http://forum.xda-developers.com/galaxy-s2/general/ref-unpacking-repacking-stock-rom-img-t1081239

OP jazzor

jazzor

View Profile View Forum Posts

16th May 2011, 07:42 AM   |  #1

OP Member

Thanks Meter: 140

51 posts

Join Date:Joined: Mar 2010

As most of you are aware, the stock rom tarball is comprised of several .img files which don't seem to be of any file system format and it is difficult at first to see what is inside these files without flashing via Odin.
Well, thanks to fguy, this thread http://forum.xda-developers.com/show....php?t=1054836 provided me the necessary inspiration to investigate just exactly what are these img made of.
Hopefully, this will allow easy removal of all the Samsung junk, deodexing, rooting etc etc without going through adb.
As it turns out, they are simply sparse ext4 images, and the AOSP source tree already contains the necessary utilities to both unpack and repack these img files via "ext4_utils" in system/extras (https://android.googlesource.com/pla...system/extras/)
For your convenience, I have provided a repackage of the source code for ext4_utils with a simple Makefile, for keen developers to make the necessary tools for unpacking and repacking the stock img files. Making these tools requires a linux development environment, which is beyond the scope of this topic.
To make the tools, simple extract the attached source code and type "make".
To unpack the .img file:

Code:

./simg2img factoryfs.img output.img

To view the contents of .img file:

Code:

mkdir tempdir; mount -o loop output.img tempdir

To repack .img file:

Code:

./mkuserimg.sh -s /some/directory/with/files ./factoryfs_custom.img ext4 ./temp 512M

As I do not have Odin at the moment, I am not able to test the repacked files can be reflashed successfully. I will test this shortly.

UPDATE

I have just tested repacking the stock factoryfs.img. It so happens that the original ext4_utils does not properly preserve permissions on the new ext4 image. I have made a slight modification to the source and reuploaded the zip.

You can now successfully unpack, remove and change the stock apps, root and modify the stock image using instructions above!!

I hope this will help people create their own custom roms.

UPDATE 27th MAY FOR GALAXY S4 TESTING (i9500 i9505)

A few people have messaged me asking why these tools do not work for the new Galaxy S4. Unfortunately I do not have a Galaxy S4 so I can not test any of these utilities. HOWEVER, it seems there has been quite a bit of updates by Google in the ext4_utils package. I have updated the sources according to 4.2.2 which is the latest version of the tools. I must stress that I DO NOT HAVE A GALAXY S4 TO TEST so don't be expecting miracles. In any case I have uploaded the new code now. As it was before, I have provided a MAKEFILE and you simply type "make" in order to build the tools. They are contained in ext4_utils_new.zip.

Thanks for your support guys. And I do apologize for replying late to my inbox...

Update 9th November 2014

Thanks to qwerty_7564 for providing the fixes for cygwin compilation.

Ext4 utils new still missing link arguments to compile. Investigating. I will update the sources to that of the 4.3 branch later.

Update 3rd December 2014

I have updated the tools to 4.3 branch. Note that no attempts has been made to make this compatible with cygwin as I have no cygwin to test.

As I have mentioned earlier, I do not have a newer samsung device to test any of these files, use at your own discretion. The new files are in ext4_utils_r4.3.tar.gz and is based on the jb release 2.0.0 branch.

Attached Files

ext4_utils_cygwin_fixed.zip - [Click for QR Code] (59.8 KB, 4026 views)

ext4_utils_new_cygwin_fixed.tar.gz - [Click for QR Code] (64.9 KB, 3289 views)

ext4_utils_r4.3.tar.gz - [Click for QR Code] (110.0 KB, 5732 views)

Last edited by jazzor; 4th December 2013 at 01:14 AM. Reason: updated to 4.3

 

 

如果编译遇到下面错误:

borou@borou-casa:~/discoduro/BASURILLA/GSII/Varios/ext4_utils$ make

gcc -I. -DANDROID -c make_ext4fs.c

gcc -I. -DANDROID -c make_ext4fs_main.c

gcc -I. -DANDROID -c ext4_utils.c

gcc -I. -DANDROID -c allocate.c

gcc -I. -DANDROID -c backed_block.c

gcc -I. -DANDROID -c output_file.c

output_file.c:25:18: fatal error: zlib.h: No existe el fichero o el directorio

compilation terminated.

make: *** [output_file.o] Error 1

apt-get install zlib1g-dev

Unpacking and repacking stock rom .img files的更多相关文章

  1. 如何解包,编辑,重新打包boot images

    HOWTO: Unpack, Edit, and Repack Boot Images http://forum.xda-developers.com/showthread.php?t=443994 ...

