diff options
Diffstat (limited to 'linux-2.6-xen-sparse/mkbuildtree')
-rwxr-xr-x | linux-2.6-xen-sparse/mkbuildtree | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/linux-2.6-xen-sparse/mkbuildtree b/linux-2.6-xen-sparse/mkbuildtree new file mode 100755 index 0000000000..3556506d6d --- /dev/null +++ b/linux-2.6-xen-sparse/mkbuildtree @@ -0,0 +1,111 @@ +#!/bin/bash + +# mkbuildtree <build tree> +# +# Creates symbolic links in <build tree> for the sparse tree +# in the current directory. + +# Script to determine the relative path between two directories. +# Copyright (c) D. J. Hawkey Jr. 2002 +# Fixed for Xen project by K. Fraser in 2003. +abs_to_rel () +{ + local CWD SRCPATH + + if [ "$1" != "/" -a "${1##*[^/]}" = "/" ]; then + SRCPATH=${1%?} + else + SRCPATH=$1 + fi + if [ "$2" != "/" -a "${2##*[^/]}" = "/" ]; then + DESTPATH=${2%?} + else + DESTPATH=$2 + fi + + CWD=$PWD + [ "${1%%[^/]*}" != "/" ] && cd $1 && SRCPATH=$PWD + [ "${2%%[^/]*}" != "/" ] && cd $2 && DESTPATH=$PWD + [ "$CWD" != "$PWD" ] && cd $CWD + + BASEPATH=$SRCPATH + + [ "$SRCPATH" = "$DESTPATH" ] && DESTPATH="." && return + [ "$SRCPATH" = "/" ] && DESTPATH=${DESTPATH#?} && return + + while [ "$BASEPATH/" != "${DESTPATH%${DESTPATH#$BASEPATH/}}" ]; do + BASEPATH=${BASEPATH%/*} + done + + SRCPATH=${SRCPATH#$BASEPATH} + DESTPATH=${DESTPATH#$BASEPATH} + DESTPATH=${DESTPATH#?} + while [ -n "$SRCPATH" ]; do + SRCPATH=${SRCPATH%/*} + DESTPATH="../$DESTPATH" + done + + [ -z "$BASEPATH" ] && BASEPATH="/" + [ "${DESTPATH##*[^/]}" = "/" ] && DESTPATH=${DESTPATH%?} +} + +# relative_lndir <target_dir> +# Creates a tree of symlinks in the current working directory that mirror +# real files in <target_dir>. <target_dir> should be relative to the current +# working directory. Symlinks in <target_dir> are ignored. Source-control files +# are ignored. +relative_lndir () +{ + local SYMLINK_DIR REAL_DIR pref i j + SYMLINK_DIR=$PWD + REAL_DIR=$1 + ( + cd $REAL_DIR + for i in `find . -type d | grep -v SCCS`; do + [ -d $SYMLINK_DIR/$i ] || mkdir -p $SYMLINK_DIR/$i + ( + cd $i + pref=`echo $i | sed -e 's#/[^/]*#../#g' -e 's#^\.##'` + for j in `find . -maxdepth 1 -type f -o -type l`; do + ln -sf ${pref}${REAL_DIR}/$i/$j ${SYMLINK_DIR}/$i/$j + done + ) + done + ) +} + +[ "$1" == "" ] && { echo "Syntax: $0 <linux tree to xenify>"; exit 1; } + +# Get absolute path to the destination directory +pushd . >/dev/null +cd ${1} || { echo "cannot cd to ${1}"; exit 1; } +AD=$PWD +popd >/dev/null + +# Get absolute path to the source directory +AS=`pwd` + +# Get path to source, relative to destination +abs_to_rel ${AD} ${AS} +RS=$DESTPATH + +# Remove old copies of files and directories at the destination +for i in `find . -type f -o -type l` ; do rm -f ${AD}/${i#./} ; done + +# We now work from the destination directory +cd ${AD} || { echo "cannot cd to ${AD}"; exit 1; } + +# Remove old symlinks +for i in `find . -type l`; do rm -f $i; done + +# Create symlinks of files and directories which exist in the sparse source +relative_lndir ${RS} +rm -f mkbuildtree + + +# Create links to the shared definitions of the Xen interfaces. +rm -rf ${AD}/include/asm-xen/xen-public +mkdir ${AD}/include/asm-xen/xen-public +cd ${AD}/include/asm-xen/xen-public +relative_lndir ../../../${RS}/../xen/include/public + |