nandroid/nandroid-mobile.sh - android_bootable_recovery - Gitiles

 #!/sbin/sh

 # nandroid v2.1 - an Android backup tool for the G1 by infernix and brainaid

 # Requirements:

 # - a modded android in recovery mode (JF 1.3 will work by default)
 # - adb shell as root in recovery mode if not using a pre-made recovery image
 # - busybox in recovery mode
 # - dump_image-arm-uclibc compiled and in path on phone
 # - mkyaffs2image-arm-uclibc compiled and installed in path on phone

 # Reference data:

 # dev:    size   erasesize  name
 #mtd0: 00040000 00020000 "misc"
 #mtd1: 00500000 00020000 "recovery"
 #mtd2: 00280000 00020000 "boot"
 #mtd3: 04380000 00020000 "system"
 #mtd4: 04380000 00020000 "cache"
 #mtd5: 04ac0000 00020000 "userdata"
 #mtd6 is everything, dump splash1 with: dd if=/dev/mtd/mtd6ro of=/sdcard/splash1.img skip=19072 bs=2048 count=150

 # We don't dump misc or cache because they do not contain any useful data that we are aware of at this time.

 # Logical steps (v2.1):
 #
 # 0.  test for a target dir and the various tools needed, if not found then exit with error.
 # 1.  check "adb devices" for a device in recovery mode. set DEVICEID variable to the device ID. abort when not found.
 # 2.  mount system and data partitions read-only, set up adb portforward and create destdir
 # 3.  check free space on /cache, exit if less blocks than 20MB free
 # 4.  push required tools to device in /cache
 # 5   for partitions boot recovery misc:
 # 5a  get md5sum for content of current partition *on the device* (no data transfered)
 # 5b  while MD5sum comparison is incorrect (always is the first time):
 # 5b1 dump current partition to a netcat session
 # 5b2 start local netcat to dump image to current dir
 # 5b3 compare md5sums of dumped data with dump in current dir. if correct, contine, else restart the loop (6b1)
 # 6   for partitions system data:
 # 6a  get md5sum for tar of content of current partition *on the device* (no data transfered)
 # 6b  while MD5sum comparison is incorrect (always is the first time):
 # 6b1 tar current partition to a netcat session
 # 6b2 start local netcat to dump tar to current dir
 # 6b3 compare md5sums of dumped data with dump in current dir. if correct, contine, else restart the loop (6b1)
 # 6c  if i'm running as root:
 # 6c1 create a temp dir using either tempdir command or the deviceid in /tmp
 # 6c2 extract tar to tempdir
 # 6c3 invoke mkyaffs2image to create the img
 # 6c4 clean up
 # 7.  remove tools from device /cache
 # 8.  umount system and data on device
 # 9.  print success.


 RECOVERY=foo

 echo "nandroid-mobile v2.1"
 mkfstab.sh > /etc/fstab

 if [ "$1" == "" ]; then
 	echo "Usage: $0 {backup|restore} [/path/to/nandroid/backup/]"
 	echo "- backup will store a full system backup on /sdcard/nandroid"
 	echo "- restore path will restore the last made backup for boot, system, recovery and data"
 	exit 0
 fi

 case $1 in
 	backup)
 		mkyaffs2image=`which mkyaffs2image`
 		if [ "$mkyaffs2image" == "" ]; then
 			mkyaffs2image=`which mkyaffs2image-arm-uclibc`
 			if [ "$mkyaffs2image" == "" ]; then
 				echo "error: mkyaffs2image or mkyaffs2image-arm-uclibc not found in path"
 				exit 1
 			fi
 		fi
 		dump_image=`which dump_image`
 		if [ "$dump_image" == "" ]; then
 			dump_image=`which dump_image-arm-uclibc`
 			if [ "$dump_image" == "" ]; then
 				echo "error: dump_image or dump_image-arm-uclibc not found in path"
 				exit 1
 			fi
 		fi
 		break
 		;;
 	restore)
 		flash_image=`which flash_image`
 		if [ "$flash_image" == "" ]; then
 			flash_image=`which flash_image-arm-uclibc`
 			if [ "$flash_image" == "" ]; then
 				echo "error: flash_image or flash_image-arm-uclibc not found in path"
 				exit 1
 			fi
 		fi
 		unyaffs=`which unyaffs`
 		if [ "$unyaffs" == "" ]; then
 			echo "error: unyaffs not found in path"
 			exit 1
 		fi
 		break
 		;;
 esac

