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 tried="/tmp/tried"
  24
  25 # Create /etc/mtab for debug purpose and future syncs
  26 if [ ! -d /etc ]
  27 then
  28         mkdir /etc/
  29 fi
  30
  31 if [ ! -f /etc/mtab ]
  32 then
  33         touch /etc/mtab
  34 fi
  35
  36 [ -f /etc/live.conf ] && . /etc/live.conf
  37 export USERNAME USERFULLNAME HOSTNAME
  38
  39 . /scripts/live-helpers
  40
  41 if [ ! -f /live.vars ]
  42 then
  43         touch /live.vars
  44 fi
  45
  46 Arguments ()
  47 {
  48         PRESEEDS=""
  49         LOCATIONS=""
  50
  51         for ARGUMENT in $(cat /proc/cmdline)
  52         do
  53                 case "${ARGUMENT}" in
  54                         skipconfig)
  55                                 NOACCESSIBILITY="Yes"
  56                                 NOAPTCDROM="Yes"
  57                                 NOAUTOLOGIN="Yes"
  58                                 NOCONSOLEKEYBOARD="Yes"
  59                                 NOFASTBOOT="Yes"
  60                                 NOFSTAB="Yes"
  61                                 NOHOSTS="Yes"
  62                                 NONETWORKING="Yes"
  63                                 NOTIMEZONE="Yes"
  64                                 NOXAUTOCONFIG="Yes"
  65                                 NOXAUTOLOGIN="Yes"
  66
  67                                 export NOACCESSIBILITY NOAPTCDROM NOAUTOLOGIN NOCONSOLEKEYBOARD NOFASTBOOT NOFSTAB NOHOSTS NONETWORKING NOTIMEZONE NOXAUTOCONFIG NOXAUTOLOGIN
  68                                 ;;
  69
  70                         access=*)
  71                                 ACCESS="${ARGUMENT#access=}"
  72                                 export ACCESS
  73                                 ;;
  74
  75                         console=*)
  76                                 DEFCONSOLE="${ARGUMENT#*=}"
  77                                 export DEFCONSOLE
  78                                 ;;
  79
  80                         debug)
  81                                 DEBUG="Yes"
  82                                 export DEBUG
  83
  84                                 set -x
  85                                 ;;
  86
  87                         ethdevice=*)
  88                                 DEVICE="${ARGUMENT#ethdevice=}"
  89                                 export DEVICE
  90                                 ;;
  91
  92                         ethdevice=*)
  93                                 ETHDEVICE="${ARGUMENT#ethdevice=}"
  94                                 export ETHDEVICE
  95                                 ;;
  96
  97                         ethdevice-timeout=*)
  98                                 ETHDEV_TIMEOUT="${ARGUMENT#ethdevice-timeout=}"
  99                                 export ETHDEV_TIMEOUT
 100                                 ;;
 101
 102                         fetch=*)
 103                                 FETCH="${ARGUMENT#fetch=}"
 104                                 export FETCH
 105                                 ;;
 106
 107                         forcepersistentfsck)
 108                                 FORCEPERSISTENTFSCK="Yes"
 109                                 export FORCEPERSISTENTFSCK
 110                                 ;;
 111
 112                         ftpfs=*)
 113                                 FTPFS="${ARGUMENT#ftpfs=}"
 114                                 export FTPFS
 115                                 ;;
 116
 117                         httpfs=*)
 118                                 HTTPFS="${ARGUMENT#httpfs=}"
 119                                 export HTTPFS
 120                                 ;;
 121
 122                         isofrom=*|fromiso=*)
 123                                 FROMISO="${ARGUMENT#*=}"
 124                                 export FROMISO
 125                                 ;;
 126
 127                         username=*)
 128                                 USERNAME="${ARGUMENT#username=}"
 129                                 LIVECONF="changed"
 130                                 export USERNAME LIVECONF
 131                                 ;;
 132
 133                         userfullname=*)
 134                                 USERFULLNAME="${ARGUMENT#userfullname=}"
 135                                 LIVECONF="changed"
 136                                 export USERFULLNAME LIVECONF
 137                                 ;;
 138
 139                         ignore_uuid)
 140                                 IGNORE_UUID="Yes"
 141                                 export IGNORE_UUID
 142                                 ;;
 143
 144                         integrity-check)
 145                                 INTEGRITY_CHECK="Yes"
 146                                 export INTEGRITY_CHECK
 147                                 ;;
 148
 149                         ip=*)
 150                                 STATICIP="${ARGUMENT#ip=}"
 151
 152                                 if [ -z "${STATICIP}" ]
 153                                 then
 154                                         STATICIP="frommedia"
 155                                 fi
 156
 157                                 export STATICIP
 158                                 ;;
 159
 160                         keyb=*|kbd-chooser/method=*)
 161                                 KBD="${ARGUMENT#*=}"
 162                                 export KBD
 163                                 ;;
 164
 165                         klayout=*|console-setup/layoutcode=*)
 166                                 KLAYOUT="${ARGUMENT#*=}"
 167                                 export KLAYOUT
 168                                 ;;
 169
 170                         kvariant=*|console-setup/variantcode=*)
 171                                 KVARIANT="${ARGUMENT#*=}"
 172                                 export KVARIANT
 173                                 ;;
 174
 175                         kmodel=*|console-setup/modelcode=*)
 176                                 KMODEL="${ARGUMENT#*=}"
 177                                 export KMODEL
 178                                 ;;
 179
 180                         koptions=*)
 181                                 KOPTIONS="${ARGUMENT#koptions=}"
 182                                 export KOPTIONS
 183                                 ;;
 184
 185                         live-getty)
 186                                 LIVE_GETTY="1"
 187                                 export LIVE_GETTY
 188                                 ;;
 189
 190                         live-media=*|bootfrom=*)
 191                                 LIVE_MEDIA="${ARGUMENT#*=}"
 192                                 export LIVE_MEDIA
 193                                 ;;
 194
 195                         live-media-encryption=*|encryption=*)
 196                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 197                                 export LIVE_MEDIA_ENCRYPTION
 198                                 ;;
 199
 200                         live-media-offset=*)
 201                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 202                                 export LIVE_MEDIA_OFFSET
 203                                 ;;
 204
 205                         live-media-path=*)
 206                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 207                                 export LIVE_MEDIA_PATH
 208                                 ;;
 209
 210                         live-media-timeout=*)
 211                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 212                                 export LIVE_MEDIA_TIMEOUT
 213                                 ;;
 214
 215                         module=*)
