scripts/live

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