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' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 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 "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-[^-]*-[ide|scsi|usb])"
 552         then
 553                 return 0
 554         fi
 555
 556         return 1
 557 }
 558
 559 copy_live_to ()
 560 {
 561         copyfrom="${1}"
 562         copytodev="${2}"
 563         copyto="${copyfrom}_swap"
 564
 565         if [ -z "${MODULETORAM}" ]
 566         then
 567                 size=$(fs_size "" ${copyfrom} "used")
 568         else
 569                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
 570
 571                 if [ -f "${MODULETORAMFILE}" ]
 572                 then
 573                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
 574                 else
 575                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
 576                         return 1
 577                 fi
 578         fi
 579
 580         if [ "${copytodev}" = "ram" ]
 581         then
 582                 # copying to ram:
 583                 freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ) )
 584                 mount_options="-o size=${size}k"
 585                 free_string="memory"
 586                 fstype="tmpfs"
 587                 dev="/dev/shm"
 588         else
 589                 # it should be a writable block device
 590                 if [ -b "${copytodev}" ]
 591                 then
 592                         dev="${copytodev}"
 593                         free_string="space"
 594                         fstype=$(get_fstype "${dev}")
 595                         freespace=$(fs_size "${dev}")
 596                 else
 597                         [ "$quiet" != "y" ] && log_warning_msg "${copytodev} is not a block device."
 598                         return 1
 599                 fi
 600         fi
 601
 602         if [ "${freespace}" -lt "${size}" ]
 603         then
 604                 [ "${quiet}" != "y" ] && log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
 605                 return 1
 606         fi
 607
 608         # begin copying (or uncompressing)
 609         mkdir "${copyto}"
 610         echo "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 611         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 612
 613         if [ "${extension}" = "tgz" ]
 614         then
 615                 cd "${copyto}"
 616                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 617                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 618                 mount -r -o move "${copyto}" "${rootmnt}"
 619                 cd "${OLDPWD}"
 620         else
 621                 if [ -n "${MODULETORAMFILE}" ]
 622                 then
 623                         cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
 624                 else
 625                         cp -a ${copyfrom}/* ${copyto}   # "cp -a" from busybox also copies hidden files
 626                 fi
 627
 628                 livefs_root
 629                 umount ${copyfrom}
 630                 mount -r -o move ${copyto} ${copyfrom}
 631         fi
 632
 633         rmdir ${copyto}
 634         return 0
 635 }
 636
 637 do_netmount ()
 638 {
 639         rc=1
 640
 641         modprobe -q af_packet # For DHCP
 642
 643         udevtrigger
 644         udevsettle
 645
 646         ipconfig ${DEVICE} | tee /netboot.config
 647
 648         # source relevant ipconfig output
 649         OLDHOSTNAME=${HOSTNAME}
 650         . /tmp/net-${DEVICE}.conf
 651         [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
 652         export HOSTNAME
 653
 654         if [ "${NFSROOT}" = "auto" ]
 655         then
 656                 NFSROOT=${ROOTSERVER}:${ROOTPATH}
 657         fi
 658
 659         if [ -n "${FETCH}" ] && do_httpmount
 660         then
 661                 rc=0
 662                 return ${rc}
 663         fi
 664
 665         if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
 666         then
 667                 NFSROOT=${ROOTSERVER}:${NFSROOT}
 668         fi
 669
 670         [ "${quiet}" != "y" ] && log_begin_msg "Trying netboot from ${NFSROOT}"
 671
 672         if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
 673         then
 674                 rc=0
 675         elif do_nfsmount
 676         then
 677                 NETBOOT="nfs"
 678                 export NETBOOT
 679                 rc=0
 680         fi
 681
 682         [ "${quiet}" != "y" ] && log_end_msg
 683         return ${rc}
 684 }
 685
 686 do_httpmount ()
 687 {
 688         rc=1
 689         extension=$(echo "${FETCH}" | sed 's/\(.*\)\.\(.*\)/\2/')
 690
 691         case "${extension}" in
 692                 squashfs|tgz|tar)
 693                         [ "${quiet}" != "y" ] && log_begin_msg "Trying wget ${FETCH} -O ${mountpoint}/$(basename ${FETCH})"
 694                         mkdir -p "${mountpoint}/${LIVE_MEDIA_PATH}"
 695                         wget "${FETCH}" -O "${mountpoint}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
 696                         [ ${?} -eq 0 ] && rc=0
 697                         [ "${extension}" = "tgz" ] && live_dest="ram"
 698                         ;;
 699
