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="${ARGUMENT#live-media-timeout=}"
 154                                 export LIVE_MEDIA_TIMEOUT
 155                                 ;;
 156
 157                         language=*|debian-installer/language=*)
 158                                 language=${x#debian-installer/language=}
 159                                 locale="$(lang2locale "$language")"
 160                                 set_locale="true"
 161                                 ;;
 162
 163                         locale=*|debian-installer/locale=*)
 164                                 LOCALE="${ARGUMENT#*=}"
 165                                 export LOCALE
 166                                 ;;
 167
 168                         module=*)
 169                                 MODULE="${ARGUMENT#module=}"
 170                                 export MODULE
 171                                 ;;
 172
 173                         netboot=*)
 174                                 NETBOOT="${ARGUMENT#netboot=}"
 175                                 export NETBOOT
 176                                 ;;
 177
 178                         nfsopts=*)
 179                                 NFSOPTS="${ARGUMENT#nfsopts=}"
 180                                 export NFSOPTS
 181                                 ;;
 182
 183                         nfscow=*)
 184                                 NFS_COW="${ARGUMENT#nfscow=}"
 185                                 export NFS_COW
 186                                 ;;
 187
 188                         noaccessibility)
 189                                 NOACCESSIBILITY="Yes"
 190                                 export NOACCESSIBILITY
 191                                 ;;
 192
 193                         noapparmor)
 194                                 NOAPPARMOR="Yes"
 195                                 export NOAPPARMOR
 196                                 ;;
 197
 198                         noaptcdrom)
 199                                 NOAPTCDROM="Yes"
 200                                 export NOAPTCDROM
 201                                 ;;
 202
 203                         noautologin)
 204                                 NOAUTOLOGIN="Yes"
 205                                 export NOAUTOLOGIN
 206                                 ;;
 207
 208                         noxautologin)
 209                                 NOXAUTOLOGIN="Yes"
 210                                 export NOXAUTOLOGIN
 211                                 ;;
 212
 213                         noconsolekeyboard)
 214                                 NOCONSOLEKEYBOARD="Yes"
 215                                 export NOCONSOLEKEYBOARD
 216                                 ;;
 217
 218                         nofastboot)
 219                                 NOFASTBOOT="Yes"
 220                                 export NOFASTBOOT
 221                                 ;;
 222
 223                         nofstab)
 224                                 NOFSTAB="Yes"
 225                                 export NOFSTAB
 226                                 ;;
 227
 228                         nognomepanel)
 229                                 NOGNOMEPANEL="Yes"
 230                                 export NOGNOMEPANEL
 231                                 ;;
 232
 233                         nohosts)
 234                                 NOHOSTS="Yes"
 235                                 export NOHOSTS
 236                                 ;;
 237
 238                         nokpersonalizer)
 239                                 NOKPERSONALIZER="Yes"
 240                                 export NOKPERSONALIZER
 241                                 ;;
 242
 243                         nolanguageselector)
 244                                 NOLANGUAGESELECTOR="Yes"
 245                                 export NOLANGUAGESELECTOR
 246                                 ;;
 247
 248                         nolocales)
 249                                 NOLOCALES="Yes"
 250                                 export NOLOCALES
 251                                 ;;
 252
 253                         nonetworking)
 254                                 NONETWORKING="Yes"
 255                                 export NONETWORKING
 256                                 ;;
 257
 258                         nopowermanagement)
 259                                 NOPOWERMANAGEMENT="Yes"
 260                                 export NOPOWERMANAGEMENT
 261                                 ;;
 262
 263                         noprogramcrashes)
 264                                 NOPROGRAMCRASHES="Yes"
 265                                 export NOPROGRAMCRASHES
 266                                 ;;
 267
 268                         norestrictedmanager)
 269                                 NORESTRICTEDMANAGER="Yes"
 270                                 export NORESTRICTEDMANAGER
 271                                 ;;
 272
 273                         nosudo)
 274                                 NOSUDO="Yes"
 275                                 export NOSUDO
 276                                 ;;
 277
 278                         noswap)
 279                                 NOSWAP="Yes"
 280                                 export NOSWAP
 281                                 ;;
 282
 283                         noupdatenotifier)
 284                                 NOUPDATENOTIFIER="Yes"
 285                                 export NOUPDATENOTIFIER
 286                                 ;;
 287
 288                         nouser)
 289                                 NOUSER="Yes"