 216                                 MODULE="${ARGUMENT#module=}"
 217                                 export MODULE
 218                                 ;;
 219
 220                         netboot=*)
 221                                 NETBOOT="${ARGUMENT#netboot=}"
 222                                 export NETBOOT
 223                                 ;;
 224
 225                         nfsopts=*)
 226                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 227                                 export NFSOPTS
 228                                 ;;
 229
 230                         nfscow=*)
 231                                 NFS_COW="${ARGUMENT#nfscow=}"
 232                                 export NFS_COW
 233                                 ;;
 234
 235                         noaccessibility)
 236                                 NOACCESSIBILITY="Yes"
 237                                 export NOACCESSIBILITY
 238                                 ;;
 239
 240                         noaptcdrom)
 241                                 NOAPTCDROM="Yes"
 242                                 export NOAPTCDROM
 243                                 ;;
 244
 245                         noautologin)
 246                                 NOAUTOLOGIN="Yes"
 247                                 export NOAUTOLOGIN
 248                                 ;;
 249
 250                         noxautologin)
 251                                 NOXAUTOLOGIN="Yes"
 252                                 export NOXAUTOLOGIN
 253                                 ;;
 254
 255                         noconsolekeyboard)
 256                                 NOCONSOLEKEYBOARD="Yes"
 257                                 export NOCONSOLEKEYBOARD
 258                                 ;;
 259
 260                         nofastboot)
 261                                 NOFASTBOOT="Yes"
 262                                 export NOFASTBOOT
 263                                 ;;
 264
 265                         nofstab)
 266                                 NOFSTAB="Yes"
 267                                 export NOFSTAB
 268                                 ;;
 269
 270                         nohosts)
 271                                 NOHOSTS="Yes"
 272                                 export NOHOSTS
 273                                 ;;
 274
 275                         nonetworking)
 276                                 NONETWORKING="Yes"
 277                                 export NONETWORKING
 278                                 ;;
 279
 280                         swapon)
 281                                 SWAPON="Yes"
 282                                 export SWAPON
 283                                 ;;
 284
 285                         noxautoconfig)
 286                                 NOXAUTOCONFIG="Yes"
 287                                 export NOXAUTOCONFIG
 288                                 ;;
 289
 290                         noxscreensaver)
 291                                 NOXSCREENSAVER="Yes"
 292                                 export NOXSCREENSAVER
 293                                 ;;
 294
 295                         persistent)
 296                                 PERSISTENT="Yes"
 297                                 export PERSISTENT
 298                                 ;;
 299
 300                         persistent=*)
 301                                 PERSISTENT="${ARGUMENT#persistent=}"
 302                                 if [ -z "${PERSISTENT}" ]
 303                                 then
 304                                         PERSISTENT="Yes"
 305                                 fi
 306                                 export PERSISTENT
 307                                 ;;
 308
 309                         persistent-path=*)
 310                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 311                                 export PERSISTENT_PATH
 312                                 ;;
 313
 314                         persistent-subtext=*)
 315                                 root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
 316                                 home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
 317                                 root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 318                                 home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 319                                 ;;
 320
 321                         nopersistent)
 322                                 NOPERSISTENT="Yes"
 323                                 export NOPERSISTENT
 324                                 ;;
 325
 326                         quickusbmodules)
 327                                 QUICKUSBMODULES="Yes"
 328                                 export QUICKUSBMODULES
 329                                 ;;
 330
 331                         preseed/file=*|file=*)
 332                                 LOCATIONS="${ARGUMENT#*=} ${LOCATIONS}"
 333                                 export LOCATIONS
 334                                 ;;
 335
 336                         nopreseed)
 337                                 NOPRESEED="Yes"
 338                                 export NOPRESEED
 339                                 ;;
 340
 341                         url=*)
 342                                 URL_LOCATION="${ARGUMENT#url=}"
 343
 344                                 mount -o bind /sys /root/sys
 345                                 mount -o bind /proc /root/proc
 346                                 mount -o bind /dev /root/dev
 347
 348                                 mkdir -p /root/var/run/network
 349                                 [ "${NETBOOT}" ] || chroot /root dhclient eth0
 350                                 chroot /root wget -P /tmp "${URL_LOCATION}"
 351                                 [ "${NETBOOT}" ] || chroot /root ifconfig eth0 down
 352
 353                                 umount /root/sys
 354                                 umount /root/proc
 355                                 umount /root/dev
 356
 357                                 LOCATIONS="/tmp/$(basename ${URL_LOCATION}) ${LOCATIONS}"
 358                                 ;;
 359
 360                         */*=*)
 361                                 question="${ARGUMENT%%=*}"
 362                                 value="${ARGUMENT#*=}"
 363                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 364                                 export PRESEEDS
 365                                 ;;
 366
 367                         showmounts)
 368                                 SHOWMOUNTS="Yes"
 369                                 export SHOWMOUNTS
 370                                 ;;
 371
 372                         silent)
 373                                 SILENT="Yes"
 374                                 export SILENT
 375                                 ;;
 376
 377                         textonly)
 378                                 TEXTONLY="Yes"
 379                                 export TEXTONLY
 380                                 ;;
 381
 382                         timezone=*)
 383                                 TIMEZONE="${ARGUMENT#timezone=}"
 384                                 export TIMEZONE
 385                                 ;;
 386
 387                         notimezone)
 388                                 NOTIMEZONE="Yes"
 389                                 export NOTIMEZONE
 390                                 ;;
 391
 392                         todisk=*)
 393                                 TODISK="${ARGUMENT#todisk=}"
 394                                 export TODISK
 395                                 ;;