  2. [How to] ROOT, Backup & Flash (MTKDroidTools, Spflashtool, CWM)

    这是一篇来自xda论坛的文章,写得很详细,很有用,以下是原文: Hi This is a guide to ROOT, backup and flash your MTK65xx or Other d ...

  3. How-to: Tune Your Apache Spark Jobs (Part 1)

    Learn techniques for tuning your Apache Spark jobs for optimal efficiency. When you write Apache Spa ...

  4. 2019-1-7Xiaomi Mi5 刷全球版MIUI教程

    2019-1-7Xiaomi Mi5 刷全球版MIUI教程 mi5 教程 小书匠  欢迎走进zozo的学习之旅. 前言 固件下载 刷机 刷recovery,root 试用体验 其他参考 前言 机器是老 ...

  5. Spark的job调优(1)

    本文翻译之cloudera的博客,本系列有两篇,第二篇看心情了 概论 当我们理解了transformation,action和rdd后,我们就可以写一些基础的spark的应用了,但是如果需要对应用进行 ...

  6. HTTPS数据包抓取的可行性分析

    HTTPS数据包抓取的可行性分析 相信只要是从事软件开发, 多多少少都会涉及到数据包的抓取.常见的有网页数据抓取(即网页爬虫),应用程序数据包抓取等.网页数据抓取比较简单, 在chrome下可以非常方 ...

  7. 一加5安卓P刷入twrp的recovery

    本文介绍的方法属于普适性的一般方法,比网上的各种工具箱会繁琐.但是工具箱不一定一直会更新(之前一加论坛的刷机工具箱已经停止更新了,估计是作者不用一加5了吧,毕竟已经好几年的手机了).并且如果你手机更新 ...

  8. Android开发学习---android下的数据持久化,保存数据到rom文件,android_data目录下文件访问的权限控制

    一.需求 做一个类似QQ登录似的app,将数据写到ROM文件里,并对数据进行回显. 二.截图 登录界面: 文件浏览器,查看文件的保存路径:/data/data/com.amos.datasave/fi ...

  9. android recovery模式及ROM制作

    转自android recovery模式及ROM制作 1.总述 为了方便客户日后的固件升级,本周研究了一下android的recovery模式.网上有不少这类的资料,但都比较繁杂,没有一个系统的介绍与 ...

随机推荐

  1. 每日英语:Asia Has World's Biggest Pay Gap, Study Finds

    In Asia, middle managers such as department heads make more than 14 times as much as operational emp ...

  2. android 获取屏幕高度和宽度 的方法

    我们需要获取Android手机或Pad的屏幕的物理尺寸,以便于界面的设计或是其他功能的实现.下面就介绍讲一讲如何获取屏幕的物理尺寸 下面的代码即可获取屏幕的尺寸.    在一个Activity的onC ...

  3. GPIO—位带操作

    GPIO—位带操作本章参考资料:< STM32F4xx 中文参考手册>存储器和总线构架章节. GPIO 章节,< Cortex®-M4 内核编程手册> 2.2.5 Bit-ba ...

  4. [Linux]gcc/libc/glibc

    转自:http://blog.csdn.net/weiwangchao_/article/details/16989713 1.gcc(gnu collect compiler)是一组编译工具的总称. ...

  5. linux -- camera shot 拍照功能

    #include <stdio.h> #include <string.h> #include <errno.h> #include <stdlib.h> ...

  6. wifi设置

    1 编辑/etc/init.d/wifi #!/bin/sh case "$1" in start)     echo /sbin/mdev > /proc/sys/kern ...

  7. keep learning

    fueling people’s creativity  助长了人们的创造力,燃烧了人们的激情

  8. thinkphp 设置 支持模块多组

    正常的访问地址是:localhost/项目名/index.php/Admin/Index/index 模块分组之后呢:localhost/项目名/index.php/Admin/System/Inde ...

  9. HTML和CSS的盒子模型(Box model)

    本文作为属性篇的最后一篇文章, 将讲述HTML和CSS的关键—盒子模型(Box model). 理解Box model的关键便是margin和padding属性, 而正确理解这两个属性也是学习用css ...

  10. SQL on Hadoop系统的最新进展(1)

    转自:http://blog.jobbole.com/47892/ 为什么非要把SQL放到Hadoop上? SQL易于使用.那为什么非得基于Hadoop呢?the robust and scalabl ...