dracut.sh

   1 #!/bin/bash
   2 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
   3 # ex: ts=8 sw=4 sts=4 et filetype=sh
   4 #
   5 # Generator script for a dracut initramfs
   6 # Tries to retain some degree of compatibility with the command line
   7 # of the various mkinitrd implementations out there
   8 #
   9
  10 # Copyright 2005-2010 Red Hat, Inc.  All rights reserved.
  11 #
  12 # This program is free software; you can redistribute it and/or modify
  13 # it under the terms of the GNU General Public License as published by
  14 # the Free Software Foundation; either version 2 of the License, or
  15 # (at your option) any later version.
  16 #
  17 # This program is distributed in the hope that it will be useful,
  18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 # GNU General Public License for more details.
  21 #
  22 # You should have received a copy of the GNU General Public License
  23 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24 #
  25
  26 # store for logging
  27 dracut_args="$@"
  28
  29 set -o pipefail
  30
  31 usage() {
  32     [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
  33     if [[ -f $dracutbasedir/dracut-version.sh ]]; then
  34         . $dracutbasedir/dracut-version.sh
  35     fi
  36
  37 #                                                       80x25 linebreak here ^
  38     cat << EOF
  39 Usage: $0 [OPTION]... <initramfs> <kernel-version>
  40
  41 Version: $DRACUT_VERSION
  42
  43 Creates initial ramdisk images for preloading modules
  44
  45   -f, --force           Overwrite existing initramfs file.
  46   -m, --modules [LIST]  Specify a space-separated list of dracut modules to
  47                          call when building the initramfs. Modules are located
  48                          in /usr/lib/dracut/modules.d.
  49   -o, --omit [LIST]     Omit a space-separated list of dracut modules.
  50   -a, --add [LIST]      Add a space-separated list of dracut modules.
  51   -d, --drivers [LIST]  Specify a space-separated list of kernel modules to
  52                         exclusively include in the initramfs.
  53   --add-drivers [LIST] Specify a space-separated list of kernel
  54                         modules to add to the initramfs.
  55   --omit-drivers [LIST] Specify a space-separated list of kernel
  56                         modules not to add to the initramfs.
  57   --filesystems [LIST]  Specify a space-separated list of kernel filesystem
  58                         modules to exclusively include in the generic
  59                         initramfs.
  60   -k, --kmoddir [DIR]   Specify the directory, where to look for kernel
  61                         modules
  62   --fwdir [DIR]         Specify additional directories, where to look for
  63                         firmwares, separated by :
  64   --kernel-only         Only install kernel drivers and firmware files
  65   --no-kernel           Do not install kernel drivers and firmware files
  66   --strip               Strip binaries in the initramfs
  67   --nostrip             Do not strip binaries in the initramfs (default)
  68   --prefix [DIR]        Prefix initramfs files with [DIR]
  69   --noprefix            Do not prefix initramfs files (default)
  70   --mdadmconf           Include local /etc/mdadm.conf
  71   --nomdadmconf         Do not include local /etc/mdadm.conf
  72   --lvmconf             Include local /etc/lvm/lvm.conf
  73   --nolvmconf           Do not include local /etc/lvm/lvm.conf
  74   --fscks [LIST]        Add a space-separated list of fsck helpers.
  75   --nofscks             Inhibit installation of any fsck helpers.
  76   -h, --help            This message
  77   --debug               Output debug information of the build process
  78   --profile             Output profile information of the build process
  79   -L, --stdlog [0-6]    Specify logging level (to standard error)
  80                          0 - suppress any messages
  81                          1 - only fatal errors
  82                          2 - all errors
  83                          3 - warnings
  84                          4 - info (default)
  85                          5 - debug info (here starts lots of output)
  86                          6 - trace info (and even more)
  87   -v, --verbose         Increase verbosity level (default is info(4))
  88   -q, --quiet           Decrease verbosity level (default is info(4))
  89   -c, --conf [FILE]     Specify configuration file to use.
  90                          Default: /etc/dracut.conf
  91   --confdir [DIR]       Specify configuration directory to use *.conf files
  92                          from. Default: /etc/dracut.conf.d
  93   --tmpdir [DIR]        Temporary directory to be used instead of default
  94                          /var/tmp.
  95   -l, --local           Local mode. Use modules from the current working
  96                          directory instead of the system-wide installed in
  97                          /usr/lib/dracut/modules.d.
  98                          Useful when running dracut from a git checkout.
  99   -H, --hostonly        Host-Only mode: Install only what is needed for
 100                          booting the local host instead of a generic host.