 290                                 export NOUSER
 291                                 ;;
 292
 293                         noxautoconfig)
 294                                 NOXAUTOCONFIG="Yes"
 295                                 export NOXAUTOCONFIG
 296                                 ;;
 297
 298                         noxscreensaver)
 299                                 NOXSCREENSAVER="Yes"
 300                                 export NOXSCREENSAVER
 301                                 ;;
 302
 303                         persistent)
 304                                 PERSISTENT="Yes"
 305                                 export PERSISTENT
 306                                 ;;
 307
 308                         nopersistent)
 309                                 NOPERSISTENT="Yes"
 310                                 export NOPERSISTENT
 311                                 ;;
 312
 313                         preseed/file=*|file=*)
 314                                 LOCATION="${ARGUMENT#*=}"
 315                                 export LOCATION
 316                                 ;;
 317
 318                         nopreseed)
 319                                 NOPRESEED="Yes"
 320                                 export NOPRESEED
 321                                 ;;
 322
 323                         url=*)
 324                                 location="${ARGUMENT#url=}"
 325
 326                                 mount -n -o bind /sys /root/sys
 327                                 mount -n -o bind /proc /root/proc
 328                                 mount -n -o bind /dev /root/dev
 329
 330                                 mkdir -p /root/var/run/network
 331                                 chroot /root dhclient eth0
 332                                 chroot /root wget -P /tmp "${location}"
 333                                 chroot /root ifconfig eth0 down
 334
 335                                 umount /root/sys
 336                                 umount /root/proc
 337                                 umount /root/dev
 338
 339                                 LOCATION="/tmp/$(basename "${location}")"
 340                                 ;;
 341
 342                         */*=*)
 343                                 question="${ARGUMENT%%=*}"
 344                                 value="${ARGUMENT#*=}"
 345                                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 346                                 export PRESEEDS
 347                                 ;;
 348
 349                         showmounts)
 350                                 SHOWMOUNTS="Yes"
 351                                 export SHOWMOUNTS
 352                                 ;;
 353
 354                         textonly)
 355                                 TEXTONLY="Yes"
 356                                 export TEXTONLY
 357                                 ;;
 358
 359                         timezone=*)
 360                                 TIMEZONE="${ARGUMENT#timezone=}"
 361                                 export TIMEZONE
 362                                 ;;
 363
 364                         notimezone)
 365                                 NOTIMEZONE="Yes"
 366                                 export NOTIMEZONE
 367                                 ;;
 368
 369                         todisk=*)
 370                                 TODISK="${ARGUMENT#todisk=}"
 371                                 export TODISK
 372                                 ;;
 373
 374                         toram)
 375                                 TORAM="Yes"
 376                                 export TORAM
 377                                 ;;
 378
 379                         toram=*)
 380                                 TORAM="Yes"
 381                                 MODULETORAM="${ARGUMENT#toram=}"
 382                                 export TORAM MODULETORAM
 383                                 ;;
 384
 385                         exposedroot)
 386                                 EXPOSED_ROOT="Yes"
 387                                 export EXPOSED_ROOT
 388                                 ;;
 389
 390                         plainroot)
 391                                 PLAIN_ROOT="Yes"
 392                                 export PLAIN_ROOT
 393                                 ;;
 394
 395                         root=*)
 396                                 ROOT="${ARGUMENT#root=}"
 397                                 export ROOT
 398                                 ;;
 399
 400                         union=*)
 401                                 UNIONTYPE="${ARGUMENT#union=}"
 402                                 export UNIONTYPE
 403                                 ;;
 404
 405                         utc=*)
 406                                 UTC="${ARGUMENT#utc=}"
 407                                 export UTC
 408                                 ;;
 409
 410                         xdebconf)
 411                                 XDEBCONF="Yes"
 412                                 export XDEBCONF
 413                                 ;;
 414
 415                         xdriver=*)
 416                                 XDRIVER="${ARGUMENT#xdriver=}"
 417                                 export XDRIVER
 418                                 ;;
 419
 420                         xvideomode=*)
 421                                 XVIDEOMODE="${ARGUMENT#xvideomode=}"
 422                                 export XVIDEOMODE
 423                                 ;;
 424                 esac
 425         done
 426
