defaults/linuxrc

   1 #!/bin/sh
   2
   3 . /etc/initrd.defaults
   4 . /etc/initrd.scripts
   5
   6 splash() {
   7         return 0
   8 }
   9
  10 [ -e /etc/initrd.splash ] && . /etc/initrd.splash
  11
  12 # Clean input/output
  13 exec >${CONSOLE} <${CONSOLE} 2>&1
  14
  15 if [ "$$" != '1' ]
  16 then
  17         echo '/linuxrc has to be run as the init process as the one'
  18         echo 'with a PID of 1. Try adding init="/linuxrc" to the'
  19         echo 'kernel command line or running "exec /linuxrc".'
  20         exit 1
  21 fi
  22
  23 mount -t proc -o noexec,nosuid,nodev proc /proc >/dev/null 2>&1
  24 mount -o remount,rw / >/dev/null 2>&1
  25
  26 # Set up symlinks
  27 /bin/busybox --install -s
  28
  29 if [ "$0" = '/init' ]
  30 then
  31         [ -e /linuxrc ] && rm /linuxrc
  32 fi
  33
  34 quiet_kmsg
  35
  36 CMDLINE=$(cat /proc/cmdline)
  37 # Scan CMDLINE for any specified real_root= or cdroot arguments
  38 FAKE_ROOT=''
  39 REAL_ROOTFLAGS=''
  40 ROOTFSTYPE='auto'
  41 CRYPT_SILENT=0
  42 for x in ${CMDLINE}
  43 do
  44         case "${x}" in
  45                 real_root=*)
  46                         REAL_ROOT=${x#*=}
  47                 ;;
  48                 root=*)
  49                         FAKE_ROOT=${x#*=}
  50                 ;;
  51                 subdir=*)
  52                         SUBDIR=${x#*=}
  53                 ;;
  54                 real_init=*)
  55                         REAL_INIT=${x#*=}
  56                 ;;
  57                 init_opts=*)
  58                         INIT_OPTS=${x#*=}
  59                 ;;
  60                 # Livecd options
  61                 cdroot)
  62                         CDROOT=1
  63                 ;;
  64                 cdroot=*)
  65                         CDROOT=1
  66                         CDROOT_DEV=${x#*=}
  67                 ;;
  68                 cdroot_type=*)
  69                         CDROOT_TYPE=${x#*=}
  70                 ;;
  71                 # Start livecd loop, looptype options
  72                 loop=*)
  73                         LOOP=${x#*=}
  74                 ;;
  75                 looptype=*)
  76                         LOOPTYPE=${x#*=}
  77                 ;;
  78                 isoboot=*)
  79                         ISOBOOT=${x#*=}
  80                 ;;
  81                 # Start Volume manager options
  82                 dolvm)
  83                         USE_LVM_NORMAL=1
  84                 ;;
  85                 dolvm2)
  86                         bad_msg 'Using dolvm2 is deprecated, use dolvm, instead.'
  87                         USE_LVM_NORMAL=1
  88                 ;;
  89                 domdadm)
  90                         USE_MDADM=1
  91                 ;;
  92                 dodmraid)
  93                         USE_DMRAID_NORMAL=1
  94                 ;;
  95                 dodmraid=*)
  96                         DMRAID_OPTS=${x#*=}
  97                         USE_DMRAID_NORMAL=1
  98                 ;;
  99                 # Debug Options
 100                 debug)
 101                         DEBUG='yes'
 102                 ;;
 103                 # Scan delay options
 104                 scandelay=*)
 105                         SDELAY=${x#*=}
 106                 ;;
 107                 scandelay)
 108                         SDELAY=3
 109                 ;;
 110                 # Module no-loads
 111                 doload=*)
 112                         MDOLIST=${x#*=}
 113                         MDOLIST=$(echo ${MDOLIST} | sed -e 's/,/ /g')
 114                 ;;
 115                 nodetect)
 116                         NODETECT=1
 117                 ;;
 118                 noload=*)
 119                         MLIST=${x#*=}
 120                         MLIST="$(echo ${MLIST} | sed -e 's/,/ /g')"
 121                         export MLIST
 122                 ;;
 123                 # Redirect output to a specific tty
 124                 CONSOLE=*|console=*)
 125                         CONSOLE=${x#*=}
 126                         CONSOLE=$(basename ${CONSOLE})
 127 #                       exec >${CONSOLE} <${CONSOLE} 2>&1
 128                 ;;
 129                 # /dev/md
 130                 lvmraid=*)
 131                         RAID_DEVICES="${x#*=}"
 132                         RAID_DEVICES="$(echo ${RAID_DEVICES} | sed -e 's/,/ /g')"
 133                         USE_LVM_NORMAL=1
 134                 ;;
 135                 part=*)
 136                         MDPART=${x#*=}