 101   --no-hostonly         Disables Host-Only mode
 102   --fstab               Use /etc/fstab to determine the root device.
 103   --add-fstab [FILE]    Add file to the initramfs fstab
 104   --mount "[DEV] [MP] [FSTYPE] [FSOPTS]"
 105                         Mount device [DEV] on mountpoint [MP] with filesystem
 106                         [FSTYPE] and options [FSOPTS] in the initramfs
 107   -i, --include [SOURCE] [TARGET]
 108                         Include the files in the SOURCE directory into the
 109                          Target directory in the final initramfs.
 110                         If SOURCE is a file, it will be installed to TARGET
 111                          in the final initramfs.
 112   -I, --install [LIST]  Install the space separated list of files into the
 113                          initramfs.
 114   --gzip                Compress the generated initramfs using gzip.
 115                          This will be done by default, unless another
 116                          compression option or --no-compress is passed.
 117   --bzip2               Compress the generated initramfs using bzip2.
 118                          Make sure your kernel has bzip2 decompression support
 119                          compiled in, otherwise you will not be able to boot.
 120   --lzma                Compress the generated initramfs using lzma.
 121                          Make sure your kernel has lzma support compiled in,
 122                          otherwise you will not be able to boot.
 123   --xz                  Compress the generated initramfs using xz.
 124                          Make sure that your kernel has xz support compiled
 125                          in, otherwise you will not be able to boot.
 126   --compress [COMPRESSION] Compress the generated initramfs with the
 127                          passed compression program.  Make sure your kernel
 128                          knows how to decompress the generated initramfs,
 129                          otherwise you will not be able to boot.
 130   --no-compress         Do not compress the generated initramfs.  This will
 131                          override any other compression options.
 132   --list-modules        List all available dracut modules.
 133   -M, --show-modules    Print included module's name to standard output during
 134                          build.
 135   --keep                Keep the temporary initramfs for debugging purposes
 136   --printsize           Print out the module install size
 137   --sshkey [SSHKEY]     Add ssh key to initramfs (use with ssh-client module)
 138
 139 If [LIST] has multiple arguments, then you have to put these in quotes.
 140 For example:
 141 # dracut --add-drivers "module1 module2"  ...
 142 EOF
 143 }
 144
 145 # function push()
 146 # push values to a stack
 147 # $1 = stack variable
 148 # $2.. values
 149 # example:
 150 # push stack 1 2 "3 4"
 151 push() {
 152     local __stack=$1; shift
 153     for i in "$@"; do
 154         eval ${__stack}'[${#'${__stack}'[@]}]="$i"'
 155     done
 156 }
 157
 158 # function pop()
 159 # pops the last value from a stack
 160 # assigns value to second argument variable
 161 # or echo to stdout, if no second argument
 162 # $1 = stack variable
 163 # $2 = optional variable to store the value
 164 # example:
 165 # pop stack val
 166 # val=$(pop stack)
 167 pop() {
 168     local __stack=$1; shift
 169     local __resultvar=$1
 170     local myresult;
 171     # check for empty stack
 172     eval '[[ ${#'${__stack}'[@]} -eq 0 ]] && return 1'
 173
 174     eval myresult='${'${__stack}'[${#'${__stack}'[@]}-1]}'
 175
 176     if [[ "$__resultvar" ]]; then
 177         eval $__resultvar="'$myresult'"
 178     else
 179         echo "$myresult"
 180     fi
 181     eval unset ${__stack}'[${#'${__stack}'[@]}-1]'
 182     return 0
 183 }
 184
 185 # Little helper function for reading args from the commandline.
 186 # it automatically handles -a b and -a=b variants, and returns 1 if
 187 # we need to shift $3.
 188 read_arg() {
 189     # $1 = arg name
 190     # $2 = arg value
 191     # $3 = arg parameter
 192     local rematch='^[^=]*=(.*)$'
 193     if [[ $2 =~ $rematch ]]; then
 194         read "$1" <<< "${BASH_REMATCH[1]}"
 195     else
 196         read "$1" <<< "$3"
 197         # There is no way to shift our callers args, so
 198         # return 1 to indicate they should do it instead.
 199         return 1
 200     fi
 201 }
 202
 203 # Little helper function for reading args from the commandline to a stack.
 204 # it automatically handles -a b and -a=b variants, and returns 1 if
 205 # we need to shift $3.
 206 push_arg() {
 207     # $1 = arg name
 208     # $2 = arg value
 209     # $3 = arg parameter
 210     local rematch='^[^=]*=(.*)$'
 211     if [[ $2 =~ $rematch ]]; then
 212         push "$1" "${BASH_REMATCH[1]}"
 213     else
 214         push "$1" "$3"
 215         # There is no way to shift our callers args, so
 216         # return 1 to indicate they should do it instead.
