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-sata_mv|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         elif echo ${sysfs_path} | grep -q "^/block/mtdblock"
 475         then
 476                 return 0
 477         fi
 478
 479         return 1
 480 }
 481
 482 copy_live_to ()
 483 {
 484         copyfrom="${1}"
 485         copytodev="${2}"
 486         copyto="${copyfrom}_swap"
 487
 488         if [ -z "${MODULETORAM}" ]
 489         then
 490                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
 491         else
 492                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 493
 494                 if [ -f "${MODULETORAMFILE}" ]
 495                 then
 496                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 497                 else
 498                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 499                         return 1
 500                 fi
 501         fi
 502
 503         if [ "${copytodev}" = "ram" ]
 504         then
 505                 # copying to ram:
 506                 freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 507                 mount_options="-o size=${size}k"
 508                 free_string="memory"
 509                 fstype="tmpfs"
 510                 dev="/dev/shm"
 511         else
 512                 # it should be a writable block device
 513                 if [ -b "${copytodev}" ]
 514                 then
 515                         dev="${copytodev}"
 516                         free_string="space"
 517                         fstype=$(get_fstype "${dev}")
 518                         freespace=$(fs_size "${dev}")
 519                 else
 520                         log_warning_msg "${copytodev} is not a block device."
 521                         return 1
 522                 fi
 523         fi
 524
 525         if [ "${freespace}" -lt "${size}" ]
 526         then
 527                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 528                 return 1
 529         fi
 530
 531         # begin copying (or uncompressing)
 532         mkdir "${copyto}"
 533         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 534         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 535
 536         if [ "${extension}" = "tgz" ]
 537         then
 538                 cd "${copyto}"
 539                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 540                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 541                 mount -r -o move "${copyto}" "${rootmnt}"
 542                 cd "${OLDPWD}"
 543         else
 544                 if [ -n "${MODULETORAMFILE}" ]
 545                 then
 546                         if [ -x /bin/rsync ]
 547                         then
 548                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
 549                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
 550                         else
 551                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 552                         fi
 553                 else
 554                         if [ -x /bin/rsync ]
 555                         then
 556                                 echo " * Copying whole medium to RAM" 1>/dev/console
 557                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
 558                         else
 559                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
 560                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
 561                                 if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
 562                                 then
 563                                         cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
 564                                 fi
 565                         fi
 566                 fi
 567
 568                 umount ${copyfrom}
 569                 mount -r -o move ${copyto} ${copyfrom}
 570         fi
 571
 572         rmdir ${copyto}
 573         return 0
 574 }
 575
 576 do_netsetup ()
 577 {
 578         modprobe -q af_packet # For DHCP
 579
 580         udevadm trigger
 581         udevadm settle
 582
 583         if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && \
 584            [ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
 585         then
 586
 587         # if ethdevice was not specified on the kernel command line
 588         # make sure we try to get a working network configuration
 589         # for *every* present network device (except for loopback of course)
 590         if [ -z "$ETHDEVICE" ] ; then
 591                 echo "If you want to boot from a specific device use bootoption ethdevice=..."
 592                 for device in /sys/class/net/*; do
 593                         dev=${device##*/} ;
 594                         if [ "$dev" != "lo" ] ; then
 595                                 ETHDEVICE="$ETHDEVICE $dev"
 596                         fi
 597                 done
 598         fi
 599
 600         # split args of ethdevice=eth0,eth1 into "eth0 eth1"
 601         for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
 602                 devlist="$devlist $device"
 603         done
 604
 605         [ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
 606         echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
 607
 608         # this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
 609         # an endless loop; iff execution fails give it two further tries, that's
 610         # why we use '$devlist $devlist $devlist' for the other for loop
 611         for dev in $devlist $devlist $devlist ; do
 612                 echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
 613                 ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
 614                 jobid=$!
 615                 sleep "$ETHDEV_TIMEOUT" ; sleep 1
 616                 if [ -r /proc/"$jobid"/status ] ; then
 617                         echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
 618                         kill -9 $jobid
 619                 fi
 620
 621                 # if configuration of device worked we should have an assigned
 622                 # IP address, iff so let's use the according as $DEVICE for later usage
 623                 # simple and primitive approach which seems to work fine
 624                 if ifconfig $dev | grep -q 'inet.*addr:' ; then
 625                         export DEVICE="$dev"
 626                         break
 627                 fi
 628         done
 629
 630         else
 631         ipconfig ${DEVICE} | tee /netboot.config
 632         fi
 633
 634         # source relevant ipconfig output
 635         OLDHOSTNAME=${HOSTNAME}
 636         . /tmp/net-${DEVICE}.conf
 637         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 638         export HOSTNAME
 639
 640         if [ -n "${DEVICE}" ]
 641         then
 642                 HWADDR="$(cat /sys/class/net/${DEVICE}/address)"
 643         fi
 644
 645         if [ ! -e "/etc/resolv.conf" ]
 646         then
 647                 echo "Creating /etc/resolv.conf"
 648
 649                 if [ -n "${DNSDOMAIN}" ]
 650                 then
 651                         echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
 652                         echo "search ${DNSDOMAIN}" > /etc/resolv.conf
 653                 fi
 654
 655                 for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1}
 656                 do
 657                         echo "nameserver $i" >> /etc/resolv.conf
 658                 done
 659         fi
 660
 661         # Check if we have a network device at all
 662         if ! ls /sys/class/net/"$DEVICE" > /dev/null 2>&1 && \
 663            ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
 664            ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
 665            ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
 666            ! ls /sys/class/net/ra0 > /dev/null 2>&1
 667         then
 668                 panic "No supported network device found, maybe a non-mainline driver is required."
