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}" "${dest}"
 804                                                 FUSE_PID="$(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="${webfile}"
 834                 export NETBOOT
 835                 if [ -n "${FUSE_PID}" ] ; then
 836                         echo "${FUSE_PID}" > ${mountpoint}/root.pid
 837                 fi
 838         fi
 839
 840         return ${rc}
 841 }
 842
 843 do_nfsmount ()
 844 {
 845         rc=1
 846
 847         modprobe -q nfs
 848
 849         if [ -z "${NFSOPTS}" ]
 850         then
 851                 NFSOPTS=""
 852         fi
 853
 854         log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 855
 856         # FIXME: This while loop is an ugly HACK round an nfs bug
 857         i=0
 858         while [ "$i" -lt 60 ]
 859         do
 860                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 861                 sleep 1
 862                 i="$(($i + 1))"
 863         done
 864
 865         return ${rc}
 866 }
 867
 868 do_cifsmount ()
 869 {
 870         rc=1
 871
 872         if [ -x "/sbin/mount.cifs" ]
 873         then
 874                 if [ -z "${NFSOPTS}" ]
 875                 then
 876                         CIFSOPTS="-ouser=root,password="
 877                 else
 878                         CIFSOPTS="${NFSOPTS}"
 879                 fi
 880
 881                 log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 882                 modprobe -q cifs
 883
 884                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 885                 then
 886                         rc=0
 887                 fi
 888         fi
 889
 890         return ${rc}
 891 }
 892
 893 do_snap_copy ()
 894 {
 895         fromdev="${1}"
 896         todir="${2}"
 897         snap_type="${3}"
 898         size=$(fs_size "${fromdev}" "" "used")
 899
 900         if [ -b "${fromdev}" ]
 901         then
 902                 # look for free mem
 903                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 904                 then
 905                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 906                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 907                 else
 908                         freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 909                 fi
 910
 911                 tomount="/mnt/tmpsnap"
 912
 913                 if [ ! -d "${tomount}" ]
 914                 then
 915                         mkdir -p "${tomount}"
 916                 fi
 917
 918                 fstype=$(get_fstype "${fromdev}")
 919
 920                 if [ -n "${fstype}" ]
 921                 then
 922                         # Copying stuff...
 923                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 924                         cp -a "${tomount}"/* ${todir}
 925                         umount "${tomount}"
 926                 else
 927                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 928                 fi
 929
 930                 rmdir "${tomount}"
 931
 932                 if echo ${fromdev} | grep -qs loop
 933                 then
 934                         losetup -d "${fromdev}"
 935                 fi
 936
 937                 return 0
 938         else
 939                 return 1
 940
 941                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 942         fi
 943 }
 944
 945 find_snap ()
 946 {
 947         # Look for ${snap_label}.* in block devices
 948         snap_label="${1}"
 949
 950         if [ "${PERSISTENT}" != "nofiles" ]
 951         then
 952                 # search for image files
 953                 snapdata=$(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")
 954         fi
 955
 956         if [ -z "${snapdata}" ]
 957         then
 958                 snapdata=$(find_cow_device "${snap_label}")
 959         fi
 960         echo "${snapdata}"
 961 }
 962
 963 try_snap ()
 964 {
 965         # copy the contents of previously found snapshot to ${snap_mount}
 966         # and remember the device and filename for resync on exit in live-boot.init
 967
 968         snapdata="${1}"
 969         snap_mount="${2}"
 970         snap_type="${3}"
 971
 972         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
 973         then
 974                 log_success_msg "found snapshot: ${snapdata}"
 975                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 976                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 977                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 978
 979                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 980                 then
 981                         break
 982                 fi
 983
 984                 RES="0"
 985
 986                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
 987                 then
 988                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
 989                         dev=$(get_backing_device "${snapback}/${snapfile}")
 990
 991                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 992                         RES="$?"
