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 2005-2013 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   --force-add [LIST]    Force to add a space-separated list of dracut modules
  78                          to the default set of modules, when -H is specified.
  79   -d, --drivers [LIST]  Specify a space-separated list of kernel modules to
  80                          exclusively include in the initramfs.
  81   --add-drivers [LIST]  Specify a space-separated list of kernel
  82                          modules to add to the initramfs.
  83   --omit-drivers [LIST] Specify a space-separated list of kernel
  84                          modules not to add to the initramfs.
  85   --filesystems [LIST]  Specify a space-separated list of kernel filesystem
  86                          modules to exclusively include in the generic
  87                          initramfs.
  88   -k, --kmoddir [DIR]   Specify the directory, where to look for kernel
  89                          modules
  90   --fwdir [DIR]         Specify additional directories, where to look for
  91                          firmwares, separated by :
  92   --kernel-only         Only install kernel drivers and firmware files
  93   --no-kernel           Do not install kernel drivers and firmware files
  94   --kernel-cmdline [PARAMETERS] Specify default kernel command line parameters
  95   --strip               Strip binaries in the initramfs
  96   --nostrip             Do not strip binaries in the initramfs
  97   --hardlink            Hardlink files in the initramfs
  98   --nohardlink          Do not hardlink files in the initramfs
  99   --prefix [DIR]        Prefix initramfs files with [DIR]
 100   --noprefix            Do not prefix initramfs files
 101   --mdadmconf           Include local /etc/mdadm.conf
 102   --nomdadmconf         Do not include local /etc/mdadm.conf
 103   --lvmconf             Include local /etc/lvm/lvm.conf
 104   --nolvmconf           Do not include local /etc/lvm/lvm.conf
 105   --fscks [LIST]        Add a space-separated list of fsck helpers.
 106   --nofscks             Inhibit installation of any fsck helpers.
 107   --ro-mnt              Mount / and /usr read-only by default.
 108   -h, --help            This message
 109   --debug               Output debug information of the build process
 110   --profile             Output profile information of the build process
 111   -L, --stdlog [0-6]    Specify logging level (to standard error)
 112                          0 - suppress any messages
 113                          1 - only fatal errors
 114                          2 - all errors
 115                          3 - warnings
 116                          4 - info
 117                          5 - debug info (here starts lots of output)
 118                          6 - trace info (and even more)
 119   -v, --verbose         Increase verbosity level
 120   -q, --quiet           Decrease verbosity level
 121   -c, --conf [FILE]     Specify configuration file to use.
 122                          Default: /etc/dracut.conf
 123   --confdir [DIR]       Specify configuration directory to use *.conf files
 124                          from. Default: /etc/dracut.conf.d
 125   --tmpdir [DIR]        Temporary directory to be used instead of default
 126                          /var/tmp.
 127   -l, --local           Local mode. Use modules from the current working
 128                          directory instead of the system-wide installed in
 129                          /usr/lib/dracut/modules.d.
 130                          Useful when running dracut from a git checkout.
 131   -H, --hostonly        Host-Only mode: Install only what is needed for
 132                          booting the local host instead of a generic host.
 133   -N, --no-hostonly     Disables Host-Only mode
 134   --fstab               Use /etc/fstab to determine the root device.
 135   --add-fstab [FILE]    Add file to the initramfs fstab
 136   --mount "[DEV] [MP] [FSTYPE] [FSOPTS]"
 137                         Mount device [DEV] on mountpoint [MP] with filesystem
 138                         [FSTYPE] and options [FSOPTS] in the initramfs
 139   --add-device "[DEV]"  Bring up [DEV] in initramfs
 140   -i, --include [SOURCE] [TARGET]
 141                         Include the files in the SOURCE directory into the
 142                          Target directory in the final initramfs.
 143                         If SOURCE is a file, it will be installed to TARGET
 144                          in the final initramfs.
 145   -I, --install [LIST]  Install the space separated list of files into the
 146                          initramfs.
 147   --gzip                Compress the generated initramfs using gzip.
 148                          This will be done by default, unless another
 149                          compression option or --no-compress is passed.
 150   --bzip2               Compress the generated initramfs using bzip2.
 151                          Make sure your kernel has bzip2 decompression support
 152                          compiled in, otherwise you will not be able to boot.
 153   --lzma                Compress the generated initramfs using lzma.
 154                          Make sure your kernel has lzma support compiled in,
 155                          otherwise you will not be able to boot.
 156   --xz                  Compress the generated initramfs using xz.
 157                          Make sure that your kernel has xz support compiled
 158                          in, otherwise you will not be able to boot.
 159   --compress [COMPRESSION] Compress the generated initramfs with the
 160                          passed compression program.  Make sure your kernel
 161                          knows how to decompress the generated initramfs,
 162                          otherwise you will not be able to boot.
 163   --no-compress         Do not compress the generated initramfs.  This will
 164                          override any other compression options.
 165   --list-modules        List all available dracut modules.
 166   -M, --show-modules    Print included module's name to standard output during
 167                          build.
 168   --keep                Keep the temporary initramfs for debugging purposes
 169   --printsize           Print out the module install size
 170   --sshkey [SSHKEY]     Add ssh key to initramfs (use with ssh-client module)
 171
 172 If [LIST] has multiple arguments, then you have to put these in quotes.
 173
 174 For example:
 175
 176     # dracut --add-drivers "module1 module2"  ...
