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 alt_mountpoint="/media"
  12 LIVE_MEDIA_PATH="live"
  13
  14 root_persistence="live-rw"
  15 home_persistence="home-rw"
  16 root_snapshot_label="live-sn"
  17 home_snapshot_label="home-sn"
  18
  19 USERNAME="user"
  20 USERFULLNAME="Live user"
  21 HOSTNAME="host"
  22
  23 mkdir -p "${mountpoint}"
  24 tried="/tmp/tried"
  25
  26 # Create /etc/mtab for debug purpose and future syncs
  27 if [ ! -d /etc ]
  28 then
  29         mkdir /etc/
  30 fi
  31
  32 if [ ! -f /etc/mtab ]
  33 then
  34         touch /etc/mtab
  35 fi
  36
  37 . /scripts/live-helpers
  38
  39 if [ ! -f /live.vars ]
  40 then
  41         touch /live.vars
  42 fi
  43
  44 Arguments ()
  45 {
  46         PRESEEDS=""
  47         LOCATIONS=""
  48
  49         for ARGUMENT in $(cat /proc/cmdline)
  50         do
  51                 case "${ARGUMENT}" in
  52                         skipconfig)
  53                                 NOACCESSIBILITY="Yes"
  54                                 NOFASTBOOT="Yes"
  55                                 NOFSTAB="Yes"
  56                                 NONETWORKING="Yes"
  57
  58                                 export NOACCESSIBILITY NOFASTBOOT NOFSTAB NONETWORKING
  59                                 ;;
  60
  61                         access=*)
  62                                 ACCESS="${ARGUMENT#access=}"
  63                                 export ACCESS
  64                                 ;;
  65
  66                         console=*)
  67                                 DEFCONSOLE="${ARGUMENT#*=}"
  68                                 export DEFCONSOLE
  69                                 ;;
  70
  71                         debug)
  72                                 DEBUG="Yes"
  73                                 export DEBUG
  74
  75                                 set -x
  76                                 ;;
  77
  78                         dhcp)
  79                                 # Force dhcp even while netbooting
  80                                 # Use for debugging in case somebody works on fixing dhclient
  81                                 DHCP="Force";
  82                                 export DHCP
  83                                 ;;
  84
  85                         nodhcp)
  86                                 unset DHCP
  87                                 ;;
  88
  89                         ethdevice=*)
  90                                 DEVICE="${ARGUMENT#ethdevice=}"
  91                                 ETHDEVICE="${DEVICE}"
  92                                 export DEVICE ETHDEVICE
  93                                 ;;
  94
  95                         ethdevice-timeout=*)
  96                                 ETHDEV_TIMEOUT="${ARGUMENT#ethdevice-timeout=}"
  97                                 export ETHDEV_TIMEOUT
  98                                 ;;
  99
 100                         fetch=*)
 101                                 FETCH="${ARGUMENT#fetch=}"
 102                                 export FETCH
 103                                 ;;
 104
 105                         forcepersistentfsck)
 106                                 FORCEPERSISTENTFSCK="Yes"
 107                                 export FORCEPERSISTENTFSCK
 108                                 ;;
 109
 110                         ftpfs=*)
 111                                 FTPFS="${ARGUMENT#ftpfs=}"
 112                                 export FTPFS
 113                                 ;;
 114
 115                         httpfs=*)
 116                                 HTTPFS="${ARGUMENT#httpfs=}"
 117                                 export HTTPFS
 118                                 ;;
 119
 120                         iscsi=*)
 121                                 ISCSI="${ARGUMENT#iscsi=}"
 122                                 #ip:port - separated by ;
 123                                 ISCSI_PORTAL="${ISCSI%;*}"
 124                                 if echo "${ISCSI_PORTAL}" | grep -q , ; then
 125                                         ISCSI_SERVER="${ISCSI_PORTAL%,*}"
 126                                         ISCSI_PORT="${ISCSI_PORTAL#*,}"
 127                                 fi
 128                                 #target name
 129                                 ISCSI_TARGET="${ISCSI#*;}"
 130                                 export ISCSI ISCSI_PORTAL ISCSI_TARGET ISCSI_SERVER ISCSI_PORT
 131                                 ;;
 132
 133                         isofrom=*|fromiso=*)
 134                                 FROMISO="${ARGUMENT#*=}"
 135                                 export FROMISO
 136                                 ;;
 137
 138                         ignore_uuid)
 139                                 IGNORE_UUID="Yes"
 140                                 export IGNORE_UUID
 141                                 ;;
 142
 143                         integrity-check)
 144                                 INTEGRITY_CHECK="Yes"
 145                                 export INTEGRITY_CHECK
 146                                 ;;
 147
 148                         ip=*)
 149                                 STATICIP="${ARGUMENT#ip=}"
 150
 151                                 if [ -z "${STATICIP}" ]
 152                                 then
 153                                         STATICIP="frommedia"
 154                                 fi
 155
 156                                 export STATICIP
 157                                 ;;
 158
 159                         live-getty)
 160                                 LIVE_GETTY="1"
 161                                 export LIVE_GETTY
 162                                 ;;
 163
 164                         live-media=*|bootfrom=*)
 165                                 LIVE_MEDIA="${ARGUMENT#*=}"
 166                                 export LIVE_MEDIA
 167                                 ;;
 168
 169                         live-media-encryption=*|encryption=*)
 170                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 171                                 export LIVE_MEDIA_ENCRYPTION
 172                                 ;;
 173
 174                         live-media-offset=*)
 175                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 176                                 export LIVE_MEDIA_OFFSET
 177                                 ;;
 178
 179                         live-media-path=*)
 180                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 181                                 export LIVE_MEDIA_PATH
 182                                 ;;
 183
 184                         live-media-timeout=*)
 185                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 186                                 export LIVE_MEDIA_TIMEOUT
 187                                 ;;
 188
 189                         module=*)
 190                                 MODULE="${ARGUMENT#module=}"
 191                                 export MODULE
 192                                 ;;
 193
 194                         netboot=*)
 195                                 NETBOOT="${ARGUMENT#netboot=}"
 196                                 export NETBOOT
 197                                 ;;
 198
 199                         nfsopts=*)
 200                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 201                                 export NFSOPTS
 202                                 ;;
 203
 204                         nfscow=*)
 205                                 NFS_COW="${ARGUMENT#nfscow=}"
 206                                 export NFS_COW
 207                                 ;;
 208
 209                         noaccessibility)
 210                                 NOACCESSIBILITY="Yes"
 211                                 export NOACCESSIBILITY
 212                                 ;;