 669         fi
 670 }
 671
 672 do_netmount()
 673 {
 674         do_netsetup
 675
 676         if [ "${NFSROOT}" = "auto" ]
 677         then
 678                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 679         fi
 680
 681         rc=1
 682
 683         if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] )
 684         then
 685                 do_httpmount
 686                 return $?
 687         fi
 688
 689         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 690         then
 691                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 692         fi
 693
 694         log_begin_msg "Trying netboot from ${NFSROOT}"
 695
 696         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 697         then
 698                 rc=0
 699         elif do_nfsmount
 700         then
 701                 NETBOOT="nfs"
 702                 export NETBOOT
 703                 rc=0
 704         fi
 705
 706         log_end_msg
 707         return ${rc}
 708 }
 709
 710 do_iscsi()
 711 {
 712         do_netsetup
 713         #modprobe ib_iser
 714         modprobe iscsi_tcp
 715         local debugopt=""
 716         [ "${DEBUG}" == "Yes" ] && debugopt="-d 8"
 717         #FIXME this name is supposed to be unique - some date + ifconfig hash?
 718         ISCSI_INITIATORNAME="iqn.1993-08.org.debian.live:01:$(echo "${HWADDR}" | sed -e s/://g)"
 719         export ISCSI_INITIATORNAME
 720         if [ -n "${ISCSI_SERVER}" ] ; then
 721                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_SERVER}" -p "${ISCSI_PORT}"
 722         else
 723                 iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_PORTAL}" -p 3260
 724         fi
 725         if [ $? != 0 ]
 726         then
 727                 panic "Failed to log into iscsi target"
 728         fi
 729         local host="$(ls -d /sys/class/scsi_host/host*/device/iscsi_host:host* \
 730                             /sys/class/scsi_host/host*/device/iscsi_host/host* | sed -e 's:/device.*::' -e 's:.*host::')"
 731         if [ -n "${host}" ]
 732         then
 733                 local devices=""
 734                 local i=0
 735                 while [ -z "${devices}" -a $i -lt 60 ]
 736                 do
 737                         sleep 1
 738                         devices="$(ls -d /sys/class/scsi_device/${host}*/device/block:* \
 739                                          /sys/class/scsi_device/${host}*/device/block/* | sed -e 's!.*[:/]!!')"
 740                         i=$(expr $i + 1)
 741                         echo -ne $i\\r
 742                 done
 743                 for dev in $devices
 744                 do
 745                         if check_dev "null" "/dev/$dev"
 746                         then
 747                                 NETBOOT="iscsi"
 748                                 export NETBOOT
 749                                 return 0;
 750                         fi
 751                 done
 752                 panic "Failed to locate a live device on iSCSI devices (tried: $devices)."
 753         else
 754                 panic "Failed to locate iSCSI host in /sys"
 755         fi
 756 }
 757
 758 do_httpmount ()
 759 {
 760         rc=1
 761
 762         for webfile in HTTPFS FTPFS FETCH
 763         do
 764                 local url="$(eval echo \"\$\{${webfile}\}\")"
 765                 local extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
 766
 767                 if [ -n "$url" ]
 768                 then
 769                         case "${extension}" in
 770                                 iso|squashfs|tgz|tar)
 771                                         if [ "${extension}" = "iso" ]
 772                                         then
 773                                                 mkdir -p "${alt_mountpoint}"
 774                                                 dest="${alt_mountpoint}"
 775                                         else
 776                                                 local dest="${mountpoint}/${LIVE_MEDIA_PATH}"
 777                                                 mount -t ramfs ram "${mountpoint}"
 778                                                 mkdir -p "${dest}"
 779                                         fi
 780                                         if [ "${webfile}" = "FETCH" ]
 781                                         then
 782                                                 case "$url" in
 783                                                         tftp*)
 784                                                                 ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
 785                                                                 rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
 786                                                                 lfile="$(basename $url)"
 787                                                                 log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
 788                                                                 tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
 789                                                         ;;
 790
 791                                                         *)
 792                                                                 log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
 793                                                                 wget "${url}" -O "${dest}/$(basename ${url})"
 794                                                                 ;;
 795                                                 esac
 796                                         else
 797                                                 log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
 798                                                 if [ "${webfile}" = "FTPFS" ]
 799                                                 then
 800                                                         FUSE_MOUNT="curlftpfs"
 801                                                         url="$(dirname ${url})"
 802                                                 else
 803                                                         FUSE_MOUNT="httpfs"
 804                                                 fi
 805                                                 modprobe fuse
 806                                                 $FUSE_MOUNT "${url}" "${dest}"
 807                                                 ROOT_PID="$(minips h -C "$FUSE_MOUNT" | { read x y ; echo "$x" ; } )"
 808                                         fi
 809                                         [ ${?} -eq 0 ] && rc=0
 810                                         [ "${extension}" = "tgz" ] && live_dest="ram"
 811                                         if [ "${extension}" = "iso" ]
 812                                         then
 813                                                 isoloop=$(setup_loop "${dest}/$(basename "${url}")" "loop" "/sys/block/loop*" "" '')
 814                                                 mount -t iso9660 "${isoloop}" "${mountpoint}"
 815                                                 rc=${?}
 816                                         fi
 817                                         break
 818                                         ;;
 819
 820                                 *)
 821                                         log_begin_msg "Unrecognized archive extension for ${url}"
 822                                         ;;
 823                         esac
 824                 fi
 825         done
 826
 827         if [ ${rc} != 0 ]
 828         then
 829                 if [ -d "${alt_mountpoint}" ]
 830                 then
 831                         umount "${alt_mountpoint}"
 832                         rmdir "${alt_mountpoint}"
 833                 fi
 834                 umount "${mountpoint}"
 835         elif [ "${webfile}"  != "FETCH" ] ; then
 836                 NETBOOT="${webfile}"
 837                 export NETBOOT
 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                 log_success_msg "Copying snapshot ${fromdev} to ${todir}..."
