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233 lines
6.9 KiB
233 lines
6.9 KiB
#!/bin/bash |
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# |
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# functions used by mkinitrd and other tools. |
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# |
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# Copyright 2005-2008 Red Hat, Inc. All rights reserved. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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# |
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# Authors: |
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# Peter Jones <pjones@redhat.com> |
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# Jeremy Katz <katzj@redhat.com> |
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# Jakub Jelinek <jakub@redhat.com> |
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IF_RTLD="" |
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IF_dynamic="" |
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# Generic substring function. If $2 is in $1, return 0. |
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strstr() { [[ ! ${1#*$2*} = $1 ]]; } |
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# $1 = file to copy to ramdisk |
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# $2 (optional) Name for the file on the ramdisk |
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# Location of the image dir is assumed to be $initdir |
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# We never overwrite the target if it exists. |
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inst_simple() { |
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local src target |
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[[ -f $1 ]] || return 1 |
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src=$1 target="${initdir}${2:-$1}" |
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[[ -f $target ]] && return 0 |
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mkdir -p "${target%/*}" |
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echo "Installing $src" >&2 |
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cp -fL "$src" "$target" |
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} |
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# Same as above, but specialzed to handle dynamic libraries. |
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# It handles making symlinks according to how the original library |
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# is referenced. |
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inst_library() { |
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local src=$1 dest=${2:-$1} |
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[[ -f $initdir$dest ]] && return 0 |
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if [[ -L $src ]]; then |
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reallib="$(readlink -f "$src")" |
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lib=${src##*/} |
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inst_simple "$reallib" "$reallib" |
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mkdir -p ${initdir}${dest%/*} |
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(cd "${initdir}${dest%/*}" && ln -s "$reallib" "$lib") |
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else |
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inst_simple "$src" "$dest" |
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fi |
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} |
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# find a binary. If we were not passed the full path directly, |
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# search in the usual places to find the binary. |
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find_binary() { |
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local binpath="/bin /sbin /usr/bin /usr/sbin" p |
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[[ -x $1 ]] && { echo $1; return 0; } |
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for p in $binpath; do |
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[[ -x $p/$1 ]] && { echo "$p/$1"; return 0; } |
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done |
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return 1 |
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} |
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# Same as above, but specialized to install binary executables. |
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# Install binary executable, and all shared library dependencies, if any. |
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inst_binary() { |
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local bin target |
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bin=$(find_binary "$1") || return 1 |
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target=${2:-$bin} |
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local LDSO NAME IO FILE ADDR I1 n f TLIBDIR |
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[[ -f $initdir$target ]] && return 0 |
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# I love bash! |
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ldd $bin 2>/dev/null | while read line; do |
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[[ $line = 'not a dynamic executable' ]] && return 1 |
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[[ $line =~ not\ found ]] &&{ |
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echo "Missing a shared library required by $bin." >&2 |
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echo "Run \"ldd $bin\" to find out what it is." >&2 |
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echo "dracut cannot create an initrd." >&2 |
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exit 1 |
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} |
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[[ $line =~ ([^ ]*/lib[^/]*/[^ ]*\.so[^ ]*) ]] || continue |
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FILE=${BASH_REMATCH[1]} |
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[[ -f ${initdir}$FILE ]] && continue |
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# see if we are loading an optimized version of a shared lib. |
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[[ $FILE =~ ^(/lib[^/]*).* ]] && { |
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TLIBDIR=${BASH_REMATCH[1]} |
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BASE="${FILE##*/}" |
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# prefer nosegneg libs, then unoptimized ones. |
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for f in "$TLIBDIR/i686/nosegneg" "$TLIBDIR"; do |
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[[ -f $f/$BASE ]] || continue |
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FILE="$f/$BASE" |
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break |
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done |
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inst_library "$FILE" "$TLIBDIR/$BASE" |
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IF_dynamic="yes" |
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continue |
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} |
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inst_library "$FILE" |
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done |
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inst_simple "$bin" "$target" |
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} |
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# same as above, except for shell scripts. |
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# If your shell script does not start with shebang, it is not a shell script. |
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inst_script() { |
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[[ -f $1 ]] || return 1 |
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local line |
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read -r -n 80 line <"$1" |
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[[ $line =~ (#! *)(/[^ ]+).* ]] || return 1 |
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inst "${BASH_REMATCH[2]}" && inst_simple "$@" |
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} |
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# same as above, but specialized for symlinks |
