[CRIU] Pipe Data Dump

[Alexander Mihalicyn]

Hello,

yes, you are right. It's because dump_one_pipe_data called from
dump_one_pipe. But dump_one_pipe called when we dump each file
descriptor even if it associated with the same pipe in internal
(kernel) representation.

Regards,
Alex.

On Thu, Jun 25, 2020 at 9:29 PM Abhishek Vijeev
<abhishek.vijeev at gmail.com> wrote:
>
> Hi,
>
> I had a question about code that dumps pipe data.
>
> Why does CRIU have to check whether a pipe's data has already been dumped?
> (https://github.com/checkpoint-restore/criu/blob/criu-dev/criu/pipes.c#L415)
> Is it because a pipe has 2 file descriptors (for read and write)
> associated with it, and one of these might have been dumped earlier?
>
> The primary reason I ask this question is because I'd like to know
> whether this is something I must account for while dumping BPF map
> data.
>
> Thank you,
> Abhishek Vijeev.
> _______________________________________________
> CRIU mailing list
> CRIU at openvz.org
> https://lists.openvz.org/mailman/listinfo/criu