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 "${PERSISTENT}" ]
 337                                 then
 338                                         PERSISTENT="Yes"
 339                                 fi
 340                                 export PERSISTENT
 341                                 ;;
 342
 343                         persistent-path=*)
 344                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 345                                 export PERSISTENT_PATH
 346                                 ;;
 347
 348                         nopersistent)
 349                                 NOPERSISTENT="Yes"
 350                                 export NOPERSISTENT
 351                                 ;;
 352
 353                         preseed/file=*|file=*)
 354                                 LOCATION="${ARGUMENT#*=}"
 355                                 export LOCATION
 356                                 ;;
 357
 358                         nopreseed)
 359                                 NOPRESEED="Yes"
 360                                 export NOPRESEED
 361                                 ;;
 362
 363                         url=*)
 364                                 location="${ARGUMENT#url=}"
 365
 366                                 mount -o bind /sys /root/sys
 367                                 mount -o bind /proc /root/proc
 368                                 mount -o bind /dev /root/dev
 369
 370                                 mkdir -p /root/var/run/network
 371                                 chroot /root dhclient eth0
 372                                 chroot /root wget -P /tmp "${location}"
 373                                 chroot /root ifconfig eth0 down
 374
 375                                 umount /root/sys
 376                                 umount /root/proc
 377                                 umount /root/dev
 378
 379                                 LOCATION="/tmp/$(basename "${location}")"
 380                                 ;;
 381
 382                         */*=*)
 383                                 question="${ARGUMENT%%=*}"
 384                                 value="${ARGUMENT#*=}"
 385                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 386                                 export PRESEEDS
 387                                 ;;
 388
 389                         showmounts)
 390                                 SHOWMOUNTS="Yes"
 391                                 export SHOWMOUNTS
 392                                 ;;
 393
 394                         textonly)
 395                                 TEXTONLY="Yes"
 396                                 export TEXTONLY
 397                                 ;;
 398
 399                         timezone=*)
 400                                 TIMEZONE="${ARGUMENT#timezone=}"
 401                                 export TIMEZONE
 402                                 ;;
 403
 404                         notimezone)
 405                                 NOTIMEZONE="Yes"
 406                                 export NOTIMEZONE
 407                                 ;;
 408
 409                         todisk=*)
 410                                 TODISK="${ARGUMENT#todisk=}"
 411                                 export TODISK
 412                                 ;;
 413
 414                         toram)
 415                                 TORAM="Yes"
 416                                 export TORAM
 417                                 ;;
 418
 419                         toram=*)
 420                                 TORAM="Yes"
 421                                 MODULETORAM="${ARGUMENT#toram=}"
 422                                 export TORAM MODULETORAM
 423                                 ;;
 424
 425                         exposedroot)
 426                                 EXPOSED_ROOT="Yes"
 427                                 export EXPOSED_ROOT
 428                                 ;;
 429
 430                         plainroot)
 431                                 PLAIN_ROOT="Yes"
 432                                 export PLAIN_ROOT
 433                                 ;;
 434
 435                         skipunion)
 436                                 SKIP_UNION_MOUNTS="Yes"
 437                                 export SKIP_UNION_MOUNTS
 438                                 ;;
 439
 440                         root=*)
 441                                 ROOT="${ARGUMENT#root=}"
 442                                 export ROOT
 443                                 ;;
 444
 445                         union=*)
 446                                 UNIONTYPE="${ARGUMENT#union=}"
 447                                 export UNIONTYPE
 448                                 ;;
 449
 450                         utc=*)
 451                                 UTC="${ARGUMENT#utc=}"
 452                                 export UTC
 453                                 ;;
 454
 455                         xdebconf)
 456                                 XDEBCONF="Yes"
 457                                 export XDEBCONF
 458                                 ;;
 459
 460                         xdriver=*)
 461                                 XDRIVER="${ARGUMENT#xdriver=}"
 462                                 export XDRIVER
 463                                 ;;
 464
 465                         xvideomode=*)
 466                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 467                                 export XVIDEOMODE