 177
 178 EOF
 179 }
 180
 181 # function push()
 182 # push values to a stack
 183 # $1 = stack variable
 184 # $2.. values
 185 # example:
 186 # push stack 1 2 "3 4"
 187 push() {
 188     local _i
 189     local __stack=$1; shift
 190     for _i in "$@"; do
 191         eval ${__stack}'[${#'${__stack}'[@]}]="$_i"'
 192     done
 193 }
 194
 195 # function pop()
 196 # pops the last value from a stack
 197 # assigns value to second argument variable
 198 # or echo to stdout, if no second argument
 199 # $1 = stack variable
 200 # $2 = optional variable to store the value
 201 # example:
 202 # pop stack val
 203 # val=$(pop stack)
 204 pop() {
 205     local __stack=$1; shift
 206     local __resultvar=$1
 207     local _value;
 208     # check for empty stack
 209     eval '[[ ${#'${__stack}'[@]} -eq 0 ]] && return 1'
 210
 211     eval _value='${'${__stack}'[${#'${__stack}'[@]}-1]}'
 212
 213     if [[ "$__resultvar" ]]; then
 214         eval $__resultvar="'$_value'"
 215     else
 216         echo "$_value"
 217     fi
 218     eval unset ${__stack}'[${#'${__stack}'[@]}-1]'
 219     return 0
 220 }
 221
 222 # Little helper function for reading args from the commandline.
 223 # it automatically handles -a b and -a=b variants, and returns 1 if
 224 # we need to shift $3.
 225 read_arg() {
 226     # $1 = arg name
 227     # $2 = arg value
 228     # $3 = arg parameter
 229     local rematch='^[^=]*=(.*)$'
 230     if [[ $2 =~ $rematch ]]; then
 231         read "$1" <<< "${BASH_REMATCH[1]}"
 232     else
 233         read "$1" <<< "$3"
 234         # There is no way to shift our callers args, so
 235         # return 1 to indicate they should do it instead.
 236         return 1
 237     fi
 238 }
 239
 240
 241 dropindirs_sort()
 242 {
 243     suffix=$1; shift
 244     args=("$@")
 245     files=$(
 246         while (( $# > 0 )); do
 247             for i in ${1}/*${suffix}; do
 248                 [[ -f $i ]] && echo ${i##*/}
 249             done
 250             shift
 251         done | sort -Vu
 252     )
 253
 254     for f in $files; do
 255         for d in "${args[@]}"; do
 256             if [[ -f "$d/$f" ]]; then
 257                 echo "$d/$f"
 258                 continue 2
 259             fi
 260         done
 261     done
 262 }
 263
 264 verbosity_mod_l=0
 265 unset kernel
 266 unset outfile
 267
 268 # Workaround -i, --include taking 2 arguments
 269 set -- "${@/--include/++include}"
 270
 271 # This prevents any long argument ending with "-i"
 272 # -i, like --opt-i but I think we can just prevent that
 273 set -- "${@/%-i/++include}"
 274
 275 TEMP=$(unset POSIXLY_CORRECT; getopt \
 276     -o "a:m:o:d:I:k:c:L:fvqlHhMN" \
 277     --long kver: \
 278     --long add: \
 279     --long force-add: \
 280     --long add-drivers: \
 281     --long omit-drivers: \
 282     --long modules: \
 283     --long omit: \
 284     --long drivers: \
 285     --long filesystems: \
 286     --long install: \
 287     --long fwdir: \
 288     --long libdirs: \
 289     --long fscks: \
 290     --long add-fstab: \
 291     --long mount: \
 292     --long device: \
 293     --long nofscks: \
 294     --long ro-mnt \
 295     --long kmoddir: \
 296     --long conf: \
 297     --long confdir: \
 298     --long tmpdir: \
 299     --long stdlog: \
 300     --long compress: \
 301     --long prefix: \
 302     --long force \
 303     --long kernel-only \
 304     --long no-kernel \
 305     --long kernel-cmdline: \
 306     --long strip \
 307     --long nostrip \
 308     --long hardlink \
 309     --long nohardlink \
 310     --long noprefix \
 311     --long mdadmconf \
 312     --long nomdadmconf \
 313     --long lvmconf \
 314     --long nolvmconf \
 315     --long debug \
 316     --long profile \
 317     --long sshkey: \
 318     --long verbose \
 319     --long quiet \
 320     --long local \
 321     --long hostonly \
 322     --long host-only \
 323     --long no-hostonly \
 324     --long no-host-only \
 325     --long fstab \
 326     --long help \
 327     --long bzip2 \
 328     --long lzma \
 329     --long xz \
 330     --long no-compress \
 331     --long gzip \
 332     --long list-modules \
 333     --long show-modules \
 334     --long keep \
 335     --long printsize \
 336     --long regenerate-all \
 337     --long noimageifnotneeded \
 338     -- "$@")
 339
 340 if (( $? != 0 )); then
 341     usage
 342     exit 1
 343 fi
 344
 345 eval set -- "$TEMP"
 346
 347 while :; do
 348     case $1 in
 349         --kver)        kernel="$2"; shift;;
 350         -a|--add)      push add_dracutmodules_l  "$2"; shift;;
 351         --force-add)   push force_add_dracutmodules_l  "$2"; shift;;
 352         --add-drivers) push add_drivers_l        "$2"; shift;;
 353         --omit-drivers) push omit_drivers_l      "$2"; shift;;
 354         -m|--modules)  push dracutmodules_l      "$2"; shift;;
