scripts/live

   1 #!/bin/sh
   2
   3 # set -e
   4
   5 export PATH="/root/usr/bin:/root/usr/sbin:/root/bin:/root/sbin:/usr/bin:/usr/sbin:/bin:/sbin"
   6
   7 echo "/root/lib" >> /etc/ld.so.conf
   8 echo "/root/usr/lib" >> /etc/ld.so.conf
   9
  10 mountpoint="/live/image"
  11 LIVE_MEDIA_PATH="live"
  12
  13 root_persistence="live-rw"
  14 home_persistence="home-rw"
  15 root_snapshot_label="live-sn"
  16 home_snapshot_label="home-sn"
  17
  18 USERNAME="user"
  19 USERFULLNAME="Live user"
  20 HOSTNAME="host"
  21
  22 mkdir -p "${mountpoint}"
  23
  24 [ -f /etc/live.conf ] && . /etc/live.conf
  25 export USERNAME USERFULLNAME HOSTNAME
  26
  27 . /scripts/live-helpers
  28
  29 if [ ! -f /live.vars ]
  30 then
  31         touch /live.vars
  32 fi
  33
  34 Arguments ()
  35 {
  36         PRESEEDS=""
  37
  38         for ARGUMENT in $(cat /proc/cmdline)
  39         do
  40                 case "${ARGUMENT}" in
  41                         access=*)
  42                                 ACCESS="${ARGUMENT#access=}"
  43                                 export ACCESS
  44                                 ;;
  45
  46                         console=*)
  47                                 DEFCONSOLE="${ARGUMENT#*=}"
  48                                 export DEFCONSOLE
  49                                 ;;
  50
  51                         debug)
  52                                 DEBUG="Yes"
  53                                 export DEBUG
  54
  55                                 set -x
  56                                 ;;
  57
  58                         fetch=*)
  59                                 FETCH="${ARGUMENT#fetch=}"
  60                                 export FETCH
  61                                 ;;
  62
  63                         hook=*)
  64                                 HOOK="${ARGUMENT#hook=}"
  65                                 export HOOK
  66                                 ;;
  67
  68                         hostname=*)
  69                                 HOSTNAME="${ARGUMENT#hostname=}"
  70                                 LIVECONF="changed"
  71                                 export HOSTNAME LIVECONF
  72                                 ;;
  73
  74                         username=*)
  75                                 USERNAME="${ARGUMENT#username=}"
  76                                 LIVECONF="changed"
  77                                 export USERNAME LIVECONF
  78                                 ;;
  79
  80                         userfullname=*)
  81                                 USERFULLNAME="${ARGUMENT#userfullname=}"
  82                                 LIVECONF="changed"
  83                                 export USERFULLNAME LIVECONF
  84                                 ;;
  85
  86                         ignore_uuid)
  87                                 IGNORE_UUID="Yes"
  88                                 export IGNORE_UUID
  89                                 ;;
  90
  91                         ip=*)
  92                                 STATICIP="${ARGUMENT#ip=}"
  93
  94                                 if [ -z "${STATICIP}" ]
  95                                 then
  96                                         STATICIP="frommedia"
  97                                 fi
  98
  99                                 export STATICIP
 100                                 ;;
 101
 102                         keyb=*|kbd-chooser/method=*)
 103                                 KBD="${ARGUMENT#*=}"
 104                                 export KBD
 105                                 ;;
 106
 107                         klayout=*|console-setup/layoutcode=*)
 108                                 KLAYOUT="${ARGUMENT#*=}"
 109                                 export KLAYOUT
 110                                 ;;
 111
 112                         kvariant=*|console-setup/variantcode=*)
 113                                 KVARIANT="${ARGUMENT#*=}"
 114                                 export KVARIANT
 115                                 ;;
 116
 117                         kmodel=*|console-setup/modelcode=*)
 118                                 KMODEL="${ARGUMENT#*=}"
 119                                 export KMODEL
 120                                 ;;
 121
 122                         koptions=*)
 123                                 KOPTIONS="${ARGUMENT#koptions=}"
 124                                 export KOPTIONS
 125                                 ;;
 126
 127                         live-getty)
 128                                 LIVE_GETTY="1"
 129                                 export LIVE_GETTY
 130                                 ;;
 131
 132                         live-media=*|bootfrom=*)
 133                                 LIVE_MEDIA="${ARGUMENT#*=}"
 134                                 export LIVE_MEDIA
 135                                 ;;
 136
 137                         live-media-encryption=*|encryption=*)
 138                                 LIVE_MEDIA_ENCRYPTION="${ARGUMENT#*=}"
 139                                 export LIVE_MEDIA_ENCRYPTION
 140                                 ;;
 141
 142                         live-media-offset=*)
 143                                 LIVE_MEDIA_OFFSET="${ARGUMENT#live-media-offset=}"
 144                                 export LIVE_MEDIA_OFFSET
 145                                 ;;
 146
 147                         live-media-path=*)
 148                                 LIVE_MEDIA_PATH="${ARGUMENT#live-media-path=}"
 149                                 export LIVE_MEDIA_PATH
 150                                 ;;
 151
 152                         live-media-timeout=*)
 153                                 LIVE_MEDIA_TIMEOUT="${ARGUMENT#live-media-timeout=}"
 154                                 export LIVE_MEDIA_TIMEOUT
 155                                 ;;
 156
 157                         locale=*|debian-installer/locale=*)
 158                                 LOCALE="${ARGUMENT#*=}"
 159                                 export LOCALE
 160                                 ;;
 161
 162                         module=*)
 163                                 MODULE="${ARGUMENT#module=}"
 164                                 export MODULE
 165                                 ;;
 166
 167                         netboot=*)
 168                                 NETBOOT="${ARGUMENT#netboot=}"
