1160                 fi
1161
1162         elif [ -b "${snapdata}" ]
1163         then
1164                 # Try to find if it could be a snapshot partition
1165                 dev="${snapdata}"
1166                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1167                 if echo "${dev}" | grep -qs loop
1168                 then
1169                         # strange things happens, user confused?
1170                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1171                         snapfile=$(basename ${snaploop})
1172                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1173                 else
1174                         snapdev="${dev}"
1175                 fi
1176
1177                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1178                 then
1179                         log_warning_msg "Impossible to include the ${snap_type} Snapshot (i)"
1180                         return 1
1181                 else
1182                         if [ -n "${snapfile}" ]
1183                         then
1184                                 # it was a loop device, user confused
1185                                 umount ${snapdev}
1186                         fi
1187                 fi
1188         else
1189                 log_warning_msg "Impossible to include the ${snap_type} Snapshot (o)"
1190                 return 1
1191         fi
1192
1193         if [ -z ${PERSISTENT_READONLY} ]
1194         then
1195                 echo "export ${snap_type}SNAP=${snap_relpath}:${snapdev}:${snapfile}" >> snapshot.conf # for resync on reboot/halt
1196         fi
1197         return 0
1198 }
1199
1200 setup_unionfs ()
1201 {
1202         image_directory="${1}"
1203         rootmnt="${2}"
1204         addimage_directory="${3}"
1205
1206         case ${UNIONTYPE} in
1207                 aufs|unionfs)
1208                         modprobe -q -b ${UNIONTYPE}
1209
1210                         if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
1211                         then
1212                                 echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
1213                                 echo "This might be really slow."
1214
1215                                 UNIONTYPE="unionfs-fuse"
1216                         fi
1217                         ;;
1218         esac
1219
1220         if [ "${UNIONTYPE}" = unionfs-fuse ]
1221         then
1222                 modprobe fuse
1223         fi
1224
1225         # run-init can't deal with images in a subdir, but we're going to
1226         # move all of these away before it runs anyway.  No, we're not,
1227         # put them in / since move-mounting them into / breaks mono and
1228         # some other apps.
1229
1230         croot="/"
1231
1232         # Let's just mount the read-only file systems first
1233         rofslist=""
1234
1235         if [ "${UNIONTYPE}" = "aufs" ]
1236         then
1237                 roopt="rr+wh"
1238                 noxino_opt="noxino,"
1239         elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
1240         then
1241                 roopt="RO"
1242         else
1243                 roopt="ro"
1244         fi
1245
1246         if [ -z "${PLAIN_ROOT}" ]
1247         then
1248                 # Read image names from ${MODULE}.module if it exists
1249                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1250                 then
1251                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1252                         do
1253                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1254                         done
1255                 elif [ -e "${image_directory}/${MODULE}.module" ]
1256                 then
1257                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1258                         do
1259                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1260                         done
1261                 else
1262                         # ${MODULE}.module does not exist, create a list of images
1263                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1264                         do
1265                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1266                                 do
1267                                         if [ -e "${IMAGE}" ]
1268                                         then
1269                                                 image_string="${image_string} ${IMAGE}"
1270                                         fi
1271                                 done
1272                         done
1273
1274                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1275                         then
1276                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1277                                 do
1278                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1279                                         do
1280                                                 if [ -e "${IMAGE}" ]
1281                                                 then
1282                                                         image_string="${image_string} ${IMAGE}"
1283                                                 fi
1284                                         done
1285                                 done
1286                         fi
1287
1288                         # Now sort the list
1289                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1290                 fi
1291
1292                 [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1293
1294                 mkdir -p "${croot}"
1295
1296                 for image in ${image_string}
1297                 do
1298                         imagename=$(basename "${image}")
1299
1300                         export image devname
1301                         maybe_break live-realpremount
1302                         log_begin_msg "Running /scripts/live-realpremount"
1303                         run_scripts /scripts/live-realpremount
1304                         log_end_msg
1305
1306                         if [ -d "${image}" ]
1307                         then