 355         -o|--omit)     push omit_dracutmodules_l "$2"; shift;;
 356         -d|--drivers)  push drivers_l            "$2"; shift;;
 357         --filesystems) push filesystems_l        "$2"; shift;;
 358         -I|--install)  push install_items_l      "$2"; shift;;
 359         --fwdir)       push fw_dir_l             "$2"; shift;;
 360         --libdirs)     push libdirs_l            "$2"; shift;;
 361         --fscks)       push fscks_l              "$2"; shift;;
 362         --add-fstab)   push add_fstab_l          "$2"; shift;;
 363         --mount)       push fstab_lines          "$2"; shift;;
 364         --add-device|--device)
 365                        push add_device_l         "$2"; shift;;
 366         --kernel-cmdline) push kernel_cmdline_l  "$2"; shift;;
 367         --nofscks)     nofscks_l="yes";;
 368         --ro-mnt)      ro_mnt_l="yes";;
 369         -k|--kmoddir)  drivers_dir_l="$2"; shift;;
 370         -c|--conf)     conffile="$2"; shift;;
 371         --confdir)     confdir="$2"; shift;;
 372         --tmpdir)      tmpdir_l="$2"; shift;;
 373         -L|--stdlog)   stdloglvl_l="$2"; shift;;
 374         --compress)    compress_l="$2"; shift;;
 375         --prefix)      prefix_l="$2"; shift;;
 376         -f|--force)    force=yes;;
 377         --kernel-only) kernel_only="yes"; no_kernel="no";;
 378         --no-kernel)   kernel_only="no"; no_kernel="yes";;
 379         --strip)       do_strip_l="yes";;
 380         --nostrip)     do_strip_l="no";;
 381         --hardlink)    do_hardlink_l="yes";;
 382         --nohardlink)  do_hardlink_l="no";;
 383         --noprefix)    prefix_l="/";;
 384         --mdadmconf)   mdadmconf_l="yes";;
 385         --nomdadmconf) mdadmconf_l="no";;
 386         --lvmconf)     lvmconf_l="yes";;
 387         --nolvmconf)   lvmconf_l="no";;
 388         --debug)       debug="yes";;
 389         --profile)     profile="yes";;
 390         --sshkey)      sshkey="$2"; shift;;
 391         -v|--verbose)  ((verbosity_mod_l++));;
 392         -q|--quiet)    ((verbosity_mod_l--));;
 393         -l|--local)
 394                        allowlocal="yes"
 395                        [[ -f "$(readlink -f ${0%/*})/dracut-functions.sh" ]] \
 396                            && dracutbasedir="$(readlink -f ${0%/*})"
 397                        ;;
 398         -H|--hostonly|--host-only)
 399                        hostonly_l="yes" ;;
 400         -N|--no-hostonly|--no-host-only)
 401                        hostonly_l="no" ;;
 402         --fstab)       use_fstab_l="yes" ;;
 403         -h|--help)     long_usage; exit 1 ;;
 404         -i|--include)  push include_src "$2"
 405                        shift;;
 406         --bzip2)       compress_l="bzip2";;
 407         --lzma)        compress_l="lzma";;
 408         --xz)          compress_l="xz";;
 409         --no-compress) _no_compress_l="cat";;
 410         --gzip)        compress_l="gzip";;
 411         --list-modules) do_list="yes";;
 412         -M|--show-modules)
 413                        show_modules_l="yes"
 414                        ;;
 415         --keep)        keep="yes";;
 416         --printsize)   printsize="yes";;
 417         --regenerate-all) regenerate_all="yes";;
 418         --noimageifnotneeded) noimageifnotneeded="yes";;
 419
 420         --) shift; break;;
 421
 422         *)  # should not even reach this point
 423             printf "\n!Unknown option: '%s'\n\n" "$1" >&2; usage; exit 1;;
 424     esac
 425     shift
 426 done
 427
 428 # getopt cannot handle multiple arguments, so just handle "-I,--include"
 429 # the old fashioned way
 430
 431 while (($# > 0)); do
 432     case ${1%%=*} in
 433         ++include) push include_src "$2"
 434                        push include_target "$3"
 435                        shift 2;;
 436         *)
 437             if ! [[ ${outfile+x} ]]; then
 438                 outfile=$1
 439             elif ! [[ ${kernel+x} ]]; then
 440                 kernel=$1
 441             else
 442                 printf "\nUnknown arguments: %s\n\n" "$*" >&2
 443                 usage; exit 1;
 444             fi
 445             ;;
 446     esac
 447     shift
 448 done
 449
 450 if [[ $regenerate_all == "yes" ]]; then
 451     ret=0
 452     if [[ $kernel ]]; then
 453         echo "--regenerate-all cannot be called with a kernel version" >&2
 454         exit 1
 455     fi
 456
 457     if [[ $outfile ]]; then
 458         echo "--regenerate-all cannot be called with a image file" >&2
 459         exit 1
 460     fi
 461
 462     ((len=${#dracut_args[@]}))
 463     for ((i=0; i < len; i++)); do
 464         [[ ${dracut_args[$i]} == "--regenerate-all" ]] && \
 465             unset dracut_args[$i]
 466     done
 467
 468     cd /lib/modules
 469     for i in *; do
 470         [[ -f $i/modules.builtin ]] || continue
 471         dracut --kver=$i "${dracut_args[@]}"
 472         ((ret+=$?))
