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                         ethdevice=*)
  70                                 DEVICE="${ARGUMENT#ethdevice=}"
  71                                 export DEVICE
  72                                 ;;
  73
  74                         fetch=*)
  75                                 FETCH="${ARGUMENT#fetch=}"
  76                                 export FETCH
  77                                 ;;
  78
  79                         forcepersistentfsck)
  80                                 FORCEPERSISTENTFSCK="Yes"
  81                                 export FORCEPERSISTENTFSCK
  82                                 ;;
  83
  84                         hook=*)
  85                                 HOOK="${ARGUMENT#hook=}"
  86                                 export HOOK
  87                                 ;;
  88
  89                         ftpfs=*)
  90                                 FTPFS="${ARGUMENT#ftpfs=}"
  91                                 export FTPFS
  92                                 ;;
  93
  94                         httpfs=*)
  95                                 HTTPFS="${ARGUMENT#httpfs=}"
  96                                 export HTTPFS
  97                                 ;;
  98
  99                         hostname=*)
 100                                 HOSTNAME="${ARGUMENT#hostname=}"
 101                                 LIVECONF="changed"
 102                                 export HOSTNAME LIVECONF
 103                                 ;;
 104
 105                         isofrom=*|fromiso=*)
 106                                 FROMISO="${ARGUMENT#*=}"
 107                                 export FROMISO
 108                                 ;;
 109
 110                         username=*)
 111                                 USERNAME="${ARGUMENT#username=}"
 112                                 LIVECONF="changed"
 113                                 export USERNAME LIVECONF
 114                                 ;;
 115
 116                         userfullname=*)
 117                                 USERFULLNAME="${ARGUMENT#userfullname=}"
 118                                 LIVECONF="changed"
 119                                 export USERFULLNAME LIVECONF
 120                                 ;;
 121
 122                         ignore_uuid)
 123                                 IGNORE_UUID="Yes"
 124                                 export IGNORE_UUID
 125                                 ;;
 126
 127                         integrity-check)
 128                                 INTEGRITY_CHECK="Yes"
 129                                 export INTEGRITY_CHECK
 130                                 ;;
 131
 132                         ip=*)
 133                                 STATICIP="${ARGUMENT#ip=}"
 134
 135                                 if [ -z "${STATICIP}" ]
 136                                 then
 137                                         STATICIP="frommedia"
 138                                 fi
 139
 140                                 export STATICIP
 141                                 ;;
 142
 143                         keyb=*|kbd-chooser/method=*)
 144                                 KBD="${ARGUMENT#*=}"
 145                                 export KBD
 146                                 ;;
 147
 148                         klayout=*|console-setup/layoutcode=*)
 149                                 KLAYOUT="${ARGUMENT#*=}"
 150                                 export KLAYOUT
 151                                 ;;
 152
 153                         kvariant=*|console-setup/variantcode=*)
 154                                 KVARIANT="${ARGUMENT#*=}"
 155                                 export KVARIANT
 156                                 ;;
 157
 158                         kmodel=*|console-setup/modelcode=*)
 159                                 KMODEL="${ARGUMENT#*=}"
 160                                 export KMODEL
 161                                 ;;
 162
 163                         koptions=*)
 164                                 KOPTIONS="${ARGUMENT#koptions=}"
 165                                 export KOPTIONS
 166                                 ;;
 167
 168                         live-getty)
 169                                 LIVE_GETTY="1"
 170                                 export LIVE_GETTY
 171                                 ;;
 172
 173                         live-media=*|bootfrom=*)
 174                                 LIVE_MEDIA="${ARGUMENT#*=}"
 175                                 export LIVE_MEDIA
 176                                 ;;
 177
 178                         live-media-encryption=*|encryption=*)
 179                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 180                                 export LIVE_MEDIA_ENCRYPTION
 181                                 ;;
 182
 183                         live-media-offset=*)
 184                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 185                                 export LIVE_MEDIA_OFFSET
 186                                 ;;
 187
 188                         live-media-path=*)
 189                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 190                                 export LIVE_MEDIA_PATH
 191                                 ;;
 192
 193                         live-media-timeout=*)
 194                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 195                                 export LIVE_MEDIA_TIMEOUT
 196                                 ;;
 197
 198                         language=*|debian-installer/language=*)
 199                                 language=${x#debian-installer/language=}
 200                                 locale="$(lang2locale "$language")"
 201                                 set_locale="true"
 202                                 ;;
 203
 204                         locale=*|debian-installer/locale=*)
 205                                 LOCALE="${ARGUMENT#*=}"
 206                                 export LOCALE
 207                                 ;;
 208
 209                         module=*)
 210                                 MODULE="${ARGUMENT#module=}"
 211                                 export MODULE
 212                                 ;;
 213
 214                         netboot=*)
 215                                 NETBOOT="${ARGUMENT#netboot=}"
 216                                 export NETBOOT
 217                                 ;;
 218
 219                         nfsopts=*)
 220                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 221                                 export NFSOPTS
 222                                 ;;
 223
 224                         nfscow=*)
 225                                 NFS_COW="${ARGUMENT#nfscow=}"
 226                                 export NFS_COW
 227                                 ;;
 228
 229                         noaccessibility)
 230                                 NOACCESSIBILITY="Yes"
 231                                 export NOACCESSIBILITY
 232                                 ;;
 233
 234                         noapparmor)
 235                                 NOAPPARMOR="Yes"
 236                                 export NOAPPARMOR
 237                                 ;;
 238
 239                         noaptcdrom)
 240                                 NOAPTCDROM="Yes"
 241                                 export NOAPTCDROM
 242                                 ;;
 243
 244                         noautologin)
 245                                 NOAUTOLOGIN="Yes"
 246                                 export NOAUTOLOGIN
 247                                 ;;
 248
 249                         noxautologin)
 250                                 NOXAUTOLOGIN="Yes"
 251                                 export NOXAUTOLOGIN
