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 LIVE_MEDIA_PATH="live"
  12
  13 root_persistence="live-rw"
  14 home_persistence="home-rw"
  15 root_snapshot_label="live-sn"
  16 home_snapshot_label="home-sn"
  17
  18 USERNAME="user"
  19 USERFULLNAME="Live user"
  20 HOSTNAME="host"
  21
  22 mkdir -p "${mountpoint}"
  23
  24 # Create /etc/mtab for debug purpose and future syncs
  25 if [ ! -d /etc ]
  26 then
  27         mkdir /etc/
  28 fi
  29
  30 if [ ! -f /etc/mtab ]
  31 then
  32         touch /etc/mtab
  33 fi
  34
  35 [ -f /etc/live.conf ] && . /etc/live.conf
  36 export USERNAME USERFULLNAME HOSTNAME
  37
  38 . /scripts/live-helpers
  39
  40 if [ ! -f /live.vars ]
  41 then
  42         touch /live.vars
  43 fi
  44
  45 Arguments ()
  46 {
  47         PRESEEDS=""
  48
  49         for ARGUMENT in $(cat /proc/cmdline)
  50         do
  51                 case "${ARGUMENT}" in
  52                         access=*)
  53                                 ACCESS="${ARGUMENT#access=}"
  54                                 export ACCESS
  55                                 ;;
  56
  57                         console=*)
  58                                 DEFCONSOLE="${ARGUMENT#*=}"
  59                                 export DEFCONSOLE
  60                                 ;;
  61
  62                         debug)
  63                                 DEBUG="Yes"
  64                                 export DEBUG
  65
  66                                 set -x
  67                                 ;;
  68
  69                         fetch=*)
  70                                 FETCH="${ARGUMENT#fetch=}"
  71                                 export FETCH
  72                                 ;;
  73
  74                         hook=*)
  75                                 HOOK="${ARGUMENT#hook=}"
  76                                 export HOOK
  77                                 ;;
  78
  79                         ftpfs=*)
  80                                 FTPFS="${ARGUMENT#ftpfs=}"
  81                                 export FTPFS
  82                                 ;;
  83
  84                         httpfs=*)
  85                                 HTTPFS="${ARGUMENT#httpfs=}"
  86                                 export HTTPFS
  87                                 ;;
  88
  89                         hostname=*)
  90                                 HOSTNAME="${ARGUMENT#hostname=}"
  91                                 LIVECONF="changed"
  92                                 export HOSTNAME LIVECONF
  93                                 ;;
  94
  95                         username=*)
  96                                 USERNAME="${ARGUMENT#username=}"
  97                                 LIVECONF="changed"
  98                                 export USERNAME LIVECONF
  99                                 ;;
 100
 101                         userfullname=*)
 102                                 USERFULLNAME="${ARGUMENT#userfullname=}"
 103                                 LIVECONF="changed"
 104                                 export USERFULLNAME LIVECONF
 105                                 ;;
 106
 107                         ignore_uuid)
 108                                 IGNORE_UUID="Yes"
 109                                 export IGNORE_UUID
 110                                 ;;
 111
 112                         integrity-check)
 113                                 INTEGRITY_CHECK="Yes"
 114                                 export INTEGRITY_CHECK
 115                                 ;;
 116
 117                         ip=*)
 118                                 STATICIP="${ARGUMENT#ip=}"
 119
 120                                 if [ -z "${STATICIP}" ]
 121                                 then
 122                                         STATICIP="frommedia"
 123                                 fi
 124
 125                                 export STATICIP
 126                                 ;;
 127
 128                         keyb=*|kbd-chooser/method=*)
 129                                 KBD="${ARGUMENT#*=}"
 130                                 export KBD
 131                                 ;;
 132
 133                         klayout=*|console-setup/layoutcode=*)
 134                                 KLAYOUT="${ARGUMENT#*=}"
 135                                 export KLAYOUT
 136                                 ;;
 137
 138                         kvariant=*|console-setup/variantcode=*)
 139                                 KVARIANT="${ARGUMENT#*=}"
 140                                 export KVARIANT
 141                                 ;;
 142
 143                         kmodel=*|console-setup/modelcode=*)
 144                                 KMODEL="${ARGUMENT#*=}"
 145                                 export KMODEL
 146                                 ;;
 147
 148                         koptions=*)
 149                                 KOPTIONS="${ARGUMENT#koptions=}"
 150                                 export KOPTIONS
 151                                 ;;
 152
 153                         live-getty)
 154                                 LIVE_GETTY="1"
 155                                 export LIVE_GETTY
 156                                 ;;
 157
 158                         live-media=*|bootfrom=*)
 159                                 LIVE_MEDIA="${ARGUMENT#*=}"
 160                                 export LIVE_MEDIA
 161                                 ;;
 162
 163                         live-media-encryption=*|encryption=*)
 164                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 165                                 export LIVE_MEDIA_ENCRYPTION
 166                                 ;;
 167
 168                         live-media-offset=*)
 169                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 170                                 export LIVE_MEDIA_OFFSET
 171                                 ;;
 172
 173                         live-media-path=*)
 174                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 175                                 export LIVE_MEDIA_PATH
 176                                 ;;
 177
 178                         live-media-timeout=*)
 179                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 180                                 export LIVE_MEDIA_TIMEOUT
 181                                 ;;
 182
 183                         language=*|debian-installer/language=*)
 184                                 language=${x#debian-installer/language=}
 185                                 locale="$(lang2locale "$language")"
 186                                 set_locale="true"
 187                                 ;;
 188
 189                         locale=*|debian-installer/locale=*)
 190                                 LOCALE="${ARGUMENT#*=}"