 468                                 ;;
 469                 esac
 470         done
 471
 472         # sort of compatibility with netboot.h from linux docs
 473         if [ -z "${NETBOOT}" ]
 474         then
 475                 if [ "${ROOT}" = "/dev/nfs" ]
 476                 then
 477                         NETBOOT="nfs"
 478                         export NETBOOT
 479                 elif [ "${ROOT}" = "/dev/cifs" ]
 480                 then
 481                         NETBOOT="cifs"
 482                         export NETBOOT
 483                 fi
 484         fi
 485
 486         if [ -z "${MODULE}" ]
 487         then
 488                 MODULE="filesystem"
 489                 export MODULE
 490         fi
 491
 492         if [ -z "${UNIONTYPE}" ]
 493         then
 494                 UNIONTYPE="aufs"
 495                 export UNIONTYPE
 496         fi
 497 }
 498
 499 is_live_path ()
 500 {
 501         DIRECTORY="${1}"
 502
 503         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 504         then
 505                 for FILESYSTEM in squashfs ext2 ext3 xfs dir jffs2
 506                 do
 507                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 508                         then
 509                                 return 0
 510                         fi
 511                 done
 512         fi
 513
 514         return 1
 515 }
 516
 517 matches_uuid ()
 518 {
 519         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 520         then
 521                 return 0
 522         fi
 523
 524         path="${1}"
 525         uuid="$(cat /conf/uuid.conf)"
 526
 527         for try_uuid_file in "${path}/.disk/live-uuid"*
 528         do
 529                 [ -e "${try_uuid_file}" ] || continue
 530
 531                 try_uuid="$(cat "${try_uuid_file}")"
 532
 533                 if [ "${uuid}" = "${try_uuid}" ]
 534                 then
 535                         return 0
 536                 fi
 537         done
 538
 539         return 1
 540 }
 541
 542 get_backing_device ()
 543 {
 544         case "${1}" in
 545                 *.squashfs|*.ext2|*.ext3|*.jffs2)
 546                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 547                         ;;
 548
 549                 *.dir)
 550                         echo "directory"
 551                         ;;
 552
 553                 *)
 554                         panic "Unrecognized live filesystem: ${1}"
 555                         ;;
 556         esac
 557 }
 558
 559 match_files_in_dir ()
 560 {
 561         # Does any files match pattern ${1} ?
 562         local pattern="${1}"
 563
 564         if [ "$(echo ${pattern})" != "${pattern}" ]
 565         then
 566                 return 0
 567         fi
 568
 569         return 1
 570 }
 571
 572 mount_images_in_directory ()
 573 {
 574         directory="${1}"
 575         rootmnt="${2}"
 576         mac="${3}"
 577
 578
 579         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 580                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 581                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 582                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 583                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 584         then
 585                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 586                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 587         else
 588                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 589         fi
 590 }
 591
 592 is_nice_device ()
 593 {
 594         sysfs_path="${1#/sys}"
 595
 596         if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-[^-]*-(ide|scsi|usb))"
 597         then
 598                 return 0
 599         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 600         then
 601                 return 0
 602         fi
 603
 604         return 1
 605 }
 606
 607 copy_live_to ()
 608 {
 609         copyfrom="${1}"
 610         copytodev="${2}"
 611         copyto="${copyfrom}_swap"
 612
 613         if [ -z "${MODULETORAM}" ]
 614         then
 615                 size=$(fs_size "" ${copyfrom} "used")
 616         else
 617                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 618
 619                 if [ -f "${MODULETORAMFILE}" ]
 620                 then
 621                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 622                 else
 623                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 624                         return 1
 625                 fi
 626         fi
 627
 628         if [ "${copytodev}" = "ram" ]
 629         then
 630                 # copying to ram:
 631                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo ) )
 632                 mount_options="-o size=${size}k"
 633                 free_string="memory"
 634                 fstype="tmpfs"
 635                 dev="/dev/shm"
 636         else
 637                 # it should be a writable block device
 638                 if [ -b "${copytodev}" ]
 639                 then
 640                         dev="${copytodev}"
 641                         free_string="space"
 642                         fstype=$(get_fstype "${dev}")
 643                         freespace=$(fs_size "${dev}")
 644                 else
 645                         log_warning_msg "${copytodev} is not a block device."