 217         return 1
 218     fi
 219 }
 220
 221 verbosity_mod_l=0
 222 unset kernel
 223 unset outfile
 224
 225 while (($# > 0)); do
 226     case ${1%%=*} in
 227         -a|--add)      push_arg add_dracutmodules_l  "$@" || shift;;
 228         --force-add)   push_arg force_add_dracutmodules_l  "$@" || shift;;
 229         --add-drivers) push_arg add_drivers_l        "$@" || shift;;
 230         --omit-drivers) push_arg omit_drivers_l      "$@" || shift;;
 231         -m|--modules)  push_arg dracutmodules_l      "$@" || shift;;
 232         -o|--omit)     push_arg omit_dracutmodules_l "$@" || shift;;
 233         -d|--drivers)  push_arg drivers_l            "$@" || shift;;
 234         --filesystems) push_arg filesystems_l        "$@" || shift;;
 235         -I|--install)  push_arg install_items_l      "$@" || shift;;
 236         --fwdir)       push_arg fw_dir_l             "$@" || shift;;
 237         --libdirs)     push_arg libdirs_l            "$@" || shift;;
 238         --fscks)       push_arg fscks_l              "$@" || shift;;
 239         --add-fstab)   push_arg add_fstab_l          "$@" || shift;;
 240         --mount)       push_arg fstab_lines          "$@" || shift;;
 241         --nofscks)     nofscks_l="yes";;
 242         -k|--kmoddir)  read_arg drivers_dir_l        "$@" || shift;;
 243         -c|--conf)     read_arg conffile             "$@" || shift;;
 244         --confdir)     read_arg confdir              "$@" || shift;;
 245         --tmpdir)      read_arg tmpdir_l             "$@" || shift;;
 246         -L|--stdlog)   read_arg stdloglvl_l          "$@" || shift;;
 247         --compress)    read_arg compress_l           "$@" || shift;;
 248         --prefix)      read_arg prefix_l             "$@" || shift;;
 249         -f|--force)    force=yes;;
 250         --kernel-only) kernel_only="yes"; no_kernel="no";;
 251         --no-kernel)   kernel_only="no"; no_kernel="yes";;
 252         --strip)       do_strip_l="yes";;
 253         --nostrip)     do_strip_l="no";;
 254         --noprefix)    prefix_l="/";;
 255         --mdadmconf)   mdadmconf_l="yes";;
 256         --nomdadmconf) mdadmconf_l="no";;
 257         --lvmconf)     lvmconf_l="yes";;
 258         --nolvmconf)   lvmconf_l="no";;
 259         --debug)       debug="yes";;
 260         --profile)     profile="yes";;
 261         --sshkey)      read_arg sshkey   "$@" || shift;;
 262         -v|--verbose)  ((verbosity_mod_l++));;
 263         -q|--quiet)    ((verbosity_mod_l--));;
 264         -l|--local)
 265                        allowlocal="yes"
 266                        [[ -f "$(readlink -f ${0%/*})/dracut-functions.sh" ]] \
 267                            && dracutbasedir="$(readlink -f ${0%/*})"
 268                        ;;
 269         -H|--hostonly) hostonly_l="yes" ;;
 270         --no-hostonly) hostonly_l="no" ;;
 271         --fstab)       use_fstab_l="yes" ;;
 272         -h|--help)     usage; exit 1 ;;
 273         -i|--include)  push include_src "$2"
 274                        push include_target "$3"
 275                        shift 2;;
 276         --bzip2)       compress_l="bzip2";;
 277         --lzma)        compress_l="lzma";;
 278         --xz)          compress_l="xz";;
 279         --no-compress) _no_compress_l="cat";;
 280         --gzip)        compress_l="gzip";;
 281         --list-modules)
 282             do_list="yes";
 283             ;;
 284         -M|--show-modules)
 285                        show_modules_l="yes"
 286                        ;;
 287         --keep)        keep="yes";;
 288         --printsize)   printsize="yes";;
 289         -*) printf "\nUnknown option: %s\n\n" "$1" >&2; usage; exit 1;;
 290         *)
 291             if ! [[ ${outfile+x} ]]; then
 292                 outfile=$1
 293             elif ! [[ ${kernel+x} ]]; then
 294                 kernel=$1
 295             else
 296                 echo "Unknown argument: $1"
 297                 usage; exit 1;
 298             fi
 299             ;;
 300     esac
 301     shift
 302 done
 303 if ! [[ $kernel ]]; then
 304     kernel=$(uname -r)
 305 fi
 306 [[ $outfile ]] || outfile="/boot/initramfs-$kernel.img"
 307
