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         echo "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                         cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 690                 else
 691                         mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 692                         cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}   # "cp -a" from busybox also copies hidden files
 693                 fi
 694
 695                 umount ${copyfrom}
 696                 mount -r -o move ${copyto} ${copyfrom}
 697         fi
 698
 699         rmdir ${copyto}
 700         return 0
 701 }
 702
 703 do_netmount ()
 704 {
 705         rc=1
 706
 707         modprobe -q af_packet # For DHCP
 708
 709         if [ -x /sbin/udevadm ]
 710         then
 711                 # lenny
 712                 udevadm trigger
 713                 udevadm settle
 714         else
 715                 # etch
 716                 udevtrigger
 717                 udevsettle
 718         fi
 719
 720         ipconfig ${DEVICE} | tee /netboot.config
 721
 722         # source relevant ipconfig output
 723         OLDHOSTNAME=${HOSTNAME}
 724         . /tmp/net-${DEVICE}.conf
 725         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 726         export HOSTNAME
 727
 728         # Check if we have a network device at all
 729         if ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 730            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 731            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 732            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 733         then
 734                 panic "No supported network device found, maybe a non-mainline driver is required."
 735         fi
 736
 737         if [ "${NFSROOT}" = "auto" ]
 738         then
 739                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 740         fi
 741
 742         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] ) && do_httpmount
 743         then
 744                 rc=0
 745                 return ${rc}
 746         fi
 747
 748         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 749         then
 750                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 751         fi
 752
 753         log_begin_msg "Trying netboot from ${NFSROOT}"
 754
 755         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 756         then
 757                 rc=0
 758         elif do_nfsmount
 759         then
 760                 NETBOOT="nfs"
 761                 export NETBOOT
 762                 rc=0
 763         fi
 764
 765         log_end_msg
 766         return ${rc}
 767 }
 768
 769 do_httpmount ()
 770 {
 771         rc=1
 772         dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 773         mount -t ramfs ram "${mountpoint}"
 774         mkdir -p "${dest}"
 775
 776         for webfile in HTTPFS FTPFS FETCH
 777         do
 778                 url="$(eval echo \"\$\{${webfile}\}\")"
 779                 extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 780
 781                 if [ -n "$url" ]
 782                 then
 783                         case "${extension}" in
 784                                 squashfs|tgz|tar)
 785                                         if [ "${webfile}" = "FETCH" ]
 786                                         then
 787                                                 case "$url" in
 788                                                         tftp*)
 789                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 790                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 791                                                                 lfile="$(basename $url)"
 792                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 793                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 794                                                         ;;
 795
 796                                                         *)
 797                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 798                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 799                                                                 ;;
 800                                                 esac
 801                                         else
 802                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 803                                                 if [ "${webfile}" = "FTPFS" ]
 804                                                 then
 805                                                         FUSE_MOUNT="curlftpfs"
 806                                                         url="$(dirname ${url})"
 807                                                 else
 808                                                         FUSE_MOUNT="httpfs"
 809                                                 fi
 810                                                 modprobe fuse
 811                                                 $FUSE_MOUNT "${url}" "${dest}"
 812                                         fi
 813                                         [ ${?} -eq 0 ] && rc=0
 814                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 815                                         break
 816                                         ;;
 817
 818                                 *)
 819                                         log_begin_msg "Unrecognized archive extension for ${url}"
 820                                         ;;
 821                         esac
 822                 fi
 823         done
 824
 825         if [ ${rc} != 0 ]
 826         then
 827             umount "${mountpoint}"
 828         fi
 829
 830         return ${rc}
 831 }
 832
 833 do_nfsmount ()
 834 {
 835         rc=1
 836
 837         modprobe -q nfs
 838
 839         if [ -z "${NFSOPTS}" ]
 840         then
 841                 NFSOPTS=""
 842         fi
 843
 844         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 845
 846         # FIXME: This while loop is an ugly HACK round an nfs bug
 847         i=0
 848         while [ "$i" -lt 60 ]
 849         do
 850                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 851                 sleep 1
 852                 i="$(($i + 1))"
 853         done
 854
 855         return ${rc}
 856 }
 857
 858 do_cifsmount ()
 859 {
 860         rc=1
 861
 862         if [ -x "/sbin/mount.cifs" ]
 863         then
 864                 if [ -z "${NFSOPTS}" ]
 865                 then
 866                         CIFSOPTS="-ouser=root,password="
 867                 else
 868                         CIFSOPTS="${NFSOPTS}"
 869                 fi
 870
 871                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 872                 modprobe -q cifs
 873
 874                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 875                 then
 876                         rc=0
 877                 fi
 878         fi
 879
 880         return ${rc}
 881 }
 882
 883 do_snap_copy ()
 884 {
 885         fromdev="${1}"
 886         todir="${2}"
 887         snap_type="${3}"
 888         size=$(fs_size "${fromdev}" "" "used")
 889
 890         if [ -b "${fromdev}" ]
 891         then
 892                 # look for free mem
 893                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 894                 then
 895                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 896                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 897                 else
 898                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo))
 899                 fi
 900
 901                 tomount="/mnt/tmpsnap"
 902
 903                 if [ ! -d "${tomount}" ]
 904                 then
 905                         mkdir -p "${tomount}"
 906                 fi
 907
 908                 fstype=$(get_fstype "${fromdev}")
 909
 910                 if [ -n "${fstype}" ]
 911                 then
 912                         # Copying stuff...
