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                         skipconfig)
  53                                 NOACCESSIBILITY="Yes"
  54                                 NOAPPARMOR="Yes"
  55                                 NOAPTCDROM="Yes"
  56                                 NOAUTOLOGIN="Yes"
  57                                 NOCONSOLEKEYBOARD="Yes"
  58                                 NOFASTBOOT="Yes"
  59                                 NOFSTAB="Yes"
  60                                 NOGNOMEPANEL="Yes"
  61                                 NOHOSTS="Yes"
  62                                 NOJOCKEY="Yes"
  63                                 NOKPERSONALIZER="Yes"
  64                                 NOLANGUAGESELECTOR="Yes"
  65                                 NOLOCALES="Yes"
  66                                 NONETWORKING="Yes"
  67                                 NOPOLKITCONF="Yes"
  68                                 NOPOWERMANAGEMENT="Yes"
  69                                 NOPROGRAMCRASHES="Yes"
  70                                 NOSUDO="Yes"
  71                                 NOTIMEZONE="Yes"
  72                                 NOUPDATENOTIFIER="Yes"
  73                                 NOUSER="Yes"
  74                                 NOXAUTOCONFIG="Yes"
  75                                 NOXAUTOLOGIN="Yes"
  76                                 NOXSCREENSAVER="Yes"
  77
  78                                 export NOACCESSIBILITY NOAPPARMOR NOAPTCDROM NOAUTOLOGIN NOCONSOLEKEYBOARD NOFASTBOOT NOFSTAB NOGNOMEPANEL NOHOSTS NOJOCKEY NOKPERSONALIZER NOLANGUAGESELECTOR NOLOCALES NONETWORKING NOPOLKITCONF NOPOWERMANAGEMENT NOPROGRAMCRASHES NOSUDO NOTIMEZONE NOUPDATENOTIFIER NOUSER NOXAUTOCONFIG NOXAUTOLOGIN NOXSCREENSAVER
  79                                 ;;
  80
  81                         access=*)
  82                                 ACCESS="${ARGUMENT#access=}"
  83                                 export ACCESS
  84                                 ;;
  85
  86                         console=*)
  87                                 DEFCONSOLE="${ARGUMENT#*=}"
  88                                 export DEFCONSOLE
  89                                 ;;
  90
  91                         debug)
  92                                 DEBUG="Yes"
  93                                 export DEBUG
  94
  95                                 set -x
  96                                 ;;
  97
  98                         ethdevice=*)
  99                                 DEVICE="${ARGUMENT#ethdevice=}"
 100                                 export DEVICE
 101                                 ;;
 102
 103                         ethdevice=*)
 104                                 ETHDEVICE="${ARGUMENT#ethdevice=}"
 105                                 export ETHDEVICE
 106                                 ;;
 107
 108                         ethdevice-timeout=*)
 109                                 ETHDEV_TIMEOUT="${ARGUMENT#ethdevice-timeout=}"
 110                                 export ETHDEV_TIMEOUT
 111                                 ;;
 112
 113                         fetch=*)
 114                                 FETCH="${ARGUMENT#fetch=}"
 115                                 export FETCH
 116                                 ;;
 117
 118                         forcepersistentfsck)
 119                                 FORCEPERSISTENTFSCK="Yes"
 120                                 export FORCEPERSISTENTFSCK
 121                                 ;;
 122
 123                         hook=*)
 124                                 HOOK="${ARGUMENT#hook=}"
 125                                 export HOOK
 126                                 ;;
 127
 128                         ftpfs=*)
 129                                 FTPFS="${ARGUMENT#ftpfs=}"
 130                                 export FTPFS
 131                                 ;;
 132
 133                         httpfs=*)
 134                                 HTTPFS="${ARGUMENT#httpfs=}"
 135                                 export HTTPFS
 136                                 ;;
 137
 138                         hostname=*)
 139                                 HOSTNAME="${ARGUMENT#hostname=}"
 140                                 LIVECONF="changed"
 141                                 export HOSTNAME LIVECONF
 142                                 ;;
 143
 144                         isofrom=*|fromiso=*)
 145                                 FROMISO="${ARGUMENT#*=}"
 146                                 export FROMISO
 147                                 ;;
 148
 149                         username=*)
 150                                 USERNAME="${ARGUMENT#username=}"
 151                                 LIVECONF="changed"
 152                                 export USERNAME LIVECONF
 153                                 ;;
 154
 155                         userfullname=*)
 156                                 USERFULLNAME="${ARGUMENT#userfullname=}"
 157                                 LIVECONF="changed"
 158                                 export USERFULLNAME LIVECONF
 159                                 ;;
 160
 161                         ignore_uuid)
 162                                 IGNORE_UUID="Yes"
 163                                 export IGNORE_UUID
 164                                 ;;
 165
 166                         integrity-check)
 167                                 INTEGRITY_CHECK="Yes"
 168                                 export INTEGRITY_CHECK
 169                                 ;;
 170
 171                         ip=*)
 172                                 STATICIP="${ARGUMENT#ip=}"
 173
 174                                 if [ -z "${STATICIP}" ]
 175                                 then
 176                                         STATICIP="frommedia"
 177                                 fi
 178
 179                                 export STATICIP
 180                                 ;;
 181
 182                         keyb=*|kbd-chooser/method=*)
 183                                 KBD="${ARGUMENT#*=}"
 184                                 export KBD
 185                                 ;;
 186
 187                         klayout=*|console-setup/layoutcode=*)
 188                                 KLAYOUT="${ARGUMENT#*=}"
 189                                 export KLAYOUT
 190                                 ;;
 191
 192                         kvariant=*|console-setup/variantcode=*)
 193                                 KVARIANT="${ARGUMENT#*=}"
 194                                 export KVARIANT
 195                                 ;;
 196
 197                         kmodel=*|console-setup/modelcode=*)
 198                                 KMODEL="${ARGUMENT#*=}"
 199                                 export KMODEL
 200                                 ;;
 201
 202                         koptions=*)
 203                                 KOPTIONS="${ARGUMENT#koptions=}"
 204                                 export KOPTIONS
 205                                 ;;
 206
 207                         live-getty)
 208                                 LIVE_GETTY="1"
 209                                 export LIVE_GETTY
 210                                 ;;
 211
 212                         live-media=*|bootfrom=*)
 213                                 LIVE_MEDIA="${ARGUMENT#*=}"
 214                                 export LIVE_MEDIA
 215                                 ;;
 216
 217                         live-media-encryption=*|encryption=*)
 218                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 219                                 export LIVE_MEDIA_ENCRYPTION
 220                                 ;;
 221
 222                         live-media-offset=*)
 223                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 224                                 export LIVE_MEDIA_OFFSET
 225                                 ;;
 226
 227                         live-media-path=*)
 228                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 229                                 export LIVE_MEDIA_PATH
 230                                 ;;
 231
 232                         live-media-timeout=*)
 233                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 234                                 export LIVE_MEDIA_TIMEOUT
 235                                 ;;
 236
 237                         language=*|debian-installer/language=*)
 238                                 language=${x#debian-installer/language=}
 239                                 locale="$(lang2locale "$language")"
 240                                 set_locale="true"
 241                                 ;;
 242
 243                         locale=*|debian-installer/locale=*)
 244                                 LOCALE="${ARGUMENT#*=}"
 245                                 export LOCALE
