On Mon, May 11, 2020 at 08:59:42PM +0100, Barry Scott wrote:

> The \0 can never be part of a valid file in Unix, macOS or Windows.

There are a few file systems which accept NULs in file names, such as 
HFS and HFS+ and (I think) Joliet.

HFS+ volumes include a special special directory called the metadata 
directory, in the volume's root directory, called "\0\0\0\0HFS+ Private 
Data".

https://developer.apple.com/library/archive/technotes/tn/tn1150.html#HFSPlusNames

I don't know how complete HFS+ support is on Linux or Windows, but in 
principle any OS that supports HFS+ or (maybe) Joliet could have files 
with NULs.

Remember that NULs may be legal next time you are stress testing your 
file IO code *wink*


-- 
Steven
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