 # 1
 RECOVERY=`cat /proc/cmdline | grep "androidboot.mode=recovery"`
 if [ "$RECOVERY" == "foo" ]; then
 	echo "error: not running in recovery mode, aborting"
 	exit 1
 fi
 if [ ! "`id -u 2>/dev/null`" == "0" ]; then
 	if [ "`whoami 2>&1 | grep 'uid 0'`" == "" ]; then
 		echo "error: must run as root, aborting"
 		exit 1
 	fi
 fi


 case $1 in
 	restore)
 		ENERGY=`cat /sys/class/power_supply/battery/capacity`
 		if [ "`cat /sys/class/power_supply/battery/status`" == "Charging" ]; then
 			ENERGY=100
 		fi
 		if [ ! $ENERGY -ge 30 ]; then
 			echo "Error: not enough battery power"
 			echo "Connect charger or USB power and try again"
 			exit 1
 		fi
 		RESTOREPATH=$2
 		if [ ! -f $RESTOREPATH/nandroid.md5 ]; then
 			echo "error: $RESTOREPATH/nandroid.md5 not found, cannot verify backup data"
 			exit 1
 		fi
     umount /system 2>/dev/null
     umount /data 2>/dev/null
     mount -o rw /system || FAIL=1
     mount -o rw /data || FAIL=2
     case $FAIL in
     	1) echo "Error mounting system read-write"; umount /system /data /cache; exit 1;;
     	2) echo "Error mounting data read-write"; umount /system /data /cache; exit 1;;
     esac

 		echo "Verifying backup images..."
 		CWD=$PWD
 		cd $RESTOREPATH
 		md5sum -c nandroid.md5
 		if [ $? -eq 1 ]; then
 			echo "error: md5sum mismatch, aborting"
 			exit 1
 		fi
 		for image in boot; do
 			echo "Flashing $image..."
 			$flash_image $image $image.img
 		done
 		curdir=$(pwd)
 		for image in system data cache; do
 		  echo "Unpacking $image..."
       cd /$image
       rm -rf *
       unyaffs $curdir/$image.img
       cd $curdir
 	  done
 	  sync
     umount /system
     umount /data
     echo "Restore done"
 		exit 0
 		;;
 	backup)
 		break
 		;;
 	*)
 		echo "Usage: $0 {backup|restore} [/path/to/nandroid/backup/]"
 		echo "- backup will store a full system backup on /sdcard/nandroid"
 		echo "- restore path will restore the last made backup for boot, system, recovery and data"
 		exit 1
 		;;
 esac

 # 2.
 echo "mounting system and data read-only, sdcard read-write"
 umount /system 2>/dev/null
 umount /data 2>/dev/null
 umount /sdcard 2>/dev/null
 mount -o ro /system || FAIL=1
 mount -o ro /data || FAIL=2
 mount /sdcard || mount /dev/block/mmcblk0 /sdcard || FAIL=3
 case $FAIL in
 	1) echo "Error mounting system read-only"; umount /system /data /sdcard; exit 1;;
 	2) echo "Error mounting data read-only"; umount /system /data /sdcard; exit 1;;
 	3) echo "Error mounting sdcard read-write"; umount /system /data /sdcard; exit 1;;
 esac

 TIMESTAMP="`date +%Y%m%d-%H%M`"
 BASEDIR=/sdcard/nandroid
 if [ !-z "$2" ]; then
 	BASEDIR=$2
 fi

 DESTDIR=$BASEDIR/$TIMESTAMP
 if [ ! -d $DESTDIR ]; then
 	mkdir -p $DESTDIR
 	if [ ! -d $DESTDIR ]; then
 		echo "error: cannot create $DESTDIR"
 		umount /system 2>/dev/null
 		umount /data 2>/dev/null
 		umount /sdcard 2>/dev/null
 		exit 1
 	fi
 else
 	touch $DESTDIR/.nandroidwritable
 	if [ ! -e $DESTDIR/.nandroidwritable ]; then
 		echo "error: cannot write to $DESTDIR"
 		umount /system 2>/dev/null
 		umount /data 2>/dev/null
 		umount /sdcard 2>/dev/null
 		exit 1
 	fi
 	rm $DESTDIR/.nandroidwritable
 fi