 308 for i in /usr/sbin /sbin /usr/bin /bin; do
 309     rl=$i
 310     if [ -L "$i" ]; then
 311         rl=$(readlink -f $i)
 312     fi
 313     NPATH+=":$rl"
 314 done
 315 export PATH="${NPATH#:}"
 316 unset NPATH
 317 unset LD_LIBRARY_PATH
 318 unset GREP_OPTIONS
 319
 320 [[ $debug ]] && {
 321     export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
 322     set -x
 323 }
 324
 325 [[ $profile ]] && {
 326     export PS4='+ $(date "+%s.%N") ${BASH_SOURCE}@${LINENO}: ';
 327     set -x
 328     debug=yes
 329 }
 330
 331 [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
 332
 333 # if we were not passed a config file, try the default one
 334 if [[ ! -f $conffile ]]; then
 335     [[ $allowlocal ]] && conffile="$dracutbasedir/dracut.conf" || \
 336         conffile="/etc/dracut.conf"
 337 fi
 338
 339 if [[ ! -d $confdir ]]; then
 340     [[ $allowlocal ]] && confdir="$dracutbasedir/dracut.conf.d" || \
 341         confdir="/etc/dracut.conf.d"
 342 fi
 343
 344 # source our config file
 345 [[ -f $conffile ]] && . "$conffile"
 346
 347 # source our config dir
 348 if [[ $confdir && -d $confdir ]]; then
 349     for f in "$confdir"/*.conf; do
 350         [[ -e $f ]] && . "$f"
 351     done
 352 fi
 353
 354 # these optins add to the stuff in the config file
 355 if (( ${#add_dracutmodules_l[@]} )); then
 356     while pop add_dracutmodules_l val; do
 357         add_dracutmodules+=" $val "
 358     done
 359 fi
 360
 361 if (( ${#force_add_dracutmodules_l[@]} )); then
 362     while pop force_add_dracutmodules_l val; do
 363         force_add_dracutmodules+=" $val "
 364     done
 365 fi
 366
 367 if (( ${#fscks_l[@]} )); then
 368     while pop fscks_l val; do
 369         fscks+=" $val "
 370     done
 371 fi
 372
 373 if (( ${#add_fstab_l[@]} )); then
 374     while pop add_fstab_l val; do
 375         add_fstab+=" $val "
 376     done
 377 fi
 378
 379 if (( ${#fstab_lines_l[@]} )); then
 380     while pop fstab_lines_l val; do
 381         push fstab_lines $val
 382     done
 383 fi
 384
 385 if (( ${#install_items_l[@]} )); then
 386     while pop install_items_l val; do
 387         install_items+=" $val "
 388     done
 389 fi
 390
 391 # these options override the stuff in the config file
 392 if (( ${#dracutmodules_l[@]} )); then
 393     dracutmodules=''
 394     while pop dracutmodules_l val; do
 395         dracutmodules+="$val "
 396     done
 397 fi
 398
 399 if (( ${#omit_dracutmodules_l[@]} )); then
 400     omit_dracutmodules=''
 401     while pop omit_dracutmodules_l val; do
 402         omit_dracutmodules+="$val "
 403     done
 404 fi
 405
 406 if (( ${#filesystems_l[@]} )); then
 407     filesystems=''
 408     while pop filesystems_l val; do
 409         filesystems+="$val "
 410     done
 411 fi
 412
 413 if (( ${#fw_dir_l[@]} )); then
 414     fw_dir=''
 415     while pop fw_dir_l val; do
 416         fw_dir+="$val "
 417     done
 418 fi
 419
 420 if (( ${#libdirs_l[@]} )); then
 421     libdirs=''
 422     while pop libdirs_l val; do
 423         libdirs+="$val "
 424     done
 425 fi
 426
 427 [[ $stdloglvl_l ]] && stdloglvl=$stdloglvl_l
 428 [[ ! $stdloglvl ]] && stdloglvl=4
 429 stdloglvl=$((stdloglvl + verbosity_mod_l))
 430 ((stdloglvl > 6)) && stdloglvl=6
 431 ((stdloglvl < 0)) && stdloglvl=0
 432
 433 [[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l
 434 [[ $do_strip_l ]] && do_strip=$do_strip_l
 435 [[ $prefix_l ]] && prefix=$prefix_l
 436 [[ $prefix = "/" ]] && unset prefix
 437 [[ $hostonly_l ]] && hostonly=$hostonly_l
 438 [[ $use_fstab_l ]] && use_fstab=$use_fstab_l
 439 [[ $mdadmconf_l ]] && mdadmconf=$mdadmconf_l
 440 [[ $lvmconf_l ]] && lvmconf=$lvmconf_l
 441 [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
 442 [[ $fw_dir ]] || fw_dir="/lib/firmware/updates /lib/firmware"
 443 [[ $tmpdir_l ]] && tmpdir="$tmpdir_l"
 444 [[ $tmpdir ]] || tmpdir=/var/tmp
 445 [[ $do_strip ]] || do_strip=no
 446 [[ $compress_l ]] && compress=$compress_l
 447 [[ $show_modules_l ]] && show_modules=$show_modules_l
 448 [[ $nofscks_l ]] && nofscks="yes"
 449 # eliminate IFS hackery when messing with fw_dir
 450 fw_dir=${fw_dir//:/ }
 451
 452 # handle compression options.
