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   -h, --help  Display all options
  46
  47 If a [LIST] has multiple arguments, then you have to put these in quotes.
  48
  49 For example:
  50
  51     # dracut --add-drivers "module1 module2"  ...
  52
  53 EOF
  54 }
  55
  56 long_usage() {
  57     [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
  58     if [[ -f $dracutbasedir/dracut-version.sh ]]; then
  59         . $dracutbasedir/dracut-version.sh
  60     fi
  61
  62 #                                                       80x25 linebreak here ^
  63     cat << EOF
  64 Usage: $0 [OPTION]... [<initramfs> [<kernel-version>]]
  65
  66 Version: $DRACUT_VERSION
  67
  68 Creates initial ramdisk images for preloading modules
  69
  70   --kver [VERSION]      Set kernel version to [VERSION].
  71   -f, --force           Overwrite existing initramfs file.
  72   -a, --add [LIST]      Add a space-separated list of dracut modules.
  73   -m, --modules [LIST]  Specify a space-separated list of dracut modules to
  74                          call when building the initramfs. Modules are located
  75                          in /usr/lib/dracut/modules.d.
  76   -o, --omit [LIST]     Omit a space-separated list of dracut modules.
  77   -d, --drivers [LIST]  Specify a space-separated list of kernel modules to
  78                         exclusively include in the initramfs.
  79   --add-drivers [LIST] Specify a space-separated list of kernel
  80                         modules to add to the initramfs.
  81   --omit-drivers [LIST] Specify a space-separated list of kernel
  82                         modules not to add to the initramfs.
  83   --filesystems [LIST]  Specify a space-separated list of kernel filesystem
  84                         modules to exclusively include in the generic
  85                         initramfs.
  86   -k, --kmoddir [DIR]   Specify the directory, where to look for kernel
  87                         modules
  88   --fwdir [DIR]         Specify additional directories, where to look for
  89                         firmwares, separated by :
  90   --kernel-only         Only install kernel drivers and firmware files
  91   --no-kernel           Do not install kernel drivers and firmware files
  92   --kernel-cmdline [PARAMETERS] Specify default kernel command line parameters
  93   --strip               Strip binaries in the initramfs
  94   --nostrip             Do not strip binaries in the initramfs
  95   --hardlink            Hardlink files in the initramfs
  96   --nohardlink          Do not hardlink files in the initramfs
  97   --prefix [DIR]        Prefix initramfs files with [DIR]
  98   --noprefix            Do not prefix initramfs files
  99   --mdadmconf           Include local /etc/mdadm.conf
 100   --nomdadmconf         Do not include local /etc/mdadm.conf
 101   --lvmconf             Include local /etc/lvm/lvm.conf
 102   --nolvmconf           Do not include local /etc/lvm/lvm.conf
 103   --fscks [LIST]        Add a space-separated list of fsck helpers.
 104   --nofscks             Inhibit installation of any fsck helpers.
 105   --ro-mnt              Mount / and /usr read-only by default.
 106   -h, --help            This message
 107   --debug               Output debug information of the build process
 108   --profile             Output profile information of the build process
 109   -L, --stdlog [0-6]    Specify logging level (to standard error)
 110                          0 - suppress any messages
 111                          1 - only fatal errors
 112                          2 - all errors
 113                          3 - warnings
 114                          4 - info
 115                          5 - debug info (here starts lots of output)
 116                          6 - trace info (and even more)
 117   -v, --verbose         Increase verbosity level
 118   -q, --quiet           Decrease verbosity level
 119   -c, --conf [FILE]     Specify configuration file to use.
 120                          Default: /etc/dracut.conf
 121   --confdir [DIR]       Specify configuration directory to use *.conf files
 122                          from. Default: /etc/dracut.conf.d
 123   --tmpdir [DIR]        Temporary directory to be used instead of default
 124                          /var/tmp.
 125   -l, --local           Local mode. Use modules from the current working
 126                          directory instead of the system-wide installed in
 127                          /usr/lib/dracut/modules.d.
 128                          Useful when running dracut from a git checkout.
 129   -H, --hostonly        Host-Only mode: Install only what is needed for
 130                          booting the local host instead of a generic host.
 131   -N, --no-hostonly     Disables Host-Only mode
 132   --fstab               Use /etc/fstab to determine the root device.
 133   --add-fstab [FILE]    Add file to the initramfs fstab
 134   --mount "[DEV] [MP] [FSTYPE] [FSOPTS]"
 135                         Mount device [DEV] on mountpoint [MP] with filesystem
 136                         [FSTYPE] and options [FSOPTS] in the initramfs
 137   --add-device "[DEV]"  Bring up [DEV] in initramfs
 138   -i, --include [SOURCE] [TARGET]
 139                         Include the files in the SOURCE directory into the
 140                          Target directory in the final initramfs.
 141                         If SOURCE is a file, it will be installed to TARGET
 142                          in the final initramfs.
 143   -I, --install [LIST]  Install the space separated list of files into the
 144                          initramfs.
 145   --gzip                Compress the generated initramfs using gzip.
 146                          This will be done by default, unless another
 147                          compression option or --no-compress is passed.
 148   --bzip2               Compress the generated initramfs using bzip2.
 149                          Make sure your kernel has bzip2 decompression support
 150                          compiled in, otherwise you will not be able to boot.
 151   --lzma                Compress the generated initramfs using lzma.
 152                          Make sure your kernel has lzma support compiled in,
 153                          otherwise you will not be able to boot.
 154   --xz                  Compress the generated initramfs using xz.