 646                         return 1
 647                 fi
 648         fi
 649
 650         if [ "${freespace}" -lt "${size}" ]
 651         then
 652                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 653                 return 1
 654         fi
 655
 656         # begin copying (or uncompressing)
 657         mkdir "${copyto}"
 658         echo "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 659         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 660
 661         if [ "${extension}" = "tgz" ]
 662         then
 663                 cd "${copyto}"
 664                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 665                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 666                 mount -r -o move "${copyto}" "${rootmnt}"
 667                 cd "${OLDPWD}"
 668         else
 669                 if [ -n "${MODULETORAMFILE}" ]
 670                 then
 671                         cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 672                 else
 673                         cp -a ${copyfrom}/* ${copyto}   # "cp -a" from busybox also copies hidden files
 674                 fi
 675
 676                 umount ${copyfrom}
 677                 mount -r -o move ${copyto} ${copyfrom}
 678         fi
 679
 680         rmdir ${copyto}
 681         return 0
 682 }
 683
 684 do_netmount ()
 685 {
 686         rc=1
 687
 688         modprobe -q af_packet # For DHCP
 689
 690         if [ -x /sbin/udevadm ]
 691         then
 692                 # lenny
 693                 udevadm trigger
 694                 udevadm settle
 695         else
 696                 # etch
 697                 udevtrigger
 698                 udevsettle
 699         fi
 700
 701         ipconfig ${DEVICE} | tee /netboot.config
 702
 703         # source relevant ipconfig output
 704         OLDHOSTNAME=${HOSTNAME}
 705         . /tmp/net-${DEVICE}.conf
 706         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 707         export HOSTNAME
 708
 709         # Check if we have a network device at all
 710         if ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 711            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 712            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 713            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 714         then
 715                 panic "No supported network device found, maybe a non-mainline driver is required."
 716         fi
 717
 718         if [ "${NFSROOT}" = "auto" ]
 719         then
 720                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 721         fi
 722
 723         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] ) && do_httpmount
 724         then
 725                 rc=0
 726                 return ${rc}
 727         fi
 728
 729         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 730         then
 731                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 732         fi
 733
 734         log_begin_msg "Trying netboot from ${NFSROOT}"
 735
 736         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 737         then
 738                 rc=0
 739         elif do_nfsmount
 740         then
 741                 NETBOOT="nfs"
 742                 export NETBOOT
 743                 rc=0
 744         fi
 745
 746         log_end_msg
 747         return ${rc}
 748 }
 749
 750 do_httpmount ()
 751 {
 752         rc=1
 753         dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 754         mount -t ramfs ram "${mountpoint}"
 755         mkdir -p "${dest}"
 756
 757         for webfile in HTTPFS FTPFS FETCH
 758         do
 759                 url="$(eval echo \"\$\{${webfile}\}\")"
 760                 extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 761
 762                 if [ -n "$url" ]
 763                 then
 764                         case "${extension}" in
 765                                 squashfs|tgz|tar)
 766                                         if [ "${webfile}" = "FETCH" ]
 767                                         then
 768                                                 case "$url" in
 769                                                         tftp*)
 770                                                                 ip="$(dirname $url | sed -e 's|tftp://||g')"
 771                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $(basename ${url})  -l ${dest}/$(basename ${url}) $ip"
 772                                                                 tftp -g -b 10240 -r $(basename ${url})  -l ${dest}/$(basename ${url}) $ip
 773                                                         ;;
 774
 775                                                         *)
 776                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 777                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 778                                                                 ;;
 779                                                 esac
 780                                         else
 781                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 782                                                 if [ "${webfile}" = "FTPFS" ]
 783                                                 then
 784                                                         FUSE_MOUNT="curlftpfs"
 785                                                         url="$(dirname ${url})"
 786                                                 else
 787                                                         FUSE_MOUNT="httpfs"
