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="${ARGUMENT#fetch=}"
  71                                 export FETCH
  72                                 ;;
  73
  74                         forcepersistentfsck)
  75                                 FORCEPERSISTENTFSCK="Yes"
  76                                 export FORCEPERSISTENTFSCK
  77                                 ;;
  78
  79                         hook=*)
  80                                 HOOK="${ARGUMENT#hook=}"
  81                                 export HOOK
  82                                 ;;
  83
  84                         ftpfs=*)
  85                                 FTPFS="${ARGUMENT#ftpfs=}"
  86                                 export FTPFS
  87                                 ;;
  88
  89                         httpfs=*)
  90                                 HTTPFS="${ARGUMENT#httpfs=}"
  91                                 export HTTPFS
  92                                 ;;
  93
  94                         hostname=*)
  95                                 HOSTNAME="${ARGUMENT#hostname=}"
  96                                 LIVECONF="changed"
  97                                 export HOSTNAME LIVECONF
  98                                 ;;
  99
 100                         username=*)
 101                                 USERNAME="${ARGUMENT#username=}"
 102                                 LIVECONF="changed"
 103                                 export USERNAME LIVECONF
 104                                 ;;
 105
 106                         userfullname=*)
 107                                 USERFULLNAME="${ARGUMENT#userfullname=}"
 108                                 LIVECONF="changed"
 109                                 export USERFULLNAME LIVECONF
 110                                 ;;
 111
 112                         ignore_uuid)
 113                                 IGNORE_UUID="Yes"
 114                                 export IGNORE_UUID
 115                                 ;;
 116
 117                         integrity-check)
 118                                 INTEGRITY_CHECK="Yes"
 119                                 export INTEGRITY_CHECK
 120                                 ;;
 121
 122                         ip=*)
 123                                 STATICIP="${ARGUMENT#ip=}"
 124
 125                                 if [ -z "${STATICIP}" ]
 126                                 then
 127                                         STATICIP="frommedia"
 128                                 fi
 129
 130                                 export STATICIP
 131                                 ;;
 132
 133                         keyb=*|kbd-chooser/method=*)
 134                                 KBD="${ARGUMENT#*=}"
 135                                 export KBD
 136                                 ;;
 137
 138                         klayout=*|console-setup/layoutcode=*)
 139                                 KLAYOUT="${ARGUMENT#*=}"
 140                                 export KLAYOUT
 141                                 ;;
 142
 143                         kvariant=*|console-setup/variantcode=*)
 144                                 KVARIANT="${ARGUMENT#*=}"
 145                                 export KVARIANT
 146                                 ;;
 147
 148                         kmodel=*|console-setup/modelcode=*)
 149                                 KMODEL="${ARGUMENT#*=}"
 150                                 export KMODEL
 151                                 ;;
 152
 153                         koptions=*)
 154                                 KOPTIONS="${ARGUMENT#koptions=}"
 155                                 export KOPTIONS
 156                                 ;;
 157
 158                         live-getty)
 159                                 LIVE_GETTY="1"
 160                                 export LIVE_GETTY
 161                                 ;;
 162
 163                         live-media=*|bootfrom=*)
 164                                 LIVE_MEDIA="${ARGUMENT#*=}"
 165                                 export LIVE_MEDIA
 166                                 ;;
 167
 168                         live-media-encryption=*|encryption=*)
 169                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 170                                 export LIVE_MEDIA_ENCRYPTION
 171                                 ;;
 172
 173                         live-media-offset=*)
 174                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 175                                 export LIVE_MEDIA_OFFSET
 176                                 ;;
 177
 178                         live-media-path=*)
 179                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 180                                 export LIVE_MEDIA_PATH
 181                                 ;;
 182
 183                         live-media-timeout=*)
 184                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 185                                 export LIVE_MEDIA_TIMEOUT
 186                                 ;;
 187
 188                         language=*|debian-installer/language=*)
 189                                 language=${x#debian-installer/language=}
 190                                 locale="$(lang2locale "$language")"
 191                                 set_locale="true"
 192                                 ;;
 193
 194                         locale=*|debian-installer/locale=*)
 195                                 LOCALE="${ARGUMENT#*=}"
 196                                 export LOCALE
 197                                 ;;
 198
 199                         module=*)
 200                                 MODULE="${ARGUMENT#module=}"
 201                                 export MODULE
 202                                 ;;
 203
 204                         netboot=*)
 205                                 NETBOOT="${ARGUMENT#netboot=}"
 206                                 export NETBOOT
 207                                 ;;
 208
 209                         nfsopts=*)
 210                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 211                                 export NFSOPTS
 212                                 ;;
 213
 214                         nfscow=*)
 215                                 NFS_COW="${ARGUMENT#nfscow=}"
 216                                 export NFS_COW
 217                                 ;;
 218
 219                         noaccessibility)
 220                                 NOACCESSIBILITY="Yes"
 221                                 export NOACCESSIBILITY
 222                                 ;;
 223
 224                         noapparmor)
 225                                 NOAPPARMOR="Yes"
 226                                 export NOAPPARMOR
 227                                 ;;
 228
 229                         noaptcdrom)
 230                                 NOAPTCDROM="Yes"
 231                                 export NOAPTCDROM
 232                                 ;;
 233
 234                         noautologin)
 235                                 NOAUTOLOGIN="Yes"
 236                                 export NOAUTOLOGIN
 237                                 ;;
 238
 239                         noxautologin)
 240                                 NOXAUTOLOGIN="Yes"
 241                                 export NOXAUTOLOGIN
 242                                 ;;
 243
 244                         noconsolekeyboard)
 245                                 NOCONSOLEKEYBOARD="Yes"
 246                                 export NOCONSOLEKEYBOARD
 247                                 ;;
 248
 249                         nofastboot)