 191                                 export LOCALE
 192                                 ;;
 193
 194                         module=*)
 195                                 MODULE="${ARGUMENT#module=}"
 196                                 export MODULE
 197                                 ;;
 198
 199                         netboot=*)
 200                                 NETBOOT="${ARGUMENT#netboot=}"
 201                                 export NETBOOT
 202                                 ;;
 203
 204                         nfsopts=*)
 205                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 206                                 export NFSOPTS
 207                                 ;;
 208
 209                         nfscow=*)
 210                                 NFS_COW="${ARGUMENT#nfscow=}"
 211                                 export NFS_COW
 212                                 ;;
 213
 214                         noaccessibility)
 215                                 NOACCESSIBILITY="Yes"
 216                                 export NOACCESSIBILITY
 217                                 ;;
 218
 219                         noapparmor)
 220                                 NOAPPARMOR="Yes"
 221                                 export NOAPPARMOR
 222                                 ;;
 223
 224                         noaptcdrom)
 225                                 NOAPTCDROM="Yes"
 226                                 export NOAPTCDROM
 227                                 ;;
 228
 229                         noautologin)
 230                                 NOAUTOLOGIN="Yes"
 231                                 export NOAUTOLOGIN
 232                                 ;;
 233
 234                         noxautologin)
 235                                 NOXAUTOLOGIN="Yes"
 236                                 export NOXAUTOLOGIN
 237                                 ;;
 238
 239                         noconsolekeyboard)
 240                                 NOCONSOLEKEYBOARD="Yes"
 241                                 export NOCONSOLEKEYBOARD
 242                                 ;;
 243
 244                         nofastboot)
 245                                 NOFASTBOOT="Yes"
 246                                 export NOFASTBOOT
 247                                 ;;
 248
 249                         nofstab)
 250                                 NOFSTAB="Yes"
 251                                 export NOFSTAB
 252                                 ;;
 253
 254                         nognomepanel)
 255                                 NOGNOMEPANEL="Yes"
 256                                 export NOGNOMEPANEL
 257                                 ;;
 258
 259                         nohosts)
 260                                 NOHOSTS="Yes"
 261                                 export NOHOSTS
 262                                 ;;
 263
 264                         nokpersonalizer)
 265                                 NOKPERSONALIZER="Yes"
 266                                 export NOKPERSONALIZER
 267                                 ;;
 268
 269                         nolanguageselector)
 270                                 NOLANGUAGESELECTOR="Yes"
 271                                 export NOLANGUAGESELECTOR
 272                                 ;;
 273
 274                         nolocales)
 275                                 NOLOCALES="Yes"
 276                                 export NOLOCALES
 277                                 ;;
 278
 279                         nonetworking)
 280                                 NONETWORKING="Yes"
 281                                 export NONETWORKING
 282                                 ;;
 283
 284                         nopowermanagement)
 285                                 NOPOWERMANAGEMENT="Yes"
 286                                 export NOPOWERMANAGEMENT
 287                                 ;;
 288
 289                         noprogramcrashes)
 290                                 NOPROGRAMCRASHES="Yes"
 291                                 export NOPROGRAMCRASHES
 292                                 ;;
 293
 294                         nojockey)
 295                                 NOJOCKEY="Yes"
 296                                 export NOJOCKEY
 297                                 ;;
 298
 299                         nosudo)
 300                                 NOSUDO="Yes"
 301                                 export NOSUDO
 302                                 ;;
 303
 304                         swapon)
 305                                 SWAPON="Yes"
 306                                 export SWAPON
 307                                 ;;
 308
 309                         noupdatenotifier)
 310                                 NOUPDATENOTIFIER="Yes"
 311                                 export NOUPDATENOTIFIER
 312                                 ;;
 313
 314                         nouser)
 315                                 NOUSER="Yes"
 316                                 export NOUSER
 317                                 ;;
 318
 319                         noxautoconfig)
 320                                 NOXAUTOCONFIG="Yes"
 321                                 export NOXAUTOCONFIG
 322                                 ;;
 323
 324                         noxscreensaver)
 325                                 NOXSCREENSAVER="Yes"
 326                                 export NOXSCREENSAVER
 327                                 ;;
 328
 329                         persistent)
 330                                 PERSISTENT="Yes"
 331                                 export PERSISTENT
 332                                 ;;
 333
 334                         persistent=*)
 335                                 PERSISTENT="${ARGUMENT#persistent=}"
 336                                 if [ -z "${PERSISTENT}" ]
 337                                 then
 338                                         PERSISTENT="Yes"
 339                                 fi
 340                                 export PERSISTENT
 341                                 ;;
 342
 343                         nopersistent)
 344                                 NOPERSISTENT="Yes"
 345                                 export NOPERSISTENT
 346                                 ;;
 347
 348                         preseed/file=*|file=*)
 349                                 LOCATION="${ARGUMENT#*=}"
 350                                 export LOCATION
 351                                 ;;
 352
 353                         nopreseed)
 354                                 NOPRESEED="Yes"
 355                                 export NOPRESEED
 356                                 ;;
 357
 358                         url=*)
 359                                 location="${ARGUMENT#url=}"
 360
 361                                 mount -o bind /sys /root/sys