 788                                                 fi
 789                                                 modprobe fuse
 790                                                 $FUSE_MOUNT "${url}" "${dest}"
 791                                         fi
 792                                         [ ${?} -eq 0 ] && rc=0
 793                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 794                                         break
 795                                         ;;
 796
 797                                 *)
 798                                         log_begin_msg "Unrecognized archive extension for ${url}"
 799                                         ;;
 800                         esac
 801                 fi
 802         done
 803
 804         if [ ${rc} != 0 ]
 805         then
 806             umount "${mountpoint}"
 807         fi
 808
 809         return ${rc}
 810 }
 811
 812 do_nfsmount ()
 813 {
 814         rc=1
 815
 816         modprobe -q nfs
 817
 818         if [ -z "${NFSOPTS}" ]
 819         then
 820                 NFSOPTS=""
 821         fi
 822
 823         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 824
 825         # FIXME: This while loop is an ugly HACK round an nfs bug
 826         i=0
 827         while [ "$i" -lt 60 ]
 828         do
 829                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 830                 sleep 1
 831                 i="$(($i + 1))"
 832         done
 833
 834         return ${rc}
 835 }
 836
 837 do_cifsmount ()
 838 {
 839         rc=1
 840
 841         if [ -x "/sbin/mount.cifs" ]
 842         then
 843                 if [ -z "${NFSOPTS}" ]
 844                 then
 845                         CIFSOPTS="-ouser=root,password="
 846                 else
 847                         CIFSOPTS="${NFSOPTS}"
 848                 fi
 849
 850                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 851                 modprobe -q cifs
 852
 853                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 854                 then
 855                         rc=0
 856                 fi
 857         fi
 858
 859         return ${rc}
 860 }
 861
 862 do_snap_copy ()
 863 {
 864         fromdev="${1}"
 865         todir="${2}"
 866         snap_type="${3}"
 867         size=$(fs_size "${fromdev}" "" "used")
 868
 869         if [ -b "${fromdev}" ]
 870         then
 871                 # look for free mem
 872                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 873                 then
 874                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 875                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 876                 else
 877                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo))
 878                 fi
 879
 880                 tomount="/mnt/tmpsnap"
 881
 882                 if [ ! -d "${tomount}" ]
 883                 then
 884                         mkdir -p "${tomount}"
 885                 fi
 886
 887                 fstype=$(get_fstype "${fromdev}")
 888
 889                 if [ -n "${fstype}" ]
 890                 then
 891                         # Copying stuff...
 892                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 893                         cp -a "${tomount}"/* ${todir}
 894                         umount "${tomount}"
 895                 else
 896                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 897                 fi
 898
 899                 rmdir "${tomount}"
 900
 901                 if echo ${fromdev} | grep -qs loop
 902                 then
 903                         losetup -d "${fromdev}"
 904                 fi
 905
 906                 return 0
 907         else
 908                 return 1
 909
 910                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 911         fi
 912 }
 913
 914 find_snap ()
 915 {
 916         # Look for ${snap_label}.* in block devices
 917         snap_label="${1}"
 918
 919         if [ "${PERSISTENT}" != "nofiles" ]
 920         then
 921                 # search for image files
 922                 snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
 923         fi
 924
 925         if [ -z "${snapdata}" ]
 926         then
 927                 snapdata=$(find_cow_device "${snap_label}")
 928         fi
 929         echo "${snapdata}"
 930 }
 931
 932 try_snap ()
 933 {
 934         # copy the contents of previously found snapshot to ${snap_mount}
 935         # and remember the device and filename for resync on exit in live-initramfs.init
 936
 937         snapdata="${1}"
 938         snap_mount="${2}"
 939         snap_type="${3}"
 940
 941         if [ ! -z "${snapdata}" ]
 942         then
 943                 log_success_msg "found snapshot: ${snapdata}"
 944                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 945                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 946                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 947
 948                 RES=""
 949                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 950                 then
 951                         break
 952                 fi
 953
 954                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|jffs2\)'
 955                 then
 956                         # squashfs, jffs2 or ext2/ext3 snapshot
 957                         dev=$(get_backing_device "${snapback}/${snapfile}")
 958
 959                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 960                         RES=$?
