Re: [PATCH v2] futex: mark get_robust_list as deprecated

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richard -rw- weinberger <richard.weinberger@xxxxxxxxx> writes:

> On Fri, Mar 23, 2012 at 8:08 PM, Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>> Notify get_robust_list users that the syscall is going away.
>>
>> Suggested-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
>> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
>> ---
>
> I'm using this system call in an application and noticed that's marked
> as deprecated now.
> My application collects all kind of information from crashing programs.
> It's installed in /proc/sys/kernel/core_pattern.
>
> If program X is crashing it executes get_robust_list(X) to get the
> address of the robust list
> and reads the list from /proc/X/mem.
>
> Is there another way to get the robust list from another program (by it's pid)?

The folks doing checkpoint/restart claim to not need this, so there
might be a way either that or they just haven't hit this problem yet.

What you are doing sounds like a reasonable use of get_robust_list to me.

Eric
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