extending the maximum filename length (pointer to patch)[request for input]

[Tomoaki AOKI]

On Tue, 12 Sep 2017 14:46:12 -0230
"Jonathan Anderson" <jonathan at FreeBSD.org> wrote:

> On 12 Sep 2017, at 14:38, Julian Elischer wrote:
> 
> > “〓是一个〓〓多字符文件名〓度的文件目的是命名一个文件用中文或者日文或者〓文字符并且要求字符〓度超〓八十五个字符然后拷〓〓文件到我〓的共享文件〓看看是否能〓拷〓〓文件到我.txt”
> > (I have no idea what that says but apparently it's a real filename 
> > from a windows machine that blew up when written via samba.)
> 
> Google Translate says, amusingly:
> "This is a test file for the length of the file name. The purpose is to 
> name a file in Chinese or Japanese or Korean characters and require the 
> character to be longer than 85 characters and then copy the file into 
> our shared folder to see if it can copy the file To me" (.txt, I guess)
> 
> No matter what number you choose for a path length, you're never going 
> to win against that specific user. :)

Most people who doesn't know the "internals" would not matter how
long "a character" is. So we'd better assuming the longest-possible
character.

At worst, file name string can contain shift-in / shift-out or
charset change sequences, and become much longer (character sets
specific). But if we decide the "filename standard" as UTF-8, it
wouldn't be needed and 4 (6?) bytes/character would be sufficient.

So if we decide max length on "UTF-8 characters" to be 256, 1536
"bytes" would be sufficient.

*Possibly 5 and 6 bytes character in UTF-8 could be already prohibited.
 If so, 1024 bytes is sufficient.

> 
> 
> Jon
> --
> Jonathan Anderson
> jonathan at FreeBSD.org
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> 


-- 
Tomoaki AOKI    <junchoon at dec.sakura.ne.jp>