 396
 397                         toram)
 398                                 TORAM="Yes"
 399                                 export TORAM
 400                                 ;;
 401
 402                         toram=*)
 403                                 TORAM="Yes"
 404                                 MODULETORAM="${ARGUMENT#toram=}"
 405                                 export TORAM MODULETORAM
 406                                 ;;
 407
 408                         exposedroot)
 409                                 EXPOSED_ROOT="Yes"
 410                                 export EXPOSED_ROOT
 411                                 ;;
 412
 413                         plainroot)
 414                                 PLAIN_ROOT="Yes"
 415                                 export PLAIN_ROOT
 416                                 ;;
 417
 418                         skipunion)
 419                                 SKIP_UNION_MOUNTS="Yes"
 420                                 export SKIP_UNION_MOUNTS
 421                                 ;;
 422
 423                         root=*)
 424                                 ROOT="${ARGUMENT#root=}"
 425                                 export ROOT
 426                                 ;;
 427
 428                         union=*)
 429                                 UNIONTYPE="${ARGUMENT#union=}"
 430                                 export UNIONTYPE
 431                                 ;;
 432
 433                         xdebconf)
 434                                 XDEBCONF="Yes"
 435                                 export XDEBCONF
 436                                 ;;
 437
 438                         xdriver=*)
 439                                 XDRIVER="${ARGUMENT#xdriver=}"
 440                                 export XDRIVER
 441                                 ;;
 442
 443                         xvideomode=*)
 444                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 445                                 export XVIDEOMODE
 446                                 ;;
 447                 esac
 448         done
 449
 450         # sort of compatibility with netboot.h from linux docs
 451         if [ -z "${NETBOOT}" ]
 452         then
 453                 if [ "${ROOT}" = "/dev/nfs" ]
 454                 then
 455                         NETBOOT="nfs"
 456                         export NETBOOT
 457                 elif [ "${ROOT}" = "/dev/cifs" ]
 458                 then
 459                         NETBOOT="cifs"
 460                         export NETBOOT
 461                 fi
 462         fi
 463
 464         if [ -z "${MODULE}" ]
 465         then
 466                 MODULE="filesystem"
 467                 export MODULE
 468         fi
 469
 470         if [ -z "${UNIONTYPE}" ]
 471         then
 472                 UNIONTYPE="aufs"
 473                 export UNIONTYPE
 474         fi
 475 }
 476
 477 is_live_path ()
 478 {
 479         DIRECTORY="${1}"
 480
 481         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 482         then
 483                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 484                 do
 485                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 486                         then
 487                                 return 0
 488                         fi
 489                 done
 490         fi
 491
 492         return 1
 493 }
 494
 495 matches_uuid ()
 496 {
 497         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 498         then
 499                 return 0
 500         fi
 501
 502         path="${1}"
 503         uuid="$(cat /conf/uuid.conf)"
 504
 505         for try_uuid_file in "${path}/.disk/live-uuid"*
 506         do
 507                 [ -e "${try_uuid_file}" ] || continue
 508
 509                 try_uuid="$(cat "${try_uuid_file}")"
 510
 511                 if [ "${uuid}" = "${try_uuid}" ]
 512                 then
 513                         return 0
 514                 fi
 515         done
 516
 517         return 1
 518 }
 519
 520 get_backing_device ()
 521 {
 522         case "${1}" in
 523                 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 524                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 525                         ;;
 526
 527                 *.dir)
 528                         echo "directory"
 529                         ;;
 530
 531                 *)
 532                         panic "Unrecognized live filesystem: ${1}"
 533                         ;;
 534         esac
 535 }
 536
 537 match_files_in_dir ()
 538 {
 539         # Does any files match pattern ${1} ?
 540         local pattern="${1}"
 541
 542         if [ "$(echo ${pattern})" != "${pattern}" ]
 543         then
 544                 return 0
 545         fi
 546
 547         return 1
 548 }
 549
 550 mount_images_in_directory ()
 551 {
 552         directory="${1}"
 553         rootmnt="${2}"
 554         mac="${3}"
 555
 556
 557         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 558                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 559                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 560                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 561                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 562                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 563         then
 564                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 565                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 566         else
 567                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 568         fi
 569 }
 570
 571 is_nice_device ()
 572 {
 573         sysfs_path="${1#/sys}"
 574
 575         if /lib/udev/path_id "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-|platform-orion-ehci|platform-mmc|platform-mxsdhci|)"
 576         then
 577                 return 0
 578         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 579         then
 580                 return 0
 581         elif echo ${sysfs_path} | grep -q "^/block/dm-"
 582         then
 583                 return 0
 584         fi
 585
 586         return 1
 587 }
 588
 589 copy_live_to ()
 590 {
 591         copyfrom="${1}"
 592         copytodev="${2}"
 593         copyto="${copyfrom}_swap"
 594
 595         if [ -z "${MODULETORAM}" ]
 596         then
 597                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 598         else
 599                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 600
 601                 if [ -f "${MODULETORAMFILE}" ]
 602                 then
 603                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 604                 else
 605                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 606                         return 1
 607                 fi
 608         fi
 609
 610         if [ "${copytodev}" = "ram" ]
 611         then
 612                 # copying to ram:
 613                 freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 614                 mount_options="-o size=${size}k"
 615                 free_string="memory"
 616                 fstype="tmpfs"
 617                 dev="/dev/shm"
 618         else
 619                 # it should be a writable block device
 620                 if [ -b "${copytodev}" ]
 621                 then
 622                         dev="${copytodev}"
 623                         free_string="space"
 624                         fstype=$(get_fstype "${dev}")
 625                         freespace=$(fs_size "${dev}")
 626                 else
 627                         log_warning_msg "${copytodev} is not a block device."
