Date: Sun, 22 Jan 2023 20:21:15 +0100
To: cygwin@cygwin.com
Subject: Re: [bug?] cygwin cannot mount smb shares beginning with underscore; 
 "Invalid argument"
Message-ID: <Y82MqzKDg1L/wjHE@calimero.vinschen.de>
Mail-Followup-To: cygwin@cygwin.com, Jeremy Hetzler <jeremyhetzler@gmail.com>
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From: Corinna Vinschen via Cygwin <cygwin@cygwin.com>
Reply-To: cygwin@cygwin.com
Cc: Corinna Vinschen <corinna-cygwin@cygwin.com>,
        Jeremy Hetzler <jeremyhetzler@gmail.com>
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On Jan 21 11:30, Jeremy Hetzler via Cygwin wrote:
> All,
> 
> First, thank you for many years of Cygwin.
> 
> I'm unable to get Cygwin to mount Windows SMB shares where the share
> name begins with underscore. mount gives an error "Invalid argument".

Yes, that's actually a bug.  The mount code path in Cygwin checks
the path for being a share (i.e. \\server\share\... syntax)

The code, which, incidentally, has only been marginally changed since
its inception pre-2000, is expecting that server name as well as share
name both start with an alphanumeric ASCII char.

That means, right now you can't mount servers and shares starting with
any character other than [0-9a-zA-Z].  D'oh.

I pushed a patch and the Cygwin test release 3.5.0-0.138.g6338d2f24a60
is building while I'm replying.  Should be up in an hour or so.


Thanks,
Corinna

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