 246                                 ;;
 247
 248                         module=*)
 249                                 MODULE="${ARGUMENT#module=}"
 250                                 export MODULE
 251                                 ;;
 252
 253                         netboot=*)
 254                                 NETBOOT="${ARGUMENT#netboot=}"
 255                                 export NETBOOT
 256                                 ;;
 257
 258                         nfsopts=*)
 259                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 260                                 export NFSOPTS
 261                                 ;;
 262
 263                         nfscow=*)
 264                                 NFS_COW="${ARGUMENT#nfscow=}"
 265                                 export NFS_COW
 266                                 ;;
 267
 268                         noaccessibility)
 269                                 NOACCESSIBILITY="Yes"
 270                                 export NOACCESSIBILITY
 271                                 ;;
 272
 273                         noapparmor)
 274                                 NOAPPARMOR="Yes"
 275                                 export NOAPPARMOR
 276                                 ;;
 277
 278                         noaptcdrom)
 279                                 NOAPTCDROM="Yes"
 280                                 export NOAPTCDROM
 281                                 ;;
 282
 283                         noautologin)
 284                                 NOAUTOLOGIN="Yes"
 285                                 export NOAUTOLOGIN
 286                                 ;;
 287
 288                         noxautologin)
 289                                 NOXAUTOLOGIN="Yes"
 290                                 export NOXAUTOLOGIN
 291                                 ;;
 292
 293                         noconsolekeyboard)
 294                                 NOCONSOLEKEYBOARD="Yes"
 295                                 export NOCONSOLEKEYBOARD
 296                                 ;;
 297
 298                         nofastboot)
 299                                 NOFASTBOOT="Yes"
 300                                 export NOFASTBOOT
 301                                 ;;
 302
 303                         nofstab)
 304                                 NOFSTAB="Yes"
 305                                 export NOFSTAB
 306                                 ;;
 307
 308                         nognomepanel)
 309                                 NOGNOMEPANEL="Yes"
 310                                 export NOGNOMEPANEL
 311                                 ;;
 312
 313                         nohosts)
 314                                 NOHOSTS="Yes"
 315                                 export NOHOSTS
 316                                 ;;
 317
 318                         nokpersonalizer)
 319                                 NOKPERSONALIZER="Yes"
 320                                 export NOKPERSONALIZER
 321                                 ;;
 322
 323                         nolanguageselector)
 324                                 NOLANGUAGESELECTOR="Yes"
 325                                 export NOLANGUAGESELECTOR
 326                                 ;;
 327
 328                         nolocales)
 329                                 NOLOCALES="Yes"
 330                                 export NOLOCALES
 331                                 ;;
 332
 333                         nonetworking)
 334                                 NONETWORKING="Yes"
 335                                 export NONETWORKING
 336                                 ;;
 337
 338                         nopowermanagement)
 339                                 NOPOWERMANAGEMENT="Yes"
 340                                 export NOPOWERMANAGEMENT
 341                                 ;;
 342
 343                         noprogramcrashes)
 344                                 NOPROGRAMCRASHES="Yes"
 345                                 export NOPROGRAMCRASHES
 346                                 ;;
 347
 348                         nojockey)
 349                                 NOJOCKEY="Yes"
 350                                 export NOJOCKEY
 351                                 ;;
 352
 353                         nosudo)
 354                                 NOSUDO="Yes"
 355                                 export NOSUDO
 356                                 ;;
 357
 358                         swapon)
 359                                 SWAPON="Yes"
 360                                 export SWAPON
 361                                 ;;
 362
 363                         noupdatenotifier)
 364                                 NOUPDATENOTIFIER="Yes"
 365                                 export NOUPDATENOTIFIER
 366                                 ;;
 367
 368                         nouser)
 369                                 NOUSER="Yes"
 370                                 export NOUSER
 371                                 ;;
 372
 373                         noxautoconfig)
 374                                 NOXAUTOCONFIG="Yes"
 375                                 export NOXAUTOCONFIG
 376                                 ;;
 377
 378                         noxscreensaver)
 379                                 NOXSCREENSAVER="Yes"
 380                                 export NOXSCREENSAVER
 381                                 ;;
 382
 383                         persistent)
 384                                 PERSISTENT="Yes"
 385                                 export PERSISTENT
 386                                 ;;
 387
 388                         persistent=*)
 389                                 PERSISTENT="${ARGUMENT#persistent=}"
 390                                 if [ -z "${PERSISTENT}" ]
 391                                 then
 392                                         PERSISTENT="Yes"
 393                                 fi
 394                                 export PERSISTENT
 395                                 ;;
 396
 397                         persistent-path=*)
 398                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 399                                 export PERSISTENT_PATH
 400                                 ;;
 401
 402                         persistent-subtext=*)
 403                                 root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
 404                                 home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
 405                                 root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 406                                 home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 407                                 ;;
 408
 409                         nopersistent)
 410                                 NOPERSISTENT="Yes"
 411                                 export NOPERSISTENT
 412                                 ;;
 413
 414                         quickusbmodules)
 415                                 QUICKUSBMODULES="Yes"
 416                                 export QUICKUSBMODULES
 417                                 ;;
 418
 419                         preseed/file=*|file=*)
 420                                 LOCATION="${ARGUMENT#*=}"
 421                                 export LOCATION
 422                                 ;;
 423
 424                         nopreseed)
 425                                 NOPRESEED="Yes"
 426                                 export NOPRESEED
 427                                 ;;
 428
 429                         url=*)
 430                                 location="${ARGUMENT#url=}"
 431
 432                                 mount -o bind /sys /root/sys
 433                                 mount -o bind /proc /root/proc
 434                                 mount -o bind /dev /root/dev
 435
 436                                 mkdir -p /root/var/run/network
 437                                 [ "${NETBOOT}" ] || chroot /root dhclient eth0
 438                                 chroot /root wget -P /tmp "${location}"
 439                                 [ "${NETBOOT}" ] || chroot /root ifconfig eth0 down
 440
 441                                 umount /root/sys
 442                                 umount /root/proc
 443                                 umount /root/dev
 444
 445                                 LOCATION="/tmp/$(basename "${location}")"
 446                                 ;;
 447
 448                         */*=*)
 449                                 question="${ARGUMENT%%=*}"
 450                                 value="${ARGUMENT#*=}"
 451                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 452                                 export PRESEEDS
 453                                 ;;
 454
 455                         showmounts)