 913                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 914                         cp -a "${tomount}"/* ${todir}
 915                         umount "${tomount}"
 916                 else
 917                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 918                 fi
 919
 920                 rmdir "${tomount}"
 921
 922                 if echo ${fromdev} | grep -qs loop
 923                 then
 924                         losetup -d "${fromdev}"
 925                 fi
 926
 927                 return 0
 928         else
 929                 return 1
 930
 931                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 932         fi
 933 }
 934
 935 find_snap ()
 936 {
 937         # Look for ${snap_label}.* in block devices
 938         snap_label="${1}"
 939
 940         if [ "${PERSISTENT}" != "nofiles" ]
 941         then
 942                 # search for image files
 943                 snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.ext4 ${snap_label}.jffs2")
 944         fi
 945
 946         if [ -z "${snapdata}" ]
 947         then
 948                 snapdata=$(find_cow_device "${snap_label}")
 949         fi
 950         echo "${snapdata}"
 951 }
 952
 953 try_snap ()
 954 {
 955         # copy the contents of previously found snapshot to ${snap_mount}
 956         # and remember the device and filename for resync on exit in live-initramfs.init
 957
 958         snapdata="${1}"
 959         snap_mount="${2}"
 960         snap_type="${3}"
 961
 962         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
 963         then
 964                 log_success_msg "found snapshot: ${snapdata}"
 965                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 966                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 967                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 968
 969                 RES=""
 970                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 971                 then
 972                         break
 973                 fi
 974
 975                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
 976                 then
 977                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
 978                         dev=$(get_backing_device "${snapback}/${snapfile}")
 979
 980                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 981                         RES=$?
 982                 else
 983                         # cpio.gz snapshot
 984                         cd "${snap_mount}"
 985                         zcat "${snapback}/${snapfile}" | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories > /dev/null 2>&1
 986                         RES=$?
 987                         if [ "${RES}" != "0" ]
 988                         then
 989                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories\""
 990                         fi
 991                         cd "${OLDPWD}"
 992                 fi
 993
 994                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
 995
 996                 if [ "${RES}" != "0" ]
 997                 then
 998                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
 999                 fi
1000
1001         elif [ -b "${snapdata}" ]
1002         then
1003                 # Try to find if it could be a snapshot partition
1004                 dev="${snapdata}"
1005                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1006                 if echo "${dev}" | grep -qs loop
1007                 then
1008                         # strange things happens, user confused?
1009                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1010                         snapfile=$(basename ${snaploop})
1011                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1012                 else
1013                         snapdev="${dev}"
1014                 fi
1015
1016                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1017                 then
1018                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1019                         return 1
1020                 else
1021                         if [ -n "${snapfile}" ]
1022                         then
1023                                 # it was a loop device, user confused
1024                                 umount ${snapdev}
1025                         fi
1026                 fi
1027         else
1028                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1029                 return 1
1030         fi
1031
1032         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1033         return 0
1034 }
1035
1036 setup_unionfs ()
1037 {
1038         image_directory="${1}"
1039         rootmnt="${2}"
1040         addimage_directory="${3}"
1041         modprobe -q -b ${UNIONTYPE}
1042
1043         # run-init can't deal with images in a subdir, but we're going to
1044         # move all of these away before it runs anyway.  No, we're not,
1045         # put them in / since move-mounting them into / breaks mono and
1046         # some other apps.
