dracut-functions.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 # functions used by dracut and other tools.
   6 #
   7 # Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 #
  22 export LC_MESSAGES=C
  23
  24 if [[ $DRACUT_KERNEL_LAZY ]] && ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
  25     if ! [[ -d "$initdir/.kernelmodseen" ]]; then
  26         mkdir -p "$initdir/.kernelmodseen"
  27     fi
  28     DRACUT_KERNEL_LAZY_HASHDIR="$initdir/.kernelmodseen"
  29 fi
  30
  31 if [[ $initdir ]] && ! [[ -d $initdir ]]; then
  32     mkdir -p "$initdir"
  33 fi
  34
  35 # Generic substring function.  If $2 is in $1, return 0.
  36 strstr() { [[ $1 = *$2* ]]; }
  37
  38 # find a binary.  If we were not passed the full path directly,
  39 # search in the usual places to find the binary.
  40 find_binary() {
  41     if [[ -z ${1##/*} ]]; then
  42         if [[ -x $1 ]] || { strstr "$1" ".so" && ldd $1 &>/dev/null; };  then
  43             echo $1
  44             return 0
  45         fi
  46     fi
  47
  48     type -P ${1##*/}
  49 }
  50
  51 if ! [[ $dracutbasedir ]]; then
  52     dracutbasedir=${BASH_SOURCE[0]%/*}
  53     [[ $dracutbasedir = "dracut-functions" ]] && dracutbasedir="."
  54     [[ $dracutbasedir ]] || dracutbasedir="."
  55     dracutbasedir="$(readlink -f $dracutbasedir)"
  56 fi
  57
  58 if ! [[ $DRACUT_INSTALL ]]; then
  59     DRACUT_INSTALL=$(find_binary dracut-install)
  60 fi
  61
  62 if ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/dracut-install ]]; then
  63     DRACUT_INSTALL=$dracutbasedir/dracut-install
  64 fi
  65
  66 # Detect lib paths
  67 if ! [[ $libdirs ]] ; then
  68     if strstr "$(ldd /bin/sh)" "/lib64/" &>/dev/null \
  69         && [[ -d /lib64 ]]; then
  70         libdirs+=" /lib64"
  71         [[ -d /usr/lib64 ]] && libdirs+=" /usr/lib64"
  72     else
  73         libdirs+=" /lib"
  74         [[ -d /usr/lib ]] && libdirs+=" /usr/lib"
  75     fi
  76     export libdirs
  77 fi
  78
  79 if ! [[ $kernel ]]; then
  80     kernel=$(uname -r)
  81     export kernel
  82 fi
  83
  84 srcmods="/lib/modules/$kernel/"
  85 [[ $drivers_dir ]] && {
  86     if vercmp $(modprobe --version | cut -d' ' -f3) lt 3.7; then
  87         dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.'
  88         exit 1
  89     fi
  90     srcmods="$drivers_dir"
  91 }
  92 export srcmods
  93
  94 if ! type dinfo >/dev/null 2>&1; then
  95     . "$dracutbasedir/dracut-logger.sh"
  96     dlog_init
  97 fi
  98
  99 if ! [[ $initdir ]]; then
 100     dfatal "initdir not set"
 101     exit 1
 102 fi
 103
 104 # export standard hookdirs
 105 [[ $hookdirs ]] || {
 106     hookdirs="cmdline pre-udev pre-trigger netroot "
 107     hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "
 108     hookdirs+="pre-mount pre-pivot cleanup mount "
 109     hookdirs+="emergency shutdown-emergency pre-shutdown shutdown "
 110     export hookdirs
 111 }
 112
 113 # Create all subdirectories for given path without creating the last element.
 114 # $1 = path
 115 mksubdirs() { [[ -e ${1%/*} ]] || mkdir -m 0755 -p ${1%/*}; }
 116
 117 # Version comparision function.  Assumes Linux style version scheme.
 118 # $1 = version a
 119 # $2 = comparision op (gt, ge, eq, le, lt, ne)
 120 # $3 = version b
 121 vercmp() {
 122     local _n1=(${1//./ }) _op=$2 _n2=(${3//./ }) _i _res
 123
 124     for ((_i=0; ; _i++))
 125     do
 126         if [[ ! ${_n1[_i]}${_n2[_i]} ]]; then _res=0
 127         elif ((${_n1[_i]:-0} > ${_n2[_i]:-0})); then _res=1
 128         elif ((${_n1[_i]:-0} < ${_n2[_i]:-0})); then _res=2
 129         else continue
 130         fi
 131         break
 132     done
 133
 134     case $_op in
 135         gt) ((_res == 1));;
 136         ge) ((_res != 2));;
 137         eq) ((_res == 0));;
 138         le) ((_res != 1));;
 139         lt) ((_res == 2));;
 140         ne) ((_res != 0));;
 141     esac
 142 }
 143
 144 # is_func <command>
 145 # Check whether $1 is a function.
 146 is_func() {
 147     [[ $(type -t $1) = "function" ]]
 148 }
 149
 150 # Function prints global variables in format name=value line by line.
 151 # $@ = list of global variables' name
 152 print_vars() {
 153     local _var _value
 154
 155     for _var in $@
 156     do
 157         _value=$(eval echo \$$_var)
 158         [[ ${_value} ]] && echo "${_var}=\"${_value}\""
 159     done
 160 }
 161
 162 # normalize_path <path>
 163 # Prints the normalized path, where it removes any duplicated
 164 # and trailing slashes.
 165 # Example:
 166 # $ normalize_path ///test/test//
 167 # /test/test
 168 normalize_path() {
 169     shopt -q -s extglob
 170     set -- "${1//+(\/)//}"
 171     shopt -q -u extglob
 172     echo "${1%/}"
 173 }
 174
 175 # convert_abs_rel <from> <to>
 176 # Prints the relative path, when creating a symlink to <to> from <from>.
 177 # Example:
 178 # $ convert_abs_rel /usr/bin/test /bin/test-2
 179 # ../../bin/test-2
 180 # $ ln -s $(convert_abs_rel /usr/bin/test /bin/test-2) /usr/bin/test
 181 convert_abs_rel() {
 182     local __current __absolute __abssize __cursize __newpath
 183     local -i __i __level
 184
 185     set -- "$(normalize_path "$1")" "$(normalize_path "$2")"
 186
 187     # corner case #1 - self looping link
 188     [[ "$1" == "$2" ]] && { echo "${1##*/}"; return; }
 189
 190     # corner case #2 - own dir link
 191     [[ "${1%/*}" == "$2" ]] && { echo "."; return; }
 192
 193     IFS="/" __current=($1)
 194     IFS="/" __absolute=($2)
 195
 196     __abssize=${#__absolute[@]}
 197     __cursize=${#__current[@]}
 198
 199     while [[ ${__absolute[__level]} == ${__current[__level]} ]]
 200     do
 201         (( __level++ ))
 202         if (( __level > __abssize || __level > __cursize ))
 203         then
 204             break
 205         fi
 206     done
 207
 208     for ((__i = __level; __i < __cursize-1; __i++))
 209     do
 210         if ((__i > __level))
 211         then
 212             __newpath=$__newpath"/"
 213         fi
 214         __newpath=$__newpath".."