 250                                 NOFASTBOOT="Yes"
 251                                 export NOFASTBOOT
 252                                 ;;
 253
 254                         nofstab)
 255                                 NOFSTAB="Yes"
 256                                 export NOFSTAB
 257                                 ;;
 258
 259                         nognomepanel)
 260                                 NOGNOMEPANEL="Yes"
 261                                 export NOGNOMEPANEL
 262                                 ;;
 263
 264                         nohosts)
 265                                 NOHOSTS="Yes"
 266                                 export NOHOSTS
 267                                 ;;
 268
 269                         nokpersonalizer)
 270                                 NOKPERSONALIZER="Yes"
 271                                 export NOKPERSONALIZER
 272                                 ;;
 273
 274                         nolanguageselector)
 275                                 NOLANGUAGESELECTOR="Yes"
 276                                 export NOLANGUAGESELECTOR
 277                                 ;;
 278
 279                         nolocales)
 280                                 NOLOCALES="Yes"
 281                                 export NOLOCALES
 282                                 ;;
 283
 284                         nonetworking)
 285                                 NONETWORKING="Yes"
 286                                 export NONETWORKING
 287                                 ;;
 288
 289                         nopowermanagement)
 290                                 NOPOWERMANAGEMENT="Yes"
 291                                 export NOPOWERMANAGEMENT
 292                                 ;;
 293
 294                         noprogramcrashes)
 295                                 NOPROGRAMCRASHES="Yes"
 296                                 export NOPROGRAMCRASHES
 297                                 ;;
 298
 299                         nojockey)
 300                                 NOJOCKEY="Yes"
 301                                 export NOJOCKEY
 302                                 ;;
 303
 304                         nosudo)
 305                                 NOSUDO="Yes"
 306                                 export NOSUDO
 307                                 ;;
 308
 309                         swapon)
 310                                 SWAPON="Yes"
 311                                 export SWAPON
 312                                 ;;
 313
 314                         noupdatenotifier)
 315                                 NOUPDATENOTIFIER="Yes"
 316                                 export NOUPDATENOTIFIER
 317                                 ;;
 318
 319                         nouser)
 320                                 NOUSER="Yes"
 321                                 export NOUSER
 322                                 ;;
 323
 324                         noxautoconfig)
 325                                 NOXAUTOCONFIG="Yes"
 326                                 export NOXAUTOCONFIG
 327                                 ;;
 328
 329                         noxscreensaver)
 330                                 NOXSCREENSAVER="Yes"
 331                                 export NOXSCREENSAVER
 332                                 ;;
 333
 334                         persistent)
 335                                 PERSISTENT="Yes"
 336                                 export PERSISTENT
 337                                 ;;
 338
 339                         persistent=*)
 340                                 PERSISTENT="${ARGUMENT#persistent=}"
 341                                 if [ -z "${PERSISTENT}" ]
 342                                 then
 343                                         PERSISTENT="Yes"
 344                                 fi
 345                                 export PERSISTENT
 346                                 ;;
 347
 348                         persistent-path=*)
 349                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 350                                 export PERSISTENT_PATH
 351                                 ;;
 352
 353                         persistent-subtext=*)
 354                                 root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
 355                                 home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
 356                                 root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 357                                 home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 358                                 ;;
 359
 360                         nopersistent)
 361                                 NOPERSISTENT="Yes"
 362                                 export NOPERSISTENT
 363                                 ;;
 364
 365                         preseed/file=*|file=*)
 366                                 LOCATION="${ARGUMENT#*=}"
 367                                 export LOCATION
 368                                 ;;
 369
 370                         nopreseed)
 371                                 NOPRESEED="Yes"
 372                                 export NOPRESEED
 373                                 ;;
 374
 375                         url=*)
 376                                 location="${ARGUMENT#url=}"
 377
 378                                 mount -o bind /sys /root/sys
 379                                 mount -o bind /proc /root/proc
 380                                 mount -o bind /dev /root/dev
 381
 382                                 mkdir -p /root/var/run/network
 383                                 chroot /root dhclient eth0
 384                                 chroot /root wget -P /tmp "${location}"
 385                                 chroot /root ifconfig eth0 down
 386
 387                                 umount /root/sys
 388                                 umount /root/proc
 389                                 umount /root/dev
 390
 391                                 LOCATION="/tmp/$(basename "${location}")"
 392                                 ;;
 393
 394                         */*=*)
 395                                 question="${ARGUMENT%%=*}"
 396                                 value="${ARGUMENT#*=}"
 397                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 398                                 export PRESEEDS
 399                                 ;;
 400
 401                         showmounts)
 402                                 SHOWMOUNTS="Yes"
 403                                 export SHOWMOUNTS
 404                                 ;;
 405
 406                         silent)
 407                                 SILENT="Yes"
 408                                 export SILENT
 409                                 ;;
 410
 411                         textonly)
 412                                 TEXTONLY="Yes"
 413                                 export TEXTONLY
 414                                 ;;
 415
 416                         timezone=*)
 417                                 TIMEZONE="${ARGUMENT#timezone=}"
 418                                 export TIMEZONE
 419                                 ;;
 420
 421                         notimezone)
 422                                 NOTIMEZONE="Yes"
 423                                 export NOTIMEZONE
 424                                 ;;
 425
 426                         todisk=*)
 427                                 TODISK="${ARGUMENT#todisk=}"
 428                                 export TODISK
 429                                 ;;
 430
 431                         toram)