 453 [[ $compress ]] || compress="gzip"
 454 case $compress in
 455     bzip2) compress="bzip2 -9";;
 456     lzma)  compress="lzma -9";;
 457     xz)    compress="xz --check=crc32 --lzma2=dict=1MiB";;
 458     gzip)  command -v pigz > /dev/null 2>&1 && compress="pigz -9" || \
 459                                          compress="gzip -9";;
 460 esac
 461 if [[ $_no_compress_l = "cat" ]]; then
 462     compress="cat"
 463 fi
 464
 465 [[ $hostonly = yes ]] && hostonly="-h"
 466 [[ $hostonly != "-h" ]] && unset hostonly
 467
 468 if [[ -f $dracutbasedir/dracut-functions.sh ]]; then
 469     . $dracutbasedir/dracut-functions.sh
 470 else
 471     echo "Cannot find $dracutbasedir/dracut-functions.sh." >&2
 472     echo "Are you running from a git checkout?" >&2
 473     echo "Try passing -l as an argument to $0" >&2
 474     exit 1
 475 fi
 476
 477 if [[ -f $dracutbasedir/dracut-version.sh ]]; then
 478     . $dracutbasedir/dracut-version.sh
 479 fi
 480
 481 # Verify bash version, curret minimum is 3.1
 482 if (( ${BASH_VERSINFO[0]} < 3 ||
 483     ( ${BASH_VERSINFO[0]} == 3 && ${BASH_VERSINFO[1]} < 1 ) )); then
 484     dfatal 'You need at least Bash 3.1 to use dracut, sorry.'
 485     exit 1
 486 fi
 487
 488 dracutfunctions=$dracutbasedir/dracut-functions.sh
 489 export dracutfunctions
 490
 491 if (( ${#drivers_l[@]} )); then
 492     drivers=''
 493     while pop drivers_l val; do
 494         drivers+="$val "
 495     done
 496 fi
 497 drivers=${drivers/-/_}
 498
 499 if (( ${#add_drivers_l[@]} )); then
 500     while pop add_drivers_l val; do
 501         add_drivers+=" $val "
 502     done
 503 fi
 504 add_drivers=${add_drivers/-/_}
 505
 506 if (( ${#omit_drivers_l[@]} )); then
 507     while pop omit_drivers_l val; do
 508         omit_drivers+=" $val "
 509     done
 510 fi
 511 omit_drivers=${omit_drivers/-/_}
 512
 513 omit_drivers_corrected=""
 514 for d in $omit_drivers; do
 515     strstr " $drivers $add_drivers " " $d " && continue
 516     omit_drivers_corrected+="$d|"
 517 done
 518 omit_drivers="${omit_drivers_corrected%|}"
 519 unset omit_drivers_corrected
 520
 521
 522 ddebug "Executing $0 $dracut_args"
 523
 524 [[ $do_list = yes ]] && {
 525     for mod in $dracutbasedir/modules.d/*; do
 526         [[ -d $mod ]] || continue;
 527         [[ -e $mod/install || -e $mod/installkernel || \
 528             -e $mod/module-setup.sh ]] || continue
 529         echo ${mod##*/??}
 530     done
 531     exit 0
 532 }
 533
 534 # This is kinda legacy -- eventually it should go away.
 535 case $dracutmodules in
 536     ""|auto) dracutmodules="all" ;;
 537 esac
 538
 539 abs_outfile=$(readlink -f "$outfile") && outfile="$abs_outfile"
 540
 541 [[ -f $srcmods/modules.dep ]] || {
 542     dfatal "$srcmods/modules.dep is missing. Did you run depmod?"