 961                 else
 962                         # cpio.gz snapshot
 963                         cd "${snap_mount}"
 964                         zcat "${snapback}/${snapfile}" | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories > /dev/null 2>&1
 965                         RES=$?
 966                         if [ "${RES}" != "0" ]
 967                         then
 968                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories\""
 969                         fi
 970                         cd "${OLDPWD}"
 971                 fi
 972
 973                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
 974
 975                 if [ "${RES}" != "0" ]
 976                 then
 977                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
 978                 fi
 979
 980
 981         elif [ -b "${snapdata}" ]
 982         then
 983                 # Try to find if it could be a snapshot partition
 984                 dev="${snapdata}"
 985                 log_success_msg "found snapshot device on ${dev}"
 986                 if echo "${dev}" | grep -qs loop
 987                 then
 988                         # strange things happens, user confused?
 989                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
 990                         snapfile=$(basename ${snaploop})
 991                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
 992                 else
 993                         snapdev="${dev}"
 994                 fi
 995
 996                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 997                 then
 998                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
 999                         return 1
1000                 else
1001                         if [ -n "${snapfile}" ]
1002                         then
1003                                 # it was a loop device, user confused
1004                                 umount ${snapdev}
1005                         fi
1006                 fi
1007         else
1008                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1009                 return 1
1010         fi
1011
1012         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1013         return 0
1014 }
1015
1016 setup_unionfs ()
1017 {
1018         image_directory="${1}"
1019         rootmnt="${2}"
1020         addimage_directory="${3}"
1021         modprobe -q -b ${UNIONTYPE}
1022
1023         # run-init can't deal with images in a subdir, but we're going to
1024         # move all of these away before it runs anyway.  No, we're not,
1025         # put them in / since move-mounting them into / breaks mono and
1026         # some other apps.
1027
1028         croot="/"
1029
1030         # Let's just mount the read-only file systems first
1031         rofsstring=""
1032         rofslist=""
1033         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
1034
1035         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
1036         then
1037                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
1038                 roopt="nfsro"
1039         elif [ "${UNIONTYPE}" = "aufs" ]
1040         then
1041                 roopt="rr"
1042         else
1043                 roopt="ro"
1044         fi
1045
1046         # Read image names from ${MODULE}.module if it exists
1047         if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1048         then
1049                 for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1050                 do
1051                         image_string="${image_string} ${image_directory}/${IMAGE}"
1052                 done
1053         elif [ -e "${image_directory}/${MODULE}.module" ]
1054         then
1055                 for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1056                 do
1057                         image_string="${image_string} ${image_directory}/${IMAGE}"
1058                 done
1059         else
1060                 # ${MODULE}.module does not exist, create a list of images
1061                 for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
1062                 do
1063                         for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1064                         do
1065                                 if [ -e "${IMAGE}" ]
1066                                 then
1067                                         image_string="${image_string} ${IMAGE}"
1068                                 fi
1069                         done
1070                 done
1071
1072                 if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1073                 then
1074                         for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
1075                         do
1076                                 for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1077                                 do
1078                                         if [ -e "${IMAGE}" ]
1079                                         then
1080                                                 image_string="${image_string} ${IMAGE}"
1081                                         fi
1082                                 done
1083                         done
1084                 fi
1085
1086                 # Now sort the list
1087                 image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1088         fi
1089
1090         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1091
1092         mkdir -p "${croot}"
1093
1094         for image in ${image_string}
1095         do
1096                 imagename=$(basename "${image}")
1097
1098                 export image devname
1099                 maybe_break live-realpremount
1100                 log_begin_msg "Running /scripts/live-realpremount"
1101                 run_scripts /scripts/live-realpremount
1102                 log_end_msg
1103
1104                 if [ -d "${image}" ]
1105                 then
1106                         # it is a plain directory: do nothing
1107                         rofsstring="${image}=${roopt}:${rofsstring}"
1108                         rofslist="${image} ${rofslist}"
1109                 elif [ -f "${image}" ]
1110                 then
1111                         if losetup --help 2>&1 | grep -q -- "-r\b"
1112                         then
1113                                 backdev=$(get_backing_device "${image}" "-r")
1114                         else
1115                                 backdev=$(get_backing_device "${image}")
1116                         fi
1117                         fstype=$(get_fstype "${backdev}")
1118
1119                         if [ "${fstype}" = "unknown" ]
1120                         then
1121                                 panic "Unknown file system type on ${backdev} (${image})"
1122                         fi
1123
1124                         if [ -z "${fstype}" ]
1125                         then
1126                                 fstype="${imagename##*.}"
1127                                 log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1128                         fi
1129
1130                         mkdir -p "${croot}/${imagename}"
1131                         log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1132                         mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1133                         log_end_msg
1134                 fi
1135         done
1136
1137         rofsstring=${rofsstring%:}
1138
1139         mkdir -p /cow
1140
1141         # Looking for "${root_persistence}" device or file
1142         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1143         then
1144                 # Load USB modules
1145                 num_block=$(ls -l /sys/block | wc -l)
1146                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1147                 do
1148                         modprobe -q -b ${module}
1149                 done
1150
1151                 if [ -x /sbin/udevadm ]
1152                 then
1153                         # lenny
1154                         udevadm trigger
1155                         udevadm settle
1156                 else
1157                         # etch
1158                         udevtrigger
1159                         udevsettle
1160                 fi
1161
1162                 # For some reason, udevsettle does not block in this scenario,
1163                 # so we sleep for a little while.
