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Add some functions used by the initramfs generator from Fedora's mkinitrd with bits and pieces stripped out. This needs a closer look to ensure that we're not bringing along any other old baggagemaster
Jeremy Katz
16 years ago
1 changed files with 291 additions and 0 deletions
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#!/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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# |
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# |
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IF_RTLD="" |
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IF_dynamic="" |
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function get_dso_deps() { |
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local bin="$1" ; shift |
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declare -a FILES |
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declare -a NAMES |
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local LDSO=$(echo nash-showelfinterp $bin | /sbin/nash --forcequiet) |
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[ -z "$LDSO" -o "$LDSO" == "$bin" ] && local LDSO="$IF_RTLD" |
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[ -z "$LDSO" -o "$LDSO" == "$bin" ] && return 1 |
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[ -z "$IF_RTLD" ] && IF_RTLD="$LDSO" |
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# I hate shell. |
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declare -i n=0 |
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while read NAME I0 FILE ADDR I1 ; do |
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[ "$FILE" == "not" ] && FILE="$FILE $ADDR" |
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[ "$NAME" == "not" ] && NAME="$NAME $I0" |
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NAMES[$n]="$NAME" |
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FILES[$n]="$FILE" |
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let n++ |
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done << EOF |
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$(LD_TRACE_PRELINKING=1 LD_WARN= LD_TRACE_LOADED_OBJECTS=1 \ |
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$LDSO $bin 2>/dev/null) |
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EOF |
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[ ${#FILES[*]} -eq 0 ] && return 1 |
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# we don't want the name of the binary in the list |
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if [ "${FILES[0]}" == "$bin" ]; then |
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FILES[0]="" |
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NAMES[0]="" |
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[ ${#FILES[*]} -eq 1 ] && return 1 |
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fi |
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declare -i n=0 |
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while [ $n -lt ${#FILES[*]} ]; do |
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local FILE="${FILES[$n]}" |
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local NAME="${NAMES[$n]}" |
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if [ "$FILE" == "not found" -o "$NAME" == "not found" ]; then |
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cat 1>&2 <<EOF |
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There are missing files on your system. The dynamic object $bin |
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requires ${NAMES[$n]} n order to properly function. mkinitrd cannot continue. |
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EOF |
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return 1 |
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fi |
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case "$FILE" in |
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/lib*) |
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TLIBDIR=`echo "$FILE" | sed 's,\(/lib[^/]*\)/.*$,\1,'` |
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BASE=`basename "$FILE"` |
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# Prefer nosegneg libs over direct segment accesses on i686. |
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if [ -f "$TLIBDIR/i686/nosegneg/$BASE" ]; then |
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FILE="$TLIBDIR/i686/nosegneg/$BASE" |
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# Otherwise, prefer base libraries rather than their optimized |
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# variants. |
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elif [ -f "$TLIBDIR/$BASE" ]; then |
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FILE="$TLIBDIR/$BASE" |
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fi |
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FILES[$n]="$FILE" |
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;; |
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esac |
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IF_dynamic="yes" |
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let n++ |
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done |
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echo "${FILES[@]}" |
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} |
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function inst() { |
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if [ "$#" != "2" -a "$#" != "3" ];then |
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echo "usage: inst <file> <root> [<destination file>]" |
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return 1 |
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fi |
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local file="$1" ; shift |
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local root="${1%%/}/" ; shift |
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local dest="${1##/}" |
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[ -z "$dest" ] && local dest="${file##/}" |
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mkdir -p "$root/$(dirname $dest)" |
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local RET=0 |
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local target="" |
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[ -L "$file" ] && target=$(readlink "$file") |
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if [ -n "$target" -a "$dest" != "$target" ]; then |
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if [ -e "$root$dest" ]; then |
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RET=0 |
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else |
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ln -sf "$target" "$root$dest" |
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#inst "$target" "$root" |
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local BASE=`basename "$target"` |
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local LIBDIR=`echo "$file" | sed -e 's,\(\(.*\)/\)[^/]\+$,\1,'` |
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if [ "$LIBDIR" = "$BASE" ]; then |
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local LIBDIR=`echo "/$dest" | sed -e 's,\(\(.*\)/\)[^/]\+$,\1,'` |
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fi |
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local TLIBDIR=`echo "$target" | sed -e 's,\(^/lib[^/]*\)/.*$,\1/,' \ |
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-e 's,\(\(.*\)/\)[^/]\+$,\1,'` |
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if [ "$TLIBDIR" = "$BASE" ]; then |
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local TLIBDIR=`echo "/$dest" | sed \ |
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-e 's,\(^/lib[^/]*\)/.*$,\1/,' \ |
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-e 's,\(\(.*\)/\)[^/]\+$,\1,'` |
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fi |
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inst "$LIBDIR/$BASE" "$root" "$TLIBDIR/$BASE" |
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RET=$? |
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return $RET |
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fi |
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fi |
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local SHEBANG=$(dd if="$file" bs=2 count=1 2>/dev/null) |
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if [ "$SHEBANG" == '#!' ]; then |
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# We're intentionally not playing the "what did this moron run |
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# in his shell script" game. There's nothing but pain in that. |
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local interp=$(head -1 "$file" | sed 's/^#! *//') |
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inst "$interp" "$root" |
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RET=$? |
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return $RET |
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fi |
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if [ -e "$root$dest" ]; then |
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RET=0 |
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else |
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if [ -n "$target" -a -L "$target" ]; then |
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inst "$target" "$root" |
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RET=$? |