 903
 904                 # look for free mem
 905                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 906                 then
 907                         todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
 908                         freespace=$(df -k | awk '/'${todev}'/{print $4}')
 909                 else
 910                         freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
 911                 fi
 912
 913                 tomount="/mnt/tmpsnap"
 914
 915                 if [ ! -d "${tomount}" ]
 916                 then
 917                         mkdir -p "${tomount}"
 918                 fi
 919
 920                 fstype=$(get_fstype "${fromdev}")
 921
 922                 if [ -n "${fstype}" ]
 923                 then
 924                         # Copying stuff...
 925                         mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
 926                         cp -a "${tomount}"/* ${todir}
 927                         umount "${tomount}"
 928                 else
 929                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 930                 fi
 931
 932                 rmdir "${tomount}"
 933
 934                 if echo ${fromdev} | grep -qs loop
 935                 then
 936                         losetup -d "${fromdev}"
 937                 fi
 938
 939                 return 0
 940         else
 941                 log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 942                 return 1
 943         fi
 944 }
 945
 946 find_snap ()
 947 {
 948         # Look for ${snap_label}.* in block devices
 949         snap_label="${1}"
 950         black_listed_devices="${2}"
 951
 952         if [ "${PERSISTENT}" != "nofiles" ]
 953         then
 954                 # search for image files
 955                 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" "${black_listed_devices}")
 956         fi
 957
 958         if [ -z "${snapdata}" ]
 959         then
 960                 snapdata=$(find_cow_device "${snap_label}" "${black_listed_devices}")
 961         fi
 962         echo "${snapdata}"
 963 }
 964
 965 try_snap ()
 966 {
 967         # copy the contents of previously found snapshot to ${snap_mount}
 968         # and remember the device and filename for resync on exit in live-boot.init
 969
 970         snapdata="${1}"
 971         snap_mount="${2}"
 972         snap_type="${3}"
 973         snap_relpath="${4}"
 974
 975         if [ -z "${snap_relpath}" ]
 976         then
 977                 # root snapshot, default usage
 978                 snap_relpath="/"
 979         else
 980                 # relative snapshot (actually used just for "/home" snapshots)
 981                 snap_mount="${2}${snap_relpath}"
 982         fi
 983
 984         if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
 985         then
 986                 log_success_msg "found snapshot: ${snapdata}"
 987                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 988                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 989                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 990
 991                 if ! try_mount "${snapdev}" "${snapback}" "ro"
 992                 then
 993                         break
 994                 fi
 995
 996                 RES="0"
 997
 998                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
 999                 then
1000                         # squashfs, jffs2 or ext2/ext3/ext4 snapshot
1001                         dev=$(get_backing_device "${snapback}/${snapfile}")
1002
1003                         do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1004                         RES="$?"
1005                 else
1006                         # cpio.gz snapshot
1007
1008                         # Unfortunately klibc's cpio is incompatible with the
1009                         # rest of the world; everything else requires -u -d,
1010                         # while klibc doesn't implement them. Try to detect
1011                         # whether it's in use.
1012                         cpiopath="$(which cpio)" || true
1013                         if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
1014                         then
1015                                 cpioargs=
1016                         else
1017                                 cpioargs='--unconditional --make-directories'
1018                         fi
1019
1020                         if [ -s "${snapback}/${snapfile}" ]
1021                         then
1022                                 BEFOREDIR="$(pwd)"
1023                                 cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null
1024                                 RES="$?"
1025                                 cd "${BEFOREDIR}"
1026                         else
1027                                 log_warning_msg "${snapback}/${snapfile} is empty, adding it for sync on reboot."
