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