 252                                 ;;
 253
 254                         noconsolekeyboard)
 255                                 NOCONSOLEKEYBOARD="Yes"
 256                                 export NOCONSOLEKEYBOARD
 257                                 ;;
 258
 259                         nofastboot)
 260                                 NOFASTBOOT="Yes"
 261                                 export NOFASTBOOT
 262                                 ;;
 263
 264                         nofstab)
 265                                 NOFSTAB="Yes"
 266                                 export NOFSTAB
 267                                 ;;
 268
 269                         nognomepanel)
 270                                 NOGNOMEPANEL="Yes"
 271                                 export NOGNOMEPANEL
 272                                 ;;
 273
 274                         nohosts)
 275                                 NOHOSTS="Yes"
 276                                 export NOHOSTS
 277                                 ;;
 278
 279                         nokpersonalizer)
 280                                 NOKPERSONALIZER="Yes"
 281                                 export NOKPERSONALIZER
 282                                 ;;
 283
 284                         nolanguageselector)
 285                                 NOLANGUAGESELECTOR="Yes"
 286                                 export NOLANGUAGESELECTOR
 287                                 ;;
 288
 289                         nolocales)
 290                                 NOLOCALES="Yes"
 291                                 export NOLOCALES
 292                                 ;;
 293
 294                         nonetworking)
 295                                 NONETWORKING="Yes"
 296                                 export NONETWORKING
 297                                 ;;
 298
 299                         nopowermanagement)
 300                                 NOPOWERMANAGEMENT="Yes"
 301                                 export NOPOWERMANAGEMENT
 302                                 ;;
 303
 304                         noprogramcrashes)
 305                                 NOPROGRAMCRASHES="Yes"
 306                                 export NOPROGRAMCRASHES
 307                                 ;;
 308
 309                         nojockey)
 310                                 NOJOCKEY="Yes"
 311                                 export NOJOCKEY
 312                                 ;;
 313
 314                         nosudo)
 315                                 NOSUDO="Yes"
 316                                 export NOSUDO
 317                                 ;;
 318
 319                         swapon)
 320                                 SWAPON="Yes"
 321                                 export SWAPON
 322                                 ;;
 323
 324                         noupdatenotifier)
 325                                 NOUPDATENOTIFIER="Yes"
 326                                 export NOUPDATENOTIFIER
 327                                 ;;
 328
 329                         nouser)
 330                                 NOUSER="Yes"
 331                                 export NOUSER
 332                                 ;;
 333
 334                         noxautoconfig)
 335                                 NOXAUTOCONFIG="Yes"
 336                                 export NOXAUTOCONFIG
 337                                 ;;
 338
 339                         noxscreensaver)
 340                                 NOXSCREENSAVER="Yes"
 341                                 export NOXSCREENSAVER
 342                                 ;;
 343
 344                         persistent)
 345                                 PERSISTENT="Yes"
 346                                 export PERSISTENT
 347                                 ;;
 348
 349                         persistent=*)
 350                                 PERSISTENT="${ARGUMENT#persistent=}"
 351                                 if [ -z "${PERSISTENT}" ]
 352                                 then
 353                                         PERSISTENT="Yes"
 354                                 fi
 355                                 export PERSISTENT
 356                                 ;;
 357
 358                         persistent-path=*)
 359                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 360                                 export PERSISTENT_PATH
 361                                 ;;
 362
 363                         persistent-subtext=*)
 364                                 root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
 365                                 home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
 366                                 root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 367                                 home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 368                                 ;;
 369
 370                         nopersistent)
 371                                 NOPERSISTENT="Yes"
 372                                 export NOPERSISTENT
 373                                 ;;
 374
 375                         preseed/file=*|file=*)
 376                                 LOCATION="${ARGUMENT#*=}"
 377                                 export LOCATION
 378                                 ;;
 379
 380                         nopreseed)
 381                                 NOPRESEED="Yes"
 382                                 export NOPRESEED
 383                                 ;;
 384
 385                         url=*)
 386                                 location="${ARGUMENT#url=}"
 387
 388                                 mount -o bind /sys /root/sys
 389                                 mount -o bind /proc /root/proc
 390                                 mount -o bind /dev /root/dev
 391
 392                                 mkdir -p /root/var/run/network
 393                                 [ "${NETBOOT}" ] || chroot /root dhclient eth0
 394                                 chroot /root wget -P /tmp "${location}"
 395                                 [ "${NETBOOT}" ] || chroot /root ifconfig eth0 down
 396
 397                                 umount /root/sys
 398                                 umount /root/proc
 399                                 umount /root/dev
 400
 401                                 LOCATION="/tmp/$(basename "${location}")"
 402                                 ;;
 403
 404                         */*=*)
 405                                 question="${ARGUMENT%%=*}"
 406                                 value="${ARGUMENT#*=}"
 407                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 408                                 export PRESEEDS
 409                                 ;;
 410
 411                         showmounts)
 412                                 SHOWMOUNTS="Yes"
 413                                 export SHOWMOUNTS
 414                                 ;;
 415
 416                         silent)
 417                                 SILENT="Yes"
 418                                 export SILENT
 419                                 ;;
 420
 421                         textonly)
 422                                 TEXTONLY="Yes"
 423                                 export TEXTONLY
 424                                 ;;
 425
 426                         timezone=*)
 427                                 TIMEZONE="${ARGUMENT#timezone=}"
 428                                 export TIMEZONE
 429                                 ;;
 430
 431                         notimezone)
 432                                 NOTIMEZONE="Yes"
 433                                 export NOTIMEZONE
 434                                 ;;
 435
 436                         todisk=*)
 437                                 TODISK="${ARGUMENT#todisk=}"