 155                          Make sure that your kernel has xz support compiled
 156                          in, otherwise you will not be able to boot.
 157   --compress [COMPRESSION] Compress the generated initramfs with the
 158                          passed compression program.  Make sure your kernel
 159                          knows how to decompress the generated initramfs,
 160                          otherwise you will not be able to boot.
 161   --no-compress         Do not compress the generated initramfs.  This will
 162                          override any other compression options.
 163   --list-modules        List all available dracut modules.
 164   -M, --show-modules    Print included module's name to standard output during
 165                          build.
 166   --keep                Keep the temporary initramfs for debugging purposes
 167   --printsize           Print out the module install size
 168   --sshkey [SSHKEY]     Add ssh key to initramfs (use with ssh-client module)
 169
 170 If [LIST] has multiple arguments, then you have to put these in quotes.
 171
 172 For example:
 173
 174     # dracut --add-drivers "module1 module2"  ...
 175
 176 EOF
 177 }
 178
 179 # function push()
 180 # push values to a stack
 181 # $1 = stack variable
 182 # $2.. values
 183 # example:
 184 # push stack 1 2 "3 4"
 185 push() {
 186     local _i
 187     local __stack=$1; shift
 188     for _i in "$@"; do
 189         eval ${__stack}'[${#'${__stack}'[@]}]="$_i"'
 190     done
 191 }
 192
 193 # function pop()
 194 # pops the last value from a stack
 195 # assigns value to second argument variable
 196 # or echo to stdout, if no second argument
 197 # $1 = stack variable
 198 # $2 = optional variable to store the value
 199 # example:
 200 # pop stack val
 201 # val=$(pop stack)
 202 pop() {
 203     local __stack=$1; shift
 204     local __resultvar=$1
 205     local _value;
 206     # check for empty stack
 207     eval '[[ ${#'${__stack}'[@]} -eq 0 ]] && return 1'
 208
 209     eval _value='${'${__stack}'[${#'${__stack}'[@]}-1]}'
 210
 211     if [[ "$__resultvar" ]]; then
 212         eval $__resultvar="'$_value'"
 213     else
 214         echo "$_value"
 215     fi
 216     eval unset ${__stack}'[${#'${__stack}'[@]}-1]'
 217     return 0
 218 }
 219
 220 # Little helper function for reading args from the commandline.
 221 # it automatically handles -a b and -a=b variants, and returns 1 if
 222 # we need to shift $3.
 223 read_arg() {
 224     # $1 = arg name
 225     # $2 = arg value
 226     # $3 = arg parameter
 227     local rematch='^[^=]*=(.*)$'
 228     if [[ $2 =~ $rematch ]]; then
 229         read "$1" <<< "${BASH_REMATCH[1]}"
 230     else
 231         read "$1" <<< "$3"
 232         # There is no way to shift our callers args, so
 233         # return 1 to indicate they should do it instead.
 234         return 1
 235     fi
 236 }
 237
 238
 239 dropindirs_sort()
 240 {
 241     suffix=$1; shift
 242     args=("$@")
 243     files=$(
 244         while (( $# > 0 )); do
 245             for i in ${1}/*${suffix}; do
 246                 [[ -f $i ]] && echo ${i##*/}
 247             done
 248             shift
 249         done | sort -Vu
 250     )
 251
 252     for f in $files; do
 253         for d in "${args[@]}"; do
 254             if [[ -f "$d/$f" ]]; then
 255                 echo "$d/$f"
 256                 continue 2
 257             fi
 258         done
 259     done
 260 }
 261
 262 verbosity_mod_l=0
 263 unset kernel
 264 unset outfile
 265
 266 # Workaround -i, --include taking 2 arguments
 267 set -- "${@/--include/++include}"
 268
 269 # This prevents any long argument ending with "-i"
 270 # -i, like --opt-i but I think we can just prevent that
 271 set -- "${@/%-i/++include}"
 272
 273 TEMP=$(unset POSIXLY_CORRECT; getopt \
 274     -o "a:m:o:d:I:k:c:L:fvqlHhMN" \
 275     --long kver: \
 276     --long add: \
 277     --long force-add: \
 278     --long add-drivers: \
 279     --long omit-drivers: \
 280     --long modules: \
 281     --long omit: \
 282     --long drivers: \
 283     --long filesystems: \
 284     --long install: \
 285     --long fwdir: \
 286     --long libdirs: \
 287     --long fscks: \
 288     --long add-fstab: \
 289     --long mount: \
 290     --long device: \
 291     --long nofscks: \
 292     --long ro-mnt \
 293     --long kmoddir: \
 294     --long conf: \
 295     --long confdir: \
 296     --long tmpdir: \
 297     --long stdlog: \
 298     --long compress: \
 299     --long prefix: \
 300     --long force \
 301     --long kernel-only \
 302     --long no-kernel \
 303     --long kernel-cmdline: \
 304     --long strip \
 305     --long nostrip \
 306     --long hardlink \
 307     --long nohardlink \
 308     --long noprefix \
 309     --long mdadmconf \
 310     --long nomdadmconf \
 311     --long lvmconf \
 312     --long nolvmconf \
 313     --long debug \