 432                                 TORAM="Yes"
 433                                 export TORAM
 434                                 ;;
 435
 436                         toram=*)
 437                                 TORAM="Yes"
 438                                 MODULETORAM="${ARGUMENT#toram=}"
 439                                 export TORAM MODULETORAM
 440                                 ;;
 441
 442                         exposedroot)
 443                                 EXPOSED_ROOT="Yes"
 444                                 export EXPOSED_ROOT
 445                                 ;;
 446
 447                         plainroot)
 448                                 PLAIN_ROOT="Yes"
 449                                 export PLAIN_ROOT
 450                                 ;;
 451
 452                         skipunion)
 453                                 SKIP_UNION_MOUNTS="Yes"
 454                                 export SKIP_UNION_MOUNTS
 455                                 ;;
 456
 457                         root=*)
 458                                 ROOT="${ARGUMENT#root=}"
 459                                 export ROOT
 460                                 ;;
 461
 462                         union=*)
 463                                 UNIONTYPE="${ARGUMENT#union=}"
 464                                 export UNIONTYPE
 465                                 ;;
 466
 467                         utc=*)
 468                                 UTC="${ARGUMENT#utc=}"
 469                                 export UTC
 470                                 ;;
 471
 472                         xdebconf)
 473                                 XDEBCONF="Yes"
 474                                 export XDEBCONF
 475                                 ;;
 476
 477                         xdriver=*)
 478                                 XDRIVER="${ARGUMENT#xdriver=}"
 479                                 export XDRIVER
 480                                 ;;
 481
 482                         xvideomode=*)
 483                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 484                                 export XVIDEOMODE
 485                                 ;;
 486                 esac
 487         done
 488
 489         # sort of compatibility with netboot.h from linux docs
 490         if [ -z "${NETBOOT}" ]
 491         then
 492                 if [ "${ROOT}" = "/dev/nfs" ]
 493                 then
 494                         NETBOOT="nfs"
 495                         export NETBOOT
 496                 elif [ "${ROOT}" = "/dev/cifs" ]
 497                 then
 498                         NETBOOT="cifs"
 499                         export NETBOOT
 500                 fi
 501         fi
 502
 503         if [ -z "${MODULE}" ]
 504         then
 505                 MODULE="filesystem"
 506                 export MODULE
 507         fi
 508
 509         if [ -z "${UNIONTYPE}" ]
 510         then
 511                 UNIONTYPE="aufs"
 512                 export UNIONTYPE
 513         fi
 514 }
 515
 516 is_live_path ()
 517 {
 518         DIRECTORY="${1}"
 519
 520         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 521         then
 522                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 523                 do
 524                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 525                         then
 526                                 return 0
 527                         fi
 528                 done
 529         fi
 530
 531         return 1
 532 }
 533
 534 matches_uuid ()
 535 {
 536         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 537         then
 538                 return 0
 539         fi
 540
 541         path="${1}"
 542         uuid="$(cat /conf/uuid.conf)"
 543
 544         for try_uuid_file in "${path}/.disk/live-uuid"*
 545         do
 546                 [ -e "${try_uuid_file}" ] || continue
 547
 548                 try_uuid="$(cat "${try_uuid_file}")"
 549
 550                 if [ "${uuid}" = "${try_uuid}" ]
 551                 then
 552                         return 0
 553                 fi
 554         done
 555
 556         return 1
 557 }
 558
 559 get_backing_device ()
 560 {
 561         case "${1}" in
 562                 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 563                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 564                         ;;
 565
 566                 *.dir)
 567                         echo "directory"
 568                         ;;
 569
 570                 *)
 571                         panic "Unrecognized live filesystem: ${1}"
 572                         ;;
 573         esac
 574 }
 575
 576 match_files_in_dir ()
 577 {
 578         # Does any files match pattern ${1} ?
 579         local pattern="${1}"
 580
 581         if [ "$(echo ${pattern})" != "${pattern}" ]
 582         then
 583                 return 0
 584         fi
 585
 586         return 1
 587 }
 588
 589 mount_images_in_directory ()
 590 {
 591         directory="${1}"
 592         rootmnt="${2}"
 593         mac="${3}"
 594
 595
 596         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 597                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 598                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 599                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 600                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 601                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 602         then
 603                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 604                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 605         else
 606                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 607         fi
 608 }
 609
 610 is_nice_device ()
 611 {
 612         sysfs_path="${1#/sys}"
 613
 614         if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-)"
 615         then
 616                 return 0
 617         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 618         then
 619                 return 0
 620         fi
 621
 622         return 1
 623 }
 624
 625 copy_live_to ()
 626 {
 627         copyfrom="${1}"
 628         copytodev="${2}"
 629         copyto="${copyfrom}_swap"
 630
 631         if [ -z "${MODULETORAM}" ]
 632         then
 633                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 634         else
 635                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 636
 637                 if [ -f "${MODULETORAMFILE}" ]
 638                 then
 639                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 640                 else
 641                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 642                         return 1
 643                 fi
 644         fi
 645
 646         if [ "${copytodev}" = "ram" ]
 647         then
 648                 # copying to ram:
 649                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo ) )
 650                 mount_options="-o size=${size}k"
 651                 free_string="memory"
 652                 fstype="tmpfs"
 653                 dev="/dev/shm"
 654         else
 655                 # it should be a writable block device
 656                 if [ -b "${copytodev}" ]
 657                 then
 658                         dev="${copytodev}"
 659                         free_string="space"
 660                         fstype=$(get_fstype "${dev}")
 661                         freespace=$(fs_size "${dev}")
 662                 else
 663                         log_warning_msg "${copytodev} is not a block device."
