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Date: Thu, 7 Jan 2016 13:47:56 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: stat() lstat() not able to read long filename with cyrillic chars?
Message-ID: <20160107124756.GB20447@calimero.vinschen.de>
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References: <20151223194440 DOT 5B2A98CFEA AT edrusb DOT is-a-geek DOT org> <20151224192448 DOT GB4275 AT calimero DOT vinschen DOT de> <773876572 DOT 20151225030451 AT yandex DOT ru> <20151226215732 DOT 3196F8B96F AT edrusb DOT is-a-geek DOT org>
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On Dec 26 22:57, Denis Corbin wrote:
> On 25/12/2015 01:04, Andrey Repin wrote:
> > Greetings, Corinna Vinschen!
> >=20
> >>> First, I have read the FAQ and this mailing archive :)
> >>>=20
> [..]
> >=20
> >> NAME_MAX is 255.  On Windows this is the number of UTF-16 chars=20
> >> unfortunately.  On POSIX systems (as on Cygwin) this is the=20
> >> number of bytes.  Long UTF-16 strings in cyrillic take twice as=20
> >> much UTF-8 chars as it has UTF-16 chars, so NAME_MAX in utf-8=20
> >> cyrillics translates into a maximum of 127 UTF-16 chars.
>=20
> Ok, I understand. Thanks for your explanation.
>=20
> >=20
> > Aren't POSIX restrictions are a bit different? Namely 128 bytes
> > per path element and 4096 bytes for file name?
>=20
> Seen the sample file name it seems truncated rather near 256 bytes (~
> 128 UTF-16 chars) than 4096 bytes...

NAME_MAX/_POSIX_NAME_MAX are 255, PATH_MAX/_POSIX_PATH_MAX are 4096.
NAME_MAX defines the maximum length of a path component, PATH_MAX the
maximum length of an entire path.  In bytes.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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