 628                         return 1
 629                 fi
 630         fi
 631
 632         if [ "${freespace}" -lt "${size}" ]
 633         then
 634                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 635                 return 1
 636         fi
 637
 638         # begin copying (or uncompressing)
 639         mkdir "${copyto}"
 640         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 641         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 642
 643         if [ "${extension}" = "tgz" ]
 644         then
 645                 cd "${copyto}"
 646                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 647                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 648                 mount -r -o move "${copyto}" "${rootmnt}"
 649                 cd "${OLDPWD}"
 650         else
 651                 if [ -n "${MODULETORAMFILE}" ]
 652                 then
 653                         if [ -x /bin/rsync ]
 654                         then
 655                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 656                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 657                         else
 658                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 659                         fi
 660                 else
 661                         if [ -x /bin/rsync ]
 662                         then
 663                                 echo " * Copying whole medium to RAM" 1>/dev/console
 664                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 665                         else
 666                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 667                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
 668                                 if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
 669                                 then
 670                                         cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
 671                                 fi
 672                         fi
 673                 fi
 674
 675                 umount ${copyfrom}
 676                 mount -r -o move ${copyto} ${copyfrom}
 677         fi
 678
 679         rmdir ${copyto}
 680         return 0
 681 }
 682
 683 do_netmount ()
 684 {
 685         rc=1
 686
 687         modprobe -q af_packet # For DHCP
 688
 689         udevadm trigger
 690         udevadm settle
 691
 692         if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && \
 693            [ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
 694         then
 695
 696         # if ethdevice was not specified on the kernel command line
 697         # make sure we try to get a working network configuration
 698         # for *every* present network device (except for loopback of course)
 699         if [ -z "$ETHDEVICE" ] ; then
 700                 echo "If you want to boot from a specific device use bootoption ethdevice=..."
 701                 for device in /sys/class/net/*; do
 702                         dev=${device##*/} ;
 703                         if [ "$dev" != "lo" ] ; then
 704                                 ETHDEVICE="$ETHDEVICE $dev"
 705                         fi
 706                 done
 707         fi
 708
 709         # split args of ethdevice=eth0,eth1 into "eth0 eth1"
 710         for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
 711                 devlist="$devlist $device"
 712         done
 713
 714         [ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
 715         echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
 716
 717         # this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
 718         # an endless loop; iff execution fails give it two further tries, that's
 719         # why we use '$devlist $devlist $devlist' for the other for loop
 720         for dev in $devlist $devlist $devlist ; do
 721                 echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
 722                 ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
 723                 jobid=$!
 724                 sleep "$ETHDEV_TIMEOUT" ; sleep 1
 725                 if [ -r /proc/"$jobid"/status ] ; then
 726                         echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
 727                         kill -9 $jobid
 728                 fi
 729
 730                 # if configuration of device worked we should have an assigned
 731                 # IP address, iff so let's use the according as $DEVICE for later usage
 732                 # simple and primitive approach which seems to work fine
 733                 if ifconfig $dev | grep -q 'inet.*addr:' ; then
 734                         export DEVICE="$dev"
 735                         break
 736                 fi
 737         done
 738
 739         else
 740         ipconfig ${DEVICE} | tee /netboot.config
 741         fi
 742
 743         # source relevant ipconfig output
 744         OLDHOSTNAME=${HOSTNAME}
 745         . /tmp/net-${DEVICE}.conf
 746         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 747         export HOSTNAME
 748
 749         # Check if we have a network device at all
 750         if ! ls /sys/class/net/"$DEVICE" > /dev/null 2>&1 && \
 751            ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 752            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 753            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 754            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 755         then
 756                 panic "No supported network device found, maybe a non-mainline driver is required."
 757         fi
 758
 759         if [ "${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 $4}')
 919                 else
 920                         freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 921                 fi
 922
 923                 tomount="/mnt/tmpsnap"
 924
 925                 if [ ! -d "${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 "${PERSISTENT_PATH}${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")
 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 ${snap_mount}
 978         # and remember the device and filename for resync on exit in live-boot.init
 979
 980         snapdata="${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=$?
1004                 else
1005                         # cpio.gz snapshot
1006
1007                         # Unfortunately klibc's cpio is incompatible with the
1008                         # rest of the world; everything else requires -u -d,
1009                         # while klibc doesn't implement them. Try to detect
1010                         # whether it's in use.
1011                         cpiopath="$(which cpio)" || true
1012                         if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
1013                         then
1014                                 cpioargs=
1015                         else
1016                                 cpioargs='--unconditional --make-directories'
1017                         fi
1018
1019                         if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null)
1020                         then
1021                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | cpio $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
1022                         fi
1023                 fi
1024
1025                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1026
1027                 if [ "${RES}" != "0" ]
1028                 then
1029                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1030                 fi
1031
1032         elif [ -b "${snapdata}" ]
1033         then
1034                 # Try to find if it could be a snapshot partition
1035                 dev="${snapdata}"
1036                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1037                 if echo "${dev}" | grep -qs loop
1038                 then
1039                         # strange things happens, user confused?