 427         # sort of compatibility with netboot.h from linux docs
 428         if [ -z "${NETBOOT}" ]
 429         then
 430                 if [ "${ROOT}" = "/dev/nfs" ]
 431                 then
 432                         NETBOOT="nfs"
 433                         export NETBOOT
 434                 elif [ "${ROOT}" = "/dev/cifs" ]
 435                 then
 436                         NETBOOT="cifs"
 437                         export NETBOOT
 438                 fi
 439         fi
 440
 441         if [ -z "${MODULE}" ]
 442         then
 443                 MODULE="filesystem"
 444                 export MODULE
 445         fi
 446
 447         if [ -z "${UNIONTYPE}" ]
 448         then
 449                 UNIONTYPE="unionfs"
 450                 export UNIONTYPE
 451         fi
 452 }
 453
 454 is_live_path ()
 455 {
 456         DIRECTORY="${1}"
 457
 458         if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 459         then
 460                 for FILESYSTEM in squashfs ext2 ext3 xfs dir jffs2
 461                 do
 462                         if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 463                         then
 464                                 return 0
 465                         fi
 466                 done
 467         fi
 468
 469         return 1
 470 }
 471
 472 matches_uuid ()
 473 {
 474         if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
 475         then
 476                 return 0
 477         fi
 478
 479         path="${1}"
 480         uuid="$(cat /conf/uuid.conf)"
 481
 482         for try_uuid_file in "${mountpoint}/.disk/casper-uuid"*
 483         do
 484                 [ -e "${try_uuid_file}" ] || continue
 485
 486                 try_uuid="$(cat "${try_uuid_file}")"
 487
 488                 if [ "${uuid}" = "${try_uuid}" ]
 489                 then
 490                         return 0
 491                 fi
 492         done
 493
 494         return 1
 495 }
 496
 497 get_backing_device ()
 498 {
 499         case "${1}" in
 500                 *.squashfs|*.ext2|*.ext3|*.jffs2)
 501                         echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}")
 502                         ;;
 503
 504                 *.dir)
 505                         echo "directory"
 506                         ;;
 507
 508                 *)
 509                         panic "Unrecognized live filesystem: ${1}"
 510                         ;;
 511         esac
 512 }
 513
 514 match_files_in_dir ()
 515 {
 516         # Does any files match pattern ${1} ?
 517         local pattern="${1}"
 518
 519         if [ "$(echo ${pattern})" != "${pattern}" ]
 520         then
 521                 return 0
 522         fi
 523
 524         return 1
 525 }
 526
 527 mount_images_in_directory ()
 528 {
 529         directory="${1}"
 530         rootmnt="${2}"
 531         mac="${3}"
 532
 533
 534         if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 535                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 536                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
 537                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 538                 match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 539         then
 540                 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
 541                 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
 542         else
 543                 :
 544         fi
 545 }
 546
 547 is_nice_device ()
 548 {
 549         sysfs_path="${1#/sys}"
 550
 551         if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-[^-]*-[ide|scsi|usb])"
 552         then
 553                 return 0
 554         fi
 555
 556         return 1
 557 }
 558
 559 is_supported_fs ()
 560 {
 561         # FIXME: do something better like the scan of supported filesystems
 562         fstype="${1}"
 563
 564         case ${fstype} in
 565                 vfat|iso9660|udf|ext2|ext3|ntfs|jffs2)
 566                         return 0
 567                         ;;
 568         esac
 569
 570         return 1
 571 }
 572
 573 copy_live_to ()
 574 {
 575         copyfrom="${1}"
 576         copytodev="${2}"
 577         copyto="${copyfrom}_swap"
 578
 579         if [ -z "${MODULETORAM}" ]
 580         then
 581                 size=$(fs_size "" ${copyfrom} "used")
 582         else
 583                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 584
 585                 if [ -f "${MODULETORAMFILE}" ]
 586                 then
 587                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 588                 else
 589                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 590                         return 1
 591                 fi
 592         fi
 593
 594         if [ "${copytodev}" = "ram" ]
 595         then
 596                 # copying to ram:
 597                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ) )
 598                 mount_options="-o size=${size}k"
 599                 free_string="memory"
 600                 fstype="tmpfs"
 601                 dev="/dev/shm"
 602         else
 603                 # it should be a writable block device
 604                 if [ -b "${copytodev}" ]
 605                 then
 606                         dev="${copytodev}"
 607                         free_string="space"
 608                         fstype=$(get_fstype "${dev}")
 609                         freespace=$(fs_size "${dev}")
 610                 else
 611                         [ "$quiet" != "y" ] && log_warning_msg "${copytodev} is not a block device."