 314     --long profile \
 315     --long sshkey: \
 316     --long verbose \
 317     --long quiet \
 318     --long local \
 319     --long hostonly \
 320     --long no-hostonly \
 321     --long fstab \
 322     --long help \
 323     --long bzip2 \
 324     --long lzma \
 325     --long xz \
 326     --long no-compress \
 327     --long gzip \
 328     --long list-modules \
 329     --long show-modules \
 330     --long keep \
 331     --long printsize \
 332     -- "$@")
 333
 334 if (( $? != 0 )); then
 335     usage
 336     exit 1
 337 fi
 338
 339 eval set -- "$TEMP"
 340
 341 while :; do
 342     case $1 in
 343         --kver)        kernel="$2"; shift;;
 344         -a|--add)      push add_dracutmodules_l  "$2"; shift;;
 345         --force-add)   push force_add_dracutmodules_l  "$2"; shift;;
 346         --add-drivers) push add_drivers_l        "$2"; shift;;
 347         --omit-drivers) push omit_drivers_l      "$2"; shift;;
 348         -m|--modules)  push dracutmodules_l      "$2"; shift;;
 349         -o|--omit)     push omit_dracutmodules_l "$2"; shift;;
 350         -d|--drivers)  push drivers_l            "$2"; shift;;
 351         --filesystems) push filesystems_l        "$2"; shift;;
 352         -I|--install)  push install_items_l      "$2"; shift;;
 353         --fwdir)       push fw_dir_l             "$2"; shift;;
 354         --libdirs)     push libdirs_l            "$2"; shift;;
 355         --fscks)       push fscks_l              "$2"; shift;;
 356         --add-fstab)   push add_fstab_l          "$2"; shift;;
 357         --mount)       push fstab_lines          "$2"; shift;;
 358         --add-device|--device)
 359                        push add_device_l         "$2"; shift;;
 360         --kernel-cmdline) push kernel_cmdline_l  "$2"; shift;;
 361         --nofscks)     nofscks_l="yes";;
 362         --ro-mnt)      ro_mnt_l="yes";;
 363         -k|--kmoddir)  drivers_dir_l="$2"; shift;;
 364         -c|--conf)     conffile="$2"; shift;;
 365         --confdir)     confdir="$2"; shift;;
 366         --tmpdir)      tmpdir_l="$2"; shift;;
 367         -L|--stdlog)   stdloglvl_l="$2"; shift;;
 368         --compress)    compress_l="$2"; shift;;
 369         --prefix)      prefix_l="$2"; shift;;
 370         -f|--force)    force=yes;;
 371         --kernel-only) kernel_only="yes"; no_kernel="no";;
 372         --no-kernel)   kernel_only="no"; no_kernel="yes";;
 373         --strip)       do_strip_l="yes";;
 374         --nostrip)     do_strip_l="no";;
 375         --hardlink)    do_hardlink_l="yes";;
 376         --nohardlink)  do_hardlink_l="no";;
 377         --noprefix)    prefix_l="/";;
 378         --mdadmconf)   mdadmconf_l="yes";;
 379         --nomdadmconf) mdadmconf_l="no";;
 380         --lvmconf)     lvmconf_l="yes";;
 381         --nolvmconf)   lvmconf_l="no";;
 382         --debug)       debug="yes";;
 383         --profile)     profile="yes";;
 384         --sshkey)      sshkey="$2"; shift;;
 385         -v|--verbose)  ((verbosity_mod_l++));;
 386         -q|--quiet)    ((verbosity_mod_l--));;
 387         -l|--local)
 388                        allowlocal="yes"
 389                        [[ -f "$(readlink -f ${0%/*})/dracut-functions.sh" ]] \
 390                            && dracutbasedir="$(readlink -f ${0%/*})"
 391                        ;;
 392         -H|--hostonly) hostonly_l="yes" ;;
 393         -N|--no-hostonly) hostonly_l="no" ;;
 394         --fstab)       use_fstab_l="yes" ;;
 395         -h|--help)     long_usage; exit 1 ;;
 396         -i|--include)  push include_src "$2"
 397                        shift;;
 398         --bzip2)       compress_l="bzip2";;
 399         --lzma)        compress_l="lzma";;
 400         --xz)          compress_l="xz";;
 401         --no-compress) _no_compress_l="cat";;
 402         --gzip)        compress_l="gzip";;
 403         --list-modules) do_list="yes";;
 404         -M|--show-modules)
 405                        show_modules_l="yes"
 406                        ;;
 407         --keep)        keep="yes";;
 408         --printsize)   printsize="yes";;
 409
 410         --) shift; break;;
 411
 412         *)  # should not even reach this point
 413             printf "\n!Unknown option: '%s'\n\n" "$1" >&2; usage; exit 1;;
 414     esac
 415     shift
 416 done
 417
 418 # getopt cannot handle multiple arguments, so just handle "-I,--include"
 419 # the old fashioned way
 420
 421 while (($# > 0)); do
 422     case ${1%%=*} in
 423         ++include) push include_src "$2"
 424                        push include_target "$3"
 425                        shift 2;;
 426         *)
 427             if ! [[ ${outfile+x} ]]; then
 428                 outfile=$1
 429             elif ! [[ ${kernel+x} ]]; then
 430                 kernel=$1
 431             else
 432                 printf "\nUnknown arguments: %s\n\n" "$*" >&2
 433                 usage; exit 1;
 434             fi