1040                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1041                         snapfile=$(basename ${snaploop})
1042                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1043                 else
1044                         snapdev="${dev}"
1045                 fi
1046
1047                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1048                 then
1049                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1050                         return 1
1051                 else
1052                         if [ -n "${snapfile}" ]
1053                         then
1054                                 # it was a loop device, user confused
1055                                 umount ${snapdev}
1056                         fi
1057                 fi
1058         else
1059                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1060                 return 1
1061         fi
1062
1063         echo "export ${snap_type}SNAP="/cow${snap_mount#$rootmnt}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1064         return 0
1065 }
1066
1067 setup_unionfs ()
1068 {
1069         image_directory="${1}"
1070         rootmnt="${2}"
1071         addimage_directory="${3}"
1072
1073         case ${UNIONTYPE} in
1074                 aufs|unionfs)
1075                         modprobe -q -b ${UNIONTYPE}
1076
1077                         if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
1078                         then
1079                                 echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
1080                                 echo "This might be really slow."
1081
1082                                 UNIONTYPE="unionfs-fuse"
1083                         fi
1084                         ;;
1085         esac
1086
1087         if [ "${UNIONTYPE}" = unionfs-fuse ]
1088         then
1089                 modprobe fuse
1090         fi
1091
1092         # run-init can't deal with images in a subdir, but we're going to
1093         # move all of these away before it runs anyway.  No, we're not,
1094         # put them in / since move-mounting them into / breaks mono and
1095         # some other apps.
1096
1097         croot="/"
1098
1099         # Let's just mount the read-only file systems first
1100         rofsstring=""
1101         rofslist=""
1102
1103         if [ "${UNIONTYPE}" = "aufs" ]
1104         then
1105                 roopt="rr"
1106                 noxino_opt="noxino,"
1107         elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
1108         then
1109                 roopt="RO"
1110         else
1111                 roopt="ro"
1112         fi
1113
1114         if [ -z "${PLAIN_ROOT}" ]
1115         then
1116                 # Read image names from ${MODULE}.module if it exists
1117                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1118                 then
1119                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1120                         do
1121                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1122                         done
1123                 elif [ -e "${image_directory}/${MODULE}.module" ]
1124                 then
1125                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1126                         do
1127                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1128                         done
1129                 else
1130                         # ${MODULE}.module does not exist, create a list of images
1131                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1132                         do
1133                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1134                                 do
1135                                         if [ -e "${IMAGE}" ]
1136                                         then
1137                                                 image_string="${image_string} ${IMAGE}"
1138                                         fi
1139                                 done
1140                         done
1141
1142                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1143                         then
1144                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1145                                 do
1146                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1147                                         do
1148                                                 if [ -e "${IMAGE}" ]
1149                                                 then
1150                                                         image_string="${image_string} ${IMAGE}"
1151                                                 fi
1152                                         done
1153                                 done
1154                         fi
1155
1156                         # Now sort the list
1157                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1158                 fi
1159
1160         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1161
1162                 mkdir -p "${croot}"
1163
1164                 for image in ${image_string}
1165                 do
1166                         imagename=$(basename "${image}")
1167
1168                         export image devname
1169                         maybe_break live-realpremount
1170                         log_begin_msg "Running /scripts/live-realpremount"
1171                         run_scripts /scripts/live-realpremount
1172                         log_end_msg
1173
1174                         if [ -d "${image}" ]
1175                         then
1176                                 # it is a plain directory: do nothing
1177                                 rofsstring="${image}=${roopt}:${rofsstring}"
1178                                 rofslist="${image} ${rofslist}"
1179                         elif [ -f "${image}" ]
1180                         then
1181                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1182                                 then
1183                                         backdev=$(get_backing_device "${image}" "-r")
1184                                 else
1185                                         backdev=$(get_backing_device "${image}")
1186                                 fi
1187                                 fstype=$(get_fstype "${backdev}")
1188
1189                                 if [ "${fstype}" = "unknown" ]
1190                                 then
1191                                         panic "Unknown file system type on ${backdev} (${image})"
1192                                 fi
1193
1194                                 if [ -z "${fstype}" ]
1195                                 then
1196                                         fstype="${imagename##*.}"
1197                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1198                                 fi
1199
1200                                 mkdir -p "${croot}/${imagename}"
1201                                 log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1202                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1203                                 log_end_msg
1204                         fi
1205                 done
1206         else
1207                 # we have a plain root system
1208                 mkdir -p "${croot}/filesystem"
1209                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1210                 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}"
1211                 # probably broken:
1212                 mount -o bind ${croot}/filesystem $mountpoint
1213                 log_end_msg
1214         fi
1215
1216         rofsstring=${rofsstring%:}
1217
1218         mkdir -p /cow
1219
1220         # Looking for "${root_persistence}" device or file
1221         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1222         then
1223                 if [ -z "${QUICKUSBMODULES}" ]
1224                 then
1225                         # Load USB modules
1226                         num_block=$(ls -l /sys/block | wc -l)
1227                         for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1228                         do
1229                                 modprobe -q -b ${module}
1230                         done
1231
1232                         udevadm trigger
1233                         udevadm settle
1234
1235                         # For some reason, udevsettle does not block in this scenario,
1236                         # so we sleep for a little while.