 664                         return 1
 665                 fi
 666         fi
 667
 668         if [ "${freespace}" -lt "${size}" ]
 669         then
 670                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 671                 return 1
 672         fi
 673
 674         # begin copying (or uncompressing)
 675         mkdir "${copyto}"
 676         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 677         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 678
 679         if [ "${extension}" = "tgz" ]
 680         then
 681                 cd "${copyto}"
 682                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 683                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 684                 mount -r -o move "${copyto}" "${rootmnt}"
 685                 cd "${OLDPWD}"
 686         else
 687                 if [ -n "${MODULETORAMFILE}" ]
 688                 then
 689                         if [ -x /bin/rsync ]
 690                         then
 691                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 692                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 693                         else
 694                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 695                         fi
 696                 else
 697                         if [ -x /bin/rsync ]
 698                         then
 699                                 echo " * Copying whole medium to RAM" 1>/dev/console
 700                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 701                         else
 702                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 703                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}   # "cp -a" from busybox also copies hidden files
 704                         fi
 705                 fi
 706
 707                 umount ${copyfrom}
 708                 mount -r -o move ${copyto} ${copyfrom}
 709         fi
 710
 711         rmdir ${copyto}
 712         return 0
 713 }
 714
 715 do_netmount ()
 716 {
 717         rc=1
 718
 719         modprobe -q af_packet # For DHCP
 720
 721         if [ -x /sbin/udevadm ]
 722         then
 723                 # lenny
 724                 udevadm trigger
 725                 udevadm settle
 726         else
 727                 # etch
 728                 udevtrigger
 729                 udevsettle
 730         fi
 731
 732         ipconfig ${DEVICE} | tee /netboot.config
 733
 734         # source relevant ipconfig output
 735         OLDHOSTNAME=${HOSTNAME}
 736         . /tmp/net-${DEVICE}.conf
 737         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 738         export HOSTNAME
 739
 740         # Check if we have a network device at all
 741         if ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 742            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 743            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 744            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 745         then
 746                 panic "No supported network device found, maybe a non-mainline driver is required."
 747         fi
 748
 749         if [ "${NFSROOT}" = "auto" ]
 750         then
 751                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 752         fi
 753
 754         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] ) && do_httpmount
 755         then
 756                 rc=0
 757                 return ${rc}
 758         fi
 759
 760         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 761         then
 762                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 763         fi
 764
 765         log_begin_msg "Trying netboot from ${NFSROOT}"
 766
 767         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 768         then
 769                 rc=0
 770         elif do_nfsmount
 771         then
 772                 NETBOOT="nfs"
 773                 export NETBOOT
 774                 rc=0
 775         fi
 776
 777         log_end_msg
 778         return ${rc}
 779 }
 780
 781 do_httpmount ()
 782 {
 783         rc=1
 784         dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 785         mount -t ramfs ram "${mountpoint}"
 786         mkdir -p "${dest}"
 787
 788         for webfile in HTTPFS FTPFS FETCH
 789         do
 790                 url="$(eval echo \"\$\{${webfile}\}\")"
 791                 extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 792
 793                 if [ -n "$url" ]
 794                 then
 795                         case "${extension}" in
 796                                 squashfs|tgz|tar)
 797                                         if [ "${webfile}" = "FETCH" ]
 798                                         then
 799                                                 case "$url" in
 800                                                         tftp*)
 801                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 802                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 803                                                                 lfile="$(basename $url)"
 804                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 805                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 806                                                         ;;
 807
 808                                                         *)
 809                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 810                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 811                                                                 ;;
 812                                                 esac
 813                                         else
 814                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 815                                                 if [ "${webfile}" = "FTPFS" ]
 816                                                 then
 817                                                         FUSE_MOUNT="curlftpfs"
 818                                                         url="$(dirname ${url})"
 819                                                 else
 820                                                         FUSE_MOUNT="httpfs"
 821                                                 fi
 822                                                 modprobe fuse
 823                                                 $FUSE_MOUNT "${url}" "${dest}"
 824                                         fi
 825                                         [ ${?} -eq 0 ] && rc=0
 826                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 827                                         break
 828                                         ;;
 829
 830                                 *)
 831                                         log_begin_msg "Unrecognized archive extension for ${url}"
 832                                         ;;
 833                         esac
 834                 fi
 835         done
 836
 837         if [ ${rc} != 0 ]
 838         then
 839             umount "${mountpoint}"
 840         fi
 841
 842         return ${rc}
 843 }
 844
 845 do_nfsmount ()
 846 {
 847         rc=1
 848
 849         modprobe -q nfs
 850
 851         if [ -z "${NFSOPTS}" ]
 852         then
 853                 NFSOPTS=""
 854         fi
 855
 856         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 857
 858         # FIXME: This while loop is an ugly HACK round an nfs bug
 859         i=0
 860         while [ "$i" -lt 60 ]
 861         do
 862                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 863                 sleep 1
 864                 i="$(($i + 1))"
 865         done
 866
 867         return ${rc}
 868 }
 869
 870 do_cifsmount ()
 871 {
 872         rc=1
 873
 874         if [ -x "/sbin/mount.cifs" ]
 875         then
 876                 if [ -z "${NFSOPTS}" ]
 877                 then
 878                         CIFSOPTS="-ouser=root,password="
 879                 else
 880                         CIFSOPTS="${NFSOPTS}"
 881                 fi
 882
 883                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 884                 modprobe -q cifs
 885
 886                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 887                 then
 888                         rc=0
 889                 fi
 890         fi
 891
 892         return ${rc}
 893 }
 894
 895 do_snap_copy ()
 896 {
 897         fromdev="${1}"
 898         todir="${2}"
 899         snap_type="${3}"
 900         size=$(fs_size "${fromdev}" "" "used")
 901
 902         if [ -b "${fromdev}" ]
 903         then
 904                 # look for free mem
 905                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 906                 then
 907                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 908                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 909                 else
 910                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo))
 911                 fi
 912
 913                 tomount="/mnt/tmpsnap"
 914
 915                 if [ ! -d "${tomount}" ]
 916                 then
 917                         mkdir -p "${tomount}"
 918                 fi
 919
 920                 fstype=$(get_fstype "${fromdev}")
 921
 922                 if [ -n "${fstype}" ]
 923                 then
 924                         # Copying stuff...