 137                 ;;
 138                 # NFS
 139                 ip=*)
 140                         IP=${x#*=}
 141                 ;;
 142                 nfsroot=*)
 143                         NFSROOT=${x#*=}
 144                 ;;
 145                 # iSCSI
 146                 iscsi_initiatorname=*)
 147                         ISCSI_INITIATORNAME=${x#*=}
 148                 ;;
 149                 iscsi_target=*)
 150                         ISCSI_TARGET=${x#*=}
 151                 ;;
 152                 iscsi_tgpt=*)
 153                         ISCSI_TGPT=${x#*=}
 154                 ;;
 155                 iscsi_address=*)
 156                         ISCSI_ADDRESS=${x#*=}
 157                 ;;
 158                 iscsi_port=*)
 159                         ISCSI_PORT=${x#*=}
 160                 ;;
 161                 iscsi_username=*)
 162                         ISCSI_USERNAME=${x#*=}
 163                 ;;
 164                 iscsi_password=*)
 165                         ISCSI_PASSWORD=${x#*=}
 166                 ;;
 167                 iscsi_username_in=*)
 168                         ISCSI_USERNAME_IN=${x#*=}
 169                 ;;
 170                 iscsi_password_in=*)
 171                         ISCSI_PASSWORD_IN=${x#*=}
 172                 ;;
 173                 iscsi_debug=*)
 174                         ISCSI_DEBUG=${x#*=}
 175                 ;;
 176                 iscsi_noibft)
 177                         ISCSI_NOIBFT=1
 178                 ;;
 179                 # Crypto
 180                 crypt_root=*)
 181                         CRYPT_ROOT=${x#*=}
 182                 ;;
 183                 crypt_swap=*)
 184                         CRYPT_SWAP=${x#*=}
 185                 ;;
 186                 root_key=*)
 187                         CRYPT_ROOT_KEY=${x#*=}
 188                 ;;
 189                 root_keydev=*)
 190                         CRYPT_ROOT_KEYDEV=${x#*=}
 191                 ;;
 192                 root_trim=*)
 193                         CRYPT_ROOT_TRIM=${x#*=}
 194                 ;;
 195
 196                 swap_key=*)
 197                         CRYPT_SWAP_KEY=${x#*=}
 198                 ;;
 199                 swap_keydev=*)
 200                         CRYPT_SWAP_KEYDEV=${x#*=}
 201                 ;;
 202                 real_resume=*|resume=*)
 203                         REAL_RESUME=${x#*=}
 204                 ;;
 205                 noresume)
 206                         NORESUME=1
 207                 ;;
 208                 crypt_silent)
 209                         CRYPT_SILENT=1
 210                 ;;
 211                 real_rootflags=*)
 212                         REAL_ROOTFLAGS=${x#*=}
 213                 ;;
 214                 rootfstype=*)
 215                         ROOTFSTYPE=${x#*=}
 216                 ;;
 217                 keymap=*)
 218                         keymap=${x#*=}
 219                 ;;
 220                 aufs)
 221                         USE_AUFS_NORMAL=1
 222                 ;;
 223                 unionfs)
 224                         if [ ! -x /sbin/unionfs ]
 225                         then
 226                                 USE_UNIONFS_NORMAL=0
 227                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 228                         else
 229                                 USE_UNIONFS_NORMAL=1
 230                         fi
 231                         ;;
 232                 nounionfs)
 233                         USE_UNIONFS_NORMAL=0
 234                         ;;
 235         esac
 236 done
 237
 238 if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" = '0' \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
 239 then
 240         REAL_ROOT="${FAKE_ROOT}"
 241 fi
 242
 243 splash 'init'
 244
 245 cmdline_hwopts
 246
 247 # Mount sysfs
 248 mount_sysfs
 249
 250 # Setup hotplugging for firmware loading
 251 setup_hotplug
 252
 253 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 254 if [ -z "${DO_modules}" ]
 255 then
 256         good_msg 'Skipping module load; disabled via commandline'
 257 elif [ -d "/lib/modules/${KV}" ]
 258 then
 259         good_msg 'Loading modules'
 260         # Load appropriate kernel modules
 261         if [ "${NODETECT}" != '1' ]
 262         then
 263                 for modules in ${MY_HWOPTS}
 264                 do
 265                         modules_scan ${modules}
 266                 done
 267         fi
 268         # Always eval doload=...