 215     done
 216
 217     for ((__i = __level; __i < __abssize; __i++))
 218     do
 219         if [[ -n $__newpath ]]
 220         then
 221             __newpath=$__newpath"/"
 222         fi
 223         __newpath=$__newpath${__absolute[__i]}
 224     done
 225
 226     echo "$__newpath"
 227 }
 228
 229 if strstr "$(ln --help)" "--relative"; then
 230     ln_r() {
 231         ln -sfnr "${initdir}/$1" "${initdir}/$2"
 232     }
 233 else
 234     ln_r() {
 235         local _source=$1
 236         local _dest=$2
 237         [[ -d "${_dest%/*}" ]] && _dest=$(readlink -f "${_dest%/*}")/${_dest##*/}
 238         ln -sfn $(convert_abs_rel "${_dest}" "${_source}") "${initdir}/${_dest}"
 239     }
 240 fi
 241
 242 get_persistent_dev() {
 243     local i _tmp _dev
 244
 245     _dev=$(udevadm info --query=name --name="$1" 2>/dev/null)
 246     [ -z "$_dev" ] && return
 247
 248     for i in /dev/mapper/* /dev/disk/by-uuid/* /dev/disk/by-id/*; do
 249         _tmp=$(udevadm info --query=name --name="$i" 2>/dev/null)
 250         if [ "$_tmp" = "$_dev" ]; then
 251             echo $i
 252             return
 253         fi
 254     done
 255 }
 256
 257 # get_fs_env <device>
 258 # Get and set the ID_FS_TYPE and ID_FS_UUID variable from udev for a device.
 259 # Example:
 260 # $ get_fs_env /dev/sda2; echo $ID_FS_TYPE; echo $ID_FS_UUID
 261 # ext4
 262 # 551a39aa-4ae9-4e70-a262-ef665cadb574
 263 get_fs_env() {
 264     local evalstr
 265     local found
 266
 267     [[ $1 ]] || return
 268     unset ID_FS_TYPE
 269     unset ID_FS_UUID
 270     if evalstr=$(udevadm info --query=env --name=$1 \
 271         | { while read line; do
 272             strstr "$line" "DEVPATH" && found=1;
 273             strstr "$line" "ID_FS_TYPE=" && { echo $line; exit 0;}
 274             done; [[ $found ]] && exit 0; exit 1; }) ; then
 275         eval $evalstr
 276         [[ $ID_FS_TYPE ]] && return 0
 277         return 1
 278     fi
 279
 280     # Fallback, if we don't have udev information
 281     if find_binary blkid >/dev/null; then
 282         eval $(blkid -o udev $1 \
 283             | while read line; do
 284                 strstr "$line" "ID_FS_TYPE=" && echo $line;
 285                 done)
 286         [[ $ID_FS_TYPE ]] && return 0
 287     fi
 288     return 1
 289 }
 290
 291 # get_maj_min <device>
 292 # Prints the major and minor of a device node.
 293 # Example:
 294 # $ get_maj_min /dev/sda2
 295 # 8:2
 296 get_maj_min() {
 297     local _dev
 298     _dev=$(stat -L -c '$((0x%t)):$((0x%T))' "$1" 2>/dev/null)
 299     _dev=$(eval "echo $_dev")
 300     echo $_dev
 301 }
 302
 303 # find_block_device <mountpoint>
 304 # Prints the major and minor number of the block device
 305 # for a given mountpoint.
 306 # Unless $use_fstab is set to "yes" the functions
 307 # uses /proc/self/mountinfo as the primary source of the
 308 # information and only falls back to /etc/fstab, if the mountpoint
 309 # is not found there.
 310 # Example:
 311 # $ find_block_device /usr
 312 # 8:4
 313 find_block_device() {
 314     local _x _mpt _majmin _dev _fs _maj _min _find_mpt
 315     _find_mpt="$1"
 316     if [[ $use_fstab != yes ]]; then
 317         while read _x; do
 318             set -- $_x
 319             _majmin="$3"
 320             _mpt="$5"
 321             [[ $8 = "-" ]] && shift
 322             _fs="$8"
 323             _dev="$9"
 324             [[ $_mpt = $_find_mpt ]] || continue
 325             [[ $_fs = nfs ]] && { echo $_dev; return 0;}
 326             [[ $_fs = nfs3 ]] && { echo $_dev; return 0;}
 327             [[ $_fs = nfs4 ]] && { echo $_dev; return 0;}
 328             [[ $_fs = btrfs ]] && {
 329                 get_maj_min $_dev
 330                 return 0;
 331             }
 332             if [[ ${_majmin#0:} = $_majmin ]]; then
 333                 echo $_majmin
 334                 return 0 # we have a winner!
 335             fi
 336         done < /proc/self/mountinfo
 337     fi
 338     # fall back to /etc/fstab
 339     while read _dev _mpt _fs _x; do
 340         [ "${_dev%%#*}" != "$_dev" ] && continue
 341
 342         if [[ $_mpt = $_find_mpt ]]; then
 343             [[ $_fs = nfs ]] && { echo $_dev; return 0;}
 344             [[ $_fs = nfs3 ]] && { echo $_dev; return 0;}
 345             [[ $_fs = nfs4 ]] && { echo $_dev; return 0;}
 346             [[ $_dev != ${_dev#UUID=} ]] && _dev=/dev/disk/by-uuid/${_dev#UUID=}
 347             [[ $_dev != ${_dev#LABEL=} ]] && _dev=/dev/disk/by-label/${_dev#LABEL=}
 348             [[ -b $_dev ]] || return 1 # oops, not a block device.
 349             get_maj_min "$_dev" && return 0
 350         fi
 351     done < /etc/fstab
 352
 353     return 1
 354 }
 355
 356 # find_dev_fstype <device>
 357 # Echo the filesystem type for a given device.
 358 # /proc/self/mountinfo is taken as the primary source of information
 359 # and /etc/fstab is used as a fallback.
 360 # No newline is appended!
 361 # Example:
 362 # $ find_dev_fstype /dev/sda2;echo
 363 # ext4
 364 find_dev_fstype() {
 365     local _x _mpt _majmin _dev _fs _maj _min _find_dev
 366     _find_dev="$1"
 367     strstr "$_find_dev" "/dev" || _find_dev="/dev/block/$_find_dev"
 368     while read _x; do
 369         set -- $_x
 370         _majmin="$3"
 371         _mpt="$5"
 372         [[ $8 = "-" ]] && shift
 373         _fs="$8"
 374         _dev="$9"
 375         strstr "$_dev" "/dev" || continue
 376         [[ $_dev -ef $_find_dev ]] || continue
 377         [[ $_fs = "autofs" ]] && continue
 378         echo -n $_fs;
 379         return 0;
 380     done < /proc/self/mountinfo
 381
 382     # fall back to /etc/fstab
 383     while read _dev _mpt _fs _x; do
 384         [ "${_dev%%#*}" != "$_dev" ] && continue
 385         case "$_dev" in
 386             LABEL=*)
 387                 _dev="$(echo $_dev | sed 's,/,\\x2f,g')"
 388                 _dev="/dev/disk/by-label/${_dev#LABEL=}"
 389                 ;;
 390             UUID=*)
 391                 _dev="/dev/disk/by-uuid/${_dev#UUID=}"
 392                 ;;
 393             PARTUUID=*)
 394                 _dev="/dev/disk/by-partuuid/${_dev#PARTUUID=}"
 395                 ;;
 396         esac
 397
 398         [[ $_dev -ef $_find_dev ]] || continue
 399         echo -n $_fs;
 400         return 0;
 401     done < /etc/fstab
 402
 403     return 1
 404 }
 405
 406 # find_mp_fstype <mountpoint>
 407 # Echo the filesystem type for a given mountpoint.
 408 # /proc/self/mountinfo is taken as the primary source of information
 409 # and /etc/fstab is used as a fallback.
 410 # No newline is appended!
