how to get the file descriptor of the memory object?

[blueardour]

I emloyed:
private_handle_t * gralloc_handle = reinterpret_cast<private_handle_t*>(const_cast<native_handle*>(graphicbuffer->getNativeBuffer()->handle)); int fd = gralloc_handle->fd;
to get the file descriptor

But it seemed to be wrong and always returned 0x00

[sergeivolodin]

Are all previous calls successful? Just from the code, it's hard to understand which part failed. I would check pointers for graphicbuffer then for graphicbuffer->getNativeBuffer() and then for graphicbuffer->getNativeBuffer()->handle