 269         modules_load ${MDOLIST}
 270 else
 271         good_msg 'Skipping module load; no modules in the ramdisk!'
 272 fi
 273
 274 # Apply scan delay if specified
 275 sdelay
 276
 277 # Setup slow USB bits
 278 setup_slowusb
 279
 280 # Start device manager
 281 start_dev_mgr
 282
 283 # if doslowusb is passed, pause other 10 seconds here, after mdev load
 284 [ "${DO_slowusb}" ] && sleep 10
 285
 286 # Start iSCSI
 287 if [ -e /bin/iscsistart ]
 288 then
 289         startiscsi
 290 fi
 291
 292 # Setup btrfs, see bug 303529
 293 setup_btrfsctl
 294
 295 # Setup md device nodes if they dont exist
 296 setup_md_device
 297
 298 # Scan volumes
 299 startVolumes
 300
 301 setup_keymap
 302
 303 # Initialize LUKS root device except for livecd's
 304 if [ "${CDROOT}" != 1 ]
 305 then
 306         startLUKS
 307         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 308         then
 309                 case "${REAL_RESUME}" in
 310                         LABEL=*|UUID=*)
 311
 312                                 RESUME_DEV=""
 313                                 retval=1
 314
 315                                 if [ ${retval} -ne 0 ]; then
 316                                         RESUME_DEV=$(findfs "${REAL_RESUME}" 2>/dev/null)
 317                                         retval=$?
 318                                 fi
 319
 320                                 if [ ${retval} -ne 0 ]; then
 321                                         RESUME_DEV=$(busybox findfs "${REAL_RESUME}" 2>/dev/null)
 322                                         retval=$?
 323                                 fi
 324
 325                                 if [ ${retval} -ne 0 ]; then
 326                                         RESUME_DEV=$(blkid -l -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null)
 327                                         retval=$?
 328                                 fi
 329
 330                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 331                                         good_msg "Detected real_resume=${RESUME_DEV}"
 332                                         REAL_RESUME="${RESUME_DEV}"
 333                                 fi
 334                                 ;;
 335                 esac
 336
 337                 do_resume
 338         fi
 339 fi
 340
 341 mkdir -p "${NEW_ROOT}"
 342 CHROOT="${NEW_ROOT}"
 343
 344 # Run debug shell if requested
 345 rundebugshell
 346
 347 if [ "${CDROOT}" = '1' ]
 348 then
 349         good_msg "Making tmpfs for ${NEW_ROOT}"
 350         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 351
 352         for i in dev mnt mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 353         do
 354                 mkdir -p "${NEW_ROOT}/${i}"
 355                 chmod 755 "${NEW_ROOT}/${i}"
 356         done
 357         [ ! -d "${CDROOT_PATH}" ] && mkdir -p "${CDROOT_PATH}"
 358         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 359         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 360
 361         # For SGI LiveCDs ...
 362         if [ "${LOOPTYPE}" = "sgimips" ]
 363         then
 364                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 365                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 366         fi
 367
 368         # Required for splash to work.  Not an issue with the initrd as this
 369         # device isn't created there and is not needed.
 370         if [ -e /dev/tty1 ]
 371         then
 372                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 373         fi
 374
 375         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 376         then
 377                 bootstrapCD
 378         fi
 379
 380         if [ "${REAL_ROOT}" = '' ]
 381         then
 382                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 383
 384                 COUNTER=0
 385                 while [ ${COUNTER} -lt 3 ]; do
 386                         sleep 3
 387                         echo -n '.'
