dracut - pub/scm/boot/dracut/dracut - Git at Google

 #!/bin/bash
 #
 # Generator script for a dracut initramfs
 # Tries to retain some degree of compatibility with the command line
 # of the various mkinitrd implementations out there
 #

 # Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #


 usage() {
 #                                                       80x25 linebreak here ^
 	echo "Usage: $0 [OPTION]... <initramfs> <kernel-version>
 Creates initial ramdisk images for preloading modules

   -f, --force           Overwrite existing initramfs file.
   -m, --modules [LIST]  Specify a space-separated list of dracut modules to
                          call when building the initramfs. Modules are located
                          in /usr/share/dracut/modules.d.
   -o, --omit [LIST]     Omit a space-separated list of dracut modules.
   -a, --add [LIST]      Add a space-separated list of dracut modules.
   -d, --drivers [LIST]  Specify a space-separated list of kernel modules to
                          include in the initramfs.
   -k, --kmoddir [DIR]   Specify the directory, where to look for kernel
                         modules
   --fwdir [DIR]         Specify additional directories, where to look for
                         firmwares, separated by :
   --kernel-only         Only install kernel drivers and firmware files
   --no-kernel           Do not install kernel drivers and firmware files
   --strip               Strip binaries in the initramfs (default)
   --nostrip             Do not strip binaries in the initramfs
   -h, --help            This message
   --debug               Output debug information of the build process
   -v, --verbose         Verbose output during the build process
   -c, --conf [FILE]     Specify configuration file to use.
                          Default: /etc/dracut.conf
   -l, --local           Local mode. Use modules from the current working
                          directory instead of the system-wide installed in
                          /usr/share/dracut/modules.d.
                          Useful when running dracut from a git checkout.
   -H, --hostonly          Host-Only mode: Install only what is needed for
                          booting the local host instead of a generic host.
   -i, --include [SOURCE] [TARGET]
                         Include the files in the SOURCE directory into the
                          Target directory in the final initramfs.
   -I, --install [LIST]  Install the space separated list of files into the
                          initramfs.
 "
 }

 while (($# > 0)); do
     case $1 in
 	-f|--force) force=yes;;
 	-m|--modules) dracutmodules_l="$2"; shift;;
 	-o|--omit) omit_dracutmodules_l="$2"; shift;;
 	-a|--add) add_dracutmodules_l="$2"; shift;;
 	-d|--drivers) drivers_l="$2"; shift;;
 	-k|--kmoddir) drivers_dir_l="$2"; shift;;
 	--fwdir) fw_dir_l="$2"; shift;;
 	--kernel-only) kernel_only="yes"; nokernel="no";;
 	--no-kernel) kernel_only="no"; no_kernel="yes";;
 	--strip) do_strip_l="yes";;
 	--nostrip) do_strip_l="no";;
 	-h|--help) usage; exit 1 ;;
 	--debug) debug="yes";;
 	-v|--verbose) beverbose="yes";;
 	-c|--conf) conffile="$2"; shift;;
 	-l|--local) allowlocal="yes" ;;
 	-H|--hostonly) hostonly_l="yes" ;;
 	-i|--include) include_src="$2"; include_target="$3"; shift 2;;
 	-I|--install) install_items="$2"; shift;;
 	-*) printf "\nUnknown option: %s\n\n" "$1" >&2; usage; exit 1;;
 	*) break ;;
     esac
     shift
 done

 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$PATH

 [[ $debug ]] && {
     export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
     set -x
 }

 # if we were not passed a config file, try the default one
 [[ ! -f $conffile ]] && conffile="/etc/dracut.conf"

 # source our config file
 [[ -f $conffile ]] && . "$conffile"

 # these options override the stuff in the config file
 [[ $dracutmodules_l ]] && dracutmodules=$dracutmodules_l
 [[ $omit_dracutmodules_l ]] && omit_dracutmodules=$omit_dracutmodules_l
 [[ $add_dracutmodules_l ]] && add_dracutmodules="$add_dracutmodules $add_dracutmodules_l"
 [[ $drivers_l ]] && drivers=$drivers_l
 [[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l
 [[ $fw_dir_l ]] && fw_dir=$fw_dir_l
 [[ $do_strip_l ]] && do_strip=$do_strip_l
 [[ $hostonly_l ]] && hostonly=$hostonly_l
 [[ $dracutbasedir ]] || dracutbasedir=/usr/share/dracut
 [[ $fw_dir ]] || fw_dir=/lib/firmware
 [[ $do_strip ]] || do_strip=yes
 # eliminate IFS hackery when messing with fw_dir
 fw_dir=${fw_dir//:/ }

 [[ $hostonly = yes ]] && hostonly="-h"