 543     exit 1
 544 }
 545
 546 if [[ -f $outfile && ! $force ]]; then
 547     dfatal "Will not override existing initramfs ($outfile) without --force"
 548     exit 1
 549 fi
 550
 551 outdir=${outfile%/*}
 552 [[ $outdir ]] || outdir="/"
 553
 554 if [[ ! -d "$outdir" ]]; then
 555     dfatal "Can't write $outfile: Directory $outdir does not exist."
 556     exit 1
 557 elif [[ ! -w "$outdir" ]]; then
 558     dfatal "No permission to write $outdir."
 559     exit 1
 560 elif [[ -f "$outfile" && ! -w "$outfile" ]]; then
 561     dfatal "No permission to write $outfile."
 562     exit 1
 563 fi
 564
 565 readonly TMPDIR="$tmpdir"
 566 readonly initdir=$(mktemp --tmpdir="$TMPDIR/" -d -t initramfs.XXXXXX)
 567 [ -d "$initdir" ] || {
 568     dfatal "mktemp failed."
 569     exit 1
 570 }
 571
 572 # clean up after ourselves no matter how we die.
 573 trap 'ret=$?;[[ $keep ]] && echo "Not removing $initdir." >&2 || rm -rf "$initdir";exit $ret;' EXIT
 574 # clean up after ourselves no matter how we die.
 575 trap 'exit 1;' SIGINT
 576
 577 # Need to be able to have non-root users read stuff (rpcbind etc)
 578 chmod 755 "$initdir"
 579
 580 for line in "${fstab_lines[@]}"; do
 581     set -- $line
 582     #dev mp fs fsopts
 583     push host_devs "$1"
 584     push host_fs_types "$1|$3"
 585 done
 586
 587 for f in $add_fstab; do
 588     [ -e $f ] || continue
 589     while read dev rest; do
 590         push host_devs $dev
 591     done < $f
 592 done
 593
 594 if [[ $hostonly ]]; then
 595     # in hostonly mode, determine all devices, which have to be accessed
 596     # and examine them for filesystem types
 597
 598     push host_mp \
 599         "/" \
 600         "/etc" \
 601         "/usr" \
 602         "/usr/bin" \
 603         "/usr/sbin" \
 604         "/usr/lib" \
 605         "/usr/lib64" \
 606         "/boot"
 607
 608     for mp in "${host_mp[@]}"; do
 609         mountpoint "$mp" >/dev/null 2>&1 || continue
 610         push host_devs $(readlink -f "/dev/block/$(find_block_device "$mp")")
 611     done
 612 fi
 613
 614 _get_fs_type() (
 615     [[ $1 ]] || return
 616     if [[ -b $1 ]] && get_fs_env $1; then
 617         echo "$(readlink -f $1)|$ID_FS_TYPE"
 618         return 1
 619     fi
 620     if [[ -b /dev/block/$1 ]] && get_fs_env /dev/block/$1; then
 621         echo "$(readlink -f /dev/block/$1)|$ID_FS_TYPE"
 622         return 1
 623     fi
 624     if fstype=$(find_dev_fstype $1); then
 625         echo "$1|$fstype"
 626         return 1
 627     fi
 628     return 1
 629 )
 630
 631 for dev in "${host_devs[@]}"; do
 632     unset fs_type
 633     for fstype in $(_get_fs_type $dev) \
 634         $(check_block_and_slaves _get_fs_type $(get_maj_min $dev)); do
 635         if ! strstr " ${host_fs_types[*]} " " $fstype ";then
 636             push host_fs_types "$fstype"
 637         fi
 638     done
 639 done
 640
 641 [[ -d $udevdir ]] \
 642     || udevdir=$(pkg-config udev --variable=udevdir 2>/dev/null)
 643 if ! [[ -d "$udevdir" ]]; then
 644     [[ -d /lib/udev ]] && udevdir=/lib/udev
 645     [[ -d /usr/lib/udev ]] && udevdir=/usr/lib/udev
 646 fi
 647
 648 [[ -d $systemdutildir ]] \
 649     || systemdutildir=$(pkg-config systemd --variable=systemdutildir 2>/dev/null)
 650 [[ -d $systemdsystemunitdir ]] \
 651     || systemdsystemunitdir=$(pkg-config systemd --variable=systemdsystemunitdir 2>/dev/null)
 652
 653 if ! [[ -d "$systemdutildir" ]]; then
 654     [[ -d /lib/systemd ]] && systemdutildir=/lib/systemd
 655     [[ -d /usr/lib/systemd ]] && systemdutildir=/usr/lib/systemd
 656 fi
 657 [[ -d "$systemdsystemunitdir" ]] || systemdsystemunitdir=${systemdutildir}/system
 658
 659 export initdir dracutbasedir dracutmodules drivers \
 660     fw_dir drivers_dir debug no_kernel kernel_only \
 661     add_drivers omit_drivers mdadmconf lvmconf filesystems \
 662     use_fstab fstab_lines libdirs fscks nofscks \
 663     stdloglvl sysloglvl fileloglvl kmsgloglvl logfile \
 664     debug host_fs_types host_devs sshkey add_fstab \
 665     DRACUT_VERSION udevdir systemdutildir systemdsystemunitdir
