This is for people who build AOSP or any roms from source for general public or for personal use. Koushik Dutta has given quite a good explanation here but some more things are needed to get it fully working. You should know what you are doing before you read ahead. I am not responsible if you mess up your device or any of your personal belongings
Step 1: Add the required packages into your source:
You need to add the Superuser related repos from cyanogenmod into your rom source. This can be done using a local manifest. Make a local manifest by any name say su.xml and place it in .repo/local_manifests/su.xml. If the "local_manifests" folder doesn't exists in .repo then make one. Copy paste the following lines in su.xml
Code:
Step 2: Cherry-pick commits
There are many commits to refer. I would link some to you. You can cherry-pick, for example,this or this. You can refer any of such commits. Cherry-pick is to be done in packages/apps/Settings. There might be conflicts in Android.mk & proguard.flags. Just compare the files from the ones in the above linked commits and fix them.
Step 3 : Add some required flags to device make file
To make Superuser to go under Settings, the most important flag needed is this :
Code:
SUPERUSER_EMBEDDED := trueWithout this, superuser won't get embedded into Settings.apk. You can add this flag in any ".mk" file. I have added it under device/lge/hammerhead/device.mk. Some build.prop lines are also needed to get root working. Also you need to make the Superuser and su binary packages to be built. All the lines needed are summarized as follows:
Code:
# SU Support
SUPERUSER_EMBEDDED := true
PRODUCT_PACKAGES += \
Superuser \
su
PRODUCT_PROPERTY_OVERRIDES += \
persist.sys.root_access=3
# Enable ADB authentication
PRODUCT_PROPERTY_OVERRIDES += \
ro.adb.secure=1Add all of them on the same location device/lge/hammerhead/device.mk.
Step 4[MOST IMPORTANT] : Import init.superuser.rc in init.rc or similar file.
People do everything properly upto step 3 but they never get superuser to work properly. When you try opening any root app, ADB gives the following error :
Code:
D/su ( 2529): su invoked.
D/su ( 2529): starting daemon client 10019 10019
E/su ( 2529): connect failed with 2: No such file or directorysu daemon is started by init.superuser.rc. You need to import it in init.rc or in this case init.hammerhead.rc or any similar init file like this :
Code:
import init.hammerhead.usb.rc
import init.superuser.rc
on early-init
mount debugfs debugfs /sys/kernel/debug
chown system system /sys/kernel/debug/kgsl/procIf you don't do this, system won't know that a file "init.superuser.rc" even exists. Hence, the daemon fails, failing root access eventually
DONE!!!! Just build the rom as you normally do and you have # Superuser under Settings. I hope it was clear enough. I have tried to add everything I recollect but if you find anything missing then please let me know. Thank you!!!! And enjoy coding
I hope it was clear enough. I have tried to add everything I recollect but if you find anything missing then please let me know. Thank you!!!! And enjoy coding
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