 362                                 mount -o bind /proc /root/proc
 363                                 mount -o bind /dev /root/dev
 364
 365                                 mkdir -p /root/var/run/network
 366                                 chroot /root dhclient eth0
 367                                 chroot /root wget -P /tmp "${location}"
 368                                 chroot /root ifconfig eth0 down
 369
 370                                 umount /root/sys
 371                                 umount /root/proc
 372                                 umount /root/dev
 373
 374                                 LOCATION="/tmp/$(basename "${location}")"
 375                                 ;;
 376
 377                         */*=*)
 378                                 question="${ARGUMENT%%=*}"
 379                                 value="${ARGUMENT#*=}"
 380                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 381                                 export PRESEEDS
 382                                 ;;
 383
 384                         showmounts)
 385                                 SHOWMOUNTS="Yes"
 386                                 export SHOWMOUNTS
 387                                 ;;
 388
 389                         textonly)
 390                                 TEXTONLY="Yes"
 391                                 export TEXTONLY
 392                                 ;;
 393
 394                         timezone=*)
 395                                 TIMEZONE="${ARGUMENT#timezone=}"
 396                                 export TIMEZONE
 397                                 ;;
 398
 399                         notimezone)
 400                                 NOTIMEZONE="Yes"
 401                                 export NOTIMEZONE
 402                                 ;;
 403
 404                         todisk=*)
 405                                 TODISK="${ARGUMENT#todisk=}"
 406                                 export TODISK
 407                                 ;;
 408
 409                         toram)
 410                                 TORAM="Yes"
 411                                 export TORAM
 412                                 ;;
 413
 414                         toram=*)
 415                                 TORAM="Yes"
 416                                 MODULETORAM="${ARGUMENT#toram=}"
 417                                 export TORAM MODULETORAM
 418                                 ;;
 419
 420                         exposedroot)
 421                                 EXPOSED_ROOT="Yes"
 422                                 export EXPOSED_ROOT
 423                                 ;;
 424
 425                         plainroot)
 426                                 PLAIN_ROOT="Yes"
 427                                 export PLAIN_ROOT
 428                                 ;;
 429
 430                         skipunion)
 431                                 SKIP_UNION_MOUNTS="Yes"
 432                                 export SKIP_UNION_MOUNTS
 433                                 ;;
 434
 435                         root=*)
 436                                 ROOT="${ARGUMENT#root=}"
 437                                 export ROOT
 438                                 ;;
 439
 440                         union=*)
 441                                 UNIONTYPE="${ARGUMENT#union=}"
 442                                 export UNIONTYPE
 443                                 ;;
 444
 445                         utc=*)
 446                                 UTC="${ARGUMENT#utc=}"
 447                                 export UTC
 448                                 ;;
 449
 450                         xdebconf)
 451                                 XDEBCONF="Yes"
 452                                 export XDEBCONF
 453                                 ;;
 454
 455                         xdriver=*)
 456                                 XDRIVER="${ARGUMENT#xdriver=}"
 457                                 export XDRIVER
 458                                 ;;
 459
 460                         xvideomode=*)
 461                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 462                                 export XVIDEOMODE
 463                                 ;;
 464                 esac
 465         done
 466
 467         # sort of compatibility with netboot.h from linux docs
 468         if [ -z "${NETBOOT}" ]
 469         then
 470                 if [ "${ROOT}" = "/dev/nfs" ]
 471                 then
 472                         NETBOOT="nfs"
 473                         export NETBOOT
 474                 elif [ "${ROOT}" = "/dev/cifs" ]
 475                 then
 476                         NETBOOT="cifs"
 477                         export NETBOOT
 478                 fi
 479         fi
 480
 481         if [ -z "${MODULE}" ]
 482         then
 483                 MODULE="filesystem"
 484                 export MODULE
 485         fi
 486
 487         if [ -z "${UNIONTYPE}" ]
 488         then
 489                 UNIONTYPE="aufs"
 490                 export UNIONTYPE
 491         fi
 492 }
 493
 494 is_live_path ()
 495 {
 496         DIRECTORY="${1}"
 497
 498         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 499         then
 500                 for FILESYSTEM in squashfs ext2 ext3 xfs dir jffs2
 501                 do
 502                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 503                         then
 504                                 return 0
 505                         fi
 506                 done
 507         fi
 508
 509         return 1
 510 }
 511
 512 matches_uuid ()
 513 {
 514         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 515         then
 516                 return 0
 517         fi
 518
 519         path="${1}"
 520         uuid="$(cat /conf/uuid.conf)"
 521
 522         for try_uuid_file in "${path}/.disk/live-uuid"*
 523         do
 524                 [ -e "${try_uuid_file}" ] || continue
 525
 526                 try_uuid="$(cat "${try_uuid_file}")"
 527
 528                 if [ "${uuid}" = "${try_uuid}" ]
 529                 then
 530                         return 0
 531                 fi
 532         done
 533
 534         return 1
 535 }
 536
 537 get_backing_device ()
 538 {
 539         case "${1}" in
 540                 *.squashfs|*.ext2|*.ext3|*.jffs2)
 541                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 542                         ;;
 543
 544                 *.dir)
 545                         echo "directory"
 546                         ;;
 547
 548                 *)
 549                         panic "Unrecognized live filesystem: ${1}"
 550                         ;;
 551         esac
 552 }
 553
 554 match_files_in_dir ()
 555 {
 556         # Does any files match pattern ${1} ?