 456                                 SHOWMOUNTS="Yes"
 457                                 export SHOWMOUNTS
 458                                 ;;
 459
 460                         silent)
 461                                 SILENT="Yes"
 462                                 export SILENT
 463                                 ;;
 464
 465                         textonly)
 466                                 TEXTONLY="Yes"
 467                                 export TEXTONLY
 468                                 ;;
 469
 470                         timezone=*)
 471                                 TIMEZONE="${ARGUMENT#timezone=}"
 472                                 export TIMEZONE
 473                                 ;;
 474
 475                         notimezone)
 476                                 NOTIMEZONE="Yes"
 477                                 export NOTIMEZONE
 478                                 ;;
 479
 480                         todisk=*)
 481                                 TODISK="${ARGUMENT#todisk=}"
 482                                 export TODISK
 483                                 ;;
 484
 485                         toram)
 486                                 TORAM="Yes"
 487                                 export TORAM
 488                                 ;;
 489
 490                         toram=*)
 491                                 TORAM="Yes"
 492                                 MODULETORAM="${ARGUMENT#toram=}"
 493                                 export TORAM MODULETORAM
 494                                 ;;
 495
 496                         exposedroot)
 497                                 EXPOSED_ROOT="Yes"
 498                                 export EXPOSED_ROOT
 499                                 ;;
 500
 501                         plainroot)
 502                                 PLAIN_ROOT="Yes"
 503                                 export PLAIN_ROOT
 504                                 ;;
 505
 506                         skipunion)
 507                                 SKIP_UNION_MOUNTS="Yes"
 508                                 export SKIP_UNION_MOUNTS
 509                                 ;;
 510
 511                         root=*)
 512                                 ROOT="${ARGUMENT#root=}"
 513                                 export ROOT
 514                                 ;;
 515
 516                         union=*)
 517                                 UNIONTYPE="${ARGUMENT#union=}"
 518                                 export UNIONTYPE
 519                                 ;;
 520
 521                         utc=*)
 522                                 UTC="${ARGUMENT#utc=}"
 523                                 export UTC
 524                                 ;;
 525
 526                         xdebconf)
 527                                 XDEBCONF="Yes"
 528                                 export XDEBCONF
 529                                 ;;
 530
 531                         xdriver=*)
 532                                 XDRIVER="${ARGUMENT#xdriver=}"
 533                                 export XDRIVER
 534                                 ;;
 535
 536                         xvideomode=*)
 537                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 538                                 export XVIDEOMODE
 539                                 ;;
 540                 esac
 541         done
 542
 543         # sort of compatibility with netboot.h from linux docs
 544         if [ -z "${NETBOOT}" ]
 545         then
 546                 if [ "${ROOT}" = "/dev/nfs" ]
 547                 then
 548                         NETBOOT="nfs"
 549                         export NETBOOT
 550                 elif [ "${ROOT}" = "/dev/cifs" ]
 551                 then
 552                         NETBOOT="cifs"
 553                         export NETBOOT
 554                 fi
 555         fi
 556
 557         if [ -z "${MODULE}" ]
 558         then
 559                 MODULE="filesystem"
 560                 export MODULE
 561         fi
 562
 563         if [ -z "${UNIONTYPE}" ]
 564         then
 565                 UNIONTYPE="aufs"
 566                 export UNIONTYPE
 567         fi
 568 }
 569
 570 is_live_path ()
 571 {
 572         DIRECTORY="${1}"
 573
 574         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 575         then
 576                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 577                 do
 578                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 579                         then
 580                                 return 0
 581                         fi
 582                 done
 583         fi
 584
 585         return 1
 586 }
 587
 588 matches_uuid ()
 589 {
 590         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 591         then
 592                 return 0
 593         fi
 594
 595         path="${1}"
 596         uuid="$(cat /conf/uuid.conf)"
 597
 598         for try_uuid_file in "${path}/.disk/live-uuid"*
 599         do
 600                 [ -e "${try_uuid_file}" ] || continue
 601
 602                 try_uuid="$(cat "${try_uuid_file}")"
 603
 604                 if [ "${uuid}" = "${try_uuid}" ]
 605                 then
 606                         return 0
 607                 fi
 608         done
 609
 610         return 1
 611 }
 612
 613 get_backing_device ()
 614 {
 615         case "${1}" in
 616                 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 617                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 618                         ;;
 619
 620                 *.dir)
 621                         echo "directory"
 622                         ;;
 623
 624                 *)
 625                         panic "Unrecognized live filesystem: ${1}"
 626                         ;;
 627         esac
 628 }
 629
 630 match_files_in_dir ()
 631 {
 632         # Does any files match pattern ${1} ?
 633         local pattern="${1}"
 634
 635         if [ "$(echo ${pattern})" != "${pattern}" ]
 636         then
 637                 return 0
 638         fi
 639
 640         return 1
 641 }
 642
 643 mount_images_in_directory ()
 644 {
 645         directory="${1}"
 646         rootmnt="${2}"
 647         mac="${3}"
 648
 649
 650         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 651                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 652                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 653                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 654                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 655                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 656         then
 657                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 658                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 659         else
 660                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 661         fi
 662 }
 663
 664 is_nice_device ()
 665 {
 666         sysfs_path="${1#/sys}"
 667
 668         if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-|platform-orion-ehci|platform-mmc|platform-mxsdhci|)"
 669         then
 670                 return 0
 671         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 672         then
 673                 return 0
 674         fi
 675
 676         return 1
 677 }
 678
 679 copy_live_to ()
 680 {
 681         copyfrom="${1}"
 682         copytodev="${2}"
 683         copyto="${copyfrom}_swap"
 684
 685         if [ -z "${MODULETORAM}" ]
 686         then
 687                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 688         else
 689                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 690
 691                 if [ -f "${MODULETORAMFILE}" ]
 692                 then
 693                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 694                 else
 695                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 696                         return 1
 697                 fi
 698         fi
 699
 700         if [ "${copytodev}" = "ram" ]
 701         then
 702                 # copying to ram:
 703                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo ) )
 704                 mount_options="-o size=${size}k"
 705                 free_string="memory"
 706                 fstype="tmpfs"
 707                 dev="/dev/shm"
 708         else
 709                 # it should be a writable block device
 710                 if [ -b "${copytodev}" ]
 711                 then
 712                         dev="${copytodev}"
 713                         free_string="space"
 714                         fstype=$(get_fstype "${dev}")
 715                         freespace=$(fs_size "${dev}")
 716                 else
 717                         log_warning_msg "${copytodev} is not a block device."