 213
 214                         nofastboot)
 215                                 NOFASTBOOT="Yes"
 216                                 export NOFASTBOOT
 217                                 ;;
 218
 219                         nofstab)
 220                                 NOFSTAB="Yes"
 221                                 export NOFSTAB
 222                                 ;;
 223
 224                         nonetworking)
 225                                 NONETWORKING="Yes"
 226                                 export NONETWORKING
 227                                 ;;
 228
 229                         swapon)
 230                                 SWAPON="Yes"
 231                                 export SWAPON
 232                                 ;;
 233
 234                         persistent)
 235                                 PERSISTENT="Yes"
 236                                 export PERSISTENT
 237                                 ;;
 238
 239                         persistent=*)
 240                                 PERSISTENT="${ARGUMENT#persistent=}"
 241                                 if [ -z "${PERSISTENT}" ]
 242                                 then
 243                                         PERSISTENT="Yes"
 244                                 fi
 245                                 export PERSISTENT
 246                                 ;;
 247
 248                         persistent-path=*)
 249                                 PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
 250                                 export PERSISTENT_PATH
 251                                 ;;
 252
 253                         persistent-subtext=*)
 254                                 root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
 255                                 home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
 256                                 root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 257                                 home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
 258                                 ;;
 259
 260                         nopersistent)
 261                                 NOPERSISTENT="Yes"
 262                                 export NOPERSISTENT
 263                                 ;;
 264
 265                         quickusbmodules)
 266                                 QUICKUSBMODULES="Yes"
 267                                 export QUICKUSBMODULES
 268                                 ;;
 269
 270                         preseed/file=*|file=*)
 271                                 LOCATIONS="${ARGUMENT#*=} ${LOCATIONS}"
 272                                 export LOCATIONS
 273                                 ;;
 274
 275                         nopreseed)
 276                                 NOPRESEED="Yes"
 277                                 export NOPRESEED
 278                                 ;;
 279
 280                         */*=*)
 281                                 question="${ARGUMENT%%=*}"
 282                                 value="${ARGUMENT#*=}"
 283                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 284                                 export PRESEEDS
 285                                 ;;
 286
 287                         showmounts)
 288                                 SHOWMOUNTS="Yes"
 289                                 export SHOWMOUNTS
 290                                 ;;
 291
 292                         silent)
 293                                 SILENT="Yes"
 294                                 export SILENT
 295                                 ;;
 296
 297                         todisk=*)
 298                                 TODISK="${ARGUMENT#todisk=}"
 299                                 export TODISK
 300                                 ;;
 301
 302                         toram)
 303                                 TORAM="Yes"
 304                                 export TORAM
 305                                 ;;
 306
 307                         toram=*)
 308                                 TORAM="Yes"
 309                                 MODULETORAM="${ARGUMENT#toram=}"
 310                                 export TORAM MODULETORAM
 311                                 ;;
 312
 313                         exposedroot)
 314                                 EXPOSED_ROOT="Yes"
 315                                 export EXPOSED_ROOT
 316                                 ;;
 317
 318                         plainroot)
 319                                 PLAIN_ROOT="Yes"
 320                                 export PLAIN_ROOT
 321                                 ;;
 322
 323                         skipunion)
 324                                 SKIP_UNION_MOUNTS="Yes"
 325                                 export SKIP_UNION_MOUNTS
 326                                 ;;
 327
 328                         root=*)
 329                                 ROOT="${ARGUMENT#root=}"
 330                                 export ROOT
 331                                 ;;
 332
 333                         union=*)
 334                                 UNIONTYPE="${ARGUMENT#union=}"
 335                                 export UNIONTYPE
 336                                 ;;
 337                 esac
 338         done
 339
 340         # sort of compatibility with netboot.h from linux docs
 341         if [ -z "${NETBOOT}" ]
 342         then
 343                 if [ "${ROOT}" = "/dev/nfs" ]
 344                 then
 345                         NETBOOT="nfs"
 346                         export NETBOOT
 347                 elif [ "${ROOT}" = "/dev/cifs" ]
 348                 then
 349                         NETBOOT="cifs"
 350                         export NETBOOT
 351                 fi
 352         fi
 353
 354         if [ -z "${MODULE}" ]
 355         then
 356                 MODULE="filesystem"
 357                 export MODULE
 358         fi
 359
 360         if [ -z "${UNIONTYPE}" ]
 361         then
 362                 UNIONTYPE="aufs"
 363                 export UNIONTYPE
 364         fi
 365 }
 366
 367 is_live_path ()
 368 {
 369         DIRECTORY="${1}"
 370
 371         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 372         then
 373                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 374                 do
 375                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 376                         then
 377                                 return 0
 378                         fi
 379                 done
 380         fi
 381
 382         return 1
 383 }
 384
 385 matches_uuid ()
 386 {
 387         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 388         then
 389                 return 0
 390         fi
 391
 392         path="${1}"
 393         uuid="$(cat /conf/uuid.conf)"
 394
 395         for try_uuid_file in "${path}/.disk/live-uuid"*
 396         do
 397                 [ -e "${try_uuid_file}" ] || continue
 398
 399                 try_uuid="$(cat "${try_uuid_file}")"
 400
 401                 if [ "${uuid}" = "${try_uuid}" ]
 402                 then
 403                         return 0
 404                 fi
 405         done
 406
 407         return 1
 408 }
 409
 410 get_backing_device ()
 411 {
 412         case "${1}" in
 413                 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 414                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 415                         ;;
 416
 417                 *.dir)
 418                         echo "directory"
 419                         ;;
 420
 421                 *)
 422                         panic "Unrecognized live filesystem: ${1}"
 423                         ;;
 424         esac
 425 }
 426
 427 match_files_in_dir ()
 428 {
 429         # Does any files match pattern ${1} ?