 435             ;;
 436     esac
 437     shift
 438 done
 439
 440 if ! [[ $kernel ]]; then
 441     kernel=$(uname -r)
 442 fi
 443
 444 if ! [[ $outfile ]]; then
 445     [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
 446
 447     if [[ $MACHINE_ID ]] && ( [[ -d /boot/${MACHINE_ID} ]] || [[ -L /boot/${MACHINE_ID} ]] ); then
 448         outfile="/boot/${MACHINE_ID}/$kernel/initrd"
 449     else
 450         outfile="/boot/initramfs-$kernel.img"
 451     fi
 452 fi
 453
 454 for i in /usr/sbin /sbin /usr/bin /bin; do
 455     rl=$i
 456     if [ -L "$i" ]; then
 457         rl=$(readlink -f $i)
 458     fi
 459     if [[ "$NPATH" != "*:$rl*" ]] ; then
 460         NPATH+=":$rl"
 461     fi
 462 done
 463 export PATH="${NPATH#:}"
 464 unset NPATH
 465 unset LD_LIBRARY_PATH
 466 unset GREP_OPTIONS
 467
 468 export DRACUT_LOG_LEVEL=warning
 469 [[ $debug ]] && {
 470     export DRACUT_LOG_LEVEL=debug
 471     export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
 472     set -x
 473 }
 474
 475 [[ $profile ]] && {
 476     export PS4='+ $(date "+%s.%N") ${BASH_SOURCE}@${LINENO}: ';
 477     set -x
 478     debug=yes
 479 }
 480
 481 [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
 482
 483 # if we were not passed a config file, try the default one
 484 if [[ ! -f $conffile ]]; then
 485     [[ $allowlocal ]] && conffile="$dracutbasedir/dracut.conf" || \
 486         conffile="/etc/dracut.conf"
 487 fi
 488
 489 if [[ ! -d $confdir ]]; then
 490     [[ $allowlocal ]] && confdir="$dracutbasedir/dracut.conf.d" || \
 491         confdir="/etc/dracut.conf.d"
 492 fi
 493
 494 # source our config file
 495 [[ -f $conffile ]] && . "$conffile"
 496
 497 # source our config dir
 498 for f in $(dropindirs_sort ".conf" "$confdir" "$dracutbasedir/dracut.conf.d"); do
 499     [[ -e $f ]] && . "$f"
 500 done
 501
 502 # these optins add to the stuff in the config file
 503 if (( ${#add_dracutmodules_l[@]} )); then
 504     while pop add_dracutmodules_l val; do
 505         add_dracutmodules+=" $val "
 506     done
 507 fi
 508
 509 if (( ${#force_add_dracutmodules_l[@]} )); then
 510     while pop force_add_dracutmodules_l val; do
 511         force_add_dracutmodules+=" $val "
 512     done
 513 fi
 514
 515 if (( ${#fscks_l[@]} )); then
 516     while pop fscks_l val; do
 517         fscks+=" $val "
 518     done
 519 fi
 520
 521 if (( ${#add_fstab_l[@]} )); then
 522     while pop add_fstab_l val; do
 523         add_fstab+=" $val "
 524     done
 525 fi
 526
 527 if (( ${#fstab_lines_l[@]} )); then
 528     while pop fstab_lines_l val; do
 529         push fstab_lines $val
 530     done
 531 fi
 532
 533 if (( ${#install_items_l[@]} )); then
 534     while pop install_items_l val; do
 535         install_items+=" $val "
 536     done
 537 fi
 538
 539 # these options override the stuff in the config file
 540 if (( ${#dracutmodules_l[@]} )); then
 541     dracutmodules=''
 542     while pop dracutmodules_l val; do
 543         dracutmodules+="$val "
 544     done
 545 fi
 546
 547 if (( ${#omit_dracutmodules_l[@]} )); then
 548     omit_dracutmodules=''
 549     while pop omit_dracutmodules_l val; do
 550         omit_dracutmodules+="$val "
 551     done
 552 fi
 553
 554 if (( ${#filesystems_l[@]} )); then
 555     filesystems=''
 556     while pop filesystems_l val; do
 557         filesystems+="$val "
 558     done
 559 fi
 560
 561 if (( ${#fw_dir_l[@]} )); then
 562     fw_dir=''
 563     while pop fw_dir_l val; do
 564         fw_dir+="$val "
 565     done
 566 fi
 567
 568 if (( ${#libdirs_l[@]} )); then
 569     libdirs=''
 570     while pop libdirs_l val; do
 571         libdirs+="$val "
 572     done
 573 fi
 574
 575 [[ $stdloglvl_l ]] && stdloglvl=$stdloglvl_l
 576 [[ ! $stdloglvl ]] && stdloglvl=4
 577 stdloglvl=$((stdloglvl + verbosity_mod_l))
 578 ((stdloglvl > 6)) && stdloglvl=6
 579 ((stdloglvl < 0)) && stdloglvl=0
 580
 581 [[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l
 582 [[ $do_strip_l ]] && do_strip=$do_strip_l
 583 [[ $do_strip ]] || do_strip=yes
 584 [[ $do_hardlink_l ]] && do_hardlink=$do_hardlink_l
 585 [[ $do_hardlink ]] || do_hardlink=yes
 586 [[ $prefix_l ]] && prefix=$prefix_l
 587 [[ $prefix = "/" ]] && unset prefix
 588 [[ $hostonly_l ]] && hostonly=$hostonly_l
 589 [[ $use_fstab_l ]] && use_fstab=$use_fstab_l
 590 [[ $mdadmconf_l ]] && mdadmconf=$mdadmconf_l
 591 [[ $lvmconf_l ]] && lvmconf=$lvmconf_l
 592 [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
 593 [[ $fw_dir ]] || fw_dir="/lib/firmware/updates /lib/firmware"
 594 [[ $tmpdir_l ]] && tmpdir="$tmpdir_l"
 595 [[ $tmpdir ]] || tmpdir=/var/tmp
 596 [[ $compress_l ]] && compress=$compress_l
 597 [[ $show_modules_l ]] && show_modules=$show_modules_l
 598 [[ $nofscks_l ]] && nofscks="yes"
 599 [[ $ro_mnt_l ]] && ro_mnt="yes"
 600 # eliminate IFS hackery when messing with fw_dir
 601 fw_dir=${fw_dir//:/ }
 602
 603 # handle compression options.
