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#!/bin/bash
#
# This utility extracts an SDK image tarball using pseudo, and stores
# the pseudo database in var/pseudo within the rootfs. If you want to
# boot QEMU using an nfsroot, you *must* use this script to create the
# rootfs to ensure it is done correctly with pseudo.
#
# Copyright (c) 2010 Intel Corp.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
function usage() {
echo "Usage: $0 <runqemu-sdk-tarball> <extract-dir>"
}
if [ $# -ne 2 ]; then
usage
exit 1
fi
SYSROOT_SETUP_SCRIPT=`which oe-find-native-sysroot`
if [ -z "$SYSROOT_SETUP_SCRIPT" ]; then
echo "Error: Unable to find the oe-find-native-sysroot script"
echo "Did you forget to source your Poky environment script?"
exit 1
fi
. $SYSROOT_SETUP_SCRIPT
PSEUDO_OPTS="-P $OECORE_NATIVE_SYSROOT/usr"
ROOTFS_TARBALL=$1
SDK_ROOTFS_DIR=$2
if [ ! -e "$ROOTFS_TARBALL" ]; then
echo "Error: sdk tarball '$ROOTFS_TARBALL' does not exist"
usage
exit 1
fi
# Convert SDK_ROOTFS_DIR to a full pathname
if [[ ${SDK_ROOTFS_DIR:0:1} != "/" ]]; then
SDK_ROOTFS_DIR=$(pwd)/$SDK_ROOTFS_DIR
fi
TAR_OPTS=""
if [[ "$ROOTFS_TARBALL" =~ tar\.bz2$ ]]; then
TAR_OPTS="-xjf"
fi
if [[ "$ROOTFS_TARBALL" =~ tar\.gz$ ]]; then
TAR_OPTS="-xzf"
fi
if [[ "$ROOTFS_TARBALL" =~ \.tar$ ]]; then
TAR_OPTS="-xf"
fi
if [ -z "$TAR_OPTS" ]; then
echo "Error: Unable to determine sdk tarball format"
echo "Accepted types: .tar / .tar.gz / .tar.bz2"
exit 1
fi
if [ ! -d "$SDK_ROOTFS_DIR" ]; then
echo "Creating directory $SDK_ROOTFS_DIR"
mkdir -p "$SDK_ROOTFS_DIR"
fi
if [ -e "$SDK_ROOTFS_DIR/var/pseudo" ]; then
echo "Error: $SDK_ROOTFS_DIR/var/pseudo already exists!"
echo "Please delete the entire rootfs tree manually if this is really what you want"
exit 1
fi
mkdir -p "$SDK_ROOTFS_DIR/var/pseudo"
touch "$SDK_ROOTFS_DIR/var/pseudo/pseudo.pid"
PSEUDO_LOCALSTATEDIR="$SDK_ROOTFS_DIR/var/pseudo"
export PSEUDO_LOCALSTATEDIR
echo "Extracting rootfs tarball using pseudo..."
echo "$PSEUDO $PSEUDO_OPTS tar -C \"$SDK_ROOTFS_DIR\" $TAR_OPTS \"$ROOTFS_TARBALL\""
$PSEUDO $PSEUDO_OPTS tar -C "$SDK_ROOTFS_DIR" $TAR_OPTS "$ROOTFS_TARBALL"
DIRCHECK=`ls -l "$SDK_ROOTFS_DIR" | wc -l`
if [ "$DIRCHECK" -lt 5 ]; then
echo "Warning: I don't see many files in $SDK_ROOTFS_DIR"
echo "Please double-check the extraction worked as intended"
exit 0
fi
echo "SDK image successfully extracted to $SDK_ROOTFS_DIR"
exit 0
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