 430         local pattern="${1}"
 431
 432         if [ "$(echo ${pattern})" != "${pattern}" ]
 433         then
 434                 return 0
 435         fi
 436
 437         return 1
 438 }
 439
 440 mount_images_in_directory ()
 441 {
 442         directory="${1}"
 443         rootmnt="${2}"
 444         mac="${3}"
 445
 446
 447         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 448                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 449                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 450                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 451                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 452                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 453         then
 454                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 455                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 456         else
 457                 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
 458         fi
 459 }
 460
 461 is_nice_device ()
 462 {
 463         sysfs_path="${1#/sys}"
 464
 465         if /lib/udev/path_id "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-|platform-orion-ehci|platform-mmc|platform-mxsdhci|)"
 466         then
 467                 return 0
 468         elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
 469         then
 470                 return 0
 471         elif echo ${sysfs_path} | grep -q "^/block/dm-"
 472         then
 473                 return 0
 474         fi
 475
 476         return 1
 477 }
 478
 479 copy_live_to ()
 480 {
 481         copyfrom="${1}"
 482         copytodev="${2}"
 483         copyto="${copyfrom}_swap"
 484
 485         if [ -z "${MODULETORAM}" ]
 486         then
 487                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 488         else
 489                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 490
 491                 if [ -f "${MODULETORAMFILE}" ]
 492                 then
 493                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 494                 else
 495                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 496                         return 1
 497                 fi
 498         fi
 499
 500         if [ "${copytodev}" = "ram" ]
 501         then
 502                 # copying to ram:
 503                 freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 504                 mount_options="-o size=${size}k"
 505                 free_string="memory"
 506                 fstype="tmpfs"
 507                 dev="/dev/shm"
 508         else
 509                 # it should be a writable block device
 510                 if [ -b "${copytodev}" ]
 511                 then
 512                         dev="${copytodev}"
 513                         free_string="space"
 514                         fstype=$(get_fstype "${dev}")
 515                         freespace=$(fs_size "${dev}")
 516                 else
 517                         log_warning_msg "${copytodev} is not a block device."
 518                         return 1
 519                 fi
 520         fi
 521
 522         if [ "${freespace}" -lt "${size}" ]
 523         then
 524                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 525                 return 1
 526         fi
 527
 528         # begin copying (or uncompressing)
 529         mkdir "${copyto}"
 530         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 531         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 532
 533         if [ "${extension}" = "tgz" ]
 534         then
 535                 cd "${copyto}"
 536                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 537                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 538                 mount -r -o move "${copyto}" "${rootmnt}"
 539                 cd "${OLDPWD}"
 540         else
 541                 if [ -n "${MODULETORAMFILE}" ]
 542                 then
 543                         if [ -x /bin/rsync ]
 544                         then
 545                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 546                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 547                         else
 548                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 549                         fi
 550                 else
 551                         if [ -x /bin/rsync ]
 552                         then
 553                                 echo " * Copying whole medium to RAM" 1>/dev/console
 554                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 555                         else
 556                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 557                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
 558                                 if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
 559                                 then
 560                                         cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
 561                                 fi
 562                         fi
 563                 fi
 564
 565                 umount ${copyfrom}
 566                 mount -r -o move ${copyto} ${copyfrom}
 567         fi
 568
 569         rmdir ${copyto}
 570         return 0
 571 }
 572
 573 do_netsetup ()
 574 {
 575         modprobe -q af_packet # For DHCP
 576
 577         udevadm trigger
 578         udevadm settle
 579
 580         if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && \
 581            [ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
 582         then
 583
 584         # if ethdevice was not specified on the kernel command line
 585         # make sure we try to get a working network configuration
 586         # for *every* present network device (except for loopback of course)
 587         if [ -z "$ETHDEVICE" ] ; then
 588                 echo "If you want to boot from a specific device use bootoption ethdevice=..."
 589                 for device in /sys/class/net/*; do
 590                         dev=${device##*/} ;
 591                         if [ "$dev" != "lo" ] ; then
 592                                 ETHDEVICE="$ETHDEVICE $dev"
 593                         fi
 594                 done
 595         fi
 596
 597         # split args of ethdevice=eth0,eth1 into "eth0 eth1"
 598         for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
 599                 devlist="$devlist $device"
 600         done
 601
 602         [ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
 603         echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
 604
 605         # this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
 606         # an endless loop; iff execution fails give it two further tries, that's
 607         # why we use '$devlist $devlist $devlist' for the other for loop
 608         for dev in $devlist $devlist $devlist ; do
 609                 echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
 610                 ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
 611                 jobid=$!
 612                 sleep "$ETHDEV_TIMEOUT" ; sleep 1
 613                 if [ -r /proc/"$jobid"/status ] ; then
 614                         echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
 615                         kill -9 $jobid
 616                 fi
 617
 618                 # if configuration of device worked we should have an assigned
 619                 # IP address, iff so let's use the according as $DEVICE for later usage
 620                 # simple and primitive approach which seems to work fine
 621                 if ifconfig $dev | grep -q 'inet.*addr:' ; then
 622                         export DEVICE="$dev"
 623                         break
 624                 fi
 625         done
 626
 627         else
 628         ipconfig ${DEVICE} | tee /netboot.config
 629         fi
 630
 631         # source relevant ipconfig output
 632         OLDHOSTNAME=${HOSTNAME}
 633         . /tmp/net-${DEVICE}.conf
 634         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 635         export HOSTNAME
 636
 637         if [ -n "${DEVICE}" ]
 638         then
 639                 HWADDR="$(cat /sys/class/net/${DEVICE}/address)"
 640         fi
 641
 642         if [ ! -e "/etc/resolv.conf" ]
 643         then
 644                 echo "Creating /etc/resolv.conf"
 645
 646                 if [ -n "${DNSDOMAIN}" ]
 647                 then
 648                         echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
 649                         echo "search ${DNSDOMAIN}" > /etc/resolv.conf
 650                 fi
 651
 652                 for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1}
 653                 do
 654                         echo "nameserver $i" >> /etc/resolv.conf
 655                 done
 656         fi
 657
 658         # Check if we have a network device at all
 659         if ! ls /sys/class/net/"$DEVICE" > /dev/null 2>&1 && \
 660            ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 661            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 662            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 663            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 664         then
 665                 panic "No supported network device found, maybe a non-mainline driver is required."
 666         fi
 667 }
 668
 669 do_netmount()
 670 {
 671         do_netsetup
 672
 673         if [ "${NFSROOT}" = "auto" ]
 674         then
 675                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 676         fi
 677
 678         rc=1
 679
 680         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] )
 681         then
 682                 do_httpmount
 683                 return $?