 604 [[ $compress ]] || compress="gzip"
 605 case $compress in
 606     bzip2) compress="bzip2 -9";;
 607     lzma)  compress="lzma -9";;
 608     xz)    compress="xz --check=crc32 --lzma2=dict=1MiB";;
 609     gzip)  command -v pigz > /dev/null 2>&1 && compress="pigz -9" || \
 610                                          compress="gzip -9";;
 611 esac
 612 if [[ $_no_compress_l = "cat" ]]; then
 613     compress="cat"
 614 fi
 615
 616 [[ $hostonly = yes ]] && hostonly="-h"
 617 [[ $hostonly != "-h" ]] && unset hostonly
 618
 619 readonly TMPDIR="$tmpdir"
 620 readonly initdir=$(mktemp --tmpdir="$TMPDIR/" -d -t initramfs.XXXXXX)
 621 [ -d "$initdir" ] || {
 622     echo "dracut: mktemp --tmpdir=\"$TMPDIR/\" -d -t initramfs.XXXXXX failed." >&2
 623     exit 1
 624 }
 625
 626 # clean up after ourselves no matter how we die.
 627 trap 'ret=$?;[[ $keep ]] && echo "Not removing $initdir." >&2 || { [[ $initdir ]] && rm -rf "$initdir";exit $ret; };' EXIT
 628 # clean up after ourselves no matter how we die.
 629 trap 'exit 1;' SIGINT
 630
 631 export DRACUT_KERNEL_LAZY="1"
 632 export DRACUT_RESOLVE_LAZY="1"
 633
 634 if [[ -f $dracutbasedir/dracut-functions.sh ]]; then
 635     . $dracutbasedir/dracut-functions.sh
 636 else
 637     echo "dracut: Cannot find $dracutbasedir/dracut-functions.sh." >&2
 638     echo "dracut: Are you running from a git checkout?" >&2
 639     echo "dracut: Try passing -l as an argument to $0" >&2
 640     exit 1
 641 fi
 642
 643 inst /bin/sh
 644 if ! $DRACUT_INSTALL ${initdir+-D "$initdir"} -R "$initdir/bin/sh" &>/dev/null; then
 645     unset DRACUT_RESOLVE_LAZY
 646     export DRACUT_RESOLVE_DEPS=1
 647 fi
 648 rm -fr ${initdir}/*
 649
 650 if [[ -f $dracutbasedir/dracut-version.sh ]]; then
 651     . $dracutbasedir/dracut-version.sh
 652 fi
 653
 654 # Verify bash version, current minimum is 3.1
 655 if (( ${BASH_VERSINFO[0]} < 3 ||
 656     ( ${BASH_VERSINFO[0]} == 3 && ${BASH_VERSINFO[1]} < 1 ) )); then
 657     dfatal 'You need at least Bash 3.1 to use dracut, sorry.'
 658     exit 1
 659 fi
 660
 661 dracutfunctions=$dracutbasedir/dracut-functions.sh
 662 export dracutfunctions
 663
 664 if (( ${#drivers_l[@]} )); then
 665     drivers=''
 666     while pop drivers_l val; do
 667         drivers+="$val "
 668     done
 669 fi
 670 drivers=${drivers/-/_}
 671
 672 if (( ${#add_drivers_l[@]} )); then
 673     while pop add_drivers_l val; do
 674         add_drivers+=" $val "
 675     done
 676 fi
 677 add_drivers=${add_drivers/-/_}
 678
 679 if (( ${#omit_drivers_l[@]} )); then
 680     while pop omit_drivers_l val; do
 681         omit_drivers+=" $val "
 682     done
 683 fi
 684 omit_drivers=${omit_drivers/-/_}
 685
 686 if (( ${#kernel_cmdline_l[@]} )); then
 687     while pop kernel_cmdline_l val; do
 688         kernel_cmdline+=" $val "
 689     done
 690 fi
 691
 692 omit_drivers_corrected=""
 693 for d in $omit_drivers; do
 694     strstr " $drivers $add_drivers " " $d " && continue
 695     omit_drivers_corrected+="$d|"
 696 done
 697 omit_drivers="${omit_drivers_corrected%|}"
 698 unset omit_drivers_corrected
 699
 700 # prepare args for logging
 701 for ((i=0; i < ${#dracut_args[@]}; i++)); do
 702     strstr "${dracut_args[$i]}" " " && \
 703         dracut_args[$i]="\"${dracut_args[$i]}\""
 704         #" keep vim happy
 705 done
 706 ddebug "Executing: $0 ${dracut_args[@]}"
 707
 708 [[ $do_list = yes ]] && {
 709     for mod in $dracutbasedir/modules.d/*; do
 710         [[ -d $mod ]] || continue;
 711         [[ -e $mod/install || -e $mod/installkernel || \
 712             -e $mod/module-setup.sh ]] || continue
 713         echo ${mod##*/??}
 714     done
 715     exit 0
 716 }
 717
 718 # This is kinda legacy -- eventually it should go away.
 719 case $dracutmodules in
 720     ""|auto) dracutmodules="all" ;;
 721 esac
 722
 723 abs_outfile=$(readlink -f "$outfile") && outfile="$abs_outfile"
 724
 725 if [[ -d $srcmods ]]; then
 726     [[ -f $srcmods/modules.dep ]] || {
 727       dwarn "$srcmods/modules.dep is missing. Did you run depmod?"