 666
 667 # Create some directory structure first
 668 [[ $prefix ]] && mkdir -m 0755 -p "${initdir}${prefix}"
 669
 670 [[ -h /lib ]] || mkdir -m 0755 -p "${initdir}${prefix}/lib"
 671 [[ $prefix ]] && ln -sfn "${prefix#/}/lib" "$initdir/lib"
 672
 673 if [[ $prefix ]]; then
 674     for d in bin etc lib sbin tmp usr var $libdirs; do
 675         strstr "$d" "/" && continue
 676         ln -sfn "${prefix#/}/${d#/}" "$initdir/$d"
 677     done
 678 fi
 679
 680 if [[ $kernel_only != yes ]]; then
 681     for d in usr/bin usr/sbin bin etc lib sbin tmp usr var var/log var/run var/lock $libdirs; do
 682         [[ -e "${initdir}${prefix}/$d" ]] && continue
 683         if [ -L "/$d" ]; then
 684             inst_symlink "/$d" "${prefix}/$d"
 685         else
 686             mkdir -m 0755 -p "${initdir}${prefix}/$d"
 687         fi
 688     done
 689
 690     for d in dev proc sys sysroot root run run/lock run/initramfs; do
 691         if [ -L "/$d" ]; then
 692             inst_symlink "/$d"
 693         else
 694             mkdir -m 0755 -p "$initdir/$d"
 695         fi
 696     done
 697
 698     ln -sfn /run "$initdir/var/run"
 699     ln -sfn /run/lock "$initdir/var/lock"
 700 else
 701     for d in lib "$libdir"; do
 702         [[ -e "${initdir}${prefix}/$d" ]] && continue
 703         if [ -h "/$d" ]; then
 704             inst "/$d" "${prefix}/$d"
 705         else
 706             mkdir -m 0755 -p "${initdir}${prefix}/$d"
 707         fi
 708     done
 709 fi
 710
 711 if [[ $kernel_only != yes ]]; then
 712     mkdir -p "${initdir}/etc/cmdline.d"
 713     for _d in $hookdirs; do
 714         mkdir -m 0755 -p ${initdir}/lib/dracut/hooks/$_d
 715     done
 716     if [[ "$UID" = "0" ]]; then
 717         [ -c ${initdir}/dev/null ] || mknod ${initdir}/dev/null c 1 3
 718         [ -c ${initdir}/dev/kmsg ] || mknod ${initdir}/dev/kmsg c 1 11
 719         [ -c ${initdir}/dev/console ] || mknod ${initdir}/dev/console c 5 1
 720     fi
 721 fi
 722
 723 mkdir -p "$initdir/.kernelmodseen"
 724
 725 mods_to_load=""
 726 # check all our modules to see if they should be sourced.
 727 # This builds a list of modules that we will install next.
 728 for_each_module_dir check_module
 729 for_each_module_dir check_mount
 730
 731 _isize=0 #initramfs size
 732 modules_loaded=" "
 733 # source our modules.
 734 for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
 735     _d_mod=${moddir##*/}; _d_mod=${_d_mod#[0-9][0-9]}
 736     if strstr "$mods_to_load" " $_d_mod "; then
 737         [[ $show_modules = yes ]] && echo "$_d_mod" || \
 738             dinfo "*** Including module: $_d_mod ***"
 739         if [[ $kernel_only = yes ]]; then
 740             module_installkernel $_d_mod || {
 741                 dfatal "installkernel failed in module $_d_mod"
 742                 exit 1
 743             }
 744         else
 745             module_install $_d_mod
 746             if [[ $no_kernel != yes ]]; then
 747                 module_installkernel $_d_mod || {
 748                     dfatal "installkernel failed in module $_d_mod"
 749                     exit 1
 750                 }
 751             fi
 752         fi
 753         mods_to_load=${mods_to_load// $_d_mod /}
 754         modules_loaded+="$_d_mod "
 755
 756         #print the module install size
 757         if [ -n "$printsize" ]; then
 758             _isize_new=$(du -sk ${initdir}|cut -f1)
 759             _isize_delta=$(($_isize_new - $_isize))
 760             echo "$_d_mod install size: ${_isize_delta}k"
 761             _isize=$_isize_new
 762         fi
 763     fi
 764 done
 765 unset moddir
 766
 767 for i in $modules_loaded; do
 768     mkdir -p $initdir/lib/dracut
 769     echo "$i" >> $initdir/lib/dracut/modules.txt
 770 done
 771
 772 dinfo "*** Including modules done ***"
 773
 774 ## final stuff that has to happen
 775
 776 # generate module dependencies for the initrd
 777 if [[ -d $initdir/lib/modules/$kernel ]] && \
 778     ! depmod -a -b "$initdir" $kernel; then
 779     dfatal "\"depmod -a $kernel\" failed."