 684         fi
 685
 686         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 687         then
 688                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 689         fi
 690
 691         log_begin_msg "Trying netboot from ${NFSROOT}"
 692
 693         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 694         then
 695                 rc=0
 696         elif do_nfsmount
 697         then
 698                 NETBOOT="nfs"
 699                 export NETBOOT
 700                 rc=0
 701         fi
 702
 703         log_end_msg
 704         return ${rc}
 705 }
 706
 707 do_iscsi()
 708 {
 709         do_netsetup
 710         #modprobe ib_iser
 711         modprobe iscsi_tcp
 712         local debugopt=""
 713         [ "${DEBUG}" == "Yes" ] && debugopt="-d 8"
 714         #FIXME this name is supposed to be unique - some date + ifconfig hash?
 715         ISCSI_INITIATORNAME="iqn.1993-08.org.debian.live:01:$(echo "${HWADDR}" | sed -e s/://g)"
 716         export ISCSI_INITIATORNAME
 717         if [ -n "${ISCSI_SERVER}" ] ; then
 718                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_SERVER}" -p "${ISCSI_PORT}"
 719         else
 720                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_PORTAL}" -p 3260
 721         fi
 722         if [ $? != 0 ]
 723         then
 724                 panic "Failed to log into iscsi target"
 725         fi
 726         local host="$(ls -d /sys/class/scsi_host/host*/device/iscsi_host:host* \
 727                             /sys/class/scsi_host/host*/device/iscsi_host/host* | sed -e 's:/device.*::' -e 's:.*host::')"
 728         if [ -n "${host}" ]
 729         then
 730                 local devices=""
 731                 local i=0
 732                 while [ -z "${devices}" -a $i -lt 60 ]
 733                 do
 734                         sleep 1
 735                         devices="$(ls -d /sys/class/scsi_device/${host}*/device/block:* \
 736                                          /sys/class/scsi_device/${host}*/device/block/* | sed -e 's!.*[:/]!!')"
 737                         i=$(expr $i + 1)
 738                         echo -ne $i\\r
 739                 done
 740                 for dev in $devices
 741                 do
 742                         if check_dev "null" "/dev/$dev"
 743                         then
 744                                 NETBOOT="iscsi"
 745                                 export NETBOOT
 746                                 return 0;
 747                         fi
 748                 done
 749                 panic "Failed to locate a live device on iSCSI devices (tried: $devices)."
 750         else
 751                 panic "Failed to locate iSCSI host in /sys"
 752         fi
 753 }
 754
 755 do_httpmount ()
 756 {
 757         rc=1
 758
 759         for webfile in HTTPFS FTPFS FETCH
 760         do
 761                 local url="$(eval echo \"\$\{${webfile}\}\")"
 762                 local extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 763
 764                 if [ -n "$url" ]
 765                 then
 766                         case "${extension}" in
 767                                 iso|squashfs|tgz|tar)
 768                                         if [ "${extension}" = "iso" ]
 769                                         then
 770                                                 mkdir -p "${alt_mountpoint}"
 771                                                 dest="${alt_mountpoint}"
 772                                         else
 773                                                 local dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 774                                                 mount -t ramfs ram "${mountpoint}"
 775                                                 mkdir -p "${dest}"
 776                                         fi
 777                                         if [ "${webfile}" = "FETCH" ]
 778                                         then
 779                                                 case "$url" in
 780                                                         tftp*)
 781                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 782                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 783                                                                 lfile="$(basename $url)"
 784                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 785                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 786                                                         ;;
 787
 788                                                         *)
 789                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 790                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 791                                                                 ;;
 792                                                 esac
 793                                         else
 794                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 795                                                 if [ "${webfile}" = "FTPFS" ]
 796                                                 then
 797                                                         FUSE_MOUNT="curlftpfs"
 798                                                         url="$(dirname ${url})"
 799                                                 else
 800                                                         FUSE_MOUNT="httpfs"
 801                                                 fi
 802                                                 modprobe fuse
 803                                                 $FUSE_MOUNT "${url}" "${dest}"
 804                                                 ROOT_PID="$(minips h -C "$FUSE_MOUNT" | { read x y ; echo "$x" ; } )"
 805                                         fi
 806                                         [ ${?} -eq 0 ] && rc=0
 807                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 808                                         if [ "${extension}" = "iso" ]
 809                                         then
 810                                                 isoloop=$(setup_loop "${dest}/$(basename "${url}")" "loop" "/sys/block/loop*" "" '')
 811                                                 mount -t iso9660 "${isoloop}" "${mountpoint}"
 812                                                 rc=${?}
 813                                         fi
 814                                         break
 815                                         ;;
 816
 817                                 *)
 818                                         log_begin_msg "Unrecognized archive extension for ${url}"
 819                                         ;;
 820                         esac
 821                 fi
 822         done
 823
 824         if [ ${rc} != 0 ]
 825         then
 826                 if [ -d "${alt_mountpoint}" ]
 827                 then
 828                         umount "${alt_mountpoint}"
 829                         rmdir "${alt_mountpoint}"
 830                 fi
 831                 umount "${mountpoint}"
 832         elif [ "${webfile}"  != "FETCH" ] ; then
 833                 NETBOOT="${webfile}"
 834                 export NETBOOT
 835         fi
 836
 837         return ${rc}
 838 }
 839
 840 do_nfsmount ()
 841 {
 842         rc=1
 843
 844         modprobe -q nfs
 845
 846         if [ -z "${NFSOPTS}" ]
 847         then
 848                 NFSOPTS=""
 849         fi
 850
 851         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 852
 853         # FIXME: This while loop is an ugly HACK round an nfs bug
 854         i=0
 855         while [ "$i" -lt 60 ]
 856         do
 857                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 858                 sleep 1
 859                 i="$(($i + 1))"
 860         done
 861
 862         return ${rc}
 863 }
 864
 865 do_cifsmount ()
 866 {
 867         rc=1
 868
 869         if [ -x "/sbin/mount.cifs" ]
 870         then
 871                 if [ -z "${NFSOPTS}" ]
 872                 then
 873                         CIFSOPTS="-ouser=root,password="
 874                 else
 875                         CIFSOPTS="${NFSOPTS}"
 876                 fi
 877
 878                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 879                 modprobe -q cifs
 880
 881                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 882                 then
 883                         rc=0
 884                 fi
 885         fi
 886
 887         return ${rc}
 888 }
 889
 890 do_snap_copy ()
 891 {
 892         fromdev="${1}"
 893         todir="${2}"
 894         snap_type="${3}"
 895         size=$(fs_size "${fromdev}" "" "used")
 896
 897         if [ -b "${fromdev}" ]
 898         then
 899                 # look for free mem
 900                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 901                 then
 902                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 903                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 904                 else
 905                         freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 906                 fi
 907
 908                 tomount="/mnt/tmpsnap"
 909
 910                 if [ ! -d "${tomount}" ]
 911                 then
 912                         mkdir -p "${tomount}"
 913                 fi
 914
 915                 fstype=$(get_fstype "${fromdev}")
 916
 917                 if [ -n "${fstype}" ]
 918                 then
 919                         # Copying stuff...
