> By now it wouldn't be surprising if it doesn't, and handles block storage itself bypassing the kernel. So you imagine a process somehow granted the ability t

> By now it wouldn't be surprising if it doesn't, and handles block storage itself bypassing the kernel. So you imagine a process somehow granted the ability to bypass the kernel and do disk i/o directly from user space. Interesting concept, but I would consider that surprising if true. Bypassing filesystems is entirely likely, but that has nothing to do with bypassing POSIX (e.g. open/read/write/close/ioctl).