 780     exit 1
 781 fi
 782
 783 while pop include_src src && pop include_target tgt; do
 784     if [[ $src && $tgt ]]; then
 785         if [[ -f $src ]]; then
 786             inst $src $tgt
 787         else
 788             ddebug "Including directory: $src"
 789             mkdir -p "${initdir}/${tgt}"
 790             # check for preexisting symlinks, so we can cope with the
 791             # symlinks to $prefix
 792             for i in "$src"/*; do
 793                 [[ -e "$i" || -h "$i" ]] || continue
 794                 s=${initdir}/${tgt}/${i#$src/}
 795                 if [[ -d "$i" ]]; then
 796                     if ! [[ -e "$s" ]]; then
 797                         mkdir -m 0755 -p "$s"
 798                         chmod --reference="$i" "$s"
 799                     fi
 800                     cp -a -t "$s" "$i"/*
 801                 else
 802                     cp -a -t "$s" "$i"
 803                 fi
 804             done
 805         fi
 806     fi
 807 done
 808
 809 if [[ $kernel_only != yes ]]; then
 810     for item in $install_items; do
 811         dracut_install "$item"
 812     done
 813     unset item
 814
 815     while pop fstab_lines line; do
 816         echo "$line 0 0" >> "${initdir}/etc/fstab"
 817     done
 818
 819     for f in $add_fstab; do
 820         cat $f >> "${initdir}/etc/fstab"
 821     done
 822
 823     # make sure that library links are correct and up to date
 824     for f in /etc/ld.so.conf /etc/ld.so.conf.d/*; do
 825         [[ -f $f ]] && inst_simple "$f"
 826     done
 827     if ! ldconfig -r "$initdir"; then
 828         if [[ $UID = 0 ]]; then
 829             derror "ldconfig exited ungracefully"
 830         else
 831             derror "ldconfig might need uid=0 (root) for chroot()"
 832         fi
 833     fi
 834 fi
 835
 836 rm -fr "$initdir/.kernelmodseen"
 837
 838
 839 if (($maxloglvl >= 5)); then
 840     ddebug "Listing sizes of included files:"
 841     du -c "$initdir" | sort -n | ddebug
 842 fi
 843
 844 # strip binaries
 845 if [[ $do_strip = yes ]] ; then
 846     for p in strip xargs find; do
 847         if ! type -P $p >/dev/null; then
 848             derror "Could not find '$p'. You should run $0 with '--nostrip'."
 849             do_strip=no
 850         fi
 851     done
 852 fi
 853
 854 if [[ $do_strip = yes ]] ; then
 855     find "$initdir" -type f \
 856          \( -perm -0100 -or -perm -0010 -or -perm -0001 \
 857         -or -path '*/lib/modules/*.ko' \) -print0 \
 858         | xargs -0 strip -g 2>/dev/null
 859 fi
 860
 861 type hardlink &>/dev/null && {
 862     hardlink "$initdir" 2>&1
 863 }
 864
 865 if strstr "$modules_loaded" " fips " && command -v prelink >/dev/null; then
 866     for dir in "$initdir/bin" \
 867        "$initdir/sbin" \
 868        "$initdir/usr/bin" \
 869        "$initdir/usr/sbin"; do
 870         [[ -L "$dir" ]] && continue
 871         for i in "$dir"/*; do
 872             [[ -x $i ]] && prelink -u $i &>/dev/null
 873         done
 874     done
 875 fi
 876
 877 if ! ( cd "$initdir"; find . |cpio -R 0:0 -H newc -o --quiet| \
 878     $compress > "$outfile"; ); then
 879     dfatal "dracut: creation of $outfile failed"
 880     exit 1
 881 fi
 882
 883 dinfo "Wrote $outfile:"
 884 dinfo "$(ls -l "$outfile")"
 885
 886 exit 0