cygpath -w for non-existent server
Mon Dec 6 11:59:00 GMT 2010
On 6 December 2010 11:34, Corinna Vinschen wrote:
> Hi Andy,
> On Dec 4 16:07, Corinna Vinschen wrote:
>> On Dec 4 06:35, Andy Koppe wrote:
>> > With non-existent server foo, and Cygwin 1.7.7 or the latest 1.7.8 snapshot:
>> > $ cygpath -w //foo/bar
>> > \\foo\bar
>> > $ cygpath -w //foo
>> > cygpath: error converting "//foo" - No such file or directory
>> > Is that as intended?
>> > Also, both only return after a few seconds delay, so I assume they
>> > trigger network accesses. Is that necessary?
>> Probably yes, due to the way SMB works. The "No such file or directory"
>> seems wrong though. I'll investigate next week.
> Done. The behaviour is perfectly valid.
> - "//foo/bar" requires to access the path, which in turn triggers an SMB
> request on the wire. This takes a couple of seconds within Windows
> itself, even if the DNS request returns immediately that the server
> doesn't exist. NetBIOS? Anyway, there's nothing Cygwin can do about
> - "//foo" is a virtual path, valid only in Cygwin. You can't access
> "\\foo" in the Win32 API using file or directory access functions. It
> just doesn't exist as a path. UNC paths are only valid with at least
> two path components as in "\\server\share". Since "//foo" is a
> virtual path, there's no Win32 equivalent. So, from the Windows
> perspective there's "No such file or directory".
Weird. "\\server" works fine in Explorer and also with cygstart, so I
guess Explorer implements it as some sort of virtual directory. Is
that enough reason to support it as a special case in the Cygwin path
Thanks for looking into this.
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