 [[ $allowlocal && -f "$(dirname $0)/dracut-functions" ]] && dsrc="$(dirname $0)" || dsrc=$dracutbasedir

 if [[ -f $dsrc/dracut-functions ]]; then
    . $dsrc/dracut-functions
 else
    echo "Cannot find $dsrc/dracut-functions. Are you running from a git checkout?"
    echo "Try passing -l as an argument to $0"
    exit 1
 fi

 dracutfunctions=$dsrc/dracut-functions
 export dracutfunctions

 # This is kinda legacy -- eventually it should go away.
 case $dracutmodules in
     ""|auto) dracutmodules="all" ;;
 esac

 [[ $2 ]] && kernel=$2 || kernel=$(uname -r)
 [[ $1 ]] && outfile=$(readlink -f $1) || outfile="/boot/initrd-$kernel.img"

 srcmods="/lib/modules/$kernel/"
 [[ $drivers_dir ]] && srcmods="$drivers_dir"
 export srcmods

 if [[ -f $outfile && ! $force ]]; then
     echo "Will not override existing initramfs ($outfile) without --force"
     exit 1
 fi

 hookdirs="cmdline pre-udev pre-trigger netroot pre-mount pre-pivot mount emergency"

 readonly initdir=$(mktemp -d -t initramfs.XXXXXX)
 trap 'rm -rf "$initdir"' 0 # clean up after ourselves no matter how we die.

 # Need to be able to have non-root users read stuff (rpcbind etc)
 chmod 755 "$initdir"

 export initdir hookdirs dsrc dracutmodules drivers \
     fw_dir drivers_dir debug beverbose no_kernel kernel_only

 if [[ $kernel_only != yes ]]; then
     # Create some directory structure first
     for d in bin sbin usr/bin usr/sbin usr/lib etc proc sys sysroot tmp dev/pts var/run; do
 	mkdir -p "$initdir/$d";
     done
 fi

 # check all our modules to see if they should be sourced.
 # This builds a list of modules that we will install next.
 check_modules

 #source our modules.
 for moddir in "$dsrc/modules.d"/[0-9][0-9]*; do
     mod=${moddir##*/}; mod=${mod#[0-9][0-9]}
     if strstr "$mods_to_load" " $mod "; then
 	if [[ $kernel_only = yes ]]; then
 	    [[ -x $moddir/installkernel ]] && . "$moddir/installkernel"
 	else
 	    . "$moddir/install"
 	    if [[ $no_kernel != yes && -x $moddir/installkernel ]]; then
 		. "$moddir/installkernel"
 	    fi
 	fi
 	mods_to_load=${mods_to_load// $mod /}
     fi
 done
 unset moddir
 echo $mods_to_load

 ## final stuff that has to happen

 # generate module dependencies for the initrd
 if [[ -d $initdir/lib/modules/$kernel ]]; then
     if ! depmod -a -b "$initdir" $kernel; then
         echo "\"depmod -a $kernel\" failed."
         exit 1
     fi
 fi

 # make sure that library links are correct and up to date
 ldconfig -n -r "$initdir" /lib* /usr/lib*

 if [[ $include_src && $include_target ]]; then
     mkdir -p "$initdir$include_target"
     cp -a -t "$initdir$include_target" "$include_src"/*
 fi

 for item in $install_items; do
    dracut_install "$item"
 done
 unset item

 [[ $beverbose = yes ]] && (du -c "$initdir" | sort -n)

 # strip binaries
 if [[ $do_strip = yes ]] ; then
     for p in strip objdump sed grep find; do
 	if ! which $p >/dev/null 2>&1; then
 	    derror "Could not find '$p'. You should run $0 with '--nostrip'."
 	    do_strip=no
 	fi
     done
 fi

 if [[ $do_strip = yes ]] ; then
     for f in $(find "$initdir" -type f \( -perm -0100 -or -perm -0010 -or -perm -0001 \) -exec file {} \; |
 	grep -v ' shared object,' |
 	sed -n -e 's/^\(.*\):[ 	]*ELF.*, not stripped/\1/p'); do
 	dinfo "Stripping $f"
 	strip -g "$f" || :
         #
         # FIXME: only strip -g for now
         #
 	#strip -g --strip-unneeded "$f" || :
 	#note="-R .note"
 	#if objdump -h $f | grep '^[ 	]*[0-9]*[ 	]*.note[ 	]' -A 1 | \
 	#    grep -q ALLOC; then
 	#    note=
 	#fi
 	#strip -R .comment $note "$f" || :
     done
 fi

 ( cd "$initdir"; find . |cpio -R 0:0 -H newc -o |gzip -9 > "$outfile"; )