 438                                 export TODISK
 439                                 ;;
 440
 441                         toram)
 442                                 TORAM="Yes"
 443                                 export TORAM
 444                                 ;;
 445
 446                         toram=*)
 447                                 TORAM="Yes"
 448                                 MODULETORAM="${ARGUMENT#toram=}"
 449                                 export TORAM MODULETORAM
 450                                 ;;
 451
 452                         exposedroot)
 453                                 EXPOSED_ROOT="Yes"
 454                                 export EXPOSED_ROOT
 455                                 ;;
 456
 457                         plainroot)
 458                                 PLAIN_ROOT="Yes"
 459                                 export PLAIN_ROOT
 460                                 ;;
 461
 462                         skipunion)
 463                                 SKIP_UNION_MOUNTS="Yes"
 464                                 export SKIP_UNION_MOUNTS
 465                                 ;;
 466
 467                         root=*)
 468                                 ROOT="${ARGUMENT#root=}"
 469                                 export ROOT
 470                                 ;;
 471
 472                         union=*)
 473                                 UNIONTYPE="${ARGUMENT#union=}"
 474                                 export UNIONTYPE
 475                                 ;;
 476
 477                         utc=*)
 478                                 UTC="${ARGUMENT#utc=}"
 479                                 export UTC
 480                                 ;;
 481
 482                         xdebconf)
 483                                 XDEBCONF="Yes"
 484                                 export XDEBCONF
 485                                 ;;
 486
 487                         xdriver=*)
 488                                 XDRIVER="${ARGUMENT#xdriver=}"
 489                                 export XDRIVER
 490                                 ;;
 491
 492                         xvideomode=*)
 493                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 494                                 export XVIDEOMODE
 495                                 ;;
 496                 esac
 497         done
 498
 499         # sort of compatibility with netboot.h from linux docs
 500         if [ -z "${NETBOOT}" ]
 501         then
 502                 if [ "${ROOT}" = "/dev/nfs" ]
 503                 then
 504                         NETBOOT="nfs"
 505                         export NETBOOT
 506                 elif [ "${ROOT}" = "/dev/cifs" ]
 507                 then
 508                         NETBOOT="cifs"
 509                         export NETBOOT
 510                 fi
 511         fi
 512
 513         if [ -z "${MODULE}" ]
 514         then
 515                 MODULE="filesystem"
 516                 export MODULE
 517         fi
 518
 519         if [ -z "${UNIONTYPE}" ]
 520         then
 521                 UNIONTYPE="aufs"
 522                 export UNIONTYPE
 523         fi
 524 }
 525
 526 is_live_path ()
 527 {
 528         DIRECTORY="${1}"
 529
 530         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 531         then
 532                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 533                 do
 534                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 535                         then
 536                                 return 0
 537                         fi
 538                 done
 539         fi
 540
 541         return 1
 542 }
 543
 544 matches_uuid ()
 545 {
 546         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 547         then
 548                 return 0
 549         fi
 550
 551         path="${1}"
 552         uuid="$(cat /conf/uuid.conf)"
 553
 554         for try_uuid_file in "${path}/.disk/live-uuid"*
 555         do
 556                 [ -e "${try_uuid_file}" ] || continue
 557
 558                 try_uuid="$(cat "${try_uuid_file}")"
 559
 560                 if [ "${uuid}" = "${try_uuid}" ]
 561                 then
 562                         return 0
 563                 fi
 564         done
 565
 566         return 1
 567 }
 568
 569 get_backing_device ()
 570 {
 571         case "${1}" in
 572                 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 573                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 574                         ;;
 575
 576                 *.dir)
 577                         echo "directory"
 578                         ;;
 579
 580                 *)
 581                         panic "Unrecognized live filesystem: ${1}"
 582                         ;;
 583         esac
 584 }
 585
 586 match_files_in_dir ()
 587 {
 588         # Does any files match pattern ${1} ?
 589         local pattern="${1}"
 590
 591         if [ "$(echo ${pattern})" != "${pattern}" ]
 592         then
 593                 return 0
 594         fi
 595
 596         return 1
 597 }
 598
 599 mount_images_in_directory ()
 600 {
 601         directory="${1}"
 602         rootmnt="${2}"
 603         mac="${3}"
 604
 605
 606         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 607                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 608                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 609                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 610                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 611                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 612         then
 613                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 614                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 615         else
 616                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 617         fi
 618 }
 619
 620 is_nice_device ()
 621 {
 622         sysfs_path="${1#/sys}"
 623
 624         if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-)"
 625         then
 626                 return 0
 627         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 628         then
 629                 return 0
 630         fi
 631
 632         return 1
 633 }
 634
 635 copy_live_to ()
 636 {
 637         copyfrom="${1}"
 638         copytodev="${2}"
 639         copyto="${copyfrom}_swap"
 640
 641         if [ -z "${MODULETORAM}" ]
 642         then
 643                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 644         else
 645                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 646
 647                 if [ -f "${MODULETORAMFILE}" ]
 648                 then
 649                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 650                 else
 651                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 652                         return 1
 653                 fi
 654         fi
 655
 656         if [ "${copytodev}" = "ram" ]
 657         then
 658                 # copying to ram:
 659                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo ) )
 660                 mount_options="-o size=${size}k"
 661                 free_string="memory"
 662                 fstype="tmpfs"
 663                 dev="/dev/shm"
 664         else
 665                 # it should be a writable block device
 666                 if [ -b "${copytodev}" ]
 667                 then
 668                         dev="${copytodev}"
 669                         free_string="space"
 670                         fstype=$(get_fstype "${dev}")
 671                         freespace=$(fs_size "${dev}")
 672                 else
 673                         log_warning_msg "${copytodev} is not a block device."