 718                         return 1
 719                 fi
 720         fi
 721
 722         if [ "${freespace}" -lt "${size}" ]
 723         then
 724                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 725                 return 1
 726         fi
 727
 728         # begin copying (or uncompressing)
 729         mkdir "${copyto}"
 730         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 731         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 732
 733         if [ "${extension}" = "tgz" ]
 734         then
 735                 cd "${copyto}"
 736                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 737                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 738                 mount -r -o move "${copyto}" "${rootmnt}"
 739                 cd "${OLDPWD}"
 740         else
 741                 if [ -n "${MODULETORAMFILE}" ]
 742                 then
 743                         if [ -x /bin/rsync ]
 744                         then
 745                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 746                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 747                         else
 748                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 749                         fi
 750                 else
 751                         if [ -x /bin/rsync ]
 752                         then
 753                                 echo " * Copying whole medium to RAM" 1>/dev/console
 754                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 755                         else
 756                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 757                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}   # "cp -a" from busybox also copies hidden files
 758                         fi
 759                 fi
 760
 761                 umount ${copyfrom}
 762                 mount -r -o move ${copyto} ${copyfrom}
 763         fi
 764
 765         rmdir ${copyto}
 766         return 0
 767 }
 768
 769 do_netmount ()
 770 {
 771         rc=1
 772
 773         modprobe -q af_packet # For DHCP
 774
 775         udevadm trigger
 776         udevadm settle
 777
 778         # if ethdevice was not specified on the kernel command line
 779         # make sure we try to get a working network configuration
 780         # for *every* present network device (except for loopback of course)
 781         if [ -z "$ETHDEVICE" ] ; then
 782                 echo "If you want to boot from a specific device use bootoption ethdevice=..."
 783                 for device in /sys/class/net/*; do
 784                         dev=${device##*/} ;
 785                         if [ "$dev" != "lo" ] ; then
 786                                 ETHDEVICE="$ETHDEVICE $dev"
 787                         fi
 788                 done
 789         fi
 790
 791         # split args of ethdevice=eth0,eth1 into "eth0 eth1"
 792         for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
 793                 devlist="$devlist $device"
 794         done
 795
 796         [ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
 797         echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
 798
 799         # this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
 800         # an endless loop; iff execution fails give it two further tries, that's
 801         # why we use '$devlist $devlist $devlist' for the other for loop
 802         for dev in $devlist $devlist $devlist ; do
 803                 echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
 804                 ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
 805                 jobid=$!
 806                 sleep "$ETHDEV_TIMEOUT" ; sleep 1
 807                 if [ -r /proc/"$jobid"/status ] ; then
 808                         echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
 809                         kill -9 $jobid
 810                 fi
 811
 812                 # if configuration of device worked we should have an assigned
 813                 # IP address, iff so let's use the according as $DEVICE for later usage
 814                 # simple and primitive approach which seems to work fine
 815                 if ifconfig $dev | grep -q 'inet.*addr:' ; then
 816                         export DEVICE="$dev"
 817                         break
 818                 fi
 819         done
 820
 821         # source relevant ipconfig output
 822         OLDHOSTNAME=${HOSTNAME}
 823         . /tmp/net-${DEVICE}.conf
 824         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 825         export HOSTNAME
 826
 827         # Check if we have a network device at all
 828         if ! ls /sys/class/net/"$DEVICE" > /dev/null 2>&1 && \
 829            ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 830            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 831            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 832            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 833         then
 834                 panic "No supported network device found, maybe a non-mainline driver is required."
 835         fi
 836
 837         if [ "${NFSROOT}" = "auto" ]
 838         then
 839                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 840         fi
 841
 842         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] ) && do_httpmount
 843         then
 844                 rc=0
 845                 return ${rc}
 846         fi
 847
 848         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 849         then
 850                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 851         fi
 852
 853         log_begin_msg "Trying netboot from ${NFSROOT}"
 854
 855         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 856         then
 857                 rc=0
 858         elif do_nfsmount
 859         then
 860                 NETBOOT="nfs"
 861                 export NETBOOT
 862                 rc=0
 863         fi
 864
 865         log_end_msg
 866         return ${rc}
 867 }
 868
 869 do_httpmount ()
 870 {
 871         rc=1
 872         dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 873         mount -t ramfs ram "${mountpoint}"
 874         mkdir -p "${dest}"
 875
 876         for webfile in HTTPFS FTPFS FETCH
 877         do
 878                 url="$(eval echo \"\$\{${webfile}\}\")"
 879                 extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 880
 881                 if [ -n "$url" ]
 882                 then
 883                         case "${extension}" in
 884                                 squashfs|tgz|tar)
 885                                         if [ "${webfile}" = "FETCH" ]
 886                                         then
 887                                                 case "$url" in
 888                                                         tftp*)
 889                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 890                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 891                                                                 lfile="$(basename $url)"
 892                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 893                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 894                                                         ;;
 895
 896                                                         *)
 897                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 898                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 899                                                                 ;;
 900                                                 esac
 901                                         else
 902                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 903                                                 if [ "${webfile}" = "FTPFS" ]
 904                                                 then
 905                                                         FUSE_MOUNT="curlftpfs"
 906                                                         url="$(dirname ${url})"
 907                                                 else
 908                                                         FUSE_MOUNT="httpfs"
 909                                                 fi
 910                                                 modprobe fuse
 911                                                 $FUSE_MOUNT "${url}" "${dest}"
 912                                         fi
 913                                         [ ${?} -eq 0 ] && rc=0
 914                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 915                                         break
 916                                         ;;
 917
 918                                 *)
 919                                         log_begin_msg "Unrecognized archive extension for ${url}"
 920                                         ;;
 921                         esac
 922                 fi
 923         done
 924
 925         if [ ${rc} != 0 ]
 926         then
 927             umount "${mountpoint}"
 928         fi
 929
 930         return ${rc}
 931 }
 932
 933 do_nfsmount ()
 934 {
 935         rc=1
 936
 937         modprobe -q nfs
 938
 939         if [ -z "${NFSOPTS}" ]
 940         then
 941                 NFSOPTS=""
 942         fi
 943
 944         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 945
 946         # FIXME: This while loop is an ugly HACK round an nfs bug
 947         i=0
 948         while [ "$i" -lt 60 ]
 949         do
 950                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 951                 sleep 1
 952                 i="$(($i + 1))"
 953         done
 954
 955         return ${rc}
 956 }
 957
 958 do_cifsmount ()
 959 {
 960         rc=1
 961
 962         if [ -x "/sbin/mount.cifs" ]
 963         then
 964                 if [ -z "${NFSOPTS}" ]
 965                 then
 966                         CIFSOPTS="-ouser=root,password="
 967                 else
 968                         CIFSOPTS="${NFSOPTS}"
 969                 fi
 970
 971                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 972                 modprobe -q cifs
 973
 974                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 975                 then
 976                         rc=0
 977                 fi
 978         fi
 979
 980         return ${rc}
 981 }
 982
 983 do_snap_copy ()
 984 {
 985         fromdev="${1}"
 986         todir="${2}"
 987         snap_type="${3}"
 988         size=$(fs_size "${fromdev}" "" "used")
 989
 990         if [ -b "${fromdev}" ]
 991         then
 992                 # look for free mem
 993                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 994                 then
 995                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 996                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 997                 else
 998                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo))
 999                 fi
1000
1001                 tomount="/mnt/tmpsnap"
1002
1003                 if [ ! -d "${tomount}" ]
1004                 then
1005                         mkdir -p "${tomount}"
1006                 fi
1007
1008                 fstype=$(get_fstype "${fromdev}")
1009
1010                 if [ -n "${fstype}" ]
1011                 then
1012                         # Copying stuff...