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inst_symlink() { |
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local src=$1 target=$initdir${2:-$1} realsrc |
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[[ -L $1 ]] || return 1 |
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[[ -L $target ]] && return 0 |
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realsrc=$(readlink -f "$src") |
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[[ $realsrc = ${realsrc##*/} ]] && realsrc="${src%/*}/$realsrc" |
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inst "$realsrc" && ln -s "$realsrc" "$target" |
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} |
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# find a rule in the usual places. |
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find_rule() { |
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for r in . /lib/udev/rules.d /etc/udev/rules.d $dsrc/rules.d; do |
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[[ -f $r/$1 ]] && { echo "$r/$1"; return 0; } |
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done |
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return 1 |
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} |
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# udev rules always get installed in the same place, so |
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# create a function to install them to make life simpler. |
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inst_rules() { |
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local target="/etc/udev/rules.d" |
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mkdir -p "$initdir/lib/udev/rules.d" "$initdir$target" |
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for rule in "$@"; do |
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rule=$(find_rule $rule) && \ |
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inst_simple "$rule" "$target/${rule##*/}" |
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done |
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} |
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# general purpose installation function |
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# Same args as above. |
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inst() { |
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if (($# != 1 && $# != 2 )); then |
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echo "dracut error: inst only takes 1 or 2 arguments" |
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exit 1 |
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fi |
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for x in inst_symlink inst_script inst_binary inst_simple; do |
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$x "$@" && return 0 |
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done |
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return 1 |
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} |
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# install function specialized for hooks |
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# $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook |
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# All hooks should be POSIX/SuS compliant, they will be sourced by init. |
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inst_hook() { |
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[[ -f $3 ]] || { |
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echo "Cannot install a hook ($3) that does not exist." >&2 |
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echo "Aborting initrd creation." >&2 |
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exit 1 |
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} |
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strstr "$hookdirs" "$1" || { |
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echo "No such hook type $1. Aborting initrd creation." >&2 |
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exit 1 |
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} |
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inst_simple "$3" "/${1}/${2}${3##*/}" |
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} |
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dracut_install() { |
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while (($# > 0)); do |
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if inst "$1" ; then |
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shift |
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continue |
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fi |
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echo "Failed to install $1" >&2 ; exit 1 |
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done |
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} |
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# install modules, and handle installing all their dependencies as well. |
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srcmods="/lib/modules/$kernel/" |
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instmods() { |
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local mod mpargs modpath modname cmd |
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while (($# > 0)); do |
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mod=${1%.ko} |
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case $mod in |
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=*) # This introduces 2 incompatible meanings for =* arguments |
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# to instmods. We need to decide which one to keep. |
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if [ "$mod" = "=ata" -a -f $srcmods/modules.block ] ; then |
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instmods $mpargs $(egrep 'ata|ahci' "${srcmods}/modules.block") |
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elif [ -f $srcmods/modules.${mod#=} ]; then |
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instmods $mpargs $(cat ${srcmods}/modules.${mod#=} ) |
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else |
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instmods $mpargs $(find "$srcmods" -path "*/${mod#=}/*") |
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fi |
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;; |
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--*) mpargs+=" $mod";; |
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*) mod=${mod##*/} |
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[[ -f $initdir/$1 ]] && { shift; continue; } |
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modprobe $mpargs --ignore-install --set-version $kernel \ |
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--show-depends $mod 2>/dev/null | \ |
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while read cmd modpath options; do |
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[[ $cmd = insmod ]] || continue |
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modname=${modpath##*/} |
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modname=${modname%.ko} |
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[[ ${mod/-/_} != ${modname/-/_} ]] && { |
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instmods $mpargs $modname |
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continue |
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} |
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inst_simple "$modpath" |
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done |
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;; |
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esac |
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shift |
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done |
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for fw in $(/sbin/modinfo -F firmware $mod 2>/dev/null); do |
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if [ -f /lib/firmware/$fw ]; then |
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inst_simple "/lib/firmware/$fw" |
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fi |
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done |
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} |
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# vim:ts=8:sw=4:sts=4:et
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