ignore testimages

[thirdparty/dracut.git] / dracut

#!/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 2008, Red Hat, Inc.  Jeremy Katz <katzj@redhat.com>
# GPLv2 header here

while (($# > 0)); do
    case $1 in
	-f|--force) force=yes;;
	-m|--modules) dracutmodules_l="$2"; shift;;
	-d|--drivers) modules_l="$2"; shift;;
	-h|--help) echo "Usage: $0 [-f] <initramfs> <kernel-version>"
	    exit 1 ;;
	-v|--verbose) set -x;;
	-c|--conf) conffile="$2"; shift;;
	-l|--local) allowlocal="yes" ;;
	-h|--hostonly) hostonly="-h" ;;
	--skip-missing) skipmissing="yes" ;;
	*) break ;;
    esac
    shift
done

[[ -f $conffile ]] || ( [[ -f /etc/dracut.conf ]] && conffile="/etc/dracut.conf" )
[[ -f $conffile ]] && . "$conffile"
[[ $dracutmodules_l ]] && dracutmodules=$dracutmodules_l
[[ $modules_l ]] && modules=$modules_l

[[ $allowlocal && -f dracut-functions ]] && dsrc="." || dsrc=/usr/lib/dracut
. $dsrc/dracut-functions
dracutfunctions=$dsrc/dracut-functions
export dracutfunctions

[[ $dracutmodules ]] || dracutmodules="auto"
[[ $dracutmodules = "auto" ]] && {
    dracutmodules="all"
    skipmissing="yes"
}
[[ $dracutmodules = "hostonly" ]] && {
    dracutmodules="all"
    skipmissing="yes"
    hostonly="-h"
}


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

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

hookdirs="pre-udev pre-mount pre-pivot mount"

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

export initdir hookdirs dsrc dracutmodules modules

# Create some directory structure first
for d in bin sbin usr/bin usr/sbin usr/lib etc proc sys sysroot dev/pts; do 
    mkdir -p "$initdir/$d"; 
done

skip_missing() {
    # $1 = location of module
    [[ $skipmissing ]] || return 0
    [[ -x $1/check ]] || return 0
    "$1/check" $hostonly
}

can_source_module() {
    # $1 = location of module
    mod=${1##*/}; mod=${mod#[0-9][0-9]};
    if [[ $dracutmodules != all ]]; then
	strstr "$dracutmodules " "$mod " || return 1
    fi
    skip_missing "$1"
}

# source all our modules
for moddir in "$dsrc/modules.d"/*; do
    [[ -d $moddir || -L $moddir ]] || continue
    can_source_module "$moddir" || continue
    [[ -x $moddir/install ]] && . "$moddir/install"
done
unset moddir

## final stuff that has to happen

# generate module dependencies for the initrd
/sbin/depmod -a -b "$initdir" $kernel || {
    echo "\"/sbin/depmod -a $kernel\" failed."
    exit 1
}

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

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