 728     }
 729 fi
 730
 731 if [[ -f $outfile && ! $force ]]; then
 732     dfatal "Will not override existing initramfs ($outfile) without --force"
 733     exit 1
 734 fi
 735
 736 outdir=${outfile%/*}
 737 [[ $outdir ]] || outdir="/"
 738
 739 if [[ ! -d "$outdir" ]]; then
 740     dfatal "Can't write to $outdir: Directory $outdir does not exist or is not accessible."
 741     exit 1
 742 elif [[ ! -w "$outdir" ]]; then
 743     dfatal "No permission to write to $outdir."
 744     exit 1
 745 elif [[ -f "$outfile" && ! -w "$outfile" ]]; then
 746     dfatal "No permission to write $outfile."
 747     exit 1
 748 fi
 749
 750 # Need to be able to have non-root users read stuff (rpcbind etc)
 751 chmod 755 "$initdir"
 752
 753 declare -A host_fs_types
 754
 755 for line in "${fstab_lines[@]}"; do
 756     set -- $line
 757     #dev mp fs fsopts
 758     push host_devs "$1"
 759     host_fs_types["$1"]="$3"
 760 done
 761
 762 for f in $add_fstab; do
 763     [ -e $f ] || continue
 764     while read dev rest; do
 765         push host_devs $dev
 766     done < $f
 767 done
 768
 769 if (( ${#add_device_l[@]} )); then
 770     while pop add_device_l val; do
 771         add_device+=" $val "
 772     done
 773 fi
 774
 775 for dev in $add_device; do
 776     push host_devs $dev
 777 done
 778
 779 if [[ $hostonly ]]; then
 780     # in hostonly mode, determine all devices, which have to be accessed
 781     # and examine them for filesystem types
 782
 783     push host_mp \
 784         "/" \
 785         "/etc" \
 786         "/usr" \
 787         "/usr/bin" \
 788         "/usr/sbin" \
 789         "/usr/lib" \
 790         "/usr/lib64" \
 791         "/boot"
 792
 793     for mp in "${host_mp[@]}"; do
 794         mountpoint "$mp" >/dev/null 2>&1 || continue
 795         push host_devs $(readlink -f "/dev/block/$(find_block_device "$mp")")
 796     done
 797 fi
 798
 799 _get_fs_type() (
 800     [[ $1 ]] || return
 801     if [[ -b $1 ]] && get_fs_env $1; then
 802         echo "$(readlink -f $1) $ID_FS_TYPE"
 803         return 1
 804     fi
 805     if [[ -b /dev/block/$1 ]] && get_fs_env /dev/block/$1; then
 806         echo "$(readlink -f /dev/block/$1) $ID_FS_TYPE"
 807         return 1
 808     fi
 809     if fstype=$(find_dev_fstype $1); then
 810         echo "$1 $fstype"
 811         return 1
 812     fi
 813     return 1
 814 )
 815
 816 for dev in "${host_devs[@]}"; do
 817     while read key val; do
 818         host_fs_types["$key"]="$val"
 819     done < <(
 820         _get_fs_type $dev
 821         check_block_and_slaves_all _get_fs_type $(get_maj_min $dev)
 822     )
 823 done
 824
 825 [[ -d $udevdir ]] \
 826     || udevdir=$(pkg-config udev --variable=udevdir 2>/dev/null)
 827 if ! [[ -d "$udevdir" ]]; then
 828     [[ -d /lib/udev ]] && udevdir=/lib/udev
 829     [[ -d /usr/lib/udev ]] && udevdir=/usr/lib/udev
 830 fi
 831
 832 [[ -d $systemdutildir ]] \
 833     || systemdutildir=$(pkg-config systemd --variable=systemdutildir 2>/dev/null)
 834 [[ -d $systemdsystemunitdir ]] \
 835     || systemdsystemunitdir=$(pkg-config systemd --variable=systemdsystemunitdir 2>/dev/null)
 836
 837 if ! [[ -d "$systemdutildir" ]]; then
 838     [[ -d /lib/systemd ]] && systemdutildir=/lib/systemd
 839     [[ -d /usr/lib/systemd ]] && systemdutildir=/usr/lib/systemd
 840 fi
 841 [[ -d "$systemdsystemunitdir" ]] || systemdsystemunitdir=${systemdutildir}/system
 842
 843 export initdir dracutbasedir dracutmodules \
 844     fw_dir drivers_dir debug no_kernel kernel_only \
 845     omit_drivers mdadmconf lvmconf \
 846     use_fstab fstab_lines libdirs fscks nofscks ro_mnt \
 847     stdloglvl sysloglvl fileloglvl kmsgloglvl logfile \
 848     debug host_fs_types host_devs sshkey add_fstab \
 849     DRACUT_VERSION udevdir systemdutildir systemdsystemunitdir \
 850     prefix filesystems drivers
 851
 852 # Create some directory structure first
 853 [[ $prefix ]] && mkdir -m 0755 -p "${initdir}${prefix}"
 854
 855 [[ -h /lib ]] || mkdir -m 0755 -p "${initdir}${prefix}/lib"
 856 [[ $prefix ]] && ln -sfn "${prefix#/}/lib" "$initdir/lib"
 857
 858 if [[ $prefix ]]; then
 859     for d in bin etc lib sbin tmp usr var $libdirs; do
 860         strstr "$d" "/" && continue
 861         ln -sfn "${prefix#/}/${d#/}" "$initdir/$d"
 862     done
 863 fi
 864
 865 if [[ $kernel_only != yes ]]; then
 866     for d in usr/bin usr/sbin bin etc lib sbin tmp usr var $libdirs; do
 867         [[ -e "${initdir}${prefix}/$d" ]] && continue
 868         if [ -L "/$d" ]; then
 869             inst_symlink "/$d" "${prefix}/$d"
 870         else
