Re: Understanding the internals of core dump generation

[Manish Katiyar <mkatiyar@xxxxxxxxx>]

On Wed, Feb 4, 2009 at 2:55 PM, Indraneel Mukherjee <indro.ml@xxxxxxxxx> wrote:
> Hi All,
> I am looking to understand how core dumps are generated. I'm able to
> generate application core dumps. Now i want to understand the internals of
> core dump generation.
>
> 1. What happens internally when a segfault occurs?

That depends on the application to handle it. It is just another
pagefault with the reason.

>
> 2. Who actually stores the core dump?
>
> 3. How is the core dump file created?

Probably you need to look at the structure :- linux_binfmt

Or you can start reading the code from elf_core_dump() for elf formats
or aout_core_dump() for a.out format files.


Thanks -
Manish
>
> Any pointers to understand these or the related code will be much
> appreciated.
>
> TIA,
> Indro
>

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