 473     done
 474     exit $ret
 475 fi
 476
 477 if ! [[ $kernel ]]; then
 478     kernel=$(uname -r)
 479 fi
 480
 481 if ! [[ $outfile ]]; then
 482     [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
 483
 484     if [[ $MACHINE_ID ]] && ( [[ -d /boot/${MACHINE_ID} ]] || [[ -L /boot/${MACHINE_ID} ]] ); then
 485         outfile="/boot/${MACHINE_ID}/$kernel/initrd"
 486     else
 487         outfile="/boot/initramfs-$kernel.img"
 488     fi
 489 fi
 490
 491 for i in /usr/sbin /sbin /usr/bin /bin; do
 492     rl=$i
 493     if [ -L "$i" ]; then
 494         rl=$(readlink -f $i)
 495     fi
 496     if [[ "$NPATH" != "*:$rl*" ]] ; then
 497         NPATH+=":$rl"
 498     fi
 499 done
 500 export PATH="${NPATH#:}"
 501 unset NPATH
 502 unset LD_LIBRARY_PATH
 503 unset GREP_OPTIONS
 504
 505 export DRACUT_LOG_LEVEL=warning
 506 [[ $debug ]] && {
 507     export DRACUT_LOG_LEVEL=debug
 508     export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
 509     set -x
 510 }
 511
 512 [[ $profile ]] && {
 513     export PS4='+ $(date "+%s.%N") ${BASH_SOURCE}@${LINENO}: ';
 514     set -x
 515     debug=yes
 516 }
 517
 518 [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
 519
 520 # if we were not passed a config file, try the default one
 521 if [[ ! -f $conffile ]]; then
 522     [[ $allowlocal ]] && conffile="$dracutbasedir/dracut.conf" || \
 523         conffile="/etc/dracut.conf"
 524 fi
 525
 526 if [[ ! -d $confdir ]]; then
 527     [[ $allowlocal ]] && confdir="$dracutbasedir/dracut.conf.d" || \
 528         confdir="/etc/dracut.conf.d"
 529 fi
 530
 531 # source our config file
 532 [[ -f $conffile ]] && . "$conffile"
 533
 534 # source our config dir
 535 for f in $(dropindirs_sort ".conf" "$confdir" "$dracutbasedir/dracut.conf.d"); do
 536     [[ -e $f ]] && . "$f"
 537 done
 538
 539 # these optins add to the stuff in the config file
 540 if (( ${#add_dracutmodules_l[@]} )); then
 541     while pop add_dracutmodules_l val; do
 542         add_dracutmodules+=" $val "
 543     done
 544 fi
 545
 546 if (( ${#force_add_dracutmodules_l[@]} )); then
 547     while pop force_add_dracutmodules_l val; do
 548         force_add_dracutmodules+=" $val "
 549     done
 550 fi
 551
 552 if (( ${#fscks_l[@]} )); then
 553     while pop fscks_l val; do
 554         fscks+=" $val "
 555     done
 556 fi
 557
 558 if (( ${#add_fstab_l[@]} )); then
 559     while pop add_fstab_l val; do
 560         add_fstab+=" $val "
 561     done
 562 fi
 563
 564 if (( ${#fstab_lines_l[@]} )); then
 565     while pop fstab_lines_l val; do
 566         push fstab_lines $val
 567     done
 568 fi
 569
 570 if (( ${#install_items_l[@]} )); then
 571     while pop install_items_l val; do
 572         install_items+=" $val "
 573     done
 574 fi
 575
 576 # these options override the stuff in the config file
 577 if (( ${#dracutmodules_l[@]} )); then
 578     dracutmodules=''
 579     while pop dracutmodules_l val; do
 580         dracutmodules+="$val "
 581     done
 582 fi
 583
 584 if (( ${#omit_dracutmodules_l[@]} )); then
 585     omit_dracutmodules=''
 586     while pop omit_dracutmodules_l val; do
 587         omit_dracutmodules+="$val "
 588     done
 589 fi
 590
 591 if (( ${#filesystems_l[@]} )); then
 592     filesystems=''
 593     while pop filesystems_l val; do
 594         filesystems+="$val "
 595     done
 596 fi
 597
 598 if (( ${#fw_dir_l[@]} )); then
 599     fw_dir=''
 600     while pop fw_dir_l val; do
 601         fw_dir+="$val "
 602     done
 603 fi
 604
 605 if (( ${#libdirs_l[@]} )); then
 606     libdirs=''
 607     while pop libdirs_l val; do
 608         libdirs+="$val "
 609     done
 610 fi
 611
 612 [[ $stdloglvl_l ]] && stdloglvl=$stdloglvl_l
 613 [[ ! $stdloglvl ]] && stdloglvl=4
 614 stdloglvl=$((stdloglvl + verbosity_mod_l))
 615 ((stdloglvl > 6)) && stdloglvl=6
 616 ((stdloglvl < 0)) && stdloglvl=0
 617
 618 [[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l
 619 [[ $do_strip_l ]] && do_strip=$do_strip_l
 620 [[ $do_strip ]] || do_strip=yes
 621 [[ $do_hardlink_l ]] && do_hardlink=$do_hardlink_l
 622 [[ $do_hardlink ]] || do_hardlink=yes
 623 [[ $prefix_l ]] && prefix=$prefix_l
 624 [[ $prefix = "/" ]] && unset prefix
 625 [[ $hostonly_l ]] && hostonly=$hostonly_l
 626 [[ $use_fstab_l ]] && use_fstab=$use_fstab_l
 627 [[ $mdadmconf_l ]] && mdadmconf=$mdadmconf_l
 628 [[ $lvmconf_l ]] && lvmconf=$lvmconf_l
 629 [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
 630 [[ $fw_dir ]] || fw_dir="/lib/firmware/updates /lib/firmware"
 631 [[ $tmpdir_l ]] && tmpdir="$tmpdir_l"
 632 [[ $tmpdir ]] || tmpdir=/var/tmp
 633 [[ $compress_l ]] && compress=$compress_l
 634 [[ $show_modules_l ]] && show_modules=$show_modules_l
 635 [[ $nofscks_l ]] && nofscks="yes"
 636 [[ $ro_mnt_l ]] && ro_mnt="yes"
 637 # eliminate IFS hackery when messing with fw_dir
 638 fw_dir=${fw_dir//:/ }
 639
 640 # handle compression options.
 641 [[ $compress ]] || compress="gzip"
 642 case $compress in
 643     bzip2) compress="bzip2 -9";;
 644     lzma)  compress="lzma -9";;
 645     xz)    compress="xz --check=crc32 --lzma2=dict=1MiB";;
 646     gzip)  command -v pigz > /dev/null 2>&1 && compress="pigz -9" || \
 647                                          compress="gzip -9";;
 648 esac
 649 if [[ $_no_compress_l = "cat" ]]; then
 650     compress="cat"
 651 fi
 652
 653 [[ $hostonly = yes ]] && hostonly="-h"
 654 [[ $hostonly != "-h" ]] && unset hostonly
 655
 656 readonly TMPDIR="$tmpdir"
 657 readonly initdir=$(mktemp --tmpdir="$TMPDIR/" -d -t initramfs.XXXXXX)
 658 [ -d "$initdir" ] || {
 659     echo "dracut: mktemp --tmpdir=\"$TMPDIR/\" -d -t initramfs.XXXXXX failed." >&2
 660     exit 1
 661 }
 662
 663 # clean up after ourselves no matter how we die.
