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|
#!/bin/sh -e
#
# minksrc.sh - Extract files needed to build tcsim from a kernel tarball
#
# Written 2003,2004 by Werner Almesberger
# Copyright 2003,2004 Werner Almesberger
#
[ -r tcsim/setup.klib ] || {
echo "$0 must be run from the tcng top-level directory" 1>&2
exit 1
}
usage()
{
echo "usage: $0 [-q] path_to/linux-2.4.x.tar.bz2" 1>&2
exit 1
}
if [ "$1" = -q ]; then
quiet=true
shift
else
quiet=false
fi
[ "${1#-}" = "$1" ] || usage
[ ! -z "$1" ] || usage
[ -f "$1" ] || {
echo "no such file: $1" 1>&2
exit 1
}
id=`basename "$1" .tar.bz2`
[ "${id#linux-}" != "$id" ] || usage
if [ "${id#linux-2.4.}" == "$id" ]; then
if [ "${id#linux-2.5.}" == "$id" ]; then
echo "Error while extracting from $1:" 1>&2
echo "$0 only supports 2.4 and 2.5 kernels" 1>&2
exit 1
fi
first_new=4
else
first_new=19
fi
v="${id#linux-2.[45].}"
[ "${v#[0-9]}" = "" -o "${v#[0-9][0-9]}" = "" ] || {
echo "Error while extracting from $1:" 1>&2
echo "kernel must be a regular release (no -pre, -rc, etc.)" 1>&2
exit 1
}
if [ $v -lt $first_new ]; then
dir=linux
else
dir=$id
fi
#
# Check if we've already extracted the tree
#
if [ -f $dir/.tarball ] && \
[ "`cat $dir/.tarball`" = "$1" -a "$1" -ot $dir/.tarball ]; then
$quiet || echo "Source tree has already been extracted to $dir"
exit 0
else
rm -f $dir/.tarball
fi
#
# Find out which source files we really need
#
if grep 'KSRC.*KSRC' tcsim/setup.klib >/dev/null; then
echo 'setup.klib must not contain lines with more than one use of $KSRC' \
2>&1
exit 1
fi
KFILES=`sed '/^#/d;/.*$KSRC\/\([a-zA-Z0-9_\/{},.-]*\).*/{s//\1/;p;};d' \
<tcsim/setup.klib`
KFILES=`eval echo $KFILES` # expand {...,...}
KFILES="Makefile $KFILES"
KFILES=`echo $KFILES | tr ' ' '\012' | sort | uniq`
#
# Ugly: since not all files may be present, we ignore all errors from tar
# (unfortunately, including ENOSPC, etc.)
#
$quiet || echo "Extracting files from $1 ..."
$quiet || echo '(may yield a few "Not found in archive" messages)'
tar xfj "$1" `for n in $KFILES; do echo $dir/$n; done` || true
echo "$1" >$dir/.tarball
$quiet || echo "Extracted to ./$dir/"
|