 925                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 926                         cp -a "${tomount}"/* ${todir}
 927                         umount "${tomount}"
 928                 else
 929                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 930                 fi
 931
 932                 rmdir "${tomount}"
 933
 934                 if echo ${fromdev} | grep -qs loop
 935                 then
 936                         losetup -d "${fromdev}"
 937                 fi
 938
 939                 return 0
 940         else
 941                 return 1
 942
 943                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 944         fi
 945 }
 946
 947 find_snap ()
 948 {
 949         # Look for ${snap_label}.* in block devices
 950         snap_label="${1}"
 951
 952         if [ "${PERSISTENT}" != "nofiles" ]
 953         then
 954                 # search for image files
 955                 snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.ext4 ${snap_label}.jffs2")
 956         fi
 957
 958         if [ -z "${snapdata}" ]
 959         then
 960                 snapdata=$(find_cow_device "${snap_label}")
 961         fi
 962         echo "${snapdata}"
 963 }
 964
 965 try_snap ()
 966 {
 967         # copy the contents of previously found snapshot to ${snap_mount}
 968         # and remember the device and filename for resync on exit in live-initramfs.init
 969
 970         snapdata="${1}"
 971         snap_mount="${2}"
 972         snap_type="${3}"
 973
 974         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
 975         then
 976                 log_success_msg "found snapshot: ${snapdata}"
 977                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 978                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 979                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 980
 981                 RES=""
 982                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 983                 then
 984                         break
 985                 fi
 986
 987                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
 988                 then
 989                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
 990                         dev=$(get_backing_device "${snapback}/${snapfile}")
 991
 992                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 993                         RES=$?
 994                 else
 995                         # cpio.gz snapshot
 996                         cd "${snap_mount}"
 997                         zcat "${snapback}/${snapfile}" | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories > /dev/null 2>&1
 998                         RES=$?
 999                         if [ "${RES}" != "0" ]
1000                         then
1001                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories\""
1002                         fi
1003                         cd "${OLDPWD}"
1004                 fi
1005
1006                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1007
1008                 if [ "${RES}" != "0" ]
1009                 then
1010                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1011                 fi
1012
1013         elif [ -b "${snapdata}" ]
1014         then
1015                 # Try to find if it could be a snapshot partition
1016                 dev="${snapdata}"
1017                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1018                 if echo "${dev}" | grep -qs loop
1019                 then
1020                         # strange things happens, user confused?
1021                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1022                         snapfile=$(basename ${snaploop})
1023                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1024                 else
1025                         snapdev="${dev}"
1026                 fi
1027
1028                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1029                 then
1030                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1031                         return 1
1032                 else
1033                         if [ -n "${snapfile}" ]
1034                         then
1035                                 # it was a loop device, user confused
1036                                 umount ${snapdev}
1037                         fi
1038                 fi
1039         else
1040                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1041                 return 1
1042         fi
1043
1044         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1045         return 0
1046 }
1047
1048 setup_unionfs ()
1049 {
1050         image_directory="${1}"
1051         rootmnt="${2}"
1052         addimage_directory="${3}"
1053         modprobe -q -b ${UNIONTYPE}
1054
1055         # run-init can't deal with images in a subdir, but we're going to
1056         # move all of these away before it runs anyway.  No, we're not,
1057         # put them in / since move-mounting them into / breaks mono and
1058         # some other apps.