 169                                 export NETBOOT
 170                                 ;;
 171
 172                         nfsopts=*)
 173                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 174                                 export NFSOPTS
 175                                 ;;
 176
 177                         nfscow=*)
 178                                 NFS_COW="${ARGUMENT#nfscow=}"
 179                                 export NFS_COW
 180                                 ;;
 181
 182                         noaccessibility)
 183                                 NOACCESSIBILITY="Yes"
 184                                 export NOACCESSIBILITY
 185                                 ;;
 186
 187                         noapparmor)
 188                                 NOAPPARMOR="Yes"
 189                                 export NOAPPARMOR
 190                                 ;;
 191
 192                         noaptcdrom)
 193                                 NOAPTCDROM="Yes"
 194                                 export NOAPTCDROM
 195                                 ;;
 196
 197                         noautologin)
 198                                 NOAUTOLOGIN="Yes"
 199                                 export NOAUTOLOGIN
 200                                 ;;
 201
 202                         noxautologin)
 203                                 NOXAUTOLOGIN="Yes"
 204                                 export NOXAUTOLOGIN
 205                                 ;;
 206
 207                         noconsolekeyboard)
 208                                 NOCONSOLEKEYBOARD="Yes"
 209                                 export NOCONSOLEKEYBOARD
 210                                 ;;
 211
 212                         nofastboot)
 213                                 NOFASTBOOT="Yes"
 214                                 export NOFASTBOOT
 215                                 ;;
 216
 217                         nofstab)
 218                                 NOFSTAB="Yes"
 219                                 export NOFSTAB
 220                                 ;;
 221
 222                         nognomepanel)
 223                                 NOGNOMEPANEL="Yes"
 224                                 export NOGNOMEPANEL
 225                                 ;;
 226
 227                         nohosts)
 228                                 NOHOSTS="Yes"
 229                                 export NOHOSTS
 230                                 ;;
 231
 232                         nokpersonalizer)
 233                                 NOKPERSONALIZER="Yes"
 234                                 export NOKPERSONALIZER
 235                                 ;;
 236
 237                         nolanguageselector)
 238                                 NOLANGUAGESELECTOR="Yes"
 239                                 export NOLANGUAGESELECTOR
 240                                 ;;
 241
 242                         nolocales)
 243                                 NOLOCALES="Yes"
 244                                 export NOLOCALES
 245                                 ;;
 246
 247                         nonetworking)
 248                                 NONETWORKING="Yes"
 249                                 export NONETWORKING
 250                                 ;;
 251
 252                         nopowermanagement)
 253                                 NOPOWERMANAGEMENT="Yes"
 254                                 export NOPOWERMANAGEMENT
 255                                 ;;
 256
 257                         noprogramcrashes)
 258                                 NOPROGRAMCRASHES="Yes"
 259                                 export NOPROGRAMCRASHES
 260                                 ;;
 261
 262                         norestrictedmanager)
 263                                 NORESTRICTEDMANAGER="Yes"
 264                                 export NORESTRICTEDMANAGER
 265                                 ;;
 266
 267                         nosudo)
 268                                 NOSUDO="Yes"
 269                                 export NOSUDO
 270                                 ;;
 271
 272                         noswap)
 273                                 NOSWAP="Yes"
 274                                 export NOSWAP
 275                                 ;;
 276
 277                         noupdatenotifier)
 278                                 NOUPDATENOTIFIER="Yes"
 279                                 export NOUPDATENOTIFIER
 280                                 ;;
 281
 282                         nouser)
 283                                 NOUSER="Yes"
 284                                 export NOUSER
 285                                 ;;
 286
 287                         noxautoconfig)
 288                                 NOXAUTOCONFIG="Yes"
 289                                 export NOXAUTOCONFIG
 290                                 ;;
 291
 292                         noxscreensaver)
 293                                 NOXSCREENSAVER="Yes"
 294                                 export NOXSCREENSAVER
 295                                 ;;
 296
 297                         persistent)
 298                                 PERSISTENT="Yes"
 299                                 export PERSISTENT
 300                                 ;;
 301
 302                         nopersistent)
 303                                 NOPERSISTENT="Yes"
 304                                 export NOPERSISTENT
 305                                 ;;
 306
 307                         preseed/file=*|file=*)
 308                                 LOCATION="${ARGUMENT#*=}"
 309                                 export LOCATION
 310                                 ;;
 311
 312                         nopreseed)
 313                                 NOPRESEED="Yes"
 314                                 export NOPRESEED
 315                                 ;;
 316
 317                         url=*)
 318                                 location="${ARGUMENT#url=}"
 319
 320                                 mount -n -o bind /sys /root/sys
 321                                 mount -n -o bind /proc /root/proc
 322                                 mount -n -o bind /dev /root/dev
 323
 324                                 mkdir -p /root/var/run/network
 325                                 chroot /root dhclient eth0
