C System API for Memory Files

Memory Files

Memory files are for all purposes regular files, except they are only stored in memory. The following should be added to the various system call man pages:

open(2)

O_MEM

Opens a memory file. If the file referred to by pathname exists, and is not a memory file, the open fails with ENXIO.

stat(2)

Should be supplemented by

S_ISMEM(m) is it a memory file?

and

S_IFMEM 0110000 memory file