1164                 #
1165                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1166                 for timeout in 5 4 3 2 1
1167                 do
1168                         sleep 1
1169
1170                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1171                         then
1172                                 break
1173                         fi
1174                 done
1175
1176                 # search for label and files (this could be hugely optimized)
1177                 cowprobe=$(find_cow_device "${root_persistence}")
1178                 if [ -b "${cowprobe}" ]
1179                 then
1180                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1181                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1182                         # snapshots to be sure to really store some e.g key config files,
1183                         # but not on the same media
1184                         blacklistdev="${cowprobe}"
1185                         PERSISTENCE_IS_ON="1"
1186                         export PERSISTENCE_IS_ON
1187                 fi
1188                 # homecow just mount something on /home, this should be generalized some way
1189                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1190                 if [ -b "${homecow}" ]
1191                 then
1192                         PERSISTENCE_IS_ON="1"
1193                         export PERSISTENCE_IS_ON
1194                 fi
1195                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1196                 # This second type should be removed when snapshot will get smarter,
1197                 # hence when "/etc/live-snapshot*list" will be supported also by
1198                 # ext2|ext3|jffs2 snapshot types.
1199                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1200
1201                 if [ -b "${cowprobe}" ]
1202                 then
1203                         cowdevice=${cowprobe}
1204                         cow_fstype=$(get_fstype "${cowprobe}")
1205                         cow_mountopt="rw,noatime"
1206                 else
1207                         log_warning_msg "Unable to find the persistent medium"
1208                         cowdevice="tmpfs"
1209                         cow_fstype="tmpfs"
1210                         cow_mountopt="rw,noatime,mode=755"
1211                 fi
1212         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1213         then
1214                 # check if there are any nfs options
1215                 if echo ${NFS_COW}|grep -q ','
1216                 then
1217                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1218                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1219                 else
1220                         nfs_cow_opts="-o nolock"
1221                         nfs_cow=${NFS_COW}
1222                 fi
1223                 mac="$(get_mac)"
1224                 if [ -n "${mac}" ]
1225                 then
1226                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1227                         cow_fstype="nfs"
1228                 else
1229                         panic "unable to determine mac address"
1230                 fi
1231         else
1232                 cowdevice="tmpfs"
1233                 cow_fstype="tmpfs"
1234                 cow_mountopt="rw,noatime,mode=755"
1235         fi
1236
1237         if [ "${cow_fstype}" = "nfs" ]
1238         then
1239                 log_begin_msg \
1240                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1241                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1242                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1243         else
1244                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1245                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1246         fi
1247
1248         rofscount=$(echo ${rofslist} |wc -w)
1249
1250         if [ -n "${EXPOSED_ROOT}" ]
1251         then
1252                 if [ ${rofscount} -ne 1 ]
1253                 then
1254                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1255                 fi
1256                 exposedrootfs=${rofslist%% }
1257
1258                 mount --bind ${exposedrootfs} ${rootmnt} || \
1259                         panic "bind mount of ${exposedrootfs} failed"
1260
1261                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1262                 then
1263                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1264                 else
1265                         cow_dirs=''
1266                 fi
1267
1268                 for dir in ${cow_dirs}; do
1269                         mkdir -p /cow${dir}
1270                         mount -t ${UNIONTYPE} \
1271                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1272                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1273                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1274                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1275                 done
1276         else
1277                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1278                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1279                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1280         fi
1281
1282         # tmpfs file systems
1283         touch /etc/fstab
1284         mkdir -p "${rootmnt}/live"