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else |
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cp -aL "$file" "$root$dest" |
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local DEPS=$(get_dso_deps "$file") |
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if [ -n "$DEPS" ]; then |
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IF_dynamic="yes" |
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fi |
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for x in $DEPS ; do |
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local TLIBDIR=`echo "$x" | sed 's,\(/lib[^/]*\)/.*$,\1,'` |
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local BASE=`basename "$x"` |
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inst "$x" "$root" "$TLIBDIR/$BASE" |
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done |
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RET=$? |
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fi |
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fi |
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return $RET |
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} |
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# module dep finding and installation functions |
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moduledep() { |
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MPARGS="" |
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if [ "$1" == "--ignore-install" ]; then |
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MPARGS="$MPARGS --ignore-install" |
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shift |
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fi |
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vecho -n "Looking for deps of module $1" |
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deps="" |
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deps=$(modprobe $MPARGS --set-version $kernel --show-depends $1 2>/dev/null| awk '/^insmod / { print gensub(".*/","","g",$2) }' | while read foo ; do [ "${foo%%.ko}" != "$1" ] && echo -n "${foo%%.ko} " ; done) |
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[ -n "$deps" ] && vecho ": $deps" || vecho |
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} |
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locatemodule() { |
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MPARGS="" |
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if [ "$1" == "--ignore-install" ]; then |
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MPARGS="$MPARGS --ignore-install" |
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shift |
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fi |
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fmPath=$(modprobe $MPARGS --set-version $kernel --show-depends $1 2>/dev/null | awk '/^insmod / { print $2; }' | tail -1) |
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if [ -n "$fmPath" -a -f "$fmPath" ]; then |
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return 0 |
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fi |
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for modExt in o.gz o ko ; do |
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for modDir in /lib/modules/$kernel/updates /lib/modules/$kernel ; do |
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if [ -d $modDir ]; then |
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fmPath=$(find $modDir -name $1.ko |awk {'print $1; exit;'}) |
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if [ -n "$fmPath" -a -f "$fmPath" ]; then |
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return 0 |
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fi |
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fi |
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done |
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done |
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return 1 |
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} |
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resolveAndExpandModules() { |
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items=$* |
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mods=$(expandModules $items) |
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echo "looking for $mods" |
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resdeps $mods |
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echo $resolved |
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} |
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expandModules() { |
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items=$* |
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for m in $items ; do |
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char=$(echo $m | cut -c1) |
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if [ $char = '=' ]; then |
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NAME=$(echo $m | cut -c2-) |
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if [ "$NAME" = "ata" ]; then |
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MODS="$MODS $(cat /lib/modules/$kernel/modules.block |egrep '(ata|ahci)' |sed -e 's/.ko//')" |
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else |
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# Ignore if group list does not exist |
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if [ -e /lib/modules/$kernel/modules.$NAME ]; then |
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MODS="$MODS $(cat /lib/modules/$kernel/modules.$NAME |sed -e 's/.ko//')" |
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fi |
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fi |
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else |
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MODS="$MODS $m" |
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fi |
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done |
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echo $MODS |
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} |
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installmodule() |
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{ |
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MPARGS="" |
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if [ "$1" == "--ignore-install" ]; then |
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MPARGS="$MPARGS --ignore-install" |
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shift |
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fi |
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MODULE=$1 |
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MNTIMAGE=$2 |
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fmPath="" |
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locatemodule $MPARGS $MODULE |
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MODULE=$fmPath |
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if [ -z "$MODULE" ]; then |
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return |
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fi |
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if [ -x /usr/bin/strip ]; then |
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/usr/bin/strip -g $MODULE -o $MNTIMAGE/lib/modules/$kernel/$(basename $MODULE) |
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else |
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inst "$MODULE" "$MNTIMAGE" "/lib/modules/$kernel/$(basename $MODULE)" |
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fi |
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for fw in $(/sbin/modinfo -F firmware $MODULE 2>/dev/null); do |
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if [ -f /lib/firmware/$fw ]; then |
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inst "/lib/firmware/$fw" "$MNTIMAGE" "/lib/firmware/$fw" |
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fi |
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done |
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} |
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# This loops to make sure it resolves dependencies of dependencies of... |
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resdeps () { |
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modlist="$1" |
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before=1 |
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after=2 |
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items=$(eval echo \${$modlist}) |
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while [ $before != $after ]; do |
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before=$(echo $items | wc -c) |
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list="" |
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for i in $items ; do |
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deps="" |
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moduledep $i |
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list="$list $deps" |
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done |
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items=$(for n in $items $list; do echo $n; done | sort -u) |
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after=`echo $items | wc -c` |
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done |
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resolved="$items" |
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} |
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# vim:ts=8:sw=4:sts=4:et |
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