1308                                 # it is a plain directory: do nothing
1309                                 rofslist="${image} ${rofslist}"
1310                         elif [ -f "${image}" ]
1311                         then
1312                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1313                                 then
1314                                         backdev=$(get_backing_device "${image}" "-r")
1315                                 else
1316                                         backdev=$(get_backing_device "${image}")
1317                                 fi
1318                                 fstype=$(get_fstype "${backdev}")
1319
1320                                 if [ "${fstype}" = "unknown" ]
1321                                 then
1322                                         panic "Unknown file system type on ${backdev} (${image})"
1323                                 fi
1324
1325                                 if [ -z "${fstype}" ]
1326                                 then
1327                                         fstype="${imagename##*.}"
1328                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1329                                 fi
1330
1331                                 if [ "${UNIONTYPE}" != "unionmount" ]
1332                                 then
1333                                         mpoint="${croot}/${imagename}"
1334                                         rofslist="${mpoint} ${rofslist}"
1335                                 else
1336                                         mpoint="${rootmnt}"
1337                                         rofslist="${rootmnt} ${rofslist}"
1338                                 fi
1339                                 mkdir -p "${mpoint}"
1340                                 log_begin_msg "Mounting \"${image}\" on \"${mpoint}\" via \"${backdev}\""
1341                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${mpoint}" || panic "Can not mount ${backdev} (${image}) on ${mpoint}"
1342                                 log_end_msg
1343                         fi
1344                 done
1345         else
1346                 # we have a plain root system
1347                 mkdir -p "${croot}/filesystem"
1348                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1349                 mount -t $(get_fstype "${image_directory}") -o ro,noatime "${image_directory}" "${croot}/filesystem" || \
1350                         panic "Can not mount ${image_directory} on ${croot}/filesystem" && \
1351                         rofslist="${croot}/filesystem ${rofslist}"
1352                 # probably broken:
1353                 mount -o bind ${croot}/filesystem $mountpoint
1354                 log_end_msg
1355         fi
1356
1357         mkdir -p /cow
1358
1359         # Looking for "${root_persistence}" device or file
1360         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1361         then
1362
1363                 if [ -z "${QUICKUSBMODULES}" ]
1364                 then
1365                         # Load USB modules
1366                         num_block=$(ls -l /sys/block | wc -l)
1367                         for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1368                         do
1369                                 modprobe -q -b ${module}
1370                         done
1371
1372                         udevadm trigger
1373                         udevadm settle
1374
1375                         # For some reason, udevsettle does not block in this scenario,
1376                         # so we sleep for a little while.
1377                         #
1378                         # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1379                         for timeout in 5 4 3 2 1
1380                         do
1381                                 sleep 1
1382
1383                                 if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1384                                 then
1385                                         break
1386                                 fi
1387                         done
1388                 fi
1389
1390                 case "${PERSISTENT_MEDIA}" in
1391                         removable)
1392                                 whitelistdev="$(removable_dev)"
1393                                 ;;
1394                         removable-usb)
1395                                 whitelistdev="$(removable_usb_dev)"
1396                                 ;;
1397                         *)
1398                                 whitelistdev=""
1399                                 ;;
1400                 esac
1401
1402                 if echo ${PERSISTENT_METHOD} | grep -qw overlay
1403                 then
1404                         overlays="${root_persistence} ${home_persistence}"
1405                 fi
1406
1407                 if echo ${PERSISTENT_METHOD} | grep -qw snapshot
1408                 then
1409                         snapshots="${root_snapshot_label} ${home_snapshot_label}"
1410                 fi
1411
1412
1413                 for media in $(find_persistent_media "${overlays}" "${snapshots}" "${blacklistdev}" "${whitelistdev}")
1414                 do
1415                         media="$(echo ${media} | tr ":" " ")"
1416                         case ${media} in
1417                                 ${root_persistence}=*)
1418                                         cowprobe="${media#*=}"
1419                                         ;;
1420                                 ${home_persistence}=*)
1421                                         homecow="${media#*=}"
1422                                         ;;
1423                                 ${root_snapshot_label}=*)
1424                                         root_snapdata="${media#*=}"
1425                                         ;;
1426                                 ${home_snapshot_label}=*)
1427                                         # This second type should be removed when snapshot will get smarter,
1428                                         # hence when "/etc/live-snapshot*list" will be supported also by
1429                                         # ext2|ext3|ext4|jffs2 snapshot types.