1285         mount -t tmpfs tmpfs ${rootmnt}/live
1286
1287         # Adding other custom mounts
1288         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1289         then
1290                 # directly mount /home
1291                 # FIXME: add a custom mounts configurable system
1292
1293                 if [ -b "${homecow}" ]
1294                 then
1295                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1296                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1297                 else
1298                         log_warning_msg "Unable to find the persistent home medium"
1299                 fi
1300
1301                 # Look for other snapshots to copy in
1302                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1303                 # This second type should be removed when snapshot grow smarter
1304                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1305         fi
1306
1307         if [ -n "${SHOWMOUNTS}" ]
1308         then
1309                 for d in ${rofslist}
1310                 do
1311                         mkdir -p "${rootmnt}/live/${d##*/}"
1312
1313                         case d in
1314                                 *.dir)
1315                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1316                                         ;;
1317
1318                                 *)
1319                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1320                                         ;;
1321                         esac
1322                 done
1323         fi
1324
1325         # shows cow fs on /cow for use by live-snapshot
1326         mkdir -p "${rootmnt}/live/cow"
1327         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 ${rootmnt}/live/cow"
1328 }
1329
1330 check_dev ()
1331 {
1332         sysdev="${1}"
1333         devname="${2}"
1334         skip_uuid_check="${3}"
1335
1336         if [ -z "${devname}" ]
1337         then
1338                 devname=$(sys2dev "${sysdev}")
1339         fi
1340
1341         if [ -d "${devname}" ]
1342         then
1343                 mount -o bind "${devname}" $mountpoint || continue
1344
1345                 if is_live_path $mountpoint
1346                 then
1347                         echo $mountpoint
1348                         return 0
1349                 else
1350                         umount $mountpoint
1351                 fi
1352         fi
1353
1354         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1355         then
1356                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1357                 devname="${loopdevname}"
1358         fi
1359
1360         fstype=$(get_fstype "${devname}")
1361
1362         if is_supported_fs ${fstype}
1363         then
1364                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1365
1366                 if is_live_path ${mountpoint} && \
1367                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1368                 then
1369                         echo ${mountpoint}
1370                         return 0
1371                 else
1372                         umount ${mountpoint}
1373                 fi
1374         fi
1375
1376         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1377         then
1378                 losetup -d "${loopdevname}"
1379         fi
1380
1381         return 1
1382 }
1383
1384 find_livefs ()
1385 {
1386         timeout="${1}"
1387
1388         # first look at the one specified in the command line
1389         if [ ! -z "${LIVE_MEDIA}" ]
1390         then
1391                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1392                 then
1393                         return 0
1394                 fi
1395         fi
1396
1397         # don't start autodetection before timeout has expired
1398         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1399         then
1400                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1401                 then
1402                         return 1
1403                 fi
1404         fi
1405
1406         # or do the scan of block devices
1407         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1408         do
1409                 devname=$(sys2dev "${sysblock}")
1410                 fstype=$(get_fstype "${devname}")
1411
1412                 if /lib/udev/cdrom_id ${devname} > /dev/null
1413                 then
1414                         if check_dev "null" "${devname}"
1415                         then
1416                                 return 0
1417                         fi
1418                 elif is_nice_device "${sysblock}"
1419                 then
1420                         for dev in $(subdevices "${sysblock}")
1421                         do
1422                                 if check_dev "${dev}"
1423                                 then
1424                                         return 0
1425                                 fi
1426                         done
1427                 elif [ "${fstype}" = "squashfs" -o \
1428                         "${fstype}" = "ext2" -o \
1429                         "${fstype}" = "ext3" -o \
1430                         "${fstype}" = "jffs2" ]
1431                 then
1432                         # This is an ugly hack situation, the block device has
1433                         # an image directly on it.  It's hopefully
1434                         # live-initramfs, so take it and run with it.