 388                         let COUNTER=${COUNTER}+1
 389                 done
 390
 391                 sleep 1
 392                 echo -e "${NORMAL}"
 393                 bootstrapCD
 394         fi
 395
 396         if [ "${REAL_ROOT}" = '' ]
 397         then
 398                 # Undo stuff
 399                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 400                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 401                 umount /sys 2>/dev/null
 402
 403                 umount  "${NEW_ROOT}"
 404                 rm -rf  "${NEW_ROOT}/*"
 405
 406                 bad_msg 'Could not find CD to boot, something else needed!'
 407                 CDROOT=0
 408         fi
 409 fi
 410
 411 # Determine root device
 412 good_msg 'Determining root device...'
 413 while true
 414 do
 415         while [ "${got_good_root}" != '1' ]
 416         do
 417                 case "${REAL_ROOT}" in
 418                         LABEL=*|UUID=*)
 419
 420                                 ROOT_DEV=""
 421                                 retval=1
 422
 423                                 if [ ${retval} -ne 0 ]; then
 424                                         ROOT_DEV=$(findfs "${REAL_ROOT}" 2>/dev/null)
 425                                         retval=$?
 426                                 fi
 427
 428                                 if [ ${retval} -ne 0 ]; then
 429                                         ROOT_DEV=$(busybox findfs "${REAL_ROOT}" 2>/dev/null)
 430                                         retval=$?
 431                                 fi
 432
 433                                 if [ ${retval} -ne 0 ]; then
 434                                         ROOT_DEV=$(blkid -l -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null)
 435                                         retval=$?
 436                                 fi
 437
 438                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 439                                         good_msg "Detected real_root=${ROOT_DEV}"
 440                                         REAL_ROOT="${ROOT_DEV}"
 441                                 else
 442                                         prompt_user "REAL_ROOT" "root block device"
 443                                         got_good_root=0
 444                                         continue
 445                                 fi
 446                                 ;;
 447                 esac
 448
 449                 if [ "${REAL_ROOT}" = '' ]
 450                 then
 451                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 452                         prompt_user "REAL_ROOT" "root block device"
 453                         got_good_root=0
 454
 455                 # Check for a block device or /dev/nfs
 456                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 457                 then
 458                         got_good_root=1
 459
 460                 else
 461                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 462                         REAL_ROOT=""
 463                         got_good_root=0
 464                 fi
 465         done
 466
 467
 468         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 469         then
 470                 # CD already mounted; no further checks necessary
 471                 break
 472         elif [ "${LOOPTYPE}" = "sgimips" ]
 473         then
 474                 # sgimips mounts the livecd root partition directly
 475                 # there is no isofs filesystem to worry about
 476                 break
 477         else
 478                 good_msg "Mounting root..."
 479
 480                 # Try to mount the device as ${NEW_ROOT}
 481                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 482                         findnfsmount
 483                 else
 484                         # mount ro so fsck doesn't barf later
 485                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 486                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ro"
 487                                 mount -t ${ROOTFSTYPE} -o ro ${REAL_ROOT} ${NEW_ROOT}
 488                         else
 489                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ro,${REAL_ROOTFLAGS}"
 490                                 mount -t ${ROOTFSTYPE} -o ro,${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 491                         fi
 492                 fi
 493
 494                 # If mount is successful break out of the loop
 495                 # else not a good root and start over.
 496                 if [ "$?" = '0' ]
 497                 then
 498                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 499                         then
 500                                 break
 501                         else
 502                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 503                                 got_good_root=0
 504                                 REAL_ROOT=''
 505                         fi
 506                 else
 507                         bad_msg "Could not mount specified ROOT, try again"
 508                         got_good_root=0
 509                         REAL_ROOT=''
 510                 fi
 511         fi
 512 done
 513 # End determine root device
 514
 515 #verbose_kmsg
 516
 517 # If CD root is set determine the looptype to boot
 518 if [ "${CDROOT}" = '1' ]
 519 then
 520         good_msg 'Determining looptype ...'