1430                                         home_snapdata="${media#*=}"
1431                                         ;;
1432                                 *)
1433                                         ;;
1434                          esac
1435                 done
1436
1437                 if [ -b "${cowprobe}" ] || [ -b "${homecow}" ]
1438                 then
1439                         PERSISTENCE_IS_ON="1"
1440                         export PERSISTENCE_IS_ON
1441                 fi
1442
1443                 if [ -b "${cowprobe}" ]
1444                 then
1445                         cowdevice=${cowprobe}
1446                         cow_fstype=$(get_fstype "${cowprobe}")
1447                         cow_mountopt="rw,noatime"
1448
1449                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1450                         then
1451                                 fsck -y ${cowdevice}
1452                         fi
1453                 else
1454                         cowdevice="tmpfs"
1455                         cow_fstype="tmpfs"
1456                         cow_mountopt="rw,noatime,mode=755"
1457                 fi
1458         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1459         then
1460                 # check if there are any nfs options
1461                 if echo ${NFS_COW}|grep -q ','
1462                 then
1463                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1464                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1465                 else
1466                         nfs_cow_opts="-o nolock"
1467                         nfs_cow=${NFS_COW}
1468                 fi
1469                 mac="$(get_mac)"
1470                 if [ -n "${mac}" ]
1471                 then
1472                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1473                         cow_fstype="nfs"
1474                 else
1475                         panic "unable to determine mac address"
1476                 fi
1477         else
1478                 cowdevice="tmpfs"
1479                 cow_fstype="tmpfs"
1480                 cow_mountopt="rw,noatime,mode=755"
1481         fi
1482
1483         if [ "${UNIONTYPE}" != "unionmount" ]
1484         then
1485
1486                 if [ "${cow_fstype}" = "nfs" ]
1487                 then
1488                         log_begin_msg \
1489                                 "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1490                         nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1491                                 panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1492                 else
1493                         mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1494                                 panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1495                 fi
1496         fi
1497
1498         rofscount=$(echo ${rofslist} |wc -w)
1499
1500         if [ ${rofscount} -ne 1 ]
1501         then
1502                 panic "only one RO file system supported with exposedroot: ${rofslist}"
1503         fi
1504         rofs=${rofslist%% }
1505
1506         if [ -n "${EXPOSED_ROOT}" ]
1507         then
1508                 mount --bind ${rofs} ${rootmnt} || \
1509                         panic "bind mount of ${rofs} failed"
1510
1511                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1512                 then
1513                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1514                 else
1515                         cow_dirs=''
1516                 fi
1517         else
1518                 cow_dirs="/"
1519         fi
1520
1521         if [ "${cow_fstype}" != "tmpfs" ] && [ "${cow_dirs}" != "/" ] && [ "${UNIONTYPE}" = "unionmount" ]
1522         then
1523                 true # FIXME: Maybe it does, I don't really know.
1524                 #panic "unionmount does not support subunions (${cow_dirs})."
1525         fi
1526
1527         unionmountopts=""
1528         unionmountpoint=""
1529
1530         for dir in ${cow_dirs}; do
1531                 mkdir -p /cow${dir}
1532
1533                 unionmountpoint="${rootmnt}${dir}"
1534                 unionrw="/cow${dir}"
1535                 unionro="${rofs}${dir}"
1536                 # We don't handle spaces and other junk gracefully here, hopefully not needed.