1013                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
1014                         cp -a "${tomount}"/* ${todir}
1015                         umount "${tomount}"
1016                 else
1017                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
1018                 fi
1019
1020                 rmdir "${tomount}"
1021
1022                 if echo ${fromdev} | grep -qs loop
1023                 then
1024                         losetup -d "${fromdev}"
1025                 fi
1026
1027                 return 0
1028         else
1029                 return 1
1030
1031                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
1032         fi
1033 }
1034
1035 find_snap ()
1036 {
1037         # Look for ${snap_label}.* in block devices
1038         snap_label="${1}"
1039
1040         if [ "${PERSISTENT}" != "nofiles" ]
1041         then
1042                 # search for image files
1043                 snapdata=$(find_files "${PERSISTENT_PATH}${snap_label}.squashfs ${PERSISTENT_PATH}${snap_label}.cpio.gz ${PERSISTENT_PATH}${snap_label}.ext2 ${PERSISTENT_PATH}${snap_label}.ext3 ${PERSISTENT_PATH}${snap_label}.ext4 ${PERSISTENT_PATH}${snap_label}.jffs2")
1044         fi
1045
1046         if [ -z "${snapdata}" ]
1047         then
1048                 snapdata=$(find_cow_device "${snap_label}")
1049         fi
1050         echo "${snapdata}"
1051 }
1052
1053 try_snap ()
1054 {
1055         # copy the contents of previously found snapshot to ${snap_mount}
1056         # and remember the device and filename for resync on exit in live-initramfs.init
1057
1058         snapdata="${1}"
1059         snap_mount="${2}"
1060         snap_type="${3}"
1061
1062         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
1063         then
1064                 log_success_msg "found snapshot: ${snapdata}"
1065                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
1066                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
1067                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
1068
1069                 RES=""
1070                 if ! try_mount "${snapdev}" "${snapback}" "ro"
1071                 then
1072                         break
1073                 fi
1074
1075                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
1076                 then
1077                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
1078                         dev=$(get_backing_device "${snapback}/${snapfile}")
1079
1080                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1081                         RES=$?
1082                 else
1083                         # cpio.gz snapshot
1084
1085                         # Unfortunately klibc's cpio is incompatible with the
1086                         # rest of the world; everything else requires -u -d,
1087                         # while klibc doesn't implement them. Try to detect
1088                         # whether it's in use.
1089                         cpiopath="$(which cpio)" || true
1090                         if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
1091                         then
1092                                 cpioargs=
1093                         else
1094                                 cpioargs='--unconditional --make-directories'
1095                         fi
1096
1097                         if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null)
1098                         then
1099                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | cpio $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
1100                         fi
1101                 fi
1102
1103                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1104
1105                 if [ "${RES}" != "0" ]
1106                 then
1107                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1108                 fi
1109
1110         elif [ -b "${snapdata}" ]
1111         then
1112                 # Try to find if it could be a snapshot partition
1113                 dev="${snapdata}"
1114                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1115                 if echo "${dev}" | grep -qs loop
1116                 then
1117                         # strange things happens, user confused?
1118                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1119                         snapfile=$(basename ${snaploop})
1120                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1121                 else
1122                         snapdev="${dev}"
1123                 fi
1124
1125                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1126                 then
1127                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1128                         return 1
1129                 else
1130                         if [ -n "${snapfile}" ]
1131                         then
1132                                 # it was a loop device, user confused
1133                                 umount ${snapdev}
1134                         fi
1135                 fi
1136         else
1137                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1138                 return 1
1139         fi
1140
1141         echo "export ${snap_type}SNAP="/cow${snap_mount#$rootmnt}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1142         return 0
1143 }
1144
1145 setup_unionfs ()
1146 {
1147         image_directory="${1}"
1148         rootmnt="${2}"
1149         addimage_directory="${3}"
1150
1151         case ${UNIONTYPE} in
1152                 aufs|unionfs)
1153                         modprobe -q -b ${UNIONTYPE}
1154
1155                         if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
1156                         then
1157                                 echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
1158                                 echo "This might be really slow."
1159
1160                                 UNIONTYPE="unionfs-fuse"
1161                         fi
1162                         ;;
1163         esac
1164
1165         if [ "${UNIONTYPE}" = unionfs-fuse ]
1166         then
1167                 modprobe fuse
1168         fi
1169
1170         # run-init can't deal with images in a subdir, but we're going to
1171         # move all of these away before it runs anyway.  No, we're not,
1172         # put them in / since move-mounting them into / breaks mono and
1173         # some other apps.