 993                 else
 994                         # cpio.gz snapshot
 995
 996                         # Unfortunately klibc's cpio is incompatible with the
 997                         # rest of the world; everything else requires -u -d,
 998                         # while klibc doesn't implement them. Try to detect
 999                         # whether it's in use.
1000                         cpiopath="$(which cpio)" || true
1001                         if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
1002                         then
1003                                 cpioargs=
1004                         else
1005                                 cpioargs='--unconditional --make-directories'
1006                         fi
1007
1008                         cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null
1009                         RES="$?"
1010
1011                         if [ "${RES}" != "0" ]
1012                         then
1013                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
1014                         fi
1015                 fi
1016
1017                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1018
1019                 if [ "${RES}" != "0" ]
1020                 then
1021                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1022                 fi
1023
1024         elif [ -b "${snapdata}" ]
1025         then
1026                 # Try to find if it could be a snapshot partition
1027                 dev="${snapdata}"
1028                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1029                 if echo "${dev}" | grep -qs loop
1030                 then
1031                         # strange things happens, user confused?
1032                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1033                         snapfile=$(basename ${snaploop})
1034                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1035                 else
1036                         snapdev="${dev}"
1037                 fi
1038
1039                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1040                 then
1041                         log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1042                         return 1
1043                 else
1044                         if [ -n "${snapfile}" ]
1045                         then
1046                                 # it was a loop device, user confused
1047                                 umount ${snapdev}
1048                         fi
1049                 fi
1050         else
1051                 log_warning_msg "Impossible to include the ${snap_type} Snapshot"
1052                 return 1
1053         fi
1054
1055         echo "export ${snap_type}SNAP="/cow${snap_mount#$rootmnt}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
1056         return 0
1057 }
1058
1059 setup_unionfs ()
1060 {
1061         image_directory="${1}"
1062         rootmnt="${2}"
1063         addimage_directory="${3}"
1064
1065         case ${UNIONTYPE} in
1066                 aufs|unionfs)
1067                         modprobe -q -b ${UNIONTYPE}
1068
1069                         if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
1070                         then
1071                                 echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
1072                                 echo "This might be really slow."
1073
1074                                 UNIONTYPE="unionfs-fuse"
1075                         fi
1076                         ;;
1077         esac
1078
1079         if [ "${UNIONTYPE}" = unionfs-fuse ]
1080         then
1081                 modprobe fuse
1082         fi
1083
1084         # run-init can't deal with images in a subdir, but we're going to
1085         # move all of these away before it runs anyway.  No, we're not,
1086         # put them in / since move-mounting them into / breaks mono and
1087         # some other apps.
1088
1089         croot="/"
1090
1091         # Let's just mount the read-only file systems first
1092         rofsstring=""
1093         rofslist=""
1094
1095         if [ "${UNIONTYPE}" = "aufs" ]
1096         then
1097                 roopt="rr"
1098                 noxino_opt="noxino,"
1099         elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
1100         then
1101                 roopt="RO"
1102         else
1103                 roopt="ro"
1104         fi
1105
1106         if [ -z "${PLAIN_ROOT}" ]
1107         then
1108                 # Read image names from ${MODULE}.module if it exists
1109                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1110                 then
1111                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1112                         do
1113                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1114                         done
1115                 elif [ -e "${image_directory}/${MODULE}.module" ]
1116                 then
1117                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1118                         do
1119                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1120                         done
1121                 else
1122                         # ${MODULE}.module does not exist, create a list of images
1123                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1124                         do
1125                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1126                                 do
1127                                         if [ -e "${IMAGE}" ]
1128                                         then
1129                                                 image_string="${image_string} ${IMAGE}"
1130                                         fi
1131                                 done
1132                         done
1133
1134                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1135                         then
1136                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1137                                 do
1138                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1139                                         do
