Re: Error writing loose object on Cygwin

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On Thu, 13 Jul 2006, Shawn Pearce wrote:
> 
> I thought about that but Windows 2000 talking to the same samba
> server issues back the correct errno.  Running the exact same Cygwin
> and GIT binaries (we've at least standardized on that).  So it
> seems weird that a samba server is issuing the correct error code
> to a Windows 2000 client but the wrong one to a Windows XP client.

The samba connection protocol is fairly involved, and it will, as far as I 
know, do a variety of "negotiation" of capabilities of both ends. What a 
W2000 client does can very possibly be very different from what a WXP 
client does, which in turn is certainly going to be different from a W98 
client. It will simply talk a different version of the protocol.

I am also told that the error codes actually differ between different 
versions of the samba protocol - not in the sense that different events 
generate different error codes, but that the _same_ error (say "ENOENT") 
is actually represented wioth different numbering in "old Windows SMB" and 
"new windows SMB".

I don't know the details, and may have gotten them wrong, but the point 
it, is't not at all impossible that the exact same version of Samba on the 
server will negotiate a different protocol because the client OS is 
different, and even though the Cygwin libraries and git binaries are the 
exact same libraries/binaries, they might get different error codes from 
the same system call.

(This may also explain why there are two "samba clients" in the kernel: 
the CONFIG_SMB and CONFIG_CIFS. CIFS is the "new version SMB", and the 
CIFS client currently doesn't even understand the old version - so you 
might use SMB for old servers, and CIFS for new servers)

That said, I thought W2000 and WXP both negotiated the "new" protocol, but 
there are probably config details even within that one..

		Linus
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