> but of course plan9 makes it a file system instead of some RPC. Actually, Plan 9 does IPC via 9P, the RPC based file system protocol. The protocol serves a t

> but of course plan9 makes it a file system instead of some RPC. Actually, Plan 9 does IPC via 9P, the RPC based file system protocol. The protocol serves a tree of named byte addressable objects which are composable per process. The Plan 9 kernel is a VFS multiplexer. It *only* speaks 9P. All disk file systems,e.g. ext4, are served via user space micro services the bell labs people called file servers. Unlike clunky Unix and it's copies there are no special files or character files nor ioctl(). It's all via the foundational concept of how people organize resources into "files" and folders (directories) via path names. All this is transparent over the network by default. The reality is the OS is a very portable light weight channel based container host, the container being the process. Each with it's own namespace which means it's own collection of mounted resources composed of 9P mounts and binds organized into a tree of named objects. Those objects are protected by Unix-like permissions: user/group/everyone-RWX served from as m yet another micro service using the same protocol. A process can rfork() more with flags to share resources and control it's file system view to only what the child container needs to see. Those containers then fork off more. You can keep firing off boxes with CPU and RAM and whatever what is hanging off via pxe and instantly have access to that compute and resources. 9P is architecture independent so file servers running on arm are no different than any other arch like x86, mips, risc-v, etc. anyone can mount any other hardware. It's a light weight cloud ready micro service host that was stated in the 80's by the same people who made Unix and c. It's friggin wild. I highly encourage people try to really understand how it works. It's pretty damn eye opening and refreshing. It sorta blew my mind when I saw the process as the container that can fork off more and more with the ability to control the system view of each one. And you can understand the code. Like all of it.