1#!/bin/bash
2#
3# This utility extracts an SDK image tarball using pseudo, and stores
4# the pseudo database in var/pseudo within the rootfs. If you want to
5# boot QEMU using an nfsroot, you *must* use this script to create the
6# rootfs to ensure it is done correctly with pseudo.
7#
8# Copyright (c) 2010 Intel Corp.
9#
10# SPDX-License-Identifier: GPL-2.0-only
11#
12
13function usage() {
14	echo "Usage: $0 <image-tarball> <extract-dir>"
15}
16
17if [ $# -ne 2 ]; then
18	usage
19	exit 1
20fi
21
22SYSROOT_SETUP_SCRIPT=`which oe-find-native-sysroot 2> /dev/null`
23if [ -z "$SYSROOT_SETUP_SCRIPT" ]; then
24	echo "Error: Unable to find the oe-find-native-sysroot script"
25	echo "Did you forget to source your build system environment setup script?"
26	exit 1
27fi
28. $SYSROOT_SETUP_SCRIPT qemu-helper-native
29PSEUDO_OPTS="-P $OECORE_NATIVE_SYSROOT/usr"
30
31ROOTFS_TARBALL=$1
32SDK_ROOTFS_DIR=$2
33
34if [ ! -e "$ROOTFS_TARBALL" ]; then
35	echo "Error: sdk tarball '$ROOTFS_TARBALL' does not exist"
36	usage
37	exit 1
38fi
39
40# Convert SDK_ROOTFS_DIR to a full pathname
41if [[ ${SDK_ROOTFS_DIR:0:1} != "/" ]]; then
42	SDK_ROOTFS_DIR=$(readlink -f $(pwd)/$SDK_ROOTFS_DIR)
43fi
44
45TAR_OPTS=""
46if [[ "$ROOTFS_TARBALL" =~ tar\.xz$ ]]; then
47	TAR_OPTS="--numeric-owner -xJf"
48fi
49if [[ "$ROOTFS_TARBALL" =~ tar\.bz2$ ]]; then
50	TAR_OPTS="--numeric-owner -xjf"
51fi
52if [[ "$ROOTFS_TARBALL" =~ tar\.gz$ ]]; then
53	TAR_OPTS="--numeric-owner -xzf"
54fi
55if [[ "$ROOTFS_TARBALL" =~ \.tar$ ]]; then
56	TAR_OPTS="--numeric-owner -xf"
57fi
58if [ -z "$TAR_OPTS" ]; then
59	echo "Error: Unable to determine sdk tarball format"
60	echo "Accepted types: .tar / .tar.gz / .tar.bz2 / .tar.xz"
61	exit 1
62fi
63
64if [ ! -d "$SDK_ROOTFS_DIR" ]; then
65	echo "Creating directory $SDK_ROOTFS_DIR"
66	mkdir -p "$SDK_ROOTFS_DIR"
67fi
68
69pseudo_state_dir="$SDK_ROOTFS_DIR/../$(basename "$SDK_ROOTFS_DIR").pseudo_state"
70pseudo_state_dir="$(readlink -f $pseudo_state_dir)"
71
72debug_image="`echo $ROOTFS_TARBALL | grep '\-dbg\.rootfs\.tar'`"
73
74if [ -e "$pseudo_state_dir" -a -z "$debug_image" ]; then
75	echo "Error: $pseudo_state_dir already exists!"
76	echo "Please delete the rootfs tree and pseudo directory manually"
77	echo "if this is really what you want."
78	exit 1
79fi
80
81mkdir -p "$pseudo_state_dir"
82touch "$pseudo_state_dir/pseudo.pid"
83PSEUDO_LOCALSTATEDIR="$pseudo_state_dir"
84export PSEUDO_LOCALSTATEDIR
85
86echo "Extracting rootfs tarball using pseudo..."
87echo "$PSEUDO $PSEUDO_OPTS tar -C \"$SDK_ROOTFS_DIR\" $TAR_OPTS \"$ROOTFS_TARBALL\""
88$PSEUDO $PSEUDO_OPTS tar -C "$SDK_ROOTFS_DIR" $TAR_OPTS "$ROOTFS_TARBALL"
89
90DIRCHECK=`ls -l "$SDK_ROOTFS_DIR" | wc -l`
91if [ "$DIRCHECK" -lt 5 ]; then
92	echo "Warning: I don't see many files in $SDK_ROOTFS_DIR"
93	echo "Please double-check the extraction worked as intended"
94	exit 0
95fi
96
97echo "SDK image successfully extracted to $SDK_ROOTFS_DIR"
98
99exit 0
100