1059
1060         croot="/"
1061
1062         # Let's just mount the read-only file systems first
1063         rofsstring=""
1064         rofslist=""
1065         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
1066
1067         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
1068         then
1069                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
1070                 roopt="nfsro"
1071         elif [ "${UNIONTYPE}" = "aufs" ]
1072         then
1073                 roopt="rr"
1074         else
1075                 roopt="ro"
1076         fi
1077
1078         if [ -z "${PLAIN_ROOT}" ]
1079         then
1080                 # Read image names from ${MODULE}.module if it exists
1081                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1082                 then
1083                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1084                         do
1085                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1086                         done
1087                 elif [ -e "${image_directory}/${MODULE}.module" ]
1088                 then
1089                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1090                         do
1091                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1092                         done
1093                 else
1094                         # ${MODULE}.module does not exist, create a list of images
1095                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1096                         do
1097                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1098                                 do
1099                                         if [ -e "${IMAGE}" ]
1100                                         then
1101                                                 image_string="${image_string} ${IMAGE}"
1102                                         fi
1103                                 done
1104                         done
1105
1106                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1107                         then
1108                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1109                                 do
1110                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1111                                         do
1112                                                 if [ -e "${IMAGE}" ]
1113                                                 then
1114                                                         image_string="${image_string} ${IMAGE}"
1115                                                 fi
1116                                         done
1117                                 done
1118                         fi
1119
1120                         # Now sort the list
1121                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1122                 fi
1123
1124         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1125
1126                 mkdir -p "${croot}"
1127
1128                 for image in ${image_string}
1129                 do
1130                         imagename=$(basename "${image}")
1131
1132                         export image devname
1133                         maybe_break live-realpremount
1134                         log_begin_msg "Running /scripts/live-realpremount"
1135                         run_scripts /scripts/live-realpremount
1136                         log_end_msg
1137
1138                         if [ -d "${image}" ]
1139                         then
1140                                 # it is a plain directory: do nothing
1141                                 rofsstring="${image}=${roopt}:${rofsstring}"
1142                                 rofslist="${image} ${rofslist}"
1143                         elif [ -f "${image}" ]
1144                         then
1145                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1146                                 then
1147                                         backdev=$(get_backing_device "${image}" "-r")
1148                                 else
1149                                         backdev=$(get_backing_device "${image}")
1150                                 fi
1151                                 fstype=$(get_fstype "${backdev}")
1152
1153                                 if [ "${fstype}" = "unknown" ]
1154                                 then
1155                                         panic "Unknown file system type on ${backdev} (${image})"
1156                                 fi
1157
1158                                 if [ -z "${fstype}" ]
1159                                 then
1160                                         fstype="${imagename##*.}"
1161                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1162                                 fi
1163
1164                                 mkdir -p "${croot}/${imagename}"
1165                                 log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1166                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1167                                 log_end_msg
1168                         fi
1169                 done
1170         else
1171                 # we have a plain root system
1172                 mkdir -p "${croot}/filesystem"
1173                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1174                 mount -t $(get_fstype "${image_directory}") -o ro,noatime "${image_directory}" "${croot}/filesystem" || panic "Can not mount ${image_directory} on ${croot}/filesystem" && rofsstring="${croot}/filesystem=${roopt}:${rofsstring}" && rofslist="${croot}/filesystem ${rofslist}"
1175                 # probably broken:
1176                 mount -o bind ${croot}/filesystem $mountpoint
1177                 log_end_msg
1178         fi
1179
1180         rofsstring=${rofsstring%:}
1181
1182         mkdir -p /cow
1183
1184         # Looking for "${root_persistence}" device or file
1185         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1186         then
1187                 # Load USB modules
1188                 num_block=$(ls -l /sys/block | wc -l)
1189                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1190                 do
1191                         modprobe -q -b ${module}
1192                 done
1193
1194                 if [ -x /sbin/udevadm ]
1195                 then
1196                         # lenny
1197                         udevadm trigger
1198                         udevadm settle
1199                 else
1200                         # etch
1201                         udevtrigger
1202                         udevsettle
1203                 fi
1204
1205                 # For some reason, udevsettle does not block in this scenario,
1206                 # so we sleep for a little while.
1207                 #
1208                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1209                 for timeout in 5 4 3 2 1
1210                 do
1211                         sleep 1
1212
1213                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1214                         then
1215                                 break
1216                         fi
1217                 done
1218
1219                 # search for label and files (this could be hugely optimized)
1220                 cowprobe=$(find_cow_device "${root_persistence}")
1221                 if [ -b "${cowprobe}" ]
1222                 then
1223                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1224                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1225                         # snapshots to be sure to really store some e.g key config files,
1226                         # but not on the same media
1227                         blacklistdev="${cowprobe}"
1228                         PERSISTENCE_IS_ON="1"
1229                         export PERSISTENCE_IS_ON
1230                 fi
1231                 # homecow just mount something on /home, this should be generalized some way
1232                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1233                 if [ -b "${homecow}" ]
1234                 then
1235                         PERSISTENCE_IS_ON="1"
1236                         export PERSISTENCE_IS_ON
1237                 fi
1238                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1239                 # This second type should be removed when snapshot will get smarter,
1240                 # hence when "/etc/live-snapshot*list" will be supported also by
1241                 # ext2|ext3|ext4|jffs2 snapshot types.