1028                                 RES="0"
1029                         fi
1030
1031                         if [ "${RES}" != "0" ]
1032                         then
1033                                 log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
1034                         fi
1035                 fi
1036
1037                 umount "${snapback}" ||  log_warning_msg "failure to \"umount ${snapback}\""
1038
1039                 if [ "${RES}" != "0" ]
1040                 then
1041                         log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
1042                 fi
1043
1044         elif [ -b "${snapdata}" ]
1045         then
1046                 # Try to find if it could be a snapshot partition
1047                 dev="${snapdata}"
1048                 log_success_msg "found snapshot ${snap_type} device on ${dev}"
1049                 if echo "${dev}" | grep -qs loop
1050                 then
1051                         # strange things happens, user confused?
1052                         snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
1053                         snapfile=$(basename ${snaploop})
1054                         snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
1055                 else
1056                         snapdev="${dev}"
1057                 fi
1058
1059                 if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
1060                 then
1061                         log_warning_msg "Impossible to include the ${snap_type} Snapshot (i)"
1062                         return 1
1063                 else
1064                         if [ -n "${snapfile}" ]
1065                         then
1066                                 # it was a loop device, user confused
1067                                 umount ${snapdev}
1068                         fi
1069                 fi
1070         else
1071                 log_warning_msg "Impossible to include the ${snap_type} Snapshot (o)"
1072                 return 1
1073         fi
1074
1075         echo "export ${snap_type}SNAP=${snap_relpath}:${snapdev}:${snapfile}" >> snapshot.conf # for resync on reboot/halt
1076         return 0
1077 }
1078
1079 setup_unionfs ()
1080 {
1081         image_directory="${1}"
1082         rootmnt="${2}"
1083         addimage_directory="${3}"
1084
1085         case ${UNIONTYPE} in
1086                 aufs|unionfs)
1087                         modprobe -q -b ${UNIONTYPE}
1088
1089                         if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
1090                         then
1091                                 echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
1092                                 echo "This might be really slow."
1093
1094                                 UNIONTYPE="unionfs-fuse"
1095                         fi
1096                         ;;
1097         esac
1098
1099         if [ "${UNIONTYPE}" = unionfs-fuse ]
1100         then
1101                 modprobe fuse
1102         fi
1103
1104         # run-init can't deal with images in a subdir, but we're going to
1105         # move all of these away before it runs anyway.  No, we're not,
1106         # put them in / since move-mounting them into / breaks mono and
1107         # some other apps.
1108
1109         croot="/"
1110
1111         # Let's just mount the read-only file systems first
1112         rofsstring=""
1113         rofslist=""
1114
1115         if [ "${UNIONTYPE}" = "aufs" ]
1116         then
1117                 roopt="rr"
1118                 noxino_opt="noxino,"
1119         elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
1120         then
1121                 roopt="RO"
1122         else
1123                 roopt="ro"
1124         fi
1125
1126         if [ -z "${PLAIN_ROOT}" ]
1127         then
1128                 # Read image names from ${MODULE}.module if it exists
1129                 if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
1130                 then
1131                         for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
1132                         do
1133                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1134                         done
1135                 elif [ -e "${image_directory}/${MODULE}.module" ]
1136                 then
1137                         for IMAGE in $(cat ${image_directory}/${MODULE}.module)
1138                         do
1139                                 image_string="${image_string} ${image_directory}/${IMAGE}"
1140                         done
1141                 else
1142                         # ${MODULE}.module does not exist, create a list of images
1143                         for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1144                         do
1145                                 for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
1146                                 do
1147                                         if [ -e "${IMAGE}" ]
1148                                         then
1149                                                 image_string="${image_string} ${IMAGE}"
1150                                         fi
1151                                 done
1152                         done
1153
1154                         if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
1155                         then
1156                                 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
1157                                 do
1158                                         for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
1159                                         do
1160                                                 if [ -e "${IMAGE}" ]
1161                                                 then
1162                                                         image_string="${image_string} ${IMAGE}"
1163                                                 fi
1164                                         done
1165                                 done
1166                         fi
1167
1168                         # Now sort the list
1169                         image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
1170                 fi
1171
1172         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
1173
1174                 mkdir -p "${croot}"
1175
1176                 for image in ${image_string}
1177                 do
1178                         imagename=$(basename "${image}")
1179
1180                         export image devname
1181                         maybe_break live-realpremount
1182                         log_begin_msg "Running /scripts/live-realpremount"
1183                         run_scripts /scripts/live-realpremount
1184                         log_end_msg
1185
1186                         if [ -d "${image}" ]
1187                         then
1188                                 # it is a plain directory: do nothing
1189                                 rofsstring="${image}=${roopt}:${rofsstring}"
1190                                 rofslist="${image} ${rofslist}"
1191                         elif [ -f "${image}" ]
1192                         then
1193                                 if losetup --help 2>&1 | grep -q -- "-r\b"
1194                                 then
1195                                         backdev=$(get_backing_device "${image}" "-r")