1174
1175         croot="/"
1176
1177         # Let's just mount the read-only file systems first
1178         rofsstring=""
1179         rofslist=""
1180
1181         if [ "${UNIONTYPE}" = "aufs" ]
1182         then
1183                 roopt="rr"
1184                 noxino_opt="noxino,"
1185         elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
1186         then
1187                 roopt="RO"
1188         else
1189                 roopt="ro"
1190         fi
1191
1192         if [ -z "${PLAIN_ROOT}" ]
1193         then
1194                 # Read image names from ${MODULE}.module if it exists
1195                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1196                 then
1197                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1198                         do
1199                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1200                         done
1201                 elif [ -e "${image_directory}/${MODULE}.module" ]
1202                 then
1203                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1204                         do
1205                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1206                         done
1207                 else
1208                         # ${MODULE}.module does not exist, create a list of images
1209                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1210                         do
1211                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1212                                 do
1213                                         if [ -e "${IMAGE}" ]
1214                                         then
1215                                                 image_string="${image_string} ${IMAGE}"
1216                                         fi
1217                                 done
1218                         done
1219
1220                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1221                         then
1222                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1223                                 do
1224                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1225                                         do
1226                                                 if [ -e "${IMAGE}" ]
1227                                                 then
1228                                                         image_string="${image_string} ${IMAGE}"
1229                                                 fi
1230                                         done
1231                                 done
1232                         fi
1233
1234                         # Now sort the list
1235                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1236                 fi
1237
1238         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1239
1240                 mkdir -p "${croot}"
1241
1242                 for image in ${image_string}
1243                 do
1244                         imagename=$(basename "${image}")
1245
1246                         export image devname
1247                         maybe_break live-realpremount
1248                         log_begin_msg "Running /scripts/live-realpremount"
1249                         run_scripts /scripts/live-realpremount
1250                         log_end_msg
1251
1252                         if [ -d "${image}" ]
1253                         then
1254                                 # it is a plain directory: do nothing
1255                                 rofsstring="${image}=${roopt}:${rofsstring}"
1256                                 rofslist="${image} ${rofslist}"
1257                         elif [ -f "${image}" ]
1258                         then
1259                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1260                                 then
1261                                         backdev=$(get_backing_device "${image}" "-r")
1262                                 else
1263                                         backdev=$(get_backing_device "${image}")
1264                                 fi
1265                                 fstype=$(get_fstype "${backdev}")
1266
1267                                 if [ "${fstype}" = "unknown" ]
1268                                 then
1269                                         panic "Unknown file system type on ${backdev} (${image})"
1270                                 fi
1271
1272                                 if [ -z "${fstype}" ]
1273                                 then
1274                                         fstype="${imagename##*.}"
1275                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1276                                 fi
1277
1278                                 mkdir -p "${croot}/${imagename}"
1279                                 log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1280                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1281                                 log_end_msg
1282                         fi
1283                 done
1284         else
1285                 # we have a plain root system
1286                 mkdir -p "${croot}/filesystem"
1287                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1288                 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}"
1289                 # probably broken:
1290                 mount -o bind ${croot}/filesystem $mountpoint
1291                 log_end_msg
1292         fi
1293
1294         rofsstring=${rofsstring%:}
1295
1296         mkdir -p /cow
1297
1298         # Looking for "${root_persistence}" device or file
1299         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1300         then
1301                 if [ -z "${QUICKUSBMODULES}" ]
1302                 then
1303                         # Load USB modules
1304                         num_block=$(ls -l /sys/block | wc -l)
1305                         for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1306                         do
1307                                 modprobe -q -b ${module}
1308                         done
1309
1310                         udevadm trigger
1311                         udevadm settle
1312
1313                         # For some reason, udevsettle does not block in this scenario,
1314                         # so we sleep for a little while.
1315                         #
1316                         # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1317                         for timeout in 5 4 3 2 1
1318                         do
1319                                 sleep 1
1320
1321                                 if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1322                                 then
1323                                         break
1324                                 fi
1325                         done
1326                 fi
1327
1328                 # search for label and files (this could be hugely optimized)
1329                 cowprobe=$(find_cow_device "${root_persistence}")
1330                 if [ -b "${cowprobe}" ]
1331                 then
1332                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1333                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1334                         # snapshots to be sure to really store some e.g key config files,
1335                         # but not on the same media
1336                         blacklistdev="${cowprobe}"
1337                         PERSISTENCE_IS_ON="1"
1338                         export PERSISTENCE_IS_ON
1339                 fi
1340                 # homecow just mount something on /home, this should be generalized some way
1341                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1342                 if [ -b "${homecow}" ]
1343                 then
1344                         PERSISTENCE_IS_ON="1"
1345                         export PERSISTENCE_IS_ON
1346                 fi
1347                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1348                 # This second type should be removed when snapshot will get smarter,
1349                 # hence when "/etc/live-snapshot*list" will be supported also by
1350                 # ext2|ext3|ext4|jffs2 snapshot types.
1351                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1352
1353                 if [ -b "${cowprobe}" ]
1354                 then
1355                         cowdevice=${cowprobe}
1356                         cow_fstype=$(get_fstype "${cowprobe}")
1357                         cow_mountopt="rw,noatime"
1358
1359                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1360                         then
1361                                 fsck -y ${cowdevice}
1362                         fi
1363                 else
1364                         log_warning_msg "Unable to find the persistent medium"
1365                         cowdevice="tmpfs"
1366                         cow_fstype="tmpfs"
1367                         cow_mountopt="rw,noatime,mode=755"
1368                 fi
1369         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1370         then
1371                 # check if there are any nfs options
1372                 if echo ${NFS_COW}|grep -q ','
1373                 then
1374                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1375                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1376                 else
1377                         nfs_cow_opts="-o nolock"
1378                         nfs_cow=${NFS_COW}
1379                 fi
1380                 mac="$(get_mac)"
1381                 if [ -n "${mac}" ]
1382                 then
1383                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1384                         cow_fstype="nfs"
1385                 else
1386                         panic "unable to determine mac address"
1387                 fi
1388         else
1389                 cowdevice="tmpfs"
1390                 cow_fstype="tmpfs"
1391                 cow_mountopt="rw,noatime,mode=755"
1392         fi
1393
1394         if [ "${cow_fstype}" = "nfs" ]
1395         then
1396                 log_begin_msg \
1397                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1398                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1399                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1400         else
1401                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1402                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1403         fi
1404
1405         rofscount=$(echo ${rofslist} |wc -w)
1406
1407         if [ -n "${EXPOSED_ROOT}" ]
1408         then
1409                 if [ ${rofscount} -ne 1 ]
1410                 then
1411                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1412                 fi
1413                 exposedrootfs=${rofslist%% }
1414
1415                 mount --bind ${exposedrootfs} ${rootmnt} || \
1416                         panic "bind mount of ${exposedrootfs} failed"
1417
1418                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1419                 then
1420                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1421                 else
1422                         cow_dirs=''
1423                 fi
1424
1425                 for dir in ${cow_dirs}; do
1426                         mkdir -p /cow${dir}
1427
1428                         case "${UNIONTYPE}" in
1429                                 unionfs-fuse)
1430                                         (ulimit -n 16384; unionfs-fuse -o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid /cow=RW:${exposedrootfs}${dir} "${rootmnt}${dir}" || panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option cow,noinitgroups,default_permissions,allow_other,use_ino,suid=/cow=RW:${exposedrootfs}${dir}")
1431                                         mkdir -p /dev/.initramfs/varrun
