Function create_child

ccan/ccan/ptr_valid/ptr_valid.c:202–237

}

static bool create_child(struct ptr_valid_batch *batch)
{
	int outpipe[2], inpipe[2];

	if (pipe(outpipe) != 0)
		return false;
	if (pipe(inpipe) != 0)
		goto close_outpipe;

	fflush(stdout);
	batch->child_pid = fork();
	if (batch->child_pid == 0) {
		close(outpipe[1]);
		close(inpipe[0]);
		run_child(outpipe[0], inpipe[1]);
	}

	if (batch->child_pid == -1)
		goto cleanup_pid;

	close(outpipe[0]);
	close(inpipe[1]);

	batch->to_child = outpipe[1];
	batch->from_child = inpipe[0];
	return true;

cleanup_pid:
	batch->child_pid = 0;
	close_noerr(inpipe[0]);
	close_noerr(inpipe[1]);
close_outpipe:
	close_noerr(outpipe[0]);
	close_noerr(outpipe[1]);
	return false;
}

static bool check_with_child(struct ptr_valid_batch *batch,
			     const void *p, size_t size, bool is_write)