static bool check_with_child(struct ptr_valid_batch *batch,
const void *p, size_t size, bool is_write)
{
char ret;
if (!child_alive(batch)) {
if (!create_child(batch))
return false;
}
if (write(batch->to_child, &p, sizeof(p))
+ write(batch->to_child, &size, sizeof(size))
+ write(batch->to_child, &is_write, sizeof(is_write))
!= sizeof(p) + sizeof(size) + sizeof(is_write)) {
finish_child(batch);
errno = EFAULT;
return false;
}
if (read(batch->from_child, &ret, sizeof(ret)) != sizeof(ret)) {
finish_child(batch);
errno = EFAULT;
return false;
}
return true;
}
void ptr_valid_batch_end(struct ptr_valid_batch *batch)
{
if (child_alive(batch))
finish_child(batch);
free(batch->maps);
}