 411 # Example:
 412 # $ find_mp_fstype /;echo
 413 # ext4
 414 find_mp_fstype() {
 415     local _x _mpt _majmin _dev _fs _maj _min _find_mpt
 416     _find_mpt="$1"
 417     while read _x; do
 418         set -- $_x
 419         _majmin="$3"
 420         _mpt="$5"
 421         [[ $8 = "-" ]] && shift
 422         _fs="$8"
 423         _dev="$9"
 424         [[ $_mpt = $_find_mpt ]] || continue
 425         [[ $_fs = "autofs" ]] && continue
 426         echo -n $_fs;
 427         return 0;
 428     done < /proc/self/mountinfo
 429
 430     # fall back to /etc/fstab
 431     while read _dev _mpt _fs _x; do
 432         [ "${_dev%%#*}" != "$_dev" ] && continue
 433         [[ $_mpt = $_find_mpt ]] || continue
 434         echo -n $_fs;
 435         return 0;
 436     done < /etc/fstab
 437
 438     return 1
 439 }
 440
 441 # finds the major:minor of the block device backing the root filesystem.
 442 find_root_block_device() { find_block_device /; }
 443
 444 # for_each_host_dev_fs <func>
 445 # Execute "<func> <dev> <filesystem>" for every "<dev>|<fs>" pair found
 446 # in ${host_fs_types[@]}
 447 for_each_host_dev_fs()
 448 {
 449     local _func="$1"
 450     local _dev
 451     local _fs
 452     local _ret=1
 453     for f in ${host_fs_types[@]}; do
 454         OLDIFS="$IFS"
 455         IFS="|"
 456         set -- $f
 457         IFS="$OLDIFS"
 458         _dev="$1"
 459         [[ -b "$_dev" ]] || continue
 460         _fs="$2"
 461         $_func $_dev $_fs && _ret=0
 462     done
 463     return $_ret
 464 }
 465
 466 # Walk all the slave relationships for a given block device.
 467 # Stop when our helper function returns success
 468 # $1 = function to call on every found block device
 469 # $2 = block device in major:minor format
 470 check_block_and_slaves() {
 471     local _x
 472     [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
 473     "$1" $2 && return
 474     check_vol_slaves "$@" && return 0
 475     if [[ -f /sys/dev/block/$2/../dev ]]; then
 476         check_block_and_slaves $1 $(cat "/sys/dev/block/$2/../dev") && return 0
 477     fi
 478     [[ -d /sys/dev/block/$2/slaves ]] || return 1
 479     for _x in /sys/dev/block/$2/slaves/*/dev; do
 480         [[ -f $_x ]] || continue
 481         check_block_and_slaves $1 $(cat "$_x") && return 0
 482     done
 483     return 1
 484 }
 485
 486 check_block_and_slaves_all() {
 487     local _x _ret=1
 488     [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
 489     if "$1" $2; then
 490           _ret=0
 491     fi
 492     check_vol_slaves "$@" && return 0
 493     if [[ -f /sys/dev/block/$2/../dev ]]; then
 494         check_block_and_slaves_all $1 $(cat "/sys/dev/block/$2/../dev") && _ret=0
 495     fi
 496     [[ -d /sys/dev/block/$2/slaves ]] || return 1
 497     for _x in /sys/dev/block/$2/slaves/*/dev; do
 498         [[ -f $_x ]] || continue
 499         check_block_and_slaves_all $1 $(cat "$_x") && _ret=0
 500     done
 501     return $_ret
 502 }
 503 # for_each_host_dev_and_slaves <func>
 504 # Execute "<func> <dev>" for every "<dev>" found
 505 # in ${host_devs[@]} and their slaves
 506 for_each_host_dev_and_slaves_all()
 507 {
 508     local _func="$1"
 509     local _dev
 510     local _ret=1
 511     for _dev in ${host_devs[@]}; do
 512         [[ -b "$_dev" ]] || continue
 513         if check_block_and_slaves_all $_func $(get_maj_min $_dev); then
 514                _ret=0
 515         fi
 516     done
 517     return $_ret
 518 }
 519
 520 for_each_host_dev_and_slaves()
 521 {
 522     local _func="$1"
 523     local _dev
 524     for _dev in ${host_devs[@]}; do
 525         [[ -b "$_dev" ]] || continue
 526         check_block_and_slaves $_func $(get_maj_min $_dev) && return 0
 527     done
 528     return 1
 529 }
 530
 531 # ugly workaround for the lvm design
 532 # There is no volume group device,
 533 # so, there are no slave devices for volume groups.
 534 # Logical volumes only have the slave devices they really live on,
 535 # but you cannot create the logical volume without the volume group.
 536 # And the volume group might be bigger than the devices the LV needs.
 537 check_vol_slaves() {
 538     local _lv _vg _pv
 539     for i in /dev/mapper/*; do
 540         _lv=$(get_maj_min $i)
 541         if [[ $_lv = $2 ]]; then
 542             _vg=$(lvm lvs --noheadings -o vg_name $i 2>/dev/null)
 543             # strip space
 544             _vg=$(echo $_vg)
 545             if [[ $_vg ]]; then
 546                 for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2>/dev/null)
 547                 do
 548                     check_block_and_slaves $1 $(get_maj_min $_pv) && return 0
 549                 done
 550             fi
 551         fi
 552     done
 553     return 1
 554 }
 555
 556 # fs_get_option <filesystem options> <search for option>
 557 # search for a specific option in a bunch of filesystem options
 558 # and return the value
 559 fs_get_option() {
 560     local _fsopts=$1
 561     local _option=$2
 562     local OLDIFS="$IFS"
 563     IFS=,
 564     set -- $_fsopts
 565     IFS="$OLDIFS"
 566     while [ $# -gt 0 ]; do
 567         case $1 in
 568             $_option=*)
 569                 echo ${1#${_option}=}
 570                 break
 571         esac
 572         shift
 573     done
 574 }
 575
 576 if [[ $DRACUT_INSTALL ]]; then
 577     [[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1
 578     inst_dir() {
 579         [[ -e ${initdir}/"$1" ]] && return 0  # already there
 580         $DRACUT_INSTALL ${initdir+-D "$initdir"} -d "$@"
 581         (($? != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} -d "$@" || :
 582     }
 583
 584     inst() {
 585         [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 586         #dinfo "$DRACUT_INSTALL -l $@"
 587         $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l} ${DRACUT_FIPS_MODE+-H} "$@"
 588         (($? != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l} ${DRACUT_FIPS_MODE+-H} "$@" || :
 589     }
 590
 591     inst_simple() {
 592         [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 593         [[ -e $1 ]] || return 1  # no source
 594         $DRACUT_INSTALL ${initdir+-D "$initdir"} "$@"
 595         (($? != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} "$@" || :
 596     }
 597
 598     inst_symlink() {
 599         [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 600         [[ -L $1 ]] || return 1
 601         $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@"
 602         (($? != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@" || :
 603     }
 604
 605     dracut_install() {
 606         local ret
 607         #dinfo "initdir=$initdir $DRACUT_INSTALL -l $@"
 608         $DRACUT_INSTALL ${initdir+-D "$initdir"} -a ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@"
 609         ret=$?
 610         (($ret != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} -a ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@" || :
 611         return $ret
 612     }
 613
 614     inst_library() {
 615         [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 616         [[ -e $1 ]] || return 1  # no source
 617         $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@"
 618         (($? != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@" || :
 619     }
 620
 621     inst_binary() {
 622         $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@"
 623         (($? != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@" || :
 624     }
 625
 626     inst_script() {
 627         $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@"
 628         (($? != 0)) && derror $DRACUT_INSTALL ${initdir+-D "$initdir"} ${DRACUT_RESOLVE_DEPS+-l}  ${DRACUT_FIPS_MODE+-H} "$@" || :
 629     }
 630
 631 else
 632
 633     # Install a directory, keeping symlinks as on the original system.