 612                         return 1
 613                 fi
 614         fi
 615
 616         if [ "${freespace}" -lt "${size}" ]
 617         then
 618                 [ "${quiet}" != "y" ] && log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 619                 return 1
 620         fi
 621
 622         # begin copying (or uncompressing)
 623         mkdir "${copyto}"
 624         echo "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 625         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 626
 627         if [ "${extension}" = "tgz" ]
 628         then
 629                 cd "${copyto}"
 630                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 631                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 632                 mount -r --move "${copyto}" "${rootmnt}"
 633                 cd "${OLDPWD}"
 634         else
 635                 if [ -n "${MODULETORAMFILE}" ]
 636                 then
 637                         cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 638                 else
 639                         cp -a ${copyfrom}/* ${copyto}   # "cp -a" from busybox also copies hidden files
 640                 fi
 641
 642                 livefs_root
 643                 umount ${copyfrom}
 644                 mount -r --move ${copyto} ${copyfrom}
 645         fi
 646
 647         rmdir ${copyto}
 648         return 0
 649 }
 650
 651 do_netmount ()
 652 {
 653         rc=1
 654
 655         modprobe -q af_packet # For DHCP
 656
 657         udevtrigger
 658         udevsettle
 659
 660         ipconfig ${DEVICE} | tee /netboot.config
 661
 662         # source relevant ipconfig output
 663         OLDHOSTNAME=${HOSTNAME}
 664         . /tmp/net-${DEVICE}.conf
 665         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 666         export HOSTNAME
 667
 668         if [ "${NFSROOT}" = "auto" ]
 669         then
 670                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 671         fi
 672
 673         if [ -n "${FETCH}" ] && do_httpmount
 674         then
 675                 rc=0
 676                 return ${rc}
 677         fi
 678
 679         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 680         then
 681                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 682         fi
 683
 684         [ "${quiet}" != "y" ] && log_begin_msg "Trying netboot from ${NFSROOT}"
 685
 686         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 687         then
 688                 rc=0
 689         elif do_nfsmount
 690         then
 691                 NETBOOT="nfs"
 692                 export NETBOOT
 693                 rc=0
 694         fi
 695
 696         [ "${quiet}" != "y" ] && log_end_msg
 697         return ${rc}
 698 }
 699
 700 do_httpmount ()
 701 {
 702         rc=1
 703         extension=$(echo "${FETCH}" | sed 's/\(.*\)\.\(.*\)/\2/')
 704
 705         case "${extension}" in
 706                 squashfs|tgz|tar)
 707                         [ "${quiet}" != "y" ] && log_begin_msg "Trying wget ${FETCH} -O ${mountpoint}/$(basename ${FETCH})"
 708                         mkdir -p "${mountpoint}/${LIVE_MEDIA_PATH}"
 709                         wget "${FETCH}" -O "${mountpoint}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 710                         [ ${?} -eq 0 ] && rc=0
 711                         [ "${extension}" = "tgz" ] && live_dest="ram"
 712                         ;;
 713
 714                 *)
 715                         [ "${quiet}" != "y" ] && log_begin_msg "Unrecognized archive extension for ${FETCH}"
 716         esac
 717
 718         return ${rc}
 719 }
 720
 721 do_nfsmount ()
 722 {
 723         rc=1
 724
 725         modprobe -q nfs
 726
 727         if [ -z "${NFSOPTS}" ]
 728         then
 729                 NFSOPTS=""
 730         fi
 731
 732         [ "${quiet}" != "y" ] && log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 733
 734         # FIXME: This for loop is an ugly HACK round an nfs bug
 735         for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13
 736         do
 737                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 738                 sleep 1
 739         done
 740
 741         return ${rc}
 742 }
 743
 744 do_cifsmount ()
 745 {
 746         rc=1
 747
 748         if [ -x "/sbin/mount.cifs" ]
 749         then
 750                 if [ -z "${NFSOPTS}" ]
 751                 then
 752                         CIFSOPTS="-ouser=root,password="
 753                 else
 754                         CIFSOPTS="${NFSOPTS}"
 755                 fi
 756
 757                 [ "${quiet}" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 758                 modprobe -q cifs
 759
 760                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 761                 then
 762                         rc=0
 763                 fi
 764         fi
 765
 766         return ${rc}
 767 }
 768
 769 do_snap_copy ()
 770 {
 771         fromdev="${1}"
 772         todir="${2}"
 773         snap_type="${3}"
 774         size=$(fs_size "${fromdev}" "" "used")
 775
 776         if [ -b "${fromdev}" ]
 777         then
 778                 # look for free mem