 557         local pattern="${1}"
 558
 559         if [ "$(echo ${pattern})" != "${pattern}" ]
 560         then
 561                 return 0
 562         fi
 563
 564         return 1
 565 }
 566
 567 mount_images_in_directory ()
 568 {
 569         directory="${1}"
 570         rootmnt="${2}"
 571         mac="${3}"
 572
 573
 574         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 575                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 576                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 577                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 578                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 579         then
 580                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 581                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 582         else
 583                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 584         fi
 585 }
 586
 587 is_nice_device ()
 588 {
 589         sysfs_path="${1#/sys}"
 590
 591         if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-[^-]*-(ide|scsi|usb))"
 592         then
 593                 return 0
 594         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 595         then
 596                 return 0
 597         fi
 598
 599         return 1
 600 }
 601
 602 copy_live_to ()
 603 {
 604         copyfrom="${1}"
 605         copytodev="${2}"
 606         copyto="${copyfrom}_swap"
 607
 608         if [ -z "${MODULETORAM}" ]
 609         then
 610                 size=$(fs_size "" ${copyfrom} "used")
 611         else
 612                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 613
 614                 if [ -f "${MODULETORAMFILE}" ]
 615                 then
 616                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 617                 else
 618                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 619                         return 1
 620                 fi
 621         fi
 622
 623         if [ "${copytodev}" = "ram" ]
 624         then
 625                 # copying to ram:
 626                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo ) )
 627                 mount_options="-o size=${size}k"
 628                 free_string="memory"
 629                 fstype="tmpfs"
 630                 dev="/dev/shm"
 631         else
 632                 # it should be a writable block device
 633                 if [ -b "${copytodev}" ]
 634                 then
 635                         dev="${copytodev}"
 636                         free_string="space"
 637                         fstype=$(get_fstype "${dev}")
 638                         freespace=$(fs_size "${dev}")
 639                 else
 640                         log_warning_msg "${copytodev} is not a block device."
 641                         return 1
 642                 fi
 643         fi
 644
 645         if [ "${freespace}" -lt "${size}" ]
 646         then
 647                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 648                 return 1
 649         fi
 650
 651         # begin copying (or uncompressing)
 652         mkdir "${copyto}"
 653         echo "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 654         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 655
 656         if [ "${extension}" = "tgz" ]
 657         then
 658                 cd "${copyto}"
 659                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 660                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 661                 mount -r -o move "${copyto}" "${rootmnt}"
 662                 cd "${OLDPWD}"
 663         else
 664                 if [ -n "${MODULETORAMFILE}" ]
 665                 then
 666                         cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 667                 else
 668                         cp -a ${copyfrom}/* ${copyto}   # "cp -a" from busybox also copies hidden files
 669                 fi
 670
 671                 umount ${copyfrom}
 672                 mount -r -o move ${copyto} ${copyfrom}
 673         fi
 674
 675         rmdir ${copyto}
 676         return 0
 677 }
 678
 679 do_netmount ()
 680 {
 681         rc=1
 682
 683         modprobe -q af_packet # For DHCP
 684
 685         if [ -x /sbin/udevadm ]
 686         then
 687                 # lenny
 688                 udevadm trigger
 689                 udevadm settle
 690         else
 691                 # etch
 692                 udevtrigger
 693                 udevsettle
 694         fi
 695
 696         ipconfig ${DEVICE} | tee /netboot.config
 697
 698         # source relevant ipconfig output
 699         OLDHOSTNAME=${HOSTNAME}
 700         . /tmp/net-${DEVICE}.conf
 701         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 702         export HOSTNAME
 703
 704         # Check if we have a network device at all
 705         if ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 706            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 707            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 708            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 709         then
 710                 panic "No supported network device found, maybe a non-mainline driver is required."