1140                                                 if [ -e "${IMAGE}" ]
1141                                                 then
1142                                                         image_string="${image_string} ${IMAGE}"
1143                                                 fi
1144                                         done
1145                                 done
1146                         fi
1147
1148                         # Now sort the list
1149                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1150                 fi
1151
1152         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1153
1154                 mkdir -p "${croot}"
1155
1156                 for image in ${image_string}
1157                 do
1158                         imagename=$(basename "${image}")
1159
1160                         export image devname
1161                         maybe_break live-realpremount
1162                         log_begin_msg "Running /scripts/live-realpremount"
1163                         run_scripts /scripts/live-realpremount
1164                         log_end_msg
1165
1166                         if [ -d "${image}" ]
1167                         then
1168                                 # it is a plain directory: do nothing
1169                                 rofsstring="${image}=${roopt}:${rofsstring}"
1170                                 rofslist="${image} ${rofslist}"
1171                         elif [ -f "${image}" ]
1172                         then
1173                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1174                                 then
1175                                         backdev=$(get_backing_device "${image}" "-r")
1176                                 else
1177                                         backdev=$(get_backing_device "${image}")
1178                                 fi
1179                                 fstype=$(get_fstype "${backdev}")
1180
1181                                 if [ "${fstype}" = "unknown" ]
1182                                 then
1183                                         panic "Unknown file system type on ${backdev} (${image})"
1184                                 fi
1185
1186                                 if [ -z "${fstype}" ]
1187                                 then
1188                                         fstype="${imagename##*.}"
1189                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1190                                 fi
1191
1192                                 mkdir -p "${croot}/${imagename}"
1193                                 log_begin_msg "Mounting \"${image}\" on \"${croot}${imagename}\" via \"${backdev}\""
1194                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
1195                                 log_end_msg
1196                         fi
1197                 done
1198         else
1199                 # we have a plain root system
1200                 mkdir -p "${croot}/filesystem"
1201                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1202                 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}"
1203                 # probably broken:
1204                 mount -o bind ${croot}/filesystem $mountpoint
1205                 log_end_msg
1206         fi
1207
1208         rofsstring=${rofsstring%:}
1209
1210         mkdir -p /cow
1211
1212         # Looking for "${root_persistence}" device or file
1213         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1214         then
1215                 if [ -z "${QUICKUSBMODULES}" ]
1216                 then
1217                         # Load USB modules
1218                         num_block=$(ls -l /sys/block | wc -l)
1219                         for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1220                         do
1221                                 modprobe -q -b ${module}
1222                         done
1223
1224                         udevadm trigger
1225                         udevadm settle
1226
1227                         # For some reason, udevsettle does not block in this scenario,
1228                         # so we sleep for a little while.
1229                         #
1230                         # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1231                         for timeout in 5 4 3 2 1
1232                         do
1233                                 sleep 1
1234
1235                                 if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1236                                 then
1237                                         break
1238                                 fi
1239                         done
1240                 fi
1241
1242                 # search for label and files (this could be hugely optimized)
1243                 cowprobe=$(find_cow_device "${root_persistence}")
1244                 if [ -b "${cowprobe}" ]
1245                 then
1246                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1247                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1248                         # snapshots to be sure to really store some e.g key config files,
1249                         # but not on the same media
1250                         blacklistdev="${cowprobe}"
1251                         PERSISTENCE_IS_ON="1"
1252                         export PERSISTENCE_IS_ON
1253                 fi
1254                 # homecow just mount something on /home, this should be generalized some way
1255                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1256                 if [ -b "${homecow}" ]
1257                 then
1258                         PERSISTENCE_IS_ON="1"
1259                         export PERSISTENCE_IS_ON
1260                 fi
1261                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1262                 # This second type should be removed when snapshot will get smarter,
1263                 # hence when "/etc/live-snapshot*list" will be supported also by
1264                 # ext2|ext3|ext4|jffs2 snapshot types.