 779                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 780                 then
 781                         todev=$(cat /proc/mounts | grep -s " $(base_path ${todir}) " | awk '{print $1}' )
 782                         freespace=$(df -k  | grep -s ${todev} | awk '{print $4}')
 783                 else
 784                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ))
 785                 fi
 786
 787                 tomount="/mnt/tmpsnap"
 788
 789                 if [ ! -d "${tomount}" ]
 790                 then
 791                         mkdir -p "${tomount}"
 792                 fi
 793
 794                 fstype=$(get_fstype "${fromdev}")
 795
 796                 if [ -n "${fstype}" ]
 797                 then
 798                         # Copying stuff...
 799                         mount -t "${fstype}" -o ro,noatime "${fromdev}" "${tomount}"
 800                         cp -a "${tomount}"/* ${todir}
 801                         umount "${tomount}"
 802                 else
 803                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 804                 fi
 805
 806                 rmdir "${tomount}"
 807
 808                 if echo ${fromdev} | grep -qs loop
 809                 then
 810                         losetup -d "${fromdev}"
 811                 fi
 812
 813                 return 0
 814         else
 815                 return 1
 816
 817                 [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 818         fi
 819 }
 820
 821 try_snap ()
 822 {
 823         # Look for ${snap_label}.* in block devices and copy the contents to ${snap_mount}
 824         # and remember the device and filename for resync on exit in live-initramfs.init
 825
 826         snap_label="${1}"
 827         snap_mount="${2}"
 828         snap_type="${3}"
 829         snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
 830
 831         if [ ! -z "${snapdata}" ]
 832         then
 833                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 834                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 835                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 836
 837                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|jffs2\)'
 838                 then
 839                         # squashfs, jffs2 or ext2/ext3 snapshot
 840                         dev=$(get_backing_device "${snapback}/${snapfile}")
 841
 842                         if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 843                         then
 844                                 log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 845                                 return 1
 846                         fi
 847                 else
 848                         # cpio.gz snapshot
 849                         if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio -i -u -d 2>/dev/null)
 850                         then
 851                                 log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 852                                 return 1
 853                         fi
 854                 fi
 855
 856                 umount "${snapback}"
 857         else
 858                 dev=$(find_cow_device "${snap_label}")
 859
 860                 if [ -b ${dev} ]
 861                 then
 862                         if echo "${dev}" | grep -qs loop
 863                         then
 864                                 # strange things happens, user confused?
 865                                 snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
 866                                 snapfile=$(basename ${snaploop})
 867                                 snapdev=$(cat /proc/mounts | awk '{print $2,$1}' | grep -es "^$( dirname ${snaploop} )" | cut -f2 -d ' ')
 868                         else
 869                                 snapdev="${dev}"
 870                         fi
 871
 872                         if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 873                         then
 874                                 log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 875                                 return 1
 876                         else
 877                                 if [ -n "${snapfile}" ]
 878                                 then
 879                                         # it was a loop device, user confused
 880                                         umount ${snapdev}
 881                                 fi
 882                         fi
 883                 else
 884                         log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 885                         return 1
 886                 fi
 887         fi
 888
 889         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
 890         return 0
 891 }
 892
 893 setup_unionfs ()
 894 {
 895         image_directory="${1}"
 896         rootmnt="${2}"
 897         addimage_directory="${3}"
 898         modprobe -q -b ${UNIONTYPE}
 899
 900         # run-init can't deal with images in a subdir, but we're going to
 901         # move all of these away before it runs anyway.  No, we're not,
 902         # put them in / since move-mounting them into / breaks mono and
 903         # some other apps.