 700                 *)
 701                         [ "${quiet}" != "y" ] && log_begin_msg "Unrecognized archive extension for ${FETCH}"
 702         esac
 703
 704         return ${rc}
 705 }
 706
 707 do_nfsmount ()
 708 {
 709         rc=1
 710
 711         modprobe -q nfs
 712
 713         if [ -z "${NFSOPTS}" ]
 714         then
 715                 NFSOPTS=""
 716         fi
 717
 718         [ "${quiet}" != "y" ] && log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 719
 720         # FIXME: This for loop is an ugly HACK round an nfs bug
 721         for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13
 722         do
 723                 nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 724                 sleep 1
 725         done
 726
 727         return ${rc}
 728 }
 729
 730 do_cifsmount ()
 731 {
 732         rc=1
 733
 734         if [ -x "/sbin/mount.cifs" ]
 735         then
 736                 if [ -z "${NFSOPTS}" ]
 737                 then
 738                         CIFSOPTS="-ouser=root,password="
 739                 else
 740                         CIFSOPTS="${NFSOPTS}"
 741                 fi
 742
 743                 [ "${quiet}" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 744                 modprobe -q cifs
 745
 746                 if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 747                 then
 748                         rc=0
 749                 fi
 750         fi
 751
 752         return ${rc}
 753 }
 754
 755 do_snap_copy ()
 756 {
 757         fromdev="${1}"
 758         todir="${2}"
 759         snap_type="${3}"
 760         size=$(fs_size "${fromdev}" "" "used")
 761
 762         if [ -b "${fromdev}" ]
 763         then
 764                 # look for free mem
 765                 if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
 766                 then
 767                         todev=$(cat /proc/mounts | grep -s " $(base_path ${todir}) " | awk '{print $1}' )
 768                         freespace=$(df -k  | grep -s ${todev} | awk '{print $4}')
 769                 else
 770                         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ))
 771                 fi
 772
 773                 tomount="/mnt/tmpsnap"
 774
 775                 if [ ! -d "${tomount}" ]
 776                 then
 777                         mkdir -p "${tomount}"
 778                 fi
 779
 780                 fstype=$(get_fstype "${fromdev}")
 781
 782                 if [ -n "${fstype}" ]
 783                 then
 784                         # Copying stuff...
 785                         mount -t "${fstype}" -o ro,noatime "${fromdev}" "${tomount}"
 786                         cp -a "${tomount}"/* ${todir}
 787                         umount "${tomount}"
 788                 else
 789                         log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 790                 fi
 791
 792                 rmdir "${tomount}"
 793
 794                 if echo ${fromdev} | grep -qs loop
 795                 then
 796                         losetup -d "${fromdev}"
 797                 fi
 798
 799                 return 0
 800         else
 801                 return 1
 802
 803                 [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 804         fi
 805 }
 806
 807 try_snap ()
 808 {
 809         # Look for ${snap_label}.* in block devices and copy the contents to ${snap_mount}
 810         # and remember the device and filename for resync on exit in live-initramfs.init
 811
 812         snap_label="${1}"
 813         snap_mount="${2}"
 814         snap_type="${3}"
 815         snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
 816
 817         if [ ! -z "${snapdata}" ]
 818         then
 819                 snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 820                 snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 821                 snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 822
 823                 if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|jffs2\)'
 824                 then
 825                         # squashfs, jffs2 or ext2/ext3 snapshot
 826                         dev=$(get_backing_device "${snapback}/${snapfile}")
 827
 828                         if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 829                         then
 830                                 log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 831                                 return 1
 832                         fi
 833                 else
 834                         # cpio.gz snapshot
 835                         if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio -i -u -d 2>/dev/null)
 836                         then
 837                                 log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 838                                 return 1
 839                         fi
 840                 fi
 841
 842                 umount "${snapback}"
 843         else
 844                 dev=$(find_cow_device "${snap_label}")
 845
 846                 if [ -b ${dev} ]
 847                 then
 848                         if echo "${dev}" | grep -qs loop
 849                         then
 850                                 # strange things happens, user confused?