 521         cd "${NEW_ROOT}"
 522
 523         # Find loop and looptype
 524         [ -z "${LOOP}" ] && find_loop
 525         [ -z "${LOOPTYPE}" ] && find_looptype
 526
 527         cache_cd_contents
 528
 529         # If encrypted, find key and mount, otherwise mount as usual
 530         if [ -n "${CRYPT_ROOT}" ]
 531         then
 532                 CRYPT_ROOT_KEY="$(head -n 1 "${CDROOT_PATH}"/livecd)"
 533                 CRYPT_ROOT='/dev/loop0'
 534                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 535
 536                 losetup /dev/loop0 "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 537                 test_success 'Preparing loop filesystem'
 538
 539                 startLUKS
 540
 541                 case ${LOOPTYPE} in
 542                         normal)
 543                                 MOUNTTYPE="ext2"
 544                                 ;;
 545                         *)
 546                                 MOUNTTYPE="${LOOPTYPE}"
 547                                 ;;
 548                 esac
 549                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 550                 test_success 'Mount filesystem'
 551                 FS_LOCATION='mnt/livecd'
 552         # Setup the loopback mounts, if unencrypted
 553         else
 554                 if [ "${LOOPTYPE}" = 'normal' ]
 555                 then
 556                         good_msg 'Mounting loop filesystem'
 557                         mount -t ext2 -o loop,ro "${CDROOT_PATH}/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 558                         test_success 'Mount filesystem'
 559                         FS_LOCATION='mnt/livecd'
 560                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 561                 then
 562                         if [ "${USE_AUFS_NORMAL}" != '1' ]; then
 563                                 good_msg 'Mounting squashfs filesystem'
 564                                 mount -t squashfs -o loop,ro "${CDROOT_PATH}/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 565                         else
 566                                 good_msg 'Mounting squashfs & aufs filesystems'
 567                                 setup_squashfs_aufs
 568                                 test_success 'Mount filesystem'
 569                         fi
 570                         FS_LOCATION='mnt/livecd'
 571                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 572                 then
 573                         good_msg 'Mounting gcloop filesystem'
 574                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 575                         test_success 'losetup the loop device'
 576
 577                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 578                         test_success 'Mount the losetup loop device'
 579                         FS_LOCATION='mnt/livecd'
 580                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 581                 then
 582                         FS_LOCATION="${CDROOT_PATH/\/}/${LOOPEXT}${LOOP}"
 583                 elif [ "${LOOPTYPE}" = 'noloop' ]
 584                 then
 585                         FS_LOCATION="${CDROOT_PATH/\/}"
 586                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 587                 then
 588                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 589                         # partition on the cdrom and returns this offset for losetup
 590                         #
 591                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 592                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 593                         #
 594                         # We use the value given to losetup to set /dev/loop0 to point
 595                         # to the liveCD root partition, and then mount /dev/loop0 as
 596                         # the LiveCD rootfs
 597                         good_msg 'Locating the SGI LiveCD Root Partition'
 598                         echo ' ' | \
 599                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 600                                         "${NEW_ROOT}${CDROOT_DEV}" \
 601                                         "${NEW_ROOT}${REAL_ROOT}"
 602                         test_success 'losetup /dev/sr0 /dev/loop0'
 603
 604                         good_msg 'Mounting the Root Partition'
 605                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 606                         test_success 'mount /dev/loop0 /'
 607                         FS_LOCATION='mnt/livecd'
 608                 fi
 609         fi
 610
 611
 612
 613         # Unpacking additional packages from NFS mount
 614         # This is useful for adding kernel modules to /lib
 615         # We do this now, so that additional packages can add whereever they want.
 616         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 617         then
 618                 if [ -e "${CDROOT_PATH}/add" ]
 619                 then
 620                                 for targz in $(ls ${CDROOT_PATH}/add/*.tar.gz)
 621                                 do
 622                                         tarname=$(basename ${targz})
 623                                         good_msg "Adding additional package ${tarname}"
 624                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 625                                 done
 626                 fi
 627         fi
 628
 629
 630         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 631         then
 632                 setup_unionfs ${NEW_ROOT} /${FS_LOCATION}
 633                 CHROOT=/union
 634         elif [ "${USE_AUFS_NORMAL}" != '1' ]; then
 635
 636         good_msg "Copying read-write image contents to tmpfs"
 637         # Copy over stuff that should be writable
 638         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")
 639
 640         # Now we do the links.