1537                 case "${UNIONTYPE}" in
1538                         unionfs-fuse)
1539                                 unionmountopts="-o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid"
1540                                 unionmountopts="${unionmountopts} ${unionrw}=RW:${unionro}=RO"
1541                                 ( sysctl -w fs.file-max=391524 ; ulimit -HSn 16384
1542                                 unionfs-fuse ${unionmountopts} "${unionmountpoint}" ) && \
1543                                 ( mkdir -p /run/sendsigs.omit.d
1544                                 pidof unionfs-fuse >> /run/sendsigs.omit.d/unionfs-fuse || true )
1545                                 ;;
1546
1547                         unionmount)
1548                                 unionmountopts="-t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice}"
1549                                 mount_full $unionmountopts "${unionmountpoint}"
1550                                 ;;
1551
1552
1553                         *)
1554                                 unionmountopts="-o noatime,${noxino_opt}dirs=${unionrw}=rw:${unionro}=${roopt}"
1555                                 mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
1556                                 ;;
1557                 esac || \
1558                         panic "mount ${UNIONTYPE} on ${unionmountpoint} failed with option ${unionmountopts}"
1559         done
1560
1561         # Correct the permissions of /:
1562         chmod 0755 "${rootmnt}"
1563
1564         # tmpfs file systems
1565         touch /etc/fstab
1566         mkdir -p "${rootmnt}/live"
1567         mount -t tmpfs tmpfs ${rootmnt}/live
1568
1569         # Adding other custom mounts
1570         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1571         then
1572                 # directly mount /home
1573                 # FIXME: add a custom mounts configurable system
1574
1575                 if [ -b "${homecow}" ]
1576                 then
1577                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1578                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1579                 else
1580                         log_warning_msg "Unable to find the persistent home medium"
1581                 fi
1582
1583                 # Look for other snapshots to copy in
1584                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1585                 # This second type should be removed when snapshot grow smarter
1586                 try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home"
1587         fi
1588
1589         if [ -n "${SHOWMOUNTS}" ]
1590         then
1591                 for d in ${rofslist}
1592                 do
1593                         mkdir -p "${rootmnt}/live/${d##*/}"
1594
1595                         case d in
1596                                 *.dir)
1597                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1598                                         ;;
1599
1600                                 *)
1601                                         case "${UNIONTYPE}" in
1602                                                 unionfs-fuse)
1603                                                         mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1604                                                         ;;
1605
1606                                                 *)
1607                                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1608                                                         ;;
1609                                         esac
1610                                         ;;
1611                         esac
1612                 done
1613         fi
1614
1615         # shows cow fs on /cow for use by live-snapshot
1616         mkdir -p "${rootmnt}/live/cow"
1617         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 ${rootmnt}/live/cow"
1618 }
1619
1620 check_dev ()
1621 {
1622         sysdev="${1}"
1623         devname="${2}"
1624         skip_uuid_check="${3}"
1625
1626         # support for fromiso=.../isofrom=....
1627         if [ -n "$FROMISO" ]
1628         then
1629                 ISO_DEVICE=$(dirname $FROMISO)
1630                 if ! [ -b $ISO_DEVICE ]
1631                 then
1632                         # to support unusual device names like /dev/cciss/c0d0p1
1633                         # as well we have to identify the block device name, let's
1634                         # do that for up to 15 levels
1635                         i=15
1636                         while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
1637                         do
1638                                 ISO_DEVICE=$(dirname ${ISO_DEVICE})
1639                                 [ -b "$ISO_DEVICE" ] && break
1640                                 i=$(($i -1))
1641                         done
1642                 fi
1643
1644                 if [ "$ISO_DEVICE" = "/" ]
1645                 then
1646                         echo "Warning: device for bootoption isofrom= ($FROMISO) not found.">>/live-boot.log
1647                 else
1648                         fs_type=$(get_fstype "${ISO_DEVICE}")
1649                         if is_supported_fs ${fs_type}
1650                         then
1651                                 mkdir /isofrom
1652                                 mount -t $fs_type "$ISO_DEVICE" /isofrom
1653                                 ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
1654                                 loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1655                                 devname="${loopdevname}"
1656                         else
1657                                 echo "Warning: unable to mount $ISO_DEVICE." >>/live-boot.log
1658                         fi
1659                 fi
1660         fi
1661
1662         if [ -z "${devname}" ]
1663         then
1664                 devname=$(sys2dev "${sysdev}")
1665         fi
1666
1667         if [ -d "${devname}" ]
1668         then
1669                 mount -o bind "${devname}" $mountpoint || continue
1670
1671                 if is_live_path $mountpoint
1672                 then
1673                         echo $mountpoint
1674                         return 0
1675                 else
1676                         umount $mountpoint