1432                                         pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1433                                         ;;
1434
1435                                 *)
1436                                         mount -t ${UNIONTYPE} -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro ${UNIONTYPE} "${rootmnt}${dir}" || panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1437                                         ;;
1438                         esac
1439                 done
1440         else
1441                 case "${UNIONTYPE}" in
1442                         unionfs-fuse)
1443                                 (ulimit -n 16384; unionfs-fuse -o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid /cow=RW:${rofsstring} "${rootmnt}" || panic "mount ${UNIONTYPE} on ${rootmnt} failed with option cow,noinitgroups,default_permissions,allow_other,use_ino,suid=/cow:RW:${rofsstring}")
1444                                 mkdir -p /dev/.initramfs/varrun
1445                                 pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1446                                 ;;
1447
1448                         *)
1449                                 mount -t ${UNIONTYPE} -o noatime,${noxino_opt}dirs=/cow=rw:${rofsstring} ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on ${rootmnt} failed with option noatime,${noxino_opt}dirs=/cow=rw:${rofsstring}"
1450                                 ;;
1451                 esac
1452         fi
1453
1454         # Correct the permissions of /:
1455         chmod 0755 "${rootmnt}"
1456
1457         # tmpfs file systems
1458         touch /etc/fstab
1459         mkdir -p "${rootmnt}/live"
1460         mount -t tmpfs tmpfs ${rootmnt}/live
1461
1462         # Adding other custom mounts
1463         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1464         then
1465                 # directly mount /home
1466                 # FIXME: add a custom mounts configurable system
1467
1468                 if [ -b "${homecow}" ]
1469                 then
1470                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1471                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1472                 else
1473                         log_warning_msg "Unable to find the persistent home medium"
1474                 fi
1475
1476                 # Look for other snapshots to copy in
1477                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1478                 # This second type should be removed when snapshot grow smarter
1479                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1480         fi
1481
1482         if [ -n "${SHOWMOUNTS}" ]
1483         then
1484                 for d in ${rofslist}
1485                 do
1486                         mkdir -p "${rootmnt}/live/${d##*/}"
1487
1488                         case d in
1489                                 *.dir)
1490                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1491                                         ;;
1492
1493                                 *)
1494                                         case "${UNIONTYPE}" in
1495                                                 unionfs-fuse)
1496                                                         mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1497                                                         ;;
1498
1499                                                 *)
1500                                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1501                                                         ;;
1502                                         esac
1503                                         ;;
1504                         esac
1505                 done
1506         fi
1507
1508         # shows cow fs on /cow for use by live-snapshot
1509         mkdir -p "${rootmnt}/live/cow"
1510         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 ${rootmnt}/live/cow"
1511 }
1512
1513 check_dev ()
1514 {
1515         sysdev="${1}"
1516         devname="${2}"
1517         skip_uuid_check="${3}"
1518
1519         # support for fromiso=.../isofrom=....
1520         if [ -n "$FROMISO" ]
1521         then
1522                 ISO_DEVICE=$(dirname $FROMISO)
1523                 if ! [ -b $ISO_DEVICE ]
1524                 then
1525                         # to support unusual device names like /dev/cciss/c0d0p1
1526                         # as well we have to identify the block device name, let's
1527                         # do that for up to 15 levels
1528                         i=15
1529                         while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
1530                         do
1531                                 ISO_DEVICE=$(dirname ${ISO_DEVICE})
1532                                 [ -b "$ISO_DEVICE" ] && break
1533                                 i=$(($i -1))
1534                         done
1535                 fi
1536
1537                 if [ "$ISO_DEVICE" = "/" ]
1538                 then
1539                         echo "Warning: device for bootoption isofrom= ($FROMISO) not found.">>/live.log
1540                 else
1541                         mkdir /isofrom
1542                         mount "$ISO_DEVICE" /isofrom
1543                         ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
1544                         loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1545                         devname="${loopdevname}"
1546                 fi
1547         fi
1548
1549         if [ -z "${devname}" ]
1550         then
1551                 devname=$(sys2dev "${sysdev}")
1552         fi
1553
1554         if [ -d "${devname}" ]
1555         then
1556                 mount -o bind "${devname}" $mountpoint || continue
1557
1558                 if is_live_path $mountpoint
1559                 then
1560                         echo $mountpoint
1561                         return 0
1562                 else
1563                         umount $mountpoint
1564                 fi
1565         fi
1566
1567         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1568         then
1569                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1570                 devname="${loopdevname}"
1571         fi
1572
1573         fstype=$(get_fstype "${devname}")
1574
1575         if is_supported_fs ${fstype}
1576         then
1577                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1578
1579                 if is_live_path ${mountpoint} && \
1580                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1581                 then
1582                         echo ${mountpoint}
1583                         return 0
1584                 else
1585                         umount ${mountpoint}
1586                 fi
1587         fi
1588
1589         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1590         then
1591                 losetup -d "${loopdevname}"
1592         fi
1593
1594         return 1
1595 }
1596
1597 find_livefs ()
1598 {
1599         timeout="${1}"
1600
1601         # don't start autodetection before timeout has expired
1602         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1603         then
1604                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1605                 then
1606                         return 1
1607                 fi
1608         fi
1609
1610         # first look at the one specified in the command line
1611         case "${LIVE_MEDIA}" in
1612                 removable-usb)
1613                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1614                         do
1615                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1616                                 then
1617                                         if readlink ${sysblock} | grep -q usb ||
1618                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1619                                         then
1620                                                 for dev in $(subdevices "${sysblock}")
1621                                                 do
1622                                                         if check_dev "${dev}"
1623                                                         then
1624                                                                 return 0
1625                                                         fi
1626                                                 done
1627                                         fi
1628                                 fi
1629                         done
1630                         return 1
1631                         ;;
1632
1633                 removable)
1634                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1635                         do
1636                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1637                                 then
1638                                         for dev in $(subdevices "${sysblock}")
1639                                         do
1640                                                 if check_dev "${dev}"
1641                                                 then
1642                                                         return 0
1643                                                 fi
1644                                         done
1645                                 fi
1646                         done
1647                         return 1
1648                         ;;
1649
1650                 *)
1651                         if [ ! -z "${LIVE_MEDIA}" ]
1652                         then
1653                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1654                                 then
1655                                         return 0
1656                                 fi
1657                         fi
1658                         ;;
1659         esac
1660
1661         # or do the scan of block devices
1662         # prefer removable devices over non-removable devices, so scan them first
1663         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1664         do
1665                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1666                 then
1667                         removable_devices_to_scan="$removable_devices_to_scan $sysblock"
1668                 else
1669                         nonremovable_devices_to_scan="$nonremovable_devices_to_scan $sysblock"
1670                 fi
1671         done
1672         devices_to_scan="$removable_devices_to_scan $nonremovable_devices_to_scan"
1673
1674         for sysblock in $devices_to_scan
1675         do
1676                 devname=$(sys2dev "${sysblock}")
1677                 fstype=$(get_fstype "${devname}")
1678
1679                 if /lib/udev/cdrom_id ${devname} > /dev/null
1680                 then
1681                         if check_dev "null" "${devname}"
1682                         then
1683                                 return 0
1684                         fi
1685                 elif is_nice_device "${sysblock}"
1686                 then
1687                         for dev in $(subdevices "${sysblock}")
1688                         do
1689                                 if check_dev "${dev}"
1690                                 then
1691                                         return 0
1692                                 fi
1693                         done
1694                 elif [ "${fstype}" = "squashfs" -o \
1695                         "${fstype}" = "ext2" -o \
1696                         "${fstype}" = "ext3" -o \
1697                         "${fstype}" = "ext4" -o \
1698                         "${fstype}" = "jffs2" ]
1699                 then
1700                         # This is an ugly hack situation, the block device has
1701                         # an image directly on it.  It's hopefully
1702                         # live-initramfs, so take it and run with it.