 920                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 921                         cp -a "${tomount}"/* ${todir}
 922                         umount "${tomount}"
 923                 else
 924                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 925                 fi
 926
 927                 rmdir "${tomount}"
 928
 929                 if echo ${fromdev} | grep -qs loop
 930                 then
 931                         losetup -d "${fromdev}"
 932                 fi
 933
 934                 return 0
 935         else
 936                 return 1
 937
 938                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 939         fi
 940 }
 941
 942 find_snap ()
 943 {
 944         # Look for ${snap_label}.* in block devices
 945         snap_label="${1}"
 946
 947         if [ "${PERSISTENT}" != "nofiles" ]
 948         then
 949                 # search for image files
 950                 snapdata=$(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")
 951         fi
 952
 953         if [ -z "${snapdata}" ]
 954         then
 955                 snapdata=$(find_cow_device "${snap_label}")
 956         fi
 957         echo "${snapdata}"
 958 }
 959
 960 try_snap ()
 961 {
 962         # copy the contents of previously found snapshot to ${snap_mount}
 963         # and remember the device and filename for resync on exit in live-boot.init
 964
 965         snapdata="${1}"
 966         snap_mount="${2}"
 967         snap_type="${3}"
 968
 969         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
 970         then
 971                 log_success_msg "found snapshot: ${snapdata}"
 972                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 973                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 974                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 975
 976                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 977                 then
 978                         break
 979                 fi
 980
 981                 RES="0"
 982
 983                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
 984                 then
 985                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
 986                         dev=$(get_backing_device "${snapback}/${snapfile}")
 987
 988                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 989                         RES="$?"
 990                 else
 991                         # cpio.gz snapshot
 992
 993                         # Unfortunately klibc's cpio is incompatible with the
 994                         # rest of the world; everything else requires -u -d,
 995                         # while klibc doesn't implement them. Try to detect
 996                         # whether it's in use.
 997                         cpiopath="$(which cpio)" || true
 998                         if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
 999                         then
1000                                 cpioargs=
1001                         else
1002                                 cpioargs='--unconditional --make-directories'
1003                         fi
1004
1005                         cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null
1006                         RES="$?"
1007
1008                         if [ "${RES}" != "0" ]
1009                         then
1010                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
1011                         fi
1012                 fi
1013
1014                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1015
1016                 if [ "${RES}" != "0" ]
1017                 then
1018                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1019                 fi
1020
1021         elif [ -b "${snapdata}" ]
1022         then
1023                 # Try to find if it could be a snapshot partition
1024                 dev="${snapdata}"
1025                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1026                 if echo "${dev}" | grep -qs loop
1027                 then
1028                         # strange things happens, user confused?
1029                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1030                         snapfile=$(basename ${snaploop})
1031                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1032                 else
1033                         snapdev="${dev}"
1034                 fi
1035
1036                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1037                 then
1038                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1039                         return 1
1040                 else
1041                         if [ -n "${snapfile}" ]
1042                         then
1043                                 # it was a loop device, user confused
1044                                 umount ${snapdev}
1045                         fi
1046                 fi
1047         else
1048                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1049                 return 1
1050         fi
1051
1052         echo "export ${snap_type}SNAP="/cow${snap_mount#$rootmnt}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1053         return 0
1054 }
1055
1056 setup_unionfs ()
1057 {
1058         image_directory="${1}"
1059         rootmnt="${2}"
1060         addimage_directory="${3}"
1061
1062         case ${UNIONTYPE} in
1063                 aufs|unionfs)
1064                         modprobe -q -b ${UNIONTYPE}
1065
1066                         if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
1067                         then
1068                                 echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
1069                                 echo "This might be really slow."
1070
1071                                 UNIONTYPE="unionfs-fuse"
1072                         fi
1073                         ;;
1074         esac
1075
1076         if [ "${UNIONTYPE}" = unionfs-fuse ]
1077         then
1078                 modprobe fuse
1079         fi
1080
1081         # run-init can't deal with images in a subdir, but we're going to
1082         # move all of these away before it runs anyway.  No, we're not,
1083         # put them in / since move-mounting them into / breaks mono and
1084         # some other apps.
1085
1086         croot="/"
1087
1088         # Let's just mount the read-only file systems first
1089         rofsstring=""
1090         rofslist=""
1091
1092         if [ "${UNIONTYPE}" = "aufs" ]
1093         then
1094                 roopt="rr"
1095                 noxino_opt="noxino,"
1096         elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
1097         then
1098                 roopt="RO"
1099         else
1100                 roopt="ro"
1101         fi
1102
1103         if [ -z "${PLAIN_ROOT}" ]
1104         then
1105                 # Read image names from ${MODULE}.module if it exists
1106                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1107                 then
1108                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1109                         do
1110                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1111                         done
1112                 elif [ -e "${image_directory}/${MODULE}.module" ]
1113                 then
1114                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1115                         do
1116                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1117                         done
1118                 else
1119                         # ${MODULE}.module does not exist, create a list of images
1120                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1121                         do
1122                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1123                                 do
1124                                         if [ -e "${IMAGE}" ]
1125                                         then
1126                                                 image_string="${image_string} ${IMAGE}"
1127                                         fi
1128                                 done
1129                         done
1130
1131                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1132                         then
1133                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1134                                 do
1135                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1136                                         do
1137                                                 if [ -e "${IMAGE}" ]
1138                                                 then
1139                                                         image_string="${image_string} ${IMAGE}"
1140                                                 fi
1141                                         done
1142                                 done
1143                         fi
1144
1145                         # Now sort the list
1146                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1147                 fi
1148
1149         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1150
1151                 mkdir -p "${croot}"
1152
1153                 for image in ${image_string}
1154                 do
1155                         imagename=$(basename "${image}")
1156
1157                         export image devname
1158                         maybe_break live-realpremount
1159                         log_begin_msg "Running /scripts/live-realpremount"
1160                         run_scripts /scripts/live-realpremount
1161                         log_end_msg
1162
1163                         if [ -d "${image}" ]
1164                         then
1165                                 # it is a plain directory: do nothing
1166                                 rofsstring="${image}=${roopt}:${rofsstring}"
1167                                 rofslist="${image} ${rofslist}"
1168                         elif [ -f "${image}" ]
1169                         then
1170                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1171                                 then
1172                                         backdev=$(get_backing_device "${image}" "-r")
1173                                 else
1174                                         backdev=$(get_backing_device "${image}")
1175                                 fi
1176                                 fstype=$(get_fstype "${backdev}")
1177
1178                                 if [ "${fstype}" = "unknown" ]
1179                                 then
1180                                         panic "Unknown file system type on ${backdev} (${image})"
1181                                 fi
1182
1183                                 if [ -z "${fstype}" ]
1184                                 then
1185                                         fstype="${imagename##*.}"
1186                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1187                                 fi
1188
1189                                 mkdir -p "${croot}/${imagename}"
1190                                 log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1191                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1192                                 log_end_msg
1193                         fi
1194                 done
1195         else
1196                 # we have a plain root system
1197                 mkdir -p "${croot}/filesystem"
1198                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1199                 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}"
1200                 # probably broken:
1201                 mount -o bind ${croot}/filesystem $mountpoint
1202                 log_end_msg
1203         fi
1204
1205         rofsstring=${rofsstring%:}
1206
1207         mkdir -p /cow
1208
1209         # Looking for "${root_persistence}" device or file
1210         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1211         then
1212                 if [ -z "${QUICKUSBMODULES}" ]
1213                 then
1214                         # Load USB modules
1215                         num_block=$(ls -l /sys/block | wc -l)
1216                         for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1217                         do
1218                                 modprobe -q -b ${module}
1219                         done
1220
1221                         udevadm trigger
1222                         udevadm settle
1223
1224                         # For some reason, udevsettle does not block in this scenario,
1225                         # so we sleep for a little while.