1677                 fi
1678         fi
1679
1680         IFS=","
1681         for device in ${devname}
1682         do
1683                 case "$device" in
1684                         *mapper*)
1685                                 # Adding lvm support
1686                                 if [ -x /scripts/local-top/lvm2 ]
1687                                 then
1688                                         ROOT="$device" resume="" /scripts/local-top/lvm2
1689                                 fi
1690                                 ;;
1691
1692                         /dev/md*)
1693                                 # Adding raid support
1694                                 if [ -x /scripts/local-top/mdadm ]
1695                                 then
1696                                         cp /conf/conf.d/md /conf/conf.d/md.orig
1697                                         echo "MD_DEVS=$device " >> /conf/conf.d/md
1698                                         /scripts/local-top/mdadm
1699                                         mv /conf/conf.d/md.orig /conf/conf.d/md
1700                                 fi
1701                                 ;;
1702                 esac
1703         done
1704         unset IFS
1705
1706         [ -n "$device" ] && devname="$device"
1707
1708         [ -e "$devname" ] || continue
1709
1710         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1711         then
1712                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1713                 devname="${loopdevname}"
1714         fi
1715
1716         fstype=$(get_fstype "${devname}")
1717
1718         if is_supported_fs ${fstype}
1719         then
1720                 devuid=$(blkid -o value -s UUID "$devname")
1721                 [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
1722                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1723                 [ -n "$devuid" ] && echo "$devuid" >> $tried
1724
1725                 if is_live_path ${mountpoint} && \
1726                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1727                 then
1728                         echo ${mountpoint}
1729                         return 0
1730                 else
1731                         umount ${mountpoint} 2>/dev/null
1732                 fi
1733         fi
1734
1735         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1736         then
1737                 losetup -d "${loopdevname}"
1738         fi
1739
1740         return 1
1741 }
1742
1743 find_livefs ()
1744 {
1745         timeout="${1}"
1746
1747         # don't start autodetection before timeout has expired
1748         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1749         then
1750                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1751                 then
1752                         return 1
1753                 fi
1754         fi
1755
1756         # first look at the one specified in the command line
1757         case "${LIVE_MEDIA}" in
1758                 removable-usb)
1759                         for sysblock in $(removable_usb_dev "sys")
1760                         do
1761                                 for dev in $(subdevices "${sysblock}")
1762                                 do
1763                                         if check_dev "${dev}"
1764                                         then
1765                                                 return 0
1766                                         fi
1767                                 done
1768                         done
1769                         return 1
1770                         ;;
1771
1772                 removable)
1773                         for sysblock in $(removable_dev "sys")
1774                         do
1775                                 for dev in $(subdevices "${sysblock}")
1776                                 do
1777                                         if check_dev "${dev}"
1778                                         then
1779                                                 return 0
1780                                         fi
1781                                 done
1782                         done
1783                         return 1
1784                         ;;
1785
1786                 *)
1787                         if [ ! -z "${LIVE_MEDIA}" ]
1788                         then
1789                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1790                                 then
1791                                         return 0
1792                                 fi
1793                         fi
1794                         ;;
1795         esac
1796
1797         # or do the scan of block devices
1798         # prefer removable devices over non-removable devices, so scan them first
1799         devices_to_scan="$(removable_dev 'sys') $(non_removable_dev 'sys')"
1800
1801         for sysblock in $devices_to_scan
1802         do
1803                 devname=$(sys2dev "${sysblock}")
1804                 [ -e "$devname" ] || continue
1805                 fstype=$(get_fstype "${devname}")
1806
1807                 if /lib/udev/cdrom_id ${devname} > /dev/null
1808                 then
1809                         if check_dev "null" "${devname}"
1810                         then
1811                                 return 0
1812                         fi
1813                 elif is_nice_device "${sysblock}"
1814                 then
1815                         for dev in $(subdevices "${sysblock}")
1816                         do
1817                                 if check_dev "${dev}"
1818                                 then
1819                                         return 0
1820                                 fi
1821                         done
1822                 elif [ "${fstype}" = "squashfs" -o \
1823                         "${fstype}" = "btrfs" -o \
1824                         "${fstype}" = "ext2" -o \
1825                         "${fstype}" = "ext3" -o \
1826                         "${fstype}" = "ext4" -o \
1827                         "${fstype}" = "jffs2" ]
1828                 then
1829                         # This is an ugly hack situation, the block device has
1830                         # an image directly on it.  It's hopefully
1831                         # live-boot, so take it and run with it.