1703                         ln -s "${devname}" "${devname}.${fstype}"
1704                         echo "${devname}.${fstype}"
1705                         return 0
1706                 fi
1707         done
1708
1709         return 1
1710 }
1711
1712 set_usplash_timeout ()
1713 {
1714         if [ -x /sbin/usplash_write ]
1715         then
1716                 /sbin/usplash_write "TIMEOUT 120"
1717         else if [ -x /sbin/splashy_update ] ; then
1718                 /sbin/splashy_update "TIMEOUT 120"
1719         fi ; fi
1720 }
1721
1722 integrity_check ()
1723 {
1724         media_mountpoint="${1}"
1725
1726         log_begin_msg "Checking media integrity"
1727
1728         cd ${media_mountpoint}
1729         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1730         RC="${?}"
1731
1732         log_end_msg
1733
1734         if [ "${RC}" -eq 0 ]
1735         then
1736                 log_success_msg "Everything ok, will reboot in 10 seconds."
1737                 sleep 10
1738                 cd /
1739                 umount ${media_mountpoint}
1740                 sync
1741                 echo u > /proc/sysrq-trigger
1742                 echo b > /proc/sysrq-trigger
1743         else
1744                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1745         fi
1746 }
1747
1748 mountroot ()
1749 {
1750         if [ -x /scripts/local-top/cryptroot ]; then
1751             /scripts/local-top/cryptroot
1752         fi
1753
1754         exec 6>&1
1755         exec 7>&2
1756         exec > live.log
1757         exec 2>&1
1758         tail -f live.log >&7 &
1759         tailpid="${!}"
1760
1761         # Ensure 'panic' function is overridden
1762         . /scripts/live-functions
1763
1764         Arguments
1765
1766         set_usplash_timeout
1767
1768         maybe_break live-premount
1769         log_begin_msg "Running /scripts/live-premount"
1770         run_scripts /scripts/live-premount
1771         log_end_msg
1772
1773         # Needed here too because some things (*cough* udev *cough*)
1774         # changes the timeout
1775
1776         set_usplash_timeout
1777
1778         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1779         then
1780                 if do_netmount
1781                 then
1782                         livefs_root="${mountpoint}"
1783                 else
1784                         panic "Unable to find a live file system on the network"
1785                 fi
1786         else
1787                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1788                 then
1789                         # Do a local boot from hd
1790                         livefs_root=${ROOT}
1791                 else
1792                         # Scan local devices for the image
1793                         i=0
1794                         while [ "$i" -lt 60 ]
1795                         do
1796                                 livefs_root=$(find_livefs ${i})
1797
1798                                 if [ -n "${livefs_root}" ]
1799                                 then
1800                                         break
1801                                 fi
1802
1803                                 sleep 1
1804                                 i="$(($i + 1))"
1805                         done
1806                 fi
1807         fi
1808
1809         if [ -z "${livefs_root}" ]
1810         then
1811                 panic "Unable to find a medium containing a live file system"
1812         fi
1813
1814         if [ "${INTEGRITY_CHECK}" ]
1815         then
1816                 integrity_check "${livefs_root}"
1817         fi
1818
1819         if [ "${TORAM}" ]
1820         then
1821                 live_dest="ram"
1822         elif [ "${TODISK}" ]
1823         then
1824                 live_dest="${TODISK}"
1825         fi
1826
1827         if [ "${live_dest}" ]
1828         then
1829                 log_begin_msg "Copying live media to ${live_dest}"
1830                 copy_live_to "${livefs_root}" "${live_dest}"
1831                 log_end_msg
1832         fi
1833
1834         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1835         # because the mountpoint is left behind in /proc/mounts, so let's get
1836         # rid of it when running from RAM
1837         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1838         then
1839           losetup -d /dev/loop0
1840           grep -q /isofrom /proc/mounts && umount /isofrom
1841         fi
1842
1843         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1844         then
1845                 setup_unionfs "${livefs_root}" "${rootmnt}"
1846         else
1847                 mac="$(get_mac)"
1848                 mac="$(echo ${mac} | sed 's/-//g')"
1849                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1850         fi
1851
1852         log_end_msg
1853
1854         # unionfs-fuse needs /dev to be bind-mounted for the duration of
1855         # live-bottom; udev's init script will take care of things after that
1856         if [ "${UNIONTYPE}" = unionfs-fuse ]
1857         then
1858                 mount -n -o bind /dev "${rootmnt}/dev"
1859         fi
1860
1861         maybe_break live-bottom
1862         log_begin_msg "Running /scripts/live-bottom\n"
1863
1864         run_scripts /scripts/live-bottom
1865         log_end_msg
1866
1867         if [ "${UNIONFS}" = unionfs-fuse ]
1868         then
1869                 umount "${rootmnt}/dev"
1870         fi
1871
1872         exec 1>&6 6>&-
1873         exec 2>&7 7>&-
1874         kill ${tailpid}
1875         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1876         if [ -f /etc/live.conf ]
1877         then
1878                 cp /etc/live.conf "${rootmnt}/etc/"
1879         fi
1880 }