 # 3.
 echo "checking free space on sdcard"
 FREEBLOCKS="`df -k /sdcard| grep sdcard | awk '{ print $4 }'`"
 # we need about 130MB for the dump
 if [ $FREEBLOCKS -le 130000 ]; then
 	echo "error: not enough free space available on sdcard (need 130mb), aborting."
 	umount /system 2>/dev/null
 	umount /data 2>/dev/null
 	umount /sdcard 2>/dev/null
 	exit 1
 fi


 if [ -e /dev/mtd/mtd6ro ]; then
 	echo -n "Dumping splash1 from device over tcp to $DESTDIR/splash1.img..."
 	dd if=/dev/mtd/mtd6ro of=$DESTDIR/splash1.img skip=19072 bs=2048 count=150 2>/dev/null
 	echo "done"
 	sleep 1s
 	echo -n "Dumping splash2 from device over tcp to $DESTDIR/splash2.img..."
 	dd if=/dev/mtd/mtd6ro of=$DESTDIR/splash2.img skip=19456 bs=2048 count=150 2>/dev/null
 	echo "done"
 fi


 # 5.
 for image in boot recovery misc; do
 	# 5a
 	DEVICEMD5=`$dump_image $image - | md5sum | awk '{ print $1 }'`
 	sleep 1s
 	MD5RESULT=1
 	# 5b
 	echo -n "Dumping $image to $DESTDIR/$image.img..."
 	ATTEMPT=0
 	while [ $MD5RESULT -eq 1 ]; do
 		let ATTEMPT=$ATTEMPT+1
 		# 5b1
 		$dump_image $image $DESTDIR/$image.img
 		sync
 		# 5b3
 		echo "${DEVICEMD5}  $DESTDIR/$image.img" | md5sum -c -s -
 		if [ $? -eq 1 ]; then
 			true
 		else
 			MD5RESULT=0
 		fi
 		if [ "$ATTEMPT" == "5" ]; then
 			echo "fatal error while trying to dump $image, aborting"
 			umount /system
 			umount /data
 			umount /sdcard
 			exit 1
 		fi
 	done
 	echo "done"
 done

 # 6
 for image in system data cache; do
 	# 6a
 	echo -n "Dumping $image to $DESTDIR/$image.img..."
 	$mkyaffs2image /$image $DESTDIR/$image.img
 	sync
 	echo "done"
 done


 # 7.
 echo -n "generating md5sum file..."
 CWD=$PWD
 cd $DESTDIR
 md5sum *img > nandroid.md5
 cd $CWD
 echo "done"

 # 8.
 echo "unmounting system, data and sdcard"
 umount /system
 umount /data
 umount /sdcard

 # 9.
 echo "Backup successful."
	#!/sbin/sh

	# nandroid v2.1 - an Android backup tool for the G1 by infernix and brainaid

	# Requirements:

	# - a modded android in recovery mode (JF 1.3 will work by default)
	# - adb shell as root in recovery mode if not using a pre-made recovery image
	# - busybox in recovery mode
	# - dump_image-arm-uclibc compiled and in path on phone
	# - mkyaffs2image-arm-uclibc compiled and installed in path on phone

	# Reference data:

	# dev: size erasesize name
	#mtd0: 00040000 00020000 "misc"
	#mtd1: 00500000 00020000 "recovery"
	#mtd2: 00280000 00020000 "boot"
	#mtd3: 04380000 00020000 "system"
	#mtd4: 04380000 00020000 "cache"
	#mtd5: 04ac0000 00020000 "userdata"
	#mtd6 is everything, dump splash1 with: dd if=/dev/mtd/mtd6ro of=/sdcard/splash1.img skip=19072 bs=2048 count=150

	# We don't dump misc or cache because they do not contain any useful data that we are aware of at this time.

	# Logical steps (v2.1):
	#
	# 0. test for a target dir and the various tools needed, if not found then exit with error.
	# 1. check "adb devices" for a device in recovery mode. set DEVICEID variable to the device ID. abort when not found.
	# 2. mount system and data partitions read-only, set up adb portforward and create destdir
	# 3. check free space on /cache, exit if less blocks than 20MB free
	# 4. push required tools to device in /cache
	# 5 for partitions boot recovery misc:
	# 5a get md5sum for content of current partition on the device (no data transfered)
	# 5b while MD5sum comparison is incorrect (always is the first time):
	# 5b1 dump current partition to a netcat session
	# 5b2 start local netcat to dump image to current dir
	# 5b3 compare md5sums of dumped data with dump in current dir. if correct, contine, else restart the loop (6b1)
	# 6 for partitions system data:
	# 6a get md5sum for tar of content of current partition on the device (no data transfered)
	# 6b while MD5sum comparison is incorrect (always is the first time):
	# 6b1 tar current partition to a netcat session
	# 6b2 start local netcat to dump tar to current dir
	# 6b3 compare md5sums of dumped data with dump in current dir. if correct, contine, else restart the loop (6b1)
	# 6c if i'm running as root:
	# 6c1 create a temp dir using either tempdir command or the deviceid in /tmp
	# 6c2 extract tar to tempdir
	# 6c3 invoke mkyaffs2image to create the img
	# 6c4 clean up
	# 7. remove tools from device /cache
	# 8. umount system and data on device
	# 9. print success.