 664 trap 'ret=$?;[[ $outfile ]] && [[ -f $outfile.$$ ]] && rm -f "$outfile.$$";[[ $keep ]] && echo "Not removing $initdir." >&2 || { [[ $initdir ]] && rm -rf "$initdir";exit $ret; };' EXIT
 665 # clean up after ourselves no matter how we die.
 666 trap 'exit 1;' SIGINT
 667
 668 export DRACUT_KERNEL_LAZY="1"
 669 export DRACUT_RESOLVE_LAZY="1"
 670
 671 if [[ -f $dracutbasedir/dracut-functions.sh ]]; then
 672     . $dracutbasedir/dracut-functions.sh
 673 else
 674     echo "dracut: Cannot find $dracutbasedir/dracut-functions.sh." >&2
 675     echo "dracut: Are you running from a git checkout?" >&2
 676     echo "dracut: Try passing -l as an argument to $0" >&2
 677     exit 1
 678 fi
 679
 680 inst /bin/sh
 681 if ! $DRACUT_INSTALL ${initdir+-D "$initdir"} -R "$initdir/bin/sh" &>/dev/null; then
 682     unset DRACUT_RESOLVE_LAZY
 683     export DRACUT_RESOLVE_DEPS=1
 684 fi
 685 rm -fr ${initdir}/*
 686
 687 if [[ -f $dracutbasedir/dracut-version.sh ]]; then
 688     . $dracutbasedir/dracut-version.sh
 689 fi
 690
 691 # Verify bash version, current minimum is 3.1
 692 if (( ${BASH_VERSINFO[0]} < 3 ||
 693     ( ${BASH_VERSINFO[0]} == 3 && ${BASH_VERSINFO[1]} < 1 ) )); then
 694     dfatal 'You need at least Bash 3.1 to use dracut, sorry.'
 695     exit 1
 696 fi
 697
 698 dracutfunctions=$dracutbasedir/dracut-functions.sh
 699 export dracutfunctions
 700
 701 if (( ${#drivers_l[@]} )); then
 702     drivers=''
 703     while pop drivers_l val; do
 704         drivers+="$val "
 705     done
 706 fi
 707 drivers=${drivers/-/_}
 708
 709 if (( ${#add_drivers_l[@]} )); then
 710     while pop add_drivers_l val; do
 711         add_drivers+=" $val "
 712     done
 713 fi
 714 add_drivers=${add_drivers/-/_}
 715
 716 if (( ${#omit_drivers_l[@]} )); then
 717     while pop omit_drivers_l val; do
 718         omit_drivers+=" $val "
 719     done
 720 fi
 721 omit_drivers=${omit_drivers/-/_}
 722
 723 if (( ${#kernel_cmdline_l[@]} )); then
 724     while pop kernel_cmdline_l val; do
 725         kernel_cmdline+=" $val "
 726     done
 727 fi
 728
 729 omit_drivers_corrected=""
 730 for d in $omit_drivers; do
 731     strstr " $drivers $add_drivers " " $d " && continue
 732     omit_drivers_corrected+="$d|"
 733 done
 734 omit_drivers="${omit_drivers_corrected%|}"
 735 unset omit_drivers_corrected
 736
 737 # prepare args for logging
 738 for ((i=0; i < ${#dracut_args[@]}; i++)); do
 739     strstr "${dracut_args[$i]}" " " && \
 740         dracut_args[$i]="\"${dracut_args[$i]}\""
 741         #" keep vim happy
 742 done
 743 ddebug "Executing: $0 ${dracut_args[@]}"
 744
 745 [[ $do_list = yes ]] && {
 746     for mod in $dracutbasedir/modules.d/*; do
 747         [[ -d $mod ]] || continue;
 748         [[ -e $mod/install || -e $mod/installkernel || \
 749             -e $mod/module-setup.sh ]] || continue
 750         echo ${mod##*/??}
 751     done
 752     exit 0
 753 }
 754
 755 # This is kinda legacy -- eventually it should go away.
 756 case $dracutmodules in
 757     ""|auto) dracutmodules="all" ;;
 758 esac
 759
 760 abs_outfile=$(readlink -f "$outfile") && outfile="$abs_outfile"
 761
 762 if [[ -d $srcmods ]]; then
 763     [[ -f $srcmods/modules.dep ]] || {
 764       dwarn "$srcmods/modules.dep is missing. Did you run depmod?"
 765     }
 766 fi
 767
 768 if [[ -f $outfile && ! $force ]]; then
 769     dfatal "Will not override existing initramfs ($outfile) without --force"
 770     exit 1
 771 fi
 772
 773 outdir=${outfile%/*}
 774 [[ $outdir ]] || outdir="/"
 775
 776 if [[ ! -d "$outdir" ]]; then
 777     dfatal "Can't write to $outdir: Directory $outdir does not exist or is not accessible."
 778     exit 1
 779 elif [[ ! -w "$outdir" ]]; then
 780     dfatal "No permission to write to $outdir."
 781     exit 1
 782 elif [[ -f "$outfile" && ! -w "$outfile" ]]; then
 783     dfatal "No permission to write $outfile."
 784     exit 1
 785 fi
 786
 787 # Need to be able to have non-root users read stuff (rpcbind etc)
 788 chmod 755 "$initdir"
 789
 790 if [[ $hostonly ]]; then
 791     for i in /sys /proc /run /dev; do
 792         if ! findmnt "$i" &>/dev/null; then
 793             dwarning "Turning off host-only mode: '$i' is not mounted!"
 794             unset hostonly
 795         fi
 796     done
 797     if ! [[ -d /run/udev/data ]]; then
 798         dwarning "Turning off host-only mode: udev database not found!"