1265                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1266
1267                 if [ -b "${cowprobe}" ]
1268                 then
1269                         cowdevice=${cowprobe}
1270                         cow_fstype=$(get_fstype "${cowprobe}")
1271                         cow_mountopt="rw,noatime"
1272
1273                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1274                         then
1275                                 fsck -y ${cowdevice}
1276                         fi
1277                 else
1278                         log_warning_msg "Unable to find the persistent medium"
1279                         cowdevice="tmpfs"
1280                         cow_fstype="tmpfs"
1281                         cow_mountopt="rw,noatime,mode=755"
1282                 fi
1283         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1284         then
1285                 # check if there are any nfs options
1286                 if echo ${NFS_COW}|grep -q ','
1287                 then
1288                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1289                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1290                 else
1291                         nfs_cow_opts="-o nolock"
1292                         nfs_cow=${NFS_COW}
1293                 fi
1294                 mac="$(get_mac)"
1295                 if [ -n "${mac}" ]
1296                 then
1297                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1298                         cow_fstype="nfs"
1299                 else
1300                         panic "unable to determine mac address"
1301                 fi
1302         else
1303                 cowdevice="tmpfs"
1304                 cow_fstype="tmpfs"
1305                 cow_mountopt="rw,noatime,mode=755"
1306         fi
1307
1308         if [ "${cow_fstype}" = "nfs" ]
1309         then
1310                 log_begin_msg \
1311                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1312                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1313                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1314         else
1315                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1316                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1317         fi
1318
1319         rofscount=$(echo ${rofslist} |wc -w)
1320
1321         if [ -n "${EXPOSED_ROOT}" ]
1322         then
1323                 if [ ${rofscount} -ne 1 ]
1324                 then
1325                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1326                 fi
1327                 exposedrootfs=${rofslist%% }
1328
1329                 mount --bind ${exposedrootfs} ${rootmnt} || \
1330                         panic "bind mount of ${exposedrootfs} failed"
1331
1332                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1333                 then
1334                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1335                 else
1336                         cow_dirs=''
1337                 fi
1338
1339                 for dir in ${cow_dirs}; do
1340                         mkdir -p /cow${dir}
1341
1342                         case "${UNIONTYPE}" in
1343                                 unionfs-fuse)
1344                                         (ulimit -n 16384; unionfs-fuse -o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid /cow=RW:${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}")
1345                                         mkdir -p /dev/.initramfs/varrun
1346                                         pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1347                                         ;;
1348
1349                                 *)
1350                                         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}${dir}=ro"
1351                                         ;;
1352                         esac
1353                 done
1354         else
1355                 case "${UNIONTYPE}" in
1356                         unionfs-fuse)
1357                                 (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}")
1358                                 mkdir -p /dev/.initramfs/varrun
1359                                 pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1360                                 ;;
1361
1362                         *)
1363                                 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:${rofsstring}"
1364                                 ;;
1365                 esac
1366         fi
1367
1368         # Correct the permissions of /:
1369         chmod 0755 "${rootmnt}"
1370
1371         # tmpfs file systems
1372         touch /etc/fstab
1373         mkdir -p "${rootmnt}/live"
1374         mount -t tmpfs tmpfs ${rootmnt}/live
1375
1376         # Adding other custom mounts
1377         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1378         then
1379                 # directly mount /home
1380                 # FIXME: add a custom mounts configurable system
1381
1382                 if [ -b "${homecow}" ]
1383                 then
1384                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1385                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1386                 else
1387                         log_warning_msg "Unable to find the persistent home medium"
1388                 fi
1389
1390                 # Look for other snapshots to copy in
1391                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1392                 # This second type should be removed when snapshot grow smarter
1393                 try_snap "${home_snapdata}" "${rootmnt}/home" "HOME"
1394         fi
1395
1396         if [ -n "${SHOWMOUNTS}" ]
1397         then
1398                 for d in ${rofslist}
1399                 do
1400                         mkdir -p "${rootmnt}/live/${d##*/}"
1401
1402                         case d in
1403                                 *.dir)
1404                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1405                                         ;;
1406
1407                                 *)
1408                                         case "${UNIONTYPE}" in
1409                                                 unionfs-fuse)
1410                                                         mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1411                                                         ;;
1412
1413                                                 *)
1414                                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1415                                                         ;;
1416                                         esac
1417                                         ;;
1418                         esac
1419                 done
1420         fi
1421
1422         # shows cow fs on /cow for use by live-snapshot
1423         mkdir -p "${rootmnt}/live/cow"
1424         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 ${rootmnt}/live/cow"
1425 }
1426
1427 check_dev ()
1428 {
1429         sysdev="${1}"
1430         devname="${2}"
1431         skip_uuid_check="${3}"
1432
1433         # support for fromiso=.../isofrom=....