	RECOVERY=foo

	echo "nandroid-mobile v2.1"
	mkfstab.sh > /etc/fstab

	if [ "$1" == "" ]; then
	echo "Usage: $0 {backup\|restore} [/path/to/nandroid/backup/]"
	echo "- backup will store a full system backup on /sdcard/nandroid"
	echo "- restore path will restore the last made backup for boot, system, recovery and data"
	exit 0
	fi

	case $1 in
	backup)
	mkyaffs2image=`which mkyaffs2image`
	if [ "$mkyaffs2image" == "" ]; then
	mkyaffs2image=`which mkyaffs2image-arm-uclibc`
	if [ "$mkyaffs2image" == "" ]; then
	echo "error: mkyaffs2image or mkyaffs2image-arm-uclibc not found in path"
	exit 1
	fi
	fi
	dump_image=`which dump_image`
	if [ "$dump_image" == "" ]; then
	dump_image=`which dump_image-arm-uclibc`
	if [ "$dump_image" == "" ]; then
	echo "error: dump_image or dump_image-arm-uclibc not found in path"
	exit 1
	fi
	fi
	break
	;;
	restore)
	flash_image=`which flash_image`
	if [ "$flash_image" == "" ]; then
	flash_image=`which flash_image-arm-uclibc`
	if [ "$flash_image" == "" ]; then
	echo "error: flash_image or flash_image-arm-uclibc not found in path"
	exit 1
	fi
	fi
	unyaffs=`which unyaffs`
	if [ "$unyaffs" == "" ]; then
	echo "error: unyaffs not found in path"
	exit 1
	fi
	break
	;;
	esac

	# 1
	RECOVERY=`cat /proc/cmdline \| grep "androidboot.mode=recovery"`
	if [ "$RECOVERY" == "foo" ]; then
	echo "error: not running in recovery mode, aborting"
	exit 1
	fi
	if [ ! "`id -u 2>/dev/null`" == "0" ]; then
	if [ "`whoami 2>&1 \| grep 'uid 0'`" == "" ]; then
	echo "error: must run as root, aborting"
	exit 1
	fi
	fi


	case $1 in
	restore)
	ENERGY=`cat /sys/class/power_supply/battery/capacity`
	if [ "`cat /sys/class/power_supply/battery/status`" == "Charging" ]; then
	ENERGY=100
	fi
	if [ ! $ENERGY -ge 30 ]; then
	echo "Error: not enough battery power"
	echo "Connect charger or USB power and try again"
	exit 1
	fi
	RESTOREPATH=$2
	if [ ! -f $RESTOREPATH/nandroid.md5 ]; then
	echo "error: $RESTOREPATH/nandroid.md5 not found, cannot verify backup data"
	exit 1
	fi
	umount /system 2>/dev/null
	umount /data 2>/dev/null
	mount -o rw /system \|\| FAIL=1
	mount -o rw /data \|\| FAIL=2
	case $FAIL in
	1) echo "Error mounting system read-write"; umount /system /data /cache; exit 1;;
	2) echo "Error mounting data read-write"; umount /system /data /cache; exit 1;;
	esac

	echo "Verifying backup images..."
	CWD=$PWD
	cd $RESTOREPATH
	md5sum -c nandroid.md5
	if [ $? -eq 1 ]; then
	echo "error: md5sum mismatch, aborting"
	exit 1
	fi
	for image in boot; do
	echo "Flashing $image..."
	$flash_image $image $image.img
	done
	curdir=$(pwd)
	for image in system data cache; do
	echo "Unpacking $image..."
	cd /$image
	rm -rf *
	unyaffs $curdir/$image.img
	cd $curdir
	done
	sync
	umount /system
	umount /data
	echo "Restore done"
	exit 0
	;;
	backup)
	break
	;;
	*)
	echo "Usage: $0 {backup\|restore} [/path/to/nandroid/backup/]"
	echo "- backup will store a full system backup on /sdcard/nandroid"
	echo "- restore path will restore the last made backup for boot, system, recovery and data"
	exit 1
	;;
	esac