 634     # Example: if /lib points to /lib64 on the host, "inst_dir /lib/file"
 635     # will create ${initdir}/lib64, ${initdir}/lib64/file,
 636     # and a symlink ${initdir}/lib -> lib64.
 637     inst_dir() {
 638         [[ -e ${initdir}/"$1" ]] && return 0  # already there
 639
 640         local _dir="$1" _part="${1%/*}" _file
 641         while [[ "$_part" != "${_part%/*}" ]] && ! [[ -e "${initdir}/${_part}" ]]; do
 642             _dir="$_part $_dir"
 643             _part=${_part%/*}
 644         done
 645
 646         # iterate over parent directories
 647         for _file in $_dir; do
 648             [[ -e "${initdir}/$_file" ]] && continue
 649             if [[ -L $_file ]]; then
 650                 inst_symlink "$_file"
 651             else
 652             # create directory
 653                 mkdir -m 0755 -p "${initdir}/$_file" || return 1
 654                 [[ -e "$_file" ]] && chmod --reference="$_file" "${initdir}/$_file"
 655                 chmod u+w "${initdir}/$_file"
 656             fi
 657         done
 658     }
 659
 660     # $1 = file to copy to ramdisk
 661     # $2 (optional) Name for the file on the ramdisk
 662     # Location of the image dir is assumed to be $initdir
 663     # We never overwrite the target if it exists.
 664     inst_simple() {
 665         [[ -f "$1" ]] || return 1
 666         strstr "$1" "/" || return 1
 667         local _src=$1 _target="${2:-$1}"
 668
 669         [[ -L $_src ]] && { inst_symlink $_src $_target; return $?; }
 670
 671         if ! [[ -d ${initdir}/$_target ]]; then
 672             [[ -e ${initdir}/$_target ]] && return 0
 673             [[ -L ${initdir}/$_target ]] && return 0
 674             [[ -d "${initdir}/${_target%/*}" ]] || inst_dir "${_target%/*}"
 675         fi
 676         if [[ $DRACUT_FIPS_MODE ]]; then
 677             # install checksum files also
 678             if [[ -e "${_src%/*}/.${_src##*/}.hmac" ]]; then
 679                 inst "${_src%/*}/.${_src##*/}.hmac" "${_target%/*}/.${_target##*/}.hmac"
 680             fi
 681             if [[ -e "/lib/fipscheck/${_src##*/}.hmac" ]]; then
 682                 inst "/lib/fipscheck/${_src##*/}.hmac" "/lib/fipscheck/${_target##*/}.hmac"
 683             fi
 684             if [[ -e "/lib64/fipscheck/${_src##*/}.hmac" ]]; then
 685                 inst "/lib64/fipscheck/${_src##*/}.hmac" "/lib64/fipscheck/${_target##*/}.hmac"
 686             fi
 687         fi
 688         ddebug "Installing $_src"
 689         cp --reflink=auto --sparse=auto -pfL "$_src" "${initdir}/$_target"
 690     }
 691
 692     # same as above, but specialized for symlinks
 693     inst_symlink() {
 694         local _src=$1 _target=${2:-$1} _realsrc
 695         strstr "$1" "/" || return 1
 696         [[ -L $1 ]] || return 1
 697         [[ -L $initdir/$_target ]] && return 0
 698         _realsrc=$(readlink -f "$_src")
 699         if ! [[ -e $initdir/$_realsrc ]]; then
 700             if [[ -d $_realsrc ]]; then
 701                 inst_dir "$_realsrc"
 702             else
 703                 inst "$_realsrc"
 704             fi
 705         fi
 706         [[ ! -e $initdir/${_target%/*} ]] && inst_dir "${_target%/*}"
 707
 708         ln_r "${_realsrc}" "${_target}"
 709     }
 710
 711     # Same as above, but specialized to handle dynamic libraries.
 712     # It handles making symlinks according to how the original library
 713     # is referenced.
 714     inst_library() {
 715         local _src="$1" _dest=${2:-$1} _lib _reallib _symlink
 716         strstr "$1" "/" || return 1
 717         [[ -e $initdir/$_dest ]] && return 0
 718         if [[ -L $_src ]]; then
 719             if [[ $DRACUT_FIPS_MODE ]]; then
 720                 # install checksum files also
 721                 if [[ -e "${_src%/*}/.${_src##*/}.hmac" ]]; then
 722                     inst "${_src%/*}/.${_src##*/}.hmac" "${_dest%/*}/.${_dest##*/}.hmac"
 723                 fi
 724                 if [[ -e "/lib/fipscheck/${_src##*/}.hmac" ]]; then
 725                     inst "/lib/fipscheck/${_src##*/}.hmac" "/lib/fipscheck/${_dest##*/}.hmac"
 726                 fi
 727                 if [[ -e "/lib64/fipscheck/${_src##*/}.hmac" ]]; then
 728                     inst "/lib64/fipscheck/${_src##*/}.hmac" "/lib64/fipscheck/${_dest##*/}.hmac"
 729                 fi
 730             fi
 731             _reallib=$(readlink -f "$_src")
 732             inst_simple "$_reallib" "$_reallib"
 733             inst_dir "${_dest%/*}"
 734             ln_r "${_reallib}" "${_dest}"
 735         else
 736             inst_simple "$_src" "$_dest"
 737         fi
 738
 739         # Create additional symlinks.  See rev_symlinks description.
 740         for _symlink in $(rev_lib_symlinks $_src) $(rev_lib_symlinks $_reallib); do
 741             [[ ! -e $initdir/$_symlink ]] && {
 742                 ddebug "Creating extra symlink: $_symlink"
 743                 inst_symlink $_symlink
 744             }
 745         done
 746     }
 747
 748     # Same as above, but specialized to install binary executables.
 749     # Install binary executable, and all shared library dependencies, if any.
 750     inst_binary() {
 751         local _bin _target
 752         _bin=$(find_binary "$1") || return 1
 753         _target=${2:-$_bin}
 754         [[ -e $initdir/$_target ]] && return 0
 755         local _file _line
 756         local _so_regex='([^ ]*/lib[^/]*/[^ ]*\.so[^ ]*)'
 757         # I love bash!
 758         LC_ALL=C ldd "$_bin" 2>/dev/null | while read _line; do
 759             [[ $_line = 'not a dynamic executable' ]] && break
 760
 761             if [[ $_line =~ $_so_regex ]]; then
 762                 _file=${BASH_REMATCH[1]}
 763                 [[ -e ${initdir}/$_file ]] && continue
 764                 inst_library "$_file"
 765                 continue
 766             fi
 767
 768             if [[ $_line =~ not\ found ]]; then
 769                 dfatal "Missing a shared library required by $_bin."
 770                 dfatal "Run \"ldd $_bin\" to find out what it is."
 771                 dfatal "$_line"
 772                 dfatal "dracut cannot create an initrd."
 773                 exit 1
 774             fi
 775         done
 776         inst_simple "$_bin" "$_target"
 777     }
 778
 779     # same as above, except for shell scripts.
 780     # If your shell script does not start with shebang, it is not a shell script.