 674                         return 1
 675                 fi
 676         fi
 677
 678         if [ "${freespace}" -lt "${size}" ]
 679         then
 680                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 681                 return 1
 682         fi
 683
 684         # begin copying (or uncompressing)
 685         mkdir "${copyto}"
 686         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 687         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 688
 689         if [ "${extension}" = "tgz" ]
 690         then
 691                 cd "${copyto}"
 692                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 693                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 694                 mount -r -o move "${copyto}" "${rootmnt}"
 695                 cd "${OLDPWD}"
 696         else
 697                 if [ -n "${MODULETORAMFILE}" ]
 698                 then
 699                         if [ -x /bin/rsync ]
 700                         then
 701                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 702                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 703                         else
 704                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 705                         fi
 706                 else
 707                         if [ -x /bin/rsync ]
 708                         then
 709                                 echo " * Copying whole medium to RAM" 1>/dev/console
 710                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 711                         else
 712                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 713                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}   # "cp -a" from busybox also copies hidden files
 714                         fi
 715                 fi
 716
 717                 umount ${copyfrom}
 718                 mount -r -o move ${copyto} ${copyfrom}
 719         fi
 720
 721         rmdir ${copyto}
 722         return 0
 723 }
 724
 725 do_netmount ()
 726 {
 727         rc=1
 728
 729         modprobe -q af_packet # For DHCP
 730
 731         if [ -x /sbin/udevadm ]
 732         then
 733                 # lenny
 734                 udevadm trigger
 735                 udevadm settle
 736         else
 737                 # etch
 738                 udevtrigger
 739                 udevsettle
 740         fi
 741
 742         ipconfig ${DEVICE} | tee /netboot.config
 743
 744         # source relevant ipconfig output
 745         OLDHOSTNAME=${HOSTNAME}
 746         . /tmp/net-${DEVICE}.conf
 747         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 748         export HOSTNAME
 749
 750         # Check if we have a network device at all
 751         if ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 752            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 753            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 754            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 755         then
 756                 panic "No supported network device found, maybe a non-mainline driver is required."
 757         fi
 758
 759         if [ "${NFSROOT}" = "auto" ]
 760         then
 761                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 762         fi
 763
 764         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] ) && do_httpmount
 765         then
 766                 rc=0
 767                 return ${rc}
 768         fi
 769
 770         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 771         then
 772                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 773         fi
 774
 775         log_begin_msg "Trying netboot from ${NFSROOT}"
 776
 777         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 778         then
 779                 rc=0
 780         elif do_nfsmount
 781         then
 782                 NETBOOT="nfs"
 783                 export NETBOOT
 784                 rc=0
 785         fi
 786
 787         log_end_msg
 788         return ${rc}
 789 }
 790
 791 do_httpmount ()
 792 {
 793         rc=1
 794         dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 795         mount -t ramfs ram "${mountpoint}"
 796         mkdir -p "${dest}"
 797
 798         for webfile in HTTPFS FTPFS FETCH
 799         do
 800                 url="$(eval echo \"\$\{${webfile}\}\")"
 801                 extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 802
 803                 if [ -n "$url" ]
 804                 then
 805                         case "${extension}" in
 806                                 squashfs|tgz|tar)
 807                                         if [ "${webfile}" = "FETCH" ]
 808                                         then
 809                                                 case "$url" in
 810                                                         tftp*)
 811                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 812                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 813                                                                 lfile="$(basename $url)"
 814                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 815                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 816                                                         ;;
 817
 818                                                         *)
 819                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 820                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 821                                                                 ;;
 822                                                 esac
 823                                         else
 824                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 825                                                 if [ "${webfile}" = "FTPFS" ]
 826                                                 then
 827                                                         FUSE_MOUNT="curlftpfs"
 828                                                         url="$(dirname ${url})"
 829                                                 else
 830                                                         FUSE_MOUNT="httpfs"
 831                                                 fi
 832                                                 modprobe fuse
 833                                                 $FUSE_MOUNT "${url}" "${dest}"
 834                                         fi
 835                                         [ ${?} -eq 0 ] && rc=0
 836                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 837                                         break
 838                                         ;;
 839
 840                                 *)
 841                                         log_begin_msg "Unrecognized archive extension for ${url}"
 842                                         ;;
 843                         esac
 844                 fi
 845         done
 846
 847         if [ ${rc} != 0 ]
 848         then
 849             umount "${mountpoint}"
 850         fi
 851
 852         return ${rc}
 853 }
 854
 855 do_nfsmount ()
 856 {
 857         rc=1
 858
 859         modprobe -q nfs
 860
 861         if [ -z "${NFSOPTS}" ]
 862         then
 863                 NFSOPTS=""
 864         fi
 865
 866         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 867
 868         # FIXME: This while loop is an ugly HACK round an nfs bug
 869         i=0
 870         while [ "$i" -lt 60 ]
 871         do
 872                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 873                 sleep 1
 874                 i="$(($i + 1))"
 875         done
 876
 877         return ${rc}
 878 }
 879
 880 do_cifsmount ()
 881 {
 882         rc=1
 883
 884         if [ -x "/sbin/mount.cifs" ]
 885         then
 886                 if [ -z "${NFSOPTS}" ]
 887                 then
 888                         CIFSOPTS="-ouser=root,password="
 889                 else
 890                         CIFSOPTS="${NFSOPTS}"
 891                 fi
 892
 893                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 894                 modprobe -q cifs
 895
 896                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 897                 then
 898                         rc=0
 899                 fi
 900         fi
 901
 902         return ${rc}
 903 }
 904
 905 do_snap_copy ()
 906 {
 907         fromdev="${1}"
 908         todir="${2}"
 909         snap_type="${3}"
 910         size=$(fs_size "${fromdev}" "" "used")
 911
 912         if [ -b "${fromdev}" ]
 913         then
 914                 # look for free mem
 915                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 916                 then
 917                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 918                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 919                 else
 920                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( awk '/\<Cached/{print $2}' /proc/meminfo))
 921                 fi
 922
 923                 tomount="/mnt/tmpsnap"
 924
 925                 if [ ! -d "${tomount}" ]
 926                 then
 927                         mkdir -p "${tomount}"
 928                 fi
 929
 930                 fstype=$(get_fstype "${fromdev}")
 931
 932                 if [ -n "${fstype}" ]
 933                 then
 934                         # Copying stuff...