 851                                 snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
 852                                 snapfile=$(basename ${snaploop})
 853                                 snapdev=$(cat /proc/mounts | awk '{print $2,$1}' | grep -es "^$( dirname ${snaploop} )" | cut -f2 -d ' ')
 854                         else
 855                                 snapdev="${dev}"
 856                         fi
 857
 858                         if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
 859                         then
 860                                 log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 861                                 return 1
 862                         else
 863                                 if [ -n "${snapfile}" ]
 864                                 then
 865                                         # it was a loop device, user confused
 866                                         umount ${snapdev}
 867                                 fi
 868                         fi
 869                 else
 870                         log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 871                         return 1
 872                 fi
 873         fi
 874
 875         echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
 876         return 0
 877 }
 878
 879 setup_unionfs ()
 880 {
 881         image_directory="${1}"
 882         rootmnt="${2}"
 883         addimage_directory="${3}"
 884         modprobe -q -b ${UNIONTYPE}
 885
 886         # run-init can't deal with images in a subdir, but we're going to
 887         # move all of these away before it runs anyway.  No, we're not,
 888         # put them in / since move-mounting them into / breaks mono and
 889         # some other apps.
 890
 891         croot="/"
 892
 893         # Let's just mount the read-only file systems first
 894         rofsstring=""
 895         rofslist=""
 896         minor_kernel_version=$(uname -r|cut -c 5-|sed 's/[^0-9].*//')
 897
 898         if [ "${NETBOOT}" = "nfs" ] && [ "${minor_kernel_version}" -lt 22 ]
 899         then
 900                 # go aroung a bug in nfs-unionfs locking for unionfs <= 1.4
 901                 roopt="nfsro"
 902         elif [ "${UNIONTYPE}" = "aufs" ]
 903         then
 904                 roopt="rr"
 905         else
 906                 roopt="ro"
 907         fi
 908
 909         # Read image names from ${MODULE}.module if it exists
 910         if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
 911         then
 912                 for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
 913                 do
 914                         image_string="${image_string} ${image_directory}/${IMAGE}"
 915                 done
 916         elif [ -e "${image_directory}/${MODULE}.module" ]
 917         then
 918                 for IMAGE in $(cat ${image_directory}/${MODULE}.module)
 919                 do
 920                         image_string="${image_string} ${image_directory}/${IMAGE}"
 921                 done
 922         else
 923                 # ${MODULE}.module does not exist, create a list of images
 924                 for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
 925                 do
 926                         for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
 927                         do
 928                                 if [ -e "${IMAGE}" ]
 929                                 then
 930                                         image_string="${image_string} ${IMAGE}"
 931                                 fi
 932                         done
 933                 done
 934
 935                 if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
 936                 then
 937                         for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
 938                         do
 939                                 for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
 940                                 do
 941                                         if [ -e "${IMAGE}" ]
 942                                         then
 943                                                 image_string="${image_string} ${IMAGE}"
 944                                         fi
 945                                 done
 946                         done
 947                 fi
 948
 949                 # Now sort the list
 950                 image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
 951         fi
 952
 953         [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
 954
 955         mkdir -p "${croot}"
 956
 957         for image in ${image_string}
 958         do
 959                 imagename=$(basename "${image}")
 960
 961                 if [ -d "${image}" ]
 962                 then
 963                         # it is a plain directory: do nothing
 964                         rofsstring="${image}=${roopt}:${rofsstring}"
 965                         rofslist="${image} ${rofslist}"
 966                 elif [ -f "${image}" ]
 967                 then
 968                         backdev=$(get_backing_device "${image}" "-r")
 969                         fstype=$(get_fstype "${backdev}")
 970
 971                         if [ "${fstype}" = "unknown" ]
 972                         then
 973                                 panic "Unknown file system type on ${backdev} (${image})"