 799         unset hostonly
 800     fi
 801 fi
 802
 803 declare -A host_fs_types
 804
 805 for line in "${fstab_lines[@]}"; do
 806     set -- $line
 807     #dev mp fs fsopts
 808     push host_devs "$1"
 809     host_fs_types["$1"]="$3"
 810 done
 811
 812 for f in $add_fstab; do
 813     [ -e $f ] || continue
 814     while read dev rest; do
 815         push host_devs $dev
 816     done < $f
 817 done
 818
 819 if (( ${#add_device_l[@]} )); then
 820     while pop add_device_l val; do
 821         add_device+=" $val "
 822     done
 823 fi
 824
 825 for dev in $add_device; do
 826     push host_devs $dev
 827 done
 828
 829 if [[ $hostonly ]]; then
 830     # in hostonly mode, determine all devices, which have to be accessed
 831     # and examine them for filesystem types
 832
 833     push host_mp \
 834         "/" \
 835         "/etc" \
 836         "/usr" \
 837         "/usr/bin" \
 838         "/usr/sbin" \
 839         "/usr/lib" \
 840         "/usr/lib64" \
 841         "/boot"
 842
 843     for mp in "${host_mp[@]}"; do
 844         mountpoint "$mp" >/dev/null 2>&1 || continue
 845         push host_devs $(readlink -f "/dev/block/$(find_block_device "$mp")")
 846     done
 847
 848     while read dev type rest; do
 849         [[ -b $dev ]] || continue
 850         [[ "$type" == "partition" ]] || continue
 851         while read _d _m _t _o _r; do
 852             [[ "$_d" == \#* ]] && continue
 853             [[ $_d ]] || continue
 854             [[ $_t != "swap" ]] || [[ $_m != "swap" ]] && continue
 855             [[ "$_o" == *noauto* ]] && continue
 856             [[ "$_d" == UUID\=* ]] && _d="/dev/disk/by-uuid/${_d#UUID=}"
 857             [[ "$_d" == LABEL\=* ]] && _d="/dev/disk/by-label/$_d#LABEL=}"
 858             [[ "$_d" -ef "$dev" ]] || continue
 859             push host_devs $(readlink -f $dev)
 860             break
 861         done < /etc/fstab
 862     done < /proc/swaps
 863
 864 fi
 865
 866 _get_fs_type() (
 867     [[ $1 ]] || return
 868     if [[ -b $1 ]] && get_fs_env $1; then
 869         echo "$(readlink -f $1) $ID_FS_TYPE"
 870         return 1
 871     fi
 872     if [[ -b /dev/block/$1 ]] && get_fs_env /dev/block/$1; then
 873         echo "$(readlink -f /dev/block/$1) $ID_FS_TYPE"
 874         return 1
 875     fi
 876     if fstype=$(find_dev_fstype $1); then
 877         echo "$1 $fstype"
 878         return 1
 879     fi
 880     return 1
 881 )
 882
 883 for dev in "${host_devs[@]}"; do
 884     while read key val; do
 885         host_fs_types["$key"]="$val"
 886     done < <(
 887         _get_fs_type $dev
 888         check_block_and_slaves_all _get_fs_type $(get_maj_min $dev)
 889     )
 890 done
 891
 892 [[ -d $udevdir ]] \
 893     || udevdir=$(pkg-config udev --variable=udevdir 2>/dev/null)
 894 if ! [[ -d "$udevdir" ]]; then
 895     [[ -d /lib/udev ]] && udevdir=/lib/udev
 896     [[ -d /usr/lib/udev ]] && udevdir=/usr/lib/udev
 897 fi
 898
 899 [[ -d $systemdutildir ]] \
 900     || systemdutildir=$(pkg-config systemd --variable=systemdutildir 2>/dev/null)
 901
 902 if ! [[ -d "$systemdutildir" ]]; then
 903     [[ -d /lib/systemd ]] && systemdutildir=/lib/systemd
 904     [[ -d /usr/lib/systemd ]] && systemdutildir=/usr/lib/systemd
 905 fi
 906
 907 [[ -d $systemdsystemunitdir ]] \
 908     || systemdsystemunitdir=$(pkg-config systemd --variable=systemdsystemunitdir 2>/dev/null)
 909
 910 [[ -d "$systemdsystemunitdir" ]] || systemdsystemunitdir=${systemdutildir}/system
 911
 912 [[ -d $systemdsystemconfdir ]] \
 913     || systemdsystemconfdir=$(pkg-config systemd --variable=systemdsystemconfdir 2>/dev/null)
 914
 915 [[ -d "$systemdsystemconfdir" ]] || systemdsystemconfdir=/etc/systemd/system
 916
 917 export initdir dracutbasedir dracutmodules \
 918     fw_dir drivers_dir debug no_kernel kernel_only \
 919     omit_drivers mdadmconf lvmconf \
 920     use_fstab fstab_lines libdirs fscks nofscks ro_mnt \
 921     stdloglvl sysloglvl fileloglvl kmsgloglvl logfile \
 922     debug host_fs_types host_devs sshkey add_fstab \
 923     DRACUT_VERSION udevdir prefix filesystems drivers \
 924     systemdutildir systemdsystemunitdir systemdsystemconfdir
 925
 926 # Create some directory structure first
 927 [[ $prefix ]] && mkdir -m 0755 -p "${initdir}${prefix}"
 928
 929 [[ -h /lib ]] || mkdir -m 0755 -p "${initdir}${prefix}/lib"
 930 [[ $prefix ]] && ln -sfn "${prefix#/}/lib" "$initdir/lib"
 931
 932 if [[ $prefix ]]; then
 933     for d in bin etc lib sbin tmp usr var $libdirs; do
 934         strstr "$d" "/" && continue
 935         ln -sfn "${prefix#/}/${d#/}" "$initdir/$d"
 936     done
 937 fi
 938
 939 if [[ $kernel_only != yes ]]; then
 940     for d in usr/bin usr/sbin bin etc lib sbin tmp usr var $libdirs; do
 941         [[ -e "${initdir}${prefix}/$d" ]] && continue
 942         if [ -L "/$d" ]; then
 943             inst_symlink "/$d" "${prefix}/$d"
 944         else
 945             mkdir -m 0755 -p "${initdir}${prefix}/$d"
 946         fi
 947     done
 948
 949     for d in dev proc sys sysroot root run run/lock run/initramfs; do
 950         if [ -L "/$d" ]; then
 951             inst_symlink "/$d"
 952         else
 953             mkdir -m 0755 -p "$initdir/$d"
 954         fi
 955     done
 956
 957     ln -sfn ../run "$initdir/var/run"
 958     ln -sfn ../run/lock "$initdir/var/lock"
 959     ln -sfn ../run/log "$initdir/var/log"
 960 else
 961     for d in lib "$libdir"; do
 962         [[ -e "${initdir}${prefix}/$d" ]] && continue
 963         if [ -h "/$d" ]; then
 964             inst "/$d" "${prefix}/$d"
 965         else
 966             mkdir -m 0755 -p "${initdir}${prefix}/$d"
 967         fi
 968     done
 969 fi
 970
 971 if [[ $kernel_only != yes ]]; then
 972     mkdir -p "${initdir}/etc/cmdline.d"
 973     for _d in $hookdirs; do
 974         mkdir -m 0755 -p ${initdir}/lib/dracut/hooks/$_d
 975     done
 976     if [[ "$UID" = "0" ]]; then
 977         [ -c ${initdir}/dev/null ] || mknod ${initdir}/dev/null c 1 3
 978         [ -c ${initdir}/dev/kmsg ] || mknod ${initdir}/dev/kmsg c 1 11
 979         [ -c ${initdir}/dev/console ] || mknod ${initdir}/dev/console c 5 1
 980     fi
 981 fi
 982
 983 mods_to_load=""
 984 # check all our modules to see if they should be sourced.