 781     inst_script() {
 782         local _bin
 783         _bin=$(find_binary "$1") || return 1
 784         shift
 785         local _line _shebang_regex
 786         read -r -n 80 _line <"$_bin"
 787         # If debug is set, clean unprintable chars to prevent messing up the term
 788         [[ $debug ]] && _line=$(echo -n "$_line" | tr -c -d '[:print:][:space:]')
 789         _shebang_regex='(#! *)(/[^ ]+).*'
 790         [[ $_line =~ $_shebang_regex ]] || return 1
 791         inst "${BASH_REMATCH[2]}" && inst_simple "$_bin" "$@"
 792     }
 793
 794     # general purpose installation function
 795     # Same args as above.
 796     inst() {
 797         local _x
 798
 799         case $# in
 800             1) ;;
 801             2) [[ ! $initdir && -d $2 ]] && export initdir=$2
 802                 [[ $initdir = $2 ]] && set $1;;
 803             3) [[ -z $initdir ]] && export initdir=$2
 804                 set $1 $3;;
 805             *) dfatal "inst only takes 1 or 2 or 3 arguments"
 806                 exit 1;;
 807         esac
 808         for _x in inst_symlink inst_script inst_binary inst_simple; do
 809             $_x "$@" && return 0
 810         done
 811         return 1
 812     }
 813
 814     # dracut_install [-o ] <file> [<file> ... ]
 815     # Install <file> to the initramfs image
 816     # -o optionally install the <file> and don't fail, if it is not there
 817     dracut_install() {
 818         local _optional=no
 819         if [[ $1 = '-o' ]]; then
 820             _optional=yes
 821             shift
 822         fi
 823         while (($# > 0)); do
 824             if ! inst "$1" ; then
 825                 if [[ $_optional = yes ]]; then
 826                     dinfo "Skipping program $1 as it cannot be found and is" \
 827                         "flagged to be optional"
 828                 else
 829                     dfatal "Failed to install $1"
 830                     exit 1
 831                 fi
 832             fi
 833             shift
 834         done
 835     }
 836
 837 fi
 838
 839 # find symlinks linked to given library file
 840 # $1 = library file
 841 # Function searches for symlinks by stripping version numbers appended to
 842 # library filename, checks if it points to the same target and finally
 843 # prints the list of symlinks to stdout.
 844 #
 845 # Example:
 846 # rev_lib_symlinks libfoo.so.8.1
 847 # output: libfoo.so.8 libfoo.so
 848 # (Only if libfoo.so.8 and libfoo.so exists on host system.)
 849 rev_lib_symlinks() {
 850     [[ ! $1 ]] && return 0
 851
 852     local fn="$1" orig="$(readlink -f "$1")" links=''
 853
 854     [[ ${fn} =~ .*\.so\..* ]] || return 1
 855
 856     until [[ ${fn##*.} == so ]]; do
 857         fn="${fn%.*}"
 858         [[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}"
 859     done
 860
 861     echo "${links}"
 862 }
 863
 864 # attempt to install any programs specified in a udev rule
 865 inst_rule_programs() {
 866     local _prog _bin
 867
 868     if grep -qE 'PROGRAM==?"[^ "]+' "$1"; then
 869         for _prog in $(grep -E 'PROGRAM==?"[^ "]+' "$1" | sed -r 's/.*PROGRAM==?"([^ "]+).*/\1/'); do
 870             _bin=""
 871             if [ -x ${udevdir}/$_prog ]; then
 872                 _bin=${udevdir}/$_prog
 873             elif [[ "${_prog/\$\{/}" != "$_prog" ]]; then
 874                 _bin=$(find_binary "$_prog") || {
 875                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 876                     continue;
 877                 }
 878             fi
 879
 880             [[ $_bin ]] && dracut_install "$_bin"
 881         done
 882     fi
 883     if grep -qE 'RUN[+=]=?"[^ "]+' "$1"; then
 884         for _prog in $(grep -E 'RUN[+=]=?"[^ "]+' "$1" | sed -r 's/.*RUN[+=]=?"([^ "]+).*/\1/'); do
 885             _bin=""
 886             if [ -x ${udevdir}/$_prog ]; then
 887                 _bin=${udevdir}/$_prog
 888             elif [[ "${_prog/\$\{/}" != "$_prog" ]]; then
 889                 _bin=$(find_binary "$_prog") || {
 890                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 891                     continue;
 892                 }
 893             fi
 894
 895             [[ $_bin ]] && dracut_install "$_bin"
 896         done
 897     fi
 898     if grep -qE 'IMPORT\{program\}==?"[^ "]+' "$1"; then
 899         for _prog in $(grep -E 'IMPORT\{program\}==?"[^ "]+' "$1" | sed -r 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/'); do
 900             _bin=""
 901             if [ -x ${udevdir}/$_prog ]; then
 902                 _bin=${udevdir}/$_prog
 903             elif [[ "${_prog/\$\{/}" != "$_prog" ]]; then
 904                 _bin=$(find_binary "$_prog") || {
 905                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 906                     continue;
 907                 }
 908             fi
 909
 910             [[ $_bin ]] && dracut_install "$_bin"
 911         done
 912     fi
 913 }
 914
 915 # attempt to install any programs specified in a udev rule
 916 inst_rule_group_owner() {
 917     local i
 918
 919     if grep -qE 'OWNER=?"[^ "]+' "$1"; then
 920         for i in $(grep -E 'OWNER=?"[^ "]+' "$1" | sed -r 's/.*OWNER=?"([^ "]+).*/\1/'); do
 921             if ! egrep -q "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
 922                 egrep "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
 923             fi
 924         done
 925     fi
 926     if grep -qE 'GROUP=?"[^ "]+' "$1"; then
 927         for i in $(grep -E 'GROUP=?"[^ "]+' "$1" | sed -r 's/.*GROUP=?"([^ "]+).*/\1/'); do
 928             if ! egrep -q "^$i:" "$initdir/etc/group" 2>/dev/null; then
 929                 egrep "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
 930             fi
 931         done
 932     fi
 933 }
 934
 935 # udev rules always get installed in the same place, so
 936 # create a function to install them to make life simpler.
 937 inst_rules() {
 938     local _target=/etc/udev/rules.d _rule _found
 939
 940     inst_dir "${udevdir}/rules.d"
 941     inst_dir "$_target"
 942     for _rule in "$@"; do
 943         if [ "${_rule#/}" = "$_rule" ]; then
 944             for r in ${udevdir}/rules.d /etc/udev/rules.d; do
 945                 if [[ -f $r/$_rule ]]; then
 946                     _found="$r/$_rule"
 947                     inst_rule_programs "$_found"
 948                     inst_rule_group_owner "$_found"
 949                     inst_simple "$_found"
 950                 fi
 951             done
 952         fi
 953         for r in '' ./ $dracutbasedir/rules.d/; do
 954             if [[ -f ${r}$_rule ]]; then
 955                 _found="${r}$_rule"
 956                 inst_rule_programs "$_found"
 957                 inst_rule_group_owner "$_found"
 958                 inst_simple "$_found" "$_target/${_found##*/}"
 959             fi
 960         done
 961         [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
 962     done
 963 }
 964
 965 # install function specialized for hooks
 966 # $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook
 967 # All hooks should be POSIX/SuS compliant, they will be sourced by init.
 968 inst_hook() {
 969     if ! [[ -f $3 ]]; then
 970         dfatal "Cannot install a hook ($3) that does not exist."
 971         dfatal "Aborting initrd creation."
 972         exit 1
 973     elif ! strstr "$hookdirs" "$1"; then
 974         dfatal "No such hook type $1. Aborting initrd creation."