 974                         fi
 975
 976                         mkdir -p "${croot}/${imagename}"
 977                         echo "debug: Mounting backdev \"${backdev}\" (image = ${image}) on croot/imagename \"${croot}/${imagename}\""
 978                         mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
 979                 fi
 980         done
 981
 982         rofsstring=${rofsstring%:}
 983
 984         mkdir -p /cow
 985
 986         # Looking for "${root_persistence}" device or file
 987         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
 988         then
 989                 # Load USB modules
 990                 num_block=$(ls -l /sys/block | wc -l)
 991                 for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
 992                 do
 993                         modprobe -q -b ${module}
 994                 done
 995
 996                 udevtrigger
 997                 udevsettle
 998
 999                 # For some reason, udevsettle does not block in this scenario,
1000                 # so we sleep for a little while.
1001                 #
1002                 # See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
1003                 for timeout in 5 4 3 2 1
1004                 do
1005                         sleep 1
1006
1007                         if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
1008                         then
1009                                 break
1010                         fi
1011                 done
1012
1013                 cowprobe=$(find_cow_device "${root_persistence}")
1014
1015                 if [ -b "${cowprobe}" ]
1016                 then
1017                         cowdevice=${cowprobe}
1018                         cow_fstype=$(get_fstype "${cowprobe}")
1019                 else
1020                         [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the persistent medium"
1021                         cowdevice="tmpfs"
1022                         cow_fstype="tmpfs"
1023                 fi
1024         elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
1025         then
1026                 # check if there are any nfs options
1027                 if echo ${NFS_COW}|grep -q ','
1028                 then
1029                         nfs_cow_opts="-o nolock,$(echo ${NFS_COW}|cut -d, -f2-)"
1030                         nfs_cow=$(echo ${NFS_COW}|cut -d, -f1)
1031                 else
1032                         nfs_cow_opts="-o nolock"
1033                         nfs_cow=${NFS_COW}
1034                 fi
1035                 mac="$(get_mac)"
1036                 if [ -n "${mac}" ]
1037                 then
1038                         cowdevice=$(echo ${nfs_cow}|sed "s/client_mac_address/${mac}/")
1039                         cow_fstype="nfs"
1040                 else
1041                         panic "unable to determine mac address"
1042                 fi
1043         else
1044                 cowdevice="tmpfs"
1045                 cow_fstype="tmpfs"
1046         fi
1047
1048         if [ "${cow_fstype}" = "nfs" ]
1049         then
1050                 [ "${quiet}" != "y" ] && log_begin_msg \
1051                         "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
1052                 nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
1053                         panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
1054         else
1055                 mount -t ${cow_fstype} -o rw,noatime ${cowdevice} /cow || \
1056                         panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
1057         fi
1058
1059         rofscount=$(echo ${rofslist} |wc -w)
1060
1061         if [ -n "${EXPOSED_ROOT}" ]
1062         then
1063                 if [ ${rofscount} -ne 1 ]
1064                 then
1065                         panic "only one RO file system supported with exposedroot: ${rofslist}"
1066                 fi
1067                 exposedrootfs=${rofslist%% }
1068
1069                 mount --bind ${exposedrootfs} ${rootmnt} || \
1070                         panic "bind mount of ${exposedrootfs} failed"
1071
1072                 cow_dirs='/var/tmp /var/lock /var/run /var/log /var/spool
1073                         /home /var/lib/live'
1074
1075                 for dir in ${cow_dirs}; do
1076                         mkdir -p /cow${dir}
1077                         mount -t ${UNIONTYPE} \
1078                                 -o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
1079                                 ${UNIONTYPE} "${rootmnt}${dir}" || \
1080                                 panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
1081                                         rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
1082                 done
1083         else
1084                 mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
1085                         ${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
1086                         ${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
1087         fi
1088
1089         # tmpfs file systems
1090         mkdir -p "${rootmnt}/live"
1091         mount -t tmpfs tmpfs ${rootmnt}/live
1092
1093         # Adding other custom mounts
1094         if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
1095         then
1096                 # directly mount /home