 935                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 936                         cp -a "${tomount}"/* ${todir}
 937                         umount "${tomount}"
 938                 else
 939                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 940                 fi
 941
 942                 rmdir "${tomount}"
 943
 944                 if echo ${fromdev} | grep -qs loop
 945                 then
 946                         losetup -d "${fromdev}"
 947                 fi
 948
 949                 return 0
 950         else
 951                 return 1
 952
 953                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 954         fi
 955 }
 956
 957 find_snap ()
 958 {
 959         # Look for ${snap_label}.* in block devices
 960         snap_label="${1}"
 961
 962         if [ "${PERSISTENT}" != "nofiles" ]
 963         then
 964                 # search for image files
 965                 snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.ext4 ${snap_label}.jffs2")
 966         fi
 967
 968         if [ -z "${snapdata}" ]
 969         then
 970                 snapdata=$(find_cow_device "${snap_label}")
 971         fi
 972         echo "${snapdata}"
 973 }
 974
 975 try_snap ()
 976 {
 977         # copy the contents of previously found snapshot to ${snap_mount}
 978         # and remember the device and filename for resync on exit in live-initramfs.init
 979
 980         snapdata="${1}"
 981         snap_mount="${2}"
 982         snap_type="${3}"
 983
 984         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
 985         then
 986                 log_success_msg "found snapshot: ${snapdata}"
 987                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 988                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 989                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 990
 991                 RES=""
 992                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 993                 then
 994                         break
 995                 fi
 996
 997                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
 998                 then
 999                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
1000                         dev=$(get_backing_device "${snapback}/${snapfile}")
1001
1002                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1003                         RES=$?
1004                 else
1005                         # cpio.gz snapshot
1006                         cd "${snap_mount}"
1007                         zcat "${snapback}/${snapfile}" | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories > /dev/null 2>&1
1008                         RES=$?
1009                         if [ "${RES}" != "0" ]
1010                         then
1011                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | /bin/cpio --extract --preserve-modification-time --no-absolute-filenames --sparse --unconditional --make-directories\""
1012                         fi
1013                         cd "${OLDPWD}"
1014                 fi
1015
1016                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1017
1018                 if [ "${RES}" != "0" ]
1019                 then
1020                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1021                 fi
1022
1023         elif [ -b "${snapdata}" ]
1024         then
1025                 # Try to find if it could be a snapshot partition
1026                 dev="${snapdata}"
1027                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1028                 if echo "${dev}" | grep -qs loop
1029                 then
1030                         # strange things happens, user confused?
1031                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1032                         snapfile=$(basename ${snaploop})
1033                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1034                 else
1035                         snapdev="${dev}"
1036                 fi
1037
1038                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1039                 then
1040                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1041                         return 1
1042                 else
1043                         if [ -n "${snapfile}" ]
1044                         then
1045                                 # it was a loop device, user confused
1046                                 umount ${snapdev}
1047                         fi
1048                 fi
1049         else
1050                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1051                 return 1
1052         fi
1053
1054         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1055         return 0
1056 }
1057
1058 setup_unionfs ()
1059 {
1060         image_directory="${1}"
1061         rootmnt="${2}"
1062         addimage_directory="${3}"
1063         modprobe -q -b ${UNIONTYPE}
1064
1065         # run-init can't deal with images in a subdir, but we're going to
1066         # move all of these away before it runs anyway.  No, we're not,
1067         # put them in / since move-mounting them into / breaks mono and
1068         # some other apps.