 975         exit 1
 976     fi
 977     inst_simple "$3" "/lib/dracut/hooks/${1}/${2}-${3##*/}"
 978 }
 979
 980 # install any of listed files
 981 #
 982 # If first argument is '-d' and second some destination path, first accessible
 983 # source is installed into this path, otherwise it will installed in the same
 984 # path as source.  If none of listed files was installed, function return 1.
 985 # On first successful installation it returns with 0 status.
 986 #
 987 # Example:
 988 #
 989 # inst_any -d /bin/foo /bin/bar /bin/baz
 990 #
 991 # Lets assume that /bin/baz exists, so it will be installed as /bin/foo in
 992 # initramfs.
 993 inst_any() {
 994     local to f
 995
 996     [[ $1 = '-d' ]] && to="$2" && shift 2
 997
 998     for f in "$@"; do
 999         if [[ -e $f ]]; then
1000             [[ $to ]] && inst "$f" "$to" && return 0
1001             inst "$f" && return 0
1002         fi
1003     done
1004
1005     return 1
1006 }
1007
1008
1009 # inst_libdir_file [-n <pattern>] <file> [<file>...]
1010 # Install a <file> located on a lib directory to the initramfs image
1011 # -n <pattern> install matching files
1012 inst_libdir_file() {
1013     local _files
1014     if [[ "$1" == "-n" ]]; then
1015         local _pattern=$2
1016         shift 2
1017         for _dir in $libdirs; do
1018             for _i in "$@"; do
1019                 for _f in "$_dir"/$_i; do
1020                     [[ "$_f" =~ $_pattern ]] || continue
1021                     [[ -e "$_f" ]] && _files+="$_f "
1022                 done
1023             done
1024         done
1025     else
1026         for _dir in $libdirs; do
1027             for _i in "$@"; do
1028                 for _f in "$_dir"/$_i; do
1029                     [[ -e "$_f" ]] && _files+="$_f "
1030                 done
1031             done
1032         done
1033     fi
1034     [[ $_files ]] && dracut_install $_files
1035 }
1036
1037
1038 # install function decompressing the target and handling symlinks
1039 # $@ = list of compressed (gz or bz2) files or symlinks pointing to such files
1040 #
1041 # Function install targets in the same paths inside overlay but decompressed
1042 # and without extensions (.gz, .bz2).
1043 inst_decompress() {
1044     local _src _cmd
1045
1046     for _src in $@
1047     do
1048         case ${_src} in
1049             *.gz) _cmd='gzip -f -d' ;;
1050             *.bz2) _cmd='bzip2 -d' ;;
1051             *) return 1 ;;
1052         esac
1053         inst_simple ${_src}
1054         # Decompress with chosen tool.  We assume that tool changes name e.g.
1055         # from 'name.gz' to 'name'.
1056         ${_cmd} "${initdir}${_src}"
1057     done
1058 }
1059
1060 # It's similar to above, but if file is not compressed, performs standard
1061 # install.
1062 # $@ = list of files
1063 inst_opt_decompress() {
1064     local _src
1065
1066     for _src in $@
1067     do
1068         inst_decompress "${_src}" || inst "${_src}"
1069     done
1070 }
1071
1072 # module_check <dracut module>
1073 # execute the check() function of module-setup.sh of <dracut module>
1074 # or the "check" script, if module-setup.sh is not found
1075 # "check $hostonly" is called
1076 module_check() {
1077     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1078     local _ret
1079     local _forced=0
1080     local _hostonly=$hostonly
1081     [ $# -eq 2 ] && _forced=$2
1082     [[ -d $_moddir ]] || return 1
1083     if [[ ! -f $_moddir/module-setup.sh ]]; then
1084         # if we do not have a check script, we are unconditionally included
1085         [[ -x $_moddir/check ]] || return 0
1086         [ $_forced -ne 0 ] && unset hostonly
1087         $_moddir/check $hostonly
1088         _ret=$?
1089     else
1090         unset check depends install installkernel
1091         . $_moddir/module-setup.sh
1092         is_func check || return 0
1093         [ $_forced -ne 0 ] && unset hostonly
1094         check $hostonly
1095         _ret=$?
1096         unset check depends install installkernel
1097     fi
1098     hostonly=$_hostonly
1099     return $_ret
1100 }
1101
1102 # module_check_mount <dracut module>
1103 # execute the check() function of module-setup.sh of <dracut module>
1104 # or the "check" script, if module-setup.sh is not found
1105 # "mount_needs=1 check 0" is called
1106 module_check_mount() {
1107     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1108     local _ret
1109     mount_needs=1
1110     [[ -d $_moddir ]] || return 1
1111     if [[ ! -f $_moddir/module-setup.sh ]]; then
1112         # if we do not have a check script, we are unconditionally included
1113         [[ -x $_moddir/check ]] || return 0
1114         mount_needs=1 $_moddir/check 0
1115         _ret=$?
1116     else
1117         unset check depends install installkernel
1118         . $_moddir/module-setup.sh
1119         is_func check || return 1
1120         check 0
1121         _ret=$?
1122         unset check depends install installkernel
1123     fi
1124     unset mount_needs
1125     return $_ret
1126 }
1127
1128 # module_depends <dracut module>
1129 # execute the depends() function of module-setup.sh of <dracut module>
1130 # or the "depends" script, if module-setup.sh is not found
1131 module_depends() {
1132     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1133     local _ret
1134     [[ -d $_moddir ]] || return 1
1135     if [[ ! -f $_moddir/module-setup.sh ]]; then
1136         # if we do not have a check script, we have no deps
1137         [[ -x $_moddir/check ]] || return 0
1138         $_moddir/check -d
1139         return $?
1140     else
1141         unset check depends install installkernel
1142         . $_moddir/module-setup.sh
1143         is_func depends || return 0
1144         depends
1145         _ret=$?
1146         unset check depends install installkernel
1147         return $_ret
1148     fi
1149 }
1150
1151 # module_install <dracut module>
1152 # execute the install() function of module-setup.sh of <dracut module>
1153 # or the "install" script, if module-setup.sh is not found
1154 module_install() {
1155     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1156     local _ret
1157     [[ -d $_moddir ]] || return 1
1158     if [[ ! -f $_moddir/module-setup.sh ]]; then
1159         [[ -x $_moddir/install ]] && . "$_moddir/install"
1160         return $?
1161     else
1162         unset check depends install installkernel
1163         . $_moddir/module-setup.sh
1164         is_func install || return 0
1165         install
1166         _ret=$?
1167         unset check depends install installkernel
1168         return $_ret
1169     fi
1170 }
1171
1172 # module_installkernel <dracut module>
1173 # execute the installkernel() function of module-setup.sh of <dracut module>
1174 # or the "installkernel" script, if module-setup.sh is not found
1175 module_installkernel() {
1176     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1177     local _ret
1178     [[ -d $_moddir ]] || return 1
1179     if [[ ! -f $_moddir/module-setup.sh ]]; then
1180         [[ -x $_moddir/installkernel ]] && . "$_moddir/installkernel"
1181         return $?
1182     else
1183         unset check depends install installkernel
1184         . $_moddir/module-setup.sh
1185         is_func installkernel || return 0
1186         installkernel
1187         _ret=$?
1188         unset check depends install installkernel
1189         return $_ret
1190     fi
1191 }
1192
1193 # check_mount <dracut module>
1194 # check_mount checks, if a dracut module is needed for the given
1195 # device and filesystem types in "${host_fs_types[@]}"
1196 check_mount() {
1197     local _mod=$1
1198     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1199     local _ret
1200     local _moddep
1201
1202     [ "${#host_fs_types[*]}" -le 0 ] && return 1
1203
1204     # If we are already scheduled to be loaded, no need to check again.