1047
1048         croot="/"
1049
1050         # Let's just mount the read-only file systems first
1051         rofsstring=""
1052         rofslist=""
1053         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
1054
1055         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
1056         then
1057                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
1058                 roopt="nfsro"
1059         elif [ "${UNIONTYPE}" = "aufs" ]
1060         then
1061                 roopt="rr"
1062         else
1063                 roopt="ro"
1064         fi
1065
1066         if [ -z "${PLAIN_ROOT}" ]
1067         then
1068                 # Read image names from ${MODULE}.module if it exists
1069                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1070                 then
1071                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1072                         do
1073                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1074                         done
1075                 elif [ -e "${image_directory}/${MODULE}.module" ]
1076                 then
1077                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1078                         do
1079                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1080                         done
1081                 else
1082                         # ${MODULE}.module does not exist, create a list of images
1083                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1084                         do
1085                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1086                                 do
1087                                         if [ -e "${IMAGE}" ]
1088                                         then
1089                                                 image_string="${image_string} ${IMAGE}"
1090                                         fi
1091                                 done
1092                         done
1093
1094                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1095                         then
1096                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1097                                 do
1098                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1099                                         do
1100                                                 if [ -e "${IMAGE}" ]
1101                                                 then
1102                                                         image_string="${image_string} ${IMAGE}"
1103                                                 fi
1104                                         done
1105                                 done
1106                         fi
1107
1108                         # Now sort the list
1109                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1110                 fi
1111
1112         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1113
1114                 mkdir -p "${croot}"
1115
1116                 for image in ${image_string}
1117                 do
1118                         imagename=$(basename "${image}")
1119
1120                         export image devname
1121                         maybe_break live-realpremount
1122                         log_begin_msg "Running /scripts/live-realpremount"
1123                         run_scripts /scripts/live-realpremount
1124                         log_end_msg
1125
1126                         if [ -d "${image}" ]
1127                         then
1128                                 # it is a plain directory: do nothing
1129                                 rofsstring="${image}=${roopt}:${rofsstring}"
1130                                 rofslist="${image} ${rofslist}"
1131                         elif [ -f "${image}" ]
1132                         then
1133                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1134                                 then
1135                                         backdev=$(get_backing_device "${image}" "-r")
1136                                 else
1137                                         backdev=$(get_backing_device "${image}")
1138                                 fi
1139                                 fstype=$(get_fstype "${backdev}")
1140
1141                                 if [ "${fstype}" = "unknown" ]
1142                                 then
1143                                         panic "Unknown file system type on ${backdev} (${image})"
1144                                 fi
1145
1146                                 if [ -z "${fstype}" ]
1147                                 then
1148                                         fstype="${imagename##*.}"
1149                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1150                                 fi
1151
1152                                 mkdir -p "${croot}/${imagename}"
1153                                 log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1154                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1155                                 log_end_msg
1156                         fi
1157                 done
1158         else
1159                 # we have a plain root system
1160                 mkdir -p "${croot}/filesystem"
1161                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1162                 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}"
1163                 # probably broken:
1164                 mount -o bind ${croot}/filesystem $mountpoint
1165                 log_end_msg
1166         fi
1167
1168         rofsstring=${rofsstring%:}
1169
1170         mkdir -p /cow
1171
1172         # Looking for "${root_persistence}" device or file
1173         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1174         then
1175                 # Load USB modules
1176                 num_block=$(ls -l /sys/block | wc -l)
1177                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1178                 do
1179                         modprobe -q -b ${module}
1180                 done
1181
1182                 if [ -x /sbin/udevadm ]
1183                 then
1184                         # lenny
1185                         udevadm trigger
1186                         udevadm settle
1187                 else
1188                         # etch
1189                         udevtrigger
1190                         udevsettle
1191                 fi
1192
1193                 # For some reason, udevsettle does not block in this scenario,
1194                 # so we sleep for a little while.