 871             mkdir -m 0755 -p "${initdir}${prefix}/$d"
 872         fi
 873     done
 874
 875     for d in dev proc sys sysroot root run run/lock run/initramfs; do
 876         if [ -L "/$d" ]; then
 877             inst_symlink "/$d"
 878         else
 879             mkdir -m 0755 -p "$initdir/$d"
 880         fi
 881     done
 882
 883     ln -sfn ../run "$initdir/var/run"
 884     ln -sfn ../run/lock "$initdir/var/lock"
 885     ln -sfn ../run/log "$initdir/var/log"
 886 else
 887     for d in lib "$libdir"; do
 888         [[ -e "${initdir}${prefix}/$d" ]] && continue
 889         if [ -h "/$d" ]; then
 890             inst "/$d" "${prefix}/$d"
 891         else
 892             mkdir -m 0755 -p "${initdir}${prefix}/$d"
 893         fi
 894     done
 895 fi
 896
 897 if [[ $kernel_only != yes ]]; then
 898     mkdir -p "${initdir}/etc/cmdline.d"
 899     for _d in $hookdirs; do
 900         mkdir -m 0755 -p ${initdir}/lib/dracut/hooks/$_d
 901     done
 902     if [[ "$UID" = "0" ]]; then
 903         [ -c ${initdir}/dev/null ] || mknod ${initdir}/dev/null c 1 3
 904         [ -c ${initdir}/dev/kmsg ] || mknod ${initdir}/dev/kmsg c 1 11
 905         [ -c ${initdir}/dev/console ] || mknod ${initdir}/dev/console c 5 1
 906     fi
 907 fi
 908
 909 mods_to_load=""
 910 # check all our modules to see if they should be sourced.
 911 # This builds a list of modules that we will install next.
 912 for_each_module_dir check_module
 913 for_each_module_dir check_mount
 914
 915 strstr "$mods_to_load" "fips" && export DRACUT_FIPS_MODE=1
 916
 917 _isize=0 #initramfs size
 918 modules_loaded=" "
 919 # source our modules.
 920 for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
 921     _d_mod=${moddir##*/}; _d_mod=${_d_mod#[0-9][0-9]}
 922     if strstr "$mods_to_load" " $_d_mod "; then
 923         [[ $show_modules = yes ]] && echo "$_d_mod" || \
 924             dinfo "*** Including module: $_d_mod ***"
 925         if [[ $kernel_only = yes ]]; then
 926             module_installkernel $_d_mod || {
 927                 dfatal "installkernel failed in module $_d_mod"
 928                 exit 1
 929             }
 930         else
 931             module_install $_d_mod
 932             if [[ $no_kernel != yes ]]; then
 933                 module_installkernel $_d_mod || {
 934                     dfatal "installkernel failed in module $_d_mod"
 935                     exit 1
 936                 }
 937             fi
 938         fi
 939         mods_to_load=${mods_to_load// $_d_mod /}
 940         modules_loaded+="$_d_mod "
 941
 942         #print the module install size
 943         if [ -n "$printsize" ]; then
 944             _isize_new=$(du -sk ${initdir}|cut -f1)
 945             _isize_delta=$(($_isize_new - $_isize))
 946             echo "$_d_mod install size: ${_isize_delta}k"
 947             _isize=$_isize_new
 948         fi
 949     fi
 950 done
 951 unset moddir
 952
 953 for i in $modules_loaded; do
 954     mkdir -p $initdir/lib/dracut
 955     echo "$i" >> $initdir/lib/dracut/modules.txt
 956 done
 957
 958 dinfo "*** Including modules done ***"
 959
 960 ## final stuff that has to happen
 961 if [[ $no_kernel != yes ]]; then
 962
 963     if [[ $drivers ]]; then
 964         hostonly='' instmods $drivers
 965     fi
 966
 967     if [[ $add_drivers ]]; then
 968         hostonly='' instmods -c $add_drivers
 969     fi
 970     if [[ $filesystems ]]; then
 971         hostonly='' instmods -c $filesystems
 972     fi
 973
 974     dinfo "*** Installing kernel module dependencies and firmware ***"
 975     dracut_kernel_post
 976     dinfo "*** Installing kernel module dependencies and firmware done ***"
 977 fi
 978
 979 if [[ $kernel_only != yes ]]; then
 980     (( ${#install_items[@]} > 0 )) && dracut_install  ${install_items[@]}
 981
 982     [[ $kernel_cmdline ]] && echo "$kernel_cmdline" >> "${initdir}/etc/cmdline.d/01-default.conf"
 983
 984     while pop fstab_lines line; do
 985         echo "$line 0 0" >> "${initdir}/etc/fstab"
 986     done
 987
 988     for f in $add_fstab; do
 989         cat $f >> "${initdir}/etc/fstab"
 990     done
 991
 992     if [[ $DRACUT_RESOLVE_LAZY ]] && [[ $DRACUT_INSTALL ]]; then
 993         dinfo "*** Resolving executable dependencies ***"
 994         find "$initdir" -type f \
 995             '(' -perm -0100 -or -perm -0010 -or -perm -0001 ')' \
 996             -not -path '*.ko' -print0 \
 997         | xargs -r -0 $DRACUT_INSTALL ${initdir+-D "$initdir"} -R ${DRACUT_FIPS_MODE+-H}
 998         dinfo "*** Resolving executable dependencies done***"
 999     fi
1000 fi
1001