1196                                 else
1197                                         backdev=$(get_backing_device "${image}")
1198                                 fi
1199                                 fstype=$(get_fstype "${backdev}")
1200
1201                                 if [ "${fstype}" = "unknown" ]
1202                                 then
1203                                         panic "Unknown file system type on ${backdev} (${image})"
1204                                 fi
1205
1206                                 if [ -z "${fstype}" ]
1207                                 then
1208                                         fstype="${imagename##*.}"
1209                                         log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
1210                                 fi
1211
1212                                 if [ "${UNIONTYPE}" != "unionmount" ]
1213                                 then
1214                                         mpoint="${croot}/${imagename}"
1215                                         rofsstring="${mpoint}=${roopt}:${rofsstring}" && rofslist="${mpoint} ${rofslist}"
1216                                 else
1217                                         mpoint="${rootmnt}"
1218                                 fi
1219                                 mkdir -p "${mpoint}"
1220                                 log_begin_msg "Mounting \"${image}\" on \"${mpoint}\" via \"${backdev}\""
1221                                 mount -t "${fstype}" -o ro,noatime "${backdev}" "${mpoint}" || panic "Can not mount ${backdev} (${image}) on ${mpoint}"
1222                                 log_end_msg
1223                         fi
1224                 done
1225         else
1226                 # we have a plain root system
1227                 mkdir -p "${croot}/filesystem"
1228                 log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
1229                 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}"
1230                 # probably broken:
1231                 mount -o bind ${croot}/filesystem $mountpoint
1232                 log_end_msg
1233         fi
1234
1235         rofsstring=${rofsstring%:}
1236
1237         mkdir -p /cow
1238
1239         # Looking for "${root_persistence}" device or file
1240         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1241         then
1242                 if [ -z "${QUICKUSBMODULES}" ]
1243                 then
1244                         # Load USB modules
1245                         num_block=$(ls -l /sys/block | wc -l)
1246                         for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1247                         do
1248                                 modprobe -q -b ${module}
1249                         done
1250
1251                         udevadm trigger
1252                         udevadm settle
1253
1254                         # For some reason, udevsettle does not block in this scenario,
1255                         # so we sleep for a little while.
1256                         #
1257                         # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1258                         for timeout in 5 4 3 2 1
1259                         do
1260                                 sleep 1
1261
1262                                 if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1263                                 then
1264                                         break
1265                                 fi
1266                         done
1267                 fi
1268
1269                 # search for label and files (this could be hugely optimized)
1270                 cowprobe=$(find_cow_device "${root_persistence}")
1271                 if [ -b "${cowprobe}" ]
1272                 then
1273                         # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
1274                         # makes sense to have both persistence for /cow and /home mounted, maybe also with
1275                         # snapshots to be sure to really store some e.g key config files,
1276                         # but not on the same media
1277                         blacklistdev="${cowprobe}"
1278                         PERSISTENCE_IS_ON="1"
1279                         export PERSISTENCE_IS_ON
1280                 fi
1281                 # homecow just mount something on /home, this should be generalized some way
1282                 homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}")
1283                 if [ -b "${homecow}" ]
1284                 then
1285                         PERSISTENCE_IS_ON="1"
1286                         export PERSISTENCE_IS_ON
1287                 fi
1288                 root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
1289                 # This second type should be removed when snapshot will get smarter,
1290                 # hence when "/etc/live-snapshot*list" will be supported also by
1291                 # ext2|ext3|ext4|jffs2 snapshot types.
1292                 home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
1293
1294                 if [ -b "${cowprobe}" ]
1295                 then
1296                         cowdevice=${cowprobe}
1297                         cow_fstype=$(get_fstype "${cowprobe}")
1298                         cow_mountopt="rw,noatime"
1299
1300                         if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
1301                         then
1302                                 fsck -y ${cowdevice}
1303                         fi
1304                 else
1305                         log_warning_msg "Unable to find the persistent medium"
1306                         cowdevice="tmpfs"
1307                         cow_fstype="tmpfs"
1308                         cow_mountopt="rw,noatime,mode=755"
1309                 fi
1310         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1311         then
1312                 # check if there are any nfs options
1313                 if echo ${NFS_COW}|grep -q ','
1314                 then
1315                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1316                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1317                 else
1318                         nfs_cow_opts="-o nolock"
1319                         nfs_cow=${NFS_COW}
1320                 fi
1321                 mac="$(get_mac)"
1322                 if [ -n "${mac}" ]
1323                 then
1324                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1325                         cow_fstype="nfs"
1326                 else
1327                         panic "unable to determine mac address"
1328                 fi
1329         else
1330                 cowdevice="tmpfs"
1331                 cow_fstype="tmpfs"
1332                 cow_mountopt="rw,noatime,mode=755"
1333         fi
1334
1335         if [ "${UNIONTYPE}" != "unionmount" ]
1336         then
1337
1338         if [ "${cow_fstype}" = "nfs" ]
1339         then
1340                 log_begin_msg \
1341                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1342                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1343                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1344         else
1345                 mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