1226                         #
1227                         # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1228                         for timeout in 5 4 3 2 1
1229                         do
1230                                 sleep 1
1231
1232                                 if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1233                                 then
1234                                         break
1235                                 fi
1236                         done
1237                 fi
1238
1239                 # search for label and files (this could be hugely optimized)
1240                 cowprobe=$(find_cow_device "${root_persistence}")
1241                 if [ -b "${cowprobe}" ]
1242                 then
1243                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1244                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1245                         # snapshots to be sure to really store some e.g key config files,
1246                         # but not on the same media
1247                         blacklistdev="${cowprobe}"
1248                         PERSISTENCE_IS_ON="1"
1249                         export PERSISTENCE_IS_ON
1250                 fi
1251                 # homecow just mount something on /home, this should be generalized some way
1252                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1253                 if [ -b "${homecow}" ]
1254                 then
1255                         PERSISTENCE_IS_ON="1"
1256                         export PERSISTENCE_IS_ON
1257                 fi
1258                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1259                 # This second type should be removed when snapshot will get smarter,
1260                 # hence when "/etc/live-snapshot*list" will be supported also by
1261                 # ext2|ext3|ext4|jffs2 snapshot types.
1262                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1263
1264                 if [ -b "${cowprobe}" ]
1265                 then
1266                         cowdevice=${cowprobe}
1267                         cow_fstype=$(get_fstype "${cowprobe}")
1268                         cow_mountopt="rw,noatime"
1269
1270                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1271                         then
1272                                 fsck -y ${cowdevice}
1273                         fi
1274                 else
1275                         log_warning_msg "Unable to find the persistent medium"
1276                         cowdevice="tmpfs"
1277                         cow_fstype="tmpfs"
1278                         cow_mountopt="rw,noatime,mode=755"
1279                 fi
1280         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1281         then
1282                 # check if there are any nfs options
1283                 if echo ${NFS_COW}|grep -q ','
1284                 then
1285                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1286                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1287                 else
1288                         nfs_cow_opts="-o nolock"
1289                         nfs_cow=${NFS_COW}
1290                 fi
1291                 mac="$(get_mac)"
1292                 if [ -n "${mac}" ]
1293                 then
1294                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1295                         cow_fstype="nfs"
1296                 else
1297                         panic "unable to determine mac address"
1298                 fi
1299         else
1300                 cowdevice="tmpfs"
1301                 cow_fstype="tmpfs"
1302                 cow_mountopt="rw,noatime,mode=755"
1303         fi
1304
1305         if [ "${cow_fstype}" = "nfs" ]
1306         then
1307                 log_begin_msg \
1308                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1309                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1310                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1311         else
1312                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1313                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1314         fi
1315
1316         rofscount=$(echo ${rofslist} |wc -w)
1317
1318         if [ -n "${EXPOSED_ROOT}" ]
1319         then
1320                 if [ ${rofscount} -ne 1 ]
1321                 then
1322                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1323                 fi
1324                 exposedrootfs=${rofslist%% }
1325
1326                 mount --bind ${exposedrootfs} ${rootmnt} || \
1327                         panic "bind mount of ${exposedrootfs} failed"
1328
1329                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1330                 then
1331                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1332                 else
1333                         cow_dirs=''
1334                 fi
1335
1336                 for dir in ${cow_dirs}; do
1337                         mkdir -p /cow${dir}
1338
1339                         case "${UNIONTYPE}" in
1340                                 unionfs-fuse)
1341                                         (ulimit -n 16384; unionfs-fuse -o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid /cow=RW:${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}")
1342                                         mkdir -p /dev/.initramfs/varrun
1343                                         pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1344                                         ;;
1345
1346                                 *)
1347                                         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}${dir}=ro"
1348                                         ;;
1349                         esac
1350                 done
1351         else
1352                 case "${UNIONTYPE}" in
1353                         unionfs-fuse)
1354                                 (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}")
1355                                 mkdir -p /dev/.initramfs/varrun
1356                                 pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1357                                 ;;
1358
1359                         *)
1360                                 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:${rofsstring}"
1361                                 ;;
1362                 esac
1363         fi
1364
1365         # Correct the permissions of /:
1366         chmod 0755 "${rootmnt}"
1367
1368         # tmpfs file systems
1369         touch /etc/fstab
1370         mkdir -p "${rootmnt}/live"
1371         mount -t tmpfs tmpfs ${rootmnt}/live
1372
1373         # Adding other custom mounts
1374         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1375         then
1376                 # directly mount /home
1377                 # FIXME: add a custom mounts configurable system
1378
1379                 if [ -b "${homecow}" ]
1380                 then
1381                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1382                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1383                 else
1384                         log_warning_msg "Unable to find the persistent home medium"
1385                 fi
1386
1387                 # Look for other snapshots to copy in
1388                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1389                 # This second type should be removed when snapshot grow smarter
1390                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1391         fi
1392
1393         if [ -n "${SHOWMOUNTS}" ]
1394         then
1395                 for d in ${rofslist}
1396                 do
1397                         mkdir -p "${rootmnt}/live/${d##*/}"
1398
1399                         case d in
1400                                 *.dir)
1401                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1402                                         ;;
1403
1404                                 *)
1405                                         case "${UNIONTYPE}" in
1406                                                 unionfs-fuse)
1407                                                         mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1408                                                         ;;
1409
1410                                                 *)
1411                                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1412                                                         ;;
1413                                         esac
1414                                         ;;
1415                         esac
1416                 done
1417         fi
1418
1419         # shows cow fs on /cow for use by live-snapshot
1420         mkdir -p "${rootmnt}/live/cow"
1421         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 ${rootmnt}/live/cow"
1422 }
1423
1424 check_dev ()
1425 {
1426         sysdev="${1}"
1427         devname="${2}"
1428         skip_uuid_check="${3}"
1429
1430         # support for fromiso=.../isofrom=....
