Android 9 partition repack tool!

[BowerR64]

OHHHH, i had no idea. i just searched "todays posts" and thought i found something neat lol


sorry

[lc01]

I know some Linux but haven't done any mods before, so all the experts please bear with me. What I want to do is to modify the SLIMBOX firmware (https://forum.xda-developers.com/and...imbox-t4152049) and add a few apps of my own. I read README.md a few times (using Google Translate) and this is my understanding of what I need to do:

1. Place the firmware file as afck/ingredients/aml_upgrade_package.img.
2. Run 'make img-unpack' to extract the partition files.
3. Run 'make mod-unpack' to extract all files.
4. Add my apks to appropriate folders under system or vendor.
5. Run 'make mod-system' and/or 'make mod-vendor' to repack system and/or vendor partitions.
6. Run 'make ubt' to repack partitions into img.

For a test, I don't want to make any changes. I simply want to unpack and repack to see if the new img works properly. After running 'make img-unpack', I can see all the partition files created under afck/out/amlogic/device/1-2g/img-unpack, so so far so good. But after running 'make mod-unpack', I don't see the unpacked files. The last command 'rm -rf out/amlogic/device/1-2g/img-ubt/*' seemed to have deleted all the unpacked files under img-ubt. So I am now a bit lost on what to do next.

Using another tool, I was able to unpack the img into a file structure that includes system folder, vendor folder, file_contexts file, system_statfile.txt file, and vendor_statfile.txt file. If someone could point me in the right direction on how to repack the file structure back into an img file using the bc-tool, that would be great! Thank you all, and your help is much appreciated.

[bumerc]

@Ic01
You are reading inattentively - step 2 is wrong and only applies to Android 8 project. Step 6 is wrong and only applies to Android 8 project. The img-ubt directory has nothing to do with the Android 9 project and is cleaned up after the image is extracted; all extracted partitions are located in bc-tool/<partition>

[james739]

How do I pre set default app shortcuts for ATV in the rom

[bumerc]

Please only the questions regarding bc-tool, the intervention in the SystemUI has nothing to do with this..

[klobes]

Hou to fix that?
img is https://drive.google.com/file/d/1F5Q...pEp80rdpR/view
android 9
sistem is ubuntu 18.04


ubuntu:~/afck$ sudo make mod-product
mkdir -p "bc-tool/stamp"
cd bc-tool/product && ./build
check source folder...
ok

product/lost+found is already removed!
previous build doesn't exist

dtb check ok!
calculate IMG size
Error at '/partitions/product': FDT_ERR_BADMAGIC
size: 0

building...
mkdir: cannot create directory ‘out’: File exists

create ext4 fs...
#################
0+0 records in
0+0 records out
0 bytes copied, 0.000298639 s, 0.0 kB/s
mke2fs 1.43.3 (04-Sep-2016)
mke2fs: Device size reported to be zero. Invalid partition specified, or
partition table wasn't reread after running fdisk, due to
a modified partition being busy and in use. You may need to reboot
to re-read your partition table.

set android_sparse flag for e2fsdroid
#################
mke2fs 1.43.3 (04-Sep-2016)
mke2fs: invalid blocks '0' on device 'out/product.PARTITION'
compile file_contexts.bin

create a sparse img...
##################
./build: line 89: 8307 Segmentation fault sudo contrib/e2fsdroid -T $TIME -B out/$PART.map -S out/$SLCB -f $PART -a /$PART out/$OUT
build/mod.mak:61: recipe for target 'bc-tool/stamp/.stamp.mod-product' failed
make: *** [bc-tool/stamp/.stamp.mod-product] Error 1

[bumerc]

klobes

post _aml_dtb.PARTITION here, the link above is not available..