1346                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1347         fi
1348         fi
1349
1350         rofscount=$(echo ${rofslist} |wc -w)
1351
1352         if [ -n "${EXPOSED_ROOT}" ]
1353         then
1354                 if [ ${rofscount} -ne 1 ]
1355                 then
1356                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1357                 fi
1358                 exposedrootfs=${rofslist%% }
1359
1360                 mount --bind ${exposedrootfs} ${rootmnt} || \
1361                         panic "bind mount of ${exposedrootfs} failed"
1362
1363                 if [ -z "${SKIP_UNION_MOUNTS}" ]
1364                 then
1365                         cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool /home /var/lib/live'
1366                 else
1367                         cow_dirs=''
1368                 fi
1369
1370                 for dir in ${cow_dirs}; do
1371                         mkdir -p /cow${dir}
1372
1373                         case "${UNIONTYPE}" in
1374                                 unionfs-fuse)
1375                                         (ulimit -n 16384; unionfs-fuse -o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid /cow=RW:${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}")
1376                                         mkdir -p /dev/.initramfs/varrun
1377                                         pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1378                                         ;;
1379
1380                                 *)
1381                                         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}${dir}=ro"
1382                                         ;;
1383                         esac
1384                 done
1385         else
1386                 case "${UNIONTYPE}" in
1387                         unionfs-fuse)
1388                                 (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}")
1389                                 mkdir -p /dev/.initramfs/varrun
1390                                 pidof unionfs-fuse >> /dev/.initramfs/varrun/sendsigs.omit || true
1391                                 ;;
1392
1393                         unionmount)
1394                                 mount_full -t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice} "${rootmnt}" || panic "${UNIONTYPE} ${cowdevice} on ${rootmnt} failed with option noatime,union,${cow_mountopt}"
1395                                 ;;
1396
1397                         *)
1398                                 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:${rofsstring}"
1399                                 ;;
1400                 esac
1401         fi
1402
1403         # Correct the permissions of /:
1404         chmod 0755 "${rootmnt}"
1405
1406         # tmpfs file systems
1407         touch /etc/fstab
1408         mkdir -p "${rootmnt}/live"
1409         mount -t tmpfs tmpfs ${rootmnt}/live
1410
1411         # Adding other custom mounts
1412         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1413         then
1414                 # directly mount /home
1415                 # FIXME: add a custom mounts configurable system
1416
1417                 if [ -b "${homecow}" ]
1418                 then
1419                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1420                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1421                 else
1422                         log_warning_msg "Unable to find the persistent home medium"
1423                 fi
1424
1425                 # Look for other snapshots to copy in
1426                 try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
1427                 # This second type should be removed when snapshot grow smarter
1428                 try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home"
1429         fi
1430
1431         if [ -n "${SHOWMOUNTS}" ]
1432         then
1433                 for d in ${rofslist}
1434                 do
1435                         mkdir -p "${rootmnt}/live/${d##*/}"
1436
1437                         case d in
1438                                 *.dir)
1439                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1440                                         ;;
1441
1442                                 *)
1443                                         case "${UNIONTYPE}" in
1444                                                 unionfs-fuse)
1445                                                         mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1446                                                         ;;
1447
1448                                                 *)
1449                                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1450                                                         ;;
1451                                         esac
1452                                         ;;
1453                         esac
1454                 done
1455         fi
1456
1457         # shows cow fs on /cow for use by live-snapshot
1458         mkdir -p "${rootmnt}/live/cow"
1459         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 ${rootmnt}/live/cow"
1460 }
1461
1462 check_dev ()
1463 {
1464         sysdev="${1}"
1465         devname="${2}"
1466         skip_uuid_check="${3}"
1467
1468         # support for fromiso=.../isofrom=....
1469         if [ -n "$FROMISO" ]
1470         then
1471                 ISO_DEVICE=$(dirname $FROMISO)
1472                 if ! [ -b $ISO_DEVICE ]
1473                 then
1474                         # to support unusual device names like /dev/cciss/c0d0p1
1475                         # as well we have to identify the block device name, let's
1476                         # do that for up to 15 levels
1477                         i=15
1478                         while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
1479                         do
1480                                 ISO_DEVICE=$(dirname ${ISO_DEVICE})
1481                                 [ -b "$ISO_DEVICE" ] && break
1482                                 i=$(($i -1))
1483                         done
1484                 fi
1485
1486                 if [ "$ISO_DEVICE" = "/" ]
1487                 then
1488                         echo "Warning: device for bootoption isofrom= ($FROMISO) not found.">>/live.log
1489                 else
1490                         mkdir /isofrom
1491                         mount -t auto "$ISO_DEVICE" /isofrom
1492                         ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
1493                         loopdevname=$(setup_loop "/isofrom/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
1494                         devname="${loopdevname}"
1495                 fi
1496         fi
1497
1498         if [ -z "${devname}" ]
1499         then
1500                 devname=$(sys2dev "${sysdev}")
1501         fi
1502
1503         if [ -d "${devname}" ]
1504         then
1505                 mount -o bind "${devname}" $mountpoint || continue
1506
1507                 if is_live_path $mountpoint
1508                 then
1509                         echo $mountpoint
1510                         return 0
1511                 else
1512                         umount $mountpoint
1513                 fi
1514         fi