 711         fi
 712
 713         if [ "${NFSROOT}" = "auto" ]
 714         then
 715                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 716         fi
 717
 718         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] ) && do_httpmount
 719         then
 720                 rc=0
 721                 return ${rc}
 722         fi
 723
 724         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 725         then
 726                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 727         fi
 728
 729         log_begin_msg "Trying netboot from ${NFSROOT}"
 730
 731         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 732         then
 733                 rc=0
 734         elif do_nfsmount
 735         then
 736                 NETBOOT="nfs"
 737                 export NETBOOT
 738                 rc=0
 739         fi
 740
 741         log_end_msg
 742         return ${rc}
 743 }
 744
 745 do_httpmount ()
 746 {
 747         rc=1
 748         dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 749         mount -t ramfs ram "${mountpoint}"
 750         mkdir -p "${dest}"
 751
 752         for webfile in HTTPFS FTPFS FETCH
 753         do
 754                 url="$(eval echo \"\$\{${webfile}\}\")"
 755                 extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 756
 757                 if [ -n "$url" ]
 758                 then
 759                         case "${extension}" in
 760                                 squashfs|tgz|tar)
 761                                         if [ "${webfile}" = "FETCH" ]
 762                                         then
 763                                                 case "$url" in
 764                                                         tftp*)
 765                                                                 ip="$(dirname $url | sed -e 's|tftp://||g')"
 766                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $(basename ${url})  -l ${dest}/$(basename ${url}) $ip"
 767                                                                 tftp -g -b 10240 -r $(basename ${url})  -l ${dest}/$(basename ${url}) $ip
 768                                                         ;;
 769
 770                                                         *)
 771                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 772                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 773                                                                 ;;
 774                                                 esac
 775                                         else
 776                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 777                                                 if [ "${webfile}" = "FTPFS" ]
 778                                                 then
 779                                                         FUSE_MOUNT="curlftpfs"
 780                                                         url="$(dirname ${url})"
 781                                                 else
 782                                                         FUSE_MOUNT="httpfs"
 783                                                 fi
 784                                                 modprobe fuse
 785                                                 $FUSE_MOUNT "${url}" "${dest}"
 786                                         fi
 787                                         [ ${?} -eq 0 ] && rc=0
 788                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 789                                         break
 790                                         ;;
 791
 792                                 *)
 793                                         log_begin_msg "Unrecognized archive extension for ${url}"
 794                                         ;;
 795                         esac
 796                 fi
 797         done
 798
 799         if [ ${rc} != 0 ]
 800         then
 801             umount "${mountpoint}"
 802         fi
 803
 804         return ${rc}
 805 }
 806
 807 do_nfsmount ()
 808 {
 809         rc=1
 810
 811         modprobe -q nfs
 812
 813         if [ -z "${NFSOPTS}" ]
 814         then
 815                 NFSOPTS=""
 816         fi
 817
 818         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 819
 820         # FIXME: This while loop is an ugly HACK round an nfs bug
 821         i=0
 822         while [ "$i" -lt 60 ]
 823         do
 824                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 825                 sleep 1
 826                 i="$(($i + 1))"
 827         done
 828
 829         return ${rc}
 830 }
 831
 832 do_cifsmount ()
 833 {
 834         rc=1
 835
 836         if [ -x "/sbin/mount.cifs" ]
 837         then
 838                 if [ -z "${NFSOPTS}" ]
 839                 then
 840                         CIFSOPTS="-ouser=root,password="
 841                 else
 842                         CIFSOPTS="${NFSOPTS}"
 843                 fi
 844
 845                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 846                 modprobe -q cifs
 847
 848                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 849                 then
 850                         rc=0
 851                 fi
 852         fi
 853
 854         return ${rc}
 855 }
 856
 857 do_snap_copy ()
 858 {
 859         fromdev="${1}"
 860         todir="${2}"
 861         snap_type="${3}"
 862         size=$(fs_size "${fromdev}" "" "used")
 863
 864         if [ -b "${fromdev}" ]
 865         then
 866                 # look for free mem
 867                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 868                 then
 869                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 870                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 871                 else
 872                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo))
 873                 fi
 874
 875                 tomount="/mnt/tmpsnap"
 876
 877                 if [ ! -d "${tomount}" ]
 878                 then
 879                         mkdir -p "${tomount}"
 880                 fi
 881
 882                 fstype=$(get_fstype "${fromdev}")
 883
 884                 if [ -n "${fstype}" ]
 885                 then
 886                         # Copying stuff...
 887                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 888                         cp -a "${tomount}"/* ${todir}
 889                         umount "${tomount}"
 890                 else
 891                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 892                 fi
 893
 894                 rmdir "${tomount}"
 895
 896                 if echo ${fromdev} | grep -qs loop
 897                 then
 898                         losetup -d "${fromdev}"
 899                 fi
 900
 901                 return 0
 902         else
 903                 return 1
 904
 905                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 906         fi
 907 }
 908
 909 find_snap ()
 910 {
 911         # Look for ${snap_label}.* in block devices
 912         snap_label="${1}"
 913
 914         if [ "${PERSISTENT}" != "nofiles" ]
 915         then
 916                 # search for image files
 917                 snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
 918         fi
 919
 920         if [ -z "${snapdata}" ]
 921         then
 922                 snapdata=$(find_cow_device "${snap_label}")
 923         fi
 924         echo "${snapdata}"
 925 }
 926
 927 try_snap ()
 928 {
 929         # copy the contents of previously found snapshot to ${snap_mount}
 930         # and remember the device and filename for resync on exit in live-initramfs.init
 931
 932         snapdata="${1}"
 933         snap_mount="${2}"
 934         snap_type="${3}"
 935
 936         if [ ! -z "${snapdata}" ]
 937         then
 938                 log_success_msg "found snapshot: ${snapdata}"
 939                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 940                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 941                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 942
 943                 RES=""
 944                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 945                 then
 946                         break
 947                 fi
 948
 949                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|jffs2\)'
 950                 then
 951                         # squashfs, jffs2 or ext2/ext3 snapshot
 952                         dev=$(get_backing_device "${snapback}/${snapfile}")
 953
 954                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 955                         RES=$?
 956                 else
 957                         # cpio.gz snapshot
 958                         cd "${snap_mount}"
 959                         zcat "${snapback}/${snapfile}" | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories > /dev/null 2>&1
 960                         RES=$?
 961                         if [ "${RES}" != "0" ]
 962                         then
 963                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories\""
 964                         fi
 965                         cd "${OLDPWD}"
 966                 fi
 967
 968                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
 969
 970                 if [ "${RES}" != "0" ]
 971                 then
 972                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
 973                 fi
 974
 975
 976         elif [ -b "${snapdata}" ]
 977         then
 978                 # Try to find if it could be a snapshot partition
 979                 dev="${snapdata}"
 980                 log_success_msg "found snapshot device on ${dev}"
 981                 if echo "${dev}" | grep -qs loop
 982                 then
 983                         # strange things happens, user confused?