 326                                 chroot /root wget -P /tmp "${location}"
 327                                 chroot /root ifconfig eth0 down
 328
 329                                 umount /root/sys
 330                                 umount /root/proc
 331                                 umount /root/dev
 332
 333                                 LOCATION="/tmp/$(basename "${location}")"
 334                                 ;;
 335
 336                         */*=*)
 337                                 question="${ARGUMENT%%=*}"
 338                                 value="${ARGUMENT#*=}"
 339                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 340                                 export PRESEEDS
 341                                 ;;
 342
 343                         showmounts)
 344                                 SHOWMOUNTS="Yes"
 345                                 export SHOWMOUNTS
 346                                 ;;
 347
 348                         textonly)
 349                                 TEXTONLY="Yes"
 350                                 export TEXTONLY
 351                                 ;;
 352
 353                         timezone=*)
 354                                 TIMEZONE="${ARGUMENT#timezone=}"
 355                                 export TIMEZONE
 356                                 ;;
 357
 358                         notimezone)
 359                                 NOTIMEZONE="Yes"
 360                                 export NOTIMEZONE
 361                                 ;;
 362
 363                         todisk=*)
 364                                 TODISK="${ARGUMENT#todisk=}"
 365                                 export TODISK
 366                                 ;;
 367
 368                         toram)
 369                                 TORAM="Yes"
 370                                 export TORAM
 371                                 ;;
 372
 373                         toram=*)
 374                                 TORAM="Yes"
 375                                 MODULETORAM="${ARGUMENT#toram=}"
 376                                 export TORAM MODULETORAM
 377                                 ;;
 378
 379                         exposedroot)
 380                                 EXPOSED_ROOT="Yes"
 381                                 export EXPOSED_ROOT
 382                                 ;;
 383
 384                         plainroot)
 385                                 PLAIN_ROOT="Yes"
 386                                 export PLAIN_ROOT
 387                                 ;;
 388
 389                         root=*)
 390                                 ROOT="${ARGUMENT#root=}"
 391                                 export ROOT
 392                                 ;;
 393
 394                         union=*)
 395                                 UNIONTYPE="${ARGUMENT#union=}"
 396                                 export UNIONTYPE
 397                                 ;;
 398
 399                         utc=*)
 400                                 UTC="${ARGUMENT#utc=}"
 401                                 export UTC
 402                                 ;;
 403
 404                         xdebconf)
 405                                 XDEBCONF="Yes"
 406                                 export XDEBCONF
 407                                 ;;
 408
 409                         xdriver=*)
 410                                 XDRIVER="${ARGUMENT#xdriver=}"
 411                                 export XDRIVER
 412                                 ;;
 413
 414                         xvideomode=*)
 415                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 416                                 export XVIDEOMODE
 417                                 ;;
 418                 esac
 419         done
 420
 421         # sort of compatibility with netboot.h from linux docs
 422         if [ -z "${NETBOOT}" ]
 423         then
 424                 if [ "${ROOT}" = "/dev/nfs" ]
 425                 then
 426                         NETBOOT="nfs"
 427                         export NETBOOT
 428                 elif [ "${ROOT}" = "/dev/cifs" ]
 429                 then
 430                         NETBOOT="cifs"
 431                         export NETBOOT
 432                 fi
 433         fi
 434
 435         if [ -z "${MODULE}" ]
 436         then
 437                 MODULE="filesystem"
 438                 export MODULE
 439         fi
 440
 441         if [ -z "${UNIONTYPE}" ]
 442         then
 443                 UNIONTYPE="unionfs"
 444                 export UNIONTYPE
 445         fi
 446 }
 447
 448 is_live_path ()
 449 {
 450         DIRECTORY="${1}"
 451
 452         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 453         then
 454                 for FILESYSTEM in squashfs ext2 ext3 xfs dir jffs2
 455                 do
 456                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 457                         then
 458                                 return 0
 459                         fi
 460                 done
 461         fi
 462
 463         return 1
 464 }
 465
 466 matches_uuid ()
 467 {
 468         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 469         then
 470                 return 0
 471         fi
 472
 473         path="${1}"
 474         uuid="$(cat /conf/uuid.conf)"
 475
 476         for try_uuid_file in "${mountpoint}/.disk/casper-uuid"*
 477         do
 478                 [ -e "${try_uuid_file}" ] || continue
 479
 480                 try_uuid="$(cat "${try_uuid_file}")"
 481
 482                 if [ "${uuid}" = "${try_uuid}" ]
 483                 then
 484                         return 0
 485                 fi
 486         done
 487
 488         return 1
 489 }
 490
 491 get_backing_device ()
 492 {
 493         case "${1}" in
 494                 *.squashfs|*.ext2|*.ext3|*.jffs2)
 495                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}")
 496                         ;;
 497
 498                 *.dir)
 499                         echo "directory"
 500                         ;;
 501
 502                 *)
 503                         panic "Unrecognized live filesystem: ${1}"
 504                         ;;
 505         esac
 506 }
 507
 508 match_files_in_dir ()
 509 {
 510         # Does any files match pattern ${1} ?