 [[ $beverbose = yes ]] && ls -lh "$outfile"

 exit 0
	#!/bin/bash
	#
	# Generator script for a dracut initramfs
	# Tries to retain some degree of compatibility with the command line
	# of the various mkinitrd implementations out there
	#

	# Copyright 2005-2009 Red Hat, Inc. All rights reserved.
	#
	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 2 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program. If not, see <http://www.gnu.org/licenses/>.
	#


	usage() {
	# 80x25 linebreak here ^
	echo "Usage: $0 [OPTION]... <initramfs> <kernel-version>
	Creates initial ramdisk images for preloading modules

	-f, --force Overwrite existing initramfs file.
	-m, --modules [LIST] Specify a space-separated list of dracut modules to
	call when building the initramfs. Modules are located
	in /usr/share/dracut/modules.d.
	-o, --omit [LIST] Omit a space-separated list of dracut modules.
	-a, --add [LIST] Add a space-separated list of dracut modules.
	-d, --drivers [LIST] Specify a space-separated list of kernel modules to
	include in the initramfs.
	-k, --kmoddir [DIR] Specify the directory, where to look for kernel
	modules
	--fwdir [DIR] Specify additional directories, where to look for
	firmwares, separated by :
	--kernel-only Only install kernel drivers and firmware files
	--no-kernel Do not install kernel drivers and firmware files
	--strip Strip binaries in the initramfs (default)
	--nostrip Do not strip binaries in the initramfs
	-h, --help This message
	--debug Output debug information of the build process
	-v, --verbose Verbose output during the build process
	-c, --conf [FILE] Specify configuration file to use.
	Default: /etc/dracut.conf
	-l, --local Local mode. Use modules from the current working
	directory instead of the system-wide installed in
	/usr/share/dracut/modules.d.
	Useful when running dracut from a git checkout.
	-H, --hostonly Host-Only mode: Install only what is needed for
	booting the local host instead of a generic host.
	-i, --include [SOURCE] [TARGET]
	Include the files in the SOURCE directory into the
	Target directory in the final initramfs.
	-I, --install [LIST] Install the space separated list of files into the
	initramfs.
	"
	}

	while (($# > 0)); do
	case $1 in
	-f\|--force) force=yes;;
	-m\|--modules) dracutmodules_l="$2"; shift;;
	-o\|--omit) omit_dracutmodules_l="$2"; shift;;
	-a\|--add) add_dracutmodules_l="$2"; shift;;
	-d\|--drivers) drivers_l="$2"; shift;;
	-k\|--kmoddir) drivers_dir_l="$2"; shift;;
	--fwdir) fw_dir_l="$2"; shift;;
	--kernel-only) kernel_only="yes"; nokernel="no";;
	--no-kernel) kernel_only="no"; no_kernel="yes";;
	--strip) do_strip_l="yes";;
	--nostrip) do_strip_l="no";;
	-h\|--help) usage; exit 1 ;;
	--debug) debug="yes";;
	-v\|--verbose) beverbose="yes";;
	-c\|--conf) conffile="$2"; shift;;
	-l\|--local) allowlocal="yes" ;;
	-H\|--hostonly) hostonly_l="yes" ;;
	-i\|--include) include_src="$2"; include_target="$3"; shift 2;;
	-I\|--install) install_items="$2"; shift;;
	-*) printf "\nUnknown option: %s\n\n" "$1" >&2; usage; exit 1;;
	*) break ;;
	esac
	shift
	done

	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$PATH

	[[ $debug ]] && {
	export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
	set -x
	}

	# if we were not passed a config file, try the default one
	[[ ! -f $conffile ]] && conffile="/etc/dracut.conf"

	# source our config file
	[[ -f $conffile ]] && . "$conffile"

	# these options override the stuff in the config file
	[[ $dracutmodules_l ]] && dracutmodules=$dracutmodules_l
	[[ $omit_dracutmodules_l ]] && omit_dracutmodules=$omit_dracutmodules_l
	[[ $add_dracutmodules_l ]] && add_dracutmodules="$add_dracutmodules $add_dracutmodules_l"
	[[ $drivers_l ]] && drivers=$drivers_l
	[[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l
	[[ $fw_dir_l ]] && fw_dir=$fw_dir_l
	[[ $do_strip_l ]] && do_strip=$do_strip_l
	[[ $hostonly_l ]] && hostonly=$hostonly_l
	[[ $dracutbasedir ]] \|\| dracutbasedir=/usr/share/dracut
	[[ $fw_dir ]] \|\| fw_dir=/lib/firmware
	[[ $do_strip ]] \|\| do_strip=yes
	# eliminate IFS hackery when messing with fw_dir
	fw_dir=${fw_dir//:/ }

	[[ $hostonly = yes ]] && hostonly="-h"