1205     strstr " $mods_to_load " " $_mod " && return 0
1206     strstr " $mods_checked_as_dep " " $_mod " && return 1
1207
1208     # This should never happen, but...
1209     [[ -d $_moddir ]] || return 1
1210
1211     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1212
1213     if strstr " $omit_dracutmodules " " $_mod "; then
1214         dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!"
1215         return 1
1216     fi
1217
1218     if strstr " $dracutmodules $add_dracutmodules $force_add_dracutmodules" " $_mod "; then
1219         module_check_mount $_mod; ret=$?
1220
1221         # explicit module, so also accept ret=255
1222         [[ $ret = 0 || $ret = 255 ]] || return 1
1223     else
1224         # module not in our list
1225         if [[ $dracutmodules = all ]]; then
1226             # check, if we can and should install this module
1227             module_check_mount $_mod || return 1
1228         else
1229             # skip this module
1230             return 1
1231         fi
1232     fi
1233
1234
1235     for _moddep in $(module_depends $_mod); do
1236         # handle deps as if they were manually added
1237         strstr " $add_dracutmodules " " $_moddep " || \
1238             add_dracutmodules+=" $_moddep "
1239         strstr " $force_add_dracutmodules " " $_moddep " || \
1240             force_add_dracutmodules+=" $_moddep "
1241         # if a module we depend on fail, fail also
1242         if ! check_module $_moddep; then
1243             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1244             return 1
1245         fi
1246     done
1247
1248     strstr " $mods_to_load " " $_mod " || \
1249         mods_to_load+=" $_mod "
1250
1251     return 0
1252 }
1253
1254 # check_module <dracut module> [<use_as_dep>]
1255 # check if a dracut module is to be used in the initramfs process
1256 # if <use_as_dep> is set, then the process also keeps track
1257 # that the modules were checked for the dependency tracking process
1258 check_module() {
1259     local _mod=$1
1260     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1261     local _ret
1262     local _moddep
1263     # If we are already scheduled to be loaded, no need to check again.
1264     strstr " $mods_to_load " " $_mod " && return 0
1265     strstr " $mods_checked_as_dep " " $_mod " && return 1
1266
1267     # This should never happen, but...
1268     [[ -d $_moddir ]] || return 1
1269
1270     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1271
1272     if strstr " $omit_dracutmodules " " $_mod "; then
1273         dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!"
1274         return 1
1275     fi
1276
1277     if strstr " $dracutmodules $add_dracutmodules $force_add_dracutmodules" " $_mod "; then
1278         if strstr " $force_add_dracutmodules" " $_mod"; then
1279             module_check $_mod 1; ret=$?
1280         else
1281             module_check $_mod 0; ret=$?
1282         fi
1283         # explicit module, so also accept ret=255
1284         [[ $ret = 0 || $ret = 255 ]] || return 1
1285     else
1286         # module not in our list
1287         if [[ $dracutmodules = all ]]; then
1288             # check, if we can and should install this module
1289             module_check $_mod || return 1
1290         else
1291             # skip this module
1292             return 1
1293         fi
1294     fi
1295
1296     for _moddep in $(module_depends $_mod); do
1297         # handle deps as if they were manually added
1298         strstr " $add_dracutmodules " " $_moddep " || \
1299             add_dracutmodules+=" $_moddep "
1300         strstr " $force_add_dracutmodules " " $_moddep " || \
1301             force_add_dracutmodules+=" $_moddep "
1302         # if a module we depend on fail, fail also
1303         if ! check_module $_moddep; then
1304             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1305             return 1
1306         fi
1307     done
1308
1309     strstr " $mods_to_load " " $_mod " || \
1310         mods_to_load+=" $_mod "
1311
1312     return 0
1313 }
1314
1315 # for_each_module_dir <func>
1316 # execute "<func> <dracut module> 1"
1317 for_each_module_dir() {
1318     local _modcheck
1319     local _mod
1320     local _moddir
1321     local _func
1322     _func=$1
1323     for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
1324         _mod=${_moddir##*/}; _mod=${_mod#[0-9][0-9]}
1325         $_func $_mod 1
1326     done
1327
1328     # Report any missing dracut modules, the user has specified
1329     _modcheck="$add_dracutmodules $force_add_dracutmodules"
1330     [[ $dracutmodules != all ]] && _modcheck="$m $dracutmodules"
1331     for _mod in $_modcheck; do
1332         strstr "$mods_to_load" "$_mod" && continue
1333         strstr "$omit_dracutmodules" "$_mod" && continue
1334         derror "dracut module '$_mod' cannot be found or installed."
1335     done
1336 }
1337
1338 # Install a single kernel module along with any firmware it may require.
1339 # $1 = full path to kernel module to install
1340 install_kmod_with_fw() {
1341     # no need to go further if the module is already installed
1342
1343     [[ -e "${initdir}/lib/modules/$kernel/${1##*/lib/modules/$kernel/}" ]] \
1344         && return 0
1345
1346     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -e "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}" ]]; then
1347         read ret < "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1348         return $ret
1349     fi
1350
1351     if [[ $omit_drivers ]]; then
1352         local _kmod=${1##*/}
1353         _kmod=${_kmod%.ko}
1354         _kmod=${_kmod/-/_}
1355         if [[ "$_kmod" =~ $omit_drivers ]]; then
1356             dinfo "Omitting driver $_kmod"
1357             return 0
1358         fi
1359         if [[ "${1##*/lib/modules/$kernel/}" =~ $omit_drivers ]]; then
1360             dinfo "Omitting driver $_kmod"
1361             return 0
1362         fi
1363     fi
1364
1365     inst_simple "$1" "/lib/modules/$kernel/${1##*/lib/modules/$kernel/}"
1366     ret=$?
1367     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1368         [[ -d "$DRACUT_KERNEL_LAZY_HASHDIR" ]] && \
1369         echo $ret > "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1370     (($ret != 0)) && return $ret
1371
1372     local _modname=${1##*/} _fwdir _found _fw
1373     _modname=${_modname%.ko*}
1374     for _fw in $(modinfo -k $kernel -F firmware $1 2>/dev/null); do
1375         _found=''
1376         for _fwdir in $fw_dir; do
1377             if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1378                 inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1379                 _found=yes
1380             fi
1381         done
1382         if [[ $_found != yes ]]; then
1383             if ! [[ -d $(echo /sys/module/${_modname//-/_}|{ read a b; echo $a; }) ]]; then
1384                 dinfo "Possible missing firmware \"${_fw}\" for kernel module" \
1385                     "\"${_modname}.ko\""
1386             else
1387                 dwarn "Possible missing firmware \"${_fw}\" for kernel module" \
1388                     "\"${_modname}.ko\""
1389             fi
1390         fi
1391     done
1392     return 0
1393 }
1394
1395 # Do something with all the dependencies of a kernel module.
1396 # Note that kernel modules depend on themselves using the technique we use
1397 # $1 = function to call for each dependency we find
1398 #      It will be passed the full path to the found kernel module
1399 # $2 = module to get dependencies for
1400 # rest of args = arguments to modprobe
1401 # _fderr specifies FD passed from surrounding scope
1402 for_each_kmod_dep() {
1403     local _func=$1 _kmod=$2 _cmd _modpath _options
1404     shift 2
1405     modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} | (
1406         while read _cmd _modpath _options; do
1407             [[ $_cmd = insmod ]] || continue
1408             $_func ${_modpath} || exit $?
