Remove Prelink

[Antoine]

Hi,
I'm the newbbie of the group

I heard and I read a lot of think about android prelink, But I want to
remove prelink because
I have to implement Address space layout randomization (ASLR) with
mmap() on android

so when there is prelink and ASLR android dont boot, he don't find any
lib's
I tried to put LOCAL_PRELINK_MODULE := false in every android.mk libs
but it isn't work
I found the apriori file that make the prelink with prelinkmap.c and
prelink-linux-arm.map

The problem is I don't found where the main.c of apriori is called in
android, I dont clearly understand how works prelink on android.

Can you help me please

regards
Antoine

[梁亦飞]

Hi Antoine,
I'm not sure how exactly apriori be called, but i do know the simplest
way to disable prelink is
change the TARGET_PRELINK_MODULE in build/core/config.mk into false .

If you want to digg out the whole procedure, i suggest you check the
transform-to-prelinked command in definition.mk in build/core
directory.

[梁亦飞]

Hi Antonie,

I am not sure how exactly apriory be called, but i suggest you check
the transform-to-prelinked command which defined
in build/core/definition.mk.

The simplest way to disable the prelink function is set the
TARGET_PRELINK_MODULE in build/core/config.mk as false,
you can try it.

On 7月1日, 下午9时08分, Antoine <stericsson.cry...@gmail.com> wrote:

[Antoine]

So for now I've shuttdown some error controls, put
LOCAL_PRELINK_MODULE := false everywere and remove the -
DSUPPORT_ANDROID_PRELINK_TAG and -DPRELINK on every Android.mk (libs,
linker, soslim)

And it's work android boot ..... not very fine cause android is
blocked on the boot
but it's the first step.

Now I have to realy understand how soslim and linker works together,
if someone know a little about that..
Antoine

[Antoine]

thanks for your answers
I'm gonna try this
regards
Antoine
>

[Antoine]

[Antoine]

Yeah it's work

in config.mk => LOCAL_PRELINK_MODULE:=false
definition.mk => comment tronform_to_prelinked
and remove -DSUPPORT_ANDROID_PRELINK_TAG in every android.mk if
apriori and soslim

it's work but I have still some probleme with the ALSA hardware and
alsa lib
I put alsa generic audio it's work but without sound but it's not a
huge issue

thanks for your help
regards
Antoine