1237                         #
1238                         # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1239                         for timeout in 5 4 3 2 1
1240                         do
1241                                 sleep 1
1242
1243                                 if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1244                                 then
1245                                         break
1246                                 fi
1247                         done
1248                 fi
1249
1250                 # search for label and files (this could be hugely optimized)
1251                 cowprobe=$(find_cow_device "${root_persistence}")
1252                 if [ -b "${cowprobe}" ]
1253                 then
1254                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1255                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1256                         # snapshots to be sure to really store some e.g key config files,
1257                         # but not on the same media
1258                         blacklistdev="${cowprobe}"
1259                         PERSISTENCE_IS_ON="1"
1260                         export PERSISTENCE_IS_ON
1261                 fi
1262                 # homecow just mount something on /home, this should be generalized some way
1263                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1264                 if [ -b "${homecow}" ]
1265                 then
1266                         PERSISTENCE_IS_ON="1"
1267                         export PERSISTENCE_IS_ON
1268                 fi
1269                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1270                 # This second type should be removed when snapshot will get smarter,
1271                 # hence when "/etc/live-snapshot*list" will be supported also by
1272                 # ext2|ext3|ext4|jffs2 snapshot types.
1273                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1274
1275                 if [ -b "${cowprobe}" ]
1276                 then
1277                         cowdevice=${cowprobe}
1278                         cow_fstype=$(get_fstype "${cowprobe}")
1279                         cow_mountopt="rw,noatime"
1280
1281                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1282                         then
1283                                 fsck -y ${cowdevice}
1284                         fi
1285                 else
1286                         log_warning_msg "Unable to find the persistent medium"
1287                         cowdevice="tmpfs"
1288                         cow_fstype="tmpfs"
1289                         cow_mountopt="rw,noatime,mode=755"
1290                 fi
1291         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1292         then
1293                 # check if there are any nfs options
1294                 if echo ${NFS_COW}|grep -q ','
1295                 then
1296                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1297                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1298                 else
1299                         nfs_cow_opts="-o nolock"
1300                         nfs_cow=${NFS_COW}
1301                 fi
1302                 mac="$(get_mac)"
1303                 if [ -n "${mac}" ]
1304                 then
1305                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1306                         cow_fstype="nfs"
1307                 else
1308                         panic "unable to determine mac address"
1309                 fi
1310         else
1311                 cowdevice="tmpfs"
1312                 cow_fstype="tmpfs"
1313                 cow_mountopt="rw,noatime,mode=755"
1314         fi
1315
1316         if [ "${cow_fstype}" = "nfs" ]
1317         then
1318                 log_begin_msg \
1319                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1320                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1321                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1322         else
1323                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1324                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1325         fi
1326
1327         rofscount=$(echo ${rofslist} |wc -w)
1328
1329         if [ -n "${EXPOSED_ROOT}" ]
1330         then
1331                 if [ ${rofscount} -ne 1 ]
1332                 then
1333                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1334                 fi
1335                 exposedrootfs=${rofslist%% }
1336
1337                 mount --bind ${exposedrootfs} ${rootmnt} || \
1338                         panic "bind mount of ${exposedrootfs} failed"
1339
1340                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1341                 then
1342                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1343                 else
1344                         cow_dirs=''
1345                 fi
1346
1347                 for dir in ${cow_dirs}; do
1348                         mkdir -p /cow${dir}
1349
1350                         case "${UNIONTYPE}" in
1351                                 unionfs-fuse)
1352                                         (ulimit -n 16384; unionfs-fuse -o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid /cow=RW:${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}")
1353                                         mkdir -p /dev/.initramfs/varrun
1354                                         pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1355                                         ;;
1356
1357                                 *)
1358                                         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}${dir}=ro"
1359                                         ;;
1360                         esac
1361                 done
1362         else
1363                 case "${UNIONTYPE}" in
1364                         unionfs-fuse)
1365                                 (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}")
1366                                 mkdir -p /dev/.initramfs/varrun
1367                                 pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1368                                 ;;
1369
1370                         *)
1371                                 mount -t ${UNIONTYPE} -o noatime,${noxino_opt}dirs=/cow=rw:${rofsstring} ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on ${rootmnt} failed with option noatime,${noxino_opt}dirs=/cow=rw:${rofsstring}"
1372                                 ;;
1373                 esac
1374         fi
1375
1376         # Correct the permissions of /:
1377         chmod 0755 "${rootmnt}"
1378
1379         # tmpfs file systems
1380         touch /etc/fstab
1381         mkdir -p "${rootmnt}/live"
1382         mount -t tmpfs tmpfs ${rootmnt}/live
1383
1384         # Adding other custom mounts
1385         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1386         then
1387                 # directly mount /home
1388                 # FIXME: add a custom mounts configurable system
1389
1390                 if [ -b "${homecow}" ]
1391                 then
1392                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1393                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1394                 else
1395                         log_warning_msg "Unable to find the persistent home medium"
1396                 fi
1397
1398                 # Look for other snapshots to copy in
1399                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1400                 # This second type should be removed when snapshot grow smarter
1401                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1402         fi
1403
1404         if [ -n "${SHOWMOUNTS}" ]
1405         then
1406                 for d in ${rofslist}
1407                 do
1408                         mkdir -p "${rootmnt}/live/${d##*/}"
1409
1410                         case d in
1411                                 *.dir)
1412                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1413                                         ;;
1414
1415                                 *)
1416                                         case "${UNIONTYPE}" in
1417                                                 unionfs-fuse)
1418                                                         mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1419                                                         ;;
1420
1421                                                 *)
1422                                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1423                                                         ;;
1424                                         esac
1425                                         ;;
1426                         esac
1427                 done
1428         fi
1429
1430         # shows cow fs on /cow for use by live-snapshot
1431         mkdir -p "${rootmnt}/live/cow"
1432         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 ${rootmnt}/live/cow"
1433 }
1434
1435 check_dev ()
1436 {
1437         sysdev="${1}"
1438         devname="${2}"
1439         skip_uuid_check="${3}"
1440
1441         # support for fromiso=.../isofrom=....