 984                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
 985                         snapfile=$(basename ${snaploop})
 986                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
 987                 else
 988                         snapdev="${dev}"
 989                 fi
 990
 991                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 992                 then
 993                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
 994                         return 1
 995                 else
 996                         if [ -n "${snapfile}" ]
 997                         then
 998                                 # it was a loop device, user confused
 999                                 umount ${snapdev}
1000                         fi
1001                 fi
1002         else
1003                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1004                 return 1
1005         fi
1006
1007         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1008         return 0
1009 }
1010
1011 setup_unionfs ()
1012 {
1013         image_directory="${1}"
1014         rootmnt="${2}"
1015         addimage_directory="${3}"
1016         modprobe -q -b ${UNIONTYPE}
1017
1018         # run-init can't deal with images in a subdir, but we're going to
1019         # move all of these away before it runs anyway.  No, we're not,
1020         # put them in / since move-mounting them into / breaks mono and
1021         # some other apps.
1022
1023         croot="/"
1024
1025         # Let's just mount the read-only file systems first
1026         rofsstring=""
1027         rofslist=""
1028         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
1029
1030         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
1031         then
1032                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
1033                 roopt="nfsro"
1034         elif [ "${UNIONTYPE}" = "aufs" ]
1035         then
1036                 roopt="rr"
1037         else
1038                 roopt="ro"
1039         fi
1040
1041         # Read image names from ${MODULE}.module if it exists
1042         if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1043         then
1044                 for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1045                 do
1046                         image_string="${image_string} ${image_directory}/${IMAGE}"
1047                 done
1048         elif [ -e "${image_directory}/${MODULE}.module" ]
1049         then
1050                 for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1051                 do
1052                         image_string="${image_string} ${image_directory}/${IMAGE}"
1053                 done
1054         else
1055                 # ${MODULE}.module does not exist, create a list of images
1056                 for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
1057                 do
1058                         for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1059                         do
1060                                 if [ -e "${IMAGE}" ]
1061                                 then
1062                                         image_string="${image_string} ${IMAGE}"
1063                                 fi
1064                         done
1065                 done
1066
1067                 if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1068                 then
1069                         for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
1070                         do
1071                                 for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1072                                 do
1073                                         if [ -e "${IMAGE}" ]
1074                                         then
1075                                                 image_string="${image_string} ${IMAGE}"
1076                                         fi
1077                                 done
1078                         done
1079                 fi
1080
1081                 # Now sort the list
1082                 image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1083         fi
1084
1085         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1086
1087         mkdir -p "${croot}"
1088
1089         for image in ${image_string}
1090         do
1091                 imagename=$(basename "${image}")
1092
1093                 export image devname
1094                 maybe_break live-realpremount
1095                 log_begin_msg "Running /scripts/live-realpremount"
1096                 run_scripts /scripts/live-realpremount
1097                 log_end_msg
1098
1099                 if [ -d "${image}" ]
1100                 then
1101                         # it is a plain directory: do nothing
1102                         rofsstring="${image}=${roopt}:${rofsstring}"
1103                         rofslist="${image} ${rofslist}"
1104                 elif [ -f "${image}" ]
1105                 then
1106                         if losetup --help 2>&1 | grep -q -- "-r\b"
1107                         then
1108                                 backdev=$(get_backing_device "${image}" "-r")
1109                         else
1110                                 backdev=$(get_backing_device "${image}")
1111                         fi
1112                         fstype=$(get_fstype "${backdev}")
1113
1114                         if [ "${fstype}" = "unknown" ]
1115                         then
1116                                 panic "Unknown file system type on ${backdev} (${image})"
1117                         fi
1118
1119                         if [ -z "${fstype}" ]
1120                         then
1121                                 fstype="${imagename##*.}"
1122                                 log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1123                         fi
1124
1125                         mkdir -p "${croot}/${imagename}"
1126                         log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1127                         mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1128                         log_end_msg
1129                 fi
1130         done
1131
1132         rofsstring=${rofsstring%:}
1133
1134         mkdir -p /cow
1135
1136         # Looking for "${root_persistence}" device or file
1137         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1138         then
1139                 # Load USB modules
1140                 num_block=$(ls -l /sys/block | wc -l)
1141                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1142                 do
1143                         modprobe -q -b ${module}
1144                 done
1145
1146                 if [ -x /sbin/udevadm ]
1147                 then
1148                         # lenny
1149                         udevadm trigger
1150                         udevadm settle
1151                 else
1152                         # etch
1153                         udevtrigger
1154                         udevsettle
1155                 fi
1156
1157                 # For some reason, udevsettle does not block in this scenario,
1158                 # so we sleep for a little while.
1159                 #
1160                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1161                 for timeout in 5 4 3 2 1
1162                 do
1163                         sleep 1
1164
1165                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1166                         then
1167                                 break
1168                         fi
1169                 done
1170
1171                 # search for label and files (this could be hugely optimized)
1172                 cowprobe=$(find_cow_device "${root_persistence}")
1173                 if [ -b "${cowprobe}" ]
1174                 then
1175                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1176                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1177                         # snapshots to be sure to really store some e.g key config files,
1178                         # but not on the same media
1179                         blacklistdev="${cowprobe}"
1180                         PERSISTENCE_IS_ON="1"
1181                         export PERSISTENCE_IS_ON
1182                 fi
1183                 # homecow just mount something on /home, this should be generalized some way
1184                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1185                 if [ -b "${homecow}" ]
1186                 then
1187                         PERSISTENCE_IS_ON="1"
1188                         export PERSISTENCE_IS_ON
1189                 fi
1190                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1191                 # This second type should be removed when snapshot will get smarter,
1192                 # hence when "/etc/live-snapshot*list" will be supported also by
1193                 # ext2|ext3|jffs2 snapshot types.