 641         for x in ${ROOT_LINKS}
 642         do
 643                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 644                 then
 645                         ln -s "$(readlink ${NEW_ROOT}/${FS_LOCATION}/${x})" "${x}" 2>/dev/null
 646                 else
 647                         # List all subdirectories of x
 648                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 649                         do
 650                                 # Strip the prefix of the FS_LOCATION
 651                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 652
 653                                 # Skip this directory if we already linked a parent directory
 654                                 if [ "${current_parent}" != '' ]; then
 655                                         var=$(echo "${directory}" | grep "^${current_parent}")
 656                                         if [ "${var}" != '' ]; then
 657                                                 continue
 658                                         fi
 659                                 fi
 660                                 # Test if the directory exists already
 661                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 662                                 then
 663                                         # It does exist, link all the individual files
 664                                         for file in $(ls /${NEW_ROOT}/${FS_LOCATION}/${directory})
 665                                         do
 666                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 667                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 668                                                 fi
 669                                         done
 670                                 else
 671                                         # It does not exist, make a link to the livecd
 672                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 673                                         current_parent="${directory}"
 674                                 fi
 675                         done
 676                 fi
 677         done
 678
 679         mkdir initramfs proc tmp sys 2>/dev/null
 680         chmod 1777 tmp
 681
 682         fi
 683
 684         #UML=$(cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||')
 685         #if [ "${UML}" = 'UML' ]
 686         #then
 687         #       # UML Fixes
 688         #       good_msg 'Updating for uml system'
 689         #fi
 690
 691         # Let Init scripts know that we booted from CD
 692         export CDBOOT
 693         CDBOOT=1
 694 else
 695         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 696         then
 697                 mkdir /union_changes
 698                 mount -t tmpfs tmpfs /union_changes
 699                 setup_unionfs /union_changes ${NEW_ROOT}
 700                 mkdir -p ${UNION}/tmp/.initrd
 701         fi
 702 fi
 703
 704 # Mount the additional things as required by udev & systemd
 705 if [ -f ${NEW_ROOT}/etc/initramfs.mounts ]; then
 706         fslist=$(get_mounts_list)
 707 else
 708         # Disabled until the new OpenRC is ready to go.
 709         # Otherwise users will get /usr mounted RO, and it will NOT transition to
 710         # RW correctly.
 711         #fslist="/usr"
 712         fslist=""
 713 fi
 714
 715 for fs in $fslist; do
 716         dev=$(get_mount_device $fs)
 717         # In this case, it's probably part of the filesystem
 718         # and not a mountpoint
 719         [ -z "$dev" ] && continue
 720         opts="ro,$(get_mount_options \"$fs\")"
 721         if ! mount -o ${opts} $dev ${NEW_ROOT}${fs}; then
 722                 rescue_shell "Unable to mount $dev on $fs"
 723         fi
 724 done
 725
 726 # Execute script on the cdrom just before boot to update things if necessary
 727 cdupdate
 728
 729 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 730 then
 731         good_msg "Entering ${SUBDIR} to boot"
 732         CHROOT="${CHROOT}/${SUBDIR}"
 733 fi
 734
 735 verbose_kmsg
 736
 737 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 738
 739 cd "${CHROOT}"
 740 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
 741 echo -ne "${BOLD}.${NORMAL}"
 742
 743 # If devtmpfs is mounted, try move it to the new root
 744 # If that fails, try to unmount all possible mounts of devtmpfs as stuff breaks otherwise
 745 for fs in /dev /sys /proc
 746 do
 747         if grep -qs "$fs" /proc/mounts
 748         then
 749                 if ! mount --move $fs "${CHROOT}"$fs
 750                 then
 751                         umount $fs || echo '*: Failed to move and unmount the ramdisk $fs!'
 752                 fi
 753         fi
 754 done
 755
 756 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 757 then
 758         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 759 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 760 then
 761         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 762 fi
 763
 764 echo -e "${BOLD}.${NORMAL}"
 765
 766 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 767
 768 # If we get here, something bad has happened
 769 splash 'verbose'
 770
 771 echo "A fatal error has probably occured since ${REAL_INIT:-/sbin/init} did not"
 772 echo "boot correctly. Trying to open a shell..."
 773 echo
 774 exec /bin/bash
 775 exec /bin/sh
 776 exec /bin/ash
 777 exec /bin/dash
 778 exec sh