 985 # This builds a list of modules that we will install next.
 986 for_each_module_dir check_module
 987 for_each_module_dir check_mount
 988
 989 strstr "$mods_to_load" "fips" && export DRACUT_FIPS_MODE=1
 990
 991 _isize=0 #initramfs size
 992 modules_loaded=" "
 993 # source our modules.
 994 for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
 995     _d_mod=${moddir##*/}; _d_mod=${_d_mod#[0-9][0-9]}
 996     if strstr "$mods_to_load" " $_d_mod "; then
 997         [[ $show_modules = yes ]] && echo "$_d_mod" || \
 998             dinfo "*** Including module: $_d_mod ***"
 999         if [[ $kernel_only = yes ]]; then
1000             module_installkernel $_d_mod || {
1001                 dfatal "installkernel failed in module $_d_mod"
1002                 exit 1
1003             }
1004         else
1005             module_install $_d_mod
1006             if [[ $no_kernel != yes ]]; then
1007                 module_installkernel $_d_mod || {
1008                     dfatal "installkernel failed in module $_d_mod"
1009                     exit 1
1010                 }
1011             fi
1012         fi
1013         mods_to_load=${mods_to_load// $_d_mod /}
1014         modules_loaded+="$_d_mod "
1015
1016         #print the module install size
1017         if [ -n "$printsize" ]; then
1018             _isize_new=$(du -sk ${initdir}|cut -f1)
1019             _isize_delta=$(($_isize_new - $_isize))
1020             echo "$_d_mod install size: ${_isize_delta}k"
1021             _isize=$_isize_new
1022         fi
1023     fi
1024 done
1025 unset moddir
1026
1027 for i in $modules_loaded; do
1028     mkdir -p $initdir/lib/dracut
1029     echo "$i" >> $initdir/lib/dracut/modules.txt
1030 done
1031
1032 dinfo "*** Including modules done ***"
1033
1034 ## final stuff that has to happen
1035 if [[ $no_kernel != yes ]]; then
1036
1037     if [[ $drivers ]]; then
1038         hostonly='' instmods $drivers
1039     fi
1040
1041     if [[ $add_drivers ]]; then
1042         hostonly='' instmods -c $add_drivers
1043     fi
1044     if [[ $filesystems ]]; then
1045         hostonly='' instmods -c $filesystems
1046     fi
1047
1048     dinfo "*** Installing kernel module dependencies and firmware ***"
1049     dracut_kernel_post
1050     dinfo "*** Installing kernel module dependencies and firmware done ***"
1051
1052     if [[ $noimageifnotneeded == yes ]] && [[ $hostonly ]]; then
1053         if [[ ! -f "$initdir/lib/dracut/need-initqueue" ]] && \
1054             [[ -f ${initdir}/lib/modules/$kernel/modules.dep && ! -s ${initdir}/lib/modules/$kernel/modules.dep ]]; then
1055             for i in ${initdir}/etc/cmdline.d/*.conf; do
1056                 # We need no initramfs image and do not generate one.