[klobes]

hi the file are on link
https://filebin.net/pksw1st3wz13gm4r

[bumerc]

hi the file are on link
https://filebin.net/pksw1st3wz13gm4r

Where did you get this DTB partition from? It does contain the multi-dtb header, but not a single single dtb. Use unchanged original dtb partition

[klobes]

when do mod-unpack after that not get DTB partitioon , and after make mod-product it generate by self.

[bumerc]

when do mod-unpack after that not get DTB partitioon , and after make mod-product it generate by self.

1. After make mod-unpack the _aml_dtb.PARTITION is copied into the bc-tool directory as a DTB file (unchanged).
2. After make mod-<partition> the build script checks the DTB header and selects between 3 possible DTB variants - single-dtb, multi-dtb, single- or multi dtb gzipped.
In the case of a multi-dtb, the script cuts off the DTB header so that the information about the partition size can be extracted via ftdget.
The original/unchanged DTB file is saved during this process (regardless of the dtb variant) as a DT end file and is used as a template for fdtget.

Because of a faulty DTB file in your case, the fdtget outputs "FDT_ERR_BADMAGIC" because no valid dt_header_magic (0xedfe0dd0) was found.
Where did you download this Android ROM? Post the link..

[klobes]

Link of the link is : https://drive.google.com/file/d/1F5Q...pEp80rdpR/view
The DTB is singel file and format is gz
in post is the link of img
The android is A95x_f3_air
procesor is s905x3
Ram 2gb
Rom 16Gb

[SteampunkJedi]

I've been having an issue when I use make mod-system, this comes up:

mkdir -p "bc-tool/stamp"
cd bc-tool/system && ./build
check source folder...
ok

remove system/lost+found
previous build doesn't exist

multi-dtb detected...
92+0 records in
92+0 records out
188416 bytes (188 kB, 184 KiB) copied, 0.00121957 s, 154 MB/s
calculate IMG size
size: -524288

building...

create ext4 fs...
#################
dd: invalid number: ‘-524288’
check uuid hash
tune2fs: No such file or directory while trying to open out/system.PARTITION
Couldn't find valid filesystem superblock.
Filesystem UUID:
Directory Hash Seed:

set android_sparse flag...
##################
contrib/mke2fs: invalid option -- '5'
Usage: mke2fs [-c|-l filename] [-b block-size] [-C cluster-size]
[-i bytes-per-inode] [-I inode-size] [-J journal-options]
[-G flex-group-size] [-N number-of-inodes] [-d root-directory]
[-m reserved-blocks-percentage] [-o creator-os]
[-g blocks-per-group] [-L volume-label] [-M last-mounted-directory]
[-O feature[,...]] [-r fs-revision] [-E extended-option[,...]]
[-t fs-type] [-T usage-type ] [-U UUID] [-e errors_behavior][-z undo_file]
[-jnqvDFSV] device [blocks-count]
generate fs_config
compile file_contexts.bin

create a sparse img...
##################
./build: line 109: 13724 Segmentation fault sudo contrib/e2fsdroid -T $TIME -C out/$FSC -B out/$PART.map -S out/$SLCB -f $PART -a / out/$OUT
make: *** [build/mod.mak:62: bc-tool/stamp/.stamp.mod-system] Error 1

I have no clue where it's getting this negative number as its image size. I'm using the stock GT King ROM:
https://drive.google.com/file/d/1XG4...2WvEoZA3v/view

I have no issues when I use make mod-vendor though.

[bumerc]

SteampunkJedi
Install this update on the pre-installed bc-tool..

download:
update_part_size_fix.tar.xz

install update:

tar xvJf update_part_size_fix.tar.xz -C ~/afck

klobes your dtb partition is encrypted, copy meson1.dtb (afck /out/amlogic/device/1-2g/img-unpack/meson1.dtb) to afck/bc-tool/ and rename this file to DTB, run make mod- <partition>. I will add support for this in the next update.

[jblsound]

bumerc


???????download:
update_part_size_fix.tar.xz

The link is not working, can you re-upload it? I have the same problem with the negative image file size.

Thank you