1069
1070         croot="/"
1071
1072         # Let's just mount the read-only file systems first
1073         rofsstring=""
1074         rofslist=""
1075         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
1076
1077         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
1078         then
1079                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
1080                 roopt="nfsro"
1081         elif [ "${UNIONTYPE}" = "aufs" ]
1082         then
1083                 roopt="rr"
1084         else
1085                 roopt="ro"
1086         fi
1087
1088         if [ -z "${PLAIN_ROOT}" ]
1089         then
1090                 # Read image names from ${MODULE}.module if it exists
1091                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1092                 then
1093                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1094                         do
1095                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1096                         done
1097                 elif [ -e "${image_directory}/${MODULE}.module" ]
1098                 then
1099                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1100                         do
1101                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1102                         done
1103                 else
1104                         # ${MODULE}.module does not exist, create a list of images
1105                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1106                         do
1107                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1108                                 do
1109                                         if [ -e "${IMAGE}" ]
1110                                         then
1111                                                 image_string="${image_string} ${IMAGE}"
1112                                         fi
1113                                 done
1114                         done
1115
1116                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1117                         then
1118                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1119                                 do
1120                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1121                                         do
1122                                                 if [ -e "${IMAGE}" ]
1123                                                 then
1124                                                         image_string="${image_string} ${IMAGE}"
1125                                                 fi
1126                                         done
1127                                 done
1128                         fi
1129
1130                         # Now sort the list
1131                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1132                 fi
1133
1134         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1135
1136                 mkdir -p "${croot}"
1137
1138                 for image in ${image_string}
1139                 do
1140                         imagename=$(basename "${image}")
1141
1142                         export image devname
1143                         maybe_break live-realpremount
1144                         log_begin_msg "Running /scripts/live-realpremount"
1145                         run_scripts /scripts/live-realpremount
1146                         log_end_msg
1147
1148                         if [ -d "${image}" ]
1149                         then
1150                                 # it is a plain directory: do nothing
1151                                 rofsstring="${image}=${roopt}:${rofsstring}"
1152                                 rofslist="${image} ${rofslist}"
1153                         elif [ -f "${image}" ]
1154                         then
1155                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1156                                 then
1157                                         backdev=$(get_backing_device "${image}" "-r")
1158                                 else
1159                                         backdev=$(get_backing_device "${image}")
1160                                 fi
1161                                 fstype=$(get_fstype "${backdev}")
1162
1163                                 if [ "${fstype}" = "unknown" ]
1164                                 then
1165                                         panic "Unknown file system type on ${backdev} (${image})"
1166                                 fi
1167
1168                                 if [ -z "${fstype}" ]
1169                                 then
1170                                         fstype="${imagename##*.}"
1171                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1172                                 fi
1173
1174                                 mkdir -p "${croot}/${imagename}"
1175                                 log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1176                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1177                                 log_end_msg
1178                         fi
1179                 done
1180         else
1181                 # we have a plain root system
1182                 mkdir -p "${croot}/filesystem"
1183                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1184                 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}"
1185                 # probably broken:
1186                 mount -o bind ${croot}/filesystem $mountpoint
1187                 log_end_msg
1188         fi
1189
1190         rofsstring=${rofsstring%:}
1191
1192         mkdir -p /cow
1193
1194         # Looking for "${root_persistence}" device or file
1195         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1196         then
1197                 # Load USB modules
1198                 num_block=$(ls -l /sys/block | wc -l)
1199                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1200                 do
1201                         modprobe -q -b ${module}
1202                 done
1203
1204                 if [ -x /sbin/udevadm ]
1205                 then
1206                         # lenny
1207                         udevadm trigger
1208                         udevadm settle
1209                 else
1210                         # etch
1211                         udevtrigger
1212                         udevsettle
1213                 fi
1214
1215                 # For some reason, udevsettle does not block in this scenario,
1216                 # so we sleep for a little while.
1217                 #
1218                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1219                 for timeout in 5 4 3 2 1
1220                 do
1221                         sleep 1
1222
1223                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1224                         then
1225                                 break
1226                         fi
1227                 done
1228
1229                 # search for label and files (this could be hugely optimized)
1230                 cowprobe=$(find_cow_device "${root_persistence}")
1231                 if [ -b "${cowprobe}" ]
1232                 then
1233                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1234                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1235                         # snapshots to be sure to really store some e.g key config files,
1236                         # but not on the same media
1237                         blacklistdev="${cowprobe}"
1238                         PERSISTENCE_IS_ON="1"
1239                         export PERSISTENCE_IS_ON
1240                 fi
1241                 # homecow just mount something on /home, this should be generalized some way
1242                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1243                 if [ -b "${homecow}" ]
1244                 then
1245                         PERSISTENCE_IS_ON="1"
1246                         export PERSISTENCE_IS_ON
1247                 fi
1248                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1249                 # This second type should be removed when snapshot will get smarter,
1250                 # hence when "/etc/live-snapshot*list" will be supported also by
1251                 # ext2|ext3|ext4|jffs2 snapshot types.
