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