On Fri, Sep 08, 2006 at 06:18:01PM +0200, Eric Spakman wrote:
> I'd be interested to know how much adding traceroute to busybox does
> with the size of the initrds.
With traceroute:
-rwxr-xr-x 1 root root 272952 2006-09-08 00:52 busybox
Without:
-rwsr-xr-x 1 root root 266136 Sep 4 2006 /bin/busybox
Speaking of busybox, I noticed that you're linking busybox to its linked
commands with symbolic links instead of hardlinks. Using hardlinks
should be more memory and space efficient *if* using a symbolic link
takes up an inode in the filesystem in memory/on disk. Unfortunately,
my memory is too foggy to remember exactly which filesystems symbolic
links take inodes in vs directory entries.
> Having argument processing is indeed nice, but automatically finding
> boot media is not really necessary in my opinion. It doesn't need to
> be a fully automatic process. If you just mount the device and
> something like 'loadmod /mnt/Bering-uClibc-2.4.33.tar.gz' it should
> be enough for a start.
OK, then you're welcome to add this to the distribution. :-)
Feel free to bang on it.
#!/bin/sh
#
# Build /lib/modules based upon the contents of /etc/modules and a
# defined modules repository.
#
# Copyright (c) Paul Traina 2006, GPL v2
#
MODLIST=/etc/modules
MODREPO=/mnt/modules.tgz
LIBMOD=/lib/modules
##########################################################################
progname=`basename $0`
usage() {
cat >&2 <<-EOF
Usage: $progname [ -m modules ] [ -f modules.tar.gz ] [ -l module-dir ]
Defaults:
-m $MODLIST
-f $MODREPO
-l $LIBMOD
Extract kernel modules from $MODREPO into $LIBMOD
based upon the contents of $MODLIST.
EOF
}
args=`getopt -a -o hm:f:l: -n "$progname" -- "$@"`
if [ $? != 0 ] ; then
usage
exit 1
fi
eval set -- "$args"
while true ; do
case "$1" in
-h) usage; exit 0 ;;
-m) MODLIST="$2"; shift 2 ;;
-f) MODREPO="$2"; shift 2 ;;
-l) LIBMOD="$2"; shift 2 ;;
--) shift; break ;;
*) echo >&2 "Internal error"; exit 1 ;;
esac
done
if [ ! -f $MODLIST ] ; then
echo >&2 "$progname: module list $MODLIST not found"
exit 1
fi
if [ ! -f $MODREPO ] ; then
echo >&2 "$progname: module repository $MODREPO not found"
exit 1
fi
if [ ! -d $LIBMOD ] ; then
echo >&2 "$progname: module directory $LIBMOD not found"
exit 1
fi
##########################################################################
MODLIST=/tmp/build-modules-list.$$
MODTEMP=/tmp/build-modules-extract.$$
for mod in $modules ; do
if [ ! -f $LIBMOD/${mod}.o ] ; then
missing="${mod}.o ${missing}"
fi
done
# Nothing missing...
if [ -z "$missing" ] ; then
exit 0
fi
echo "Missing kernel modules: ${missing}"
#
# get absolute path of all modules in tarfile first (sigh)
#
trap "rm -f $MODLIST" 0 1 2
tar tzf $MODREPO > $MODLIST
for mod in $missing ; do
findmod="`grep -F ${mod} $MODLIST` ${findmod}"
done
rm -f $MODLIST
trap '' 0 1 2
#
# Now do the actual module extraction to a temporary area and then
# move the modules to /lib/modules
#
trap "rm -rf $MODTEMP" 0 1 2
mkdir $MODTEMP
tar xzf $MODREPO -C $MODTEMP $findmod
echo
echo -n "Installing modules:"
for mod in $findmod ; do
echo -n " `basename $mod .o`"
mv $MODTEMP/$mod $LIBMOD/`basename $mod`
done
echo
rm -rf $MODTEMP
trap '' 0 1 2
exit 0
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