1434         if [ -n "$FROMISO" ]
1435         then
1436                 ISO_DEVICE=$(dirname $FROMISO)
1437                 if ! [ -b $ISO_DEVICE ]
1438                 then
1439                         # to support unusual device names like /dev/cciss/c0d0p1
1440                         # as well we have to identify the block device name, let's
1441                         # do that for up to 15 levels
1442                         i=15
1443                         while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
1444                         do
1445                                 ISO_DEVICE=$(dirname ${ISO_DEVICE})
1446                                 [ -b "$ISO_DEVICE" ] && break
1447                                 i=$(($i -1))
1448                         done
1449                 fi
1450
1451                 if [ "$ISO_DEVICE" = "/" ]
1452                 then
1453                         echo "Warning: device for bootoption isofrom= ($FROMISO) not found.">>/live.log
1454                 else
1455                         mkdir /isofrom
1456                         mount "$ISO_DEVICE" /isofrom
1457                         ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
1458                         loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1459                         devname="${loopdevname}"
1460                 fi
1461         fi
1462
1463         if [ -z "${devname}" ]
1464         then
1465                 devname=$(sys2dev "${sysdev}")
1466         fi
1467
1468         if [ -d "${devname}" ]
1469         then
1470                 mount -o bind "${devname}" $mountpoint || continue
1471
1472                 if is_live_path $mountpoint
1473                 then
1474                         echo $mountpoint
1475                         return 0
1476                 else
1477                         umount $mountpoint
1478                 fi
1479         fi
1480         [ -e "$devname" ] || continue
1481
1482         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1483         then
1484                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1485                 devname="${loopdevname}"
1486         fi
1487
1488         fstype=$(get_fstype "${devname}")
1489
1490         if is_supported_fs ${fstype}
1491         then
1492                 devuid=$(blkid -o value -s UUID "$devname")
1493                 [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
1494                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1495                 [ -n "$devuid" ] && echo "$devuid" >> $tried
1496
1497                 if is_live_path ${mountpoint} && \
1498                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1499                 then
1500                         echo ${mountpoint}
1501                         return 0
1502                 else
1503                         umount ${mountpoint}
1504                 fi
1505         fi
1506
1507         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1508         then
1509                 losetup -d "${loopdevname}"
1510         fi
1511
1512         return 1
1513 }
1514
1515 find_livefs ()
1516 {
1517         timeout="${1}"
1518
1519         # don't start autodetection before timeout has expired
1520         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1521         then
1522                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1523                 then
1524                         return 1
1525                 fi
1526         fi
1527
1528         # first look at the one specified in the command line
1529         case "${LIVE_MEDIA}" in
1530                 removable-usb)
1531                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1532                         do
1533                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1534                                 then
1535                                         if readlink ${sysblock} | grep -q usb ||
1536                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1537                                         then
1538                                                 for dev in $(subdevices "${sysblock}")
1539                                                 do
1540                                                         if check_dev "${dev}"
1541                                                         then
1542                                                                 return 0
1543                                                         fi
1544                                                 done