 511         local pattern="${1}"
 512
 513         if [ "$(echo ${pattern})" != "${pattern}" ]
 514         then
 515                 return 0
 516         fi
 517
 518         return 1
 519 }
 520
 521 mount_images_in_directory ()
 522 {
 523         directory="${1}"
 524         rootmnt="${2}"
 525         mac="${3}"
 526
 527
 528         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 529                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 530                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 531                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 532                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 533         then
 534                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 535                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 536         else
 537                 :
 538         fi
 539 }
 540
 541 is_nice_device ()
 542 {
 543         sysfs_path="${1#/sys}"
 544
 545         if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-[^-]*-[ide|scsi|usb])"
 546         then
 547                 return 0
 548         fi
 549
 550         return 1
 551 }
 552
 553 is_supported_fs ()
 554 {
 555         # FIXME: do something better like the scan of supported filesystems
 556         fstype="${1}"
 557
 558         case ${fstype} in
 559                 vfat|iso9660|udf|ext2|ext3|ntfs|jffs2)
 560                         return 0
 561                         ;;
 562         esac
 563
 564         return 1
 565 }
 566
 567 copy_live_to ()
 568 {
 569         copyfrom="${1}"
 570         copytodev="${2}"
 571         copyto="${copyfrom}_swap"
 572
 573         if [ -z "${MODULETORAM}" ]
 574         then
 575                 size=$(fs_size "" ${copyfrom} "used")
 576         else
 577                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 578
 579                 if [ -f "${MODULETORAMFILE}" ]
 580                 then
 581                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 582                 else
 583                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 584                         return 1
 585                 fi
 586         fi
 587
 588         if [ "${copytodev}" = "ram" ]
 589         then
 590                 # copying to ram:
 591                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ) )
 592                 mount_options="-o size=${size}k"
 593                 free_string="memory"
 594                 fstype="tmpfs"
 595                 dev="/dev/shm"
 596         else
 597                 # it should be a writable block device
 598                 if [ -b "${copytodev}" ]
 599                 then
 600                         dev="${copytodev}"
 601                         free_string="space"
 602                         fstype=$(get_fstype "${dev}")
 603                         freespace=$(fs_size "${dev}")
 604                 else
 605                         [ "$quiet" != "y" ] && log_warning_msg "${copytodev} is not a block device."