	# 2.
	echo "mounting system and data read-only, sdcard read-write"
	umount /system 2>/dev/null
	umount /data 2>/dev/null
	umount /sdcard 2>/dev/null
	mount -o ro /system \|\| FAIL=1
	mount -o ro /data \|\| FAIL=2
	mount /sdcard \|\| mount /dev/block/mmcblk0 /sdcard \|\| FAIL=3
	case $FAIL in
	1) echo "Error mounting system read-only"; umount /system /data /sdcard; exit 1;;
	2) echo "Error mounting data read-only"; umount /system /data /sdcard; exit 1;;
	3) echo "Error mounting sdcard read-write"; umount /system /data /sdcard; exit 1;;
	esac

	TIMESTAMP="`date +%Y%m%d-%H%M`"
	BASEDIR=/sdcard/nandroid
	if [ !-z "$2" ]; then
	BASEDIR=$2
	fi

	DESTDIR=$BASEDIR/$TIMESTAMP
	if [ ! -d $DESTDIR ]; then
	mkdir -p $DESTDIR
	if [ ! -d $DESTDIR ]; then
	echo "error: cannot create $DESTDIR"
	umount /system 2>/dev/null
	umount /data 2>/dev/null
	umount /sdcard 2>/dev/null
	exit 1
	fi
	else
	touch $DESTDIR/.nandroidwritable
	if [ ! -e $DESTDIR/.nandroidwritable ]; then
	echo "error: cannot write to $DESTDIR"
	umount /system 2>/dev/null
	umount /data 2>/dev/null
	umount /sdcard 2>/dev/null
	exit 1
	fi
	rm $DESTDIR/.nandroidwritable
	fi

	# 3.
	echo "checking free space on sdcard"
	FREEBLOCKS="`df -k /sdcard\| grep sdcard \| awk '{ print $4 }'`"
	# we need about 130MB for the dump
	if [ $FREEBLOCKS -le 130000 ]; then
	echo "error: not enough free space available on sdcard (need 130mb), aborting."
	umount /system 2>/dev/null
	umount /data 2>/dev/null
	umount /sdcard 2>/dev/null
	exit 1
	fi



	if [ -e /dev/mtd/mtd6ro ]; then
	echo -n "Dumping splash1 from device over tcp to $DESTDIR/splash1.img..."
	dd if=/dev/mtd/mtd6ro of=$DESTDIR/splash1.img skip=19072 bs=2048 count=150 2>/dev/null
	echo "done"
	sleep 1s
	echo -n "Dumping splash2 from device over tcp to $DESTDIR/splash2.img..."
	dd if=/dev/mtd/mtd6ro of=$DESTDIR/splash2.img skip=19456 bs=2048 count=150 2>/dev/null
	echo "done"
	fi


	# 5.
	for image in boot recovery misc; do
	# 5a
	DEVICEMD5=`$dump_image $image - \| md5sum \| awk '{ print $1 }'`
	sleep 1s
	MD5RESULT=1
	# 5b
	echo -n "Dumping $image to $DESTDIR/$image.img..."
	ATTEMPT=0
	while [ $MD5RESULT -eq 1 ]; do
	let ATTEMPT=$ATTEMPT+1
	# 5b1
	$dump_image $image $DESTDIR/$image.img
	sync
	# 5b3
	echo "${DEVICEMD5} $DESTDIR/$image.img" \| md5sum -c -s -
	if [ $? -eq 1 ]; then
	true
	else
	MD5RESULT=0
	fi
	if [ "$ATTEMPT" == "5" ]; then
	echo "fatal error while trying to dump $image, aborting"
	umount /system
	umount /data
	umount /sdcard
	exit 1
	fi
	done
	echo "done"
	done

	# 6
	for image in system data cache; do
	# 6a
	echo -n "Dumping $image to $DESTDIR/$image.img..."
	$mkyaffs2image /$image $DESTDIR/$image.img
	sync
	echo "done"
	done


	# 7.
	echo -n "generating md5sum file..."
	CWD=$PWD
	cd $DESTDIR
	md5sum *img > nandroid.md5
	cd $CWD
	echo "done"

	# 8.
	echo "unmounting system, data and sdcard"
	umount /system
	umount /data
	umount /sdcard

	# 9.
	echo "Backup successful."