1545                                         fi
1546                                 fi
1547                         done
1548                         return 1
1549                         ;;
1550
1551                 removable)
1552                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1553                         do
1554                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1555                                 then
1556                                         for dev in $(subdevices "${sysblock}")
1557                                         do
1558                                                 if check_dev "${dev}"
1559                                                 then
1560                                                         return 0
1561                                                 fi
1562                                         done
1563                                 fi
1564                         done
1565                         return 1
1566                         ;;
1567
1568                 *)
1569                         if [ ! -z "${LIVE_MEDIA}" ]
1570                         then
1571                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1572                                 then
1573                                         return 0
1574                                 fi
1575                         fi
1576                         ;;
1577         esac
1578
1579         # or do the scan of block devices
1580         # prefer removable devices over non-removable devices, so scan them first
1581         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | egrep -v "/(loop|ram|dm-|fd)")
1582         do
1583                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1584                 then
1585                         removable_devices_to_scan="$removable_devices_to_scan $sysblock"
1586                 else
1587                         nonremovable_devices_to_scan="$nonremovable_devices_to_scan $sysblock"
1588                 fi
1589         done
1590         devices_to_scan="$removable_devices_to_scan $nonremovable_devices_to_scan"
1591
1592         for sysblock in $devices_to_scan
1593         do
1594                 devname=$(sys2dev "${sysblock}")
1595                 [ -e "$devname" ] || continue
1596                 fstype=$(get_fstype "${devname}")
1597
1598                 if /lib/udev/cdrom_id ${devname} > /dev/null
1599                 then
1600                         if check_dev "null" "${devname}"
1601                         then
1602                                 return 0
1603                         fi
1604                 elif is_nice_device "${sysblock}"
1605                 then
1606                         for dev in $(subdevices "${sysblock}")
1607                         do
1608                                 if check_dev "${dev}"
1609                                 then
1610                                         return 0
1611                                 fi
1612                         done
1613                 elif [ "${fstype}" = "squashfs" -o \
1614                         "${fstype}" = "btrfs" -o \
1615                         "${fstype}" = "ext2" -o \
1616                         "${fstype}" = "ext3" -o \
1617                         "${fstype}" = "ext4" -o \
1618                         "${fstype}" = "jffs2" ]
1619                 then
1620                         # This is an ugly hack situation, the block device has
1621                         # an image directly on it.  It's hopefully
1622                         # live-boot, so take it and run with it.
1623                         ln -s "${devname}" "${devname}.${fstype}"
1624                         echo "${devname}.${fstype}"
1625                         return 0
1626                 fi
1627         done
1628
1629         return 1
1630 }
1631
1632 set_usplash_timeout ()
1633 {
1634         if [ -x /sbin/usplash_write ]
1635         then
1636                 /sbin/usplash_write "TIMEOUT 120"
1637         else if [ -x /sbin/splashy_update ] ; then
1638                 /sbin/splashy_update "TIMEOUT 120"
1639         fi ; fi
1640 }
1641
1642 integrity_check ()
1643 {
1644         media_mountpoint="${1}"
1645
1646         log_begin_msg "Checking media integrity"
1647
1648         cd ${media_mountpoint}
1649         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1650         RC="${?}"
1651
1652         log_end_msg
1653
1654         if [ "${RC}" -eq 0 ]
1655         then
1656                 log_success_msg "Everything ok, will reboot in 10 seconds."
