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