[CRIU] [PATCHv4 3/4] libcriu: add criu_dump_me() and libcriu header

[Pavel Emelyanov]

On 09/03/2013 06:44 PM, Ruslan Kuprieiev wrote:
> criu_dump_me() can be used by program to dump itself.
> Program need to call criu_allocate_args() to prepare arguments and then 
> it can set them using criu_set* functions. criu_set* functions are used 
> instead of give user access to arguments itself, so user will not mess 
> with protobuf. libcriu.h is to be used by user program.
> 
> 
> +	if (send_fd(socket_fd, NULL, 0, args->images_dir_fd) == -1) {
> +		perror("Can't send file descriptor");
> +		return CRIU_DUMP_FAIL;
> +	}

Oh, and one more thing. This args->images_dif_fd is totally useless in the
dump args _if_ we send this fd, since on serivice side, this value would
change.

But, it looks like sending a file descriptor can only easily be done in C
code, but in e.g. Python or Java this is painful, so we probably would have
to reconsider the way we send images dir fd to the service (need more
thinking).