1431         if [ -n "$FROMISO" ]
1432         then
1433                 ISO_DEVICE=$(dirname $FROMISO)
1434                 if ! [ -b $ISO_DEVICE ]
1435                 then
1436                         # to support unusual device names like /dev/cciss/c0d0p1
1437                         # as well we have to identify the block device name, let's
1438                         # do that for up to 15 levels
1439                         i=15
1440                         while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
1441                         do
1442                                 ISO_DEVICE=$(dirname ${ISO_DEVICE})
1443                                 [ -b "$ISO_DEVICE" ] && break
1444                                 i=$(($i -1))
1445                         done
1446                 fi
1447
1448                 if [ "$ISO_DEVICE" = "/" ]
1449                 then
1450                         echo "Warning: device for bootoption isofrom= ($FROMISO) not found.">>/live.log
1451                 else
1452                         mkdir /isofrom
1453                         mount "$ISO_DEVICE" /isofrom
1454                         ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
1455                         loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1456                         devname="${loopdevname}"
1457                 fi
1458         fi
1459
1460         if [ -z "${devname}" ]
1461         then
1462                 devname=$(sys2dev "${sysdev}")
1463         fi
1464
1465         if [ -d "${devname}" ]
1466         then
1467                 mount -o bind "${devname}" $mountpoint || continue
1468
1469                 if is_live_path $mountpoint
1470                 then
1471                         echo $mountpoint
1472                         return 0
1473                 else
1474                         umount $mountpoint
1475                 fi
1476         fi
1477         [ -e "$devname" ] || continue
1478
1479         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1480         then
1481                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1482                 devname="${loopdevname}"
1483         fi
1484
1485         fstype=$(get_fstype "${devname}")
1486
1487         if is_supported_fs ${fstype}
1488         then
1489                 devuid=$(blkid -o value -s UUID "$devname")
1490                 [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
1491                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1492                 [ -n "$devuid" ] && echo "$devuid" >> $tried
1493
1494                 if is_live_path ${mountpoint} && \
1495                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1496                 then
1497                         echo ${mountpoint}
1498                         return 0
1499                 else
1500                         umount ${mountpoint}
1501                 fi
1502         fi
1503
1504         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1505         then
1506                 losetup -d "${loopdevname}"
1507         fi
1508
1509         return 1
1510 }
1511
1512 find_livefs ()
1513 {
1514         timeout="${1}"
1515
1516         # don't start autodetection before timeout has expired
1517         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1518         then
1519                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1520                 then
1521                         return 1
1522                 fi
1523         fi
1524
1525         # first look at the one specified in the command line
1526         case "${LIVE_MEDIA}" in
1527                 removable-usb)
1528                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1529                         do
1530                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1531                                 then
1532                                         if readlink ${sysblock} | grep -q usb ||
1533                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1534                                         then
1535                                                 for dev in $(subdevices "${sysblock}")
1536                                                 do
1537                                                         if check_dev "${dev}"
1538                                                         then
1539                                                                 return 0
1540                                                         fi
1541                                                 done
1542                                         fi
1543                                 fi
1544                         done
1545                         return 1
1546                         ;;
1547
1548                 removable)
1549                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1550                         do
1551                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1552                                 then
1553                                         for dev in $(subdevices "${sysblock}")
1554                                         do
1555                                                 if check_dev "${dev}"
1556                                                 then
1557                                                         return 0
1558                                                 fi
1559                                         done
1560                                 fi
1561                         done
1562                         return 1
1563                         ;;
1564
1565                 *)
1566                         if [ ! -z "${LIVE_MEDIA}" ]
1567                         then
1568                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1569                                 then
1570                                         return 0
1571                                 fi
1572                         fi
1573                         ;;
1574         esac
1575
1576         # or do the scan of block devices
1577         # prefer removable devices over non-removable devices, so scan them first
1578         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | egrep -v "/(loop|ram|dm-|fd)")
1579         do
1580                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1581                 then
1582                         removable_devices_to_scan="$removable_devices_to_scan $sysblock"
1583                 else
1584                         nonremovable_devices_to_scan="$nonremovable_devices_to_scan $sysblock"
1585                 fi
1586         done
1587         devices_to_scan="$removable_devices_to_scan $nonremovable_devices_to_scan"
1588
1589         for sysblock in $devices_to_scan
1590         do
1591                 devname=$(sys2dev "${sysblock}")
1592                 [ -e "$devname" ] || continue
1593                 fstype=$(get_fstype "${devname}")
1594
1595                 if /lib/udev/cdrom_id ${devname} > /dev/null
1596                 then
1597                         if check_dev "null" "${devname}"
1598                         then
1599                                 return 0
1600                         fi
1601                 elif is_nice_device "${sysblock}"
1602                 then
1603                         for dev in $(subdevices "${sysblock}")
1604                         do
1605                                 if check_dev "${dev}"
1606                                 then
1607                                         return 0
1608                                 fi
1609                         done
1610                 elif [ "${fstype}" = "squashfs" -o \
1611                         "${fstype}" = "btrfs" -o \
1612                         "${fstype}" = "ext2" -o \
1613                         "${fstype}" = "ext3" -o \
1614                         "${fstype}" = "ext4" -o \
1615                         "${fstype}" = "jffs2" ]
1616                 then
1617                         # This is an ugly hack situation, the block device has
1618                         # an image directly on it.  It's hopefully
1619                         # live-boot, so take it and run with it.