 606                         return 1
 607                 fi
 608         fi
 609
 610         if [ "${freespace}" -lt "${size}" ]
 611         then
 612                 [ "${quiet}" != "y" ] && log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 613                 return 1
 614         fi
 615
 616         # begin copying (or uncompressing)
 617         mkdir "${copyto}"
 618         echo "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 619         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 620
 621         if [ "${extension}" = "tgz" ]
 622         then
 623                 cd "${copyto}"
 624                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 625                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 626                 mount -r --move "${copyto}" "${rootmnt}"
 627                 cd "${OLDPWD}"
 628         else
 629                 if [ -n "${MODULETORAMFILE}" ]
 630                 then
 631                         cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 632                 else
 633                         cp -a ${copyfrom}/* ${copyto}   # "cp -a" from busybox also copies hidden files
 634                 fi
 635
 636                 livefs_root
 637                 umount ${copyfrom}
 638                 mount -r --move ${copyto} ${copyfrom}
 639         fi
 640
 641         rmdir ${copyto}
 642         return 0
 643 }
 644
 645 do_netmount ()
 646 {
 647         rc=1
 648
 649         modprobe -q af_packet # For DHCP
 650
 651         udevtrigger
 652         udevsettle
 653
 654         ipconfig ${DEVICE} | tee /netboot.config
 655
 656         # source relevant ipconfig output
 657         OLDHOSTNAME=${HOSTNAME}
 658         . /tmp/net-${DEVICE}.conf
 659         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 660         export HOSTNAME
 661
 662         if [ "${NFSROOT}" = "auto" ]
 663         then
 664                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 665         fi
 666
 667         if [ -n "${FETCH}" ] && do_httpmount
 668         then
 669                 rc=0
 670                 return ${rc}
 671         fi
 672
 673         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 674         then
 675                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 676         fi
 677
 678         [ "${quiet}" != "y" ] && log_begin_msg "Trying netboot from ${NFSROOT}"
 679
 680         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 681         then
 682                 rc=0
 683         elif do_nfsmount
 684         then
 685                 NETBOOT="nfs"
 686                 export NETBOOT
 687                 rc=0
 688         fi
 689
 690         [ "${quiet}" != "y" ] && log_end_msg
 691         return ${rc}
 692 }
 693
 694 do_httpmount ()
 695 {
 696         rc=1
 697         extension=$(echo "${FETCH}" | sed 's/\(.*\)\.\(.*\)/\2/')
 698
 699         case "${extension}" in
 700                 squashfs|tgz|tar)
 701                         [ "${quiet}" != "y" ] && log_begin_msg "Trying wget ${FETCH} -O ${mountpoint}/$(basename ${FETCH})"
 702                         mkdir -p "${mountpoint}/${LIVE_MEDIA_PATH}"
 703                         wget "${FETCH}" -O "${mountpoint}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 704                         [ ${?} -eq 0 ] && rc=0
 705                         [ "${extension}" = "tgz" ] && live_dest="ram"
 706                         ;;
 707
 708                 *)
 709                         [ "${quiet}" != "y" ] && log_begin_msg "Unrecognized archive extension for ${FETCH}"
 710         esac
 711
 712         return ${rc}
 713 }
 714
 715 do_nfsmount ()
 716 {
 717         rc=1
 718
 719         modprobe -q nfs
 720
 721         if [ -z "${NFSOPTS}" ]
 722         then
 723                 NFSOPTS=""
 724         fi
 725
 726         [ "${quiet}" != "y" ] && log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 727
 728         # FIXME: This for loop is an ugly HACK round an nfs bug
 729         for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13
 730         do
 731                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 732                 sleep 1
 733         done
 734
 735         return ${rc}
 736 }
 737
 738 do_cifsmount ()
 739 {
 740         rc=1
 741
 742         if [ -x "/sbin/mount.cifs" ]
 743         then
 744                 if [ -z "${NFSOPTS}" ]
 745                 then
 746                         CIFSOPTS="-ouser=root,password="
 747                 else
 748                         CIFSOPTS="${NFSOPTS}"
 749                 fi
 750
 751                 [ "${quiet}" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 752                 modprobe -q cifs
 753
 754                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 755                 then
 756                         rc=0
 757                 fi
 758         fi
 759
 760         return ${rc}
 761 }
 762
 763 do_snap_copy ()
 764 {
 765         fromdev="${1}"
 766         todir="${2}"
 767         snap_type="${3}"
 768         size=$(fs_size "${fromdev}" "" "used")
 769
 770         if [ -b "${fromdev}" ]
 771         then
 772                 # look for free mem
 773                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 774                 then
 775                         todev=$(cat /proc/mounts | grep -s " $(base_path ${todir}) " | awk '{print $1}' )
 776                         freespace=$(df -k  | grep -s ${todev} | awk '{print $4}')
 777                 else
 778                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ))
 779                 fi
 780
 781                 tomount="/mnt/tmpsnap"
 782
 783                 if [ ! -d "${tomount}" ]
 784                 then
 785                         mkdir -p "${tomount}"
 786                 fi
 787
 788                 fstype=$(get_fstype "${fromdev}")
 789
 790                 if [ -n "${fstype}" ]
 791                 then
 792                         # Copying stuff...
 793                         mount -t "${fstype}" -o ro,noatime "${fromdev}" "${tomount}"
 794                         cp -a "${tomount}"/* ${todir}
 795                         umount "${tomount}"
 796                 else
 797                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 798                 fi
 799
 800                 rmdir "${tomount}"
 801
 802                 if echo ${fromdev} | grep -qs loop
 803                 then
 804                         losetup -d "${fromdev}"
 805                 fi
 806
 807                 return 0
 808         else
 809                 return 1
 810
 811                 [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 812         fi
 813 }
 814
 815 try_snap ()
 816 {
 817         # Look for ${snap_label}.* in block devices and copy the contents to ${snap_mount}
 818         # and remember the device and filename for resync on exit in live-initramfs.init
 819
 820         snap_label="${1}"
 821         snap_mount="${2}"
 822         snap_type="${3}"
 823         snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
 824
 825         if [ ! -z "${snapdata}" ]
 826         then
 827                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 828                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 829                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 830
 831                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|jffs2\)'
 832                 then
 833                         # squashfs, jffs2 or ext2/ext3 snapshot
 834                         dev=$(get_backing_device "${snapback}/${snapfile}")
 835
 836                         if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 837                         then
 838                                 log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 839                                 return 1
 840                         fi
 841                 else
 842                         # cpio.gz snapshot
 843                         if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio -i -u -d 2>/dev/null)
 844                         then
 845                                 log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 846                                 return 1
 847                         fi
 848                 fi
 849
 850                 umount "${snapback}"
 851         else
 852                 dev=$(find_cow_device "${snap_label}")
 853
 854                 if [ -b ${dev} ]
 855                 then
 856                         if echo "${dev}" | grep -qs loop
 857                         then
 858                                 # strange things happens, user confused?