1252                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1253
1254                 if [ -b "${cowprobe}" ]
1255                 then
1256                         cowdevice=${cowprobe}
1257                         cow_fstype=$(get_fstype "${cowprobe}")
1258                         cow_mountopt="rw,noatime"
1259
1260                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1261                         then
1262                                 fsck -y ${cowdevice}
1263                         fi
1264                 else
1265                         log_warning_msg "Unable to find the persistent medium"
1266                         cowdevice="tmpfs"
1267                         cow_fstype="tmpfs"
1268                         cow_mountopt="rw,noatime,mode=755"
1269                 fi
1270         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1271         then
1272                 # check if there are any nfs options
1273                 if echo ${NFS_COW}|grep -q ','
1274                 then
1275                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1276                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1277                 else
1278                         nfs_cow_opts="-o nolock"
1279                         nfs_cow=${NFS_COW}
1280                 fi
1281                 mac="$(get_mac)"
1282                 if [ -n "${mac}" ]
1283                 then
1284                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1285                         cow_fstype="nfs"
1286                 else
1287                         panic "unable to determine mac address"
1288                 fi
1289         else
1290                 cowdevice="tmpfs"
1291                 cow_fstype="tmpfs"
1292                 cow_mountopt="rw,noatime,mode=755"
1293         fi
1294
1295         if [ "${cow_fstype}" = "nfs" ]
1296         then
1297                 log_begin_msg \
1298                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1299                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1300                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1301         else
1302                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1303                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1304         fi
1305
1306         rofscount=$(echo ${rofslist} |wc -w)
1307
1308         if [ -n "${EXPOSED_ROOT}" ]
1309         then
1310                 if [ ${rofscount} -ne 1 ]
1311                 then
1312                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1313                 fi
1314                 exposedrootfs=${rofslist%% }
1315
1316                 mount --bind ${exposedrootfs} ${rootmnt} || \
1317                         panic "bind mount of ${exposedrootfs} failed"
1318
1319                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1320                 then
1321                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1322                 else
1323                         cow_dirs=''
1324                 fi
1325
1326                 for dir in ${cow_dirs}; do
1327                         mkdir -p /cow${dir}
1328                         mount -t ${UNIONTYPE} \
1329                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1330                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1331                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1332                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1333                 done
1334         else
1335                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1336                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1337                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1338         fi
1339
1340         # Correct the permissions of /:
1341         chmod 0755 "${rootmnt}"
1342
1343         # tmpfs file systems
1344         touch /etc/fstab
1345         mkdir -p "${rootmnt}/live"
1346         mount -t tmpfs tmpfs ${rootmnt}/live
1347
1348         # Adding other custom mounts
1349         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1350         then
1351                 # directly mount /home
1352                 # FIXME: add a custom mounts configurable system
1353
1354                 if [ -b "${homecow}" ]
1355                 then
1356                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1357                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1358                 else
1359                         log_warning_msg "Unable to find the persistent home medium"
1360                 fi
1361
1362                 # Look for other snapshots to copy in
1363                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1364                 # This second type should be removed when snapshot grow smarter
1365                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1366         fi
1367
1368         if [ -n "${SHOWMOUNTS}" ]
1369         then
1370                 for d in ${rofslist}
1371                 do
1372                         mkdir -p "${rootmnt}/live/${d##*/}"
1373
1374                         case d in
1375                                 *.dir)
1376                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1377                                         ;;
1378
1379                                 *)
1380                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1381                                         ;;
1382                         esac
1383                 done
1384         fi
1385
1386         # shows cow fs on /cow for use by live-snapshot
1387         mkdir -p "${rootmnt}/live/cow"
1388         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 ${rootmnt}/live/cow"
1389 }
1390
1391 check_dev ()
1392 {
1393         sysdev="${1}"
1394         devname="${2}"
1395         skip_uuid_check="${3}"
1396
1397         # support for fromiso=.../isofrom=....
1398         if [ -n "$FROMISO" ]
1399         then
1400                 mkdir /isofrom
1401                 ISO_DEVICE="$(echo $FROMISO | sed 's|\(/dev/[a-z]*[0-9]*\).*|\1|')"
1402                 mount "$ISO_DEVICE" /isofrom
1403                 ISO_NAME="$(echo $FROMISO | sed 's|/dev/[a-z]*[0-9]*/||')"
1404                 loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1405                 devname="${loopdevname}"
1406         fi
1407
1408         if [ -z "${devname}" ]
1409         then
1410                 devname=$(sys2dev "${sysdev}")
1411         fi
1412
1413         if [ -d "${devname}" ]
1414         then
1415                 mount -o bind "${devname}" $mountpoint || continue
1416
1417                 if is_live_path $mountpoint
1418                 then
1419                         echo $mountpoint
1420                         return 0
1421                 else
1422                         umount $mountpoint
1423                 fi
1424         fi
1425
1426         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1427         then
1428                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1429                 devname="${loopdevname}"
1430         fi
1431
1432         fstype=$(get_fstype "${devname}")
1433
1434         if is_supported_fs ${fstype}
1435         then
1436                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1437
1438                 if is_live_path ${mountpoint} && \
1439                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1440                 then
1441                         echo ${mountpoint}
1442                         return 0
1443                 else
1444                         umount ${mountpoint}
1445                 fi
1446         fi
1447
1448         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1449         then
1450                 losetup -d "${loopdevname}"
1451         fi
1452
1453         return 1
1454 }
1455
1456 find_livefs ()
1457 {
1458         timeout="${1}"
1459
1460         # don't start autodetection before timeout has expired
1461         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1462         then
1463                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1464                 then
1465                         return 1
1466                 fi
1467         fi
1468
1469         # first look at the one specified in the command line
1470         case "${LIVE_MEDIA}" in
1471                 removable-usb)
1472                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1473                         do
1474                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1475                                 then
1476                                         if readlink ${sysblock} | grep -q usb ||
1477                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1478                                         then
1479                                                 for dev in $(subdevices "${sysblock}")
1480                                                 do
1481                                                         if check_dev "${dev}"
1482                                                         then
1483                                                                 return 0
1484                                                         fi
1485                                                 done
1486                                         fi
1487                                 fi
1488                         done
1489                         ;;
1490
1491                 removable)
1492                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1493                         do
1494                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1495                                 then
1496                                         for dev in $(subdevices "${sysblock}")
1497                                         do
1498                                                 if check_dev "${dev}"
1499                                                 then
1500                                                         return 0
1501                                                 fi
1502                                         done
1503                                 fi
1504                         done
1505                         ;;
1506
1507                 *)
1508                         if [ ! -z "${LIVE_MEDIA}" ]
1509                         then
1510                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1511                                 then
1512                                         return 0
1513                                 fi
1514                         fi
1515                         ;;
1516         esac
1517
1518         # or do the scan of block devices
1519         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1520         do
1521                 devname=$(sys2dev "${sysblock}")
1522                 fstype=$(get_fstype "${devname}")
1523
1524                 if /lib/udev/cdrom_id ${devname} > /dev/null
1525                 then
1526                         if check_dev "null" "${devname}"
1527                         then
1528                                 return 0
1529                         fi
1530                 elif is_nice_device "${sysblock}"
1531                 then
1532                         for dev in $(subdevices "${sysblock}")
1533                         do
1534                                 if check_dev "${dev}"
1535                                 then
1536                                         return 0
1537                                 fi
1538                         done
1539                 elif [ "${fstype}" = "squashfs" -o \
1540                         "${fstype}" = "ext2" -o \
1541                         "${fstype}" = "ext3" -o \
1542                         "${fstype}" = "ext4" -o \
1543                         "${fstype}" = "jffs2" ]
1544                 then
1545                         # This is an ugly hack situation, the block device has
1546                         # an image directly on it.  It's hopefully
1547                         # live-initramfs, so take it and run with it.