1620                         ln -s "${devname}" "${devname}.${fstype}"
1621                         echo "${devname}.${fstype}"
1622                         return 0
1623                 fi
1624         done
1625
1626         return 1
1627 }
1628
1629 set_usplash_timeout ()
1630 {
1631         if [ -x /sbin/usplash_write ]
1632         then
1633                 /sbin/usplash_write "TIMEOUT 120"
1634         else if [ -x /sbin/splashy_update ] ; then
1635                 /sbin/splashy_update "TIMEOUT 120"
1636         fi ; fi
1637 }
1638
1639 integrity_check ()
1640 {
1641         media_mountpoint="${1}"
1642
1643         log_begin_msg "Checking media integrity"
1644
1645         cd ${media_mountpoint}
1646         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1647         RC="${?}"
1648
1649         log_end_msg
1650
1651         if [ "${RC}" -eq 0 ]
1652         then
1653                 log_success_msg "Everything ok, will reboot in 10 seconds."
1654                 sleep 10
1655                 cd /
1656                 umount ${media_mountpoint}
1657                 sync
1658                 echo u > /proc/sysrq-trigger
1659                 echo b > /proc/sysrq-trigger
1660         else
1661                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1662         fi
1663 }
1664
1665 start_usplash_pulse ()
1666 {
1667         if [ -x /sbin/usplash_write ]
1668         then
1669                 /sbin/usplash_write "PULSELOGO"
1670         fi
1671 }
1672
1673 mountroot ()
1674 {
1675         if [ -x /scripts/local-top/cryptroot ]; then
1676             /scripts/local-top/cryptroot
1677         fi
1678
1679         exec 6>&1
1680         exec 7>&2
1681         exec > live.log
1682         exec 2>&1
1683         tail -f live.log >&7 &
1684         tailpid="${!}"
1685
1686         # Ensure 'panic' function is overridden
1687         . /scripts/live-functions
1688
1689         Arguments
1690
1691         set_usplash_timeout
1692         start_usplash_pulse
1693
1694         maybe_break live-premount
1695         log_begin_msg "Running /scripts/live-premount"
1696         run_scripts /scripts/live-premount
1697         log_end_msg
1698
1699         # Needed here too because some things (*cough* udev *cough*)
1700         # changes the timeout
1701
1702         set_usplash_timeout
1703
1704         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1705         then
1706                 if do_netmount
1707                 then
1708                         livefs_root="${mountpoint}"
1709                 else
1710                         panic "Unable to find a live file system on the network"
1711                 fi
1712         else
1713                 if [ -n "${ISCSI_PORTAL}" ]
1714                 then
1715                         do_iscsi && livefs_root="${mountpoint}"
1716                 elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1717                 then
1718                         # Do a local boot from hd
1719                         livefs_root=${ROOT}
1720                 else
1721                         if [ -x /usr/bin/memdiskfind ]
1722                         then
1723                                 MEMDISK=$(/usr/bin/memdiskfind)
1724
1725                                 if [ $? -eq 0 ]
1726                                 then
1727                                         # We found a memdisk, set up phram
1728                                         modprobe phram phram=memdisk,${MEMDISK}
1729
1730                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
1731                                         modprobe mtdblock
1732                                 fi
1733                         fi
1734
1735                         # Scan local devices for the image
1736                         i=0
1737                         while [ "$i" -lt 60 ]
1738                         do
1739                                 livefs_root=$(find_livefs ${i})
1740
1741                                 if [ -n "${livefs_root}" ]
1742                                 then
1743                                         break
1744                                 fi
1745
1746                                 sleep 1
1747                                 i="$(($i + 1))"
1748                         done
1749                 fi
1750         fi
1751
1752         if [ -z "${livefs_root}" ]
1753         then
1754                 panic "Unable to find a medium containing a live file system"
1755         fi
1756
1757         if [ "${INTEGRITY_CHECK}" ]
1758         then
1759                 integrity_check "${livefs_root}"
1760         fi
1761
1762         if [ "${TORAM}" ]
1763         then
1764                 live_dest="ram"
1765         elif [ "${TODISK}" ]
1766         then
1767                 live_dest="${TODISK}"
1768         fi
1769
1770         if [ "${live_dest}" ]
1771         then
1772                 log_begin_msg "Copying live media to ${live_dest}"
1773                 copy_live_to "${livefs_root}" "${live_dest}"
1774                 log_end_msg
1775         fi
1776
1777         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1778         # because the mountpoint is left behind in /proc/mounts, so let's get
1779         # rid of it when running from RAM
1780         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1781         then
1782           losetup -d /dev/loop0
1783           grep -q /isofrom /proc/mounts && umount /isofrom
1784         fi
1785
1786         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1787         then
1788                 setup_unionfs "${livefs_root}" "${rootmnt}"
1789         else
1790                 mac="$(get_mac)"
1791                 mac="$(echo ${mac} | sed 's/-//g')"
1792                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1793         fi
1794
1795
1796         if [ -n "${ROOT_PID}" ] ; then
1797                 echo "${ROOT_PID}" > "${rootmnt}"/live/root.pid
1798         fi
1799
1800         log_end_msg
1801
1802         # unionfs-fuse needs /dev to be bind-mounted for the duration of
1803         # live-bottom; udev's init script will take care of things after that
1804         if [ "${UNIONTYPE}" = unionfs-fuse ]
1805         then
1806                 mount -n -o bind /dev "${rootmnt}/dev"
1807         fi
1808
1809         # Move to the new root filesystem so that programs there can get at it.
1810         if [ ! -d /root/live/image ]
1811         then
1812                 mkdir -p /root/live/image
1813                 mount --move /live/image /root/live/image
1814         fi
1815
1816         maybe_break live-bottom
1817         log_begin_msg "Running /scripts/live-bottom\n"
1818
1819         run_scripts /scripts/live-bottom
1820         log_end_msg
1821
1822         if [ "${UNIONFS}" = unionfs-fuse ]
1823         then
1824                 umount "${rootmnt}/dev"
1825         fi
1826
1827         exec 1>&6 6>&-
1828         exec 2>&7 7>&-
1829         kill ${tailpid}
1830         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1831 }