1195                 #
1196                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1197                 for timeout in 5 4 3 2 1
1198                 do
1199                         sleep 1
1200
1201                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1202                         then
1203                                 break
1204                         fi
1205                 done
1206
1207                 # search for label and files (this could be hugely optimized)
1208                 cowprobe=$(find_cow_device "${root_persistence}")
1209                 if [ -b "${cowprobe}" ]
1210                 then
1211                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1212                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1213                         # snapshots to be sure to really store some e.g key config files,
1214                         # but not on the same media
1215                         blacklistdev="${cowprobe}"
1216                         PERSISTENCE_IS_ON="1"
1217                         export PERSISTENCE_IS_ON
1218                 fi
1219                 # homecow just mount something on /home, this should be generalized some way
1220                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1221                 if [ -b "${homecow}" ]
1222                 then
1223                         PERSISTENCE_IS_ON="1"
1224                         export PERSISTENCE_IS_ON
1225                 fi
1226                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1227                 # This second type should be removed when snapshot will get smarter,
1228                 # hence when "/etc/live-snapshot*list" will be supported also by
1229                 # ext2|ext3|ext4|jffs2 snapshot types.
1230                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1231
1232                 if [ -b "${cowprobe}" ]
1233                 then
1234                         cowdevice=${cowprobe}
1235                         cow_fstype=$(get_fstype "${cowprobe}")
1236                         cow_mountopt="rw,noatime"
1237
1238                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1239                         then
1240                                 fsck -y ${cowdevice}
1241                         fi
1242                 else
1243                         log_warning_msg "Unable to find the persistent medium"
1244                         cowdevice="tmpfs"
1245                         cow_fstype="tmpfs"
1246                         cow_mountopt="rw,noatime,mode=755"
1247                 fi
1248         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1249         then
1250                 # check if there are any nfs options
1251                 if echo ${NFS_COW}|grep -q ','
1252                 then
1253                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1254                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1255                 else
1256                         nfs_cow_opts="-o nolock"
1257                         nfs_cow=${NFS_COW}
1258                 fi
1259                 mac="$(get_mac)"
1260                 if [ -n "${mac}" ]
1261                 then
1262                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1263                         cow_fstype="nfs"
1264                 else
1265                         panic "unable to determine mac address"
1266                 fi
1267         else
1268                 cowdevice="tmpfs"
1269                 cow_fstype="tmpfs"
1270                 cow_mountopt="rw,noatime,mode=755"
1271         fi
1272
1273         if [ "${cow_fstype}" = "nfs" ]
1274         then
1275                 log_begin_msg \
1276                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1277                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1278                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1279         else
1280                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1281                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1282         fi
1283
1284         rofscount=$(echo ${rofslist} |wc -w)
1285
1286         if [ -n "${EXPOSED_ROOT}" ]
1287         then
1288                 if [ ${rofscount} -ne 1 ]
1289                 then
1290                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1291                 fi
1292                 exposedrootfs=${rofslist%% }
1293
1294                 mount --bind ${exposedrootfs} ${rootmnt} || \
1295                         panic "bind mount of ${exposedrootfs} failed"
1296
1297                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1298                 then
1299                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1300                 else
1301                         cow_dirs=''
1302                 fi
1303
1304                 for dir in ${cow_dirs}; do
1305                         mkdir -p /cow${dir}
1306                         mount -t ${UNIONTYPE} \
1307                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1308                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1309                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1310                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1311                 done
1312         else
1313                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1314                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1315                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1316         fi
1317
1318         # Correct the permissions of /:
1319         chmod 0755 "${rootmnt}"
1320
1321         # tmpfs file systems
1322         touch /etc/fstab
1323         mkdir -p "${rootmnt}/live"
1324         mount -t tmpfs tmpfs ${rootmnt}/live
1325
1326         # Adding other custom mounts
1327         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1328         then
1329                 # directly mount /home
1330                 # FIXME: add a custom mounts configurable system
1331
1332                 if [ -b "${homecow}" ]
1333                 then
1334                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1335                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1336                 else
1337                         log_warning_msg "Unable to find the persistent home medium"
1338                 fi
1339
1340                 # Look for other snapshots to copy in
1341                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1342                 # This second type should be removed when snapshot grow smarter
1343                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1344         fi