1832                         ln -s "${devname}" "${devname}.${fstype}"
1833                         echo "${devname}.${fstype}"
1834                         return 0
1835                 fi
1836         done
1837
1838         return 1
1839 }
1840
1841 integrity_check ()
1842 {
1843         media_mountpoint="${1}"
1844
1845         log_begin_msg "Checking media integrity"
1846
1847         cd ${media_mountpoint}
1848         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1849         RC="${?}"
1850
1851         log_end_msg
1852
1853         if [ "${RC}" -eq 0 ]
1854         then
1855                 log_success_msg "Everything ok, will reboot in 10 seconds."
1856                 sleep 10
1857                 cd /
1858                 umount ${media_mountpoint}
1859                 sync
1860                 echo u > /proc/sysrq-trigger
1861                 echo b > /proc/sysrq-trigger
1862         else
1863                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1864         fi
1865 }
1866
1867 mountroot ()
1868 {
1869         if [ -x /scripts/local-top/cryptroot ]; then
1870             /scripts/local-top/cryptroot
1871         fi
1872
1873         exec 6>&1
1874         exec 7>&2
1875         exec > live-boot.log
1876         exec 2>&1
1877         tail -f live-boot.log >&7 &
1878         tailpid="${!}"
1879
1880         # Ensure 'panic' function is overridden
1881         . /scripts/live-functions
1882
1883         Arguments
1884
1885         maybe_break live-premount
1886         log_begin_msg "Running /scripts/live-premount"
1887         run_scripts /scripts/live-premount
1888         log_end_msg
1889
1890         # Needed here too because some things (*cough* udev *cough*)
1891         # changes the timeout
1892
1893         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1894         then
1895                 if do_netmount
1896                 then
1897                         livefs_root="${mountpoint}"
1898                 else
1899                         panic "Unable to find a live file system on the network"
1900                 fi
1901         else
1902                 if [ -n "${ISCSI_PORTAL}" ]
1903                 then
1904                         do_iscsi && livefs_root="${mountpoint}"
1905                 elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1906                 then
1907                         # Do a local boot from hd
1908                         livefs_root=${ROOT}
1909                 else
1910                         if [ -x /usr/bin/memdiskfind ]
1911                         then
1912                                 MEMDISK=$(/usr/bin/memdiskfind)
1913
1914                                 if [ $? -eq 0 ]
1915                                 then
1916                                         # We found a memdisk, set up phram
1917                                         modprobe phram phram=memdisk,${MEMDISK}
1918
1919                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
1920                                         modprobe mtdblock
1921                                 fi
1922                         fi
1923
1924                         # Scan local devices for the image
1925                         i=0
1926                         while [ "$i" -lt 60 ]
1927                         do
1928                                 livefs_root=$(find_livefs ${i})
1929
1930                                 if [ -n "${livefs_root}" ]
1931                                 then
1932                                         break
1933                                 fi
1934
1935                                 sleep 1
1936                                 i="$(($i + 1))"
1937                         done
1938                 fi
1939         fi
1940
1941         if [ -z "${livefs_root}" ]
1942         then