1194                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1195
1196                 if [ -b "${cowprobe}" ]
1197                 then
1198                         cowdevice=${cowprobe}
1199                         cow_fstype=$(get_fstype "${cowprobe}")
1200                         cow_mountopt="rw,noatime"
1201                 else
1202                         log_warning_msg "Unable to find the persistent medium"
1203                         cowdevice="tmpfs"
1204                         cow_fstype="tmpfs"
1205                         cow_mountopt="rw,noatime,mode=755"
1206                 fi
1207         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1208         then
1209                 # check if there are any nfs options
1210                 if echo ${NFS_COW}|grep -q ','
1211                 then
1212                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1213                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1214                 else
1215                         nfs_cow_opts="-o nolock"
1216                         nfs_cow=${NFS_COW}
1217                 fi
1218                 mac="$(get_mac)"
1219                 if [ -n "${mac}" ]
1220                 then
1221                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1222                         cow_fstype="nfs"
1223                 else
1224                         panic "unable to determine mac address"
1225                 fi
1226         else
1227                 cowdevice="tmpfs"
1228                 cow_fstype="tmpfs"
1229                 cow_mountopt="rw,noatime,mode=755"
1230         fi
1231
1232         if [ "${cow_fstype}" = "nfs" ]
1233         then
1234                 log_begin_msg \
1235                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1236                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1237                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1238         else
1239                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1240                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1241         fi
1242
1243         rofscount=$(echo ${rofslist} |wc -w)
1244
1245         if [ -n "${EXPOSED_ROOT}" ]
1246         then
1247                 if [ ${rofscount} -ne 1 ]
1248                 then
1249                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1250                 fi
1251                 exposedrootfs=${rofslist%% }
1252
1253                 mount --bind ${exposedrootfs} ${rootmnt} || \
1254                         panic "bind mount of ${exposedrootfs} failed"
1255
1256                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1257                 then
1258                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1259                 else
1260                         cow_dirs=''
1261                 fi
1262
1263                 for dir in ${cow_dirs}; do
1264                         mkdir -p /cow${dir}
1265                         mount -t ${UNIONTYPE} \
1266                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1267                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1268                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1269                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1270                 done
1271         else
1272                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1273                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1274                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1275         fi
1276
1277         # tmpfs file systems
1278         touch /etc/fstab
1279         mkdir -p "${rootmnt}/live"
1280         mount -t tmpfs tmpfs ${rootmnt}/live
1281
1282         # Adding other custom mounts
1283         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1284         then
1285                 # directly mount /home
1286                 # FIXME: add a custom mounts configurable system
1287
1288                 if [ -b "${homecow}" ]
1289                 then
1290                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1291                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1292                 else
1293                         log_warning_msg "Unable to find the persistent home medium"
1294                 fi
1295
1296                 # Look for other snapshots to copy in
1297                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1298                 # This second type should be removed when snapshot grow smarter
1299                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1300         fi
1301
1302         if [ -n "${SHOWMOUNTS}" ]
1303         then
1304                 for d in ${rofslist}
1305                 do
1306                         mkdir -p "${rootmnt}/live/${d##*/}"
1307
1308                         case d in
1309                                 *.dir)
1310                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1311                                         ;;
1312
1313                                 *)
1314                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1315                                         ;;
1316                         esac
1317                 done
1318         fi
1319
1320         # shows cow fs on /cow for use by live-snapshot
1321         mkdir -p "${rootmnt}/live/cow"
1322         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 ${rootmnt}/live/cow"
1323 }
1324
1325 check_dev ()
1326 {
1327         sysdev="${1}"
1328         devname="${2}"
1329         skip_uuid_check="${3}"
1330
1331         if [ -z "${devname}" ]
1332         then
1333                 devname=$(sys2dev "${sysdev}")
1334         fi
1335
1336         if [ -d "${devname}" ]
1337         then
1338                 mount -o bind "${devname}" $mountpoint || continue
1339
1340                 if is_live_path $mountpoint
1341                 then
1342                         echo $mountpoint
1343                         return 0
1344                 else
1345                         umount $mountpoint
1346                 fi
1347         fi
1348
1349         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1350         then
1351                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1352                 devname="${loopdevname}"
1353         fi
1354
1355         fstype=$(get_fstype "${devname}")
1356
1357         if is_supported_fs ${fstype}
1358         then
1359                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1360
1361                 if is_live_path ${mountpoint} && \
1362                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1363                 then
1364                         echo ${mountpoint}
1365                         return 0
1366                 else
1367                         umount ${mountpoint}
1368                 fi
1369         fi
1370
1371         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1372         then
1373                 losetup -d "${loopdevname}"
1374         fi
1375
1376         return 1
1377 }
1378
1379 find_livefs ()
1380 {
1381         timeout="${1}"
1382
1383         # first look at the one specified in the command line
1384         if [ ! -z "${LIVE_MEDIA}" ]
1385         then
1386                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1387                 then
1388                         return 0
1389                 fi
1390         fi
1391
1392         # don't start autodetection before timeout has expired
1393         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1394         then
1395                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1396                 then
1397                         return 1
1398                 fi
1399         fi
1400
1401         # or do the scan of block devices
1402         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1403         do
1404                 devname=$(sys2dev "${sysblock}")
1405                 fstype=$(get_fstype "${devname}")
1406
1407                 if /lib/udev/cdrom_id ${devname} > /dev/null
1408                 then
1409                         if check_dev "null" "${devname}"
1410                         then
1411                                 return 0
1412                         fi
1413                 elif is_nice_device "${sysblock}"
1414                 then
1415                         for dev in $(subdevices "${sysblock}")
1416                         do
1417                                 if check_dev "${dev}"
1418                                 then
1419                                         return 0
1420                                 fi
1421                         done
1422                 elif [ "${fstype}" = "squashfs" -o \
1423                         "${fstype}" = "ext2" -o \
1424                         "${fstype}" = "ext3" -o \
1425                         "${fstype}" = "jffs2" ]
1426                 then
1427                         # This is an ugly hack situation, the block device has
1428                         # an image directly on it.  It's hopefully
1429                         # live-initramfs, so take it and run with it.