1345
1346         if [ -n "${SHOWMOUNTS}" ]
1347         then
1348                 for d in ${rofslist}
1349                 do
1350                         mkdir -p "${rootmnt}/live/${d##*/}"
1351
1352                         case d in
1353                                 *.dir)
1354                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1355                                         ;;
1356
1357                                 *)
1358                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1359                                         ;;
1360                         esac
1361                 done
1362         fi
1363
1364         # shows cow fs on /cow for use by live-snapshot
1365         mkdir -p "${rootmnt}/live/cow"
1366         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 ${rootmnt}/live/cow"
1367 }
1368
1369 check_dev ()
1370 {
1371         sysdev="${1}"
1372         devname="${2}"
1373         skip_uuid_check="${3}"
1374
1375         if [ -z "${devname}" ]
1376         then
1377                 devname=$(sys2dev "${sysdev}")
1378         fi
1379
1380         if [ -d "${devname}" ]
1381         then
1382                 mount -o bind "${devname}" $mountpoint || continue
1383
1384                 if is_live_path $mountpoint
1385                 then
1386                         echo $mountpoint
1387                         return 0
1388                 else
1389                         umount $mountpoint
1390                 fi
1391         fi
1392
1393         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1394         then
1395                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1396                 devname="${loopdevname}"
1397         fi
1398
1399         fstype=$(get_fstype "${devname}")
1400
1401         if is_supported_fs ${fstype}
1402         then
1403                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1404
1405                 if is_live_path ${mountpoint} && \
1406                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1407                 then
1408                         echo ${mountpoint}
1409                         return 0
1410                 else
1411                         umount ${mountpoint}
1412                 fi
1413         fi
1414
1415         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1416         then
1417                 losetup -d "${loopdevname}"
1418         fi
1419
1420         return 1
1421 }
1422
1423 find_livefs ()
1424 {
1425         timeout="${1}"
1426
1427         # don't start autodetection before timeout has expired
1428         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1429         then
1430                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1431                 then
1432                         return 1
1433                 fi
1434         fi
1435
1436         # first look at the one specified in the command line
1437         case "${LIVE_MEDIA}" in
1438                 removable-usb)
1439                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1440                         do
1441                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1442                                 then
1443                                         if readlink ${sysblock} | grep -q usb ||
1444                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1445                                         then
1446                                                 for dev in $(subdevices "${sysblock}")
1447                                                 do
1448                                                         if check_dev "${dev}"
1449                                                         then
1450                                                                 return 0
1451                                                         fi
1452                                                 done
1453                                         fi
1454                                 fi
1455                         done
1456                         ;;
1457
1458                 removable)
1459                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1460                         do
1461                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1462                                 then
1463                                         for dev in $(subdevices "${sysblock}")
1464                                         do
1465                                                 if check_dev "${dev}"
1466                                                 then
1467                                                         return 0
1468                                                 fi
1469                                         done
1470                                 fi
1471                         done
1472                         ;;
1473
1474                 *)
1475                         if [ ! -z "${LIVE_MEDIA}" ]
1476                         then
1477                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1478                                 then
1479                                         return 0
1480                                 fi
1481                         fi
1482                         ;;
1483         esac
1484
1485         # or do the scan of block devices
1486         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1487         do
1488                 devname=$(sys2dev "${sysblock}")
1489                 fstype=$(get_fstype "${devname}")
1490
1491                 if /lib/udev/cdrom_id ${devname} > /dev/null
1492                 then
1493                         if check_dev "null" "${devname}"
1494                         then
1495                                 return 0
1496                         fi
1497                 elif is_nice_device "${sysblock}"
1498                 then
1499                         for dev in $(subdevices "${sysblock}")
1500                         do
1501                                 if check_dev "${dev}"
1502                                 then
1503                                         return 0
1504                                 fi
1505                         done
1506                 elif [ "${fstype}" = "squashfs" -o \
1507                         "${fstype}" = "ext2" -o \
1508                         "${fstype}" = "ext3" -o \
1509                         "${fstype}" = "ext4" -o \
1510                         "${fstype}" = "jffs2" ]
1511                 then
1512                         # This is an ugly hack situation, the block device has
1513                         # an image directly on it.  It's hopefully
1514                         # live-initramfs, so take it and run with it.