1242                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1243
1244                 if [ -b "${cowprobe}" ]
1245                 then
1246                         cowdevice=${cowprobe}
1247                         cow_fstype=$(get_fstype "${cowprobe}")
1248                         cow_mountopt="rw,noatime"
1249
1250                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1251                         then
1252                                 fsck -y ${cowdevice}
1253                         fi
1254                 else
1255                         log_warning_msg "Unable to find the persistent medium"
1256                         cowdevice="tmpfs"
1257                         cow_fstype="tmpfs"
1258                         cow_mountopt="rw,noatime,mode=755"
1259                 fi
1260         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1261         then
1262                 # check if there are any nfs options
1263                 if echo ${NFS_COW}|grep -q ','
1264                 then
1265                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1266                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1267                 else
1268                         nfs_cow_opts="-o nolock"
1269                         nfs_cow=${NFS_COW}
1270                 fi
1271                 mac="$(get_mac)"
1272                 if [ -n "${mac}" ]
1273                 then
1274                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1275                         cow_fstype="nfs"
1276                 else
1277                         panic "unable to determine mac address"
1278                 fi
1279         else
1280                 cowdevice="tmpfs"
1281                 cow_fstype="tmpfs"
1282                 cow_mountopt="rw,noatime,mode=755"
1283         fi
1284
1285         if [ "${cow_fstype}" = "nfs" ]
1286         then
1287                 log_begin_msg \
1288                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1289                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1290                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1291         else
1292                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1293                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1294         fi
1295
1296         rofscount=$(echo ${rofslist} |wc -w)
1297
1298         if [ -n "${EXPOSED_ROOT}" ]
1299         then
1300                 if [ ${rofscount} -ne 1 ]
1301                 then
1302                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1303                 fi
1304                 exposedrootfs=${rofslist%% }
1305
1306                 mount --bind ${exposedrootfs} ${rootmnt} || \
1307                         panic "bind mount of ${exposedrootfs} failed"
1308
1309                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1310                 then
1311                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1312                 else
1313                         cow_dirs=''
1314                 fi
1315
1316                 for dir in ${cow_dirs}; do
1317                         mkdir -p /cow${dir}
1318                         mount -t ${UNIONTYPE} \
1319                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1320                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1321                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1322                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1323                 done
1324         else
1325                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1326                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1327                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1328         fi
1329
1330         # Correct the permissions of /:
1331         chmod 0755 "${rootmnt}"
1332
1333         # tmpfs file systems
1334         touch /etc/fstab
1335         mkdir -p "${rootmnt}/live"
1336         mount -t tmpfs tmpfs ${rootmnt}/live
1337
1338         # Adding other custom mounts
1339         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1340         then
1341                 # directly mount /home
1342                 # FIXME: add a custom mounts configurable system
1343
1344                 if [ -b "${homecow}" ]
1345                 then
1346                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1347                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1348                 else
1349                         log_warning_msg "Unable to find the persistent home medium"
1350                 fi
1351
1352                 # Look for other snapshots to copy in
1353                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1354                 # This second type should be removed when snapshot grow smarter
1355                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1356         fi
1357
1358         if [ -n "${SHOWMOUNTS}" ]
1359         then
1360                 for d in ${rofslist}
1361                 do
1362                         mkdir -p "${rootmnt}/live/${d##*/}"
1363
1364                         case d in
1365                                 *.dir)
1366                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1367                                         ;;
1368
1369                                 *)
1370                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1371                                         ;;
1372                         esac
1373                 done
1374         fi
1375
1376         # shows cow fs on /cow for use by live-snapshot
1377         mkdir -p "${rootmnt}/live/cow"
1378         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 ${rootmnt}/live/cow"
1379 }
1380
1381 check_dev ()
1382 {
1383         sysdev="${1}"
1384         devname="${2}"
1385         skip_uuid_check="${3}"
1386
1387         if [ -z "${devname}" ]
1388         then
1389                 devname=$(sys2dev "${sysdev}")
1390         fi
1391
1392         if [ -d "${devname}" ]
1393         then
1394                 mount -o bind "${devname}" $mountpoint || continue
1395
1396                 if is_live_path $mountpoint
1397                 then
1398                         echo $mountpoint
1399                         return 0
1400                 else
1401                         umount $mountpoint
1402                 fi
1403         fi
1404
1405         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1406         then
1407                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1408                 devname="${loopdevname}"
1409         fi
1410
1411         fstype=$(get_fstype "${devname}")
1412
1413         if is_supported_fs ${fstype}
1414         then
1415                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1416
1417                 if is_live_path ${mountpoint} && \
1418                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1419                 then
1420                         echo ${mountpoint}
1421                         return 0
1422                 else
1423                         umount ${mountpoint}
1424                 fi
1425         fi
1426
1427         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1428         then
1429                 losetup -d "${loopdevname}"
1430         fi
1431
1432         return 1
1433 }
1434
1435 find_livefs ()
1436 {
1437         timeout="${1}"
1438
1439         # don't start autodetection before timeout has expired
1440         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1441         then
1442                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1443                 then
1444                         return 1
1445                 fi
1446         fi
1447
1448         # first look at the one specified in the command line
1449         case "${LIVE_MEDIA}" in
1450                 removable-usb)
1451                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1452                         do
1453                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1454                                 then
1455                                         if readlink ${sysblock} | grep -q usb ||
1456                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1457                                         then
1458                                                 for dev in $(subdevices "${sysblock}")
1459                                                 do
1460                                                         if check_dev "${dev}"
1461                                                         then
1462                                                                 return 0
1463                                                         fi
1464                                                 done
1465                                         fi
1466                                 fi
1467                         done
1468                         ;;
1469
1470                 removable)
1471                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1472                         do
1473                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1474                                 then
1475                                         for dev in $(subdevices "${sysblock}")
1476                                         do
1477                                                 if check_dev "${dev}"
1478                                                 then
1479                                                         return 0
1480                                                 fi
1481                                         done
1482                                 fi
1483                         done
1484                         ;;
1485
1486                 *)
1487                         if [ ! -z "${LIVE_MEDIA}" ]
1488                         then
1489                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1490                                 then
1491                                         return 0
1492                                 fi
1493                         fi
1494                         ;;
1495         esac
1496
1497         # or do the scan of block devices
1498         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1499         do
1500                 devname=$(sys2dev "${sysblock}")
1501                 fstype=$(get_fstype "${devname}")
1502
1503                 if /lib/udev/cdrom_id ${devname} > /dev/null
1504                 then
1505                         if check_dev "null" "${devname}"
1506                         then
1507                                 return 0
1508                         fi
1509                 elif is_nice_device "${sysblock}"
1510                 then
1511                         for dev in $(subdevices "${sysblock}")
1512                         do
1513                                 if check_dev "${dev}"
1514                                 then
1515                                         return 0
1516                                 fi
1517                         done
1518                 elif [ "${fstype}" = "squashfs" -o \
1519                         "${fstype}" = "ext2" -o \
1520                         "${fstype}" = "ext3" -o \
1521                         "${fstype}" = "ext4" -o \
1522                         "${fstype}" = "jffs2" ]
1523                 then
1524                         # This is an ugly hack situation, the block device has
1525                         # an image directly on it.  It's hopefully
1526                         # live-initramfs, so take it and run with it.