1409         done
1410     )
1411 }
1412
1413 dracut_kernel_post() {
1414     local _moddirname=${srcmods%%/lib/modules/*}
1415
1416     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" ]]; then
1417         xargs -r modprobe -a ${_moddirname+-d ${_moddirname}/} \
1418             --ignore-install --show-depends --set-version $kernel \
1419             < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" 2>/dev/null \
1420             | sort -u \
1421             | while read _cmd _modpath _options; do
1422             [[ $_cmd = insmod ]] || continue
1423             echo "$_modpath"
1424         done > "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1425
1426         (
1427             if [[ $DRACUT_INSTALL ]] && [[ -z $_moddirname ]]; then
1428                 xargs -r $DRACUT_INSTALL ${initdir+-D "$initdir"} -a < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1429             else
1430                 while read _modpath; do
1431                     local _destpath=$_modpath
1432                     [[ $_moddirname ]] && _destpath=${_destpath##$_moddirname/}
1433                     _destpath=${_destpath##*/lib/modules/$kernel/}
1434                     inst_simple "$_modpath" "/lib/modules/$kernel/${_destpath}" || exit $?
1435                 done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1436             fi
1437         ) &
1438
1439         if [[ $DRACUT_INSTALL ]]; then
1440             xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep" \
1441                 | while read line; do
1442                 for _fwdir in $fw_dir; do
1443                     echo $_fwdir/$line;
1444                 done;
1445             done | xargs -r $DRACUT_INSTALL ${initdir+-D "$initdir"} -a -o
1446         else
1447             for _fw in $(xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"); do
1448                 for _fwdir in $fw_dir; do
1449                     if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1450                         inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1451                         break
1452                     fi
1453                 done
1454             done
1455         fi
1456
1457         wait
1458     fi
1459
1460     for _f in modules.builtin.bin modules.builtin; do
1461         [[ $srcmods/$_f ]] && break
1462     done || {
1463         dfatal "No modules.builtin.bin and modules.builtin found!"
1464         return 1
1465     }
1466
1467     for _f in modules.builtin.bin modules.builtin modules.order; do
1468         [[ $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f"
1469     done
1470
1471     # generate module dependencies for the initrd
1472     if [[ -d $initdir/lib/modules/$kernel ]] && \
1473         ! depmod -a -b "$initdir" $kernel; then
1474         dfatal "\"depmod -a $kernel\" failed."
1475         exit 1
1476     fi
1477
1478     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && rm -fr "$DRACUT_KERNEL_LAZY_HASHDIR"
1479 }
1480
1481 module_is_host_only() (
1482     local _mod=$1
1483     _mod=${_mod##*/}
1484     _mod=${_mod%.ko}
1485
1486     [[ "$add_drivers" =~ " ${_mod} " ]] && return 0
1487
1488     # check if module is loaded
1489     [[ -d $(echo /sys/module/${_mod//-/_}|{ read a b; echo $a; }) ]] && return 0
1490
1491     # check if module is loadable on the current kernel
1492     # this covers the case, where a new module is introduced
1493     # or a module was renamed
1494     # or a module changed from builtin to a module
1495     modinfo -F filename "$_mod" &>/dev/null || return 0
1496
1497     return 1
1498 )
1499
1500 find_kernel_modules_by_path () (
1501     local _OLDIFS
1502
1503     [[ -f $srcmods/modules.dep ]] || return 0
1504
1505     _OLDIFS=$IFS
1506     IFS=:
1507     while read a rest; do
1508         [[ $a = */$1/* ]] || continue
1509         echo $srcmods/$a
1510     done < $srcmods/modules.dep
1511     IFS=$_OLDIFS
1512     return 0
1513 )
1514
1515 find_kernel_modules () {
1516     find_kernel_modules_by_path  drivers
1517 }
1518
1519 # instmods [-c [-s]] <kernel module> [<kernel module> ... ]
1520 # instmods [-c [-s]] <kernel subsystem>
1521 # install kernel modules along with all their dependencies.
1522 # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage"
1523 instmods() {
1524     [[ $no_kernel = yes ]] && return
1525     # called [sub]functions inherit _fderr
1526     local _fderr=9
1527     local _check=no
1528     local _silent=no
1529     if [[ $1 = '-c' ]]; then
1530         _check=yes
1531         shift
1532     fi
1533
1534     if [[ $1 = '-s' ]]; then
1535         _silent=yes
1536         shift
1537     fi
1538
1539     function inst1mod() {
1540         local _ret=0 _mod="$1"
1541         case $_mod in
1542             =*)
1543                 ( [[ "$_mpargs" ]] && echo $_mpargs
1544                     find_kernel_modules_by_path "${_mod#=}" ) \
1545                         | instmods
1546                 ((_ret+=$?))
1547                 ;;
1548             --*) _mpargs+=" $_mod" ;;
1549             *)
1550                 _mod=${_mod##*/}
1551                 # if we are already installed, skip this module and go on
1552                 # to the next one.
1553                 if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1554                     [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko" ]]; then
1555                     read _ret <"$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko"
1556                     return $_ret
1557                 fi
1558
1559                 if [[ $omit_drivers ]] && [[ "$1" =~ $omit_drivers ]]; then
1560                     dinfo "Omitting driver ${_mod##$srcmods}"
1561                     return 0
1562                 fi
1563
1564                 # If we are building a host-specific initramfs and this
1565                 # module is not already loaded, move on to the next one.
1566                 [[ $hostonly ]] \
1567                     && ! module_is_host_only "$_mod" \
1568                     && return 0
1569
1570                 if [[ "$_check" = "yes" ]] || ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
1571                     # We use '-d' option in modprobe only if modules prefix path
1572                     # differs from default '/'.  This allows us to use dracut with
1573                     # old version of modprobe which doesn't have '-d' option.
1574                     local _moddirname=${srcmods%%/lib/modules/*}
1575                     [[ -n ${_moddirname} ]] && _moddirname="-d ${_moddirname}/"
1576
1577                     # ok, load the module, all its dependencies, and any firmware
1578                     # it may require
1579                     for_each_kmod_dep install_kmod_with_fw $_mod \
1580                         --set-version $kernel ${_moddirname} $_mpargs
1581                     ((_ret+=$?))
1582                 else
1583                     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1584                         echo $_mod >> "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist"
1585                 fi
1586                 ;;
1587         esac
1588         return $_ret
1589     }
1590
1591     function instmods_1() {
1592         local _mod _mpargs
1593         if (($# == 0)); then  # filenames from stdin
1594             while read _mod; do
1595                 inst1mod "${_mod%.ko*}" || {
1596                     if [[ "$_check" == "yes" ]]; then
1597                         [[ "$_silent" == "no" ]] && dfatal "Failed to install $_mod"
1598                         return 1
1599                     fi
1600                 }
1601             done
1602         fi
1603         while (($# > 0)); do  # filenames as arguments
1604             inst1mod ${1%.ko*} || {
1605                 if [[ "$_check" == "yes" ]]; then
1606                     [[ "$_silent" == "no" ]] && dfatal "Failed to install $1"
1607                     return 1
1608                 fi
1609             }
1610             shift
1611         done
1612         return 0
1613     }
1614
1615     local _ret _filter_not_found='FATAL: Module .* not found.'
1616     # Capture all stderr from modprobe to _fderr. We could use {var}>...
1617     # redirections, but that would make dracut require bash4 at least.
1618     eval "( instmods_1 \"\$@\" ) ${_fderr}>&1" \
1619     | while read line; do [[ "$line" =~ $_filter_not_found ]] || echo $line;done | derror
1620     _ret=$?
1621     return $_ret
1622 }