1943                 panic "Unable to find a medium containing a live file system"
1944         fi
1945
1946         if [ "${INTEGRITY_CHECK}" ]
1947         then
1948                 integrity_check "${livefs_root}"
1949         fi
1950
1951         if [ "${TORAM}" ]
1952         then
1953                 live_dest="ram"
1954         elif [ "${TODISK}" ]
1955         then
1956                 live_dest="${TODISK}"
1957         fi
1958
1959         if [ "${live_dest}" ]
1960         then
1961                 log_begin_msg "Copying live media to ${live_dest}"
1962                 copy_live_to "${livefs_root}" "${live_dest}"
1963                 log_end_msg
1964         fi
1965
1966         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1967         # because the mountpoint is left behind in /proc/mounts, so let's get
1968         # rid of it when running from RAM
1969         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1970         then
1971           losetup -d /dev/loop0
1972           grep -q /isofrom /proc/mounts && umount /isofrom
1973         fi
1974
1975         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1976         then
1977                 setup_unionfs "${livefs_root}" "${rootmnt}"
1978         else
1979                 mac="$(get_mac)"
1980                 mac="$(echo ${mac} | sed 's/-//g')"
1981                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1982         fi
1983
1984
1985         if [ -n "${ROOT_PID}" ] ; then
1986                 echo "${ROOT_PID}" > "${rootmnt}"/live/root.pid
1987         fi
1988
1989         log_end_msg
1990
1991         # unionfs-fuse needs /dev to be bind-mounted for the duration of
1992         # live-bottom; udev's init script will take care of things after that
1993         if [ "${UNIONTYPE}" = unionfs-fuse ]
1994         then
1995                 mount -n -o bind /dev "${rootmnt}/dev"
1996         fi
1997
1998         # Move to the new root filesystem so that programs there can get at it.
1999         if [ ! -d /root/live/image ]
2000         then
2001                 mkdir -p /root/live/image
2002                 mount --move /live/image /root/live/image
2003         fi
2004
2005         # aufs2 in kernel versions around 2.6.33 has a regression:
2006         # directories can't be accessed when read for the first the time,
2007         # causing a failure for example when accessing /var/lib/fai
2008         # when booting FAI, this simple workaround solves it
2009         ls /root/* >/dev/null 2>&1
2010
2011         # copy snapshot configuration if exists
2012         if [ -f snapshot.conf ]
2013         then
2014                 log_begin_msg "Copying snapshot.conf to ${rootmnt}/etc/live/boot.d"
2015                 if [ ! -d "${rootmnt}/etc/live/boot.d" ]
2016                 then
2017                         mkdir -p "${rootmnt}/etc/live/boot.d"
2018                 fi
2019                 cp snapshot.conf "${rootmnt}/etc/live/boot.d/"
2020                 log_end_msg
2021         fi
2022
2023         if [ -f /etc/resolv.conf ] && [ ! -s ${rootmnt}/etc/resolv.conf ]
2024         then
2025                 log_begin_msg "Copying /etc/resolv.conf to ${rootmnt}/etc/resolv.conf"
2026                 cp -v /etc/resolv.conf ${rootmnt}/etc/resolv.conf
2027                 log_end_msg
2028         fi
2029
2030         maybe_break live-bottom
2031         log_begin_msg "Running /scripts/live-bottom\n"
2032
2033         run_scripts /scripts/live-bottom
2034         log_end_msg
2035
2036         if [ "${UNIONFS}" = unionfs-fuse ]
2037         then
2038                 umount "${rootmnt}/dev"
2039         fi
2040
2041         exec 1>&6 6>&-
2042         exec 2>&7 7>&-
2043         kill ${tailpid}
2044         [ -w "${rootmnt}/var/log/" ] && cp live-boot.log "${rootmnt}/var/log/" 2>/dev/null
2045 }