1435                         ln -s "${devname}" "${devname}.${fstype}"
1436                         echo "${devname}.${fstype}"
1437                         return 0
1438                 fi
1439         done
1440
1441         return 1
1442 }
1443
1444 set_usplash_timeout ()
1445 {
1446         if [ -x /sbin/usplash_write ]
1447         then
1448                 /sbin/usplash_write "TIMEOUT 120"
1449         else if [ -x /sbin/splashy_update ] ; then
1450                 /sbin/splashy_update "TIMEOUT 120"
1451         fi ; fi
1452 }
1453
1454 integrity_check ()
1455 {
1456         media_mountpoint="${1}"
1457
1458         log_begin_msg "Checking media integrity"
1459
1460         cd ${media_mountpoint}
1461         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1462         RC="${?}"
1463
1464         log_end_msg
1465
1466         if [ "${RC}" -eq 0 ]
1467         then
1468                 log_success_msg "Everything ok, will reboot in 10 seconds."
1469                 sleep 10
1470                 cd /
1471                 umount ${media_mountpoint}
1472                 sync
1473                 echo u > /proc/sysrq-trigger
1474                 echo b > /proc/sysrq-trigger
1475         else
1476                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1477         fi
1478 }
1479
1480 mountroot ()
1481 {
1482         if [ -x /scripts/local-top/cryptroot ]; then
1483             /scripts/local-top/cryptroot
1484         fi
1485
1486         exec 6>&1
1487         exec 7>&2
1488         exec > live.log
1489         exec 2>&1
1490         tail -f live.log >&7 &
1491         tailpid="${!}"
1492
1493         # Ensure 'panic' function is overridden
1494         . /scripts/live-functions
1495
1496         Arguments
1497
1498         set_usplash_timeout
1499
1500         maybe_break live-premount
1501         log_begin_msg "Running /scripts/live-premount"
1502         run_scripts /scripts/live-premount
1503         log_end_msg
1504
1505         # Needed here too because some things (*cough* udev *cough*)
1506         # changes the timeout
1507
1508         set_usplash_timeout
1509
1510         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1511         then
1512                 if do_netmount
1513                 then
1514                         livefs_root="${mountpoint}"
1515                 else
1516                         panic "Unable to find a live file system on the network"
1517                 fi
1518         else
1519                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1520                 then
1521                         # Do a local boot from hd
1522                         livefs_root=${ROOT}
1523                 else
1524                         # Scan local devices for the image
1525                         i=0
1526                         while [ "$i" -lt 60 ]
1527                         do
1528                                 livefs_root=$(find_livefs ${i})
1529
1530                                 if [ -n "${livefs_root}" ]
1531                                 then
1532                                         break
1533                                 fi
1534
1535                                 sleep 1
1536                                 i="$(($i + 1))"
1537                         done
1538                 fi
1539         fi
1540
1541         if [ -z "${livefs_root}" ]
1542         then
1543                 panic "Unable to find a medium containing a live file system"
1544         fi
1545
1546         if [ "${INTEGRITY_CHECK}" ]
1547         then
1548                 integrity_check "${livefs_root}"
1549         fi
1550
1551         if [ "${TORAM}" ]
1552         then
1553                 live_dest="ram"
1554         elif [ "${TODISK}" ]
1555         then
1556                 live_dest="${TODISK}"
1557         fi
1558
1559         if [ "${live_dest}" ]
1560         then
1561                 log_begin_msg "Copying live media to ${live_dest}"
1562                 copy_live_to "${livefs_root}" "${live_dest}"
1563                 log_end_msg
1564         fi
1565
1566         if [ -n "${MODULETORAMFILE}" ]
1567         then
1568                 setup_unionfs "${livefs_root}" "${rootmnt}"
1569         else
1570                 mac="$(get_mac)"
1571                 mac="$(echo ${mac} | sed 's/-//g')"
1572                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1573         fi
1574
1575         log_end_msg
1576
1577         maybe_break live-bottom
1578         log_begin_msg "Running /scripts/live-bottom\n"
1579
1580         run_scripts /scripts/live-bottom
1581         log_end_msg
1582
1583         exec 1>&6 6>&-
1584         exec 2>&7 7>&-
1585         kill ${tailpid}
1586         cp live.log "${rootmnt}/var/log/"
1587 }