1515                         ln -s "${devname}" "${devname}.${fstype}"
1516                         echo "${devname}.${fstype}"
1517                         return 0
1518                 fi
1519         done
1520
1521         return 1
1522 }
1523
1524 set_usplash_timeout ()
1525 {
1526         if [ -x /sbin/usplash_write ]
1527         then
1528                 /sbin/usplash_write "TIMEOUT 120"
1529         else if [ -x /sbin/splashy_update ] ; then
1530                 /sbin/splashy_update "TIMEOUT 120"
1531         fi ; fi
1532 }
1533
1534 integrity_check ()
1535 {
1536         media_mountpoint="${1}"
1537
1538         log_begin_msg "Checking media integrity"
1539
1540         cd ${media_mountpoint}
1541         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1542         RC="${?}"
1543
1544         log_end_msg
1545
1546         if [ "${RC}" -eq 0 ]
1547         then
1548                 log_success_msg "Everything ok, will reboot in 10 seconds."
1549                 sleep 10
1550                 cd /
1551                 umount ${media_mountpoint}
1552                 sync
1553                 echo u > /proc/sysrq-trigger
1554                 echo b > /proc/sysrq-trigger
1555         else
1556                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1557         fi
1558 }
1559
1560 mountroot ()
1561 {
1562         if [ -x /scripts/local-top/cryptroot ]; then
1563             /scripts/local-top/cryptroot
1564         fi
1565
1566         exec 6>&1
1567         exec 7>&2
1568         exec > live.log
1569         exec 2>&1
1570         tail -f live.log >&7 &
1571         tailpid="${!}"
1572
1573         # Ensure 'panic' function is overridden
1574         . /scripts/live-functions
1575
1576         Arguments
1577
1578         set_usplash_timeout
1579
1580         maybe_break live-premount
1581         log_begin_msg "Running /scripts/live-premount"
1582         run_scripts /scripts/live-premount
1583         log_end_msg
1584
1585         # Needed here too because some things (*cough* udev *cough*)
1586         # changes the timeout
1587
1588         set_usplash_timeout
1589
1590         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1591         then
1592                 if do_netmount
1593                 then
1594                         livefs_root="${mountpoint}"
1595                 else
1596                         panic "Unable to find a live file system on the network"
1597                 fi
1598         else
1599                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1600                 then
1601                         # Do a local boot from hd
1602                         livefs_root=${ROOT}
1603                 else
1604                         # Scan local devices for the image
1605                         i=0
1606                         while [ "$i" -lt 60 ]
1607                         do
1608                                 livefs_root=$(find_livefs ${i})
1609
1610                                 if [ -n "${livefs_root}" ]
1611                                 then
1612                                         break
1613                                 fi
1614
1615                                 sleep 1
1616                                 i="$(($i + 1))"
1617                         done
1618                 fi
1619         fi
1620
1621         if [ -z "${livefs_root}" ]
1622         then
1623                 panic "Unable to find a medium containing a live file system"
1624         fi
1625
1626         if [ "${INTEGRITY_CHECK}" ]
1627         then
1628                 integrity_check "${livefs_root}"
1629         fi
1630
1631         if [ "${TORAM}" ]
1632         then
1633                 live_dest="ram"
1634         elif [ "${TODISK}" ]
1635         then
1636                 live_dest="${TODISK}"
1637         fi
1638
1639         if [ "${live_dest}" ]
1640         then
1641                 log_begin_msg "Copying live media to ${live_dest}"
1642                 copy_live_to "${livefs_root}" "${live_dest}"
1643                 log_end_msg
1644         fi
1645
1646         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1647         then
1648                 setup_unionfs "${livefs_root}" "${rootmnt}"
1649         else
1650                 mac="$(get_mac)"
1651                 mac="$(echo ${mac} | sed 's/-//g')"
1652                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1653         fi
1654
1655         log_end_msg
1656
1657         maybe_break live-bottom
1658         log_begin_msg "Running /scripts/live-bottom\n"
1659
1660         run_scripts /scripts/live-bottom
1661         log_end_msg
1662
1663         exec 1>&6 6>&-
1664         exec 2>&7 7>&-
1665         kill ${tailpid}
1666         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1667 }