[Elftoolchain-developers] extract binary data from elf file

[massimiliano c. <mas...@po...>]

Hallo,

first of all sorry if this list is not the right place to post this 
question. In this case please tell me where can I find support.

I need write a program that extract binary data from an elf file.
The result should be the same using "objcopy -O binary".

I'm using libelf, and I read the doc ("libelf by example").
I am able to list segmets and sections in an elf file, and I can extract 
data from sections, but I don't know which section I neet to take into 
account. For example section like .text, and not .bss.
How can I choose the segments to extract? Or I need sections? In this 
case which sections?

best regards

Max