1515         [ -e "$devname" ] || continue
1516
1517         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1518         then
1519                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1520                 devname="${loopdevname}"
1521         fi
1522
1523         fstype=$(get_fstype "${devname}")
1524
1525         if is_supported_fs ${fstype}
1526         then
1527                 devuid=$(blkid -o value -s UUID "$devname")
1528                 [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
1529                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1530                 [ -n "$devuid" ] && echo "$devuid" >> $tried
1531
1532                 if is_live_path ${mountpoint} && \
1533                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1534                 then
1535                         echo ${mountpoint}
1536                         return 0
1537                 else
1538                         umount ${mountpoint}
1539                 fi
1540         fi
1541
1542         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1543         then
1544                 losetup -d "${loopdevname}"
1545         fi
1546
1547         return 1
1548 }
1549
1550 find_livefs ()
1551 {
1552         timeout="${1}"
1553
1554         # don't start autodetection before timeout has expired
1555         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1556         then
1557                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1558                 then
1559                         return 1
1560                 fi
1561         fi
1562
1563         # first look at the one specified in the command line
1564         case "${LIVE_MEDIA}" in
1565                 removable-usb)
1566                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1567                         do
1568                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1569                                 then
1570                                         if readlink ${sysblock} | grep -q usb ||
1571                                            readlink ${sysblock}/device | grep -q usb # linux < 2.6.29
1572                                         then
1573                                                 for dev in $(subdevices "${sysblock}")
1574                                                 do
1575                                                         if check_dev "${dev}"
1576                                                         then
1577                                                                 return 0
1578                                                         fi
1579                                                 done
1580                                         fi
1581                                 fi
1582                         done
1583                         return 1
1584                         ;;
1585
1586                 removable)
1587                         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1588                         do
1589                                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1590                                 then
1591                                         for dev in $(subdevices "${sysblock}")
1592                                         do
1593                                                 if check_dev "${dev}"
1594                                                 then
1595                                                         return 0
1596                                                 fi
1597                                         done
1598                                 fi
1599                         done
1600                         return 1
1601                         ;;
1602
1603                 *)
1604                         if [ ! -z "${LIVE_MEDIA}" ]
1605                         then
1606                                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1607                                 then
1608                                         return 0
1609                                 fi
1610                         fi
1611                         ;;
1612         esac
1613
1614         # or do the scan of block devices
1615         # prefer removable devices over non-removable devices, so scan them first
1616         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | egrep -v "/(loop|ram|dm-|fd)")
1617         do
1618                 if [ "$(cat ${sysblock}/removable)" = "1" ]
1619                 then
1620                         removable_devices_to_scan="$removable_devices_to_scan $sysblock"
1621                 else
1622                         nonremovable_devices_to_scan="$nonremovable_devices_to_scan $sysblock"
1623                 fi
1624         done
1625         devices_to_scan="$removable_devices_to_scan $nonremovable_devices_to_scan"
1626
1627         for sysblock in $devices_to_scan
1628         do
1629                 devname=$(sys2dev "${sysblock}")
1630                 [ -e "$devname" ] || continue
1631                 fstype=$(get_fstype "${devname}")
1632
1633                 if /lib/udev/cdrom_id ${devname} > /dev/null
1634                 then
1635                         if check_dev "null" "${devname}"
1636                         then
1637                                 return 0
1638                         fi
1639                 elif is_nice_device "${sysblock}"
1640                 then
1641                         for dev in $(subdevices "${sysblock}")
1642                         do
1643                                 if check_dev "${dev}"
1644                                 then
1645                                         return 0
1646                                 fi
1647                         done
1648                 elif [ "${fstype}" = "squashfs" -o \
1649                         "${fstype}" = "btrfs" -o \
1650                         "${fstype}" = "ext2" -o \
1651                         "${fstype}" = "ext3" -o \
1652                         "${fstype}" = "ext4" -o \
1653                         "${fstype}" = "jffs2" ]
1654                 then
1655                         # This is an ugly hack situation, the block device has
1656                         # an image directly on it.  It's hopefully
1657                         # live-boot, so take it and run with it.
1658                         ln -s "${devname}" "${devname}.${fstype}"
1659                         echo "${devname}.${fstype}"
1660                         return 0
1661                 fi
1662         done
1663
1664         return 1
1665 }
1666
1667 integrity_check ()
1668 {
1669         media_mountpoint="${1}"
1670
1671         log_begin_msg "Checking media integrity"
1672
1673         cd ${media_mountpoint}
1674         /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
1675         RC="${?}"
1676
1677         log_end_msg
1678
1679         if [ "${RC}" -eq 0 ]
1680         then
1681                 log_success_msg "Everything ok, will reboot in 10 seconds."
1682                 sleep 10
1683                 cd /
1684                 umount ${media_mountpoint}
1685                 sync
1686                 echo u > /proc/sysrq-trigger
1687                 echo b > /proc/sysrq-trigger
1688         else
1689                 panic "Not ok, a media defect is likely, switch to VT8 for details."