1527                         ln -s "${devname}" "${devname}.${fstype}"
1528                         echo "${devname}.${fstype}"
1529                         return 0
1530                 fi
1531         done
1532
1533         return 1
1534 }
1535
1536 set_usplash_timeout ()
1537 {
1538         if [ -x /sbin/usplash_write ]
1539         then
1540                 /sbin/usplash_write "TIMEOUT 120"
1541         else if [ -x /sbin/splashy_update ] ; then
1542                 /sbin/splashy_update "TIMEOUT 120"
1543         fi ; fi
1544 }
1545
1546 integrity_check ()
1547 {
1548         media_mountpoint="${1}"
1549
1550         log_begin_msg "Checking media integrity"
1551
1552         cd ${media_mountpoint}
1553         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1554         RC="${?}"
1555
1556         log_end_msg
1557
1558         if [ "${RC}" -eq 0 ]
1559         then
1560                 log_success_msg "Everything ok, will reboot in 10 seconds."
1561                 sleep 10
1562                 cd /
1563                 umount ${media_mountpoint}
1564                 sync
1565                 echo u > /proc/sysrq-trigger
1566                 echo b > /proc/sysrq-trigger
1567         else
1568                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1569         fi
1570 }
1571
1572 mountroot ()
1573 {
1574         if [ -x /scripts/local-top/cryptroot ]; then
1575             /scripts/local-top/cryptroot
1576         fi
1577
1578         exec 6>&1
1579         exec 7>&2
1580         exec > live.log
1581         exec 2>&1
1582         tail -f live.log >&7 &
1583         tailpid="${!}"
1584
1585         # Ensure 'panic' function is overridden
1586         . /scripts/live-functions
1587
1588         Arguments
1589
1590         set_usplash_timeout
1591
1592         maybe_break live-premount
1593         log_begin_msg "Running /scripts/live-premount"
1594         run_scripts /scripts/live-premount
1595         log_end_msg
1596
1597         # Needed here too because some things (*cough* udev *cough*)
1598         # changes the timeout
1599
1600         set_usplash_timeout
1601
1602         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1603         then
1604                 if do_netmount
1605                 then
1606                         livefs_root="${mountpoint}"
1607                 else
1608                         panic "Unable to find a live file system on the network"
1609                 fi
1610         else
1611                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1612                 then
1613                         # Do a local boot from hd
1614                         livefs_root=${ROOT}
1615                 else
1616                         # Scan local devices for the image
1617                         i=0
1618                         while [ "$i" -lt 60 ]
1619                         do
1620                                 livefs_root=$(find_livefs ${i})
1621
1622                                 if [ -n "${livefs_root}" ]
1623                                 then
1624                                         break
1625                                 fi
1626
1627                                 sleep 1
1628                                 i="$(($i + 1))"
1629                         done
1630                 fi
1631         fi
1632
1633         if [ -z "${livefs_root}" ]
1634         then
1635                 panic "Unable to find a medium containing a live file system"
1636         fi
1637
1638         if [ "${INTEGRITY_CHECK}" ]
1639         then
1640                 integrity_check "${livefs_root}"
1641         fi
1642
1643         if [ "${TORAM}" ]
1644         then
1645                 live_dest="ram"
1646         elif [ "${TODISK}" ]
1647         then
1648                 live_dest="${TODISK}"
1649         fi
1650
1651         if [ "${live_dest}" ]
1652         then
1653                 log_begin_msg "Copying live media to ${live_dest}"
1654                 copy_live_to "${livefs_root}" "${live_dest}"
1655                 log_end_msg
1656         fi
1657
1658         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1659         then
1660                 setup_unionfs "${livefs_root}" "${rootmnt}"
1661         else
1662                 mac="$(get_mac)"
1663                 mac="$(echo ${mac} | sed 's/-//g')"
1664                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1665         fi
1666
1667         log_end_msg
1668
1669         maybe_break live-bottom
1670         log_begin_msg "Running /scripts/live-bottom\n"
1671
1672         run_scripts /scripts/live-bottom
1673         log_end_msg
1674
1675         exec 1>&6 6>&-
1676         exec 2>&7 7>&-
1677         kill ${tailpid}
1678         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1679 }