1430                         ln -s "${devname}" "${devname}.${fstype}"
1431                         echo "${devname}.${fstype}"
1432                         return 0
1433                 fi
1434         done
1435
1436         return 1
1437 }
1438
1439 set_usplash_timeout ()
1440 {
1441         if [ -x /sbin/usplash_write ]
1442         then
1443                 /sbin/usplash_write "TIMEOUT 120"
1444         else if [ -x /sbin/splashy_update ] ; then
1445                 /sbin/splashy_update "TIMEOUT 120"
1446         fi ; fi
1447 }
1448
1449 integrity_check ()
1450 {
1451         media_mountpoint="${1}"
1452
1453         log_begin_msg "Checking media integrity"
1454
1455         cd ${media_mountpoint}
1456         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1457         RC="${?}"
1458
1459         log_end_msg
1460
1461         if [ "${RC}" -eq 0 ]
1462         then
1463                 log_success_msg "Everything ok, will reboot in 10 seconds."
1464                 sleep 10
1465                 cd /
1466                 umount ${media_mountpoint}
1467                 sync
1468                 echo u > /proc/sysrq-trigger
1469                 echo b > /proc/sysrq-trigger
1470         else
1471                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1472         fi
1473 }
1474
1475 mountroot ()
1476 {
1477         if [ -x /scripts/local-top/cryptroot ]; then
1478             /scripts/local-top/cryptroot
1479         fi
1480
1481         exec 6>&1
1482         exec 7>&2
1483         exec > live.log
1484         exec 2>&1
1485         tail -f live.log >&7 &
1486         tailpid="${!}"
1487
1488         # Ensure 'panic' function is overridden
1489         . /scripts/live-functions
1490
1491         Arguments
1492
1493         set_usplash_timeout
1494
1495         maybe_break live-premount
1496         log_begin_msg "Running /scripts/live-premount"
1497         run_scripts /scripts/live-premount
1498         log_end_msg
1499
1500         # Needed here too because some things (*cough* udev *cough*)
1501         # changes the timeout
1502
1503         set_usplash_timeout
1504
1505         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1506         then
1507                 if do_netmount
1508                 then
1509                         livefs_root="${mountpoint}"
1510                 else
1511                         panic "Unable to find a live file system on the network"
1512                 fi
1513         else
1514                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1515                 then
1516                         # Do a local boot from hd
1517                         livefs_root=${ROOT}
1518                 else
1519                         # Scan local devices for the image
1520                         i=0
1521                         while [ "$i" -lt 60 ]
1522                         do
1523                                 livefs_root=$(find_livefs ${i})
1524
1525                                 if [ -n "${livefs_root}" ]
1526                                 then
1527                                         break
1528                                 fi
1529
1530                                 sleep 1
1531                                 i="$(($i + 1))"
1532                         done
1533                 fi
1534         fi
1535
1536         if [ -z "${livefs_root}" ]
1537         then
1538                 panic "Unable to find a medium containing a live file system"
1539         fi
1540
1541         if [ "${INTEGRITY_CHECK}" ]
1542         then
1543                 integrity_check "${livefs_root}"
1544         fi
1545
1546         if [ "${TORAM}" ]
1547         then
1548                 live_dest="ram"
1549         elif [ "${TODISK}" ]
1550         then
1551                 live_dest="${TODISK}"
1552         fi
1553
1554         if [ "${live_dest}" ]
1555         then
1556                 log_begin_msg "Copying live media to ${live_dest}"
1557                 copy_live_to "${livefs_root}" "${live_dest}"
1558                 log_end_msg
1559         fi
1560
1561         if [ -n "${MODULETORAMFILE}" ]
1562         then
1563                 setup_unionfs "${livefs_root}" "${rootmnt}"
1564         else
1565                 mac="$(get_mac)"
1566                 mac="$(echo ${mac} | sed 's/-//g')"
1567                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1568         fi
1569
1570         log_end_msg
1571
1572         maybe_break live-bottom
1573         log_begin_msg "Running /scripts/live-bottom\n"
1574
1575         run_scripts /scripts/live-bottom
1576         log_end_msg
1577
1578         exec 1>&6 6>&-
1579         exec 2>&7 7>&-
1580         kill ${tailpid}
1581         cp live.log "${rootmnt}/var/log/"
1582 }