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Peter Seebach 92e40ec859 runqemu-export-rootfs and friends: don't put pseudo db in target fs

In a few places, we have scripts which use <rootfs>/var/pseudo for
the pseudo state directory controlling a given filesystem. This
seems possibly risky because it means that stuff running under
qemu or whatnot could wipe out the data being used to handle that
rootfs. Move this to:
  <rootfs>/../$(basename_rootfs).pseudo_state
to avoid problems.

This also solves at least one case (not directly hit by yocto's
tree) wherein you could end up trying to remove a rootfs while
pseudo was using a database inside that rootfs, and thus the
remove would fail.

(From OE-Core rev: aa5d6bd006d3b4eede21d8987451876ed3385ab8)

Signed-off-by: Peter Seebach <peter.seebach@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2012-08-29 16:02:10 -07:00

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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 " }

if [ $# -ne 2 ]; then usage exit 1 fi

SYSROOT_SETUP_SCRIPT=which oe-find-native-sysroot 2> /dev/null if [ -z "$SYSROOT_SETUP_SCRIPT" ]; then echo "Error: Unable to find the oe-find-native-sysroot script" echo "Did you forget to source your build system environment setup 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 ; 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

pseudo_state_dir="$SDK_ROOTFS_DIR/../$(basename "$SDK_ROOTFS_DIR").pseudo_state"

if [ -e "$pseudo_state_dir" ]; then echo "Error: $pseudo_state_dir already exists!" echo "Please delete the rootfs tree and pseudo directory manually" echo "if this is really what you want." exit 1 fi

mkdir -p "$pseudo_state_dir" touch "$pseudo_state_dir/pseudo.pid" PSEUDO_LOCALSTATEDIR="$pseudo_state_dir" 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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