[RFC] Remote File I/O should allow opening non regular files

Hi,

Today's implementation of `open()` first checks if the file is a regular
file [1]. Is there any good reason for that limitation? I can't see any
problem in opening special files. Most of them can be used with `read()`
and `write()` only, without `ioctl()`, like any regular file. For
example: TTYs, /dev/random, pipes, etc.

Best regards,

[1]
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=gdb/remote-fileio.c#l409

-- 
Julio Guerra