 904
 905         croot="/"
 906
 907         # Let's just mount the read-only file systems first
 908         rofsstring=""
 909         rofslist=""
 910         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
 911
 912         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
 913         then
 914                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
 915                 roopt="nfsro"
 916         elif [ "${UNIONTYPE}" = "aufs" ]
 917         then
 918                 roopt="rr"
 919         else
 920                 roopt="ro"
 921         fi
 922
 923         # Read image names from ${MODULE}.module if it exists
 924         if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
 925         then
 926                 for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
 927                 do
 928                         image_string="${image_string} ${image_directory}/${IMAGE}"
 929                 done
 930         elif [ -e "${image_directory}/${MODULE}.module" ]
 931         then
 932                 for IMAGE in $(cat ${image_directory}/${MODULE}.module)
 933                 do
 934                         image_string="${image_string} ${image_directory}/${IMAGE}"
 935                 done
 936         else
 937                 # ${MODULE}.module does not exist, create a list of images
 938                 for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
 939                 do
 940                         for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
 941                         do
 942                                 if [ -e "${IMAGE}" ]
 943                                 then
 944                                         image_string="${image_string} ${IMAGE}"
 945                                 fi
 946                         done
 947                 done
 948
 949                 if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
 950                 then
 951                         for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
 952                         do
 953                                 for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
 954                                 do
 955                                         if [ -e "${IMAGE}" ]
 956                                         then
 957                                                 image_string="${image_string} ${IMAGE}"
 958                                         fi
 959                                 done
 960                         done
 961                 fi
 962
 963                 # Now sort the list
 964                 image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
 965         fi
 966
 967         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
 968
 969         mkdir -p "${croot}"
 970
 971         for image in ${image_string}
 972         do
 973                 imagename=$(basename "${image}")
 974
 975                 if [ -d "${image}" ]
 976                 then
 977                         # it is a plain directory: do nothing
 978                         rofsstring="${image}=${roopt}:${rofsstring}"
 979                         rofslist="${image} ${rofslist}"
 980                 elif [ -f "${image}" ]
 981                 then
 982                         backdev=$(get_backing_device "${image}")
 983                         fstype=$(get_fstype "${backdev}")
 984
 985                         if [ "${fstype}" = "unknown" ]
 986                         then
 987                                 panic "Unknown file system type on ${backdev} (${image})"
 988                         fi
 989
 990                         mkdir -p "${croot}/${imagename}"
 991                         echo "debug: Mounting backdev \"${backdev}\" (image = ${image}) on croot/imagename \"${croot}/${imagename}\""
 992                         mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
 993                 fi
 994         done
 995
 996         rofsstring=${rofsstring%:}
 997
 998         mkdir -p /cow
 999
1000         # Looking for "${root_persistence}" device or file
1001         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1002         then
1003                 # Load USB modules
1004                 num_block=$(ls -l /sys/block | wc -l)
1005                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
1006                 do
1007                         modprobe -q -b ${module}
1008                 done
1009
1010                 udevtrigger
1011                 udevsettle
1012
1013                 # For some reason, udevsettle does not block in this scenario,
1014                 # so we sleep for a little while.