	[[ $allowlocal && -f "$(dirname $0)/dracut-functions" ]] && dsrc="$(dirname $0)" \|\| dsrc=$dracutbasedir

	if [[ -f $dsrc/dracut-functions ]]; then
	. $dsrc/dracut-functions
	else
	echo "Cannot find $dsrc/dracut-functions. Are you running from a git checkout?"
	echo "Try passing -l as an argument to $0"
	exit 1
	fi

	dracutfunctions=$dsrc/dracut-functions
	export dracutfunctions

	# This is kinda legacy -- eventually it should go away.
	case $dracutmodules in
	""\|auto) dracutmodules="all" ;;
	esac

	[[ $2 ]] && kernel=$2 \|\| kernel=$(uname -r)
	[[ $1 ]] && outfile=$(readlink -f $1) \|\| outfile="/boot/initrd-$kernel.img"

	srcmods="/lib/modules/$kernel/"
	[[ $drivers_dir ]] && srcmods="$drivers_dir"
	export srcmods

	if [[ -f $outfile && ! $force ]]; then
	echo "Will not override existing initramfs ($outfile) without --force"
	exit 1
	fi

	hookdirs="cmdline pre-udev pre-trigger netroot pre-mount pre-pivot mount emergency"

	readonly initdir=$(mktemp -d -t initramfs.XXXXXX)
	trap 'rm -rf "$initdir"' 0 # clean up after ourselves no matter how we die.

	# Need to be able to have non-root users read stuff (rpcbind etc)
	chmod 755 "$initdir"

	export initdir hookdirs dsrc dracutmodules drivers \
	fw_dir drivers_dir debug beverbose no_kernel kernel_only

	if [[ $kernel_only != yes ]]; then
	# Create some directory structure first
	for d in bin sbin usr/bin usr/sbin usr/lib etc proc sys sysroot tmp dev/pts var/run; do
	mkdir -p "$initdir/$d";
	done
	fi

	# check all our modules to see if they should be sourced.
	# This builds a list of modules that we will install next.
	check_modules

	#source our modules.
	for moddir in "$dsrc/modules.d"/[0-9][0-9]*; do
	mod=${moddir##*/}; mod=${mod#[0-9][0-9]}
	if strstr "$mods_to_load" " $mod "; then
	if [[ $kernel_only = yes ]]; then
	[[ -x $moddir/installkernel ]] && . "$moddir/installkernel"
	else
	. "$moddir/install"
	if [[ $no_kernel != yes && -x $moddir/installkernel ]]; then
	. "$moddir/installkernel"
	fi
	fi
	mods_to_load=${mods_to_load// $mod /}
	fi
	done
	unset moddir
	echo $mods_to_load

	## final stuff that has to happen

	# generate module dependencies for the initrd
	if [[ -d $initdir/lib/modules/$kernel ]]; then
	if ! depmod -a -b "$initdir" $kernel; then
	echo "\"depmod -a $kernel\" failed."
	exit 1
	fi
	fi

	# make sure that library links are correct and up to date
	ldconfig -n -r "$initdir" /lib* /usr/lib*

	if [[ $include_src && $include_target ]]; then
	mkdir -p "$initdir$include_target"
	cp -a -t "$initdir$include_target" "$include_src"/*
	fi

	for item in $install_items; do
	dracut_install "$item"
	done
	unset item

	[[ $beverbose = yes ]] && (du -c "$initdir" \| sort -n)

	# strip binaries
	if [[ $do_strip = yes ]] ; then
	for p in strip objdump sed grep find; do
	if ! which $p >/dev/null 2>&1; then
	derror "Could not find '$p'. You should run $0 with '--nostrip'."
	do_strip=no
	fi
	done
	fi

	if [[ $do_strip = yes ]] ; then
	for f in $(find "$initdir" -type f \( -perm -0100 -or -perm -0010 -or -perm -0001 \) -exec file {} \; \|
	grep -v ' shared object,' \|
	sed -n -e 's/^\(.\):[ ]ELF.*, not stripped/\1/p'); do
	dinfo "Stripping $f"
	strip -g "$f" \|\| :
	#
	# FIXME: only strip -g for now
	#
	#strip -g --strip-unneeded "$f" \|\| :
	#note="-R .note"
	#if objdump -h $f \| grep '^[ ][0-9][ ]*.note[ ]' -A 1 \| \
	# grep -q ALLOC; then
	# note=
	#fi
	#strip -R .comment $note "$f" \|\| :
	done
	fi

	( cd "$initdir"; find . \|cpio -R 0:0 -H newc -o \|gzip -9 > "$outfile"; )

	[[ $beverbose = yes ]] && ls -lh "$outfile"

	exit 0