1657                 sleep 10
1658                 cd /
1659                 umount ${media_mountpoint}
1660                 sync
1661                 echo u > /proc/sysrq-trigger
1662                 echo b > /proc/sysrq-trigger
1663         else
1664                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1665         fi
1666 }
1667
1668 start_usplash_pulse ()
1669 {
1670         if [ -x /sbin/usplash_write ]
1671         then
1672                 /sbin/usplash_write "PULSELOGO"
1673         fi
1674 }
1675
1676 mountroot ()
1677 {
1678         if [ -x /scripts/local-top/cryptroot ]; then
1679             /scripts/local-top/cryptroot
1680         fi
1681
1682         exec 6>&1
1683         exec 7>&2
1684         exec > live.log
1685         exec 2>&1
1686         tail -f live.log >&7 &
1687         tailpid="${!}"
1688
1689         # Ensure 'panic' function is overridden
1690         . /scripts/live-functions
1691
1692         Arguments
1693
1694         set_usplash_timeout
1695         start_usplash_pulse
1696
1697         maybe_break live-premount
1698         log_begin_msg "Running /scripts/live-premount"
1699         run_scripts /scripts/live-premount
1700         log_end_msg
1701
1702         # Needed here too because some things (*cough* udev *cough*)
1703         # changes the timeout
1704
1705         set_usplash_timeout
1706
1707         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1708         then
1709                 if do_netmount
1710                 then
1711                         livefs_root="${mountpoint}"
1712                 else
1713                         panic "Unable to find a live file system on the network"
1714                 fi
1715         else
1716                 if [ -n "${ISCSI_PORTAL}" ]
1717                 then
1718                         do_iscsi && livefs_root="${mountpoint}"
1719                 elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1720                 then
1721                         # Do a local boot from hd
1722                         livefs_root=${ROOT}
1723                 else
1724                         if [ -x /usr/bin/memdiskfind ]
1725                         then
1726                                 MEMDISK=$(/usr/bin/memdiskfind)
1727
1728                                 if [ $? -eq 0 ]
1729                                 then
1730                                         # We found a memdisk, set up phram
1731                                         modprobe phram phram=memdisk,${MEMDISK}
1732
1733                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
1734                                         modprobe mtdblock
1735                                 fi
1736                         fi
1737
1738                         # Scan local devices for the image
1739                         i=0
1740                         while [ "$i" -lt 60 ]
1741                         do
1742                                 livefs_root=$(find_livefs ${i})
1743
1744                                 if [ -n "${livefs_root}" ]
1745                                 then
1746                                         break
1747                                 fi
1748
1749                                 sleep 1
1750                                 i="$(($i + 1))"
1751                         done
1752                 fi
1753         fi
1754
1755         if [ -z "${livefs_root}" ]
1756         then
1757                 panic "Unable to find a medium containing a live file system"
1758         fi
1759
1760         if [ "${INTEGRITY_CHECK}" ]
1761         then
1762                 integrity_check "${livefs_root}"
1763         fi
1764
1765         if [ "${TORAM}" ]
1766         then
1767                 live_dest="ram"
1768         elif [ "${TODISK}" ]
1769         then
1770                 live_dest="${TODISK}"
1771         fi
1772
1773         if [ "${live_dest}" ]
1774         then
1775                 log_begin_msg "Copying live media to ${live_dest}"
1776                 copy_live_to "${livefs_root}" "${live_dest}"
1777                 log_end_msg
1778         fi
1779
1780         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1781         # because the mountpoint is left behind in /proc/mounts, so let's get
1782         # rid of it when running from RAM
1783         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1784         then
1785           losetup -d /dev/loop0
1786           grep -q /isofrom /proc/mounts && umount /isofrom
1787         fi
1788
1789         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1790         then
1791                 setup_unionfs "${livefs_root}" "${rootmnt}"
1792         else
1793                 mac="$(get_mac)"
1794                 mac="$(echo ${mac} | sed 's/-//g')"
1795                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1796         fi
1797
1798         log_end_msg
1799
1800         # unionfs-fuse needs /dev to be bind-mounted for the duration of
1801         # live-bottom; udev's init script will take care of things after that
1802         if [ "${UNIONTYPE}" = unionfs-fuse ]
1803         then
1804                 mount -n -o bind /dev "${rootmnt}/dev"
1805         fi
1806
1807         # Move to the new root filesystem so that programs there can get at it.
1808         if [ ! -d /root/live/image ]
1809         then
1810                 mkdir -p /root/live/image
1811                 mount --move /live/image /root/live/image
1812         fi
1813
1814         maybe_break live-bottom
1815         log_begin_msg "Running /scripts/live-bottom\n"
1816
1817         run_scripts /scripts/live-bottom
1818         log_end_msg
1819
1820         if [ "${UNIONFS}" = unionfs-fuse ]
1821         then
1822                 umount "${rootmnt}/dev"
1823         fi
1824
1825         exec 1>&6 6>&-
1826         exec 2>&7 7>&-
1827         kill ${tailpid}
1828         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1829 }