1442         if [ -n "$FROMISO" ]
1443         then
1444                 ISO_DEVICE=$(dirname $FROMISO)
1445                 if ! [ -b $ISO_DEVICE ]
1446                 then
1447                         # to support unusual device names like /dev/cciss/c0d0p1
1448                         # as well we have to identify the block device name, let's
1449                         # do that for up to 15 levels
1450                         i=15
1451                         while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
1452                         do
1453                                 ISO_DEVICE=$(dirname ${ISO_DEVICE})
1454                                 [ -b "$ISO_DEVICE" ] && break
1455                                 i=$(($i -1))
1456                         done
1457                 fi
1458
1459                 if [ "$ISO_DEVICE" = "/" ]
1460                 then
1461                         echo "Warning: device for bootoption isofrom= ($FROMISO) not found.">>/live.log
1462                 else
1463                         mkdir /isofrom
1464                         mount "$ISO_DEVICE" /isofrom
1465                         ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
1466                         loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1467                         devname="${loopdevname}"
1468                 fi
1469         fi
1470
1471         if [ -z "${devname}" ]
1472         then
1473                 devname=$(sys2dev "${sysdev}")
1474         fi
1475
1476         if [ -d "${devname}" ]
1477         then
1478                 mount -o bind "${devname}" $mountpoint || continue
1479
1480                 if is_live_path $mountpoint
1481                 then
1482                         echo $mountpoint
1483                         return 0
1484                 else
1485                         umount $mountpoint
1486                 fi
1487         fi
1488         [ -e "$devname" ] || continue
1489
1490         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1491         then
1492                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1493                 devname="${loopdevname}"
1494         fi
1495
1496         fstype=$(get_fstype "${devname}")
1497
1498         if is_supported_fs ${fstype}
1499         then
1500                 devuid=$(blkid -o value -s UUID "$devname")
1501                 [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
1502                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1503                 [ -n "$devuid" ] && echo "$devuid" >> $tried
1504
1505                 if is_live_path ${mountpoint} && \
1506                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1507                 then
1508                         echo ${mountpoint}
1509                         return 0
1510                 else
1511                         umount ${mountpoint}
1512                 fi
1513         fi
1514
1515         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1516         then
1517                 losetup -d "${loopdevname}"
1518         fi
1519
1520         return 1
1521 }
1522
1523 find_livefs ()
1524 {
1525         timeout="${1}"
1526
1527         # don't start autodetection before timeout has expired
1528         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1529         then
1530                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1531                 then
1532                         return 1
1533                 fi
1534         fi
1535
1536         # first look at the one specified in the command line
1537         case "${LIVE_MEDIA}" in
1538                 removable-usb)
1539                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1540                         do
1541                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1542                                 then
1543                                         if readlink ${sysblock} | grep -q usb ||
1544                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1545                                         then
1546                                                 for dev in $(subdevices "${sysblock}")
1547                                                 do
1548                                                         if check_dev "${dev}"
1549                                                         then
1550                                                                 return 0
1551                                                         fi
1552                                                 done
1553                                         fi
1554                                 fi
1555                         done
1556                         return 1
1557                         ;;
1558
1559                 removable)
1560                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1561                         do
1562                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1563                                 then
1564                                         for dev in $(subdevices "${sysblock}")
1565                                         do
1566                                                 if check_dev "${dev}"
1567                                                 then
1568                                                         return 0
1569                                                 fi
1570                                         done
1571                                 fi
1572                         done
1573                         return 1
1574                         ;;
1575
1576                 *)
1577                         if [ ! -z "${LIVE_MEDIA}" ]
1578                         then
1579                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1580                                 then
1581                                         return 0
1582                                 fi
1583                         fi
1584                         ;;
1585         esac
1586
1587         # or do the scan of block devices
1588         # prefer removable devices over non-removable devices, so scan them first
1589         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | egrep -v "/(loop|ram|dm-|fd)")
1590         do
1591                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1592                 then
1593                         removable_devices_to_scan="$removable_devices_to_scan $sysblock"
1594                 else
1595                         nonremovable_devices_to_scan="$nonremovable_devices_to_scan $sysblock"
1596                 fi
1597         done
1598         devices_to_scan="$removable_devices_to_scan $nonremovable_devices_to_scan"
1599
1600         for sysblock in $devices_to_scan
1601         do
1602                 devname=$(sys2dev "${sysblock}")
1603                 [ -e "$devname" ] || continue
1604                 fstype=$(get_fstype "${devname}")
1605
1606                 if /lib/udev/cdrom_id ${devname} > /dev/null
1607                 then
1608                         if check_dev "null" "${devname}"
1609                         then
1610                                 return 0
1611                         fi
1612                 elif is_nice_device "${sysblock}"
1613                 then
1614                         for dev in $(subdevices "${sysblock}")
1615                         do
1616                                 if check_dev "${dev}"
1617                                 then
1618                                         return 0
1619                                 fi
1620                         done
1621                 elif [ "${fstype}" = "squashfs" -o \
1622                         "${fstype}" = "ext2" -o \
1623                         "${fstype}" = "ext3" -o \
1624                         "${fstype}" = "ext4" -o \
1625                         "${fstype}" = "jffs2" ]
1626                 then
1627                         # This is an ugly hack situation, the block device has
1628                         # an image directly on it.  It's hopefully
1629                         # live-boot, so take it and run with it.