1097                 # FIXME: add a custom mounts configurable system
1098                 homecow=$(find_cow_device "${home_persistence}" )
1099
1100                 if [ -b "${homecow}" ]
1101                 then
1102                         mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
1103                         export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
1104                 else
1105                         [ "${quiet}" != "y" ] && log_warning_msg "Unable to find the persistent home medium"
1106                 fi
1107
1108                 # Look for other snapshots to copy in
1109                 try_snap "${root_snapshot_label}" "${rootmnt}" "ROOT"
1110                 try_snap "${home_snapshot_label}" "${rootmnt}/home" "HOME"
1111         fi
1112
1113         if [ -n "${SHOWMOUNTS}" ]
1114         then
1115                 for d in ${rofslist}
1116                 do
1117                         mkdir -p "${rootmnt}/live/${d##*/}"
1118
1119                         case d in
1120                                 *.dir)
1121                                         # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
1122                                         ;;
1123
1124                                 *)
1125                                         mount -o move "${d}" "${rootmnt}/live/${d##*/}"
1126                                         ;;
1127                         esac
1128                 done
1129         fi
1130
1131         # shows cow fs on /cow for use by live-snapshot
1132         mkdir -p "${rootmnt}/live/cow"
1133         mount -o move /cow "${rootmnt}/live/cow"
1134 }
1135
1136 check_dev ()
1137 {
1138         sysdev="${1}"
1139         devname="${2}"
1140         skip_uuid_check="${3}"
1141
1142         if [ -z "${devname}" ]
1143         then
1144                 devname=$(sys2dev "${sysdev}")
1145         fi
1146
1147         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1148         then
1149                 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
1150                 devname="${loopdevname}"
1151         fi
1152
1153         if [ -d "${devname}" ]
1154         then
1155                 mount -o bind "${devname}" $mountpoint || continue
1156
1157                 if is_live_path $mountpoint
1158                 then
1159                         echo $mountpoint
1160                         return 0
1161                 else
1162                         umount $mountpoint
1163                 fi
1164         fi
1165
1166         fstype=$(get_fstype "${devname}")
1167
1168         if is_supported_fs ${fstype}
1169         then
1170                 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
1171
1172                 if is_live_path ${mountpoint} && \
1173                         ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
1174                 then
1175                         echo ${mountpoint}
1176                         return 0
1177                 else
1178                         umount ${mountpoint}
1179                 fi
1180         fi
1181
1182         if [ -n "${LIVE_MEDIA_OFFSET}" ]
1183         then
1184                 losetup -d "${loopdevname}"
1185         fi
1186
1187         return 1
1188 }
1189
1190 find_livefs ()
1191 {
1192         timeout="${1}"
1193
1194         # first look at the one specified in the command line
1195         if [ ! -z "${LIVE_MEDIA}" ]
1196         then
1197                 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
1198                 then
1199                         return 0
1200                 fi
1201         fi
1202
1203         # don't start autodetection before timeout has expired
1204         if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
1205         then
1206                 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
1207                 then
1208                         return 1
1209                 fi
1210         fi
1211
1212         # or do the scan of block devices
1213         for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram | grep -v 'dm-' | grep -v fd )
1214         do
1215                 devname=$(sys2dev "${sysblock}")
1216                 fstype=$(get_fstype "${devname}")
1217
1218                 if /lib/udev/cdrom_id ${devname} > /dev/null
1219                 then
1220                         if check_dev "null" "${devname}"
1221                         then
1222                                 return 0
1223                         fi
1224                 elif is_nice_device "${sysblock}"
1225                 then
1226                         for dev in $(subdevices "${sysblock}")
1227                         do
1228                                 if check_dev "${dev}"
1229                                 then
1230                                         return 0
1231                                 fi
1232                         done
1233                 elif [ "${fstype}" = "squashfs" -o \
1234                         "${fstype}" = "ext2" -o \
1235                         "${fstype}" = "ext3" -o \
1236                         "${fstype}" = "jffs2" ]
1237                 then
1238                         # This is an ugly hack situation, the block device has
1239                         # an image directly on it.  It's hopefully
1240                         # live-initramfs, so take it and run with it.