 859                                 snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
 860                                 snapfile=$(basename ${snaploop})
 861                                 snapdev=$(cat /proc/mounts | awk '{print $2,$1}' | grep -es "^$( dirname ${snaploop} )" | cut -f2 -d ' ')
 862                         else
 863                                 snapdev="${dev}"
 864                         fi
 865
 866                         if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 867                         then
 868                                 log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 869                                 return 1
 870                         else
 871                                 if [ -n "${snapfile}" ]
 872                                 then
 873                                         # it was a loop device, user confused
 874                                         umount ${snapdev}
 875                                 fi
 876                         fi
 877                 else
 878                         log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 879                         return 1
 880                 fi
 881         fi
 882
 883         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
 884         return 0
 885 }
 886
 887 setup_unionfs ()
 888 {
 889         image_directory="${1}"
 890         rootmnt="${2}"
 891         addimage_directory="${3}"
 892         modprobe -q -b ${UNIONTYPE}
 893
 894         # run-init can't deal with images in a subdir, but we're going to
 895         # move all of these away before it runs anyway.  No, we're not,
 896         # put them in / since move-mounting them into / breaks mono and
 897         # some other apps.
 898
 899         croot="/"
 900
 901         # Let's just mount the read-only file systems first
 902         rofsstring=""
 903         rofslist=""
 904         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
 905
 906         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
 907         then
 908                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
 909                 roopt="nfsro"
 910         elif [ "${UNIONTYPE}" = "aufs" ]
 911         then
 912                 roopt="rr"
 913         else
 914                 roopt="ro"
 915         fi
 916
 917         # Read image names from ${MODULE}.module if it exists
 918         if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
 919         then
 920                 for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
 921                 do
 922                         image_string="${image_string} ${image_directory}/${IMAGE}"
 923                 done
 924         elif [ -e "${image_directory}/${MODULE}.module" ]
 925         then
 926                 for IMAGE in $(cat ${image_directory}/${MODULE}.module)
 927                 do
 928                         image_string="${image_string} ${image_directory}/${IMAGE}"
 929                 done
 930         else
 931                 # ${MODULE}.module does not exist, create a list of images
 932                 for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
 933                 do
 934                         for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
 935                         do
 936                                 if [ -e "${IMAGE}" ]
 937                                 then
 938                                         image_string="${image_string} ${IMAGE}"
 939                                 fi
 940                         done
 941                 done
 942
 943                 if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
 944                 then
 945                         for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
 946                         do
 947                                 for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
 948                                 do
 949                                         if [ -e "${IMAGE}" ]
 950                                         then
 951                                                 image_string="${image_string} ${IMAGE}"
 952                                         fi
 953                                 done
 954                         done
 955                 fi
 956
 957                 # Now sort the list
 958                 image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
 959         fi
 960
 961         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
 962
 963         mkdir -p "${croot}"
 964
 965         for image in ${image_string}
 966         do
 967                 imagename=$(basename "${image}")
 968
 969                 if [ -d "${image}" ]
 970                 then
 971                         # it is a plain directory: do nothing
 972                         rofsstring="${image}=${roopt}:${rofsstring}"
 973                         rofslist="${image} ${rofslist}"
 974                 elif [ -f "${image}" ]
 975                 then
 976                         backdev=$(get_backing_device "${image}")
 977                         fstype=$(get_fstype "${backdev}")
 978
 979                         if [ "${fstype}" = "unknown" ]
 980                         then
 981                                 panic "Unknown file system type on ${backdev} (${image})"
 982                         fi
 983
 984                         mkdir -p "${croot}/${imagename}"
 985                         echo "debug: Can not mount backdev ${backdev} (image = ${image}) on croot/imagename ${croot}/${imagename}"
 986                         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} ${rofslist}"
 987                 fi
 988         done
 989
 990         rofsstring=${rofsstring%:}
 991
 992         mkdir -p /cow
 993
 994         # Looking for "${root_persistence}" device or file
 995         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
 996         then
 997                 # Load USB modules
 998                 num_block=$(ls -l /sys/block | wc -l)
 999                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1000                 do
1001                         modprobe -q -b ${module}
1002                 done
1003
1004                 udevtrigger
1005                 udevsettle
1006
1007                 # For some reason, udevsettle does not block in this scenario,
1008                 # so we sleep for a little while.