1630                         ln -s "${devname}" "${devname}.${fstype}"
1631                         echo "${devname}.${fstype}"
1632                         return 0
1633                 fi
1634         done
1635
1636         return 1
1637 }
1638
1639 set_usplash_timeout ()
1640 {
1641         if [ -x /sbin/usplash_write ]
1642         then
1643                 /sbin/usplash_write "TIMEOUT 120"
1644         else if [ -x /sbin/splashy_update ] ; then
1645                 /sbin/splashy_update "TIMEOUT 120"
1646         fi ; fi
1647 }
1648
1649 integrity_check ()
1650 {
1651         media_mountpoint="${1}"
1652
1653         log_begin_msg "Checking media integrity"
1654
1655         cd ${media_mountpoint}
1656         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1657         RC="${?}"
1658
1659         log_end_msg
1660
1661         if [ "${RC}" -eq 0 ]
1662         then
1663                 log_success_msg "Everything ok, will reboot in 10 seconds."
1664                 sleep 10
1665                 cd /
1666                 umount ${media_mountpoint}
1667                 sync
1668                 echo u > /proc/sysrq-trigger
1669                 echo b > /proc/sysrq-trigger
1670         else
1671                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1672         fi
1673 }
1674
1675 start_usplash_pulse ()
1676 {
1677         if [ -x /sbin/usplash_write ]
1678         then
1679                 /sbin/usplash_write "PULSELOGO"
1680         fi
1681 }
1682
1683 mountroot ()
1684 {
1685         if [ -x /scripts/local-top/cryptroot ]; then
1686             /scripts/local-top/cryptroot
1687         fi
1688
1689         exec 6>&1
1690         exec 7>&2
1691         exec > live.log
1692         exec 2>&1
1693         tail -f live.log >&7 &
1694         tailpid="${!}"
1695
1696         # Ensure 'panic' function is overridden
1697         . /scripts/live-functions
1698
1699         Arguments
1700
1701         set_usplash_timeout
1702         start_usplash_pulse
1703
1704         maybe_break live-premount
1705         log_begin_msg "Running /scripts/live-premount"
1706         run_scripts /scripts/live-premount
1707         log_end_msg
1708
1709         # Needed here too because some things (*cough* udev *cough*)
1710         # changes the timeout
1711
1712         set_usplash_timeout
1713
1714         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1715         then
1716                 if do_netmount
1717                 then
1718                         livefs_root="${mountpoint}"
1719                 else
1720                         panic "Unable to find a live file system on the network"
1721                 fi
1722         else
1723                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1724                 then
1725                         # Do a local boot from hd
1726                         livefs_root=${ROOT}
1727                 else
1728                         # Scan local devices for the image
1729                         i=0
1730                         while [ "$i" -lt 60 ]
1731                         do
1732                                 livefs_root=$(find_livefs ${i})
1733
1734                                 if [ -n "${livefs_root}" ]
1735                                 then
1736                                         break
1737                                 fi
1738
1739                                 sleep 1
1740                                 i="$(($i + 1))"
1741                         done
1742                 fi
1743         fi
1744
1745         if [ -z "${livefs_root}" ]
1746         then
1747                 panic "Unable to find a medium containing a live file system"
1748         fi
1749
1750         if [ "${INTEGRITY_CHECK}" ]
1751         then
1752                 integrity_check "${livefs_root}"
1753         fi
1754
1755         if [ "${TORAM}" ]
1756         then
1757                 live_dest="ram"
1758         elif [ "${TODISK}" ]
1759         then
1760                 live_dest="${TODISK}"
1761         fi
1762
1763         if [ "${live_dest}" ]
1764         then
1765                 log_begin_msg "Copying live media to ${live_dest}"
1766                 copy_live_to "${livefs_root}" "${live_dest}"
1767                 log_end_msg
1768         fi
1769
1770         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1771         # because the mountpoint is left behind in /proc/mounts, so let's get
1772         # rid of it when running from RAM
1773         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1774         then
1775           losetup -d /dev/loop0
1776           grep -q /isofrom /proc/mounts && umount /isofrom
1777         fi
1778
1779         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1780         then
1781                 setup_unionfs "${livefs_root}" "${rootmnt}"
1782         else
1783                 mac="$(get_mac)"
1784                 mac="$(echo ${mac} | sed 's/-//g')"
1785                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1786         fi
1787
1788         log_end_msg
1789
1790         # unionfs-fuse needs /dev to be bind-mounted for the duration of
1791         # live-bottom; udev's init script will take care of things after that
1792         if [ "${UNIONTYPE}" = unionfs-fuse ]
1793         then
1794                 mount -n -o bind /dev "${rootmnt}/dev"
1795         fi
1796
1797         # Move to the new root filesystem so that programs there can get at it.
1798         if [ ! -d /root/live/image ]
1799         then
1800                 mkdir -p /root/live/image
1801                 mount --move /live/image /root/live/image
1802         fi
1803
1804         maybe_break live-bottom
1805         log_begin_msg "Running /scripts/live-bottom\n"
1806
1807         run_scripts /scripts/live-bottom
1808         log_end_msg
1809
1810         if [ "${UNIONFS}" = unionfs-fuse ]
1811         then
1812                 umount "${rootmnt}/dev"
1813         fi
1814
1815         exec 1>&6 6>&-
1816         exec 2>&7 7>&-
1817         kill ${tailpid}
1818         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1819         if [ -f /etc/live.conf ]
1820         then
1821                 cp /etc/live.conf "${rootmnt}/etc/"
1822         fi
1823 }