1241                         ln -s "${devname}" "${devname}.${fstype}"
1242                         echo "${devname}.${fstype}"
1243                         return 0
1244                 fi
1245         done
1246
1247         return 1
1248 }
1249
1250 set_usplash_timeout ()
1251 {
1252         if [ -x /sbin/usplash_write ]
1253         then
1254                 /sbin/usplash_write "TIMEOUT 120"
1255         fi
1256 }
1257
1258 mountroot ()
1259 {
1260
1261         if [ -x /scripts/local-top/cryptroot ]; then
1262             /scripts/local-top/cryptroot
1263         fi
1264
1265         exec 6>&1
1266         exec 7>&2
1267         exec > live.log
1268         exec 2>&1
1269         tail -f live.log >&7 &
1270         tailpid="${!}"
1271
1272         Arguments
1273
1274         set_usplash_timeout
1275         [ "${quiet}" != "y" ] && log_begin_msg "Running /scripts/live-premount"
1276         run_scripts /scripts/live-premount
1277         [ "${quiet}" != "y" ] && log_end_msg
1278
1279         # Needed here too because some things (*cough* udev *cough*)
1280         # changes the timeout
1281
1282         set_usplash_timeout
1283
1284         if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ]
1285         then
1286                 if do_netmount
1287                 then
1288                         livefs_root="${mountpoint}"
1289                 else
1290                         panic "Unable to find a live file system on the network"
1291                 fi
1292         else
1293                 if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
1294                 then
1295                         # Do a local boot from hd
1296                         livefs_root=${ROOT}
1297                 else
1298                         # Scan local devices for the image
1299                         for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
1300                         do
1301                                 livefs_root=$(find_livefs ${i})
1302
1303                                 if [ -n "${livefs_root}" ]
1304                                 then
1305                                         break
1306                                 fi
1307
1308                                 sleep 1
1309                         done
1310                 fi
1311         fi
1312
1313         if [ -z "${livefs_root}" ]
1314         then
1315                 panic "Unable to find a medium containing a live file system"
1316         fi
1317
1318         if [ "${TORAM}" ]
1319         then
1320                 live_dest="ram"
1321         elif [ "${TODISK}" ]
1322         then
1323                 live_dest="${TODISK}"
1324         fi
1325
1326         if [ "${live_dest}" ]
1327         then
1328                 log_begin_msg "Copying live media to ${live_dest}"
1329                 copy_live_to "${livefs_root}" "${live_dest}"
1330                 log_end_msg
1331         fi
1332
1333         if [ -n "${MODULETORAMFILE}" ]
1334         then
1335                 setup_unionfs "${livefs_root}" "${rootmnt}"
1336         else
1337                 mac="$(get_mac)"
1338                 mac="$(echo ${mac} | sed 's/-//g')"
1339                 mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
1340         fi
1341
1342         log_end_msg
1343
1344         maybe_break live-bottom
1345         [ "${quiet}" != "y" ] && log_begin_msg "Running /scripts/live-bottom"
1346
1347         run_scripts /scripts/live-bottom
1348         [ "${quiet}" != "y" ] && log_end_msg
1349
1350         exec 1>&6 6>&-
1351         exec 2>&7 7>&-
1352         kill ${tailpid}
1353         cp live.log "${rootmnt}/var/log/"
1354 }