1009                 #
1010                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1011                 for timeout in 5 4 3 2 1
1012                 do
1013                         sleep 1
1014
1015                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1016                         then
1017                                 break
1018                         fi
1019                 done
1020
1021                 cowprobe=$(find_cow_device "${root_persistence}")
1022
1023                 if [ -b "${cowprobe}" ]
1024                 then
1025                         cowdevice=${cowprobe}
1026                         cow_fstype=$(get_fstype "${cowprobe}")
1027                 else
1028                         [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the persistent medium"
1029                         cowdevice="tmpfs"
1030                         cow_fstype="tmpfs"
1031                 fi
1032         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1033         then
1034                 # check if there are any nfs options
1035                 if echo ${NFS_COW}|grep -q ','
1036                 then
1037                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1038                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1039                 else
1040                         nfs_cow_opts="-o nolock"
1041                         nfs_cow=${NFS_COW}
1042                 fi
1043                 mac="$(get_mac)"
1044                 if [ -n "${mac}" ]
1045                 then
1046                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1047                         cow_fstype="nfs"
1048                 else
1049                         panic "unable to determine mac address"
1050                 fi
1051         else
1052                 cowdevice="tmpfs"
1053                 cow_fstype="tmpfs"
1054         fi
1055
1056         if [ "${cow_fstype}" = "nfs" ]
1057         then
1058                 [ "${quiet}" != "y" ] && log_begin_msg \
1059                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1060                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1061                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1062         else
1063                 mount -t ${cow_fstype} -o rw,noatime ${cowdevice} /cow || \
1064                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1065         fi
1066
1067         rofscount=$(echo ${rofslist} |wc -w)
1068
1069         if [ -n "${EXPOSED_ROOT}" ]
1070         then
1071                 if [ ${rofscount} -ne 1 ]
1072                 then
1073                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1074                 fi
1075                 exposedrootfs=${rofslist%% }
1076
1077                 mount --bind ${exposedrootfs} ${rootmnt} || \
1078                         panic "bind mount of ${exposedrootfs} failed"
1079
1080                 cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool
1081                         /home /var/lib/live'
1082
1083                 for dir in ${cow_dirs}; do
1084                         mkdir -p /cow${dir}
1085                         mount -t ${UNIONTYPE} \
1086                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1087                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1088                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1089                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1090                 done
1091         else
1092                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1093                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1094                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1095         fi
1096
1097         # tmpfs file systems
1098         mkdir -p "${rootmnt}/live"
1099         mount -t tmpfs tmpfs ${rootmnt}/live
1100
1101         # Adding other custom mounts
1102         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1103         then
1104                 # directly mount /home
1105                 # FIXME: add a custom mounts configurable system
1106                 homecow=$(find_cow_device "${home_persistence}" )
1107
1108                 if [ -b "${homecow}" ]
1109                 then
1110                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1111                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1112                 else
1113                         [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the persistent home medium"
1114                 fi
1115
1116                 # Look for other snapshots to copy in
1117                 try_snap "${root_snapshot_label}" "${rootmnt}" "ROOT"
1118                 try_snap "${home_snapshot_label}" "${rootmnt}/home" "HOME"
1119         fi
1120
1121         if [ -n "${SHOWMOUNTS}" ]
1122         then
1123                 for d in ${rofslist}
1124                 do
1125                         mkdir -p "${rootmnt}/live/${d##*/}"
1126
1127                         case d in
1128                                 *.dir)
1129                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1130                                         ;;
1131
1132                                 *)
1133                                         mount --move "${d}" "${rootmnt}/live/${d##*/}"
1134                                         ;;
1135                         esac
1136                 done
1137         fi
1138
1139         # shows cow fs on /cow for use by live-snapshot
1140         mkdir -p "${rootmnt}/live/cow"
1141         mount -o move /cow "${rootmnt}/live/cow"
1142 }
1143
1144 check_dev ()
1145 {
1146         sysdev="${1}"
1147         devname="${2}"
1148         skip_uuid_check="${3}"
1149
1150         if [ -z "${devname}" ]
1151         then
1152                 devname=$(sys2dev "${sysdev}")
1153         fi
1154
1155         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1156         then
1157                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1158                 devname="${loopdevname}"
1159         fi
1160
1161         fstype=$(get_fstype "${devname}")
1162
1163         if is_supported_fs ${fstype}
1164         then
