[mananaysiempre]

> Indeed, Linux allows anything but "/" and "\0" in filenames.

For what it’s worth, NT allows any 16-bit quantity but L'\\' (0x005C) in filenames (even nulls); it’s the Win32 layer on top of it that imposes all the other weird restrictions and mappings.

[Dwedit]

The NT Object Namespace itself indeed has no restrictions on filename characters except for "\", but once you reach a real filesystem like NTFS or FAT, the forbidden characters continue to be blocked.

https://projectzero.google/2016/02/the-definitive-guide-on-w...