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