1015                 #
1016                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1017                 for timeout in 5 4 3 2 1
1018                 do
1019                         sleep 1
1020
1021                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1022                         then
1023                                 break
1024                         fi
1025                 done
1026
1027                 cowprobe=$(find_cow_device "${root_persistence}")
1028
1029                 if [ -b "${cowprobe}" ]
1030                 then
1031                         cowdevice=${cowprobe}
1032                         cow_fstype=$(get_fstype "${cowprobe}")
1033                 else
1034                         [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the persistent medium"
1035                         cowdevice="tmpfs"
1036                         cow_fstype="tmpfs"
1037                 fi
1038         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1039         then
1040                 # check if there are any nfs options
1041                 if echo ${NFS_COW}|grep -q ','
1042                 then
1043                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1044                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1045                 else
1046                         nfs_cow_opts="-o nolock"
1047                         nfs_cow=${NFS_COW}
1048                 fi
1049                 mac="$(get_mac)"
1050                 if [ -n "${mac}" ]
1051                 then
1052                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1053                         cow_fstype="nfs"
1054                 else
1055                         panic "unable to determine mac address"
1056                 fi
1057         else
1058                 cowdevice="tmpfs"
1059                 cow_fstype="tmpfs"
1060         fi
1061
1062         if [ "${cow_fstype}" = "nfs" ]
1063         then
1064                 [ "${quiet}" != "y" ] && log_begin_msg \
1065                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1066                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1067                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1068         else
1069                 mount -t ${cow_fstype} -o rw,noatime ${cowdevice} /cow || \
1070                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1071         fi
1072
1073         rofscount=$(echo ${rofslist} |wc -w)
1074
1075         if [ -n "${EXPOSED_ROOT}" ]
1076         then
1077                 if [ ${rofscount} -ne 1 ]
1078                 then
1079                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1080                 fi
1081                 exposedrootfs=${rofslist%% }
1082
1083                 mount --bind ${exposedrootfs} ${rootmnt} || \
1084                         panic "bind mount of ${exposedrootfs} failed"
1085
1086                 cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool
1087                         /home /var/lib/live'
1088
1089                 for dir in ${cow_dirs}; do
1090                         mkdir -p /cow${dir}
1091                         mount -t ${UNIONTYPE} \
1092                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1093                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1094                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1095                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1096                 done
1097         else
1098                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1099                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1100                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1101         fi
1102
1103         # tmpfs file systems
1104         mkdir -p "${rootmnt}/live"
1105         mount -t tmpfs tmpfs ${rootmnt}/live
1106
1107         # Adding other custom mounts
1108         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1109         then
1110                 # directly mount /home
1111                 # FIXME: add a custom mounts configurable system
1112                 homecow=$(find_cow_device "${home_persistence}" )
1113
1114                 if [ -b "${homecow}" ]
1115                 then
1116                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1117                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1118                 else
1119                         [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the persistent home medium"
1120                 fi
1121
1122                 # Look for other snapshots to copy in
1123                 try_snap "${root_snapshot_label}" "${rootmnt}" "ROOT"
1124                 try_snap "${home_snapshot_label}" "${rootmnt}/home" "HOME"
1125         fi
1126
1127         if [ -n "${SHOWMOUNTS}" ]
1128         then
1129                 for d in ${rofslist}
1130                 do
1131                         mkdir -p "${rootmnt}/live/${d##*/}"
1132
1133                         case d in
1134                                 *.dir)
1135                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1136                                         ;;
1137
1138                                 *)
1139                                         mount --move "${d}" "${rootmnt}/live/${d##*/}"
1140                                         ;;
1141                         esac
1142                 done
1143         fi
1144
1145         # shows cow fs on /cow for use by live-snapshot
1146         mkdir -p "${rootmnt}/live/cow"
1147         mount -o move /cow "${rootmnt}/live/cow"
1148 }
1149
1150 check_dev ()
1151 {
1152         sysdev="${1}"
1153         devname="${2}"
1154         skip_uuid_check="${3}"
1155
1156         if [ -z "${devname}" ]
1157         then
1158                 devname=$(sys2dev "${sysdev}")
1159         fi
1160
1161         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1162         then
1163                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1164                 devname="${loopdevname}"
1165         fi
1166
1167         fstype=$(get_fstype "${devname}")
1168
1169         if is_supported_fs ${fstype}
1170         then
1171                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1172
1173                 if is_live_path ${mountpoint} && \
1174                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1175                 then
1176                         echo ${mountpoint}
1177                         return 0
1178                 else
1179                         umount ${mountpoint}
1180                 fi
1181         fi
1182
1183         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1184         then
1185                 losetup -d "${loopdevname}"
1186         fi
1187
1188         return 1
1189 }
1190
1191 find_livefs ()
1192 {
1193         timeout="${1}"
1194
1195         # first look at the one specified in the command line
1196         if [ ! -z "${LIVE_MEDIA}" ]
1197         then
1198                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1199                 then
1200                         return 0
1201                 fi
1202         fi
1203
1204         # don't start autodetection before timeout has expired
1205         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1206         then
1207                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1208                 then
1209                         return 1
1210                 fi
1211         fi
1212
1213         # or do the scan of block devices
1214         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram | grep -v 'dm-')
1215         do
1216                 devname=$(sys2dev "${sysblock}")
1217                 fstype=$(get_fstype "${devname}")
1218
1219                 if /lib/udev/cdrom_id ${devname} > /dev/null
1220                 then
1221                         if check_dev "null" "${devname}"
1222                         then
1223                                 return 0
1224                         fi
1225                 elif is_nice_device "${sysblock}"
1226                 then
1227                         for dev in $(subdevices "${sysblock}")
1228                         do
1229                                 if check_dev "${dev}"
1230                                 then
1231                                         return 0
1232                                 fi
1233                         done
1234                 elif [ "${fstype}" = "squashfs" -o \
1235                         "${fstype}" = "ext2" -o \
1236                         "${fstype}" = "ext3" -o \
1237                         "${fstype}" = "jffs2" ]
1238                 then
1239                         # This is an ugly hack situation, the block device has
1240                         # an image directly on it.  It's hopefully
1241                         # live-initramfs, so take it and run with it.