1057                 [[ $i == "${initdir}/etc/cmdline.d/*.conf" ]] && exit 0
1058             done
1059         fi
1060     fi
1061 fi
1062
1063 if [[ $kernel_only != yes ]]; then
1064     (( ${#install_items[@]} > 0 )) && dracut_install  ${install_items[@]}
1065
1066     [[ $kernel_cmdline ]] && echo "$kernel_cmdline" >> "${initdir}/etc/cmdline.d/01-default.conf"
1067
1068     while pop fstab_lines line; do
1069         echo "$line 0 0" >> "${initdir}/etc/fstab"
1070     done
1071
1072     for f in $add_fstab; do
1073         cat $f >> "${initdir}/etc/fstab"
1074     done
1075
1076     if [ -d ${initdir}/$systemdutildir ]; then
1077         mkdir -p ${initdir}/etc/conf.d
1078         {
1079             echo "systemdutildir=\"$systemdutildir\""
1080             echo "systemdsystemunitdir=\"$systemdsystemunitdir\""
1081             echo "systemdsystemconfdir=\"$systemdsystemconfdir\""
1082         } > ${initdir}/etc/conf.d/systemd.conf
1083     fi
1084
1085     if [[ $DRACUT_RESOLVE_LAZY ]] && [[ $DRACUT_INSTALL ]]; then
1086         dinfo "*** Resolving executable dependencies ***"
1087         find "$initdir" -type f \
1088             '(' -perm -0100 -or -perm -0010 -or -perm -0001 ')' \
1089             -not -path '*.ko' -print0 \
1090         | xargs -r -0 $DRACUT_INSTALL ${initdir+-D "$initdir"} -R ${DRACUT_FIPS_MODE+-H}
1091         dinfo "*** Resolving executable dependencies done***"
1092     fi
1093 fi
1094
1095 while pop include_src src && pop include_target tgt; do
1096     if [[ $src && $tgt ]]; then
1097         if [[ -f $src ]]; then
1098             inst $src $tgt
1099         else
1100             ddebug "Including directory: $src"
1101             mkdir -p "${initdir}/${tgt}"
1102             # check for preexisting symlinks, so we can cope with the
1103             # symlinks to $prefix
1104             for i in "$src"/*; do
1105                 [[ -e "$i" || -h "$i" ]] || continue
1106                 s=${initdir}/${tgt}/${i#$src/}
1107                 if [[ -d "$i" ]]; then
1108                     if ! [[ -e "$s" ]]; then
1109                         mkdir -m 0755 -p "$s"
1110                         chmod --reference="$i" "$s"
1111                     fi
1112                     cp --reflink=auto --sparse=auto -fa -t "$s" "$i"/*
1113                 else
1114                     cp --reflink=auto --sparse=auto -fa -t "$s" "$i"
1115                 fi
1116             done
1117         fi
1118     fi
1119 done
1120
1121 if [[ $kernel_only != yes ]]; then
1122     # make sure that library links are correct and up to date
1123     for f in /etc/ld.so.conf /etc/ld.so.conf.d/*; do
1124         [[ -f $f ]] && inst_simple "$f"
1125     done
1126     if ! ldconfig -r "$initdir"; then
1127         if [[ $UID = 0 ]]; then
1128             derror "ldconfig exited ungracefully"
1129         else
1130             derror "ldconfig might need uid=0 (root) for chroot()"
1131         fi
1132     fi
1133 fi
1134
1135 if (($maxloglvl >= 5)); then
1136     ddebug "Listing sizes of included files:"
1137     du -c "$initdir" | sort -n | ddebug
1138 fi
1139
1140 PRELINK_BIN=$(command -v prelink)
1141 if [[ $UID = 0 ]] && [[ $PRELINK_BIN ]]; then
1142     if [[ $DRACUT_FIPS_MODE ]]; then
1143         dinfo "*** Installing prelink files ***"
1144         dracut_install -o prelink /etc/prelink.conf /etc/prelink.conf.d/*.conf /etc/prelink.cache
1145     else
1146         dinfo "*** Pre-linking files ***"
1147         dracut_install -o prelink /etc/prelink.conf /etc/prelink.conf.d/*.conf
1148         chroot "$initdir" $PRELINK_BIN -a
1149         rm -f "$initdir"/$PRELINK_BIN
1150         rm -fr "$initdir"/etc/prelink.*
1151         dinfo "*** Pre-linking files done ***"
1152     fi
1153 fi
1154
1155 if [[ $do_hardlink = yes ]] && command -v hardlink >/dev/null; then
1156     dinfo "*** Hardlinking files ***"
1157     hardlink "$initdir" 2>&1
1158     dinfo "*** Hardlinking files done ***"
1159 fi
1160
1161 # strip binaries
1162 if [[ $do_strip = yes ]] ; then
1163     for p in strip xargs find; do
1164         if ! type -P $p >/dev/null; then
1165             dwarn "Could not find '$p'. Not stripping the initramfs."
1166             do_strip=no
1167         fi
1168     done
1169 fi
1170
1171 if [[ $do_strip = yes ]] ; then
1172     dinfo "*** Stripping files ***"
1173     if [[ $DRACUT_FIPS_MODE ]]; then
1174         find "$initdir" -type f \
1175             -executable -not -path '*/lib/modules/*.ko' -print0 \
1176             | while read -r -d $'\0' f; do
1177             if ! [[ -e "${f%/*}/.${f##*/}.hmac" ]] \
1178                 && ! [[ -e "/lib/hmaccalc/${f##*/}.hmac" ]] \
1179                 && ! [[ -e "/lib64/hmaccalc/${f##*/}.hmac" ]] \
1180                 && ! [[ -e "/lib/fipscheck/${f##*/}.hmac" ]] \
1181                 && ! [[ -e "/lib64/fipscheck/${f##*/}.hmac" ]]; then
1182                 echo -n "$f"; echo -n -e "\000"
1183             fi
1184         done | xargs -r -0 strip -g 2>/dev/null
1185     else
1186         find "$initdir" -type f \
1187             -executable -not -path '*/lib/modules/*.ko' -print0 \
1188             | xargs -r -0 strip -g 2>/dev/null
1189     fi
1190
1191     # strip kernel modules, but do not touch signed modules
1192     find "$initdir" -type f -path '*/lib/modules/*.ko' -print0 \
1193         | while read -r -d $'\0' f; do
1194         SIG=$(tail -c 28 "$f")
1195         [[ $SIG == '~Module signature appended~' ]] || { echo -n "$f"; echo -n -e "\000"; }
1196     done | xargs -r -0 strip -g
1197
1198     dinfo "*** Stripping files done ***"
1199 fi
1200
1201 rm -f "$outfile"
1202 dinfo "*** Creating image file ***"
1203 if ! ( umask 077; cd "$initdir"; find . |cpio -R 0:0 -H newc -o --quiet| \
1204     $compress > "$outfile.$$"; ); then
1205     dfatal "dracut: creation of $outfile.$$ failed"
1206     exit 1
1207 fi
1208 mv $outfile.$$ $outfile
1209 dinfo "*** Creating image file done ***"
1210
1211 dinfo "Wrote $outfile:"
1212 dinfo "$(ls -l "$outfile")"
1213
1214 exit 0