1002 while pop include_src src && pop include_target tgt; do
1003     if [[ $src && $tgt ]]; then
1004         if [[ -f $src ]]; then
1005             inst $src $tgt
1006         else
1007             ddebug "Including directory: $src"
1008             mkdir -p "${initdir}/${tgt}"
1009             # check for preexisting symlinks, so we can cope with the
1010             # symlinks to $prefix
1011             for i in "$src"/*; do
1012                 [[ -e "$i" || -h "$i" ]] || continue
1013                 s=${initdir}/${tgt}/${i#$src/}
1014                 if [[ -d "$i" ]]; then
1015                     if ! [[ -e "$s" ]]; then
1016                         mkdir -m 0755 -p "$s"
1017                         chmod --reference="$i" "$s"
1018                     fi
1019                     cp --reflink=auto --sparse=auto -fa -t "$s" "$i"/*
1020                 else
1021                     cp --reflink=auto --sparse=auto -fa -t "$s" "$i"
1022                 fi
1023             done
1024         fi
1025     fi
1026 done
1027
1028 if [[ $kernel_only != yes ]]; then
1029     # make sure that library links are correct and up to date
1030     for f in /etc/ld.so.conf /etc/ld.so.conf.d/*; do
1031         [[ -f $f ]] && inst_simple "$f"
1032     done
1033     if ! ldconfig -r "$initdir"; then
1034         if [[ $UID = 0 ]]; then
1035             derror "ldconfig exited ungracefully"
1036         else
1037             derror "ldconfig might need uid=0 (root) for chroot()"
1038         fi
1039     fi
1040 fi
1041
1042 if (($maxloglvl >= 5)); then
1043     ddebug "Listing sizes of included files:"
1044     du -c "$initdir" | sort -n | ddebug
1045 fi
1046
1047 PRELINK_BIN=$(command -v prelink)
1048 if [[ $UID = 0 ]] && [[ $PRELINK_BIN ]]; then
1049     if [[ $DRACUT_FIPS_MODE ]]; then
1050         dinfo "*** Pre-unlinking files ***"
1051         dracut_install -o prelink /etc/prelink.conf /etc/prelink.conf.d/*.conf /etc/prelink.cache
1052         chroot "$initdir" $PRELINK_BIN -u -a
1053         rm -f "$initdir"/$PRELINK_BIN
1054         rm -fr "$initdir"/etc/prelink.*
1055         dinfo "*** Pre-unlinking files done ***"
1056     else
1057         dinfo "*** Pre-linking files ***"
1058         dracut_install -o prelink /etc/prelink.conf /etc/prelink.conf.d/*.conf
1059         chroot "$initdir" $PRELINK_BIN -a
1060         rm -f "$initdir"/$PRELINK_BIN
1061         rm -fr "$initdir"/etc/prelink.*
1062         dinfo "*** Pre-linking files done ***"
1063     fi
1064 fi
1065
1066 if [[ $do_hardlink = yes ]] && command -v hardlink >/dev/null; then
1067     dinfo "*** Hardlinking files ***"
1068     hardlink "$initdir" 2>&1
1069     dinfo "*** Hardlinking files done ***"
1070 fi
1071
1072 # strip binaries
1073 if [[ $do_strip = yes ]] ; then
1074     for p in strip xargs find; do
1075         if ! type -P $p >/dev/null; then
1076             dwarn "Could not find '$p'. Not stripping the initramfs."
1077             do_strip=no
1078         fi
1079     done
1080 fi
1081
1082 if [[ $do_strip = yes ]] ; then
1083     dinfo "*** Stripping files ***"
1084     if [[ $DRACUT_FIPS_MODE ]]; then
1085         find "$initdir" -type f \
1086             -executable -not -path '*/lib/modules/*.ko' -print0 \
1087             | while read -r -d $'\0' f; do
1088             if ! [[ -e "${f%/*}/.${f##*/}.hmac" ]] \
1089                 && ! [[ -e "/lib/fipscheck/${f##*/}.hmac" ]] \
1090                 && ! [[ -e "/lib64/fipscheck/${f##*/}.hmac" ]]; then
1091                 echo -n "$f"; echo -n -e "\000"
1092             fi
1093         done | xargs -r -0 strip -g 2>/dev/null
1094     else
1095         find "$initdir" -type f \
1096             -executable -not -path '*/lib/modules/*.ko' -print0 \
1097             | xargs -r -0 strip -g 2>/dev/null
1098     fi
1099
1100     # strip kernel modules, but do not touch signed modules
1101     find "$initdir" -type f -path '*/lib/modules/*.ko' -print0 \
1102         | while read -r -d $'\0' f; do
1103         SIG=$(tail -c 28 "$f")
1104         [[ $SIG == '~Module signature appended~' ]] || { echo -n "$f"; echo -n -e "\000"; }
1105     done | xargs -r -0 strip -g
1106
1107     dinfo "*** Stripping files done ***"
1108 fi
1109
1110 rm -f "$outfile"
1111 dinfo "*** Creating image file ***"
1112 if ! ( umask 077; cd "$initdir"; find . |cpio -R 0:0 -H newc -o --quiet| \
1113     $compress > "$outfile.$$"; ); then
1114     dfatal "dracut: creation of $outfile.$$ failed"
1115     exit 1
1116 fi
1117 mv $outfile.$$ $outfile
1118 dinfo "*** Creating image file done ***"
1119
1120 dinfo "Wrote $outfile:"
1121 dinfo "$(ls -l "$outfile")"
1122
1123 exit 0