1548                         ln -s "${devname}" "${devname}.${fstype}"
1549                         echo "${devname}.${fstype}"
1550                         return 0
1551                 fi
1552         done
1553
1554         return 1
1555 }
1556
1557 set_usplash_timeout ()
1558 {
1559         if [ -x /sbin/usplash_write ]
1560         then
1561                 /sbin/usplash_write "TIMEOUT 120"
1562         else if [ -x /sbin/splashy_update ] ; then
1563                 /sbin/splashy_update "TIMEOUT 120"
1564         fi ; fi
1565 }
1566
1567 integrity_check ()
1568 {
1569         media_mountpoint="${1}"
1570
1571         log_begin_msg "Checking media integrity"
1572
1573         cd ${media_mountpoint}
1574         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1575         RC="${?}"
1576
1577         log_end_msg
1578
1579         if [ "${RC}" -eq 0 ]
1580         then
1581                 log_success_msg "Everything ok, will reboot in 10 seconds."
1582                 sleep 10
1583                 cd /
1584                 umount ${media_mountpoint}
1585                 sync
1586                 echo u > /proc/sysrq-trigger
1587                 echo b > /proc/sysrq-trigger
1588         else
1589                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1590         fi
1591 }
1592
1593 mountroot ()
1594 {
1595         if [ -x /scripts/local-top/cryptroot ]; then
1596             /scripts/local-top/cryptroot
1597         fi
1598
1599         exec 6>&1
1600         exec 7>&2
1601         exec > live.log
1602         exec 2>&1
1603         tail -f live.log >&7 &
1604         tailpid="${!}"
1605
1606         # Ensure 'panic' function is overridden
1607         . /scripts/live-functions
1608
1609         Arguments
1610
1611         set_usplash_timeout
1612
1613         maybe_break live-premount
1614         log_begin_msg "Running /scripts/live-premount"
1615         run_scripts /scripts/live-premount
1616         log_end_msg
1617
1618         # Needed here too because some things (*cough* udev *cough*)
1619         # changes the timeout
1620
1621         set_usplash_timeout
1622
1623         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1624         then
1625                 if do_netmount
1626                 then
1627                         livefs_root="${mountpoint}"
1628                 else
1629                         panic "Unable to find a live file system on the network"
1630                 fi
1631         else
1632                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1633                 then
1634                         # Do a local boot from hd
1635                         livefs_root=${ROOT}
1636                 else
1637                         # Scan local devices for the image
1638                         i=0
1639                         while [ "$i" -lt 60 ]
1640                         do
1641                                 livefs_root=$(find_livefs ${i})
1642
1643                                 if [ -n "${livefs_root}" ]
1644                                 then
1645                                         break
1646                                 fi
1647
1648                                 sleep 1
1649                                 i="$(($i + 1))"
1650                         done
1651                 fi
1652         fi
1653
1654         if [ -z "${livefs_root}" ]
1655         then
1656                 panic "Unable to find a medium containing a live file system"
1657         fi
1658
1659         if [ "${INTEGRITY_CHECK}" ]
1660         then
1661                 integrity_check "${livefs_root}"
1662         fi
1663
1664         if [ "${TORAM}" ]
1665         then
1666                 live_dest="ram"
1667         elif [ "${TODISK}" ]
1668         then
1669                 live_dest="${TODISK}"
1670         fi
1671
1672         if [ "${live_dest}" ]
1673         then
1674                 log_begin_msg "Copying live media to ${live_dest}"
1675                 copy_live_to "${livefs_root}" "${live_dest}"
1676                 log_end_msg
1677         fi
1678
1679         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1680         # because the mountpoint is left behind in /proc/mounts, so let's get
1681         # rid of it when running from RAM
1682         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1683         then
1684           losetup -d /dev/loop0
1685           grep -q /isofrom /proc/mounts && umount /isofrom
1686         fi
1687
1688         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1689         then
1690                 setup_unionfs "${livefs_root}" "${rootmnt}"
1691         else
1692                 mac="$(get_mac)"
1693                 mac="$(echo ${mac} | sed 's/-//g')"
1694                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1695         fi
1696
1697         log_end_msg
1698
1699         maybe_break live-bottom
1700         log_begin_msg "Running /scripts/live-bottom\n"
1701
1702         run_scripts /scripts/live-bottom
1703         log_end_msg
1704
1705         exec 1>&6 6>&-
1706         exec 2>&7 7>&-
1707         kill ${tailpid}
1708         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1709 }