1165                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1166
1167                 if is_live_path ${mountpoint} && \
1168                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1169                 then
1170                         echo ${mountpoint}
1171                         return 0
1172                 else
1173                         umount ${mountpoint}
1174                 fi
1175         fi
1176
1177         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1178         then
1179                 losetup -d "${loopdevname}"
1180         fi
1181
1182         return 1
1183 }
1184
1185 find_livefs ()
1186 {
1187         timeout="${1}"
1188
1189         # first look at the one specified in the command line
1190         if [ ! -z "${LIVE_MEDIA}" ]
1191         then
1192                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1193                 then
1194                         return 0
1195                 fi
1196         fi
1197
1198         # don't start autodetection before timeout has expired
1199         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1200         then
1201                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1202                 then
1203                         return 1
1204                 fi
1205         fi
1206
1207         # or do the scan of block devices
1208         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram | grep -v 'dm-')
1209         do
1210                 devname=$(sys2dev "${sysblock}")
1211                 fstype=$(get_fstype "${devname}")
1212
1213                 if /lib/udev/cdrom_id ${devname} > /dev/null
1214                 then
1215                         if check_dev "null" "${devname}"
1216                         then
1217                                 return 0
1218                         fi
1219                 elif is_nice_device "${sysblock}"
1220                 then
1221                         for dev in $(subdevices "${sysblock}")
1222                         do
1223                                 if check_dev "${dev}"
1224                                 then
1225                                         return 0
1226                                 fi
1227                         done
1228                 elif [ "${fstype}" = "squashfs" -o \
1229                         "${fstype}" = "ext2" -o \
1230                         "${fstype}" = "ext3" -o \
1231                         "${fstype}" = "jffs2" ]
1232                 then
1233                         # This is an ugly hack situation, the block device has
1234                         # an image directly on it.  It's hopefully
1235                         # live-initramfs, so take it and run with it.
1236                         ln -s "${devname}" "${devname}.${fstype}"
1237                         echo "${devname}.${fstype}"
1238                         return 0
1239                 fi
1240         done
1241
1242         return 1
1243 }
1244
1245 set_usplash_timeout ()
1246 {
1247         if [ -x /sbin/usplash_write ]
1248         then
1249                 /sbin/usplash_write "TIMEOUT 120"
1250         fi
1251 }
1252
1253 mountroot ()
1254 {
1255
1256         if [ -x /scripts/local-top/cryptroot ]; then
1257             /scripts/local-top/cryptroot
1258         fi
1259
1260         exec 6>&1
1261         exec 7>&2
1262         exec > live.log
1263         exec 2>&1
1264
1265         Arguments
1266
1267         set_usplash_timeout
1268         [ "${quiet}" != "y" ] && log_begin_msg "Running /scripts/live-premount"
1269         run_scripts /scripts/live-premount
1270         [ "${quiet}" != "y" ] && log_end_msg
1271
1272         # Needed here too because some things (*cough* udev *cough*)
1273         # changes the timeout
1274
1275         set_usplash_timeout
1276
1277         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ]
1278         then
1279                 if do_netmount
1280                 then
1281                         livefs_root="${mountpoint}"
1282                 else
1283                         panic "Unable to find a live file system on the network"
1284                 fi
1285         else
1286                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1287                 then
1288                         # Do a local boot from hd
1289                         livefs_root=${ROOT}
1290                 else
1291                         # Scan local devices for the image
1292                         for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
1293                         do
1294                                 livefs_root=$(find_livefs ${i})
1295
1296                                 if [ -n "${livefs_root}" ]
1297                                 then
1298                                         break
1299                                 fi
1300
1301                                 sleep 1
1302                         done
1303                 fi
1304         fi
1305
1306         if [ -z "${livefs_root}" ]
1307         then
1308                 panic "Unable to find a medium containing a live file system"
1309         fi
1310
1311         if [ "${TORAM}" ]
1312         then
1313                 live_dest="ram"
1314         elif [ "${TODISK}" ]
1315         then
1316                 live_dest="${TODISK}"
1317         fi
1318
1319         if [ "${live_dest}" ]
1320         then
1321                 log_begin_msg "Copying live media to ${live_dest}"
1322                 copy_live_to "${livefs_root}" "${live_dest}"
1323                 log_end_msg
1324         fi
1325
1326         if [ -n "${MODULETORAMFILE}" ]
1327         then
1328                 setup_unionfs "${livefs_root}" "${rootmnt}"
1329         else
1330                 mac="$(get_mac)"
1331                 mac="$(echo ${mac} | sed 's/-//g')"
1332                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1333         fi
1334
1335         log_end_msg
1336
1337         maybe_break live-bottom
1338         [ "${quiet}" != "y" ] && log_begin_msg "Running /scripts/live-bottom"
1339
1340         run_scripts /scripts/live-bottom
1341         [ "${quiet}" != "y" ] && log_end_msg
1342
1343         exec 1>&6 6>&-
1344         exec 2>&7 7>&-
1345         cp live.log "${rootmnt}/var/log/"
1346 }