1690         fi
1691 }
1692
1693 mountroot ()
1694 {
1695         if [ -x /scripts/local-top/cryptroot ]; then
1696             /scripts/local-top/cryptroot
1697         fi
1698
1699         exec 6>&1
1700         exec 7>&2
1701         exec > live.log
1702         exec 2>&1
1703         tail -f live.log >&7 &
1704         tailpid="${!}"
1705
1706         # Ensure 'panic' function is overridden
1707         . /scripts/live-functions
1708
1709         Arguments
1710
1711         maybe_break live-premount
1712         log_begin_msg "Running /scripts/live-premount"
1713         run_scripts /scripts/live-premount
1714         log_end_msg
1715
1716         # Needed here too because some things (*cough* udev *cough*)
1717         # changes the timeout
1718
1719         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
1720         then
1721                 if do_netmount
1722                 then
1723                         livefs_root="${mountpoint}"
1724                 else
1725                         panic "Unable to find a live file system on the network"
1726                 fi
1727         else
1728                 if [ -n "${ISCSI_PORTAL}" ]
1729                 then
1730                         do_iscsi && livefs_root="${mountpoint}"
1731                 elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1732                 then
1733                         # Do a local boot from hd
1734                         livefs_root=${ROOT}
1735                 else
1736                         if [ -x /usr/bin/memdiskfind ]
1737                         then
1738                                 MEMDISK=$(/usr/bin/memdiskfind)
1739
1740                                 if [ $? -eq 0 ]
1741                                 then
1742                                         # We found a memdisk, set up phram
1743                                         modprobe phram phram=memdisk,${MEMDISK}
1744
1745                                         # Load mtdblock, the memdisk will be /dev/mtdblock0
1746                                         modprobe mtdblock
1747                                 fi
1748                         fi
1749
1750                         # Scan local devices for the image
1751                         i=0
1752                         while [ "$i" -lt 60 ]
1753                         do
1754                                 livefs_root=$(find_livefs ${i})
1755
1756                                 if [ -n "${livefs_root}" ]
1757                                 then
1758                                         break
1759                                 fi
1760
1761                                 sleep 1
1762                                 i="$(($i + 1))"
1763                         done
1764                 fi
1765         fi
1766
1767         if [ -z "${livefs_root}" ]
1768         then
1769                 panic "Unable to find a medium containing a live file system"
1770         fi
1771
1772         if [ "${INTEGRITY_CHECK}" ]
1773         then
1774                 integrity_check "${livefs_root}"
1775         fi
1776
1777         if [ "${TORAM}" ]
1778         then
1779                 live_dest="ram"
1780         elif [ "${TODISK}" ]
1781         then
1782                 live_dest="${TODISK}"
1783         fi
1784
1785         if [ "${live_dest}" ]
1786         then
1787                 log_begin_msg "Copying live media to ${live_dest}"
1788                 copy_live_to "${livefs_root}" "${live_dest}"
1789                 log_end_msg
1790         fi
1791
1792         # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
1793         # because the mountpoint is left behind in /proc/mounts, so let's get
1794         # rid of it when running from RAM
1795         if [ -n "$FROMISO" ] && [ "${TORAM}" ]
1796         then
1797           losetup -d /dev/loop0
1798           grep -q /isofrom /proc/mounts && umount /isofrom
1799         fi
1800
1801         if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
1802         then
1803                 setup_unionfs "${livefs_root}" "${rootmnt}"
1804         else
1805                 mac="$(get_mac)"
1806                 mac="$(echo ${mac} | sed 's/-//g')"
1807                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1808         fi
1809
1810
1811         if [ -n "${ROOT_PID}" ] ; then
1812                 echo "${ROOT_PID}" > "${rootmnt}"/live/root.pid
1813         fi
1814
1815         log_end_msg
1816
1817         # unionfs-fuse needs /dev to be bind-mounted for the duration of
1818         # live-bottom; udev's init script will take care of things after that
1819         if [ "${UNIONTYPE}" = unionfs-fuse ]
1820         then
1821                 mount -n -o bind /dev "${rootmnt}/dev"
1822         fi
1823
1824         # Move to the new root filesystem so that programs there can get at it.
1825         if [ ! -d /root/live/image ]
1826         then
1827                 mkdir -p /root/live/image
1828                 mount --move /live/image /root/live/image
1829         fi
1830
1831         # aufs2 in kernel versions around 2.6.33 has a regression:
1832         # directories can't be accessed when read for the first the time,
1833         # causing a failure for example when accessing /var/lib/fai
1834         # when booting FAI, this simple workaround solves it
1835         ls /root/* >/dev/null 2>&1
1836
1837         # copy snapshot configuration if exists
1838         if [ -f snapshot.conf ]
1839         then
1840                 log_begin_msg "Copying snapshot.conf to ${rootmnt}/etc/live/boot.d"
1841                 if [ ! -d "${rootmnt}/etc/live/boot.d" ]
1842                 then
1843                         mkdir -p "${rootmnt}/etc/live/boot.d"
1844                 fi
1845                 cp snapshot.conf "${rootmnt}/etc/live/boot.d/"
1846                 log_end_msg
1847         fi
1848
1849         maybe_break live-bottom
1850         log_begin_msg "Running /scripts/live-bottom\n"
1851
1852         run_scripts /scripts/live-bottom
1853         log_end_msg
1854
1855         if [ "${UNIONFS}" = unionfs-fuse ]
1856         then
1857                 umount "${rootmnt}/dev"
1858         fi
1859
1860         exec 1>&6 6>&-
1861         exec 2>&7 7>&-
1862         kill ${tailpid}
1863         [ -w "${rootmnt}/var/log/" ] && cp live.log "${rootmnt}/var/log/" 2>/dev/null
1864 }