1242                         ln -s "${devname}" "${devname}.${fstype}"
1243                         echo "${devname}.${fstype}"
1244                         return 0
1245                 fi
1246         done
1247
1248         return 1
1249 }
1250
1251 set_usplash_timeout ()
1252 {
1253         if [ -x /sbin/usplash_write ]
1254         then
1255                 /sbin/usplash_write "TIMEOUT 120"
1256         fi
1257 }
1258
1259 mountroot ()
1260 {
1261
1262         if [ -x /scripts/local-top/cryptroot ]; then
1263             /scripts/local-top/cryptroot
1264         fi
1265
1266         exec 6>&1
1267         exec 7>&2
1268         exec > live.log
1269         exec 2>&1
1270         tail -f live.log >&7 &
1271         tailpid="${!}"
1272
1273         Arguments
1274
1275         set_usplash_timeout
1276         [ "${quiet}" != "y" ] && log_begin_msg "Running /scripts/live-premount"
1277         run_scripts /scripts/live-premount
1278         [ "${quiet}" != "y" ] && log_end_msg
1279
1280         # Needed here too because some things (*cough* udev *cough*)
1281         # changes the timeout
1282
1283         set_usplash_timeout
1284
1285         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ]
1286         then
1287                 if do_netmount
1288                 then
1289                         livefs_root="${mountpoint}"
1290                 else
1291                         panic "Unable to find a live file system on the network"
1292                 fi
1293         else
1294                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1295                 then
1296                         # Do a local boot from hd
1297                         livefs_root=${ROOT}
1298                 else
1299                         # Scan local devices for the image
1300                         for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
1301                         do
1302                                 livefs_root=$(find_livefs ${i})
1303
1304                                 if [ -n "${livefs_root}" ]
1305                                 then
1306                                         break
1307                                 fi
1308
1309                                 sleep 1
1310                         done
1311                 fi
1312         fi
1313
1314         if [ -z "${livefs_root}" ]
1315         then
1316                 panic "Unable to find a medium containing a live file system"
1317         fi
1318
1319         if [ "${TORAM}" ]
1320         then
1321                 live_dest="ram"
1322         elif [ "${TODISK}" ]
1323         then
1324                 live_dest="${TODISK}"
1325         fi
1326
1327         if [ "${live_dest}" ]
1328         then
1329                 log_begin_msg "Copying live media to ${live_dest}"
1330                 copy_live_to "${livefs_root}" "${live_dest}"
1331                 log_end_msg
1332         fi
1333
1334         if [ -n "${MODULETORAMFILE}" ]
1335         then
1336                 setup_unionfs "${livefs_root}" "${rootmnt}"
1337         else
1338                 mac="$(get_mac)"
1339                 mac="$(echo ${mac} | sed 's/-//g')"
1340                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1341         fi
1342
1343         log_end_msg
1344
1345         maybe_break live-bottom
1346         [ "${quiet}" != "y" ] && log_begin_msg "Running /scripts/live-bottom"
1347
1348         run_scripts /scripts/live-bottom
1349         [ "${quiet}" != "y" ] && log_end_msg
1350
1351         exec 1>&6 6>&-
1352         exec 2>&7 7>&-
1353         kill ${tailpid}
1354         cp live.log "${rootmnt}/var/log/"
1355 }